| 摘要 |
In a different nuts assembling construction in which according to the kind of nuts 71, 73, there are provided plural pairs of nut fitting grooves 61, 63 into which both sides of seats 75, 77 of nuts 71, 73 are fitted, the thicknesses D1, D2 of seats 75, 77 of nuts 71, 73 are formed in a manner to be different for each kind of the nuts 71, 73; and the groove thicknesses of the nut fitting grooves 61, 63 are formed by being matched to the thicknesses D1, D2 of corresponding seats 75, 77, so that where an attempt is made to fit the 71, 73 into wrong nut fitting grooves 61, 63, the thicknesses D1, D2 of the seats 75, 77 are not matched to the groove thicknesses of the nut fitting grooves 61, 63, whereby a worker can easily detect that the kind of the nuts 71, 73 is wrong.
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