Fool-proof and rotation-proof structure of electric bicycle

Abstract

The invention provides a fool-proof and anti-rotation structure of an electric bicycle. The fool-proof and anti-rotation structure comprises a hub motor, an anti-rotation assembly and a rear fork assembly. The anti-rotation assembly comprises a first adapter and a second adapter, the first adapter is provided with a first base, a first ring part and a first shaft hole, a first inclined surface is formed at one end of the first ring part, the second adapter is provided with a second base, a second ring part and a second shaft hole, and a second inclined surface is formed at one end of the second ring part; a second inclined plane and a stop flange surrounding the second inclined plane are formed on the second base, the first inclined plane abuts against the second inclined plane, and the outer periphery of the first ring part abuts against the inner periphery of the stop flange of the second base; therefore, through the matching of the first inclined surface and the second inclined surface, the installation convenience is improved, and the hub motor can be prevented from driving the rear fork assembly to rotate.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a fool-proof anti-rotation structure, in particular to a fool-proof anti-rotation structure of an electric bicycle, which is provided with an anti-rotation assembly between the rear fork of the bicycle frame and the hub motor. Through the design of the inclined surface, a specific assembly direction is provided, and the components can be clamped to each other to achieve the functions of fool-proof and anti-rotation. BACKGROUND

[0002] The mounting mechanism between the frame and the wheel of the bicycle can be divided into quick release type and through shaft type. The quick release type is that two hook claw parts of the front / rear fork are clamped at both ends of the wheel shaft, and then a quick release rod is used for locking to complete the installation. The through shaft type is that a through shaft is arranged through both ends of the wheel shaft and two hook claw parts of the front / rear fork. A hole is designed in one of the hook claw parts to allow the through shaft to pass through, and the other hook claw part is designed as a threaded hole, so that the external thread of one end of the through shaft can be locked in the threaded hole of the hook claw part. Compared with the quick release type, the through shaft type is less likely to be loosened due to vibration during riding.

[0003] Chinese Patent No. CN221162022U discloses a through shaft for a bicycle. In order to be able to be assembled on various specifications of frames, the through shaft is of a single specification, and different specifications of washers are assembled at one end of the through shaft to be applied to the hook claw parts of various specifications of frames. However, current electric bicycles lack anti-rotation mechanisms, so the through shaft is easily driven by the hub motor, which causes the problem of invalid output power of the hub motor.

[0004] Patent No. TWM621342U provides a motor anti-rotation structure. Anti-rotation planes are arranged on two shafts of the hub motor, and two anti-rotation fittings are combined. The anti-rotation planes of the shafts abut against the anti-rotation planes of the anti-rotation fittings, so that the hub motor does not affect the rear fork or the through shaft during operation. Through this anti-rotation structure, the through shaft can indeed be prevented from being driven by the hub motor, but the shafts at both ends of the hub motor need to be designed with anti-rotation planes, and two anti-rotation fittings are correspondingly arranged, which is relatively complex in structure design. Therefore, how to provide a structure that can prevent the hub motor from affecting the through shaft when it is actuated is a technical problem to be solved at present. SUMMARY

[0005] In view of the above-mentioned problems of the existing hub motor of the electric bicycle in actual implementation and use, the inventor has improved it through rich professional knowledge and many years of practical experience, and provided a fool-proof anti-rotation structure of an electric bicycle.

[0006] The present disclosure provides a fool-proof anti-rotation structure of an electric bicycle, which is capable of achieving the fool-proof mechanism by the slope features of the anti-rotation assembly when installing the hub motor with the rear fork of the frame, and the components in the anti-rotation assembly can be clamped with each other through the slopes to fix the hub motor with the rear fork of the frame, thereby achieving the anti-rotation function.

[0007] To achieve the above-mentioned implementation purposes, the present disclosure provides a fool-proof anti-rotation structure of an electric bicycle, which comprises a hub motor having a through hole and a side cover plate; an anti-rotation assembly comprising a first adapter fixed to the side cover plate of the hub motor and a second adapter, the first adapter having a first base, a first ring portion protruding from the first base, and a first shaft hole passing through the first base and the first ring portion, a first slope being formed at one end of the first ring portion, the second adapter having a second base, a second ring portion protruding from the second base, and a second shaft hole passing through the second base and the second ring portion, a second slope and a stop flange surrounding the second slope being formed on the second base, wherein the first slope abuts against the second slope, and the outer periphery of the first ring portion abuts against the inner periphery of the stop flange of the second base; a rear fork assembly having two mounting portions and a through shaft, the through shaft being arranged to pass through the through hole of the hub motor, the first shaft hole of the first adapter of the anti-rotation assembly, and the second shaft hole of the second adapter of the anti-rotation assembly, one of the mounting portions being connected to one end of the through shaft, and the other mounting portion being connected to the second ring portion of the second adapter of the anti-rotation assembly.

