US 11,806,806 B2
Joint structure
Atsuhiro Kawamoto, Hyogo (JP); Junji Fujiwara, Osaka (JP); and Shigeki Yonemori, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 16/086,996
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 28, 2017, PCT No. PCT/JP2017/012590
§ 371(c)(1), (2) Date Sep. 20, 2018,
PCT Pub. No. WO2017/170518, PCT Pub. Date Oct. 5, 2017.
Claims priority of application No. 2016-067196 (JP), filed on Mar. 30, 2016.
Prior Publication US 2019/0047087 A1, Feb. 14, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 3/26 (2006.01); B32B 15/01 (2006.01); B32B 15/08 (2006.01); B23K 103/04 (2006.01); B23K 101/00 (2006.01); B23K 26/21 (2014.01); B29C 65/16 (2006.01); B23K 26/324 (2014.01); B23K 26/323 (2014.01)
CPC B23K 26/21 (2015.10) [B23K 26/323 (2015.10); B23K 26/324 (2013.01); B29C 65/16 (2013.01); B32B 3/266 (2013.01); B32B 15/01 (2013.01); B32B 15/08 (2013.01); B23K 2101/006 (2018.08); B23K 2103/04 (2018.08); B32B 2250/40 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A joint structure comprising:
a first material;
a second material including a similar metal material to the first material, the second material being weldable to the first material; and
a third material, at least a portion of which being sandwiched between the first material and the second material, the third material including a through opening portion in the sandwiched portion and including a material that is difficult to be welded to both the first material and the second material, the third material being a resin material,
the first material and the second material welded to each other via the through opening portion, wherein
the first material and the second material are welded by emitting a laser beam from a side on which the first material is disposed, under a condition in which: at least one of the first material and the second material is provided with a protrusion inserted in the through opening portion; a first gap is provided between the protrusion and an inner peripheral surface of the through opening portion; a second gap is provided between the first material and the second material, the second gap having a size depending on a plate thickness of the first material in a region corresponding to the protrusion along a plate thickness direction; and the size of the second gap is greater than or equal to 0.1 mm and less than or equal to 38% of the plate thickness of the first material in the region, and wherein
the inner peripheral surface is indirectly heated and fused by welding heat input to the protrusion by the laser beam and intimately fixed to an outer peripheral side of the protrusion.