JPH08210407A - Member mount - Google Patents

Abstract

PURPOSE: To provide a member mount which can improve the stopper property of a rubber stopper and can improve the durability. CONSTITUTION: This relates to a member mount equipped with an inner tube metal fitting 1 whose one end is attached vertically to the car body, an outer tube metal fitting 2, which is arranged coaxially outside the inner tube metal fitting 1 and also has an inward flange 22 extended inward in the diametrical direction at the bottom and is mounted roughly vertically to the member, a rubber member 3, which is interposed between the outer tube metal fitting 2 and the inner tube metal fitting 1, and a rubber stopper 4 which projects in axial direction from the bottom of the inward flange 22 and as made integrally with the rubber elastic body 3, containing the inward flange 22 within. The inward flange 22 of the outer tube metal fitting 2 is provided with a bulge 23, which is provided in the position corresponding to the back and forth directions of a vehicle and extends inward in diametrical direction from the tip of the inward flange 22, and a bend 24 which extends upward from the tip of the bulge 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member mount which is interposed between a member supporting a wheel and a vehicle body in an automobile suspension.

[0002]

2. Description of the Related Art Conventionally, for example, in a semi-trading type rear suspension, as shown in FIG. 7, arms 91 and 9 having a swing shaft supported by a subframe member 90 are provided.
2 is adopted, and the wheel W connected to the differential 93 is supported by the arms 91 and 92. In this type of suspension, member mounts 80 are provided between the subframe member 90 and the vehicle body.

This member mount 80 is shown in FIGS.
As shown in, the inner cylindrical metal fitting 81 having a substantially cylindrical shape and the inner cylindrical metal fitting 8
1, an outer tubular metal fitting 82 having an outwardly facing flange 82a coaxially arranged on the outer side of the first outer peripheral surface and an inwardly facing flange 82b formed at the lower end thereof, an inner tubular metal fitting 81, and an outer tubular metal fitting 82. And the outward flange 82a which are interposed between the curls 83a and which are formed at positions corresponding to the longitudinal direction of the vehicle.
Is formed integrally with the rubber elastic body 83, which has a stopper portion 83b axially protruding from the upper surface of the rubber elastic body 83, and an inward flange 82b which projects axially from the lower surface of the inward flange 82b. The rubber stopper 84 is formed.

In this member mount 80, as shown in FIG. 10, an upper end of an inner tubular metal fitting 81 is attached to a lower surface of a vehicle body 94 substantially vertically by a bolt (not shown) or the like, and a rebound stopper is attached to a lower end thereof. The metal fitting 95 is attached by a bolt 96 or the like. The outer tubular member 82 is press-fitted to the sub-frame member 90 of the suspension so that the outward flange 82a is in contact with the outer frame member 82, and is attached substantially vertically.

As a result, vibrations in the front-rear direction, left-right direction, and up-down direction of the vehicle, which are transmitted from the wheel W (outer cylinder fitting 82) side, are interposed between the inner cylinder fitting 81 and the outer cylinder fitting 82 by the rubber. The elastic body 83 is elastically deformed to be relaxed. Further, when excessive vertical vibration is generated from the wheel W (outer cylinder metal fitting 82) side, the stopper portion 83b abuts on the lower surface of the vehicle body, and the rubber stopper 84 abuts the rebound stopper metal fitting 95, so that the rubber elasticity is achieved. Excessive deformation of the body 83 is suppressed.

[0006]

By the way, since the rubber stopper 84 of the member mount 80 is provided in a state of being supported by the inward flange 82b of the outer tubular metal fitting 82, the input to the rubber stopper 84 is excessive. Then, the inward flange 82b is likely to be deformed. Therefore, a predetermined (initial) clearance at the time of design formed between the rubber stopper 84 and the rebound stopper fitting 95 cannot be maintained, and a sufficient stopper effect by the rubber stopper 84 cannot be obtained, resulting in poor durability. There is a problem.

Further, since the inward flange 82b is embedded in a portion between the rubber elastic body 83 and the rubber stopper 84, the inward flange 82b is in a radial direction such that the inward flange 82b abuts on the inner tubular metal fitting 81 side. When an excessively large input is applied to the rubber elastic body 8 by the edge of the inward flange 82b.
There is also a problem that durability is poor because 3 is cut.
In particular, when the above-mentioned curls 83a for cushioning the spring force of the rubber elastic body 83 are provided, since the deformation of the rubber elastic body 83 in the front-back direction becomes large, the curls 83a are formed. It is easy for disconnection to occur on the side where it is placed.

The present invention has been devised in view of the above problems, and it is an object to be solved to provide a member mount capable of improving the stopper characteristics of a rubber stopper and the durability thereof. is there.

[0009]

A member mount according to the present invention which solves the above-mentioned problems is provided with an inner cylindrical metal member whose upper end is mounted substantially vertically to a vehicle body, and is arranged coaxially outside the inner cylindrical metal member. An outer tubular metal fitting that has an inward flange extending inward in the radial direction at its lower end and is mounted substantially vertically to the member,
A rubber elastic body interposed between the outer tubular fitting and the inner tubular fitting, and axially protruding from the lower surface of the inward flange,
In a member mount including a rubber stopper integrally formed with the rubber elastic body including the inward flange inside, the inward flange of the outer tubular metal member is provided at a position corresponding to the front-rear direction of the vehicle. And a bent portion extending radially inward from the tip of the inward flange, and a bent portion extending upward from the tip of the protruding portion.

