KR0179479B1 - Dustproof device for automobile engine - Google Patents

Abstract

The present invention relates to an anti-vibration device for an automotive engine that absorbs and blocks vibrations generated from an engine, and includes an anti-vibration member having one end fixed to the vehicle body and the other end fixed to the engine. A plurality of first, second and third rubber 14, 15, 16 is stacked, the upper, lower portion between the first, second and third rubber 14, 15, 16 As the partition plates 18a and 18b are fixedly installed, vibrations generated from an engine or the like are respectively absorbed and attenuated by a plurality of rubbers, and at the same time, generation of noise due to a high vibration frequency can be minimized.

Description

Dustproof device for automobile engine

1 is an exploded perspective view showing an engine mounting structure of a conventional vehicle.

Figure 2 is a longitudinal sectional view showing a dustproof member applied to a conventional vehicle.

Figure 3 is a longitudinal sectional view showing a dustproof device of a vehicle engine according to the present invention.

4 is a graph showing the amount of displacement according to the load of the vehicle and the conventional vehicle to which the present invention is applied.

* Explanation of symbols for main parts of the drawings

10: dustproof member 14: first rubber

15: second rubber 15a: hole

16: third rubber 17: cover body

18a: upper divider 18b: lower divider

19a, 19b: Ball 21,22: Stopper

[Industrial use]

The present invention relates to an anti-vibration device of an automotive engine for absorbing and blocking vibrations transmitted from a vehicle body and an engine, and more particularly, reduces the amount of displacement during heavy load action in the vehicle body and the engine, thereby preventing the generation of noise due to vibration. The present invention relates to a dustproof device for an automotive engine that can be minimized.

[Prior art]

As shown in FIG. 1, the mounting structure of the conventional engine is fastened and fixed to the mounting member 1, which is fastened and fixed to the vehicle body, and the upper end of the dustproof member 2 is the engine E. It is configured to be fastened to the mounting bracket (3) fastened to.

The dustproof member 2 includes an upper plate 5 on which a bolt 4a fastened to the mounting bracket 3 protrudes, and a lower plate protruded from a bolt 4b fastened to the mounting member 1. 6) and a rubber 7 which is filled between the upper plate 5 and the lower plate 6 to cushion the elastic force.

Therefore, the vibration transmitted from the engine E is buffered by the rubber 7 and blocked at the same time, thereby improving the riding comfort.

However, in the conventional technique configured as described above, the spring constant of the rubber member is increased, so that the vibration frequency of the engine is increased to 2000 to 5000 rpm, thereby increasing the vibration frequency, thereby generating severe noise and reducing the shock absorbing effect of the heavy load. There are many problems inherent in the poem, such as difficult to apply.

[Summary of invention]

The present invention has been invented to solve the problems of the prior art as described above, the object of the present invention is to reduce the displacement of the dustproof member to improve the riding comfort, especially during the action of heavy loads and to suppress the occurrence of vibration It is to provide an anti-vibration device for an automobile engine that can minimize the occurrence of noise.

In the vehicle anti-vibration device according to the present invention made to achieve the above object is a vehicle comprising an anti-vibration member having one end fixed to the vehicle body and the other end is fixed to the engine, the dustproof member is a plurality of first, The second and third rubbers are stacked, and the upper and lower partition plates are fixedly installed between the first, second and third rubbers.

Therefore, the vibration generated in the engine or the like is absorbed and attenuated by the plurality of rubbers, respectively, and at the same time, the noise at a high vibration frequency, in particular, the engine rotational speed of 2000 to 5000 rpm is further reduced.

EXAMPLE

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to FIGS. 3 and 4 of the accompanying drawings.

In the drawings, reference numeral 10 denotes a dustproof member, and the dustproof member 10 includes upper and lower plates 12 and 13 having bolts 11a and 11b protruding upward and downward, respectively, and the upper and lower plates. Stacked between (12) and (13), and fixed to the first, second and third rubber (14) (15) (16) and the upper plate (12) for absorbing and attenuating vibration while being displaced according to the vibration. And a cover body 17 installed to prevent foreign substances or heat from being introduced into the first, second and third rubbers 14, 15 and 16 from the outside.

