JPH1119135A - Bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed capable of reclining a back plate without changing the horizontal position of the head. SOLUTION: When a motor 72 is driven forwards, by the functions of a female screw part 66 and a ball screw 68, a driving plate 58 is moved to the side of legs and a 1st rotary table 52 is turned in clockwise direction integrally with a 2nd rotary table 76. When a rod 44 is pulled through a turn link 50 and a driving shaft 40 is pulled to the side of legs, a reclining arm 32 is turned and a back plate 14 rises/falls. At such a time, the top end part of an offset arm slides a slide plate 16 to the side of the head just as pushing an offset lever 80 away. Therefore, the slide plate 16 is moved to the side of the head corresponding to the rising angle of the back plate 14, and the head of a human being on a mattress placed on a rib plate 86 is perpendicularly moved up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention is used by healthy persons,
Alternatively, the present invention relates to a bed used for nursing a sick or sick person.

[0002]

2. Description of the Related Art As shown in FIG. 11, a bed 150 is provided with a reclining mechanism for raising and lowering a back plate 154 supporting the back of a mattress 152 in order to assist a sick person in getting up. And FIG.
As shown in FIG. 2 and FIG. 13, the head H1 of the person H moves away from the wall plate 157 as the back plate 154 stands.

[0003] This is not surprising as the movement of the back plate 154. For example, when a bed table 156 is set on the bed 150 and a meal is taken, when the back plate 154 is raised, the head is moved up. Because the position of the section H1 changes, the body is squeezed or the bed table 1
You have to move or choose 56, which is not an easy task for the sick.

[0004] In addition, when turning over from the back to the side, this is an operation that does not cause any trouble for a healthy person, but may be a heavy burden for a sick person. However, no bed has been designed from such a viewpoint.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described circumstances, and has as its object to provide a bed that can recline a back plate and support a turning operation while maintaining a horizontal position of a head. And

[0006]

According to the first aspect of the present invention, a back plate for supporting an upper body is provided on a main body frame. When the reclining means raises and lowers the back plate, the offset means functions to slide the back plate being raised and lowered.

As a result, the free end of the back plate moves in the vertical direction while ascending without drawing a locus of an arc. For this reason, the human head supported by the back plate does not move in the horizontal direction but rises in the vertical direction.

[0008] Therefore, even when the back plate is reclined, for example, when using a bed table,
You can eat without straining your body.

According to the second aspect of the present invention, a slide plate for supporting the back plate so as to be able to move up and down is slidably attached to the main body frame. A rotating shaft of a reclining arm is supported by the slide plate, and the reclining arm rotates to raise and lower the back plate.

[0010] A rotary table is provided on the slide plate. The rotary table and the reclining arm are connected by link means.
The turning force of the turntable is converted into a turning force for turning the reclining arm.

An offset arm extends from the rotary table in the radial direction. This offset arm is connected to the main body frame by an offset lever. That is, when the offset arm turns together with the rotary table, the offset plate slides the slide plate in accordance with the elevation angle of the back plate in such a manner that the offset arm pushes or pulls the offset lever.

The amount of movement of the slide plate depends on the amount of rotation of the offset arm. If a predetermined relationship is provided between the movement amount of the slide plate and the undulation angle of the back plate, the free end of the undulating back plate can be raised in the vertical direction.

According to the third aspect of the present invention, the plate is provided on the frame-shaped main body frame. A plurality of rib plates are laid on the plate, and a mattress is placed on the rib plate.

The rib plates are connected to each other by a connecting member so that they can be tilted in the longitudinal direction. Then, when the rib plate is swung in the longitudinal direction by the twisting means provided on the plate, the rib plate connected to the connecting member starts to tilt sequentially. When viewed as a whole, it looks like a twist is applied to the entire rib plate. And the human lying on the mattress,
It is pushed up in the lateral direction of the body frame.

In other words, since the user is woken up in such a manner that the back is pushed obliquely in the lateral direction, the user can turn over without any difficulty.

According to the fourth aspect of the present invention, at least one of the rib plates is supported by a rotary bearing fixed to the plate and can swing in the longitudinal direction. In addition, a drive plate that reciprocates in the longitudinal direction of the rib plate is provided, and the drive plate and the rib plate are connected by a link member.

Therefore, when the driving plate reciprocates,
By the link member, the reciprocating motion is changed into a swinging motion about the rotation bearing of the rib plate. by this,
The rib plates connected by the connecting member swing sequentially and are twisted as a whole.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1, 3, and 6, a bed 10 according to the present embodiment has a rectangular main body frame 12 installed on a floor surface. For convenience of description below, the head side refers to the side of the main body frame 12 where the human head is located, and the leg side refers to the side where the human legs are located.

