| 摘要 |
A locking device for locking a brake disk includes a slot formed in a body which includes a groove for receiving a shank and a chamber for receiving a housing. A circuit board is engaged in the housing and includes a switch. A stud is slidably engaged between the shank and the switch. The stud is disengaged from the switch when the stud is engaged in the recess of the shank, and the stud is forced toward the switch in order to depress the switch when the stud is disengaged from the shank and when the shank is engaged inward of the body so as to lock the brake disk in place.
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