WO2019237507A1 - Front derailleur - Google Patents

Front derailleur Download PDF

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Publication number
WO2019237507A1
WO2019237507A1 PCT/CN2018/101981 CN2018101981W WO2019237507A1 WO 2019237507 A1 WO2019237507 A1 WO 2019237507A1 CN 2018101981 W CN2018101981 W CN 2018101981W WO 2019237507 A1 WO2019237507 A1 WO 2019237507A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
derailleur
crank
fixedly connected
chain
Prior art date
Application number
PCT/CN2018/101981
Other languages
French (fr)
Chinese (zh)
Inventor
黄跃波
Original Assignee
黄跃波
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 黄跃波 filed Critical 黄跃波
Priority to PCT/CN2019/079951 priority Critical patent/WO2019237790A1/en
Publication of WO2019237507A1 publication Critical patent/WO2019237507A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J13/00—Guards for chain, chain drive or equivalent drive, e.g. belt drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J13/00—Guards for chain, chain drive or equivalent drive, e.g. belt drive
    • B62J13/04—Guards for chain, chain drive or equivalent drive, e.g. belt drive completely enclosing the chain drive or the like
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur

Definitions

  • the invention relates to a speed change device for a bicycle, in particular to a front dial.
  • a front derailleur (front derailleur) of a bicycle is mounted on a frame seat tube. Because the front dial is installed under the center of gravity of the rider + bicycle combination and has ample space, it will not affect the handling of the bicycle. It is more suitable for installing heavy weight accessories, such as the battery of an electric bicycle or / And motor.
  • the lower end of one of the derailleur plates of the derailleur is bent to close the gap at the lower end of the derailleur to prevent the chain from coming out. Because it is a non-removable structure, the chain must be disconnected to remove the forward dial when repairing or replacing the forward dial.
  • the main object of the present invention is to propose a front dial, and bicycles having the front dial are not prone to greasy clothes of riders.
  • the front dial includes: a crank cover, a derailleur, and an actuating portion; the crank cover is configured to cover at least the upper portion of the crank; the crank cover is fixedly connected to the middle of the frame; The inside of the disc cover; the actuating part is connected between the crank cover and the derailleur, and is used to support and actuate the lateral displacement of the derailleur relative to the crank cover to drive the derailleur to move the chain from the initial position of the crank Shift to the target gear.
  • crank cover Since the derailleur is built in the crank cover, that is, the chain and the crank are shielded by the crank cover, the problem of greasy rider's clothing is avoided.
  • protective effect of the crank cover reduces the interference of undesirable external factors, thereby improving the reliability of the transmission system and reducing the maintenance workload.
  • the scheme of the derailleur is that the derailleur includes two derailleur plates; the upper end of the derailleur plate is integrally manufactured or fixedly connected together; the derailleur plate is fixedly connected or integrally manufactured with the actuating part.
  • the front dial also includes an anti-off chain portion; the anti-off chain portion can be opened and closed connected to the lower end of the derailleur plate to open or close the gap between the lower end of the derailleur plate.
  • the actuating part includes a guide rail, a slider, a biasing mechanism a, and a pull wire a;
  • the guide rail is fixedly connected laterally to the crank cover;
  • the slider can be reciprocally connected to the guide rail;
  • the slider and the derailleur The device is fixedly connected or integrally manufactured;
  • the biasing mechanism a is connected to the slider to apply a biasing force to the slider;
  • the end of the pulling wire a is connected to the slider, and the pulling wire a runs through the tube a or is connected to the motor a to connect with the biasing force.
  • the mechanism a cooperates to displace the slider.
  • the actuating part includes a link mechanism, a pull wire b, and a biasing mechanism b; the link mechanism is connected between the crank cover and the derailleur to support and guide the lateral displacement of the derailleur;
  • the biasing mechanism b is connected to the link mechanism to apply a biasing force to the link mechanism;
  • the end of the pull wire b is connected to the link mechanism, and the pull wire b runs through the bobbin b or is connected to the motor b to work with the biasing mechanism b Move the link mechanism.
  • the actuating part includes a movable rod; the movable rod can be reciprocally displaced along the axial direction of the crank cover; one end of the movable rod is integrally manufactured or fixedly connected with the derailleur; the actuating portion further includes A wire drawing mechanism or a hydraulic mechanism; the wire drawing mechanism includes a biasing mechanism c and a wire c; the biasing mechanism c is connected to a movable rod to apply a biasing force to the movable rod; an end of the wire c is connected to the movable rod, and the wire c runs through the pipe c Or connected to the motor c to cooperate with the biasing mechanism c to move the movable rod along its axial direction; or the hydraulic mechanism includes a cylinder block and a piston, the cylinder block is fixedly connected to the crank cover; the end of the piston is fixedly connected to the movable rod to Displace the movable rod in its axial direction.
  • crank cover includes a cover body a and a cover body b; the rear portion of the crank cover has an opening for accommodating the chain; the cover body a and the cover body b are along the plane of the crank shaft axis , Removable fixed connection.
  • This solution adopts a scheme in which two cover bodies are formed into a completely closed sprocket cover, which makes it easier to open the sprocket cover to inspect and maintain its internal parts.
  • crank cover is configured in a box shape with an open rear end, so that when the crank cover is installed in place, it can accommodate the crank and the chain; the position of the crank cover corresponding to the crank axis is provided A central shaft hole; a through groove is provided on the inner cover wall of the crank cover, and the through groove penetrates from the rear end of the crank cover to the central shaft hole, so that the crank cover can accommodate the central shaft when it is installed.
  • This solution adopts a substantially fully-enclosed crank cover, which can be easily removed from the back to the front, which is convenient for the inspection and maintenance of its internal parts.
  • a secondary object of the present invention is to prevent the chain from getting caught in the gap between the crank cover and the crank.
  • the gap between the side wall of the crank cover and the side of the crank ⁇ the width of the chain; or the crank cover includes at least one bump; the bump is fixedly connected to the crank cover.
  • Side projection position of the side wall and chain meshing segment; the gap between the bump and the side of the chainring ⁇ the width of the chain.
  • a main object of the present invention is to propose a bicycle that includes all the advantages of the front dial of the present invention.
  • the bicycle includes a front dial according to any one of claims 1 to 9.
  • Fig. 2 is a plan view of a front dial of the first embodiment.
  • Fig. 3 is a rear view of a front dial of the first embodiment.
  • FIG. 4 is an exploded view of a forward dial in Embodiment 1.
  • FIG. 4 is an exploded view of a forward dial in Embodiment 1.
  • FIG. 5 is a schematic diagram of a connection scheme between a crankset cover and a frame in Embodiment 1.
  • FIG. 5 is a schematic diagram of a connection scheme between a crankset cover and a frame in Embodiment 1.
  • FIG. 6 is a schematic diagram of a forward dial using a motor as a power source in Embodiment 1.
  • FIG. 6 is a schematic diagram of a forward dial using a motor as a power source in Embodiment 1.
  • FIG. 7 is a schematic diagram of different schemes of the crankset cover of Embodiment 1.
  • FIG. 7 is a schematic diagram of different schemes of the crankset cover of Embodiment 1.
  • FIG. 8 is a schematic diagram of a connection scheme between a crankset cover and a frame in Embodiment 1.
  • FIG. 8 is a schematic diagram of a connection scheme between a crankset cover and a frame in Embodiment 1.
  • FIG. 9 is a schematic diagram of a forward dial in Embodiment 2.
  • FIG. 9 is a schematic diagram of a forward dial in Embodiment 2.
  • FIG. 10 is an exploded view of a forward dial in Embodiment 2.
  • FIG. 10 is an exploded view of a forward dial in Embodiment 2.
  • FIG. 11 is a schematic diagram of a forward dial in Embodiment 3.
  • FIG. 11 is a schematic diagram of a forward dial in Embodiment 3.
  • FIG. 12 is an exploded view of a forward dial in Embodiment 3.
  • FIG. 12 is an exploded view of a forward dial in Embodiment 3.
  • FIG. 13 is an exploded view of the front dial of the third embodiment, in order to show the inside, the crank cover is partially cut away.
  • FIG. 14 is a schematic view of a forward dial of Embodiment 4, in order to show the inside, the crank cover is partially cut away.
  • FIG. 15 is an exploded view of a forward dial in Embodiment 4.
  • FIG. 15 is an exploded view of a forward dial in Embodiment 4.
  • FIG. 16 is a perspective view of a forward dial of Embodiment 5.
  • FIG. 17 is an exploded view of a forward dial in Embodiment 5.
  • FIG. 18 is a schematic diagram of another link scheme of Embodiment 5.
  • FIG. 18 is a schematic diagram of another link scheme of Embodiment 5.
  • FIG. 19 is an isometric view of a forward dial of Embodiment 6.
  • Fig. 20 is an exploded view of a forward dial in Embodiment 6.
  • FIG. 22 is an exploded view of a forward dial in Embodiment 7.
  • FIG. 22 is an exploded view of a forward dial in Embodiment 7.
  • 23 and 8 are a plan view and a perspective view of a crank cover provided with a bump and a bump according to the eighth embodiment.
  • FIG. 24 and Embodiment 8 are side and perspective views of a crank cover provided with a bump and a bump.
  • this description uses the transmission system to be located on the right side of the frame as an example.
  • the present invention also includes a scheme in which the transmission system is located on the left side of the frame.
  • the forward direction of the bicycle is taken as the front direction; the horizontal direction of the bicycle is taken as the lateral direction.
  • the crank cover includes a cover body a101 and a cover body b102, and the cover body a101 and the cover body b102 can be regarded as a whole.
  • the dental plate cover is cut along a plane where the axis line of the dental plate is located. , The two can be disassembled and connected together.
  • the rear end of the cover body a101 and the cover body b102 has an opening for accommodating the access of the chain.
  • the top cover wall of the cover body a101 is provided with an opening 103 through which the slider 107 penetrates.
  • the crankshaft cover is provided with a shaft hole 105 at a position corresponding to the central shaft.
  • connection bases (121; 122) are semi-circular, and the connection bases (121; 122) are fixedly connected to the cover body a101 and the cover body b102 with (at least) three screws 125.
  • the connecting seats (121; 122) are spliced into a ring shape and are clamped at the five-way of the frame (not shown), and then fixedly connected by two screws 123. In this way, the crank cover is fixedly connected to the middle of the frame. Note: 1.
  • the plane on which the axis line of the crank is located is preferably horizontal. 2.
  • the cover body a and the cover body b can be detachably and fixedly connected together in various ways, for example: 2.1, the lower part of the cover body a is sleeved on the upper part of the cover body b, and the screws pass through the cover body a and the cover body b. Junction. 2.2.
  • the lower part of the cover body a is provided with a plurality of bamboo shoots along the circumferential direction
  • the upper part of the cover body b is provided with a plurality of bamboo shoot slots along the circumferential direction.
  • the cover a is fastened to the upper part of the cover b and the card shoots are snapped into the card shoot groove .
  • the actuating part includes a guide rail 106, a slider 107, a pull wire 110, a spring 111 (biasing mechanism), and a wire tube 112.
  • Two brackets (115; 116) are fixedly connected to the cover walls at the left and right ends of the opening 103, respectively.
  • the cross-section of the guide rail 106 is non-circular (for example, rectangular, triangular, hexagonal, etc.), and is preferably rectangular in this example.
  • the two ends of the guide rail 106 are fixedly connected to the bracket (115; 116) with one screw 106a, and the slider 107 has a through hole 107a corresponding to the cross-sectional shape of the guide rail 106 and fitted with a clearance.
  • the guide rail 106 passes through the through hole 107a.
  • the slider 107 is provided with a through wire hole, and the wire 110 penetrates the wire hole.
  • the diameter of the end of the wire 110 is larger than the diameter of the wire hole.
  • the pull wire is fixedly connected to the slider, and a common pull wire fixing scheme in the field can also be adopted: the pull wire passes through the through hole on the anchor screw and winds the anchor screw once, and the anchor screw is screwed into the screw hole of the slider , While tightening the anchor screw, press the pull wire to fix it).
