Patent ID: 9021638
Filing Date: 2015-05-05
Classification: A47C,A61G

Abstract:
1. A mattress comprising: a plurality of cells aligned and disposed on a body pressure working surface of a substrate that supports a human body; and a pressure control member that changes a height of each cell by adjusting a pressure in a fluid chamber formed within the cell, wherein the cells are configured such that as each cell is inflated by fluid supplied to the fluid chamber within the cell, the height of each cell increases and a width dimension of each cell in a direction of alignment decreases, and that peripheral portions of adjacent cells in the direction of alignment are overlapped with each other prior to cell inflation, wherein a maximum width dimension of the cell in the direction of alignment in a maximum inflated condition of the cell is set within a range of 90 to 100% of a pitch dimension of the cells in the direction of alignment, the pitch dimension being defined by a spacing between centers of adjacent cells in the direction of alignment, wherein a port penetrates through a bottom portion of each cell so that the fluid is supplied to and exhausted from the fluid chamber of each cell through the port, wherein a mounting sheet is arranged under the bottom portion of each cell, the mounting sheet having a through hole that the port is arranged to penetrate through, and the mounting sheet being integrally connected to each cell with a periphery of the through hole being welded to the port, and wherein the mounting sheet is provided with a mounting member that is detachably mounted on a mounted member provided on a side of the substrate so that each cell is detachably fixed on the substrate.