CN115489653B - Pedal shaft connecting mechanism for bicycle - Google Patents
Pedal shaft connecting mechanism for bicycle Download PDFInfo
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- CN115489653B CN115489653B CN202211248033.9A CN202211248033A CN115489653B CN 115489653 B CN115489653 B CN 115489653B CN 202211248033 A CN202211248033 A CN 202211248033A CN 115489653 B CN115489653 B CN 115489653B
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- pedal shaft
- pedal
- crank
- shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 55
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
-
- 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
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/08—Pedals
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Mechanical Control Devices (AREA)
Abstract
The invention provides a pedal shaft connecting mechanism for a bicycle, which comprises a crank and a pedal shaft for mounting pedals, wherein the lower end of the crank is provided with a mounting groove similar to a toppling L-shaped structure, and the mounting groove is opened towards the bottom, the inner side and the outer side of the crank; the mounting groove comprises a shallow groove part and a deep groove part; the tail pivot of the pedal shaft is mounted to the first pivot hole; a stop block positioned above the tail part of the pedal shaft is also arranged in the bottom area of the deep groove part; the stop is configured to: when the pedal shaft is positioned in the horizontal direction, the lower surface of the stop block is abutted against the side surface of the tail part of the pedal shaft, so that the pedal shaft is locked in the horizontal direction; when the stopper is located at an outer position away from the inner side wall of the deep groove portion, the pedal shaft may be rotated to a vertical direction position, and an inner end surface of the stopper may abut against a rear portion of the pedal shaft while biasing the rear portion of the pedal shaft toward the inner side wall of the deep groove portion.
Description
Technical Field
The invention relates to the field of manual vehicles or fitness equipment, in particular to a pedal shaft connecting mechanism for a bicycle.
Background
Bicycles, such as bicycles, are common vehicles or exercise equipment in life. Under the state of use, the pedal is perpendicular with the bicycle body, and the pedal can transversely protrude the bicycle body and occupy partial space, causes the bicycle to be in the space waste when placing and packing, and this is difficult to deposit in small-size house, can occupy more space. In addition, in the case of ocean or long-distance mass transportation, since the lateral maximum extension distance of the pedals determines the lateral dimension of the bicycle, the space is wasted and the freight is increased, and the transportation cost is increased.
Because the conventional bicycle does not have a folding function, the connection between the pedal plate and the pedal shaft is a fixed mode; however, the existing common folding bicycles often fold the bicycle body up and down and left and right, do not involve the connection part of the pedal shaft and the crank, and cannot reduce the maximum transverse dimension.
The crank of the bicycle is usually connected with the pedal shaft by adopting a threaded bolt structure, or can be connected together by adopting an interference fit clamping structure. The pedals are arranged perpendicular to the vehicle body in use, and the connection mode is that the pedals are wider parts except the handle bars. Particularly in the case where the handlebars can be laid on top of each other, the pedals on both sides of the bicycle perpendicular to the body of the bicycle occupy a wide size. In order to reduce the occupied area of the bicycle during transportation or storage, the pedal and the pedal shaft are detached together by using a pedal detaching tool, and a special tool is required for installation, so that a plurality of inconveniences are caused. At present, no simple structure of a crank and a pedal shaft exists in the market, so that the occupied size of the bicycle crank and the pedal can be reduced rapidly and conveniently as required, the occupied size is reduced to the same width with the crank, and the bicycle crank and the pedal can be quickly restored to a working state.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a pedal axle coupling mechanism for a bicycle that obviates or mitigates one or more of the disadvantages of the prior art.
In one specific embodiment of the pedal shaft connecting mechanism according to the present disclosure, the connecting mechanism includes a crank and a pedal shaft for mounting a pedal, the lower end of the crank is provided with a mounting groove of an L-shaped configuration like a toppling, the mounting groove extending in a direction perpendicular to a bicycle body and opening toward the bottom, inner side and outer side of the crank; the mounting groove comprises a shallow groove part positioned at one side facing the far end of the pedal shaft and a deep groove part positioned at one side facing the scooter body; the tail part of the pedal shaft is pivotally mounted to a first pivot hole positioned on the groove wall of the mounting groove in a manner of being rotatable between the horizontal direction and the vertical direction; the first pivot hole is positioned to be located in a notch area of the deep groove part; the bottom area of the deep groove part is also provided with a stop block which is positioned above the tail part of the pedal shaft and can reciprocate in the horizontal direction; the stop is configured to: when the pedal shaft is positioned in the horizontal direction, the lower surface of the stop block is abutted against the side surface of the tail part of the pedal shaft, so that the pedal shaft is locked in the horizontal direction; when the stopper is located at an outer position away from the inner side wall of the deep groove portion, the pedal shaft may be rotated to a vertical direction position, and an inner end surface of the stopper may abut against a rear portion of the pedal shaft while biasing the rear portion of the pedal shaft toward the inner side wall of the deep groove portion.
Preferably, in one specific embodiment of the connection mechanism according to the present disclosure, the tail of the pedal shaft is a square shaft section; the square shaft section has a second pivot hole coaxial with the first pivot hole, and the pedal shaft is mounted to the lower end of the crank by a pin shaft penetrating the first pivot hole, the second pivot hole and the wall of the mounting groove. Preferably, the upper surface of the square shaft section of the pedal shaft has a first inclined surface, and the lower surface of the stopper has a second inclined surface which is mutually matched with the first inclined surface.
Preferably, in the above-described connection mechanism, the pedal shaft is substantially collinear with the longitudinal axis of the crank when the pedal shaft is rotated to the vertical direction. For example, this may be achieved by the first pivot hole and the second pivot hole being arranged to lie on an axial axis of the crank.
Alternatively, in one specific embodiment of the connection mechanism according to the present disclosure, the tip end of the square shaft segment of the pedal shaft has a recess, and when the pedal shaft is rotated to the vertical direction, the inner side end surface of the stopper abuts against the recess position of the square shaft segment of the pedal shaft.
In a preferred embodiment of the connection mechanism according to the present disclosure, the stopper is mounted in the deep groove portion by a biasing resilient biasing member.
Further preferably, the upper surface of the stopper or both side surfaces perpendicular to the pin shaft are provided with grooves for placing biasing elastic biasing members, one end of which is connected with the first fastening structure of the stopper and the other end of which is connected with the second fastening structure of the crank.
Preferably, in the connection mechanism, the tail end of the stopper is provided with a rough surface structure or a convex/concave operation structure which is easy to be manually operated.
In a preferred embodiment of the connection mechanism according to the present disclosure, the upper surface of the stopper is provided with a groove for placing the biasing elastic biasing member, and the side surface of the stopper is provided with a lateral protrusion and an L-shaped groove; the side wall of the deep groove part is provided with a wall groove corresponding to the side protrusion and a wall protrusion corresponding to the L-shaped groove.
Preferably, at least one of the crank, the stop, and the crank shaft is an integrally formed injection molded part.
In some embodiments, the square shaft section of the pedal shaft is generally rectangular in cross-section.
In some embodiments, the shallow slot portion of the mounting slot is a through slot and the deep slot portion is an open slot. When the crank is positioned at the lower position, the open slot is positioned above the through slot, and the bottom of the open slot is used for installing a stop block or being used as an accommodating space capable of enabling the square shaft section of the crank to turn upwards.
According to the bicycle and the connecting mechanism thereof, the beneficial effects at least comprise: the technical scheme in the disclosure carries out innovative design to the traditional pedal shaft and the connecting mode and structure of the crank of the existing bicycle, so that the pedal shaft and the pedal connected with the pedal shaft can be turned down to a position approximately collinear with the crank, the occupied space of the pedal and the maximum thickness of the whole bicycle are reduced, and the bicycle is convenient to store and transport in batches.
By utilizing the technical scheme according to the disclosure, the occupied area of the pedal can be simply, rapidly and conveniently reduced, the width of the pedal is reduced to the same extent as that of the crank, and the pedal can be rapidly restored to the working state.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the above-described specific ones, and that the above and other objects that can be achieved with the present invention will be more clearly understood from the following detailed description.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and together with the description serve to explain the application. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. Corresponding parts in the drawings may be exaggerated, i.e. made larger relative to other parts in an exemplary device actually manufactured according to the present application, for convenience in showing and describing some parts of the present application. In the drawings:
fig. 1 is a schematic side elevational view of a pedal shaft connecting mechanism according to an embodiment of the present invention, with the pedal shaft in a horizontal orientation.
Fig. 2 is a schematic side elevational view of the pedal shaft in the pedal shaft connecting mechanism in an embodiment of the pedal shaft connecting mechanism of the present invention in a vertical position.
FIG. 3 is a schematic view of a crank in an embodiment of the pedal shaft connecting mechanism of the present invention; fig. 3 (a) is a perspective view of the crank from the left side, fig. 3 (b) is a perspective view of the crank from the right side, and fig. 3 (c) is a partial enlarged view of fig. 3 (b).
Fig. 4 is a schematic structural view of a pedal shaft in an embodiment of the pedal shaft connecting mechanism of the present invention.
Fig. 5 is a schematic structural view of a stopper in an embodiment of the pedal shaft connecting mechanism of the present invention, wherein fig. 5 (a) is a perspective view of the stopper from an upper perspective, and fig. 5 (b) is a perspective view of the stopper from a lower perspective.
Fig. 6 is a schematic view of the crank and pedal shaft in an operating state of an embodiment of the pedal shaft connecting mechanism of the present invention.
Fig. 7 is a schematic view of the crank and pedal shaft in an extended state in an embodiment of the pedal shaft connecting mechanism of the present invention.
FIG. 8 is a side perspective view of a pedal shaft coupling mechanism in accordance with a further embodiment of the present invention with the pedal shaft in a horizontal orientation in which the crank is transparentized;
FIG. 9 is an enlarged partial perspective view of an example of the pedal shaft connecting mechanism shown in FIG. 8;
FIG. 10 is a perspective view of an example of the pedal shaft coupling mechanism shown in FIG. 8, shown disassembled;
FIG. 11 is a partial side perspective view of the example pedal shaft coupling mechanism shown in FIG. 8, shown disassembled; and
Fig. 12 is a further partial side perspective view of the example pedal shaft coupling mechanism shown in fig. 8, shown disassembled.
Reference numerals:
1. A crank; 2. a pedal shaft; 3. a stop block; 4. a resilient biasing member; 5. a pin shaft; 6. a first fastening structure; 7. a second fixedly connected structure; 11. a mounting groove; 111. a through groove area; 112. an open slot region; 12. a first pivot hole; 21. a square shaft section; 22. a second pivot hole; 23. a concave portion; 201. the upper surface of the square shaft section; 201a, a first inclined plane; 202. the lower surface of the square shaft section; 203. the rear end face of the square shaft section; 31. a groove; 32. a roughened surface structure; 33. a lower protruding part; 301. the upper surface of the stop block; 302. the lower surface of the stop block; 302a, a second inclined plane; 303. the inner side end surface of the stop block;
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. The exemplary embodiments of the present invention and the descriptions thereof are used herein to explain the present invention, but are not intended to limit the invention.
It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, while other details not greatly related to the present invention are omitted.
It should be emphasized that the term "comprises/comprising" when used herein is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
It is also noted herein that the term "coupled" may refer to not only a direct connection, but also an indirect connection in which an intermediate is present, unless otherwise specified.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.
In order to solve the problems that the pedals of the scooter occupy a large amount of space and the pedals are not easy to disassemble and assemble, the embodiment of the invention provides a pedal shaft connecting mechanism for a bicycle.
According to one aspect of the present invention, referring to fig. 1 to 12, there is proposed a pedal shaft connecting mechanism for a scooter, the connecting mechanism comprising a crank 1 and a pedal shaft 2 for mounting a foot pedal, the lower end of the crank being provided with a mounting groove 11 of a toppling-like L-shaped configuration, the mounting groove extending in a direction perpendicular to the scooter body and opening towards the bottom, inner side and outer side of the crank; the mounting groove 11 includes a shallow groove portion located on a side toward the distal end of the pedal shaft and a deep groove portion located on a side toward the body of the scooter; the tail part of the pedal shaft is pivotally mounted to a first pivot hole positioned on the groove wall of the mounting groove in a manner of being rotatable between the horizontal direction and the vertical direction; the first pivot hole is positioned to be located in a notch area of the deep groove part; the bottom area of the deep groove part is also provided with a stop block 3 which is positioned above the tail part of the pedal shaft and can reciprocate in the horizontal direction; the stopper 3 is configured to: when the pedal shaft 2 is positioned in the horizontal direction, the lower surface of the stopper 3 abuts against the side surface of the tail portion of the pedal shaft, thereby locking the pedal shaft in the horizontal direction; when the stopper is located at an outer position away from the inner side wall of the deep groove portion, the pedal shaft may be rotated to a vertical direction position, and an inner end surface of the stopper may abut against a rear portion of the pedal shaft while biasing the rear portion of the pedal shaft toward the inner side wall of the deep groove portion.
Preferably, in one specific embodiment of the connection mechanism according to the present disclosure, the tail of the pedal shaft is a square shaft section; the square shaft section has a second pivot hole coaxial with the first pivot hole, and the pedal shaft is mounted to the lower end of the crank by a pin shaft penetrating the first pivot hole, the second pivot hole and the wall of the mounting groove. Preferably, the upper surface of the square shaft section of the pedal shaft has a first inclined surface, and the lower surface of the stopper has a second inclined surface which is mutually matched with the first inclined surface.
Preferably, in the above-described connection mechanism, the pedal shaft is substantially collinear with the longitudinal axis of the crank when the pedal shaft is rotated to the vertical direction. For example, this may be achieved by the first pivot hole and the second pivot hole being arranged to lie on an axial axis of the crank.
Preferably, the stop is configured as a wedge-shaped structure with large outside and small inside.
Fig. 1 to 7 show a specific example of the pedal shaft connecting mechanism according to the present invention. The pedal shaft connecting mechanism includes: a pedal shaft 2 for mounting a foot pedal (not shown in the drawings) and a crank 1. The lower end of the crank 1 is provided with a mounting groove 11 and a first pivot hole 12 (see fig. 3 (a)), the tail end of the pedal shaft 2 is a square shaft section 21, the square shaft section 21 is provided with a second pivot hole 22, and the pedal shaft 2 is mounted at the mounting groove 11 of the crank 1 through a pin shaft 5 inserted into the first pivot hole 12 and the second pivot hole 22. The mounting groove 11 is open at the bottom, i.e. bottom end, of the crank 1, providing sufficient space for rotation or oscillation of the pedal shaft 2.
In some embodiments, the connecting mechanism further comprises a stop 3, and the mounting groove 11 of the crank 1 is provided with a space for accommodating part of the stop 3 on the side away from the footboard, i.e. the deep groove on the side facing the body of the scooter. When the pedal shaft 2 is positioned in the horizontal direction, that is, in the working state, the pedal shaft 2 is approximately vertical to the crank 1, the stop block 3 is inserted into the mounting groove 11 and is arranged at a locking position positioned on the inner side wall adjacent to the deep groove part, and the lower surface of the stop block 3 abuts against the upper end surface of the square shaft section 21 of the pedal shaft 2 so as to prevent the pedal shaft 2 from overturning. In the extended state of the pedal shaft 2, i.e. in the vertical direction, the stopper 3 is withdrawn outwardly in the mounting groove 11, and the pedal shaft 2 is turned down to a position approximately collinear with the crank 1.
The working state refers to that the pedal and the pedal shaft 2 are stepped and stressed by a user so as to transmit power to the flywheel of the scooter, and the extending state refers to that the pedal and the pedal shaft 2 are turned downwards, and the pedal shaft is in a vertical direction so as to reduce the space occupied by the pedal and the pedal shaft 2 in the transverse direction. In the tail end direction of the pedal, the pedal shaft 2 can be provided with a pedal and one side of the original scooter is taken as the head end, so that the connection part of the pedal shaft 2 and the crank 1 is the rear or tail end, and the front and rear directions of the stop block 3 are vice versa. It will be appreciated that fig. 6 and 7 are indeed semi-sectioned, but are not identified in cross-section, and are primarily intended to illustrate the structure within the mounting slot, and the positional relationship and co-operation between the various components.
