JPH0587370U - gasket - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object to provide a gasket having improved sealability. A top part 21 of the body having lands 22 formed in an appropriate shape on the surface and a plurality of groove portions 23 formed between the lands 22 and a land 25 having an appropriate shape on the surface are formed between the lands 25. Lower part 2 of the body in which the groove portion 26 is formed
4 is a gasket 1 that is mounted between the upper body 21 and the lower body 24 and seals between the upper body 21 and the lower body 24. And each of the groove portions 23, 26
And the rubber coating metals 5 and 8 are formed between the oil passages 27 and 28 corresponding to the oil passages 27 and 28 formed between the rubber coating metals 5 and 8. A gasket having holes 10 and 13 closed by 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gasket, and more particularly to a gasket effectively used for sealing a separate valve body of a hydraulic torque converter (hereinafter referred to as a torque converter) of an automatic transmission vehicle.

[0002]

[Prior Art and Problems to be Solved]

 Generally, a valve body used for separating a torque converter of an automatic transmission vehicle has a land 22 having a proper shape on its surface and a plurality of groove portions 23, as shown in FIGS. 6 to 8. It has an upper part 21 and a body lower part 24 in which a land 25 is formed in an appropriate shape on the surface to form a plurality of groove parts 26, and a gasket is mounted between the body upper part 21 and the body lower part 24. Growling.

Then, by assembling the two bodies 21, 24 integrally with each other with the gasket mounted between the upper body portion 21 and the lower body portion 24, the groove portion 23 of the upper body portion 21 and the groove portion of the lower body portion 24 are assembled. A plurality of oil passages are formed between the gasket 26 and the gasket, and fluid pressure due to oil or the like acts in the oil passages.

Further, as the gasket, as shown in FIG. 9, a gasket 31 constituted by providing flat paper 33 on both surfaces of an intermediate plate 32 made of a flat steel plate, or the gasket 31 shown in FIG. As shown, a gasket 34 is formed by providing a flat rubber material 36 on both surfaces of a middle plate 35 made of a flat steel plate, or as shown in FIGS. 11 and 12, made of a flat steel plate. A gasket 37 or the like configured by providing a rubber coating metal 41 with a rubber material 40 coated on both sides of a steel plate 39 on both sides of the intermediate plate 38 is used.

The gaskets 31, 34, 37 configured as described above are sandwiched between the lands 22, 25 at the positions where the lands 22, 25 of the body upper part 21 and the body lower part 24 correspond. As a result, the body upper part 21 and the body lower part 24 are sealed, and at a position where the lands 22 and 25 of the body upper part 21 and the body lower part 24 do not correspond, either the body upper part 21 or the body lower part 24 is By contacting the lands 22 and 25 of the above, the upper part 21 of the body or the lower part 24 of the body is sealed.

However, in the gasket 31 in which the paper 33 is arranged on both sides of the intermediate plate 32, if it is used for a long period of time, the paper 33 is dented, torn, punctured or the like, and the sealing property is deteriorated, so that durability is deteriorated. It had a problem that it was not good.

Therefore, the gaskets 34, 37 were proposed for the purpose of improving the durability, but the initial sealability is the same as that of the gasket 31 using the paper 33, and the fluid is not provided in the oil passage. When pressure is applied, the adhesion between the lands 22 and 25 of the bodies 21 and 24 deteriorates, and there is a problem that the rubber materials 36 and 40 are softened especially in a high temperature region and the sealing performance is deteriorated.

The present invention solves the above-mentioned problems of the conventional ones, and an object thereof is to provide a gasket excellent in sealing property.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a land in an appropriate shape on the surface and forms a plurality of grooves between the lands and an upper part of the body on which a land is formed in an appropriate shape. A gasket, which is mounted between a land and a lower part of the body where a plurality of grooves are formed, seals between the upper part of the body and the lower part of the body, and is a rubber-coated metal that contacts the lands on both sides of the middle plate. And a hole that communicates with the oil passage at a predetermined portion of each rubber coating metal corresponding to an oil passage formed between each groove portion and each rubber coating metal and is closed by the middle plate. Is adopted.

[0010]

[Action]

 This invention adopts the above-mentioned means, and when fluid pressure is applied to the oil passage formed between the groove portion at the upper and lower parts of the body and the rubber coating metal of the gasket, it is possible to correspond to the oil passage of the rubber coating metal. The pressure is distributed to the middle plate side through the holes drilled in the area to be filled, and the deformation of the rubber coating metal is minimized, so that the sealing property of the gasket is improved.

[0011]

【Example】

 An embodiment of the present invention shown in the drawings will be described below. 1 to 3 show an embodiment of a gasket according to the present invention, in which a gasket 1 has a middle plate 2 made of a flat plate-shaped steel plate, and a rubber plate on both sides of the steel plate 3. 4 is provided with a rubber coating metal 5, and the other surface is provided with another rubber coating metal 8 having both surfaces of a steel plate 6 coated with a rubber material 7.

One rubber coating metal 5 shown in FIG. 2 abuts on a land 22 of a body upper portion 21 constituting the valve body 20 shown in FIGS. 6 and 7, and forms a groove 23 formed between the lands 22. An oil passage 27 is formed between them, and a hole 10 is formed in a portion of the rubber coating metal 5 corresponding to this oil passage 27. The hole 10 communicates with the oil passage 27 and is closed by the intermediate plate 2. It is like this.

On the other hand, the other rubber coating metal 8 shown in FIG. 3 abuts on the lands 25 of the lower portion 24 of the valve body 20 shown in FIGS. 6 and 8 and forms a groove portion 26 formed between the lands 25. An oil passage 28 is formed between them, and a hole 13 is formed in a portion of the rubber coating metal 8 corresponding to this oil passage 28. The hole 13 communicates with the oil passage 28 and is closed by the intermediate plate 2. It has become.

