JP2597827Y2 - gasket - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel gasket interposed between a cylinder head and an exhaust manifold.

[0002]

2. Description of the Related Art As shown in FIG. 5, a steel gasket interposed between a cylinder head 5 and a flange 7 of an exhaust manifold 6 comprises two flat metal plates 1a, 1b constituting a gasket base material. This is a structure in which a spacer material 2 having a bead 3 between them is interposed. Reference numeral 4 denotes a plate interposed between the two spacer members 2.

[0003]

In the above-mentioned conventional gasket, two metal plates 1a, 1a and 1b constituting a gasket base material are used.
b has no strength against bending because the edge of the metal plate 1b is still pressed and cut, and the two metal plates 1a and 1b are separated by the behavior of the flange 7 surface of the exhaust manifold 6.
May move relative to each other and break. Further, a gap is formed between the edges of the metal plates 1a and 1b, and high-temperature exhaust gas enters through the gap to thermally degrade the spacer material 2.

Further, as described above, the metal plates 1a, 1a
Since the edge of b is still cut straight, the edge is an edge, and deburring grind processing is necessary so as not to cut a hand during handling.

It is an object of the present invention to provide a gasket which solves such a conventional problem.

[0006]

In order to achieve the above-mentioned object, the present invention is characterized in that a spacer material having a bead formed between two metal plates constituting a gasket base material is provided.
In a gasket having a mounting bore, an outer peripheral edge of two metal plates of the gasket base material and the bore are provided.
Are provided with flanges formed by bending the outer and inner side edges of the peripheral edge with the inner edge of the peripheral edge in the opposite direction.

[0007]

According to the present invention, the outer edge of the outer periphery of the two metal plates of the gasket base material and the inner edge of the periphery of the bore are defined.
The two metal plates are aligned in the plate surface direction by the flanges formed by bending both outer and inner edges in the opposite direction.
The bent flanges are prevented from moving in opposite directions, so that the high-temperature exhaust gas is prevented from entering between the metal plates because they are inconsistent with each other in the facing direction. In addition, the edge of the metal plate is made to be safe to handle due to the curved surface of the bent flange.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 8 denotes a gasket according to the present invention, which is interposed between a cylinder head and an exhaust manifold. Accordingly, 9 is a bore corresponding to the exhaust manifold, 10 is a bolt hole through which a tightening bolt is inserted, and 11 is a spot weld between two metal plates 1a and 1b described later.

The gasket 8 can be understood from the cross sections of the respective parts in FIGS. 2, 3 and 4, with the spacer material 2 having a bead 3 interposed between two metal plates 1a and 1b constituting a gasket base material. It is a mounted structure. Reference numeral 4 denotes a plate interposed between the two spacer members 2.

In view of the above, the present invention is directed to the present invention in that the two metal plates of the gasket base material have outer peripheral edges 1a and 1b and the bores.
9 are provided with flanges 12 and 13 which are formed by bending the outer and inner side edges of the peripheral edge of the peripheral edge with the inner edge of the peripheral edge in the opposite direction.

Since the present invention has a structure as described above, the gasket 8 is composed of two metal plates 1a and 1b of a gasket base material.
The rigidity is provided by the bent flanges 12 and 13 formed at the edges of the metal plate 1a, and the strength is increased .
When the relative movement of the plate 1b in the direction of the plate surface is restricted and interposed between the cylinder head and the flange of the exhaust manifold, breakage due to the behavior of the flange surface of the exhaust manifold is eliminated.

Since the bending flanges 12 and 13 are inconsistent with each other in the facing direction, when the cylinder head and the exhaust manifold are tightened with bolts, the bending flanges 12 and 13 do not come into contact with each other and the gasket 8 does not interfere. While absorbing the compression of
It has a shielding function for preventing high-temperature exhaust gas from entering between the metal plates 1a and 1b.

Further, the edges of the metal plates 1a and 1b are rounded by the bent flanges 12 and 13, so that the handling safety is ensured.

Although the embodiment of the present invention has been described as being interposed between the cylinder head and the exhaust manifold, the present invention can be applied to other sealing portions such as a cylinder block .

[0015]

As described above, according to the present invention, the outer peripheral edge of the outer periphery of the two metal plates of the gasket base material and the peripheral edge of the bore are defined.
Since it is a configuration with a flange formed by bending the outer and inner side edges with the inner edge in opposite directions, the rigidity and strength of the gasket main body are increased,
Not only absorbs the compression of
Restricts anti-movement and prevents gasket damage. Further, the durability of the gasket is improved in order to prevent high-temperature exhaust gas from entering between the two metal plates of the gasket base material and prevent thermal deterioration of the spacer material having beads. Furthermore, gasket handling can be performed safely.

[Brief description of the drawings]

FIG. 1 is an overall front view of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

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

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a sectional view of a conventional gasket.

[Explanation of symbols]

 1a Metal plate 1b Metal plate 2 Spacer material 3 Bead 8 Gasket 12 Flange 13 Flange

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 55-124659 (JP, U) Japanese Utility Model Sho 61-167453 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16J 15/08 F02F 11/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A gasket base material comprising a spacer material having a bead formed between two metal plates and having a bore.
In there gasket, inner edge of the peripheral edge of the outer periphery of the outer edge and the bore of the two metal plates of the gasket base material
A gasket comprising a flange formed by bending both outer and inner side edges of each of the above in opposite directions.