JP2003074630A - Vibration controlling support device and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration controlling support device capable of segregatedly recovering and recycling components serving as resources after disposal. SOLUTION: The vibration controlling support device is provided with a first fitting member 1 connected to one of a supporting body and a supported body, a second fitting member 2 disposed in the outer circumferential side of the first fitting member 1 and connected to the other out of the supporting body and the supported body, and an elastic leg 3 joined with the first fitting member 1 and composed of a rubber elastic material extending to the second fitting member 2. The tip part of the leg body part 32 of the elastic leg 3 press- fitted in a press-fit recess part 22a formed in the second fitting member 2. The tip part of the leg body part 32 of the elastic leg 3 has an elastic engagement member 4 embedded therein, formed of a rubber elastic material harder than the elastic leg 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration support device which is used, for example, as an engine mount of an automobile and which insulates and damps vibrations between a support and a support.

[0002]

2. Description of the Related Art Generally, an engine mounted on an automobile is supported by a frame of a vehicle through an anti-vibration supporting device (mount) having anti-vibration performance according to its vibration characteristics. As a kind of supporting device, for example, one disclosed in Japanese Patent Laid-Open No. 11-336817 is known. That is, this anti-vibration support device absorbs and attenuates the input vibration by viscoelasticity of the rubber elastic body,
A tubular first mounting member that is connected to one of the engine side and the vehicle body side via a bracket, and a second mounting that is arranged on the outer periphery of the first mounting member and that is connected to the other of the engine side and the vehicle body side. It has a structure in which a rubber elastic body is integrally bonded to the member.

In this type of anti-vibration support device, the rubber elastic body is repeatedly deformed by the relative displacement of the first mounting member and the second mounting member due to the input of engine vibration from the engine, for example, so that the transmission vibration is effective. In addition to being insulated, the friction energy inside the rubber elastic body consumes vibration energy as heat and attenuates it.

[0004]

However, in the conventional anti-vibration support device, the rubber elastic body and the second mounting member are firmly adhered and integrated, and therefore, when they are discarded after a long period of use, the resources are not used. As a result, the second mounting member made of recyclable fiber-reinforced synthetic resin cannot be separated from the rubber elastic body that is difficult to recycle, and therefore it is difficult to separate and recycle.

Further, when manufacturing this type of vibration-damping support device, the first and second mounting members for vulcanizing and molding the elastic body are inserted into the mold to form the elastic body at the same time as the molding. Although it is vulcanized and adhered to the second mounting member, it is necessary to use a large mold in order to deal with the second mounting member having a different shape, and the cost of the mold is high.

The present invention has been made in view of the above problems, and its technical problem is to provide an anti-vibration support device capable of separately collecting and recycling parts which become resources after disposal. To provide.

[0007]

The conventional technical problems can be effectively solved by the present invention. That is, the vibration-damping support device according to the invention of claim 1 includes a first mounting member that is connected to one of a support and a supported body, and the support and the supporting body that are disposed on the outer peripheral side of the first mounting member. A second mounting member connected to the other of the supports, and an elastic leg made of a rubber-like elastic material extending from the first mounting member toward the second mounting member are provided, and a tip portion of the elastic leg is the It is press-fitted into a press-fitting recess formed in the second mounting member. Therefore, by applying a required load to the elastic legs in the pull-out direction from the second mounting member, the elastic legs and the second mounting member can be separated.

According to a second aspect of the present invention, in the vibration isolating support device according to the first aspect, the elastic leg made of a rubber-like elastic material having a hardness higher than that of the elastic leg is provided at the tip of the elastic leg. The engaging member is embedded and integrated. Therefore, the elastic leg is deformed by the input of the vibration and absorbs the vibration, but the deformation amount of the elastic engaging member is small, so that the elastic leg does not accidentally come off from the second mounting member due to the input vibration or the like.

[0009]

1 is a front view showing an anti-vibration support device according to a preferred embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA 'in FIG. 3 is
FIG. 2 is a cross-sectional view taken along the line BB ′ in FIG. 1.
In the following description, the X direction means the direction orthogonal to the cross section of FIG. 1, the Y direction means the left and right direction in FIG. 1, and the Z direction means the up and down direction in FIGS. 1 and 2. Say.

The vibration-damping support device of this embodiment is used as an engine mount for automobiles and is shown in FIGS.
As shown in FIG. 1, a first mounting member 1 connected to the engine side which is a supported body, and a second mounting member arranged on the outer peripheral side of the first mounting member 1 and connected to the vehicle body frame side which is the supporting body. The member 2 and the elastic leg 3 extending from the first mounting member 1 toward the second mounting member 2 are provided. The first mounting member 1 is manufactured by cutting a metal pipe such as a steel pipe, and its axis extends in the X direction. The elastic leg 3 is formed of a rubber-like elastic material such as natural rubber, and is integrally vulcanized and bonded to the first mounting member 1 by insert molding.

