JP2012207708A - Method of manufacturing vibration control device, and vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a vibration control device capable of reducing required cost in the vibration control device, by integrally vulcanizing and molding a stopper rubber part in a body rubber part, in the vibration control device of a structure for installing an insulator body by being press-fitted in the axial direction in a cylindrical part provided with a stopper receiving part projecting inward in the direction perpendicular to the axis on one end side in the axial direction.SOLUTION: This method of manufacturing the vibration control device is provided for installing the insulator body 12 having mounting brackets 36 and 72 separated in the axial direction and the body rubber part 34 for elastically connecting them, by being press-fitted in the cylindrical part 22 of a bracket 14. A stopper rubber part 82 is integrally vulcanized and molded in the body rubber part 34, and in an installation process, installation is performed by press-fitting the mounting bracket 72 in the cylindrical part 22 in a state of being held in a groove 106 of a positioning tool 86 by elastically bending and deforming the stopper rubber part 82.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration isolator manufacturing method, and more particularly to a vibration isolator manufacturing method and a vibration isolator having a stopper rubber portion integrally with a main body rubber portion that mainly performs a vibration isolating function.

  Conventionally, (A) a main body rubber portion that receives a main vibration input in the axial direction and has an anti-vibration action by elastic deformation, and is fixed to one end side in the axial direction of the main body rubber portion with a cylindrical shape and an opening directed in a direction perpendicular to the axis The first mounting member attached to the supported member side and the first mounting member attached to the supporting member side fixed to the other end side in the axial direction of the main rubber part, and the main rubber part. An insulator body having a second mounting member having a large dimension in the direction perpendicular to the axis; and (B) both ends in the axial direction have an opening shape, and project inward in the direction perpendicular to the axis on one end side in the axial direction on the first mounting member side. The bracket on the support member side having the cylindrical portion provided with the stopper receiving portion, the second mounting member of the insulator main body through the opening on the side opposite to the stopper receiving portion of the cylindrical portion in the axial direction. 1 Press fit into the cylindrical part from the side of the mounting member and assemble Anti-vibration devices are known.

FIG. 7 shows a specific example thereof.
In the figure, reference numeral 200 denotes a main body rubber portion of an insulator main body 202 which receives a main vibration input in the vertical axial direction in the figure and elastically deforms to provide a vibration-proofing action, and is made of a metal having a cylindrical shape at one axial end side. The rigid first mounting member 204 is fixed with the opening directed in the direction perpendicular to the axis.
The first attachment member 204 is attached to the bracket 206 by press-fitting the bracket 206 on the side of the supported member.
On the other end side in the axial direction of the main rubber part 200, a metal-made rigid second mounting member 208 having a dimension perpendicular to the axis perpendicular to the first mounting member 204 and the main rubber part 200 is fixed.

Reference numeral 210 denotes a metal-made rigid cylindrical portion provided on a bracket attached to the support member 212, and both ends in the axial direction have an opening shape.
The cylindrical portion 210 is a flange portion inward in the direction perpendicular to the axis over the entire circumference on one end side in the axial direction on the first mounting member 204 side. That is, one end side in the axial direction on the first mounting member 204 side is a bent portion 214 inward in the direction perpendicular to the axis over the entire circumference.

  In this vibration isolator, the second mounting member 208 of the insulator body 202 is press-fitted into the cylindrical portion 210 from the first mounting member 204 side through an opening opposite to the bent portion 214 of the cylindrical portion 210 in the axial direction. By doing so, the insulator main body 202 and the bracket having the cylindrical portion 210 are assembled.

  Reference numeral 216 denotes a stopper receiving portion composed of a bent portion 214 (specifically, a part 214a of the bent portion 214) and an additional member 218 added to the outer surface in the axial direction. A plate-like stopper rubber portion (bound-side stopper rubber portion) 220 that is separate from the main body rubber portion 200 is attached.

When the bracket 206 on the supported member side is relatively displaced downward in the figure, the stopper rubber portion 220 abuts against the stopper contact portion 222 to act as a stopper, and restricts excessive displacement of the bracket 206.
At this time, the force applied to the stopper rubber portion 220 is received by the stopper receiving portion 216.

  However, in the case of the vibration isolator shown in FIG. 7, the stopper rubber portion 220 must be prepared as a vulcanized product separately from the main body rubber portion 200. A process for assembling later is required, which increases the cost of the vibration isolator.

As a solution, it may be possible to vulcanize and mold the stopper rubber part 220 integrally with the main body rubber part 200. However, in the case of the vibration isolator having this structure, the stopper rubber part 220 is integrally added to the main body rubber part 200. When the sulfur molding is performed, when the second mounting member 208 is press-fitted upward through the opening at the lower end in the drawing from the first mounting member 204 side to the cylindrical portion 210 as described above, The stopper rubber portion 220 integrally vulcanized with the main body rubber portion 200 interferes with the stopper receiving portion 216 including the bent portion 214a that protrudes inwardly in the direction perpendicular to the axis on the upper end side of the cylindrical portion 210 in the figure, or the stopper The press-fit cannot be performed satisfactorily by being sandwiched between the receiving portion 216 and the second mounting member 208.
Accordingly, the insulator main body 202 and the bracket cannot be assembled in a state where the stopper rubber portion 220 is positioned on the upper side of the stopper receiving portion 216 in the drawing, that is, in a state facing the stopper receiving portion 216 in the axial direction.