  • the spring 111 is sleeved on the outside of the pull wire 110, and one end of the spring 111 is closely attached to the side of the slider 107. The other end of the spring 111 is in close contact with the side of the bracket 115.
  • a tubular wire socket 115a is provided on the outer side of the bracket 115, and the end of the wire pipe 112 is inserted into the wire socket 115a with an interference.
  • the pull wire 110 runs through the wire tube 112.
  • the derailleur is similar to the prior art and includes two curved derailleur plates (108; 109).
  • the derailleur plates (108; 109) are located on both sides of the chain.
  • the ends of the derailleur plate (108; 109) are manufactured integrally (or fixedly connected by welding, screwing, etc.) together.
  • the derailleur and the slider 107 are integrally manufactured (or fixedly connected by welding, bonding, screwing, etc.).
  • the anti-dropout includes bolts 168, which are screwed into screw holes 168a at the lower end of the derailleur plate (108; 109).
  • the following description uses the outer disc (initial gear) of the chainring to shift to the inner disc (target gear) as an example for description.
  • the rider pulls the pull wire 110 through the control handle.
  • the pulling force of the pull wire 110 overcomes the elastic force of the spring 111 and moves the slider 107 along the guide rail 106.
  • the slider 107 drives the derailleur plate (108; 109) to move laterally.
  • 108; 109) Push the chain from the initial position of the chainring 150 (large disk) to the target position (small disk).
  • the derailleur plate (108; 109) pushes the chain from the small plate to the large plate under the action of the spring force of the spring 111.
  • This example also has the ability to quickly disassemble to facilitate cleaning the chain or troubleshooting. Loosen the screws 123, the cover a101 and cover b102 can be removed from the frame, and then remove the bolt 168, so that the lower part of the derailleur plate (108; 109) is opened, and the chain can be removed without removing the chain. Remove the derailleur plate (108; 109), the actuator and the cover a101 together.
  • This example also includes a variety of derivative solutions: 1. Since the derailleur and the slider are integrally manufactured or fixedly connected, the end of the pull wire can also be fixedly connected to the derailleur. 2. Since the actuating part and the derailleur are both provided on the upper part of the crankset, the crankset cover only needs to include the cover body a, that is, the crankset cover only needs to cover the upper part of the crankset. 3.
  • the pull wire uses a motor as a power source, for example, as shown in FIG. 6: the motor 160 is fixed on the top of the cover a101 by bolts.
  • An output shaft of the motor 160 is fixedly connected to a winding shaft 161, an end portion of the pulling wire 162 is fixedly connected to the winding shaft 161, and the pulling wire 162 is wound around the winding shaft 161.
  • the control device (not the present invention, not shown) sends an operating current to the motor 160, and the motor 160 rotates, which drives the winding shaft 161 to tighten or release the pull wire 162.
  • the plane of the axis of the crankshaft and the horizontal plane The included angle includes any angle.
  • FIG. 7 shows a scheme of the fixed connection that the cover a170 and the cover b171 can be removed along a vertical plane.
  • the actuating portion is provided on the cover body b171.
  • FIG. 8 shows another connection scheme between the crank cover and the frame: the connection seat 173 is fixedly connected to the seat tube (not shown) of the frame using a structure of a pipe hoop.
  • the crank cover 175 is provided with a lifting ear 176, and the connecting seat 173 and the lifting ear 176 are fixedly connected together by at least two screws 177.
  • the biasing mechanism has a variety of schemes, such as: 6.1.
  • the spring in the above scheme with a spring, one end of the spring is fixedly connected to the front or rear position of the crank cover and the slider, and the other end of the spring is fixedly connected On the slider to apply a biasing force to the slider.
  • springs Due to the short stroke of the slider, springs can also be replaced by two magnetic poles with opposite poles. The magnetic rings are placed on the outside of the guide rail or the cable. Replace the spring force of the spring with the repulsive magnetic force of the same level.
  • the technician may adopt various schemes of the biasing mechanism as appropriate.
  • This example differs from Example 1 in that the crank cover and the actuating portion are different.
  • the crankset cover 201 has a box shape with an open rear end, so that the crankset cover can accommodate a crankset and a chain when it is inserted into the installation position from front to back.
  • the crankshaft cover 201 is provided with a central shaft hole from the central shaft hole to the rear of the crankshaft cover.
  • a through groove 201b is provided on the cover wall inside the crankshaft cover 201, the purpose of which is to make the crankshaft
  • the cover 201 accommodates the bottom bracket when passing.
  • the screws 202b pass through the through holes of the lifting ears 202a and are screwed into the screw holes 201a provided on the inner cover wall of the crank cover 201. In this way, the crank cover 201 is fixedly connected to the middle of the frame 202.
  • the actuating part in this example can be roughly regarded as the actuating part of Example 1 being built in the crank cover 201: the cover wall on both sides of the crank cover 201 is provided with through holes 201 c.
  • the hole 201c and the guide rail 203 are clearance fit.
  • the guide rail 203 is inserted into the hole 201c, and the screw 203a penetrates the connecting plate at the outer end of the guide rail 203 and is screwed into a screw hole on the outer cover wall of the crank cover 201 to fix the guide rail 203.
  • the slider 209 is sleeved on the guide rail 203 and can be reciprocally slid.
  • the chain guide 210 is integrally manufactured (or welded, bonded, and screwed) on the lower part of the slider 209.
  • the spring 208 is sleeved outside the guide rail 203, and the spring 208 is disposed between the slider 209 and the inner cover wall of the crank cover 201.
  • An end portion of the pull wire 206 is fixed to the slider 209, and an end portion of the wire tube 207 is fixedly (threaded) connected to a connection seat 205 provided on the inner cover wall of the crank cover 201.
  • the cable in this example can also be driven by a motor.
  • Example 1 show a scheme in which the actuator includes a guide rail and a slider.
  • This example differs from Embodiment 1 in that the actuating portion is different.
  • the actuating part includes a parallel link (312; 313), a connecting body 319, a pull wire 310, a wire tube 311, a connecting wire 315, a spring 316, and a spring seat 317.
  • the upper end of the derailleur plate (308; 309) is integrally manufactured (or fixedly connected by welding, bonding, etc.) on the connecting body 319.
  • the upper part of the connecting body 319 has two pivot shafts 331, and the rear ends of the connecting rods (312; 313) have holes, respectively.
  • the pivot shafts 331 are clearance-fitted and penetrate the holes at the rear ends of the connecting rods (312; 313).
  • Two snap rings 335 are respectively Mounted in the slot at the end of the pivot 331.
  • Two pivots 330 penetrate through the upper cover wall of the crank cover 301, the front end of the connecting rod (312; 313) has a hole, the pivot shaft 330 fits through the hole at the front end of the connecting rod (312; 313), and two snap rings 333 Mounted in the slot at the end of the pivot 330, respectively.
  • the upper part of the connecting body 319 is provided with a wire drawing seat 332.
  • the wire tube 311 is fixedly connected to a wire tube base 351 provided on the top of the crank cover 301.
  • the pull wire 310 passes through the wire tube 311, and the end of the pull wire 310 is fixedly connected to the pull wire rod 332.
  • the pull rod 332 is integrally manufactured on the top of the connecting body 319.
  • the spring seat 317 is fixedly connected to the top of the crank cover 301 with a screw 355.
  • the spring seat 317 is tubular (in order to clearly show its internal structure, the upper part of the spring seat 317 is cut away in the figure).
  • the spring 316 is placed in the spring seat 317, and an end cover 316a at one end of the spring 316 abuts the inner end wall of the spring seat 317.
  • the connecting wire 315 penetrates the end of the spring seat 317, the end cover 316a of the spring 316, and the spring 316, and then is fixedly connected to the end cover 316b of the other end of the spring 316.
  • the other end of the connecting wire 315 passes through the terminal block 352 provided on the top of the crank cover 301, and is fixedly connected to the pull rod 332, so that the spring force of the spring 316 finally acts on the derailleur plate (308; 309).
  • FIG. 13 shows a scheme in which an actuator of this type is built in a crank cover.
  • the connecting rod (312; 313) is located inside the crank cover 301.
  • the top of the crank cover 301 has two pivot holes 301a; the two pivot holes 301a of the two screws 361 are respectively screwed into the screw holes at the ends of the connecting rods (312; 313).
  • One end of the derailleur plate (308; 309) is integrally manufactured in the connecting body 365, and the connecting body 365 has 2 pivot holes; the two screws 362 pass through the pivot holes provided at the other end of the connecting rod (312; 313) with a gap respectively. Then screw it into the screw hole of the connecting body 365.
  • the end of the pull wire 310 is fixedly connected to the connecting body 365, one end of the spring 360 is pressed against the connecting body 365, and the other end is pressed against the inner wall of the crank cover 301.
  • An end of the wire tube 311 is screwed to a wire tube base (not shown) provided on a side wall of the crank cover 301.
  • the pull wire 310 overcomes the spring force of the spring (316 or 365), and causes the connecting body (319 or 365) to laterally move under the limitation of the connecting rod (312; 313), thereby driving the derailleur plate (308; 309) to Achieve variable speed.
  • the cable in this example can also be driven by a motor.
  • This example differs from Embodiment 1 in that the actuating portion is different.
  • the cover wall on the top of the crank cover 401 is provided with two ear plates 401 a and 401 b which are arranged forward and backward and vertically downward.
  • Each end of the ear plate (401a; 401b) is provided with a pivot hole.
  • the upper and lower ends of the four links (422a; 422b; 422c; 422d) are provided with pivot holes.
  • the pivot holes at the upper end of the connecting rod (422a; 422b; 422c; 422d) are aligned with the pivot holes at both ends of the ear plate (401a; 401b).
  • Two pivots 421 penetrate the pivot hole on the ear plate (401a; 401b) and the pivot hole at the upper end of the connecting rod (422a; 422b; 422c; 422d) respectively.
  • One end of the pivot 421 is provided with a shaft cap, and the other end is provided with There are snap grooves and snap rings, so that the upper end of the connecting rod (422a; 422b; 422c; 422d) is pivotally connected to the ear plate (401a; 401b).
  • the upper part of the derailleur plate (408; 409) is manufactured as a whole, and is provided with two front and rear lifting eyes 420. Both ends of the lifting eyes 420 are provided with pivot holes.
  • the pivot holes at the lower ends of the connecting rods (422a; 422b; 422c; 422d) are aligned with the pivot holes at both ends of the lifting ear 420.
  • Two pivots 423 penetrate the pivot holes at both ends of the lifting lug 420 and the pivot holes at the lower ends of the connecting rods (422a; 422b; 422c; 422d).
  • One end of the pivot 423 is provided with a shaft cap, and the other end is provided with a slot and a The snap ring, so that the lower end of the connecting rod (422a; 422b; 422c; 422d) is pivotally connected to the upper part of the derailleur plate (408; 409).
  • a deflection spring 416 is sleeved on a pivot 421.
  • One end of the spring 416 is caught on the connecting rod 422a, and the other end is caught on the inner wall of the crank cover 401.
  • the wire hook 413 is fixedly connected (bonded, welded, etc.) or integrally manufactured on the connecting rod 422d, and the end of the wire 410 is fixedly connected to the wire hook 413.
  • the outer wall of the crank cover 401 is provided with a wire socket (not shown), and the wire pipe 411 is inserted into the wire socket with interference.
  • the pull wire 410 pulls the link 422d against the spring force of the spring 416, and the link mechanism drives the derailleur plate (408; 409) to move laterally.
  • the lower part of the derailleur plate (408; 409) is provided with a through hole 460, and the through hole 460 is a rectangular hole.
  • the front part of the bamboo shoot 461 is provided with 2 reeds, and the end of the spring leaf is provided with a barb, so that the bamboo shoot 461 is inserted into the through-hole 460, and the barb of the spring leaf fixes the bamboo shoot 461 in the through-hole 460.
  • the anti-dropout device further includes a latch pin, which penetrates the lower end of the two derailleur plates, and is fixedly connected by means of screw fixing or interference fit. Into the pin hole at the end of the derailleur plate.
