CN212890794U

CN212890794U - Reverse gear structure of motorcycle

Info

Publication number: CN212890794U
Application number: CN202021935720.4U
Authority: CN
Inventors: 张立成; 邓定红; 张林江; 陈杰; 郑林
Original assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Current assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-04-06
Anticipated expiration: 2030-09-07

Abstract

The utility model provides a reverse gear structure of motorcycle belongs to motorcycle technical field. It has solved the inconvenient problem of loading and unloading of the chain in the current structure of backing a gear. This reverse gear structure of motorcycle, including driving shaft and driven shaft, the cover is equipped with drive sprocket on the driving shaft, and the cover is equipped with reverse gear sprocket on the driven shaft, connects through the chain between drive sprocket and the reverse gear sprocket, has the clearance between reverse gear sprocket's the inside wall and the lateral wall of driven shaft, and the cover is equipped with the axle sleeve on the driven shaft, and axle sleeve embedding clearance sets up between reverse gear sprocket and driven shaft. This reverse gear structure of motorcycle can realize dismantling the chain fast to promote the stability that reverse gear structure used.

Description

Reverse gear structure of motorcycle

Technical Field

The utility model belongs to the technical field of the motorcycle, a reverse gear structure of motorcycle is related to.

Background

The continuous increase of current trip vehicle, people also promote gradually to the requirement of various vehicles, and the motorcycle is as vehicle commonly used, when riding, can meet the condition that needs backed a car with the motorcycle usually, the structure of reversing gear of current motorcycle is external structure of reversing gear usually, this kind of structure of reversing gear is placed in the gearbox box outside, and this structure of reversing gear is comparatively complicated, need increase more spare part, and need change the transmission part of whole car, the cost that has led to the motorcycle to reform transform is higher.

In view of the above problems, various reverse gear structures for motorcycles have been developed:

for example, the chinese patent application (patent application No. 200610003161.1) discloses a reverse gear mechanism for a motorcycle, which comprises a driving shaft and a driven shaft, wherein the driving shaft is provided with a driving sprocket, the driven shaft is provided with a driven sprocket, a transmission chain is connected between the driving sprocket and the driven sprocket, the driving sprocket is connected to the driving shaft through a key, the driven sprocket is movably sleeved on the driven shaft, or the driven sprocket is connected to the driven shaft through a key, the driving sprocket is movably sleeved on the driving shaft, the side surface of the movably sleeved driving sprocket or driven sprocket is provided with a first connecting structure, and the side surface of a gear shifting gear which is coaxial with the movably sleeved driving sprocket or driven sprocket and is connected with the sleeved shaft through a key is provided with a second connecting structure corresponding to the first connecting structure.

Although the structure realizes the reverse gear of the motorcycle by adding one transmission chain, the reverse gear structure of the motorcycle is simple, but the transmission chain can only be installed by means of a professional installation tool in the installation process, so that the whole reverse gear structure still needs to adopt a professional installation tool when being installed, and after the transmission chain is damaged, the professional installation tool is still needed to disassemble the transmission chain, so that the whole reverse gear structure is difficult to assemble and disassemble, and the maintenance is inconvenient.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a reverse gear structure of motorcycle, the utility model aims to solve the technical problem that: how to solve the inconvenient problem of loading and unloading of the chain in the current reverse gear structure.

The purpose of the utility model can be realized by the following technical proposal:

the motorcycle reverse gear structure comprises a driving shaft and a driven shaft, wherein a driving chain wheel is sleeved on the driving shaft, a reverse gear chain wheel is sleeved on the driven shaft, the driving chain wheel and the reverse gear chain wheel are connected through a chain, and the motorcycle reverse gear structure is characterized in that a gap is formed between the inner side wall of the reverse gear chain wheel and the outer side wall of the driven shaft, a shaft sleeve is sleeved on the driven shaft, and the shaft sleeve is embedded into the gap and is arranged between the reverse gear chain wheel and the driven shaft.

