JP2012137155A - Vibration damping device with stopper rubber part and method of manufacturing same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration damping device having an inner stopper rubber part arranged in a storing space located inside a body rubber part, and effectively reducing a cost while maintaining the conventional vibration proof performance.SOLUTION: In an engine mount 10, an inner stopper rubber part 20 is arranged in a storing space 18 which is located inside a body rubber part 16 that elastically connects an upper fitting bracket 12 to a lower fitting bracket 14. The inner stopper rubber part 20 is divided into four sections along circumferential direction to provide stopper rubber pieces 20-1, 20-2, 20-3, and 20-4. They are integrally vulcanized together with a thin-wall hinge part 57, in vulcanizing the body rubber part 16, so as to continuously extend from the body rubber part 16 by way of the thin-wall hinge part 57 and show different faces from when the inner stopper rubber part 20 is formed. Then the stopper rubber pieces 20-1 to 20-4 are folded back at the hinge part 57, to constitute the inner stopper rubber part 20 along circumferential direction within the storing space 18.

Description

  The present invention relates to a vibration isolator with a stopper rubber portion, and more particularly to a vibration isolator with a stopper rubber portion in which an inner stopper rubber portion is disposed in an accommodation space inside a main rubber portion.

Conventionally, as a vibration isolator which connects a rigid first mounting member and a second mounting member with a main rubber part as a main rubber part made of a rubber elastic body, and performs a vibration isolating action based on elastic deformation of the main rubber part, There is known a configuration in which an inner stopper rubber portion is disposed in a housing space formed inside the main rubber portion.
For example, Patent Document 1 and Patent Document 2 listed below disclose a vibration isolator in which an inner stopper rubber portion is disposed in an accommodation space inside a main rubber portion.

This type of vibration isolator is also used as an engine mount.
FIG. 7 shows a specific example thereof.
In the figure, reference numeral 200 denotes an upper mounting bracket (first mounting member) attached to the engine side, and 202 denotes a lower mounting bracket (second mounting member) attached to the vehicle body side, and these are main bodies as main rubber portions made of a rubber elastic body. The rubber part 204 is elastically connected.
The main rubber part 204 has a cylindrical shape as a whole, and a cylindrical part 206 on the center side of the lower mounting bracket 202 is embedded in the lower part thereof.

An annular housing space 208 is formed inside the main rubber portion 204, and a cylindrical inner stopper rubber portion 210 is disposed therein.
The inner stopper rubber portion 210 is a member made of a single rubber separate from the main body rubber portion 204, and this inner stopper rubber portion 210 is located on the lower side in the drawing with respect to the accommodation space 208 as shown in the figure. Is inserted upwards and assembled there.

This engine mount has a main body against the housing space 208 inside the main body rubber portion 204, specifically, an engine-side bracket 212 extending upward through the inner space of the cylindrical inner stopper rubber portion 210. The upper mounting bracket 200 fixed by vulcanization bonding is fixed to the upper end portion of the rubber portion 204, and the lower mounting bracket 202 fixed to the lower end portion of the main rubber portion 204 by vulcanization bonding is a bracket on the vehicle body side. By being fixed to, the engine side is elastically supported in a suspended state.
That is, this engine mount is an engine suspension type mount, and is a penetration type of a type in which the engine side and the vehicle body side are connected by penetrating the bracket with respect to the main rubber part (strictly, the inner accommodation space). Mount.

Thus, the inner stopper rubber portion 210 is compressed and elastically deformed to suppress the displacement when the bracket 212 on the engine side relatively moves in the left-right direction in the figure (the left-right direction in the figure is the front-rear direction of the vehicle).
If the inner stopper rubber portion 210 is not provided, the bracket 212 on the engine side is greatly displaced in the left-right direction in the drawing, and suddenly hits the main body rubber portion 204 at some point, and the spring in the front-rear direction of the engine mount. The spring characteristic is a hard spring characteristic in which the characteristic suddenly rises. By interposing the inner stopper rubber part 210 between the main body rubber part 204 and the bracket 212, the spring characteristic of the engine mount in the horizontal direction in the figure, that is, in the vehicle longitudinal direction. Can have a soft spring characteristic.

