JPH119389A - Bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed with which a reclining means and a lift means can be singly driven by one driving source. SOLUTION: When a motor 50 is rotated forward, a slider 54 is moved by the functions of a ball screw 52 and a female screw part 58. A reclining pin 84 is pushed by a groove wall 82A of a reclining groove 82, a reclining arm 44 is turned, and a back plate 20 is pushed up by a roller 92 and raised. A lift pin 72 is just guided along with a 2nd escape groove 70 and a lift arm 46 is not turned. When the motor 50 is rotated backward, the lift pin 72 is guided from the lower part of the lift groove 68 to the upper part. The lift arm 46 is turned, and a 1st foot plate 26 is pushed up by the roller 80 and moved up. While being interlocked with this operation, a 2nd foot plate 28 is moved up as well and the calves and the femurs are moved up through a mattress.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed which can be used by a healthy person and can be used for caring for a sick or disabled person.

[0002]

2. Description of the Related Art As shown in FIG.
Reclining means for raising and lowering a back plate 124 supporting the back of the mattress 122 in order to assist the sick person in getting up, and a foot plate 126 supporting legs of the mattress 122 in order to prevent floor rubbing and improve blood circulation. Lifting means for raising and lowering is provided.

[0003] These reclining means and lifting means are driven by independent driving sources (motors and the like), respectively, thereby increasing the production cost of the bed.

[0004] For this reason, a bed has been proposed in which the reclining means and the lifting means are driven by one driving source. However, when the back plate 124 is erected, the foot plate 126 rises, and When the plate 124 is tilted, the foot plate 126 moves in an interlocking manner so that the back plate 124 and the foot plate 126 cannot be driven independently.

[0005]

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a bed in which the reclining means and the lifting means can be driven independently by one driving source.

[0006]

According to the first aspect of the present invention, a base plate is fixed to a frame-shaped mat frame. A slider is supported on the base plate, and is reciprocated in the longitudinal direction of the mat frame by one driving means.

According to the position to which the slider moves,
For example, at one movement position, the reclining means raises and lowers the back plate supporting the upper body from the buttocks, and at another movement position, the lift means raises and lowers the foot plate supporting the lower body from the buttocks.

As described above, by adopting a mechanism for reciprocating the slider in the longitudinal direction of the mat frame, a single drive source for driving the reclining means and the lift means can be provided, and each of them can be independently driven. It can be driven.

According to the second aspect of the present invention, when the ball screw is turned in the normal rotation direction or the reverse rotation direction by the driving means, the slider reciprocates along the ball screw by the function of the female screw portion screwed with the ball screw.

Side plates are provided upright on both sides of the female screw portion. Reclining grooves are formed in the side plates on the back plate side, and lift grooves are formed on the foot plate side.

On the other hand, the back plate is supported by the hinge means so as to be able to move up and down, and the rotation axis of the reclining arm that rotates and raises and lowers the back plate is supported by the base plate. At the end of the reclining arm, a reclining pin is provided so as to enter the reclining groove.

That is, the slider moves in one direction,
When the reclining pin is pushed against the reclining groove wall, the reclining arm rotates around the rotation axis to erect the back plate, and when the slider moves in the other direction, the reclining pin moves the reclining groove groove wall. , The reclining arm rotates about the rotation axis and the back plate falls.

Further, the foot plate is supported by a connecting means so as to be able to move up and down, and a rotation shaft of a lift arm which rotates to move the foot plate up and down is supported by the base plate. A lift pin is provided at an end of the lift arm, and enters the lift groove.

That is, the slider moves in the other direction,
When the reclining pin is not in contact with the groove wall of the reclining groove, the lift pin is guided by the lift groove, the lift arm rotates around the rotation axis, pushes up the foot plate, and when the slider moves in one direction Then, the lift pins are guided in the lift grooves, and the lift arm rotates about the rotation axis to lower the foot plate.

According to the third aspect of the present invention, the operating pin protrudes from the side plate of the slider. When the slider moves in the other direction and the reclining groove is separated from the reclining pin by a predetermined distance, the link means provided at the end of the reclining arm is pushed by the operating pin to rotate the reclining arm.

