WO2020250460A1 - Rotation transmission mechanism and motor - Google Patents

Rotation transmission mechanism and motor Download PDF

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Publication number
WO2020250460A1
WO2020250460A1 PCT/JP2019/047237 JP2019047237W WO2020250460A1 WO 2020250460 A1 WO2020250460 A1 WO 2020250460A1 JP 2019047237 W JP2019047237 W JP 2019047237W WO 2020250460 A1 WO2020250460 A1 WO 2020250460A1
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WO
WIPO (PCT)
Prior art keywords
rotating body
transmission mechanism
rotation transmission
rotating
rotation
Prior art date
Application number
PCT/JP2019/047237
Other languages
French (fr)
Japanese (ja)
Inventor
陽一郎 浜元
Original Assignee
株式会社Ｆｒｅｅｐｏｗｅｒ Ｉｎｎｏｖａｔｉｏｎｓ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ｆｒｅｅｐｏｗｅｒ Ｉｎｎｏｖａｔｉｏｎｓ filed Critical 株式会社Ｆｒｅｅｐｏｗｅｒ Ｉｎｎｏｖａｔｉｏｎｓ
Priority to JP2020514297A priority Critical patent/JP6747743B1/en
Publication of WO2020250460A1 publication Critical patent/WO2020250460A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/10—Rider propulsion of wheeled vehicles involving devices which enable the mechanical storing and releasing of energy occasionally, e.g. arrangement of flywheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M21/00—Transmissions characterised by use of resilient elements therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H33/00—Gearings based on repeated accumulation and delivery of energy
    • F16H33/02—Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines

Definitions

  • the present invention relates to a rotation transmission mechanism and a motor capable of efficiently outputting input energy.
  • Vehicles such as bicycles, unicycles for civil engineering, and rear cars move by rotating the wheels while receiving frictional resistance from the ground contact surface. Therefore, these vehicles require a large driving force (input energy) from the stopped (resting) state to the start of movement (when starting). Further, once these vehicles start to move, the wheels can be rotated with a small driving force, but a large driving force is required even during acceleration and climbing a slope. Since these vehicles are driven by the user by human power, the repulsive force that the user receives from the wheels (vehicle) increases in proportion to the magnitude of the driving force that the user gives to the wheels (vehicle), and the input is input. Part of the energy bounces off the user's knees, ankles, hips, etc.
  • Patent Document 1 filed by the present inventor states that a) an internal rotating member having an outer peripheral convex portion protruding from the outer periphery of the rotating shaft, and b) rotatable to the rotating shaft.
  • the side plate portion to be inserted into the side plate portion, the outer cylinder portion erected on the outer peripheral portion of the side plate portion, and the inner peripheral portion protruding from the side plate portion and / or the outer cylinder portion on the inner peripheral side of the outer cylinder portion and alternately arranged with the outer peripheral convex portion.
  • a rotation transmission mechanism for a human-powered vehicle which includes an external rotating member having a peripheral convex portion, and c) an elastically deformed portion disposed between the outer peripheral convex portion and the inner peripheral convex portion.
  • Patent Document 2 discloses a bicycle that stores energy when pedaling in a spring and uses it for rotation of a wheel.
  • the rotation transmission mechanism for a human-powered vehicle of Patent Document 1 absorbs and accumulates impact energy and excessive input energy generated by a load received from the outside during initial movement or running in the elastically deformed portion, and significantly reduces the load on the human body. At the same time, when the input energy is reduced or interrupted, the stored energy is taken out and used as power (rotational force).
  • the rickshaw equipped with this rotation transmission mechanism for rickshaws makes it possible to easily move on slopes and uneven roads and carry heavy luggage without increasing the burden on the user's body. It was extremely convenient.
  • both the outer peripheral convex portion and the inner peripheral convex portion are formed in a substantially fan shape when viewed from the side surface, and elastically deformed portions are formed between the inclined surfaces linear in the radial direction of the outer peripheral convex portion and the inner peripheral convex portion. It has a structure to compress. Therefore, when the root side of the outer peripheral convex portion is thin and a large driving force is applied, stress may be concentrated on the root and deformation or breakage (breakage) of the outer peripheral convex portion may occur.
  • the elastically deformed portion cannot be sufficiently compressed due to the deformation (deflection) of the outer peripheral convex portion, the energy stored in the elastically deformed portion is reduced, the input energy cannot be effectively used, and the rotational force is increased. There was also a risk that the transmission efficiency would decrease.
  • the internal rotating member is held in one space surrounded by the side plate portion and the outer cylinder portion of the external rotating member, and the outer peripheral convex portion of the internal rotating member and the inner peripheral convex portion of the outer rotating member mesh with each other. Since the internal rotating member and the external rotating member rotate while supporting each other, the movement, misalignment, tilt, etc.
  • the elastically deformed portion is compressed by using the inclined surfaces of the outer peripheral convex portion and the inner peripheral convex portion, and the elastic deformed portion filled between the outer peripheral convex portion and the inner peripheral convex portion is substantially fan-shaped when viewed from the side. Since it is formed in, the corners of the elastically deformed portion are also easily worn, and there is a surface lacking in durability.
  • the compression amount (deformation amount) differs between the radial center side and the radial outer peripheral side of the elastic deformed portion, so that the response is obtained.
  • the property was poor, damage was likely to accumulate in the elastically deformed portion, and the life of the elastically deformed portion was shortened.
  • Patent Document 2 a plurality of arc-shaped openings are formed in the drive plate attached to the crankshaft, and a spring is held inside each opening along the length direction of each opening. ..
  • a plurality of pegs are provided on the other side of the wheel which is rotatably held by the crankshaft and arranged on one side of the drive plate, and each peg is inserted into each opening from one side of the drive plate. It is in contact with the free end of each spring. Therefore, when the drive plate is rotated together with the crankshaft by rowing the pedal connected to the crankshaft, the drive plate and the wheel rotate relatively, and the spring is compressed by the peg inside each opening, and the input energy from the pedal is applied.
  • the wheel rotates while (part) is accumulated in the spring. Then, for example, at the top dead center and the bottom dead center, when the input from the pedal is reduced or interrupted, the energy stored in each spring is applied to each peg by extending the spring inside each opening. It is transmitted to the wheel via the wheel to effectively use the input energy and stabilize the rotation of the wheel.
  • a spring curved along an arc-shaped opening it is difficult for a spring curved along an arc-shaped opening to expand and contract smoothly along the length direction (circumferential direction) of the opening, and when the spring is compressed (when input energy is stored). ) And during expansion (when using stored energy), energy is likely to be wasted, inefficient, and lacks operational stability.
  • Patent Document 2 in order to hold the spring inside the opening, a rod is attached to the central portion in the width direction of the opening along the length direction of the opening, and the spring is extrapolated to the rod. It is stated that.
  • the peg and the rod interfere with each other and the peg cannot be inserted into the opening. Therefore, the peg cannot compress the spring and stores energy in the spring. Is impossible, and the invention cannot be implemented (realized). Further, one side of the opening is partially covered by the wheel, but the other side is open and the spring is exposed.
  • the rotation transmission mechanism according to the first invention is a first rotating body that rotates together with a rotating shaft, and is arranged on one side in the axial direction of the first rotating body and can rotate about the rotating shaft.
  • the first rotating body has a main body portion formed integrally with the rotating shaft or held on the outer periphery of the rotating shaft, and the main body portion rotates around the axis of the rotating shaft.
  • One or a plurality of arc-shaped space portions that are concentrically curved on the outer circumference of the shaft and penetrate the main body portion in the thickness direction are formed, and an elastic deformation member is housed in a part of each space portion.
  • the second rotating body has a side plate portion rotatably held by the rotating shaft or the first rotating body, and one or a plurality of pressing portions projecting to the other side in the axial direction of the side plate portion.
  • Each of the pressing portions is inserted into each of the space portions from one side in the axial direction of the first rotating body, and while the first rotating body and the second rotating body rotate relative to each other, the pressing portion is described.
  • the elastically deforming member is compressed between the peripheral wall of each space portion and each of the pressing portions.
  • each of the pressing portions is arranged with the elastically deforming member and the approach section separated from each other in an initial state, and the first rotating body and the second rotating body are relative to each other. It is preferable to approach the elastically deforming member while rotating to.
  • each of the pressing portions has a recessed portion that expands toward each of the elastically deformed members, and in the initial state, each of the elastically deformed portions is formed at the peripheral edge on the opening side of the recessed portion. It may come into contact with the member.
  • the first rotating body is formed integrally with the main body or attached to the main body, and the space portions on the other side in the axial direction of the main body. Can have a closure that occludes.
  • the second rotating body is an outer plate rotatably held by the rotating shaft or the first rotating body on the other side in the axial direction of the first rotating body.
  • the outer plate may be connected to the side plate portion by the pressing portion penetrating the space portion.
  • the second rotating body is provided on the front side of each pressing portion, and is a part of the space portion or a part of the space portion on the other side in the axial direction of the first rotating body. It is also possible to have a cover portion that covers the whole.
  • the first and second rotating bodies engage with each other and rotate relative to each other while guiding the relative rotation of the first rotating body and the second rotating body. It is preferable to have at least one pair of guiding means for regulating the amount.
  • the elastically deforming member may be accommodated on one side and the other side in the circumferential direction of each of the space portions.
  • the rotation transmission mechanism according to the second invention is a first rotating body that rotates together with a rotating shaft, and is arranged on one side of the first rotating body in the axial direction and can rotate about the rotating shaft.
  • the first rotating body includes a side plate portion formed integrally with the rotating shaft or held on the outer periphery of the rotating shaft, and one or a plurality of pressing portions protruding in one axial direction of the side plate portion.
  • the second rotating body has a main body portion rotatably held by the rotating shaft or the first rotating body, and the main body portion has a main body portion of the rotating shaft centered on the axis of the rotating shaft.
  • One or a plurality of arc-shaped space portions are formed, which are concentrically curved on the outer periphery and penetrate the main body portion in the thickness direction to insert the respective pressing portions from the other side in the axial direction of the main body portion.
  • An elastically deformable member is housed in a part of each of the spaces. While the first rotating body and the second rotating body rotate relatively, the elastically deforming member is compressed between each pressing portion and the peripheral wall of each space portion.
  • each of the pressing portions is arranged with the elastically deforming member and the approach section separated from each other in the initial state, and the first rotating body and the second rotating body are relative to each other. It is preferable to approach the elastically deforming member while rotating to.
  • each of the pressing portions has a recessed portion that expands toward each of the elastically deformed members, and in the initial state, each of the elastically deformed portions is formed at the peripheral edge on the opening side of the recessed portion. It may come into contact with the member.
  • the second rotating body is formed integrally with the main body portion or attached to the main body portion, and the space portions on one side in the axial direction of the main body portion.
  • Can have a closure that occludes.
  • the first rotating body is formed integrally with the rotating shaft on one side in the axial direction of the second rotating body or is held on the outer periphery of the rotating shaft. It has an outer plate, and the outer plate may be connected to the side plate portion by each of the pressing portions penetrating the respective space portions.
  • the first rotating body is provided on the front side of each pressing portion, and a part or a part of each space portion on one side in the axial direction of the second rotating body. It is also possible to have a cover portion that covers the whole.
  • the first and second rotating bodies engage with each other and rotate relative to each other while guiding the relative rotation of the first rotating body and the second rotating body. It is preferable to have at least one pair of guiding means for regulating the amount.
  • the elastically deforming member may be accommodated on one side and the other side in the circumferential direction of each of the space portions.
  • the motor according to the third invention according to the above object has a rotor provided with the rotation transmission mechanism according to the first or second invention, and the elastically deforming member is used to rotate the second rotating body forward and reverse. It is transmitted to the first rotating body via the rotating body and is output from the rotating shaft.
  • the rotation of the first rotating body is transmitted to the second rotating body, or the rotation of the second rotating body is transmitted to the first rotating body.
  • the elastically deforming member By compressing the elastically deforming member in between and accumulating a part of the input energy, the load at the time of initial movement can be reduced, the drive can be started with a small force while absorbing the impact, and the input energy becomes small.
  • the stored compression (elastic) energy can be converted into rotational energy and effectively used by restoring the elastically deforming member, the fluctuation of the output energy can be suppressed, and the rotation can be stabilized.
  • each space portion since a set of pressing portions and elastically deforming members are independently housed in each space portion, the first rotating body and the second rotating body support each other via the respective pressing portions. , Positional deviation and inclination are unlikely to occur, each elastically deformed member can be reliably compressed, operation stability is excellent, and wear of the pressing portion can be reduced.
  • the motor according to the third invention has a rotor provided with the rotation transmission mechanism according to the first or second invention, and the forward rotation and the reverse rotation of the second rotating body are performed by the first elastically deforming member.
  • (A) is a plan view of a main part of a bicycle provided with a rotation transmission mechanism according to a first embodiment of the present invention, and (B) is a cross-sectional view taken along the line AA of (A).
  • (A) is a side view showing a first rotating body of the rotation transmission mechanism, and (B) is a cross-sectional view taken along the line BB of (A).
  • (A) is a side view showing a second rotating body of the same rotation transmission mechanism, and (B) is a cross-sectional view taken along the line CC of (A). It is a cross-sectional view of the main part of the rotation transmission mechanism.
  • FIG. 1 A and (B) are regular cross-sectional views of a main part showing first and second modified examples of the same rotation transmission mechanism, respectively.
  • (A) is a side view showing a third modification of the rotation transmission mechanism, and (B) is a cross-sectional view taken along the line DD of (A).
  • (A) is a side view showing a fourth modification of the rotation transmission mechanism, and (B) is a cross-sectional view taken along the line EE of (A).
  • FIG.) and (B) are a cross-sectional view of a main part and a normal cross-sectional view of a main part showing a motor using the rotation transmission mechanism according to the second embodiment of the present invention, respectively.
  • FIG. 9 is a side view taken along the line FF of FIG.
  • FIG. 10 is an end view taken along the line GG of FIG. It is a side view of the main part which shows the 1st operation of the rotation transmission mechanism. It is a side view of the main part which shows the 2nd operation of the rotation transmission mechanism.
  • the rotation transmission mechanism 10 according to the first embodiment of the present invention shown in FIGS. 1 to 4 is attached to, for example, the rotation shaft 12 of an existing bicycle (an example of a human-powered vehicle) and is running (rotation of the rotation shaft 12).
  • the rotation shaft 12 By accumulating a part of the input energy at (time), and when the input energy decreases or is interrupted, the accumulated energy is efficiently taken out as rotational energy and effectively used, so that the initial movement, sudden start, and sudden This is intended to improve running (rotational transmission) stability while reducing the load on the human body during acceleration, climbing a slope, running at low speed, and the like.
  • the rotating shaft 12 is rotatably held by a rotating shaft holding portion 13 provided on a bicycle frame (not shown), and 180 is held at both ends of the rotating shaft 12.
  • the left and right crank arms 14 and 15 are attached with a phase difference of degrees.
  • a pedal (not shown) is rotatably provided on the front side of each of the crank arms 14 and 15, and the user (driver) of the bicycle 11 pedals the pedal to rotate the shaft together with the crank arms 14 and 15.
  • the structure is such that 12 rotates.
  • the rotation transmission mechanism 10 has a first rotating body 16 that rotates together with the rotating shaft 12 and one side of the first rotating body 16 in the axial direction (left side in FIG. 4). It is provided with a second rotating body 17 which is arranged in and can rotate around a rotating shaft 12. As shown in FIGS. 1 (B), 2 (A), (B), and 4, the first rotating body 16 has a substantially disk-shaped main body 18 held on the outer circumference of the rotating shaft 12. ..
  • the main body 18 is a plurality of (here, four) arc-shaped spaces that are concentrically curved around the outer circumference of the rotary shaft 12 around the axis of the rotary shaft 12 and penetrate the main body 18 in the thickness direction. Part 19 is formed.
  • the elastic deformation member 20 is housed in a part of each space portion 19 (here, one side in the circumferential direction of each space portion 19).
  • an elastomer is preferable, and a thermoplastic elastomer is preferably used, but synthetic rubber such as butadiene rubber, urethane rubber, and silicone rubber can also be used.
  • the shape of the elastically deformable member is preferably spherical or columnar, but is not limited thereto. Further, in order to increase the elasticity of the elastically deformable member, it may be formed in a cylindrical shape or the like having a hollow portion.
  • the second rotating body 17 is a bearing (a type of bearing) 21 (a type of bearing) 21 (FIG. 4) inserted into the rotating shaft 12. It has a side plate portion 22 rotatably held by the rotating shaft 12 via the above, and a plurality of (four here) pressing portions 23 projecting to the other side (here, the right side) in the axial direction of the side plate portion 22. ..
  • Each of the pressing portions 23 is inserted into each space portion 19 from one side (here, the left side) in the axial direction of the first rotating body 16, but in the initial state, each elasticity is as shown in FIG. 1 (B).
  • the deformable member 20 and the approach section 24 are separated from each other.
  • the pressing portion is preferably formed integrally with the side plate portion, but a separately manufactured portion may be attached by screwing, welding, or the like.
  • the bicycle chain ring 25 is attached to one side (here, the left side) of the side plate portion 22, but when the rotation transmission mechanism is manufactured exclusively for the bicycle, the chain ring is formed integrally with the side plate portion. You can also do it.
  • the rotating shaft and the first rotating body (main body portion) can be integrally formed.
  • the side plate portion may be rotatably held by the rotating shaft, and a bearing does not necessarily have to be used.
  • each elastic deforming member 20 housed in each space portion 19 and each pressing portion 23 in a stationary state approach each other, and each space portion
  • Each elastically deforming member 20 is compressed between the peripheral wall of 19 and each pressing portion 23.
  • each elastically deforming member 20 is elastically deformed, but after being deformed by a predetermined amount, the rotational force (input energy) of the rotating shaft 12 (first rotating body 16) is applied to each pressing portion via each elastically deforming member 20.
  • each elastically deforming member 20 is compressed and a part of the input energy is stored to generate an impact at the time of initial movement.
  • the drive can be started with a small force while absorbing. Then, when the input energy becomes small or interrupted (for example, when passing through the top dead center or the bottom dead center during the rotation of the crank arms 14 and 15 or when climbing a slope), the elastic deformation member 20 is restored by restoration.
  • the accumulated compression (elastic) energy can be converted into rotational energy and effectively used to stabilize the rotation (running).
  • each space portion 19 is formed in an arc shape concentrically curved around the outer circumference of the rotating shaft 12 with the axis of the rotating shaft 12 as the center. Therefore, each pressing portion 23 can smoothly move inside each space portion 19. Then, each pressing portion 23 can compress the outer peripheral surface of each elastically deforming member 20 substantially evenly, stabilize the operation of each portion, and efficiently transmit the rotation.
  • a semicircular protrusion 26 is formed at a contact position of each pressing portion 23 with each elastically deforming member 20 when viewed from the side. ..
  • the protrusion 26 on the pressing portion 23 By providing the protrusion 26 on the pressing portion 23, the pressure is concentrated when the elastically deforming member 20 is compressed, the elastically deforming member 20 is easily deformed, and energy can be efficiently stored.
  • the protrusions are preferably formed in a semi-cylindrical or hemispherical shape, but the shape thereof is not limited to these, and can be appropriately selected. Further, the number of protrusions can be appropriately selected, and the surface of the pressing portion may have irregularities formed by the plurality of protrusions.
  • each space portion 19 is larger than the total volume of each elastically deforming member 20 and each pressing portion 23 occupying each space portion 19, and the elastically deforming member 20 and each elastically deforming member 20.
  • the outer diameter of the pressing portion 23 is formed to be smaller than the width (radial dimension) of the space portion 19, so that the first rotating body 16 and the second rotating body 16 and the second rotating body 16 are formed. While the rotating body 17 rotates relatively, it is possible to prevent the peripheral wall of the space portion 19 from coming into contact with the outer peripheral surface of the pressing portion 23.
  • a tubular portion 27 is provided on the outer periphery of the side plate portion 22.
  • the tubular portion 27 can cover and protect the outer periphery of the first rotating body 16 (main body portion 18).
  • the inner diameter of the tubular portion 27 is formed to be slightly larger than the outer diameter of the main body portion 18, so that the main body portion 18 rotates smoothly without contacting the tubular portion 27 during driving. It is possible to prevent energy loss and noise generation.
  • the tubular portion 27 may be omitted.
  • the first and second rotating bodies 16 and 17 are engaged with each other, and the first rotating body 16 and the second rotating body 16 and the second rotating body are engaged with each other. It is provided with four pairs of guiding means 28 that regulate the relative rotation amount while guiding the relative rotation of 17.
