JP2000046193A - Vibration control gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide heat resistance and sour resistance besides sealing performance for the installing plate side of the heat source member side, and to provide a vibration control characteristic as a whole by respectively fixing a first installing plate for inserting/installing a rubber seal member to a mating face of a heat source side member and a second installing plate to a mating face of a non-heat source side member in close contact with each other. SOLUTION: A vibration control gasket is provided with metallic or resin long size plate-like first installing plate 10 and second installing plate 20, a vibration control rubber elastic body for elastically connecting both installing plates 10, 20 oppositely arranged at prescribed intervals and a rubber seal member 40 inserted/installed in the first installing plate 10. The rubber seal member 40 is formed of a rubber material having excellent sealing performance and having heat resistance and sour resistance, the annular seal ring parts 41a to 41d adjusted to the respective groove parts, the linear connecting rod parts 42a to 42c, the linear projecting part 41e and the projecting part 41f are arranged and integrally formed on the same plane, and the cross section is formed into a circular shape having the same outside diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration gasket for a vehicle, and more particularly to a vibration-proof gasket suitable for connecting between a heat source side member such as an intake port of an engine and a non-heat source side member such as an intake manifold. Related to anti-vibration gaskets.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 6 and 7, for example, a vibration-proof gasket of this type is a long plate made of metal or resin, and has a plurality of through holes 2 arranged in the longitudinal direction. And a long plate made of metal or resin opposed to the first mounting plate 1 at a predetermined distance from the first mounting plate 1, and having through holes 4 at positions facing the plurality of through holes 2. An anti-vibration device having a second mounting plate 3 and a ventilation hole 6 provided between the first and second mounting plates 1 and 3 for elastically connecting the two and connecting the respective through holes 2 and 4 to each other. Rubber elastic body 5 and the first
And a thin rubber elastic body sealing portion 7 provided on the outer surface side of the second mounting plates 1 and 3. In this anti-vibration gasket, a first mounting plate 1 is fixed to a flange portion at a tip of an intake pipe extending from an intake port provided in a cylinder of an automobile engine, and a second mounting plate 2 is connected to an intake duct or the like. It is used by being fixed to the flange portion of the intake manifold to be used. As a result, the vibration isolating gasket functions to reduce engine vibration transmitted from the intake pipe side, suppress radiation noise generated from the intake manifold, and increase reliability of intake system components such as the throttle body.

[0003]

In the above-mentioned vibration-proof gasket, a rubber vibration-proof elastic body 5 for performing a vibration-proof function and a rubber elastic-body seal portion 7 for performing a sealing function with a mating member are formed by rubber. Both rubber materials must be the same because they are integrally formed by sulfur molding. However, the rubber material suitable for exhibiting the vibration-proof function is different from the rubber material having excellent sealing properties, and the rubber materials of the same material cannot simultaneously exhibit both functions properly. In particular, because the engine mating surface gets hot,
It is necessary that the rubber material of the seal portion has both heat resistance and sour resistance (gasoline resistance), and therefore, there is a problem that the vibration isolating characteristics are restricted. The present invention is intended to solve the above problem, the mounting plate side attached to the heat source side member has heat resistance and sour resistance together with sealing,
It is another object of the present invention to provide an anti-vibration gasket having proper anti-vibration characteristics as a whole.

[0004]

Means for Solving the Problems and Effects of the Invention In order to achieve the above object, a structural feature of the invention according to claim 1 is a metal or resin plate, wherein a plurality of through holes are formed. A first mounting plate, which is provided side by side and provided with a seal groove surrounding the vicinity of each through hole on one surface side, and a connecting groove connecting the seal grooves, and the other surface side of the first mounting plate A metal or resin plate facing each other at an interval,
A second mounting plate having a through hole at a position opposed to the plurality of through holes, and a ventilation hole for elastically connecting the first mounting plate and the second mounting plate and providing communication between the respective through holes are provided. A vibration-proof rubber elastic body, a thin rubber elastic body seal portion fixed around each through hole in the outer surface of the second mounting plate, a seal ring portion inserted into the seal groove portion, and a seal ring portion. And a connecting rod portion inserted into the connecting groove portion, and a rubber seal member having heat resistance and sour resistance more than the vibration-proof rubber elastic body and the rubber elastic body seal portion. The attached first mounting plate is tightly fixed to the mating surface of the heat source side member,
The mounting plate is closely fixed to the mating surface of the non-heat source side member.

