JP2002070906A - Member mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member mount that can prevent stagnation of water in a space portion and thus a reduction in strength and durability due to corrosion. SOLUTION: The member mount comprises an inner cylinder member 1 provided with a flange portion 12 at one end and fitted on a mounting pin 71 on a vehicle body 70, a first outer cylinder member 2 disposed coaxially outside the end of the inner cylinder member 1 at the flange portion 12 side and mounted in a mounting hole 81 of a member collar 80, a first rubber elastic body 3 interposed between the first outer cylinder member 2 and the inner cylinder member 1, a ring base 4 fitted on the mounting pin 71 and joined to the end face of the inner cylinder member 1 opposite to the flange portion 12, a second outer cylinder member 5 disposed coaxially outside the end of the inner cylinder member 1 opposite to the flange portion 12 and mounted in the mounting hole 81, and a second rubber elastic body 6 interposed between the second outer cylinder member 5 and the ring base 4. The ring base 4 has drain passages 42 connecting an internally formed space portion S and the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member mount interposed between a member for supporting wheels and a vehicle body in a vehicle suspension, and connecting the two members with vibration isolation.

[0002]

2. Description of the Related Art FIG. 4 shows a known member mount used in a vehicle suspension. This member mount has an inner cylindrical member 101 having a shaft hole 113 fitted into a mounting pin 71 provided on a vehicle body 70 and a ring-shaped flange portion 112 formed at one end in the axial direction and projecting radially outward. And the inner cylindrical member 10
The first outer cylinder member 102 is coaxially disposed outside the end of the first flange portion 112 side, and is press-fitted into a mounting hole 81 provided in the member collar 80; the first outer cylinder member 102 and the inner cylinder member 101. A first rubber elastic body 103 formed in a substantially cylindrical shape and interposed between the first rubber elastic body 103 and the mounting pin 71;
A ring substrate 104 having a central hole 141 fitted into the inner cylindrical member 101 and coaxially arranged and joined to an end surface of the inner cylindrical member 101 opposite to the flange 112, and a distance between the ring substrate 104 and the inner cylindrical member 101 A second coaxially disposed outside the other end of the inner cylinder member 101 and mounted in the mounting hole 81
Outer cylinder member 105, second outer cylinder member 105 and ring substrate 1
And a second rubber elastic body 106 which is formed in a substantially cylindrical shape and intervenes between the second rubber elastic body 106 and the second rubber elastic body 106.

[0003] This member mount includes an inner cylinder member 101,
A first component in which the first outer cylinder member 102 and the first rubber elastic body 103 are integrally connected; a ring substrate 104;
The outer cylinder member 105 and the second rubber elastic body 106 are formed so as to be separated from a second component part which is integrally connected, and assembled between the vehicle body 70 and the member collar 80 as follows. Mounted.

First, a first outer cylindrical member 101 of a first component part
Is pressed into one end of a mounting hole 81 provided in the member collar 80, and the shaft hole 113 of the inner cylinder member 101 is fitted to a mounting pin 71 provided in the vehicle body 70. Next, the second
The center hole 141 of the component ring substrate 104 is fitted to the mounting pin 71, and the second outer cylinder member 106 is pressed into the other end of the mounting hole 81 of the member collar 80. In this state, the nut 72 is fastened to the threaded portion at the tip of the mounting pin 71, so that the ring substrate 104 is assembled in a state of contacting the end surface of the inner cylindrical member 101.

When vibration is applied to the member mount thus mounted, the first and second rubber elastic members 10
The shock is absorbed by the elastic deformation of 3, 106, and the vibration is effectively attenuated.

[0006]

By the way, when the member mount is attached as described above, the first outer cylindrical member 102 and the first rubber elastic body 103 on the first component part and the second rubber member 103 on the second component part. Ring substrate 104, second outer cylinder member 105
And the second rubber elastic body 106 are arranged at a distance from each other in the axial direction, so that a cylindrical space S
Is formed. Although this space S is a closed space, when water invades into the space S through a small gap or the like and accumulates, the inner cylindrical member 101 made of metal whose first surface is exposed to the space S or the first In addition, rust is generated on the second outer cylinder members 102 and 105, the member collar 80, and the like, so that the rust is easily corroded, which adversely affects the strength and durability.

The cause of the accumulation of water in the space S is that when the first and second rubber elastic bodies 103 and 106 are elastically deformed, a piston effect phenomenon occurs and the first and second outer cylindrical members 102 are formed. , 105 and the member collar 80, water may be sucked through a slight gap, or dew may be formed due to a change in environmental temperature.

The present invention has been devised in view of the above situation, and has an object to provide a member mount which prevents water from accumulating in a space and prevents a decrease in strength and durability due to corrosion. It should be a task to be done.

