WO2022110630A1

WO2022110630A1 - Silent drive chain system for motorcycle rear drive transmission and motorcycle

Info

Publication number: WO2022110630A1
Application number: PCT/CN2021/089493
Authority: WO
Inventors: 付振明; 刘毅; 李存志; 王魁; 戴龙杰; 金玉谟
Original assignee: 青岛征和工业股份有限公司
Priority date: 2020-11-25
Filing date: 2021-04-25
Publication date: 2022-06-02
Also published as: CN112610664A

Abstract

A silent drive chain system for motorcycle rear drive transmission, comprising a small sprocket (1), a large sprocket (5), and a silent drive chain (2), wherein the silent drive chain is a toothed chain and comprises an outer chain plate (6), an inner chain plate (7), a guide plate (8), a pin shaft (10), a sleeve (11), and a shock-absorbing sealing ring (9); the sleeve is in interference fit with mounting holes of the inner chain plate and the guide plate, and forms an inner chain link together with the inner chain plate and the guide plate; the pin shaft penetrates through the sleeve and is in clearance fit with the sleeve; two ends of the pin shaft are in interference fit with a mounting hole of the outer chain plate, and form an outer chain link together with the outer chain plate; and the shock-absorbing sealing ring is disposed between the outer chain link and the inner chain link. The silent drive chain system for motorcycle rear drive transmission can stay stable when the motorcycle moves at a high speed, the noise is low, and the wear resistance is good.

Description

A silent drive chain system for motorcycle rear drive transmission and motorcycle

technical field

The invention relates to the technical field of motorcycle chain transmission, which covers motorcycles driven by engines, electric motors, etc., in particular to a motorcycle rear drive chain transmission system and a motorcycle.

Background technique

At present, the rear drive transmission mode of motorcycles mainly adopts chain transmission, which solves the driving problem of motorcycles through the chain transmission between the output shaft of the engine and the rear wheel shaft.

In the design of the prior art, the chain structure used in the rear drive transmission of the motorcycle is a roller chain. In addition to considering the characteristics of the chain transmission structure, which is simple, light, low cost, and easy to maintain, another important reason is that the drive wheel is installed. The motorcycle rear fork will vibrate during vigorous movement, and the chain can be given a certain margin when adjusting the tightness, so that it can not only adapt to the vibration of the rear fork, but also maintain the transmission between the engine and the rear wheel.

However, with the continuous development of the industry, the existing motorcycle rear drive chain transmission system has increasingly highlighted its technical limitations, which are embodied in:

With the increasing demand for large-displacement cruise, touring, off-road, competition and other motorcycles and high-end high-speed electric motorcycles, the traditional chain drive system is difficult to meet the personalized low noise requirements of these motorcycles, especially for high-end electric motorcycles and high-speed electric motorcycles. High-end and large-displacement motorcycles such as cruising, touring, and street running are increasingly demanding to reduce the noise of the rear drive chain. Even though the patent "202020979030.2 a noise reduction sprocket for transmission" adopts the design of rubber coating on the sprocket, it can buffer the collision between the roller and the gear teeth when the chain is driven at high speed, and reduce the transmission noise to a certain extent. With the decline of the rubber buffering ability, its noise reduction ability is gradually decreasing, and it has not effectively solved the personalized low noise needs of high-end motorcycles. In addition, when the chain is installed too much, or when the chain wears and stretches too much after use, it will also increase the transmission noise of the chain drive system, and also cause the speedometer sensor to fail and aggravate wear and tear. Dangers of chain sprockets, chain detachment from sprockets, etc.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the prior art, the present invention provides a silent drive chain system for motorcycle rear drive transmission. Due to the technical limitations, the motorcycle can still maintain the stability and low noise of the chain drive system when the motorcycle is moving at high speed and vigorously, which can meet the personalized needs of low noise and high wear resistance of high-end motorcycles, and can effectively avoid the occurrence of dangerous accidents.

