A crank with pedal quick release and rotary folding

Abstract

The application discloses a crank with a pedal quick release and rotation folding, comprising a crank body, folding mechanisms arranged at two ends of the crank body respectively, the folding mechanism comprising a connecting seat in a hollow structure, elastic members between the inner wall of the connecting seat and the crank body, a positioning table fixed to the outer end of the connecting seat, a positioning groove arranged at the outer end of the connecting seat, a positioning pin matched with the positioning groove, a positioning pin hole matched with the positioning pin arranged in the crank body, and a quick release mechanism arranged at the side of the connecting seat. The folding structure formed by the connecting seat is adopted, the folding of the pedal is realized through the rotation of the connecting seat, the opening and folding states of the pedal are respectively maintained through the first and second positioning grooves, the pedal and the vehicle body are kept parallel when in the folding state, the pedal and the vehicle body are kept perpendicular when in the opening state, the quick release mechanism is utilized to realize the quick disassembly and assembly of the pedal, and more convenience can be provided for users.

Description

A crank with quick-release foot pedal and rotary folding function Technical Field

[0001] This invention relates to a crank with quick-release foot pedal and rotary folding. Background Technology

[0002] The bicycle crank is the part that connects the pedals and the chainring, transferring the kinetic energy from the pedals to the bicycle's drive wheel via the chain on the chainring.

[0003] Currently, conventional bicycle cranks are fixed and cannot be folded. Due to the protruding pedals, they need to be disassembled for packaging and shipping during transportation. With the widespread adoption of online shopping, purchasing bicycles online is now common. However, when consumers receive their bicycles, they need to assemble them themselves. Since the pedals are detached, self-assembly can easily lead to problems such as poor fit between the pedals and crank threads, difficulty in assembly, and the need for additional assembly tools. If consumers take their bicycles to a bicycle shop for assembly, it not only incurs installation fees but also makes the process very cumbersome, greatly wasting the consumer's time and energy.

[0004] For pedals, the pedals can be assembled before shipping, but this requires a lot of packaging space, resulting in wasted packaging space, very large packaging boxes, and increased transportation costs. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a crank with quick-release foot pedal and rotary folding, effectively solving the problems mentioned in the background art.

[0006] The technical solution adopted in this invention is:

[0007] A crank with quick-release foot pedal and rotary folding features includes a crank body. Folding mechanisms are provided at both ends of the crank body. Each folding mechanism includes a hollow connecting seat and an elastic element between the inner wall of the connecting seat and the crank body. A positioning platform is fixed to the outer end of the connecting seat. A positioning groove is formed on the outer end of the positioning platform, and a positioning pin is fitted inside the positioning groove. A positioning pin hole matching the positioning pin is formed inside the crank body. A quick-release mechanism is provided on the side of the connecting seat.

[0008] The quick-release mechanism includes a mounting shaft fixed on a connecting seat, a foot pedal connector, a safety cover, and a compression spring. The safety cover and the foot pedal connector are elastically connected by the compression spring. The outer end of the mounting shaft has a sliding groove. One end of the foot pedal connector is a slider that matches the sliding groove, and the other end is a foot pedal mounting part. The foot pedal mounting part has a foot pedal mounting hole. One end of the safety cover has a first mounting hole that matches the mounting shaft, and the other end has a second mounting hole that matches the foot pedal mounting part. The first mounting hole and the second mounting hole are connected by a connecting hole. The compression spring is located between the second mounting hole and the foot pedal mounting part.

[0009] The quick-release mechanism allows for rapid installation and removal of the pedals without the need for specialized tools.

[0010] Preferably, the foot pedal mounting part is fixed in the second mounting hole by a retaining ring, and a positioning ring is fixed on the outside of the foot pedal mounting part. The retaining ring matches the second mounting hole and is located outside the positioning ring. The retaining ring is fixed to the safety cover by a spring pin.

[0011] Preferably, the positioning groove includes a first positioning groove and a second positioning groove that are perpendicular to each other. When the elastic element is in its maximum extended state, the positioning pin is engaged in the first positioning groove or the second positioning groove.

[0012] The 90° folding is achieved by using the first and second positioning slots that are perpendicular to each other, which ensures folding accuracy and efficiency and makes the folding operation simpler.

[0013] Preferably, the inner end of the elastic element is positioned by a stop block, and the outer end is limited by a limiting platform on the inner side of the connecting seat, the limiting platform protruding from the inner arc surface of the connecting seat.

