Bicycle power mechanism

Abstract

The utility model discloses a bicycle power mechanism, and relates to the technical field of bicycles, the bicycle power mechanism comprises a crank, a chain wheel and a baffle, the chain wheel is mounted on the crank, the baffle is clamped and matched with the chain wheel, a gear part is arranged between the baffle and the chain wheel, and a gap is formed between the baffle and the chain wheel through the gear part. Through the clamping matching relation formed between the baffle and the chain wheel, the baffle can be conveniently assembled and disassembled on the chain wheel, and actual use is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of bicycles, and in particular to a bicycle power mechanism. Background Art

[0002] Bicycles, also known as bicycles or bikes, are usually small two-wheeled land vehicles. People ride on them and use pedals as power. They are green and environmentally friendly means of transportation, used for travel and outings. More and more people use bicycles as fitness equipment for cycling and cycling. There is a bicycle power mechanism in the bicycle. The rider applies force to the bicycle power mechanism, thereby providing power to the bicycle through the bicycle power mechanism.

[0003] The bicycle power mechanism comprises a crank, a toothed disc and a baffle, wherein the baffle is mounted on the toothed disc, the toothed disc is fixed on the crank, and the baffle is used for protection. However, the installation method of the baffle on the toothed disc is relatively cumbersome, which brings certain inconvenience to the actual maintenance and replacement work.

[0004] Based on this, we proposed a bicycle power mechanism. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the present application provides a bicycle power mechanism.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A bicycle power mechanism comprises a crank, a chainring and a baffle, wherein the chainring is mounted on the crank, the baffle is engaged with the chainring, a stopper is arranged between the baffle and the chainring, and a gap is formed between the baffle and the chainring.

[0008] Furthermore, at least three clamping parts are formed on one side of the baffle, and a clamping hole 1 matched with the clamping part is formed on the crankset.

[0009] Furthermore, the clamping portion is a cylinder formed with a cross groove, and the first clamping hole is a stepped hole.

[0010] Furthermore, the number of the clamping parts is five, and the clamping parts are distributed in a circumference on the baffle.

[0011] Furthermore, the shifting member is an annular plate, and the annular plate is integrally formed with the toothed disc or the baffle.

[0012] Furthermore, at least three bosses are formed on one side of the crankset, and a second clamping hole matched with the bosses is formed on the baffle.

[0013] Furthermore, the crankset includes a main body and a meshing portion arranged at the periphery of the main body, the meshing portion includes a first tooth portion and a second tooth portion, the first tooth portion and the second tooth portion are arranged at intervals at the periphery of the main body, and the thickness of the first tooth portion is less than the thickness of the second tooth portion.

[0014] Furthermore, a flower axis is arranged on the crank, and an axis hole matching with the flower axis is formed at the center of the main body.

[0015] Compared with the prior art, this application has the following beneficial effects:

[0016] The present application forms a snap-fitting relationship between the baffle plate and the chainring plate, which facilitates the installation and removal of the baffle plate on the chainring plate and is convenient for practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of Example 1 of the present application;

[0018] Figure 2 It is a side view of Example 1 of the present application;

[0019] Figure 3 This is an explosion diagram of Example 1 of the present application;

[0020] Figure 4 This is a structural diagram of Example 2 of the present application.

[0021] Reference numerals in the figures:

[0022] 1. Crank; 2. Chainring; 21. Main body; 211. Clamping hole 1; 212. Boss; 22. Engaging portion; 221. First tooth portion; 222. Second tooth portion; 23. Axial hole; 24. Through hole; 3. Baffle; 31. Clamping portion; 32. Clamping hole 2; 4. Shifting member. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] The present application provides a bicycle power mechanism.

[0025] Embodiment 1:

[0026] like Figures 1 to 3As shown, the bicycle power mechanism includes a crank 1, a chainring 2 and a baffle 3, wherein the chainring 2 is mounted on the crank 1, and the baffle 3 is mounted on the chainring 2, the baffle 3 is snap-fitted with the chainring 2, and a stopper 4 is formed between the baffle 3 and the chainring 2, and the stopper 4 allows a gap to exist between the baffle 3 and the chainring 2, so that the baffle 3 will not contact the transmission chain wound on the chainring 2.

[0027] In this embodiment, the crank 1 is made of aluminum alloy. Of course, the crank 1 can also be a steel structure. A flower shaft is formed at one end of the crank 1 connected to the middle shaft. A shaft hole 23 matching the flower shaft is formed in the middle of the chainring 2. The shaft hole 23 on the chainring 2 is sleeved on the flower shaft, and one side of the chainring 2 contacts the table on the crank 1. The stamping technology acts on the end of the flower shaft so that the chainring 2 is fixed on the crank 1 to form a non-detachable installation structure. This arrangement effectively prevents the chainring 2 and the crank 1 from loosening during riding.

