Double-layer rotary lid inside and outside
A double-layer, rotary technology, used in drinking utensils and other directions
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[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0019] refer to Figure 1 to Figure 3 , the inner and outer double-layer rotating cup lid, the cup lid 1 is provided with an inner cup 2, the bottom of the inner cup 2 is provided with a boss 3, and the inner side of the boss 3 is provided with a thread;
[0020] The mouth of the inner cup 2 is larger than the mouth of the cup lid 1, and the inner cup 2 matches the boss by setting a gap 4 on the side wall and setting the boss bolt 6 on the inner surface of the movable rotating cover 5 at the end of the cup lid 1. 3. The inner thread rotates so that the inner cup 2 shrinks inside the cup cover 1;
[0021] In the present invention, the mouth of the inner cup 2 is larger than the mouth of the cup cover 1, because the inner cup 2 can be retracted into the inner cup 2 by setting a gap 4 on the side wall, so that the inner cup 2 The side wall is always in the sta...
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