[0014] Preferably, a stop positioning pin is provided between the stop block and the crank body, and a stop positioning pin hole matching the stop positioning pin is provided on the crank body.

[0015] When the elastic element is in the extended state, the inner end of the connecting seat covers the stop locating pin hole, thereby preventing the stop locating pin from sliding out of the stop locating pin hole.

[0016] Preferably, the outer end of the connector is fitted with a back cover.

[0017] The back cover is used to seal the outer end of the connector, keeping the appearance neat, and at the same time, it can prevent the locating pin from sliding out of the locating pin hole.

[0018] Preferably, the side arc surface of the positioning platform is provided with an external thread, and the inner arc surface of the rear cover is provided with an internal thread that matches the external thread.

[0019] Preferably, the rear cover is provided with an operating hole for driving the rear cover to rotate.

[0020] Preferably, the operating hole is hexagonal and located at the outer end of the rear cover.

[0021] The operating hole is used to rotate the back cover, ensuring that the back cover is firmly fixed to the connecting seat. The operating hole also prevents the back cover from bulging, thus making the structure more reasonable.

[0022] Preferably, the elastic element is a compression spring.

[0023] When the compression spring extends under the action of the restoring force, it is used to engage the positioning pin in the positioning groove. When the connecting seat is pressed to retract, it is used to separate the positioning pin from the positioning groove.

[0024] This invention employs a folding structure formed by a connecting seat. The foot pedal is folded by rotating the connecting seat, and the first and second positioning grooves respectively maintain the open and folded states of the foot pedal. When in the folded state, the foot pedal remains parallel to the main body of the vehicle body, and when in the open state, the foot pedal remains perpendicular to the main body of the vehicle body. At the same time, the quick-release mechanism enables the foot pedal to be quickly disassembled and assembled, providing users with greater convenience.

[0025] This invention can reduce the packaging cost of the entire bicycle. The folded pedals can reduce the thickness of the packaging carton, greatly reducing the cost of the carton. When unpacking the bicycle, the pedals can be opened by simply pressing the connecting seat and inserting the positioning pin into the first positioning groove. No further assembly or special tools are required. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the structure of the present invention;

[0027] Figure 2 is an enlarged structural diagram of part A in Figure 1;

[0028] Figure 3 is a cross-sectional view of the connecting seat;

[0029] Figure 4 is a schematic diagram of the connector;

[0030] Figure 5 is a cross-sectional view of the back cover.

[0031] Figure 6 is a schematic diagram of the back cover structure;

[0032] Figure 7 is a schematic cross-sectional view of the stop block;

[0033] Figure 8 is a schematic diagram of the block structure;

[0034] Figure 9 is a schematic diagram of the crank body;

[0035] Figure 10 is a structural schematic diagram of the quick-release mechanism;

[0036] Figure 11 is a schematic diagram of the safety cover;

[0037] Figure 12 is a structural schematic diagram of the foot pedal connector;

[0038] Figure 13 is a cross-sectional structural diagram of the foot pedal connector. Detailed Implementation

[0039] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Furthermore, in the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0046] As shown in Figure 1-13, a crank with quick-release foot pedal and rotary folding features includes a crank body 1. Folding mechanisms 2 are provided at both ends of the crank body 1. Each folding mechanism 2 includes a hollow connecting seat 21, the hollow portion of which matches the crank body 1, and an elastic element 22 between the inner wall of the connecting seat 21 and the crank body 1. The connecting seat 21 is fitted onto the outer side of the crank body 1 with a gap between them, and the elastic element 22 is located within this gap. A positioning platform 23 is fixed to the outer end of the connecting seat 21. The positioning platform 23 has a positioning groove 24 at the outer end of the connecting seat 21, and a positioning pin 25 is fitted within the positioning groove 24. A positioning pin hole 26 matching the positioning pin 25 is provided inside the crank body 1. Both ends of the positioning pin 25 extend outside the crank body 1, and the portions extending outside the crank body 1 can be inserted into the positioning groove 24. A quick-release mechanism 27 is provided on the side of the connecting seat 21.