[0009]

According to a first aspect of the present invention, there is provided a member mount having a ring-shaped flange portion at one end, and fitted to a mounting pin provided on one of a vehicle body and a member. An inner cylinder member to be combined, and a first outer cylinder disposed coaxially outside an end of the inner cylinder member on the flange side side and mounted in a mounting hole provided in the other of the vehicle body and the member A member, a substantially cylindrical first rubber elastic body interposed between the first outer cylinder member and the inner cylinder member and integrally connecting the first outer cylinder member and the inner cylinder member, and a central hole fitted to the mounting pin. A ring substrate joined to and disposed on an end surface of the inner cylinder member opposite to the flange portion, and an outer side of an end of the inner cylinder member opposite to the flange portion at a distance from the ring substrate. A second outer cylinder member coaxially disposed in the mounting hole and mounted in the mounting hole; A substantially cylindrical second rubber elastic body interposed between the material and the ring substrate and integrally connecting the two, and the ring substrate includes the ring substrate, the first outer cylindrical member, and the second rubber elastic body. (1) Means having a water drain passage for communicating a space formed between the rubber elastic body and the outside is adopted.

In the member mount of the present invention, since the water drain passage is provided in the ring substrate, a space formed between the ring substrate, the first outer cylinder member and the first rubber elastic body is drained. It is communicated with the outside by the passage. Thus, the water that has entered the space is discharged from the space through the drain passage to the outside, and does not accumulate in the space.

Therefore, according to the member mount of the present invention, since the water drain passage is provided in the ring substrate, it is possible to prevent water from accumulating in the space, and the surface is exposed to the space. Rust can be prevented from being generated on the metal member, and deterioration in strength and durability due to corrosion can be prevented.

In the present invention, if the drain passage provided in the ring substrate is a portion that is exposed to a space formed between the ring substrate and the first outer cylindrical member and the first rubber elastic body, the drainage passage is provided. It may be provided in any part of. The number of drain passages may be one or two or more, but it is preferable to provide a plurality of drain passages in order to efficiently discharge water in the space. Further, the shape of the drain passage can be freely selected.

If the drain passage is formed so as to be connected to the center hole of the ring substrate as in the second aspect of the present invention, it is necessary to carry out one press of the ring substrate. Since the drain passage can be formed simultaneously with the center hole by the press work, the drain passage can be easily formed without increasing the number of work steps and costs.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a state in which the member mount according to this embodiment is mounted between a vehicle body and a member collar, and FIG. 2 is a second view of the member mount according to this embodiment.
FIG. 3 is a plan view of the components, and FIG. 3 is a sectional view taken along line III-III in FIG.

As shown in FIG. 1, the member mount according to the present embodiment is mounted between a vehicle body 70 and a member collar 80.
A first component comprising the first outer cylinder member 2 and the first rubber elastic body 3 and a second component comprising the integrally formed ring substrate 4, the second outer cylinder member 5 and the second rubber elastic body 6 It is composed of In this case, at a predetermined portion of the vehicle body 70,
Mounting pin 71 into which inner cylinder member 1 and ring substrate 4 are fitted
Are projected downward, and the member collar 80 is provided with a mounting hole 81 into which the first and second outer cylindrical members 2 and 5 are press-fitted.

The inner cylindrical member 1 of the first component has a long cylindrical body 11 having a substantially constant diameter and thickness.
And a ring-shaped flange portion 12 protruding radially outward from one end of the main body portion 11. A shaft hole 13 is formed in the main body 11 so as to penetrate in the axial direction and fit into a mounting pin 71 provided on the vehicle body 70.

The first outer cylindrical member 2 comprises a first cylindrical portion 21 formed in a short cylindrical shape, and a ring-shaped first flange 22 projecting radially outward from one end of the first cylindrical portion 21. First
The inner diameter of the tubular portion 21 is larger than the outer diameter of the main body 11 of the inner tubular member 1. The first outer cylinder member 2 is disposed coaxially outside the flange 12 side end of the main body 11 in a state of facing the main body 11 and the flange 12 of the inner cylinder 1 at a predetermined distance. ing. In the first outer cylinder member 2, the first cylinder portion 21 is press-fitted into a mounting hole 81 provided in the member collar 80.

The first rubber elastic body 3 includes the inner cylindrical member 1 and the first
The rubber material is formed into a substantially cylindrical shape by integrally vulcanizing with the outer cylinder member 2, whereby the inner cylinder member 1, the first outer cylinder member 2, and the first rubber elastic body 3 are integrated. One component is formed. This first rubber elastic body 3
Are the outer peripheral surface of the main body 11 of the inner cylindrical member 1 and the flange 1
2 and the inner peripheral surface of the first cylindrical portion 21 of the first outer cylindrical member 2 and the outer surface of the first flange 22 are vulcanized and adhered to each other so that the inner cylindrical member 1 and the first outer cylindrical member 2 It is interposed between them and connects them together.