According to the first aspect of the present invention, the first mounting plate fixed to the mating surface of the heat source side member such as the engine side intake pipe has a seal groove surrounding the through hole. Since the seal ring portion of the rubber seal member having heat resistance and sour resistance is inserted, the sealing property between the mating surface of the heat source side member and the heat source side member is reliably ensured for a long time. Further, since the seal ring portion and the connecting rod portion are integrally connected to the rubber seal member, the rubber seal member can be easily attached to the first mounting plate, and the seal ring portion is partially forgotten or dropped. Can be avoided. On the other hand, regarding the vibration-proof function of the vibration-proof gasket, the rubber elastic body connecting the first and second mounting plates is formed by using a material having a proper vibration-proof property separately from the rubber seal member. An appropriate anti-vibration function can be exhibited.

According to a second aspect of the present invention, in the vibration isolating gasket according to the first aspect, the width of the connecting groove is partially smaller than the width of the connecting rod. The width of the connecting rod is partially larger than the width of the connecting groove.

According to the second aspect of the present invention, in addition to the effects of the first aspect, the engagement between the connecting rod portion of the rubber seal member and the connecting groove portion of the first mounting plate is tight. By doing so, the rubber seal member can be temporarily fixed until the anti-vibration gasket is attached to the mating member, and the assembling of the anti-vibration gasket can be easily performed. Can be avoided. Further, by performing the temporary fixing by the connecting rod portion, no unnecessary pressure is applied to the seal ring portion, and the reliability of the seal is not impaired.

According to a third aspect of the present invention, there is provided the vibration isolating gasket according to the first or second aspect, wherein the first mounting plate is provided with a sealing groove near a peripheral edge and a peripheral edge. The rubber seal member is provided with a protruding groove portion extending to the rubber seal member, and a protruding rubber portion which is inserted into the protruding groove portion and is longer than the length of the protruding groove portion.

According to the third aspect of the present invention, as described above, in addition to the effects of the first and second aspects, the presence or absence of the protruding rubber portion allows the vibration isolating gasket to be connected to the mating member. After attaching the rubber seal member, whether or not the rubber seal member is attached can be easily confirmed, and forgetting to attach the rubber seal member can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a cylinder-side intake pipe (heat source-side member) of an automobile engine according to the embodiment. FIG. 1 is a front view and a cross-sectional view showing a vibration-isolating gasket interposed between intake manifolds (non-heat source side members). The vibration-proof gasket is made of a metal- or resin-made long plate-like first mounting plate 10 and a second mounting plate 20.
And two mounting plates 10 and 20 which are arranged facing each other at a predetermined interval.
An anti-vibration rubber elastic body 30 that elastically connects the space therebetween, and a rubber seal member 40 inserted into the first mounting plate 10 are provided.

As shown in FIG. 3 (in a state where the rubber seal member is removed in FIG. 1), the first mounting plate 10 has four circular through holes 11a to 11 having the same diameter at substantially cylindrical intervals between both ends in the longitudinal direction.
d (in order from the left). One end of the first mounting plate 10 in the longitudinal direction (the left end in the drawing) projects outward from both sides in the width direction at the position of the through hole 11a, is formed into a substantially triangular shape symmetrical with respect to the axis, and has a rounded tip. It is the end 12. The other end in the longitudinal direction (the right end in the figure) is a through hole 11d.
Projecting outward from both sides in the width direction at the position, one end side in the width direction (upper end shown) faces a direction inclined by about 80 ° with respect to the axis in the direction of the other end (lower end shown), and the other end side is further outward. The second end portion 13 is formed in a substantially triangular shape and slightly rounded at a direction slightly inclined with respect to the axis. At the tip of the first end portion 12, a mounting hole 12a is provided,
A mounting hole 13 a is provided at the tip of the second end 13.

A connecting portion 14a between the through holes 11a and 11b
Is cut out in a substantially sinusoidal shape from the other end side in the width direction of the first mounting plate 10 to one end side, and its peak position is slightly beyond the axis, and the connecting portion 14a has A mounting hole 14a1 is provided. Through holes 11b, 11c
The connecting portion 14b is cut in a substantially sinusoidal shape from one end side to the other end in the width direction, and its peak position is slightly before the axis, and the connecting portion 14b has a mounting hole. 14b1 are provided. Also, the through holes 11c, 1
The connecting portion 14c between 1d is cut out in a substantially sinusoidal shape from the other end side in the width direction to one end side, and its peak position is slightly beyond the axis, and the connecting portion 14c has A mounting hole 14c1 is provided.

As shown in FIG. 3, the first mounting plate 10 has a ring-shaped sealing groove 15a having the same width at one coaxial position slightly outside the four through holes 11a to 11d on one surface side. To 15d. At a position near the inner end of the connecting portion 14a in the width direction, a connecting groove 16a connecting the seal grooves 15a and 15b is provided in parallel with the axis. The seal groove 15 is located substantially on the axis of the connecting portion 14b.
A connecting groove 16b for connecting b and 15c is provided in parallel with the axial direction. Further, a connecting groove 16c connecting the seal grooves 15c and 15d is provided in the connecting portion 14c near the inner end in the width direction in parallel with the axial direction.
Each of the connection grooves 16a to 16c is provided with a seal groove 15a to 15c.
The narrow portions 16a1 to 16c1 having the same width as d but having a slightly narrower width are provided at the respective intermediate portions in the longitudinal direction.

