Detachable bicycle chain wheel cover

Abstract

The utility model discloses a detachable bicycle chain wheel cover, which comprises a fixing seat, a fixing frame, a reinforcing sheet and an annular cover sheet, the fixing seat is used for being fixed on a bicycle frame and is coaxially arranged with a chain wheel of a bicycle, the fixing frame is detachably connected on the fixing seat and comprises an arc-shaped part and an extension part, and the reinforcing sheet is arranged on the arc-shaped part. The arc-shaped part is detachably connected with the fixing seat, the extension part integrally and horizontally extends from the upper end of the arc-shaped part, the reinforcing sheet is arranged on the extension part of the fixing frame, and the annular cover sheet is detachably connected with the arc-shaped part of the fixing frame and the reinforcing sheet. Therefore, the chain wheel cover capable of being matched with bicycle chain wheels of different sizes is formed.

Description

Technical Field

[0001] The utility model relates to a bicycle sprocket cover, in particular to a bicycle sprocket cover which can be disassembled to match different size combinations. Background Art

[0002] The existing bicycle mainly uses the rider's foot to pedal to drive a sprocket to rotate, and then transmits the power to a sprocket arranged on the rear wheel through a chain engaged with the sprocket to drive the rear wheel to rotate and move forward. In order to prevent the sprocket and the chain from being interfered with or damaged by foreign objects, the existing bicycle is provided with a sprocket cover for protecting the sprocket and the chain. The existing sprocket cover is an integrally formed structure. Therefore, if it is desired to match sprockets of different sizes, the existing sprocket cover cannot be adjusted to match sprockets of different sizes. Sprocket covers of different sizes need to be manufactured, which will increase the overall cost. Therefore, the existing sprocket cover needs to be further improved. Utility Model Content

[0003] In view of the shortcomings of the existing sprocket cover structure and use, the inventor of the present utility model has finally developed the present utility model which can improve the existing shortcomings through continuous research and improvement.

[0004] The utility model mainly provides a detachable sprocket cover, which can be adjusted to match sprockets of different sizes, or parts of different sizes can be replaced to match sprockets of different sizes, so as to achieve the purpose of improving the overall practicality of the sprocket cover and reducing the overall manufacturing cost.

[0005] To achieve the above object, the utility model provides a detachable sprocket cover, which includes:

[0006] A fixing seat, the fixing seat is used to be fixed on the bicycle frame and is coaxially arranged with the sprocket of the bicycle;

[0007] A fixing frame, which is detachably connected to the fixing seat, and includes an arc-shaped portion and an extension portion, wherein the arc-shaped portion and the fixing seat are detachably connected to each other, and the extension portion is integrally extended horizontally from the upper end of the arc-shaped portion;

[0008] a reinforcing sheet disposed on the extension portion of the fixing frame; and

[0009] An annular cover plate is detachably connected to the arc portion of the fixing frame and the reinforcing plate.

[0010] In the detachable bicycle sprocket cover, the reinforcing sheet can be slidably sleeved on the extension part of the fixing frame.

[0011] The detachable bicycle sprocket cover, wherein the annular cover plate is connected to the reinforcing plate by a quick-release structure, the quick-release structure comprises a fixing hole penetrating the annular cover plate and a fixing bolt protruding from the reinforcing plate, each fixing hole comprises a set hole and a locking hole, wherein the aperture of the set hole is larger than the aperture of the locking hole, and the fixing bolt comprises a head and a body, the body integrally extending from the opposite reinforcing plate, and the head protruding from one end of the body away from the reinforcing plate, the outer diameter of the head is larger than the outer diameter of the body, smaller than the aperture of the set hole of the fixing hole but larger than the aperture of the locking hole.

[0012] The detachable bicycle sprocket cover comprises a reinforcing plate which comprises a body which is slidably sleeved on the extension of the fixing frame and a connecting plate which extends downward from a side surface of the body. The fixing bolt of the quick-release structure is arranged on the connecting plate.

[0013] The detachable bicycle sprocket cover has a main body of the reinforcing plate formed with a slide rail which can be slidably sleeved on the extension part of the fixing frame.

[0014] The detachable bicycle sprocket cover has at least one clamping portion clamped on the outer peripheral edge of the annular cover sheet, which is arranged on the inner edge of the arc-shaped portion of the fixing frame.

[0015] In the detachable bicycle sprocket cover, the fixed frame extension part is different from the end connected to the arc-shaped part and is further provided with a connecting part for connecting to the rear fork tube of the bicycle.

[0016] Through the technical means of the utility model, the sprocket cover provided by the utility model can match the size range of different sprockets, further improving the flexibility of use of the sprocket cover of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional appearance diagram of the utility model.

[0018] Figure 2 It is a three-dimensional exploded view of the utility model.

[0019] Figure 3 It is a partial enlarged view of the quick-release structure of the utility model.

[0020] Figure 4 This is a three-dimensional appearance diagram of the utility model for adjusting and matching sprockets of different sizes.

