JP3015797B1 - bed - Google Patents

Abstract

To reduce the number of parts by making a head and legs undulating and using a single electric motor while maintaining a shape suitable for a human lying position. SOLUTION: A front upper surface portion 2a and a rear upper surface portion 2b constituting a bed upper surface portion are a central horizontal bottom surface portion 3, a front upward inclined portion 4 continuously provided before and after the central horizontal bottom surface portion 3 or a rear. It is formed of an upwardly inclined part 5 and a front horizontal part 6 connected to the front upwardly inclined part 4 or a rear horizontal part 7 connected to the rear upwardly inclined part 5. In the case of electric power, a mechanism for linking the examples of the front upper surface and the rear surface is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bed.

[0002]

2. Description of the Related Art A conventional bed has a horizontal top surface, a plurality of electric motors installed on a head and a leg, respectively, and the electric motors are operated respectively, so that the head and the head are separated. Some had raised and lowered legs.

[0003]

However, in the above bed, the shape of the upper surface is horizontal, and the head and the legs simply rise and fall from there. Therefore, the bed can be raised and lowered while keeping the body posture relaxed. could not. Further, since a plurality of electric motors are provided, the cost is high, the number of parts is large, and the assembly structure is complicated.

[0004] In view of the above, the present invention enables the head and legs to be undulated while maintaining a shape suitable for a person lying down, and furthermore, by using a single electric motor, the number of parts can be reduced, and assembly can be achieved. The aim is to provide an easy, cheap bed.

[0005]

In order to achieve the above-mentioned object, a bed according to the present invention comprises a central horizontal bottom portion, and a front upward slope continuously provided before and after the central horizontal bottom portion. The upper surface of the bed is formed by a rear / upward inclined section, a front horizontal section connected to the front upward inclined section, and a rear horizontal section connected to the rear upward inclined section. It is.

Also, a central horizontal bottom portion, a front upward inclined portion and a rear upward inclined portion respectively connected before and after the central horizontal bottom portion, and a continuous upward inclined portion are provided. A front horizontal portion and a rear horizontal portion connected to the rear upwardly inclined portion form a bed upper surface portion, and further, a base portion on which the bed upper surface portion is placed is provided on the bed upper surface portion. Correspondingly, it is configured to have a shape having a central horizontal bottom surface portion, a front upward inclined portion, a rear upward inclined portion, a front horizontal portion, and a rear horizontal portion.

Further, the front horizontal portion and the rear horizontal portion of the upper surface of the bed are set at substantially the same height, and the vertical step size between the front horizontal portion / rear horizontal portion and the central horizontal bottom portion is set. ,
It is set to 30mm or more and 100mm or less.

The bed upper surface is provided with a front swinging portion and a rear swinging portion at a front portion and a rear portion, respectively, and at the rear portion of the bed base portion, it is swingable about a horizontal axis in the left-right direction. A lifting frame is pivotally connected to the lifting frame, and the lifting frame is slidably contacted with a lower portion of the rear swinging portion, and the swinging motion of the lifting frame and the undulating operation of the rear swinging portion are formed in conjunction with each other. The hanging arm attached to the swinging part and the lifting frame are connected by a flexible interlocking member, and the drive mechanism disposed at the front of the bed base and the hanging arm are connected,
The drive mechanism is configured to interlock the up-and-down operation of the front swing unit and the rear swing unit.

The upper surface of the bed is divided into a front upper surface portion and a rear upper surface portion at an intermediate portion in the front-rear direction of the central horizontal bottom surface portion.
The front upper surface has a front swinging portion, the rear upper surface has a rear swinging portion, the bed base has a front foundation and a rear foundation, and the front foundation and the rear foundation have an inverted V. It is configured to be pivotally connected to each other so as to be freely foldable into a letter shape, and to have the front upper surface placed on the front foundation and the rear upper surface placed on the rear foundation.

[0010] Further, a sliding member is provided at a sliding contact portion of the push-up frame which is in sliding contact with a lower portion of the rear swinging portion.

