Hook claw fixing structure of electric power-assisted bicycle

Abstract

A hook claw fixing structure of an electric power-assisted bicycle is characterized by comprising a hook claw and a rotation stopping piece, the hook claw is fixedly connected with a bicycle frame, and the rotation stopping piece is connected with the hook claw in a clamping mode and arranged on a motor shaft in a sleeved mode. A limiting device is arranged between the rotation stopping piece and the hook claw, the limiting device comprises a limiting protruding block and a limiting hole, the limiting protruding block and the limiting hole are arranged in a matched mode, the limiting protruding block is arranged on the surface of the hook claw, and the limiting hole is formed in the top end of the rotation stopping piece. By means of the measures of reasonably designing the connection mode of the hook claw and the rotation stopping piece, additionally arranging a limiting device and the like, the connection stability between the hook claw and the frame and the connection stability between the hook claw and the motor shaft are improved, loosening and falling are prevented, and therefore the running stability and safety of the electric power-assisted bicycle are enhanced. Meanwhile, the structure further has the advantages of being easy and convenient to install, light in weight, good in heat dissipation performance and the like, and is suitable for various types of electric power-assisted bicycles.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power-assisted bicycle parts, in particular to a hook fixing structure for an electric power-assisted bicycle. Background Art

[0002] With the improvement of environmental awareness and the advancement of science and technology, electric power-assisted bicycles are becoming more and more popular as a green travel method. The hook is the core component of the electric power-assisted bicycle frame, which is usually connected to other parts of the frame by welding. Its function is to fix the axle of the rear wheel. During the use of electric power-assisted bicycles, there are often some problems with the connection and fixing structure between the hook and the frame and motor shaft, such as unstable connection and easy loosening, which not only affects the driving stability and safety of the electric power-assisted bicycle, but also reduces the user's riding experience. Therefore, it is of great significance to improve the hook fixing structure of electric power-assisted bicycles to improve their connection stability and safety of use. Utility Model Content

[0003] In view of the problems in the related art, the utility model discloses a hook fixing structure for an electric power-assisted bicycle, which is firmly fixed and can effectively prevent the hook from falling off, thereby improving riding safety.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A hook fixing structure for an electric power-assisted bicycle comprises a hook and a rotation-stopping plate. The hook is fixedly connected to a frame, and the rotation-stopping plate is clamped with the hook and sleeved on a motor shaft.

[0006] As a further solution of the utility model: a limiting device is provided between the anti-rotation piece and the hook claw, the limiting device includes a limiting protrusion and a limiting hole, the limiting protrusion and the limiting hole are arranged in a matching manner, the limiting protrusion is arranged on the surface of the hook claw, and the limiting hole is arranged at the top of the anti-rotation piece. Through the arrangement of the limiting device, the connection between the anti-rotation piece and the hook claw is more stable and not easy to loosen.

[0007] As a further solution of the utility model: the anti-rotation plate is also provided with an anti-rotation hole, and the anti-rotation plate is sleeved on the motor shaft through the anti-rotation hole. Such a configuration enables the anti-rotation plate to be tightly sleeved on the motor shaft to prevent the movement of the hook claw.

[0008] As a further solution of the utility model: a locking groove is provided on one side of the anti-rotation plate opposite to the anti-rotation hole, and the locking groove is threadedly connected to a locking nut. By providing the locking groove and the locking nut, the anti-rotation plate can be conveniently fixed on the motor shaft, further enhancing the stability of the structure.

[0009] As a further solution of the utility model: the right side of the hook is provided with a first bayonet and a second bayonet, and the hook is connected to the frame through the first bayonet and the second bayonet. Such a design makes the connection between the hook and the frame more firm and improves the stability of the overall structure.

[0010] As a further solution of the utility model: a third bayonet is provided at the bottom of the hook, and the third bayonet clamps the motor shaft. By providing the third bayonet, the relative position between the hook and the motor shaft can be effectively fixed to prevent the hook from shifting on the motor shaft.

[0011] As a further solution of the utility model: the hook surface is provided with a plurality of hollow parts for reducing weight. By providing the hollow parts, the hook strength can be ensured while reducing its weight, which is beneficial to reducing the weight and energy consumption of the whole vehicle.

