JPH10331979A - Gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable surface treatment of a plate main body and seal it securely by deformably providing a plurality of projection parts which protrude from a surface of the plate main body having a seal part which seals a section between sealed members. SOLUTION: A seal part is baked and bonded in a bonding hole of a plate main body 2 formed in a gasket. Moreover, two projection parts 4 are formed each on both sides in the longitudinal direction of the seal part. When an end face 4b of the projection part 4 is brought into pressure-contact between mounting members, it is elastically deformed to the same thickness as that of the plate main body 2 by deformation means of a deformation part 4a and a through hole 7, and the seal part is held in a fixed pressure-contact condition to give sealing capacity. Moreover, when many plate main bodies 2 are treated by adhesive, a clearance is formed without fail because there are the projection parts 4 even if each plate main body 2 is overlapped so that a surface of the plate main body 2 can be securely treated by adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a gasket. In particular, the present invention relates to a gasket which prevents defective products from being produced and ensures tight attachment.

[0002]

2. Description of the Related Art As a prior art relating to the present invention, there is a gasket shown in FIG.

FIG. 8 is a plan view of this conventional gasket 50. As shown in FIG. FIG. 9 is a sectional view taken along the line AA of FIG.

In FIG. 8, a gasket 50 includes a plate body 51 formed by stamping a plate. A through hole 52 is formed in the plate body 51. Further, four bolt holes 55 for attaching the plate body 51 to the attachment member are formed.

[0005] A seal portion 53 made of a rubber material is formed on the periphery of the through hole 52. The shape of the seal portion 53 has a cross section as shown in FIG. The seal portion 53 has a seal lip 54 whose outer peripheral surface is baked and adhered to the through hole 52 and protrudes on the inner peripheral side on both axial sides. A gasket is manufactured by molding the seal portion 53.

By the way, in order to form the seal portion 53, a metal plate is stamped to form a plate body 51.
Formed. Next, in order to wash the oil and the like adhering to the surface and then perform the adhesive treatment, a large number of plate bodies 51 are immersed in an adhesive solution and subjected to surface treatment for rust prevention and baking of the seal portion 53 during molding. There is a need.

[0007]

However, in this adhesive treatment step, since the plate bodies 51 are adhered to each other, there is a problem that the adhesive treatment is not performed on the adhesion surface.
For this reason, there are also problems that the surface treatment of the rust prevention is incomplete and the seal portion 53 is peeled off. In addition, in the surface treatment, there is a problem that the surface treated with the adhesive is adhered and the surface treatment becomes incomplete.

In order to prevent this, it is conceivable to provide a convex portion 56 on the plate body 51 as shown in FIG. However, when the convex portion 56 is provided, the concave portion 61 must be formed at a position corresponding to the convex portion 56 in the mounting member 60 for mounting the gasket 50 as shown in FIG.

However, the mounting member 60 has various structures, and it is extremely difficult to process the concave portion 61 corresponding to the convex portion 56.

The present invention has been made in view of the above problems, and a technical problem thereof is to enable a surface treatment even when plate bodies overlap each other.

Further, when the gasket is press-fitted to the mounting members, the sealing portion 53 can exert its ability by securely pressing even if there is variation between the mounting members and the thickness of the plate body 51.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the technical means thereof are configured as follows.

According to a first aspect of the present invention, there is provided a gasket for sealing between members to be sealed, wherein the plate body (2) disposed between the members to be sealed and treated with an adhesive; And a plurality of projections (4) protruding from the surface of the plate body (2), and the projections (4) are formed by the sealing member. This is a gasket provided in a deforming means (8) that deforms to the surface of the plate body (2) when pressed.

According to a second aspect of the present invention, the deforming means (8) of the protrusion (4) has a through hole (7) at the center of the deformed portion (4a) which is tapered. Gasket.

According to a third aspect of the present invention, there is provided the gasket according to the second aspect, wherein a slit (10) is provided radially from the through hole on the tip end side of the projection (4).

According to a fourth aspect of the present invention, there is provided the gasket according to the first aspect, wherein the projection (4) is formed as a cantilever spring (4c) projecting obliquely from the surface of the plate body (2). .

