Sink drain

Abstract

A sink drain includes an insertion cap and a base. The insertion cap includes a plug seat which extends outward and upward from a bottom of an insertion cap to form an opening facing up. At least one side of the plug seat is provided with a protruding resilient plate. The base has at least one fixing hole disposed at a central section thereof. The fixing hole is adapted for engagement of the resilient plate of the insertion cap. When the insertion cap is pressed down or pulled up, the resilient plate is subjected to the diameter of a cylindrical body of the base and compressed inward along the lower curve surface or the upper curve surface to be engaged with or disengaged from the fixing hole, such that the stopper can be pressed to control drain of water.

What is claimed is: 
     
         1 . A sink drain, comprising an insertion cap and a base, the insertion cap comprising an elastic telescopic pipe and a stopper disposed on top of the telescopic pipe, the stopper being a flat plate with a washer surrounding a peripheral edge thereof, the base comprising a cylindrical body and an annular plate connected with a top edge of the cylindrical body, characterized by:
 the insertion cap further comprising a plug seat which extends outward and upward from a bottom of the insertion cap to form an opening facing up, at least one side of the plug seat being provided with a protruding resilient plate;   the base having at least one fixing hole disposed at a central section thereof, the fixing hole being adapted for engagement of the resilient plate of the insertion cap;   thereby, the insertion cap and the base being assembled by engagement of the resilient plate and the fixing hole.   
     
     
         2 . The sink drain as claimed in  claim 1 , wherein the resilient plate is a curved plate which has an upper curve surface and a lower curve surface.