To propose a handle device for door for operating a push-pull type handle even with a small control force by applying a boosting mechanism.
In the handle device for door, a push-pull type handle is constituted of a short lever-shaped link whose upper end is pivotally supported via a fixed pivot by an upper pedestal fixed to a wall surface of a free edge part of a door as a fixture, and a long lever-shaped link whose joint part which can move closer to and away from the wall surface is connected to a lower edge part of the short lever-shaped link and whose slide part at the opposite side to the joint part is connected to a lower pedestal fixed to the wall surface with a predetermined interval with respect to the upper pedestal. A first operation piece whose top end is engaged with a first driving body in a first box installed in the free edge part of the door is directly or indirectly connected to the lower part of the long lever-shaped link, that is, the upper site of the slider part.
KINOSHITA TAKUO
HANAWA KOICHIRO
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