The second mounting member 2 is made of a high-rigidity material such as metal or fiber reinforced plastic, and has a substantially U-shaped arch portion 21 which is convex upward and extends downward from both left and right sides thereof. Side plate portions 22 and 22, and mounting seats 23 and 23 extending from the lower ends of the side plate portions 22 and 22 to the left and right
And a bottom plate portion 24 extending so as to connect the mounting seats 23, 23, and the arch portion 21 to the side plate portions 22, 22.
Further, reinforcing ribs 25 are formed on the outer side surfaces of the mounting seats 23, 23 along both edges in the X direction. Further, the mounting seats 23, 23 are provided with mounting holes 23a for inserting mounting bolts (not shown).

The elastic leg 3 has an inverted V-shaped projection in the X direction, and has a base 31 to which the first mounting member 1 is vulcanized and adhered in an embedded state, and diagonally left and right below the base 31. It has leg body portions 32, 32 extending to, an upper stopper 33 protruding upward from the base portion 31, and a lower stopper 34 protruding downward from the base portion 31. Also, the leg body 3
2, 32 and the upper stopper 33 and the arch portion 21 of the second mounting member 2 between the elastic legs 3 (leg body portions 32, 3).
In order to allow the free displacement of 2), a space S _U penetrating in the X direction is formed, and between the leg body portions 32, 32 and the lower stopper 34, and the bottom plate portion 24 of the second mounting member 2. Has a space S _L penetrating in the X direction.

A pair of upper and lower retaining projections 32a are respectively provided at the tips of the leg bodies 32, 32 of the elastic leg 3.
The retaining projections 32a are press-fitted into the press-fitting recesses 22a formed in the corresponding shapes on the inner side surfaces of the side plate portions 22, 22 of the second mounting member 2. In addition, as shown in FIG. 3, the leg body 32,
An uneven surface 32b is formed on the tip surface of each of the 32, and the uneven surface 32b is engaged with the uneven surface 22b formed in a shape corresponding to the bottom surface of the press-fitting recess 22a in the second mounting member 2. There is.

Inside the distal end portions of the leg main body portions 32 which are press-fitted into the press-fitting recesses 22a of the side plate portions 22 of the second mounting member 2, the material is harder and the same as the rubber-like elastic material forming the elastic legs 3, respectively. The elastic engaging members 4 made of rubber-like elastic material are embedded and integrated with each other by vulcanization adhesion. The elastic engagement member 4 is formed in a shape similar to the shape of the tip portion of the leg body 32 including the retaining protrusion 32a.

The size of the retaining projection 32a and the corresponding press-fitting recess 22a and the elastic engaging member 4,
The wall thickness of the portion surrounding the elastic engagement member 4 in the tip end portion of the leg body 32 is appropriately set in consideration of the press-fitting resistance, the withdrawal load, and the like.

In manufacturing the anti-vibration support device of this embodiment,
First, an integrally molded product including the elastic leg 3, the first mounting member 1 and the elastic engaging member 4 is molded by a known insert molding method. That is, the first attachment member 1 is embedded in the base portion 31, and the elastic engagement member 4 is attached to the leg body portions 34, 34.
The elastic leg 3 is vulcanized and molded while being embedded in the distal end portion of the. Next, the press-fitting recess 22a of the second mounting member 2 made of a highly rigid material such as metal or fiber reinforced plastic.
Then, the tip end portions of the leg main body portions 34, 34 are press-fitted to easily assemble them into the illustrated state.

The leg body 34 and the elastic engaging member 4 are
It is preferable to bond and integrate by vulcanization adhesion, but non-adhesion may be possible depending on use conditions.

Therefore, the second mounting member 2 is inserted into a mold for vulcanizing and molding the elastic leg 3, and the elastic leg 3 is vulcanized to the second mounting member 2 at the same time when the elastic leg 3 is molded. There is no need to use a large mold corresponding to the second mounting member 2 having a different shape as in the case of bonding.

The vibration-damping support device according to the present embodiment fixes the first mounting member 1 to the engine side and mounts the second mounting member 2 through the mounting bolts that are inserted into the mounting holes 23a, 23a of the mounting seats 23, 23. It is mounted as an engine mount by fixing it to the vehicle body frame side to elastically support the engine.

Then, for example, when engine vibration from the engine is input to the first mounting member 1, the elastic leg 3
Since the leg body portions 32, 32 of are elastically repeatedly deformed,
The transmission of vibration to the second mounting member 2, and thus to the body frame side, is effectively insulated, and the vibration energy is effectively damped by the internal friction of the rubber-like elastic material in the leg body portions 32, 32. Further, when the amplitude in the Z direction increases, the upper stopper 3 to the arch portion 21 of the second mounting member 2
3 and the contact of the lower stopper 34 with the bottom plate portion 24 of the second mounting member 2 are alternately performed every half cycle of vibration, whereby excessive deformation of the leg body portions 32, 32 is prevented. . At this time, the upper stopper 33 and the lower stopper 34
Since is made of a rubber-like elastic material, noise is not generated due to interference with the arch portion 21 and the bottom plate portion 24 of the second mounting member 2.

