JPH0442509Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a metal laminated gasket that allows easy adjustment of the flow rate of water, oil, etc. in a gasket such as a cylinder head in an internal combustion engine.

[Conventional technology]

Conventionally, in gaskets such as cylinder heads of internal combustion engines, rubber seal rings 7 are used as shown in Fig. 3 for the purpose of sealing off cooling water and lubricating oil flowing between the cylinder head and cylinder block.
A metal ring 9 is integrally attached in the middle of the gasket, and the outer circumference of the metal ring 9 is inserted into the notch of the center plate 10 of the component of the metal laminated gasket, and the upper and lower plates 1
It is clamped at 1. Therefore, the water/oil hole 8 is limited by the size of the seal ring 7, which is larger than the size of the water/oil fluid passage in the cylinder block or the like.
Therefore, in order to adjust the flow rate of water or oil, it is necessary to adjust the size of the fluid passage. This also applies to other sealing methods. For this reason, small-diameter cylinders not only require troublesome machining of cylinder heads, but also require dimensional accuracy, which goes against weight reduction efforts and increases costs.

[Problem that the invention attempts to solve]

The present invention eliminates these drawbacks and provides a metal laminated gasket that can easily adjust the flow rate of water, oil, etc. and contributes to reducing the weight of engines and the like.

[Means for solving problems]

To explain the present invention based on the drawings, as shown in Fig. 1, a metal laminated gasket A is constructed by stacking several metal plates. - At the oil hole portion, the central plate 4 of the gasket component is provided with a protrusion 1 formed with a hole diameter smaller than the other upper and lower plate members 5, and the protrusion 1 is thicker than the gasket thickness in the thickness direction. At the same time, the elastic body is made to extend from the protrusion 2 to cover the edge of the protrusion 1, and the inner diameter side is used to adjust the flow rate of water, oil, etc. This metal laminated gasket A is characterized in that the hole 3 is formed by providing a bore 12 or the like in another part.

[Effect]

Since the metal laminated gasket A of the present invention has the above-described structure, the flow rate of water or oil can be easily adjusted by adjusting the size of the hole 3 for adjusting the flow rate of water or oil. Therefore, the water/oil holes in the cylinder head, cylinder block, etc. do not require narrowing of the surface part for flow rate adjustment, and can be handled with straight holes.
This greatly reduces processing costs for cylinder heads, cylinder blocks, etc. Sealing around the water/oil hole is achieved by a protrusion 2 of an elastic material such as rubber that protrudes from the thickness of the gasket provided in the protrusion 1 in the thickness direction of the gasket.

As shown in FIG. 2, the protrusion 2 may be provided at any position on the surface of the protrusion 1 as long as it is larger than this and surrounds the water/oil hole at a position that is not exposed to the water/oil hole.

In the present invention, as shown in FIG.
This protrusion 1 is provided so as to cover the protrusion 1.
Prevents it from rusting or being attacked by chemicals, etc.
Moreover, the degree of freedom in its diameter and shape has increased dramatically.
This enables efficient flow adjustment of oil, etc. In this case, the thickness of the coating 6 such as rubber may be thin.

In addition, a convex strip 2 of an elastic body such as dirt provided on the protrusion 1
The shape of the hole need not be circular, but should be shaped to match the hole for water, oil, etc., as shown in Figure 1. In this case, the protrusion 1
The shapes of the protrusions 2 and the protrusions 2 do not necessarily have to match.

Furthermore, if the conventional seal has the shape shown in Figure 3,
When a gasket is installed between the cylinder head or cylinder block, etc. and tightened, the rubber tends to flow sideways toward the hole, deforming it, and causing leakage after long-term use due to the pressure of water or oil. However, in the sealing method of the present invention, a protrusion 2 is provided on a substrate called a protrusion 1 as shown in FIG.
Even if the metal laminated gasket A is installed and tightened between the cylinder head, cylinder block, etc., the protrusions 2
Since it is compressed as it is and does not flow sideways or deform, it retains its sealing performance over a long period of time.

Depending on the location and conditions of use, the protrusions 2 do not necessarily need to be provided on both sides of the protrusion 1, and may be provided on either one side, and may be selected as appropriate for use.

[Effect of idea]

As described above, the present invention has a simple structure that allows you to freely control the desired flow rate, contributes to reducing processing costs for cylinder heads and cylinder blocks, and improves sealing performance to prevent water, oil, etc. It has excellent effects such as being able to easily respond to design changes.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the metal laminated gasket of the present invention. FIG. 2 is a sectional view showing the present invention.
FIG. 3 is a sectional view of a conventional gasket. A...Metal laminated gasket, 1...Protrusion,
2... Convex strip, 3... Hole, 4... Center material, 5... Upper and lower plate materials.

Claims (1)

[Scope of utility model registration request] In a metal laminated gasket constructed by stacking several metal plates; when water and oil holes are provided in the metal laminated gasket, in the water and oil hole portions,
The central plate of the gasket component forms a protruding portion having a smaller diameter than the other plate materials, and a convex strip made of an elastic body is formed in the thickness direction of the protruding portion to have a thickness greater than the thickness of the gasket. A metal laminated gasket characterized in that the elastic body extends from the protrusion to cover the protrusion, and a hole is provided on the inner diameter side of the protrusion to adjust the flow rate of water, oil, etc.