JPH0687780U - Metal laminated gasket - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a metal laminated gasket in which two plates are easily joined and the positioning at the time of joining is easy. [Arrangement] The first plate 1 is provided with a positioning tongue 5 having a substantially chevron shape, and the tongue is inserted into the second plate 2,
A fixing hole 6 for locking is formed, and a central portion of the fixing hole is formed as a widened portion 6a having a wide hole width so that the tip portion of the tongue piece 5 can be easily inserted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a metal laminated gasket used as a cylinder head gasket or the like.

[0002]

[Prior art]

 As disclosed in Japanese Patent Application Laid-Open No. 57-190738, in a metal laminated gasket in which two or more plates made of metal plates are superposed and integrated, a tongue piece by cutting is formed in one outer layer plate. By forming the tongue pieces by notching at the corresponding position of the other outer layer plate as well as forming the tongue pieces, the tongue pieces are made to face each other and the respective tongue pieces are inserted into the back side of the opposite tongue pieces. Means for joining and fixing a plurality of plates as one body are already known.

In such a metal laminated gasket, since the tongue pieces to be inserted into the back sides of the other tongue pieces are provided at the corresponding positions of the plurality of plates, the plates are joined by the engagement of both tongue pieces. At the time of performing, it is necessary to hold both tongue pieces in a state of being greatly cut and to engage them with the other tongue piece, and the joining work is complicated and it is difficult to realize the automation of the engagement.

In particular, when a large number of pairs of tongue pieces having different orientations are engaged with each other, the tongue pieces of both outer layer plates are held in a state of being cut and raised at the same time, and each pair of tongue pieces is held. It is extremely difficult to automate the joining because it is necessary to insert the front ends of the joints on the back side of each other.

[0005]

[Problems to be solved by the device]

 The technical problem of the present invention is to obtain a metal laminated gasket in which two plates are easily joined and the positioning at the time of joining is easy.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a metal laminated gasket formed by laminating two metal plates, wherein one plate is provided with a substantially mountain-shaped positioning tongue and the other plate is provided. It is characterized in that a fixing hole for inserting and locking the tongue piece is formed, and a central portion of the fixing hole is a widened portion having a wide hole width.

A plurality of sets of the tongue pieces and the fixing holes can be formed, and it is desirable that the directions of the plurality of sets of the tongue pieces and the fixing holes are different in at least two directions.

[0008]

[Action]

 By inserting the tongue pieces of one plate into the fixing holes of the other plate and locking them, both plates are fixed in a laminated state. When inserting the tongue into the fixing hole, since the tongue has a substantially chevron shape, the tip of the crest is inserted into the fixing hole, and then the entire tongue is naturally inserted into the fixing hole. Moreover, the plates can be smoothly inserted, and thus both plates can be easily positioned in a predetermined positional relationship determined by the tongue piece and the fixing hole. Moreover, since the central portion of the fixing hole is a widened portion having a wide hole width, the work of inserting the tip of the tongue piece into the fixing hole is very easy.

[0009]

【Example】

 An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment in which the metal laminated gasket of the present invention is used as a cylinder head gasket. This metal laminated gasket is composed of a first metal plate 1 and a second metal plate 1. , 2 are stacked, and in addition to the combustion chamber holes 3, necessary through holes such as water holes (not shown) are provided, and a large number of bolt holes 4 are dispersed around the combustion chamber holes 3. .

A substantially chevron-shaped positioning tongue piece 5 is provided on the first plate 1 at an appropriate position, preferably a position where it is not sandwiched between the cylinder block and the cylinder head. A fixing hole 6 for inserting and locking the tongue piece 5 is formed at a position corresponding to the tongue piece 5 on the second plate 2. The fixing hole 6 has a hole length A slightly larger than the length L of the tongue piece 5 and a hole slightly larger than the thickness T of the tongue piece 5 so that the tongue piece 5 can be inserted tightly with the smallest possible clearance. A width-increasing portion 6a is formed at the center of the fixing hole 6 and has a substantially circular hole width so that the tongue piece 5 can be easily inserted from the tip of the chevron. Has been done.

Although only one set of the tongue piece 5 and the fixing hole 6 may be formed, it is preferable to form a plurality of sets. When providing a plurality of sets, the directions of the plurality of sets of tongue pieces and the fixing holes are at least 2. It is desirable to make a mistake in the direction. In the illustrated embodiment, four sets of tongue pieces 5 and fixing holes 6 are provided at the four corners of the plates 1 and 2 by inclining them by 45 degrees with respect to the sides of the plates, and the adjoining pieces are different from each other by 90 degrees. Forming towards.

In the gasket having the above structure, the tongue piece 5 of the first plate 1 is inserted into the fixing hole 6 of the second plate 2, and the tongue piece 5 is bent and locked to the second plate 2. By doing so, both plates 1 and 2 are fixed in a laminated state.

When inserting the tongue piece 5 into the fixing hole 6, since the tongue piece 5 has a substantially mountain shape, the tip of the mountain is inserted into the fixing hole 6, and thereafter, The entire tongue piece can be naturally and smoothly inserted into the fixing hole 6, whereby the plates 1 and 2 can be easily positioned in a predetermined positional relationship determined by the tongue piece 5 and the fixing hole 6. it can. Moreover, since the central portion of the fixing hole 6 is the widened portion 6a having a wide hole width and the tip of the tongue piece 5 may be inserted into the widened portion 6a, the tongue piece 5 is inserted into the fixing hole 6. It is very easy to do, and even if there is a slight stacking error between the plates 1 and 2, the insertion can be performed with certainty. As for the stacking error at that time, the entire tongue piece 5 is inserted into the fixing hole 6. It is automatically resolved by doing. Therefore, automation of the gasket assembly process can be easily realized.

[0014]

[Effect of device]

 As described above in detail, according to the present invention, one plate is formed with a substantially chevron-shaped tongue, and the other plate is provided with a fixing hole having a wide central hole width. By inserting the tip of the tongue into the widened part of the fixing hole, the entire tongue can be inserted naturally and smoothly into the fixing hole after that, so that both plates are determined by the tongue and the fixing hole. It can be easily positioned and fixed in a predetermined positional relationship. Moreover, by widening the hole width of the central portion of the fixing hole, the work of inserting the tip of the tongue piece into the fixing hole can be performed very easily.

[Brief description of drawings]

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

FIG. 2 is an enlarged view of a main part of the gasket shown in FIG.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is an exploded perspective view of a plate.

[Explanation of symbols]

 1 1st plate 2 2nd plate 5 Tongue piece 6 Fixing hole 6a Widened part

Claims (3)

[Scope of utility model registration request] 1. A metal laminated gasket formed by laminating two metal plates, wherein one plate is provided with a positioning tongue having a substantially chevron shape, and the other plate is inserted with the tongue. A metal laminated gasket characterized in that a fixing hole for stopping the fixing hole is formed, and a central portion of the fixing hole is a widened portion having a wide hole width. 2. The metal laminated gasket according to claim 1, wherein a plurality of sets of tongue pieces and fixing holes are formed. 3. The metal laminated gasket according to claim 2, wherein the plurality of sets of tongue pieces and the fixing holes are oriented in different directions in at least two directions.