The leg body portions 32, 32 of the elastic leg 3 are easily deformed to insulate and damp the vibration by inputting the vibration displacement. However, the elastic members embedded in the tip portions of the leg body portions 32, 32 are elastic members. Since the joining member 4 is formed of a rubber-like elastic material that is harder than the rubber-like elastic material forming the elastic legs 3, the joining member 4 is less deformed, and the leg main body portions 32, 32 are prevented from coming off.
It gives pull-out resistance to a. Further, with respect to the vibration in the X direction, the uneven surface 32b formed on the tip surfaces of the leg body portions 32, 32 and the press-fitting concave portion 22 in the second mounting member 2 are provided.
The engagement with the uneven surface 22b formed on the bottom surface of the "a" prevents it from coming off. Therefore, due to the input vibration, the press-fitting concave portion 22a of the second mounting member 2 causes the leg body portions 32, 3
2 does not come out and come off.

When the anti-vibration support device of this embodiment is to be discarded after a long period of use, the bolts fixing the mounting seats 23, 23 of the second mounting member 2 to the vehicle body frame side are removed, and the elastic legs 3 are attached. If a required load is applied in the pulling-out direction, the protrusions 32a, 32 for preventing the distal ends of the leg body portions 32, 32 from coming off.
While a is deformed together with the elastic engaging member 4, it is extracted from the press-fitting recesses 22a, 22a in the second mounting member 2,
Separated from the second mounting member 2. Therefore, by separating the second mounting member 2 made of a material such as metal that can be recycled as a resource from the elastic leg 3 and the elastic engagement member 4 made of a rubber-like elastic material that is difficult to recycle, wastes can be collected. It is possible to reduce waste and promote resource recycling. The elastic leg 3 and the elastic engaging member 4 embedded in the elastic leg 3 are made of the same rubber-like elastic material although they have different hardnesses, and therefore need not be separated for separation and disposal.

Further, even if the elastic leg 3 is damaged during use, if the elastic leg 3 and the second mounting member 2 are separated in the same manner, the second mounting member can be replaced when the elastic leg 3 is replaced. Two
Since it can be used as it is, it is not necessary to replace the entire anti-vibration supporting device, and the cost of replacing parts can be reduced.

[0024]

According to the anti-vibration support device of the first aspect of the present invention, since the tip end portions of the elastic legs are press-fitted and held in the press-fitting recesses formed in the second mounting member, the elastic legs are The elastic leg and the second mounting member can be easily separated by pulling them out from the mounting member, and the resources can be separated at the time of disposal. Moreover, since it is not necessary to use a large mold corresponding to the second mounting member having a different shape as in the case where the elastic leg is vulcanized and bonded to the second mounting member simultaneously with the molding of the elastic leg, it is not necessary to use the mold. The cost can be reduced.

According to the vibration isolating support device of the second aspect of the present invention, the elasticity of the rubber-like elastic material having a hardness higher than that of the elastic leg is provided at the tip of the elastic leg press-fitted into the press-fitting recess of the second mounting member. Since the engagement member is embedded, the distal end portion of the elastic leg can be held by the second attachment member in a state where the engagement member is not easily disengaged by the displacement force applied by the vibration input.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a vibration-isolating support device according to a preferred embodiment of the present invention, taken along a plane orthogonal to the axis of a first mounting member 1 and viewed from the front side.

FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG.

FIG. 3 is a cross-sectional view taken along the line BB ′ in FIG.

[Explanation of symbols]

1 First mounting member 2 Second mounting member 21 Arch 22 Side plate 22a Press fit recess 22b uneven surface 23 mounting seat 24 Bottom plate 25 ribs 3 elastic legs 31 base 32 leg body 32a Overhanging portion for retaining 32b uneven surface 33 Upper stopper 34 Lower stopper 4 Elastic engagement member

Claims (2)

[Claims] 1. A first mounting member (1) connected to one of a support and a supported body, and the first mounting member (1).
A second attachment member (2) arranged on the outer peripheral side of the first attachment member (2) connected to the other of the support and the supported body, and extending from the first attachment member (1) toward the second attachment member (2). An elastic leg (3) made of a rubber-like elastic material, wherein the tip of the elastic leg (3) is press-fitted into a press-fitting recess (22a) formed in the second mounting member (2). Anti-vibration support device. 2. An elastic engagement member (4) made of a rubber-like elastic material having a hardness higher than that of the elastic leg (3) is embedded and integrated at the tip of the elastic leg (3). The anti-vibration support device according to claim 1.