CN222663698U - Bicycle power mechanism - Google Patents

Abstract

The present application discloses a bicycle power mechanism, which relates to the technical field of bicycles, and includes a crank, a toothed disc and a baffle, wherein the toothed disc is mounted on the crank, the baffle is engaged with the toothed disc, a stopper is arranged between the baffle and the toothed disc, and the stopper allows a gap between the baffle and the toothed disc. The present application facilitates the assembly and disassembly of the baffle on the toothed disc through the engagement relationship formed between the baffle and the toothed disc, and is convenient for practical use.

Description

Bicycle power mechanism

Technical Field

The application relates to the technical field of bicycles, in particular to a bicycle power mechanism.

Background

Bicycles, also known as bicycles or scooters, are typically two-wheeled small land vehicles. The bicycle is used as exercise and bicycle travel by more and more people as body-building equipment, a bicycle power mechanism exists in the bicycle, and a rider applies force to the bicycle power mechanism to provide power for the bicycle through the bicycle power mechanism.

The bicycle power mechanism comprises a crank, a tooth disc and a baffle plate, wherein the baffle plate is arranged on the tooth disc, the tooth disc is fixed on the crank, and the baffle plate is used for protecting. However, the mounting mode of the baffle on the dental tray is complicated, and certain inconvenience is brought to actual maintenance and replacement work.

Based on this, we propose a bicycle power mechanism.

Disclosure of utility model

In order to solve the problems in the prior art, the application provides a bicycle power mechanism.

In order to achieve the above purpose, the present application adopts the following technical scheme:

The utility model provides a bicycle power unit, includes crank, tooth dish and baffle, the tooth dish is installed on the crank, baffle and tooth dish joint cooperation, be provided with the fender position piece between baffle and the tooth dish, keep off the position piece and make to have the clearance between baffle and the tooth dish.

Further, at least three clamping parts are formed on one side of the baffle, and a clamping hole I matched with the clamping parts is formed on the dental tray.

Further, the clamping part is a cylinder with a cross groove, and the first clamping hole is a stepped hole.

Further, the number of the clamping portions is five, and the clamping portions are circumferentially distributed on the baffle.

Further, the gear piece is an annular plate, and the annular plate and the dental tray or the baffle are integrally formed.

Further, at least three convex columns are formed on one side of the dental tray, and a second clamping hole matched with the convex columns is formed on the baffle.

Further, the dental tray comprises a body part and a meshing part arranged on the periphery of the body part, the meshing part comprises a first tooth part and a second tooth part, the first tooth part and the second tooth part are arranged on the periphery of the body part at intervals, and the thickness of the first tooth part is smaller than that of the second tooth part.

Further, a spline shaft is arranged on the crank, and a shaft hole matched with the spline shaft is formed in the center of the body.

Compared with the prior art, the application has the following beneficial effects:

The application is convenient for assembling and disassembling the baffle on the dental tray and is convenient for practical use by the clamping and matching relation formed between the baffle and the dental tray.

Drawings

FIG. 1 is a front view of embodiment 1 of the present application;

FIG. 2 is a side view of embodiment 1 of the present application;

FIG. 3 is an exploded view of example 1 of the present application;

fig. 4 is a schematic structural diagram of embodiment 2 of the present application.

Reference numerals in the drawings:

1. The gear comprises a crank, 2 dental trays, 21, a body part, 211, a first clamping hole, 212, a convex column, 22, a meshing part, 221, a first tooth part, 222, a second tooth part, 23, a shaft hole, 24, a through hole, 3, a baffle plate, 31, a clamping part, 32, a second clamping hole and 4, a gear piece.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The application provides a bicycle power mechanism.

Example 1:

As shown in fig. 1 to 3, the bicycle power mechanism comprises a crank 1, a tooth disc 2 and a baffle plate 3, wherein the tooth disc 2 is arranged on the crank 1, the baffle plate 3 is arranged on the tooth disc 2, the baffle plate 3 is matched with the tooth disc 2 in a clamping way, a gear piece 4 is formed between the baffle plate 3 and the tooth disc 2, and a gap is formed between the baffle plate 3 and the tooth disc 2 by the gear piece 4, so that the baffle plate 3 cannot be contacted with a transmission chain wound on the tooth disc 2.

In this embodiment, the crank 1 is made of aluminum alloy, but the crank 1 may be made of steel. The one end that crank 1 and axis are connected is formed with the festoon axle, and the middle part of tooth dish 2 is formed with and flowers axle complex shaft hole 23, and the shaft hole 23 cover on the tooth dish 2 is on the festoon axle, and the mesa conflict on one side of tooth dish 2 and crank 1 is acted on the tip of flowers axle through stamping technology for tooth dish 2 is fixed in on the crank 1, forms non-detachable mounting structure. So set up, effectively avoid riding the in-process, tooth dish 2 takes place not hard up phenomenon with crank 1.

