KR20170106899A - Bed - Google Patents

Abstract

The present invention relates to a bed (10). The bed (10) of the present invention comprises: a bed main body part (100) having a long rectangular plate-like shape, and including a bed main body bottom member (110) bendable toward a long side, and a bed support part (150) supporting the bed main body bottom member (110); and a wheel chair part (200) having the long rectangular plate-like shape and including a chair bottom member (210) bendable toward the long side. The bed main body part (100) and the wheel chair part (200) has a structure capable of being selectively integrated in a first integration state and a second integration state. In terms of the first integration state, one side along the long side of the bed main body bottom member (110) and one side along the long side of the chair bottom member (210) face each other in parallel approximately, thereby forming a single bed side. In the second integration state, the other side along the long side of the bed main body bottom member (110) and the other side along the long side of the chair bottom member (210) face each other in parallel approximately, thereby forming the single bed side as well.

Description

Bed {BED}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed in which a wheelchair unit and a bed body are combined.

As a technique for facilitating the movement of the wheelchair between the wheelchair and the bed by the patient or the elderly person who is difficult to walk (hereinafter, referred to as the caretaker) or the assistance by the caregiver for this movement, A nursing bed having a configuration in which a wheelchair having a back and a seat surface are combined with a bed main body to form the entire bed surface has been proposed (refer to Patent Document 1 and Patent Document 2).

Japanese Utility Model Registration No. 3169742 Japanese Unexamined Patent Application Publication No. 2011-115487

In a nursing bed in which a conventional wheelchair is combined with a bed main body, at least the head side direction and foot side direction in the longitudinal direction of the bed are fixed on the structure of the portion of the wheelchair. The moving direction in which the wheelchair is separated from the bed main body is fixed to either the right hand or left hand direction of the caregiver in each individual of the bed.

However, in the market, there is a demand for a bed of a type in which a wheelchair departs in any direction. Each type of bed may be selected depending on the taste of the caregiver, and may be selected depending on the shape of the room where the bed is installed or the arrangement of other furniture, for example. In addition, depending on the degree and degree of the body's incompetent body, it may be difficult or difficult to move the body in any direction, or may be selected as a matter of convenience.

In order to meet the demands of such a market, manufacturers need to manufacture both kinds of products in the nursing bed of the conventional configuration and put them on the market or manufacture them according to orders, Or difficulties in inventory adjustment of parts, prolonged delivery time, and the like.

In addition, there has been a problem in that, when a person who carries out such a daily routine uses a moving or moving of a room, there is a problem that not only the size of the bed but also the direction in which the wheelchair can be separated from the bed body is taken into consideration.

Therefore, the present invention provides a bed in which the left and right positions of the wheel body and the bed body can be replaced.

A bed according to one aspect of the present invention includes a bed main body portion including a bed main body bottom member capable of being bent in a long side direction and a bed base portion supporting a bed main body bottom member having a substantially long rectangular plate- The bed main body portion and the wheel chair portion are provided on one side along the long side direction of the bed main body bottom member and on the other side of the chair bottom member in the longitudinal direction of the chair bottom member And the other side along the longitudinal direction of the bed main body member and the other side along the longitudinal side direction of the chair bottom member are substantially parallel to each other And a second merging state in which they are opposed to each other and constitute a bed surface of a face-to-face.

The bed according to the present invention is capable of replacing the left and right positions of the wheel chair and the bed main body, and each individual of the same configuration corresponds to the difference in convenience between right and left.

Fig. 1 is a perspective view of a state in which the bed in one embodiment of the first embodiment is combined,
Fig. 2 is a perspective view of the bed in the first embodiment of the present invention,
Fig. 3 is a perspective view of the bed in the first embodiment,
4 is an exploded perspective view of the bed main body part in one use mode of the bed in the first embodiment,
5 is an exploded perspective view of the bed main body portion in another use mode of the bed in Embodiment 1,
Fig. 6 is a perspective view showing a state in which the bed in the second embodiment is combined in one use mode,
Fig. 7A is a plan view of a base part in one use mode of the bed in the second embodiment, Fig.
Fig. 7B is a plan view of the base part in another mode of use of the bed in the second embodiment, Fig.
8A is a perspective view of a wheelchair in Embodiments 1 and 2,
Fig. 8B is a front view of the wheelchair in Embodiments 1 and 2,
9 is a front view of the bed in Embodiments 1 and 2. Fig.

Hereinafter, embodiments of the present invention will be described. In addition, all of the embodiments described below represent one preferred embodiment of the present invention. Therefore, numerical values, shapes, materials, constituent elements, arrangements of elements, connection forms, and the like shown in the following embodiments are merely examples, and the present invention is not limited thereto. Constituent elements which are not described in the independent claims that represent the highest concept among the constituent elements in the following embodiments will be described as arbitrary constituent elements.