Conventionally, a stopper rubber portion formed integrally with a main rubber portion is known.
For example, Patent Document 1 below discloses a “liquid-filled vibration isolator” formed by integrally forming a stopper rubber portion on a main rubber portion.
However, this is not a structure in which the stopper rubber portion molded integrally with the main body rubber portion must be press-fitted so as to pass through the cylindrical portion. The problem cannot be solved.

  On the other hand, the following Patent Document 2 discloses an invention of a cylindrical vibration isolator, in which a pair of plate-like stopper rubber portions provided on the axial end surfaces of the main body rubber portion so as to face each other are externally provided. When press fitting a metal fitting into the bracket on the other side, it will be bent and deformed radially outward by its own weight, and it will be bent and deformed to protrude outward in the direction perpendicular to the axis. In order to solve the problem that is difficult, the press-fitting is performed in a state where the pair of plate-like stopper rubber portions are elastically deformed and engaged with each other.

  The one disclosed in Patent Document 2 is such that the pair of stopper rubber portions do not interfere with the press-fitting, but the stopper rubber portion extends in relation to the other cylindrical portion to be press-fitted. The direction is different from the anti-vibration device which is the subject of the present invention, and the structure of the anti-vibration device is also different.

JP 2004-156628 A JP 2009-243485 A

  The present invention is based on the above circumstances, and the insulator body is press-fitted in the axial direction and assembled to the cylindrical portion provided with the stopper receiving portion that protrudes inward in the direction perpendicular to the axis at one axial end side. In the vibration isolator having the structure, the stopper rubber portion facing the stopper receiving portion in the axial direction in the assembled state can be integrally vulcanized and molded into the main body rubber portion, thereby reducing the required cost of the vibration isolator. The object of the present invention is to provide a method of manufacturing a vibration isolator that can be used and a novel vibration isolator obtained by the method.

  Thus, claim 1 relates to a method of manufacturing a vibration isolator. (A) A main body rubber portion which receives a main vibration input in the axial direction and has a vibration isolating action by elastic deformation, and has a cylindrical shape and an opening perpendicular to the axis. A first attachment member attached to the supported member side, which is fixed to one end side in the axial direction of the main body rubber portion toward the direction, and a support fixed to the other end side in the axial direction of the main body rubber portion An insulator body having a first attachment member and a second attachment member having a larger dimension in the direction perpendicular to the axis than the main rubber part, and (B) both ends in the axial direction have an opening shape, The bracket on the support member side having a cylindrical portion provided with a stopper receiving portion projecting inward in the direction perpendicular to the axis at one end side in the axial direction on the first attachment member side, and the second attachment member on the insulator body The axial direction of the stopper portion of the cylindrical portion A vibration isolator manufacturing method in which the cylindrical portion is press-fitted and assembled from the side of the first mounting member through the opening on the opposite side, the step of preparing the insulator body, and the second mounting member comprising: An assembly step of press-fitting into the tubular portion and assembling the insulator body and the bracket. In the step of preparing the insulator body, the stopper receiving portion and the A stopper rubber portion extending from the main body rubber portion to a position facing the stopper receiving portion in the axial direction at an intermediate position in the axial direction between the first mounting member and the main body rubber portion is integrally vulcanized and molded. In the assembling step, an insertion member is inserted into the first mounting member, and the stopper rubber portion is elastically bent and deformed so that the entirety is located inward of the stopper receiving portion in the direction perpendicular to the axis. The press-fitting preparation step for holding the holding portion of the insertion member, the press-fitting step for press-fitting the second mounting member into the cylindrical portion after the press-fitting preparation step, and the press-fitting after the press-fitting step The stopper rubber portion that has come out of the cylindrical portion is released from being held by the holding portion to be restored in shape and is positioned at a position facing the stopper receiving portion in the axial direction. It is characterized by attaching.

  According to a second aspect of the present invention, in the first aspect, the holding portion is a groove provided in the insertion member, and the front end side of the stopper rubber portion is fitted into the groove to be held. And

  According to a third aspect of the present invention, in any one of the first and second aspects, the insertion member is inserted into the first attachment member in a state where the holding portion is exposed to the outside of the first attachment member. Features.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the insertion member is divided into a plurality in the direction of insertion into the first attachment member, and the respective divided bodies are fixed by fixing means. It is characterized by being.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the insertion member is a positioning member that positions the insulator body at an angular position around the axis with respect to the cylindrical portion during press-fitting. And

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the vibration isolator has a liquid chamber inside the insulator body, and the liquid chamber is a partition member and includes a main liquid chamber and a sub liquid chamber. It is a liquid seal type engine mount device that is partitioned into two parts and dampens vibrations when the liquid inside flows between the main liquid chamber and the sub liquid chamber through the orifice passage.

  The present invention relates to a vibration isolator, and (A) a main body rubber portion that receives a main vibration input in the axial direction and has a vibration isolating action by elastic deformation, and has a cylindrical shape with the opening directed in a direction perpendicular to the axis. A first attachment member attached to the supported member side fixed to one end side in the axial direction of the rubber part, and attached to the support member side attached to the other end side in the axial direction of the main body rubber part. An insulator body having a first mounting member and a second mounting member having a dimension perpendicular to the axis perpendicular to the main body rubber portion, and (B) both ends in the axial direction have an opening shape, and the first mounting member side A bracket on the support member side having a cylindrical portion provided with a stopper receiving portion projecting inwardly in a direction perpendicular to the axial direction at one axial end side, the second mounting member of the insulator body, and the cylindrical portion The opening on the opposite side of the stopper receiving part And is press-fitted into the cylindrical portion from the side of the first mounting member and assembled, and the main body rubber portion has an axially intermediate position between the stopper receiving portion and the first mounting member. A stopper rubber portion extending from the main rubber portion to a position facing the stopper receiving portion in the axial direction is integrally vulcanized and molded.

  According to an eighth aspect of the present invention, in the seventh aspect, the one end side of the first mounting member side in the axial direction is an inwardly bent portion that is perpendicular to the axial direction, and the bent portion itself is the stopper receiving portion. It consists of part.

  According to a ninth aspect of the present invention, in any one of the seventh and eighth aspects, the insulator body has a liquid chamber, and the liquid chamber is partitioned into a main liquid chamber and a sub liquid chamber by a partition member, This is a liquid-sealed engine mount device that dampens vibration by flowing between the main liquid chamber and the sub liquid chamber through the orifice passage.

Effects and effects of the invention

As described above, in the manufacturing method of the present invention, the stopper rubber that extends from the main rubber portion to the position facing the stopper receiving portion in the axial direction at the intermediate position in the axial direction between the stopper receiving portion and the first mounting member. The part is vulcanized and molded integrally with the main rubber part.
In the assembling process, the insertion member is inserted therein using the internal space of the first mounting member having a cylindrical shape, and the stopper rubber portion formed integrally with the main rubber portion is entirely formed as a stopper receiving portion. The deformed state is elastically bent and deformed so as to be located on the inner side in the direction perpendicular to the axis, and the deformed state is held by the holding portion of the insertion member. In this state, the second mounting member is held against the tubular portion of the bracket. It press-fits from the side of the 1st attachment member through the opening on the opposite side to a part.

At this time, since the stopper rubber portion is held by the insertion member in a state where the entirety of the stopper rubber portion is positioned inward of the stopper receiving portion in the direction perpendicular to the axis, the stopper rubber portion interferes with the stopper receiving portion, Without being sandwiched between the attachment member and the stopper receiving portion, it can pass through this in the axial direction and move to a position outside the cylindrical portion.
That is, in the manufacturing method of the present invention, the stopper rubber portion does not obstruct the press-fitting, and the press-fitting can be performed satisfactorily.

  Thus, after the press-fitting, the stopper rubber part moved to the position outside the cylindrical part is released from the holding by the holding part of the insertion member to recover the shape, so that the stopper rubber part is axially moved with respect to the stopper receiving part. It can be located in the position facing.

  According to the manufacturing method of the present invention, the stopper rubber portion can be previously vulcanized and molded integrally with the main body rubber portion, whereby the number of rubber vulcanized products can be reduced, and a separate stopper rubber portion can be provided. The process of assembling by retrofitting is also unnecessary, and the cost of the vibration isolator can be reduced.

In the manufacturing method of the present invention, a groove is provided in the insertion member to form a holding portion, and the tip end side of the stopper rubber portion is fitted and held therein (claim 2). .
In this way, the holding portion can be configured easily, and the stopper rubber portion can be easily held by simply fitting the tip end side of the stopper rubber portion therein, and the tip of the stopper rubber portion can be held from there. The holding can be easily released by extracting the side.

The insertion member can be inserted into the first mounting member in a state where the holding portion is exposed to the outside of the first mounting member (Claim 3).
In this case, the stopper rubber portion may be held with respect to the holding exposed to the outside of the first mounting member, so that the holding operation and the releasing operation are facilitated.

The said insertion member can be divided | segmented into plurality in the insertion direction to a 1st attachment member, and each division body can be fixed with a fixing means (Claim 4).
By doing so, both ends of the insertion member can be protruded and exposed to the outside of the first mounting member, and each end can be made larger than the opening of the first mounting member. The insertion member can be firmly assembled to the first attachment member in the inserted state so that the first attachment member is sandwiched between the end portions.
A magnet can be preferably used as the fixing means.

In the manufacturing method of the present invention, a positioning member that is inserted into the first mounting member at the time of press-fitting and positions an angular position around the axis of the insulator body with respect to the press-fitting jig, that is, an angular position around the axis with respect to the press-fitting jig. A positioning member with respect to the cylindrical portion (that is, the bracket) in which is defined can be used as the insertion member.
According to the fifth aspect, the positioning member used for press-fitting can be effectively used as the insertion member.

  The manufacturing method of the present invention is a liquid-sealed engine mount device, more specifically, a liquid chamber is provided inside an insulator body, the liquid chamber is divided into a main liquid chamber and a sub liquid chamber by a partition member, and the liquid inside is an orifice. The present invention can be suitably applied to the manufacture of a liquid ring engine mount device that dampens vibration by flowing between the main liquid chamber and the sub liquid chamber through the passage.

