JPH0638961U - Medical bed reclining assist device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the burden on nurses and caregivers with a reclining assist device that can be applied to existing medical beds. [Structure] The reclining auxiliary device 10 includes an electric motor 12 and a chuck 14 rotated by the electric motor 12. The chuck 14 comprises an axial portion 28 of a bend 26 in the crank 24 of the medical bed.
And a shape that fits in the radial portion 30. Electric motor 1
When starting 2, the chuck 14 rotates about the axial portion 28 and drives the radial portion 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for assisting reclining in an existing medical bed, that is, a medical bed having a manual reclining mechanism.

[0002]

[Prior art and its problems]

 A medical bed having a manual reclining mechanism is as shown in FIG. 7, and is connected to a cylinder 114 that converts the rotational movement of the crank 112 into a linear movement and a linear rod 116 of the cylinder 114, and a bed body 118. And a hoisting lever 120 for tilting a part of Reclining work is a considerable amount of hard work, and when a large number of medical beds are installed in a hospital, it often forces nurses to perform work other than medical care. The same applies to caregivers at home.

In order to alleviate this labor, there is a medical bed with an electric actuator, but since this medical bed is expensive, the existing medical bed with a manual reclining mechanism is discarded and newly introduced. There are cost issues.

An object of the present invention is to provide a reclining auxiliary device for reducing the labor of a nurse or a carer who can use an existing medical bed with a manual reclining mechanism as it is.

[0005]

[Means for Solving the Problems]

 The present invention comprises, firstly, an electric motor and a chuck rotated by an output shaft of the electric motor, the chuck comprising an axial portion and a radial portion of a bending portion of a crank of a medical bed. The above-mentioned problems have been solved by a reclining assisting device having a shape that fits in.

Secondly, the present invention relates to an electric motor fixed to a bed, an annular wheel rotated by an output shaft of the electric motor and surrounding a crank shaft of a medical bed, and an axial wheel from the wheel. The above problem is solved by a reclining assist device having a projecting drive pin.

[0007]

[Action]

 The reclining assist device according to the first invention is portable and is used by a nurse or a caregiver to rotate a crank of a reclining mechanism of a medical bed. The chuck fits into both the axial and radial parts of the crank of the medical bed, so when the electric motor is activated and the chuck rotates around the axial part of the crank, the radial part of the crank is also driven. It

Since there are various types of medical beds and the shape of the crank is different depending on the types, a plurality of types of chucks are prepared and a chuck is detachable so that the reclining assist device can be used for various types of medical beds. It is preferable that

Further, a speed reducer may be interposed between the electric motor and the chuck, or a grip may be provided on the housing of the electric motor.

The reclining assist device according to the second invention is of a fixed type on the medical bed, and is attached to the back surface or the like of the medical bed. An annular wheel surrounding the crank shaft is rotated by an electric motor, and a drive pin protruding from this wheel abuts a radial portion of the crank to rotate the crank.

[0011]

【Example】

 FIG. 1 shows an embodiment of a portable reclining auxiliary device corresponding to the first invention. The reclining assist device 10 of this embodiment includes an electric motor 12 with a speed reducer, a chuck 14 attached to the electric motor 12, and a battery 16. A grip 20 is provided in the housing 18 of the electric motor 12. Reference numeral 22 is a switch, and the electric motor 12 can rotate in the forward and reverse directions.

A large number of chucks 14 are prepared and detachable so that the reclining assist device 10 can be applied to a plurality of types of medical beds. The chuck 14 and the electric motor 12 are locked by a ball spring. The chuck 14 is shaped to fit into the axial portion 28 and the radial portion 30 of the bend 26 in the crank 24 of the medical bed. That is, the chuck 14 has a circular opening 34 that fits into the bush 32 of the crank 24 and a rectangular opening 36 that fits into the radial portion 30 of the crank 24.

When a nurse or a caregiver grasps the grip 20 and inserts the chuck 14 into the crank 24 and operates the switch 22, the chuck 14 rotates about the axial portion 28 of the crank 24, and the radial portion 30. The part that fits in drives the crank 24. Thereby, the medical bed performs a reclining operation.

FIG. 2 and FIG. 3 show another embodiment of the portable reclining auxiliary device corresponding to the first invention. The reclining assist device 40 of this embodiment includes an electric motor 42, a speed reducer 46, and a chuck 44. A grip 50 is provided on the housing 48 of the electric motor 42. Reference numeral 52 is a switch, and the electric motor 42 can rotate in the forward and reverse directions.

