| 摘要 |
A self locking panel fastener which has positive locking a stud holdout mechanism and an indicator pin to visually indicate to an operator whether the fastener is engaged properly with a mating receptacle. The fastener comprises a receptacle connected to one of the two panels being secured together, the receptacle having an internally threaded nut portion, an externally threaded stud having a head portion extendible through the apertures of the panels, the stud being rotatable relative to receptacle nut portion to turn the threaded portion into said nut portion to secure the stud to said nut portion, the stud having a shaped end portion and a bore formed therein; a first locking member within said receptacle having a shaped aperture and sized to receive the shaped end portion of the stud to drivingly connect the first locking member and the stud; a second locking member mounted within the receptacle for generally axial movement relative to the nut portion; a spring member for forcing the second locking member into engagement with the first locking member to form a locking connection between the stud and the second locking member to allow the second locking member to positively lock the stud against said counterrotation; and a member for driving the second locking member generally axially relative to the first locking member against the force of the spring to break the locking connection and to allow counterrotation of the stud relative to the nut portion to allow unscrewing of the stud from the nut portion, the driving member having a first position within the bore when the stud is engaged with the receptacle and a second position when the stud is disengaged from the receptacle. 21
|
