JP2001263418A - Support device having mass damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device having a mass damper which is unnecessary for the adhesion of a mass member, small in the number of part items, and low-cost of manufacture. SOLUTION: In the direction of the major axis of an elliptically annular body 12 of a support member 11 which is an annular body formed of an elastic material of a predetermined thickness of the support device 10 having the mass damper, both inner ends form fitting portions 13, 14 which are swollen in a substantially semi-circular shape in the facing direction, and fitting holes 13a, 14a piercing in the thickness direction are made in the center of the fitting portions 13, 14. Further, in the direction of the minor diameter of the support member, both inner ends form fitting portions 15, 16 which are swollen in a substantially semi-circular shape in the facing direction, and fitting holes 15a, 16a piecing in the thickness direction are made in the center. A U-shaped bar- like mass member 20 is press-fitted in the fitting holes and fixed thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support device with a mass damper, and more particularly to a support device with a mass damper suitable for suspending and supporting an exhaust pipe of an automobile and suppressing transmission of vibration to a vehicle body.

[0002]

2. Description of the Related Art Conventionally, as a support device with a mass damper of this type, for example, as shown in Japanese Utility Model Publication No. 3-55777, a support member made of a rubber elastic body having a ring shape is provided with symmetrical portions. In a support device having first and second attachment portions to which the first and second members are attached, the support member connecting the first and second attachment portions is provided at substantially the center of the left and right arm portions of the support member, respectively. It is known that damper masses are independently and integrally attached to each other, and each damper mass is configured to have a trapezoidal or triangular shape tapering toward a substantially central portion of the ring shape of the support member. .
As described above, the damper masses are independently and integrally attached to substantially the center positions of the left and right arm portions of the support member connecting the first and second attachment portions, respectively.
Vibration transmission between the first and second members can be blocked in a wide frequency band.

[0003] However, this support device with a mass damper has a problem that since the mass metal fitting is fixed by bonding, a process for bonding is time-consuming and therefore expensive. Further, in the support device with the mass damper, a tensile strain is always applied to a bonding portion between the mass metal fitting and the rubber elastic body, and there is a problem that the reliability of the bonding portion becomes insufficient.

On the other hand, another support device with a mass damper has a first mounting portion for mounting a vehicle body and a second mounting portion for suspending an exhaust pipe, as shown in Japanese Utility Model Publication No. 7-32997. A support member formed of an elastic material having an engagement hole at a substantially central portion of an articulation portion connecting the first attachment portion and the second attachment portion, and a connecting portion inserted through the engagement hole and attached without bonding. There is known a mass member having a pair of side members integrally provided on both sides of a connecting portion and located on both sides of the support member. However, this support device with a mass damper has a mass member having a connecting portion and a pair of side portions attached to both sides thereof, so that the number of parts increases, and it takes time to fix the connecting portion and the side portion, and the manufacturing time is increased. There is a problem that the manufacturing cost becomes expensive because of the lengthening.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a support device with a mass damper which does not require a mass member bonding process, has a small number of parts, and can be manufactured at low cost. With the goal.

[0006]

In order to achieve the above object, a structural feature of the invention according to the first aspect is that an annular support member made of an elastic material is provided with a first support member at a position symmetrical to each other.
And a support device provided with first and second mounting holes penetrating in a thickness direction to which a second mating member is mounted, wherein the support member is provided at a position substantially orthogonal to the first and second mounting holes of the support member. First and second members penetrating the member in the thickness direction
Is provided, and a U-shaped mass member is fixed to the first and second mounting holes by press-fitting respective straight portions of the mass member.

In the first aspect of the present invention, the first and second support members penetrate in the thickness direction at positions substantially orthogonal to the first and second mounting holes of the annular support member. Since two mounting holes may be provided and the U-shaped mass member may be fixed to the first and second mounting holes by press-fitting, the bonding process of the mass member can be omitted, and
The operation can be simplified only by the single press-fitting operation, and the manufacturing cost of the support device with the mass damper can be reduced. Further, since the mass member is not bonded but is press-fitted, the influence when a tensile stress is applied to the support member made of the elastic material can be reduced. Further, since the mass member has a small number of parts, the cost of parts does not increase. Further, in the support device with the mass damper according to the first aspect, the tip of each straight portion of the mass member may be protruded from the support member, and a retaining protrusion may be provided on the protruding side.