The first, second and third rubbers 14, 15 and 16 are divided by upper and lower partition plates 18a and 18b, respectively, and the upper and lower partition plates 18a and 18b. On the outer side of the plurality of balls (19a) (19b) is attached by the adhesive 20 to attenuate it by weight when the vibration frequency is a high frequency.

The first, third and third rubbers 14, 15 and 16 are formed of a soft material and the second rubber 15 is formed so that the elastic modulus is different from each other. May be formed of a hard material, or the first and third rubbers 14 and 16 may be formed of a hard material, and the second rubber 15 may be formed of a rubber of a soft material.

In addition, a plurality of holes 15a are formed in the second rubber 15.

On the other hand, the upper and lower partition plates (18a, 18b) are provided through the stopper 21, 22 to control the amount of displacement in the up and down direction during vibration of the vibration isolator (10).

When the vibration is generated in accordance with the operation of the engine of the vibration isolator of the vehicle engine according to the present invention configured as described above, the vibration is attenuated and absorbed by the dustproof member (10).

That is, the vibration transmitted through the upper plate 12 and the first rubber 14 is attenuated while being transmitted to the lower plate 16 through the second and third rubbers 15 and 16 again. The third rubber 14, 15, 16 exhibits three spring characteristics.

One of the spring characteristics acting in the dustproof member 10 is a ride comfort by reducing the displacement amount by the first to third rubber 14, 15, 16 formed of soft and hard material, respectively, when the large load is applied. In addition, one of the displacements is caused by a plurality of holes 15a formed in the first to third rubbers 14, 15 and 16 and the second rubber 15 under the action of a small load. It is reduced to improve ride comfort.

In addition, one of the spring characteristics acting in the dustproof member 10 is the inner side of the upper and lower partition plates 18a and 18b at the large displacement of the first to third rubbers 14, 15 and 16. As the stoppers 21 and 22 installed in the standing state stand in contact with each other, vibration is suppressed and at the same time, a plurality of balls 19a and 19b attached to the outer circumferential surface of the upper and lower partition plates 18a and 18b are provided. In particular, when the vibration frequency is high by weight, it is lowered to further minimize the occurrence of noise.

Therefore, as shown in FIG. 4, the present invention shows that the displacement amount according to the load is much reduced than before, and in particular, it can be seen that the displacement amount of the dustproof member is further reduced during the heavy load action.

In addition, the cover body 17 coupled to the outside prevents deterioration of the first to third rubbers 14, 15, and 16 by blocking foreign substances or heat from entering the inside.

Therefore, according to the engine vibration isolator of the automobile according to the present invention, the vibration generated in the engine and the like is absorbed and attenuated by a plurality of rubber, respectively, and at the same time has a variety of excellent effects, such as the generation of noise due to high vibration frequency is minimized.

As described above, the present invention has been illustrated and described with respect to one embodiment, but is not limited thereto, and one of ordinary skill in the art to which the present invention belongs should fall within the technical idea of the present invention described in the claims below. If so, various changes could be made.

Claims (3)

In an automobile including an anti-vibration member having one end fixed to a vehicle body and the other end fixed to an engine, upper and lower partition plates 18a and 18b are fixed to the dustproof member 10, and the upper and lower parts are fixed. Between the partition plates 18a and 18b, a second rubber 15, which is a hard material rubber having a plurality of holes 15a, is provided, and the upper and lower partition plates 18a and 18b are soft. Dustproofing device for an automobile engine, characterized in that the first rubber (14) and the second rubber (16) that is made of rubber. The dustproof apparatus of claim 1, wherein the first and third rubbers (14) (16) are made of hard material, and the second rubber (15) is made of soft rubber. The stopper (21) (22) for controlling the lifting amount of the first rubber, the second rubber and the third rubber is installed on the upper and lower partition plates (18a) and (18b). Dustproof device for automobile engines.