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Gasket

a gasket and gasket technology, applied in the field of gaskets, can solve the problems of poor assembling workability, poor handling property, and uneven application of electrodes, and achieve the effects of stable quality, good handling property, and uniform application

Inactive Publication Date: 2007-06-28
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0105] That is, since the sheet-shaped gasket mounting member such as the resin film or the like serves as the reinforcing member, a handling property is good, and a workability at a time of later bonding is improved, and since the adhesive agent (the adhesive compound) is attached to the sheet-shaped gasket mounting member such as the resin film or the like, it is possible to omit a step of applying the adhesive agent (the adhesive compound) to the gasket elementary substance, whereby it is possible to stabilize a quality, and a capital investment for evenly applying the adhesive agent (the adhesive compound) is not required. Further, since the gasket is integrally formed and later bonded via the sheet-shaped gasket mounting member such as the resin film, it is possible to easily achieve the integration between a laminated damping steel sheet and the gasket which have been conventionally hard to be integrally formed due to melting out of an inner thermoplastic resin on the basis of the heat and the pressure. Further, since the gasket is integrally formed with the sheet-shaped gasket mounting member such as the resin film, it is not necessary to apply to work for integrating such as a through hole to the top cover base material, so that it is possible to lower cost of the top cover base material.

Problems solved by technology

However, since a face of a board to be sealed is wide, a handling property is not so good in the case of the gasket of the elementary substance type.
Further, in the case that the cells are laminated so as to assembly a fuel battery stack, a handling property, and consequently assembling workability is not so good.
In these cases, the assembling workability mentioned above can be improved, however, there is a possibility that the separator, the reaction electrode portion or the like is injured due to a pressure, a temperature or the like at a time of integrally forming, and in the case of the post-bonding, the handling property at a time of the bonding work is not so good, and it is hard to stably apply the adhesive agent.
Further, since it is impossible to strongly press the separator by the mold, a lot of molding burrs are generated.

Method used

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Experimental program
Comparison scheme
Effect test

first embodiment

[0142]FIG. 2 shows a cross-section (a cut end face) of a main portion of a gasket 1 in accordance with a first embodiment of the present invention. This gasket 1 is used as a gasket for a fuel battery, and is structured as follows.

[0143] That is, first, the gasket is provided with a resin film 2 corresponding to a sheet-shaped gasket mounting member, and a rubber 3 corresponding to a gasket main body made of a rubber elastic material is integrally formed on one face (the upper face in the drawing) 2a of the resin film 2 via an adhesive agent (not shown). Further, an adhesive agent (called also as an adhesive compound) 4 is applied to another face. (the lower face in the drawing) 2b of the resin film 2, and the resin film 2 in which the rubber 3 is integrally formed is mounted to one face of a separator 5 corresponding to the other end mounting member by the adhesive agent 4. The rubber 3 is formed in a triangle shape or an angular shape in a cross section with a seal lip portion 3a...

fourth embodiment

[0151]FIG. 5 shows a plan view of a gasket 21 in accordance with a fourth embodiment of the present invention, and an enlarged cross section along a line A-A (a cut end face) is shown in FIG. 6. This gasket 21 is used as a gasket for a fuel battery, and is structured as follows.

[0152] That is, first, an adhesive agent 24 is attached to one face (the lower face in FIG. 6) of a resin film 23 corresponding to a sheet-shaped gasket mounting member, a mold releasing film 25 is attached to the adhesive agent 24 so as to be freely peeled, a laminated film body 22 constituted by a three-layer structure as above is provided, and a gasket main body 26 made of a rubber elastic material is integrated with the film body 22 in accordance with a bonding means such as an insert molding, a boding, a fitting or the like. The resin film 23 is formed in a predetermined plane layout in conformity with a plane shape of the fuel battery and is formed in an endless shape, and is further formed in a shape ...

sixth embodiment

[0160]FIG. 11 shows a cross section of a main portion (a cut end face) of a gasket 11 in accordance with a sixth embodiment of the present invention. This gasket 11 is used as a gasket for a fuel battery, and is structured as follows.

[0161] That is, first, one sheet of resin film 13 corresponding to the sheet-shaped gasket mounting member is provided in the upper side in the drawing of an electrolyte membrane (an ion exchange membrane) 12 in a reaction electrode portion (MEA) corresponding to the other end mounting member, and a gasket main body 14 made of a rubber elastic material is integrally formed on one face (the upper face in the drawing) 13a of the resin film 13 via an adhesive agent (not shown). Further, an adhesive agent (not shown) is applied to another face (the lower face in the drawing) 13b of the resin film 13, and the resin film 13 in which the gasket main body 14 is integrally formed is mounted to one face 12a of the electrolyte membrane 12 by this adhesive agent. ...

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Abstract

In order to provide a gasket which has a good handling property as a gasket used for a fuel battery or a gasket for an HDD, can be easily integrated with the other end mounting member even in the case that the other end mounting member such as a separator or the like is a material having low strength or a thin plate, and has good mounting workability, a gasket is having a sheet-shaped gasket mounting member provided with a sticking function on one face, and a gasket main body made of a rubber-type elastic member integrated with the sheet-shaped gasket mounting member, and the gasket is mounted to the other end mounting member on the basis of the sticking function of the sheet-shaped gasket mounting member.

Description

[0001] This is a divisional application of application Ser. No. 10 / 470,278, filed Aug. 7, 2003, which in turn is a 371 nationalization of PCT / JP02 / 01196, filed Feb. 13, 2002 and published in Japanese.TECHNICAL FIELD [0002] The present invention relates to a gasket corresponding to one of sealing apparatuses, and more particular, to a gasket suitable for being used as a gasket for a fuel battery, a gasket for a top cover in a hard disc drive (HDD) or the like. BACKGROUND OF THE INVENTION [0003] For example, as a fuel battery gasket used in a fuel battery cell, there has been conventionally known a gasket of a gasket elementary substance type, a separator integral type or a reaction electrode portion (MEA) integral type, and each is attached to a predetermined position of a cell, thereby sealing a sealed fluid such as a fuel gas, an oxidizer gas, a refrigerant or the like. [0004] However, these conventional arts have the following disadvantages. [0005] That is, first, in the case that...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01M2/08F16J15/08F16J15/06F16J15/10F16J15/12H01M8/02H01M8/10
CPCF16J15/0818F16J15/104F16J15/122F16J15/123F16J2015/085F16J2015/0856H01M8/0273H01M8/0276H01M8/0284Y02E60/50H01M8/0278F16J15/02
Inventor KUROKI, YUICHISENDA, KAZUHISAKURANO, YOSHIHIROINOUE, TOMOHIRO
Owner NOK CORP