Connecting structure of metal plates
AssigneeJapan Metal Gasket Co., Ltd.
InventorKosaku Ueta
Life of this patent
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Abstract
Provided is a connecting structure in which it is difficult for a crack to occur, even if a connection location is set in a portion on which concentrated tensile stress may occur. Laminated metal plates are concurrently punched out downward in shape of tongue piece. A depth of punch-out is not smaller than a total thickness of the laminated metal plates. A tongue piece portion is punched out in shape of cantilever beam while a central connection portion is left behind. The tongue piece portion is bent downward in the out-of-plane direction at a connection portion linking to the central connection portion in order that a location of the tongue piece portion in the extension direction on its way is parallel to a bend line. The tongue piece portion is configured to widen in width gradually toward a front end thereof.
Claims10
A connecting structure comprising:
- two or more metal plates laminated together;
- a connection portion of the two or more laminated plates;
- a first bend line;
- a tongue piece portion formed by cutting concurrently the laminated metal plates in a thickness direction in a tongue-like shape from the connection portion, wherein the tongue piece portion comprises a body portion bent at an angle in an out-of-plane direction from the connection portion at the first bend line, and wherein a length of the first bend line is smaller in length than a maximal width of the tongue piece portion measured parallel to the first bend line;
- and
- a bend depth of the tongue piece portion in the out-of-plane direction that is equal to or greater than a total thickness of the laminated metal plates,
- wherein the body portion of the tongue piece portion comprises a second bend line, an inclined portion between the first and second bend lines, and a front end of the tongue piece portion extending from the second bend line and bent parallel to a tongue piece opening formed in the laminated metal plates by the cutting, wherein the first bend line, the inclined portion, and the second bend line provide a stepped difference, and
- wherein the tongue piece portion is bent downward of the laminated metal plates to be in a state of being pulled in on the connection portion side, and the front end of the tongue piece portion does not overlap the laminated metal plates.
A connecting structure comprising:
- two or more metal plates laminated together;
- a connection portion of the two or more laminated plates;
- a first bend line;
- a tongue piece portion formed by cutting concurrently the laminated metal plates in a thickness direction in a tongue-like shape from the connection portion;
- an edge portion of the laminated metal plates surrounding the tongue piece opening;
- and
- a bend depth of the tongue piece portion in the out-of-plane direction that is equal to or greater than a total thickness of the laminated metal plates, wherein the edge portion is bent in an out-of-plane direction opposite to the out-of-plane direction of the tongue piece portions and wherein the tongue piece portion comprises a body portion bent at an angle in an out-of-plane direction from the connection portion at the first bend line and a length of the bend line is smaller in length than a maximal width of the tongue piece portion measured parallel to the bend line.
Dependencies are inferred from the claim text.