Opening/closing assisting device for loading deck side plate

Details Opening/closing assisting device for loading deck side plate Opening/closing assisting device for loading deck side plate

1992-06-18

1993-12-21

Pedder, Dennis H.

Land vehicles: bodies and tops

Bodies

Top and side board securing devices

296 571, 2961461, 49386, 16 80, 16289, 105378, 74105, B62D 3303

Patent

active

052716520

ABSTRACT:
A device in which an auxiliary force is applied to a loading deck side plate of a truck to reduce the force required for opening and closing the side plate. A spring is provided on the underside of the loading deck to pull a rod substantially horizontally. A swing link is provided below a side end portion of the loading deck, and the tip of the swing link and an outer surface of the side plate are connected together through a connecting link in such a manner that the tip of the swing link points obliquely upward or downward when the side plate is closed or fully open, respectively. The tip of the rod and an intermediate portion of the swing link are connected together through an intermediate link. The underside of the intermediate link is brought into contact with a roller, or a link roller is provided on the underside of the intermediate link and is contacted with a rail member; thereby changing the direction and magnitude of the spring force exerted on the swing link, to obtain a desired auxiliary force varying characteristic. Since such a large-sized bell crank contained in the prior art is not used, the vertical size of the portion located inside the swing link can be reduced.

REFERENCES:
patent: 1331556 (1920-02-01), Blood
patent: 1357655 (1920-11-01), Sandell
patent: 3842542 (1974-10-01), White et al.
patent: 4165121 (1979-08-01), Hori et al.
patent: 4580315 (1986-04-01), Beckwith
patent: 4742598 (1988-05-01), Bruneau

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