Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...
Patent
1989-05-04
1993-12-21
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Separable-fastener or required component thereof
Including member having distinct formations and mating...
24643, A44B 1125
Patent
active
052711293
ABSTRACT:
A seat belt buckle 10, adapted to releasably engage with a latch plate 24 insertable within a latch passage 22 in the seat belt buckle 10, comprises: a rigid frame 12 having an open forward end 11 defining the latch passage 22, an opposite rearward end 13 adapted to be attached to a seat belt, an apertured rectangular base plate 14, an upstanding side wall 16 extending from each longitudinal edge of the base plate 14, and a fixed bar 18 extending across the width of the base plate 14 between the forward and rearward ends thereof, parallel to, and spaced apart from, the base plate 14, the fixed bar 18 being secured at each end thereof to a respective side wall 16. A locking member 26 is pivotally supported by said frame side walls 16 so as to pivot about an axis substantially parallel to, and spaced apart from, the fixed bar 18 of the frame, between a latched position as shown, in which the locking member 26 retains the latch plate 24 within the latch passage 22 in the buckle 10, and an unlatched position, in which the locking member 26 is held clear of the latch passage 22. A shaped blocking member 46 is slidably mounted upon the locking member 26 for longitudinal movement relative to the locking member 26 between a first position, where the locking member 26 is in the latched position and the blocking member 46 is interposed between the fixed bar 18 and the locking member 26 to block any pivotal movement of the locking member 26 towards the unlatched position, and a second position, where the locking member 26 is in the unlatched position and the blocking member 46 engages the fixed bar 18 to retain the locking member 26 in the unlatched position. A push button 20 is slidably mounted on the frame side walls 16 above the latch passage 22, for longitudinal movement relative to the frame base plate 14 so as to move the blocking member 46 from the first position to the second position. A coil spring 54 located between the blocking member 46 and the locking member 26 biases the blocking member 46 towards the first position. The fixed bar 18 is provided with a substantially knife-edged portion 27 which faces the rearward end 13 of the buckle 10 and extends across the width of the base plate; and the shaped blocking member 46 is provided with a sloping face 50 which makes essentially a line contact with the substantially knife-edged portion 27 of the fixed bar 18 throughout the pivotal movement of the locking member 26 from the unlatched position to a position in which the coil spring 54 can snap the blocking member 46 into the first position.
REFERENCES:
patent: 4388746 (1983-06-01), Krutz et al.
patent: 4451958 (1984-06-01), Robben et al.
patent: 4527317 (1985-07-01), Straszewski et al.
patent: 4543693 (1985-10-01), Cunningham
Clarke Ron
Martin Brian M.
General Motors Corporation
Leahy Charles E.
Sakran Victor N.
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