  • the main body 18 of the first rotating body 16 is curved in an arc shape about the axis of the rotating shaft 12.
  • Four guide holes 28a penetrating the main body 18 in the thickness direction are formed, and as shown in FIGS. 1 (B), 3 (A), (B) and 4, the second rotating body 17 is also formed.
  • each guide protrusion 28b was inserted into each guide hole 28a from one side in the axial direction of the main body portion 18.
  • the guide means 28 in which the guide hole 28a and the guide protrusion 28b are paired can smoothly rotate the first rotating body 16 and the second rotating body 17 relative to each other, and the first rotating body 16 and the first rotating body 16 and the second rotating body 17 can be smoothly rotated. It is possible to regulate the relative rotation amount of the rotating body 17 of 2 to prevent the elastically deforming member 20 from being excessively deformed (compressed) and to improve the durability of the elastically deforming member 20.
  • the guiding means only needs to be able to regulate the relative rotation amount while guiding the relative rotation of the first rotating body and the second rotating body, and the configuration and arrangement thereof can be appropriately selected.
  • a guide groove that opens on one side in the axial direction of the main body may be formed, or a guide protrusion is formed on the main body side to form a side plate portion.
  • a guide hole or a guide groove may be formed on the side.
  • a guide hole or a guide groove may be formed on the outer periphery of the main body portion to form a guide protrusion on the inner peripheral side of the tubular portion, or a guide protrusion may be formed on the outer circumference of the main body portion to form the tubular portion.
  • a guide hole or a guide groove may be formed on the inner peripheral side of the.
  • the number of guide means may be at least one pair, but from the viewpoint of operational stability, two or more pairs are preferable, and it is more preferable that the guide means are arranged at equal angular intervals.
  • the cross section for cutting each space portion 19 in the direction orthogonal to the axial direction of the rotating shaft 12 is one side in the axial direction of the main body portion 18 (as shown in FIGS. 2B and 4).
  • it is formed so as to shrink from the left side) to the other side in the axial direction (here, the right side). That is, the peripheral wall is inclined so that each space portion 19 narrows from one side in the axial direction of the main body portion 18 toward the other side in the axial direction.
  • each elastic deforming member 20 housed in each space portion 19 does not fall (fall off) from the other side in the axial direction of the main body portion 18.
  • the structure of the main body 18 can be simplified and the weight of the first rotating body 16 can be reduced.
  • the second rotating body 17a can rotate to the rotating shaft 12 on the other side in the axial direction of the first rotating body 16a. It is also possible to have a structure in which the outer plate 29a is held, and the outer plate 29a is connected to the side plate portion 22 by each pressing portion 23a penetrating each space portion 19. As a result, the main body portion 18a can be held between the side plate portion 22 and the outer plate 29a, foreign matter (dust), rainwater, etc. can be prevented from entering the space portion 19, and deterioration of the elastically deformed member 20 can be prevented. .. Then, it is possible to prevent the elastically deforming member 20 from falling off from the space portion 19.
  • the closing portion 29b that closes each space portion 19 to the first rotating body 16b on the other side in the axial direction of the main body portion 18b. May be provided.
  • the closing portion 29b it is possible to prevent the elastically deforming member 20 from falling, prevent foreign matter (dust), rainwater, etc. from entering the space portion 19, and prevent deterioration of the elastically deforming member 20.
  • the plate-shaped closing portion 29b formed of a separate member is attached by screwing to the main body portion 18b, but depending on the material, it may be attached by welding or adhesive, or the main body portion and the closing portion are integrally formed. You may.
  • the rotation transmission mechanism 10 and the rotation transmission mechanism 10a have a structure in which the side plate portion 22 is rotatably held by the rotation shaft 12, but the second rotation transmission mechanism 10b is shown in FIG. 5 (B).
  • the side plate portion 22 of the rotating body 17b may be rotatably held by the first rotating body 16b.
  • an outer plate similar to the rotation transmission mechanism 10a can be provided, but in that case, the outer plate is rotatably held by the first rotating body like the side plate portion 22. It is preferable to have a structure.
  • the peripheral wall of each space portion may be formed straight from one side in the axial direction of the main body portion to the other side in the axial direction.
  • each pressing portion 23b of the second rotating body 17c A cover portion 29c that covers a part of each space portion 19 may be provided on the other side of the rotating body 16c in the axial direction.
  • the pressing portion 23b can be protected by the cover portion 29c, and the main body portion 18c can be held so as to be sandwiched between the side plate portion 22 and the cover portion 29c to prevent the second rotating body 17c from falling off from the rotating shaft 12.
  • the cover portion 29c can be fixed to the pressing portion 23b by screwing, welding, adhesion, or the like after the pressing portion 23b is inserted into the space portion 19.
  • the cover portion 29c is formed in a circular shape, but the shape of the cover portion is not limited to this, and can be appropriately selected and may cover the entire space portion.
  • the elastically deformable member can be protected to prevent the elastically deformed member from falling off from the space, and the compressed elastically deformable member can be prevented from bulging to the outside of the space to prevent the elastically deformed member from bulging to the outside of the space.
  • the elastically deformable member can be reliably compressed inside the space.
  • each pressing portion 23c of the second rotating body 17d expands toward each elastic deforming member 20. It may have the recessed portion 26a and come into contact with each elastically deforming member 20 at the peripheral edge of the recessed portion 26a on the opening side in the initial state. As a result, each space 19 of the main body 18d is substantially filled with the elastically deforming member 20 and the pressing portion 23c, and rattling between the first rotating body 16d and the second rotating body 17d is prevented. , It becomes possible to perform a smooth rotation operation.
  • each elastic deforming member 20 enters each recess 26a, so that the load at the time of initial movement can be reduced. Then, between the time when the first rotating body 16d and the second rotating body 17d start relative rotation until each elastically deforming member 20 comes into contact with the bottom of each recessed portion 26a and begins to be compressed by each pressing portion 23c.
  • Each elastically deforming member 20 can be compressed with momentum, and the energy stored in each elastically deforming member 20 can be increased.
  • the shape and size of the recessed portion can be appropriately selected, but since the recessed portion expands toward the elastically deforming member (opening side), the peripheral edge of the recessed portion on the opening side becomes an inclined surface.
  • the elastically deformable member can be smoothly guided in and out of the recessed portion, and the durability of the elastically deformable member can be improved.
  • the rotation transmission mechanism 10a, 10b, 10c, and 10d can be provided with the guiding means.
  • the structure is such that the first rotating body has a main body portion (including a space portion and an elastic deforming member) and the second rotating body has a side plate portion (including a pressing portion).
  • the structure may be such that the first rotating body has a side plate portion and the second rotating body has a main body portion.
  • a bicycle driver equipped with the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) configured as described above puts a burden on the knees, ankles, etc. at the time of sudden start, sudden acceleration, climbing, etc. Can be significantly reduced, and it is possible to drive easily even on slopes and roads with large resistance. Also. Since wobbling is unlikely to occur even during low-speed driving and stable driving can be performed even when heavy luggage or children are carried, even elderly people or women can use the bicycle safely and comfortably. Further, the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) can be applied to bicycles for competition, rehabilitation, etc. by utilizing good acceleration and uniformity of rotation torque.
  • the elastic modulus of the elastically deforming member 20 can be appropriately selected according to the application of the rotation transmission mechanism 10 (10a, 10b, 10c, 10d).
  • the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) is applied (mounted) to a bicycle, the purpose of the bicycle (general use, competition use, rehabilitation use, children's use, etc.) or the age or physical strength of the user It is preferable to select according to the above.
  • the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) is used for vehicles other than bicycles, such as unicycles for civil engineering and rear cars, as well as rotation axes of various rotation drive units such as mowers and drills. Is also applicable.
  • the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) can be incorporated into the rotor of the motor or the generator.
  • a coil or a permanent magnet may be attached to the outer periphery of the second rotating body 17 (17a, 17b, 17c, 17d), and a permanent magnet or a coil to be a stator may be arranged on the outer periphery thereof with a gap.
  • the entire rotor rotates as one, but by incorporating the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) into the rotor, in the case of a motor, the second rotation at the time of starting.
  • the elastically deforming member After only the body rotates, the elastically deforming member is compressed, and the first and second rotating bodies rotate together and output from the rotating shaft.
  • the first rotating shaft and the first rotating shaft are used at the time of starting. After only the rotating body rotates, the elastically deforming member is compressed and the first and second rotating bodies rotate together. Therefore, in either case, the load at the time of starting can be reduced.
  • the motor when the rotation of the second rotating body fluctuates due to the fluctuation of the drive current or the like, the fluctuation is absorbed (adjusted) by the elastic deformation member to stabilize the rotation of the rotating shaft (suppress the fluctuation or suppress the fluctuation). (Reduced), the load connected to the rotating shaft can be rotated stably.
  • the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) can be used as it is, but in the motor that switches between forward rotation and reverse rotation, each space portion It is necessary to use a rotation transmission mechanism in which elastically deforming members are housed on one side and the other side in the circumferential direction.
  • the motor 31 using the rotation transmission mechanism 30 according to the second embodiment of the present invention will be described with reference to FIGS. 8A and 8B.
  • the same reference numerals as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • the first rotating body 32 that rotates together with the rotating shaft 12 is held on the outer periphery of the rotating shaft 12, and the side plate portion 33 and the side plate portion. It has a plurality of (here, two) pressing portions 34 projecting on one side (here, the left side) in the axial direction of 33.
  • the second rotating body 35 arranged on one side in the axial direction of the first rotating body 32 has a main body portion 36 rotatably held by the rotating shaft 12 via a bearing 21.
  • the main body 36 is concentrically curved around the outer circumference of the rotating shaft 12 around the axial center of the rotating shaft 12, penetrates the main body 36 in the thickness direction, and is on the other side in the axial direction of the main body 36 (here). From the right side), a plurality of (here, two) arc-shaped space portions 37 into which the pressing portions 34 are inserted are formed.
  • the elastically deforming members 20a and 20b are housed on one side and the other side in the circumferential direction of each space portion 37, respectively. In the initial state, as shown in FIG.
  • the elastically deforming members 20a and 20b are preferably formed in a columnar shape according to the thickness of the main body 36, but the shape thereof is not limited to this.
  • each space portion 37 is formed straight from one side in the axial direction of the main body portion 36 toward the other side in the axial direction, but each space portion is cut in a direction orthogonal to the axial direction of the rotation axis.
  • the cross section may be formed so as to expand from one side in the axial direction (here, the left side) of the main body to the other side in the axial direction (here, the right side). That is, by inclining the peripheral wall so that each space portion expands from one side in the axial direction of the main body portion toward the other side in the axial direction, the pressing portion can be easily inserted into the space portion.
  • the first rotating body 32 has an outer plate 38 held on the outer circumference of the rotating shaft 12 on one side in the axial direction of the second rotating body 35.
  • the outer plate 38 may be connected to the side plate portion 33 by each pressing portion 34 penetrating each space portion 37.
  • the side plate portion or the outer plate portion can also be formed integrally with the rotating shaft.
  • a closed portion that closes each space portion on one side in the axial direction of the main body portion of the second rotating body may be formed integrally with the main body portion, or may be attached to the main body portion.
  • the first rotating body may be provided with a cover portion provided on the front side of each pressing portion and covering each space portion on one side in the axial direction of the second rotating body.
  • the rotor 39 provided with the rotation transmission mechanism 30 configured as described above is housed inside the casing 40 of the motor 31, and one side of the rotation shaft 12 projects outside the casing 40.
  • the rotating shaft 12 is rotatably held by bearings 42 attached to the side walls 41 on both sides of the casing 40.
  • the rotor 39 has three coil portions 43 provided on the outer periphery of the second rotating body 35 (main body portion 36) of the rotation transmission mechanism 30.
  • Two permanent magnets 45, which serve as stators, are attached to the inside of the outer peripheral wall 44 of the casing 40 with a gap from the coil portion 43.
  • the commutator 46 electrically connected to each coil portion 43 is divided into three parts in the circumferential direction and insulated from each other, and is fixed to a cylindrical support member 47 provided on one side in the axial direction of the main body portion 36. , It is rotatable together with the second rotating body 35 and each coil portion 43. Further, two brushes 48 are provided so as to face each other so that the front side abuts on the outer peripheral surface of the commutator 46, and a lead wire 49 for energization is connected to the base side of each brush 48.
  • each elastically deforming member 20a (or 20b) housed in each space 37 and each stationary pressing portion 34 approach each other, and the space 37
  • Each elastic deformation member 20a (or 20b) is compressed between the peripheral wall and each pressing portion 34.
  • each elastically deforming member 20a (or 20b) is elastically deformed, but after being deformed by a predetermined amount, the rotational force (input energy) of the second rotating body 35 passes through each elastically deforming member 20a (or 20b). It is transmitted to each pressing portion 34 (first rotating body 32), and the first rotating body 32 and the second rotating body 35 rotate substantially integrally. As a result, the rotational energy input from the second rotating body 35 can be transmitted to the first rotating body 32 and output from the rotating shaft 12.
  • the space portion 37 is formed in a substantially semi-arc shape, and from the start of rotation of the second rotating body 35 until the elastic deformation member 20a (or 20b) comes into contact with the pressing portion 34.
  • the approach section 37a (37b) is long, and only the second rotating body 35 (including the coil portion 43) is used until the first rotating body 32 and the second rotating body 35 start to rotate integrally as the rotor 39. Since the body rotates, the load at the time of starting can be made extremely small (almost no load state). Further, when the rotation of the second rotating body 35 fluctuates due to the fluctuation of the current for driving the motor 31, the elastic deformation member 20a (or 20b) can absorb (adjust) the fluctuation.
  • the elastic deforming member 20a (or 20b) expands and elastically deforms.
  • the energy stored in the member 20a (or 20b) to the first rotating body 32, the input energy is effectively used to prevent the rotation of the rotating shaft 12 from being slowed down, and the rotating shaft 12 is stabilized.
  • a protrusion similar to the pressing portion 23 may be formed at a contact position of each pressing portion with each elastically deforming member, or a recessed portion similar to the pressing portion 23c may be formed.
  • the main body 36 of the second rotating body 35 is rotatably held by the rotating shaft 12 via the bearing 21, but the structure of the second rotating body is appropriately selected.
  • a main body holding portion that is connected to one side and the other side in the axial direction of the main body portion and is rotatably held on the rotating shaft may be provided, or a bearing may not necessarily be used.
  • the second rotating body may be rotatably held by the first rotating body instead of the rotating shaft.
  • a structure in which a tubular mounting portion fixed to a rotating shaft is formed on a side plate portion constituting the first rotating body, and the second rotating body (main body portion) is rotatably held by the mounting portion. It can also be.
  • a guide means can be provided.
  • the structure of the motor using the rotation transmission mechanism 30 is not limited to this embodiment, and the rotation transmission mechanism 30 can be incorporated into the rotors of various motors.
  • a coil portion is provided on the outer periphery of the second rotating body to form a rotor, and permanent magnets serving as stators are arranged on the outer periphery thereof at intervals, but a plurality of permanent magnets are arranged on the outer periphery of the second rotating body.
  • a permanent magnet may be attached to form a rotor, and coils to be a stator may be arranged at intervals on the outer circumference thereof.
  • the rotation transmission mechanism 30 can also be incorporated in the rotor of the generator.
  • FIG. 9 shows a state in which the rotation transmission mechanism 50 is incorporated in the rotation shaft 12 of the wheelchair.
  • the rotating shaft 12 is rotatably held by the frame 51 of the wheelchair, and a hand rim 52 for rotating the rotating shaft 12 in the forward and reverse directions is connected to the front side of the rotating shaft 12.
  • the wheels 54 are fixed to the second rotating body 17e via spokes 53 radially attached to the outer periphery of the tubular portion 27.
  • a plurality of semicircular (here, 6) convex portions 57 are provided on the outer periphery of the main body 56 of the first rotating body 55 when viewed from the side.
  • Elastically deforming members 20a and 20b are housed on one side and the other side of each space portion 19 formed in the main body portion 56 in the circumferential direction, and each space portion is accommodated from one side in the axial direction of the first rotating body 55.
  • each pressing portion 58 of the second rotating body 17e is formed in a columnar shape and does not have a protrusion, but it is also possible to provide a protrusion. Then, the convex portion 57 is pressed between the outer circumference of the first rotating body 55 (main body portion 56) and the tubular portion 27 of the second rotating body 17e to press the convex portion 57 to form the first rotating body 55 (main body portion 56).
  • a brake mechanism 59 that applies a brake to the rotation of) is attached.
  • the brake mechanism 59 has a pair of movable pieces 60 formed by being curved in a substantially semicircular shape along the outer circumference of the main body 56.
  • each movable piece 60 is rotatably held by two support shafts 61 (FIG. 9) fixed to the frame 51. Further, as shown in FIGS. 10, 12, and 13, the front sides of the movable pieces 60 are connected to each other by a compression coil spring (a type of urging means) 63. As a result, each movable piece 60 is always urged toward the axial center side of the rotating shaft 12 by the compression coil spring 63, and the inner peripheral surface side of each movable piece 60 abuts on the outer peripheral surface (convex portion 57) of the main body 56. The rotation of the main body 56 can be braked.
  • a compression coil spring a type of urging means
  • a plurality of (here, two) recesses 62 are formed on the inner peripheral surface of each movable piece 60 in accordance with the circumferential pitch of the convex portions 57.
  • the concave portion 62 is curved in a gentle arc shape (with a radius of curvature larger than the radius of curvature of the convex portion 57).
  • Synthetic rubber is preferably used as the material of the movable piece 60, but the outer peripheral portion of the support shaft 61 is preferably made of metal in consideration of durability.
  • a metal base material having synthetic rubber attached to the inner peripheral surface side may be used as the movable piece.
  • each elastically deforming member 20a housed in each space portion 19 and each pressing portion 58 in a stationary state approach each other, and the peripheral wall of each space portion 19 and each pressing portion 58 come into contact with each other.
  • Each elastic deformation member 20a is compressed between them.
  • each elastically deforming member 20a is elastically deformed, but after being deformed by a predetermined amount, the rotational force (input energy) of the rotating shaft 12 (first rotating body 55) given from the hand rim 52 causes each elastically deforming member 20a to be elastically deformed.
  • the first rotating body 55 and the second rotating body 17e rotate substantially as one, which is transmitted to each pressing portion 58 via the pressing portion 58.
  • the wheels 54 attached to the second rotating body 17e also rotate together, so that the wheelchair starts running.
  • the rotational force (input energy) of the second rotating body 17e is applied to the main body 56 (first rotating body) via the elastically deforming members 20b. It is transmitted to 55), and the second rotating body 17e and the first rotating body 55 start to rotate substantially integrally.
  • the convex portion 57 of the main body portion 56 smoothly moves from the inside of the concave portion 62 of each movable piece 60, and each movable piece 60 is moved to the rotating shaft 12 in the same manner as in FIG. It can be rotated outward in the radial direction.
  • the brake mechanism 59 constantly applies the brake (load) to the first rotating body 55, so that the wheelchair does not move unexpectedly or go down a slope for safety. Excellent.
  • the load at the time of initial movement can be reduced, and it is possible to move easily even on a slope or a road with a large resistance.
  • the brake mechanism only needs to be able to apply a brake (load) to the rotation of the first rotating body 55, and its structure is not limited to this embodiment and can be appropriately selected.
  • the shapes, numbers, arrangements, etc. of the convex portions and the concave portions are not limited to this embodiment, and can be appropriately selected depending on the shape, arrangement, etc. of the movable pieces.
  • This rotation transmission mechanism (excluding the brake mechanism) 50 can be suitably applied to various rotation shafts that perform forward and reverse rotation.
  • the first rotating body 55 is held by the rotating shaft 12 via the rotating shaft mounting portion 64 and rotates together with the rotating shaft 12, but the first rotating body is formed together with the rotating shaft. Anything that rotates may be used, and a means for holding (fixing) the first rotating body on the rotation axis can be appropriately selected.
  • the first rotating body can be formed integrally with the rotating shaft.
  • a guide means can be provided as in the rotation transmission mechanism 10.
  • a protrusion similar to the pressing portion 23 may be formed at a contact position of each pressing portion with each elastically deforming member, or a recessed portion similar to the pressing portion 23c may be formed.
  • each pressing portion can be brought into contact with one or both of the elastically deforming members on one side and the other side in the circumferential direction of each space portion in the initial state, and the approaching portion can be run.
  • the section may be omitted.
  • either the outer plate 29a similar to the rotation transmission mechanism 10a, the closing portion 29b similar to the rotation transmission mechanism 10b, or the cover portion 29c similar to the rotation transmission mechanism 10c can be provided.
