| 摘要 |
2 3 MATTRESS APPARATUS A B S T R A C T A MATTRESS APPARATUS INCLUDES A SPRING UNIT (5) HAVING A FIRST SPRING UNIT PORTION (7) LOCATED IN ONE END PORTION IN A LONGITUDINAL DIRECTION AND A SECOND SPRING UNIT PORTION (8) LOCATED IN A PORTION EXCEPT THE ONE END PORTION IN THE LONGITUDINAL DIRECTION, THE FIRST SPRING UNIT PORTION (7) AND THE SECOND SPRING UNIT PORTION (8) BEING ARRANGED WITH A PREDETERMINED 10 GAP (9) THEREBETWEEN, A MOVABLE ROD MEMBER (17) FORMED INTEGRALLY WITH THE FIRST SPRING UNIT PORTION (7) IN A PERIPHERAL PORTION OF THE FIRST SPRING UNIT PORTION (7), A FIXED ROD MEMBER (18) FORMED INTEGRALLY WITH THE SECOND SPRING UNIT PORTION (8) IN A PERIPHERAL PORTION 15 OF THE SECOND SPRING UNIT PORTION (8), A HINGE MECHANISM (21) WHICH CONNECTS THE MOVABLE ROD MEMBER (17) AND THE FIXED ROD MEMBER (18), SUCH THAT THE MOVABLE ROD MEMBER (17) IS ROTATABLE RELATIVE TO AND HELD TO THE FIXED ROD MEMBER (18) AT A SPECIFIED 20 ROTATION ANGLE, AN EXTERIOR BODY (47) COVERING A STACKED BODY MADE OF THE SPRING UNIT (5) AND A RESILIENT SHEET (46) STACKED ON AT LEAST AN UPPER SURFACE OF UPPER AND LOWER SURFACES OF THE SPRING UNIT (5). 25
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