In addition, each of the drawings used in the following description is a schematic diagram, and the shape and the magnitude relationship of each component are not accurately shown. Further, although elements that can be included in the constitution of the bed according to the present disclosure are not shown in the technical description of the present invention, those which are unnecessary can be omitted. Common members in the drawings are denoted by the same reference numerals and description thereof may not be repeated.

(Embodiment 1)

[One. Configuration]

[1-1. summary]

First, the outline of the bed in the first embodiment will be described with reference to Figs. 1 to 3. Fig.

Figs. 1 and 2 are perspective views of the bed 10 in the first embodiment viewed from the same direction. Fig. The bed 10 includes a bed body 100 and a wheelchair unit 200. The bed body 100 and the wheelchair unit 200 are detachable. 1 shows a state in which the bed main body part 100 and the wheel chair part 200 are not separated from each other, that is, a state in which the wheel body part 200 is separated from the wheel body part 200. In FIG. 2, have. As the wheelchair unit 200 moves in parallel along the z axis of the city, the bed 10 transitions between the combined state shown in Fig. 1 and the separated state shown in Fig. Arrow T1 in the figure indicates a movement direction in which the wheelchair unit 200 is separated from the bed main body 100 and arrow T2 indicates a movement direction in which the wheelchair unit 200 moves together with the bed main body 100 (Hereinafter the same). In the bed 10, the bed main body portion 100 and the wheel chair portion 200 shown in Figs. 1 and 2, the feet are directed in the positive direction of the x-axis as viewed from the center, Is the proper position of the body of the caregiver.

[1-2. Outline of bed body part]

Next, the outline of the bed main body 100 will be described.

The knee support member 120c, the leg support member 120d, the bed base unit 150, and the wheelchair fixing unit 180 (not shown) are provided on the bed main body unit 100, ).

The bed main body bottom member 110 is a substantially rectangular plate-shaped member that supports the body of the person to be cared for. The substantially long rectangle referred to herein may be a long shape having a length suitable for the bed, and for example, each side may not be a straight line, and may be rounder than the shape of the city. The plate shape referred to herein may be a generally flat plate shape, and may have concavities and convexities on the upper surface (the surface facing the positive direction of the y-axis, the same shall apply hereinafter) of the plate, or may have through holes. In use, a cushion member (not shown) such as a futon or a mattress is further placed on the upper surface, and the bed main body bottom member 110 may support the cared person via the cushion member. In this embodiment, the bed main body bottom member 110 has five plate members (the back bottom member 110a, the waist bottom member 110b, the knee bottom member 110c, the leg bottom member 110d and foot bottom member 110e), and two mutually adjacent ones of them are rotatably connected around a common axis, thereby being capable of being bent in the longitudinal direction of the bed main body bottom member 110.

The knee support member 120c and the leg support member 120d shown in Fig. 2 are supported by a plurality of support members (hereinafter collectively referred to as support members 120) provided in the bed main body 100, Quot;), each of which will be described later with reference to the other drawings. The support member 120 is supported by the bed base 150 and also supports the bed main body bottom member 110.

Further, the support member 120 includes an electric actuator including one or more link mechanisms (not shown) in which a plurality of beams, shafts, etc. are combined, and which is movable and which further actuates or locks the link mechanism, Or a pneumatic or hydraulic cylinder may be provided to deform the bed main body bottom member 110 into a bent shape or to hold the predetermined shape of the bed main body bottom member 110. [ Further, instead of the electric actuator, a mechanism capable of locking in a predetermined state may be included.

Further, when the bed main body part 100 and the wheel chair part 200 are in a combined state, the chair bottom member 210, which will be described later, is also supported in the elongated shape and the bent predetermined shape. Arrows M11 and M12 in Fig. 1 show examples of the bending directions of the bed main body member 110 and the chair bottom member 210 when the bed main body part 100 and the wheel chair part 200 are in an integrated state . Thereby, the bed 10 provides the caretaker with a backrest or a base near the femur. In the field of medical care or nursing care, this function of the bed 10 can alleviate the physical burden of the caregiver and the caregiver or enhance the comfort and safety of the caregiver.

In addition, the support member 120 deforms the bed main body bottom member 110 into a predetermined shape as described above, so that the bed 10 provides functions such as lifting and knee lifting to support the rising motion of the caregiver . In this case, the bed 10 further includes a controller (not shown) for controlling the operation of the actuator. This function also alleviates the physical burden of the caregiver and the caregiver. These actuators are shown in other drawings and described later.

