Calking structure and jig intended for calking
AssigneeAlps Electric Co., Ltd.
InventorsTakeshi Shirasaka, Hiroyasu Takemura
Life of this patent
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Abstract
A calking structure wherein a calked member is calked firmly in a fixed member and a jig intended for obtaining the structure are disclosed. Cutting edges 2a, 2b of calking jigs 15, 16 are provided with slant faces 3a or 3b, 3c for subjecting calking pieces 21a, 21b to a torsional deformation with reference to a cut face A from depression, and the calking pieces 21a, 21b are locked to a fixed member 8 as deformed torsionally to a calked member 20.
Claims3
A calking jig for connecting a calked member to a fixed member, the calked member having an end extending through an aperture formed in the fixed member, the calking jig comprising:
- a shaft having an axis;
- a body having a fixed end connected to the shaft and a free end, the body defining first and second parallel cutting edges formed on the free end, a slot formed between the first and second cutting edges, and a plurality of cutting surfaces formed on the free end on sides of the first and second cutting edges opposite to the slot;
- wherein the cutting surfaces are formed such that when the jig is pressed against the end of the calked member in a direction along the axis, the calked member is cut by the cutting edges into a salient, a first calking piece and a second calking piece, the salient being received in the slot, the first calking piece is bent away from the calking jig and twisted relative to the axis of the calking jig, and the second piece is bent away from the calking jig in a direction opposite to the first piece and twisted relative to the axis of the calking jig.
Dependencies are inferred from the claim text.