Matsushita Electric Works, Ltd.

Other

Hidetoshi Takeyama

Hirohisa Tanaka

Kenji Okura

Norimasa Kaji

Hisanobu Tanaka

Masato Shinotani

Koji Sagawa

Hiromi Nishimura

Mitsuru Iida

Narutoshi Hoshino

Atsushi Nakahata

Toshihiro Yamamoto

Takao Morimoto

Tokio Tanishi

Mitsuhiro Kadowaki

Hiroaki Aihoshi

Hisao Yabu

Tomohiro Taguchi

Tokatoshi Hayashi

Hiroyuki Takami

Hideki Fukozono

Masahiro Kodo

Yasuo Yuasa

Yukihiro Uezasa

Tetsuya Yamada

Siro Sakamoto

Shuji Katou

Takuji Yamashita

Provided is a pressure coupling connector which can decrease the number of components for coping with various electric wire diameters, prevent problems due to difference in product kind, and reduce the stock. The pressure coupling connector includes a wire holding block for holding electric wires and a contact block for holding a connection terminal to which the electric wire is coupled with pressure by inserting the wire holding block into the contact block. The connection terminal of the contact block includes a U-shaped blade rising toward an opening surface into which the wire holding block is inserted. The wire holding block includes a wire holding portion in which a holding hole for transmitting the electric wire from the rear side thereof and holding the electric wire is formed and a reception groove for receiving the U-shaped blade of the connection terminal. The U-shaped blade of the connection terminal includes a core pressing blade having a step-shaped slit with two different widths in the vertical direction and a wire holding blade having a step-shaped slit with two different widths in the vertical direction, sequentially from the inside in an electric wire insertion direction. Adapting to the outer shape of an electric wire, the electric wire can be held with a wire holding slit (upper step portion)or a wire holding slit (lower step portion)

Pressure coupling connector

A low-profile connector for connecting two circuit boards of a-mobile equipment is constituted by a header and a socket. The header comprises a resin molded header body and a plurality of pairs of posts (conductive terminals) provided on the header body. The socket comprises a resin molded socket body and a plurality of sets of contacts provided on the socket body corresponding to the posts of the header. The header body and the socket body respectively have reinforcing member made of metal thin plate for reinforcing the header and the socket with respect to contortion or crack. Top end of the post is rolled to be reverse U-shape for contacting with the contact at two portions, in which a first contact portion is formed a part of a fitting portion of the contact at which the contact is held on the socket body and a second contact portion is a top end of a plate spring portion of the contact incurved for facing the first contact portion.

Low-profile connector

In a connector used for connecting a memory card to an apparatus which processes the data stored in the memory card, a cover shell and a base shell which configure a box-shaped housing are respectively formed by a metal thin plate for increasing the mechanical strength of the housing and for grounding the housing with ease so that the connector can be tough with respect to static electricity and external noise. Contacts, which are to be contacted with I/O contacts of a memory card, are integrally held on a contact base by insert molding so that contacting portions and soldering terminals of the contacts can be aligned parallel to and on the same level. A slider is configured to move forward and backward in the housing to correspond to the insertion and withdrawal of the memory card. The slider is pressed by pressing forces of a pair of coil springs so that the movement of the slider is smooth.

Connector for memory card

A low-profile connector for connecting two circuit boards of mobile equipment is constituted by a header and a socket. The header comprises a resin molded header body and a plurality of pairs of posts (conductive terminals) provided on the header body. The socket comprises a resin molded socket body and a plurality of sets of contacts provided on the socket body corresponding to the posts of the header. The header body and the socket body respectively have reinforcing member made of metal thin plate for reinforcing the header and the socket with respect to contortion or crack. Top end of the post is rolled to be reverse U-shape for contacting with the contact at two portions, in which a first contact portion is formed a part of a fitting portion of the contact at which the contact is held on the socket body and a second contact portion is a top end of a plate spring portion of the contact incurved for facing the first contact portion.

A connector has a connector plug and a connector receptacle for connecting a cable and a substrate. The connector plug has a shell made of a conductive material with both sides open, and an insulator made of a resin molding. The insulator has a first fitting part on a first side for mating with the connector receptacle, a second fitting part on the other side for mating with the cable, and a plurality of contacts disposed on the second fitting part side. The shell has flexible parts for flexibly contacting a connector receptacle shell mated with the first fitting part. The insulator is fit into the shell from an opening on one side of the shell.

Connector

A high frequency relay capable of effectively shielding a signal path, yet reducing a number of the parts forming the shield and the associated structure. The relay has a dielectric base mounting three fixed contacts arranged in a line and defined at upper ends of three contact terminals extending through the base. Two movable contact springs are utilized, each bridging the two adjacent fixed contacts for closing and opening a high frequency signal path between the two adjacent fixed contacts. Upstanding from the base is a pair of electromagnetic shield plates which define a shielded space therebetween for accommodating the three fixed contacts and the two movable contact springs. Each of the shield plates is configured to come into electrical contact with corresponding one of the movable contact springs moved in the contact opening position. Each shield plate is integrally formed with at least one ground terminal which extends continuously from a bottom of the shield plate through the base, and each shield plate is configured to cover the first and second movable contact springs over the full length thereof for completely shielding the high frequency signal path.

High frequency relay

The acceleration applied to a selected device such as a magnetic disc drive system can be detected by the use of an acceleration detector having at least one piezoelectric acceleration sensor unit. The sensor unit includes a piezoelectric element, a supporting member for the piezoelectric element and two electrical leads. The piezoelectric element is formed with a pair of elongate sheets made of a piezoelectric ceramic and an intermediate insulation layer interposed between the elongate sheets to generate a voltage difference instantaneously therebetween in response to the acceleration of the acceleration detector. The support member is made of an electrically insulating resin, and has a concave which is formed with side and bottom walls and a top opening. The side wall is provided with a slit in which the piezoelectric element is tightly caught in such a manner as to divide the concave into two open-chambers and be supported by the support member in a cantilever fashion. The electrical leads extend into the concave to make electrical connections between the elongate sheets and the electrical leads. In the present invention, since the piezoelectric element can be attached accurately at a predetermined direction to the supporting member by forcing it into the slit, it is possible to stably supply the acceleration detector having excellent sensitivity to the acceleration without causing variations in detecting direction of the acceleration.

Acceleration detector

Method for manufacturing an electric switching block of an electromagnetic relay wherein a rocking armature end or ends of an electromagnetic block drives respective movable contactor spring plates between opposing fixed contact terminals in respective switching sections of the switching block.

Method for manufacturing electric switching block of electromagnetic

This method of manufacturing gas-charging electric switches comprises a step of housing an electric switch in a container provided with two gas substituting ports and closing an opening of the container for the housing to render the container hermetical except at the gas substituting ports, a step of pouring a gas through one of the gas substituting ports of the container and discharging a gas in the container through the other gas substituting port to perform the gas substitution in the container and a step of tightly sealing the gas substituting ports with punches when the concentration of the charged gas in the container reaches a required level, and these steps are incorporated in other steps as sequential steps in the general atmosphere.

Method of manufacturing gas-charged electric switches

Growing community of inventors

Hisai, Japan

Hidetoshi Takeyama