  Next, a seventh aspect of the present invention relates to a vibration isolator, which faces the stopper receiver in the axial direction at an intermediate position in the axial direction between the stopper receiver and the first mounting member. The stopper rubber part that extends to the position is vulcanized and molded integrally with the main body rubber part. This vibration isolator eliminates the need for a separate stopper rubber part that has been used in the past. Since the number of points is reduced and a step of attaching a separate stopper rubber portion by retrofitting is unnecessary, the cost required for the vibration isolator can be effectively reduced.

In this case, one end side in the axial direction on the first mounting member side of the cylindrical portion of the bracket is formed as a bent portion inward in the direction perpendicular to the axis, and the bent portion itself is used as the stopper receiving portion. (Claim 8).
In the vibration isolator of the present invention, the stopper rubber portion is integrally vulcanized with the main body rubber portion, so that it is not necessary to attach the separate stopper rubber portion to the stopper receiving portion of the cylindrical portion. Therefore, a bent portion can be provided in the cylindrical portion, and the bent portion itself can be used as the stopper receiving portion.
In this case, an additional member for attaching a separate stopper rubber portion, which has been conventionally required, can be eliminated, and the cost can be further effectively reduced.

  The vibration isolator of the present invention can be configured as a liquid ring engine mount device (claim 9).

It is a perspective view which shows the engine mount apparatus of one Embodiment of this invention. It is sectional drawing of the engine mount apparatus of FIG. It is a figure which decomposes | disassembles and shows the insulator main body of FIG. It is explanatory drawing of the principal part process of the manufacturing method of this embodiment which manufactures the engine mount apparatus of FIG. It is explanatory drawing of the other principal part process of the manufacturing method following FIG. FIG. 6 is an explanatory diagram of still another main process of the manufacturing method following FIG. 5. It is a figure which shows a conventionally well-known vibration isolator.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a liquid ring type engine mount device as an example of a vibration isolator. Here, a state before assembly to a vehicle, that is, no load that has not received the weight of the engine (static load from the engine). Shown in state.
As shown in the figure, this engine mount device 10 is an assembly of an insulator main body 12 that mainly performs vibration isolation and a metal rigid bracket 14 that is fixed to the vehicle body 15 (see FIG. 2). Consists of.
Here, the engine mount device 10 is installed in the vehicle with the left-right direction in FIG. 1 as the front-rear direction of the vehicle and the direction perpendicular thereto as the left-right direction.

The bracket 14 includes a pair of standing leg portions 16 and a bridge portion 18 that connects the upper end sides of the leg portions 16 in the figure, and a displacement restricting portion 20 having a gate shape in front view, and a pair of leg portions. 16 has a cylindrical tubular portion 22 that holds the insulator body 12.
Here, the cylindrical portion 22 is joined to the inner surfaces of the pair of leg portions 16 and integrated with the displacement restricting portion 20.

The displacement restricting portion 20 has an attachment portion 24 that extends in a direction away from the lower ends of the pair of leg portions 16.
The bracket 14 is fixed to the vehicle body 15 side in the fixing holes 26 of the mounting portions 24 in a state where the insulator body 12 is held by the cylindrical portion 22.

  Here, on the outer surface of the displacement restricting portion 20, ribs 28 extending from one attachment portion 24 to the other attachment portion 24 via the leg portion 16, the bridge portion 18, and the leg portion 16 are arranged at both left and right ends in a side view. It is integrally provided at a position (both end positions in the width direction in FIG. 2).

On the other hand, as shown in FIG. 2, the cylindrical portion 22 having a cylindrical shape has an opening at both ends, and these openings are arranged in the vertical direction, that is, in the axial direction of a main body rubber portion described later.
On the upper end side of the cylindrical portion 22, an inward flange portion perpendicular to the axis is integrally provided in an annular shape over the entire circumference. That is, the inwardly bent portion 30 in the direction perpendicular to the axis is provided on the upper end side of the cylindrical portion 22 over the entire circumference.

In FIG. 2, 32 is a rubber elastic body forming a main part of the insulator main body 12, and this rubber elastic body 32 is a main body rubber portion 34 having an annular shape in the circumferential direction with a cross-sectional shape opened downward in a C shape. have.
The main rubber part 34 receives a main vibration input in the axial direction in the vertical direction in FIG.

On the upper end side of the main rubber part 34, there is provided an attachment fitting (first attachment member) 36 having a rectangular cylindrical shape as an attachment part to the engine side.
The rubber elastic body 32 has a cylindrical rubber portion 38 having a rectangular cylindrical shape above the main body rubber portion 34, and the mounting bracket 36 is embedded inside the cylindrical rubber portion 38. Yes.
Here, the mounting bracket 36 is integrally vulcanized and bonded to the cylindrical rubber portion 38.

The mounting bracket 36 forms an insertion space 42 on the inner side through the inner rubber layer 40 of the cylindrical rubber portion 38.
2 is inserted into the insertion space 42 by press-fitting into the insertion space 42, so that the bracket 36 is fitted to the press-fit portion 46 via the inner rubber layer 40. 44.

The upper part of the mounting bracket 36 in the cylindrical rubber part 38 forms a stopper rubber part 48 on the rebound side.
Under the condition where the engine load is applied, the main rubber part 34 is in a state of being compressed and elastically deformed downward in the figure, and at this time, the stopper rubber part 48 on the rebound side is downward in the figure from the bridge part 18 in the displacement restricting part 20. The stopper clearance on the rebound side is formed in the space.

