JPH07269649A - Rubber vibration insulator - Google Patents

Abstract

PURPOSE:To provide a rubber vibration insulator capable of being previously easily integrated, lightened and easily mounted on an automobile or the like. CONSTITUTION:An annular elastic body 13 having a support member 14 fixed integrally to the inside of a hollow body 17 formed between a tubular first member 11 having an outer peripheral flange 111 and a second member 12 having an outer peripheral flange 121 facing to and making surface contact with the outer peripheral flange 111 is disposed in the hollow part 17. The respective mating surfaces 111a, 121a of the outer peripheral flange 111 and facing outer peripheral flange 121 are welded by high frequency induction heating to each other through an annular conductive member 15 provided between these mating surfaces 111a, 121a so that the elastic member 13 is pinched and held between the first and second members 11, 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration rubber used for, for example, an upper support in a strut type suspension device.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Laid-Open No. 58-13224.
A vibration-proof rubber used in the strut-type suspension device described in Japanese Patent No. 0 is known.

That is, as shown in FIG. 9, a cylindrical metal upper member 51 having a flat flange-shaped outer peripheral edge portion 511, and a surface-contacting flat flange-shaped member having a mating surface 55 which is in contact with the flat flange-shaped outer peripheral edge portion 511. A tubular metal lower member 52 having an outer peripheral edge portion 521 is provided, and a collar portion 54a radially outwardly protruding inside is provided between the respective tubular portions of the upper member 51 and the lower member 52. There is known an anti-vibration rubber 50 in which an inner tubular metal member 54 having a cylindrical shape is concentrically fixed, and a tubular elastic body 53 that is independently separated from the upper member 51 and the lower member 52 is sandwiched. .

This anti-vibration rubber 50 has a tip end 61 of a piston rod 60 slidably extending from a cylinder (not shown) of a suspension damper of an automobile, which is inserted through a central hole 54b of an inner tubular metal member 54 and elasticized by a nut 8. After fixing the body 53, the elastic body 53, which is independently separated, is surrounded by the upper member 51 and the lower member 52, and the flat flange-shaped outer peripheral edge portion 511 and the face-contact flat flange-shaped outer peripheral edge portion 512 are contacted with each other. By inserting the bolts 57 into the plurality of mounting holes 56 penetrating the same and the mounting holes 7a of the vehicle body 7 and tightening them with the nuts 9, the elastic body 53 is inserted between the tubular portions of the upper member 51 and the lower member 52. It was configured to be pinched.

[0005]

Therefore, the assembly to the automobile becomes troublesome, and the weight of the tubular upper member 51 and the tubular lower member 52 for sandwiching the elastic body 53 is made of metal. There is a problem that it becomes heavy and it becomes disadvantageous in terms of reducing fuel consumption of the automobile. Of course, it is conceivable that the upper member 51 and the lower member 52 are made of resin, but it was necessary to strongly bond them to each other.

The present invention has been invented in view of the above problems, and an object thereof is to provide a vibration-proof rubber which can be reduced in weight and can be easily assembled to an automobile or the like. To do.

[0007]

In order to achieve the above-mentioned object, the first means of the present invention is a tubular first member made of a resin material having an outer peripheral flange, and the tubular first member. A second member made of a resin material, which has a facing outer peripheral flange to be in contact with each other, and forms a hollow portion surrounded by the tubular first member, a tubular elastic body disposed in the hollow portion, and an outer periphery. A support member that has a flange portion that extends outward in the radial direction, is disposed inside the tubular elastic body, and at least the collar portion is embedded and fixed in the tubular elastic body; An annular conductive member is provided between respective mating surfaces of the outer peripheral flange and the facing flange, the outer peripheral flange and the facing flange are subjected to high-frequency conduction heating welding, and the cylindrical elastic body is substantially the cylinder. It is characterized in that it is held by being sandwiched between the first member and the second member having the shape of a circle. One in which you configure the anti-vibration rubber to be.

The second means is characterized in that the annular conductive member in the first means is provided with a plurality of through holes penetrating from one surface to the other surface.

A third means is characterized in that the annular conductive member in the first means has a mesh.

[0010]

[Action]

(Operation of First Means) As described above, according to the first means of the present invention, the first member and the second member on the cylinder are each made of a resin material, and the high frequency of the annular conductive member is provided between the mating surfaces of these members. To provide an anti-vibration rubber integrally assembled by sandwiching an annular elastic body in a hollow portion formed by a cylindrical first member and a second member by permeable heat welding and easily holding it. You can

(Operation of Second Means) In the second means, the welded portions enter into a plurality of through holes provided in the annular conductive member to weld the cylindrical first member and the mating second member. Therefore, the tubular elastic body can be strongly held in the hollow portion formed by the tubular first member and the second member.

(Operation of Third Means) In the third means, since the ring-shaped conductive member has a mesh, like the second means, it enters the welded portion in the mesh and becomes a tubular first member. The annular elastic body can be strongly held in the second member of the opponent.

In any one of the means, preferably, the resin material used for the cylindrical first member and the mating second member are the same material or similar materials, so that both can be strongly welded.

