Importance

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Abstract

A liquid supply joint device whose structure is simplified and that is accordingly composed of a small number of components, is small in size, can be manufactured at low cost, and can prevent liquid leakage under a wide range of conditions without being affected by internal pressure, whether high or low, is provided. The liquid supply joint device includes: a housing 10 that can be placed at at least one of the liquid reservoir and the liquid accepter and has a liquid supply port 11 and a discharge port 12; and a valve body 50 that is placed and movable in the housing 10 and opens or closes the supply port 11 or the discharge port 12 in accordance with movement of the valve body 50. Either the housing 10 or the valve body 50 is composed of an elastic member. The valve body 50 has a sealing face 53 that is generally parallel to the direction of its movements, and the valve body 50 is closed when the sealing face 53 is made to come into contact with the inside wall of the housing 10.

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First Claim