Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PROJECTION BOLT WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2015/001872
Kind Code:
A1
Abstract:
This projection bolt (1), which is for welding by electric resistance welding to a thin plate member (8), is formed from a shaft part (2), a circular expanded diameter part (3), and a welding protrusion (4) comprising an initial melting area (4a) with a tapered portion (6), and a main melting area (4b). Either the ratio of the volume of the initial melting area (4A) to the volume of the plate member (8) within the same diameter as the initial melting area (4A) is selected, or, the ratio of the circular area of the initial welding area (4A) to the plate thickness of the plate member (8) is selected, and after completion of welding, a gap is arranged between near the outer periphery of the expanded diameter area (3) and the surface of the plate member (8), and thereby, the amount of melting in the plate thickness direction is optimized, and the problem of coatability near the outer periphery of the expanded diameter area is solved, which handles the problem of rusting.

Inventors:
AOYAMA Shoji (25-1, Wakamatsudai 3-cho Minami-ku, Sakai-sh, Osaka 16, 〒5900116, JP)
AOYAMA Yoshitaka (20-11, Makitsukadai 2-cho Minami-ku, Sakai-sh, Osaka 14, 〒5900114, JP)
Application Number:
JP2014/063958
Publication Date:
January 08, 2015
Filing Date:
May 27, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
AOYAMA Shoji (25-1, Wakamatsudai 3-cho Minami-ku, Sakai-sh, Osaka 16, 〒5900116, JP)
International Classes:
B23K11/14; B23K11/30; F16B35/04
Foreign References:
JP2011051013A2011-03-17
JP2007218419A2007-08-30
DE4108947A11992-09-24
JPH0432313B21992-05-28
Other References:
See also references of EP 3017903A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (Ehara Patent Office, 15-26 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
Download PDF: