Bottle Cap with Additive Supply Structure

Abstract

A bottle cap with additive supply structure, comprising a bottle cap body and a storage cap; the bottle cap body comprises a first top and a first outer skirt part; the storage cap comprises a second top and a second outer skirt part, the second top, the second external skirt and a crackable part form a sealed storage space. In the invention, the additives are placed in the storage cap, the storage cap is mounted in the mounting groove, sealing performance of the storage space is better, and the additives can be prevented from being affected by damp and going bad. The bottle cap body is provided with the crackable part, the crackable part can be opened only by knocking on the storage cap downwards during use, making the additives fall into a bottle body so as to be mixed with bottled contents.

What is claimed is: 
     
         1 . A bottle cap with additive supply structure, which comprises a bottle cap body ( 1 ), is characterized by: the bottle cap also comprises a storage cap ( 2 ) connected to the bottle cap body ( 1 ) which comprises a first top ( 3 ) and a first outer skirt part ( 5 ) arranged at the lower end of the first top ( 3 ); a mounting groove ( 8 ) used for installing the storage cap ( 2 ) is arranged at the lower end of the first top ( 3 ) and comprises a grooved wall ( 9 ) arranged at the lower end of the first top ( 3 ) and a crackable part ( 10 ) arranged at the bottom of a grooved wall ( 9 ), and the crackable part ( 10 ) and the grooved wall ( 9 ) are an integrated structure; the storage cap ( 2 ) comprises a second top ( 4 ) and a second outer skirt part second outer skirt part ( 6 ) arranged at the lower end of a second top ( 4 ), and is installed in a mounting groove ( 8 ); the second top ( 4 ), the second outer skirt part second outer skirt part ( 6 ) and the crackable part ( 10 ) form a sealed storage space ( 15 ). 
     
     
         2 . The bottle cap with additive supply structure according to  claim 1 , characterized in that the crackable part ( 10 ) comprises a middle part ( 11 ) and an edge part ( 12 ) close to the grooved wall ( 9 ); the thickness of the edge part ( 12 ) is smaller than that of the middle part ( 11 ). 
     
     
         3 . The bottle cap with additive supply structure according to  claim 1 , characterized in that the thickness of the edge part ( 12 ) is between 0.01-0.5 mm. 
     
     
         4 . The bottle cap with additive supply structure according to  claim 1 , characterized in that the edge part ( 12 ) is provided with a thickening part ( 13 ) which is an integrated structure with the edge part ( 12 ) and the middle part ( 11 ). 
     
     
         5 . The bottle cap with additive supply structure according to  claim 1 , characterized in that an annular groove ( 19 ) is arranged in the groove wall ( 9 ), the second outer skirt part ( 6 ) is provided with an annular boss ( 20 ) at the position corresponding to the annular groove ( 19 ), and the storage space ( 15 ) is clamped in the annular groove ( 19 ) to seal with the annular boss ( 20 ). 
     
     
         6 . The bottle cap with additive supply structure according to  claim 1 , characterized in that the first top ( 3 ) is provided with a step hole ( 7 ) of which the diameter is larger than that of the mounting groove ( 8 ); the mounting groove ( 8 ) is communicated with the step hole ( 7 ), and the periphery of the second top ( 4 ) is provided with an annular flange ( 14 ) fit to the step hole ( 7 ).