JP2521763Y2 - Upper support for suspension - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper support for a suspension of an automobile, an industrial vehicle and the like.

[0002]

2. Description of the Related Art As a conventional suspension upper support, as shown in FIG. 2, a cylindrical upper bracket 11 having a mounting portion 111 protruding in a centrifugal direction at a lower end portion.
0, and the upper bracket 110 protruding in the centrifugal direction at the upper end.
Mounting portion 121 superimposed on the mounting portion 111
100 comprising a cylindrical lower bracket 120 having
And a rubber bush 200 fitted and fixed to the inner peripheral surface of the lower bracket 120, and a hat-shaped bearing member whose side surface is fitted and fixed to the inner peripheral surface of the rubber bush 200 and the shaft S is fixed to the center hole of the bottom surface. And 300 are known. A stopper rubber 400 is provided on the upper end surface and the lower end surface of the bearing member 300 so as to contact the upper bracket 110 and the lower bracket 120 so as to function as a stopper.

[0003] The upper support comprises an upper bracket 1
10 and mounting portions 111 and 1 of lower bracket 120
The bolt 21 is fixed to the vehicle body with bolts, and the tip of the shaft S extending from the shock absorber is fixed to the bearing member 300 before use. The rubber bush 200 absorbs the relative displacement generated between the shaft of the shock absorber and the vehicle body, thereby reducing vibration, noise, and the like.

[0004]

In the above-mentioned conventional upper support, water enters the case 100 from the overlapping surface of the mounting portion 111 of the upper bracket 110 and the mounting portion 121 of the lower bracket 120 by capillary action. Therefore, the water causes deterioration of the rubber bush 200 and the stopper rubber 400 and corrosion of structural components, and the like.
There is a problem that the durability is poor.

The present invention has been made in view of the above circumstances, and prevents water from entering the case from between the mounting portion of the upper bracket and the mounting portion of the lower bracket, thereby improving durability. It is an object of the present invention to provide a suspension upper support that can be achieved.

[0006]

According to the present invention, there is provided a cylindrical upper bracket having a mounting portion projecting in a centrifugal direction at a lower end portion.
A case formed of a cylindrical lower bracket having a mounting portion protruding in a centrifugal direction at the upper end and superposed on the mounting portion of the upper bracket, an outer cylinder fixed to an inner peripheral side surface of the case, and an inner side of the outer cylinder. Inner cylinder, which is arranged at
And a bearing member made of an elastic body interposed between the outer cylinder and the inner cylinder and connecting the two, and the upper bracket mounting portion and the lower bracket mounting portion. An annular seal member is disposed between the inner peripheral side surface of the case and the outer peripheral surface of the outer cylinder of the bearing member in a portion where
The seal member is the upper bracket, the lower bracket,
And the outer cylinder is sandwiched between the three members.

[0007]

In the upper support for suspension of the present invention, the inner peripheral side surface of the case where the mounting portion of the upper bracket and the mounting portion of the lower bracket are overlapped is formed between the upper bracket, the lower bracket, and the outer cylinder. It is closed by the clamped annular seal member. Therefore, it is possible to prevent water from entering the case from the overlapped portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The suspension upper support according to the present embodiment includes a metal case 1 fixed to the vehicle body side and a case 1
And a ring-shaped seal member 3 disposed between the inner peripheral surface of the case 1 and the outer peripheral surface of the bearing member 2 to which a shaft S extending from the shock absorber is connected. I have.

The case 1 has a cylindrical upper bracket 4 having a mounting portion 41 protruding in the centrifugal direction at the lower end and a flange portion 42 protruding in the centripetal direction at the upper end, and an upper bracket protruding in the centrifugal direction at the upper end. 4 comprises a cylindrical lower bracket 5 having a mounting portion 51 superimposed on the mounting portion 41 and a flange portion 53 protruding in the centripetal direction at the lower end and forming a through hole 52 at the center of which the shaft S is inserted. Have been. Then, the mounting portion 41 of the upper bracket 4
A flange-shaped peripheral portion 43 that covers the peripheral edge of the mounting portion 51 of the lower bracket 5 is formed at the peripheral edge of the lower bracket 5.
In addition, three bolts 9 for fixing the upper support of the present embodiment to the vehicle body side are attached to the attaching portion 41 of the upper bracket 4 and the attaching portion 51 of the lower bracket 5 at equal intervals in the circumferential direction. ing. The inner diameter of the upper bracket 4 is set slightly larger than the inner diameter of the lower bracket 5.

The bearing member 2 includes an outer cylinder 6 fixed to the inner peripheral side surface of the case, an inner cylinder 7 arranged concentrically inside the outer cylinder 6 and connected to a shaft, an outer cylinder 6 and an inner cylinder 7. And a tubular elastic body 8 interposed between them to connect them.
The outer cylinder 6 is a metal cylindrical member, and a lower half portion thereof is fitted and fixed to the inner peripheral side surface of the lower bracket 5.

