CN218845034U

CN218845034U - Vibration-damping noise-reducing engine timing chain wheel

Info

Publication number: CN218845034U
Application number: CN202222260133.5U
Authority: CN
Inventors: 黄新周; 张振平; 韦成甫; 宋路平
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-04-11
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a vibration-damping noise-reducing engine timing sprocket, which comprises a timing sprocket body, wherein the timing sprocket body is in a spoke type structure, the timing sprocket body is provided with a sprocket outer ring and a sprocket inner ring from outside to inside in sequence, vibration-damping rubber is arranged between the sprocket outer ring and the sprocket inner ring, and the sprocket outer ring and the sprocket inner ring are connected through the vulcanization gluing of the vibration-damping rubber; the chain wheel outer ring comprises teeth and chain wheel spokes, the teeth are fixedly arranged on the outer peripheral surface of the chain wheel spokes, lightening holes are formed in the chain wheel spokes at intervals, and annular grooves are further formed in the chain wheel spokes. The utility model discloses reach the purpose of shock attenuation, noise reduction.

Description

Vibration-damping noise-reducing engine timing chain wheel

Technical Field

The utility model relates to an engine technical field especially relates to an engine timing sprocket of making an uproar falls in damping.

Background

In the current engine design process, its timing sprocket part adopts monoblock metal directly to process sprocket and mounting hole basically, and the keyway etc. or whole adopt powder metallurgy to make, and the rigidity of timing sprocket like this is higher, but during operation, the meshing does not have the buffering between timing sprocket and timing chain, and when engine load changed in particular, the impact of complex is great, and timing sprocket weight is also great simultaneously.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides an engine timing sprocket of making an uproar falls in damping reaches the purpose of damping, falling the noise.

The utility model discloses take following technical scheme to realize above-mentioned purpose:

the engine timing chain wheel with the vibration and noise reduction function comprises a timing chain wheel body, wherein the timing chain wheel body is of a spoke type structure, a chain wheel outer ring and a chain wheel inner ring are sequentially arranged on the timing chain wheel body from outside to inside, vibration reduction rubber is arranged between the chain wheel outer ring and the chain wheel inner ring, and the chain wheel outer ring and the chain wheel inner ring are connected through the vibration reduction rubber in a vulcanization gluing mode; the chain wheel outer ring comprises teeth and chain wheel spokes, the teeth are fixedly arranged on the outer peripheral surface of the chain wheel spokes, lightening holes are formed in the chain wheel spokes at intervals, and annular grooves are formed in the chain wheel spokes.

Preferably, a region between the teeth and the mounting hole of the timing sprocket body is provided with vulcanized rubber.

Preferably, the vulcanized rubber is located in the area between the teeth and the sprocket spokes, the teeth and the sprocket spokes being connected by the vulcanized rubber.

Preferably, the vulcanized rubber is located in the area between the sprocket spokes and the timing sprocket body mounting holes.

Preferably, the lightening holes are uniformly distributed on the sprocket wheel spoke, and the lightening holes are oval.

The beneficial effects of the utility model are that:

the utility model discloses an engine timing sprocket of making an uproar falls in damping, reduce the sprocket spoke of rigidity, sprocket outer lane and sprocket inner circle pass through damping rubber vulcanized rubber and are in the same place, and the timing sprocket body is when rotational speed change or load change, and the impact between the timing sprocket can effectually be absorbed by damping rubber and sprocket spoke, can improve timing sprocket body moving impact noise, and rubber sizing material and hardness selection are suitable simultaneously, can not reduce timing sprocket body driven efficiency or bring other harm. The lightening holes and the annular groove are arranged, so that part of materials of the timing chain wheel body can be removed, and the aim of lightening is fulfilled.

Drawings

Fig. 1 is a schematic structural diagram of a vibration-damping and noise-reducing engine timing sprocket according to an embodiment of the present invention;

fig. 2 is a sectional view of the vibration and noise reduction engine timing sprocket provided by the embodiment of the present invention.

In the attached drawing, 1-sprocket outer ring, 2-sprocket inner ring, 3-damping rubber, 4-tooth, 5-sprocket spoke, 6-lightening hole and 7-annular groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1 to 2 and the embodiments.

