JPH0211940A - Vibro-preventing rubber for mounting on compressor - Google Patents

Abstract

PURPOSE:To allow a vibro-preventive rubber to function both for preventing vibrations and absorbing variation in the belt tension by using No.1 surfaces of L-shaped No.1, No.2 plates as mounting surfaces, adhering No.1 rubber member between the No.1 surfaces, and adhering No.2 rubber member between the No.2 surfaces. CONSTITUTION:An L-shaped No.1 plate 1 consisting of No.1 surface 1a and No.2 surface 1b is mounted on a vibratory body by the No.1 surface 1a, while L-shaped No.2 plate 2 consisting alike of No.1 surface 2a, No.2 surface 2b is fixed to the basis by the No.1 surface 2a. No.1 rubber member 3 is interposed and adhered fast between the two No.1 surfaces 1a, 2a, while No.2 rubber member 4 between the No.2 surfaces 2a, 2b. Accordingly vibrations in different directions applied to the vibratory body are absorbed by No.1 rubber member 3, and variation in the belt tension due to displacement of the vibratory body absorbed by No.2 rubber member 4 which expands and shrinks in the direction of displacement.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vibration-isolating rubber body for mounting a compressor used in a vehicle air conditioner.

[Conventional technology]

A conventionally known anti-vibration rubber body used when installing a compressor used in a vehicle air conditioner is shown in Fig. 7 (a).
), as shown in (b), planar plates 1" and 2
A rubber elastic body 3 is joined between the holes to form a vibration-proof rubber body 10°, which is attached to the compressor by bolts 5 joined to the plate 1", while bolts 6 provided to the plate 2' 6, it is used by being attached to the body of a vehicle.

[Problem to be solved by the invention]

However, although the above-mentioned anti-vibration rubber body has the anti-vibration function of damping the vibrations applied to the compressor, it does not have the anti-vibration function to absorb the displacement difference caused by the difference in displacement between the compressor and the engine. . Therefore, in practical use, there is a problem in that tension is insufficient due to changes in belt tension, resulting in problems such as insufficient rotation of the compressor and, in extreme cases, the belt coming off. To avoid this, some systems connect the compressor and vehicle body with a spring or air cylinder to maintain belt tension, but this requires a rotational support mechanism, which increases the cost due to the complexity of the device. In addition to these problems, there is also the problem of vibration isolation due to vibration propagation from the rotating support.

The present invention has been made in view of the above problems, and includes:
It is an object of the present invention to provide a vibration isolating rubber body for mounting a compressor that has both a vibration isolating function and a displacement difference absorbing function, is easy to install, and is inexpensive.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a vibration-proof rubber body installed between a compressor and a vehicle body, etc. an L-shaped second plate having a first surface and a second surface; and an L-shaped second plate that is located between the first surface of the first plate and the first surface of the second plate and is joined to both. a second rubber elastic body located between a second surface of the first plate and a second surface of the second plate and joined to both; a first rubber elastic body of the first plate; The second plate has a first surface and a mounting portion provided on the first surface of the second plate.

[Effect]

According to the above means, the vertical, horizontal, and longitudinal vibrations applied to the compressor due to the vibrations of the compressor itself and the vibrations propagated from the engine are suppressed by the first surfaces of the first plate and the second plate of the vibration isolating rubber body. top and bottom, left and right joined to
It is absorbed by the first rubber elastic body that expands and contracts in the front-rear direction.

On the other hand, changes in belt tension caused by displacement between the compressor and the engine are
It is absorbed by the second rubber elastic body that is joined to each second surface of the plate and expands and contracts in the above-mentioned displacement direction.

〔Example〕

Next, embodiments of the present invention shown in the drawings will be described.

In FIGS. 1(a) and 1(b), 1 is an L-shaped first plate made of stainless steel or the like, consisting of a first surface 1a and a second surface lb, and 2 is a first surface 2a having a flange 2c. This is an L-shaped second plate made of stainless steel or the like having a second surface 2b. The first surface 1a of the first plate 1 and the first surface 1a of the second plate 2
The surface 2a is bonded with an adhesive through a first rubber elastic body such as natural rubber, while the second surface 1 of the first plate 1 and the second surface 2b of the second plate 2 are It is bonded with an adhesive with a second rubber elastic body such as natural rubber interposed therebetween. Note that mounting bolts 5 are welded to the first surface 1a of the first plate 1, and mounting bolt holes 6 are provided in the flange 2C of the first surface 2a of the second plate 2. The vibration isolating rubber body IO is thus formed.

As shown in FIG. 2(a), the vibration isolating rubber body 10 is connected between the compressor 20 and the vehicle body 30 via a bracket 11 attached to the compressor 20 and a bracket 1-12 attached to the vehicle body 30. mounted on. Incidentally, the vibration-proof rubber bodies 10 are attached at four locations at regular intervals between the brackets 11 and 12, as shown in FIG. 2(b).