For achieving the above object, the technical scheme of the present invention is:

A silent drive chain system for motorcycle rear drive transmission, comprising a small chain wheel, a large chain wheel, and a silent drive chain connected between the small chain wheel and the large chain wheel, the small chain wheel and the motor of the motorcycle Or the output shaft of the engine is detachably and fixedly connected, the large sprocket is detachably and fixedly connected to the rear axle of the motorcycle, and the silent drive chain is a toothed chain, including: an outer chain plate, an inner chain plate, a guide plate, A pin shaft, a sleeve and a shock-absorbing sealing ring; the sleeve has an interference fit with the mounting holes of the inner chain plate and the guide plate, and forms an inner chain link together with the inner chain plate and the guide plate, and the pin shaft penetrates through the sleeve The two ends of the pin shaft are in interference fit with the mounting holes of the outer chain plate, and together with the outer chain plate form an outer chain link, and the outer chain link and the inner chain link There is a shock-absorbing sealing ring in between.

Preferably, the guide plate is located in the middle of the outer surface of the sleeve, the inner chain plate is symmetrically installed on both sides of the guide plate, the shock-absorbing sealing ring is sleeved on the end of the sleeve, and the shock-absorbing sealing ring The inner and outer end faces are respectively abutted against the outer surface of the inner chain plate and the inner surface of the outer chain plate.

Preferably, the meshing of the mute drive chain with the small sprocket and the large sprocket is an internal and external composite meshing mechanism or the meshing between the mute drive chain and the large sprocket adopts an internal meshing mechanism; the number of teeth of the small sprocket and the large sprocket is 13 to 72 teeth.

Preferably, it also includes a chain support, the chain support includes an inverted U-shaped bracket, and a support piece connected between the openings at the bottom end of the bracket, the top of the bracket and the rear fork of the motorcycle are close to the large chain wheel. The outer surface of the side can be detachably and fixedly connected, and the silent drive chain passes through the bracket and is used in cooperation with the support piece, and the support piece is made of light and wear-resistant materials.

Preferably, the tooth profile of the small sprocket and the large sprocket can adopt involute tooth shape or linear tooth shape; the large sprocket and the small sprocket adopt the pressure angle of the involute tooth shape. is 30° to 40°; the toothed half angle of the inner chain plate and the outer chain plate of the silent drive chain is 30° to 40°.

Preferably, the toothed half angle of the inner link plate and the outer link plate of the silent drive chain is 35°.

Preferably, the tooth profiles of the large sprocket and the small sprocket are involute tooth profiles, and the pressure angle is 35°.

Preferably, the cross-sectional shape of the shock-absorbing sealing ring is O-shape or X-shape or +-shape or M-shape or Z-shape.

Preferably, the supporting member is a plate-like structure or a roller body structure.

Preferably, the support member is made of PA46 or PA66 material.

Preferably, a motorcycle is provided with the silent drive chain system for rear drive transmission of the motorcycle.

The silent drive chain system and the motorcycle for the rear drive transmission of the motorcycle of the present invention have the following beneficial effects:

(1) The present invention realizes the internal meshing mechanism or the internal and external composite meshing mechanism of the silent drive chain (toothed chain) and the sprocket through the innovative structural design of the silent drive chain, which reduces the need for the previous motorcycle roller chain transmission process. The polygon effect makes the chain drive more stable. It effectively meets the needs of high-end motorcycles, especially high-speed electric motorcycle rear drive chain drive with low noise and high wear resistance.

(2) The present invention overcomes the technical limitations of the traditional motorcycle drive chain transmission, adopts a sleeve toothed chain structure design with a shock-absorbing sealing ring, and boldly uses the guiding mode of the inner guide toothed chain transmission to make the chain transmission system more efficient. It is stable and reliable, greatly improves its chain transmission efficiency and durability, and reduces chain transmission noise.

(3) The present invention reduces the transmission noise of the chain transmission system by adding a chain support structure design to the rear drive chain transmission system of the motorcycle, and eliminates the dangerous risks such as the failure of the speedometer sensor and the disengagement of the chain from the sprocket caused by the chain being too long. At the same time, it can improve the wear resistance, fatigue resistance and smooth performance of the chain drive, and better realize the silent transmission.