Thus, the back plate is pushed up by the reclining arm and stands up. That is, by providing the operating pin and the link means, it is possible to add an operation mode in which the back plate is also erected when the foot plate is raised.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, a bed 10 according to the present embodiment has a rectangular mat frame 12 installed on a floor. A base plate 14 is stretched across the center of the mat frame 12 in the width direction, and the base plate 14 is located on the buttocks H1 of the human H.

A hinge member 16 is fixed to the back surface of the base plate 14. The wall plate 1 of the hinge member 16
The 8 side is rotatably connected by a shaft 24 to a connecting member 22 fixed to the base side of the back plate 20. Thereby, the back plate 2 located on the back H4 of the person H
Numeral 0 is free to rise and fall with respect to the base plate 14, and is supported by the mat frame 12 in a state of being horizontally laid down.

On the other hand, on the opposite side of the wall plate 18 of the base plate 14, a first foot plate 26 located on the thigh H2 of the person H and a second foot plate 28 located on the calf H3 are provided on the mat frame 12. Supported.

A connecting member 30 is fixed to the back surface of the first foot plate 26. One end of the connecting member 30 is rotatably connected to the hinge member 16 by a shaft 32, and the other end of the connecting member 30 is connected to a connecting member 34 fixed to the back surface of the second foot plate 28. At 36, it is rotatably connected.

Further, a connecting member 38 is fixed to an end of the second foot plate 28. This connecting member 38
Is rotatably connected by a shaft 42 to a free end of a support arm 40 whose base end is rotatably supported by the mat frame 12.

That is, in a state where a reclining arm 44 described later does not push up the back plate 20 and a lift arm 46 does not push up the first foot plate 26, as shown in FIG. , And the second foot plate 28 are supported by the mat frame 12 and horizontally support the mattress 48. When the reclining arm 44 pushes up the back plate 20, the back plate 20 stands up about the shaft 24 as shown in FIG.

Further, when the lift arm 46 pushes up the first foot plate 26, as shown in FIG.
, The first foot plate 26 is raised, the connecting member 34 connected by the connecting member 30 and the pin 36 is pulled up, and the second foot plate 28 is simultaneously raised.
At this time, the support arm 40 rotates counterclockwise to slide the second foot plate 28 toward the first foot plate 26. Thus, the first foot plate 2
6 and the second foot plate 28 move up in conjunction with each other, and the blood in the legs flows to the head, thereby improving blood circulation.

If the back plate 20 is raised while maintaining the state shown in FIG. 5, the mattress 48 is bent in a wavy shape as a whole as shown in FIG. The leg side of the mattress 48 is fixed to the second foot plate 28 by a stopper (not shown), and the amount of expansion and contraction due to bending is absorbed by the head side.

On the other hand, as shown in FIGS. 2, 3, and 7, a motor 50 is mounted on the back surface of the base plate 14. A ball screw 5 extending in the longitudinal direction of the mat frame 12 is provided on a rotation axis of the motor 50.
2 are connected. The ball screw 52 is screwed into a female screw portion 58 provided on a bottom plate 56 of the slider 54. Thus, when the motor 50 is rotated forward, the slider 54 moves to the back plate 20 side, and when the motor 50 is rotated reversely, the slider 5 is moved.
4 moves to the first foot plate 26 side.

Further, side plates 60 are provided at both ends of the bottom plate 56.
Is erected. The side plate 60 has a guide groove 62 extending in the longitudinal direction. Guide pins 64 provided on the base plate 14 are inserted into the guide grooves 62. The guide pin 64 allows the slider 5
4 is supported and moves in the longitudinal direction of the mat frame 12 without swinging left and right.

On the other hand, on the lower side of the guide groove 62, a first clearance groove 66 is formed in parallel with the guide groove 62, and a lift groove 68 is connected to the first clearance groove 66 obliquely downward. A second clearance groove 70 extends toward the first foot plate 26 in parallel with the first clearance groove 66.

A lift pin 72 provided at the end of the U-shaped lift arm 46 is inserted so as to move along the first clearance groove 66, the lift groove 68, and the second clearance groove 70. .