  • the anti-dropout device includes a baffle plate. One end of the baffle plate is pivotally connected to the lower end of a derailleur plate. The baffle is rotated to block the gap between the derailleur plates. It is fixedly connected to the lower end of another derailleur plate by other methods.
  • the link mechanism in this case is actually similar to the link mechanism of the swing-up forward dial commonly used in the prior art. 2.
  • the cable in this example can also be driven by a motor.
  • This example differs from Embodiment 1 in that the actuating portion is different.
  • an inner cover wall of the crank cover 501 is provided with an opening 502 and a connection seat 503.
  • the cross section of the connecting base 503 is U-shaped, and two pivot holes are provided on each of two side walls thereof.
  • the upper and lower ends of the connecting rods (510; 511; 512; 513) are provided with pivot holes.
  • the pivot hole at the lower end of the connecting rod (510; 511; 512; 513) is aligned with the pivot hole of the connecting seat 503 one by one and is pivotally connected together by a pivot (517; 518).
  • the connecting member 531 is a U-shaped rod member, and two pivot holes are provided on both sides of the connecting member 531.
  • the middle portion of the connecting member 531 passes through the opening 502 and is fixedly connected with the derailleur 530 by two screws 532.
  • the pivot hole at the upper end of the connecting rod (510; 511; 512; 513) is aligned with the pivot hole of the connecting member 531 one by one and is pivotally connected together by a pivot (515; 516).
  • the torsion spring 519 is sleeved in the middle section of the pivot 517, and one end of the spring 519 is caught in a hole in the middle of the connecting rod 512. The other end of the spring 519 is pressed against the connecting seat 503.
  • the connecting rod 513 is different from other connecting rods (510; 511; 512).
  • the connecting rod 513 is L-shaped, and the lower part is provided with a screw hole 515.
  • the screw 521 has a wire drawing hole.
  • the wire 502 passes through the wire drawing hole.
  • the screw 521 is screwed in the screw hole. 515 and clamp the pull wire 520 between the connecting rod 513 and the end cap of the screw 521.
  • the mounting seat 523 is a pipe hoop structure.
  • the mounting seat 523 is clamped to a frame seat tube (not shown), and the mounting seat 523 is further provided with a wire tube seat 525.
  • the end of the wire tube 522 is inserted into the wire tube seat 525 in an interference manner, and the pull wire 520 penetrates the inside of the wire tube 522.
  • the cable in this example can also be driven by a motor.
  • the pull wire 520 overcomes the spring force of the torsion spring 519, pulls the link 513, rotates the link 513 about the pivot 518, drives the connecting member 531, and then drives the derailleur 530 to laterally displace the crank cover 501 to achieve speed change.
  • Figure 18 also shows a slightly different solution: 1.
  • One link is eliminated (510 in Figure 17).
  • one side of the connecting member 531a is slightly shorter and is provided with only one pivot hole; the connecting seat 503a is also no longer provided with a pivot hole for connecting a connecting rod (510 in FIG. 17).
  • the position of the pivot hole of the connecting seat 503a for pivotally connecting the connecting rod 513 is higher than the original, that is, the connecting rod 513a (the section from the connecting member 531a to the connecting seat 503a) is shorter than the connecting rod 512a.
  • the connecting seat (530; 530a) in this example may also be a rectangular tube.
  • the link mechanism in this case is similar to the push-down forward link structure commonly used in the prior art.
  • This example and Examples 3 and 4 show a scheme in which the actuating part includes a link mechanism. 3.
  • the cable in this example can also be driven by a motor.
  • This example differs from Embodiment 1 in that the actuating portion is different.
  • connection base 602 is tubular, the outer peripheral surface is engraved with external threads, and the inner cavity is non-circular (rectangular, six (Lateral, spline type), in this example, a hexagon is preferred.
  • the movable rod 607 is a hexagonal prism.
  • the movable rod 607 and the inner cavity of the connecting seat 602 are gap-fitted.
  • the movable rod 607 is inserted into the connecting seat 602 and can be reciprocated.
  • the upper part of the derailleur 603 is provided with a hole 605.
  • the cross section of the hole 605 is Non-circular, this example is preferably hexagonal.
  • the end 606 of the movable rod 607 is a hexagonal prism, the end 606 and the hole 605 are interference fit, and the end 606 is inserted into the hole 605 and fixed.
  • a hole 608 is provided at the axial center position of the other end of the movable rod 607.
  • the hydraulic piston includes a cylinder block 610.
  • the piston 611 is located in the middle of the cylinder block 610. Hydraulic pipes (612; 615) are connected to both ends of the cylinder block 610.
  • the piston 611 has a piston rod 611a, an end of the piston rod 611a and a hole 608. For an interference fit, the end of the piston rod 611a is inserted into the hole 608 and fixed.
  • One end of the sleeve 609 is provided with an internal thread and is screwed on the external thread of the connecting seat 602.
  • the sleeve 609 is sleeved on the outside of the piston rod 611a and the movable rod 607.
  • the other end of the sleeve 609 is fixedly connected with the cylinder 610 by screws 616.
  • the hydraulic pipe (612; 615) injects or extracts hydraulic fluid into the cylinder 610, respectively, and the piston 611 and the piston rod 611a are pushed, thereby driving the movable rod 607, and the movable rod 607 is axially displaced along the inner cavity of the connecting seat 602 , Drive the derailleur 603 lateral displacement.
  • This example differs from Embodiment 1 in that the actuating portion is different.
  • connection seat 731 is provided on the inner cover wall of the crank cover 701.
  • the connection seat 731 has a circular tube shape. Examples are preferably rectangular.
  • the derailleur 708 is located inside the crank cover 701.
  • the cross-sectional shape of the movable rod 717 is corresponding to the hole 733 and is a clearance fit.
  • the movable rod 717 is inserted into the hole 733 and can be reciprocated. (Or the movable lever 717 and the derailleur 708 are integrally manufactured).
  • the spring 716 is sleeved on the outside of the movable rod 717 and is located between the derailleur 708 and the inner wall of the crank cover 701.
  • the other end of the movable rod 717 protrudes from the connecting seat 731.
  • One end of the sleeve 730 has an internal thread.
  • the sleeve 730 is sleeved on the outside of the movable rod 717.
  • the internal thread of the sleeve 730 is screwed to the external thread of the connecting seat 731.
  • the other end of the sleeve 730 has a wire socket, and the end of the wire pipe 711 is inserted into the wire socket with interference.
  • a pull wire 710 penetrates the wire tube 711, and an end portion of the pull wire 710 is inserted into a hole at an end of the movable rod 717 and is fixedly connected to the movable rod 717 by means of bonding or screw pressing.
  • the pull wire 710 overcomes the spring force of the spring 716 and pulls the movable lever 717.
  • the movable lever 717 is limited by the hole 733 and slides along its axial direction, which drives the derailleur 708 to move laterally.
  • the cable in this example can also be driven by a motor.
  • This example and Example 6 show a scheme in which the actuating part includes a movable lever.
  • This example differs from Example 1 in that the crank cover is different.
  • the side projection shape of the bumps (803; 804) is a circular arc shape, and is arranged along the entire chain meshing section.
  • the solution 2 is also included: the inner wall of the crank plate is straight and the gap with the crank is less than the width of the chain.
  • Solution 3 is also included: a convex wall is protruded inwardly to form a convex portion (instead of a bump), and the gap between the convex portion and the side of the dental plate is less than the width of the chain.

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Abstract

A front derailleur, in particular, a front derailleur suitable for a variable speed bicycle. The front derailleur comprises a crankset cover (201), a derailleur, and actuating part. The crankset cover is configured to cover at least the upper part of a crankset; the crankset cover is fixedly connected to a bicycle frame; the derailleur is inside the crankset cover; the actuating part is connected between the crankset cover and the derailleur, and is used for supporting and actuating lateral displacement of the derailleur with respect to the crankset cover, to drive the derailleur to move a chain from an initial gear of the crankset to a target gear.

Description

一种前拨Forward dial 技术领域Technical field
本发明涉及一种自行车用变速装置，特别是一种前拨。The invention relates to a speed change device for a bicycle, in particular to a front dial.
背景技术Background technique
现有技术中，自行车的前拨(前拨链器)安装在车架座管。由于前拨的安装位置位于骑行者+自行车组合的重心下方，且具有相对充裕的空间，从不影响自行车的操纵性考虑，这里更适合安装重量较大的配件，例如电助力自行车的电池或/和电机。In the prior art, a front derailleur (front derailleur) of a bicycle is mounted on a frame seat tube. Because the front dial is installed under the center of gravity of the rider + bicycle combination and has ample space, it will not affect the handling of the bicycle. It is more suitable for installing heavy weight accessories, such as the battery of an electric bicycle or / And motor.
另一方面，由于位置的冲突，现有技术中，安装了前拨的自行车难以设置防护罩对牙盘和牙盘段链条进行防护，以保持牙盘与链条的清洁、避免骑行者裤脚被牙盘钩挂和/或油污。On the other hand, due to the conflict of positions, in the prior art, it is difficult to provide a protective cover for a bicycle equipped with a front dial to protect the chainring and the chainring of the chainring, so as to keep the chainring and the chain clean and to prevent the rider's pants from getting teeth Hooks and / or grease.
现有技术中，拨链器的其中一块拨链板的下端弯折以封闭拨链器下端的空隙，以防止链条脱出。由于其为不可拆卸结构，因而在维修或更换前拨的时候必须断开链条才能取下前拨。In the prior art, the lower end of one of the derailleur plates of the derailleur is bent to close the gap at the lower end of the derailleur to prevent the chain from coming out. Because it is a non-removable structure, the chain must be disconnected to remove the forward dial when repairing or replacing the forward dial.
发明内容Summary of the Invention
本发明的主要目的是提出一种前拨，具有该前拨的自行车不易油污骑行者的衣物。The main object of the present invention is to propose a front dial, and bicycles having the front dial are not prone to greasy clothes of riders.
为此，该前拨包括：牙盘罩、拨链器、致动部；牙盘罩构造为至少将牙盘的上部罩住；牙盘罩固定连接在车架的中部；拨链器位于牙盘罩的内部；致动部连接在牙盘罩与拨链器之间，用以支承并致动拨链器相对牙盘罩横向位移，以带动拨链器拨动链条由牙盘的初始档位移向目标档位。To this end, the front dial includes: a crank cover, a derailleur, and an actuating portion; the crank cover is configured to cover at least the upper portion of the crank; the crank cover is fixedly connected to the middle of the frame; The inside of the disc cover; the actuating part is connected between the crank cover and the derailleur, and is used to support and actuate the lateral displacement of the derailleur relative to the crank cover to drive the derailleur to move the chain from the initial position of the crank Shift to the target gear.
由于拨链器内置在牙盘罩中，即链条与牙盘被牙盘罩屏蔽，避免了油污骑行者衣物的问题。另外，牙盘罩的保护作用，减少了外界不良因素的干扰，因而提高了变速***的可靠性，降低了维护工作量。Since the derailleur is built in the crank cover, that is, the chain and the crank are shielded by the crank cover, the problem of greasy rider's clothing is avoided. In addition, the protective effect of the crank cover reduces the interference of undesirable external factors, thereby improving the reliability of the transmission system and reducing the maintenance workload.
拨链器的方案是：拨链器包括2块拨链板；拨链板的上端一体制造或固定连接在一起；拨链板与致动部固定连接或一体制造。The scheme of the derailleur is that the derailleur includes two derailleur plates; the upper end of the derailleur plate is integrally manufactured or fixedly connected together; the derailleur plate is fixedly connected or integrally manufactured with the actuating part.
由于本发明前拨的致动机构与拨链器与牙盘罩结合在一起，而牙盘罩会经常打开以检查或润滑牙盘与链条，假如在做此类工作时无需断开链条，会使该工作更便捷。于是本发明的一个次要目的是在拆卸前拨时，不必断开链条。Since the actuating mechanism of the front dial of the present invention is combined with the derailleur and the crank cover, and the crank cover is often opened to check or lubricate the crank and the chain, if it is not necessary to disconnect the chain when doing such work, it will Make the job easier. It is therefore a secondary object of the present invention to eliminate the need to disconnect the chain when dialing before disassembly.