Further, the structural feature of the invention according to claim 3 is that an annular support member made of an elastic material penetrates in a thickness direction in which the first and second mating members are attached to symmetrical positions. A first and a second mounting hole, wherein the first and second mounting holes penetrate the supporting member at a position substantially orthogonal to the first and second mounting holes in the thickness direction. A mounting hole is provided, and a rod-shaped mass member is fixed to each of the first and second mounting holes by press-fitting.

According to the third aspect of the present invention, the first and second annular support members are provided.
Since the bar-shaped mass members may be fixed to the mounting holes by press-fitting, the bonding process of the mass members can be omitted, and the work can be simplified only by the press-fitting operation. Further, since the mass member is not bonded but is press-fitted, the influence when a tensile stress is applied to the support member made of the elastic material can be reduced. Further, since the mass member has a small number of parts, the cost of parts does not increase. Further, in the support device with the mass damper according to the third aspect, the mass member can be protruded from both sides of the support member, and a retaining projection can be provided on each of both protruding sides.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a support device with a mass damper for supporting an exhaust pipe of an automobile according to an embodiment. It is shown by the figure and the II-II line direction sectional drawing. The support device 10 with the mass damper is a substantially elliptical annular support member 11 made of a rubber elastic body having a predetermined thickness.
And a substantially U-shaped mass member 20.

The support member 11 is, as shown in FIG.
In the major axis direction of the substantially elliptical ring-shaped main body 12, the mounting portions 13, 1 whose inner ends bulge in a substantially semicircular shape in opposite directions to each other.
The mounting holes 13a and 14a are provided at the centers of the mounting portions 13 and 14 in the thickness direction. Further, in the short diameter direction of the main body 12 of the support member 11, the mounting portions 15, the insides of both ends of which are bulged in a substantially semicircular shape in the opposite direction to each other,
The mounting holes 15a, 16a are provided at the centers of the mounting portions 15, 16 in the thickness direction.

As shown in FIG. 4, the mass member 20 is formed by bending and pressing a metal round bar, and a pair of straight portions 21 and both straight portions 21 are integrally formed at one end. It is a U-shape consisting of an arc portion 22 to be connected,
The other end sides of both straight portions 21 are retaining protrusions 23 whose axial position cross sections projecting radially outward have a mountain shape. The straight portions 21 of the mass member 20 are pressed into the mounting holes 15a and 16a of the support member 11, and the ends of the straight portions 21 of the mass member 20 protrude from the support member 11, as shown in FIGS. It is formed as a support device 10 with a mass damper as shown. Here, the retaining projection 2 is attached to the mass member 20.
3, the projections 23 are locked in the mounting holes 15a, 16a.
It is possible to prevent slippage from zero.

The support device 10 with a mass damper includes:
As shown in FIG. 5, a pin-shaped bracket 31 on the vehicle body side is inserted and fixed in one mounting hole 13a, and a pin-shaped bracket 32 for holding an exhaust pipe is inserted and fixed in the other mounting hole 14a. The exhaust pipe side is elastically connected to the vehicle body side. Thereby, the support device 10 with the mass damper
Is designed to suppress the transmission of vibration from the exhaust pipe side to the vehicle body side by a vibration damping action.

In the embodiment configured as described above, the mounting portions 13, 1 on both sides in the major diameter direction of the support member 11 are provided.
4, a pair of mounting holes 15a, 16a penetrating in the thickness direction similar to the mounting holes 13a, 14a are provided at both positions in the short diameter direction orthogonal to the pair of mounting holes 13a, 14a, and the mounting holes 15a, 16a are provided in the mounting holes 15a, 16a. The U-shaped mass member 20 may be fixed at the straight portion 21 by press fitting. Therefore, the bonding process of the mass member 20 can be omitted, and the mass member 20 can be mounted on the support member 11 by only one press-fitting, so that the mounting operation can be simplified and the mass damper is provided. The manufacturing cost of the support device can be reduced. In addition, since the mass member 20 is not bonded to the support member 11 but is fixed by press-fitting, the influence when a tensile stress is applied to the support member 11 can be reduced, and the reliability of the attachment of the mass member 20 can be reduced. Can be enhanced. Further, the mass member 20 is
Since the number of parts is very small and the number of parts is very small, the cost of parts can be reduced.

The length of the straight portion 21 of the mass member 20 can be further increased if necessary. In this case, in order to prevent the mass member 20 from moving in the axial direction, the support member 11 is required. A similar projection may be provided on the opposite side of the retaining projection 23 with the.

