| 摘要 |
PROBLEM TO BE SOLVED: To facilitate bolt joining work for a reverse sensor by preventing its falling-out by regulating an inserting position of a bolt joining pin of the reverse sensor. SOLUTION: A gear fixing nut 11 is relaxed up to a position where a large diameter hole 12 and a small diameter hole 13 are arranged in line with a bolt joining pin inserting hole 14 as shown by a drawing, and a bolt joining pin 15 shown by a two-dot chain line is inserted into the hole 14 from the large diameter hole 12 as shown by an arrowα. At this time, the pin 15 is restricted on an inserting position by an inner peripheral surface of the nut 11 since it is larger in a diameter than the small diameter hole 13 offered to insert a tool to expel this, and automatically stops in a normal inserting position, and falling-out of the pin 15 is prevented. Afterwards, the nut 11 is fastened, and a counter gear C/G is fixed through a slipping-off preventive washer so that slipping-off can be prevented. Since the large diameter hole 12 and the small diameter hole 13 are not arranged in line with the pin inserting hole 14 in a fastening position of the nut 11, the pin 15 is reliably prevented from slipping off by the inner peripheral surface of the nut 11.
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