Omron Corporation

Mitsubishi Engineering-plastics Corporation

Kenji Funaki

Tetsuya Mori

Kozo Maenishi

Shigeru Muramatsu

Yasusuke Takahashi

Toshiyuki Furuya

Yutaka Takenaka

Yoshitaka Kanazawa

Osamu Kimura

A thermoplastic resin composition for an electrical/electronic contact part according to the present invention includes a thermoplastic resin and a polyol, wherein the polyol is contained in a range of 0.2 to 10 parts by weight based on 100 parts by weight of the thermoplastic resin. Alternatively, a thermoplastic resin composition for an electrical/electronic contact part according to the present invention includes: a thermoplastic resin; a halogenated aromatic compound which is contained in a range of 1 to 50 parts by weight based on 100 parts by weight of the thermoplastic resin; and a double salt represented by at least one of (XO).SbOand (YO).SbO, where X represents a monovalent alkaline metal element, and Y represents a divalent alkaline earth metal element, and n represents a ratio of XO or YO to SbOexceeding 0.7, the double salt having an adsorbed water elimination rate of not more than 50 min. as calculated in terms of titration time; or a polyol; wherein the double salt is contained in a range of 0.5 to 40 parts by weight based on 100 parts by weight of the thermoplastic resin.

Thermoplastic resin composition for electrical/electronic contact part and electrical/electronic contact part using the same

The invention intends to provide a direct current load breaking contact point constitution that can make and break an electrical circuit under both direct current loads of direct current resistance load and direct current inductance load over a long period of time without causing problems such as {circle around (1)} the conduction defect due to the consumption of the contact point, {circle around (2)} the locking due to material transfer from one contact point to the other contact point, {circle around (3)} the welding between the contact points, and {circle around (4)} the abnormal arc continuation, and a direct current load breaking switching mechanism such as a relay, a switch and so on that has the contact point constitution. The direct current load breaking contact point constitution according to the invention comprises a movable contact point and a stationary contact point that face each other; wherein the movable contact point is made of AgSnOInOalloy that contains at least Ag, 8 to 15% by weight in total of metal oxides including SnOand InO, 6 to 10% by weight of SnOand 1 to 5% by weight of InO; the stationary contact point is made of AgZnO alloy that contains at least Ag and 7 to 11% by weight of ZnO; and polarity of a movable side is (+) and that of a stationary side is (&#x2212;).

Direct current load breaking contact point constitution and switching mechanism therewith

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Shiga, Japan

Kenji Funaki