[0011] Further, a front swinging portion is provided at the front of the upper surface portion of the bed, and further, a hanging arm attached to the front swinging portion, and a driving mechanism provided at a front portion of the bed base portion, And the drive mechanism causes the front swinging portion to move up and down.

The upper surface of the bed is divided into a front upper surface portion and a rear upper surface portion at an intermediate portion in the front-rear direction of the central horizontal bottom surface portion.
A front swinging portion is provided on the front upper surface portion, the bed base portion includes a front base portion and a rear base portion, and the front base portion and the rear base portion are pivotally connected to each other in an inverted V-shape so as to be freely movable. The front upper surface portion is placed on the base portion, and the rear upper surface portion 2 is placed on the rear foundation portion.

Further, the drive mechanism can be accommodated in a gap formed inside when the front base portion and the rear base portion are folded in an inverted V-shape.

In addition, an intermediate leg is provided at a front-rear position corresponding to a pivot portion between the front base portion and the rear base portion, and between a lower end edge of the intermediate leg and a front end edge of the front base portion or its vicinity, and A tension spring is connected between the lower end edge of the intermediate leg and the rear end edge of the rear base or the vicinity thereof.

Further, a manual operation unit is provided in the drive mechanism.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIG. 1 is a perspective view showing an embodiment of the present invention, showing an unfolded state.
The bed includes a bed base 1 and a bed upper surface 2 placed on the bed base 1. In the bed according to the present invention, the head side of the bed is defined as a front direction F, the leg side is defined as a rear direction B, and left and right are defined as left direction L and right direction R when viewed in plan.

The bed upper surface 2 has a central horizontal bottom 3
A front upward inclined portion 4 and a rear upward inclined portion 5 continuously provided before and after the central horizontal bottom surface portion 3, and a front horizontal portion 6 continuously provided with the front upward inclined portion 4, respectively. Backward upward slope 5
And a rear horizontal portion 7 continuously provided.

Further, as shown in FIG. 6, the front horizontal portion 6 and the rear horizontal portion 7 of the bed upper surface portion 2 are set at substantially the same height, and the front horizontal portion 6 and the rear horizontal portion 7 are The height difference H in the vertical direction from the center horizontal bottom part 3 should be 30 mm or more and 100 mm
Set as follows. Therefore, since the shape of the bed upper surface portion 2 conforms to the ergonomic shape of the lying human body,
On the bed top you can relax in a very comfortable position.

A gate-shaped front leg 38 is fixed to the front edge of the front foundation 1a. Wheels 18, 18 are attached to the lower ends of the front legs 38. A wheel 19 is attached to the center of the upper edge of the front leg 38. This wheel 19 (as will be described later)
When the front base 1a and the rear base 1b are folded in an inverted V-shape, they support half of the bed and facilitate movement of the bed in the folded state. (See Fig. 8)

At the rear of the side edge of the rear base 1b, a rear support 3
9 and 39 are pivotally mounted.
0 and 20 are attached to facilitate the movement of the bed.

FIG. 2 is a perspective view showing a standing state of the bed upper surface 2 by the frame from which the mat has been removed. The bed upper surface 2 is a middle part in the front-rear direction of the central horizontal bottom surface 3, and the front upper surface 2 a and the rear upper surface 2 a. At the same time, the center horizontal bottom portion 3 is also divided into a front center horizontal bottom portion 3a and a rear center horizontal bottom portion 3b at an intermediate portion in the front-rear direction. The front swing portion 8 and the front center horizontal bottom surface portion 3a are provided, and the rear top surface portion 2b is provided with the rear swing portion 9 and the rear center horizontal bottom surface portion 3b.

The front center horizontal bottom surface portion 3a includes a first bottom surface portion 31 and a second bottom surface portion 32 pivotally connected to the first bottom surface portion 31 at an intermediate portion in the front-rear direction. I have.

The front swinging portion 8 includes a front upward tilting portion 4, a front horizontal portion 6, and a second bottom surface portion 32, and is integrally swingable to a rearward downward tilting angle. Thus, it is pivotally connected to the first bottom surface portion 31.

The rear swinging portion 9 includes a rear upward tilting portion 5 and a rear horizontal portion 7, and is integrally formed with a rear center horizontal bottom surface so as to be able to rock to a predetermined forward downward tilting angle. It is pivotally connected to the part 3b.