[0017]

The plate body (2) of the present invention has a projection (4).
Is provided, even if a plurality of plate bodies (2) are stacked, a gap is formed by the projections (4), so that an adhesive treatment or a surface treatment can be performed from this gap.

When the gasket (1) is clamped by the member to be sealed, the projection (4) is elastically deformed and pressed, and
Even if the gap between the members to be sealed is larger than the thickness of the plate body (2), it is fixed by pressure by the projection (4). Further, it is possible to prevent the seal portion from being pressed more than necessary.

[0019]

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

FIG. 1 is a plan view of a gasket showing one embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. FIG. 3 is a sectional view taken along line BB of FIG.

In FIG. 1, reference numeral 1 denotes a gasket. The gasket 1 has a plate body 2 provided with an adhesive hole 6 in the center. The plate body 2 has bolt holes 5 at four locations. The planar shape of the plate main body 2 is formed according to the shape of a member to be sealed (hereinafter, referred to as an attachment member). The thicknesses of the plate body 2 and the seal portion 3 are formed as shown in the cross section of FIG.

The seal portion 3 is baked and bonded to the bonding hole 6 of the plate body 2 by molding. The shape of the seal portion 3 is as shown in FIGS. The seal portion 3 is made of a rubber material, and forms a seal lip 3 on both sides of the plate main body 2 with the inner peripheral surface protruding. The outer peripheral surface is bonded to the bonding hole 6 of the plate body 2 by baking.

On both sides in the longitudinal direction of the seal portion 3 in FIG.
Individual projections 4 are formed. Although two projections 4 are formed on both side surfaces, three or four projections 4 may be formed on one side surface.

FIG. 3 is a sectional view of the projection 4. In FIG. 3, the protrusion 4 is formed on a deformed portion 4a formed in a tapered shape having a thinner center side and an end face portion 4b formed in the center of the deformed portion 4a. Then, a through hole 7 is formed in the end face.
Is provided, the through hole 7 and the deformed portion 4a constitute the deforming means 8.

FIG. 4 is a sectional view showing a state in which the protrusion 4 is compressed and elastically deformed between the mounting members and is formed on substantially the same plane as the thickness of the plate body 2.

In FIG. 4, when the end face 4b of the projection 4 is brought into pressure contact between the mounting members, the thickness of the plate body 2 is made equal to the thickness of the plate body 2 by the deformation means 8 between the deformation portion 4a and the through hole 7. Elastically deform. When there is variation in the thickness dimension of the plate body 2 and the gap dimension between the mounting members,
The gasket is mounted between the mounting members by the pressure contact force of the projections 4, and the seal portion 3 can be maintained in a fixed pressure contact state, thereby exerting the sealing ability of the seal portion 3.

The plate body 2 has an adhesive treatment step as a pre-step before the surface treatment step for rust prevention and the molding step.
In this adhesive processing step, a large number of plate bodies 2 are put into an adhesive processing tank to perform the adhesive processing.

At this time, the conventional flat plate body 5
In the case of No. 1, since the flat surfaces of the respective plate bodies 51 are adhered to each other, if the next rust preventive treatment is carried out in a state where the joint surface is not subjected to the adhesive treatment, the rust preventive treatment becomes insufficient, resulting in a defective product. Further, even during molding, the molded product and the plate body 51 cause poor adhesion by baking, so that the seal portion 53 is peeled off from the plate body 51.

FIG. 5 is a cross-sectional view of each projection 4 in a state where the plate body 2 of the present invention is put into an adhesive treatment tank and the plate body 2 is layered.

In FIG. 5, the plate bodies 2 are overlapped.
Is formed. Therefore, each plate body 2
The surface can be reliably treated with an adhesive, and it is possible to effectively prevent the occurrence of defects in the rust prevention treatment and the molding baking.

FIG. 6 is a sectional view of a projection 4 of a gasket showing a second embodiment according to the present invention.

In FIG. 6, a plurality of slits 10 are formed radially from the through hole 7 side in the elastically deforming portion 4a of the projection 4. The slit 10, the elastically deformable portion 4 a, and the through hole 7 constitute a deforming means 8.

FIG. 7 is a sectional view of a projection of a gasket 1 showing a third embodiment according to the present invention.

