A quick release crank assembly

Abstract

The utility model provides a quick detachable crank assembly relates to bicycle accessory technical field, including connecting piece, the one end of connecting piece is installed with detachable crank member, the one end of crank member away from connecting piece is provided with rotatable foot rest spare, connecting piece includes pivot, the peripheral surface of pivot is annular array and forms a plurality of insertion hole, the utility model is provided with pivot, first base ring, side groove, insertion hole, spring and rotating part, when the pivot inserts first base ring, the pulling force of spring drives rotating part to move, makes its one end to embed insertion hole on the pivot after passing side groove, thereby completes the rigid connection of crank part and first base ring and pivot, needs to disassemble crank part and changes, only needs to pull rotating part and makes it separate insertion hole, can separate first base ring and crank part, further realizes the quick connection of crank part, reduces the operation difficulty of crank change, and promotes the change efficiency of crank.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts technology, and in particular to a quick-release crank assembly. Background Technology

[0002] A bicycle is a two-wheeled vehicle propelled by human pedaling and chain drive. It primarily consists of a frame, wheels, drivetrain, braking system, and steering system. The crank is a crucial component in the drivetrain, connecting the pedals and chainrings. The force of pedaling is transmitted through the crank to the chain, propelling the bicycle forward. Cranks are typically made of aluminum alloy, carbon fiber, or other metal alloys. Currently, cranks are usually directly bolted to the axle connected to the sprocket, making crank replacement time-consuming, difficult, and inefficient. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model proposes a quick-release crank assembly.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A quick-release crank assembly includes a connector, one end of which is fitted with a detachable crank component, and the end of the crank component away from the connector is provided with a rotatable pedal component. The connector includes a pivot, the circumferential surface of which forms a plurality of insertion holes in a circular array. The crank component includes a crank portion for connecting to the pedal component, and the end of the crank portion away from the pedal component is fixedly connected to a first connecting portion for connecting to the pivot.

[0006] The first connecting part includes a first base ring, on which a shaft hole for inserting a rotating shaft is formed along its own axis, and one end of the first base ring forms a plurality of side grooves in a ring array. The side grooves are matched with the insertion holes one by one, and a rotating part is rotatably connected inside the side groove. A spring is fixedly connected between the rotating part and the inner wall of the side groove. Part of the rotating part passes through the side groove and is inserted into the interior of the insertion hole.

[0007] Preferably, a notched ring portion is rotatably connected between the free ends of the plurality of rotating parts. The notched ring portion includes a notched ring, and the circumferential surface of the notched ring is recessed in a ring array to form a plurality of notched grooves. The notched grooves are matched one by one with the rotating parts, and the free ends of the rotating parts are rotatably connected to the inside of the notched grooves.

[0008] Preferably, a pull rod is fixedly connected at the middle position of the notched ring, and a gap is formed between the notched ring and the pull rod.

[0009] Preferably, the rotating part includes a rotating frame and a connecting frame. The connecting frame is fixedly connected to the inside of the side groove, and the rotating frame is rotatably connected to the connecting frame. The spring is installed between the rotating frame and the side groove. A plug is fixedly connected to one side of the rotating frame, and the plug matches the socket.

[0010] Preferably, the circumferential surface of the rotating shaft is recessed to form multiple inclined grooves, each of which matches a socket, and the inclined grooves are inclined towards the axis from one side near the socket to the other side.

[0011] Preferably, the foot pedal includes a rotating head, which is rotatably connected to the crank portion, and one end of the rotating head is rotatably connected to a foot pedal.

[0012] Preferably, both sides of the foot pedal are recessed to form a placement cavity, and a spoke lamp is fixedly connected inside the placement cavity. A light-transmitting plate for shielding the spoke lamp is also installed inside the placement cavity. A groove is formed on one side of the light-transmitting plate, and the groove matches the spoke lamp.

[0013] Preferably, the crank portion includes a crank body, one end of which is fixedly connected to a second connecting part for connecting a swivel head, one side of which is fixedly connected to the crank body, and the end of the crank body away from the second connecting part is fixedly connected to a first base ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model is provided with a rotating shaft, a first base ring, a side groove, an insertion hole, a spring, and a rotating part. When the rotating shaft is inserted into the first base ring, the tension generated by the spring drives the rotating part to move, so that one end of it passes through the side groove and is embedded in the insertion hole on the rotating shaft, thereby completing the rigid connection between the crank part and the first base ring and the rotating shaft. When the crank part needs to be disassembled for replacement, it is only necessary to pull the rotating part to disengage it from the insertion hole, thereby separating the first base ring and the crank part, thus realizing the quick connection of the crank part, reducing the difficulty of crank replacement operation, and improving the crank replacement efficiency.