为此，前拨还包括防脱链部；防脱链部能开闭的连接在拨链板的下端，用以敞开或遮闭拨链板下端之间的空隙。To this end, the front dial also includes an anti-off chain portion; the anti-off chain portion can be opened and closed connected to the lower end of the derailleur plate to open or close the gap between the lower end of the derailleur plate.
致动部的一个方案是：致动部包括导轨、滑块、偏力机构a和拉线a；导轨横向的固定连接在牙盘罩；滑块能往复位移的连接在导轨；滑块与拨链器固定连接或一体制造；偏力机构a连接至滑块以向滑块施加偏力；拉线a的端部连接至滑块，拉线a贯穿在线管a中或连接至电机a，以与偏力机构a共同作用使滑块位移。One scheme of the actuating part is: the actuating part includes a guide rail, a slider, a biasing mechanism a, and a pull wire a; the guide rail is fixedly connected laterally to the crank cover; the slider can be reciprocally connected to the guide rail; the slider and the derailleur The device is fixedly connected or integrally manufactured; the biasing mechanism a is connected to the slider to apply a biasing force to the slider; the end of the pulling wire a is connected to the slider, and the pulling wire a runs through the tube a or is connected to the motor a to connect with the biasing force. The mechanism a cooperates to displace the slider.
致动部的一个方案是：致动部包括连杆机构、拉线b、偏力机构b；连杆机构连接在牙盘罩与拨链器之间，用以支承并引导拨链器横向位移；偏力机构b连接至连杆机构以向连杆机构施加偏力；拉线b的端部连接至连杆机构，拉线b贯穿在线管b中或连接至电机b，以与偏力机构b共同作用使连杆机构动作。One scheme of the actuating part is: the actuating part includes a link mechanism, a pull wire b, and a biasing mechanism b; the link mechanism is connected between the crank cover and the derailleur to support and guide the lateral displacement of the derailleur; The biasing mechanism b is connected to the link mechanism to apply a biasing force to the link mechanism; the end of the pull wire b is connected to the link mechanism, and the pull wire b runs through the bobbin b or is connected to the motor b to work with the biasing mechanism b Move the link mechanism.
致动部的一个方案是：致动部包括活动杆；活动杆能沿其轴向往复位移的连接至牙盘罩；活动杆的一端与拨链器一体制造或固定连接；致动部还包括拉线机构或液压机构；拉线机构包括偏力机构c和拉线c；偏力机构c连接至活动杆以向活动杆施加偏力；拉线c的端部连接至活动杆，拉线c贯穿在线管c中或连接至电机c以与偏力机构c共同作用使活动杆沿其轴向位移；或液压机构包括缸体、活塞，缸体固定连接至牙盘罩；活塞的端部固定连接在活动杆以使活动杆沿其轴向位移。One scheme of the actuating part is: the actuating part includes a movable rod; the movable rod can be reciprocally displaced along the axial direction of the crank cover; one end of the movable rod is integrally manufactured or fixedly connected with the derailleur; the actuating portion further includes A wire drawing mechanism or a hydraulic mechanism; the wire drawing mechanism includes a biasing mechanism c and a wire c; the biasing mechanism c is connected to a movable rod to apply a biasing force to the movable rod; an end of the wire c is connected to the movable rod, and the wire c runs through the pipe c Or connected to the motor c to cooperate with the biasing mechanism c to move the movable rod along its axial direction; or the hydraulic mechanism includes a cylinder block and a piston, the cylinder block is fixedly connected to the crank cover; the end of the piston is fixedly connected to the movable rod to Displace the movable rod in its axial direction.
牙盘罩的一个方案是：牙盘罩包括罩体a和罩体b；牙盘罩的后部具有容纳链条通过的 开口；罩体a和罩体b沿牙盘的轴心线所在的平面，能拆卸的固定连接在一起。One solution of the crank cover is: the crank cover includes a cover body a and a cover body b; the rear portion of the crank cover has an opening for accommodating the chain; the cover body a and the cover body b are along the plane of the crank shaft axis , Removable fixed connection.
该方案采用了2个罩体组成基本全封闭的牙盘罩的方案，使得打开牙盘罩以对其内部机件进行检查维护更方便。This solution adopts a scheme in which two cover bodies are formed into a completely closed sprocket cover, which makes it easier to open the sprocket cover to inspect and maintain its internal parts.
牙盘罩的一个方案是：牙盘罩构造为后端开放的盒状，以使牙盘罩安装就位时，能容纳牙盘与链条通过；牙盘罩对应牙盘轴心的位置设有中轴孔；在牙盘罩的内侧罩壁设有贯通槽，贯通槽由牙盘罩的后端贯通至中轴孔，以使牙盘罩在安装时能容纳中轴通过。One solution of the crank cover is: the crank cover is configured in a box shape with an open rear end, so that when the crank cover is installed in place, it can accommodate the crank and the chain; the position of the crank cover corresponding to the crank axis is provided A central shaft hole; a through groove is provided on the inner cover wall of the crank cover, and the through groove penetrates from the rear end of the crank cover to the central shaft hole, so that the crank cover can accommodate the central shaft when it is installed.
该方案采用了基本全封闭的牙盘罩，采用本方案的牙盘罩可以方便的由后至前取出，便于对其内部机件进行检查和维护。This solution adopts a substantially fully-enclosed crank cover, which can be easily removed from the back to the front, which is convenient for the inspection and maintenance of its internal parts.
本发明的一个次要目的是，防止链条卡在牙盘罩与牙盘的间隙中。A secondary object of the present invention is to prevent the chain from getting caught in the gap between the crank cover and the crank.
为此，在链条啮合段的侧向投影位置，牙盘罩的侧壁与牙盘侧面的间隙＜链条的宽度；或牙盘罩包括至少1个凸块；凸块固定连接在牙盘罩的侧壁、链条啮合段的侧向投影位置；凸块与牙盘侧面的间隙＜链条的宽度。For this reason, in the lateral projection position of the chain engaging section, the gap between the side wall of the crank cover and the side of the crank <the width of the chain; or the crank cover includes at least one bump; the bump is fixedly connected to the crank cover. Side projection position of the side wall and chain meshing segment; the gap between the bump and the side of the chainring <the width of the chain.
本发明的一个主要目的是提出一种自行车，该自行车包括本发明前拨的所有优点。A main object of the present invention is to propose a bicycle that includes all the advantages of the front dial of the present invention.
为此，该自行车包括权利要求1至9中任一项权利要求所述的前拨。To this end, the bicycle includes a front dial according to any one of claims 1 to 9.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
此处的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。下面接合附图对本发明的具体说明方式作进一步的详细说明。The drawings herein are used to provide a further understanding of the present invention and constitute a part of the present application. The schematic embodiments of the present invention and the description thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. The detailed description of the present invention will be described in detail below with reference to the accompanying drawings.
图1、实施例1前拨的轴测图。Figure 1. Axonometric view of the forward dial of Example 1.
图2、实施例1前拨的俯视图。Fig. 2 is a plan view of a front dial of the first embodiment.
图3、实施例1前拨的后视图。Fig. 3 is a rear view of a front dial of the first embodiment.
图4、实施例1前拨的分解图。FIG. 4 is an exploded view of a forward dial in Embodiment 1. FIG.
图5、实施例1牙盘罩与车架的连接方案的示意图。FIG. 5 is a schematic diagram of a connection scheme between a crankset cover and a frame in Embodiment 1. FIG.
图6、实施例1以电机为动力源的前拨的示意图。FIG. 6 is a schematic diagram of a forward dial using a motor as a power source in Embodiment 1. FIG.
图7、实施例1牙盘罩的不同方案的示意图。FIG. 7 is a schematic diagram of different schemes of the crankset cover of Embodiment 1. FIG.
图8、实施例1牙盘罩与车架的连接方案的示意图。FIG. 8 is a schematic diagram of a connection scheme between a crankset cover and a frame in Embodiment 1. FIG.
图9、实施例2前拨的示意图。FIG. 9 is a schematic diagram of a forward dial in Embodiment 2. FIG.
图10、实施例2前拨的分解图。FIG. 10 is an exploded view of a forward dial in Embodiment 2. FIG.
图11、实施例3前拨的示意图。FIG. 11 is a schematic diagram of a forward dial in Embodiment 3. FIG.
图12、实施例3前拨的分解图。FIG. 12 is an exploded view of a forward dial in Embodiment 3. FIG.
图13、实施例3前拨的分解图，为显示内部，牙盘罩被部分剖开。FIG. 13 is an exploded view of the front dial of the third embodiment, in order to show the inside, the crank cover is partially cut away.
图14、实施例4前拨的示意图，为显示内部，牙盘罩被部分剖开。FIG. 14 is a schematic view of a forward dial of Embodiment 4, in order to show the inside, the crank cover is partially cut away.
图15、实施例4前拨的分解图。FIG. 15 is an exploded view of a forward dial in Embodiment 4. FIG.
图16、实施例5前拨的轴测图。FIG. 16 is a perspective view of a forward dial of Embodiment 5. FIG.
图17、实施例5前拨的分解图。FIG. 17 is an exploded view of a forward dial in Embodiment 5. FIG.
图18、实施例5另一种连杆方案的示意图。FIG. 18 is a schematic diagram of another link scheme of Embodiment 5. FIG.
图19、实施例6前拨的轴测图。FIG. 19 is an isometric view of a forward dial of Embodiment 6. FIG.
图20、实施例6前拨的分解图。Fig. 20 is an exploded view of a forward dial in Embodiment 6.
图21、实施例7前拨的轴测图。Figure 21, Axonometric view of the forward dial of Example 7.
图22、实施例7前拨的分解图。FIG. 22 is an exploded view of a forward dial in Embodiment 7. FIG.
图23、实施例8设有凸块和凸块的牙盘罩的俯视和透视图。23 and 8 are a plan view and a perspective view of a crank cover provided with a bump and a bump according to the eighth embodiment.
图24、实施例8设有凸块和凸块的牙盘罩的侧视和透视图。FIG. 24 and Embodiment 8 are side and perspective views of a crank cover provided with a bump and a bump.
具体实施方式detailed description
为简洁篇幅，本说明以传动***位于车架右侧为例进行说明，本发明同样包括传动***位于车架左侧的方案。本说明以自行车的前进方向为前；以自行车的左右方向为横向。For the sake of brevity, this description uses the transmission system to be located on the right side of the frame as an example. The present invention also includes a scheme in which the transmission system is located on the left side of the frame. In this description, the forward direction of the bicycle is taken as the front direction; the horizontal direction of the bicycle is taken as the lateral direction.
实施例1Example 1
如图1至图5所示，牙盘罩包括罩体a101和罩体b102，罩体a101和罩体b102可看作整体的牙盘罩沿牙盘的轴心线所在的平面剖开而成，二者能拆卸的连接在一起。罩体a101和罩体b102的后端具有容纳链条出入的开口。罩体a101的顶部罩壁设有供滑块107贯穿的开口103。牙盘罩对应中轴的位置设有轴孔105。连接座(121；122)为半环状，连接座(121；122)以(至少)3枚螺钉125固定连接在罩体a101和罩体b102。连接座(121；122)拼接成环状并卡在车架五通处(未示出)，再以2枚螺钉123固定连接。这样就使牙盘罩固定连接在车架的中部。注：1、牙盘的轴心线所在的平面优选为水平。2、罩体a和罩体b能拆卸的固定连接在一起包括多种方式，例如：2.1、罩体a的下部套在罩体b的上部，并以螺钉贯穿罩体a与罩体b的连接处。2.2、罩体a的下部沿周向设有若干卡笋，罩体b的上部沿周向设有若干卡笋槽，罩体a扣合在罩体b的上部，并使卡笋卡合入卡笋槽内。As shown in FIG. 1 to FIG. 5, the crank cover includes a cover body a101 and a cover body b102, and the cover body a101 and the cover body b102 can be regarded as a whole. The dental plate cover is cut along a plane where the axis line of the dental plate is located. , The two can be disassembled and connected together. The rear end of the cover body a101 and the cover body b102 has an opening for accommodating the access of the chain. The top cover wall of the cover body a101 is provided with an opening 103 through which the slider 107 penetrates. The crankshaft cover is provided with a shaft hole 105 at a position corresponding to the central shaft. The connection bases (121; 122) are semi-circular, and the connection bases (121; 122) are fixedly connected to the cover body a101 and the cover body b102 with (at least) three screws 125. The connecting seats (121; 122) are spliced into a ring shape and are clamped at the five-way of the frame (not shown), and then fixedly connected by two screws 123. In this way, the crank cover is fixedly connected to the middle of the frame. Note: 1. The plane on which the axis line of the crank is located is preferably horizontal. 2. The cover body a and the cover body b can be detachably and fixedly connected together in various ways, for example: 2.1, the lower part of the cover body a is sleeved on the upper part of the cover body b, and the screws pass through the cover body a and the cover body b. Junction. 2.2. The lower part of the cover body a is provided with a plurality of bamboo shoots along the circumferential direction, and the upper part of the cover body b is provided with a plurality of bamboo shoot slots along the circumferential direction. The cover a is fastened to the upper part of the cover b and the card shoots are snapped into the card shoot groove .