[0012] As a further solution of the utility model: the left side and the upper left side of the hook claw are respectively provided with a first boss and a second boss, and the first boss and the second boss are both provided with a disc brake hole. Such a design facilitates the installation and fixation of the disc brake and improves the stability and reliability of the brake.

[0013] By adopting the above technical solution, the connection method between the hook and the anti-rotation plate is improved, and a limit device is added, etc., the connection stability between the hook and the frame and the motor shaft is improved, and loosening and falling off are prevented, thereby enhancing the driving stability and safety of the electric power-assisted bicycle. At the same time, the structure also has the advantages of easy installation, light weight, good heat dissipation performance, etc., and is suitable for various models of electric power-assisted bicycles.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting a limit device between the anti-rotation plate and the hook claw, the relative position between the hook claw and the anti-rotation plate is ensured to be stable, the hook claw is stably fixed and conveniently installed, and the stability of the overall structure is improved.

[0016] 2. The anti-rotation plate is sleeved on the motor shaft through the anti-rotation hole, and the anti-rotation plate is fixed on the outside of the anti-rotation hole with a fastening nut, and further locked through the thread in the locking groove to achieve a stable connection between the hook, the anti-rotation plate and the motor shaft, preventing the motor shaft from falling off, and facilitating disassembly and maintenance.

[0017] 3. The hollow design on the surface of the hook and the setting of the disc brake hole not only reduce the weight but also facilitate the installation of the disc brake, improving the performance of the whole vehicle and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached picture:

[0020] Figure 1 It is a schematic diagram of the rear view structure of the hook fixing structure.

[0021] Figure 2 It is a schematic diagram of the structure of the hook.

[0022] Figure 3 It is a schematic diagram of the front view structure of the anti-rotation piece.

[0023] Figure 4 A schematic diagram of the side structure of the anti-rotation plate.

[0024] Notes on the accompanying drawings: 1. hook; 2. anti-rotation plate; 4. limiting protrusion; 5. limiting hole; 6. anti-rotation hole; 7. locking groove; 8. locking nut; 9. first bayonet; 10. second bayonet; 11. third bayonet; 12. hollow portion; 13. first boss; 14. second boss; 15. disc brake hole. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present embodiment disclosure as detailed in the appended claims.

[0026] It should be noted that all directional indications in the embodiments (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in the embodiments are only for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings: Figures 1 to 4 As shown, a hook fixing structure of an electric power-assisted bicycle comprises a hook 1 and a stop plate 2, wherein the hook 1 is fixedly connected to a frame, and the stop plate 2 is clamped with the hook 1 and sleeved on a motor shaft.

[0029] Preferably, a limiting device is provided between the anti-rotation piece 2 and the hook claw 1, including a limiting protrusion 4 and a limiting hole 5. The limiting protrusion 4 is provided on the surface of the hook claw 1, and the limiting hole 5 is provided at the top of the front face of the anti-rotation piece 2, so as to ensure that the relative position of the hook claw 1 and the anti-rotation piece 2 is stable, and prevent the anti-rotation piece 2 and the hook claw 1 from relative displacement.

[0030] In other optional embodiments, a through hole may be provided on the hook 1, a thread may be provided in the through hole, and a corresponding fastener may be provided on the anti-rotation plate. The fastener may be a screw that is screwed into the through hole on the hook 1 to ensure that the relative position of the hook 1 and the anti-rotation plate 2 is stable, thereby preventing relative displacement between the anti-rotation plate 2 and the hook 1.

[0031] Preferably, a stop hole 6 is provided on the stop plate 2, and the stop plate 2 is sleeved on the motor shaft through the stop hole 6 to prevent the motor shaft from sliding during operation.

[0032] Preferably, a locking groove 7 is provided on one side of the anti-rotation plate 2, facing the anti-rotation hole 6, and a thread is provided in the locking groove for tightening a locking nut 8 to improve the connection stability between the anti-rotation plate 2 and the hook 1. The locking nut 8 is mostly a regular hexagon or a regular octagon, which makes it easy for the locking tool to apply torque to the locking nut to lock the locking nut. By rotating the locking nut 8, the anti-rotation plate 2 can be locked or loosened, which is convenient for installation and disassembly.

[0033] In addition, a first bayonet 9 and a second bayonet 10 are provided on the right side of the hook 1, and the hook is connected to the frame via the first bayonet 9 and the second bayonet 10 to enhance the connection stability.

