Title:
筒状体及び筒状体の製造方法
Document Type and Number:
Japanese Patent JP7110186
Kind Code:
B2
Abstract:
A metal plate includes: a recessed portion provided at one end surface by cutting out the metal plate in a planar direction of the metal plate, the recessed portion having an engaging portion inside the recessed portion; and a protruding portion provided at a position on another end surface, the position corresponding to that of the recessed portion, the protruding portion protruding in the planar direction, the protruding portion being engaged with the engaging portion by applying a bending process such that the engaging portion is hooked by the protruding portion, wherein a length from a proximal end portion to a distal end portion of the protruding portion before the bending process is applied is equal to or less than a depth of the recessed portion at a position of the recessed portion, the position facing an end surface of the proximal end portion of the protruding portion.
Inventors:
Takashi Yahagi
Takahiro Kobayashi
Yoshiharu Ire
Shoji Sasaki
Nishino Makoto
Takahiro Kobayashi
Yoshiharu Ire
Shoji Sasaki
Nishino Makoto
Application Number:
JP2019521275A
Publication Date:
August 01, 2022
Filing Date:
May 30, 2018
Export Citation:
Assignee:
Canon Inc
International Classes:
B21C37/06; B21C37/00; B21D39/03; B21D51/16
Domestic Patent References:
| JP2001286958A | ||||
| JP2001212613A | ||||
| JP5071014U | ||||
| JP2011247299A |
Foreign References:
| US2855252 |
Attorney, Agent or Firm:
Nakagawa International Patent Office
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