[0014]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4 show a first embodiment of the present invention, in which 11 is a tubular first member made of a reinforced resin in which glass fibers are mixed in nylon, polypropylene or the like.

The tubular first member 11 has a flared tubular portion 112 having a bottom portion 12a, and the tubular portion 1 is provided at one axial end thereof.
An outer peripheral flange 111 extending radially outward from 12 is integrally formed. A ring-shaped outer peripheral flange mating surface 111a is formed on one surface of the outer peripheral flange 111, and an annular convex portion 111b protruding toward one end near the center thereof.
Are formed.

On the other hand, as a mating member, the first mating surface 1 of the outer peripheral flange 111 of the cylindrical first member 11 at the outer peripheral edge portion.
A dish-shaped second member 12 having an annular second facing outer peripheral flange 121 with 11a is arranged facing each other.

The tubular first member 11 and the second mating member
A hollow portion 17 surrounded by a cylinder is formed between the members 12,
A cylindrical elastic body 13 made of an elastomer such as rubber is arranged in the hollow portion 17, and the cylindrical elastic body 13 is sandwiched and held between the cylindrical first member 11 and the second member 12. It is the vibration-proof rubber 10.

2 of the anti-vibration rubber 10 assembled in this way
The present invention will be further described in detail by describing the types of assembling methods based on FIGS. 4 and 5, respectively. As shown in FIG. 4, the initially described assembly method is as follows. First, the tubular first member 11, the annular elastic body 13, and the second member 12 are the tubular first member 11 and the annular elastic body 13. , And the second member 12 are independent of each other.

The second member 12 is formed with a shallow dish-shaped tubular portion 122 extending in the centripetal direction from the facing outer peripheral flange 121 having a bottom portion 122a on the side facing the tubular 111. Then, on the annular mating surface 121a of the facing flange that is in contact with the mating surface 111a of the outer peripheral flange, the first cylindrical
Annular projection 1 formed on the outer peripheral flange 111 of the member 11
An annular recess 121b that fits with a gap corresponding to 11b
Are formed. A thin steel plate was formed in the annular recess 111b. An annular conductive member 15 is placed with a gap in the circumferential direction.

A support member 14 such as a metal inner tubular fitting is concentrically fixed inside the tubular elastic body 13. Specifically, the support member 14 includes a flange portion 141 that extends outward at the center of the cylindrical portion 142 in the axial direction.
Are embedded concentrically at the edge of the inner circumference 132 of the tubular elastic body 13, and are integrally vulcanized and bonded to the tubular elastic body 13.

The cylindrical elastic body 13 has one end face 1 in the axial direction.
An annular notch recess 133a is formed in 33, and an annular notch recess 134a is also formed in the other end surface 134.

Therefore, as shown by the arrows (a) and (b), the tubular first member 11 is different from the tubular elastic body 13.
Then, while relatively moving the second member 12 in the axial direction by a pressing press (not shown), the second member 12 is pressed and well-known high frequency induction heating is used to uniformly select only the annular conductive member 15 in a short time. The first mating surface 11 of the first member 11 is indirectly heated.
The annular convex portion 121b formed on the surface 1a and the annular concave portion of the second member 12 are melted in the vicinity of 121b to form a cylindrical first portion.
The member 11 and the second member 12 are welded.

At the time of this welding, the annular elastic body 13 is
As shown in the figure, in the hollow portion 17 formed by the tubular portion 112 of the tubular first member 1 and the tubular portion 122 of the second member 12,
A preliminary compression force is applied in the axial and radial directions,
It will be held in the hollow portion 17.

Here, the cylindrical first member 11 is made of a polyamide resin reinforced with glass fiber or the like, and the second member 12 is also made of the same resin material. As described above, it is desirable that the first member 11 and the second member 12 use the same material. Further, although the cylindrical portion 122 is formed on the second member 12 in the first embodiment, it may be a flat surface, and it is sufficient if a hollow portion can be formed between the second member 12 and the first member 11.

Further, the bottom portion 112a of the cylindrical first member 11 is
A relatively large through window 113 is formed in the central portion of the above, and a through hole 123 is also formed in the central portion of the bottom portion 122a of the second member 12. Then, on the opposite side of the tubular portion 122, a tubular reinforcing portion 124 that reinforces the second member 12 itself.
Are formed. Further, as shown in FIG. 6, ribs 125 may be provided inside the reinforcing member 124.

The through hole 123 is for inserting a piston rod (not shown) extending slidably from the cylinder of the suspension damper of the automobile, and the through window 113.
Is for fixing the tip of the piston rod inserted through the through hole 123 to the support member 14.

Next, a second embodiment will be described while explaining another assembling method based on FIG. In the figure, the first tubular member, the second member and the supporting member have the same shape as that of the first embodiment, and therefore, the same reference numerals are given and described.

