Adjustable bed
First Claim
1. An adjustable bed comprising a platform having a first surface member and a second surface member disposed adjacently in a longitudinal direction of the bed, and a Gatch mechanism for performing a Gatch action to raise a platform surface of the first surface member from a reference bed surface, whereinthe Gatch mechanism includes a parallel link mechanism formed from a first arm group that lies in the longitudinal direction of the bed and a second arm group disposed at an angle intersecting the reference bed surface, with the first surface member being coupled to the second arm group by a coupling part, andas a result of the second arm group, when the Gatch action is performed, being translationally driven while maintaining the angle intersecting the reference bed surface, the Gatch mechanism raises the platform surface of the first surface member from the reference bed surface due to a circular motion of the coupling part around an imaginary rotation center located at a prescribed height above the second surface member.
1 Assignment
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Accused Products
Abstract
An adjustable bed that enables a Gatch mechanism to be operated in an excellent fashion to match the flexing of a care recipient'"'"'s body, and that is, moreover, useable as a superior low platform bed for care recipients. To this end, a parallel link mechanism having a pair of perpendicular arms is provided in the adjustable bed as part of a sitting-up mechanism, and by always keeping these arms in a perpendicular position, the sitting-up mechanism is operated with a position removed from the surface of a lower-back board by a prescribed interval as an imaginary rotation center when the bed is driven. This prevents any slippage of the care recipient'"'"'s body in relation to the platform surface, thereby suppressing the occurrence of bedsores and realizing a natural sitting-up action that takes account of the care recipient'"'"'s body movement.
58 Citations
7 Claims
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1. An adjustable bed comprising a platform having a first surface member and a second surface member disposed adjacently in a longitudinal direction of the bed, and a Gatch mechanism for performing a Gatch action to raise a platform surface of the first surface member from a reference bed surface, wherein
the Gatch mechanism includes a parallel link mechanism formed from a first arm group that lies in the longitudinal direction of the bed and a second arm group disposed at an angle intersecting the reference bed surface, with the first surface member being coupled to the second arm group by a coupling part, and as a result of the second arm group, when the Gatch action is performed, being translationally driven while maintaining the angle intersecting the reference bed surface, the Gatch mechanism raises the platform surface of the first surface member from the reference bed surface due to a circular motion of the coupling part around an imaginary rotation center located at a prescribed height above the second surface member.
Specification