  • the present invention is not limited to the above-described embodiment, and other examples and modifications which can be considered within the scope of the matters described in the claims are also included. All changes to the conditions that are included and do not deviate from the gist are within the scope of the present invention.
  • the present invention is also applied when the rotation transmission mechanism is configured by combining the elements of the rotation transmission mechanism according to each embodiment.
  • a metal such as stainless steel is preferably used as the material of the parts for which the material is not specified, but it depends on the application of the rotation transmission mechanism and the magnitude of the driving force (torque). Therefore, various materials can be appropriately selected, and synthetic resin (including reinforced plastic) or wood can also be used.
  • the surface shape of the contact surface of the pressing portion with the elastically deforming member is preferably curved in a convex arc shape, but the present invention is not limited to this and is appropriately selected. It may be flat or may have an inclined surface.
  • the number of space portions and pressing portions can be appropriately selected and may be one.
  • the length of the approach section formed between the pressing portion and the elastically deforming member can be appropriately selected.
  • the approaching section may not be provided so that the pressing portion and the elastically deforming member come into contact with each other in the initial state.
  • the length of the approach section is adjusted by inserting an insertion member formed of a rigid body such as metal or synthetic resin into the approach section (gap) existing between the pressing portion and the elastically deforming member (approach). (Including the case where the section disappears) is also possible.
  • the pressing portion compresses the elastically deforming member via the inserting member, but since the inserting member is a rigid body, it corresponds to substantially increasing the volume of the pressing portion occupying the space portion, and the approach section is Other than shortening, there is no effect on the compression of the elastically deformed member. Further, when the approach section is filled with the insertion member, the rattling between the first rotating body and the second rotating body can be reduced, and both can be rotated smoothly. When there is a run-up section between the pressing portion and the elastically deforming member in the initial state, the pressing portion and the elastically deforming member separated by the approaching section approach each other from the initial position and the elastically deforming member is compressed.
  • the first rotating body and the second rotating body rotate relative to each other until the first rotating body and the second rotating body start to rotate integrally, and the initial relative rotation angle is 10 to. It is preferably 160 degrees, preferably 30 to 160 degrees, and more preferably 60 to 160 degrees.
  • this initial relative rotation angle is not limited to the above range, and is appropriately determined according to the application of the rotation transmission mechanism, the magnitude of the driving force (torque), the material (elastic modulus) of the elastically deformable member, and the like. , Can be selected.
  • the rotation transmission mechanism can be used so that the output shaft of the motor serves as the rotation shaft of the rotation transmission mechanism, in addition to being incorporated inside the motor, or the output shaft of the motor and the rotation shaft of the rotation transmission mechanism are joined or joined. It can also be used by connecting it via a gear or the like. In either case, the rotation of the output shaft of the motor can be taken out as the rotation of the second rotating body of the rotation transmission mechanism. Alternatively, the output shaft of the motor can be connected to the second rotating body of the rotation transmission mechanism, and the rotation of the output shaft of the motor can be taken out as the rotation of the rotation shaft of the rotation transmission mechanism.
  • the axis of the output shaft of the motor and the axis of the second rotating body may be aligned with each other, and the output shaft and the second rotating body may be directly connected, or the gear attached to the output shaft may be connected.
  • the gear attached to the second rotating body may be meshed.
  • the teeth of the gear can be formed on the outer circumference of the second rotating body.
  • the rotation transmission mechanism according to the present invention has excellent durability, can improve the stability of operation and the efficiency of rotation transmission, and is a rotation shaft of a human-powered vehicle such as a bicycle, a unicycle for civil engineering, a rear car, a wheelchair, and a motor.
  • a human-powered vehicle such as a bicycle, a unicycle for civil engineering, a rear car, a wheelchair, and a motor.

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Abstract

The present invention comprises: a first rotor 16 that rotates with a rotational shaft 12; and a second rotor 17 that is disposed on one side of the first rotor 16 in the axial direction and rotatable about the rotational shaft 12. The body 18 of the first rotor 16 has, formed therein, one or more arc-shaped spaces 19 which are curved concentric with the outer circumference of the rotational shaft 12 around the axis of the rotational shaft 12 and penetrate the body 18 in the thickness direction. An elastic deformation member 20 is housed in a portion of each of the spaces 19. One or more pressing portions 23 which protrude toward the other side of the side plate 22 of the second rotor 17 in the axial direction are inserted into the spaces 19 from the one side of the first rotor 16 in the axial direction, and each of the elastic deformation members 20 is compressed between the peripheral wall of the space 19 and the pressing portion 23 during the relative rotation of the first rotor 16 and the second rotor 17.

Description

回転伝達機構及びモーターRotation transmission mechanism and motor
本発明は、入力エネルギーを効率的に出力することができる回転伝達機構及びモーターに関する。 The present invention relates to a rotation transmission mechanism and a motor capable of efficiently outputting input energy.
自転車、土木用一輪車、リヤカー等の車両は、車輪が、接地面からの摩擦抵抗を受けながら回転することにより移動する。従って、これらの車両は、停止（静止）状態から動き出すまでの間（発進時）に、大きな駆動力（入力エネルギー）を必要とする。また、これらの車両は、一旦動き出せば、小さな駆動力でも車輪を回転させることができるが、加速時及び登坂時等においても、大きな駆動力を必要とする。そして、これらの車両は、利用者が人力によって駆動するので、利用者が車輪（車両）に与える駆動力の大きさに比例して、利用者が車輪（車両）から受ける反発力も増大し、入力エネルギーの一部が、衝撃として利用者の膝、足首、腰等に跳ね返り、利用者の身体に大きな負荷を発生させるだけでなく、入力エネルギーを効率的に利用できず、推進力の低下にもつながっていた。
そして、これらの車両の急発進時、急加速時、及び登坂時に加え、積み荷の重量が重い時、更には、自転車を運転する場合に利用者の体重が重い時にも、利用者の身体への負荷（抗力）が大きくなり、その分、必要なエネルギーも増大していた。
また、自転車の場合、利用者の足の上下運動をクランクによって回転運動に変換するため、特に上死点及び下死点において、入力エネルギーをスムーズに車輪に伝達することは困難であり、膝や足首への負担増加を招くと共に、トルクの途切れ、スピードの低下が発生し、低速走行時には、ふらつきが発生し易く、走行の安定性が低下するという問題点があった。
これらの問題を解決するものとして、本発明者が出願した特許文献１には、ａ）回転軸の外周に突設される外周凸部を有する内部回転部材と、ｂ）回転軸に回動自在に挿設される側板部と、側板部外周に立設される外筒部と、外筒部内周側で側板部及び／又は外筒部に突設され外周凸部と交互に配置される内周凸部とを有する外部回転部材と、ｃ）外周凸部と内周凸部との間に配設される弾性変形部と、を備えた人力車両用回転伝達機構が開示されている。
また、特許文献２には、ペダルを漕いだ時のエネルギーをバネに蓄積してホイールの回転に利用する自転車が開示されている。 Vehicles such as bicycles, unicycles for civil engineering, and rear cars move by rotating the wheels while receiving frictional resistance from the ground contact surface. Therefore, these vehicles require a large driving force (input energy) from the stopped (resting) state to the start of movement (when starting). Further, once these vehicles start to move, the wheels can be rotated with a small driving force, but a large driving force is required even during acceleration and climbing a slope. Since these vehicles are driven by the user by human power, the repulsive force that the user receives from the wheels (vehicle) increases in proportion to the magnitude of the driving force that the user gives to the wheels (vehicle), and the input is input. Part of the energy bounces off the user's knees, ankles, hips, etc. as an impact, causing a large load on the user's body, as well as not being able to use the input energy efficiently and reducing propulsion. It was connected.
Then, in addition to when these vehicles are suddenly started, suddenly accelerated, and climbed a slope, when the weight of the cargo is heavy, and even when the weight of the user is heavy when driving a bicycle, the body of the user is affected. The load (drag) increased, and the required energy increased accordingly.
Further, in the case of a bicycle, since the vertical movement of the user's foot is converted into a rotational movement by the crank, it is difficult to smoothly transfer the input energy to the wheels, especially at the top dead center and the bottom dead center, and the knee and the like. In addition to increasing the burden on the ankle, there is a problem that torque is interrupted and speed is reduced, wobbling is likely to occur at low speeds, and running stability is reduced.
As a solution to these problems, Patent Document 1 filed by the present inventor states that a) an internal rotating member having an outer peripheral convex portion protruding from the outer periphery of the rotating shaft, and b) rotatable to the rotating shaft. The side plate portion to be inserted into the side plate portion, the outer cylinder portion erected on the outer peripheral portion of the side plate portion, and the inner peripheral portion protruding from the side plate portion and / or the outer cylinder portion on the inner peripheral side of the outer cylinder portion and alternately arranged with the outer peripheral convex portion. A rotation transmission mechanism for a human-powered vehicle is disclosed, which includes an external rotating member having a peripheral convex portion, and c) an elastically deformed portion disposed between the outer peripheral convex portion and the inner peripheral convex portion.
Further, Patent Document 2 discloses a bicycle that stores energy when pedaling in a spring and uses it for rotation of a wheel.
国際公開第２００９／０５４１６１号International Publication No. 2009/054161 米国特許第５０３５６７８号明細書U.S. Pat. No. 5,305,678
この特許文献１の人力車両用回転伝達機構は、初動時や走行中に外部から受ける負荷等によって生じる衝撃エネルギーや過大な入力エネルギーを弾性変形部に吸収蓄積し、人体への負荷を大幅に低減すると共に、入力エネルギーが減少した時や途切れた時に、蓄積されたエネルギーを取出して動力（回転力）として利用するものである。この人力車両用回転伝達機構を備えた人力車両は、利用者の身体への負担を増大させることなく、坂道や凹凸のある道を楽に移動したり、重たい荷物を運んだりすることを可能とし、極めて利便性に優れるものであった。 The rotation transmission mechanism for a human-powered vehicle of Patent Document 1 absorbs and accumulates impact energy and excessive input energy generated by a load received from the outside during initial movement or running in the elastically deformed portion, and significantly reduces the load on the human body. At the same time, when the input energy is reduced or interrupted, the stored energy is taken out and used as power (rotational force). The rickshaw equipped with this rotation transmission mechanism for rickshaws makes it possible to easily move on slopes and uneven roads and carry heavy luggage without increasing the burden on the user's body. It was extremely convenient.
しかしながら、特許文献１では、外周凸部及び内周凸部が、いずれも側面視して略扇形に形成され、外周凸部及び内周凸部のそれぞれの半径方向に直線状の傾斜面同士で弾性変形部を圧縮する構造となっている。このため、外周凸部の根元側が細く、大きな駆動力が加わった時に、根元に応力が集中して外周凸部の変形又は破損（折れ）が発生する可能性があった。また、外周凸部の変形（撓み）等が発生することにより、弾性変形部を充分に圧縮できない場合、弾性変形部に蓄積されるエネルギーが減少し、入力エネルギーを有効利用できず、回転力の伝達効率が低下するおそれもあった。しかも、外部回転部材の側板部と外筒部で囲まれた１つの空間の中に内部回転部材が保持され、内部回転部材の外周凸部と外部回転部材の内周凸部が、噛み合うようにして互いに支え合いながら内部回転部材と外部回転部材が回転するので、内部回転部材の移動、位置ずれ及び傾き等が、内部回転部材と外部回転部材の全体の動作に大きく影響を及ぼし、外周凸部の外周面及び内周凸部の外周面に摩耗が発生し易く、回転が不安定になり易いという欠点もあった。更に、外周凸部及び内周凸部のそれぞれの傾斜面を利用して弾性変形部を圧縮しており、外周凸部と内周凸部との間に充填される弾性変形部が、側面視して略扇形に形成されているので、弾性変形部の角部も損耗し易く、耐久性に欠ける面があった。また、それぞれが略扇形に形成された外周凸部と内周凸部で弾性変形部を圧縮する場合、弾性変形部の半径方向中心側と半径方向外周側で圧縮量（変形量）が異なるため、応答性が悪く、弾性変形部にダメージが蓄積され易く、弾性変形部の寿命低下にもつながっていた。 However, in Patent Document 1, both the outer peripheral convex portion and the inner peripheral convex portion are formed in a substantially fan shape when viewed from the side surface, and elastically deformed portions are formed between the inclined surfaces linear in the radial direction of the outer peripheral convex portion and the inner peripheral convex portion. It has a structure to compress. Therefore, when the root side of the outer peripheral convex portion is thin and a large driving force is applied, stress may be concentrated on the root and deformation or breakage (breakage) of the outer peripheral convex portion may occur. Further, if the elastically deformed portion cannot be sufficiently compressed due to the deformation (deflection) of the outer peripheral convex portion, the energy stored in the elastically deformed portion is reduced, the input energy cannot be effectively used, and the rotational force is increased. There was also a risk that the transmission efficiency would decrease. Moreover, the internal rotating member is held in one space surrounded by the side plate portion and the outer cylinder portion of the external rotating member, and the outer peripheral convex portion of the internal rotating member and the inner peripheral convex portion of the outer rotating member mesh with each other. Since the internal rotating member and the external rotating member rotate while supporting each other, the movement, misalignment, tilt, etc. of the internal rotating member greatly affect the overall operation of the internal rotating member and the external rotating member, and the outer periphery of the outer peripheral convex portion. There is also a drawback that wear is likely to occur on the surface and the outer peripheral surface of the inner peripheral convex portion, and rotation is likely to be unstable. Further, the elastically deformed portion is compressed by using the inclined surfaces of the outer peripheral convex portion and the inner peripheral convex portion, and the elastic deformed portion filled between the outer peripheral convex portion and the inner peripheral convex portion is substantially fan-shaped when viewed from the side. Since it is formed in, the corners of the elastically deformed portion are also easily worn, and there is a surface lacking in durability. Further, when the elastically deformed portion is compressed by the outer peripheral convex portion and the inner peripheral convex portion formed in a substantially fan shape, the compression amount (deformation amount) differs between the radial center side and the radial outer peripheral side of the elastic deformed portion, so that the response is obtained. The property was poor, damage was likely to accumulate in the elastically deformed portion, and the life of the elastically deformed portion was shortened.
また、特許文献２では、クランクシャフトに取付けた駆動板に複数の円弧状の開口部が形成され、各開口部の内部に、各開口部の長さ方向に沿うようにバネが保持されている。そして、クランクシャフトに回転可能に保持され、駆動板の一面側に配置されたホイールの他面側には複数のペグが設けられており、各ペグは駆動板の一面側から各開口部に挿入され、各バネの自由端と接している。従って、クランクシャフトに連結したペダルを漕いでクランクシャフトと共に駆動板を回転させると、駆動板とホイールが相対的に回転し、各開口部の内部でペグによってバネが圧縮され、ペダルからの入力エネルギー（一部）がバネに蓄積されながらホイールが回転する。そして、例えば、上死点及び下死点等において、ペダルからの入力が減少した時や途切れた時に、各開口部の内部でバネを伸張させることにより、各バネに蓄積されたエネルギーを各ペグを介してホイールに伝達させ、入力エネルギーの有効利用及びホイールの回転の安定化を図っている。しかし、円弧状の開口部に沿って湾曲させたバネは、開口部の長さ方向（円周方向）に沿ってスムーズに伸縮することが困難であり、バネの圧縮時（入力エネルギーの蓄積時）及び伸張時（蓄積エネルギーの利用時）に抵抗を受けてエネルギーが無駄に消費され易く、非効率で、動作の安定性に欠けるという問題がある。また、特許文献２には、開口部の内部にバネを保持するために、開口部の幅方向中央部に、開口部の長さ方向に沿ってロッドを取付け、このロッドにバネを外挿することが記載されている。しかし、開口部の内部にロッドを取付けた場合、ペグとロッドが干渉してペグを開口部に挿通することができないため、ペグでバネを圧縮することができず、バネにエネルギーを蓄積することは不可能であり、発明を実施（実現）することができない。更に、開口部の一面側はホイールによって部分的に覆われているが、他面側は開放されており、バネが露出している。よって、開口部の内部又はバネの隙間に異物が侵入し易く、バネ及びペグが外力又は風雨の影響を受けて破損し易いため、動作の安定性、耐久性に欠けるという問題もある。
以上のことから、人力車両用回転伝達機構の更なる構造の簡素化、各部品の寿命改善、動作の安定性向上、及び回転（動力）伝達の効率性向上に加え、自転車、土木用一輪車、リヤカー等の人力車両以外の用途の拡大が望まれていた。
本発明は、かかる事情に鑑みてなされたもので、簡素な構成で部品点数が少なく、量産性、耐久性及びメンテナンス性に優れ、動作の安定性及び回転伝達の効率性を向上させて、入力エネルギーを有効利用することができる回転伝達機構及びそれを用いることにより、始動時の負荷を軽減することができ、入力変動の影響を受け難く、動作の安定性に優れたモーターを提供することを目的とする。 Further, in Patent Document 2, a plurality of arc-shaped openings are formed in the drive plate attached to the crankshaft, and a spring is held inside each opening along the length direction of each opening. .. A plurality of pegs are provided on the other side of the wheel which is rotatably held by the crankshaft and arranged on one side of the drive plate, and each peg is inserted into each opening from one side of the drive plate. It is in contact with the free end of each spring. Therefore, when the drive plate is rotated together with the crankshaft by rowing the pedal connected to the crankshaft, the drive plate and the wheel rotate relatively, and the spring is compressed by the peg inside each opening, and the input energy from the pedal is applied. The wheel rotates while (part) is accumulated in the spring. Then, for example, at the top dead center and the bottom dead center, when the input from the pedal is reduced or interrupted, the energy stored in each spring is applied to each peg by extending the spring inside each opening. It is transmitted to the wheel via the wheel to effectively use the input energy and stabilize the rotation of the wheel. However, it is difficult for a spring curved along an arc-shaped opening to expand and contract smoothly along the length direction (circumferential direction) of the opening, and when the spring is compressed (when input energy is stored). ) And during expansion (when using stored energy), energy is likely to be wasted, inefficient, and lacks operational stability. Further, in Patent Document 2, in order to hold the spring inside the opening, a rod is attached to the central portion in the width direction of the opening along the length direction of the opening, and the spring is extrapolated to the rod. It is stated that. However, when the rod is installed inside the opening, the peg and the rod interfere with each other and the peg cannot be inserted into the opening. Therefore, the peg cannot compress the spring and stores energy in the spring. Is impossible, and the invention cannot be implemented (realized). Further, one side of the opening is partially covered by the wheel, but the other side is open and the spring is exposed. Therefore, foreign matter easily enters the inside of the opening or the gap between the springs, and the springs and pegs are easily damaged by the influence of external force or wind and rain, so that there is a problem that the stability and durability of the operation are lacking.
From the above, in addition to further simplifying the structure of the rotation transmission mechanism for human-powered vehicles, improving the life of each part, improving the stability of operation, and improving the efficiency of rotation (power) transmission, bicycles, unicycles for civil engineering, etc. It has been desired to expand applications other than human-powered vehicles such as rear cars.
The present invention has been made in view of such circumstances, has a simple configuration, a small number of parts, is excellent in mass productivity, durability and maintainability, improves operation stability and rotation transmission efficiency, and inputs. By using a rotation transmission mechanism that can effectively utilize energy and using it, it is possible to reduce the load at the time of starting, to provide a motor that is not easily affected by input fluctuations and has excellent operational stability. The purpose.
前記目的に沿う第１の発明に係る回転伝達機構は、回転軸と共に回転する第１の回転体と、該第１の回転体の軸方向一側に配置され前記回転軸を中心に回転可能な第２の回転体とを備え、
前記第１の回転体は、前記回転軸と一体に形成される又は前記回転軸の外周に保持される本体部を有し、該本体部には、前記回転軸の軸心を中心として該回転軸の外周に同心円状に湾曲し、該本体部を厚さ方向に貫通する１又は複数の円弧状の空間部が形成され、該各空間部の一部に弾性変形部材が収容されており、
前記第２の回転体は、前記回転軸又は前記第１の回転体に回転可能に保持される側板部と、該側板部の軸方向他側に突出する１又は複数の押圧部とを有し、
該各押圧部は、前記第１の回転体の軸方向一側から前記各空間部に挿入されて、前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記各空間部の周壁と前記各押圧部との間で前記弾性変形部材が圧縮される。 The rotation transmission mechanism according to the first invention according to the above object is a first rotating body that rotates together with a rotating shaft, and is arranged on one side in the axial direction of the first rotating body and can rotate about the rotating shaft. With a second rotating body,
The first rotating body has a main body portion formed integrally with the rotating shaft or held on the outer periphery of the rotating shaft, and the main body portion rotates around the axis of the rotating shaft. One or a plurality of arc-shaped space portions that are concentrically curved on the outer circumference of the shaft and penetrate the main body portion in the thickness direction are formed, and an elastic deformation member is housed in a part of each space portion.