Description of drawings

Figure 1: A schematic front view of a silent drive chain system for a motorcycle rear drive transmission of the present invention;

Figure 2: A schematic structural diagram of a silent drive chain system for a motorcycle rear drive transmission of the present invention on a motorcycle;

Figure 3: Front view and top view structural schematic diagram of the mute drive chain of the present invention;

Figure 4: A schematic top view structure diagram of the matching relationship of each component of the silent drive chain of the present invention;

Figure 5: A schematic view of the top view structure of the outer link of the silent drive chain of the present invention;

Figure 6: A schematic view of the top view structure of the inner link of the silent drive chain of the present invention;

Figure 7: Front view and top view structural schematic diagram of the small sprocket of the silent drive chain system of the present invention;

Figure 8: Front view and right side structural schematic diagram of the large sprocket of the silent drive chain system of the present invention;

Figure 9: a schematic view of the front view structure of the chain support of the silent drive chain system of the present invention;

Figure 10: Schematic diagram of the relationship between the noise of the silent drive chain drive of the present invention, the ordinary roller chain drive and the roller chain drive with a rubber sprocket and the rotational speed of the small sprocket.

1: Small chain wheel, 2: Silent drive chain, 3: Motorcycle rear fork, 4: Chain support, 5: Large chain wheel, 6: Outer chain plate, 7: Inner chain plate, 8: Guide plate, 9: Shock absorption Sealing ring, 10: pin, 11: sleeve, 12: bracket, 13: bearing.

Detailed ways

The following describes the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention, and is not intended to limit the protection scope of the present invention. Anything within the spirit and principle of the present invention Any modifications, equivalent replacements and improvements made within the scope of the present invention shall be included within the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, as well as a specific orientation configuration and operation, and therefore should not be construed as a limitation of the present invention.

Embodiment 1,

A silent drive chain system for motorcycle rear drive transmission, as shown in Figs. Chain 2, the small chain wheel 1 is detachably and fixedly connected to the output shaft of the motor or engine of the motorcycle, the large chain wheel 5 is detachably and fixedly connected to the rear axle of the motorcycle, and the silent drive chain 2 It is a toothed chain, including: outer chain plate 6, inner chain plate 7, guide plate 8, pin shaft 10, sleeve 11 and shock-absorbing sealing ring 9; the installation of the sleeve 11 with the inner chain plate 7 and guide plate 8 The holes are interference fit, and together with the inner chain plate 7 and the guide plate 8 form an inner chain link. The pin shaft 10 penetrates through the sleeve 11 and is clearance fit with the sleeve 11. The two ends of the pin shaft 11 It is interference fit with the mounting hole of the outer chain plate 6, and together with the outer chain plate 6 constitutes an outer chain link, and a shock-absorbing sealing ring 9 is arranged between the outer chain link and the inner chain link.

The traditional motorcycle rear drive chain is a roller chain. Although its structure is simple, light, easy to maintain, and convenient to adjust the tightness margin, it can meet the needs of traditional motorcycles. However, as described in the background of the present invention, with the large With the rapid development of motorcycles and high-end high-speed electric motorcycles such as displacement cruise, touring, off-road, and competition, the use of traditional roller chains is becoming more and more limited, especially in terms of quietness, which cannot meet the development needs. Based on the above reasons, the present invention provides a mute drive chain 2 with a toothed chain structure, which can significantly improve its mute effect while fully satisfying the load strength of the motorcycle.

Embodiment 2,

On the basis of Embodiment 1, this embodiment has made further improvements, specifically:

As shown in Figures 1-6, the guide plate 8 is located in the middle of the outer surface of the sleeve 11, the inner chain plate 7 is symmetrically installed on both sides of the guide plate 8, and the shock-absorbing sealing ring 9 is sleeved on the sleeve The end of the cylinder 11 , and the inner and outer end surfaces of the shock-absorbing sealing ring 9 are respectively abutted against the outer surface of the adjacent inner link plate 7 and the inner surface of the outer link plate 6 .

Embodiment 3,

On the basis of embodiment 2, this embodiment has made further improvements, specifically:

The meshing of the mute drive chain 2 with the small sprocket 1 and the large sprocket 5 is an internal and external compound meshing mechanism or the meshing of the mute drive chain 2 and the large sprocket 5 adopts an internal meshing mechanism.

