Patent ID: 6899608

Claim:
An improvement of a clip mechanism on a grinding cloth platform having a table board, in which a vertical handle is provided at a top side of the table board and an elastic foam layer is pasted on a bottom side of the table board, wherein a grinding cloth is attached at two sides of a bottom side of the foam layer and oppositely folded at the two sides of the top side on the table board and may be clamped by the clip mechanism provided on the table board, said improved clip mechanism includes comprises: a jack post, a movable knob, and a clamp, in which the jack post is provided with a suppressing head with a larger diameter and with a shaft linking portion of a smaller diameter and a non-circular driving portion is provided at the bottom, in which the bottom of the non-circular driving portion is formed with a tapped hole; the movable knob rotates to one side and is provided with a movable stem, in which a vertical suppressing slot with a larger diameter and a shaft hole with a smaller diameter are arranged, and at the bottom side around the shaft hole, a concave recess is formed, and the two sides of the concave recess are respectively provided with a driving cam stopping block; for the clamp, an engaging cam surface is provided at the top side, a center recess is formed at the center of the clamp, and an engaging cam stopping block is formed at the two sides of the center recess, in which a centrally located non-circular mounting hole is provided in the center recess and several clamping teeth keeping a predefined distance with each other are provided at two sides of the underside of the clamp; the table board, further includes a combination base formed with a non-circular attachment slot; the jack post is further provided with the top shaft linking portion in the shaft hole of the movable knob and with the suppressing head, linking with the movable knob, in the suppressing slot of the movable knob and through the jack post provided with the non-circular driving portion inserted into the centrally located non-circular mounting hole provided in the center recess of the clamp and covering a suppressing spring at the bottom side within the clamp and with the end of the non-circular driving portion, which is inserted into the non-circular attachment slot of the combination base on the table board and attached with a locking fastener.