Granted Patent B2

US 12,338,852 · App. 17/271,765 · Granted Jun 24, 2025

Inventors: Masaru Takimoto (Kanagawa, JP); Toshihiko Hanamachi (Kanagawa, JP); Junichi Nakayama (Kanagawa, JP)

Assignee: NHK Spring Co., Ltd.

F16B5/06B23K20/122F28F3/12B23K2101/14F28F2275/062

Abstract

Claims (12)

1. A joined body comprising:

a main body section including a wall section, the wall section forming a passage along which a medium for accelerating heat exchange flows; and

a cover configured to cover a surface of the main body section on which the passage is formed, the cover including:

a covering section provided on a side facing the main body section and configured to cover the surface of the main body section on which the passage is formed;

a groove section provided on the side facing the main body section and configured to accommodate an end portion of the wall section; and

a stirred joint section provided on a side opposite to a side on which the covering section and the groove section are provided, the stirred joint section being at least partly frictionally stirred by a depth reaching a bottom of the groove section from a surface on a side opposite to the side facing the main body section, and the stirred joint section being bonded to the end portion of the wall section,

wherein only a portion of the cover is stirred as long as the main body section and the cover can be bonded together, and

wherein a relation 1<T 1 /T 2 <3 is satisfied,

where T 1 denotes a thickness of the cover and T 2 denotes a depth of the groove section, and

the stirred joint section is formed by being stirred by a depth of T 1 −T 2 from a surface opposite to the side on which the groove sections are formed to prevent deformation of the passage.

2. The joined body according to claim 1 , wherein

the stirred joint section is formed over an entire surface of the cover on a side opposite to a main body section side.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (77)