The second rotating body has a side plate portion rotatably held by the rotating shaft or the first rotating body, and one or a plurality of pressing portions projecting to the other side in the axial direction of the side plate portion. ,
Each of the pressing portions is inserted into each of the space portions from one side in the axial direction of the first rotating body, and while the first rotating body and the second rotating body rotate relative to each other, the pressing portion is described. The elastically deforming member is compressed between the peripheral wall of each space portion and each of the pressing portions.
第１の発明に係る回転伝達機構において、前記各押圧部は、初期状態で前記各弾性変形部材と助走区間を隔てて配置され、前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記弾性変形部材と接近することが好ましい。 In the rotation transmission mechanism according to the first invention, each of the pressing portions is arranged with the elastically deforming member and the approach section separated from each other in an initial state, and the first rotating body and the second rotating body are relative to each other. It is preferable to approach the elastically deforming member while rotating to.
第１の発明に係る回転伝達機構において、前記各押圧部は、前記各弾性変形部材に向かって拡開した窪み部を有し、初期状態で該窪み部の開口側の周縁で前記各弾性変形部材と接触してもよい。 In the rotation transmission mechanism according to the first invention, each of the pressing portions has a recessed portion that expands toward each of the elastically deformed members, and in the initial state, each of the elastically deformed portions is formed at the peripheral edge on the opening side of the recessed portion. It may come into contact with the member.
第１の発明に係る回転伝達機構において、前記第１の回転体は、前記本体部と一体に形成されて又は前記本体部に取付けられて、該本体部の軸方向他側で前記各空間部を閉塞する閉塞部を有することができる。 In the rotation transmission mechanism according to the first invention, the first rotating body is formed integrally with the main body or attached to the main body, and the space portions on the other side in the axial direction of the main body. Can have a closure that occludes.
第１の発明に係る回転伝達機構において、前記第２の回転体は、前記第１の回転体の軸方向他側で前記回転軸又は前記第１の回転体に回転可能に保持される外側板を有し、該外側板は、前記各空間部を貫通する前記各押圧部により前記側板部と連結されてもよい。 In the rotation transmission mechanism according to the first invention, the second rotating body is an outer plate rotatably held by the rotating shaft or the first rotating body on the other side in the axial direction of the first rotating body. The outer plate may be connected to the side plate portion by the pressing portion penetrating the space portion.
第１の発明に係る回転伝達機構において、前記第２の回転体は、前記各押圧部の先側に設けられ、前記第１の回転体の軸方向他側で前記各空間部の一部又は全部を覆うカバー部を有することもできる。 In the rotation transmission mechanism according to the first invention, the second rotating body is provided on the front side of each pressing portion, and is a part of the space portion or a part of the space portion on the other side in the axial direction of the first rotating body. It is also possible to have a cover portion that covers the whole.
第１の発明に係る回転伝達機構において、前記第１、第２の回転体は、互いに係合し、前記第１の回転体と前記第２の回転体の相対回転を案内しつつ、相対回転量を規制する少なくとも１対の案内手段を備えていることが好ましい。 In the rotation transmission mechanism according to the first invention, the first and second rotating bodies engage with each other and rotate relative to each other while guiding the relative rotation of the first rotating body and the second rotating body. It is preferable to have at least one pair of guiding means for regulating the amount.
第１の発明に係る回転伝達機構において、前記各空間部の円周方向の一側及び他側にそれぞれ前記弾性変形部材が収容されてもよい。 In the rotation transmission mechanism according to the first invention, the elastically deforming member may be accommodated on one side and the other side in the circumferential direction of each of the space portions.
前記目的に沿う第２の発明に係る回転伝達機構は、回転軸と共に回転する第１の回転体と、該第１の回転体の軸方向一側に配置され前記回転軸を中心に回転可能な第２の回転体とを備え、
前記第１の回転体は、前記回転軸と一体に形成される又は前記回転軸の外周に保持される側板部と、該側板部の軸方向一側に突出する１又は複数の押圧部とを有し、
前記第２の回転体は、前記回転軸又は前記第１の回転体に回転可能に保持される本体部を有し、該本体部には、前記回転軸の軸心を中心として該回転軸の外周に同心円状に湾曲し、該本体部を厚さ方向に貫通して、該本体部の軸方向他側から前記各押圧部が挿入される１又は複数の円弧状の空間部が形成され、該各空間部の一部に弾性変形部材が収容されており、
前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記各押圧部と前記各空間部の周壁との間で前記弾性変形部材が圧縮される。 The rotation transmission mechanism according to the second invention according to the above object is a first rotating body that rotates together with a rotating shaft, and is arranged on one side of the first rotating body in the axial direction and can rotate about the rotating shaft. With a second rotating body,
The first rotating body includes a side plate portion formed integrally with the rotating shaft or held on the outer periphery of the rotating shaft, and one or a plurality of pressing portions protruding in one axial direction of the side plate portion. Have and
The second rotating body has a main body portion rotatably held by the rotating shaft or the first rotating body, and the main body portion has a main body portion of the rotating shaft centered on the axis of the rotating shaft. One or a plurality of arc-shaped space portions are formed, which are concentrically curved on the outer periphery and penetrate the main body portion in the thickness direction to insert the respective pressing portions from the other side in the axial direction of the main body portion. An elastically deformable member is housed in a part of each of the spaces.
While the first rotating body and the second rotating body rotate relatively, the elastically deforming member is compressed between each pressing portion and the peripheral wall of each space portion.
第２の発明に係る回転伝達機構において、前記各押圧部は、初期状態で前記各弾性変形部材と助走区間を隔てて配置され、前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記弾性変形部材と接近することが好ましい。 In the rotation transmission mechanism according to the second invention, each of the pressing portions is arranged with the elastically deforming member and the approach section separated from each other in the initial state, and the first rotating body and the second rotating body are relative to each other. It is preferable to approach the elastically deforming member while rotating to.
第２の発明に係る回転伝達機構において、前記各押圧部は、前記各弾性変形部材に向かって拡開した窪み部を有し、初期状態で該窪み部の開口側の周縁で前記各弾性変形部材と接触してもよい。 In the rotation transmission mechanism according to the second invention, each of the pressing portions has a recessed portion that expands toward each of the elastically deformed members, and in the initial state, each of the elastically deformed portions is formed at the peripheral edge on the opening side of the recessed portion. It may come into contact with the member.
第２の発明に係る回転伝達機構において、前記第２の回転体は、前記本体部と一体に形成されて又は前記本体部に取付けられて、該本体部の軸方向一側で前記各空間部を閉塞する閉塞部を有することができる。 In the rotation transmission mechanism according to the second invention, the second rotating body is formed integrally with the main body portion or attached to the main body portion, and the space portions on one side in the axial direction of the main body portion. Can have a closure that occludes.
第２の発明に係る回転伝達機構において、前記第１の回転体は、前記第２の回転体の軸方向一側で前記回転軸と一体に形成される又は前記回転軸の外周に保持される外側板を有し、該外側板は、前記各空間部を貫通する前記各押圧部により前記側板部と連結されてもよい。 In the rotation transmission mechanism according to the second invention, the first rotating body is formed integrally with the rotating shaft on one side in the axial direction of the second rotating body or is held on the outer periphery of the rotating shaft. It has an outer plate, and the outer plate may be connected to the side plate portion by each of the pressing portions penetrating the respective space portions.
第２の発明に係る回転伝達機構において、前記第１の回転体は、前記各押圧部の先側に設けられ、前記第２の回転体の軸方向一側で前記各空間部の一部又は全部を覆うカバー部を有することもできる。 In the rotation transmission mechanism according to the second invention, the first rotating body is provided on the front side of each pressing portion, and a part or a part of each space portion on one side in the axial direction of the second rotating body. It is also possible to have a cover portion that covers the whole.
第２の発明に係る回転伝達機構において、前記第１、第２の回転体は、互いに係合し、前記第１の回転体と前記第２の回転体の相対回転を案内しつつ、相対回転量を規制する少なくとも１対の案内手段を備えていることが好ましい。 In the rotation transmission mechanism according to the second invention, the first and second rotating bodies engage with each other and rotate relative to each other while guiding the relative rotation of the first rotating body and the second rotating body. It is preferable to have at least one pair of guiding means for regulating the amount.
第２の発明に係る回転伝達機構において、前記各空間部の円周方向の一側及び他側にそれぞれ前記弾性変形部材が収容されてもよい。 In the rotation transmission mechanism according to the second invention, the elastically deforming member may be accommodated on one side and the other side in the circumferential direction of each of the space portions.
前記目的に沿う第３の発明に係るモーターは、第１又は第２の発明に係る回転伝達機構を備えたローターを有し、前記第２の回転体の正転及び逆転を前記弾性変形部材を介して前記第１の回転体に伝達し、前記回転軸から出力する。 The motor according to the third invention according to the above object has a rotor provided with the rotation transmission mechanism according to the first or second invention, and the elastically deforming member is used to rotate the second rotating body forward and reverse. It is transmitted to the first rotating body via the rotating body and is output from the rotating shaft.
第１及び第２の発明に係る回転伝達機構によれば、第１の回転体の回転を第２の回転体に伝達させる間又は第２の回転体の回転を第１の回転体に伝達させる間に弾性変形部材を圧縮して入力エネルギーの一部を蓄積することにより、初動時の負荷を低減し、衝撃を吸収しながら小さな力で駆動を開始することができると共に、入力エネルギーが小さくなったり途切れたりした時には、弾性変形部材の復元により、蓄積された圧縮（弾性）エネルギーを回転エネルギーに変換して有効利用し、出力エネルギーの変動を抑えて、回転を安定化させることができる。また、各空間部の中に、一組の押圧部と弾性変形部材が、独立して収容されることにより、第１の回転体と第２の回転体が各押圧部を介して支え合うので、位置ずれや傾き等が発生し難く、確実に各弾性変形部材を圧縮することができ、動作の安定性に優れ、押圧部の損耗を低減することができる。 According to the rotation transmission mechanism according to the first and second inventions, the rotation of the first rotating body is transmitted to the second rotating body, or the rotation of the second rotating body is transmitted to the first rotating body. By compressing the elastically deforming member in between and accumulating a part of the input energy, the load at the time of initial movement can be reduced, the drive can be started with a small force while absorbing the impact, and the input energy becomes small. When it is interrupted or interrupted, the stored compression (elastic) energy can be converted into rotational energy and effectively used by restoring the elastically deforming member, the fluctuation of the output energy can be suppressed, and the rotation can be stabilized. Further, since a set of pressing portions and elastically deforming members are independently housed in each space portion, the first rotating body and the second rotating body support each other via the respective pressing portions. , Positional deviation and inclination are unlikely to occur, each elastically deformed member can be reliably compressed, operation stability is excellent, and wear of the pressing portion can be reduced.
第３の発明に係るモーターによれば、第１又は第２の発明に係る回転伝達機構を備えたローターを有し、第２の回転体の正転及び逆転を弾性変形部材を介して第１の回転体に伝達し、回転軸から出力することにより、始動時の負荷を低減することができ、入力変動の影響を受け難く、回転軸を安定的に回転させて、ローターの回転エネルギーを回転軸から効率的に取出すことができる。 According to the motor according to the third invention, it has a rotor provided with the rotation transmission mechanism according to the first or second invention, and the forward rotation and the reverse rotation of the second rotating body are performed by the first elastically deforming member. By transmitting to the rotating body and outputting from the rotating shaft, the load at the time of starting can be reduced, it is not easily affected by input fluctuations, the rotating shaft is stably rotated, and the rotational energy of the rotor is rotated. It can be efficiently taken out from the shaft.
（Ａ）は本発明の第１の実施例に係る回転伝達機構を備えた自転車の要部平面図であり、（Ｂ）は（Ａ）のＡ－Ａ線矢視断面図である。(A) is a plan view of a main part of a bicycle provided with a rotation transmission mechanism according to a first embodiment of the present invention, and (B) is a cross-sectional view taken along the line AA of (A). （Ａ）は同回転伝達機構の第１の回転体を示す側面図であり、（Ｂ）は（Ａ）のＢ－Ｂ線矢視断面図である。(A) is a side view showing a first rotating body of the rotation transmission mechanism, and (B) is a cross-sectional view taken along the line BB of (A). （Ａ）は同回転伝達機構の第２の回転体を示す側面図であり、（Ｂ）は（Ａ）のＣ－Ｃ線矢視断面図である。(A) is a side view showing a second rotating body of the same rotation transmission mechanism, and (B) is a cross-sectional view taken along the line CC of (A). 同回転伝達機構の要部正断面図である。It is a cross-sectional view of the main part of the rotation transmission mechanism. （Ａ）、（Ｂ）はそれぞれ同回転伝達機構の第１及び第２の変形例を示す要部正断面図である。(A) and (B) are regular cross-sectional views of a main part showing first and second modified examples of the same rotation transmission mechanism, respectively. （Ａ）は同回転伝達機構の第３の変形例を示す側面図であり、（Ｂ）は（Ａ）のＤ－Ｄ線矢視断面図である。(A) is a side view showing a third modification of the rotation transmission mechanism, and (B) is a cross-sectional view taken along the line DD of (A). （Ａ）は同回転伝達機構の第４の変形例を示す側面図であり、（Ｂ）は（Ａ）のＥ－Ｅ線矢視断面図である。(A) is a side view showing a fourth modification of the rotation transmission mechanism, and (B) is a cross-sectional view taken along the line EE of (A). （Ａ）、（Ｂ）はそれぞれ本発明の第２の実施例に係る回転伝達機構を用いたモーターを示す要部側断面図及び要部正断面図である。(A) and (B) are a cross-sectional view of a main part and a normal cross-sectional view of a main part showing a motor using the rotation transmission mechanism according to the second embodiment of the present invention, respectively. 本発明の第３の実施例に係る回転伝達機構を備えた車椅子の要部正面一部破断図である。It is a partial frontal fracture view of a main part of a wheelchair provided with a rotation transmission mechanism according to a third embodiment of the present invention. 図９のＦ－Ｆ線矢視側面図である。FIG. 9 is a side view taken along the line FF of FIG. 図１０のＧ－Ｇ線矢視端面図である。FIG. 10 is an end view taken along the line GG of FIG. 同回転伝達機構の第１の動作を示す要部側面図である。It is a side view of the main part which shows the 1st operation of the rotation transmission mechanism. 同回転伝達機構の第２の動作を示す要部側面図である。It is a side view of the main part which shows the 2nd operation of the rotation transmission mechanism.
続いて、添付した図面を参照しつつ、本発明を具体化した実施例につき説明し、本発明の理解に供する。
図１～図４に示す本発明の第１の実施例に係る回転伝達機構１０は、例えば既存の自転車（人力車両の一例）の回転軸１２に取付けられて、走行時（回転軸１２の回転時）に入力エネルギーの一部を蓄積し、入力エネルギーが減少した時や途切れた時に、蓄積されたエネルギーを回転エネルギーとして効率的に取出して有効利用することにより、初動時、急発進時、急加速時、登坂時、及び低速走行時等における人体への負荷を低減しつつ、走行（回転伝達）安定性の向上を図るものである。
図１（Ａ）に示すように、回転軸１２は自転車のフレーム（図示せず）に設けられた回転軸保持部１３によって回転可能に保持されており、回転軸１２の両端部には、１８０度の位相差で左右のクランクアーム１４、１５が取付けられている。そして、各クランクアーム１４、１５の先側にはペダル（図示せず）が回転可能に設けられ、自転車１１の使用者（運転者）がペダルを漕ぐことにより、クランクアーム１４、１５と共に回転軸１２が回転する構造となっている。 Subsequently, an embodiment embodying the present invention will be described with reference to the attached drawings, and the present invention will be understood.
The rotation transmission mechanism 10 according to the first embodiment of the present invention shown in FIGS. 1 to 4 is attached to, for example, the rotation shaft 12 of an existing bicycle (an example of a human-powered vehicle) and is running (rotation of the rotation shaft 12). By accumulating a part of the input energy at (time), and when the input energy decreases or is interrupted, the accumulated energy is efficiently taken out as rotational energy and effectively used, so that the initial movement, sudden start, and sudden This is intended to improve running (rotational transmission) stability while reducing the load on the human body during acceleration, climbing a slope, running at low speed, and the like.
As shown in FIG. 1 (A), the rotating shaft 12 is rotatably held by a rotating shaft holding portion 13 provided on a bicycle frame (not shown), and 180 is held at both ends of the rotating shaft 12. The left and right crank arms 14 and 15 are attached with a phase difference of degrees. A pedal (not shown) is rotatably provided on the front side of each of the crank arms 14 and 15, and the user (driver) of the bicycle 11 pedals the pedal to rotate the shaft together with the crank arms 14 and 15. The structure is such that 12 rotates.
以下、回転伝達機構１０の詳細について説明する。
図１（Ｂ）、図４に示すように、回転伝達機構１０は、回転軸１２と共に回転する第１の回転体１６と、第１の回転体１６の軸方向一側（図４では左側）に配置され回転軸１２を中心に回転可能な第２の回転体１７を備えている。
第１の回転体１６は、図１（Ｂ）、図２（Ａ）、（Ｂ）、図４に示すように、回転軸１２の外周に保持される略円板状の本体部１８を有する。この本体部１８には、回転軸１２の軸心を中心として回転軸１２の外周に同心円状に湾曲し、本体部１８を厚さ方向に貫通する複数（ここでは４つ）の円弧状の空間部１９が形成されている。そして、各空間部１９の一部（ここでは各空間部１９の円周方向の一側）に弾性変形部材２０が収容されている。弾性変形部材２０としては、エラストマーが好ましく、熱可塑性エラストマーが好適に用いられるが、ブタジエンゴム、ウレタンゴム、シリコーンゴム等の合成ゴムを用いることもできる。弾性変形部材の形状としては、球状又は円柱状が好ましいが、これに限定されるものではない。また、弾性変形部材の伸縮性を高めるために、中空部を有する円筒状等に形成してもよい。 Hereinafter, the details of the rotation transmission mechanism 10 will be described.
As shown in FIGS. 1B and 4, the rotation transmission mechanism 10 has a first rotating body 16 that rotates together with the rotating shaft 12 and one side of the first rotating body 16 in the axial direction (left side in FIG. 4). It is provided with a second rotating body 17 which is arranged in and can rotate around a rotating shaft 12.
As shown in FIGS. 1 (B), 2 (A), (B), and 4, the first rotating body 16 has a substantially disk-shaped main body 18 held on the outer circumference of the rotating shaft 12. .. The main body 18 is a plurality of (here, four) arc-shaped spaces that are concentrically curved around the outer circumference of the rotary shaft 12 around the axis of the rotary shaft 12 and penetrate the main body 18 in the thickness direction. Part 19 is formed. The elastic deformation member 20 is housed in a part of each space portion 19 (here, one side in the circumferential direction of each space portion 19). As the elastically deformable member 20, an elastomer is preferable, and a thermoplastic elastomer is preferably used, but synthetic rubber such as butadiene rubber, urethane rubber, and silicone rubber can also be used. The shape of the elastically deformable member is preferably spherical or columnar, but is not limited thereto. Further, in order to increase the elasticity of the elastically deformable member, it may be formed in a cylindrical shape or the like having a hollow portion.
