Rear fork hook claw for electric bicycle

Abstract

The utility model relates to a rear fork hook claw for an electric bicycle, which comprises a first hook claw body and a second hook claw body, one side surface of the first hook claw body and one side surface of the second hook claw body are respectively provided with a first groove, the first grooves are counter bores, and each first groove is internally provided with a first groove in a penetrating manner; according to the utility model, the first groove and the first groove are firstly provided with the bearing, one end face of the bearing is firmly attached to the inner surface of the first groove, the other side of the bearing passes through the first groove and extends outwards, and the motor rotating shaft is clamped in the bearing. And an external bolt penetrates through the first fixing through hole and is connected to the interior of the second fixing through hole, so that the bearing matched with the motor rotating shaft is firmly clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycles, and particularly relates to a rear fork hook claw for an electric bicycle. Background Art

[0002] ‌The main function of the rear hook claw of an electric bicycle is to connect the frame and the wheel hub, while providing necessary strength and stability to ensure the safety and performance of the bicycle during riding. Among them, ‌connecting the frame and the wheel hub‌: The rear hook claw provides stable support for the wheel hub through a fixed connection with the frame, ensuring that the wheel hub does not shift or loosen during riding. ‌Adapting to different shifting requirements‌: Some designs allow the rear hook claw to cooperate with a derailleur or a hanger to meet the different requirements of single-speed or multi-speed bicycles.

[0003] The authorized announcement number is CN201737092U, which discloses a bicycle transmission protection frame. Combining its specification and drawings, the solution connects the transmission protection frame to the upper fork and the lower fork through fixing bolts, and at the same time sets the transmission on the hook claw, and the hook claw is connected to the upper fork and the lower fork, so that the entire hook claw is fixed together with the transmission protection frame. However, during the movement of the motor, when the torque of the rotating shaft at the end of the motor is too large, it may cause the loosening of the end of the hook claw. Summary of the Invention

[0004] The utility model mainly aims at the problems existing in the use of the rear hook claw, and invents a rear fork hook claw for an electric bicycle. First, bearings are installed on the first groove and the first recess, and one end face of the bearing is firmly attached to the inner surface of the first recess, and the other side extends outward through the first groove. The motor shaft is stuck inside this bearing, and an external bolt passes through the first fixing through hole and is connected to the inside of the second fixing through hole, so that the bearing adapted to the motor shaft is firmly locked; most of the nut area of the bolt after installation is sunk inside the first recess.

[0005] The invention purpose of the utility model is realized through the following technical scheme: A rear fork hook claw for an electric bicycle, including a first hook claw body and a second hook claw body, wherein one side surface of each of the first hook claw body and the second hook claw body is provided with a first recess, the first recess is a counterbore, and a first groove is further penetrated through the inside of each first recess.

[0006] Preferably, several first fixing through holes are provided on one side of the first hook claw body and the second hook claw body close to the first groove, the first fixing through holes are also counterbores, several second fixing through holes adapted thereto are provided on the other side of the first hook claw body and the second hook claw body close to the first groove, and an external bolt passes through the first fixing through hole and is connected to the inside of the second fixing through hole.

[0007] Preferably, a second groove is provided on the other side surface of the first hook body, and a supporting claw is provided inside the second groove, and this arrangement is for realizing the subsequent connection of the supporting claw to the multi-chain device.

[0008] Preferably, a third fixing through hole is provided inside the second groove, a plurality of matching fourth fixing through holes are provided at one end of the support claw, and the other end of the support claw is connected to the multi-chain device on the bicycle. This arrangement is to achieve a detachable connection between the support claw and the second groove.

[0009] Preferably, one end of each of the first hook body and the second hook body is provided with an annular boss, and a lower fork movable joint is rotatably connected to the surface of each of the annular bosses.

[0010] Preferably, the first hook body and the second hook body are connected to one end of the frame of the electric bicycle by welding, and this arrangement can ensure the connection strength between the first hook body and the second hook body and the frame.

[0011] Preferably, the first hook body, the second hook body, the lower fork movable joint and the supporting claw are all made of metal. This arrangement can provide the necessary strength to ensure that they will not break easily when subjected to external force, thereby protecting the safety of the frame and the rider.

[0012] Compared with the prior art, the utility model has the following beneficial effects: 1. A bearing is first installed on the first groove and the first recess, and one end face of the bearing is firmly fitted to the surface inside the first recess, and the other side extends outward through the first groove. The motor shaft is stuck inside the bearing, and the external bolt passes through the first fixed through hole and is connected to the inside of the second fixed through hole, so that the bearing matched with the motor shaft is firmly stuck. Even when the torque output by the motor reaches its peak, this installation structure can withstand this area without large shaking; 2. After installation, most of the nut area of the bolt is sunken inside the first recess, so the bolt can also prevent it from falling off during daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 It is an exploded view of the utility model;

[0015] Figure 3 It is a three-dimensional diagram of the utility model.

[0016] Markings in the figure: 1. First claw body; 11. Second groove; 12. Supporting claw; 111. Third fixing through-hole; 121. Fourth fixing through-hole; 2. Second claw body; 3. First groove; 4. First groove; 5. First fixing through-hole; 6. Second fixing through-hole; 7. Ring-shaped boss; 8. Lower fork movable joint. Detailed implementation mode

[0017] The following further describes the present utility model in conjunction with the embodiments shown in the drawings:

[0018] As Figures 1 to 3 shown, a rear fork claw for an electric bicycle includes a first claw body 1 and a second claw body 2. The first claw body 1 and the second claw body 2 are connected to one end of the frame of the electric bicycle by welding. A first groove 3 is provided on one side surface of each of the first claw body 1 and the second claw body 2. The first groove 3 is a counterbore. A first groove 4 is further provided through the inside of each first groove 3. The first groove 4 penetrates the surfaces of the first claw body 1 and the second claw body 2, so that its end has a certain deformation ability. A number of first fixing through-holes 5 are provided on one side of the first claw body 1 and the second claw body 2 close to the first groove 4. The first fixing through-holes 5 are also counterbores. The number of first fixing through-holes 5 on the first claw body 1 is one, while the number of first fixing through-holes 5 on the second claw body 2 is two. A number of second fixing through-holes 6 are provided on the other side of the first claw body 1 and the second claw body 2 close to the first groove 4. After such a setting, bearings are first installed on the first groove 4 and the first groove 3. One end face of the bearing firmly adheres to the inner surface of the first groove 3, and the other side extends outward through the first groove 4. For the end shaft of the motor on the rear drive wheel of the electric bicycle, the shaft is stuck inside this bearing. Then, an external bolt passes through the first fixing through-hole 5 and is connected to the inside of the second fixing through-hole 6, so that the bearing adapted to the motor shaft is firmly locked. Even when the torque output by the motor reaches the peak, this installation structure can withstand this area without significant shaking. Moreover, since most of the nut area of the bolt is sunk inside the first groove 3 after installation, the bolt can also prevent falling off during daily use.

[0019] In this embodiment, a second groove 11 is provided on the other surface of the first claw body 1. A support claw 12 is provided inside the second groove 11. A third fixing through hole 111 is provided inside the second groove 11. One end of the support claw 12 is provided with a number of matching fourth fixing through holes 121. The other end of the support claw 12 is connected to a multi-chain device on the bicycle. Through the multi-chain device, the rider can easily switch between different gears, so as to select a larger gear ratio when climbing a slope to provide more power, and select a smaller gear ratio when on flat roads or going downhill to increase speed. The support claw 12 is always fixed relative to the first claw body 1 or the second claw body 2. Ring-shaped bosses 7 are provided at one ends of the first claw body 1 and the second claw body 2. A lower fork movable joint 8 is rotatably connected to the surface of each ring-shaped boss 7. During the movement of the electric bicycle, the lower fork movable joint 8 can play a certain shock-absorbing role for the first claw body 1 or the second claw body 2. The materials of the first claw body 1, the second claw body 2, the lower fork movable joint 8 and the support claw 12 are all aluminum alloy materials, which can provide the necessary strength to ensure that it will not break easily when subjected to external forces, thereby protecting the safety of the frame and the rider.

[0020] Working principle and usage method of the present utility model:

[0021] First, the first claw body 1 and the second claw body 2 are connected to one end of the frame of the electric bicycle by welding. Bearings are first installed on the first groove 4 and the first groove 3. One end face of the bearing is firmly attached to the inner surface of the first groove 3, and the other side extends out through the first groove 4. For the end shaft of the motor on the rear wheel of the electric bicycle, the shaft is stuck inside this bearing. Then an external bolt passes through the first fixing through hole 5 and is connected to the inside of the second fixing through hole 6, so that the bearing adapted to the motor shaft is firmly locked. The other end of the support claw 12 is connected to a multi-chain device on the bicycle. Through the multi-chain device, the rider can easily switch between different gears, so as to select a larger gear ratio when climbing a slope to provide more power. During the riding process, the lower fork movable joint 8 can play a certain shock-absorbing role for the first claw body 1 or the second claw body 2.

[0022] The specific embodiments described in the text are only examples to illustrate the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A rear fork hook claw for an electric bicycle, comprising a first hook claw body (1) and a second hook claw body (2), characterized in that, On one side surface of the first claw body (1) and the second claw body (2), a first groove (3) is provided. The first groove (3) is a counterbore, and a first groove (4) penetrates through the inside of each first groove (3).

2. The rear fork hook claw for an electric bicycle according to claim 1, characterized in that, On one side of the first claw body (1) and the second claw body (2) close to the first groove (4), a number of first fixing through holes (5) are provided. The first fixing through holes (5) are also counterbores. On the other side of the first claw body (1) and the second claw body (2) close to the first groove (4), a number of second fixing through holes (6) that are adapted to each other are provided. An external bolt passes through the first fixing through hole (5) and is connected to the inside of the second fixing through hole (6).

3. The rear fork hook claw for an electric bicycle according to claim 2, characterized in that On the other side surface of the first claw body (1), a second groove (11) is provided. A support claw (12) is provided inside the second groove (11).

4. The rear fork hook claw for an electric bicycle according to claim 3, characterized in that, A third fixing through hole (111) is provided inside the second groove (11). A number of fourth fixing through holes (121) that are adapted to each other are provided at one end of the support claw (12). The other end of the support claw (12) is connected to a multi-chain device on a bicycle.

5. The rear fork hook claw for an electric bicycle according to claim 4, wherein, At one end of the first claw body (1) and the second claw body (2), a ring-shaped boss (7) is provided. A lower fork movable joint (8) is rotatably connected to the surface of each ring-shaped boss (7).

6. The rear fork hook claw for an electric bicycle according to claim 5, characterized in that, The first claw body (1) and the second claw body (2) are connected to one end of the frame of an electric bicycle by welding.

7. The rear fork hook claw for an electric bicycle according to claim 6, characterized in that, The materials of the first claw body (1), the second claw body (2), the lower fork movable joint (8), and the support claw (12) are all metal materials.

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