Cap Assembly and Bottle Assembly

Abstract

The present application provides a cap assembly and a bottle assembly. The cap assembly includes a cap, an inner cylinder assembly, an elastic member and a blocking member. The cap includes a cap top and a cap side portion. The cap side portion is formed by extending downwardly from an outer edge of the cap top, and the cap top and the cap side portion define a cap cavity. The inner cylinder assembly is connected to the cap top, is arranged in the cap cavity, and forms an annular receiving portion with the cap side portion. The elastic member is arranged in the receiving portion. The blocking member is arranged in the receiving portion below the elastic member. The cap is provided with at least one locking portion for preventing the elastic member and the blocking member from falling from the receiving portion. The cap assembly has a lower height, and gas in a bottle body cavity can be exhausted from the bottle through an exhaust passage during opening of the bottle assembly according to the present application, especially when in an exhaust state.

What is claimed is: 
     
         1 . A cap assembly, characterized by comprising:
 a cap ( 102 ) comprising a cap top ( 122 ) and a cap side portion ( 124 ) being formed by extending downwardly from an outer edge of the cap top ( 122 ), the cap top ( 122 ) and the cap side portion ( 124 ) defining a cap cavity ( 128 );   an inner cylinder assembly ( 104 ) connected to the cap top ( 122 ), arranged in the cap cavity ( 128 ), and forming an annular receiving portion ( 302 ) with the cap side portion ( 124 );   an elastic member ( 106 ) arranged in the receiving portion ( 302 ); and   a blocking member ( 108 ) arranged in the receiving portion ( 302 ) below the elastic member ( 106 );   wherein the cap ( 102 ) is provided with at least one locking portion ( 126 ) for preventing the elastic member ( 106 ) and the blocking member ( 108 ) from falling from the receiving portion ( 302 ).   
     
     
         2 . The cap assembly according to  claim 1 , wherein
 the elastic member ( 106 ) is a wave spring, and the blocking member ( 108 ) is annular.   
     
     
         3 . The cap assembly according to  claim 1 , wherein
 each of the at least one locking portion ( 126 ) is arranged on an inner surface of the cap side portion ( 124 ) and is formed by extending inwardly from the inner surface; and   the blocking member ( 108 ) is provided with at least one recess ( 152 ) formed by being recessed inwardly in an outer edge of the blocking member ( 108 ), and the at least one recess ( 152 ) is arranged to correspond to the at least one locking portion ( 126 ).   
     
     
         4 . The cap assembly according to  claim 1 , wherein
 each of the at least one locking portion ( 126 ) is arranged at a distance from a lower surface of the cap top ( 122 ) to accommodate the elastic member ( 106 ) and the blocking member ( 108 ).   
     
     
         5 . The cap assembly according to  claim 1 , wherein
 The at least one locking portion ( 126 ) of the cap assembly is configured to cooperate with at least one locking receiving portion ( 206 ) of a bottle, and the elastic member ( 106 ) is configured such that the elastic member ( 106 ) applies opposite forces to the bottle and the cap ( 102 ) when the at least one locking portion ( 126 ) is accommodated in the at least one locking receiving portion ( 206 ), so as to hold the at least one locking portion ( 126 ) in the at least one locking receiving portion ( 206 ).   
     
     
         6 . A bottle assembly, characterized by comprising:
 the cap assembly of  claim 1 ; and   a bottle defining an annular mouth ( 202 ), the mouth ( 202 ) being capable of being received in the cap cavity ( 128 ).   
     
     
         7 . The bottle assembly according to  claim 6 , wherein
 the bottle comprises a bottle head ( 200 ) provided with at least one locking passage ( 204 ), the at least one locking passage ( 204 ) is arranged to correspond to the at least one locking portion ( 126 ) for accommodating the locking portion ( 126 ).   
     
     
         8 . The bottle assembly according to  claim 7 , wherein
 each of the at least one locking passage ( 204 ) is arranged on an outer surface of the bottle head ( 200 ), and is formed by recessed downwardly and to one side from the mouth ( 202 );   wherein each of the at least one locking passage ( 204 ) is further provided with a locking receiving portion ( 206 ), and a top of the locking receiving portion is higher than a top of the locking passage ( 204 ) adjacent thereto.   
     
     
         9 . The bottle assembly according to  claim 8 , wherein
 the bottle assembly has a closed state and an exhaust state, when the bottle assembly is in the closed state, the locking portion ( 126 ) is located in the locking receiving portion ( 206 ) and when the bottle assembly is in the exhaust state, the locking portion ( 126 ) is located in the locking passage ( 204 ) between the locking receiving portion ( 206 ) and the mouth ( 202 ).   
     
     
         10 . The bottle assembly according to  claim 9 , further comprising:
 a first seal ring ( 132 ) sleeved on the inner cylinder assembly ( 104 ); and   a second seal ring ( 134 ) sleeved on the inner cylinder assembly ( 104 ) and is located below the first seal ring ( 132 );   wherein when the bottle assembly is in the closed state, the first seal ring ( 132 ) and the second seal ring ( 134 ) contact the bottle; and when the bottle assembly is in the exhaust state, the first seal ring ( 132 ) contacts the bottle and the second seal ring ( 134 ) is disengaged from the bottle.   
     
     
         11 . The bottle assembly according to  claim 10 , wherein
 the bottle head ( 200 ) is provided with an exhaust passage ( 208 ), and the exhaust passage ( 208 ) is arranged through the bottle head ( 200 );   wherein when the bottle assembly is in the exhaust state, the first seal ring ( 132 ) and the second seal ring ( 134 ) are respectively located above and below the exhaust passage ( 208 ).