第２の回転体１７は、図１（Ｂ）、図３（Ａ）、（Ｂ）、図４に示すように、回転軸１２に挿着されたベアリング（軸受の一種）２１（図４）を介して回転軸１２に回転可能に保持される側板部２２と、側板部２２の軸方向他側（ここでは右側）に突出する複数（ここでは４つ）の押圧部２３を有している。そして、各押圧部２３は、第１の回転体１６の軸方向一側（ここでは左側）から各空間部１９に挿入されるが、初期状態では図１（Ｂ）に示すように、各弾性変形部材２０と助走区間２４を隔てて配置されている。ここで、押圧部は、側板部と一体に形成することが好ましいが、別途作製したものを螺子止め又は溶接等により取付けてもよい。本実施例では、側板部２２の一面側（ここでは左側）に自転車のチェーンリング２５が取付けられているが、回転伝達機構を自転車専用に製造する場合は、チェーンリングを側板部と一体に形成することもできる。また、回転軸と第１の回転体（本体部）を一体に形成することもできる。なお、側板部は回転軸に回転可能に保持されていればよく、必ずしもベアリングを用いなくてもよい。 As shown in FIGS. 1 (B), 3 (A), (B), and 4 of FIG. 1, the second rotating body 17 is a bearing (a type of bearing) 21 (a type of bearing) 21 (FIG. 4) inserted into the rotating shaft 12. It has a side plate portion 22 rotatably held by the rotating shaft 12 via the above, and a plurality of (four here) pressing portions 23 projecting to the other side (here, the right side) in the axial direction of the side plate portion 22. .. Each of the pressing portions 23 is inserted into each space portion 19 from one side (here, the left side) in the axial direction of the first rotating body 16, but in the initial state, each elasticity is as shown in FIG. 1 (B). The deformable member 20 and the approach section 24 are separated from each other. Here, the pressing portion is preferably formed integrally with the side plate portion, but a separately manufactured portion may be attached by screwing, welding, or the like. In this embodiment, the bicycle chain ring 25 is attached to one side (here, the left side) of the side plate portion 22, but when the rotation transmission mechanism is manufactured exclusively for the bicycle, the chain ring is formed integrally with the side plate portion. You can also do it. Further, the rotating shaft and the first rotating body (main body portion) can be integrally formed. The side plate portion may be rotatably held by the rotating shaft, and a bearing does not necessarily have to be used.
以上の構成により、自転車の使用者（運転者）がペダルを漕ぐと、まず回転軸１２と共に第１の回転体１６が図１（Ｂ）の矢印ａの方向に回転する。第１の回転体１６と第２の回転体１７が相対的に回転する間に、各空間部１９に収容された各弾性変形部材２０と静止状態の各押圧部２３が接近し、各空間部１９の周壁と各押圧部２３との間で各弾性変形部材２０が圧縮される。最初は各弾性変形部材２０が弾性変形するが、所定量変形した後は、回転軸１２（第１の回転体１６）の回転力（入力エネルギー）が各弾性変形部材２０を介して各押圧部２３に伝達され、第１の回転体１６と第２の回転体１７が略一体となって回転する。そして、第２の回転体１７に取付けられたチェーンリング２５が回転することにより、チェーンリング２５に巻回されるチェーン（図示せず）を介して回転が車輪に伝達され自転車が走行を開始する。 With the above configuration, when the bicycle user (driver) pedals, the first rotating body 16 first rotates together with the rotating shaft 12 in the direction of the arrow a in FIG. 1 (B). While the first rotating body 16 and the second rotating body 17 rotate relatively, each elastic deforming member 20 housed in each space portion 19 and each pressing portion 23 in a stationary state approach each other, and each space portion Each elastically deforming member 20 is compressed between the peripheral wall of 19 and each pressing portion 23. Initially, each elastically deforming member 20 is elastically deformed, but after being deformed by a predetermined amount, the rotational force (input energy) of the rotating shaft 12 (first rotating body 16) is applied to each pressing portion via each elastically deforming member 20. It is transmitted to 23, and the first rotating body 16 and the second rotating body 17 rotate substantially integrally. Then, when the chain ring 25 attached to the second rotating body 17 rotates, the rotation is transmitted to the wheels via a chain (not shown) wound around the chain ring 25, and the bicycle starts running. ..
以上の動作において、第１の回転体１６の回転を第２の回転体１７に伝達させる間に各弾性変形部材２０を圧縮して入力エネルギーの一部を蓄積することにより、初動時の衝撃を吸収しながら小さな力で駆動を開始することができる。そして、入力エネルギーが小さくなったり途切れたりした時（例えばクランクアーム１４、１５の回転中に上死点若しくは下死点を通過する時又は登坂時）には、各弾性変形部材２０の復元により、蓄積された圧縮（弾性）エネルギーを回転エネルギーに変換して有効利用し、回転（走行）を安定化させることができる。 In the above operation, while the rotation of the first rotating body 16 is transmitted to the second rotating body 17, each elastically deforming member 20 is compressed and a part of the input energy is stored to generate an impact at the time of initial movement. The drive can be started with a small force while absorbing. Then, when the input energy becomes small or interrupted (for example, when passing through the top dead center or the bottom dead center during the rotation of the crank arms 14 and 15 or when climbing a slope), the elastic deformation member 20 is restored by restoration. The accumulated compression (elastic) energy can be converted into rotational energy and effectively used to stabilize the rotation (running).
このとき、図１（Ｂ）、図２（Ａ）に示すように、各空間部１９が、回転軸１２の軸心を中心として回転軸１２の外周に同心円状に湾曲した円弧状に形成されているので、各押圧部２３は各空間部１９の内部をスムーズに移動することができる。そして、各押圧部２３により、各弾性変形部材２０の外周面をほぼ均等に圧縮することができ、各部の動作を安定させて、効率的に回転を伝達することができる。本実施例では、図１（Ｂ）、図３（Ａ）に示すように、各押圧部２３の各弾性変形部材２０との接触位置に、側面視して半円形の突起部２６を形成した。押圧部２３に突起部２６を設けることにより、弾性変形部材２０を圧縮する際に圧力が集中し、弾性変形部材２０が変形し易くなって効率的にエネルギーを蓄積することができる。突起部は半円柱状又は半球状に形成することが好ましいが、その形状はこれらに限定されるものではなく、適宜、選択することができる。また、突起部の数も適宜、選択することができ、複数の突起部により押圧部の表面に凹凸を形成してもよい。 At this time, as shown in FIGS. 1 (B) and 2 (A), each space portion 19 is formed in an arc shape concentrically curved around the outer circumference of the rotating shaft 12 with the axis of the rotating shaft 12 as the center. Therefore, each pressing portion 23 can smoothly move inside each space portion 19. Then, each pressing portion 23 can compress the outer peripheral surface of each elastically deforming member 20 substantially evenly, stabilize the operation of each portion, and efficiently transmit the rotation. In this embodiment, as shown in FIGS. 1B and 3A, a semicircular protrusion 26 is formed at a contact position of each pressing portion 23 with each elastically deforming member 20 when viewed from the side. .. By providing the protrusion 26 on the pressing portion 23, the pressure is concentrated when the elastically deforming member 20 is compressed, the elastically deforming member 20 is easily deformed, and energy can be efficiently stored. The protrusions are preferably formed in a semi-cylindrical or hemispherical shape, but the shape thereof is not limited to these, and can be appropriately selected. Further, the number of protrusions can be appropriately selected, and the surface of the pressing portion may have irregularities formed by the plurality of protrusions.
また、各空間部１９の体積は、図１（Ｂ）に示すように、各空間部１９に占める各弾性変形部材２０と各押圧部２３の体積の合計よりも大きく、各弾性変形部材２０と各押圧部２３の間には隙間があり、初期状態における助走区間２４となっている。よって、各空間部１９の中で、各弾性変形部材２０と各押圧部２３がほぼ無負荷で相対的に助走区間２４を移動して接近することができ、勢いを付けて各弾性変形部材２０を圧縮することが可能となり、各弾性変形部材２０に蓄積されるエネルギーを高めることがきできる。更に、図１（Ｂ）、図４に示すように、押圧部２３の外径を空間部１９の幅（半径方向寸法）よりも小さく形成することにより、第１の回転体１６と第２の回転体１７が相対的に回転する間に、空間部１９の周壁と押圧部２３の外周面が接触することを防止できる。 Further, as shown in FIG. 1B, the volume of each space portion 19 is larger than the total volume of each elastically deforming member 20 and each pressing portion 23 occupying each space portion 19, and the elastically deforming member 20 and each elastically deforming member 20. There is a gap between the pressing portions 23, which is the approach section 24 in the initial state. Therefore, in each space portion 19, each elastically deforming member 20 and each pressing portion 23 can relatively move and approach the approach section 24 with almost no load, and each elastically deforming member 20 gains momentum. Can be compressed, and the energy stored in each elastically deforming member 20 can be increased. Further, as shown in FIGS. 1B and 4, the outer diameter of the pressing portion 23 is formed to be smaller than the width (radial dimension) of the space portion 19, so that the first rotating body 16 and the second rotating body 16 and the second rotating body 16 are formed. While the rotating body 17 rotates relatively, it is possible to prevent the peripheral wall of the space portion 19 from coming into contact with the outer peripheral surface of the pressing portion 23.
本実施例では、図１（Ａ）、（Ｂ）、図３（Ａ）、（Ｂ）、図４に示すように、側板部２２の外周に筒状部２７を設けた。この筒状部２７で第１の回転体１６（本体部１８）の外周を覆って保護することができる。筒状部２７を設ける場合、筒状部２７の内径を本体部１８の外径よりもやや大きく形成することにより、駆動時に本体部１８が筒状部２７と接触することなくスムーズに回転し、エネルギーのロスや騒音の発生を防止できる。なお、筒状部２７は省略することもできる。 In this embodiment, as shown in FIGS. 1A, 1B, 3A, 3B, and 4B, a tubular portion 27 is provided on the outer periphery of the side plate portion 22. The tubular portion 27 can cover and protect the outer periphery of the first rotating body 16 (main body portion 18). When the tubular portion 27 is provided, the inner diameter of the tubular portion 27 is formed to be slightly larger than the outer diameter of the main body portion 18, so that the main body portion 18 rotates smoothly without contacting the tubular portion 27 during driving. It is possible to prevent energy loss and noise generation. The tubular portion 27 may be omitted.
また、本実施例では、図１（Ｂ）、図４に示すように、第１、第２の回転体１６、１７は、互いに係合し、第１の回転体１６と第２の回転体１７の相対回転を案内しつつ、相対回転量を規制する４対の案内手段２８を備えている。具体的には、図１（Ｂ）、図２（Ａ）、図４に示すように、第１の回転体１６の本体部１８に、回転軸１２の軸心を中心として円弧状に湾曲し、本体部１８を厚さ方向に貫通する４つの案内孔２８ａを形成し、図１（Ｂ）、図３（Ａ）、（Ｂ）、図４に示すように、第２の回転体１７も側板部２２の軸方向他側に、４つの円柱状の案内用突起２８ｂを形成して、各案内用突起２８ｂを本体部１８の軸方向一側から各案内孔２８ａに挿入した。案内孔２８ａと案内用突起２８ｂが対となった案内手段２８により、第１の回転体１６と第２の回転体１７をスムーズに相対回転させることができると共に、第１の回転体１６と第２の回転体１７の相対回転量を規制して、弾性変形部材２０が過度に変形する（圧縮される）ことを防止し、弾性変形部材２０の耐久性を高めることができる。ここで、案内用突起２８ｂの外周と案内孔２８ａの内周には隙間があり、案内用突起２８ｂは抵抗を受けることなく案内孔２８ａに沿って移動することができる。なお、案内手段は第１の回転体と第２の回転体の相対回転を案内しつつ、相対回転量を規制することができればよく、その構成及び配置は適宜、選択することができる。例えば、本体部を厚さ方向に貫通する案内孔の代わりに、本体部の軸方向一側に開口する案内溝を形成してもよいし、本体部側に案内用突起を形成し、側板部側に案内孔又は案内溝を形成してもよい。また、本体部の外周に案内孔又は案内溝を形成し、筒状部の内周側に案内用突起を形成してもよいし、本体部の外周に案内用突起を形成し、筒状部の内周側に案内孔又は案内溝を形成してもよい。なお、案内手段は少なくとも１対あればよいが、動作の安定性からは２対以上であることが好ましく、等角度間隔で配置されることが更に好ましい。 Further, in the present embodiment, as shown in FIGS. 1B and 4, the first and second rotating bodies 16 and 17 are engaged with each other, and the first rotating body 16 and the second rotating body 16 and the second rotating body are engaged with each other. It is provided with four pairs of guiding means 28 that regulate the relative rotation amount while guiding the relative rotation of 17. Specifically, as shown in FIGS. 1 (B), 2 (A), and 4, the main body 18 of the first rotating body 16 is curved in an arc shape about the axis of the rotating shaft 12. , Four guide holes 28a penetrating the main body 18 in the thickness direction are formed, and as shown in FIGS. 1 (B), 3 (A), (B) and 4, the second rotating body 17 is also formed. Four columnar guide protrusions 28b were formed on the other side of the side plate portion 22 in the axial direction, and each guide protrusion 28b was inserted into each guide hole 28a from one side in the axial direction of the main body portion 18. The guide means 28 in which the guide hole 28a and the guide protrusion 28b are paired can smoothly rotate the first rotating body 16 and the second rotating body 17 relative to each other, and the first rotating body 16 and the first rotating body 16 and the second rotating body 17 can be smoothly rotated. It is possible to regulate the relative rotation amount of the rotating body 17 of 2 to prevent the elastically deforming member 20 from being excessively deformed (compressed) and to improve the durability of the elastically deforming member 20. Here, there is a gap between the outer circumference of the guide protrusion 28b and the inner circumference of the guide hole 28a, and the guide protrusion 28b can move along the guide hole 28a without receiving resistance. The guiding means only needs to be able to regulate the relative rotation amount while guiding the relative rotation of the first rotating body and the second rotating body, and the configuration and arrangement thereof can be appropriately selected. For example, instead of the guide hole that penetrates the main body in the thickness direction, a guide groove that opens on one side in the axial direction of the main body may be formed, or a guide protrusion is formed on the main body side to form a side plate portion. A guide hole or a guide groove may be formed on the side. Further, a guide hole or a guide groove may be formed on the outer periphery of the main body portion to form a guide protrusion on the inner peripheral side of the tubular portion, or a guide protrusion may be formed on the outer circumference of the main body portion to form the tubular portion. A guide hole or a guide groove may be formed on the inner peripheral side of the. The number of guide means may be at least one pair, but from the viewpoint of operational stability, two or more pairs are preferable, and it is more preferable that the guide means are arranged at equal angular intervals.
また、本実施例では、各空間部１９を回転軸１２の軸方向と直交する方向に切断する断面は、図２（Ｂ）、図４に示すように、本体部１８の軸方向一側（ここでは左側）から軸方向他側（ここでは右側）に向かって縮小するように形成した。つまり、各空間部１９が本体部１８の軸方向一側から軸方向他側に向かって狭まるように周壁が傾斜している。これにより、各押圧部２３で各弾性変形部材２０が圧縮された際に、各弾性変形部材２０が回転軸１２の軸方向に移動（位置ずれ）することを防止し、各弾性変形部材２０を確実かつ効率的に圧縮することができる。また、この場合、本体部１８の軸方向他側が開口していても、各空間部１９に収容される各弾性変形部材２０が本体部１８の軸方向他側から落下（脱落）することがなく、本体部１８の構造を簡素化し、第１の回転体１６を軽量化することができる。 Further, in this embodiment, the cross section for cutting each space portion 19 in the direction orthogonal to the axial direction of the rotating shaft 12 is one side in the axial direction of the main body portion 18 (as shown in FIGS. 2B and 4). Here, it is formed so as to shrink from the left side) to the other side in the axial direction (here, the right side). That is, the peripheral wall is inclined so that each space portion 19 narrows from one side in the axial direction of the main body portion 18 toward the other side in the axial direction. As a result, when each elastically deforming member 20 is compressed by each pressing portion 23, each elastically deforming member 20 is prevented from moving (positional deviation) in the axial direction of the rotating shaft 12, and each elastically deforming member 20 is moved. It can be compressed reliably and efficiently. Further, in this case, even if the other side in the axial direction of the main body portion 18 is open, each elastic deforming member 20 housed in each space portion 19 does not fall (fall off) from the other side in the axial direction of the main body portion 18. The structure of the main body 18 can be simplified and the weight of the first rotating body 16 can be reduced.
但し、図５（Ａ）に示す第１の変形例の回転伝達機構１０ａのように、第２の回転体１７ａが、第１の回転体１６ａの軸方向他側で回転軸１２に回転可能に保持される外側板２９ａを有し、外側板２９ａが、各空間部１９を貫通する各押圧部２３ａにより側板部２２と連結されている構造とすることもできる。これにより、本体部１８ａを側板部２２と外側板２９ａの間に保持し、空間部１９への異物（ゴミ）や雨水等の侵入を防ぎ、弾性変形部材２０の劣化等を防止することができる。そして、空間部１９から弾性変形部材２０が脱落することも防止できる。
また、図５（Ｂ）に示す第２の変形例の回転伝達機構１０ｂのように、第１の回転体１６ｂに、本体部１８ｂの軸方向他側で各空間部１９を閉塞する閉塞部２９ｂを設けてもよい。閉塞部２９ｂを設けることにより、弾性変形部材２０の落下を防止できると共に、空間部１９への異物（ゴミ）や雨水等の侵入を防ぎ、弾性変形部材２０の劣化等を防止できる。ここでは、別部材で形成した板状の閉塞部２９ｂを本体部１８ｂに螺子止めして取付けたが、材質により、溶接又は接着で取付けてもよいし、本体部と閉塞部を一体に形成してもよい。また、ここでは、１つの閉塞部２９ｂで全ての空間部１９を閉塞したが、閉塞部は複数に分割することもできる。
なお、回転伝達機構１０及び回転伝達機構１０ａでは、側板部２２が回転軸１２に回転可能に保持される構造としたが、図５（Ｂ）に示した回転伝達機構１０ｂのように第２の回転体１７ｂの側板部２２が第１の回転体１６ｂに回転可能に保持される構造とすることもできる。ここで、閉塞部２９ｂの代りに、回転伝達機構１０ａと同様の外側板を設けることもできるが、その場合、側板部２２と同様に外側板が第１の回転体に回転可能に保持される構造とすることが好ましい。
以上説明した外側板又は閉塞部を設ける場合、各空間部の周壁は、本体部の軸方向一側から軸方向他側に向かってストレートに形成してもよい。 However, as in the rotation transmission mechanism 10a of the first modification shown in FIG. 5A, the second rotating body 17a can rotate to the rotating shaft 12 on the other side in the axial direction of the first rotating body 16a. It is also possible to have a structure in which the outer plate 29a is held, and the outer plate 29a is connected to the side plate portion 22 by each pressing portion 23a penetrating each space portion 19. As a result, the main body portion 18a can be held between the side plate portion 22 and the outer plate 29a, foreign matter (dust), rainwater, etc. can be prevented from entering the space portion 19, and deterioration of the elastically deformed member 20 can be prevented. .. Then, it is possible to prevent the elastically deforming member 20 from falling off from the space portion 19.
Further, as in the rotation transmission mechanism 10b of the second modification shown in FIG. 5B, the closing portion 29b that closes each space portion 19 to the first rotating body 16b on the other side in the axial direction of the main body portion 18b. May be provided. By providing the closing portion 29b, it is possible to prevent the elastically deforming member 20 from falling, prevent foreign matter (dust), rainwater, etc. from entering the space portion 19, and prevent deterioration of the elastically deforming member 20. Here, the plate-shaped closing portion 29b formed of a separate member is attached by screwing to the main body portion 18b, but depending on the material, it may be attached by welding or adhesive, or the main body portion and the closing portion are integrally formed. You may. Further, here, although all the space portions 19 are closed by one closed portion 29b, the closed portions can be divided into a plurality of parts.
The rotation transmission mechanism 10 and the rotation transmission mechanism 10a have a structure in which the side plate portion 22 is rotatably held by the rotation shaft 12, but the second rotation transmission mechanism 10b is shown in FIG. 5 (B). The side plate portion 22 of the rotating body 17b may be rotatably held by the first rotating body 16b. Here, instead of the closing portion 29b, an outer plate similar to the rotation transmission mechanism 10a can be provided, but in that case, the outer plate is rotatably held by the first rotating body like the side plate portion 22. It is preferable to have a structure.
When the outer plate or the closed portion described above is provided, the peripheral wall of each space portion may be formed straight from one side in the axial direction of the main body portion to the other side in the axial direction.