[0047] The quick-release mechanism 27 includes a mounting shaft 271 fixed on the connecting seat 21, a foot pedal connector 272, a safety cover 273, and a compression spring 274. The safety cover 273 and the foot pedal connector 272 are elastically connected by the compression spring 274. The outer end of the mounting shaft 271 is provided with a sliding groove 275. One end of the foot pedal connector 272 is a slider 276 that matches the sliding groove 275, and the other end is a foot pedal mounting part 277. The foot pedal mounting part 277 is provided with a foot pedal mounting hole 278. One end of the safety cover 273 is provided with a first mounting hole 279 that matches the mounting shaft 271, and the other end is provided with a second mounting hole 2710 that matches the foot pedal mounting part 277. The first mounting hole 279 and the second mounting hole 2710 are connected by a connecting hole 2711. The compression spring 274 is located between the second mounting hole 2710 and the foot pedal mounting part 277.

[0048] The foot pedal mounting part 277 is fixed in the second mounting hole 2710 by a fixing ring 2712. A positioning ring 2713 is fixed on the outside of the foot pedal mounting part 277. The fixing ring 2712 matches the second mounting hole 2710 and is located outside the positioning ring 2713. The fixing ring 2712 is fixed to the safety cover 273 by a spring pin 2714.

[0049] The positioning groove 24 includes a first positioning groove 241 and a second positioning groove 242 that are perpendicular to each other. When the elastic member 22 is in its maximum extended state, the positioning pin 25 is engaged in the first positioning groove 241 or the second positioning groove 242.

[0050] The inner end of the elastic element 22 is positioned by the stop block 28, and the outer end is limited by the limiting platform 29 on the inner side of the connecting seat 21.

[0051] A stop block positioning pin 210 is provided between the stop block 28 and the crank body 1. The crank body 1 has a stop block positioning pin hole 211 that matches the stop block positioning pin 210. The stop block 28 also has a pin hole that matches the stop block positioning pin 210.

[0052] The outer end of the connector 21 is fitted with a back cover 212.

[0053] The positioning platform 23 has an external thread on its side arc surface, and the rear cover 212 has an internal thread that matches the external thread on its inner arc surface.

[0054] The rear cover 212 is provided with an operation hole 213 for driving the rear cover 212 to rotate.

[0055] The operating hole 213 is hexagonal and located at the center of the outer end of the rear cover 212.

[0056] The elastic element 22 is a compression spring.

[0057] Figures 3 and 4 are schematic diagrams of the connecting seat 21. The hollow part of the connecting seat 21 matches the crank body 1, and the elastic element 22 is installed between the crank body 1 and the connecting seat 21. The left end of the elastic element 22 is positioned by the stop block 28, and the right end is limited by the limiting platform 29 on the inner side of the connecting seat 21. The side of the connecting seat 21 is equipped with the foot pedal by the quick release mechanism 27. The first positioning groove 241 and the second positioning groove 242 on the right end of the connecting seat 21 are used to fix the positioning pin 25. When the positioning pin 25 is in the first positioning groove 241, the foot pedal is in the unfolded state. When the positioning pin 25 is in the second positioning groove 242, the foot pedal is in the folded state.

[0058] Figures 5 and 6 are schematic diagrams of the back cover. The back cover 212 is used to close the outer end of the connecting seat 21 to maintain a neat appearance. At the same time, the back cover 212 can prevent the positioning pin 25 from sliding out of the positioning pin hole 26. The operating hole 213 on the back cover 212 is used to rotate the back cover 212, thereby ensuring that the back cover 212 can be firmly fixed on the connecting seat 21. Furthermore, the operating hole 213 will not cause the back cover 212 to bulge, thus making the structure more reasonable.

[0059] Figures 7 and 8 are schematic diagrams of the block structure. The block 28 is fixed to the crank body 1 by the block positioning pin 210. In the extended state, the inner end of the connecting seat 21 can cover the block positioning pin 210, thereby preventing the block positioning pin 210 from sliding out of the block positioning pin hole 211. The block 28 is used to limit the inner end of the elastic member 22.

[0060] Figure 9 is a schematic diagram of the crank body. The two ends of the crank body 1 are connected to the pedals via the folding mechanism 2, thereby enabling the pedals to be folded and unfolded.