The speed reducer 46 includes a drive gear 56 attached to the output shaft 54 of the electric motor 42, a driven gear 58 meshing with the drive gear 56, and a housing 60. The chuck 44 is fixed to one side surface of the driven gear 58. The chuck 44 is shaped to fit into the axial portion 68 and the radial portion 70 of the bent portion 66 of the crank 64 of the medical bed. That is, the chuck 44 has a circular opening 74 that fits in the bush 72 of the crank 64, and a rectangular opening 76 that fits in the radial portion 70 of the crank 64. The operation is similar to that of the embodiment corresponding to FIG.

Next, FIGS. 4 to 6 show an embodiment of a reclining assist device corresponding to the second invention. The reclining assist device 80 of the present embodiment has an electric motor 82, a speed reducer 86, and a drive pin 84, and is of a type fixed to a medical bed. The electric motor 82 is fixed to the frame 90 of the medical bed 88 with a metal fitting 92.

The speed reducer 86 includes a drive gear 96 attached to the output shaft 94 of the electric motor 82, a driven gear 98 meshing with the drive gear 96, and a housing 100. The driven gear 98 is an annular wheel whose outer periphery is supported by the housing 100, and surrounds the shaft of the crank 104. The housing 100 is also provided with a hole, and the shaft of the crank 104 penetrates the driven gear 98 and the housing 100.

A drive pin 84 protruding in the axial direction on the handle side is fixed to the driven gear 98. The drive pin 84 is long enough to contact the radial portion 110 of the crank 104.

The reclining assist device 80 is operated by a switch 102 that extends to the frame of the medical bed. When the switch 102 is turned on, the electric motor 82 is activated and the drive pin 84 rotates via the speed reducer 86. The drive pin 84 contacts the radial portion 110 of the crank 104 to rotate the crank 104.

[0020]

[Effect of device]

 The reclining assist device according to claim 1 can be applied to a medical bed having an existing manual reclining mechanism to reduce the work of reclining ups and downs which is conventionally performed manually by a nurse or a caregiver.

The reclining assist device according to claim 2 can be installed in an existing medical bed having a manual reclining mechanism without any modification, and the reclining assisted by a nurse or a caregiver can be performed manually. The undulating work can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a reclining assist device according to the present invention.

FIG. 2 is a cross-sectional view of another embodiment of the reclining assist device according to the present invention.

3 is a perspective view of a chuck constituting the reclining assist device of FIG. 2. FIG.

FIG. 4 is a sectional view of still another embodiment of the reclining assist device according to the present invention.

5 is a perspective view showing a usage example of the reclining assisting device of FIG. 4. FIG.

6 is a perspective view showing an example of fixing the electric motor of the reclining assist device of FIG.

[Explanation of symbols]

 10,40,80 Reclining assist device 12,42,82 Electric motor 14,44 Chuck 20,50 Grip 22,52 102 Switch 24,64,104 Crank 26,66 Bending part 28,68 Axial part 30,70,110 Radial portion 32,72 Bushing 34,74 Circular opening 36,76 Rectangular opening 46,86 Reduction gear 54,94 Output shaft 56,96 Drive gear 58,98 Driven gear 84 Drive pin

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[Procedure amendment]

[Submission date] August 4, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a reclining assist device according to the present invention.

FIG. 2 is a cross-sectional view of another embodiment of the reclining assist device according to the present invention.

3 is a perspective view of a chuck constituting the reclining assist device of FIG. 2. FIG.

FIG. 4 is a sectional view of still another embodiment of the reclining assist device according to the present invention.

5 is a perspective view showing a usage example of the reclining assisting device of FIG. 4. FIG.

6 is a perspective view showing an example of fixing the electric motor of the reclining assist device of FIG.

FIG. 7 is a front view of a medical bed equipped with a conventional manual reclining mechanism.

[Explanation of reference numerals] 10, 40, 80 Reclining assist device 12, 42, 82 Electric motor 14, 44 Chuck 20, 50 Grip 22, 52 102 Switch 24, 64, 104 Crank 26, 66 Bending portion 28, 68 Axial portion 30, 70, 110 Radial portion 32, 72 Bushing 34, 74 Circular opening 36, 76 Rectangular opening 46, 86 Reduction gear 54, 94 Output shaft 56, 96 Drive gear 58, 98 Driven gear 84 Drive pin

Claims (2)

[Scope of utility model registration request] 1. A shape comprising an electric motor and a chuck rotated by an output shaft of the electric motor, wherein the chuck is fitted to an axial portion and a radial portion of a bent portion of a crank of a medical bed. A reclining auxiliary device, characterized in that 2. An electric motor fixed to the bed, an annular wheel rotated by an output shaft of the electric motor and surrounding a crank shaft of the medical bed, and a drive pin axially protruding from the wheel. A reclining assisting device, characterized in that