The inner cylinder 7 is a bottomed thick metal cylindrical member having a bottom 71 formed with a center hole 72 through which the tip of the shaft S is inserted. The elastic body 8 is made of a rubber material such as NR, and is vulcanized and bonded to the inner peripheral surface of the outer cylinder 6 and the outer peripheral surface of the inner cylinder 7. The elastic body 8 is integrated with the connecting portion 81 connecting the outer cylinder 6 and the inner cylinder 7 and the connecting portion 81 on the upper surface and the lower surface of the inner cylinder 7 so as to be spaced apart from the upper bracket 4 and the lower bracket 5, respectively. Annular stopper portion 82 formed in
And 83. The stoppers 82 and 8
Reference numeral 3 functions as a stopper function by contacting the upper bracket 4 and the lower bracket 5 when an excessively large load is input in the axial direction between the inner cylinder 7 and the outer cylinder 6 (case 1).

The seal member 3 is disposed between the inner peripheral side surface of the case 1 and the outer peripheral surface of the outer cylinder 6 at a portion where the mounting portion 41 of the upper bracket 4 and the mounting portion 51 of the lower bracket 5 overlap. , The upper bracket 4, the lower bracket 5, and the outer cylinder 6. The seal member 3 is made of a rubber O-ring, and is sandwiched between the upper bracket 4, the lower bracket 5 and the outer cylinder 6.
And a thickness (cross-sectional diameter) that can be held in close contact with the lower bracket 5.

The upper support of this embodiment is manufactured as follows. First, the outer cylinder 6 and the inner cylinder 7 are arranged concentrically at predetermined positions in the cavity of the vulcanization mold, and the cavity is filled with a rubber material, and the outer cylinder 6, the inner cylinder 7 and the elastic body 8 are vulcanized. Bond with sulfur to form an integral body. This one piece is
After the upper bracket 4 is overlaid on the lower bracket 5 with the sealing member 3 installed at the boundary between the outer peripheral surface of the outer cylinder 6 and the lower bracket 5, each mounting portion 41 is fixed. , 51 are attached to each other by bolts 9. Thereby, the seal member 3 is sandwiched between the upper bracket 4, the lower bracket 5, and the outer cylinder 6, and the upper support of the present embodiment is completed.

The upper support is formed by inserting a distal end of a shaft S extending from the shock absorber into a center hole 72 of the inner cylinder 7 and inserting a lock nut 10 into a male screw formed at the distal end.
By tightening, the three bolts 9 connected to the shaft S of the shock absorber and attached to the mounting portions 41 and 51 of the upper bracket 4 and the lower bracket 5 are fixed to the vehicle body side for use.

The upper support for suspension according to the present embodiment has an inner peripheral side surface of the case 1 where the mounting portion 41 of the upper bracket 4 and the mounting portion 51 of the lower bracket 5 overlap each other. And the outer cylinder 6 is closed by an annular seal member 3 sandwiched between the three members. Therefore, water is prevented from entering the case 1 from the overlapped portion. Therefore, it is possible to prevent the rubber deterioration of the elastic body 8 and the corrosion of the metal parts caused by the water entering the case 1 and to improve the durability.

[0016]

As described in detail above, the upper support for suspension of the present invention is characterized in that components entering into the case from the overlapping surface of the upper bracket and the lower bracket are deteriorated or corroded by water. And durability is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a suspension upper support according to the present embodiment.

FIG. 2 is a sectional view of a conventional suspension upper support.

[Explanation of symbols]

1 is a case, 2 is a bearing member, 3 is a seal member, 4 is an upper bracket, 5 is a lower bracket, 6 is an outer cylinder, 7 is an inner cylinder,
8 is an elastic body, 41 and 51 are mounting parts, and S is a shaft.

Claims (1)

(57) [Scope of request for utility model registration] 1. A cylindrical upper bracket having a mounting portion protruding in a centrifugal direction at a lower end portion, and a cylindrical lower bracket having a mounting portion protruding in a centrifugal direction at an upper end portion and superimposed on a mounting portion of the upper bracket. A case, and an outer cylinder fixed to the inner peripheral side surface of the case, an inner cylinder disposed inside the outer cylinder and connected to a shaft, and both interposed between the outer cylinder and the inner cylinder. A bearing member made of an elastic body to be connected, wherein an inner peripheral side surface of the case at a portion where the mounting portion of the upper bracket and the mounting portion of the lower bracket are overlapped, and the bearing member Between the outer surface of the outer cylinder of
An upper support for a suspension, wherein an annular seal member is provided, and the seal member is sandwiched between the upper bracket, the lower bracket, and the outer cylinder.