Referring to fig. 1 to 2, the present embodiment provides a vibration-damping and noise-reducing engine timing sprocket, which includes a timing sprocket body, the timing sprocket body is in a spoke structure, the timing sprocket body is sequentially provided with a sprocket outer ring 1 and a sprocket inner ring 2 from outside to inside, a vibration-damping rubber 3 is arranged between the sprocket outer ring 1 and the sprocket inner ring 2, and the sprocket outer ring 1 and the sprocket inner ring 2 are vulcanized and glued through the vibration-damping rubber 3. Sprocket outer lane 1 includes tooth 4 and sprocket spoke 5, and tooth 4 sets firmly on 4 outer peripheral faces of sprocket spoke, and sprocket spoke 5 intervals are equipped with lightening hole 6, and sprocket spoke 5 still is equipped with annular groove 7.

The utility model discloses an engine timing sprocket of making an uproar falls in damping is when using, and sprocket outer lane 1 and sprocket inner circle 2 are in the same place through damping rubber vulcanized rubber, and timing sprocket body 1 is when rotational speed change or load change, and the impact between the timing sprocket can effectually be absorbed by damping rubber 3 and sprocket spoke 5, can improve 1 moving impact noise of timing sprocket body, and rubber sizing material and hardness selection are suitable simultaneously, can not reduce 1 driven efficiency of timing sprocket body or bring other harm. The lightening holes 6 and the annular groove 7 are arranged, so that part of materials of the timing chain wheel body 1 can be removed, and the aim of lightening is fulfilled.

In addition, the lightening hole 6/annular groove 7 structure can be realized by casting and forging, the production process is slightly changed compared with the integral timing chain wheel structure, but the influence on the production of the timing chain wheel is small, the blank production is realized by a die, the product consistency is high, and the production cost is better.

In the present embodiment, vulcanized rubber is provided in the region between the teeth 4 and the mounting hole of the timing sprocket body 1. Specifically, vulcanized rubber may be located in the area between the teeth 4 and the sprocket spokes 5, the teeth 4 and the sprocket spokes 5 being connected by vulcanized rubber. Vulcanized rubber may also be located in the area between sprocket spoke 5 and the mounting hole of timing sprocket body 1. Vulcanized rubber has elasticity, can slow down the impact of timing sprocket body 1 transmission in-process, and the spoke structure is compared simultaneously and is compared with the structure of whole metal, can ensure that timing sprocket body 1 reaches the equilibrium between rigidity, intensity and weight. The sprocket spoke 5 with reduced rigidity can absorb the impact between the timing sprockets, and further improve the impact noise of the operation of the timing sprocket body 1.

In the embodiment, the lightening holes 6 are uniformly distributed on the sprocket spoke 5, the lightening holes 6 are oval, and part of the material of the timing sprocket body 1 can be removed, so that the aim of lightening is fulfilled.

In the present embodiment, the damper rubber 3 may be different in rubber material, rubber layer width, thickness, and structure. The vulcanized rubber may also be of different rubber materials, rubber layer widths, thicknesses, and constructions.

Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.

Claims

1. The engine timing chain wheel with the vibration and noise reduction function comprises a timing chain wheel body and is characterized in that the timing chain wheel body is of a spoke type structure, a chain wheel outer ring and a chain wheel inner ring are sequentially arranged on the timing chain wheel body from outside to inside, vibration reduction rubber is arranged between the chain wheel outer ring and the chain wheel inner ring, and the chain wheel outer ring and the chain wheel inner ring are connected through the vibration reduction rubber in a vulcanization gluing mode; the chain wheel outer ring comprises teeth and chain wheel spokes, the teeth are fixedly arranged on the outer peripheral surface of the chain wheel spokes, lightening holes are formed in the chain wheel spokes at intervals, and annular grooves are further formed in the chain wheel spokes.

2. The vibration and noise reducing engine timing sprocket of claim 1, wherein a region between said teeth and said mounting holes of said timing sprocket body is provided with vulcanized rubber.

3. A vibration and noise reducing engine timing sprocket as set forth in claim 2, wherein said vulcanized rubber is located in the area between said teeth and said sprocket spokes, said teeth and said sprocket spokes being joined by said vulcanized rubber.

4. A vibration and noise reducing engine timing sprocket as set forth in claim 2, wherein said vulcanized rubber is located in the area between said sprocket spokes and said timing sprocket body mounting holes.

5. The vibration and noise reducing engine timing sprocket as set forth in claim 1, wherein said lightening holes are uniformly distributed on said sprocket spokes, and said lightening holes are oval in shape.