JPH0345709Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) This invention relates to a bed device for patients who are unable to turn over on their own.

(Prior Art) Sick patients who are unable to turn over on their own have to lie on a bed in the same sleeping position for a long period of time. Lying in the same sleeping position for a long period of time causes so-called bedsores, which increases the patient's discomfort. Therefore, it is necessary to change the sleeping position of the sick person from time to time to prevent bedsores.

Therefore, it is desired to develop a bed device that allows a sick person to change his or her sleeping position without relying on his/her own efforts, and various devices have been proposed. For example, a floor plate for a patient to lie on is divided into three parts in the width direction of the bed body, and each floor plate is rotatably provided on the bed body. There is a system in which the sleeping position of a patient lying on the floorboards can be changed by rotating each of these floorboards using a drive mechanism. A prior art example of a bed device having such a structure is Japanese Patent Publication No. 57-25221.

However, in conventional bed devices,
Each of the three divided floor plates is rotated by a separate drive mechanism. Therefore, 3
A total of four drive mechanisms are required to drive one floor plate, which not only complicates the structure, but also
The number of parts increased, leading to higher costs.

(Problem to be solved by the invention) In this way, the conventional bed device had a structure in which the floor plate was divided into three parts and each was driven by a separate drive mechanism, which resulted in a complicated structure and an increase in the number of parts. I was invited.

This idea was created based on the above circumstances, and its purpose was to make it possible to change the sleeping position of a sick person by operating the three-part floorboard with a single drive mechanism. The purpose of the present invention is to provide a bed device.

[Structure of the idea]

(Means and effects for solving the problem) In order to solve the above problem, this invention includes a bed main body, a central floor plate rotatably provided in the widthwise center portion of the bed main body via a support shaft. , a pair of side floor plates connected to each side of the center floor plate at one end in the width direction so as to rotate only in the upward direction; a drive mechanism for rotating the center floor plate via the support shaft; One side that is rotatably provided on the bed main body so as to be in contact with the lower surface of the other end of the side floor plate in the width direction, and that is located on the one end side in the width direction that the center floor plate descends when the center floor plate is rotated. The side floor plate is provided with a roller that comes into contact with the lower surface of the side floor plate and bends the side floor plate in the upward direction. When the center floor plate is rotated, one of the side floor plates located in the rotation direction can be bent at a predetermined angle with respect to the center floor plate by the rollers.

(Example) An example of this invention will be described below with reference to the drawings. FIG. 2 is a plan view of the bed device, which includes a bed body 1. As shown in FIG. The bed main body 1 is comprised of a pair of side members 2 spaced apart from each other in parallel, a head board 3 attached to one longitudinal end of these side members 2, and a foot board 4 attached to the other end. This bed body 1 has casters 1 provided at the four corners of the lower surface.
It is supported by a and can be moved freely.

On the upper surface of the bed main body 1, that is, between the pair of side members 2, a central floor plate 5 having a length spanning almost the entire length in the longitudinal direction of the bed main body 1, and side floor plates 6 on both sides of the central floor plate 5 are arranged. ing. Each floor plate 5, 6 is attached to the upper surface of a rectangular frame 5a, 6a, respectively.

At both longitudinal ends of the lower surface of the central floor plate 5, third
As shown in the figure, connecting members 7 are provided in a protruding manner, and both ends of a first support shaft 8 are fixed to these connecting members 7, respectively. Both ends of the first support shaft 8 protruding from the connection member 7 are rotatably supported by a first support member 9, respectively. These support members 9 are erected on first horizontal rods 11 that are respectively constructed between both ends of the side member 2 in the longitudinal direction. Therefore, the center floor plate 5 is rotatable in the width direction as a fulcrum of the first support shaft 8.

As shown in FIG. 6, a plurality of connecting pieces 12 are provided on both sides of the central floor plate 5 to project at predetermined intervals in the longitudinal direction. Each connecting piece 12 is pivotally connected to a mounting member 13 protruding from one side of each side floor plate 6 by a second support shaft 14 . The mounting member 13 has a substantially U-shaped cross section. Therefore, the side floor plate 6 can freely rotate in the upward direction with respect to the central floor plate 5 shown by the arrow in FIG. It is designed to be stopped by coming into contact with the end face.

A second horizontal rod 15 is installed in the center portion of the pair of side members 2 in the longitudinal direction. At both ends of the second horizontal rod 15 and the pair of first horizontal rods 11, struts 16 are respectively erected as shown in FIG. A roller 1 is attached to the upper end of each column 16.
7 is rotatably provided by a third support shaft 17a whose axis is parallel to the first support shaft 8.
These rollers 17 are in contact with a smooth abutment surface 19 of a band-like abutment member 18 provided on the other end of the lower surface of the side floor plate 6 in the width direction.

One end of a first link 21 is fixed to the axially central portion of the first support shaft 8 . This first link 21 is fixed to the first support shaft 8 in a state substantially orthogonal to the center floor plate 5, and is configured to be rotated by a drive mechanism 22 via the other end. . This drive mechanism 22 is a motor 23
It has a drive source 25 in which a reduction gear 24 and a reduction gear 24 are integrated. This drive source 25 is connected to a fourth support shaft 27 on an inverted U-shaped support 26 provided on the lower surface of the bed main body 1.
It is pivoted by. The support 26 is provided at a position corresponding to the first link 21, and the drive source 25 is provided with its axis extending along the width direction of the bed body 1. When the rotating shaft (not shown) of the drive source 24 is driven, the inner cylinder 29 inserted into the outer cylinder 28 so as to be freely advanced and retracted is driven forward and backward in the axial direction.