The embodiment of the invention carries out innovative design on the connection mode and structure of the traditional pedal shaft 2 and the crank 1 of the existing bicycle, so that the pedal shaft 2 and the pedal connected with the pedal shaft can be turned down to a position approximately collinear with the crank 1, the occupied space of the pedal and the maximum thickness of the whole scooter body part are reduced, and the storage and batch transportation of the bicycle are facilitated.
In some embodiments, as shown in fig. 1,2 and fig. 6 and 7, the stopper 3 may not only be used as a force-bearing structure of the square shaft section 21 (rear half section) of the pedal shaft 2 in the working state, but also may seal the pedal shaft 2 from swinging in the extended state. Specifically, as shown in fig. 7, in the extended state of the pedal shaft 2, the inner end surface of the stopper 3 is also used to abut against a square shaft section 21 of the pedal shaft 2 that is turned approximately in line with the crank 1.
The crank 1 and the stop block 3 of the embodiment of the invention can be integrally formed by injection molding, thereby being convenient to manufacture and lower in cost.
In some embodiments, as shown in fig. 4, the square shaft section 21 of the pedal shaft 2 is generally rectangular in cross section, and the general meaning herein is that the edge portion thereof may be rounded or chamfered. The square shaft section 21 and the shaft section of the pedal shaft 2 for mounting the pedal may be integrally formed, and the surface of the square shaft section 21 contacting the mounting groove 11 may be designed to be planar. It will be appreciated that the pedal shaft of the present application may be of other suitable configuration that can be locked or unlocked by a stop.
In some embodiments, as shown in fig. 4 and 7, the square shaft section 21 of the pedal shaft 2 has a recess 23, and in the extended state, the inner end surface of the stopper 3 abuts against the recess 23 of the square shaft section 21 of the pedal shaft 2. Preferably, the concave portion 23 may be disposed at the junction between the rear end surface 203 of the square shaft section and the lower surface 202 of the square shaft section, and the structure of the concave portion 23 may be designed to correspond to the lower portion structure of the inner end surface of the stopper 3, so as to achieve seamless connection, and according to the combination of the two, the limiting effect of the stopper 3 is achieved, so as to avoid the rocking and swinging of the pedal shaft 2 in the extended state.
In some embodiments, as shown in fig. 4, 5 and 6, the upper surface of the square shaft section 21 of the pedal shaft 2 has a first inclined surface 201a, and the lower surface of the inner side end surface of the stopper 3 has a second inclined surface 302a, and the first inclined surface 201a and the second inclined surface 302a are matched with each other. Specifically, the first inclined plane 201a may occupy a portion of the upper surface 201 of the square shaft section, the lower surface 302 of the inner side end surface of the stop block 3 may be both the second inclined plane 302a, and the two surfaces in contact with each other are both inclined planes, so that the two surfaces are not easy to slide relatively in the working state, so as to transfer force smoothly.
In some embodiments, the stop 3 may be connected to the crank 1 by a resilient biasing member 4. For example, as shown in fig. 5, 6 and 7, it is preferable that the upper surface of the stopper 3 or both surfaces perpendicular to the pin 5 are provided with grooves 31 for placing the elastic biasing member 4, and one end of the elastic biasing member 4 is connected to the first fastening structure 6 provided with the stopper 3, and the other end is connected to the second fastening structure 7 provided with the crank 1. The recess 31 may be provided in the upper surface 301 of the stop 3 or in two opposite surfaces perpendicular to the pin 5, the depth of the recess 31 may be greater than or equal to the diameter of the resilient biasing member 4, the resilient biasing member 4 preferably being a spring that pulls the stop towards the inside. The purpose of the resilient biasing member 4 is to exert a certain pulling force on the stop 3 in the extended state, avoiding its position out of the mounting groove 11, the resilient biasing member 4 also preventing loss of the stop 3.