The first mounting plate 10 has a groove portion slightly inclined with respect to the axis from a position slightly shifted from the axis at one end in the longitudinal direction of the seal groove 15a to the other end in the width direction. 15e is provided. The width of the groove 15e is slightly smaller than the width of the seal groove 15a. Further, the first mounting plate 10 is provided with a protruding groove portion 15f extending axially from the axial position of the seal groove portion 15d toward the other end in the longitudinal direction (one end portion in the longitudinal direction). The width of the protruding groove 15f is slightly smaller than the width of the seal groove 15d.

The second mounting plate 20 has substantially the same shape as the first mounting plate 10, and has a slightly larger diameter than the through holes 11a to 11d at positions corresponding to the four circular through holes 11a to 11d. Circular through holes 21a to 21d (21b to 2b).
1d is not shown). One end of the second mounting plate 20 in the longitudinal direction (the left end in the figure) is a third end 22 that protrudes outward in a substantially semicircular shape within a predetermined range of the one end in the width direction. The other end in the longitudinal direction (the right end in the drawing) protrudes outward from both sides in the width direction at the position of the through hole 11d, and the other end in the width direction (the lower end in the drawing) is approximately one end (the upper end in the drawing) with respect to the axis. 4
The fourth end portion 23 is formed in a substantially triangular shape in which one end side in the width direction is oriented in a direction slightly inclined toward the other end side in a direction inclined at about 5 °, and a tip is rounded. A mounting hole 22a is provided at the tip of the third end 22, and a fourth end 23 is provided.
Is provided with a mounting hole 23a at the front end.

A connecting portion 24a between the through holes 21a and 21b
Is cut out in a substantially sinusoidal shape from one end side to the other end side in the width direction of the second mounting plate 20, and its peak position is slightly beyond the axis, and the connecting portion 24a has A mounting hole 24a1 is provided. Through holes 21b, 21c
The connecting portion 24b is cut out in a substantially sinusoidal shape from the other end to the one end in the width direction, and its peak position is slightly before the axis, and the connecting portion 24b has a mounting hole. 24b1 are provided. Also, the through holes 21c,
The connecting portion 24c between the portions 21d is cut out in a substantially sinusoidal shape from one end side to the other end side in the width direction, and its peak position is slightly beyond the axis.
4c is provided with a mounting hole 24c1.

The vibration-proof rubber elastic body 30 is formed of a rubber material having excellent vibration-proof properties, and as shown in FIG.
It is vulcanized and formed between the first mounting plate 10 and the second mounting plate 20 to elastically connect the two. The vibration-proof rubber elastic body 30 has through holes 11a to 11d and through holes 21a to 21d.
Of the first mounting plate 10 and the second mounting plate 20 are formed in a substantially cylindrical shape concentric therebetween, and the through holes 11a to 11d and the through holes 21a to 21a are formed.
Vent holes 31a to 31d are provided to connect the first and the second vents 1d. The outer surface of the second mounting plate 20 has mounting holes 22a, 2a.
Except for around 3a, 24a1 to 24c1, a seal layer 32 which is a thin rubber layer is formed.

The ring-shaped seal grooves 15a to 15d of the first mounting plate 10, the connection grooves 16a to 16c,
As shown in FIG. 1, a rubber seal member 40 is mounted on the groove 15e and the protruding groove 15f. The rubber seal member 40 is formed of a rubber material having a good sealing property and heat resistance and sour resistance, and as shown in FIG.
1a to 41d and linear connecting rod portions 42a to 42c
And a linear protrusion 41e and a protrusion rubber portion 41f are arranged integrally on the same plane, and have a circular cross section with the same outer diameter.

The rubber seal member 40 is attached to the first mounting plate 10
When inserted into each of the grooves, the cross-sections thereof have the same outer diameter, whereas each of the connecting grooves 16a to 16c has a narrower narrower portion 16a1 to 16a at the middle in the longitudinal direction.
16c1, a groove 15e and a protruding groove 15f.
Is also narrower. Therefore, the rubber seal member 4
0 engages in these narrow groove portions, so that temporary attachment until the vibration-proof gasket is attached to the mating member is reliably performed, and the attachment work is facilitated. In addition, the temporary fixing for narrowing a part of the rubber seal member 40 is performed by the connecting rod portion 42.
a to 42c, the protruding portion 41e, and the protruding rubber portion 41f, thereby performing sealing.
1d without affecting the sealing ring portion 4
The reliability of the sealing performance in 1a to 41d is not impaired.