更に、図６（Ａ）、（Ｂ）に示す第３の変形例の回転伝達機構１０ｃのように、第２の回転体１７ｃの各押圧部２３ｂの先側（他側）に、第１の回転体１６ｃの軸方向他側で各空間部１９の一部を覆うカバー部２９ｃを設けてもよい。カバー部２９ｃで押圧部２３ｂを保護できると共に、本体部１８ｃを側板部２２とカバー部２９ｃで挟むようにして保持し、第２の回転体１７ｃが回転軸１２から脱落することを防止できる。カバー部２９ｃは、押圧部２３ｂを空間部１９に挿通した後から、押圧部２３ｂに螺子止め、溶接又は接着等で固定することができる。なお、カバー部が一体に形成された押圧部又は予めカバー部が取付けられた押圧部を空間部に挿通し、側板部に固定することもできる。ここでは、カバー部２９ｃを円形に形成したが、カバー部の形状はこれに限定されるものではなく、適宜、選択することができ、空間部全体を覆ってもよい。カバー部で空間部全体を覆った場合、弾性変形部材を保護して空間部からの脱落を防止することができると共に、圧縮された弾性変形部材が空間部の外側に膨らむことを防ぎ、空間部の内部で確実に弾性変形部材を圧縮することができる。 Further, as in the rotation transmission mechanism 10c of the third modification shown in FIGS. 6 (A) and 6 (B), the first side (other side) of each pressing portion 23b of the second rotating body 17c A cover portion 29c that covers a part of each space portion 19 may be provided on the other side of the rotating body 16c in the axial direction. The pressing portion 23b can be protected by the cover portion 29c, and the main body portion 18c can be held so as to be sandwiched between the side plate portion 22 and the cover portion 29c to prevent the second rotating body 17c from falling off from the rotating shaft 12. The cover portion 29c can be fixed to the pressing portion 23b by screwing, welding, adhesion, or the like after the pressing portion 23b is inserted into the space portion 19. It is also possible to insert the pressing portion in which the cover portion is integrally formed or the pressing portion to which the cover portion is attached in advance into the space portion and fix it to the side plate portion. Here, the cover portion 29c is formed in a circular shape, but the shape of the cover portion is not limited to this, and can be appropriately selected and may cover the entire space portion. When the entire space is covered with the cover, the elastically deformable member can be protected to prevent the elastically deformed member from falling off from the space, and the compressed elastically deformable member can be prevented from bulging to the outside of the space to prevent the elastically deformed member from bulging to the outside of the space. The elastically deformable member can be reliably compressed inside the space.
また、図７（Ａ）、（Ｂ）に示す第４の変形例の回転伝達機構１０ｄのように、第２の回転体１７ｄの各押圧部２３ｃが、各弾性変形部材２０に向かって拡開した窪み部２６ａを有し、初期状態で窪み部２６ａの開口側の周縁で各弾性変形部材２０と接触するようにしてもよい。これにより、本体部１８ｄの各空間部１９が弾性変形部材２０と押圧部２３ｃによってほぼ埋められた状態となり、第１の回転体１６ｄと第２の回転体１７ｄとのがたつきを防止して、スムーズな回転動作を行うことが可能となる。また、第１の回転体１６ｄと第２の回転体１７ｄが相対回転する間に、各弾性変形部材２０が各窪み部２６ａの中に入り込むことにより、初動時の負荷を軽減することができる。そして、第１の回転体１６ｄと第２の回転体１７ｄが相対回転を始めてから、各弾性変形部材２０が各窪み部２６ａの底部に接触して各押圧部２３ｃで圧縮され始めるまでの間に、勢いを付けて各弾性変形部材２０を圧縮することができ、各弾性変形部材２０に蓄積されるエネルギーを高めることがきできる。窪み部の形状及び大きさは適宜、選択することができるが、窪み部が弾性変形部材（開口側）に向かって拡開していることにより、窪み部の開口側の周縁が傾斜面となって弾性変形部材の窪み部への出入りをスムーズに案内することができ、弾性変形部材の耐久性を向上させることができる。
なお、回転伝達機構１０ａ、１０ｂ、１０ｃ、１０ｄのいずれにも回転伝達機構１０と同様に案内手段を設けることができる。
また、本実施例では、第１の回転体が本体部（空間部及び弾性変形部材を含む）を有し、第２の回転体が側板部（押圧部を含む）を有する構造としたが、第１の回転体が側板部を有し、第２の回転体が本体部を有する構造としてもよい。 Further, as in the rotation transmission mechanism 10d of the fourth modified example shown in FIGS. 7 (A) and 7 (B), each pressing portion 23c of the second rotating body 17d expands toward each elastic deforming member 20. It may have the recessed portion 26a and come into contact with each elastically deforming member 20 at the peripheral edge of the recessed portion 26a on the opening side in the initial state. As a result, each space 19 of the main body 18d is substantially filled with the elastically deforming member 20 and the pressing portion 23c, and rattling between the first rotating body 16d and the second rotating body 17d is prevented. , It becomes possible to perform a smooth rotation operation. Further, while the first rotating body 16d and the second rotating body 17d rotate relative to each other, each elastic deforming member 20 enters each recess 26a, so that the load at the time of initial movement can be reduced. Then, between the time when the first rotating body 16d and the second rotating body 17d start relative rotation until each elastically deforming member 20 comes into contact with the bottom of each recessed portion 26a and begins to be compressed by each pressing portion 23c. Each elastically deforming member 20 can be compressed with momentum, and the energy stored in each elastically deforming member 20 can be increased. The shape and size of the recessed portion can be appropriately selected, but since the recessed portion expands toward the elastically deforming member (opening side), the peripheral edge of the recessed portion on the opening side becomes an inclined surface. The elastically deformable member can be smoothly guided in and out of the recessed portion, and the durability of the elastically deformable member can be improved.
As with the rotation transmission mechanism 10, the rotation transmission mechanism 10a, 10b, 10c, and 10d can be provided with the guiding means.
Further, in the present embodiment, the structure is such that the first rotating body has a main body portion (including a space portion and an elastic deforming member) and the second rotating body has a side plate portion (including a pressing portion). The structure may be such that the first rotating body has a side plate portion and the second rotating body has a main body portion.
以上のように構成された回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）を搭載した自転車の運転者は、急発進時、急加速時、又は登坂時等において、膝や足首等への負担を著しく低減することができ、坂道や抵抗の大きな道でも楽に走行することができる。また。低速運転時でもふらつきが発生し難く、重い荷物や子供等を乗せた場合でも安定した走行を行なうことができるので、高齢者又は女性でも安全かつ快適に自転車を使用することができる。更に、回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）は、良好な加速性及び回転トルクの均一性を利用して、競技用やリハビリ用等の自転車にも適用することができる。なお、弾性変形部材２０の弾性率は、回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）の用途に応じて、適宜、選択することができる。特に、回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）を自転車に適用（搭載）する場合は、自転車の用途（一般用、競技用、リハビリ用、子供用等）又は使用者の年齢若しくは体力等に応じて選択することが好ましい。また、この回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）は、自転車以外の例えば、土木用一輪車、リヤカー等の車両のほか、草刈り機、ドリル等の様々な回転駆動部の回転軸に対しても適用可能である。 A bicycle driver equipped with the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) configured as described above puts a burden on the knees, ankles, etc. at the time of sudden start, sudden acceleration, climbing, etc. Can be significantly reduced, and it is possible to drive easily even on slopes and roads with large resistance. Also. Since wobbling is unlikely to occur even during low-speed driving and stable driving can be performed even when heavy luggage or children are carried, even elderly people or women can use the bicycle safely and comfortably. Further, the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) can be applied to bicycles for competition, rehabilitation, etc. by utilizing good acceleration and uniformity of rotation torque. The elastic modulus of the elastically deforming member 20 can be appropriately selected according to the application of the rotation transmission mechanism 10 (10a, 10b, 10c, 10d). In particular, when the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) is applied (mounted) to a bicycle, the purpose of the bicycle (general use, competition use, rehabilitation use, children's use, etc.) or the age or physical strength of the user It is preferable to select according to the above. Further, the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) is used for vehicles other than bicycles, such as unicycles for civil engineering and rear cars, as well as rotation axes of various rotation drive units such as mowers and drills. Is also applicable.
更に、回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）はモーターや発電機のローターに組込むこともできる。その場合、第２の回転体１７（１７ａ、１７ｂ、１７ｃ、１７ｄ）の外周にコイル又は永久磁石を取付け、更にその外周に隙間を空けてステーターとなる永久磁石又はコイルを配置すればよい。通常のモーターや発電機では、ローター全体が一体となって回転するが、ローターに回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）を組込むことにより、モーターの場合は、始動時に第２の回転体のみが回転した後、弾性変形部材が圧縮されて第１、第２の回転体が一体となって回転して回転軸から出力し、発電機の場合は、始動時に回転軸と共に第１の回転体のみが回転した後、弾性変形部材が圧縮されて第１、第２の回転体が一体となって回転する。従って、いずれの場合も、始動時の負荷を低減することができる。そして、モーターでは駆動電流の変動等により第２の回転体の回転に変動が発生した場合に、その変動を弾性変形部材で吸収（調整）して回転軸の回転を安定させ（変動を抑制又は低減し）、回転軸に連結された負荷を安定的に回転させることができる。また、発電機では、駆動源の動力の変動等により、回転軸の回転に変動が発生した場合に、その変動を弾性変形部材で吸収（調整）して第２の回転体の回転を安定させ（変動を抑制又は低減し）、安定的に発電を行うことができる。なお、モーターの回転方向が一方向のみの場合は、回転伝達機構１０（１０ａ、１０ｂ、１０ｃ、１０ｄ）をそのまま用いることができるが、正転と逆転の切り替えを行うモーターでは、各空間部の円周方向の一側及び他側にそれぞれ弾性変形部材が収容された回転伝達機構を用いる必要がある。 Further, the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) can be incorporated into the rotor of the motor or the generator. In that case, a coil or a permanent magnet may be attached to the outer periphery of the second rotating body 17 (17a, 17b, 17c, 17d), and a permanent magnet or a coil to be a stator may be arranged on the outer periphery thereof with a gap. In a normal motor or generator, the entire rotor rotates as one, but by incorporating the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) into the rotor, in the case of a motor, the second rotation at the time of starting. After only the body rotates, the elastically deforming member is compressed, and the first and second rotating bodies rotate together and output from the rotating shaft. In the case of a generator, the first rotating shaft and the first rotating shaft are used at the time of starting. After only the rotating body rotates, the elastically deforming member is compressed and the first and second rotating bodies rotate together. Therefore, in either case, the load at the time of starting can be reduced. Then, in the motor, when the rotation of the second rotating body fluctuates due to the fluctuation of the drive current or the like, the fluctuation is absorbed (adjusted) by the elastic deformation member to stabilize the rotation of the rotating shaft (suppress the fluctuation or suppress the fluctuation). (Reduced), the load connected to the rotating shaft can be rotated stably. Further, in the generator, when the rotation of the rotating shaft fluctuates due to the fluctuation of the power of the drive source, the fluctuation is absorbed (adjusted) by the elastic deformation member to stabilize the rotation of the second rotating body. (Suppresses or reduces fluctuations) and can generate electricity in a stable manner. When the rotation direction of the motor is only one direction, the rotation transmission mechanism 10 (10a, 10b, 10c, 10d) can be used as it is, but in the motor that switches between forward rotation and reverse rotation, each space portion It is necessary to use a rotation transmission mechanism in which elastically deforming members are housed on one side and the other side in the circumferential direction.
次に、図８（Ａ）、（Ｂ）を参照して本発明の第２の実施例に係る回転伝達機構３０を用いたモーター３１について説明する。なお、第１の実施例と同様のものは同じ符号を付して説明を省略する。
図８（Ａ）、（Ｂ）に示すように、回転伝達機構３０では、回転軸１２と共に回転する第１の回転体３２が、回転軸１２の外周に保持される側板部３３と、側板部３３の軸方向一側（ここでは左側）に突出する複数（ここでは２つ）の押圧部３４を有している。また、第１の回転体３２の軸方向一側に配置された第２の回転体３５が、ベアリング２１を介して回転軸１２に回転可能に保持される本体部３６を有している。この本体部３６には、回転軸１２の軸心を中心として回転軸１２の外周に同心円状に湾曲し、本体部３６を厚さ方向に貫通して、本体部３６の軸方向他側（ここでは右側）から各押圧部３４が挿入される複数（ここでは２つ）の円弧状の空間部３７が形成されている。そして、各空間部３７の円周方向の一側及び他側にそれぞれ弾性変形部材２０ａ、２０ｂが収容されている。初期状態では図８（Ａ）に示すように、各空間部３７の押圧部３４と弾性変形部材２０ａ、２０ｂとの間にはそれぞれ助走区間３７ａ、３７ｂがある。なお、弾性変形部材２０ａ、２０ｂは本体部３６の厚さに合わせて円柱状に形成することが好ましいが、その形状は、これに限定されるものではない。 Next, the motor 31 using the rotation transmission mechanism 30 according to the second embodiment of the present invention will be described with reference to FIGS. 8A and 8B. The same reference numerals as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
As shown in FIGS. 8A and 8B, in the rotation transmission mechanism 30, the first rotating body 32 that rotates together with the rotating shaft 12 is held on the outer periphery of the rotating shaft 12, and the side plate portion 33 and the side plate portion. It has a plurality of (here, two) pressing portions 34 projecting on one side (here, the left side) in the axial direction of 33. Further, the second rotating body 35 arranged on one side in the axial direction of the first rotating body 32 has a main body portion 36 rotatably held by the rotating shaft 12 via a bearing 21. The main body 36 is concentrically curved around the outer circumference of the rotating shaft 12 around the axial center of the rotating shaft 12, penetrates the main body 36 in the thickness direction, and is on the other side in the axial direction of the main body 36 (here). From the right side), a plurality of (here, two) arc-shaped space portions 37 into which the pressing portions 34 are inserted are formed. The elastically deforming members 20a and 20b are housed on one side and the other side in the circumferential direction of each space portion 37, respectively. In the initial state, as shown in FIG. 8A, there are approach sections 37a and 37b between the pressing portion 34 of each space portion 37 and the elastically deforming members 20a and 20b, respectively. The elastically deforming members 20a and 20b are preferably formed in a columnar shape according to the thickness of the main body 36, but the shape thereof is not limited to this.
本実施例では各空間部３７の周壁は、本体部３６の軸方向一側から軸方向他側に向かってストレートに形成したが、各空間部を回転軸の軸方向と直交する方向に切断する断面が、本体部の軸方向一側（ここでは左側）から軸方向他側（ここでは右側）に向かって拡大するように形成してもよい。つまり、各空間部が本体部の軸方向一側から軸方向他側に向かって拡がるように周壁を傾斜させることにより、押圧部を空間部に挿通し易くなる。また、押圧部で弾性変形部材が圧縮された際に、弾性変形部材が回転軸の軸方向に移動（位置ずれ）することを防止し、弾性変形部材を確実かつ効率的に圧縮することができる。なお、図８（Ｂ）に仮想線で示したように、第１の回転体３２が、第２の回転体３５の軸方向一側で回転軸１２の外周に保持される外側板３８を有し、外側板３８が、各空間部３７を貫通する各押圧部３４により側板部３３と連結されている構造としてもよい。側板部又は外側板は、回転軸と一体に形成することもできる。また、第２の回転体の本体部の軸方向一側で各空間部を閉塞する閉塞部を本体部と一体に形成してもよいし、本体部に取付けてもよい。更に、第１の回転体に、各押圧部の先側に設けられ、第２の回転体の軸方向一側で各空間部を覆うカバー部を設けてもよい。 In this embodiment, the peripheral wall of each space portion 37 is formed straight from one side in the axial direction of the main body portion 36 toward the other side in the axial direction, but each space portion is cut in a direction orthogonal to the axial direction of the rotation axis. The cross section may be formed so as to expand from one side in the axial direction (here, the left side) of the main body to the other side in the axial direction (here, the right side). That is, by inclining the peripheral wall so that each space portion expands from one side in the axial direction of the main body portion toward the other side in the axial direction, the pressing portion can be easily inserted into the space portion. Further, when the elastically deformed member is compressed by the pressing portion, it is possible to prevent the elastically deformed member from moving (shifting) in the axial direction of the rotation axis, and the elastically deformed member can be compressed reliably and efficiently. .. As shown by a virtual line in FIG. 8B, the first rotating body 32 has an outer plate 38 held on the outer circumference of the rotating shaft 12 on one side in the axial direction of the second rotating body 35. However, the outer plate 38 may be connected to the side plate portion 33 by each pressing portion 34 penetrating each space portion 37. The side plate portion or the outer plate portion can also be formed integrally with the rotating shaft. Further, a closed portion that closes each space portion on one side in the axial direction of the main body portion of the second rotating body may be formed integrally with the main body portion, or may be attached to the main body portion. Further, the first rotating body may be provided with a cover portion provided on the front side of each pressing portion and covering each space portion on one side in the axial direction of the second rotating body.
以上のように構成された回転伝達機構３０を備えたローター３９は、モーター３１のケーシング４０の内部に収容され、回転軸１２の一側がケーシング４０の外に突出している。ここで、回転軸１２はケーシング４０の両側の側壁４１にそれぞれ取付けられたベアリング４２により回転可能に保持されている。また、ローター３９は、回転伝達機構３０の第２の回転体３５（本体部３６）の外周に設けられた３つのコイル部４３を有している。そして、ケーシング４０の外周壁４４の内側にはコイル部４３と隙間を空けて、ステーターとなる２つの永久磁石４５が取付けられている。各コイル部４３と電気的に接続された整流子４６は円周方向に３分割されて互いに絶縁されており、本体部３６の軸方向一側に設けられた円筒状の支持部材４７に固定され、第２の回転体３５及び各コイル部４３と共に回転可能となっている。また、先側が整流子４６の外周面に当接するように２つのブラシ４８が対向して設けられ、各ブラシ４８の基側には通電用のリード線４９が接続されている。 The rotor 39 provided with the rotation transmission mechanism 30 configured as described above is housed inside the casing 40 of the motor 31, and one side of the rotation shaft 12 projects outside the casing 40. Here, the rotating shaft 12 is rotatably held by bearings 42 attached to the side walls 41 on both sides of the casing 40. Further, the rotor 39 has three coil portions 43 provided on the outer periphery of the second rotating body 35 (main body portion 36) of the rotation transmission mechanism 30. Two permanent magnets 45, which serve as stators, are attached to the inside of the outer peripheral wall 44 of the casing 40 with a gap from the coil portion 43. The commutator 46 electrically connected to each coil portion 43 is divided into three parts in the circumferential direction and insulated from each other, and is fixed to a cylindrical support member 47 provided on one side in the axial direction of the main body portion 36. , It is rotatable together with the second rotating body 35 and each coil portion 43. Further, two brushes 48 are provided so as to face each other so that the front side abuts on the outer peripheral surface of the commutator 46, and a lead wire 49 for energization is connected to the base side of each brush 48.
以上の構成により、リード線４９を電源（乾電池等）に接続して通電すると、まずコイル部４３が設けられた第２の回転体３５が回転（正転又は逆転）する。第２の回転体３５（本体部３６）の回転により、各空間部３７に収容された一方の弾性変形部材２０ａ（又は２０ｂ）と静止状態の各押圧部３４が接近し、各空間部３７の周壁と各押圧部３４との間で各弾性変形部材２０ａ（又は２０ｂ）が圧縮される。最初は各弾性変形部材２０ａ（又は２０ｂ）が弾性変形するが、所定量変形した後は、第２の回転体３５の回転力（入力エネルギー）が各弾性変形部材２０ａ（又は２０ｂ）を介して各押圧部３４（第１の回転体３２）に伝達され、第１の回転体３２と第２の回転体３５が略一体となって回転する。これにより、第２の回転体３５から入力される回転エネルギーを第１の回転体３２に伝達して回転軸１２から出力することができる。 With the above configuration, when the lead wire 49 is connected to a power source (dry cell or the like) and energized, the second rotating body 35 provided with the coil portion 43 first rotates (forward or reverse). Due to the rotation of the second rotating body 35 (main body 36), one elastically deforming member 20a (or 20b) housed in each space 37 and each stationary pressing portion 34 approach each other, and the space 37 Each elastic deformation member 20a (or 20b) is compressed between the peripheral wall and each pressing portion 34. Initially, each elastically deforming member 20a (or 20b) is elastically deformed, but after being deformed by a predetermined amount, the rotational force (input energy) of the second rotating body 35 passes through each elastically deforming member 20a (or 20b). It is transmitted to each pressing portion 34 (first rotating body 32), and the first rotating body 32 and the second rotating body 35 rotate substantially integrally. As a result, the rotational energy input from the second rotating body 35 can be transmitted to the first rotating body 32 and output from the rotating shaft 12.