As a preferred aspect of the present invention, a reinforcing rib is provided between the overhanging portion and the bent portion.

[0011]

In the member mount of the present invention, since the overhanging portion extending radially inward from the tip of the inward flange is provided at a position corresponding to the front-rear direction of the vehicle of the outer tubular metal member, the rubber portion is correspondingly provided. The support surface of the stopper becomes large, and a good stopper function is exhibited for a larger input. This improves the stopper characteristics. Further, even if a large input is applied, the surface pressure is reduced, so that the inward flange is unlikely to be deformed. Therefore, the good stopper function exhibiting state of the rubber stopper is maintained for a long period of time, and the durability is improved.

By having the bent portion extending upward from the tip of the overhanging portion, the rigidity of the overhanging portion is increased, and the deformation of the inward flange is further suppressed. Further, since the edge is not arranged so as to be directed inward in the radial direction by having the bent portion, the occurrence of cutting of the rubber elastic body is prevented even when a large input in the front-rear direction of the vehicle acts. If the reinforcing rib is provided between the overhanging portion and the bent portion, the rigidity of the overhanging portion is further increased, which contributes to the improvement of durability.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a sectional view of the member mount of the present embodiment taken along the line II in FIG. 2, and FIG. 2 is a plan view of the member mount. As shown in FIGS. 1 and 2, the member mount of the present embodiment has an inner cylindrical metal fitting 1 having a substantially cylindrical shape, and an inward flange 22 having a pair of protruding portions 23 and 23 and bent portions 24 and 24 at the lower end. And an outer tubular metal fitting 2 disposed coaxially outside the inner tubular metal fitting 1, a rubber elastic body 3 interposed between the outer tubular metal fitting 2 and the inner tubular metal fitting 1, and an inward flange 22.
And a rubber stopper 4 projecting axially from the lower surface of the.

The inner tubular member 1 is made of metal in the shape of a pipe, and a flange portion 11 serving as a mounting seat when mounted on the vehicle body is provided on the upper end thereof so as to project radially outward. As shown in FIGS. 3 to 5, the outer tubular metal member 2 is formed into a substantially cylindrical shape by pressing a metal tube, and has an outward flange 21 extending outward in the radial direction at the upper end thereof. Have,
At its lower end, an inward flange 22 extending radially inward is provided.
Have. Then, arcuate protrusions 23, 23 extending inward in the radial direction from the tip of the inward flange 22 are provided at positions corresponding to the vehicle front-rear direction of the inward flange 22. Bent portions 24, 24 that are bent at a substantially right angle and extend upward are formed at the tips of the 23, 23. In addition, a reinforcing rib 25 formed by cutting is provided from the diagonally lower side of the inner circumference at the corner where the overhanging portion 23 and the bent portion 24 intersect.

The rubber elastic body 3 is made of natural rubber having a predetermined rubber hardness. This rubber elastic body 3 is used for the inner tube fitting 1
The outer peripheral surface and the inner peripheral surface of the outer tubular metal member 2 are fixed to each other by vulcanization adhesion and are formed into a substantially cylindrical shape having a predetermined wall thickness. At the position corresponding to the vehicle front-rear direction of the rubber elastic body 3, curls 31, 31 extending in an arc shape along the circumferential direction and penetrating in the axial direction are provided inside the bent portions 24, 24 of the outer tubular metal fitting 2. Has been formed. On the outer peripheral edge of the upper end of the rubber elastic body 3, a ring-shaped stopper portion 32 fixed to the upper surface of the outward flange 21 and protruding in the axial direction is integrally formed with the rubber elastic body 3.

The rubber stopper 4 is formed in a substantially ring shape so as to protrude axially from the lower surface of the inward flange 22. The rubber stopper 4 is integrally formed with the rubber elastic body 3 including the inward flange 22, the protruding portion 23, and the bent portion 24 of the outer tubular metal fitting 2 inside. A thick-walled portion 41 is formed at a portion of the rubber stopper 4 corresponding to the overhanging portion 23 so as to bulge inward in the radial direction more than other portions to have a thick-walled shape.

As shown in FIG. 6, the member mount of the present embodiment constructed as described above has a collar portion 11 of the inner tubular metal member 1.
Is fixed to the lower surface of the vehicle body 5 with bolts (not shown) or the like and is attached substantially vertically, and a rebound stopper metal fitting 6 is attached to the lower end thereof with bolts 61 or the like. Further, the outer tubular metal member 2 is press-fitted to the sub-frame member 7 of the suspension in a state where the outward flange 21 is in contact with the outer frame member 2 and is attached substantially vertically.

