A bicycle crank dismounting tool

Abstract

The application discloses a bicycle crank dismounting tool, and belongs to the technical field of bicycle dismounting tools. The bicycle crank dismounting tool comprises a force applying piece connected with a crank arm and limiting the crank arm, a supporting assembly arranged on the force applying piece, a bolt wrench for screwing a bolt being detachably arranged on the supporting assembly, and a relative movement between the supporting assembly and the force applying piece is used to make the bolt relatively rotate with the crank arm; and an acting assembly arranged on the force applying piece is used to push the supporting assembly to relatively move with the force applying piece. The bicycle crank dismounting tool has the beneficial effect of facilitating dismounting, because the force applying piece is arranged to limit the crank arm, so that the crank arm cannot rotate with the bolt when the bolt is dismounted.

Description

Technical Field

[0001] This application relates to the field of bicycle disassembly tools, and more specifically, to a bicycle crank disassembly tool. Background Technology

[0002] A bicycle, also known as a cyclist, has a crank as a crucial component, primarily responsible for transmitting power. It typically includes a sprocket, a crank arm fixed to the sprocket, and pedals mounted on the crank arm. When we pedal, the crank arm drives the sprocket and chain, causing the wheel to rotate and propelling the bicycle forward. However, the crank arm on most bicycles is usually fixed in place with bolts. When disassembly is needed, the crank arm must be restrained to prevent the crank from rotating with the bolts. This makes disassembly difficult, requiring the operator to stabilize the crank arm with one hand while removing it with the other. Furthermore, when the bolts are tight, a significant torque is required to remove them.

[0003] Therefore, a bicycle crank removal tool is needed to solve the above problems. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a bicycle crank disassembly tool, comprising: a force-applying component connected to the crank arm and limiting the crank arm; a support assembly disposed on the force-applying component, on which a bolt wrench for tightening a bolt is detachably mounted, such that the bolt and the crank arm rotate relative to each other through relative movement between the support assembly and the force-applying component; and an actuating component disposed on the force-applying component, which pushes the support assembly and the force-applying component to move relative to each other.

[0006] Furthermore, the force-applying component includes: a hook-shaped part hooked onto the crank arm, the hook-shaped part being a ring structure with a notch; a rod part, the hook-shaped part being fixedly disposed at one end of the rod part, a support assembly being disposed on the rod part, the portion of the support assembly on the rod part moving along the length direction of the rod part; and a lead screw section disposed on the rod part.

[0007] Furthermore, the support assembly includes: a mounting part on which a bolt wrench is mounted; a connecting part fixed to the mounting part; and a rotating member rotatably mounted on the connecting part, with a rod passing through the rotating member so that the rotating member can move along the length of the rod.

[0008] Furthermore, the functional component includes: a rotating member, sleeved on the rod, located on the side of the rotating member away from the hook-shaped part, the rotating member having a threaded hole that mates with the thread of the lead screw section; a contact member, sleeved on the rod and sliding, located on the side of the rotating member close to the rotating member, one end of the contact member abutting against the connecting part; and a spacer member, sleeved on the rod and located between the rotating member and the contact member.

[0009] Furthermore, the connecting part is provided with a mounting hole for mounting a rotating component. The rotating component passes through the mounting hole. One end of the rotating component is fixedly provided with a side stop that abuts against the surface of the connecting part. The side stop limits the rotation of the rotating component. The other end of the rotating component is provided with a mounting stop that abuts against the surface of the connecting part to limit the rotation of the rotating component.

[0010] Furthermore, one end of the rotating component is provided with a mounting screw hole, and a mounting stud is fixed on the mounting flange. The mounting stud is screwed into the mounting screw hole and threadedly connected to the mounting screw hole.

[0011] Furthermore, the rotating component is provided with two anti-slip protrusions, and the anti-slip protrusions are provided with anti-slip textures.

[0012] Furthermore, the two end faces of the spacer that contact the contact member and the rotating member have contact portions.

[0013] The beneficial effects of this application are as follows:

[0014] 1. By setting the force-applying component, the crank arm is limited so that it will not rotate with the bolt when the bolt is removed, making disassembly convenient.

[0015] 2. By using the support components, when the force-applying component moves relative to the support components, the bolt can also rotate relative to the crank arm, thereby disassembling the bolt.

