CN204552946U - A kind of denoising device of motor head - Google Patents

Abstract

The utility model discloses a noise reduction device at the front end of an engine, which comprises a gear chamber, a gasket and a tightening bolt, wherein the front end of the gear chamber is provided with a noise reduction device, and the noise reduction device is fixed by a plastic cover plate The sound-proof sponge, and the shape of the sound-proof sponge and the plastic cover match with the gear chamber cover. The beneficial effect of the utility model is: by installing a noise reduction device composed of a sound-proof sponge and a plastic cover plate at the front end of the gear chamber of the engine, the problem that the noise generated at the front end of the gear chamber is relatively large, resulting in relatively large noise of the entire engine; Moreover, the structure is simple, the installation and use are convenient, the manufacture is easy, and the production cost is low.

Description

Noise reduction device for front end of engine

technical field

The utility model relates to engine components, in particular to a noise reduction device for the front end of the engine.

Background technique

With the continuous improvement of automobile design level and production technology, the difference in the performance and safety performance of different brands of automobiles is getting smaller and smaller. In contrast, the comfort of a car becomes an important factor that distinguishes a good car from a bad one. Cars have NVH (noise, vibration, comfort) problems, especially for products already on the market. If the problem is not solved in time, it will affect the market share of the company's products. For this reason, it is necessary to optimize the noise reduction of each system of the entire engine, which requires a lot of work, a long development cycle, and extremely high cost. Since the noise generated by the gear transmission accounts for the main part of the whole engine noise, installing a noise reduction device at the front end of the gear chamber can effectively reduce the noise generated by the gear transmission to spread outward, thereby effectively reducing the overall noise of the engine.

Utility model content

The purpose of this utility model is to provide a noise reduction device at the front end of the engine to solve the problem in the prior art that the noise generated by the front end of the gear chamber is relatively large, which leads to the large noise of the entire engine, and the structure is simple and easy to install and use. The manufacture is easy and the production cost is low.

For this purpose, the utility model adopts the following technical solutions:

A noise reduction device for the front end of an engine, which includes a gear chamber, a gasket and a tightening bolt, wherein, the front end of the gear chamber is provided with a noise reduction device, and the noise reduction device is a sound-proof sponge fixed by a plastic cover plate.

In particular, the sound-insulating sponge and the plastic cover are arranged outside the gear chamber cover at the front end of the gear chamber, and the shapes of the sound-insulating sponge and the plastic cover are matched with the gear chamber cover.

In particular, the sound-insulating sponge is pressed against the gear chamber cover through the plastic cover plate, and is fixed through the gasket and tightening bolts.

In particular, the material of the sound-insulating sponge is polyurethane, and the material of the plastic cover plate is glass fiber reinforced nylon 66.

The beneficial effect of the utility model is that the noise reduction device at the front end of the engine solves the problem that the noise generated at the front end of the gear chamber is relatively large, resulting in The noise of the whole engine is relatively high; the structure is simple, the installation and use are convenient; the manufacture is easy and the production cost is low.

Description of drawings

Fig. 1 is a schematic diagram of the installation of the noise reduction device at the front end of the engine provided by Embodiment 1 of the utility model;

Fig. 2 is the structural representation of soundproof sponge;

Fig. 3 is a schematic diagram of the structure of the plastic cover.

In the picture:

1. Gear chamber; 2. Gear chamber cover; 3. Noise reduction device; 31. Soundproof sponge; 32. Plastic cover; 4. Gasket; 5. Tighten bolts.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

1 to 3, in this embodiment, a noise reduction device at the front end of the engine includes a gear chamber 1, a gasket 4 and a tightening bolt 5, wherein the gear chamber at the front end of the gear chamber 1 A noise reduction device 3 is provided on the outside of the cover 2, and the noise reduction device 3 includes a sound-proof sponge 31 and a plastic cover 32. The sound-proof sponge 31 is pressed against the gear chamber cover 2 through the plastic cover 32, and passed The gasket 4 and the tightening bolt 5 are fixed, and the shapes of the sound-proof sponge 31 and the plastic cover plate 32 are matched with the gear chamber cover 2 .

The material of the sound-insulating sponge 31 is polyurethane, and the material of the plastic cover 32 is glass fiber reinforced nylon 66.

During the use of the noise reduction device at the front end of the engine, firstly, the sound-proof sponge 31 is pressed against the gear chamber cover 2 through the plastic cover plate 32, and fixed by the gasket 4 and the tightening bolt 5; Then start the engine normally, because the noise generated by the gear chamber 1 accounts for the main part of the whole engine noise, the use of the noise reduction device 3 at the front end of the gear chamber 1 can effectively reduce the noise of the gear chamber 1 from spreading outward, thereby effectively reducing the engine noise. machine noise.

The above embodiments have only set forth the basic principles and characteristics of the present utility model, and the present utility model is not limited by the above examples. Under the premise of not departing from the spirit and scope of the present utility model, the present utility model also has various changes and changes. These changes All changes and modifications fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. a denoising device for motor head, it comprises gear chamber, pad and bolts on, and it is characterized in that, described gear chamber front end is provided with denoising device, and described denoising device is by the fixing sound-isolating sponge of plastic cover plate.

2. the denoising device of motor head according to claim 1, it is characterized in that, described sound-isolating sponge, plastic cover plate are arranged on outside the gear chamber cover of described gear chamber front end, and described sound-isolating sponge, plastic cover plate shape match with described gear chamber cover.

3. the denoising device of motor head according to claim 1, is characterized in that, described sound-isolating sponge is pressed on described gear chamber cover by described plastic cover plate, and by described pad, bolt on fixing.

4. the denoising device of motor head according to claim 1, is characterized in that, the material of described sound-isolating sponge is polyurethane, and the material of described plastic cover plate is Nylon-66 reinforced with glass fiber.