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US 11,433,450 B2Granted
Joined body and method for manufacturing same
AssigneeKobe Steel, Ltd.
InventorsYasuhiro Maeda, Kenichi Watanabe, Takayuki Kimura, Toru Hashimura
Life of this patent
Estimating the term…
Abstract
A joined body includes: a first member having a pipe shape; and a second member including a wall portion having a plate shape, and a flange portion having a cylinder shape provided with an insertion hole through which the first member is inserted. In a state where the first member is inserted into the insertion hole of the flange portion of the second member, the first member and the second member are joined with the first member pipe-expanded. A material of the second member is larger than a material of the first member in a spring-back amount.
Claims8
A joined body comprising:
- a first member having a pipe shape;
- and
- a second member including a wall portion having a plate shape, and a flange portion having a cylinder shape and provided with an insertion hole through which the first member is inserted,
- wherein in a joined state where the first member is inserted into the insertion hole of the flange portion of the second member, the first member and the second member are joined with the first member pipe-expanded,
- wherein a material of the second member has a larger spring-back amount than a material of the first member, and
- wherein an inner circumferential surface of the flange portion includes:
- a base portion connected to the wall portion;
- an abutting portion abutting on an outer circumferential surface of the first member in the joined state;
- an intermediate portion extending in an axial direction between and joining the base portion and the abutting portion;
- and
- a tip portion connected to the abutting portion and separated from the outer circumferential surface of the first member, the tip portion being inclined away from the abutting portion in the axial direction such that the inner circumferential surface of the flange portion expands at the tip portion, the tip portion forming a non-orthogonal inclination angle with respect to the axial direction;
- wherein the base portion of the flange portion abuts on the outer circumferential surface of the first member in the joined state;
- and
- wherein the tip portion is inclined away from the abutting portion and separated from the outer circumferential surface of the first member ata corner portion where the intermediate portion is joined to the abutting portion, the inner circumferential surface of the flange portion abuts on the outer circumferential surface of the first member at the corner portion in the joined state, and the inner circumferential surface of the flange portion does not abut on the outer circumferential surface of the first member at the tip portion in the joined state.
11 more elements
Dependencies are inferred from the claim text.