Although not shown, the configuration of the front rocking section 8 and the rear rocking section 9 is not limited to this.
Is integrally formed with the front upwardly inclined portion 4 and the front horizontal portion 6 and is pivotally connected to the fixed front center horizontal bottom surface portion 3a, or the rear swing portion 9 is rearward. In some cases, the upwardly inclined portion 5, the rear horizontal portion 7, and the rear center horizontal bottom surface portion 3b are integrally formed and pivotally connected to the bed base portion 1 in a swingable manner. It is sufficient that the front swinging portion 8 and the rear swinging portion 9 are formed at the rear portion and the rear portion, respectively.

The bed base 1 has a front base 1a and a rear base 1b, and the front base 1a and the rear base 1b are pivotally connected to each other in an inverted V-shape (as shown in FIG. 8). 11, 11
The front upper surface 2a is placed on the front foundation 1a, and the rear upper surface 2b is placed on the rear foundation 1b.

More specifically, as shown in FIG. 2, a part or the whole of the first bottom part 31 is fixed to the bed front base part 1a, and a part or the whole of the rear center horizontal bottom part 3b. Is fixed to the base 1b after the bed.

Although not shown, the bed of the present invention may be a fixed bed that cannot be folded into an inverted V-shape, and the bed base 1 integrates the front base 1a and the rear base 1b, Alternatively, the bed upper surface portion 2 may be one in which the front upper surface portion 2a and the rear upper surface portion 2b are integrated.

A push-up frame 12 is pivotably connected to the rear of the bed base 1 so as to be swingable about a horizontal axis A in the left-right direction.
The lifting frame 12 is in sliding contact with the lower portion of the rear swinging portion 9, and is formed so that the swinging motion of the lifting frame 12 and the raising / lowering operation of the rear swinging portion 9 are interlocked.

Further, a hanging mechanism 21 attached to the front swinging section 8 and the lifting frame 12 are connected by a flexible interlocking member 10 and a driving mechanism disposed at the front of the bed base 1. 13 and the hanging arm 21 are connected, and by moving the drive mechanism 13, the up-and-down operation of the front swing unit 8 and the rear swing unit 9 is interlocked.

More specifically, as shown in FIG. 3 and FIG. 4, hanging arms 21, 21 are attached to the second bottom surface 32 of the front swinging portion 8, and are provided on the bed front base 1a. Drive mechanism 13
Is sandwiched between the hanging arms 21 and 21 and connected to each other. The operation of the drive mechanism 13 causes the front swinging portion 8 to move up and down.

A push-up frame 12 is pivotally connected to the bed base 1b so as to be swingable about a horizontal axis A in the left-right direction. A front pipe 15 and a rear pipe 16 which are symmetrically connected to each other, and a front pipe 15 and a rear pipe 16 which are arranged in front and rear of the left and right side pipes 14 and 14 such that the push-up frame 12 is substantially rectangular in plan view; It has.

The front pipe 15 is in sliding contact with protruding pipes 22 provided below the rear horizontal portion 7 of the rear upper portion 2b of the bed (as shown in FIGS. 6 and 7). The swing operation and the up-and-down operation of the rear swing unit 9 are formed so as to interlock with each other.

Further, the rear pipe 16 and the hanging arm 21 are connected by a flexible interlocking member 10 so that the front and rear oscillating parts 8 and the rear oscillating part 9 are interlocked. .
Therefore, by moving the drive mechanism 13, the front swinging unit 8 and the rear swinging unit 9 are operated to move up and down.

However, since the flexible interlocking member 10 is detachably connected to the hanging arm 21 and the lifting frame 12, the front swinging portion 8 can be selectively moved without raising or lowering the rear swinging portion 9. Only the drive mechanism 13 can be raised and lowered.

The front foundation 1a and the rear foundation 1b are pivotally connected to each other via pivoting members 11,11.
11 are mutually connected by a bridge pipe 33. The flexible interlocking member 10 is disposed so as to pass through the hole of the through-hole forming member 34 attached to the bridge pipe 33 below. Therefore, for example, when the front base portion 1a and the rear base portion 1b are folded in an inverted V-shape (see FIG. 8), or in a folded state, the hanging of the flexible interlocking member 10 can be prevented. .

