To prevent a mattress from shifting in a foot direction when raising the back of a bed, to simultaneously prevent the generation of unpleasant abnormal sound when the upper half side of the mattress is shifted upwards when raising the back and to smoothly shift it.
In the bed 1 in which the back of the mattress mounted on the upper surface of the bed 1 can be raised together with the bed 1, a sheet member 22 of a high frictional coefficient is spread between the back surface of the mattress and the upper surface of the bed 1 at a part corresponding to the buttocks of a person lying on the mattress, and slide resistance force is increased for slide between the back surface of the mattress and the upper surface of the bed 1 corresponding to a back raising part at the part where the sheet member 22 is spread.
MIMURA MASAKI
| JP2001104100A | 2001-04-17 | |||
| JPH0775657A | 1995-03-20 | |||
| JPS56140358U | 1981-10-23 | |||
| JP2002119388A | 2002-04-23 |
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
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