[0008] According to an embodiment of the present disclosure, the first base of the first adapter of the anti-rotation assembly further protrudes to form a plurality of first lugs, and a first locking hole is arranged on each of the first lugs to be locked to the side cover plate of the hub motor.

[0009] According to an embodiment of the present disclosure, the second base of the second adapter of the anti-rotation assembly further protrudes to form a plurality of second lugs, and a second locking hole is arranged on each of the second lugs to be locked to the rear fork assembly.

[0010] According to an embodiment of the present disclosure, the stop flange of the second adapter of the anti-rotation assembly further has an opening, and the outer periphery of the first ring portion of the first adapter partially abuts against the inner periphery of the stop flange of the second base.

[0011] According to an embodiment of the present disclosure, the rear fork assembly further has a first accessory group and a second accessory group, the first accessory group being accommodated in the first shaft hole of the first adapter, a first communication hole of the first accessory group being communicated with the first shaft hole, and the second accessory group being accommodated in the second shaft hole of the second adapter, a second communication hole of the second accessory group being communicated with the second shaft hole.

[0012] According to embodiments of the present disclosure, the through shaft passes through the through hole of the hub motor, the first shaft hole of the first adapter of the anti-rotation assembly, the first communication hole of the first accessory group of the rear fork assembly, and the second communication hole of the second accessory group of the rear fork assembly.

[0013] According to embodiments of the present disclosure, the first accessory group has a plurality of insertion slots, and the inner periphery of the first ring portion of the first adapter is provided with an inner edge seat and a plurality of insertion hole seats arranged on the inner edge seat, corresponding to the plurality of insertion slots of the first accessory group. By passing a plurality of insertion members through the plurality of insertion slots and the plurality of insertion hole seats, the first accessory group is arranged in the first shaft hole of the first adapter.

[0014] According to embodiments of the present disclosure, the second accessory group has a plurality of fixing slots, and the second ring portion of the second adapter is provided with a plurality of fixing holes, corresponding to the plurality of fixing slots of the second accessory group. By fixing a plurality of fixing members in the plurality of fixing slots and the plurality of fixing holes, the second accessory group is arranged in the second shaft hole of the second adapter. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a whole appearance view of an embodiment of the present application;

[0016] Fig. 2 is an exploded view (1) of an embodiment of the present application;

[0017] Fig. 3 is an exploded view (2) of an embodiment of the present application;

[0018] Fig. 4 is a combined view of an anti-rotation assembly of an embodiment of the present application;

[0019] Fig. 5 is an exploded view (1) of an anti-rotation assembly of an embodiment of the present application; and

[0020] Fig. 6 is an exploded view (2) of an anti-rotation assembly of an embodiment of the present application.

[0021] REFERENCE NUMERALS

[0022] 1, hub motor;

[0023] 11, through hole;

[0024] 12, side cover plate;

[0025] 2, anti-rotation assembly;

[0026] 21, first adapter;

[0027] 211, first base;

[0028] 212, first ring portion;

[0029] 213、first shaft hole;

[0030] 214、first bevel;

[0031] 215、first lug;

[0032] 216、first lock hole;

[0033] 217、inner edge piece seat;

[0034] 218、latch hole;

[0035] 22、second adapter;

[0036] 221、second base;

[0037] 222、second ring part;

[0038] 223、second shaft hole;

[0039] 224、second bevel;

[0040] 225、stop flange;

[0041] 226、opening;

[0042] 227、second lug;

[0043] 228、second lock hole;

[0044] 229、fixing hole;

[0045] 3、rear fork assembly;

[0046] 31、mounting part;

[0047] 32、through shaft;

[0048] 33、left rear fork;

[0049] 34、right rear fork;

[0050] 35、first accessory group;

[0051] 36、second accessory group;

[0052] 361、fixing groove;

[0053] 4、screw;

[0054] 5、nut;

[0055] 6、quick release screw;

[0056] 7、latch piece;

[0057] 8、fixing piece. DETAILED DESCRIPTION

[0058] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It is to be understood, however, that the description is merely exemplary and is intended to provide a thorough understanding of the present disclosure. In the following detailed description of embodiments of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present disclosure. However, it would be apparent to those skilled in the art that embodiments of the present disclosure can be practiced without these specific details. In other instances, well-known structures and

[0059] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the term "includes" and tautological expressions thereof, such as "including," means the inclusion of the stated features, steps, operations, and / or elements but not to the exclusion of one or more other features, steps, operations, and / or elements.

[0060] All terms used herein including technical and scientific terms have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification, and should not be interpreted in an idealized or overly formal way.

[0061] In the case where expressions similar to "at least one of A, B, and C, and the like" are used, it is generally to be interpreted that the meaning of the expression is the same as that of "at least one of A, B, and C, etc.," unless otherwise defined in the context of the specification (for example, "a system having at least one of A, B, and C" should include but not be limited to a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and / or a system having A, B, and C, etc.).

[0062] Referring to Figs. 1-3 The anti-stupidity and anti-rotation structure of the electric bicycle of the present application mainly comprises a hub motor 1, an anti-rotation assembly 2, and a rear fork assembly 3. The anti-rotation assembly 2 is assembled on one side of the rear fork assembly 3 and one side of the hub motor 1, respectively, and the anti-rotation assembly 2 connects the rear fork assembly 3 and the hub motor 1 to each other to achieve the mechanism of anti-stupidity and anti-rotation.

[0063] The hub motor 1 has a through hole 11 and a side cover plate 12. It should be noted that the hub motor 1 of the present application mainly provides a hole slot (such as the through hole 11) for the through shaft 32 of the rear fork assembly 3 and provides a position (such as the side cover plate 12) for fixing the anti-rotation assembly 2. The internal structure of the hub motor 1 is not the focus of the present application, and therefore the structural features of the hub motor 1 are not limited.

[0064] Referring to Figs. 4-6The anti-rotation assembly 2 comprises a first adapter 21 and a second adapter 22. The first adapter 21 has a first base 211, a first ring 212, and a first shaft hole 213. The first shaft hole 213 penetrates the first base 211 and the first ring 212. The first ring 212 protrudes perpendicularly from the first base 211. One end of the first ring 212 has a first inclined surface 214. A plurality of first lugs 215 protrude from the periphery of the first base 211. First locking holes 216 are provided on the first lugs 215. The second adapter 22 has a second base 221, a second ring 222, and a second shaft hole 223. The second shaft hole 223 penetrates the second base 221 and the second ring 222. The second ring 222 protrudes perpendicularly from the second base 221. The second base 221 has a second inclined surface 224 and a stop flange 225 surrounding the second inclined surface 224. The stop flange 225 has an opening 226. A plurality of second lugs 227 protrude from the periphery of the second base 221. Second locking holes 228 are provided on the second lugs 227.

[0065] The fork assembly 3 has two mounting portions 31 and a through shaft 32.

[0066] During installation, the screws 4 are inserted through the first locking holes 216 of the first lugs 215 to lock the first adapter 21 of the anti-rotation assembly 2 to the side cover plate 12 of the hub motor 1. Then, the screws 4 are inserted through the second locking holes 228 of the second lugs 227 to lock the second adapter 22 of the anti-rotation assembly 2 to the fork assembly 3. One of the mounting portions 31 of the fork assembly 3 is simultaneously fitted to the outer periphery of the second ring 222 of the second adapter 22. In this way, the first adapter 21 and the second adapter 22 of the anti-rotation assembly 2 are fixed to one side of the hub motor 1 and the left rear fork 33 of the fork assembly 3, respectively.

[0067] Continuously, the first inclined surface 214 of the first adapter 21 abuts against the second inclined surface 224 of the second adapter 22. The outer periphery of the first ring 212 abuts against the inner periphery of the stop flange 225 of the second base 221. The first adapter 21 and the second adapter 22 are mutually clamped by the first inclined surface 214 and the second inclined surface 224. Since the first inclined surface 214 and the second inclined surface 224 are symmetrically designed, and the second base 221 allows the first inclined surface 214 to abut against the second inclined surface 224 from a specific direction through the opening 226 and stops the first ring 212 by the stop flange 225, the present application provides only a single direction for the first adapter 21 and the second adapter 22 to be clamped, which is a foolproof mechanism for the assembly of the anti-rotation assembly 2.