The first fixing structure 6 and the second fixing structure can be fixed on the corresponding positions of the stop block 3 and the crank 1 by adopting screws.
In some embodiments, as shown in fig. 5, the tail end of the stopper 3 is provided with a rough surface structure 32 or a convex/concave operation structure which is easy to be manually operated. For example, the roughened surface structure 32 may be a plurality of spaced grooves or knurling, and the operating structure may be protrusions, depressions, tabs, or the like.
In some embodiments, as shown in fig. 3, 6 and 7, the mounting groove 11 includes a shallow groove portion on a side toward the distal end of the pedal shaft, the shallow groove portion including a through groove region 111, and a deep groove portion on a side toward the body of the scooter, the deep groove portion including an open groove region 112 and an upper through groove. An open slot area 112 is located above the through slot area 111, the open slot area 112 being used for mounting the stopper 3 or as a receiving space enabling the (rear half of the) square shaft section 21 of the crank 1 to be turned upwards. In the working state, the through groove area 111 of the mounting groove 11 is mainly used for the position corresponding to the square shaft section 21, and the open groove area 112 is mainly used for the corresponding stop block 3. In the extended state, the square shaft section 21 turns downwards in front of the pin 5 and turns upwards in back of the pin 5, i.e. the tail of the square shaft section 21 turns to the open groove area 112, the upper surface 201 of the square shaft section can abut against the vertical groove surface of the open groove area 112, and the concave part 23 of the square shaft section 21 is abutted against the inner end surface 303 of the stop block.
In some embodiments, in the working state, the vertical groove bottom surface of the open groove region 112 of the mounting groove 11 and the stopper inner side end surface 303 of the stopper 3 may be provided with a certain clearance.
The connecting mechanism provided by the embodiment of the invention comprises a crank 1, a pedal shaft 2, a stop block 3 and a tension spring. The crank 1 and the pedal shaft 2 can be hinged by a cylindrical pin or a pin shaft 5, the pedal shaft 2 can rotate around the cylindrical pin, the stop block 3 is arranged in the mounting groove 11 between the crank 1 and the pedal shaft 2, two ends of the tension spring can be respectively fixedly connected to the crank 1 and the stop block 3 by self-tapping screws, and the stop block 3 is plugged into a gap between the crank 1 and the mounting groove 11 of the pedal shaft 2 through tension of the tension spring, so that the pedal shaft 2 is limited and prevented from rotating; when the pedal needs to be folded, the stop block 3 is pulled out of the gap between the crank 1 and the mounting groove 11 of the pedal shaft 2, so that the pedal shaft 2 can rotate to a position approximately collinear with the crank 1, and then the stop block 3 is pulled back against the pedal shaft 2 by the tension spring, so that the rotation of the pedal shaft 2 is limited.
In some embodiments, as shown in fig. 3, the upper end of the crank 1 is splined to the sprocket spindle of the bicycle, and the lower end is provided with a mounting groove 11 and a first pivot hole 12. The stepped shaft section at one end (front end) of the pedal shaft 2 is used for connecting the pedal, the square shaft section 21 is arranged at the other end, and the pedal shaft 2 is hinged with the crank 1 through the pin shaft 5 to form a rotary pair.
When the bicycle is ridden, the pedal shaft 2 is attached to the top of the mounting groove 11 of the crank 1, and the stopper is clamped into the gap between the crank 1 and the mounting groove 11 of the pedal shaft 2 due to the tensile force of the tension spring to limit the pedal shaft 2, so that the pedal shaft 2 cannot rotate, and at this time, the pedal shaft 2 and the crank 1 are in a vertical state, namely in a working state, as shown in fig. 6. When the bicycle is transported or stored, the stop block 3 is pulled out backwards, the pedal shaft 2 is rotated to a position approximately collinear with the crank 1, and then the stop block 3 is pulled back to the concave part 23 of the rear end face 203 of the square shaft section of the pedal shaft 2 by a tension spring, so that the rotation of the pedal shaft 2 is limited, namely, the pedal shaft is in an unfolding state, as shown in fig. 7.