The bed base 150 supports the entire bed including the bed main body bottom member 110 and the support member 120 and the wheelchair unit 200 in a state of being combined with the bed main body 100 . The wheelchair fixing unit 180 is supported by the bed base 150 and is configured to support the wheelchair unit 200 in the z-axis direction of the wheelchair unit 200 when the bed body 100 and the wheelchair unit 200 co- It is fixed to regulate movement. And is one of the safety mechanisms for preventing the wheelchair unit 200 from suddenly separating from the bed main body 100. The outer shape of the bed base 150 as described above is symmetrical with respect to a plane parallel to the yz plane (hereinafter referred to as a transverse center plane) passing through the center in the long-side direction (direction along the x axis of the figure). In the drawings, the wheels mounted on the bed base 150 are disposed at asymmetric positions with respect to the transverse center plane of the bed base 150, but they may be disposed symmetrically.

In addition, members of a headboard, a footboard, a side rail, and the like (all not shown) may be mounted on the bed main body 100 to improve the convenience and safety of the caregiver. For example, the side rails may be detachable with respect to the side rail holders 190a and 190b provided in the bed base 150 as shown in Fig. The side rail holders 190a and 190b are part of the side rail holders provided in the bed base 150 and are further provided with side rail holders 190c and 190d on the side opposite to the side rail holders 190a and 190b (Hereinafter, the side rail holders 190a to 190d are collectively referred to as a side rail holder 190). The side rail holders 190c and 190d are shown in other figures to be referred to hereinafter.

[1-3. Outline of wheelchair section]

Next, the outline of the wheelchair unit 200 will be described.

The wheelchair unit 200 includes a chair bottom member 210 and a wheelchair base unit 250.

The chair bottom member 210 is a substantially rectangular plate-shaped member that supports the body of the person to be cared for. The meanings of the substantially long rectangular and plate-like portions referred to herein are the same as those of the shape of the bed main body bottom member 110. Further, at the time of use, the chair bottom member 210 may support the cared person through a cushion member (not shown). In this embodiment, the chair bottom member 210 also includes five plate members (in this order, the back bottom member 210a, the waist bottom member 210b, the knee bottom member 210b, (The leg bottom member 210d and the foot bottom member 210e), and two mutually adjacent ones of them are rotatably connected around a common axis, so that the longitudinal direction of the chair bottom member 210 It is made possible to move.

The wheelchair base unit 250 is a frame structure in which a plurality of beams or shafts are combined, and is an electric actuator for supporting the chair bottom member 210 and for actuating or locking the corresponding link mechanism, or a pneumatic or hydraulic And the like. 2, it is possible to deform the chair bottom member 210 to a predetermined bent shape or to hold the chair bottom member 210 while maintaining the predetermined shape have. Further, instead of the electric actuator, a mechanism capable of locking in a predetermined state may be included. Arrows M21 to M23 in Fig. 2 show an example of the bending direction of the chair bottom member 210 by this bending in the wheelchair unit 200. Fig. The chair bottom member 210 can be bent in such a manner that the chair bottom member 210 can be changed from a stretched shape for supporting the cared person who lie on the seat to a chair shape for providing the cared person with a back, seat, and foot support for functioning as a wheelchair have. In addition, the wheelchair base 250 may further support the chair bottom member 210 while maintaining an intermediate shape between the extended shape and the chair shape.

In addition, the wheelchair unit 200 further includes a controller (not shown) for controlling the operation of the actuator. Thereby, the caregiver can deform the wheelchair unit 200 from the flat posture to the posture of the chair without requiring the force.

In addition, the wheelchair base 250 includes wheels 230a and 230b for enabling the movement of the wheelchair unit 200. The wheels 230a and 230b are parts of the wheels of the wheelchair base 250 and further include wheels 230c and 230d (hereinafter, the wheels 230a to 230d will be collectively referred to as a wheel 230) Sam Browne). The wheels 230c and 230d are shown in the other figures referenced below.

The wheelchair unit 200 further includes an armrest 290L extending in the x-axis direction at a position where the waist bottom member 210b and the knee bottom member 210c are sandwiched between the waist bottom member 210b and the knee bottom member 210c in the z- (Hereinafter collectively referred to as an armrest 290). Both the armrest 290L and the armrest 290R are located on the horizontal side of the wheelchair unit 200 from the waist bottom member 210b of the chair bottom member 210 in this embodiment, And has an elongated shape extending along the long side direction at a position across the member 210c.

Each of the armrests 290 includes an armrest top 290a and an armrest cover 290b. 2, most of the armrest 290L is hidden, and only a small part of the armrest 290a of the armrest 290L is shown.