As shown in FIG. 7, conventionally, the inner stopper rubber portion 210 is vulcanized and formed separately from the main body rubber portion 204 and assembled to the main body rubber portion 204.
However, if the inner stopper rubber part 210 is configured as an independent vulcanized product separate from the main body rubber part 204, the cost for manufacturing the inner stopper rubber part 210 is increased.

  In recent years, there has been an increasing need for cost reduction for vibration isolators including engine mounts, and there is a need for cost reduction of this type of engine suspension type engine mount.

  Although the engine suspended type engine mount has been described above as an example, the same problem is caused by other types of engine mounts in which the inner stopper rubber part is disposed in the accommodation space inside the main body rubber part and various stoppers other than the engine mount. This is a problem that commonly occurs in the vibration isolator with a rubber part.

In addition, there exists what was disclosed by the following patent document 3 as a prior art relevant to this invention.
The one disclosed in Patent Document 3 has a rubber diaphragm, and the diaphragm is inverted from the time of vulcanization molding and assembled into a product shape. The one disclosed in Patent Document 3 Is not related to the inner stopper rubber portion, but differs from the present invention in a characteristic configuration.

Japanese Utility Model Publication No. 6-24595 JP 2004-293664 A JP 2008-164116 A

  The present invention is based on the circumstances as described above, and the inner stopper rubber portion is arranged in the accommodation space inside the main rubber portion, which can effectively reduce the cost while maintaining the vibration isolating performance equivalent to the conventional one. The object is to provide a vibration isolator.

  Thus, according to the first aspect of the present invention, (a) a rigid first mounting member and a second mounting member, and (b) a rubber as a main rubber portion for elastically connecting the first mounting member and the second mounting member. A vibration isolator with a stopper rubber portion, comprising: a main body rubber portion made of an elastic body; and (c) an inner stopper rubber portion made of a rubber elastic body, which is disposed in a housing space formed inside the main body rubber portion. In addition, a stopper rubber piece having a configuration in which the inner stopper rubber portion is divided into a plurality of portions in the circumferential direction is continuously provided from the main rubber portion through a hinge portion that is partially thinly adjacent to the end of the main rubber portion. In the form that extends in the form of the inner stopper rubber portion, the shape of the front and back is opposite, and when the body rubber portion is vulcanized, the stopper rubber is integrally vulcanized together with the thin hinge portion. Inside the main rubber part at the hinge part Folded, characterized in that said at accommodating space together with the stopper rubber pieces in the circumferential direction have configured the inner stopper rubber portion.

  According to a second aspect of the present invention, in the first aspect, a joint between the stopper rubber piece and the main rubber portion by the hinge portion is linear.

  According to a third aspect of the present invention, in any one of the first and second aspects, a joint of the stopper rubber piece and the main body rubber portion of the plurality of divided portions by the hinge portion is a main input direction of external input. And is not divided in the orthogonal direction, and is one joint continuous in the orthogonal direction.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the main rubber part has a cylindrical shape, and the housing space is formed in an annular space surrounded by the main rubber part, The inner stopper rubber portion has a cylindrical shape and is divided into a plurality of stopper rubber pieces in the circumferential direction.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the inner stopper rubber portion is divided into four in the circumferential direction by the stopper rubber piece.

  According to a sixth aspect of the present invention, in any one of the fourth and fifth aspects, the first mounting member is provided at an upper end portion of the main rubber portion, and the second mounting member is provided at a lower end portion, and the main rubber portion. So that the engine-side bracket vertically passes through the housing space and the inner stopper rubber portion inside and is fixed to the first mounting member, and the second mounting member is fixed to the bracket on the vehicle body side. It is a suspension type engine mount that elastically supports the engine side in a suspended manner.

  According to a seventh aspect of the present invention, in any one of the fourth to sixth aspects, the inner stopper rubber portion includes a front / rear stopper portion projecting in the vehicle front-rear direction and a left / right stopper portion projecting in the vehicle left-right direction, In addition, a gap is provided between the front and rear stopper portions and the left and right stopper portions in the circumferential direction.

  According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the thin-walled hinge portion has a curved cross-sectional shape in a folded state of the stopper rubber piece.

