Lifting and lowering structure of a long-legged chair

Abstract

A long-legged chair includes a pair of seat supporting members, which are each connected to a respective one of front legs of the chair so as to slide up and down on the front legs; each seat supporting member has a hollow protruding portion thereon, which has a hole facing and adjacent to a corresponding front leg, and which has a button received therein and pivoted thereto; each button has a pressed portion and an inserted portion passed through a corresponding said hole so as to be received in one of the recessed portions in order for the seat supporting members to be firmly held by the front legs; when the buttons are pressed at the pressed portions, the inserted portions will be out of the recessed portions of the front legs, and in turn the seat supporting members are allow to slide on the front legs to adjust height.

1 . A lifting and lowering structure of a long-legged chair, comprising
 a pair of front legs, the front legs each having a plurality of recessed portions thereof;   a pair of rear legs pivoted to respective ones the front legs,   a pair of seat supporting members, the seat supporting members being each connected to a respective one of the front legs so as to slide over the front legs; and   a seat joined to the seat supporting members,   each of the seat supporting members having a hollow protruding portion thereon; each of the hollow protruding portions having a hole adjacent to a corresponding said front leg; each of the hollow protruding portions having a button received therein and pivoted thereto; each of the buttons having a pressed portion and an inserted portion; the inserted portions of the buttons each facing a corresponding said hollow protruding portion hole so as to be passed through said hole and received in one of the recessed portions of the front legs in order for the seat supporting members to be firmly held in position on the front legs; an angle between each of the pressed portions of the buttons and a corresponding said inserted portion being blunt; the buttons being capable of being pressed at the pressed portions to move the inserted portions out of the recessed portions of the front legs in order to allow the seat supporting members to slide on the front legs.