Airtight loose powder case structure having powder puff

Abstract

An airtight loose powder case structure having a powder puff includes a base, an upper lid, an inner cup, the powder puff, and an inner lid, where the powder puff is provided in the inner cup; the inner cup is provided in the base; the upper lid overlays an opening of the base; screw threads matched with each other are respectively provided on the upper lid and the opening of the base; the inner lid is located under the upper lid; the inner lid is configured to move freely relative to the upper lid in an axial direction; the inner lid is configured to rotate freely relative to the upper lid in a circumferential direction; a seal ring is provided under the inner lid; the seal ring is configured to abut against an inner side of the inner cup; and the powder puff is located in the seal ring.

What is claimed is: 
     
         1 . An airtight loose powder case structure having a powder puff,
 comprising a base, an upper lid, an inner cup, the powder puff, and an inner lid wherein the powder puff is provided in the inner cup; the inner cup is provided in the base; the upper lid overlays an opening of the base; the upper lid is configured to seal and unseal the opening of the base; screw threads matched with each other are respectively provided on the upper lid and the opening of the base; the inner lid is configured to seal and unseal an opening of the inner cup; the inner lid is located under the upper lid; the inner lid is configured to move freely relative to the upper lid in an axial direction; the inner lid is configured to rotate freely relative to the upper lid in a circumferential direction; a circle of seal ring is provided under the inner lid; the seal ring is configured to abut against an inner side of the inner cup; and the powder puff is located in the seal ring.   
     
     
         2 . The airtight loose powder case structure having the powder puff according to  claim 1 , wherein in order that the inner lid is configured to move freely relative to the upper lid in the axial direction, and the inner lid is configured to rotate freely relative to the upper lid in the circumferential direction, a circle of groove is formed at an inner side of the upper lid; a circle of protrusion is provided at an outer side of the inner lid; the protrusion is movably located in the groove; and in the axial direction of the inner lid, a height of the groove is greater than a height of the protrusion. 
     
     
         3 . The airtight loose powder case structure having the powder puff according to  claim 2 , wherein the groove has a trumpet-shaped rabbet, an upper side of the protrusion is oblique, and a lower side of the protrusion is horizontal. 
     
     
         4 . The airtight loose powder case structure having the powder puff according to  claim 2 , wherein in the axial direction of the inner lid, the seal ring has a U-shaped section; a circle of shoulder is provided in the opening of the inner cup; a bottom of the U-shaped seal ring is configured to abut against the shoulder of the inner cup; and the powder puff is located in the inner cup within the shoulder. 
     
     
         5 . The airtight loose powder case structure having the powder puff according to  claim 4 , wherein a circle of downward clamping rabbet is formed at a periphery of the inner cup; and the downward clamping rabbet is clamped and sleeved on a periphery of the opening of the base. 
     
     
         6 . The airtight loose powder case structure having the powder puff according to  claim 3 , wherein in the axial direction of the inner lid, the seal ring has a U-shaped section; a shoulder is provided in the opening of the inner cup; a bottom of the U-shaped seal ring is configured to abut against the shoulder of the inner cup; and the powder puff is located in the inner cup within the shoulder. 
     
     
         7 . The airtight loose powder case structure having the powder puff according to  claim 6 , wherein a downward clamping rabbet is formed at a periphery of the inner cup; and the downward clamping rabbet is clamped and sleeved on a periphery of the opening of the base.