The rotating shaft 7 extends from the bent portion of the lift arm 46.
4 are protruded. The rotation shaft 74 is rotatably supported by a bearing 76 provided on the back surface of the base plate 14. The other end of the lift arm 46 is connected to a shaft 7 extending in the width direction of the first foot plate 26.
8 at both ends of the shaft 78.
A roller 80 is mounted.

When the lift arm 46 rotates, the roller 80 pushes up the back surface of the first foot plate 26 and raises the second foot plate 28 connected to the first foot plate 26 together. .

On the other hand, the side plate 60 of the slider 54 has a reclining groove 82 with the back plate 20 side opened.
Are formed. A tapered portion is formed on the opening side of the reclining groove 82 so as to widen the frontage, so that a reclining pin 84 protruding from the end of the reclining arm 44 can easily enter and exit.

At the bent portion of the reclining arm 44,
A rotation shaft 86 is provided to protrude. The rotation shaft 86 is rotatably supported by a bearing 88 provided on the back surface of the base plate 14. The reclining arm 44
Are connected to each other by shafts 90 extending in the width direction of the back plate 20, and rollers 92 are attached to both ends of the shaft 90.

When the reclining arm 44 rotates, the roller 92 pushes up the back surface of the back plate 20 and raises it.

One end of a long link member 94 is rotatably connected to an end of the reclining arm 44. The other end of the long link member 94 is rotatably connected to one end of a short link member 98 whose center is pivotally supported by the base plate 14 with a pin 96. When the other end of the short link member 98 is pushed by the operating pin 100 protruding from the side plate 60 and rotates around the pin 96, the turning power is transmitted to the reclining arm 44 by the long link member 94. It has become so.

Next, the movement of the bed according to this embodiment will be described. As shown in FIG. 3, when the person H is lying on his back, the reclining pin 84 of the reclining arm 44 is located on the groove wall of the reclining groove 82.
The roller 92 is located below the upper end of the mat frame 12. For this reason, the back plate 20 is supported by the mat frame 12 and is horizontal.

The lift pin 72 of the lift arm 46
Is located below the lift groove 68, and the roller 80 is located below the upper end of the mat frame 12.
For this reason, the first foot plate 26 and the second foot plate 28 are supported by the mat frame 12 and are horizontal.

When the motor 50 is rotated forward by operating a controller (not shown), the ball screw 5
The slider 54 moves toward the wall plate 18 by the function of the 2 and the female screw portion 58.

For this reason, as shown in FIG. 4, the reclining pin 84 of the reclining arm 44 is pushed by the groove wall 82A of the reclining groove 82 (see FIG. 2). Rotate clockwise. Thus, the back plate 20 is pushed up by the rollers 92 and stands up.

At this time, the lift pin 72 of the lift arm 46 is only guided along the second clearance groove 70, and the lift arm 46 maintains the state of FIG.
The movement of the slider 54 is controlled by the limit switch 10.
When the stopper 2 hits the stopper 104, the operation is stopped, and accordingly, the erecting operation of the back plate 20 is stopped.

Next, when the controller 50 is operated to reverse the motor 50, the slider 54 moves in a direction away from the wall plate 18 by the functions of the ball screw 52 and the female screw portion 58.

Therefore, as shown in FIG. 5, the reclining pin 84 separates from the groove wall 82A of the reclining groove 82, and the reclining arm 44 rotates counterclockwise about the rotation shaft 86. As a result, the rollers 92 are retracted into the mat frame 12, and the back plate 20 is supported on the mat frame 12.

Further, when the motor 50 is rotated in the reverse direction, the lift pins 72 of the lift arm 46 are guided from the lower part of the lift groove 68 to the upper part. Accordingly, the lift arm 46
Rotates counterclockwise about the rotation shaft 74, and the first foot plate 26 is pushed up by the rollers 80 and rises.
In conjunction with this, the second foot plate 28 also rises,
Lift the calf H3 and the thigh H2 through the mattress 48.

