Omron Corporation

Hidekazu Yoshioka

Hitoshi Yoshida

Takaaki Suzumura

Takahiro Sakai

Jiro Koyama

Toshio Yamashita

Yoshihiro Shimizu

Yoshinobu Yamazaki

Takanobu Nagata

A connecting terminal for a connector has a fixed portion configured to be connected to an electrode portion provided in a member for mounting the connector, and a contact configured to electrically come in contact with a contact portion of a connected portion to be connected to the connector. At least one concave portion is provided along a whole outer peripheral surface of the connector terminal.

Connecting terminal with a fixed portion and a contact

A contact includes a plate with a width that ranges from 0.1 mm or more to 1 mm or less, and a stress concentrated place, where a surface roughness (Ra) on the stress concentrated place is 0.2 &#x3bc;m or less. When samples whose surface roughness Ra is 0.040 &#x3bc;m, 0.080 &#x3bc;m, 0.120 &#x3bc;m, and 0.180 &#x3bc;m were used to study a number of repetitive fracture times, as the surface roughness Ra was smaller, the number of repetitive fracture times became larger. Particularly, it is found that the surface roughness Ra may be 0.200 &#x3bc;m or less in order to satisfy 3000 times as a number of operating times of the battery connector. Further, the surface roughness Ra may be 0.080 &#x3bc;m or less in order to satisfy 6000 times as the number of operating times when a safety factor is 2.

Contact and method for manufacturing the contact

A method for manufacturing a metal component includes the steps of forming a resist film on a surface of an electrode plate, making the resist film exposed to light by use of a photomask having a mask pattern, in at least part of a rim of which a fine concavity and convexity are drawn, developing the resist film, to form an opening for molding in the resist film, and epositing an electroforming material by electroforming inside the opening for molding, to mold the material.

Contact section having an irregular shape formed thereon by electroforming

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Yawata, Japan

Hidekazu Yoshioka