Between the side plates 12A of the main body frame 12,
A back plate 14 is provided on the head side, and a slide plate 16 is provided on the leg side. Slide plate 1
Rollers 18 are attached to both ends in the width direction of the roller 6. The roller 18 is slidably supported by a rail 20 extending in the longitudinal direction inside the side plate 12A.

The width of the back plate 14 is smaller than the distance between the side plates 12A, and is located in the main body frame 12 when it falls down.

As shown in FIG. 2, a hinge bracket 22 is mounted on the head side of the slide plate 16 and a hinge bracket 24 is mounted on the leg side of the back plate 14. I have. Thereby, the back plate 14 can be raised and lowered with respect to the slide plate 16.

Further, a shaft plate 28 protrudes from the center of the end of the head of the slide plate 16 toward the back surface.
A shaft 30 is bridged between the shaft plates 28, and a long triangular reclining arm 32 having the shaft 30 as a rotation axis is connected.

The free end side of the reclining arm 32 is
The follower arm 34 is rotatably supported by the shaft 33. The tip of the following arm 34 is rotatably connected to a mounting bracket 36 fixed to the back surface of the back plate 14.

With such a configuration, the follower arm 34 is rotated in accordance with the angle of the back plate 14
The turning power of the reclining arm 32 is converted into an undulating operation of the back plate 14.

A notch 38 is formed at the joint between the slide plate 16 and the back plate 14 so as not to interfere with the movement of the reclining arm 32, as shown in FIG.

On the other hand, a drive shaft 40 is provided at the point where the reclining arm 32 generates a rotational moment about the shaft 30. A universal joint 42 is attached to the drive shaft 40. The universal joint 42 includes a rod 4
4 are connected at one end.

A joint member 46 is fixed to the other end of the rod 44. This joint member 46
Is rotatable up and down by a pin 48, and the intermediate link 5
Connected to 1. The other end of the intermediate link 51 is a pin 53
To the rotating link 50. The other end of the rotation link 50 is rotatably connected to an outer peripheral portion of the first turntable 52 supported by the slide plate 16 by a pin 54.

With this configuration, when the first rotary table 52 rotates, the pin 54 actually moves on the circumference, but the rotary link 50 is pushed and pulled by the movement of the slide plate 16 along the longitudinal direction. I do. The rod 44 is also pushed and pulled by the rotation link 50 via the intermediate link 51, and the reclining arm 32 rotates, and the back plate 14 is raised and lowered. The movement of the pin 54 on the circumference is determined by the universal joint 42 and the intermediate link 5.
By 1, the movement is changed to a linear movement, and the vertical movement of the drive shaft 40 is absorbed by the joint portion of the universal joint 42 and the pin 48.

On the other hand, the first rotary table 52 has a pin 5
4, one end of the swing link 56 is rotatably connected. The other end of the swing link 56 is swingably connected to a drive plate 58 by a pin 60. Also,
A guide pin 62 projects from the other end of the swing link 56. The guide pin 62 is inserted into an arc-shaped long hole 64 formed in the drive plate 58, and the swing link 56
Limit the swing angle.

On the other hand, a female screw portion 66 is formed at an end of the drive plate 58. The female screw portion 66 is screwed with a ball screw 68 arranged along the longitudinal direction of the slide plate 16. The ball screw 68 is fixed to a rotating shaft of a motor 72 fixed to the slide plate 16 via a bracket 70.

When the ball screw 68 turns, the drive plate 58 moves linearly along the longitudinal direction of the slide plate 16, and rotates the first turntable 52 via the swing link 56. At this time, the pin 54 moves on the circumference, but the swing link 56 follows and swings, so that the linear movement of the drive plate 58 is not hindered.

In the present embodiment, the first rotary table 52 is rotated by the drive plate 58 which moves linearly in order to reduce the space above and below the main body frame 12, but the rotation axis of the motor is changed to the first axis. The first rotary table 52 may be directly rotated by being fixed coaxially with the shaft 74 of the rotary table 52, and the driving method is not specified.

On the other hand, the second rotary table 76 is connected to the shaft 74 of the first rotary table 52 so as to rotate integrally with the first rotary table 52 with the slide plate 16 interposed therebetween. From the second turntable 76,
An offset arm 78 extends in the radial direction.

One end of an offset lever 80 is rotatably connected to a tip end of the offset arm 78 by a pin 82. The other end of the offset lever 80 is rotatably supported by a base plate 84 disposed on the bottom of the main frame 12.