In FIG. 7, the projection 4 is formed on an inclined cantilever spring 4c. The cantilever spring 4c is obtained by cutting three sides of the plate body 2 and inclining the free end side with the support portion 4d as a fulcrum. This cantilever spring 4c constitutes the deformation means 8. The cantilever spring 4c
Is formed at the corner 4e.

When the cantilever spring 4c is pressed by the mounting member, it becomes flush with the plane portion of the plate body 2, so that the pressure contact state of the seal portion 3 can be adjusted to exhibit the optimum sealing ability. it can.

Also, in the adhesive treatment tank, since each plate body 2 is not joined in a plane because the corners 4e of the cantilever springs 4c only come into contact with each other, the plate body 2 is subjected to the adhesive treatment. A rust prevention process and a molding process are performed.

[0037]

Since the gasket of the present invention has the deforming means, even if the set gap of the mounting member and the thickness dimension of the plate body vary, the gasket can be joined between the mounting members. Then, the seal portion can be hermetically joined to the mounting member at a constant surface pressure, and the effect of exerting the sealing ability of the seal portion can be achieved.

In the gasket of the present invention, the plate body is subjected to an adhesive treatment for rust prevention and adhesion of the seal portion.
At this time, it is possible to prevent the close contact joining of the plate bodies by the projections, and effectively prevent the seals from peeling off during operation and causing seal leakage.

The gasket according to the second aspect of the present invention has a configuration in which the projection has a tapered elastically deforming portion and an end surface portion, and has a through hole in the center. It can be expected that the sealing part can be optimally joined and the sealing ability can be exerted without the need for pressure bonding up to the thickness of the plate main body.

According to the gasket of the third aspect of the present invention, since the elastically deformable portion is provided with a slit from the side of the through-hole, an elastically deformable force is applied to the projection, and the mounting member can be easily joined to the plate body. Can be expected.

According to a fourth aspect of the present invention, the processing of the projection is extremely simple, and furthermore, the plate body is prevented from overlapping in the adhesive treatment step, and the rust prevention effect during use is ensured by the adhesive treatment. At the same time, an effect of preventing the peeling of the seal portion can be expected.

[Brief description of the drawings]

FIG. 1 is a plan view of a gasket showing a first embodiment according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is a cross-sectional view showing a projection in a state where the gasket of FIG. 1 is pressed between mounting members.

FIG. 5 is a cross-sectional view showing a projection in a state where a plurality of plate bodies of the present invention are overlapped during adhesive processing.

FIG. 6 is a cross-sectional view of a protrusion showing a second embodiment according to the present invention.

FIG. 7 is a sectional view of a protrusion showing a third embodiment according to the present invention.

FIG. 8 is a plan view of a conventional gasket.

FIG. 9 is a sectional view taken along the line AA of FIG. 8;

FIG. 10 is a sectional view of a projection of a conventional gasket.

FIG. 11 is a cross-sectional view showing a projection in which the gasket of FIG. 10 is mounted on a mounting member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gasket 2 Plate main body 3 Seal part 4 Projection part 4a Deformation part 4b End face part 4c Cantilever spring 4d Support part 4e Corner part 5 Bolt hole 6 Adhesion hole 7 Through hole 8 Deformation means 10 Slit 11 Taper part 50 Gasket 51 Plate body 52 Through-hole 53 Seal part 54 Seal lip 55 Bolt hole 56 Convex part 60 Mounting member 61 Recess

Claims (4)

[Claims] 1. A gasket for sealing between members to be sealed, said plate being disposed between said members to be sealed and treated with an adhesive, said gasket being adhered to said plate body (2). A sealing portion (3) for sealing between the members to be sealed; a plurality of projections (4) projecting from the surface of the plate body (2); and the projections (2) being formed by the member to be sealed. A gasket characterized in that the projection (4) is configured as a deforming means that deforms to the surface of the plate body (2) when pressed. 2. A through hole (7), wherein a deformation means (8) of the projection (4) has a deformation part (4a) formed in a tapered shape that becomes thinner toward the front end side and penetrates the front end part.
The gasket according to claim 1, wherein the gasket is configured as follows. 3. The gasket according to claim 2, wherein a slit (10) is provided radially from a side of the through hole (7) on a protruding portion side of the protruding portion (4). 4. The gasket according to claim 1, wherein said projection (4) is formed as a cantilever spring (4c) projecting obliquely from said plate body (2).