The dental tray 2 includes a main body 21 and engaging portions 22, the engaging portions 22 are located at the periphery of the main body 21, and the engaging portions 22 are circumferentially distributed. The inside and the outside of the body part 21 are planes which are parallel to each other and are staggered, connecting ribs are formed between the inside and the outside of the body part 21, the connecting ribs are circumferentially distributed and used for connecting the inside and the outside of the body part 21, through holes 24 which are equal to the connecting ribs are formed between the connecting ribs and the inside and the outside of the body part 21, and the through holes 24 are used for reducing the consumption of the dental tray 2. The number of the connecting ribs is at least three, preferably five.

Specifically, the engaging portion 22 includes equal amounts of a first tooth portion 221 and a second tooth portion 222, where the first tooth portion 221 and the second tooth portion 222 are circumferentially distributed on the periphery of the body portion 21 and are spaced apart, and the thickness of the first tooth portion 221 is smaller than that of the second tooth portion 222. So arranged that the engagement portion 22 is adapted to the drive chain.

In order to realize stable installation of the baffle plate 3 on the dental disc 2, at least three clamping parts 31 are formed on one side of the baffle plate 3, and a clamping hole I211 matched with the clamping parts 31 is formed on the dental disc 2. The clamping part 31 is a cylinder with a cross groove, the first clamping hole 211 is a stepped hole, stable installation of the baffle 3 on the dental tray 2 is facilitated, and the clamping part 31 is completely hidden in the stepped hole. Preferably, the number of the clamping parts 31 is five, the clamping parts 31 are circumferentially distributed on the baffle 3, and the clamping parts 31 are correspondingly arranged at the end parts of the connecting ribs.

In addition, after the baffle 3 is mounted on the dental tray 2, a screw can be screwed at the middle part of the clamping part 31, so that the stability of the connection between the baffle 3 and the dental tray 2 is further realized.

The gear piece 4 is an annular plate, and the annular plate and the dental tray 2 or the baffle 3 are integrally formed. Generally, the gear piece 4 and the baffle 3 are integrally formed and are formed by plastic injection molding, so that the processing difficulty and the production cost are effectively reduced.

In order to achieve further protection of the baffle 3, the outer edges of the baffle 3 are chamfered.

Example 2:

as shown in fig. 4, this embodiment is different from embodiment 1 in that at least three protruding columns 212 are formed on one side of the dental tray 2, and two clamping holes 32 adapted to the protruding columns 212 are formed on the baffle 3. Preferably, the number of the protruding columns 212 is five, the protruding columns 212 are uniformly distributed on the dental tray 2, and the protruding columns 212 are correspondingly arranged with the connecting ribs. Specifically, the boss 212 and the dental tray 2 may be integrally formed, or may be screwed.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (8)

1. The utility model provides a bicycle power unit, includes crank (1), tooth dish (2) and baffle (3), tooth dish (2) are installed on crank (1), a serial communication port, baffle (3) and tooth dish (2) joint cooperation, be provided with between baffle (3) and tooth dish (2) and keep off position piece (4), keep off position piece (4) and make to have the clearance between baffle (3) and the tooth dish (2).

2. The bicycle power mechanism according to claim 1, wherein at least three clamping parts (31) are formed on one side of the baffle plate (3), and a clamping hole I (211) matched with the clamping parts (31) is formed on the dental tray (2).

3. The bicycle power mechanism of claim 2, wherein the clamping portion (31) is a cylinder with a cross slot formed therein, 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 said clamping parts (31) is five, said clamping parts (31) being circumferentially distributed on the barrier (3).

5. A bicycle power mechanism according to claim 1, characterized in that the gear piece (4) is an annular plate which is integrally formed with the toothed disc (2) or the baffle plate (3).

6. The bicycle power mechanism according to claim 1, wherein at least three protruding columns (212) are formed on one side of the dental tray (2), and two clamping holes (32) matched with the protruding columns (212) are formed on the baffle plate (3).

7. The bicycle power mechanism as claimed in claim 1, wherein the crankset (2) comprises a body portion (21) and an engagement portion (22) provided at a periphery of the body portion (21), the engagement 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 provided at a periphery of the body portion (21) at intervals, and a thickness of the first tooth portion (221) is smaller than a 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 spline, and the center of the body part (21) is formed with a shaft hole (23) adapted to the spline.