Liftable driver's seat for automobiles

DETAILED DESCRIPTION It is a primary object of the present invention to provide a driver's seat for automobiles which can be not only shifted forwards or backwards, but also raised or lowered to the desired extent.
It is another object of the present invention to provide a driver's seat for automobiles which can be shifted forwards or backwards as well as raised or lowered with a relatively simple mechanism.
It is a further object of the present invention to provide a driver's seat for automobiles which can be shifted forwards or backwards as well as raised or lowered in the state of the driver sitting thereon with relatively little physical labour.
In accordance with the present invention, a driver's seat for automobiles is provided wherein a seat frame having generally a rectangular shape in the plan view is adapted to be supported on the automobile floor through four links each disposed near the respective corners thereof such that each of the links is pivoted at its one end to the floor and pivoted at the other end to the seat frame, a main rotary shaft rotatively mounted to the seat frame near one of the links preferably disposed forward and connected to this link through two operating links such that the two operating links are pivotally connected together at their one ends, one of the links being secured at its other end to the main rotary shaft and the other of the links being pivotally connected at its other end to the link, the main rotary shaft being further rigidly connected to a manipulating lever which is adapted to be releasably locked to the seat frame, whereby the manipulating lever, when released, can rotate the main rotary shaft to cause one of the two operating links fixedly secured thereto at its one end to be swung about the pivotal point between the two operating links owing to the fact that the respective links are pivotally connected to the automobile floor and the seat frame, resulting in the shift of the seat frame forward and backwards simultaneously due to the simultaneous swing of all of the links about their pivotal connecting points to the floor