As shown in FIGS. 2 and 3, the ring substrate 4 of the second component is formed in a ring shape by pressing a metal plate.
Of the flange portion 12 is slightly larger than the outer diameter of the flange portion 12. A circular central hole 41 penetrating in the thickness direction is formed in the center of the ring substrate 4. The central hole 41 is a portion to be fitted to the mounting pin 71 of the vehicle body 70, and is formed to have substantially the same size as the shaft hole 13 of the inner cylinder member 1.

Two drain passages 4 penetrating in the thickness direction are provided at axially symmetric positions on the inner peripheral end of the ring substrate 4.
2, 42 are provided. The drain passages 42, 42
Is formed to extend in a centrifugal direction from the inner peripheral surface of the ring substrate 4 and to reach a substantially center between the inner peripheral surface and the outer peripheral surface. When the ring substrate 4 is formed by press working, the drain holes 42, 42 are formed in the central hole 41 by one pressing operation.
It is formed at the same time in a state of being connected to.

This ring substrate 4 is, as shown in FIG.
When fitted to the mounting pin 71 and integrally assembled with the first component, it is joined to the end surface of the inner cylinder member 1 on the side opposite to the flange portion 12 and arranged coaxially with the inner cylinder member 1. At this time, the drain passage 4 provided in the ring substrate 4
2 and 42, approximately half of the outer side in the centrifugal direction is the inner cylindrical member 1.
Are located outside the outer peripheral surface of the main body 11.

The second outer cylindrical member 5 comprises a second cylindrical portion 51 formed in a short cylindrical shape, and a ring-shaped second flange 52 projecting radially outward from one end of the second cylindrical portion 51. Second
The inner diameter of the cylindrical portion 51 is larger than the outer diameter of the main body 11 of the inner cylindrical member 1 and is substantially the same as the inner diameter of the first cylindrical portion 21 of the first outer cylindrical member 1. The second outer cylinder member 5 is disposed in a state where the second flange 52 faces the ring substrate 4 at a predetermined distance in the axial direction, and when the second outer cylinder member 5 is integrally assembled with the first component, the second flange 52 of the main body 11 is formed. It is arranged coaxially outside the end opposite to the part 12. In the second outer cylinder member 5, the second cylinder portion 51 is press-fitted into a mounting hole 81 provided in the member collar 80.

The second rubber elastic body 6 is formed into a substantially cylindrical shape by integrally vulcanizing and molding a rubber material together with the ring substrate 4 and the second outer cylinder member 5, whereby the ring substrate 4 and the second outer cylindrical member 5 are formed. A second component part in which the cylindrical member 5 and the second rubber elastic body 6 are integrated is formed. This second rubber elastic body 6
Are vulcanized and bonded to the outer peripheral end of one surface of the ring substrate 4, the inner peripheral surface of the second cylindrical portion 51 of the second outer cylindrical member 5, and the outer surface of the second flange 52, and It is interposed between the cylindrical member 5 and connects the two integrally. The second rubber elastic body 6 is provided on the main body 11 of the inner cylindrical member 1.
Are formed so as to have an inner diameter larger than the outer diameter of the inner rubber member 6 and the outer peripheral surface of the inner cylindrical member 1 when the first component and the second component are assembled. And a gap of a predetermined size is formed.

In the member mount of the present embodiment configured as described above, the first component and the second component are assembled as follows and attached between the vehicle body 70 and the member collar 80.

First, the first cylindrical portion 21 of the first outer cylindrical member 2 of the first component is pressed into one end side (upper side) of the mounting hole 81 of the member collar 80, and the shaft hole 13 of the inner cylindrical member 1 is pressed.
Is fitted to the mounting pin 71 of the vehicle body 70. Next, the central hole 41 of the ring substrate 4 of the second component is fitted to the mounting pin 71, and the second cylindrical portion 51 of the second outer cylindrical member 5 is connected to the other end side of the mounting hole 81 of the member collar 80 ( (Lower side). In this state, the nut 72 is fastened to the screw portion at the tip of the mounting pin 71, so that the ring substrate 4
Is assembled in a state of contacting the lower end surface of the.

Thus, the first outer cylinder member 2 and the first rubber elastic body 3 on the first component side and the ring substrate 4, the second outer cylinder member 5 and the second rubber elastic body 6 on the second component side are provided. A substantially cylindrical space portion S defined by the outer peripheral surface of the inner cylindrical member 1 and the peripheral surface of the mounting hole 81 is formed between the inner cylindrical member 1 and the inner cylindrical member 1. The space S is provided with the drain passages 42, 4 provided in the ring substrate 4.
2 communicates with the outside on the back side (lower side) of the ring substrate 4.