That is, when the offset arm 78 turns together with the second turntable 76, as shown in FIG.
The slide plate 16 is slid together with the back plate 14 in such a manner that the offset arm 78 pushes or pulls the offset lever 80 away.

The moving amount of the slide plate 16 is as follows.
The length can be adjusted by changing the length of the offset arm 78, and as shown in FIGS. 4 and 5, the free end of the back plate 14 that rises and falls is set to rise and fall in the vertical direction.

As shown in FIG. 8, a plurality of rib plates 86 are supported on the back plate 14.
Both ends of the rib plate 86 are connected by a flexible wire 88 or the like as a connecting member, and function as a support for supporting the back of the mattress 90.

The leg side of the rib plate 86 is connected to the hinge bracket 2 mounted on the back plate 14.
4, and the entire rib plate 86 reclines with respect to the fixed plate 92.

Further, one side from the head side of the rib plate 86
A support plate 94 fixed to the back surface of the back plate 14 is located between the first and second sheets. The shaft pin 96 supported by the support plate 94 is inserted into a shaft hole formed on the side surface of the first rib plate 86 and a shaft hole formed on the side surface of the second rib plate 86. The two rib plates 86 can swing in the longitudinal direction about the shaft pin 96.

On the back surface of the back plate 14, a long support block 98 is fixed so as to extend along the longitudinal direction of the rib plate 86. A pair of shaft plates 100 project from both ends of the support block 98. The back plate 14 located above the shaft plate 100 is partially open, and the rocker 104
Are pivotally supported by pins 106.

The oscillating body 104 includes a pair of shaft plates 108 projecting in the longitudinal direction of the support block 98, and a plate 110 extending in a direction perpendicular to the support block 98. The lower end of the link member 114 is connected to the shaft plate 108 with a pin 112. A fixing pin 116 penetrates the upper end of the link member 114, and the fixing pin 1
16 are inserted and fixed into a circular hole formed on the side surface of the first rib plate 86 and a circular hole formed on the side surface of the second rib plate 86.

That is, as shown in FIG.
4 swings clockwise around the pin 106, the left link member 114 is pulled up, and the right link member 114 is lifted.
Is pushed up, and the first and second rib plates 86 swing rightward about the shaft pin 96 and tilt. Then, the third and subsequent rib plates 86 are sequentially swung via the wires 88, and a clockwise twist is applied to the entire rib plate 86. On the other hand, as shown in FIG. 10, when the rocking body 104 is rocked counterclockwise, a clockwise twist is applied to the entire rib plate 86.

On the other hand, the other end of the plate 110 is connected to the drive plate 120 via a pin 118 (see FIG. 9), and the oscillating body 104 is a parallel link. The drive plate 120 is formed with a female screw portion 126. A ball screw 128 disposed parallel to the drive plate 120 is screwed into the female screw portion 126. The ball screw 128 is fixed to a rotating shaft of a motor 124 fixed to the back plate 14 via a bracket 122.

Thus, when the motor 124 is rotated forward and backward, the drive plate 120 reciprocates along the ball screw 128 to swing the rocking body 104.

Next, the operation of the bed according to this embodiment will be described. As shown in FIGS. 3 and 6, when the back plate 14 is in a horizontal state, the leg side of the slide plate 16 is substantially flush with the end plate 130 of the main body frame 12, and the rib plate 86 Are flush with the fixing plate 92 and are horizontally supported by the body frame 12.

Further, as shown in FIG.
The taper surface 13 is provided on the upper side (head side) of the second side plate 12A.
Are formed so that the torsional movement can be performed even when the rib plate 86 is in the horizontal state.

Here, when a motor (not shown) is operated to rotate the motor 72 forward, as shown in FIG.
By the functions of the female screw portion 66 and the ball screw 68, the drive plate 58 moves to the leg side, and the first turntable 52 rotates clockwise.

As a result, the rod 44 is pulled through the rotation link 50 and pulls the drive shaft 40 toward the leg. For this reason, the reclining arm 32 rotates about the shaft 30. The turning operation of the reclining arm 32 is converted by the following arm 34 into an undulating operation of the back plate 14.

At this time, the second rotary table 76 rotates clockwise together with the offset arm 78 integrally with the first rotary table 52. One end of an offset lever 80 rotatably supported by a base end of the offset arm 78 and a base plate 84 is connected by a pin 82.