致动部包括导轨106、滑块107、拉线110、弹簧111(偏力机构)和线管112。2个支架(115；116)分别以螺钉固定连接在开口103左右两端的罩壁。导轨106的横截面为非圆形(例如矩形、三角形、六边形等)，本例优选为矩形。导轨106的两端分别以1枚螺钉106a固定连接在支架(115；116)，滑块107具有与导轨106的横截面形状相应且为间隙配合的贯通孔107a。导轨106贯穿贯通孔107a。滑块107设有贯通的拉线孔，拉线110贯穿拉线孔，拉线110的端部直径大于拉线孔的直径。(将拉线固定连接在滑块，也可采用本领域常见的拉线固定方案：拉线穿过锚定螺丝上的贯通孔并缠绕锚定螺丝一圈，锚定螺丝旋紧在滑块的螺孔中，锚定螺丝旋紧的同时紧压拉线使之固定)。弹簧111套在拉线110的外部，弹簧111的一端紧贴在滑块107的侧面。弹簧111的另一端紧贴在支架115的侧面。支架115的外侧设有管状的线管座115a，线管112的端部过盈的***线管座115a。拉线110贯穿线管112。The actuating part includes a guide rail 106, a slider 107, a pull wire 110, a spring 111 (biasing mechanism), and a wire tube 112. Two brackets (115; 116) are fixedly connected to the cover walls at the left and right ends of the opening 103, respectively. The cross-section of the guide rail 106 is non-circular (for example, rectangular, triangular, hexagonal, etc.), and is preferably rectangular in this example. The two ends of the guide rail 106 are fixedly connected to the bracket (115; 116) with one screw 106a, and the slider 107 has a through hole 107a corresponding to the cross-sectional shape of the guide rail 106 and fitted with a clearance. The guide rail 106 passes through the through hole 107a. The slider 107 is provided with a through wire hole, and the wire 110 penetrates the wire hole. The diameter of the end of the wire 110 is larger than the diameter of the wire hole. (The pull wire is fixedly connected to the slider, and a common pull wire fixing scheme in the field can also be adopted: the pull wire passes through the through hole on the anchor screw and winds the anchor screw once, and the anchor screw is screwed into the screw hole of the slider , While tightening the anchor screw, press the pull wire to fix it). The spring 111 is sleeved on the outside of the pull wire 110, and one end of the spring 111 is closely attached to the side of the slider 107. The other end of the spring 111 is in close contact with the side of the bracket 115. A tubular wire socket 115a is provided on the outer side of the bracket 115, and the end of the wire pipe 112 is inserted into the wire socket 115a with an interference. The pull wire 110 runs through the wire tube 112.
拨链器与现有技术类同，其包括2块弧形的拨链板(108；109)。拨链板(108；109)分别位于链条的两侧。拨链板(108；109)的端部一体制造(或采用焊接、螺钉连接等方式固定连接)在一起。拨链器与滑块107一体制造(或采用焊接、粘接、螺钉连接等方式固定连接)在一起。The derailleur is similar to the prior art and includes two curved derailleur plates (108; 109). The derailleur plates (108; 109) are located on both sides of the chain. The ends of the derailleur plate (108; 109) are manufactured integrally (or fixedly connected by welding, screwing, etc.) together. The derailleur and the slider 107 are integrally manufactured (or fixedly connected by welding, bonding, screwing, etc.).
为了防止链条在激烈骑行时脱出拨链器，防掉链器包括螺栓168，螺栓168旋紧在拨链板(108；109)的下端的螺孔168a中。In order to prevent the chain from falling out of the derailleur during severe riding, the anti-dropout includes bolts 168, which are screwed into screw holes 168a at the lower end of the derailleur plate (108; 109).
下面以牙盘的外盘(初始档位)向内盘(目标档位)变速为例进行说明。变速时，骑行者通过控制手柄拉动拉线110，拉线110的拉力克服弹簧111的弹力，使滑块107沿导轨106位移，滑块107带动拨链板(108；109)横向位移，拨链板(108；109)推动链条由牙盘150的(大盘)初始档位移向目标档位(小盘)。反之，放松拉线110，拨链板(108；109)在弹簧111的簧力作用下推动链条由小盘移向大盘。The following description uses the outer disc (initial gear) of the chainring to shift to the inner disc (target gear) as an example for description. When shifting, the rider pulls the pull wire 110 through the control handle. The pulling force of the pull wire 110 overcomes the elastic force of the spring 111 and moves the slider 107 along the guide rail 106. The slider 107 drives the derailleur plate (108; 109) to move laterally. 108; 109) Push the chain from the initial position of the chainring 150 (large disk) to the target position (small disk). On the contrary, when the pull wire 110 is relaxed, the derailleur plate (108; 109) pushes the chain from the small plate to the large plate under the action of the spring force of the spring 111.
本例还具有快速拆装的能力以便于清洁链条或排除故障。松开螺钉123，就能使罩体a101和罩体b102从车架上卸下，再取下螺栓168，使拨链板(108；109)的下部敞开，就可以在不拆卸链条的情况下将拨链板(108；109)、致动部和罩体a101一起拿下。This example also has the ability to quickly disassemble to facilitate cleaning the chain or troubleshooting. Loosen the screws 123, the cover a101 and cover b102 can be removed from the frame, and then remove the bolt 168, so that the lower part of the derailleur plate (108; 109) is opened, and the chain can be removed without removing the chain. Remove the derailleur plate (108; 109), the actuator and the cover a101 together.
本例还包括多种衍生方案：1、由于拨链器与滑块为一体制造或固定连接，拉线的端部还可同样的固定连接至拨链器。2、由于致动部与拨链器均设置在牙盘的上部，牙盘罩仅包括罩体a即可，即牙盘罩只要罩在牙盘的上部即可。3、拉线以电机为动力源，例如图6所示：电机160以螺栓固定安装在罩体a101的顶部。电机160的输出轴固定连接了1个绕线轴161，拉线162的端部固定连接在绕线轴161，拉线162缠绕在绕线轴161。变速时，控制装置(非本发明，未示出)向电机160发送动作电流，电机160转动，带动绕线轴161收紧或放出拉线162。4、牙盘的轴心线所在的平面与水平面的夹角包括任意角度，例如图7示出了罩体a170 和罩体b171沿竖向的平面能拆卸的固定连接的方案。该方案中，致动部设置在罩体b171。为了更好的密封牙盘，在罩体b171后端(牙盘罩后端)的中部以一体的罩壁172(或能拆装的挡板等零件)封闭，只留下上、下2个链条开口(173；174)。5、除了前述与车架的连接方案外。图8示出了牙盘罩与车架的另一连接方案：连接座173采用了管箍的结构固定连接在车架的座管(未示出)。牙盘罩175设有吊耳176，连接座173和吊耳176以至少2枚螺钉177固定连接在一起。6、偏力机构具有多种方案，例如：6.1、以簧片替代上述方案中的弹簧，簧片的一端固定连接在牙盘罩、滑块前方或后方的位置，簧片的另一端固定连接在滑块以向滑块施加偏力。6.2、由于滑块的行程较短，还可采用以2个同极相对的磁环替代弹簧，磁环套在导轨或拉线的外部。以同级相斥的磁力替代弹簧的弹力。后续实施例中，技术人员可酌情采用各种偏力机构的方案。This example also includes a variety of derivative solutions: 1. Since the derailleur and the slider are integrally manufactured or fixedly connected, the end of the pull wire can also be fixedly connected to the derailleur. 2. Since the actuating part and the derailleur are both provided on the upper part of the crankset, the crankset cover only needs to include the cover body a, that is, the crankset cover only needs to cover the upper part of the crankset. 3. The pull wire uses a motor as a power source, for example, as shown in FIG. 6: the motor 160 is fixed on the top of the cover a101 by bolts. An output shaft of the motor 160 is fixedly connected to a winding shaft 161, an end portion of the pulling wire 162 is fixedly connected to the winding shaft 161, and the pulling wire 162 is wound around the winding shaft 161. When shifting speed, the control device (not the present invention, not shown) sends an operating current to the motor 160, and the motor 160 rotates, which drives the winding shaft 161 to tighten or release the pull wire 162. 4. The plane of the axis of the crankshaft and the horizontal plane The included angle includes any angle. For example, FIG. 7 shows a scheme of the fixed connection that the cover a170 and the cover b171 can be removed along a vertical plane. In this solution, the actuating portion is provided on the cover body b171. In order to better seal the crankset, the middle part of the rear end of the cover body b171 (the rear end of the crankset cover) is closed with an integrated cover wall 172 (or a removable baffle and other parts), leaving only the upper and lower 2 Chain opening (173; 174). 5. In addition to the aforementioned connection scheme with the frame. FIG. 8 shows another connection scheme between the crank cover and the frame: the connection seat 173 is fixedly connected to the seat tube (not shown) of the frame using a structure of a pipe hoop. The crank cover 175 is provided with a lifting ear 176, and the connecting seat 173 and the lifting ear 176 are fixedly connected together by at least two screws 177. 6. The biasing mechanism has a variety of schemes, such as: 6.1. Replace the spring in the above scheme with a spring, one end of the spring is fixedly connected to the front or rear position of the crank cover and the slider, and the other end of the spring is fixedly connected On the slider to apply a biasing force to the slider. 6.2. Due to the short stroke of the slider, springs can also be replaced by two magnetic poles with opposite poles. The magnetic rings are placed on the outside of the guide rail or the cable. Replace the spring force of the spring with the repulsive magnetic force of the same level. In the subsequent embodiments, the technician may adopt various schemes of the biasing mechanism as appropriate.
实施例2Example 2
本例与实施例1的不同之处在于，牙盘罩、致动部不同。This example differs from Example 1 in that the crank cover and the actuating portion are different.
如图9、图10所示，牙盘罩201为后端开放的盒状，这样就能使牙盘罩在由前至后***安装位时，容纳牙盘与链条通过。在对应中轴的位置，牙盘罩201设有中轴孔，由中轴孔至牙盘罩的后部，在牙盘罩201内侧的罩壁设有贯通槽201b，其目的是使牙盘罩201在安装时容纳中轴通过。在车架202中部的五通处，设有至少2个吊耳202a，螺钉202b穿过吊耳202a的贯通孔，旋紧在设于牙盘罩201内侧罩壁的螺孔201a中。这样就将牙盘罩201固定连接在车架202的中部。As shown in FIGS. 9 and 10, the crankset cover 201 has a box shape with an open rear end, so that the crankset cover can accommodate a crankset and a chain when it is inserted into the installation position from front to back. At the position corresponding to the central axis, the crankshaft cover 201 is provided with a central shaft hole from the central shaft hole to the rear of the crankshaft cover. A through groove 201b is provided on the cover wall inside the crankshaft cover 201, the purpose of which is to make the crankshaft The cover 201 accommodates the bottom bracket when passing. At the five-way position in the middle of the frame 202, at least two lifting ears 202a are provided. The screws 202b pass through the through holes of the lifting ears 202a and are screwed into the screw holes 201a provided on the inner cover wall of the crank cover 201. In this way, the crank cover 201 is fixedly connected to the middle of the frame 202.