Fig. 8 to 12 show another specific example of the pedal shaft connecting mechanism according to the present invention in a form of a rendered perspective view. The principle and the components in this example are the same as those in the previous example, and the four-axis configuration of the stopper is adopted in a different form only at the rear end of the pedal shaft, and only the differences are described below with reference to the drawings, and other identical configurations will not be repeated.
Fig. 8 is a side view perspective view of a pedal shaft connecting mechanism according to still another embodiment of the present invention in which a crank is transparentized in an attempt to see a pedal shaft in a horizontal direction, in which the pedal shaft is in a horizontal direction, a stopper is located at a locking position adjacent to an inner side wall of the deep groove portion and a lower surface of the stopper abuts against a side surface of a rear portion of the pedal shaft, thereby locking the pedal shaft in a horizontal direction. Fig. 9 is a partially enlarged perspective view of an example of the pedal shaft connecting mechanism shown in fig. 8. As best shown in fig. 8 and 9, the upper surface of the stop 3 is provided with a recess 31 for the placement of the resilient biasing member and a first securing structure 6.
Fig. 10 is a perspective view of an example of the pedal shaft connecting mechanism shown in fig. 8, with the pedal shaft connecting mechanism broken away. In this view, the pedal shaft is in a vertical position; the stopper is located in an outer side position away from the inner side wall of the deep groove portion, the pedal shaft is rotatable to a vertical direction position, and an inner side end face of the stopper abuts against the tail portion of the pedal shaft while biasing the tail portion of the pedal shaft toward the inner side wall of the deep groove portion.
FIG. 11 is a partial side perspective view of the example pedal shaft coupling mechanism shown in FIG. 8, shown disassembled; and
Fig. 12 is a further partial side perspective view of the example pedal shaft coupling mechanism shown in fig. 8, shown disassembled. Fig. 11 and 12 show structures of the stopper and the deep groove portion different from the examples shown in fig. 1 to 7.
As shown in fig. 9, 11 and 12, one side surface of the stopper 3 is provided with a side projection 305, and the other side surface is provided with an L-shaped groove 306; the two side walls of the deep groove part are respectively provided with a wall groove 205 corresponding to the side protrusion and a wall protrusion 206 corresponding to the L-shaped groove. Through the mutually matched structures, the stop blocks can be prevented from being separated from the deep groove part through over-drawing, and the stop blocks can be easily installed at the preset positions.
In addition, in the example shown in fig. 8 to 12, the square shaft section 21 of the pedal shaft 2 is not provided with a recess.
According to another aspect of the present invention, there is also provided a bicycle and scooter, the bicycle comprising the aforementioned coupling mechanism, the bicycle employing the coupling mechanism of the present invention, which not only ensures the power input function of conventional pedals, but also can fold the pedal shaft, solving the problem of foot rest occupation during storage and mass transportation.
According to the bicycle and the connecting mechanism thereof, the beneficial effects at least comprise:
(1) The bicycle and the connecting mechanism thereof can flexibly extend or fold the pedal shaft according to the requirements of users, and solve the problem that the pedal occupies space when the bicycle is stored and transported.
(2) The main structure of the connecting mechanism of the embodiment of the invention has only 4 parts, and has the advantages of simple and reliable structure and flexible and convenient use.
(3) The crank and the stop block can be processed by injection molding, and are convenient to manufacture and low in cost.