[0016] 2. This utility model is equipped with a notched ring and a notched groove, which can further optimize the disassembly process of the crank. Furthermore, the notched groove forms a linkage structure with multiple rotating frames. When a single notched ring is pulled, the mechanical transmission action of the notched groove will synchronously drive all connected rotating frames to rotate. This allows the operator to achieve the synchronous action of multiple rotating frames with only a single pull of the notched ring, thereby quickly completing the disassembly and replacement of the crank, further simplifying the operation steps and improving efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the connector of this utility model;

[0020] Figure 3 This is a cross-sectional view of the crank component of this utility model;

[0021] Figure 4 This is a perspective view of the foot pedal component of this utility model;

[0022] Figure 5 This is a cross-sectional view of the first connecting part of this utility model;

[0023] Figure 6 This is a perspective view of the rotating part of this utility model;

[0024] Figure 7 This is a perspective view of the notched ring portion of this utility model;

[0025] In the diagram: 1. Connector; 11. Shaft; 12. Insertion hole; 13. Slant groove; 2. Crank assembly; 21. Crank body; 22. Second connecting part; 23. First connecting part; 231. First base ring; 232. Side groove; 233. Notched ring part; 2331. Notched ring; 2332. Notched groove; 2333. Pull rod; 234. Rotating part; 2341. Rotating frame; 2342. Connecting frame; 2343. Plug; 235. Spring; 3. Foot pedal assembly; 31. Rotating head; 32. Foot pedal; 33. Placement cavity; 34. Spoke lamp; 35. Light-transmitting plate; 36. Groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-7As shown, a quick-release crank assembly includes a connector 1, a detachable crank part 2 is mounted on one end of the connector 1, and a rotatable pedal part 3 is provided at the end of the crank part 2 away from the connector 1. The connector 1 includes a pivot 11, and the circumferential surface of the pivot 11 forms a plurality of insertion holes 12 in a ring array. The crank part 2 includes a crank portion for connecting the pedal part 3, and a first connecting part 23 for connecting the pivot 11 is fixedly connected at the end of the crank portion away from the pedal part 3.

[0028] The first connecting part 23 includes a first base ring 231. The first base ring 231 has a shaft hole formed along its own axis for the insertion of the rotating shaft 11. One end of the first base ring 231 forms a plurality of side grooves 232 in a ring array. The side grooves 232 are matched with the insertion holes 12 one by one. A rotating part 234 is rotatably connected inside the side groove 232. A spring 235 is fixedly connected between the rotating part 234 and the inner wall of the side groove 232. Part of the rotating part 234 passes through the side groove 232 and is inserted into the interior of the insertion hole 12.

[0029] With the above technical solution, in use, one end of the connector 1 is first connected to the bicycle frame, and then the first base ring 231 at one end of the crank part is fitted onto one end of the shaft 11. When the end of the shaft 11 is inserted into the shaft hole on the first base ring 231, the rotating part 234 is supported by the side groove 232 on the first base ring 231, and the rotating part 234 is also supported by the spring 235, so that the rotating part 234 has a tendency to rotate toward the insertion hole 12. After the rotating part 234 passes through the side groove 232, it is inserted into the insertion hole 12 on the shaft 11, thereby allowing the first base ring 231 and the shaft 11 to... The connection is as follows: the crank part is supported by the first base ring 231, and the pedal part is supported by the crank part. When the rider steps on the pedal part 3, the pedal part 3 rotates, which in turn causes the crank part and the first base ring 231 to drive the shaft 11 to rotate. The shaft 11 drives the sprocket on the frame, thereby moving the bicycle. When the crank part needs to be removed, press the rotating part 234 in the side groove 232 to rotate it, so that the rotating part 234 separates from the socket 12. Then, the crank part and the first base ring 231 can be pulled to separate from the shaft 11, and the crank part, the first base ring 231 and the pedal part 3 can be removed for replacement.