本例中的致动部可大致看作将例1的致动部内置在牙盘罩201的内部：牙盘罩201的两侧罩壁设有贯通的孔201c。孔201c与导轨203为间隙配合。导轨203***孔201c，螺钉203a贯穿导轨203外端的连接板并旋紧在牙盘罩201外侧罩壁的螺孔中以固定导轨203。滑块209能往复滑动的套在导轨203，导链器210一体制造(或焊接、粘接、螺钉固定)在滑块209的下部。弹簧208套在导轨203的外部，弹簧208设置在滑块209与牙盘罩201内侧罩壁之间。拉线206的端部固定在滑块209，线管207的端部与设在牙盘罩201内侧罩壁的连接座205固定(螺纹)连接。The actuating part in this example can be roughly regarded as the actuating part of Example 1 being built in the crank cover 201: the cover wall on both sides of the crank cover 201 is provided with through holes 201 c. The hole 201c and the guide rail 203 are clearance fit. The guide rail 203 is inserted into the hole 201c, and the screw 203a penetrates the connecting plate at the outer end of the guide rail 203 and is screwed into a screw hole on the outer cover wall of the crank cover 201 to fix the guide rail 203. The slider 209 is sleeved on the guide rail 203 and can be reciprocally slid. The chain guide 210 is integrally manufactured (or welded, bonded, and screwed) on the lower part of the slider 209. The spring 208 is sleeved outside the guide rail 203, and the spring 208 is disposed between the slider 209 and the inner cover wall of the crank cover 201. An end portion of the pull wire 206 is fixed to the slider 209, and an end portion of the wire tube 207 is fixedly (threaded) connected to a connection seat 205 provided on the inner cover wall of the crank cover 201.
注：参考前例，本例中的拉线同样也能采用电机驱动。Note: Referring to the previous example, the cable in this example can also be driven by a motor.
本例与例1示出了致动部包括导轨与滑块的方案。This example and Example 1 show a scheme in which the actuator includes a guide rail and a slider.
实施例3Example 3
本例与实施例1的不同之处在于，致动部不同。This example differs from Embodiment 1 in that the actuating portion is different.
如图11、图12所示，致动部包括平行的连杆(312；313)、连接体319、拉线310、线管311、连接线315、弹簧316、弹簧座317。拨链板(308；309)的上端一体制造(或采用焊接、粘接等方式固定连接)在连接体319。连接体319的上部具有2根枢轴331，连杆(312；313)的后端分别具有孔，枢轴331间隙配合的贯穿连杆(312；313)后端的孔，2个卡环335分别安装在枢轴331端部的卡槽内。2根枢轴330贯穿牙盘罩301的上部罩壁，连杆(312；313)的前端具有孔，枢轴330间隙配合的贯穿连杆(312；313)前端的孔，2个卡环333分别安装在枢轴330端部的卡槽内。连接体319的上部设有拉线座332.As shown in FIGS. 11 and 12, the actuating part includes a parallel link (312; 313), a connecting body 319, a pull wire 310, a wire tube 311, a connecting wire 315, a spring 316, and a spring seat 317. The upper end of the derailleur plate (308; 309) is integrally manufactured (or fixedly connected by welding, bonding, etc.) on the connecting body 319. The upper part of the connecting body 319 has two pivot shafts 331, and the rear ends of the connecting rods (312; 313) have holes, respectively. The pivot shafts 331 are clearance-fitted and penetrate the holes at the rear ends of the connecting rods (312; 313). Two snap rings 335 are respectively Mounted in the slot at the end of the pivot 331. Two pivots 330 penetrate through the upper cover wall of the crank cover 301, the front end of the connecting rod (312; 313) has a hole, the pivot shaft 330 fits through the hole at the front end of the connecting rod (312; 313), and two snap rings 333 Mounted in the slot at the end of the pivot 330, respectively. The upper part of the connecting body 319 is provided with a wire drawing seat 332.
线管311的端部固定连接在设于牙盘罩301顶部的线管座351内。拉线310贯穿线管311，拉线310的端部固定连接在拉线杆332。拉线杆332一体制造在连接体319的顶部。弹簧座317以螺钉355固定连接在牙盘罩301的顶部。弹簧座317为管状(为了清楚示出其内部构造，图中弹簧座317的上部被剖开)。弹簧316放置在弹簧座317内，弹簧316一端的端盖316a紧贴弹簧座317的内端壁。连接线315贯穿弹簧座317的端部、弹簧316的端盖316a、弹簧316后再固定连接在弹簧316的另一端的端盖316b。连接线315的另一端穿过设于牙盘罩301顶部的接线座352，再固定连接在拉线杆332，以使弹簧316的簧力最终作用于拨链板 (308；309)。An end of the wire tube 311 is fixedly connected to a wire tube base 351 provided on the top of the crank cover 301. The pull wire 310 passes through the wire tube 311, and the end of the pull wire 310 is fixedly connected to the pull wire rod 332. The pull rod 332 is integrally manufactured on the top of the connecting body 319. The spring seat 317 is fixedly connected to the top of the crank cover 301 with a screw 355. The spring seat 317 is tubular (in order to clearly show its internal structure, the upper part of the spring seat 317 is cut away in the figure). The spring 316 is placed in the spring seat 317, and an end cover 316a at one end of the spring 316 abuts the inner end wall of the spring seat 317. The connecting wire 315 penetrates the end of the spring seat 317, the end cover 316a of the spring 316, and the spring 316, and then is fixedly connected to the end cover 316b of the other end of the spring 316. The other end of the connecting wire 315 passes through the terminal block 352 provided on the top of the crank cover 301, and is fixedly connected to the pull rod 332, so that the spring force of the spring 316 finally acts on the derailleur plate (308; 309).
图13示出了本类型致动部内置在牙盘罩内的方案。连杆(312；313)位于牙盘罩301的内部。牙盘罩301的顶部具有2个枢轴孔301a；2枚螺杆361分别间隙的贯穿枢轴孔301a再旋紧在连杆(312；313)端部的螺孔中。拨链板(308；309)的一端一体制造在连接体365，连接体365具有2个枢轴孔；2枚螺杆362分别间隙的贯穿设于连杆(312；313)另一端的枢轴孔再旋紧在连接体365的螺孔中。拉线310的端部固定连接在连接体365，弹簧360的一端压迫在连接体365，另一端压迫在牙盘罩301的内壁。线管311的端部螺接在设于牙盘罩301侧壁的线管座(未示出)。FIG. 13 shows a scheme in which an actuator of this type is built in a crank cover. The connecting rod (312; 313) is located inside the crank cover 301. The top of the crank cover 301 has two pivot holes 301a; the two pivot holes 301a of the two screws 361 are respectively screwed into the screw holes at the ends of the connecting rods (312; 313). One end of the derailleur plate (308; 309) is integrally manufactured in the connecting body 365, and the connecting body 365 has 2 pivot holes; the two screws 362 pass through the pivot holes provided at the other end of the connecting rod (312; 313) with a gap respectively. Then screw it into the screw hole of the connecting body 365. The end of the pull wire 310 is fixedly connected to the connecting body 365, one end of the spring 360 is pressed against the connecting body 365, and the other end is pressed against the inner wall of the crank cover 301. An end of the wire tube 311 is screwed to a wire tube base (not shown) provided on a side wall of the crank cover 301.
变速时，拉线310克服弹簧(316或365)的簧力，使连接体(319或365)在连杆(312；313)的限定作用下横向位移，从而带动拨链板(308；309)以实现变速。During shifting, the pull wire 310 overcomes the spring force of the spring (316 or 365), and causes the connecting body (319 or 365) to laterally move under the limitation of the connecting rod (312; 313), thereby driving the derailleur plate (308; 309) to Achieve variable speed.
注：参考前例，本例中的拉线同样也能采用电机驱动。Note: Referring to the previous example, the cable in this example can also be driven by a motor.
实施例4Example 4
本例与实施例1的不同之处在于，致动部不同。This example differs from Embodiment 1 in that the actuating portion is different.
如图14、图15所示，牙盘罩401顶部的罩壁设有2块前后布置且竖直向下的耳板401a和401b。耳板(401a；401b)两端各设有1个枢轴孔。4根连杆(422a；422b；422c；422d)的上下端均设有枢轴孔。连杆(422a；422b；422c；422d)上端的枢轴孔与耳板(401a；401b)两端的枢轴孔一一对齐。2根枢轴421分别贯穿耳板(401a；401b)上的枢轴孔和连杆(422a；422b；422c；422d)上端的枢轴孔，枢轴421的一端设有轴帽，另一端设有卡槽和卡环，这样就使连杆(422a；422b；422c；422d)的上端枢接在耳板(401a；401b)。As shown in FIGS. 14 and 15, the cover wall on the top of the crank cover 401 is provided with two ear plates 401 a and 401 b which are arranged forward and backward and vertically downward. Each end of the ear plate (401a; 401b) is provided with a pivot hole. The upper and lower ends of the four links (422a; 422b; 422c; 422d) are provided with pivot holes. The pivot holes at the upper end of the connecting rod (422a; 422b; 422c; 422d) are aligned with the pivot holes at both ends of the ear plate (401a; 401b). Two pivots 421 penetrate the pivot hole on the ear plate (401a; 401b) and the pivot hole at the upper end of the connecting rod (422a; 422b; 422c; 422d) respectively. One end of the pivot 421 is provided with a shaft cap, and the other end is provided with There are snap grooves and snap rings, so that the upper end of the connecting rod (422a; 422b; 422c; 422d) is pivotally connected to the ear plate (401a; 401b).
拨链板(408；409)的上部制造为一体，且设有2个前后布置的吊耳420，吊耳420的2端均设有枢轴孔。连杆(422a；422b；422c；422d)下端的枢轴孔与吊耳420两端的枢轴孔一一对齐。2根枢轴423分别贯穿吊耳420两端的枢轴孔和连杆(422a；422b；422c；422d)下端的枢轴孔，枢轴423的一端设有轴帽，另一端设有卡槽和卡环，这样就使连杆(422a；422b；422c；422d)的下端枢接在拨链板(408；409)的上部。The upper part of the derailleur plate (408; 409) is manufactured as a whole, and is provided with two front and rear lifting eyes 420. Both ends of the lifting eyes 420 are provided with pivot holes. The pivot holes at the lower ends of the connecting rods (422a; 422b; 422c; 422d) are aligned with the pivot holes at both ends of the lifting ear 420. Two pivots 423 penetrate the pivot holes at both ends of the lifting lug 420 and the pivot holes at the lower ends of the connecting rods (422a; 422b; 422c; 422d). One end of the pivot 423 is provided with a shaft cap, and the other end is provided with a slot and a The snap ring, so that the lower end of the connecting rod (422a; 422b; 422c; 422d) is pivotally connected to the upper part of the derailleur plate (408; 409).
偏转弹簧416套在1根枢轴421上。弹簧416的一端卡在连杆422a，另一端卡在牙盘罩401的内壁。拉线钩413固定连接(粘接、焊接等)或一体制造在连杆422d，拉线410的端部固定连接在拉线钩413。牙盘罩401的外壁设有线管座(未示出)，线管411过盈***线管座。变速时，拉线410克服弹簧416的簧力拉动连杆422d，连杆机构带动拨链板(408；409)横向位移。A deflection spring 416 is sleeved on a pivot 421. One end of the spring 416 is caught on the connecting rod 422a, and the other end is caught on the inner wall of the crank cover 401. The wire hook 413 is fixedly connected (bonded, welded, etc.) or integrally manufactured on the connecting rod 422d, and the end of the wire 410 is fixedly connected to the wire hook 413. The outer wall of the crank cover 401 is provided with a wire socket (not shown), and the wire pipe 411 is inserted into the wire socket with interference. During shifting, the pull wire 410 pulls the link 422d against the spring force of the spring 416, and the link mechanism drives the derailleur plate (408; 409) to move laterally.
