BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a faucet valve core and, more particularly, to a faucet valve core for a water purifier faucet.

2. Description of the Related Art

A fixed valve plate of a ceramic valve core in the current market has a water inlet and a water outlet. As the water inlet and water outlet have a same opening size, a stable flow rate can thus be ensured. To meet the demand for higher flow rate, the opening of the water inlet and water outlet must be enlarged and so must the size of the ceramic valve core. Moreover, also because water enters the ceramic valve core through a side surface and exits the valve core from a bottom surface thereof, the volume of the valve core inevitably increases.

SUMMARY OF THE INVENTION

In view of the problems and drawbacks of the prior art, the objective of the present invention is to provides a faucet valve core having a higher flow rate and a reduced total size. To achieve the foregoing objective, the faucet valve core includes an outer shell, a bottom cover, a valve stem, a movable valve plate, a fixed valve, and a collar seal.

The bottom cover is connected with a bottom of the outer shell and has a pair of drain holes formed through the bottom cover.

The valve stem is rotatable mounted in the outer shell. A top end of the valve stem is located inside of the outer shell and a bottom end is located outside the outer shell.

The movable valve plate has a top side of the movable valve plate securely connected with the bottom end of the valve stem inside the outer shell.

The fixed valve plate is connected with a bottom side of the movable valve plate and has a pair of water channels formed through the fixed valve plate corresponding to the pair of drain holes of the bottom cover. 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.

Preferably, 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.

Preferably, 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.

Preferably, each bump has two inclined surfaces, and an included angle between the inclined surface of each bump proximate to the movable 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 movable valve plate and the peripheral surface of the bottom cover.

According to the foregoing description, the present invention has the advantages that the fixed valve core of the faucet valve core is conic in shape. The conic design increases the flow rate of the faucet valve core without trading off the size of the faucet valve core because the diameter can be limited under 18.5 mm.

Additionally, water flows in and exits from the bottom of the faucet valve core, the problem of part of the faucet valve being larger in diameter can be resolved, thereby reducing the size of the whole faucet valve core and materials and costs in production.

Further scope of the applicability of the present invention will become apparent from the detailed descriptions given hereinafter. However, it should be understood that the detailed descriptions and specific examples, while indicating preferred embodiments of the present invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention will become apparent to those skilled in the art from this detailed descriptions.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description of the drawings particularly refers to the accompanying figures in which:

FIG. 1 is an exploded perspective view of a faucet valve core in accordance with the present invention;

FIG. 2 is a perspective view of a bottom cover of the faucet valve core in FIG. 1; and

FIG. 3 is a perspective view of a fixed valve plate of the faucet valve in FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIGS. 1-3, the purpose, construction, features, functions and advantages of the present invention can be appreciated and understood more thoroughly through the following detailed description with reference to the attached drawings.

A faucet valve core includes an outer shell 1, a bottom cover 2, a valve stem 3, a movable valve plate 4, a fixed valve plate 5, and a collar seal 6. The bottom cover 2 is connected with a bottom of the outer shell 1. The valve stem 3 is rotatable mounted in the outer shell 1, and a top end of valve stem 3 is located inside of the outer shell 1 and a bottom end is located outside the outer shell 1. The end of the valve stem 3 inside the outer shell 1 is securely connected with a top side of the movable valve plate 4, a bottom side of the movable valve plate 4 is connected with the fixed valve plate 5.

The fixed valve plate 5 has a pair of water channels 51 formed through the fixed valve plate 5. The bottom cover 2 has a pair of drain holes 21 formed through the bottom cover 2 and corresponding to the pair of water channels 51 on the fixed valve plate 5.

The pair of water channels 51 takes the form of a cone, A cross-sectional area of a bottom opening of each water channel 51 adjacent to the bottom cover 2 is greater than a cross-sectional area of a top opening of the water channel 51 adjacent to the movable valve plate 4.

The movable valve plate 4 has two recesses 41 oppositely formed in a protrusion 31 and adjacent to the valve stem 3.

The valve stem 3 has two protrusions 31 formed on and protruding from the bottom end of the valve stem 3 and respectively engaging the recesses 41.

The outer shell 1 has two through holes 11 oppositely formed through the outer shell 1. The bottom cover 2 has two bumps 23 formed on a peripheral surface thereof and respectively engaging the two through holes 11 on the outer shell 1.

Each bump 23 has two inclined surfaces 22. An included angle between the inclined surface 22 of each bump 23 proximate to the fixed valve plate 5 and the peripheral surface of the bottom cover 2 is greater than the inclined plane 22 of the bump 23 distal to the fixed valve plate 5, such that the bumps 23 can easily and firmly engage the respective through holes 11 of the outer shell 1 upon the assembly of the faucet valve core structure.

When in use, the collar seal 6 is mounted between the fixed valve plate 5 and the bottom cover 2.