[0030] In order to synchronously control multiple rotating parts 234, such as Figure 1 , Figure 3 , Figures 5-7 As shown, a notched ring portion 233 is rotatably connected between the free ends of multiple rotating portions 234. The notched ring portion 233 includes a notched ring 2331. The circumferential surface of the notched ring 2331 is arranged in a ring array to form multiple notched grooves 2332. The notched grooves 2332 are matched one by one with the rotating portions 234, and the free ends of the rotating portions 234 are rotatably connected to the inside of the notched grooves 2332.

[0031] In this embodiment, when it is necessary to disassemble the first base ring 231 and the crank part, the notched ring 2331 is pulled, and the notched ring 2331 drives multiple rotating parts 234 to rotate. Furthermore, through the notched groove 2332 on the notched ring 2331, multiple rotating parts 234 are driven to rotate synchronously, so that the rotating parts 234 are separated from the insertion hole 12. This allows personnel to control multiple rotating parts 234 in one operation, thereby improving the disassembly efficiency of the first base ring 231 and the crank part.

[0032] In addition, in this utility model, to make the first base ring 231 easier to pull, such as Figure 7 As shown, a pull rod 2333 is fixedly connected at the middle position of the notched ring 2331, and a gap is formed between the notched ring 2331 and the pull rod 2333.

[0033] In this embodiment, when a person needs to pull the notched ring 2331, the notched ring 2331 is easily pulled by the pull rod 2333 and the clearance fit, thereby improving the convenience of operating the notched ring 2331.

[0034] Specifically, in one embodiment, regarding the aforementioned rotating portion 234, as... Figure 3 , Figure 5 and Figure 6 As shown, the rotating part 234 includes a rotating frame 2341 and a connecting frame 2342. The connecting frame 2342 is fixedly connected to the inside of the side groove 232. The rotating frame 2341 is rotatably connected to the connecting frame 2342. The spring 235 is installed between the rotating frame 2341 and the side groove 232. A plug 2343 is fixedly connected to one side of the rotating frame 2341. The plug 2343 matches the socket 12.

[0035] In this embodiment, when the rotating shaft 11 is inserted into the first base ring 231, the rotating shaft 11 will squeeze the plug 2343, causing the plug 2343 to stretch the spring 235, thus giving the spring 235 a tendency to retract. When the plug 2343 is close to the socket 12, the spring 235 pulls the rotating frame 2341 to rotate back around the connecting frame 2342, thereby driving the plug 2343 to rotate, so that the plug 2343 passes through the side groove 232 and is inserted into the socket 12 on the rotating shaft 11, thereby completing the connection between the rotating shaft 11 and the first base ring 231. When it is necessary to disassemble the first base ring 231 and the crank part, pull the notch ring 2331. Through the notch groove 2332 on the notch ring 2331, the rotating frame 2341 rotates around the notch groove 2332, thereby driving the plug 2343 away from the socket 12, thus pulling the first base ring 231 and the crank part away from the rotating shaft 11, making the first base ring 231 and the crank part easy to replace.

[0036] To facilitate guiding plug 2343, such as Figure 2As shown, the circumferential surface of the rotating shaft 11 is recessed to form multiple inclined grooves 13, which are matched one by one with the insertion holes 12, and the inclined grooves 13 are inclined towards the axis position from one side of the insertion hole 12 to the other side.

[0037] In this embodiment, when the rotating shaft 11 is inserted into the first base ring 231, the plug 2343 is facilitated to move into the socket 12 by the inclined groove 13, thereby facilitating the connection of the plug 2343 with the rotating shaft 11.

[0038] Specifically, in one embodiment, regarding the aforementioned foot pedal 3, as... Figure 1 and Figure 4 As shown, the foot pedal 3 includes a rotating head 31, which is rotatably connected to the crank portion, and a foot pedal 32 is rotatably connected to one end of the rotating head 31.

[0039] In this embodiment, when the pedal device is needed, the person steps on the foot pedal 32, causing the foot pedal 32 to rotate around the rotating head 31, thereby causing the crank part, the first base ring 231, and the rotating shaft 11 to rotate.

[0040] To improve the nighttime visibility of the device, such as Figure 1 and Figure 4 As shown, the foot pedal 32 has recessed sides to form placement cavities 33. A spoke lamp 34 is fixedly connected inside the placement cavity 33, and a light-transmitting plate 35 for shielding the spoke lamp 34 is also installed inside the placement cavity 33. A groove 36 is formed on one side of the light-transmitting plate 35, and the groove 36 matches the spoke lamp 34.

