US 12,011,757 B2Granted

Fixing device, fixing method, and structure

OwnerTakenobu Hongoinventor

Life of this patent

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Abstract

A fixing device places and layers a plurality of members between a die and a punch disposed in an opposed manner, and presses and fixes the plurality of members. The plurality of members include a first member including a first fixation portion, a second member including a second fixation portion smaller than the first fixation portion, and a third member including a third fixation portion larger than the second fixation portion. The die includes a projected portion that protrudes toward the punch, and the punch includes a sheltering portion recessed along a shape of the second fixation portion. The die and the punch press the first fixation portion and the third fixation portion, thereby forming an extruded portion and forming a recess-projection fitting structure EG in a thickness direction, so that the second fixation portion is sandwiched and fixed therebetween.

Claims3

Dependent claims

A structure obtained by layering and integrally fixing a plurality of members, wherein

the structure includes at least a first member including a first fixation portion, a second member including a second fixation portion smaller than the first fixation portion, and a third member including a third fixation portion larger than the second fixation portion,
the structure includes an extruded portion formed by overlapping, and extruding in an overlapped direction, the first fixation portion, the second fixation portion, and the third fixation portion to form a first region, and
a recess-projection fitting structure between the first fixation portion and the third fixation portion is provided in the extruded portion to form a second region, so that the second fixation portion is sandwiched and fixed between the first fixation portion and the third fixation portion, wherein a lower surface of the first member in the first region and a lower surface of the first member in the second region are flat and continuous with one another.

Dependencies are inferred from the claim text.

Facts

Application: 18/303,279Filed 19 Apr 2023 · division
Priority: JP 2018-00943124 Jan 2018
Published: US 2023/0249241 A110 Aug 2023
Granted: 18 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

B21D 39/031
Of sheet metal otherwise than by folding: joining superposed plates by locally deforming without slitting or piercing
B21D 39/03
Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating ; Tube expanders: of sheet…
B32B 3/263
Characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or…
B32B 15/01
Layered products comprising a layer of metal: all layers being exclusively metallic

Family

PCT/JP2019/000298Parent of this division · filed 9 Jan 2019
US 2023/0249241 A1Pre-grant publication · published 10 Aug 2023
Application16/963,711Parent of this division
US 11,673,179 B2Parent of this division
US 2021/0078066 A1Published application
US 12,011,757 B2This patent

From the US filing history. Foreign family members aren’t listed.