  When the engine-side bracket 44 is largely displaced to the rebound side, the rebound-side stopper rubber portion 48 abuts against the stopper contact portion 50 of the bridge portion 18 in the displacement restricting portion 20 and acts as a stopper. The excessive displacement is regulated.

Incidentally, the front and rear portions of the cylindrical rubber portion 38 with respect to the mounting bracket 36 constitute a stopper rubber portion 52 in the front and rear direction as shown in FIG.
When the bracket 44 is largely displaced in the front-rear direction of the vehicle, the stopper rubber portions 52 abut against the leg portions 16 in the displacement restricting portion 20 to act as a stopper and restrict excessive displacement in the front-rear direction.

As shown in FIG. 3, the rubber elastic body 32 is provided with a groove forming portion 54 having a substantially inverted U-shaped cross section and a ring shape in the circumferential direction on the lower end side following the main rubber portion 34. An annular fitting 56 having a similar cross-sectional shape is embedded in the groove forming portion 54.
The annular metal piece 56 is integrally vulcanized and bonded to the groove forming portion 54.

The groove forming portion 54 forms an annular groove in the circumferential direction, and an orifice passage extending annularly in the circumferential direction by the groove forming portion 54 and a partition member 58 that closes the opening at the lower end of the groove in the drawing. 60 is formed.
Here, the partition member 58 includes a rubber disc-shaped movable plate 62 and a holding portion 64 that holds the movable plate 62 at the outer peripheral portion.

Reference numeral 66 denotes a rubber diaphragm film, and a fixed metal fitting 68 having an annular shape on the outer periphery is fixed in a partially embedded state.
Here, the fixing bracket 68 has a rising portion 70 that rises upward in the drawing.
The diaphragm film 66 is attached to the rubber elastic body 32 by strongly bending the rising portion 70 inward to compress the outer rubber layer 71 of the groove forming portion 54 and fixing the rising portion 70 to the annular metal fitting 56. It is done.

Specifically, in this embodiment, the rubber elastic body 32, the mounting bracket 36, and the annular bracket 56 form an integrated vulcanized product 76, and the rising portion 70 of the fixing bracket 68 is formed with respect to the vulcanized product 76. By strongly bending and fixing inward, a liquid sealing unit 79 including the diaphragm film 66, the partition member 58, and the fixing bracket 68 on the outer periphery thereof is assembled to the vulcanized product 76.
That is, in this embodiment, the above-described insulator body 12 is constituted by the integral vulcanized product 76 and the liquid seal unit 79.

In this embodiment, the annular fitting 56 embedded in the groove forming portion 54 and the fixing fitting 68 of the diaphragm film 66 are attached to the bracket 14 provided on the lower end side of the main rubber portion 34 (second attachment). Member) 72.
Here, the mounting bracket 72 is larger in diameter than the mounting bracket 36 and the main rubber part 34 described above. That is, the dimension perpendicular to the axis is large.

In this embodiment, the insulator main body 12 has the main body rubber portion 34 as an upper wall and a rubber diaphragm film 66 as a lower wall to form a liquid chamber 74 therebetween. The liquid chamber 74 is filled with an incompressible liquid L.
Here, water, alkylene glycol, polyalkylene glycol, silicone oil or the like is used as the liquid L.

The liquid chamber 74 is divided by the partition member 58 into an upper main liquid chamber 77 and a lower sub liquid chamber 78 in the drawing.
The main liquid chamber 77 and the sub liquid chamber 78 communicate with each other through the orifice passage 60 described above.
Specifically, the orifice passage 60 communicates with the main liquid chamber 77 through an opening (not shown), and communicates with the sub liquid chamber 78 through another opening (not shown).

In the liquid-sealed engine mount device 10 of this example, the liquid L flows from the main liquid chamber 77 to the sub liquid chamber 78 through the orifice passage 60 or vice versa with respect to a low frequency vertical vibration input. The input vibration is effectively damped by energy absorption based on the viscous flow at that time.
The damping action is highest when the liquid L causes liquid column resonance. In this example, the frequency of the liquid column resonance is tuned with respect to a low frequency vibration input of about 10 to 20 Hz such as a shake.

  In the liquid seal type engine mount device 10, when the vibration input in the vertical direction with a higher frequency is applied, the liquid L does not substantially flow through the orifice passage 60, that is, the orifice passage 60 is substantially closed. When the vibration input has a high frequency and a small amplitude, the fluctuation of the hydraulic pressure in the main liquid chamber 77 based on the vertical movement of the mounting bracket 36 and the main body rubber portion 34 is caused by the vertical elasticity of the movable plate 62. Absorbs by displacement or elastic deformation.

  In this embodiment, as shown in FIG. 2, the bent portion 30 on the upper end side of the cylindrical cylindrical portion 22 in the bracket 14, specifically, a part in the circumferential direction thereof corresponds to a stopper rubber portion 82 described later. A stopper receiving portion 80 is formed.

  On the other hand, at an intermediate position in the axial direction (vertical direction) of the main rubber part 34 in the rubber elastic body 32, specifically, at an intermediate position between the mounting bracket 36 on the engine side and the stopper receiving part 80 of the cylindrical part 22, A plate-like bounce-side stopper rubber portion 82 is integrally vulcanized.