[0061] Figure 10 is a structural schematic diagram of the quick-release mechanism 27, including a mounting shaft 271 fixed on the connecting seat 21, a foot pedal connector 272, a safety cover 273, and a compression spring 274. The safety cover 273 and the foot pedal connector 272 are elastically connected by the compression spring 274. One end of the compression spring 274 is fixed to the safety cover 273, and the other end is fixed to the foot pedal connector 272. The outer end of the mounting shaft 271 is provided with a sliding groove 275, and a pair of limiting blocks 2715 are provided at the opening of the sliding groove 275. One end of the foot pedal connector 272 is a slider 276 that matches the sliding groove 275. The side of the slider 276 is provided with a groove that matches the limiting block 2715. The other end is a foot pedal mounting part 277, on which a... The foot pedal mounting hole 278 is used to fix the foot pedal. One end of the safety cover 273 has a first mounting hole 279 that matches the mounting shaft 271, and the other end has a second mounting hole 2710 that matches the foot pedal mounting part 277. The first mounting hole 279 and the second mounting hole 2710 are connected by a connecting hole 2711. The inner diameter of the connecting hole 2711 is smaller than that of the first mounting hole 279 and the second mounting hole 2710, thereby forming a boss between the first mounting hole 279 and the second mounting hole 2710. One side of the boss abuts against the mounting shaft 271, and the other side abuts against the compression spring 274, realizing dual positioning of both sides. The compression spring 274 is located between the second mounting hole 2710 and the foot pedal mounting part 277.

[0062] The foot pedal mounting part 277 is fixed in the second mounting hole 2710 by a fixing ring 2712. A positioning ring 2713 is fixed on the outer side of the foot pedal mounting part 277, and the positioning ring 2713 is close to the outer end of the second mounting hole 2710. The fixing ring 2712 matches the second mounting hole 2710 and is located outside the positioning ring 2713. The fixing ring 2712 is fixed to the safety cover 273 by a spring pin 2714. The fixing ring 2712 and the safety cover 273 have multiple matching spring pin holes. The spring pin 2714 passes through the spring pin holes on the fixing ring 2712 and the safety cover 273 to fix the fixing ring 2712 and the safety cover 273. The foot pedal is fixed in the foot pedal mounting hole 278, and the slider 276 is separated from the slide groove 275. The safety cover 273, the compression spring 274, the foot pedal connector 272, and the fixing ring 2712 are all assembled and fixed together. When the foot pedal needs to be installed, simply press the compression spring 274 to make the slider 276 protrude outside the safety cover 273. Then slide the slider 276 into the slide groove 275, and finally release the compression spring 274. This completes the installation of the foot pedal. Compared with the technical solution of directly setting the foot pedal mounting hole 278 on the connecting seat 21, this eliminates the complicated installation process of installing the foot pedal into the foot pedal mounting hole 278, greatly improving the efficiency of foot pedal installation and disassembly, and reducing the difficulty.

[0063] Working principle of the invention:

[0064] When transportation is required, the bicycle is folded so that the pedals are parallel to the main body. The specific operation method is as follows: press the connecting seat 21 inward by hand, so that the elastic element 22 retracts. As the elastic element 22 retracts, the positioning pin 25 leaves the first positioning groove 241. Then rotate the connecting seat 21. When the positioning pin 25 rotates to the second positioning groove 242, release the pressure on the connecting seat 21. The connecting seat 21 descends under the restoring force of the elastic element 22, and the positioning pin 25 is inserted into the second positioning groove 242. This completes the folding, and the bicycle can then be packaged and transported.

[0065] When you need to open the pedals for riding, perform the opening operation as follows: Press the connecting seat 21 inward with your hand, causing the elastic element 22 to retract. As the elastic element 22 retracts, the positioning pin 25 leaves the second positioning groove 242. Then rotate the connecting seat 21. When the positioning pin 25 rotates to the first positioning groove 241, release the pressure on the connecting seat 21. The connecting seat 21 descends under the restoring force of the elastic element 22, and the positioning pin 25 is engaged in the first positioning groove 241. This completes the folding and opening process, and you can now ride normally.

[0066] The folding and unfolding operation of this invention is very simple and convenient, and it can stably maintain the folded and unfolded state, ensuring that it will not have an adverse effect on transportation and riding.

[0067] This invention utilizes a quick-release mechanism 27 to achieve rapid assembly and disassembly between the pedal and the connecting seat 21, thereby simplifying the pedal assembly and disassembly structure and enabling ordinary users to quickly assemble and disassemble the pedal. It provides greater convenience to users when they need to assemble or disassemble the pedal. For example, when the pedal is damaged and needs to be replaced, the user only needs to remove the pedal from the connecting seat and replace it with a new pedal, without having to send the entire bicycle to a repair shop. Furthermore, users can change the style of the pedals on different days according to their personal preferences, thereby meeting their personalized needs.