One ends of a second link 31 and a third link 32 are pivotally attached to the tip of the inner cylinder 29 located at one end in the width direction of the bed main body 1 by a fourth support shaft 33. The other end of the second link 31 is pivotally connected to a third support shaft 17a that supports a roller 17 at one end of the bed body 1 in the width direction. Furthermore, the other end of the third link 32 is connected to the first link 21.
It is pivotally connected to the other end by a fifth support shaft 34. The second link 31 and the first link 21 are set to be parallel to each other. The drive source 25 of the drive mechanism 22 is connected to the bed main body 1.
The drive can be controlled by operating a control device 35 provided on the lower surface of the device with a hand-held operating section 36 connected thereto. The second link 31 is for pivotally connecting one end of the third link 32 to the bed main body 1 so as to be able to swing freely.

Incidentally, although not shown in the drawings, on each of the above-mentioned floorboards 5 and 6, a pine-tress having a size approximately equal to the total size of these floorboards is placed. This pinerest has a structure that allows it to be bent at a location corresponding to the connecting portion between the central floorboard 5 and the side floorboards 6.

Next, the operation of the bed device having the above configuration will be explained. When changing the sleeping position of a patient lying face up on a mattress, the motor 23 of the drive source 25 is activated to drive the inner cylinder 29 forward and backward.
FIG. 1 shows a case where the inner cylinder 29 is driven in the backward direction, thereby causing the third link 32 to move towards the inner cylinder 29.
9 and move backward in the direction of arrow a. When the inner cylinder 29 moves backward, the third link 32 is interlocked with it, so that the first link 21 and the second link 31, whose other ends are pivotally connected to the third link 32, move in the direction indicated by the arrow b.
It will rotate in the direction. This first link 2
1 rotates, which causes the first support shaft 8 to rotate. Therefore, the central floor plate 5, which is integral with the first support shaft 8, changes from the state shown by the chain line in FIG. 1 to the state shown by the solid line. It rotates and tilts in the same direction as the first link 21.

In this way, when the center floor plate 5 rotates, one end side in the width direction of one of the side floor plates 6 connected to the one end side in the lowering width direction of the center floor plate 5 moves toward the center floor plate 5.
The other end side of the roller 17 comes into contact with an abutment member 18 provided on the lower surface thereof. As a result, one side floor plate 6 located at one end in the width direction of the center floor plate 5 is bent at a predetermined angle with respect to the center floor plate 5. Therefore, a sick person lying face up on the central floorboard 5 should turn his body in the first position.
In the figure, the body can be turned to the right in the same direction as the rotation direction of the center floor plate 5, and the bent side floor plates 6 prevent the body from slipping off the center floor plate 5. At this time, the other side floor plate 6 rotates in a state where it is substantially flush with the center floor plate 5.

Next, when the third link 32 is driven from the backward state shown in FIG. 1 in the forward direction opposite to arrow a, the first and second links 21,
31 rotates in the opposite direction to the arrow b, the center floor plate 5 rotates leftward from the rightward rotated state. Thereby, the patient on the central floorboard 5 can turn his or her body from the right to the left. At this time, one end side of the third link 32 is displaced in the downward direction using the fourth support shaft 27 to which the drive source 25 is pivotally connected as a fulcrum. At this time, the other side floor plate 6 connected in the direction in which the central floor plate 5 descends will be bent upward as the abutment member 18 provided on its lower surface abuts against the roller 17. The patient is prevented from slipping off the center floor plate 5 by the floor plate 6.

Therefore, if the central floorboard 5 is changed from a horizontal state to a state where it is tilted to the right and a state where it is tilted to the left at predetermined intervals, the patient's sleeping position can be changed accordingly. This can prevent bedsores from occurring on the patient's body.

[Effect of idea]

As described above, this invention connects the side floor plates to both sides of the center floor plate in the width direction so that they can rotate only in the upward direction when the center floor plate is rotated by the drive mechanism. When the center floor plate is rotated, the lower surface of the side floor plate on one side of the center floor plate is brought into contact with a roller to bend the side floor plate upward according to the direction of rotation. Therefore, by rotating the center floorboard with one drive mechanism, it is possible to change the patient's sleeping position and bend the side floorboards to prevent the patient from slipping off the center floorboard. Therefore, the configuration can be simplified compared to the case where the center floor plate and the side floor plates are driven by separate drive mechanisms, and cost reduction and ease of assembly can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with Fig. 1 being a sectional view, Fig. 2 being a plan view, Fig. 3 being a side view of the mounting structure for the central floor plate, Fig. 4 being a plan view of the drive mechanism, and Fig. 5 being a plan view.
The figure is a side view of the side floor plate supported by rollers, and FIG. 6 is a cross-sectional view of the connecting portion between the center floor plate and the side floor plate. DESCRIPTION OF SYMBOLS 1... Bed main body, 5... Center floor plate, 6... Side floor plate, 8... First support shaft, 17... Roller, 22
... Drive mechanism, 25... Drive source.

Claims (1)

[Scope of utility model registration request] The bed body, a central floor plate rotatably provided via a support shaft at the center of the bed body in the width direction, and one end side in the width direction connected to both sides of the central floor plate in a state that each rotates only in the upward direction. a pair of side floor plates, a drive mechanism that rotates the central floor plate via the support shaft, and a drive mechanism that rotates the center floor plate on the bed body while being in contact with the lower surface of the other end in the width direction of each of the side floor plates. and a roller that is provided and contacts the lower surface of one of the side floor plates located at one end in the width direction of the lowering of the center floor plate to bend the side floor plate in the upward direction when the center floor plate is rotated. A bed device characterized by: