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Image Number 6 for United States Patent #8113735.
A joining component is joined to a joint component. The joining component includes an insertion hole and two fitting holes. The joint component includes a fusible shaft at a position corresponding to the insertion hole and two protrusions at positions corresponding to the fitting holes. The joining component is placed on the joint component such that the fusible shaft is inserted into the insertion hole, and the protrusions fit into the fitting holes. The fusible shaft is then fused by using ultrasonic vibrations.
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