Beds – Invalid bed or surgical support – Sectional user supporting surface
Patent
1994-04-28
1996-03-12
Milano, Michael J.
Beds
Invalid bed or surgical support
Sectional user supporting surface
5616, A47B 702
Patent
active
054975182
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a rotary-type bed used mainly by physically-handicapped or aged people.
PRIOR ART STATEMENT
The present inventor has conventionally manufactured and commercially sold a rotary-type bed which comprises a rotary bed frame, rotatable around a vertical axis, disposed in the middle between the front and rear portions of a fixed bed frame provided with front and rear screens; a movable mat support receiving a mat comprising at least a back receiving part, a waist receiving part and a leg receiving part independently foldable, attached to this rotary bed frame; and a driving mechanism to enable the user to get down from a side of the bed frame without being disturbed by the screen by rotating the rotary bed frame by about 90.degree., and to change his or her posture from lying down to sitting down by turning up the back receiving part and at the same time by lowering down the leg receiving part. The conventional rotary-type bed has, however, a construction in which the width of the bed frame placed stationarily on the floor surface is as wide as the mat width, and even when the user is caused to take a posture of sitting, as on an easy chair by turning up the back receiving part prior to rotating the rotary bed frame, an attendant cannot enter into the space between the screen and the upright back receiving part unless they stand up on the bed frame.
DISCLOSURE OF THE INVENTION
The present invention solves the difficulty in an attendant providing nursing care to a physically-handicapped or aged person who is in a sitting posture by entering the space between the front screen and the upright back receiving part, while remaining in a normal standing posture. The rotary-type bed of the present invention comprises a rotary bed frame 6, rotatable around a vertical axis, provided in the middle between the front and rear portions of a fixed bed frame 1 provided with at least a front screen 3 on the front end side and placed on the floor surface; a movable mat support member 23 receiving a mat 32 comprising at least a back receiving portion 23b, a waist receiving portion 23c and a leg receiving portion 23d independently foldable, attached to this rotary bed frame 6; a leg, receiving mat support 41, a receiving mat 42 for receiving legs, provided on the rear end side of the fixed bed frame 1; a reversely rotatable motor 10 and a screw cylinder 13 engaging with a screw shaft 12 rotated at a reduced speed by the motor 10 being attached to a side of said rotary bed frame; and a rotation mechanism A for mechanically rotating the rotary bed frame 6 by about 90.degree. relative to the movement of the screw cylinder and an interlocking mechanism B for causing folding of the back receiving portion 23b, the waist receiving part 23c and the leg receiving portion 23d, the both mechanisms being provided between the screw cylinder 13 and the fixed bed frame 1. This achieves an interlocking structure in which, prior to starting rotation of the rotary bed frame 6, simultaneously with the raising of the back receiving portion 23b, the leg receiving portion 23d is raised so as not to hit the mat 42 for receiving legs. The front side portion of the bed frame at least has a narrow width sufficient to permit stepping over.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partially simplified side view. FIG. 2 is a simplified plan view. FIG. 3 is a partial plan view. FIG. 4 is a partial side view. FIG. 5 is a partial front view. FIG. 6 is a partial plan view. FIG. 7 is a partial side view. FIG. 8 is a plan view of FIG. 7. FIG. 9 is a partially cutaway side view. FIG. 10 is a plan view of FIG. 9. FIG. 11 is a partial plan view illustrating the function of a rotating mechanism A. FIG. 12 is a partial plan view illustrating the function of the rotating mechanism A. FIG. 13 is a plan view illustrating the function of the rotating mechanism A. FIG. 14 is a partial plan view illustrating the function of the rotating mechanism A. FIG. 15 is a partial plan view illustrating the function o
REFERENCES:
patent: 4312500 (1982-01-01), Janssen
patent: 4501414 (1985-02-01), Mason et al.
patent: 4862530 (1989-09-01), Chen
patent: 5095561 (1992-03-01), Green et al.
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