Buckle for seat belts

Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...

Patent

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Details

24633, 24636, A44B 1126

Patent

active

047035420

ABSTRACT:
A buckle for seat belts which comprises a buckle body and a tongue plate engageable with the buckle body when inserted thereinto through an opening formed in the front end of the buckle body, the buckle body being provided with: (a) a frame comprising a bottom plate above which a path for insertion and ejection of the tongue plate is defined and a pair of side plates, (b) an ejector being mounted slidably on the bottom plate and urged always toward the opening, (c) a hook plate being supported on the side plates of the frame and having a lock pawl, (d) a pair of control slits being formed in the side plates of the frame, each control slit forming a narrow portion in the front part and an upwardly enlarged portion in the rear part, (e) a release bar having both ends disposed in the control slits, and (f) a manual operation assembly for buckle for buckle release, characterized in that (i) the release bar is shaped in a flat rectangular form in cross section, (ii) a supporter therefor is positioned on the hook plate, receiving on the plane including a supporting point of the hook plate the force of as spring positioned in rear of the supporter, (iii) the upwardly enlarged portion of each control slit forms a slanted edge in the front part thereof and (iv) the ejector is positioned in the point slightly inside the opening. This buckle can be released by a weak force and smoothly operated manually even in the dark by feeling. The buckle is excellent in durability and stability and prevents any inoperability by intrusion of foreign matters in the buckle body through the opening. Further, the buckle can be designed in a compact size.

REFERENCES:
patent: 3969795 (1976-07-01), Stephenson
patent: 4068354 (1978-01-01), Loomba et al.
patent: 4069557 (1978-01-01), Loomba
patent: 4182008 (1980-01-01), Pouget
patent: 4310952 (1982-01-01), Robben et al.
patent: 4339854 (1982-07-01), Ikesue
patent: 4384391 (1983-05-01), Lindblad et al.
patent: 4404715 (1983-09-01), Sugimoto
patent: 4450604 (1984-05-01), Oowada
patent: 4451958 (1984-06-01), Robben et al.
patent: 4454634 (1984-06-01), Haglund et al.

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