Cap manipulator and cap assembly

A cap manipulator, the cap manipulator being used for a cap with an insertion space, the cap manipulator comprising:

• a first airbag member, a second airbag member and a third airbag member, and
• an airstream channel structure connected between the first airbag member and the second airbag member, and configured to enable an inner space of the first airbag member to communicate with an inner space of the second airbag member,
• wherein the first and second airbag members and the airstream channel structure are configured such that under a condition that the second airbag member is squeezed, a volume of the first airbag member is larger than a volume of the insertion space, and under a condition that the second airbag member is not squeezed, the volume of the first airbag member is smaller than or equal to the volume of the insertion space;
• wherein the airstream channel structure comprises a first end surface, a second end surface, and a channel between the first end surface and the second end surface and running through the airstream channel structure;
• wherein the first airbag member is arranged at the first end surface, the second airbag member is arranged at the second end surface, and the inner space of the first airbag member communicates with the inner space of the second airbag member through the channel;
• and
• wherein the third airbag member is in the channel, and the first airbag member, the second airbag member and the third airbag member are connected integrally.

A cap assembly, comprising:

• a cap with an insertion space, and
• a cap manipulator, comprising a first airbag member and a second airbag member, and an airstream channel structure connected between the first airbag member and the second airbag member, and configured to enable an inner space of the first airbag member to communicate with an inner space of the second airbag member,
• wherein the first and second airbag members and the airstream channel structure are configured such that under a condition that the second airbag member is squeezed, a volume of the first airbag member is larger than a volume of the insertion space, and under a condition that the second airbag member is not squeezed, the volume of the first airbag member is smaller than or equal to the volume of the insertion space;
• wherein a portion of an outer surface of the airstream channel structure is provided a mating portion, the mating portion is connected to the first airbag member and is configured to mate with an inner surface of the insertion space;
• wherein the cap manipulator is configured to be in a first state in which the first airbag member is inside the insertion space or in a second state in which the first airbag member is pulled out of the insertion space;
• wherein the cap comprises a first member and a second member connected to the first member, the insertion space is at an end surface of the first member away from the second member, and an outer circumferential surface of the second member is threaded;
• and
• wherein under a condition that the cap manipulator is in the first state, at least a portion of the airstream channel structure is in the insertion space, so that the mating portion is configured to drive the first member to rotate when the airstream channel structure is rotated.