特に、この回転伝達機構３０では、空間部３７が略半円弧状に形成されており、第２の回転体３５が回転を始めてから弾性変形部材２０ａ（又は２０ｂ）と押圧部３４が接触するまでの助走区間３７ａ（３７ｂ）が長く、第１の回転体３２と第２の回転体３５がローター３９として一体的に回転し始めるまでは、第２の回転体３５（コイル部４３を含む）のみが回転するので、始動時の負荷を極めて小さくする（ほぼ無負荷状態とする）ことができる。また、モーター３１を駆動する電流の変動等により第２の回転体３５の回転に変動が発生した場合に、その変動を弾性変形部材２０ａ（又は２０ｂ）で吸収（調整）することができる。つまり、第２の回転体３５の回転が遅くなった時（弾性変形部材２０ａ（又は２０ｂ）を圧縮する力が小さくなった時）に、弾性変形部材２０ａ（又は２０ｂ）が膨張し、弾性変形部材２０ａ（又は２０ｂ）に蓄えられていたエネルギーが第１の回転体３２に加わることにより、入力エネルギーを有効利用して回転軸１２の回転が遅くなることを防ぎ、回転軸１２を安定的に回転させることができる。なお、各押圧部の各弾性変形部材との接触位置に、押圧部２３と同様の突起部を形成してもよいし、押圧部２３ｃと同様の窪み部を形成してもよい。 In particular, in this rotation transmission mechanism 30, the space portion 37 is formed in a substantially semi-arc shape, and from the start of rotation of the second rotating body 35 until the elastic deformation member 20a (or 20b) comes into contact with the pressing portion 34. The approach section 37a (37b) is long, and only the second rotating body 35 (including the coil portion 43) is used until the first rotating body 32 and the second rotating body 35 start to rotate integrally as the rotor 39. Since the body rotates, the load at the time of starting can be made extremely small (almost no load state). Further, when the rotation of the second rotating body 35 fluctuates due to the fluctuation of the current for driving the motor 31, the elastic deformation member 20a (or 20b) can absorb (adjust) the fluctuation. That is, when the rotation of the second rotating body 35 becomes slow (when the force for compressing the elastic deforming member 20a (or 20b) becomes small), the elastic deforming member 20a (or 20b) expands and elastically deforms. By applying the energy stored in the member 20a (or 20b) to the first rotating body 32, the input energy is effectively used to prevent the rotation of the rotating shaft 12 from being slowed down, and the rotating shaft 12 is stabilized. Can be rotated. In addition, a protrusion similar to the pressing portion 23 may be formed at a contact position of each pressing portion with each elastically deforming member, or a recessed portion similar to the pressing portion 23c may be formed.
なお、本実施例では、第２の回転体３５は、本体部３６が、ベアリング２１を介して回転軸１２に回転可能に保持されているが、第２の回転体の構造は適宜、選択することができ、例えば、本体部の軸方向一側及び他側にそれぞれ連結され、回転軸に回転可能に保持される本体保持部を設けてもよいし、必ずしもベアリングを用いなくてもよい。また、第２の回転体は、回転軸ではなく、第１の回転体に回転可能に保持されていてもよい。例えば、第１の回転体を構成する側板部に、回転軸に固定される筒状の装着部を形成し、第２の回転体（本体部）が、装着部に回転可能に保持される構造とすることもできる。更に、回転伝達機構１０と同様に、案内手段を設けることもできる。 In this embodiment, the main body 36 of the second rotating body 35 is rotatably held by the rotating shaft 12 via the bearing 21, but the structure of the second rotating body is appropriately selected. For example, a main body holding portion that is connected to one side and the other side in the axial direction of the main body portion and is rotatably held on the rotating shaft may be provided, or a bearing may not necessarily be used. Further, the second rotating body may be rotatably held by the first rotating body instead of the rotating shaft. For example, a structure in which a tubular mounting portion fixed to a rotating shaft is formed on a side plate portion constituting the first rotating body, and the second rotating body (main body portion) is rotatably held by the mounting portion. It can also be. Further, like the rotation transmission mechanism 10, a guide means can be provided.
また、回転伝達機構３０を用いたモーターの構造は、本実施例に限定されるものではなく、各種モーターのローターに対して、この回転伝達機構３０を組込むことができる。例えば、本実施例では、第２の回転体の外周にコイル部を設けてローターとし、その外周に間隔を空けてステーターとなる永久磁石を配置したが、第２の回転体の外周に複数の永久磁石を取付けてローターとし、その外周に間隔を空けてステーターとなるコイルを配置してもよい。また、この回転伝達機構３０は、発電機のローターに組込むこともできる。 Further, the structure of the motor using the rotation transmission mechanism 30 is not limited to this embodiment, and the rotation transmission mechanism 30 can be incorporated into the rotors of various motors. For example, in the present embodiment, a coil portion is provided on the outer periphery of the second rotating body to form a rotor, and permanent magnets serving as stators are arranged on the outer periphery thereof at intervals, but a plurality of permanent magnets are arranged on the outer periphery of the second rotating body. A permanent magnet may be attached to form a rotor, and coils to be a stator may be arranged at intervals on the outer circumference thereof. Further, the rotation transmission mechanism 30 can also be incorporated in the rotor of the generator.
次に、図９～図１３を参照して本発明の第３の実施例に係る回転伝達機構５０について説明する。なお、第１、第２の実施例と同様のものは同じ符号を付して説明を省略する。
図９は回転伝達機構５０を車椅子の回転軸１２に組み込んだ状態を示している。回転軸１２は車椅子のフレーム５１に回転可能に保持され、回転軸１２の先側には回転軸１２を正逆回転させるためのハンドリム５２が連結されている。そして、第２の回転体１７ｅには、筒状部２７の外周に放射状に取付けられたスポーク５３を介して車輪５４が固定されている。 Next, the rotation transmission mechanism 50 according to the third embodiment of the present invention will be described with reference to FIGS. 9 to 13. The same components as those in the first and second embodiments are designated by the same reference numerals, and the description thereof will be omitted.
FIG. 9 shows a state in which the rotation transmission mechanism 50 is incorporated in the rotation shaft 12 of the wheelchair. The rotating shaft 12 is rotatably held by the frame 51 of the wheelchair, and a hand rim 52 for rotating the rotating shaft 12 in the forward and reverse directions is connected to the front side of the rotating shaft 12. The wheels 54 are fixed to the second rotating body 17e via spokes 53 radially attached to the outer periphery of the tubular portion 27.
回転伝達機構５０では、図１０～図１３に示すように、第１の回転体５５の本体部５６の外周に側面視して半円状の複数（ここでは６個）の凸部５７が設けられている。本体部５６に形成される各空間部１９の円周方向の一側及び他側には、弾性変形部材２０ａ、２０ｂがそれぞれ収容され、第１の回転体５５の軸方向一側から各空間部１９に挿入された押圧部５８と弾性変形部材２０ａ、２０ｂとの間にはそれぞれ助走区間２４ａ、２４ｂがある。また、本実施例では、第２の回転体１７ｅの各押圧部５８は円柱状に形成されており、突起部を有していないが、突起部を設けることも可能である。そして、第１の回転体５５（本体部５６）の外周と、第２の回転体１７ｅの筒状部２７との間に、凸部５７を押圧して第１の回転体５５（本体部５６）の回転にブレーキをかけるブレーキ機構５９が取付けられている。このブレーキ機構５９は、本体部５６の外周に沿うように略半円弧状に湾曲して形成された一対の可動片６０を有している。各可動片６０の基側はフレーム５１に固定された２本の支持軸６１（図９）でそれぞれ回動可能に保持されている。また、各可動片６０の先側同士は、図１０、図１２、図１３に示すように、圧縮コイルバネ（付勢手段の一種）６３で連結されている。これにより、各可動片６０は、常に圧縮コイルバネ６３で回転軸１２の軸心側に付勢され、各可動片６０の内周面側を本体部５６の外周面（凸部５７）に当接させて本体部５６の回転にブレーキをかけることができる。このとき、各可動片６０の内周面には、凸部５７の円周方向ピッチに合わせて複数（ここでは２個ずつ）の凹部６２が形成されている。そして、凹部６２は緩やかな円弧状に（凸部５７の曲率半径より大きな曲率半径で）湾曲している。可動片６０の材質としては合成ゴムが好適に用いられるが、耐久性を考慮して支持軸６１の外周部は金属製とすることが好ましい。或いは、可動片として金属製の基材の内周面側（本体部５６の凸部５７が接触する領域）に合成ゴムを貼り付けたものを用いてもよい。 In the rotation transmission mechanism 50, as shown in FIGS. 10 to 13, a plurality of semicircular (here, 6) convex portions 57 are provided on the outer periphery of the main body 56 of the first rotating body 55 when viewed from the side. Has been done. Elastically deforming members 20a and 20b are housed on one side and the other side of each space portion 19 formed in the main body portion 56 in the circumferential direction, and each space portion is accommodated from one side in the axial direction of the first rotating body 55. There are approach sections 24a and 24b between the pressing portion 58 inserted in 19 and the elastically deforming members 20a and 20b, respectively. Further, in this embodiment, each pressing portion 58 of the second rotating body 17e is formed in a columnar shape and does not have a protrusion, but it is also possible to provide a protrusion. Then, the convex portion 57 is pressed between the outer circumference of the first rotating body 55 (main body portion 56) and the tubular portion 27 of the second rotating body 17e to press the convex portion 57 to form the first rotating body 55 (main body portion 56). A brake mechanism 59 that applies a brake to the rotation of) is attached. The brake mechanism 59 has a pair of movable pieces 60 formed by being curved in a substantially semicircular shape along the outer circumference of the main body 56. The base side of each movable piece 60 is rotatably held by two support shafts 61 (FIG. 9) fixed to the frame 51. Further, as shown in FIGS. 10, 12, and 13, the front sides of the movable pieces 60 are connected to each other by a compression coil spring (a type of urging means) 63. As a result, each movable piece 60 is always urged toward the axial center side of the rotating shaft 12 by the compression coil spring 63, and the inner peripheral surface side of each movable piece 60 abuts on the outer peripheral surface (convex portion 57) of the main body 56. The rotation of the main body 56 can be braked. At this time, a plurality of (here, two) recesses 62 are formed on the inner peripheral surface of each movable piece 60 in accordance with the circumferential pitch of the convex portions 57. The concave portion 62 is curved in a gentle arc shape (with a radius of curvature larger than the radius of curvature of the convex portion 57). Synthetic rubber is preferably used as the material of the movable piece 60, but the outer peripheral portion of the support shaft 61 is preferably made of metal in consideration of durability. Alternatively, as the movable piece, a metal base material having synthetic rubber attached to the inner peripheral surface side (the region where the convex portion 57 of the main body 56 contacts) may be used.
以下、回転伝達機構５０を搭載した車椅子の動作について詳細に説明する。
まず、車椅子に乗った使用者が自分でハンドリム５２を操作して車椅子を前進させる場合（第１の動作）について説明する。
図１０の状態から、使用者がハンドリム５２を車椅子の前進方向に回転（正転）させると、ハンドリム５２に連結された回転軸１２と共に第１の回転体５５（本体部５６）が回転を始める。このとき、本体部５６の凸部５７が各可動片６０の凹部６２の内部からスムーズに移動し、図１２に示すように各可動片６０を回転軸１２の半径方向外側に向かって回動させることができる。そして、第１の回転体５５の回転により、各空間部１９に収容された各弾性変形部材２０ａと静止状態の各押圧部５８が接近し、各空間部１９の周壁と各押圧部５８との間で各弾性変形部材２０ａが圧縮される。最初は各弾性変形部材２０ａが弾性変形するが、所定量変形した後は、ハンドリム５２から与えられる回転軸１２（第１の回転体５５）の回転力（入力エネルギー）が各弾性変形部材２０ａを介して各押圧部５８に伝達され、第１の回転体５５と第２の回転体１７ｅが略一体となって回転する。このとき、第２の回転体１７ｅに取付けられた車輪５４も一緒に回転することにより、車椅子が走行を開始する。 Hereinafter, the operation of the wheelchair equipped with the rotation transmission mechanism 50 will be described in detail.
First, a case where a user in a wheelchair operates the hand rim 52 by himself / herself to advance the wheelchair (first operation) will be described.
When the user rotates the hand rim 52 in the forward direction (forward rotation) of the wheelchair from the state of FIG. 10, the first rotating body 55 (main body 56) starts to rotate together with the rotating shaft 12 connected to the hand rim 52. .. At this time, the convex portion 57 of the main body portion 56 smoothly moves from the inside of the concave portion 62 of each movable piece 60, and each movable piece 60 is rotated outward in the radial direction of the rotating shaft 12 as shown in FIG. be able to. Then, due to the rotation of the first rotating body 55, each elastically deforming member 20a housed in each space portion 19 and each pressing portion 58 in a stationary state approach each other, and the peripheral wall of each space portion 19 and each pressing portion 58 come into contact with each other. Each elastic deformation member 20a is compressed between them. Initially, each elastically deforming member 20a is elastically deformed, but after being deformed by a predetermined amount, the rotational force (input energy) of the rotating shaft 12 (first rotating body 55) given from the hand rim 52 causes each elastically deforming member 20a to be elastically deformed. The first rotating body 55 and the second rotating body 17e rotate substantially as one, which is transmitted to each pressing portion 58 via the pressing portion 58. At this time, the wheels 54 attached to the second rotating body 17e also rotate together, so that the wheelchair starts running.
次に、介助者が車椅子を押して車椅子を前進させる場合（第２の動作）について説明する。
図１０の状態から、介助者が車椅子を前進方向に押すと、車輪５４と共に第２の回転体１７ｅが回転を始める。そして、第２の回転体１７ｅの回転により、各空間部１９に収容された静止状態の各弾性変形部材２０ｂと各押圧部５８が接近し、図１３に示すように各空間部１９の周壁と各押圧部５８との間で各弾性変形部材２０ｂが圧縮される。この間、介助者は比較的小さな力で車椅子を移動させることができる。そして、更に車椅子を押し続け、各弾性変形部材２０ｂが変形しなくなると、第２の回転体１７ｅの回転力（入力エネルギー）が各弾性変形部材２０ｂを介して本体部５６（第１の回転体５５）に伝達され、第２の回転体１７ｅと第１の回転体５５とが略一体となって回転し始める。第１の回転体５５が回転を始めると、本体部５６の凸部５７が各可動片６０の凹部６２の内部からスムーズに移動し、図１２と同様にして各可動片６０を回転軸１２の半径方向外側に向かって回動させることができる。 Next, a case where the caregiver pushes the wheelchair to advance the wheelchair (second operation) will be described.
From the state of FIG. 10, when the caregiver pushes the wheelchair in the forward direction, the second rotating body 17e starts to rotate together with the wheels 54. Then, due to the rotation of the second rotating body 17e, the elastically deforming members 20b in the stationary state housed in each space portion 19 and each pressing portion 58 approach each other, and as shown in FIG. 13, the peripheral wall of each space portion 19 and the peripheral wall. Each elastic deformation member 20b is compressed with each pressing portion 58. During this time, the caregiver can move the wheelchair with a relatively small force. Then, when the wheelchair is further pushed and the elastically deforming members 20b are no longer deformed, the rotational force (input energy) of the second rotating body 17e is applied to the main body 56 (first rotating body) via the elastically deforming members 20b. It is transmitted to 55), and the second rotating body 17e and the first rotating body 55 start to rotate substantially integrally. When the first rotating body 55 starts to rotate, the convex portion 57 of the main body portion 56 smoothly moves from the inside of the concave portion 62 of each movable piece 60, and each movable piece 60 is moved to the rotating shaft 12 in the same manner as in FIG. It can be rotated outward in the radial direction.
上記のいずれの動作においても、ブレーキ機構５９により第１の回転体５５に常にブレーキ（負荷）がかかっているので、車椅子が不意に移動したり、坂道を下ったりすることがなく、安全性に優れる。また、初動時の負荷を低減することができ、坂道や抵抗の大きな道でも楽に移動することができる。
なお、上記では、いずれも車椅子を前進させる場合の動作について説明したが、車椅子を後進させる場合の動作は、回転軸１２及び回転伝達機構５０の各部の回転方向が逆転するだけなので、説明を省略する。
ブレーキ機構は、第１の回転体５５の回転にブレーキ（負荷）をかけることができればよく、その構造は本実施例に限定されず、適宜、選択することができる。また、凸部及び凹部の形状、数、及び配置等も本実施例に限定されるものではなく、可動片の形状及び配置等に応じて、適宜、選択することができる。 In any of the above operations, the brake mechanism 59 constantly applies the brake (load) to the first rotating body 55, so that the wheelchair does not move unexpectedly or go down a slope for safety. Excellent. In addition, the load at the time of initial movement can be reduced, and it is possible to move easily even on a slope or a road with a large resistance.
In the above, the operation when the wheelchair is moved forward has been described, but the operation when the wheelchair is moved backward is omitted because the rotation direction of each part of the rotation shaft 12 and the rotation transmission mechanism 50 is reversed. To do.
The brake mechanism only needs to be able to apply a brake (load) to the rotation of the first rotating body 55, and its structure is not limited to this embodiment and can be appropriately selected. Further, the shapes, numbers, arrangements, etc. of the convex portions and the concave portions are not limited to this embodiment, and can be appropriately selected depending on the shape, arrangement, etc. of the movable pieces.
この回転伝達機構（ブレーキ機構を除く）５０は、正逆回転を行う各種の回転軸に好適に適用することができる。なお、本実施例では、第１の回転体５５が、回転軸装着部６４を介して回転軸１２に保持されて回転軸１２と共に回転する構成としたが、第１の回転体は回転軸と共に回転するものであればよく、第１の回転体を回転軸に保持（固定）する手段は適宜、選択することができる。また、第１の回転体は回転軸と一体に形成することもできる。更に、回転伝達機構１０と同様に案内手段を設けることもできる。なお、各押圧部の各弾性変形部材との接触位置に、押圧部２３と同様の突起部を形成してもよいし、押圧部２３ｃと同様の窪み部を形成してもよい。また、押圧部に窪み部を形成する場合、各押圧部は初期状態で各空間部の円周方向の一側及び他側の弾性変形部材のいずれか一方又は双方と接触させることができ、助走区間を省略してもよい。更に、回転伝達機構１０ａと同様の外側板２９ａ、回転伝達機構１０ｂと同様の閉塞部２９ｂ又は回転伝達機構１０ｃと同様のカバー部２９ｃのいずれかを設けることもできる。 This rotation transmission mechanism (excluding the brake mechanism) 50 can be suitably applied to various rotation shafts that perform forward and reverse rotation. In this embodiment, the first rotating body 55 is held by the rotating shaft 12 via the rotating shaft mounting portion 64 and rotates together with the rotating shaft 12, but the first rotating body is formed together with the rotating shaft. Anything that rotates may be used, and a means for holding (fixing) the first rotating body on the rotation axis can be appropriately selected. Further, the first rotating body can be formed integrally with the rotating shaft. Further, a guide means can be provided as in the rotation transmission mechanism 10. In addition, a protrusion similar to the pressing portion 23 may be formed at a contact position of each pressing portion with each elastically deforming member, or a recessed portion similar to the pressing portion 23c may be formed. Further, when a recess is formed in the pressing portion, each pressing portion can be brought into contact with one or both of the elastically deforming members on one side and the other side in the circumferential direction of each space portion in the initial state, and the approaching portion can be run. The section may be omitted. Further, either the outer plate 29a similar to the rotation transmission mechanism 10a, the closing portion 29b similar to the rotation transmission mechanism 10b, or the cover portion 29c similar to the rotation transmission mechanism 10c can be provided.
以上、本発明の実施例を説明したが、本発明は、上記した形態に限定されるものでなく、請求の範囲に記載されている事項の範囲内で考えられるその他の実施例や変形例も含むものであり、要旨を逸脱しない条件の変更等は全て本発明の適用範囲である。また、それぞれの実施例に係る回転伝達機構の各要素を組合せて回転伝達機構を構成する場合も、本発明は適用される。
回転伝達機構を構成する部品のうち、特に材質を指定していない部品の材質としてはステンレス等の金属が好適に用いられるが、回転伝達機構の用途及び駆動力（トルク）の大きさ等に応じて、各種の材質を適宜、選択することができ、合成樹脂（強化プラスチックを含む）又は木を用いることもできる。
押圧部に突起部又は窪み部を設けない場合、押圧部の弾性変形部材との接触面の表面形状は凸円弧状に湾曲していることが好ましいが、これに限定されることなく適宜、選択することができ、平面状でもよいし、傾斜面を有していてもよい。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiment, and other examples and modifications which can be considered within the scope of the matters described in the claims are also included. All changes to the conditions that are included and do not deviate from the gist are within the scope of the present invention. The present invention is also applied when the rotation transmission mechanism is configured by combining the elements of the rotation transmission mechanism according to each embodiment.
Among the parts constituting the rotation transmission mechanism, a metal such as stainless steel is preferably used as the material of the parts for which the material is not specified, but it depends on the application of the rotation transmission mechanism and the magnitude of the driving force (torque). Therefore, various materials can be appropriately selected, and synthetic resin (including reinforced plastic) or wood can also be used.
