KR100267480B1 - Gasket of mrtal loading type - Google Patents

Abstract

It relates to a gasket in which the sealing performance is not impaired by the rotation of the metal ring. In the said gasket, the gasket base material A which consists of the 1st plate 1 and the 2nd plate 2 which overlap each other is comprised. The first plate 1 is folded back to the second plate 2 so as not to overlap the second plate 2 so as to form a folded portion 4 constituting the cylinder hole 3. Between the folding piece 5 which comprises a folding part, and the said 1st plate 1, at least one part of the outer peripheral edge is protruded and the metal ring 6 made into the wide part is retrofitted. The wide part 6a of the metal ring 6 is coupled to the concave edge 9 formed at the inner circumferential edge surrounding the cylinder hole 3 of the second plate 2.

Description

Metal Stacked Gaskets

This invention relates to the metal laminated gasket which overlaps a 1st plate and a 2nd plate, and comprises a gasket base material.

In the metal laminated gasket in which the first and second plates are overlapped to form a gasket base material, a metal hole is formed and a metal ring is provided in the folded portion for preventing gas leakage from the cylinder hole. The metal ring is used to prevent gas leakage by causing the seal surface pressure to be concentrated compared to the portions other than the folded portion.

In the conventional art, when the folded portion provided with the metal ring is compared with the portions other than the folded portion, the sealing surface pressure is generated intensively in the folded portion, so that gas leakage can be prevented. Due to the position of the bolt hole in the gasket or the relationship between the part between the cylinder hole and the other part, the entire area of the bent portion does not need to have a mutually uniform seal surface pressure. It can also be a clue.

SUMMARY OF THE INVENTION The present invention focuses on such a drawback of a metal laminated gasket in which a first plate and a second plate are overlapped with each other to form a gasket base material, and an object thereof is to provide a product which is practical compared with the conventional example.

1 is a partial cutaway front view of the present invention.

2 is a cross-sectional view taken along the line a-a of FIG.

3 is a cross-sectional view taken along the line b-b of FIG.

* Explanation of symbols for main parts of the drawings

1: first plate 2: second plate

3: cylinder hole 4: folded part

5: folded back 6: metal ring

A gasket base material is composed of the first plate and the second plate overlapping each other, and the first plate is folded back to the second plate so as not to overlap the second plate to form a folding part forming a cylinder hole. And a metal ring having at least a part of an outer circumferential edge as a wide part between the folded piece constituting the folded part and the first plate, wherein the wide part of the metal ring is made of the first part. It is set as the structure couple | bonded with the recessed edge formed in the inner peripheral edge surrounding the cylinder hole of 2 plates.

Since the fastening load by the fastening bolt is reduced in the wide part of the metal ring, the part of the folded portion in which the wide part is located is reduced in the seal surface pressure as the whole part and the other side of the bent part is reduced. Can be distributed to provide a gasket with a generally well-balanced seal surface pressure distribution, and the metal ring is rotated (moved) along the circumferential edge of the cylinder bore because the wider portion of the metal ring is coupled to the concave edge. Since it does not, it is possible to provide a product which reliably prevents gas leakage due to the rotation of the metal ring.

EXAMPLE

The figure shows one embodiment of a metal laminated gasket according to the invention, FIG. 1 is a partial cutaway front view of the invention, FIG. 2 is a cross sectional view taken along the line a-a of FIG. 1, and FIG. 3 is a sectional view taken along the line b-b of FIG.

Reference numeral 1 is a first plate constituting the gasket base material (A), 2 shows a second plate constituting the gasket base material (A) overlapping the first plate (1), respectively, the first plate (1) ) Is folded to the second plate 2 side so as not to overlap the second plate 2 to form a folded portion 4 constituting the cylinder hole 3, and the folded portion 4 The metal ring 6 surrounding the cylinder hole 3 is interposed between the folding piece 5 and the said 1st plate 1 which comprise ().

The metal ring 6 consists of a wide part 6a and a narrow part 6b, and the wide part 6a is formed in the gasket base material A (first plate 1 and second plate 2). The part 8 which is arrange | positioned closer to the bolt hole 7 than the said narrow part 6b, and protruded from the said bending part 4 of the said wide part 6a of the said 2nd plate 2 It engages with the concave edge 9 provided in the inner peripheral edge surrounding the cylinder hole 3.

The metal cylinder 6 does not need to be limited to the shape (planar illustration) of the embodiment, and of course, for example, the entire area of the circumferential edge of the metal ring may be folded back to protrude from the bent portion 4.

Reference numeral 11 denotes a bead provided in the second plate 2 and surrounding the cylinder hole 3, and the bead 11 exhibits a secondary sealing function.

Claims (1)

The first plate and the second plate overlap each other to form a gasket base material, and the first plate is folded back to the second plate so as not to be overlapped with the second plate to form a folded portion forming a cylinder hole. And a metal ring having at least a part of an outer circumferential edge as a wide part between the folded piece and the first plate constituting the folded part, wherein the wide part of the metal ring is a cylinder of the second plate. Metal laminated gasket bonded to concave edges formed on the inner circumferential edge surrounding the hole.