A front fork hook for front motors

Abstract

This utility model relates to the field of electric-assisted bicycle technology, and more particularly to a front fork hook for a front motor, comprising: a hook body, including a connector for mounting components and a hook disposed on the side wall of the connector, the hook having an open axle clamping area; an anti-detachment structure, detachably disposed at the open end of the axle clamping area, so that the axle clamping area forms a closed slot; and an anti-torsion structure disposed on the side of the hook away from the tire. The front fork hook of this utility model has an anti-detachment structure in the axle clamping area, which allows the hook with the anti-detachment structure to completely enclose and clamp the axle, preventing it from falling off. Furthermore, the outer side of the hook also has an anti-torsion structure, ensuring that the motor does not exert all its force on the aluminum hook during operation, thus improving riding stability and the firmness of the hook connection.

Description

Technical Field

[0001] This utility model relates to the field of electric-assisted bicycle technology, and in particular to a front fork hook for a front motor. Background Technology

[0002] The bicycle dropout is a key load-bearing structure at the end of the front fork and rear triangle of the bicycle frame, used to secure the wheelset axle. Its traditional design primarily meets the load requirements under human riding conditions.

[0003] Traditional fork hooks are only suitable for low-power front motors (500W). They have low overall strength and only one opening at the bottom without other structural protection, making them prone to detachment. Furthermore, electric bicycles (especially front-wheel drive models) generate instantaneous high torque on the motor shaft during start-up, acceleration, or sudden braking. For example, in hub motors directly mounted on the wheel, the torque is transmitted to the fork hook through the shaft. Without effective support, this torque can lead to: hook fatigue (aluminum alloy hooks subjected to prolonged torque undergo changes in their crystal structure, eventually resulting in cracks or breakage); and motor detachment risk (deformation of the hook can cause wheel axle fixation failure, leading to motor detachment). Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a front fork hook pawl specifically for front motors, comprising:

[0005] The hook body includes a connector for mounting components and a hook disposed on the side wall of the connector, wherein the hook has an open axle clamping area;

[0006] An anti-detachment structure is detachably configured at the open end of the wheel axle clamping area to form a closed slot in the wheel axle clamping area;

[0007] An anti-torsion structure is configured on the side of the hook away from the tire.

[0008] Furthermore, the outer claw teeth of the hook are provided with a through hole, and the inner sidewall of the inner claw teeth of the hook is provided with a first groove at a position corresponding to the first through hole.

[0009] Furthermore, the anti-detachment structure is a quadrilateral frustum, the side wall of the anti-detachment structure located in the wheel axle clamping area is an arc-shaped surface, and the outer side of the anti-detachment structure opposite to the arc-shaped surface is flush with the claw tip of the hook.

[0010] Furthermore, the anti-detachment structure is provided with a second through hole at a position corresponding to the first through hole. The anti-detachment structure is fixedly connected to the hook claw after passing through the first through hole, the second through hole and the first slot with bolts.

[0011] Furthermore, the anti-torsion structure is an anti-torsion metal washer, the outer edge of the anti-torsion metal washer is provided with an ear structure, the anti-torsion metal washer is provided with a third through hole at a position corresponding to the wheel axle, and the anti-torsion metal washer is fixed to the hook claw through the hole groove on the ear structure and the bolt.

[0012] Furthermore, the hook body is made of aluminum alloy.

[0013] Furthermore, the anti-torsion structure is made of hardened steel or a special hard alloy that is harder than the hook body.

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

[0015] 1. The front fork hook of this utility model has an anti-detachment structure in the wheel axle clamping area. The hook with the anti-detachment structure installed can completely wrap and clamp the wheel axle to prevent it from falling off. In addition, the outside of the hook is also provided with an anti-torsion structure, so that the motor will not put all the force on the aluminum hook when it is working, thereby improving the stability of riding and the firmness of the hook connection. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the left and right hooks of a front fork hook for a front motor according to the present invention, which are equipped with anti-torsion structures.

[0018] Figure 2 This is a schematic diagram of the anti-detachment structure of a front fork hook claw for a front motor according to this utility model;

[0019] Figure 3 This is a schematic diagram of a front fork hook pawl for a front motor according to the present invention;

[0020] Figure 4 This is a schematic diagram of the anti-detachment structure of a front fork hook pawl for a front motor according to this utility model;

[0021] Figure 5 This is a schematic diagram of a hook in the prior art.

[0022] Figure Labels

[0023] 1: Hook body;

[0024] 11: Connector; 12: Hook;

[0025] 121: Wheel and axle clamping area; 122: First through hole; 123: First slot;

[0026] 2: Anti-detachment structure;

[0027] 21: Second through hole;

[0028] 3: Torsional structure. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0030] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0031] First Embodiment

[0032] Please see Figure 1-5 The technical solution for a front fork hook pawl specifically for front motors provided in this embodiment includes the following:

[0033] The hook body 1 includes a connector 11 for mounting components and a hook 12 disposed on the side wall of the connector 11. The hook 12 has an open wheel and axle clamping area 121.