The working principle is as follows: because a gap is arranged between the reverse gear chain wheel and the driven shaft, the reverse gear chain wheel can be sleeved on the driven shaft firstly, at the moment, the reverse gear chain wheel can move along the driven shaft in the radial direction, the reverse gear chain wheel moves towards the driving chain wheel, the chain can be directly sleeved on the reverse gear chain wheel and the driving chain wheel, and then the shaft sleeve is embedded into the gap, at the moment, the shaft sleeve can reset the reverse gear chain wheel and tension the chain, thereby the chain is more convenient to install, the chain can be tensioned due to the arrangement of the shaft sleeve, the whole reverse gear structure is more stable to use, and when needs are dismantled the chain, also can tear out the axle sleeve earlier, move reverse gear sprocket towards the driving sprocket direction again, can take out the chain from driving sprocket and reverse gear sprocket after the chain is not hard up, and then realized dismantling fast to the chain, also can promote the stability of reversing gear structure use.

In the reverse gear structure of the motorcycle, both ends of the shaft sleeve are provided with chamfers.

The setting of this structure for the axle sleeve is in the installation, and the chamfer has certain direction effect, thereby makes the assembly of the structure of reversing gear more convenient, has promoted the installation effectiveness of the structure of reversing gear.

In the above reverse gear structure of the motorcycle, the thickness of the bushing is less than or equal to the thickness of the chain.

The thickness design of axle sleeve can make the axle sleeve can be with the chain tensioning, and the thickness of axle sleeve slightly is lighter than the thickness of chain this moment for the assembly convenience more of axle sleeve has promoted the convenience of reversing gear structure assembly, and also can realize the rapid Assembly of chain.

In the reverse gear structure of the motorcycle, the driven shaft protrudes to form the limit baffle edge, the driven shaft is sleeved with the limit baffle, one end of the limit baffle can abut against the limit baffle edge, and the reverse gear sprocket and the shaft sleeve abut against the other end of the limit baffle.

The setting of spacing fender edge and limit baffle can carry out the axial spacingly to the axle sleeve for the axle sleeve is better carry on spacingly to the sprocket of reversing gear, thereby makes the structure of reversing gear stability when using higher.

In the reverse gear structure of the motorcycle, the inner side of the shaft sleeve is recessed to form an annular gap.

The friction between axle sleeve and the driven shaft is reduced in the setting of breach to carrying out spacing back to the reverse gear sprocket, the axle sleeve can reduce the influence to reverse gear sprocket work, further promotion the stability of reversing gear structure.

Compared with the prior art, the reverse gear structure of the motorcycle has the advantages that: the reverse gear sprocket can move along the driven shaft radial direction, and the reverse gear sprocket moves towards the driving sprocket direction, and the chain can be directly sleeved on the reverse gear sprocket and the driving sprocket, and then the shaft sleeve is embedded into the gap, so that the shaft sleeve can reset the reverse gear sprocket, and the chain can be tensioned, thereby facilitating the installation of the chain and improving the convenience of chain assembly.

Drawings

Fig. 1 is a schematic structural view of the motorcycle after assembling the reverse gear structure.

Fig. 2 is a partial side view of the driven shaft in the reverse gear structure of the motorcycle.

Fig. 3 is a partial sectional view taken along a-a in fig. 2.

Fig. 4 is a schematic structural view of the sleeve in the reverse gear structure of the motorcycle.

In the figure, 1, a driving shaft; 11. a drive sprocket; 2. a driven shaft; 21. a reverse gear sprocket; 22. a limiting blocking edge; 3. a chain; 4. a gap; 5. a shaft sleeve; 51. chamfering; 52. a notch; 6. and a limiting baffle.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, the reverse gear structure of the motorcycle comprises a driving shaft 1 and a driven shaft 2, wherein a driving chain wheel 11 is sleeved on the driving shaft 1, a reverse gear chain wheel 21 is sleeved on the driven shaft 2, and the driving chain wheel 11 and the reverse gear chain wheel 21 are connected through a chain 3.