Next, another embodiment will be described.
In this embodiment, as shown in FIGS. 6 and 7, the mass member of the support device 40 with the mass damper is a pair of straight mass members 41 made of a metal round bar. The mass member 41 is provided with retaining projections 42 at both ends. The support member 11 is the same as that shown in the above embodiment. The pair of mass members 41 are
Of the mass member 41 to protrude from both sides of the support member 11 to form a support device 40 with a mass damper.

In the support device 40 having the mass damper, a pair of mass members 4 are provided in both the mounting holes 15a and 16a.
1 can be fixed by press-fitting, so that the bonding process of the mass member 41 can be omitted, and the mass member 41 can be attached to the support member 11 only by two press-fits. It can be simplified and the manufacturing cost of the support device with the mass damper can be reduced. Further, since the mass member 41 is not bonded to the support member 11 but is press-fitted, the influence when a tensile stress is applied to the support member 11 can be reduced, and the reliability of the attachment of the mass member can be improved. it can. Further, since the mass member 41 is composed of two parts and the number of parts is very small, the cost of parts can be reduced.

In each of the above embodiments, the support member has an oval ring shape and a hollow inside, but instead, the support members 15 and 16 may be connected by a rubber elastic body. In addition, each of the above embodiments is an example,
Various modifications can be made without departing from the spirit of the present invention.

[0019]

According to the first aspect of the present invention, the U-shaped mass member can be easily attached to the support member, the number of the mass member is small, and a tensile stress is applied to the support member. Since the influence of the operation can be reduced, a highly reliable support device can be provided at low cost. In addition, the tip of each straight part of the mass member protrudes from the support member, and a retaining projection is provided on the protruding side to prevent the mass member fixed to the support member only by press-fitting from falling off from the support member. (The effect of the invention of claim 2).

Further, even if the mass member is formed as a pair of rods,
The same effect as that of the character shape can be obtained. In this case, the mass member is protruded from both sides of the support member, and retaining projections are provided on both protruding sides of the mass member, so that the mass member fixed to the support member only by press-fitting is dropped from the support member. Can be prevented (claim 3,
Effect of the invention of 4).

[Brief description of the drawings]

FIG. 1 is a front view showing a support device with a mass damper according to an embodiment of the present invention.

FIG. 2 shows the support device with mass damper shown in FIG.
It is sectional drawing in the II line direction.

FIG. 3 is a front view showing a support member.

FIG. 4 is a plan view showing a mass member.

FIG. 5 is an explanatory view schematically showing a use state of a support device with a mass damper.

FIG. 6 is a front view showing a support device with a mass damper according to another embodiment.

FIG. 7 is a view of the support device with mass damper shown in FIG. 6;
It is sectional drawing of the I-VII line direction.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Support device with a mass damper, 11 ... Support member, 12 ... Main body, 13,14 ... Mounting part, 13a, 14a
... Mounting holes, 15, 16 ... Mounting portions, 15a, 16a ... Mounting holes, 20: Mass member, 21: Straight portion, 22 ... Circular portion, 2
Reference numeral 3: retaining projection, 40: support device with mass damper, 41: mass member, 42: retaining projection.

Claims (4)

[Claims] 1. A support device having first and second mounting holes penetrating in a thickness direction for mounting first and second mating members at symmetric positions of an annular support member made of an elastic material. Wherein first and second mounting holes are provided at positions substantially orthogonal to the first and second mounting holes of the support member, and the first and second mounting holes penetrate the support member in a thickness direction. U in the mounting hole of
A support device with a mass damper, wherein a U-shaped mass member is fixed by press-fitting each straight portion of the mass member. 2. The support device with a mass damper according to claim 1, wherein a tip of each straight portion of the mass member protrudes from the support member, and a retaining projection is provided on a protruding side thereof. . 3. A support device having first and second mounting holes penetrating in a thickness direction for mounting first and second mating members at symmetric positions of an annular support member made of an elastic material. Wherein first and second mounting holes are provided at positions substantially orthogonal to the first and second mounting holes of the support member, and the first and second mounting holes penetrate the support member in a thickness direction. A support device with a mass damper, wherein a rod-shaped mass member is fixed to each of the mounting holes by press-fitting. 4. The device according to claim 3, wherein the mass member is protruded from both sides of the support member, and retaining projections are provided on both protruding sides of the mass member.
3. A support device with a mass damper according to item 1.