Cosmetic pen with continuously discharging mechanism

Abstract

A cosmetic pen with continuously discharging mechanism comprises: an elongate body with a pen head coupled at one end thereof. The elongate body comprises a material-pushing assembly, a driving assembly, a material bin and a check valve; the material-pushing assembly includes a central shaft coupled to the driving assembly at one end, and a spiral blade attached thereto at the other end; when the spiral shaft is driven by the driving assembly, material stored within the material bin is extruded by the spiral motion of the spiral blade toward the pen head so as to provide a steady supply of material to the pen head to facilitate smooth and continuously deployment of the material through the pen head; and the amount of released cosmetic material is controlled by controlling rotation number of the spiral blade, thus preventing waste.

I claim: 
     
         1 . A cosmetic pen with continuously discharging mechanism, comprising:
 an elongate body with a pen head coupled at one end thereof, wherein the elongate body comprises a material-pushing assembly, a driving assembly, a material bin and a check valve;   the material-pushing assembly comprises a central shaft coupled to the driving assembly at one end, and a spiral blade attached thereto at the other end; when the central shaft is driven by the driving assembly, material store within the material bin is extruded by spiral motion of the spiral blade toward the pen head so as to provide a steady supply of material to the pen head to facilitate smooth and continuously deployment of the material through the pen head.   
     
     
         2 . The cosmetic pen according to  claim 1 , wherein the spiral blade has a cylindrical overall configuration or a conical overall configuration. 
     
     
         3 . The cosmetic pen according to  claim 1 , wherein the driving assembly comprises a battery, a driving motor and a power switch. 
     
     
         4 . The cosmetic pen according to  claim 3 , wherein the driving motor comprises a low-voltage direct current motor and a reduction gear set. 
     
     
         5 . The cosmetic pen according to  claim 3 , wherein the power switch is located on a side surface of the elongate body, such that the power switch is convenient for a user to press. 
     
     
         6 . The cosmetic pen according to  claim 1 , further comprising an anti-overflow assembly, wherein the anti-overflow assembly is arranged in the pen head or a low portion of the material bin. 
     
     
         7 . The cosmetic pen according to  claim 1 , wherein the check valve is located at an upper end of the material bin. 
     
     
         8 . The cosmetic pen according to  claim 1 , wherein the check valve is a one-way valve to allow air enter into the material bin while prevent the material in the material bin from flowing out.