本方案还示出了另一种防掉链器。拨链板(408；409)的下部设有贯通孔460，贯通孔460为矩形孔。卡笋461的前部设有2个簧片，簧片的端部设有倒钩，使卡笋461***贯通孔460，簧片的倒钩使卡笋461固定在贯通孔460中。如要取出卡笋461，对向按压簧片，使簧片的倒钩由拨链板408侧面解脱，即可退出卡笋461。This solution also shows another anti-dropout device. The lower part of the derailleur plate (408; 409) is provided with a through hole 460, and the through hole 460 is a rectangular hole. The front part of the bamboo shoot 461 is provided with 2 reeds, and the end of the spring leaf is provided with a barb, so that the bamboo shoot 461 is inserted into the through-hole 460, and the barb of the spring leaf fixes the bamboo shoot 461 in the through-hole 460. To remove the bamboo shoots 461, press the reeds in the opposite direction to release the barbs of the springs from the side of the derailleur plate 408 to exit the bamboo shoots 461.
现有技术中，防掉链器的结构多种多样，例如：1、防掉链器还包括插销，插销贯穿2块拨链板的下端，再以螺钉固定或过盈配合等方式固定连接在拨链板端部的销孔中。2、防掉链器包括档板，档板的一端枢接在一块拨链板的下端；转动挡板至封堵拨链板之间的间隙，挡板的另一端以螺钉固定或卡扣固定等方式固定连接在另一块拨链板的下端。In the prior art, the structure of the anti-dropout device is various, for example: 1. The anti-dropout device further includes a latch pin, which penetrates the lower end of the two derailleur plates, and is fixedly connected by means of screw fixing or interference fit. Into the pin hole at the end of the derailleur plate. 2. The anti-dropout device includes a baffle plate. One end of the baffle plate is pivotally connected to the lower end of a derailleur plate. The baffle is rotated to block the gap between the derailleur plates. It is fixedly connected to the lower end of another derailleur plate by other methods.
注：1、本案的连杆机构实际上与现有技术中常见的上摆式前拨的连杆机构类同。2、参考前例，本例中的拉线同样也能采用电机驱动。Note: 1. The link mechanism in this case is actually similar to the link mechanism of the swing-up forward dial commonly used in the prior art. 2. Referring to the previous example, the cable in this example can also be driven by a motor.
实施例5Example 5
本例与实施例1的不同之处在于，致动部不同。This example differs from Embodiment 1 in that the actuating portion is different.
如图16、图17所示，牙盘罩501的内侧罩壁设有开口502和连接座503。连接座503的横截面为U型，其两侧壁各设有2个枢轴孔。连杆(510；511；512；513)的上下端均设有 枢轴孔。连杆(510；511；512；513)下端的枢轴孔与连接座503的枢轴孔一一对齐并以枢轴(517；518)枢接在一起。连接件531为U型的杆件，其两侧部分各设有2个枢轴孔，连接件531的中部穿过开口502并以2枚螺钉532与拨链器530固定连接在一起。连杆(510；511；512；513)上端的枢轴孔与连接件531的枢轴孔一一对齐并以枢轴(515；516)枢接在一起。As shown in FIGS. 16 and 17, an inner cover wall of the crank cover 501 is provided with an opening 502 and a connection seat 503. The cross section of the connecting base 503 is U-shaped, and two pivot holes are provided on each of two side walls thereof. The upper and lower ends of the connecting rods (510; 511; 512; 513) are provided with pivot holes. The pivot hole at the lower end of the connecting rod (510; 511; 512; 513) is aligned with the pivot hole of the connecting seat 503 one by one and is pivotally connected together by a pivot (517; 518). The connecting member 531 is a U-shaped rod member, and two pivot holes are provided on both sides of the connecting member 531. The middle portion of the connecting member 531 passes through the opening 502 and is fixedly connected with the derailleur 530 by two screws 532. The pivot hole at the upper end of the connecting rod (510; 511; 512; 513) is aligned with the pivot hole of the connecting member 531 one by one and is pivotally connected together by a pivot (515; 516).
扭转弹簧519套在枢轴517的中段，弹簧519的一端卡在连杆512中部的孔中。弹簧519的另一端抵压在连接座503。连杆513与其他连杆(510；511；512)不同，连杆513为L型，其下部设有螺孔515，螺钉521具有拉线孔，拉线502贯穿拉线孔，螺钉521旋紧在螺孔515并将拉线520夹紧在连杆513与螺钉521的端帽之间。The torsion spring 519 is sleeved in the middle section of the pivot 517, and one end of the spring 519 is caught in a hole in the middle of the connecting rod 512. The other end of the spring 519 is pressed against the connecting seat 503. The connecting rod 513 is different from other connecting rods (510; 511; 512). The connecting rod 513 is L-shaped, and the lower part is provided with a screw hole 515. The screw 521 has a wire drawing hole. The wire 502 passes through the wire drawing hole. The screw 521 is screwed in the screw hole. 515 and clamp the pull wire 520 between the connecting rod 513 and the end cap of the screw 521.
安装座523为管箍结构。安装座523夹紧在车架座管(未示出)，安装座523还设有线管座525，线管522的端部过盈的***线管座525，拉线520贯穿在线管522的内部。注：参考图6，本例中的拉线同样也能采用电机驱动。The mounting seat 523 is a pipe hoop structure. The mounting seat 523 is clamped to a frame seat tube (not shown), and the mounting seat 523 is further provided with a wire tube seat 525. The end of the wire tube 522 is inserted into the wire tube seat 525 in an interference manner, and the pull wire 520 penetrates the inside of the wire tube 522. Note: Referring to Figure 6, the cable in this example can also be driven by a motor.
变速时，拉线520克服扭转弹簧519的簧力，拉动连杆513，使连杆513绕枢轴518转动，带动连接件531再带动拨链器530相对牙盘罩501横向位移而实现变速。During the speed change, the pull wire 520 overcomes the spring force of the torsion spring 519, pulls the link 513, rotates the link 513 about the pivot 518, drives the connecting member 531, and then drives the derailleur 530 to laterally displace the crank cover 501 to achieve speed change.
相比前案，图18还示出了一个稍有不同的方案：1、取消了1根连杆(图17中的510)。相应的，连接件531a的一侧稍短且仅设有1个枢轴孔；连接座503a同样不再设有用于连接连杆(图17中的510)的枢轴孔。2、连接座503a用于枢接连杆513的枢轴孔的位置较原来更高，即连杆513a(连接件531a至连接座503a段)相比连杆512a较短。Compared to the previous case, Figure 18 also shows a slightly different solution: 1. One link is eliminated (510 in Figure 17). Correspondingly, one side of the connecting member 531a is slightly shorter and is provided with only one pivot hole; the connecting seat 503a is also no longer provided with a pivot hole for connecting a connecting rod (510 in FIG. 17). 2. The position of the pivot hole of the connecting seat 503a for pivotally connecting the connecting rod 513 is higher than the original, that is, the connecting rod 513a (the section from the connecting member 531a to the connecting seat 503a) is shorter than the connecting rod 512a.
为了更好的防尘，本例中的连接座(530；530a)还可优选为矩形的管状。In order to better prevent dust, the connecting seat (530; 530a) in this example may also be a rectangular tube.
注：1、本案中的连杆机构与现有技术中常见的下推式前拨的连杆结构类同。2、本例与例3、例4示出了致动部包括连杆机构的方案。3、参考前例，本例中的拉线同样也能采用电机驱动。Note: 1. The link mechanism in this case is similar to the push-down forward link structure commonly used in the prior art. 2. This example and Examples 3 and 4 show a scheme in which the actuating part includes a link mechanism. 3. Referring to the previous example, the cable in this example can also be driven by a motor.
实施例6Example 6
本例与实施例1的不同之处在于，致动部不同。This example differs from Embodiment 1 in that the actuating portion is different.
如图19、图20所示，牙盘罩601的内侧罩壁设有一体的连接座602，连接座602为管状，其外周面刻有外螺纹，其内腔具有非圆形(矩形、六边形、花键型)的横截面，本例优选为六边形。活动杆607为六棱柱，活动杆607与连接座602的内腔为间隙配合，活动杆607***连接座602并能往复位移，拨链器603的上部设有孔605，孔605的横截面为非圆形，本例优选为六边形。活动杆607的端部606为六棱柱，端部606与孔605为过盈配合，端部606***孔605并固定。活动杆607另一端的轴心位置设有孔608。液压活塞包括缸体610，活塞611位于缸体610的中部，液压管(612；615)分别接通缸体610内部的两端，活塞611具有活塞杆611a，活塞杆611a的端部与孔608为过盈配合，活塞杆611a的端部***孔608并固定。套管609的一端设有内螺纹并旋紧在连接座602的外螺纹。套管609套在活塞杆611a和活动杆607的外部。套管609的另一端与缸体610以螺钉616固定连接在一起。As shown in FIG. 19 and FIG. 20, the inner cover wall of the crank cover 601 is provided with an integrated connection base 602. The connection base 602 is tubular, the outer peripheral surface is engraved with external threads, and the inner cavity is non-circular (rectangular, six (Lateral, spline type), in this example, a hexagon is preferred. The movable rod 607 is a hexagonal prism. The movable rod 607 and the inner cavity of the connecting seat 602 are gap-fitted. The movable rod 607 is inserted into the connecting seat 602 and can be reciprocated. The upper part of the derailleur 603 is provided with a hole 605. The cross section of the hole 605 is Non-circular, this example is preferably hexagonal. The end 606 of the movable rod 607 is a hexagonal prism, the end 606 and the hole 605 are interference fit, and the end 606 is inserted into the hole 605 and fixed. A hole 608 is provided at the axial center position of the other end of the movable rod 607. The hydraulic piston includes a cylinder block 610. The piston 611 is located in the middle of the cylinder block 610. Hydraulic pipes (612; 615) are connected to both ends of the cylinder block 610. The piston 611 has a piston rod 611a, an end of the piston rod 611a and a hole 608. For an interference fit, the end of the piston rod 611a is inserted into the hole 608 and fixed. One end of the sleeve 609 is provided with an internal thread and is screwed on the external thread of the connecting seat 602. The sleeve 609 is sleeved on the outside of the piston rod 611a and the movable rod 607. The other end of the sleeve 609 is fixedly connected with the cylinder 610 by screws 616.
变速时，液压管(612；615)分别向缸体610注入或抽出液压液，活塞611和活塞杆611a被推动，进而带动活动杆607，活动杆607沿连接座602的内腔的轴向位移，带动拨链器603横向位移。During shifting, the hydraulic pipe (612; 615) injects or extracts hydraulic fluid into the cylinder 610, respectively, and the piston 611 and the piston rod 611a are pushed, thereby driving the movable rod 607, and the movable rod 607 is axially displaced along the inner cavity of the connecting seat 602 , Drive the derailleur 603 lateral displacement.
实施例7Example 7
本例与实施例1的不同之处在于，致动部不同。This example differs from Embodiment 1 in that the actuating portion is different.
如图21、图22所示，在牙盘罩701的内侧罩壁设有连接座731，连接座731为圆管状，其外周面具有外螺纹，其内孔733具有非圆形横截面，本例优选为矩形。拨链器708位于牙盘罩701的内部。活动杆717与孔733的截面形状相应且为间隙配合，活动杆717***孔733并能往复位移，活动杆717的端部采用粘接(或螺钉连接等方式)固定连接到拨链器708(或 活动杆717与拨链器708为一体制造)。弹簧716套在活动杆717的外部，并位于拨链器708与牙盘罩701的内壁之间。活动杆717的另一端凸出连接座731，套管730的一端具有内螺纹，套管730套在活动杆717的外部，套管730的内螺纹旋紧在连接座731的外螺纹。套管730的另一端具有线管座，线管711的端部过盈的***线管座。拉线710贯穿线管711，拉线710的端部***活动杆717端部的孔中并以粘接或螺钉紧压等方式与活动杆717固定连接。As shown in FIG. 21 and FIG. 22, a connection seat 731 is provided on the inner cover wall of the crank cover 701. The connection seat 731 has a circular tube shape. Examples are preferably rectangular. The derailleur 708 is located inside the crank cover 701. The cross-sectional shape of the movable rod 717 is corresponding to the hole 733 and is a clearance fit. The movable rod 717 is inserted into the hole 733 and can be reciprocated. (Or the movable lever 717 and the derailleur 708 are integrally manufactured). The spring 716 is sleeved on the outside of the movable rod 717 and is located between the derailleur 708 and the inner wall of the crank cover 701. The other end of the movable rod 717 protrudes from the connecting seat 731. One end of the sleeve 730 has an internal thread. The sleeve 730 is sleeved on the outside of the movable rod 717. The internal thread of the sleeve 730 is screwed to the external thread of the connecting seat 731. The other end of the sleeve 730 has a wire socket, and the end of the wire pipe 711 is inserted into the wire socket with interference. A pull wire 710 penetrates the wire tube 711, and an end portion of the pull wire 710 is inserted into a hole at an end of the movable rod 717 and is fixedly connected to the movable rod 717 by means of bonding or screw pressing.