[0021] Explanation of symbols:

[0022] 10: Fixed seat

[0023] 12: base body

[0024] 14: Wing

[0025] 20:Fixed bracket

[0026] 22: arc part

[0027] 23: Card making department

[0028] 24: Extension

[0029] 30: Reinforcement sheet

[0030] 32:Ontology

[0031] 322: Slide rail

[0032] 34: Connecting piece

[0033] 36: Fixed bolt

[0034] 362: Body

[0035] 364: Head

[0036] 40,40A: Ring cover

[0037] 42:Fixing hole

[0038] 422: Insert hole

[0039] 424: Locking hole

[0040] 50: Connection DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for the description of each embodiment. Obviously, the drawings described below are only some examples or embodiments of the utility model. For ordinary technicians in this field, the utility model can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0042] Please refer to Figure 1 and Figure 2The sprocket cover of the utility model mainly includes a fixing seat 10, a fixing frame 20, a reinforcing sheet 30 and an annular cover sheet 40. The fixing seat 10 is used to be fixed on the bicycle frame and is coaxially arranged with the sprocket of the bicycle. It can include a disc-shaped seat body 12 and two wings 14. The seat body 12 is used to be fixed on the bicycle frame and is coaxially arranged with the sprocket. The two wings 14 extend from the periphery of the seat body 12 in different directions. The fixing frame 20 is detachably connected to the fixing seat 10. Preferably, the fixing frame 20 and the two wings 14 of the fixing seat 10 are combined with each other. The fixing frame 20 mainly includes an arc portion 22 and an extension portion 24. The arc portion 22 and the fixing seat 1 The two wings 12 of 0 are detachably connected to each other, and the arc portion 22 can be detachably fixedly combined with the wing 12 of the fixing seat 10 by means of bolts, nuts or snap-fitting, etc. The extension portion 24 extends horizontally from the upper end of the arc portion 22 as a whole, and the reinforcing sheet 30 is arranged on the extension portion 24 of the fixing frame 20, wherein the reinforcing sheet 30 can be slidably sleeved on the extension portion 24 of the fixing frame 20, and the reinforcing sheet 30 can include a body 32 slidably sleeved on the extension portion 24 of the fixing frame 20 and a connecting sheet 34 extending downward from a side surface of the body 32, and a slide rail 322 slidably sleeved on the extension portion 24 of the fixing frame 20 is formed on the body 32 of the reinforcing sheet 30.

[0043] The annular cover sheet 40 is detachably connected to the arc portion 22 of the fixing frame 20 and the reinforcing sheet 30. Figure 3 , wherein the annular cover plate 40 is connected to the reinforcing plate 30 through a quick release structure. Preferably, the quick release structure is arranged on the connecting plate 34 of the reinforcing plate 32. The quick release structure may include a fixing hole 42 penetrating the annular cover plate 40 and a fixing bolt 36 convexly arranged on the reinforcing plate 34. Each fixing hole 42 includes a set hole 422 and a locking hole 424. The hole diameter of the set hole 422 is larger than the hole diameter of the locking hole 424. The fixing bolt 36 includes a fixing hole 422 and a locking hole 424. It comprises a body 362 and a head 364. The body 362 integrally extends from the opposite reinforcing plate 34, and the head 364 is protruded from the end of the body 362 away from the reinforcing plate 34. The outer diameter of the head 364 is larger than the outer diameter of the body 362, smaller than the aperture of the insertion hole 422 of the fixing hole 42, but larger than the aperture of the locking hole 424. At least one clamping portion 23 clamped on the outer peripheral edge of the annular cover plate 40 is provided on the inner edge of the arc-shaped portion 22 of the fixing frame 20.

[0044] Therefore, during assembly, the edge of the annular cover sheet 40 is first inserted into the clamping portion 23 on the arc-shaped portion 22 of the fixing frame 20, and the fixing hole 42 on the annular cover sheet 40 is aligned with the fixing bolt 36 of the reinforcing sheet 34, so that the head 364 of the fixing bolt 36 passes through the insertion hole 422 of the fixing hole 42, and then the annular cover sheet 40 can be slightly rotated or the reinforcing sheet 40 can be slightly slid so that the body 362 of the fixing bolt 36 is inserted into the locking hole 424 of the fixing hole 42, so that the annular cover sheet 40 is fixedly connected to the reinforcing sheet 30, and finally the wing 14 of the fixing seat 10 is connected to the reinforcing sheet 30 by bolts or other fixing parts. On the arc portion 22 of the fixing frame 20, a connecting portion 50 for connecting to the rear fork tube of the bicycle is further provided at one end of the extension portion 24 of the fixing frame 20 different from the end connected to the arc portion 22. In this way, the assembly of the sprocket cover can be completed, and the sprocket cover of the present invention can be assembled on the frame of the bicycle in conjunction with a sprocket of a specific size through the fixing frame 10 and the connecting portion 50. Therefore, through the arrangement of the fixing frame 20 and the annular cover sheet 40, a protective effect can be exerted on the sprocket and chain of the bicycle to prevent foreign objects from hitting or getting stuck in the sprocket or chain, causing damage to the sprocket or jamming of the chain.

