Importance

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Abstract

A seat lifting apparatus comprises a seat lifting device disposed between a base frame and a seat frame attached onto a seat side, and independently moving up or down the front and rear sides of the seat frame; front and rear shafts disposed in the seat lifting device and respectively disposed on the front and rear sides of the seat to support the seat; front and rear engaging devices respectively disposed in the front and rear shafts; and a resilient device connected between the front and rear engaging device and balancing the lifting operation of the seat on the front and rear sides thereof. A seat lifting apparatus also comprises a seat lifting device disposed between a lower frame and an upper frame disposed above the lower frame and attached onto a seat side, and moving the upper frame up or down; a gear rotatably supported by the lower frame; a plate rotatable in association with the rotation of the gear and detachably attached to the gear; and a shaft disposed in the seat lifting device and fixed to the plate, the shaft being rotated by the rotation of the plate to move the upper frame up or down.

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First Claim