[0068] Furthermore, the through shaft 32 of the rear fork assembly 3 penetrates the through hole 11 of the hub motor 1, the first shaft hole 213 of the first adapter 21 and the second shaft hole 223 of the second adapter 22, and one end of the through shaft 32 is assembled with the mounting portion 31 of the rear fork assembly 3 without sleeving the second adapter 22, and is locked by a nut 5 so that the nut 5 abuts against the right rear fork 34 of the rear fork assembly 3, and the other end of the through shaft 32 is locked by a quick release screw 6 so that the quick release handle abuts against the left rear fork 33 of the rear fork assembly 3, thereby completing the installation. At this time, in the state that the hub motor 1, the anti-rotation assembly 2 and the rear fork assembly 3 are fastened to each other, the first adapter 21 and the second adapter 22 will generate a force perpendicular to the first inclined surface 214 and the second inclined surface 224, thereby achieving the effect of pressing.

[0069] Therefore, when the hub motor 1 rotates, the through shaft 32 originally penetrated in the through hole 11 of the hub motor 1 will be driven to rotate at the same time. However, the through shaft 32 also penetrates the first shaft hole 213 and the second shaft hole 223 of the anti-rotation assembly 2, and in the state that the first inclined surface 214 of the first adapter 21 and the second inclined surface 224 of the second adapter 22 are pressed against each other, the through shaft 32 is clamped by the first adapter 21 and the second adapter 22 and cannot rotate, so the hub motor 1 cannot drive the through shaft 32, and the fixed part between the rear fork assembly 3 and the hub motor 1 will not loosen due to the rotation of the hub motor 1, thereby avoiding the problem of invalid output power of the hub motor 1, thereby achieving the effect of anti-rotation.

[0070] In addition, the first adapter 21 of the anti-rotation assembly 2 can be assembled with the hub motor 1 through the first accessory group 35 of the rear fork assembly 3. The first accessory group 35 is provided with a plurality of insertion slot (not shown), and the inner periphery of the first ring portion 212 of the first adapter 21 is provided with an inner edge piece seat 217 and a plurality of insertion hole 218 arranged on the inner edge piece seat 217, so that a plurality of insertion pieces 7 can be penetrated in the insertion slot and the insertion hole 218, and fixed to the hub motor 1, so that the first adapter 21 is more stable, and the first accessory group 35 is accommodated and fixed in the first shaft hole 213 of the first adapter 21, and the first communication hole of the first accessory group 35 is communicated with the first shaft hole 213 of the first adapter 21. The second accessory group 36 is provided with a plurality of fixing slots 361, and the second ring portion 222 of the second adapter 22 is provided with a plurality of fixing holes 229 corresponding to the fixing slots 361 of the second accessory group 36, so that a plurality of fixing pieces 8 are fixed in the fixing slots 361 and the fixing holes 229, so that the second adapter 22 and the second accessory group 36 are fixed, and the second accessory group 36 is accommodated and fixed in the second shaft hole 223 of the second adapter 22, and the second communication hole of the second accessory group 36 is communicated with the second shaft hole 223 of the second adapter 22.

[0071] After the first accessory group 35 and the second accessory group 36 are increased, the through shaft 32 is installed, and the through hole 11 of the hub motor 1, the first shaft hole 213 of the first adapter 21 of the anti-rotation assembly 2, the first communication hole of the first accessory group 35 of the rear fork assembly 3, and the second communication hole of the second accessory group 36 of the rear fork assembly 3 are provided. After locking the nuts 5 at both ends of the through shaft 32 and the quick release screws 6, the first adapter 21 and the second adapter 22 are clamped with each other through the first inclined surface 214 and the second inclined surface 224. The outer periphery of the first ring part 212 abuts against the inner periphery of the stop flange 225 of the second base 221. Since the first adapter 21 and the second adapter 22 are fixed to the first accessory group 35 and the second accessory group 36 respectively, they have a more stable structure. When the first inclined surface and the second inclined surface 224 abut against each other, the abutment position will not deviate, and the pressing effect is easier to achieve.