The tubular elastic body 23 employed here is integrally vulcanized and bonded to the second member 12 in advance. That is,
One end surface 232 of the cylindrical elastic body 23 is a tapered outer peripheral surface 2
31 and the inner peripheral surface 232 are formed in a smoothly protruding bump-shaped protrusion 233 in an annular shape, and when the elastic body 23 is pre-compressed in the axial direction, the tubular first member 11 Bottom 11
1a is compressed so that it can be flatly deformed, and the other end has an annular joint surface 122a that is joined to the bottom portion 122a of the second member 12, and the second member 1 is provided at the center thereof.
The cylindrical protruding portion 235 fitted in the second through hole 123 is fitted with the annular engaging portion 235a provided at the end thereof and is vulcanized and bonded integrally with the second member 12.

At this time, the metallic support member 14 inside the cylindrical elastic body 23 is integrally vulcanized and bonded by embedding the flange portion 141 in the inner peripheral edge portion of the elastic body 23 as in the first embodiment. There is.

As described above, in the second embodiment, after the tubular elastic body 23 is substantially fixed to the bottom portion 122a in advance, the tubular first member 11 is attached to the second member 12 in the embodiment. In the same manner as in No. 1, the cylindrical rubber elastic body 23 is surrounded by the relative pressure in the axial direction as shown by the arrows (c) and (d) while being pressed, and the facing outer peripheral flange 121 of the second member 12 is aligned. An annular convex portion formed on the mating surface 111a of the outer peripheral flange 111 of the first member 11 is caused to generate heat by the high frequency induction heating of the annular conductive member 15 disposed with a gap in the annular concave portion 121b formed on the surface 121a. The vibrating rubber is constituted by melting the vicinity of 111b and the vicinity of the annular recess 121b, and welding the cylindrical first member 11 and the second member 12 which is the mating member.

At this time, the annular elastic body 23 is pre-compressed in the axial direction and the radial direction, and the first member 11 and the second member 1
It will be retained in the hollow portion formed between the two.

Next, a third embodiment will be described with reference to FIGS. 6 and 7. This embodiment is similar to the first embodiment, and the same parts will be described with the same reference numerals.

In this embodiment, the first member 1 having a substantially cylindrical shape is used.
No. 1 outer peripheral flange 111 mating surface 11a and second member 12
Is characterized by an annular conductive member 25 provided between the facing outer peripheral flange 121 and the mating surface 121a. The annular conductive member 25 is formed on a ring 251 formed of a thin aluminum plate or the like in the circumferential direction. A plurality of through holes 25 at intervals
1a is applied.

By providing such a through hole 251a, since the welding resin enters the through hole 251a during high frequency heat conduction heating welding, the welding area is increased and
The engaging action occurs between the first member 11 and the second member 12,
The member 11 and the second member 12 can be strongly welded together.

Finally, as a fourth embodiment, the annular conductive member 25 is replaced with an annular conductive member 35 by a wire mesh ring 351 having a mesh 251a woven by fine wires as shown in FIG. It can be configured using.

In this case, the welding resin enters the mesh 251a, and the first member 11 and the second member 12 can be strongly welded as in the third embodiment.

[0037]

According to the present invention, the weight of the vibration-proof rubber can be reduced, and the vibration-proof rubber can be easily integrated in advance so that it can be easily attached to an automobile or the like. In addition, it is possible to provide a highly productive pre-compression anti-vibration rubber capable of simultaneously pre-compressing the elastic body during welding.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view of the annular conductive member in FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is an explanatory view showing a sectional view of the assembling method of the first embodiment shown in FIG.

FIG. 5 is an explanatory view illustrating a second embodiment using an assembling method shown in cross section.

FIG. 6 is a sectional view of a third embodiment.

7 is a perspective view of an annular conductive member in FIG.

8 is a perspective view of another annular member, which is the fifth embodiment and replaces the annular member of FIG.

FIG. 9 is a sectional view illustrating a conventional example.

[Explanation of symbols]

 10: Anti-vibration rubber 11: Cylindrical first member 111: Outer peripheral flange 111a: Mating surface of outer peripheral flange 12: Second member 121: Face-to-face outer peripheral flange 121a: Face-to-face outer peripheral flange 13: Elastic body 14: Support member 141: Collar part 15, 25, 35: Ring-shaped conductive member 17: Hollow part

Claims (3)

[Claims] 1. A cylindrical first member made of a resin material having an outer peripheral flange, and a facing outer peripheral flange that is in surface contact with the cylindrical first member,
A second member made of a resin material that forms a hollow portion surrounded by the tubular first member, a tubular elastic body disposed in the hollow portion, and a collar that extends radially outward on the outer periphery. A support member that has a portion, is disposed inside the tubular elastic body, and at least the brim portion is embedded and fixed in the tubular elastic body; and substantially the outer peripheral flange and the facing flange. An annular conductive member is provided between the respective mating surfaces, the outer peripheral flange and the facing flange are welded by high-frequency conduction heating, and the tubular elastic body is substantially the tubular first member and the first tubular member. An anti-vibration rubber which is held by being sandwiched between two members. 2. The anti-vibration rubber according to claim 1, wherein the annular conductive member has a plurality of through holes from one surface to the other surface. 3. The anti-vibration rubber according to claim 1, wherein the annular conductive member has a mesh.