Further, the locking plate 1 is provided so that the lifting frame 12 does not swing more than necessary by its own weight or the weight of the rear swinging portion 9.
7 and 17 are push-up frames 12 on the bottom of the bed base 1b.
It is provided to support.

The push-up frame 12 is not limited to this structure. For example, it may be a single plate,
In addition, it is only necessary that the robot be pivotally connected around the horizontal axis A in the left-right direction. Also, the shortest distance between the axis A and the front pipe 15,
Alternatively, by changing the dimension of the shortest distance between the axis A and the rear pipe 16, it is possible to change the undulating (lifting) height of the rear swing portion 9.

The driving mechanism 13 is, as shown in FIG.
40, a converter 51 for reducing the rotational force from the electric motor 40 by the worm gear 42, the worm wheel 43, and the gear group 44 and converting the rotational torque to a large rotational torque, and a drooping arm for converting the strong rotational torque converted by the converter 51 And an action portion 52 that acts on 21.

More specifically, the drive mechanism 13 processes the worm gear 42 on the output shaft of the electric motor 40, meshes the worm gear 43 with the worm wheel 43 to reduce the rotation. Reduce the rotation, gear group
The rotational force of the screw shaft 45 connected to the screw shaft 45 is converted into a linear reciprocating motion by a nut member 49 screwed to the screw shaft 45, and this is configured to be linked with the slide pipe 46, and is not shown. However, the rotation direction of the electric motor 40 can be changed by a switch at hand. Therefore, the drive mechanism 13 can generate a strong thrust by reducing the high-speed rotation of the motor 40 by the converter 51.

The slide pipe 46 has a hanging arm.
Since the slide unit 46 is connected to the front swing unit 21, the front swing unit 8 is deployed by operating the slide pipe 46 to move in the backward direction B (as shown in FIG. 6). Further, by operating the slide pipe 46 to move in the forward direction F, the front swinging unit 8 is in the standing state (as shown in FIG. 7).

The drive mechanism 13 includes a limit switch.
A fixed outer cylinder 47 attached to 48, 48 is attached, and the slide pipe 46 is moved backward B by the limit switches 48, 48.
In addition, control is performed so as not to move in the forward direction F more than necessary.

Further, the drive mechanism 13 is provided with a manual operation section 53, which has a hexagonal shape.
The gear group 44 is located at the primary end. Then, a cap 54 is fitted into the outer cylinder 41 which is an outer fitting member of the conversion unit 51, and by removing the cap 54, the manual operation unit 53 is operated with a hexagon wrench or the like to rotate the gear group 44. Can be. Therefore, when the drive mechanism 13 cannot be moved electrically due to a power failure or the like, the drive mechanism 13 can be moved manually.

As shown in FIG. 8, the driving mechanism 13 accommodates the driving mechanism 13 in a gap G formed inside when the front foundation 1a and the rear foundation 1b are folded into an inverted V-shape. In order to be able to do so, it is arranged on the front foundation 1a.

Next, as shown in FIGS. 6 and 7, a substantially W-shaped (see FIG. 2) intermediate leg 35 is provided below the bridge pipe 33, and the lower end edge of the intermediate leg 35 and the front foundation portion are provided. Detachable springs 36, 36 are connected to the front edge of the rear leg 1a and between the lower edge of the intermediate leg 35 and the rear edge of the rear foundation 1b, respectively. Therefore, the front foundation 1a and the rear foundation 1b can be easily folded into an inverted V-shape easily from the deployed state of the front foundation 1a and the rear foundation 1b by the springs 36, 36 constantly urged and resilient. Can be. The middle leg 35 is formed in a gate shape in the middle of the left and right (see FIG. 2) because the front base portion 1a and the rear base portion 1b are folded into an inverted V-shape (as shown in FIG. 8). When folded,
This is to prevent the intermediate leg 35 from hitting the drive mechanism 13.