[0016] 3. By using the designed function components, when the rotating part is rotated, it can push the support component and the force-applying component to move relative to each other, thus avoiding the difficulty of disassembly caused by tight bolts. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0018] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0019] In the attached diagram:

[0020] Figure 1This is an overall schematic diagram according to one embodiment of the present application;

[0021] Figure 2 yes Figure 1 Exploded structural diagram of the embodiment;

[0022] Figure 3 yes Figure 1 A schematic diagram of the installation structure of the embodiment;

[0023] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle;

[0024] Figure 5 yes Figure 1 The diagram illustrates the function of the embodiment;

[0025] Figure 6 yes Figure 1 A schematic diagram of the rotating component in the embodiment;

[0026] Figure 7 yes Figure 1 The schematic diagram of the rotating component in the embodiment is shown.

[0027] Figure label:

[0028] 10. Force-applying component; 11. Support assembly; 12. Actuating component; 13. Hook-shaped part; 14. Rod part; 15. Lead screw section; 16. Mounting part; 17. Connecting part; 18. Rotating component; 19. Sliding hole; 20. Side stop; 21. Mounting stop; 22. Mounting hole; 23. Contact component; 24. Separator; 25. Rotating component; 26. Bolt wrench; 27. Mounting stud; 28. Mounting screw hole; 29. ​​Threaded hole; 30. Anti-slip protrusion; 31. Contact part. Detailed Implementation

[0029] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0030] It should also be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0031] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0032] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0033] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Reference Figure 1-7 A bicycle crank removal tool includes: a force-applying component 10, a support assembly 11, a bolt wrench 26, an actuating component 12, a hook-shaped portion 13, a rod portion 14, and a lead screw section 15. The force-applying component 10 includes the hook-shaped portion 13 and the rod portion 14. The hook-shaped portion 13 is a ring-shaped structure with a notch, capable of hooking onto the mounting shaft of the pedal component on the crank arm. The notch in the hook-shaped portion 13 allows the mounting shaft of the pedal component to pass through. The crank arm and pedal component can refer to existing products, with the pedal component rotatably mounted on one end of the crank arm via the mounting shaft. In one embodiment, the rod portion 14 and the hook-shaped portion 13 are integrally formed, and the hook-shaped portion 13 is formed by bending. In another embodiment, the rod portion 14 can also be detachably connected to the hook-shaped portion 13, such as through a threaded connection, allowing for the replacement of hook-shaped portions 13 of different sizes. The rod portion 14 has a lead screw section 15.

[0035] The support assembly 11 includes a mounting portion 16, a connecting portion 17, and a rotating member 18. Different types of bolt wrenches 26 are detachably mounted on the mounting portion 16, each wrench matching a bolt type. In one embodiment, the mounting portion 16 has a hole for inserting the bolt wrench 26. The connecting portion 17 is fixed to one end of the mounting portion 16 and has a mounting hole 22. The rotating member 18 is installed in the mounting hole 22 and can rotate around its own axis. The rod portion 14 passes through the rotating member 18, allowing the rotating member 18 to move along the length of the rod portion 14. When the rotating member 18 moves along the length of the rod portion 14, it causes the bolt and crankshaft to rotate relative to each other.

[0036] One end of the rotating component 18 is fixedly provided with a side stop 20 that abuts against the surface of the connecting part 17, limiting the rotation of the rotating component 18. The other end of the rotating component 18 is equipped with a mounting stop 21, which abuts against the surface of the connecting part 17 to limit the rotation of the rotating component 18. In one embodiment, one end of the rotating component 18 has a mounting screw hole 28, and a mounting stud 27 is fixed on the mounting stop 21. The mounting stud 27 is screwed into the mounting screw hole 28 and threadedly connected to it. By inserting the rotating component 18 into the mounting hole 22 and then installing the mounting stop 21, the rotating component 18 is limited.

