| 摘要 |
PROBLEM TO BE SOLVED: To provide an air-joint for an air mat capable of connecting/separating the air mat and a ventilation pipe with a simple operation. SOLUTION: This air-joint consists of a joint male part 7 and a joint female part 8 with several engagement protrusions 12, 13 inside through holes 10, 11 respectively. The joint male part 7 and the joint female part 8 are connected by inserting the joint male part 7 into the joint female part 8 and rotating them at a prescribed angle to engage the engagement protrusions. And the joint female part is fixed to the air mat, and an L-shaped pipe 9 formed in the joint male part is connected to a ventilation pipe. The joint male part and the joint female part are connected/separated by rotating the joint male part at a prescribed angle relative to the joint female part.
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