Accordingly, the slide plate 16 is slid toward the head in such a manner that the offset arm 78 pushes the offset lever 80 apart. Therefore, the rib plate 86 supported by the back plate 14 moves toward the head side as the rising angle of the rib plate 86 increases, and as a result, as shown in FIG.
The person's head on the mattress 90 placed on 6 rises vertically (the distance L between the head H1 and the wall plate 157 is constant at any undulation angle).

When tilting the back plate 14,
When the motor 72 is reversed, the slide plate 16 slides toward the leg according to the tilt angle, so that the head of the human descends in the vertical direction.

As shown in FIGS. 8 and 9, when the controller 124 is operated to rotate the motor 124 in the normal direction, the drive plate 120 moves to the left by the functions of the female screw portion 126 and the ball screw 128, and swings. The moving body 104 swings, the left link member 114 is pulled up, and the right link member 114 is pushed up.

As a result, the first and second rib plates 86 swing rightward about the shaft pin 96 and tilt, and the third and subsequent rib plates 86 swing sequentially via the wires 88. Thus, a clockwise twist is applied to the entire rib plate 86.

For this reason, the mattress 90 placed on the rib plate 86 is similarly twisted, and the person lying on the mattress is pushed obliquely on his back,
You can turn over without difficulty.

In this embodiment, the rib plate 86 provided with the twist mechanism is disposed on the back plate 14, but the fixing plate supporting the lower body from the buttocks may be replaced with a rib plate provided with the twist mechanism. Thereby, the right and left distortion of the human body centering on the spine can be corrected.

[0056]

According to the present invention, the back plate can be reclined while maintaining the horizontal position of the head. Further, by turning the rib plate, the turning operation can be assisted.

[Brief description of the drawings]

FIG. 1 is an overall schematic view of a bed according to an embodiment.

FIG. 2 is an exploded perspective view showing a bed offset mechanism according to the embodiment.

FIG. 3 is a side sectional view showing a horizontal state of the bed according to the embodiment.

FIG. 4 is a side sectional view showing a reclining state of the bed according to the embodiment.

FIG. 5 is a side sectional view showing a reclining state of the bed according to the embodiment.

FIG. 6 is a plan view showing the bed offset mechanism according to the embodiment.

FIG. 7 is a plan view showing the bed offset mechanism according to the present embodiment.

FIG. 8 is a perspective view showing a twist mechanism of the bed according to the present embodiment.

FIG. 9 is a perspective view showing movement of the twist mechanism of the bed according to the present embodiment.

FIG. 10 is a perspective view showing the movement of the twist mechanism of the bed according to the embodiment.

FIG. 11 is a conceptual diagram illustrating a conventional bed.

FIG. 12 is a side view showing a horizontal state of a conventional bed.

FIG. 13 is a side view showing a reclining state of a conventional bed.

[Explanation of symbols]

 12 body frame, 14 back plate (plate) 16 slide plate (reclining means) 32 reclining arm (reclining means) 44 rod (linking means) 52 first rotary table (reclining means) 56 swing link (linking means) 58 drive Plate (link means) 72 Second rotary table (offset means) 78 Offset arm (offset means) 80 Offset lever (offset means) 86 Rib plate 88 Wire (connecting member) 94 Bearing plate (rotary bearing) 104 Oscillator (link member) 114 link material (link member) 120 drive plate

Claims (4)

[Claims] 1. A frame-shaped main body frame; reclining means for raising and lowering a back plate disposed on the main body frame and supporting an upper body; A bed comprising: offset means for moving in a direction. 2. A slide plate, wherein said reclining means is slidably mounted on said main body frame, said slide plate supports said back plate so as to be able to undulate, and a rotation shaft is supported by said slide plate. A reclining arm for raising and lowering the back plate;
A rotating table provided on the slide plate, and a link unit for connecting the rotating table and the reclining arm, and converting a rotating force of the rotating table into a rotating force of the reclining arm, wherein the offset unit includes: An offset arm extending radially from the rotary table, and an offset lever connecting the offset arm and the main body frame and using the amount of rotation of the offset arm as the amount of movement of the slide plate, The bed of claim 1, wherein 3. A frame-shaped main body frame, a plate disposed on the main body frame, a plurality of rib plates laid on the plate, and a mattress placed thereon, and the rib plates are connected to each other. A bed comprising: a connecting member capable of tilting each other in a longitudinal direction; and twisting means disposed on the plate to swing the rib plate in the longitudinal direction. 4. A rotating bearing fixed to the plate and supporting at least one of the rib plates so as to swing in a longitudinal direction, and a drive plate reciprocating in the longitudinal direction of the rib plate. 4. A link member that connects the drive plate and the rib plate and that changes the movement of the drive plate into a swinging motion of the rib plate about the rotary bearing. Bed.