[0068] Foot pedal removal method: Press the compression spring 274 to make the slider 276 protrude outside the safety cover 273. Then slide the slider 276 out of the groove 275. Finally, release the compression spring 274 to complete the removal of the foot pedal.

[0069] Foot pedal installation method: Press the compression spring 274 so that the slider 276 protrudes outside the safety cover 273. Then slide the slider 276 into the groove 275. Finally, release the compression spring 274 to complete the installation of the foot pedal.

[0070] Finally, it should be noted that the above examples are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this invention should be considered within the scope of protection of this invention.

Claims

1. A crank with quick-release foot pedal and rotary folding mechanism, characterized in that, The crank body (1) includes a crank body (1), and folding mechanisms (2) are provided at both ends of the crank body (1). The folding mechanism (2) includes a hollow connecting seat (21) and an elastic element (22) between the inner wall of the connecting seat (21) and the crank body (1). A positioning platform (23) is fixed to the outer end of the connecting seat (21). The positioning platform (23) has a positioning groove (24) at the outer end of the connecting seat (21). A positioning pin (25) is matched in the positioning groove (24). A positioning pin (25) is provided in the crank body (1). The positioning pin (25) has a matching positioning pin hole (26). The side of the connecting seat (21) is provided with a quick-release mechanism (27). The quick-release mechanism (27) includes a mounting shaft (271) fixed on the connecting seat (21), a foot pedal connector (272), a safety cover (273), and a compression spring (274). The safety cover (273) and the foot pedal connector (272) are elastically connected by the compression spring (274). The outer end of the mounting shaft (271) is provided with a sliding groove (275). The foot pedal connector (272) One end is a slider (276) that matches the slide groove (275), and the other end is a foot pedal mounting part (277). The foot pedal mounting part (277) has a foot pedal mounting hole (278). One end of the safety cover (273) has a first mounting hole (279) that matches the mounting shaft (271), and the other end has a second mounting hole (2710) that matches the foot pedal mounting part (277). The first mounting hole (279) and the second mounting hole (2710) are connected by a connecting hole (2711). The compression spring (274) is located between the second mounting hole (2710) and the foot pedal mounting part (277). The foot pedal mounting part (277) is fixed in the second mounting hole (2710) by a fixing ring (2712). A positioning ring (2713) is fixed on the outside of the foot pedal mounting part (277). The fixing ring (2712) matches the second mounting hole (2710) and is located outside the positioning ring (2713). The fixing ring (2712) is fixed to the safety cover (273) by a spring pin (2714).

2. A crank with quick-release foot pedal and rotary folding as described in claim 1, characterized in that, The positioning groove (24) includes a first positioning groove (241) and a second positioning groove (242) that are perpendicular to each other. When the elastic member (22) is in the maximum extended state, the positioning pin (25) is engaged in the first positioning groove (241) or the second positioning groove (242).

3. A crank with quick-release foot pedal and rotary folding as described in claim 1, characterized in that, The inner end of the elastic element (22) is positioned by the stop block (28), and the outer end is limited by the limiting platform (29) on the inner side of the connecting seat (21).

4. A crank with quick-release foot pedal and rotary folding as described in claim 3, characterized in that, A stop block positioning pin (210) is provided between the stop block (28) and the crank body (1), and a stop block positioning pin hole (211) matching the stop block positioning pin (210) is provided on the crank body (1).

5. A crank with quick-release foot pedal and rotary folding as described in claim 1, characterized in that, The outer end of the connector (21) is fitted with a back cover (212).

6. A crank with quick-release foot pedal and rotary folding as described in claim 5, characterized in that, The positioning platform (23) has an external thread on its side arc surface, and the rear cover (212) has an internal thread that matches the external thread on its inner arc surface.

7. A crank with quick-release foot pedal and rotary folding as described in claim 6, characterized in that, The rear cover (212) is provided with an operation hole (213) for driving the rear cover (212) to rotate.

8. A crank with quick-release foot pedal and rotary folding as described in claim 7, characterized in that, The operation hole (213) is hexagonal and located at the outer end of the rear cover (212).

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