Also, a protruding pipe attached to the lower portion of the rear swing portion 9
In the sliding part of the front pipe 15 of the push-up frame 12 that slides with 22,
A sliding member 37 such as a low friction material or a roller is provided. Accordingly, the frictional force generated at the sliding contact portion between the protruding pipe 22 and the front pipe 15 is reduced, and the swinging motion of the push-up frame 12 is almost completely reduced to the up-and-down operation of the rear swinging portion 9.

Next, FIG. 9 shows another embodiment of the shape of the base 1, wherein the shape of the base 1 on which the bed upper surface 2 is placed corresponds to the shape of the bed upper surface 2. A horizontal bottom surface portion 25, a front upward slope portion 26, a rear upward slope portion 27, a front horizontal portion 28, and a rear horizontal portion 29 are formed. Therefore, in the unfolded state of the upper surface portion 2, the upper surface portion 2 is placed so as to correspond to the base portion 1, so that the appearance is simple.

FIG. 10 shows another embodiment of the structure of the upper surface portion 2. The upper surface portion 2 of FIG. 1 has a frame having the shape shown in FIG. 2, and a mat is attached in accordance with the shape of the frame. 10, the upper surface portion 2 has a horizontal frame corresponding to the base portion 1, and has a central horizontal bottom surface portion 3, a front upward inclined portion 4, and a rear upward inclined portion 5. And the front horizontal part 6
And a mat having a rear horizontal portion 7.
As a result, the upper surface of the upper surface 2 in FIG. 10 and the upper surface of the upper surface 2 in FIG. 1 have the same shape. Therefore, in the unfolded state of the upper surface portion 2, the upper surface portion 2 is placed so as to correspond to the base portion 1, so that the appearance is simple.

Next, FIGS. 11, 12 and 13 show still another embodiment, in which a front swinging portion 8 is provided at the front of the bed upper surface portion 2 and the front swinging portion 8 is provided. Is provided with a hanging arm 21. The drive mechanism 13 provided at the front of the bed base 1 is connected to the hanging arm 21. By operating the drive mechanism 13, the front swinging unit 8 can be raised and lowered. I have.

Further, the bed upper surface 2 is a front upper surface 2a and a rear upper surface 2b,
And a front swinging portion 8 is provided on the front upper surface portion 2a.
Further, the bed base 1 has a front base 1a and a rear base 1b.
And the front base 1a and the rear base 1b are pivotally connected to each other so that the front base 1a and the rear base 1b can be folded in an inverted V-shape. The front upper surface 2a is placed on the front foundation 1a, and the rear upper surface 2b is placed on the rear foundation 1b.

That is, the bed shown in FIG. 11, FIG. 12, and FIG. 13 has the rear swing part 9, the push-up frame 12, and the flexible interlocking member 10 shown in FIG. This is a configuration in which the component requirements for the undulating operation of the portion 9 are deleted.

It should be noted that the design of the present invention can be changed, and it is not necessary to fold the bed into an inverted V-shape, and the base 1 may be formed integrally with the front base 1a and the rear base 1b. 2 may be integrated with the front upper surface 2a and the rear upper surface 2b.

[0054]

Since the present invention is configured as described above,
The following effects are obtained.

[0055] According to the bed of the first aspect, the shape of the bed upper surface portion 2 is made to conform to the shape of an ergonomically lying human body, so that it is possible to sleep in a very comfortable sleeping form. It can be provided to the market as a new and innovative design.

[0056] According to the second aspect of the present invention, the shape of the bed upper surface portion 2 is ergonomically shaped so as to conform to the shape of a lying human body. It can be provided to the market as a new and innovative design. And since the upper surface part 2 is mounted corresponding to the base part 1, the appearance becomes simple.

According to the third aspect of the present invention, the shape of the bed upper surface portion 2 can conform to the shape of an ergonomically lying human body, and the step size H is 30 mm or more and 100 mm or more.
With the following settings, it is possible to sleep in a very comfortable sleeping form without further discomfort, and to provide the market with a new and innovative design.

