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Patent Searching and Data


Title:
ELECTRODE STRUCTURE AND ELECTRIC HEATING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/159541
Kind Code:
A1
Abstract:
Provided is an electrode structure of an apparatus that performs, by means of electric heating, partial tempering of a fastening section of a member to be fastened by means of a self-piercing rivet so that a crack is not formed as a result of a distal end of a leg of the self-piercing rivet entering the member to be fastened, which is hard and has low ductility. A first electrode assembly (30a) of an electrode structure comprises: a first electrode member (31a) having a first electrode base (32a) and a first electrode contact section (33a) that extends upward from one of end sections of the first electrode base; and a first insulating tip (35a) having a first insulating-tip contact section (36a) that extends upward from the other end section of the first electrode base. A second electrode assembly (30b) is attached in a vertically inverted and laterally inverted manner with respect to the first electrode assembly. A second insulating-tip contact section (36b) and a second electrode contact section (33b) extend downward. A section of a member (52) to be fastened is sandwiched between the first electrode contact section and the second insulating-tip contact section, and another section of the member to be fastened is sandwiched between the first insulating-tip contact section and the second electrode contact section. A current is supplied between the first electrode contact section and the second electrode contact section via the member to be fastened, thus performing tempering of a joining section of the member to be fastened.

Inventors:
KONDO Yoshiteru (Azahosoda Noyori-cho, Toyohashi-sh, Aichi 40, 〒4418540, JP)
Application Number:
JP2018/047517
Publication Date:
August 22, 2019
Filing Date:
December 25, 2018
Export Citation:
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Assignee:
NEWFREY LLC (1000 Stanley Drive, New Britain Connecticut, 06053, US)
NIPPON POP RIVETS AND FASTENERS LTD. (3-6 Kioicho, Chiyoda-ku Tokyo, 94, 〒1020094, JP)
International Classes:
B21J15/00; C21D1/40; H05B3/00; H05B3/03
Foreign References:
JPS649385B21989-02-17
US20170044637A12017-02-16
JP2007521964A2007-08-09
JP2017503662A2017-02-02
JP2016055291A2016-04-21
JP2016132006A2016-07-25
JPH03216282A1991-09-24
JP2013114942A2013-06-10
JP2019036425A2019-03-07
Attorney, Agent or Firm:
TANAKA Shinichiro et al. (NAKAMURA & PARTNERS, Shin-Tokyo Bldg. 3-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 55, 〒1008355, JP)
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