[0037] The actuating component 12 includes a rotating member 25, a contact member 23, and a spacer 24. The rotating member 25 is sleeved on the rod portion 14, located on the side of the rotating member 18 away from the hook-shaped portion 13. The rotating member 25 has a threaded hole 29 that threadedly engages with the lead screw section 15. When the rotating member 25 is rotated, it can push the rotating member 18 to move on the rod portion 14. The contact member 23 is sleeved on the rod portion 14 and slides, located on the side of the rotating member 25 closer to the rotating member 18. One end of the contact member 23 abuts against the connecting portion 17. The spacer 24 is sleeved on the rod portion 14 and located between the rotating member 25 and the contact member 23. In one embodiment, both ends of the spacer 24 are provided with contact portions 31, each contact portion 31 having a smooth boss. The smooth surface of the boss abuts against the contact member 23 and the rotating member 25, reducing friction. In another embodiment, the contact portion 31 may also be configured as a thrust bearing, which is installed between the contact member 23 and the spacer 24 and between the spacer 24 and the rotating member 25 to reduce friction.

[0038] Working process or usage method:

[0039] 1. Hook the hook-shaped part 13 onto the mounting shaft of the pedal part, and at the same time engage the bolt wrench 26 with the bolt. By rotating the rotating part 25, the contact part 23 pushes the connecting part 17, which in turn causes the rotating part 18 to move on the rod part 14, causing the bolt and the crank arm to rotate relative to each other, thereby loosening the screw until the rotating part 18 is close to the hook-shaped part 13.

[0040] 2. By adjusting the angle between the bolt and the crank arm, repeat step one until the bolt is completely removed.

[0041] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the application involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A tool for disassembling a bicycle crank, characterized in that... ,include: The force-applying component (10) is connected to the crank arm and limits the movement of the crank arm; A support assembly (11) is mounted on the force-applying component (10). A bolt wrench (26) for tightening the bolt is detachably mounted on the support assembly (11). The bolt and the crank arm rotate relative to each other through the relative movement of the support assembly (11) and the force-applying component (10). The action component (12) is set on the force-applying component (10), and the action component (12) pushes the support component (11) to move relative to the force-applying component (10).

2. The bicycle crank disassembly tool according to claim 1, characterized in that: The force-applying component (10) includes: The hook-shaped part (13) is hooked onto the crank arm, and the hook-shaped part (13) is a ring structure with a notch; The rod (14) has a hook-shaped part (13) fixedly installed at one end of the rod (14), and the support assembly (11) is installed on the rod (14). The part of the support assembly (11) on the rod (14) moves along the length of the rod (14). The lead screw section (15) is set on the rod (14).

3. A bicycle crank disassembly tool according to claim 2, characterized in that: The support component (11) includes: Mounting part (16), bolt wrench (26) is mounted on mounting part (16); The connecting part (17) is fixed to the mounting part (16); A rotating member (18) is rotatably mounted on the connecting part (17). The rod part (14) passes through the rotating member (18), so that the rotating member (18) can move along the length of the rod part (14).

4. A bicycle crank disassembly tool according to claim 3, characterized in that: The functional component (12) includes: The rotating part (25) is sleeved on the rod part (14) and located on the side of the rotating part (18) away from the hook part (13). The rotating part (25) has a threaded hole (29) that is threaded to engage with the lead screw section (15). The contact member (23) is slidably mounted on the rod (14) and located on the side of the rotating member (25) close to the rotating member (18). One end of the contact member (23) abuts against the connecting part (17). The spacer (24) is sleeved on the rod (14) and located between the rotating part (25) and the contact part (23).

5. A bicycle crank disassembly tool according to claim 4, characterized in that: The connecting part (17) is provided with a mounting hole (22) for mounting a rotating component (18). The rotating component (18) passes through the mounting hole (22). One end of the rotating component (18) is fixedly provided with a side stop (20) that abuts against the surface of the connecting part (17). The side stop (20) limits the rotating component (18). The other end of the rotating component (18) is provided with a mounting stop (21). The mounting stop (21) abuts against the surface of the connecting part (17) and limits the rotating component (18).

6. A bicycle crank disassembly tool according to claim 5, characterized in that: One end of the rotating part (18) is provided with a mounting screw hole (28), and a mounting stud (27) is fixed on the mounting flange (21). The mounting stud (27) is screwed into the mounting screw hole (28) and threadedly connected to the mounting screw hole (28).

7. A bicycle crank disassembly tool according to claim 4, characterized in that: The rotating part (25) is provided with two anti-slip protrusions (30), and the anti-slip protrusions (30) are provided with anti-slip textures.

8. A bicycle crank disassembly tool according to claim 4, characterized in that: The two end faces of the spacer (24) that contact the contact member (23) and the rotating member (25) are provided with contact portions (31).

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