[0045] When you want to use the sprocket cover of the present invention with sprockets of different sizes, please refer to Figure 3 and Figure 4 , the annular cover sheet 40 can be slightly rotated or the reinforcing sheet 30 can be slightly slid to make the body 362 of the fixing bolt 36 disengage from the locking hole 424, and the head 364 of the fixing bolt 36 is opposite to the insertion hole 422 of the fixing hole 42, so that the fixing bolt 36 can be disengaged from the fixing hole 42, so that the annular cover sheet 40 and the reinforcing sheet 30 are separated from each other, and then the annular cover sheet 40 is disengaged from the clamping portion 23 on the arc-shaped portion 22 of the fixing frame 20, and the annular cover sheet 40 can be detached from the fixing frame 20, and then the annular cover sheets 40 of different sizes can be removed. 0A is assembled on the fixing frame 20 and the reinforcing sheet 30. At this time, in order to match the annular cover sheets 40A of different sizes, the position of the reinforcing sheet 30 can be moved and adjusted along the extension portion 24 of the fixing frame 20, so that the fixing bolts 36 on the reinforcing sheet 30 can be aligned with the fixing holes 42 on the annular cover sheets 40A of different sizes. In this way, the sprocket cover of the utility model can be used with bicycle sprockets of different sizes without replacing the entire set of sprocket covers, which can improve the flexibility of the use of the sprocket cover of the utility model and can effectively reduce the overall manufacturing cost.

[0046] Secondly, if the sprocket to be replaced is too large or too small for the arc portion 22 of the fixing frame 20, then the fixing frame 20 of different sizes can be replaced to match the oversized or undersized sprocket. In this way, the size range of different sprockets that the sprocket cover of the utility model can be expanded, further improving the flexibility of the sprocket cover of the utility model.

[0047] It should be noted that, according to the explanation and elaboration of the above description, those skilled in the art to which the present disclosure belongs may also make changes and modifications to the above implementations. Therefore, the present disclosure is not limited to the specific implementations disclosed and described above, and some equivalent modifications and changes to the present disclosure should also be within the scope of protection of the claims of the present disclosure. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A detachable bicycle sprocket cover, characterized in that: It includes: A fixing seat, the fixing seat is used to be fixed on the bicycle frame and is coaxially arranged with the sprocket of the bicycle; A fixing frame, which is detachably connected to the fixing seat, and includes an arc-shaped portion and an extension portion, wherein the arc-shaped portion and the fixing seat are detachably connected to each other, and the extension portion extends horizontally from the upper end of the arc-shaped portion; a reinforcing sheet disposed on the extension portion of the fixing frame; and An annular cover plate is detachably connected to the arc portion of the fixing frame and the reinforcing plate.

2. The detachable bicycle sprocket cover according to claim 1, characterized in that: The reinforcing sheet can be slidably sleeved on the extension portion of the fixing frame.

3. The detachable bicycle sprocket cover according to claim 2, characterized in that: The annular cover plate is connected to the reinforcing plate through a quick-release structure. The quick-release structure includes a fixing hole penetrating the annular cover plate and a fixing bolt protruding from the reinforcing plate. Each fixing hole includes a sleeve hole and a locking hole, wherein the aperture of the sleeve hole is larger than the aperture of the locking hole. The fixing bolt includes a head and a body. The body extends integrally from the opposite reinforcing plate, and the head is protruding from one end of the body away from the reinforcing plate. The outer diameter of the head is larger than the outer diameter of the body, smaller than the aperture of the sleeve hole of the fixing hole, but larger than the aperture of the locking hole.

4. The detachable bicycle sprocket cover according to claim 3, characterized in that: The reinforcing plate comprises a body which is slidably sleeved on the extension part of the fixing frame and a connecting plate which extends downward from a side surface of the body. The fixing bolt of the quick-release structure is arranged on the connecting plate.

5. The detachable bicycle sprocket cover according to claim 4, characterized in that: The main body of the reinforcing plate is formed with a slide rail which can be slidably sleeved on the extension part of the fixing frame.

6. The detachable bicycle sprocket cover according to any one of claims 1 to 5, characterized in that: At least one clamping portion clamped on the outer peripheral edge of the annular cover sheet is arranged on the inner edge of the arc-shaped portion of the fixing frame.

7. The detachable bicycle sprocket cover according to claim 6, wherein: The end of the fixing frame extension part different from that connected with the arc-shaped part is further provided with a connecting part for connecting to the rear fork tube of the bicycle.

8. The detachable bicycle sprocket cover according to any one of claims 1 to 5, characterized in that: The end of the fixing frame extension part different from that connected with the arc-shaped part is further provided with a connecting part for connecting to the rear fork tube of the bicycle.

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