[0041] In this embodiment, the spoke lamp 34 is housed in the placement cavity 33 on the foot pedal 32, and the spoke lamp 34 is protected by the light-transmitting plate 35. When the foot pedal 32 is rotated, the spoke lamp 34 is lit due to centrifugal force, thereby warning people in the surrounding area.

[0042] Specifically, in one embodiment, regarding the aforementioned crank portion, as... Figure 1 and Figure 3 As shown, the crank portion includes a crank body 21, one end of which is fixedly connected to a second connecting part 22 for connecting a swivel head 31, one side of which is fixedly connected to the crank body 21, and the end of the crank body 21 away from the second connecting part 22 is fixedly connected to a first base ring 231.

[0043] In this embodiment, when a person steps on the foot pedal 32, the foot pedal 32 and the rotating head 31 work together to drive the crank body 21, the first base ring 231 and the rotating shaft 11 to rotate.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release crank assembly, characterized in that: The device includes a connector (1), one end of which is fitted with a detachable crank (2), and the crank (2) is provided with a rotatable pedal (3) at the end away from the connector (1). The connector (1) includes a pivot (11), and the circumferential surface of the pivot (11) is arranged in a ring array to form a plurality of insertion holes (12). The crank (2) includes a crank portion for connecting the pedal (3), and the end of the crank portion away from the pedal (3) is fixedly connected to a first connecting part (23) for connecting the pivot (11). The first connecting part (23) includes a first base ring (231). The first base ring (231) has a shaft hole formed along its own axis for the shaft (11) to be inserted. One end of the first base ring (231) forms a plurality of side grooves (232) in a ring array. The side grooves (232) are matched with the insertion holes (12) one by one. A rotating part (234) is rotatably connected inside the side groove (232). A spring (235) is fixedly connected between the rotating part (234) and the inner wall of the side groove (232). Part of the rotating part (234) passes through the side groove (232) and is inserted into the inside of the insertion hole (12).

2. The quick-release crank assembly according to claim 1, characterized in that: A notched ring portion (233) is rotatably connected between the free ends of the plurality of rotating parts (234). The notched ring portion (233) includes a notched ring (2331). The circumferential surface of the notched ring (2331) is arranged in a ring array to form a plurality of notched grooves (2332). The notched grooves (2332) are matched one by one with the rotating parts (234), and the free ends of the rotating parts (234) are rotatably connected to the inside of the notched grooves (2332).

3. The quick-release crank assembly according to claim 2, characterized in that: A pull rod (2333) is fixedly connected at the middle position of the notched ring (2331), and a gap is formed between the notched ring (2331) and the pull rod (2333).

4. The quick-release crank assembly according to any one of claims 1-3, characterized in that: The rotating part (234) includes a rotating frame (2341) and a connecting frame (2342). The connecting frame (2342) is fixedly connected to the inside of the side groove (232). The rotating frame (2341) is rotatably connected to the connecting frame (2342). The spring (235) is installed between the rotating frame (2341) and the side groove (232). A plug (2343) is fixedly connected to one side of the rotating frame (2341). The plug (2343) matches the socket (12).

5. The quick-release crank assembly according to any one of claims 1-3, characterized in that: The circumferential surface of the rotating shaft (11) is recessed to form a plurality of inclined grooves (13), which are matched one by one with the insertion holes (12), and the inclined grooves (13) are inclined towards the axis position from one side of the insertion hole (12) to the other side.

6. The quick-release crank assembly according to any one of claims 1-3, characterized in that: The foot pedal (3) includes a rotating head (31), which is rotatably connected to the crank portion, and a foot pedal (32) is rotatably connected to one end of the rotating head (31).

7. The quick-release crank assembly according to claim 6, characterized in that: The foot pedal (32) has recessed sides on both sides to form placement cavities (33). A spoke lamp (34) is fixedly connected inside the placement cavity (33), and a light-transmitting plate (35) for shielding the spoke lamp (34) is also installed inside the placement cavity (33). A groove (36) is formed on one side of the light-transmitting plate (35), and the groove (36) matches the spoke lamp (34).

8. The quick-release crank assembly according to claim 7, characterized in that: The crank portion includes a crank body (21), one end of which is fixedly connected to a second connecting part (22) for connecting a swivel head (31), and the crank body (21) is fixedly connected to one side of the second connecting part (22), and the end of the crank body (21) away from the second connecting part (22) is fixedly connected to a first base ring (231).

Images