Here, the stopper rubber portion 82 extends from the main rubber portion 34 to the center in the vehicle width direction in the right direction in the drawing, that is, in the direction perpendicular to the axial direction of the main rubber portion 34 (the direction perpendicular to the axis). The stopper rubber portion 82 is formed integrally with the rubber portion 34 and is opposed to the stopper receiving portion 80 in the axial direction, that is, in the vertical direction at a predetermined interval.
Here, the stopper rubber portion 82 has its tip positioned substantially at the same position as the outer peripheral position of the cylindrical portion 22.

The bounce-side stopper rubber portion 82 abuts against the stopper contact portion 84 on the bracket 44 side when the engine-side bracket 44 is greatly displaced downward, and acts as a stopper. Act to regulate.
At this time, the load acting on the stopper rubber portion 82 from the bracket 44 is received by the stopper receiving portion 80.

Next, a method for manufacturing the liquid ring engine mount device 10 will be described below.
In the manufacturing method of the present embodiment, the insulator body 12 is first manufactured and prepared in advance.
At this time, the rubber elastic body 32 in the insulator body 12 is integrally vulcanized and bonded together with the mounting bracket 36 and the annular bracket 56 in the groove forming portion 54 to obtain an integrated vulcanized product 76.
Thus, when the vulcanized product 76 is vulcanized and molded, the plate-like stopper rubber portion 82 is vulcanized and molded integrally with the main body rubber portion 34.
After obtaining the integral vulcanized product 76 as described above, the liquid seal unit 79 is then assembled to the vulcanized product 76 in the liquid. Here, a liquid-sealed insulator body 12 comprising a vulcanized product 76 enclosing the liquid L and a liquid-sealing unit 79 is obtained.

  Next, the mounting bracket 72 as the second mounting member is mounted as the first mounting member through the opening on the side opposite to the bent portion 30 of the cylindrical cylindrical portion 22, that is, on the side opposite to the stopper receiving portion 80. The insulator main body 12 is press-fitted into the cylindrical portion 22 from the side of the metal fitting 36, and the insulator main body 12 is assembled to the bracket 14. At this time, if the stopper rubber portion 82 is extended from the main body rubber portion 34 in the direction perpendicular to the axis, the stopper rubber The portion 82 interferes with the stopper receiving portion 80, or is sandwiched between the stopper receiving portion 80 and the mounting bracket 72 having a large dimension in the direction perpendicular to the axis. The press-fitting position cannot be satisfactorily pressed.

Therefore, in the manufacturing method of the present embodiment, the assembly of the insulator body 12 and the bracket 14 is performed as follows.
In the manufacturing method of the present embodiment, first, as shown in FIG. 4, a press-fitting preparation step is performed prior to press-fitting.
Here, a positioning jig for positioning the angular position around the axis of the main body rubber portion 34 with respect to the press-fitting jig 90 described later when the insulator main body 12 is press-fitted into the insertion space 42 inside the mounting bracket 36 on the engine side. 86 is inserted as an insertion member, and the stopper rubber portion 86 is elastically bent and deformed as a whole and held by the positioning jig 86.

The positioning jig 86 is formed by aligning a positioning surface 94 composed of left and right flat end surfaces with a positioning surface 92 of a pair of flat inner wall surfaces facing each other of the press-fitting jig 90 having a recess 88 inside. The angular position of the insulator body 12 around the axis is determined. Here, the positioning jig 86 is divided into two block-shaped divided bodies 86-1 and 86-2 in the horizontal direction in the drawing, that is, in the insertion direction into the insertion space 42. The divided bodies 86-1 and 86-2 are fixed to each other by a magnet (fixing means) (not shown).
The recess 88 is provided with a slide groove 91 as shown in FIG. 5B, and the bottom surface of the slide groove 91 is the positioning surface 92 described above.

The positioning jig 86 is inserted into the insertion space 42 inside the mounting bracket 36, and the large portion 98 is positioned outside the insertion space and is larger than the opening at each end of the mounting bracket 36. , 100, and the insertion portion 96 and one large portion 98 are constituted by the divided body 86-1, and the other large portion 100 is constituted by the whole divided body 86-2. Yes.
The divided bodies 86-2 and 86-1 are concavo-convex fitting between the fitting concave portion 102 and the fitting convex portion 104, and their relative positions are located at predetermined positions by the concavo-convex fitting. It is supposed to be retained.

The positioning jig 86 can be positioned with high accuracy because the positioning surface 94 is provided on the large-sized portions 98 and 100.
For this purpose, the positioning jig 86 is divided into divided bodies 86-1 and 86-2 and assembled in the insertion space 42 inside the mounting bracket 36 in an inserted state.

The positioning jig 86 is provided with a groove 106 as a holding portion on the side of one divided body 86-2 from the upper surface in the drawing, that is, downward from the stopper rubber portion 82 side.
Here, as shown in FIG. 4, the stopper rubber portion 82 is entirely elastically bent and deformed so that the entirety of the stopper rubber portion 82 is positioned inward of the stopper receiving portion 80 of FIG. In this state, the stopper rubber portion 82 is held in an elastic bending deformation state by inserting the tip portion into the groove 106.

