摘要 |
Two resilient contact pieces (20A, 20B) have base ends (21A, 21B) coupled to each other and folded one over the other, such that the base ends (21A, 21B) are substantially in close contact. A pressing portion (24) presses the two base ends (21A, 21B) from the outside and prevents the base ends (21A, 21B) from opening. Thus, the two resilient contact pieces (20A, 20B) are held one over the other in proper postures.
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