| 摘要 |
PURPOSE: To make a joint member, a connection member and a closing member not project over a lying face of an ejection mat so as to ensure the comfort of the lying by holding the distributing pipes of the members airtightly and rotatably in a plug housing member juxtaposed to the mat member. CONSTITUTION: Projections 12 in the shape of spherical crown are distributed regularly on an upper side 11 of a mat member 10. Air outlet openings 13 are provided in gaps between projections 12. A housing 15 is formed on a lower side 14 of the mat member 10, and an inlet device 46 is engaged in the housing 15. In inside of an ejection mat, four mat members 10 are connected with each other via a connection member 30. A room 38 is formed with the box-shaped connection member 30, and in this case, distribution pipes 31 and 33, or distribution pipes 32 and 34 are arranged in parallel with each other on the sides opposite to the longitudinal side walls 17 of the mat members 10. Each distribution pipe has a supporting flange 35 and bellows 36 via which the mechanical support and the airtight connection are attained.
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