When the above press-fitting preparation process is completed, the press-fitting process is performed next.
In this press-fitting process, the cylindrical portion 22 in the bracket 14 is set on the press-fitting jig 90 with the bent portion 30 facing down.
At this time, the pair of outer side surfaces in the width direction of the displacement restricting portion 20 having a gate shape are fitted to the positioning surfaces 110 of the flat inner wall surfaces of the second recess 108 of the press-fitting jig 90 facing each other. The restriction portion 20, that is, the entire bracket 14 is positioned with respect to the press-fitting jig 90 at an angular position around the axis.

  In this state, the insulator body 12 is inserted into the cylindrical portion 22 with the mounting bracket 36 facing downward, and as shown in FIG. 5, the ring-shaped pusher 112 serves as a second mounting member. The mounting bracket 72 having a large diameter is inserted into the above-described recess 88 of the press-fitting jig 90, more specifically, the slide groove 91 in a positioned state while the positioning jig 86 is inserted downward. It press-fits into the shape part 22.

  At this time, the insulator body 12 is set in a state where the angular position of the insulator body 12 is pre-positioned with respect to the press-fitting jig 90 by positioning the angular position around the axis with respect to the press-fitting jig 90 by the positioning jig 86. The bracket 14 is press-fitted into the cylindrical portion 22 while maintaining an appropriate relative positional relationship set in advance.

In this press-fitting step, the stopper rubber portion 82 is entirely held in a state of elastic bending deformation at a position on the inner side in the direction perpendicular to the axis from the stopper receiving portion 80 as shown in FIG. 82 does not interfere with the press-fitting, and the fitting rubber 72 can be passed through the stopper portion 80 without causing any trouble with respect to the tubular portion 22 while smoothly passing through the inside of the stopper receiving portion 80 downward in the figure. It is possible to press fit well.
FIG. 6 shows a state in which the mounting bracket 72 is press-fitted into the tubular portion 22 to the final press-fitting position in this way.

When the press-fitting process is completed as described above, the insulator body 12 and the bracket 14 are then removed from the press-fitting jig 90 upward in FIG. 6, and the stopper rubber portion 82 in an elastic bending deformation state is removed from the positioning jig 86. The shape is restored by extracting from the groove 106, and the positioning jig 86 is taken out from the insertion space 42 of the mounting bracket 36.
Here, the assembly of the insulator main body 12 and the bracket 14 shown in FIG. 2, that is, the liquid-sealed engine mount device 10 shown in FIG. 1 is obtained.

  As described above, according to the manufacturing method of the present embodiment, the stopper rubber portion 82 can be previously vulcanized and molded integrally with the main body rubber portion 34, thereby reducing the number of rubber vulcanized products, A process of assembling a separate stopper rubber portion by retrofitting is unnecessary, and the cost of the engine mount device 10 can be reduced.

  In the manufacturing method of the present embodiment, the groove 106 is provided in the positioning jig 86 to form a holding portion, and the tip end side of the stopper rubber portion 82 is fitted and held therein. It can be configured easily, and the stopper rubber portion 82 can be easily held simply by fitting the tip end side of the stopper rubber portion 82 there, and the tip end side of the stopper rubber portion 82 can be easily extracted from there. Can be released.

  The positioning jig 86 has a holding portion exposed to the outside of the mounting bracket 36, and it is only necessary to hold the stopper rubber portion 82 there. Therefore, a work for holding and a work for releasing the holding can be performed. It becomes easy.

  Further, the positioning jig 86 is divided in the direction of insertion into the mounting bracket 36, and the respective divided bodies 86-1 and 86-2 are fixed by fixing means. 36 can be projected outside and exposed to each other, and each end can be formed into a large-sized portion 98, 100 larger than the opening of the mounting bracket 36. The positioning member 86 can be firmly attached to the mounting bracket 36 in an inserted state so as to sandwich the mounting bracket 36.

  Further, in the engine mount device 10 of the present embodiment, since the stopper rubber portion 82 is integrally vulcanized with the main body rubber portion 34, a separate stopper rubber portion conventionally used is not required, and the engine mount device In addition to being able to reduce the cost required for the bracket 10, the bent portion 30 of the cylindrical portion 22 of the bracket 14 itself forms the stopper receiving portion 80, which is conventionally required for attaching a separate stopper rubber portion. The additional member that has been used can be eliminated, and the required cost can be further reduced.

Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, in the present invention, the holding portion on the insertion member side that holds the stopper rubber portion 82 can be provided in a form other than the groove, and in the above embodiment, the insertion member is divided into two in the insertion direction. Although each divided body is fixed by the fixing means, in the present invention, the insertion member may be formed as a single unit without using such a divided structure in some cases.
Moreover, although the said embodiment is an example in case a vibration isolator is a liquid seal type engine mount apparatus, this invention is applied with respect to the vibration isolator other than an engine mount apparatus, or the vibration isolator which is not liquid seal type. Is also possible.
Moreover, in the said embodiment, although the curved part itself provided in the cylindrical cylindrical part is comprised as a stopper receiving part, an additional member is attached to the axial direction outer surface of the curved part depending on the case, and these additional members and The present invention can be configured and implemented in various forms and modes without departing from the gist of the present invention, such as the stopper receiving portion can be configured with a part of the bent portion. is there.