When the pressing portion is not provided with a protrusion or a recess, the surface shape of the contact surface of the pressing portion with the elastically deforming member is preferably curved in a convex arc shape, but the present invention is not limited to this and is appropriately selected. It may be flat or may have an inclined surface.
上記実施例では、空間部及び押圧部が複数の場合について説明したが、空間部及び押圧部の数は適宜、選択することができ、１つでもよい。なお、各空間部において、押圧部と弾性変形部材との間に形成される助走区間の長さは適宜、選択することができる。また、回転伝達機構の用途によっては、助走区間を設けず、初期状態で押圧部と弾性変形部材が接触するようにしてもよい。さらに、押圧部と弾性変形部材との間に存在する助走区間（隙間）に対し、金属又は合成樹脂等の剛体で形成された挿入部材を挿入して、助走区間の長さを調整する（助走区間がなくなる場合も含む）こともできる。このとき、押圧部は挿入部材を介して弾性変形部材を圧縮するが、挿入部材が剛体であるため、実質的に空間部に占める押圧部の体積を増大させたことに相当し、助走区間が短くなる以外に、弾性変形部材の圧縮に与える影響はない。また、挿入部材で助走区間を埋めた場合、第１の回転体と第２の回転体との間のがたつきを軽減して、両者をスムーズに回転させることができる。なお、初期状態で押圧部と弾性変形部材との間に助走区間が存在する場合、助走区間を隔てて離間した押圧部と弾性変形部材が、互いの初期位置から接近して弾性変形部材が圧縮され、第１の回転体と第２の回転体が一体的に回転し始めるまでの間に第１の回転体と第２の回転体が相対回転するが、この初期の相対回転角度は１０～１６０度、好ましくは３０～１６０度、さらに好ましくは６０～１６０度とすることが好ましい。但し、この初期の相対回転角度は、前記範囲に限定されるものではなく、回転伝達機構の用途、駆動力（トルク）の大きさ及び弾性変形部材の材質（弾性率）等に応じて、適宜、選択することができる。 In the above embodiment, the case where there are a plurality of space portions and pressing portions has been described, but the number of space portions and pressing portions can be appropriately selected and may be one. In each space portion, the length of the approach section formed between the pressing portion and the elastically deforming member can be appropriately selected. Further, depending on the application of the rotation transmission mechanism, the approaching section may not be provided so that the pressing portion and the elastically deforming member come into contact with each other in the initial state. Further, the length of the approach section is adjusted by inserting an insertion member formed of a rigid body such as metal or synthetic resin into the approach section (gap) existing between the pressing portion and the elastically deforming member (approach). (Including the case where the section disappears) is also possible. At this time, the pressing portion compresses the elastically deforming member via the inserting member, but since the inserting member is a rigid body, it corresponds to substantially increasing the volume of the pressing portion occupying the space portion, and the approach section is Other than shortening, there is no effect on the compression of the elastically deformed member. Further, when the approach section is filled with the insertion member, the rattling between the first rotating body and the second rotating body can be reduced, and both can be rotated smoothly. When there is a run-up section between the pressing portion and the elastically deforming member in the initial state, the pressing portion and the elastically deforming member separated by the approaching section approach each other from the initial position and the elastically deforming member is compressed. Then, the first rotating body and the second rotating body rotate relative to each other until the first rotating body and the second rotating body start to rotate integrally, and the initial relative rotation angle is 10 to. It is preferably 160 degrees, preferably 30 to 160 degrees, and more preferably 60 to 160 degrees. However, this initial relative rotation angle is not limited to the above range, and is appropriately determined according to the application of the rotation transmission mechanism, the magnitude of the driving force (torque), the material (elastic modulus) of the elastically deformable member, and the like. , Can be selected.
回転伝達機構は、モーターの内部に組込む以外に、モーターの出力軸が回転伝達機構の回転軸となるようにして使用することもできるし、モーターの出力軸と回転伝達機構の回転軸を継手又は歯車等を介して連結して使用することもできる。いずれの場合も、モーターの出力軸の回転を回転伝達機構の第２の回転体の回転として取出すことができる。或いは、モーターの出力軸を回転伝達機構の第２の回転体に連結し、モーターの出力軸の回転を回転伝達機構の回転軸の回転として取出すこともできる。この場合、モーターの出力軸の軸心と第２の回転体の軸心を一致させて、出力軸と第２の回転体を直接、連結してもよいし、出力軸に取付けた歯車と、第２の回転体に取付けた歯車を噛合させてもよい。なお、第２の回転体に歯車を取付ける代りに、第２の回転体の外周に歯車の歯を形成することもできる。 The rotation transmission mechanism can be used so that the output shaft of the motor serves as the rotation shaft of the rotation transmission mechanism, in addition to being incorporated inside the motor, or the output shaft of the motor and the rotation shaft of the rotation transmission mechanism are joined or joined. It can also be used by connecting it via a gear or the like. In either case, the rotation of the output shaft of the motor can be taken out as the rotation of the second rotating body of the rotation transmission mechanism. Alternatively, the output shaft of the motor can be connected to the second rotating body of the rotation transmission mechanism, and the rotation of the output shaft of the motor can be taken out as the rotation of the rotation shaft of the rotation transmission mechanism. In this case, the axis of the output shaft of the motor and the axis of the second rotating body may be aligned with each other, and the output shaft and the second rotating body may be directly connected, or the gear attached to the output shaft may be connected. The gear attached to the second rotating body may be meshed. Instead of attaching the gear to the second rotating body, the teeth of the gear can be formed on the outer circumference of the second rotating body.
本発明に係る回転伝達機構は、耐久性に優れ、動作の安定性及び回転伝達の効率性を向上させることができ、自転車、土木用一輪車、リヤカー、車椅子等の人力車両及びモーター等の回転軸（駆動軸）に組込むことにより、入力エネルギーの有効利用を図ることができ、特にモーターでは、始動時の負荷を軽減し、入力変動の影響を受け難くして、動作の安定性を向上させることができる。 The rotation transmission mechanism according to the present invention has excellent durability, can improve the stability of operation and the efficiency of rotation transmission, and is a rotation shaft of a human-powered vehicle such as a bicycle, a unicycle for civil engineering, a rear car, a wheelchair, and a motor. By incorporating it into the (drive shaft), it is possible to effectively use the input energy. Especially in the motor, the load at the time of starting is reduced, it is less susceptible to input fluctuations, and the stability of operation is improved. Can be done.
１０、１０ａ、１０ｂ、１０ｃ、１０ｄ：回転伝達機構、１２：回転軸、１３：回転軸保持部、１４、１５：クランクアーム、１６、１６ａ、１６ｂ、１６ｃ、１６ｄ：第１の回転体、１７、１７ａ、１７ｂ、１７ｃ、１７ｄ、１７ｅ：第２の回転体、１８、１８ａ、１８ｂ、１８ｃ、１８ｄ：本体部、１９：空間部、２０、２０ａ、２０ｂ：弾性変形部材、２１：ベアリング、２２：側板部、２３、２３ａ、２３ｂ、２３ｃ：押圧部、２４、２４ａ、２４ｂ：助走区間、２５：チェーンリング、２６：突起部、２６ａ：窪み部、２７：筒状部、２８：案内手段、２８ａ：案内孔、２８ｂ：案内用突起、２９ａ：外側板、２９ｂ：閉塞部、２９ｃ：カバー部、３０：回転伝達機構、３１：モーター、３２：第１の回転体、３３：側板部、３４：押圧部、３５：第２の回転体、３６：本体部、３７：空間部、３７ａ、３７ｂ：助走区間、３８：外側板、３９：ローター、４０：ケーシング、４１：側壁、４２：ベアリング、４３：コイル部、４４：外周壁、４５：永久磁石、４６：整流子、４７：支持部材、４８：ブラシ、４９：リード線、５０：回転伝達機構、５１：フレーム、５２：ハンドリム、５３：スポーク、５４：車輪、５５：第１の回転体、５６：本体部、５７：凸部、５８：押圧部、５９：ブレーキ機構、６０：可動片、６１：支持軸、６２：凹部、６３：圧縮コイルバネ（付勢手段）、６４：回転軸装着部 10, 10a, 10b, 10c, 10d: Rotation transmission mechanism, 12: Rotation shaft, 13: Rotation shaft holder, 14, 15: Crank arm, 16, 16a, 16b, 16c, 16d: First rotating body, 17 , 17a, 17b, 17c, 17d, 17e: Second rotating body, 18, 18a, 18b, 18c, 18d: Main body, 19: Space, 20, 20a, 20b: Elastic deformation member, 21: Bearing, 22 : Side plate part, 23, 23a, 23b, 23c: Pressing part, 24, 24a, 24b: Approach section, 25: Chain ring, 26: Protruding part, 26a: Recessed part, 27: Cylindrical part, 28: Guide means, 28a: Guide hole, 28b: Guide protrusion, 29a: Outer plate, 29b: Closure part, 29c: Cover part, 30: Rotation transmission mechanism, 31: Motor, 32: First rotating body, 33: Side plate part, 34 : Pressing part, 35: Second rotating body, 36: Main body part, 37: Space part, 37a, 37b: Approach section, 38: Outer plate, 39: Rotor, 40: Casing, 41: Side wall, 42: Bearing, 43: Coil part, 44: Outer wall, 45: Permanent magnet, 46: Rectifier, 47: Support member, 48: Brush, 49: Lead wire, 50: Rotation transmission mechanism, 51: Frame, 52: Hand rim, 53: Spokes, 54: wheels, 55: first rotating body, 56: main body, 57: convex, 58: pressing, 59: brake mechanism, 60: movable piece, 61: support shaft, 62: concave, 63: Compression coil spring (urging means), 64: Rotating shaft mounting part

Claims (17)

  1. 回転軸と共に回転する第１の回転体と、該第１の回転体の軸方向一側に配置され前記回転軸を中心に回転可能な第２の回転体とを備え、
    前記第１の回転体は、前記回転軸と一体に形成される又は前記回転軸の外周に保持される本体部を有し、該本体部には、前記回転軸の軸心を中心として該回転軸の外周に同心円状に湾曲し、該本体部を厚さ方向に貫通する１又は複数の円弧状の空間部が形成され、該各空間部の一部に弾性変形部材が収容されており、
    前記第２の回転体は、前記回転軸又は前記第１の回転体に回転可能に保持される側板部と、該側板部の軸方向他側に突出する１又は複数の押圧部とを有し、
    該各押圧部は、前記第１の回転体の軸方向一側から前記各空間部に挿入されて、前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記各空間部の周壁と前記各押圧部との間で前記弾性変形部材が圧縮されることを特徴とする回転伝達機構。     A first rotating body that rotates together with a rotating shaft and a second rotating body that is arranged on one side in the axial direction of the first rotating body and can rotate about the rotating shaft are provided.
    The first rotating body has a main body portion formed integrally with the rotating shaft or held on the outer periphery of the rotating shaft, and the main body portion rotates around the axis of the rotating shaft. One or a plurality of arc-shaped space portions that are concentrically curved on the outer circumference of the shaft and penetrate the main body portion in the thickness direction are formed, and an elastic deformation member is housed in a part of each space portion.
    The second rotating body has a side plate portion rotatably held by the rotating shaft or the first rotating body, and one or a plurality of pressing portions projecting to the other side in the axial direction of the side plate portion. ,
    Each of the pressing portions is inserted into each of the space portions from one side in the axial direction of the first rotating body, and while the first rotating body and the second rotating body rotate relative to each other, the pressing portion is described. A rotation transmission mechanism characterized in that the elastically deformed member is compressed between the peripheral wall of each space portion and each of the pressing portions.
  2. 請求項１記載の回転伝達機構において、前記各押圧部は、初期状態で前記各弾性変形部材と助走区間を隔てて配置され、前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記弾性変形部材と接近することを特徴とする回転伝達機構。 In the rotation transmission mechanism according to claim 1, each of the pressing portions is arranged so as to be separated from each elastically deforming member in an initial state, and the first rotating body and the second rotating body are relatively relative to each other. A rotation transmission mechanism characterized in that it approaches the elastically deforming member during rotation.
  3. 請求項１記載の回転伝達機構において、前記各押圧部は、前記各弾性変形部材に向かって拡開した窪み部を有し、初期状態で該窪み部の開口側の周縁で前記各弾性変形部材と接触していることを特徴とする回転伝達機構。 In the rotation transmission mechanism according to claim 1, each of the pressing portions has a recessed portion that expands toward each of the elastically deformed members, and in the initial state, each of the elastically deformed members is on the peripheral edge of the opening side of the recessed portion. A rotation transmission mechanism characterized by being in contact with.
  4. 請求項１～３のいずれか１記載の回転伝達機構において、前記第１の回転体は、前記本体部と一体に形成されて又は前記本体部に取付けられて、該本体部の軸方向他側で前記各空間部を閉塞する閉塞部を有することを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 1 to 3, the first rotating body is formed integrally with the main body or attached to the main body, and the other side in the axial direction of the main body. A rotation transmission mechanism characterized by having a closed portion that closes each of the space portions.
  5. 請求項１～３のいずれか１記載の回転伝達機構において、前記第２の回転体は、前記第１の回転体の軸方向他側で前記回転軸又は前記第１の回転体に回転可能に保持される外側板を有し、該外側板は、前記各空間部を貫通する前記各押圧部により前記側板部と連結されていることを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 1 to 3, the second rotating body can be rotated to the rotating shaft or the first rotating body on the other side in the axial direction of the first rotating body. A rotation transmission mechanism having an outer plate to be held, wherein the outer plate is connected to the side plate portion by each pressing portion penetrating the respective space portions.
  6. 請求項１～３のいずれか１記載の回転伝達機構において、前記第２の回転体は、前記各押圧部の先側に設けられ、前記第１の回転体の軸方向他側で前記各空間部の一部又は全部を覆うカバー部を有することを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 1 to 3, the second rotating body is provided on the front side of each pressing portion, and the space is provided on the other side in the axial direction of the first rotating body. A rotation transmission mechanism characterized by having a cover portion that covers a part or all of the portion.
  7. 請求項１～６のいずれか１記載の回転伝達機構において、前記第１、第２の回転体は、互いに係合し、前記第１の回転体と前記第２の回転体の相対回転を案内しつつ、相対回転量を規制する少なくとも１対の案内手段を備えていることを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 1 to 6, the first and second rotating bodies engage with each other to guide the relative rotation of the first rotating body and the second rotating body. However, the rotation transmission mechanism is provided with at least one pair of guiding means for regulating the relative rotation amount.
  8. 請求項１～７のいずれか１記載の回転伝達機構において、前記各空間部の円周方向の一側及び他側にそれぞれ前記弾性変形部材が収容されていることを特徴とする回転伝達機構。 The rotation transmission mechanism according to any one of claims 1 to 7, wherein the elastically deforming member is housed on one side and the other side in the circumferential direction of each space portion.
  9. 回転軸と共に回転する第１の回転体と、該第１の回転体の軸方向一側に配置され前記回転軸を中心に回転可能な第２の回転体とを備え、
    前記第１の回転体は、前記回転軸と一体に形成される又は前記回転軸の外周に保持される側板部と、該側板部の軸方向一側に突出する１又は複数の押圧部とを有し、
    前記第２の回転体は、前記回転軸又は前記第１の回転体に回転可能に保持される本体部を有し、該本体部には、前記回転軸の軸心を中心として該回転軸の外周に同心円状に湾曲し、該本体部を厚さ方向に貫通して、該本体部の軸方向他側から前記各押圧部が挿入される１又は複数の円弧状の空間部が形成され、該各空間部の一部に弾性変形部材が収容されており、
    前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記各押圧部と前記各空間部の周壁との間で前記弾性変形部材が圧縮されることを特徴とする回転伝達機構。     A first rotating body that rotates together with a rotating shaft and a second rotating body that is arranged on one side in the axial direction of the first rotating body and can rotate about the rotating shaft are provided.
    The first rotating body includes a side plate portion formed integrally with the rotating shaft or held on the outer periphery of the rotating shaft, and one or a plurality of pressing portions protruding in one axial direction of the side plate portion. Have and
    The second rotating body has a main body portion rotatably held by the rotating shaft or the first rotating body, and the main body portion has a main body portion of the rotating shaft centered on the axis of the rotating shaft. One or a plurality of arc-shaped space portions are formed, which are concentrically curved on the outer periphery and penetrate the main body portion in the thickness direction to insert the respective pressing portions from the other side in the axial direction of the main body portion. An elastically deformable member is housed in a part of each of the spaces.
    While the first rotating body and the second rotating body rotate relatively, the elastically deforming member is compressed between each pressing portion and the peripheral wall of each space portion. Rotation transmission mechanism.
  10. 請求項９記載の回転伝達機構において、前記各押圧部は、初期状態で前記各弾性変形部材と助走区間を隔てて配置され、前記第１の回転体と前記第２の回転体が相対的に回転する間に、前記弾性変形部材と接近することを特徴とする回転伝達機構。 In the rotation transmission mechanism according to claim 9, each of the pressing portions is arranged with the elastically deforming member and the approach section separated from each other in an initial state, and the first rotating body and the second rotating body are relatively relative to each other. A rotation transmission mechanism characterized in that it approaches the elastically deforming member during rotation.
  11. 請求項９記載の回転伝達機構において、前記各押圧部は、前記各弾性変形部材に向かって拡開した窪み部を有し、初期状態で該窪み部の開口側の周縁で前記各弾性変形部材と接触していることを特徴とする回転伝達機構。 In the rotation transmission mechanism according to claim 9, each of the pressing portions has a recessed portion that expands toward each of the elastically deformed members, and in the initial state, each of the elastically deformed members is on the peripheral edge of the opening side of the recessed portion. A rotation transmission mechanism characterized by being in contact with.
  12. 請求項９～１１のいずれか１記載の回転伝達機構において、前記第２の回転体は、前記本体部と一体に形成されて又は前記本体部に取付けられて、該本体部の軸方向一側で前記各空間部を閉塞する閉塞部を有することを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 9 to 11, the second rotating body is formed integrally with the main body or attached to the main body, and is one side in the axial direction of the main body. A rotation transmission mechanism characterized by having a closed portion that closes each of the space portions.
  13. 請求項９～１１のいずれか１記載の回転伝達機構において、前記第１の回転体は、前記第２の回転体の軸方向一側で前記回転軸と一体に形成される又は前記回転軸の外周に保持される外側板を有し、該外側板は、前記各空間部を貫通する前記各押圧部により前記側板部と連結されていることを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 9 to 11, the first rotating body is formed integrally with the rotating shaft on one side in the axial direction of the second rotating body, or is formed on the rotating shaft. A rotation transmission mechanism having an outer plate held on the outer periphery, wherein the outer plate is connected to the side plate portion by each pressing portion penetrating the respective space portions.
  14. 請求項９～１１のいずれか１記載の回転伝達機構において、前記第１の回転体は、前記各押圧部の先側に設けられ、前記第２の回転体の軸方向一側で前記各空間部の一部又は全部を覆うカバー部を有することを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 9 to 11, the first rotating body is provided on the front side of each pressing portion, and each space is provided on one side in the axial direction of the second rotating body. A rotation transmission mechanism characterized by having a cover portion that covers a part or all of the portion.
  15. 請求項９～１４のいずれか１記載の回転伝達機構において、前記第１、第２の回転体は、互いに係合し、前記第１の回転体と前記第２の回転体の相対回転を案内しつつ、相対回転量を規制する少なくとも１対の案内手段を備えていることを特徴とする回転伝達機構。 In the rotation transmission mechanism according to any one of claims 9 to 14, the first and second rotating bodies engage with each other to guide the relative rotation of the first rotating body and the second rotating body. However, the rotation transmission mechanism is provided with at least one pair of guiding means for regulating the relative rotation amount.
  16. 請求項９～１５のいずれか１記載の回転伝達機構において、前記各空間部の円周方向の一側及び他側にそれぞれ前記弾性変形部材が収容されていることを特徴とする回転伝達機構。 The rotation transmission mechanism according to any one of claims 9 to 15, wherein the elastically deforming member is housed on one side and the other side in the circumferential direction of each space portion.
  17. 請求項８又は１６記載の回転伝達機構を備えたローターを有し、前記第２の回転体の正転及び逆転を前記弾性変形部材を介して前記第１の回転体に伝達し、前記回転軸から出力することを特徴とするモーター。 The rotor provided with the rotation transmission mechanism according to claim 8 or 16, the forward rotation and the reverse rotation of the second rotating body are transmitted to the first rotating body via the elastic deformation member, and the rotating shaft. A motor characterized by outputting from.
PCT/JP2019/047237 2019-06-14 2019-12-03 Rotation transmission mechanism and motor WO2020250460A1 (en)

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