JP2531850Y2 - Liquid filled type vibration damping device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid filled type vibration damping device, and more particularly to a liquid filled vibration damping device interposed between a vehicle suspension and a vehicle body.

[0002]

2. Description of the Related Art As a conventional liquid filled type vibration damping device, a suspension support interposed between a vehicle suspension and a vehicle body as shown in FIGS. 4 and 5 is known.

In this suspension support, a metal support tube 14 for inserting and supporting an absorber rod 12 constituting an automobile suspension is integrally formed inside a rubber body 10, and a metal support cylinder 14 is provided around the rubber body 10. The inner cylinder 16 is formed integrally to form an anti-vibration rubber portion 18.

On the outside of the metal inner cylinder 16,
The vehicle body mounting bracket 20 is integrally attached to the vehicle body mounting bracket 2.
A stir plate 24 is disposed between the rubber wall 22 integrally formed on the upper portion of the rubber member 0 and the rubber body 10 of the vibration-proof rubber portion 18,
In addition, a liquid chamber 28 filled with a vibration damping liquid 26 is formed therein.

As shown in FIG. 5, the stirring plate 24 is in a state in which a rubber swelling member 32 is integrally formed on the inner peripheral edge of a metal plate-shaped ring member 30 by a rubber vulcanizing mold. The bulging member 32 projects into the liquid chamber 28. The rubber swelling member 32 prevents the agitating plate 24 from contacting the inner surface of the liquid chamber 28 of the rubber body 10 or the rubber wall 22 due to vibration and damaging the rubber body 10 or the rubber wall 22. ing.

[0006] The vehicle body mounting bracket 20 includes an upper member 34.
And the lower member 36 are previously integrated by welding or the like to form a mounting portion 38 to the vehicle body.

[0007]

However, in the above-mentioned conventional suspension support, since the metal plate-shaped ring member 30 is used for the stirring plate 24, the vibration on the wheel side is reduced by the shock absorber rod 12 rather than the shock absorber 12.
To the suspension support through the stir plate 24
Is moved up and down, it comes into contact with the inner surfaces of the rubber body 10 and the rubber wall 22 constituting the liquid chamber 28, and the rubber body 10 and the rubber wall 22
Therefore, the rubber swelling member 32 must be formed integrally with the inner peripheral edge of the ring member 30.
Moreover, since a molding means using a rubber vulcanization mold is used to form the swelling member 32, the production process is increased, and the production efficiency of the stirring plate 24 is poor.
Therefore, there is a problem that the production cost is increased.

Even if the rubber swelling member 32 is formed integrally with the stirring plate 24 as described above, the ring member 3
When the agitating plate 24 is strongly pressed against the rubber body 10 or the rubber wall 22 because the metal member 0 is made of metal and does not bend, even if the rubber swelling member 32 is present. There is a problem that the rubber body 10 and the rubber wall 22 may be damaged.

Accordingly, the present invention can facilitate the production of the stirring plate, improve the production efficiency, and reduce the production cost. Further, even if the stirring plate comes into contact with the rubber body or the rubber wall, the rubber body can be manufactured. It is an object of the present invention to provide a liquid-filled type vibration damping device which can improve durability without damaging the rubber wall.

[0010]

Means for Solving the Problems The present invention has been to Do to solve the above problem, a support tube for inserting supporting the supported member is integrally formed on the inner side of the rubber body and the rubber body A body mounting bracket is integrally attached to the outside of the vibration isolating rubber portion having an inner cylinder integrally formed on the outside of the body, and a vibration damping member is provided between a rubber wall provided above the vehicle body mounting bracket and the rubber body. A liquid-filled vibration isolator in which a liquid chamber for enclosing the liquid is formed, and a ring-shaped stirring plate protruding toward the liquid chamber is provided between the rubber body and the rubber wall of the vibration-isolating rubber portion. , the stirring plate, a plate-shaped ring portion, and said rubber body and the bulging portion of the rubber wall breakage prevention located on the inner periphery of the ring portion is integrally formed of synthetic resin, the agitating plate
A flexible portion is formed near the boundary between the ring portion and the bulging portion .

[0011]

[0012]

In the liquid-filled type vibration damping device having the above structure, the plate-shaped ring portion and the rubber body and the bulging portion for preventing the rubber wall from being damaged at the inner peripheral edge of the ring portion are made of synthetic resin. In order to form a stir plate by integrally molding at
There is no need to integrate a metal ring member and a rubber swelling member with a rubber vulcanizing mold as in the past, and it is possible to easily form various shapes at once and to produce Fewer processes are required, productivity is improved, and production costs can be reduced.

[0013] Also, an integrally molded by synthetic resin, since various shapes can be easily formed, and be formed integrally with the flexible portion at the boundary portion between the bulging portion and the ring portion, which Even if the stirring plate moves up and down largely due to the up and down movement of the absorber rod and comes into contact with the rubber body or the rubber wall, the flexible portion bends and deforms to reduce the impact and prevent breakage.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views showing one embodiment of the present invention.

In this embodiment, a suspension support is shown as an example of a liquid-filled type vibration damping device. The suspension support includes an anti-vibration rubber portion 40 and a vehicle body mounting bracket 42.
The anti-vibration rubber portion 40 and the vehicle body mounting bracket 42 are separately formed in advance.

The vibration-proof rubber portion 40 supports an absorber rod 44 constituting the suspension of the vehicle inside the vehicle body mounting bracket 42, and prevents the vibration on the wheel side from being transmitted to the vehicle body side. 46, a metal support cylinder 48, and a metal inner cylinder 50.

The rubber main body 46 mainly performs vibration damping action, and is formed integrally between the support cylinder 48 and the inner cylinder 50 by a rubber vulcanization type between the support cylinder 48 and the inner cylinder 50. ing. The upper surface of the rubber main body 46 is in a state of having a depression.

The metal support tube 48 is mounted inside the rubber body 46 and is used to hold the suspension rod 4 of the suspension.
4 is inserted and supported.

The metal inner cylinder 50 is attached to the outer periphery of the rubber main body 46 and is integrated with the vehicle body mounting bracket 42, and has a flange 52 at the upper end for connecting and integrating with the vehicle body mounting bracket 42. A bent portion is formed at the lower end, and an inward bent portion 54 for holding the lower portion of the rubber body 46 is formed at the lower end.

The vehicle body mounting bracket 42 includes a metal upper member 5.
6 and the lower member 58 are welded and integrated at a mating portion projecting outward, and the mating portion is formed as a vehicle body attaching portion 60. A rubber wall 64 having a through hole 62 corresponding to the outer periphery of the upper end of the support cylinder 48 is integrally formed on the inner peripheral surface of the upper member 56 constituting the vehicle body mounting bracket 42 by a rubber vulcanization type. A metal ring 66 is integrally formed on the inner peripheral surface of the rubber wall 64 by a rubber vulcanizing mold, and the inner peripheral surface of the rubber wall 64 is formed on the inner peripheral surface of the support cylinder 48 by the ring 66. It can come in close contact with.

Then, the anti-vibration rubber portion 40 is inserted into the lower member 58 constituting the vehicle body mounting bracket 42, and the flange portion 52 at the upper end of the inner cylinder 50 is placed on the upper end surface of the lower member 58. Then, the upper member 56 is placed on the lower member 58 in the liquid, the inner periphery of the rubber wall 64 is attached to the outer periphery of the upper end of the support cylinder 48, and the mating portion of the upper member 56 and the lower member 58 is caulked. And the flange portion 52 of the inner cylinder 50
Is sandwiched between the rubber body 40 and the rubber wall 64, and a liquid chamber 70 in which a vibration damping liquid 68 is sealed is formed between the rubber body 46 and the rubber wall 64.

Further, when the liquid chamber 70 is formed, a stirring plate 72 is disposed between the rubber body 46 and the rubber wall 64, and the stirring plate 72 is disposed in the liquid chamber 70 in a protruding state. I have. As shown in an enlarged view in FIG. 2, the stirring plate 72 includes a plate-shaped ring portion 74, the rubber body 46 and the bulging portion 76 for preventing the rubber wall 64 from being damaged at the inner peripheral edge of the ring portion 74. Are integrally formed with synthetic resin. As the synthetic resin for forming the stirring plate 72, for example, 66 nylon or the like can be used, and a mixed material in which glass fiber is mixed with 66 nylon can also be used.