DESCRIPTION OF SYMBOLS 10 Engine mount apparatus 12 Insulator main body 14 Bracket 22 Cylindrical part 30 Bending part 34 Main body rubber part 36 Mounting bracket (1st attachment member)
60 Orifice passage 72 Mounting member (second mounting member)
74 Liquid chamber 76 Vulcanized product 77 Main liquid chamber 78 Sub liquid chamber 80 Stopper receiving portion 82 Stopper rubber portion 86 Positioning jig (insertion member)
106 groove

Claims (9)

(A) A main body rubber portion that receives a main vibration input in the axial direction and has an anti-vibration action by elastic deformation, and is fixed to one end side in the axial direction of the main body rubber portion with a cylindrical shape and an opening directed in a direction perpendicular to the axis Further, the first attachment member attached to the supported member side, and the first attachment member and the main body rubber portion attached to the support member side fixed to the other end side in the axial direction of the main body rubber portion. A second mounting member having a large dimension perpendicular to the axis, and an insulator body,
(B) The support member side having a cylindrical portion in which both ends in the axial direction have an opening shape and a stopper receiving portion projecting inward in the direction perpendicular to the axis is provided on one end side in the axial direction on the first mounting member side. With the bracket
The second mounting member of the insulator body is press-fitted into the cylindrical portion from the first mounting member side through an opening opposite to the stopper receiving portion of the cylindrical portion in the axial direction and assembled. A method of manufacturing a vibration device,
Preparing the insulator body;
Press fitting the second mounting member into the tubular part, and assembling the insulator body and the bracket;
In the step of preparing the insulator main body, the rubber body portion is moved from the main body rubber portion to the stopper receiving portion at an intermediate position in the axial direction between the stopper receiving portion and the first mounting member under the assembled state to the bracket. The stopper rubber part extending to the position facing the axial direction is vulcanized and molded integrally with the main body rubber part,
In the assembling step, an insertion member is inserted into the first mounting member, and the stopper rubber portion is elastically bent and deformed so that the entirety is located on the inner side perpendicular to the stopper receiving portion, A press-fitting preparation step for holding the holding portion of the insertion member;
After the press-fitting preparation step, a press-fitting step of press-fitting the second mounting member into the cylindrical portion;
After the press-fitting step, the stopper rubber portion that has come out of the cylindrical portion by press-fitting is released from being held by the holding portion, and is restored in shape to a position facing the stopper receiving portion in the axial direction. A step of positioning;
A method of manufacturing a vibration isolator, wherein assembly is performed via   2. The anti-vibration device according to claim 1, wherein the holding portion is a groove provided in the insertion member, and the tip end side of the stopper rubber portion is fitted and held in the groove. Method.   3. The vibration isolator according to claim 1, wherein the insertion member is inserted into the first mounting member in a state where the holding portion is exposed to the outside of the first mounting member. Production method.   4. The prevention according to claim 1, wherein the insertion member is divided into a plurality of parts in the direction of insertion into the first mounting member, and the respective divided bodies are fixed by fixing means. A method of manufacturing a vibration device.   5. The vibration isolator manufacturing method according to claim 1, wherein the insertion member is a positioning member that positions the insulator body at an angular position around an axis with respect to the cylindrical portion during press-fitting. 6. Method.   In any one of Claims 1-5, the said vibration isolator has a liquid chamber inside the said insulator main body, this liquid chamber is divided into the main liquid chamber and the sub liquid chamber by the partition member, A method for manufacturing a vibration isolator, which is a liquid seal type engine mount device that damps vibrations by liquid flowing between the main liquid chamber and the sub liquid chamber through an orifice passage. (A) A main body rubber portion that receives a main vibration input in the axial direction and has an anti-vibration action by elastic deformation, and is fixed to one end side in the axial direction of the main body rubber portion with a cylindrical shape and an opening directed in a direction perpendicular to the axis Further, the first attachment member attached to the supported member side, and the first attachment member and the main body rubber portion attached to the support member side fixed to the other end side in the axial direction of the main body rubber portion. A second mounting member having a large dimension perpendicular to the axis, and an insulator body,
(B) The support member side having a cylindrical portion in which both ends in the axial direction have an opening shape and a stopper receiving portion projecting inward in the direction perpendicular to the axis is provided on one end side in the axial direction on the first mounting member side. With the bracket
The second mounting member of the insulator body is assembled by being press-fitted into the cylindrical portion from the side of the first mounting member through an opening opposite to the stopper receiving portion of the cylindrical portion in the axial direction,
The main body rubber portion has a stopper rubber extending from the main body rubber portion to a position facing the stopper receiving portion in the axial direction at an intermediate position in the axial direction between the stopper receiving portion and the first mounting member. An anti-vibration device characterized in that the parts are integrally vulcanized.   8. The cylindrical portion according to claim 7, wherein one end side in the axial direction on the first mounting member side is a bent portion inward in the direction perpendicular to the axis, and the bent portion itself forms the stopper receiving portion. Anti-vibration device characterized by   A liquid chamber is provided inside the insulator body, the liquid chamber is partitioned into a main liquid chamber and a sub liquid chamber by a partition member, and the liquid inside is interposed between the main liquid chamber and the sub liquid chamber through an orifice passage. 9. The vibration isolator according to claim 7, wherein the vibration isolator is a liquid ring type engine mount device that dampens vibrations by flowing at a low pressure.

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