In addition, to install the vibration isolating rubber body 10, as shown in FIG. is fixed, and on the other hand, a mounting pole (12) is connected to the bracket 12 in the mounting hole 6 provided in the second plate 2.
A is inserted and the screw tightening of the nant 8 is performed by fixing it.

In addition, in FIG. 2(a), 21 is a belt for rotational driving hung between the engine 40 and the compressor 20, and the tension of this belt 21 is adjusted to an appropriate value by a tension pulley 22. .

Next, the operation of an embodiment of the present invention will be explained with reference to FIG.

Due to the vibrations of the compressor 20 itself and the vibrations propagated from the engine 40, the compressor 20 is
Vibrations in the left-right direction Y and the front-back direction Z are added. By the way, between the bracket 11 attached to the compressor 20 and the bracket 12 attached to the vehicle body 30, four anti-vibration rubber bodies 10 are attached at regular intervals. Vibration in the x, y, and z directions is caused by
It is absorbed by the expansion and contraction of the rubber elastic body 3 in the compression direction and the second rubber elastic body 4 in the shear direction.

On the other hand, the displacement difference caused by the displacement between the compressor 20 and the engine 40 is
It is added as a tension change in the Y direction of 1. This tension change in the belt 21 in the Y direction is absorbed by expansion and contraction in the compression direction of the second rubber elastic body 4 of the elastic vibration isolating rubber body IO and in the shear direction of the first rubber elastic body 3. However, in order to absorb changes in the tension of the belt 21, the tension of the belt 21, which is applied between the compressor 20 and the engine 40, is adjusted to an appropriate value using the tension pulley 22 or other method. It is necessary that the

Next, in this embodiment, as shown in FIG. 1 as the vibration isolating rubber body 10, an L-shaped first plate 1 is arranged inside an L-shaped second plate 2 with a gap in the opposite direction, Rubber elastic bodies 3 and 4 were interposed between the opposing surfaces, and these were bonded together.As shown in FIG. 4, the L-shaped second plate 2 was bonded to the L-shaped first plate 1. The following may be formed in the same manner as above, or as shown in FIG. Place them in the same direction with a gap between them,
The following may be formed in the same manner as above (or, as shown in FIG. 6, the L-shaped second plate 2 is arranged in the same direction with a gap in the L-shaped first plate 1, The following may be formed in the same manner as above.

In addition, in this embodiment, the mounting bolts 5 are attached to the first plate 1.
are joined to form a mounting part, and a mounting hole 6 is provided in the second plate 2 to form a mounting part, but these mounting parts change depending on the mounting parts of the brackets 11 and 12 to be mounted. However, it is not particularly limited. Furthermore, by providing a mounting portion for the vibration-proof rubber body 10 on the compressor and the vehicle body, the bracket 11 and the bracket 1
2 can also be abolished.

In addition, in this embodiment, four vibration-proof rubber bodies 10 are arranged at regular intervals between the compressor and the vehicle body, but it is sufficient if there are three or more vibration-proof rubber bodies 10 required for stable mounting of the compressor. You can get the effect.

In this example, the rubber elastic bodies 3 and 4 are bonded to the plates 1 and 2 by bonding them with an adhesive, but they may be bonded by heat melting instead of bonding, or by bonding the plates 1 and 2. 1
Insert the bolt into the rubber elastic body 3゜4 between and 2,
They may be joined by screwing both ends of the bolt.

〔Effect of the invention〕

As explained above, the vibration isolating rubber body for mounting on a compressor of the present invention has both a vibration isolating function against vibrations and an absorbing function against changes in belt tension, and has a simple structure. There will be no insufficient rotation of the compressor or belt coming off due to insufficient rotation.

(b) Cost is low and installation is easy.

It has excellent practical effects such as

[Brief explanation of the drawing]

FIGS. 1(a) and 1(b) are a side view and a plan view showing one embodiment of the vibration isolating rubber body of the present invention, FIG. b) is B-B in Figure 2(a)
2(C) is a detailed view of part A in FIG. 2(a), FIG. 3 is a schematic diagram for explaining the same operation, and FIGS. 4 to 6 are other implementations. Side view showing an example, FIG. 7(a). (b) is a side view and a plan view of a conventional anti-vibration rubber body. 1...First plate, 2...Second plate 1a. 2a...first side, lb, 2b...second side, 3...
First rubber elastic body, 4... Second rubber elastic body, 5, 6
...Mounting part, 10...Vibration-proof rubber body.

Claims (1)

[Scope of Claims] An L-shaped first plate having a first surface and a second surface; an L-shaped second plate having a first surface and a second surface; a first surface of the first plate and the above-described first plate; 1st plate of 2nd plate
a first rubber elastic body located between the surfaces and joined to both; a second surface of the first plate and a second surface of the second plate;
a second rubber elastic body between the first surface of the first plate and the first surface of the second plate;
A vibration-isolating rubber body for mounting a compressor, characterized by having a mounting portion provided on a surface, and the following.