The anti-vibration gasket having the above structure is, for example, a first
The mounting plate 10 is fixed to a flange (not shown) at the end of an intake pipe extending from an intake port provided in a cylinder of an automobile engine, and the second mounting plate 20 is connected to an intake manifold to which an intake duct or the like is connected. Fixed to a flange (not shown).

The first mounting plate 10 fixed to the intake pipe flange on the high-temperature engine side has through holes 11a to 11a.
Since the seal ring portions 41a to 41d of the rubber seal member 40 having heat resistance and sour resistance are inserted into the seal grooves 15a to 15d surrounding the 11d, the sealing performance between the mating surface of the intake pipe flange and the mating surface. Is ensured for a long time. On the other hand, regarding the vibration-proof function of the vibration-proof gasket, the vibration-proof rubber elastic body 30 that connects the first mounting plate 10 and the second mounting plate 20 is made of a material having a proper vibration-proof property separately from the rubber seal member 40. Since it is formed by using, an appropriate anti-vibration function can be exhibited. Further, since the rubber seal member 40 has the seal ring portions 41a to 41d and the connection rod portions 42a to 42c integrally connected,
The mounting of the first mounting plate 10 in the groove can be easily performed, and it is possible to prevent the part from being forgotten or to be dropped off.
Therefore, the work of mounting the first mounting plate 10 to the mating member is easily performed.

The first mounting plate 10 is provided with a protruding groove 15f extending from the seal groove 15d on the other end in the longitudinal direction to the side edge, and extends from the corresponding seal ring 41d of the rubber seal member 40 to protrude. By providing the protruding rubber portion 41f longer than the length of the protruding groove portion to be inserted into the device, the presence or absence of the protruding rubber portion 41f can be easily checked. Therefore, after attaching the vibration-proof gasket to the mating member, it can be easily checked whether or not the rubber seal member 40 has been attached.
Can be prevented from being forgotten.

The outer shape, material, and the like of the vibration-proof gasket are not limited to those described in the above embodiment.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing an anti-vibration gasket according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the anti-vibration gasket taken along a line II-II shown in FIG.

FIG. 3 is a front view showing a state in which a rubber seal member is removed with the vibration-proof gasket.

FIG. 4 is a cross-sectional view of the anti-vibration gasket taken along a line IV-IV shown in FIG. 3;

FIG. 5 is a plan view showing a rubber seal member.

FIG. 6 is a front view showing a conventional vibration-proof gasket.

7 shows a conventional example of a vibration-isolating gasket shown in FIG.
It is sectional drawing in the VII line direction.

[Explanation of symbols]

10: first mounting plate, 11a to 11d: through hole, 14a to
14c: connecting portion, 15a to 15d: seal groove portion, 15e
... groove, 15f ... protruding groove, 16a-16c ... connecting groove, 16a1-16c1 ... throttle, 20 ... second mounting plate,
21a to 21d: through hole, 30: rubber elastic body, 31
a to 31d: vent hole, 32: seal layer, 40: rubber seal member, 41a to 41d: seal ring portion, 41e: protruding portion, 41f: protruding rubber portion, 42a to 42c: connecting rod portion.

Claims (3)

[Claims] 1. A plate made of metal or resin, in which a plurality of through holes are juxtaposed, and a seal groove surrounding the periphery of each through hole on one surface side is connected to each seal groove. A first mounting plate provided with a connecting groove portion, and a metal or resin plate opposed to the other surface side of the first mounting plate with a space between the first mounting plate and the plurality of through holes. A second mounting plate having a through hole, an anti-vibration rubber elastic body provided with a ventilation hole for elastically connecting the first mounting plate and the second mounting plate and communicating between the respective through holes; (2) a thin rubber elastic seal portion fixed around each through hole on the outer surface of the mounting plate; a seal ring portion inserted into the seal groove portion; The vibration isolating rubber bullet formed by the connecting rod portion inserted into the groove portion. A rubber seal member having more heat resistance and sour resistance than the body and the rubber elastic body seal portion, and the first mounting plate in which the rubber seal member is inserted is tightly fixed to the mating surface of the heat source side member, and An anti-vibration gasket, wherein the second mounting plate is fixed to the mating surface of the non-heat source side member. 2. The vibration isolating gasket according to claim 1, wherein the width of the connecting groove is partially smaller than the width of the connecting rod, or the width of the connecting rod is partially connected to the connecting rod. An anti-vibration gasket characterized by being larger than the width of the groove. 3. The vibration isolating gasket according to claim 1, wherein a projection groove extending from a seal groove near a peripheral edge of the first mounting plate to a peripheral edge is provided, and the projection groove is provided in the projection groove. An anti-vibration gasket, wherein a protruding rubber portion which is inserted and is longer than the length of the protruding groove portion is provided on the rubber seal member.