Further, these holes 10 and 13 are provided at appropriate positions of the rubber coating metals 5 and 8 corresponding to the oil passages formed between the rubber coating metals 5 and 8 and the lands 22 and 25 of the valve body 20. Is a hole having a diameter of 3 mm or less and is formed separately from the oil passage holes 9 and 12 communicating between the oil passages 27 and 28 and the bolt holes 11 and 14 to which bolts are attached.

As shown in FIGS. 6 to 8, the gasket 1 configured as described above has a body upper portion on which a land 22 is formed in an appropriate shape and a plurality of groove portions 23 are formed as shown in FIGS. 6 to 8. 21 and a lower body 24 having a plurality of grooves 26 formed by forming lands 25 in a proper shape on the surface.

Then, as shown in FIG. 4, the body upper part 21 and the body lower part 24 are assembled together by assembling the two bodies 21, 24 with the gasket 1 mounted between them. When the lands 22 and 25 of the body lower part 24 correspond to each other, the lands 22 and 25 are sandwiched between the lands 22 and 25 to seal between the body upper part 21 and the body lower part 24, and the body upper part 21 and the body lower part 24 are sealed. At a position where the lands 22 and 25 of 24 do not correspond to each other, the lands 22 and 25 of the body upper part 21 or the body lower part 24 are brought into contact with each other to seal the body upper part 21 or the body lower part 24. And a plurality of sealed oil passages 27 and 28 are formed between each body 21 and 24 and the gasket 1. Becomes

When fluid pressure such as oil is applied to the oil passages 27 and 28 in this state, the rubber coating metals 5 and 8 of the gasket 1 communicate with the oil passages 27 and 28 and are closed by the intermediate plate 2. Since the holes 10 and 13 are bored, and the fluid pressure applied to the oil passages 27 and 28 is distributed to the rigid middle plate 2 through the holes 10 and 13, the distortion of the rubber coating metals 5 and 8 is minimized. It is possible to prevent the deterioration of the sealing property.

FIG. 5 is a diagram showing the relationship between the oil temperature and the amount of leakage at the initial stage. The rubber coating metal with holes (white triangles) is a rubber coating metal without holes ( It can be seen that the amount of leakage is small compared to the white circle) and the paper gasket (black circle).

By thus providing the holes 10 and 13 in the rubber coating metals 5 and 8, the sealing property of the gasket 1 is improved, so that the performance of the control valve is improved and the efficiency of the hydraulic pump is improved. The hydraulic pump can be made smaller and lighter.

[0020]

[Effect of the device]

 In this device, as described above, the hole provided in the rubber coating metal communicates with the oil passage and is closed by the middle plate, so the fluid pressure applied to the oil passage is dispersed in the middle plate through this hole, Improves gasket sealing to minimize deformation of rubber coated metal.

Further, if the sealing property of the gasket is improved, the performance of the control valve is improved, the efficiency of the hydraulic pump is improved, and the hydraulic pump can be made smaller and lighter. is there.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a gasket according to the present invention.

FIG. 2 shows an embodiment of a gasket according to the present invention,
It is a schematic plan view which shows the rubber coating metal located in a body upper side.

FIG. 3 shows an embodiment of a gasket according to the present invention,
It is a schematic plan view which shows the rubber coating metal located in a lower part side of a body.

FIG. 4 is a schematic cross-sectional view showing a state in which a gasket according to the present invention is arranged between a body upper part and a body lower part.

FIG. 5 is a diagram showing a relationship between an oil temperature and a leakage amount when sealing is performed using a gasket.

FIG. 6 is a perspective view showing a state where a gasket is arranged between an upper part of the body and a lower part of the body.

FIG. 7 is a schematic view showing a land shape on the upper part of the body.

FIG. 8 is a schematic view showing a land shape of a lower portion of the body.

FIG. 9 is a schematic sectional view showing a first example of a conventional gasket.

FIG. 10 is a schematic sectional view showing a second example of a conventional gasket.

FIG. 11 is a schematic sectional view showing a third example of a conventional gasket.

FIG. 12 is a schematic plan view showing a rubber coating metal in a third example of a conventional gasket.

[Explanation of symbols]

 1, 31, 34, 37 ... Gasket 2, 32, 35, 38 ... Middle plate 3, 6, 39 ... Steel plate 4, 7, 36, 40 ... Rubber material 5, 8, 41 ... Rubber coating metal 9, 12 ... Oil passage hole 10, 13 ... Hole 11, 14 ... Bolt hole 20 ... Valve body 21 ... Body upper part 22, 25 ... Land 23, 26 ... Groove part 24 ... Body lower part 27, 28: Oil passage 33: Paper

Claims (1)

[Scope of utility model registration request] 1. A body upper part (21) having a land (22) formed in an appropriate shape on the surface and a plurality of groove portions (23) formed between the lands (22), and a land (22) formed in an appropriate shape on the surface. 25) is formed between the lands (25) to form a plurality of groove portions (26) between the lower body (24) and the upper body (21) and the lower body (24). A rubber coating metal (5, 8) for contacting the lands (22, 25) is provided on both surfaces of the intermediate plate (2) for sealing the gasket (1) and the groove portions (23, 26) are provided. Each rubber coating metal (5,
8) communicating with the oil passages (27, 28) at a predetermined portion of each rubber coating metal (5, 8) corresponding to the oil passages (27, 28) formed between the middle plate and the intermediate plate. A gasket having holes (10, 13) closed in (2).