In this disclosure, features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations can be made to the embodiments of the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pedal shaft connecting mechanism for a bicycle, said connecting mechanism comprising a crank and a pedal shaft for mounting a pedal, characterized in that,
The lower end of the crank is provided with a mounting groove similar to a toppling L-shaped structure, and the mounting groove extends in the direction perpendicular to the bicycle body and is opened towards the bottom, the inner side and the outer side of the crank; the mounting groove comprises a shallow groove part positioned at one side facing to the far end of the pedal shaft and a deep groove part positioned at one side facing to the scooter body; the shallow groove part comprises a through groove area, and the deep groove part comprises an open groove area and a through groove above the open groove area; the open slot area is positioned above the through slot area and is used for installing a stop block or being used as an accommodating space capable of enabling the square shaft section of the crank to turn upwards;
The tail part of the pedal shaft is pivotally mounted to a first pivot hole positioned on the wall of the mounting groove in a manner of being rotatable between a horizontal direction and a vertical direction; the first pivot hole is positioned to be located within a slot area of the deep slot portion;
a stop block which is positioned above the tail part of the pedal shaft and can reciprocate in the horizontal direction is arranged in the bottom area of the deep groove part;
the stop is configured to:
When the pedal shaft is positioned in the horizontal direction, the stopper is positioned at a locking position adjacent to the inner side wall of the deep groove portion and the lower surface of the stopper abuts against the side surface of the tail portion of the pedal shaft, thereby locking the pedal shaft in the horizontal direction;
When the stopper is located at an outer position away from the inner side wall of the deep groove portion, the pedal shaft may be rotated to a vertical direction position, and an inner end surface of the stopper may abut against a rear portion of the pedal shaft while biasing the rear portion of the pedal shaft toward the inner side wall of the deep groove portion.
2. The pedal shaft connecting mechanism according to claim 1, wherein the tail of the pedal shaft is a square shaft section; the square shaft section has a second pivot hole coaxial with the first pivot hole, and the pedal shaft is mounted to the lower end of the crank by a pin shaft penetrating the first pivot hole, the second pivot hole, and the groove wall of the mounting groove.
3. The pedal shaft coupling mechanism in accordance with claim 2 wherein the pedal shaft is substantially collinear with the longitudinal axis of the crank when the pedal shaft is rotated to a vertical orientation.
4. The pedal shaft connecting mechanism according to claim 2, wherein the tail of the pedal shaft is a square shaft section; the upper surface of the square shaft section of the pedal shaft is provided with a first inclined surface, and the lower surface of the stop block is provided with a second inclined surface matched with the first inclined surface.
5. The pedal shaft connecting mechanism according to one of claims 1 to 4, wherein a distal end of the square shaft section of the pedal shaft has a recess, and when the pedal shaft is rotated to a vertical direction, an inner side end surface of the stopper abuts against the recess position of the square shaft section of the pedal shaft.
6. The pedal spindle connection of one of claims 1 to 4 wherein the stop is mounted in the deep slot by a biasing resilient biasing member.
7. The pedal spindle connection according to claim 6, wherein an upper surface of the stopper or both side surfaces perpendicular to the pin shaft are provided with grooves for receiving the biasing elastic biasing member, one end of the biasing elastic biasing member is connected with the first fastening structure of the stopper, and the other end is connected with the second fastening structure of the crank.
8. The pedal spindle connection according to claim 7, wherein the rear end of the stopper is provided with a rough surface structure or a convex/concave operation structure that is easy to be manually operated.
9. The pedal spindle connection mechanism according to claim 6, wherein an upper surface of the stopper is provided with a groove for receiving the biasing resilient biasing member, one side surface of the stopper is provided with a lateral projection, and the other side surface is provided with an L-shaped groove; the two side walls of the deep groove part are respectively provided with a wall groove corresponding to the side bulge and a wall bulge corresponding to the L-shaped groove.
10. The pedal spindle connection according to claim 6, wherein at least one of the crank, stop, and crank shaft is an integrally molded injection molded piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211248033.9A CN115489653B (en) | 2022-10-12 | 2022-10-12 | Pedal shaft connecting mechanism for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211248033.9A CN115489653B (en) | 2022-10-12 | 2022-10-12 | Pedal shaft connecting mechanism for bicycle |
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| CN115489653A CN115489653A (en) | 2022-12-20 |
| CN115489653B true CN115489653B (en) | 2024-04-19 |
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| CN202211248033.9A Active CN115489653B (en) | 2022-10-12 | 2022-10-12 | Pedal shaft connecting mechanism for bicycle |
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| CN115489653A (en) | 2022-12-20 |
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