Further, if the motor 50 continues to be rotated in the reverse direction, the lift pin 72 is guided to the first clearance groove 66 as shown in FIG. 6, so that the lift arm 46 rotates counterclockwise. Maintained, first foot plate 2
6 remains pushed up by the roller 80.

The operating pin 100 is connected to the short link member 98.
Is rotated about the pin 96, the reclining arm 44 rotates clockwise via the long link member 94. Thus, the back plate 20 is pushed up by the rollers 92 and stands up.

The movement of the slider 54 is stopped when the limit switch 108 attached to the mat frame 12 hits the slider 54.

In this embodiment, the long link member 94 and the short link member 98 are provided only on one of the reclining arms 44 in order to reduce the number of parts. However, when priority is given to the balance during operation, they are provided on both sides. Is preferred.

Further, by adopting a structure in which the back plate 20 and the first foot plate 26 are pushed up by a roller without being connected to a roller, the back plate 20 or the first foot plate 2 can be irrespective of the stop position of the roller.
6 can be lifted, which is excellent in terms of safety.

[0048]

According to the present invention, the reclining means and the lift means can be independently driven by one drive source. For this reason, the manufacturing cost of the bed can be reduced.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing the movement of a bed according to the present embodiment.

FIG. 2 is an exploded perspective view of the bed according to the embodiment.

FIG. 3 is a side view showing a state in which the mat of the bed according to the embodiment is in a horizontal position.

FIG. 4 is a side view showing a state in which the back of the bed mat according to the present embodiment is in a standing position.

FIG. 5 is a side view showing a state where the leg of the mat of the bed according to the present embodiment is in a raised position.

FIG. 6 is a side view showing a state in which the legs of the mat of the bed according to the present embodiment are in the raised position and the back of the mat is in the upright position.

FIG. 7 is a partially broken bottom view of the bed according to the embodiment.

FIG. 8 is a conceptual diagram illustrating a conventional bed.

[Explanation of symbols]

 12 mat frame 14 base plate 16 hinge member (hinge means) 20 back plate 24 shaft (hinge means) 26 first foot plate 30 connecting member (connecting means) 44 reclining arm (reclining means) 46 lift arm (lift means) 50 motor ( Driving means) 52 Ball screw (driving means) 54 Slider 58 Female thread part (driving means) 60 Side plate (slider) 68 Lift groove (slider) 72 Lift pin (lift means) 82 Reclining groove (slider) 84 Reclining pin (reclining means) 94 Long link material (link means) 98 Short link material (link means) 100 Working pin

Claims (3)

[Claims] A frame-shaped mat frame; a base plate fixed to the mat frame; a slider supported by the base plate and movable in a longitudinal direction of the mat frame; a driving unit for reciprocating the slider; Reclining means for raising and lowering a back plate supporting the upper body from the buttocks according to the moving position of the slider, and lifting means for raising and lowering a foot plate supporting the lower body from the buttocks according to the moving position of the slider. A bed characterized by the following. 2. A female screw part in which the slider is screwed with a ball screw turned by the driving means,
Side plates erected on both sides of the female screw portion, and a reclining groove formed on the back plate side of the side plate,
A lift groove formed on the foot plate side of the side plate, wherein the reclining means is a hinge means for supporting the back plate so as to be able to move up and down, and a rotating shaft is supported by the base plate to rotate and rotate. A reclining arm that raises and lowers a back plate, and a reclining pin that is provided at an end of the reclining arm and that is pressed by a groove wall of the reclining groove and that rotates the reclining arm. Connecting means for supporting up and down freely, a lift arm supported by a rotating shaft on the base plate to rotate and raise and lower the foot plate; and a reclining pin provided at an end of the lift arm, wherein the reclining pin is a groove of the reclining groove. Guided to the lift groove when not in contact with the wall Bed according to claim 1, the lift pin pivoting the lift arm, in characterized in that it is configured Re. 3. An operation pin protrudes from a side plate of the slider. When the slider moves until the reclining groove is separated from the reclining pin by a predetermined distance, the operation pin is pushed by the operation pin to move the back plate upright. The bed according to claim 2, wherein link means for rotating the reclining arm is provided at an end of the reclining arm.