JP2518343Y2 - gasket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a gasket assembled to, for example, a cylinder head or an exhaust pipe of an automobile.

(Prior Art) FIG. 5 shows a conventional gasket G of this type.

That is, a seal ring 101 made of a rubber-like elastic material is baked and fixed to the inner peripheral edge of the annular metal fitting plate 100.
Further, the seal ring 101 is provided with a protrusion 102 that protrudes from the surface of the metal plate 100 at a predetermined height in the thickness direction. In this way, the protrusion G is provided with the gasket G.
This is because when the two are assembled between the two members, the projecting portions 102 first come into contact with the mating members and elastically deform and come into close contact with each other to ensure the hermeticity.

By the way, in the manufacturing process of the gasket G, after the metal plate 100 itself is put into the adhesive liquid (agent) and the adhesive liquid is applied, the gasket G is placed in the cavity of a mold (not shown) and molded by vulcanization. The material rubber is glued.

Further, as shown in FIG. 5, the gasket G manufactured in this manner is conveyed while being stacked, and is placed near the assembling step.

(Problems to be solved by the invention) However, in the above-mentioned conventional example, when a plurality of gaskets G are stacked as shown in FIG. Concavities and convexities penetrate into each other, and the wedge effect creates a seal ring 10
1 sticks together. As a result, there is a problem that the workability of assembling the gasket G is reduced.

Here, in order to avoid that the surfaces of the metal fitting plate 100 are in surface contact with each other when the metal fitting plate 100 is put into the adhesive liquid and are bonded by the adhesive liquid as shown in FIG. 6, the metal fitting plate 10
Although it was attempted to provide a protrusion on the surface of 0, the height was not sufficient, and it was not possible to avoid sticking between the baked seal rings 101.

This invention is to solve the above problems, and provides a gasket that can prevent surface contact between metal fitting plates when a metal fitting plate is a single body, and can also prevent surface contact between seal rings fixed to the metal fitting plate. Is intended.

(Means for Solving the Problem) In order to achieve the above object, the present invention provides a rubber having a protruding portion protruding from the surface of the annular metal plate at a predetermined height in the thickness direction from the peripheral edge of the metal plate. In a gasket provided with a seal ring made of elastic material, a protrusion having a height that is more than twice the height of the protrusion of the seal ring is provided on the surface of the metal plate.

(Operation) In the present invention based on the above configuration, in the state of the metal plate alone before fixing the seal ring, the projections make point contact with the surfaces of the metal plate facing each other. Further, even when the metal plate and the seal ring are integrated, the protrusions only make point contact with the surfaces of the metal plates facing each other.
The opposing seal rings do not contact each other.

(Example) Next, this invention is demonstrated based on an accompanying drawing.

FIG. 2 shows a plan view of the gasket 1 of the present invention. A seal ring 3 made of a rubber-like elastic material is baked and fixed to the inner peripheral edge of the metal fitting plate 2 formed in a predetermined shape to form a fluid passage 4. Further, as shown in FIG. 1, the metal plate 2 is provided on the front and back of the seal ring 3.
The protrusion 5 is provided so as to protrude from the surface thereof by a predetermined height H _{1 in} the thickness direction.

On the surface of the metal plate 2, the one protrusion 5 is formed.
A plurality of protrusions 6 having a height H ₂ which is more than twice the height H ₁ of The protrusion 6 may project upward as shown in FIG. 1 (cross-sectional view taken along the line AA in FIG. 2) or downward as shown in FIG. 3 (cross-sectional view taken along the line BB in FIG. 2). You may project toward. Since the protrusion 6 is formed when the metal plate 2 is pressed,
Recesses 7 are formed on the back surfaces of the protrusions 6, respectively. Accordingly, the height H ₂ can be retracted to the inside recess 7 of the metal plate 2 the upper end of the protrusion 6 of the fitting plate 2 positioned on the lower side in a laminated state gasket 1 is positioned on the upper side as shown in FIG, It is necessary to set the dimensions such that the protrusions 5 of the seal ring 3 do not contact each other.

In the manufacturing process of the gasket 1 having the above-described structure, a large number of metal plates 2 are put into the adhesive liquid (agent) at a time in the state of the metal plate 2 alone. Since it makes point contact with the surface,
The adhesive liquid does not adhere to each other. Therefore, the adhesion processing operation can be performed quickly.

Further, the metal fitting plate 2 is placed in a cavity of a mold (not shown), and fluid rubber is injected and solidified to fix the seal ring 3 to the inner peripheral edge of the metal fitting plate 2 as shown in FIG. Even when a plurality of gaskets 1 are stacked and conveyed or placed near the assembling process, the seal rings 3 are not in contact (adhesive) with each other only when the protrusions 6 are in contact with the metal plate 2 facing each other. Absent. Therefore, the work of assembling the cylinder head or the exhaust pipe of the automobile can be performed quickly.

Furthermore, since the protrusions 6 are recessed in the recesses 7, the stacked gaskets 1 will not be displaced in the horizontal direction.

Furthermore, although the projection 6 projects in a considerable thickness direction,
Since the mating member on which the gasket 1 is assembled is provided with a recess corresponding to the protrusion 6 or is provided with a relief, there is no gap between the seal ring 3 and the mating member, and the sealing performance is improved. Can be secured.

The protrusion 6 may have a shape as shown in FIG.

(Effects of the Invention) Since the present invention is configured as described above, the surfaces of the metal plate do not adhere to each other when the metal plate is used alone, and the protrusions of the metal plate also adhere to each other even when the seal ring is fixed. However, there is an effect that the workability of assembling the mating member is improved.

[Brief description of drawings]

Fig. 1 is a cross-sectional view taken along line AA of Fig. 2 in which a plurality of gaskets of the present invention are stacked, Fig. 2 is a plan view showing the gasket of the present invention, and Fig. 3 is taken along line BB of Fig. 2. Sectional view, FIG. 4 is a sectional view showing another example of the configuration of the protrusion of the gasket of the present invention, FIG. 5 is a sectional view of the main part of a conventional gasket, and FIG. 6 is a gasket metal plate alone of FIG. FIG. 3 is a cross-sectional view showing a bonded state of FIG. REFERENCE NUMERALS 1 ...... gasket, 2 ...... bracket plate 3 ...... seal ring 4 ...... fluid passage 5 ...... protrusion 6 ...... projections 7 dents ......, H ₁ ...... protruding height of the section H ₂ ...... Height of protrusion

Claims (1)

(57) [Scope of utility model registration request] 1. A gasket comprising a ring-shaped metal fitting plate provided with a seal ring made of a rubber-like elastic body on a peripheral portion of the metal fitting plate, the projection ring protruding from the surface of the metal fitting plate at a predetermined height in the thickness direction. A gasket characterized in that a protrusion having a height that is more than twice the height of the protrusion of the seal ring is provided on the surface of the metal plate.