[0072] From the above implementation description, compared with the prior art, the present application has the following advantages:

[0073] 1. The foolproof anti-rotation structure of the electric bicycle, after the hub motor, the anti-rotation assembly and the rear fork assembly are installed, the inclined surfaces of the first adapter and the second adapter of the anti-rotation assembly abut against each other and generate a pressing force to fix the through shaft. In this way, the through shaft will not be driven when the hub motor rotates, avoiding loosening of the part fixed by the rear fork assembly and the hub motor, so as to achieve the anti-rotation mechanism.

[0074] 2. The foolproof anti-rotation structure of the electric bicycle, the first adapter and the second adapter of the anti-rotation assembly have symmetrical inclined surface designs, and the inclined surface of the second adapter is surrounded by a stop flange. Therefore, the first adapter can only abut against the second adapter in a single direction, so as to achieve the foolproof mechanism.

[0075] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although each embodiment is described above, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art can make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A foolproof anti-rotation structure of an electric bicycle, characterized in that, The application relates to a hub motor, comprising: a hub motor having a through hole and a side cover plate; a rotation prevention assembly, comprising a first adapter fixed to the side cover plate of the hub motor and a second adapter, the first adapter having a first base, a first ring formed by protruding from the first base, and a first shaft hole penetrating through the first base and the first ring, a first inclined surface being formed at one end of the first ring, the second adapter having a second base, a second ring formed by protruding from the second base, and a second shaft hole penetrating through the second base and the second ring, a second inclined surface and a stop flange surrounding the second inclined surface being formed on the second base, wherein the first inclined surface abuts against the second inclined surface, and the outer periphery of the first ring abuts against the inner periphery of the stop flange of the second base; a rear fork assembly having two mounting portions and a through shaft, the through shaft penetrating through the through hole of the hub motor, the first shaft hole of the first adapter of the rotation prevention assembly, and the second shaft hole of the second adapter of the rotation prevention assembly, one of the mounting portions being connected to one end of the through shaft, and the other mounting portion being connected to the second ring of the second adapter of the rotation prevention assembly.

2. The fool-proof anti-rotation structure of the electric bicycle according to claim 1, characterized in that, The first base of the first adapter of the rotation prevention assembly further protrudes to form a plurality of first lugs, a first locking hole being arranged on each of the first lugs to be locked to the side cover plate of the hub motor.

3. The fool-proof anti-rotation structure of the electric bicycle according to claim 1, characterized in that, The second base of the second adapter of the rotation prevention assembly further protrudes to form a plurality of second lugs, a second locking hole being arranged on each of the second lugs to be locked to the rear fork assembly.

4. The fool-proof anti-rotation structure of the electric bicycle according to claim 1, characterized in that, The stop flange of the second adapter of the rotation prevention assembly further has an opening, and the outer periphery of the first ring of the first adapter partially abuts against the inner periphery of the stop flange of the second base.

5. The fool-proof anti-rotation structure of the electric bicycle according to claim 1, characterized in that, The rear fork assembly further has a first accessory group and a second accessory group, the first accessory group being accommodated in the first shaft hole of the first adapter, a first communication hole of the first accessory group being communicated with the first shaft hole, and the second accessory group being accommodated in the second shaft hole of the second adapter, a second communication hole of the second accessory group being communicated with the second shaft hole.

6. The fool-proof anti-rotation structure of the electric bicycle according to claim 5, characterized in that, The through shaft penetrates through the through hole of the hub motor, the first shaft hole of the first adapter of the rotation prevention assembly, the first communication hole of the first accessory group of the rear fork assembly, and the second communication hole of the second accessory group of the rear fork assembly.

7. The fool-proof anti-rotation structure of the electric bicycle according to claim 5, characterized in that, The first accessory group has a plurality of insertion grooves, the inner periphery of the first ring of the first adapter corresponding to the plurality of insertion grooves of the first accessory group is provided with an inner edge seat and a plurality of insertion hole arranged on the inner edge seat, and a plurality of insertion pins are arranged in the plurality of insertion grooves and the plurality of insertion holes, so that the first accessory group is arranged in the first shaft hole of the first adapter.

8. The fool-proof anti-rotation structure of the electric bicycle according to claim 5, characterized in that, The second accessory group has a plurality of fixing grooves, the second ring of the second adapter corresponding to the plurality of fixing grooves of the second accessory group is provided with a plurality of fixing holes, and a plurality of fixing pins are arranged in the plurality of fixing grooves and the plurality of fixing holes, so that the second accessory group is arranged in the second shaft hole of the second adapter.

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