US 11,837,741 B2
Electrical apparatus using battery pack
Takuhiro Murakami, Ibaraki (JP); Tomomasa Nishikawa, Ibaraki (JP); Shinji Watanabe, Ibaraki (JP); Junpei Sato, Ibaraki (JP); Hikaru Tamura, Ibaraki (JP); Shota Kanno, Ibaraki (JP); Toshio Mizoguchi, Ibaraki (JP); Yasushi Nakano, Ibaraki (JP); Hiroyuki Hanawa, Ibaraki (JP); Kazuhiko Funabashi, Ibaraki (JP); Masayuki Ogura, Ibaraki (JP); Takuya Teranishi, Ibaraki (JP); Junichi Toukairin, Ibaraki (JP); Shota Takeuchi, Ibaraki (JP); and Yusuke Funabiki, Ibaraki (JP)
Assigned to Koki Holdings Co., Ltd., Tokyo (JP)
Appl. No. 16/626,308
Filed by Koki Holdings Co., Ltd., Tokyo (JP)
PCT Filed Jun. 29, 2018, PCT No. PCT/JP2018/024851
§ 371(c)(1), (2) Date Dec. 23, 2019,
PCT Pub. No. WO2019/017184, PCT Pub. Date Jan. 24, 2019.
Claims priority of application No. 2017-141898 (JP), filed on Jul. 21, 2017.
Prior Publication US 2020/0161609 A1, May 21, 2020
Int. Cl. H01M 50/213 (2021.01); B25F 5/02 (2006.01); H01M 50/256 (2021.01); H01M 50/296 (2021.01); B25B 21/02 (2006.01)
CPC H01M 50/213 (2021.01) [B25F 5/02 (2013.01); H01M 50/256 (2021.01); H01M 50/296 (2021.01); B25B 21/02 (2013.01); H01M 2220/30 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electrical apparatus comprising:
a battery pack having a rail part; and
an electrical apparatus main body having a housing and a battery pack mounting part mounting the battery pack, a terminal holder attached to the battery pack mounting part, and main body rail grooves integrally formed in the battery pack mounting part, wherein the terminal holder is configured to hold a plurality of apparatus-side terminals and establish electrically connected states with connection terminals of the battery pack, and the main body rail grooves correspond to the rail part of the battery pack, the plurality of apparatus-side terminals are cast to the terminal holder, the terminal holder is sandwiched by the housing,
wherein the rail part of the battery pack has two protrusion parts and two rails, the two protrusion parts and the two rails are extending in a forward-backward direction, and the two rails are engaged with the main body rail grooves and disposed in each of the protrusion parts,
wherein the battery pack includes an upper-portion face between the two rails, a lower-portion face going down from the upper-portion face in a level difference shape, a plurality of slots disposed in a level difference part that is provided between the upper-portion face and the lower-portion face,
wherein the electrical apparatus main body has an engaging part disposed in the terminal holder,
wherein the battery pack has an engagement part engaged with the engaging part of the terminal holder, and the engagement part of the battery pack is disposed in an opening portion formed between the protrusion parts at a side where the slots are located in the forward-backward direction, the engagement part is disposed between the upper-portion face and the lower-portion face,
wherein the terminal holder is an article molded from a synthetic resin and forms a vertical face and a horizontal face, and is fixed by casting the apparatus-side terminals having a flat plate shape such that the apparatus-side terminals are orthogonal to both of the vertical face and the horizontal face, wherein the apparatus-side terminals have a rectangular shape, one of longer sides comes into contact with the horizontal face, and one of shorter sides comes into contact with the vertical face, and
wherein a protrusion extending from the ten final holder in a direction intersecting the vertical face of the terminal holder is provided as the engaging part, and an upper surface of the protrusion is disposed to face a lower surface of the engagement part.