As a result, vibrations in the front-rear direction, the left-right direction, and the up-down direction of the vehicle, which are transmitted from the wheel (outer cylinder fitting 2) side, are rubber elastically interposed between the inner cylinder fitting 1 and the outer cylinder fitting 2. The body 3 is elastically deformed to be relaxed. Further, when excessive vertical vibration is input from the wheel side, the stopper portion 32 comes into contact with the lower surface of the vehicle body 5 and the rubber stopper 4 comes into contact with the rebound stopper metal fitting 6, so that the rubber elastic body 3 is excessively deformed. Suppressed.

At this time, the inward flange 2 of the outer tube fitting 2
2 is provided with an overhanging portion 23, and the thickened portion 41 of the rubber stopper 4 is supported by the supporting surface which is increased by that amount, so that a good stopper function is exerted for a larger input. . Further, even if a large input is applied to the rubber stopper 4, the surface pressure is reduced, so that the inward flange 22 is unlikely to be deformed and the rubber stopper 4 maintains a good stopper function exhibiting state for a long period of time.

Since the bent portion 24 is provided at the tip of the overhang portion 23 and the reinforcing rib 25 is provided between the overhang portion 23 and the bent portion 24, the rigidity of the overhang portion 23 is improved. The deformation of the inward flange 22 is further suppressed. Further, since the edge is not arranged radially inward by having the bent portion 24, even if a large input in the front-rear direction of the vehicle acts, the occurrence of disconnection of the rubber elastic body 2 is avoided.

As described above, in the member mount of this embodiment, the overhanging portion 23 extending radially inward from the tip of the inward flange 22 is located at a position corresponding to the front-rear direction of the vehicle of the outer tubular fitting 2. Since the bent portion 24 that extends upward from the tip of the overhanging portion 23 is provided, the stopper characteristics of the rubber stopper 4 can be improved and the durability can be improved.

Further, in this embodiment, since the reinforcing rib 25 is provided between the overhanging portion 23 and the bent portion 24, the rigidity of the overhanging portion 23 is further enhanced, and the durability is further improved. be able to. In addition, the inward flange 22 of the outer tube fitting 2
The size and the like of the overhanging portion 23 and the bent portion 24 provided on the
It can be appropriately set according to the conditions of other components. Further, the reinforcing rib 25 provided between the overhanging portion 23 and the bent portion 24 is not limited to the case of the embodiment, and the overhanging portion 23 is not limited thereto.
A member for connecting the bent portion 24 and the bent portion 24 may be combined and provided.

[0023]

According to the member mount of the present invention, an overhanging portion that extends radially inward from the tip of the inward flange is provided at a position of the outer tubular fitting corresponding to the front-rear direction of the vehicle, and this overhang. Since it has a bent portion that extends upward from the tip of the section, it can exert a good stopper function of the rubber stopper for a larger input, and also does not deform the inward flange or cut the rubber elastic body. It is possible to avoid and maintain a good stopper function exhibiting state of the rubber stopper for a long period of time. Therefore, the stopper characteristics of the rubber stopper can be improved and the durability can be improved.

Further, by providing the reinforcing rib between the overhanging portion and the bent portion, the rigidity of the overhanging portion can be further enhanced and the durability can be further improved.

[Brief description of drawings]

FIG. 1 relates to a member mount according to an embodiment, and is II of FIG.
FIG.

FIG. 2 is a bottom view of the member mount according to the embodiment.

FIG. 3 is a plan view of an outer cylinder fitting according to the embodiment.

4 is a cross-sectional view taken along line IV-IV of FIG. 3, relating to the outer cylinder fitting of the embodiment.

5 is a cross-sectional view taken along the line VV of FIG. 3, relating to the outer cylinder fitting of the embodiment.

FIG. 6 is a cross-sectional view showing a state in which the member mount according to the embodiment is assembled to the suspension.

FIG. 7 is a schematic plan view of a general suspension.

FIG. 8 is a plan view of a conventional member mount.

9 is a sectional view taken along the line IX-IX in FIG. 8 of the conventional member mount.

FIG. 10 is a cross-sectional view showing a state in which a conventional member mount is attached to a suspension.

[Explanation of symbols]

1 ... Inner tube fitting 2 ... Outer tube fitting 3 ... Rubber elastic body
4 ... Rubber stopper 21 ... Outward flange 22 ... Inward flange 2
3 ... Overhang 24 ... Bend 31 ... Curly 32 ... Stopper
41 ... Thick part

Claims (2)

[Claims] 1. An inner tubular metal fitting, the upper end of which is attached substantially vertically to a vehicle body, and an inward flange that is coaxially arranged outside the inner tubular metal fitting and that extends radially inward at the lower end thereof. An outer cylindrical metal member that is attached substantially vertically to the inner member, a rubber elastic body interposed between the outer cylindrical metal member and the inner cylindrical metal member, and an inward flange that projects axially from the lower surface of the inward flange. In a member mount including a rubber stopper integrally formed with the rubber elastic body, the inward flange of the outer tubular metal member is provided at a position corresponding to a front-rear direction of the vehicle, and A member mount having an overhanging portion extending radially inward from the tip of the flange, and a bent portion extending upward from the tip of the overhanging portion. 2. The member mount according to claim 1, wherein a reinforcing rib is provided between the protruding portion and the bent portion.