  A ninth aspect relates to a method of manufacturing a vibration isolator with a stopper rubber portion. (A) a rigid first mounting member and a second mounting member; and (b) the first mounting member and the second mounting member. A main rubber part made of a rubber elastic body as a main rubber part to be elastically connected; and (c) an inner stopper rubber part made of a rubber elastic body arranged in a housing space formed inside the main rubber part. A method of manufacturing a vibration isolator with a stopper rubber portion, the stopper rubber piece having a form in which the inner stopper rubber portion is divided into a plurality of portions in the circumferential direction is continuously provided from the end portion of the main body rubber portion through a thin hinge portion. And the inner stopper rubber part is formed in the opposite direction, and is integrally vulcanized with the hinge part when the main body rubber part is vulcanized, and then the plurality of stopper rubber pieces. Each of the Folded with di portion on the inner side of the elastic body, characterized by forming the inner stopper rubber portion in the accommodating space together with the stopper rubber pieces in the circumferential direction.

Effects and effects of the invention

  As described above, in the present invention, the stopper rubber piece in the form in which the inner stopper rubber part is divided into a plurality of parts in the circumferential direction is continuously extended from the end part of the main part rubber part through the thin hinge part. At the time of vulcanization molding, it is vulcanized integrally with the hinge part, and each of the stopper rubber pieces is folded inside the main rubber part at the hinge part, and each stopper rubber piece is surrounded in the accommodation space inside the main rubber part. The inner stopper rubber portion is configured in accordance with the direction.

  In the present invention, since the main rubber portion and the inner stopper rubber portion can be combined to obtain a single vulcanized product, the vibration isolator is manufactured as a single independent vulcanized product as in the prior art. Compared with the case where it does, the process for vulcanization | cure of an inner stopper rubber | gum part can be reduced 1 process, and the cost required for vibration isolator manufacture can be made low in connection with this.

  In the present invention, a step of folding back the stopper rubber piece is required. However, if this folding step replaces the step of inserting an independent inner stopper rubber portion which has been conventionally required, a single inner stopper is formed as a whole. The rubber part vulcanization process can be reduced from the production process.

In the present invention, it is desirable that the joint by the hinge portion between the stopper rubber piece and the main rubber portion is linear.
By doing in this way, the stopper rubber piece can be easily and smoothly folded back from the state at the time of molding toward the accommodation space inside the main rubber part.

  In the present invention, the joint by the hinge portion between one of the plurality of divided rubber pieces and the main rubber portion is not divided in the direction orthogonal to the main input direction of the external input, but is one continuous in the orthogonal direction. It is desirable to keep an eye (Claim 3).

  In the present invention, the main body rubber portion is formed into a cylindrical shape, the housing space is formed as an annular space surrounded by the main body rubber portion, and the inner stopper rubber portion is formed into a cylindrical shape, and this is a plurality of circumferential directions. It can be divided into stopper rubber pieces (claim 4).

  In the present invention, the number of divisions of the inner stopper rubber portion can be variously set according to the shape of the inner stopper rubber portion and the main rubber portion and other conditions. (Claim 5).

In the present invention, the vibration isolator can be a suspended engine mount that elastically supports the engine in a suspended manner (claim 6).
That is, the first attachment member is provided at the upper end of the main rubber part and the second attachment member is provided at the lower end, and penetrates the housing space inside the main rubber part and the inner space of the inner stopper rubber part up and down to the engine side. The bracket can be fixed to the first mounting member, and the second mounting member can be fixed to the bracket on the vehicle body side.

According to a seventh aspect of the present invention, the inner stopper rubber portion includes a front and rear stopper portion protruding in the vehicle front-rear direction and a left and right stopper portion protruding in the vehicle left-right direction, and the front and rear stopper portions and the left and right stoppers. It can have a clearance in the circumferential direction between them.
By doing in this way, the spring characteristic in the vehicle front-rear direction of the vibration isolator including the inner stopper rubber part and by extension, the main body rubber part can be made soft.

  In the present invention, the cross-sectional shape of the thin hinge portion in the folded state of the stopper rubber piece can be a curved shape (claim 8).