According to the fourth aspect of the present invention, the front and rear portions of the bed upper surface 2 can be freely raised and lowered while maintaining the shape of the bed upper surface 2 in conformity with the shape of an ergonomic lying human body. With this configuration, it is possible to get up in a very comfortable sleeping state and to maintain a comfortable sitting position. Moreover, since it has the drive mechanism 13, even one person can
The front swinging portion 8 and the rear swinging portion 9 of the bed upper surface portion 2 can be raised and lowered while lying on the bed. In addition, a hanging arm
The push-up frame 21 and the push-up frame 12 are connected by a flexible interlocking member 10, and both the swinging parts of the front swinging part 8 and the rear swinging part 9 can be raised and lowered only by the drive mechanism 13, so that the drive mechanism 13 is a single The number of parts can be reduced, the assembly is easy, and the price is low.

Since the bed can be folded into an inverted V-shape, it can be stored compactly when not in use.

[0060] According to the bed of the present invention, the frictional force generated in the sliding contact portion is reduced, and the swinging motion of the push-up frame 12 is almost completely reduced to the undulating operation of the rear swinging portion 9, and The oscillating portion 9 is easily undulated.

According to the bed of the present invention, the front portion of the bed upper surface portion 2 can be raised and lowered while keeping the shape of the bed upper surface portion 2 conforming to the shape of an ergonomic lying human body. As a result, it is possible to get up in a very comfortable sleeping state and to maintain a comfortable sitting position. In addition, since the drive mechanism 13 is provided, even one person can operate the front swinging portion 8 of the bed upper surface portion 2 while lying on the bed.

Since the bed can be folded into an inverted V-shape, it can be stored compactly when not in use.

The bed can be folded compactly when not in use, and can be stored in the gap G so that the drive mechanism 13 does not hinder the bed.

(According to the bed according to the tenth aspect) The bed can be easily turned upside down by the springs 36, 36 which are always elastically urged.
Can be folded into a letter shape.

When the drive mechanism 13 cannot be moved electrically due to a power failure or the like (in accordance with the bed according to the eleventh aspect), the drive mechanism 13 can be moved manually.

[Brief description of the drawings]

FIG. 1 is a perspective view of an unfolded state showing one embodiment of the present invention.

FIG. 2 is a perspective view of an upright state of only a bed frame and the like.

FIG. 3 is a plan view of only a bed frame and the like.

FIG. 4 is a bottom view of only a bed frame and the like.

FIG. 5 is a partial cross-sectional bottom view of the drive mechanism.

FIG. 6 is a side view of the bed in an unfolded state.

FIG. 7 is a side view of the bed in a standing state.

FIG. 8 is a side view of the folded state of the bed.

FIG. 9 is a perspective view of a developed state showing another embodiment.

FIG. 10 is a perspective view of a developed state showing another embodiment.

FIG. 11 is a perspective view of a standing state showing still another embodiment.

FIG. 12 is a plan view of only another bed frame and the like.

FIG. 13 is a bottom view of only another bed frame and the like.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base part 1a Front base part 1b Back base part 2 Top surface part 2a Front upper surface part 2b Rear upper surface part 3 Central horizontal bottom surface part 4 Front upward inclined part 5 Back upward inclined part 6 Front horizontal part 7 Rear horizontal part 8 Front Oscillating part 9 Rear oscillating part 10 Flexible interlocking member 12 Push-up frame 13 Drive mechanism 21 Hanging arm 25 Center horizontal bottom part 26 Front upward inclined part 27 Rear upward inclined part 28 Front horizontal part 29 Rear horizontal part 35 Middle leg 36 Spring 37 Sliding member 53 Manual operation part H Step size A Axis G Gap

Claims (11)