The member mount of the present embodiment, which is mounted and used as described above, is provided with the water drain passages 42, 42 in the ring substrate 4, so that the ring substrate 4 and the first outer cylindrical member 2 are provided. A space S formed between the first rubber elastic body 3 and the first rubber elastic body 3 communicates with the outside. for that reason,
Water that has entered the space S from the small gaps and the drain passages 42 and 42 and water droplets that have condensed in the space S due to changes in environmental temperature are effectively discharged to the outside through the drain passages 42 and 42. And does not accumulate in the space S.

Since the drain passages 42, 42 are provided in the ring substrate 4 located below the space S, the water in the space S is smoothly drained by gravity.
Easy to be discharged from. During the running of the vehicle, vibrations input to the member mount and the first and second rubber elastic bodies 3,
Due to the piston effect phenomenon that occurs with the elastic deformation of No. 6, it can be further expected that water discharged from the space S to the outside through the water drain passages 42, 42 is promoted.

As described above, according to the member mount of this embodiment, since the water drain passages 42, 42 for communicating the space S with the outside are provided in the ring substrate 4, the water in the space S is provided. Can be effectively discharged to the outside, and the accumulation of water in the space S can be prevented. Accordingly, it is possible to prevent rust from being generated on the metal member whose surface is exposed in the space S, and to prevent a decrease in strength and durability due to corrosion.

In the member mount of this embodiment, since the drain passages 42 are provided in the ring substrate 4 located below the space S, the water in the space S is subjected to the action of gravity. And can be effectively discharged to the outside.

Further, the drainage passages 42, 42 of this embodiment
Is formed so as to be connected to the central hole 41 of the ring substrate 4, and thus can be formed simultaneously with the central hole 41 by one press operation when the ring substrate 4 is manufactured by press working. The drain passages 42, 42 can be easily formed without increasing the number of man-hours and costs.

The water drain passages 42 are not limited to those of the present embodiment, but can be variously changed in shape and number. For example, a through hole formed so as not to be connected to the central hole 41 in a portion exposed to the space S of the ring substrate 4 can be adopted as a drain passage.

In the above-described embodiment, the mounting pin 71 into which the inner cylinder member 1 and the ring substrate 4 are fitted is provided on the vehicle body 70, and the first and second outer cylinder members 2, 5 are press-fitted. Although the hole 81 is provided in the member collar 80, the mounting pin 71 and the mounting hole 81 may be provided in the opposite member.

The components of the member mount of the above embodiment can be appropriately changed in design without departing from the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which a member mount according to an embodiment of the present invention is mounted between a vehicle body and a member collar.

FIG. 2 is a second view of the member mount according to the embodiment of the present invention.
It is a top view of a component.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view showing a state in which a conventional member mount is mounted between a vehicle body and a member collar.

[Explanation of symbols]

1, 101: inner cylindrical member 2, 102: first outer cylindrical member 3, 103: first rubber elastic body 4, 104: ring substrate 5, 105: second outer cylindrical member 6, 106: second rubber elastic body 11 … Main body 12, 112… Flange 1
3, 113: shaft hole 21: first cylindrical portion 22: first flange 41,
141 ... Center hole 42 ... Water drain passage 51 ... Second cylindrical part 52 ... Second flange 70 ... Car body 71 ... Mounting pin 72 ... Nut 80 ... Member collar 81 ... Mounting hole S ... Space part

Claims (2)

[Claims] 1. An inner cylinder member having a ring-shaped flange at one end and fitted to a mounting pin provided on one of a vehicle body and a member, and an end of the inner cylinder member on the flange portion side. A first outer cylinder member disposed coaxially outside and mounted in a mounting hole provided in the other of the vehicle body and the member; and a first outer cylinder member interposed between the first outer cylinder member and the inner cylinder member. A first rubber elastic body having a substantially cylindrical shape that integrally connects the first and second elastic members, and a central hole that is fitted to the mounting pin, and is arranged so as to be joined to an end surface of the inner cylindrical member opposite to the flange portion. A second outer cylinder member that is coaxially disposed outside the end of the inner cylinder member opposite to the flange portion at a distance from the ring substrate and is mounted in the mounting hole; A substantially cylindrical second rubber interposed between the second outer cylinder member and the ring substrate and integrally connecting the two. The ring substrate has a water drain passage for communicating a space formed between the ring substrate and the first outer cylinder member and the first rubber elastic body with the outside. A member mount. 2. The member mount according to claim 1, wherein the drain passage is formed so as to be connected to the central hole of the ring substrate.