Embodiment 4,

On the basis of Embodiment 3, this embodiment has made further improvements, specifically:

As shown in Figures 1, 2, and 9, it also includes a chain support 4. The chain support 4 includes an inverted U-shaped bracket 12 and a support member 13 connected between the openings at the bottom ends of the brackets 12. The brackets The top end of 12 is detachably and fixedly connected to the outer surface of the motorcycle rear fork 3 on the side close to the large sprocket 5. The silent drive chain 2 passes through the bracket 12 and is used in cooperation with the supporting member 13. The supporting Pieces are made of lightweight wear-resistant material.

Embodiment 5,

On the basis of Embodiment 4, this embodiment has made further improvements, specifically:

As shown in Figures 7 and 8, the number of teeth of the small sprocket 1 is 16 teeth or 15 teeth, preferably 16 teeth in this embodiment, the number of teeth of the large sprocket 5 is 51 teeth, and the small sprocket 5 has 51 teeth. The tooth shapes of 1 and the large sprocket 5 are involute tooth shapes; the large and small sprockets adopt involute tooth shapes, and the tooth pressure angle is 30°; the inner diameter of the silent drive chain 2 The half angle of the tooth shape of the link plate 7 and the outer link plate 6 is 30°.

Embodiment 6,

The large sprocket and the small sprocket adopt an involute tooth shape with a tooth pressure angle of 40°; the toothed half angle of the inner link plate 7 and the outer link plate 6 of the silent drive chain 2 is 40°.

Embodiment 7,

The tooth profiles of the small sprocket 1 and the large sprocket 5 are both straight tooth profiles.

Embodiment 8,

As shown in FIGS. 7 and 8 , the half angle of the tooth shape of the inner link plate 7 and the outer link plate 6 of the silent drive chain 2 is 35°.

Embodiment 9,

As shown in FIGS. 7 and 8 , the tooth profiles of the large sprocket 5 and the small sprocket 1 are involute tooth profiles, and the pressure angle is 35°.

Embodiment 10,

On the basis of the above embodiment, the present embodiment has made further improvements, specifically:

The cross-sectional shape of the shock-absorbing sealing ring is "+" shape.

Embodiment 11,

On the basis of Embodiment 10, this embodiment has made further improvements, specifically:

As shown in FIG. 9 , the support member 13 is a plate-like structure.

Embodiment 12,

The supporting member 13 is a roller body structure (not shown in the figure).

Embodiment 13,

On the basis of Embodiments 11 and 12, further improvements have been made in this embodiment, specifically:

The support member 13 is made of PA66 material.

Example 14:

On the basis of the above embodiments, this embodiment also discloses:

A motorcycle is provided with the silent drive chain system for rear drive transmission of the motorcycle.

Experimental example:

Based on the above embodiments, the present invention has been verified by experiments, and the data is shown in Figure 10. The noise test results of the noise test of the silent drive chain drive and the noise test of the ordinary roller chain drive and the roller chain drive with a rubber sprocket are as follows: ① The noise of the silent drive chain transmission is 2-7 decibels lower than that of the ordinary roller chain drive; ② The noise of the silent drive chain transmission is 1 to 6 decibels lower than that of the roller chain drive with a rubber sprocket; ③ The silent drive chain The noise change of the transmission is relatively stable than that of the ordinary roller chain transmission and the roller chain transmission with the rubber sprocket.

The working principle of the present invention:

1. The present invention greatly reduces the transmission noise of the motorcycle transmission chain through the guiding mode of the inner guide toothed chain transmission;

2. On the basis of the above, the present invention is also provided with a damping sealing ring 9 between the inner chain link and the outer chain link. The wear of the cylinder 11 can also prevent the dry friction between the pin shaft 10 and the sleeve 11 caused by the overflow of lubricating oil inside the chain, and can also eliminate the collision friction between the inner chain plate 7 and the outer chain plate 6, which can improve the wear resistance of the chain. The performance prolongs the service life, and can further reduce the noise of the chain drive;

3. The silent drive chain 2 of the present invention takes the form of a toothed chain, which breaks through the traditional roller chain transmission mode. Under the condition of fully satisfying the large load of motorcycles, it realizes internal meshing or internal and external composite meshing transmission, which can keep the motorcycle. The stable transmission of the rear drive can further reduce the transmission noise on the basis of the above;

4. The present invention is also provided with a chain support 4. The chain support 4 can eliminate the dangerous risks such as the failure of the speedometer sensor and the chain separation from the sprocket caused by the chain being too long. Silent chain drive.