  The present invention relates to a method for manufacturing a vibration isolator, wherein here, a stopper rubber piece having a form in which an inner stopper rubber portion is divided into a plurality of portions in the circumferential direction is continuously provided from the end portion of the main rubber portion through a thin hinge portion. In the extended form and in the shape opposite to the front and back when the inner stopper rubber part is configured, the main rubber part is vulcanized integrally with the hinge part at the time of vulcanization molding, and then each of the plurality of stopper rubber pieces is molded. Folded inside the main rubber part at the hinge part, and each stopper rubber piece is aligned in the circumferential direction in the housing space to constitute the inner stopper rubber part. According to this manufacturing method, the main rubber part and the inner stopper The vibration isolator having the rubber part integrally can be easily manufactured.

It is a figure which shows the engine mount of one Embodiment of this invention in the attachment state to a vehicle. It is a top view of the engine mount of the embodiment. (A) It is an AA sectional view taken on the line of FIG. (A) It is the EE view sectional drawing of FIG. (C) The engine mount of the same embodiment at the time of vulcanization molding is a diagram showing a cross-sectional view taken from the perspective of FIG. (D) It is the figure similarly shown in the AE cross section of FIG. It is the figure which looked at the engine mount of the embodiment at the time of vulcanization molding from the bottom side. It is the figure which showed the engine mount of the embodiment in the state different from FIG. 4, FIG. It is the figure which showed an example of the conventional engine mount.

Next, an embodiment in which the present invention is applied to an engine mount will be described in detail with reference to the drawings.
This example is a penetrating engine mount in which the vehicle body and the engine are elastically connected via a bracket penetrating the space inside the rubber body portion of the engine, and reference numeral 10 in FIG. 1 denotes the engine mount. Represents.

As shown in FIGS. 1 and 6, the engine mount 10 includes an upper mounting bracket (first mounting member) 12 and a lower mounting bracket (second mounting member) 14 formed by bending a metal plate material. An inner stopper rubber disposed in an accommodation space 18 inside the main rubber portion 16 and having a main rubber portion 16 as a main rubber portion made of a rubber elastic body, which is integrally vulcanized and bonded in an elastically connected state. Part 20.
In this embodiment, the left-right direction in FIG. 1 is the front-rear direction of the vehicle, and the direction orthogonal to the plane of the paper is the left-right direction of the vehicle.

  In FIG. 1, reference numeral 22 denotes a bracket on the vehicle body side, and the lower mounting bracket 14 of the engine mount 10 is fixed to the bracket 22 on the vehicle body side in a fixing hole 24.

In FIG. 1, reference numeral 26 denotes an engine-side bracket having a base portion 30 and a shaft portion 28 protruding upward therefrom. The upper mounting bracket 12 of the engine mount 10 is fixed to the shaft portion 28.
As shown in FIG. 2, the upper mounting bracket 12 has a substantially quadrangular shape in plan view, and the left end and the right end in the figure are bulged in an arc shape in the left direction and the right direction, respectively. A protruding portion 42 is formed.

As shown in FIGS. 1 and 4, the upper mounting bracket 12 has a shallow dish shape that is bent downward as a whole, and has an inclined portion 31 and a bottom portion 32 that is flat in the horizontal direction. is doing.
The bottom portion 32 is provided with a through-hole fixing hole 34 and extends upward with a smaller diameter than the screw portion 36 at the upper portion of the shaft portion 28 in the bracket 26 on the engine side, more specifically, the main body portion at the lower portion of the shaft portion 28. A threaded portion 36 passes through the fixing hole 34 and protrudes upward.
Then, the nut 38 is screwed into the protruding threaded portion 36, and the bottom portion 32 of the upper mounting bracket 12 is in a state where the nut 38 and the stepped portion 40 of the shaft portion 28 sandwich the bottom portion 32 from both the upper and lower sides. It is fixed to the shaft portion 28.

The main rubber part 16 has a cylindrical shape with a substantially square shape in plan view, and as shown in FIG. 6, the upper portion 44 has a substantially C-shaped longitudinal section.
In addition, the upper portion 44 has a shape in which left and right end portions in a plan view bulge in an arc shape in the left direction and the right direction in FIG. In FIG. 2, 46 represents the bulging portion.

