Nok Corporation

Kabushiki Kaisha Toshiba

Yuichi Kuroki

Tomohiro Inoue

Yoshihiro Kurano

Kazuo Saito

Yasuji Ogami

Kazuhisa Senda

Atsushi Oma

Akira Yamaguchi

Shotaro Koga

Shigeo Wakamatsu

Osamu Nagai

Koichi Yokose

Zituhiko Hayashi

Koichi Ohno

Jo Matsune

Masami Akahori

The invention provides a method for manufacturing a substrate-integrated gasket, the method integrating a fiber substrate which is constructed by a pulp fiber having cellulose as a main component and a gasket body which is constructed by a rubber-like elastic body according to a rubber impregnation, wherein a plurality of substrate-integrated gaskets are obtained by executing an injection molding by plural stages of rubber metal molds. Further, the rubber material is filled in plural stages of metal mold cavities by passing the rubber material through the fiber substrate in which a rubber material flow channel in the metal mold is closed at its injection pressure. The invention can reduce a man hour for removing burr and cleaning a metal mold by suppressing generation of rubber burr at the molding time and can reduce an amount of disposal of a molding material, thereby achieving a good manufacturing efficiency.

Method for manufacturing substrate-integrated gasket

In order to prevent an electrolyte membrane from being broken, and make an assembling steps of a cell easy, in a fuel cell provided with a membrane electrode complex in which catalyst layers are respectively arranged on both surfaces of a electrolyte membrane, first and second gas diffusion layers which are arranged on both surfaces of the electrode complex, separators for respectively supplying reaction gas to the first and second gas diffusion layers, and a gasket for sealing the reaction gas, the gasket is formed on a surface of the gas diffusion layer so as to oppose to the separator, at least the gasket forming portion of the gas diffusion layer has a lower void content than the portion in contact with the catalyst layer, and the gasket arranged in the first and second gas diffusion layers is integrally formed at least via a through hole passing through the first and second gas diffusion layers.

Fuel cell having a gasket integrally formed through gas diffusion layer

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.

Gasket for electrolyte membrane

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 hard disc drive, 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.

Gasket with sheet-shaped member and a gasket mainbody mounted to a mounting member

In order to provide a constituting part for a fuel battery in which a number of steps of assembling the constituting parts for the fuel battery can be reduced, and in which the replacing property and the maintenance property of fuel battery cell parts can be improved and the cost for parts can be reduced, the structure is made such that a separator made of a carbon plate or substantially similar material, a gas diffusion layer made of a carbon fiber or substantially similar material, and a gasket made of a liquid rubber cured material or substantially similar material are integrally formed, and further, gaskets are respectively provided on both surfaces of a pair of gas diffusion layers holding an independent electrolyte membrane from both sides thereof between the pair.

Constituent part for fuel cell

In order to reduce an assembling man hour of the constituting part for the fuel battery and prevent wrinkles from being generated in an electrolyte membrane, in a constituting part for a fuel battery having electrodes with catalyst in both pole sides of an electrolyte membrane and provided with gas diffusion layers for promoting diffusion of gas in both outer sides thereof, an integrated product between the gas diffusion layers and the gasket, the gas diffusion layers being made of a carbon fiber or the like and impregnated with a rubber, and forming gaskets is bonded to an integrated product of the electrolyte membrane and the electrodes with catalyst by using a hot press.

Fuel cell and method of manufacturing the fuel cell

In a gasket used for a fuel battery, in order to solve problems with respect to making a seal portion thin, improving an assembling property, preventing a position shift, making a surface pressure low, making the surface pressure uniform, and the like, a gasket lip made of a liquid rubber hardened material is integrally formed on a surface of a flat plate made of a carbon, a graphite, a conductive resin such as a conductive phenol resin or the like, an ion exchange resin, or a metal such as a stainless steel, a magnesium alloy or the like, or on a groove portion applied to the surface.

Gasket for fuel cell and method of forming it

In order to make it possible to specify a cell or a module generating an abnormality in a power generating performance (a voltage, a current and the like) without dissembling a fuel battery stack, a gasket for a fuel battery having gaskets on both surfaces of a print circuit for taking out an electric signal within the cell or the module is held between separators, and an electric signal take-out portion for taking out an electric signal (the voltage, the current and the like) is integrally assembled together with a seal.

Gasket for fuel battery

A sealing device including a fitting portion fixed on a first surface forming an annular gap with a second surface; and a seal supported by a support provided at the fitting portion and including a plurality of axial lips whose tips come into contact with the second surface. The annular gap is sealed for the purpose of isolating a sealed side and a non-sealed side, and ribs for pumping a sealing fluid to the sealed side are formed on the lips at the non-sealed side.

Sealing device

To prevent a pressure container of a battery, a condenser or the like from exploding due to an abnormal increase of a pressure within the pressure container without having a rubber breaking plate with which it is hard to control the breaking pressure, there is provided a breaking plate integrally formed with a resin seal plate main body for closing an opening portion of a pressure container, a thin portion integrally formed between the seal plate main body and the breaking plate and being thinner than the breaking plate, and an inclined surface portion formed to be gradually thicker from a thickness of the thin portion and provided in a peripheral edge portion of the breaking plate.

Growing community of inventors

Fujisawa, Japan

Yuichi Kuroki