Claims

A silent drive chain system for motorcycle rear drive transmission, which is characterized by comprising: a small chain wheel, a large chain wheel, and a silent drive chain connected between the small chain wheel and the large chain wheel, and the small chain wheel is connected to the large chain wheel. The output shaft of the motor or engine of the motorcycle is detachably and fixedly connected, the large chain wheel is detachably and fixedly connected to the rear wheel shaft of the motorcycle, and the silent drive chain is a toothed chain, including: an outer chain plate, an inner chain plate, guide plate, pin shaft, sleeve and shock-absorbing sealing ring; the sleeve is in interference fit with the mounting holes of the inner chain plate and the guide plate, and together with the inner chain plate and the guide plate form an inner chain link, the pin The shaft penetrates through the sleeve and is in clearance fit with the sleeve. The two ends of the pin shaft are in interference fit with the mounting holes of the outer chain plate, and together with the outer chain plate form an outer chain link. The outer chain link A shock-absorbing sealing ring is arranged between the inner chain link.
The silent drive chain system for motorcycle rear drive transmission according to claim 1, wherein the guide plate is located in the middle of the outer surface of the sleeve, the inner chain plate is symmetrically installed on both sides of the guide plate, The shock-absorbing sealing ring is sleeved on the end of the sleeve, and the inner and outer end surfaces of the shock-absorbing sealing ring are respectively abutted against the outer surface of the inner chain plate and the inner surface of the outer chain plate.
The silent drive chain system for motorcycle rear drive transmission according to claim 2, wherein the meshing of the silent drive chain with the small sprocket and the large sprocket is an internal and external compound meshing mechanism or the silent drive chain and the large sprocket are meshed with each other. The sprocket meshing adopts an internal meshing mechanism; the number of teeth of the small sprocket and the large sprocket is 13-72 teeth.
A silent drive chain system for motorcycle rear drive transmission according to any one of claims 1 to 3, characterized in that it further comprises a chain support, wherein the chain support comprises an inverted U-shaped bracket and a bracket connected to the bottom of the bracket. A support piece between the end openings, the top end of the bracket is detachably and fixedly connected to the outer surface of the motorcycle rear fork on the side close to the large chain wheel, the silent drive chain passes through the bracket and is matched with the support piece In use, the bearing member is made of light-weight wear-resistant material.
A silent drive chain system for motorcycle rear drive transmission as claimed in claim 3, characterized in that: the tooth profiles of the small sprocket and the large sprocket can adopt involute tooth profile or linear tooth profile; The large sprocket and the small sprocket adopt the involute tooth shape and the tooth pressure angle is 30°～40°; the tooth shape half angle of the inner chain plate and the outer chain plate of the silent drive chain is 30°～40° °;.
The silent drive chain system for motorcycle rear drive transmission according to claim 5, wherein the toothed half angle of the inner chain plate and the outer chain plate of the silent drive chain is 35°.
The silent drive chain system for motorcycle rear drive transmission according to claim 5, wherein the tooth shape of the large sprocket and the small sprocket is an involute tooth shape, and the pressure angle is 35° .
The silent drive chain system for motorcycle rear drive transmission according to any one of claims 1 to 3 and 5 to 7, wherein the cross-sectional shape of the shock-absorbing sealing ring is O-shape or X-shape or + shape or M shape or Z shape.
A silent drive chain system for motorcycle rear drive transmission according to claim 4, characterized in that: the supporting member is a plate-like structure or a roller body structure; the supporting member is made of PA46 or PA66 material production.
A motorcycle is characterized in that: the motorcycle is provided with a silent drive chain system for rear drive transmission of the motorcycle according to any one of claims 1 to 3, 5 to 7, and 9.