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|1. (WO2017154891) USB PLUG|
|Applicants:||OTSUKA TECHNO CORPORATION
[Problem] To prevent a malfunction caused by static electricity and the like, and to protect a contact from excessive current. [Solution] Provided is a USB plug that comprises: a plastic cover part 51 that connects a lead line 60; a plug part 52 that is fixed to the cover part 51; an external connection contact 53 that is provided in the plug part 52; and a temperature switch 54 that is connected between the external connection contact 53 and the lead line 60. The temperature switch 54 is a breaker 30 that switches a contact point to an off state upon detecting a temperature higher than a set temperature. The breaker 30 is provided with: an outer case 1; a fixed contact metal plate 4 that has a fixed contact 5 and that is obtained by being fixed to the outer case 1; a movable contact metal plate 6 that has in an elastic arm 6A a movable contact 7 opposing the fixed contact 5 and that is obtained by being fixed to the outer case 1 so that the elastic arm 6A can move; a bimetal 8 that separates the movable contact 7 from the fixed contact 5 by pressing the elastic arm 6A of the movable contact metal plate 6; and a PTC heater 9 that heats the bimetal 8.