Faucet Valve Core

Abstract

A faucet valve core includes an outer shell, a bottom cover connected with a bottom of the outer shell, a valve stem rotatable and partially mounted in the outer shell. The inner end of the valve stem is connected with a top side of the movable valve plate, a bottom side of the move valve plate is connected with a fixed valve plate. A pair of water channels is conic and is formed through the fixed valve plate and each water channel has a top opening and a bottom opening that is larger than the top opening. Given the faucet valve core, water flow rate can be increased while the size of the entire faucet valve core can be reduced.

What is claimed is: 
     
         1 . A faucet valve core structure comprising:
 an outer shell;   a bottom cover connected with a bottom of the outer shell and having a pair of drain holes formed through the bottom cover;   a valve stem rotatable mounted in the outer shell, wherein a top end of the valve stem is located inside of the outer shell and a bottom end is located outside the outer shell;   a movable valve plate has a top side of the movable valve plate securely connected with the end of the valve stem inside the outer shell; and   a fixed valve plate connected with a bottom side of the movable valve plate and having a pair of water channels formed through the fixed valve plate corresponding to the pair of drain holes of the bottom cover, wherein the pair of water channels is conic, and a cross-sectional area of a bottom opening of each water channel adjacent to the bottom cover is greater than a cross-sectional area of a top opening of the water channel adjacent to the movable valve plate.   
     
     
         2 . The faucet valve core structure as claimed in  claim 1 , wherein the movable valve plate has two recesses oppositely formed in a peripheral wall and adjacent to the valve stem; and
 the valve stem has two protrusions formed on and protruding from the bottom end of the valve stem and respectively engaging the recesses.   
     
     
         3 . The faucet valve core structure as claimed in  claim 1 , wherein the outer shell has two through holes oppositely formed through the outer shell, and the bottom cover has two bumps formed on a peripheral surface thereof and respectively engaging the two through holes on the outer shell. 
     
     
         4 . The faucet valve core structure as claimed in  claim 3 , wherein each bump has two inclined surfaces, and an included angle between the inclined surface of each bump proximate to the fixed valve plate and the peripheral surface of the bottom cover is greater than an included angle between the inclined plane of the bump distal to the fixed valve plate and the peripheral surface of the bottom cover.