变速时，拉线710克服弹簧716的簧力并拉动活动杆717，活动杆717受孔733的限定沿其轴向滑动，带动拨链器708横向位移。During shifting, the pull wire 710 overcomes the spring force of the spring 716 and pulls the movable lever 717. The movable lever 717 is limited by the hole 733 and slides along its axial direction, which drives the derailleur 708 to move laterally.
注：1、参考前例，本例中的拉线同样也能采用电机驱动。2、本例与例6示出了致动部包括活动杆的方案。Note: 1. With reference to the previous example, the cable in this example can also be driven by a motor. 2. This example and Example 6 show a scheme in which the actuating part includes a movable lever.
实施例8Example 8
本例与实施例1的不同之处在于，牙盘罩不同。This example differs from Example 1 in that the crank cover is different.
如图23、图24所示，为了防止链条卡入牙盘802侧面与牙盘罩801内壁之间的间隙。在牙盘罩801的侧壁，链条啮合段(链条与牙盘的啮合段)的投影位置，牙盘罩801的侧壁粘接(或螺钉连接)了至少1个凸块803，凸块805与牙盘802的间隙L＜链条的宽度。在牙盘罩801的另一侧壁，链条啮合段的投影位置同样粘接了至少1个凸块806，凸块806与牙盘802的间隙L＜链条的宽度。优选凸块(803；804)的侧面投影形状为圆弧形，并沿整个链条啮合段布置。As shown in FIG. 23 and FIG. 24, in order to prevent the chain from getting caught in the gap between the side surface of the crank 802 and the inner wall of the crank cover 801. On the side wall of the crank cover 801, at the projection position of the chain engagement section (the engagement section of the chain and the crank), the sidewall of the crank cover 801 is bonded (or screwed) with at least one projection 803 and projection 805 The clearance L from the chainring 802 is less than the width of the chain. On the other side wall of the crank cover 801, at least one projection 806 is also bonded to the projection position of the chain meshing section, and the gap L between the projection 806 and the crank 802 is less than the width of the chain. Preferably, the side projection shape of the bumps (803; 804) is a circular arc shape, and is arranged along the entire chain meshing section.
要防止链条卡入牙盘盘侧面与牙盘罩之间的间隙，还包括方案2：牙盘罩的内壁平直且与牙盘的间隙＜链条的宽度。还包括方案3：以牙盘罩的罩壁向内凸出形成凸出部(替代凸块)，凸出部与牙盘侧面的间隙＜链条的宽度。To prevent the chain from getting caught in the gap between the side of the crank plate and the crank cover, the solution 2 is also included: the inner wall of the crank plate is straight and the gap with the crank is less than the width of the chain. Solution 3 is also included: a convex wall is protruded inwardly to form a convex portion (instead of a bump), and the gap between the convex portion and the side of the dental plate is less than the width of the chain.
注：虽然本发明以较佳实施例揭露如上，但并非限定本发明实施的范围。任何本领域的普通技术人员，在不脱离本发明的发明范围内，当可作些许的改进，即凡是依照本发明所做的同等改进，应为本发明的范围所涵盖。Note: Although the present invention is disclosed as above with preferred embodiments, it does not limit the scope of the present invention. Any person of ordinary skill in the art can make some improvements without departing from the scope of the present invention, that is, any equivalent improvement made in accordance with the present invention should be covered by the scope of the present invention.

Claims (10)

  1. 一种前拨，包括：牙盘罩、拨链器、致动部；A front dial includes: a crank cover, a derailleur, and an actuating part;
    所述牙盘罩构造为至少将牙盘的上部罩住；所述牙盘罩固定连接在车架；The crank cover is configured to cover at least an upper portion of the crank plate; the crank plate cover is fixedly connected to a vehicle frame;
    所述拨链器位于所述牙盘罩的内部；The derailleur is located inside the crank cover;
    所述致动部连接在所述牙盘罩与所述拨链器之间，用以支承并致动所述拨链器相对所述牙盘罩横向位移，以带动所述拨链器拨动链条由所述牙盘的初始档位移向目标档位。The actuating portion is connected between the crank cover and the derailleur, and is used to support and actuate the lateral displacement of the derailleur relative to the crank cover to drive the derailleur to move. The chain is shifted from the initial gear of the crankset to the target gear.
  2. 如权利要求1所述的前拨，其特征是，所述拨链器包括2块拨链板；所述拨链板的上端一体制造或固定连接在一起；所述拨链板与所述致动部固定连接或一体制造。The front dial according to claim 1, wherein the derailleur comprises two derailleur plates; an upper end of the derailleur plate is integrally manufactured or fixedly connected together; the derailleur plate and the cause The moving part is fixedly connected or integrally manufactured.
  3. 如权利要求2所述的前拨，其特征是，所述前拨还包括防脱链部；所述防脱链部能开闭的连接在所述拨链板的下端，用以敞开或遮闭所述拨链板下端之间的空隙。The front dial according to claim 2, wherein the front dial further comprises an anti-off chain portion; the anti-off chain portion can be opened and closed connected to a lower end of the derailleur plate for opening or covering. Close the gap between the lower ends of the derailleur plates.
  4. 如权利要求1所述的前拨，其特征是，所述致动部包括导轨、滑块、偏力机构a和拉线a；所述导轨横向的固定连接在所述牙盘罩；所述滑块能往复位移的连接在所述导轨；所述滑块与所述拨链器固定连接或一体制造；所述偏力机构a连接至所述滑块以向所述滑块施加偏力；所述拉线a的端部连接至所述滑块，所述拉线a贯穿在线管a中或连接至电机a，以与偏力机构a共同作用使所述滑块位移。The front dial according to claim 1, wherein the actuating portion comprises a guide rail, a slider, a biasing mechanism a, and a pull wire a; the guide rail is fixedly connected to the crank cover in a lateral direction; The block can be reciprocally connected to the guide rail; the slider is fixedly connected or integrally manufactured with the derailleur; the biasing mechanism a is connected to the slider to apply a biasing force to the slider; An end of the pull wire a is connected to the slider, and the pull wire a runs through the wire tube a or is connected to the motor a to displace the slider in cooperation with a biasing mechanism a.
  5. 如权利要求1所述的前拨，其特征是，所述致动部包括连杆机构、拉线b、偏力机构b；所述连杆机构连接在所述牙盘罩与所述拨链器之间，用以支承并引导所述拨链器横向位移；所述偏力机构b连接至所述连杆机构以向所述连杆机构施加偏力；所述拉线b的端部连接至所述连杆机构，所述拉线b贯穿在线管b中或连接至电机b，以与偏力机构b共同作用使所述连杆机构动作。The front dial according to claim 1, wherein the actuating portion includes a link mechanism, a pull wire b, and a biasing mechanism b; and the link mechanism is connected to the crank cover and the derailleur. Between to support and guide the lateral displacement of the derailleur; the biasing mechanism b is connected to the link mechanism to apply a biasing force to the link mechanism; the end of the pull wire b is connected to the In the link mechanism, the pull wire b runs through the bobbin b or is connected to the motor b, so as to work with the biasing mechanism b to make the link mechanism move.
  6. 如权利要求1所述的前拨，其特征是，所述致动部包括活动杆；所述活动杆能沿其轴向往复位移的连接至所述牙盘罩；所述活动杆的一端与所述拨链器一体制造或固定连接；所述致动部还包括拉线机构或液压机构；The front dial according to claim 1, wherein the actuating part comprises a movable rod; the movable rod is reciprocally displaceable along the axial direction thereof and is connected to the crank cover; one end of the movable rod and The derailleur is integrally manufactured or fixedly connected; the actuation part further includes a wire drawing mechanism or a hydraulic mechanism;
    所述拉线机构包括偏力机构c和拉线c；所述偏力机构c连接至所述活动杆以向所述活动杆施加偏力；所述拉线c的端部连接至所述活动杆，所述拉线c贯穿在线管c中或连接至电机c以与偏力机构c共同作用使所述活动杆沿其轴向位移；或The pulling mechanism includes a biasing mechanism c and a pulling wire c; the biasing mechanism c is connected to the movable lever to apply a biasing force to the movable lever; an end portion of the pulling wire c is connected to the movable lever, so The pulling wire c runs through the wire tube c or is connected to the motor c to cooperate with the biasing mechanism c to move the movable rod along its axial direction; or
    所述液压机构包括缸体、活塞，所述缸体固定连接至所述牙盘罩；所述活塞的端部固定连接在所述活动杆以使所述活动杆沿其轴向位移。The hydraulic mechanism includes a cylinder body and a piston, the cylinder body is fixedly connected to the crank cover; an end portion of the piston is fixedly connected to the movable rod to displace the movable rod along its axial direction.
  7. 如权利要求1所述的前拨，其特征是，所述牙盘罩包括罩体a和罩体b；所述牙盘罩的后部具有容纳所述链条通过的开口；所述罩体a和所述罩体b沿所述牙盘的轴心线所在的平面，能拆卸的固定连接在一起。The front dial according to claim 1, wherein the crank cover includes a cover body a and a cover body b; a rear portion of the crank cover has an opening for receiving the passage of the chain; and the cover body a And the cover body b can be detachably and fixedly connected along the plane where the axis line of the crankset is located.
  8. 如权利要求1所述的前拨，其特征是，所述牙盘罩构造为后端开放的盒状，以使所述牙盘罩安装就位时，能容纳所述牙盘与所述链条通过；所述牙盘罩对应所述牙盘轴心的位置设有中轴孔；在所述牙盘罩的内侧罩壁设有贯通槽，所述贯通槽由所述牙盘罩的后端贯通至所述中轴孔，以使所述牙盘罩在安装时能容纳中轴通过。The front dial of claim 1, wherein the crankset cover is configured in a box shape with an open rear end, so that when the crankset cover is installed in place, the crankset and the chain can be accommodated. Pass; the crankshaft cover is provided with a central axis hole at a position corresponding to the crankshaft axis; a through groove is provided on an inner cover wall of the crankshaft cover, and the through groove is defined by a rear end of the crankshaft cover It penetrates to the bottom bracket hole, so that the crankshaft cover can accommodate the bottom bracket when passing through.
  9. 如权利要求1所述的前拨，其特征是，在所述链条啮合段的侧向投影位置，所述牙盘罩的侧壁与所述牙盘侧面的间隙＜所述链条的宽度；或The front dial according to claim 1, wherein, at a lateral projection position of the chain engaging section, a gap between a side wall of the crank cover and a side of the crank is less than a width of the chain; or
    所述牙盘罩包括至少1个凸块；所述凸块固定连接在所述牙盘罩的侧壁、所述链条啮合段的侧向投影位置；所述凸块与所述牙盘侧面的间隙＜所述链条的宽度。The crank cover includes at least one projection; the projection is fixedly connected to a side wall of the crank cover and a side projection position of the chain engagement section; the projection and a side of the crank Gap <width of the chain.
  10. 一种自行车，其特征是，该自行车包括权利要求1至9中任一项权利要求所述的前拨。A bicycle, characterized in that the bicycle includes a front dial according to any one of claims 1 to 9.
PCT/CN2018/101981 2018-06-11 2018-08-23 Front derailleur WO2019237507A1 (en)

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CN114162251B (en) * 2020-09-11 2023-11-28 株式会社岛野 bicycle derailleur

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