Specifically, as shown in fig. 1 to 4, a gap 4 is formed between an inner side wall of the reverse sprocket 21 and an outer side wall of the driven shaft 2, a bushing 5 is sleeved on the driven shaft 2, and the bushing 5 is inserted into the gap 4 and is disposed between the reverse sprocket 21 and the driven shaft 2.

The working principle is as follows: because the gap 4 is arranged between the reverse sprocket 21 and the driven shaft 2, the reverse sprocket 21 can be firstly sleeved on the driven shaft 2, at the moment, the reverse sprocket 21 can move along the driven shaft 2 in the radial direction, the reverse sprocket 21 moves towards the driving sprocket 11, the chain 3 can be directly sleeved on the reverse sprocket 21 and the driving sprocket 11, and then the shaft sleeve 5 is embedded into the gap 4, at the moment, the shaft sleeve 5 can reset the reverse sprocket 21 and tension the chain 3, so that the installation of the chain 3 is more convenient, and the arrangement of the shaft sleeve 5 can also tension the chain 3, so that the whole reverse structure is more stable in use, when the chain 3 needs to be disassembled, the shaft sleeve 5 can be firstly disassembled, then the reverse sprocket 21 moves towards the driving sprocket 11, and the chain 3 can be taken out from the driving sprocket 11 and the reverse sprocket 21 after the chain 3 is loosened, and then realized dismantling chain 3 fast, also can promote the stability that the structure of reversing gear used.

As shown in fig. 4, both ends of the bushing 5 have chamfers 51, and the thickness of the bushing 5 is less than or equal to the thickness of the chain 3.

In this embodiment, the thickness of the sleeve 5 is slightly less than that of the chain 3, so that the sleeve 5 can be quickly inserted into the gap 4, and the inner side of the sleeve 5 is recessed to form an annular notch 52.

As shown in fig. 2 and 3, the driven shaft 2 protrudes to form a limit baffle edge 22, the driven shaft 2 is sleeved with a limit baffle 6, one end of the limit baffle 6 can abut against the limit baffle edge 22, and the reverse sprocket 21 and the shaft sleeve 5 abut against the other end of the limit baffle 6.

The end face of the shaft sleeve 5 and the end face of the limiting baffle 6 are both planes, and the end face of the shaft sleeve 5 is attached to the end face of the limiting baffle 6.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a reverse gear structure of motorcycle, includes driving shaft (1) and driven shaft (2), the cover is equipped with drive sprocket (11) on driving shaft (1), the cover is equipped with reverse gear sprocket (21) on driven shaft (2), be connected through chain (3) between drive sprocket (11) and reverse gear sprocket (21), its characterized in that, clearance (4) have between the inside wall of reverse gear sprocket (21) and the lateral wall of driven shaft (2), the cover is equipped with axle sleeve (5) on driven shaft (2), axle sleeve (5) embedding clearance (4) and setting are between reverse gear sprocket (21) and driven shaft (2).

2. The reverse gear structure of a motorcycle according to claim 1, wherein both ends of the boss (5) have chamfers (51).

3. Reverse gear structure for motorcycles according to claim 1, wherein said bushing (5) has a thickness less than or equal to the thickness of the chain (3).

4. The reverse gear structure of the motorcycle according to claim 1, 2 or 3, wherein the driven shaft (2) protrudes to form a limit baffle edge (22), the driven shaft (2) is sleeved with a limit baffle (6), one end of the limit baffle (6) can abut against the limit baffle edge (22), and the reverse gear sprocket (21) and the shaft sleeve (5) abut against the other end of the limit baffle (6).

5. The reverse gear structure of a motorcycle according to claim 1, 2 or 3, wherein the boss (5) is recessed inside to form a notch (52) having a ring shape.