(57) [Claims] 1. A central horizontal bottom part 3, a front upward inclined part 4, a rear upward inclined part 5, and a front upward inclined part 4 connected to the front and rear of the central horizontal bottom part 3, respectively. A bed having a bed upper surface portion 2 formed by a front horizontal portion 6 connected to the front horizontal portion 7 and a rear horizontal portion 7 connected to the rear upwardly inclined portion 5. 2. A central horizontal bottom surface portion 3, a front upward inclined portion 4, a rear upward inclined portion 5, which are respectively provided before and after the central horizontal bottom portion 3, and a front upward inclined portion 4. The bed upper surface portion 2 is formed by a front horizontal portion 6 connected to the rear and a rear horizontal portion 7 connected to the rear upward-inclined portion 5.
The base portion 1 on which the bed upper surface portion 2 is placed is a central horizontal bottom surface portion 25, a front upward inclined portion 26, a rear upward inclined portion 27, and a front horizontal inclined portion 27 corresponding to the bed upper surface portion 2. A horizontal section 28,
And a rear horizontal portion 29. 3. The front horizontal part 6 and the rear horizontal part 7 of the bed upper surface part 2 are set at substantially the same height, and the front horizontal part 6, the rear horizontal part 7 and the central horizontal bottom part 3 are formed. 3. The bed according to claim 1, wherein the height H in the vertical direction is set to 30 mm or more and 100 mm or less. 4. The bed upper surface part 2 is provided with a front swing part 8 and a rear swing part 9 at a front part and a rear part, respectively, and a horizontal axis A in the left-right direction is provided at a rear part of the bed base part 1. A push-up frame 12 is pivotally connected to the periphery, and the push-up frame 12 is slidably contacted with a lower portion of the rear swing portion 9 so that the swinging motion of the push-up frame 12 and the raising / lowering operation of the rear swing portion 9 are linked. Further, the hanging arm 21 attached to the front swinging portion 8 and the push-up frame 12 are connected by a flexible interlocking member 10 and arranged at the front of the bed base 1. Installed drive mechanism
4. The bed according to claim 1, wherein the bed and the hanging arm are connected to each other, and the drive mechanism drives the front and rear swinging parts to move up and down. 5. 5. The bed upper surface portion 2 has a central horizontal bottom surface portion 3.
The front upper surface portion 2a and the rear upper surface portion 2b are divided into a front upper surface portion 2a and a rear upper surface portion 2b, and the front upper surface portion 2a is provided with a front rocking portion 8, and the rear upper surface portion 2b is provided with a rear rocking portion 9 and a bed. The base unit 1 includes a front base unit 1a and a rear base unit 1b, and the front base unit 1a and the rear base unit 1b are pivotally connected to each other in an inverted V-shape so as to be freely folded. The bed according to claim 4, wherein the rear upper portion 2b is placed on the rear base portion 1b. 6. The bed according to claim 4, wherein a sliding member is provided on a sliding portion of the push-up frame which slides on a lower portion of the rear swing portion. 7. A front swinging portion 8 is provided at a front portion of the bed upper surface portion 2, and a hanging arm attached to the front swinging portion 8.
21 and a drive mechanism 13 arranged in front of the bed base 1
4. The bed according to claim 1, wherein the front swing unit 8 is moved up and down by the drive mechanism 13. 5. 8. The bed upper surface part 2 has a central horizontal bottom surface part 3.
Is divided into a front upper surface portion 2a and a rear upper surface portion 2b, and a front swing portion 8 is provided on the front upper surface portion 2a, and the bed base portion 1 includes a front base portion 1a and a rear base portion 1b. Prepared,
The front base portion 1a and the rear base portion 1b are pivotally connected to each other in an inverted V-shape so that the front base portion 1a has the front upper surface portion 2a and the rear base portion 1b has the rear upper surface portion 2b mounted thereon. The bed according to claim 7, wherein the bed is configured. 9. The drive mechanism 13 according to claim 5, 6 or 8, wherein the drive mechanism 13 is configured to be housed in a gap G formed inside when the front base 1a and the rear base 1b are folded in an inverted V-shape. bed. 10. An intermediate leg 35 is provided at a front and rear position corresponding to a pivotal connection between the front foundation 1a and the rear foundation 1b, and a lower edge of the intermediate leg 35 and a front edge of the front foundation 1a or the vicinity thereof. The tension springs (36, 36) are connected between the lower end edge of the intermediate leg (35) and the rear end edge of the rear base portion (1b) or the vicinity thereof, respectively. Bed. 11. The bed according to claim 4, 5, 6, 7, 8, 9, or 10 wherein the drive mechanism 13 is provided with a manual operation section 53.