[0034] Preferably, a third bayonet 11 is provided at the bottom of the hook 1, and the third bayonet 11 clamps the motor shaft to ensure a stable connection between the hook 1 and the motor shaft, thereby further ensuring the stability of the motor.

[0035] Preferably, in order to reduce the weight of the entire structure and lower the material cost, a plurality of hollow portions 12 are provided on the surface of the hook 1. These hollow portions 12 can not only reduce the weight but also maintain the strength of the structure and increase the service life.

[0036] Preferably, in order to facilitate the installation of the disc brake and improve the braking performance, the left side and the upper left side of the hook 1 are respectively provided with a first boss 13 and a second boss 14, and the first boss 13 and the second boss 14 are both provided with a disc brake hole 15. The disc brake can be conveniently installed in the disc brake hole to adapt to different types of disc brake systems.

[0037] In practical application: During installation, first connect the hook 1 firmly to the frame through the first bayonet 9 and the second bayonet 10 to ensure that the connection between the hook and the frame is tight and stable. Next, align the anti-rotation plate 2 with the motor shaft and put it on, ensuring that the anti-rotation plate and the motor shaft fit tightly, and naturally embed the limiting protrusion 4 on the hook 1 into the limiting hole 5 of the anti-rotation plate 2 to form a preliminary limiting effect, ensuring that the relative position between the two is fixed, and put the anti-rotation hole 6 on the motor shaft to ensure that the relative position between the anti-rotation plate and the motor shaft will not move. Use a fastening nut to tighten the outer side of the anti-rotation plate 2 to ensure that the connection between the anti-rotation plate and the motor shaft is firm, tighten the locking nut 8 in the locking groove 7 on the side of the anti-rotation plate 2, and further improve the connection stability between the anti-rotation plate 2 and the hook 1 through the locking force of the locking nut 8. In addition, the third bayonet 11 at the bottom of the hook 1 will only clamp the motor shaft, providing additional stability for the entire structure. Finally, find the first boss 13 and the second boss 14 on the frame, determine the position of the disc brake hole 15, install the disc brake into the disc brake hole 15 on the first boss 13 and the second boss 14, and complete the installation of the entire fixed structure. In this way, the disc brake can be easily installed on the hook to improve the braking performance and ensure riding safety.

[0038] Finally, it should be noted that the above disclosure is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. The scope of this application is limited only by the attached claims.

Claims

1. A hook fixing structure for an electric power-assisted bicycle, characterized in that: It comprises a hook claw (1) and a rotation-stopping plate (2), wherein the hook claw (1) is fixedly connected to the vehicle frame, and the rotation-stopping plate (2) is clamped to the hook claw (1) and sleeved on the motor shaft; A limiting device is provided between the anti-rotation plate (2) and the hook claw (1), the limiting device comprising a limiting protrusion (4) and a limiting hole (5), the limiting protrusion (4) and the limiting hole (5) are matched with each other, the limiting protrusion (4) is provided on the surface of the hook claw (1), and the limiting hole (5) is opened on the surface of the anti-rotation plate (2) and close to the top end; The anti-rotation plate (2) is further provided with an anti-rotation hole (6), and the anti-rotation plate (2) is sleeved on the motor shaft through the anti-rotation hole (6); A locking groove (7) is provided on one side of the anti-rotation plate (2) at a position directly opposite to the anti-rotation hole (6), and the locking groove (7) is threadedly connected to a locking nut (8).

2. The hook fixing structure of an electric power-assisted bicycle according to claim 1, characterized in that: A first bayonet (9) and a second bayonet (10) are provided on the right side of the hook (1), and the hook is connected to the frame via the first bayonet (9) and the second bayonet (10).

3. The hook fixing structure of an electric power-assisted bicycle according to claim 1, characterized in that: A third clamping opening (11) is provided at the bottom of the hook (1), and the third clamping opening (11) clamps the motor shaft.

4. The hook fixing structure of an electric power-assisted bicycle according to claim 1, characterized in that: The hook (1) has a surface provided with a plurality of hollow portions (12) for reducing weight.

5. The hook fixing structure of an electric power-assisted bicycle according to claim 1, characterized in that: A first boss (13) and a second boss (14) are respectively provided on the left side and the upper left side of the hook claw (1), and a disc brake hole (15) is provided on both the first boss (13) and the second boss (14).

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