[0034] The anti-detachment structure 2 is detachably configured at the open end of the wheel axle clamping area 121 so that the wheel axle clamping area 121 forms a closed slot;

[0035] The anti-torsion structure 3 is disposed on the side of the hook 12 away from the tire.

[0036] In specific implementation, as shown in the appendix Figure 1 As shown, attached Figure 1 It includes a left hook and a right hook, respectively located on both sides of the tire, for attaching Figure 1 Taking the left hook as an example, the hook body 1 includes a cylindrical structure (connector 11) with a hollow cavity and a hook 12 located outside the cylindrical structure. The hollow area in the hook 12 is the wheel axle clamping area 121. The component at the bottom of the wheel axle clamping area 121 is the anti-detachment structure 2. The sheet-like structure on the left side of the hook 12 is the anti-rotation structure.

[0037] Specifically, the connection between the hook 12 and the anti-detachment structure 2 is as follows: a first through hole 122 is provided on the outer claw teeth of the hook 12, and a first groove 123 is provided on the inner sidewall of the inner claw teeth of the hook 12 at a position corresponding to the first through hole 122. A second through hole 21 is provided on the anti-detachment structure 2, which is in the shape of a quadrilateral truncated pyramid, at a position corresponding to the first through hole 122. The anti-detachment structure 2 is fixedly connected to the hook 12 by bolts passing through the first through hole 122, the second through hole 21, and the first groove 123.

[0038] In practical implementation, in order to better wrap and clamp the axle with the hook 12, the uppermost part of the axle clamping area 121 is a downward-facing arc-shaped surface, and the anti-detachment structure 2 is located on the side wall of the axle clamping area 121, which is an arc-shaped surface (and attached). Figure 4 The upper end face of the structure is set as an arc surface. The outer side of the anti-detachment structure 2 opposite to the arc surface is flush with the claw end of the hook 12.

[0039] Specifically, the anti-torsion structure 3 is an anti-torsion metal washer, the outer edge of the anti-torsion metal washer is provided with an ear structure, the anti-torsion metal washer is provided with a third through hole at a position corresponding to the wheel axle, and the anti-torsion metal washer is fixed to the hook 12 by bolts through the holes and grooves on the ear structure.

[0040] Specifically, the hook body 1 is made of aluminum alloy.

[0041] Specifically, this utility model is additionally provided with an anti-torsion metal washer, which is usually made of a material harder than the aluminum alloy frame hook, such as hardened steel or special hard alloy. When the motor is working, it will not put all the force on the aluminum hook 12. The anti-torsion metal washer, hook 12 and shaft core form a multi-contact surface cooperative force-bearing structure.

[0042] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A front fork hook pawl specifically for front motors, characterized in that, include: The hook body includes a connector for mounting components and a hook disposed on the side wall of the connector, wherein the hook has an open axle clamping area; An anti-detachment structure is detachably configured at the open end of the wheel axle clamping area to form a closed slot in the wheel axle clamping area; An anti-torsion structure is configured on the side of the hook away from the tire.

2. The front fork hook pawl for front motors according to claim 1, characterized in that: The outer claw teeth of the hook are provided with a through hole, and the inner sidewall of the inner claw teeth of the hook is provided with a first groove at a position corresponding to the first through hole.

3. The front fork hook pawl for front motors according to claim 1, characterized in that: The anti-detachment structure is a quadrilateral frustum, and the side wall of the anti-detachment structure located in the wheel axle clamping area is an arc-shaped surface. The outer side of the anti-detachment structure opposite to the arc-shaped surface is flush with the claw tip of the hook.

4. The front fork hook pawl for front motors according to claim 2, characterized in that: The anti-detachment structure has a second through hole at a position corresponding to the first through hole. The anti-detachment structure is fixedly connected to the hook claw after passing through the first through hole, the second through hole and the first slot with bolts.

5. The front fork hook pawl for front motors according to claim 1, characterized in that: The anti-torsion structure is an anti-torsion metal washer. The outer edge of the anti-torsion metal washer is provided with an ear structure. The anti-torsion metal washer is provided with a third through hole at a position corresponding to the wheel axle. The anti-torsion metal washer is fixed to the hook claw through the hole groove on the ear structure and the bolt.

6. The front fork hook pawl for front motors according to claim 1, characterized in that: The hook body is made of aluminum alloy.

7. The front fork hook pawl for front motors according to claim 1, characterized in that: The anti-torsion structure is made of hardened steel or cemented carbide, which is harder than the hook body.

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