On the other hand, the lower part 48 of the main rubber part 16 has a rectangular tube shape narrower than the upper part 44, as shown in FIG. 50 is embedded.
The lower mounting bracket 14 also has a curved shape in which the transition portion to the cylindrical portion 50 is convex upward, and the curved portion 52 is inside the base portion of the upper portion 44 of the main rubber portion 16. Embedded in.

  A lower end portion of the main rubber portion 16, specifically, a lower portion of the lower mounting bracket 14 from the cylindrical portion 50 is a rebound stopper rubber portion 54. When the contact portion 56 of the base portion 30 in the bracket 26 contacts, a stopper action at the time of rebound is performed.

  In FIG. 6, the accommodation space 18 inside the main rubber part 16 forms an annular space surrounded by the cylindrical main rubber part 16, and the inner stopper rubber part 20 arranged there is as a whole. It has a cylindrical shape, and is vulcanized integrally with the main rubber part 16 in a state where it is joined to the main rubber part 16 at the thin hinge part (integral hinge part) 57, specifically the lower end part at the lower part 48 thereof. Has been.

The inner stopper rubber portion 20 has an upper circular shape and a substantially rectangular outer shape, and is a fitting portion 58 that fits into the shaft portion 28 in an external fitting state, and a lower portion that is a main rubber. The stopper 16 acts as a stopper acting portion 60 that acts against the inner surface of the lower portion 48 of the portion 16.
The thin hinge portion 57 has a curved shape in which the cross section of the inner stopper rubber portion 20 protrudes downward in a state where the inner stopper rubber portion 20 is formed.

In the longitudinal section shown in FIG. 6, between the inner stopper rubber portion 20 and the main body rubber portion 16, more specifically, a portion from the upper end of the stopper action portion 60 to the upper end of the fitting portion 58, and the main body rubber portion 16. A gap K ₁ is formed between the upper portion 44 and the upper portion 44.

As also shown in FIG. 1, the gap K ₃ caused between the lower end of the fitting portion 58 and the portion extending the lower end of the stopper function portion 60, with the shank 28 of the bracket 26 of the engine side It has been.
The outer peripheral surface of the stopper action portion 60 is in contact with the lower portion 48 of the main rubber portion 16.
Further, as shown in FIG. 3 (a) showing a cross section taken along the line _{II in} FIG. 1, gaps K ₂ are formed in the four corner portions in the circumferential direction of the stopper action portion 60.

  In the present embodiment, the inner stopper rubber portion 20 is divided into four in the circumferential direction, and the inner stopper rubber portion 20 is integrated with the main body rubber portion 16 at the hinge portion 57 as shown in FIGS. 4 and 5. It is composed of four stopper rubber pieces 20-1, 20-2, 20-3 and 20-4.

  Here, as shown in FIG. 5 (FIG. 5 shows the shape seen from the bottom side at the time of vulcanization molding before the rubber stopper pieces 20-1 to 20-4 are folded back). 16 and the stopper rubber pieces 20-1, 20-2, 20-3, and 20-4, the joint portions of the hinge portions 57 are all linear, and at the joint portions, There is no curved portion in plan view and bottom view.

Here, the four stopper rubber pieces 20-1 to 20-4 are similar in shape, but the shape of each part is different as follows.
Specifically, as shown in FIG. 3A, the stopper rubber pieces 20-1, 20-2, 20-3, and 20-4 are part of the fitting portion 58 (four fitting portions 58). (Partially divided). In the figure, reference numerals 58-1, 58-2, 58-3, and 58-4 denote fitting part pieces obtained by dividing the fitting part 58, respectively.

  As shown in FIG. 3A, the fitting pieces 58-1 and 58-3 in the stopper rubber pieces 20-1 and 20-3 have the same shape except that their directions are different by 180 degrees. Further, the fitting pieces 58-2 and 58-4 in the stopper rubber pieces 20-2 and 20-4 have the same shape except that their orientations are different by 180 degrees. 58-4 is slightly longer in the circumferential direction than the fitting part pieces 58-1 and 58-3.