Therefore, the productivity is improved as compared with the case where the metal plate and the rubber are integrally formed by a rubber vulcanization type.

In this embodiment, since the stirring plate 72 is formed integrally with a synthetic resin and is easily formed, a flexible portion is provided near the boundary between the bulging portion 76 and the ring portion 74. A flex rib 78 is formed, and when the absorber rod 44 moves up and down and the stirring plate 72 comes into contact with the rubber body 46 and the rubber wall 64, the flex rib 78 portion bends and damages the rubber body 46 and the rubber wall 64. To prevent it.

FIG. 3 shows another embodiment of the present invention. In this embodiment, a plate-shaped ring portion 82 and a bulging portion 84 are integrally formed of a synthetic resin to form the stirring plate 80 in the same manner as in the above-described embodiment, and the ring portion 82 and the bulging portion 84 are formed. By integrally forming a thin portion 86 as a flexible portion near the boundary portion, the absorber rod 44 moves up and down to move the stirring plate 8.
When 0 contacts the rubber body 46 and the rubber wall 64, the thin portion 86 bends to prevent the rubber body 46 and the rubber wall 64 from being damaged. Thus, the stirring plate in the present invention can take various forms.

[0026]

As described above, according to the liquid filled type vibration damping device according to the present invention, the plate-shaped ring portion and the rubber body and the rubber wall located at the inner peripheral edge of the ring portion are prevented from being damaged. The swelling part is integrally molded with a synthetic resin to form a stirring plate, so that a metal ring member and a rubber swelling member are formed by a rubber vulcanization mold as in the related art. There is no need for integration, no complicated process is required, it is possible to easily form various shapes at once, and the number of production steps is small, thus improving productivity and reducing production cost There is an effect that can be.

[0027] Also, an integrally molded by synthetic resin, since various shapes can be easily formed, it can be formed integrally with the flexible portion in the vicinity of the boundary portion between the bulging portion and the ring portion, therefore Even when the stirring plate moves up and down greatly due to the up and down movement of the absorber rod and comes into contact with the rubber main body or the rubber wall, the flexible portion is bent and deformed to reduce the impact and prevent damage. .

[Brief description of the drawings]

FIG. 1 is a sectional view showing a suspension support according to an embodiment of a liquid-filled type vibration damping device of the present invention.

FIG. 2 is a sectional view showing a stirring plate used for the suspension support of FIG.

FIG. 3 is a cross-sectional view illustrating a stirring plate according to another embodiment of the present invention.

FIG. 4 is a sectional view showing a conventional suspension support.

FIG. 5 is a sectional view showing a stirring plate used for a conventional suspension support.

[Explanation of symbols]

Reference Signs List 40 Anti-vibration rubber part 42 Body mounting bracket 46 Rubber body 48 Support cylinder 50 Inner cylinder 64 Rubber wall 68 Liquid 70 Liquid chamber 72, 80 Stirring plate 74, 82 Ring part 76, 84 Swelling part 78 Flex rib 86 Thin part
HB008702

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoshiyuki Irie 3rd Ikuyama, Uchikoshi, Miyoshi-cho, Nishikamo-gun, Aichi Pref. Toyo Tire & Rubber Co., Ltd. (JP, A) JP-A-63-190949 (JP, A) JP-A-4-54344 (JP, A) JP-A-2-113039 (JP, U) JP-A-4-19932 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] A vehicle body mounting bracket is provided outside a vibration-isolating rubber portion in which a support cylinder for inserting and supporting a supported member is integrally formed inside a rubber body, and an inner cylinder is integrally formed outside the rubber body. A liquid chamber for sealing a vibration damping liquid between a rubber wall provided on an upper part of the vehicle body mounting bracket and the rubber body, and a rubber body of the vibration isolating rubber portion. In a liquid-sealed type vibration damping device, wherein a ring-shaped stirring plate protruding toward the liquid chamber is disposed between the rubber plate and the rubber wall, the stirring plate is located at a plate-shaped ring portion and at an inner peripheral edge of the ring portion. wherein the rubber body and the bulging portion of the rubber wall to prevent damage integrally molded of synthetic resin, in the vicinity of the boundary portion between the ring portion and the bulging portion of the stirring plate to the flexible
Liquid filled type vibration damping device characterized by forming a part .