| 摘要 |
PURPOSE:To allow the subject seat body to have an optimum cushion property irrespective of whether person's weight is heavy or light by inserting an elastic supporting member which sinks in the lower direction by external force between a seat receiving part in an outer shell body and a seating part in a seat body. CONSTITUTION:When the weight of a person is applied to a cushion material 7 on a seat body 5, an elastic supporting member 6 inserted through between a seat receiving part 4a of an outer shell body 4 and a seating part 5a of the seat body 5 is reduced in accordance with whether its weight F1 is heavy or light, and the seating part 5a sinks in. In such a case, a back reclining part 5b of the sea body 5 also moves in the lower direction, but a relative vertical direction shift against a back reclining receiving part 4b of the outer shell body 4 is allowable in a part of a connecting means 9. Also, when a person reclines against the back reclining part 5b of the seat body 5, the back reclining part 5b is curved backward in accordance with the magnitude of its backward external force F2, and the back reclining receiving part 4b of the outer shell body 4 is curved backward through an interval holding body 8 of its part. Since both these parts are elastic members, bending resistance force also becomes large in accordance with magnitude of the external force F2. |