Each of the stopper rubber pieces 20-1, 20-2, 20-3 and 20-4 also has a part of the stopper action portion 60. In the figure, reference numerals 60-1, 60-2, 60-3, and 60-4 denote stopper action part pieces formed by dividing the stopper action part 60.
As shown in the figure, the shapes of these four stopper action pieces are also related as follows. That is, the pair of stopper action pieces 60-1 and 60-3 has the same shape except that the directions are different by 180 degrees, and the pair of stopper action pieces 60-2 and 60-4 are also now Although the direction is the same except that the direction is different by 180 degrees, the shape is different from that of the stopper action pieces 60-1 and 60-2.

  The inner stopper rubber portion 20 is provided mainly for the purpose of softening the spring characteristic of the engine mount 10 in the vehicle front-rear direction (left-right direction in the figure). The stopper action pieces 60-1 and 60-3 of the pieces 20-1 and 20-3 are thick, and a pair of stopper rubber pieces 20-2 located in the vehicle left-right direction (vertical direction in FIGS. 3 and 5). , 20-4 stopper action part pieces 60-2 and 60-4 are made thinner.

FIG. 4 shows the shape at the stage where the main rubber portion 16 and the inner stopper rubber portion 20 are vulcanized, that is, the shape before the four stopper rubber pieces 20-1, 20-2, 20-3, and 20-4 are bent. ing.
At this time, each of the stopper rubber pieces 20-1, 20-2, 20-3, and 20-4 has a shape reverse to the shape shown in FIG. 1, FIG. 3, and FIG.
The thin hinge portion 57 has a straight shape in the vertical direction as shown in FIG.

  In this embodiment, the stopper rubber pieces 20-1 to 20-4 integrally molded with the main body rubber portion 16 together with the hinge portion 57 are changed from the state shown in FIG. 4 to the main body rubber as shown in FIG. The inner stopper rubber portion 20 is configured by bending 180 degrees inside the portion 16, making the front and back and the up and down directions opposite to each other and aligning them in the circumferential direction within the storage chamber 18.

  In this state, the engine mount 10 is fixed to the vehicle body side bracket 22 by the lower mounting bracket 14, and is fixed to the engine side bracket 26 by the upper mounting bracket 12.

In the engine mount 10 of the present invention, the main input direction of the external input is the vehicle front-rear direction. In this case, as shown in FIG. 3 (a), the inner stopper rubber portion 20 is replaced with the stopper action piece 60-1. , 60-2, 60-3, and 60-4 (here, the segment P ₂ passing through the center of the vehicle, the vehicle front-rear direction and the direction perpendicular thereto) P _2. When the longitudinal direction input is applied to -1, 60-3, each of the stopper action pieces 60-1, 60-3 is separated (separated) in the vehicle left-right direction (vertical direction in the figure). There is a fear.
For this purpose, in this embodiment, the inner stopper rubber part 20 is divided into four parts by the line segment P ₁ having an angle different from the line segment P ₂ and θ (here, θ = 40 °), whereby the stopper action piece 60- 1, 60-3 is designed not to be separated (separated) in the left-right direction of the vehicle by the front-rear direction input.

According to the present embodiment as described above, the main rubber portion 16 and the inner stopper rubber portion 20 can be combined and obtained as one vulcanized product. Compared with the case where the vibration isolator is manufactured as one vulcanized product, the process for vulcanizing the inner stopper rubber portion 20 can be reduced, and the cost required for manufacturing the vibration isolator can be reduced accordingly. Can be made.
On the other hand, the vibration proof performance of the engine mount 10 including the inner stopper rubber portion 20 can be maintained equivalent to the conventional one.

  In this embodiment, the joint of the stopper rubber pieces 20-1, 20-2, 20-3, 20-4 and the main rubber part 16 by the hinge part 57 is linear, and the stopper rubber piece 20- 1 to 20-4 can be easily and smoothly folded from the state during vulcanization molding toward the accommodation space 18 inside the main rubber part 16.

Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, the engine mount of the above-described embodiment is only one example, and it can be configured in various other shapes, for example, the main rubber portion can be configured in a circular shape in plan view. It is also possible to divide the inner stopper rubber portion into a plurality of divisions other than four. Further, the present invention can be applied to a vibration isolator other than the engine mount, specifically, an anti-vibration device having a configuration in which an inner stopper rubber portion is disposed in a housing space inside the main rubber portion. The present invention can be configured in various forms without departing from the spirit of the invention.