[0028] The crankset 2 includes a body 21 and a meshing portion 22, the meshing portion 22 is located at the periphery of the body 21, and the meshing portion 22 is distributed circumferentially. The inside and outside of the body 21 are parallel and offset planes, and connecting ribs are formed between the inside and outside of the body 21, and the connecting ribs are distributed circumferentially and used to connect the inside and outside of the body 21. The connecting ribs and the inside and outside of the body 21 are formed with through holes 24 equal to the connecting ribs, and the through holes 24 are used to reduce the amount of the crankset 2. The number of the connecting ribs is at least three, and preferably, the number of the connecting ribs is five.

[0029] Specifically, the meshing portion 22 includes an equal number of first teeth 221 and second teeth 222, which are circumferentially distributed on the periphery of the body portion 21 and are spaced apart, and the thickness of the first teeth 221 is less than the thickness of the second teeth 222. This arrangement enables the meshing portion 22 to be adapted to the transmission chain.

[0030] In order to achieve stable installation of the baffle plate 3 on the crankset 2, at least three clamping parts 31 are formed on one side of the baffle plate 3, and a clamping hole 211 matching the clamping part 31 is formed on the crankset 2. The clamping part 31 is a cylinder formed with a cross groove, and the clamping hole 211 is a stepped hole, which is convenient for stable installation of the baffle plate 3 on the crankset 2, and the clamping part 31 is completely hidden in the stepped hole. Preferably, the number of the clamping parts 31 is five, and the clamping parts 31 are distributed circumferentially on the baffle plate 3, and the clamping parts 31 are arranged corresponding to the ends of the connecting ribs.

[0031] In addition, after the baffle plate 3 is installed on the chainring 2 , a screw may be threaded into the middle of the clamping portion 31 to further achieve stability in the connection between the baffle plate 3 and the chainring 2 .

[0032] The stopper 4 is an annular plate, which is integrally formed with the toothed disc 2 or the baffle 3. Generally, the stopper 4 is integrally formed with the baffle 3 by plastic injection molding, which effectively reduces the processing difficulty and production cost.

[0033] In order to achieve further protection of the baffle plate 3, the outer edge of the baffle plate 3 is chamfered.

[0034] Embodiment 2:

[0035] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that at least three bosses 212 are formed on one side of the crankset 2, and a second clamping hole 32 adapted to the bosses 212 is formed on the baffle 3. Preferably, the number of the bosses 212 is five, and the bosses 212 are evenly distributed on the crankset 2, and the bosses 212 and the connecting ribs are arranged correspondingly. Specifically, the bosses 212 and the crankset 2 can be integrally formed or threadedly connected.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bicycle power mechanism, comprising a crank (1), a toothed disc (2) and a baffle (3), wherein the toothed disc (2) is mounted on the crank (1), characterized in that: The baffle plate (3) is engaged with the toothed disc (2), a stopper (4) is provided between the baffle plate (3) and the toothed disc (2), and the stopper (4) allows a gap to exist between the baffle plate (3) and the toothed disc (2).

2. A bicycle power mechanism according to claim 1, characterized in that: At least three clamping parts (31) are formed on one side of the baffle (3), and a clamping hole (211) matched with the clamping part (31) is formed on the toothed disc (2).

3. A bicycle power mechanism according to claim 2, characterized in that: The clamping portion (31) is a cylinder formed with a cross groove, and the first clamping hole (211) is a stepped hole.

4. A bicycle power mechanism according to claim 3, characterized in that: The number of the clamping parts (31) is five, and the clamping parts (31) are distributed on the baffle (3) in a circumferential manner.

5. A bicycle power mechanism according to claim 1, characterized in that: The shifting member (4) is an annular plate, and the annular plate is integrally formed with the toothed disc (2) or the baffle plate (3).

6. A bicycle power mechanism according to claim 1, characterized in that: At least three protruding columns (212) are formed on one side of the toothed disc (2), and a second clamping hole (32) adapted to the protruding columns (212) is formed on the baffle plate (3).

7. A bicycle power mechanism according to claim 1, characterized in that: The crankset (2) comprises a main body (21) and a meshing portion (22) arranged at the periphery of the main body (21); the meshing portion (22) comprises a first tooth portion (221) and a second tooth portion (222); the first tooth portion (221) and the second tooth portion (222) are arranged at intervals at the periphery of the main body (21); the thickness of the first tooth portion (221) is smaller than the thickness of the second tooth portion (222).

8. A bicycle power mechanism according to claim 7, characterized in that: The crank (1) is provided with a flower axis, and the center of the main body (21) is formed with an axis hole (23) adapted to the flower axis.

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