Hot-water bag

Abstract

The invention relates to a hot-water bag. The hot-water bag comprises a bag body, and a water storage cavity is formed in the bag body to form a heating part of the hot-water bag; a model is arranged on the outer surface of the bag body; the hot-water bag further comprises at least one heat expansion and cold contraction device; heat conduction is formed between the heat expansion and cold contraction device and the water storage cavity, so that the heat expansion and cold contraction device is expanded when the temperature of the water storage cavity rises, and the heat expansion and cold contraction device is contracted when the temperature of the water storage cavity is lowered; at least one component of the model is driven by heat expansion and cold contraction motions of the heat expansion and cold contraction device, so that when the heat expansion and cold contraction device is in the expansion state and the contraction state, the components driven by the heat expansion and cold contraction device are in the two different states correspondingly. Compared with the prior art, the hot-water bag has the advantages that a person can judge either the hot-water bag is in the warming state or the cooling state according to the outer surface of the hot-water bag, and the hot-water bag is quite interesting.

Description

technical field [0001] The solution of the present invention relates to the field of manufacturing a hot water bag Background technique [0002] As a kind of heating equipment, hot water bag can be seen everywhere. Hot water bag generally includes a bag body, and a water storage cavity is arranged in the bag body to form a heating part. With the improvement of living standards, people put forward higher requirements for hot water bags. While heating, hot water bags Can also please people's mood, the outer surface of hot water bag is designed into various moldings, common such as the outer surface of hot water bag is designed as the cartoon image of animal, makes people fondle admiringly, but there are some common shortcomings in the hot water bag of prior art: one, People can't judge whether the hot water bag is in a warm state or a cold state by the outer surface of the hot water bag, they must touch the hot water bag with their hands to perceive it. Contents of the inven...

AI Technical Summary

Problems solved by technology

[0002] As a kind of heating equipment, hot water bag can be seen everywhere. Hot water bag generally includes a bag body, and a water storage cavity is arranged in the bag body to form a heating part. With the improvement of living standards, people put forward higher requirements for hot water bags. While heating, hot water bags Can also please people's mood, the outer surface of hot water bag is designed into various moldings, common such as the outer surface of hot water bag is designed as the cartoon image of animal, makes people fondle admiringly, but there are some common shortcomings in the hot water bag of prior art: one, People cannot judge whether the hot water bag is in a warm state or a cold state through the outer surface of the hot water bag. It must be felt by touching the hot water bag. Second, the shape on the outer surface of the hot water bag does not move and lacks interest.

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