10 Engine mount 12 Upper mounting bracket (first mounting member)
14 Lower mounting bracket (second mounting member)
16 the elastic body 18 housing space 20 of the inner stopper rubber portion 20-1,20-2,20-3,20-4 bracket 26 engine side of the stopper rubber member 22 body-side bracket 57 hinge unit K _{1, K} 2, K ₃ gaps

Claims (9)

(A) a rigid first mounting member and a second mounting member; and (b) a main rubber portion made of a rubber elastic body as a main rubber portion for elastically connecting the first mounting member and the second mounting member; (C) an anti-vibration device with a stopper rubber portion having an inner stopper rubber portion made of a rubber elastic body disposed in a housing space formed inside the main rubber portion,
A stopper rubber piece having a shape in which the inner stopper rubber portion is divided into a plurality of portions in the circumferential direction extends continuously from the main rubber portion through a hinge portion that is partially thinly adjacent to the end of the main rubber portion. In the form and in the shape opposite to the front and back when the inner stopper rubber part is configured, the rubber part is integrally vulcanized together with the thin hinge part at the time of vulcanization molding of the main body rubber part, and the stopper rubber piece is An anti-vibration device with a stopper rubber portion, wherein the inner stopper rubber portion is formed by folding back inside the main body rubber portion at a hinge portion and aligning each stopper rubber piece in the circumferential direction in the housing space.   2. The vibration isolator with a stopper rubber portion according to claim 1, wherein a joint between the stopper rubber piece and the main rubber portion by the hinge portion is linear.   In any one of Claims 1, 2, the joint by the said hinge part of one said stopper rubber piece and the said main body rubber part divided into multiple is divided | segmented into the orthogonal direction with the main input direction of external input. The anti-vibration device with a stopper rubber part is characterized in that it is one joint continuous in the orthogonal direction. In any one of Claims 1-3, the said main body rubber part has comprised the cylinder shape, and the said accommodating space has comprised the cyclic | annular space enclosed by this main body rubber part,
The vibration isolator with a stopper rubber portion, wherein the inner stopper rubber portion has a cylindrical shape and is divided into a plurality of stopper rubber pieces in the circumferential direction.   5. The vibration isolator with a stopper rubber part according to claim 1, wherein the inner stopper rubber part is divided into four parts in the circumferential direction by the stopper rubber piece.   The first attachment member is provided at the upper end of the main rubber part, and the second attachment member is provided at the lower end. The housing space inside the main rubber part and the inner stopper rubber part are connected to the bracket on the engine side. Is suspended through the top and bottom and fixed to the first mounting member, and the second mounting member is fixed to a bracket on the vehicle body side, and elastically supports the engine side in a suspended manner. The vibration isolator with a stopper rubber part according to any one of claims 4 and 5, which is a mold engine mount.   7. The inner stopper rubber portion according to claim 4, wherein the inner stopper rubber portion has a front / rear stopper portion projecting in the vehicle front-rear direction and a left / right stopper portion projecting in the vehicle left-right direction. A vibration isolator with a stopper rubber part, characterized in that there is a gap in the circumferential direction between the stopper part and the stopper part.   8. The vibration isolator with a stopper rubber portion according to claim 1, wherein the thin hinge portion has a curved cross-sectional shape in a folded state of the stopper rubber piece. (A) a rigid first mounting member and a second mounting member; and (b) a main rubber portion made of a rubber elastic body as a main rubber portion for elastically connecting the first mounting member and the second mounting member; (C) an anti-vibration device with a stopper rubber portion, which is disposed in an accommodation space formed inside the main rubber portion, and has an inner stopper rubber portion made of a rubber elastic body,
When the inner stopper rubber portion is configured in such a manner that the stopper rubber piece in the form in which the inner stopper rubber portion is divided into a plurality of portions in the circumferential direction continuously extends from the end portion of the main body rubber portion through a thin hinge portion, and Is a reverse-facing shape, and is integrally vulcanized together with the hinge portion when the main rubber portion is vulcanized, and then each of the plurality of stopper rubber pieces is folded inside the main rubber portion at the hinge portion. A method of manufacturing a vibration isolator with a stopper rubber portion, wherein the inner stopper rubber portion is configured by aligning each stopper rubber piece in the circumferential direction in the housing space.

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