| 摘要 |
PROBLEM TO BE SOLVED: To provide a splicing unit that is simply structured and that is capable of keeping the manufacturing cost low as well as increasing the workability in assembling. SOLUTION: The unit is such that side 12 of an inner frame 2 of the unit is formed integrally with a knob 11 while the knob 11 is given a bent part 15 formed by bending.
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