The arm rest 290 is movable up and down (in the direction along the y-axis of the figure). 2, the armrest 290 is in the lowest position. For example, when the wheelchair unit 200 is in an integrated state with the bed body 100, for example, the bed main body bottom member 110 and the chair bottom member 210, which are parallel to the long side direction, Can be lowered to a height at which the first electrode 290a does not interfere. When the wheelchair unit 200 is in the separated state from the bed main body 100, the armrest 290 is operated in the upward direction indicated by the arrow M24U from this position so that the top face of the armrest top 290a For example, at the height of the vicinity of the elbow of the person to be caretaker sitting on the wheelchair unit 200. The armrest 290 will be described later.

The outer shape of the wheelchair unit 200 is basically symmetrical with respect to the plane parallel to the xy plane passing through the center in the z-axis direction.

[1-4. Outline of Combined State of Bed Body and Wheel Chair Unit]

When the bed main body part 100 and the wheel chair part 200 are in a combined state, as shown in Fig. 1, one side along the long side direction of the bed main body bottom member 110 and one side along the long side direction of the chair bottom member 210 One side that follows is approximately parallel. More specifically, the upper surface of the bed main body bottom member 110 and the upper surface of the chair bottom member 210 form a bed surface of the bed main body portion 100 and the wheel chair portion 200, respectively. The knee bottom member 110c and the knee bottom member 210c are connected to each other via a connecting member 210. The back bottom member 110a includes a back bottom member 210a, a waist bottom member 110b a waist bottom member 210b, a knee bottom member 110c a knee bottom member 210c, The leg bottom member 210d is in parallel with the foot bottom member 210e and the foot bottom member 110e is in parallel with the foot bottom member 210e.

Here, in the bed 10 separated from the united state shown in Fig. 1 into the separated state shown in Fig. 2, the chair bottom member 210 is in contact with the bed main body member 110). Accordingly, in order to allow the caregiver to return to the wheelchair unit 200, the caregiver moves the caregiver from the lying state toward the right hand of the caregiver.

Further, the bed 10 according to the present embodiment can be used in a mode in which the cared person is moved from the lying state to the left hand side of the cared person in order to move the cared person to the wheel chair unit 200 . Fig. 3 is a perspective view of the bed body 100 and the wheelchair unit 200, prepared for incorporation for this use, in the same direction as Figs. 1 and 2. Fig.

3, in the state shown in FIG. 3, the direction of the chair bottom member 210 and the difference between the wheel 230 and the armrest 290, which are seen in front of the wheel chair base 250, , It can be seen that the entire wheelchair unit 200 is rotated 180 degrees in the horizontal direction (about the y axis) from the state shown in Fig. On the other hand, in the bed main body part 100, the direction of the bed base part 150 does not change, but the bed main body bottom member 110 is rotated 180 degrees in the horizontal direction from the state shown in Fig. 3, in the bed 10 in which the bed main body part 100 and the wheel chair part 200 are combined, the angle of each of the members of the bed main body bottom member 110 and the chair bottom member 210 The above parallel arrangement with the member is maintained. On the other hand, the lateral position between the bed main body bottom member 110 and the chair bottom member 210 is changed from the state shown in Fig. In the cooperative bed 10, the caregiver moves the cared person from the laid state toward the left hand of the cared person, and moves from the bed main body 100 to the wheel chair unit 200.

The bed main body portion 100 and the wheel chair portion 200 of the bed 10 are formed such that one side along the long side direction of the bed main body bottom member 110 and one side along the long side direction of the chair bottom member 210 are approximately (Hereinafter also referred to as a first merging state) in which the bed bottom surface of the chair bottom member 210 is parallel to the front surface of the bed main body 110 and the other side along the longitudinal direction of the bed main body bottom member 110, (Hereinafter also referred to as " second union state ") in which the other sides are substantially parallel to each other to form a bed surface of the side surface. 2 and 3 show a state in which the bed body 100 and the wheelchair unit 200, one of which is prepared to enable the first merging state, and the other body of the wheelchair unit 200, The bed body 100 and the wheelchair unit 200, which are prepared to be able to be rotated, as shown in FIG.

The bed 10 according to the present embodiment can be configured such that the bed main body bottom member 110 and the chair bottom member 210 are bent so that the back side It is possible to provide a function to support the caregiver. In the following section, the structure of the bed main body portion 100 that enables the functions of the bed main body bottom member 110 and the chair bottom member 210 to be provided even when the left and right positions thereof are exchanged will be described.

[2. Detailed configuration of bed main body]

Fig. 4 is an exploded perspective view of the bed main body part 100 in the assembled state shown in Fig. 2, and Fig. 5 is an exploded perspective view of the bed main body part 100 in the assembled state shown in Fig. 4 and 5 are views in which the bed main body 100 is grasped in substantially the same direction as in Figs. 1 to 3. Fig. 4 and 5 show disassembly of the bed main body part 100 in which one of the bed main body part 100 and the wheel chair part 200 is assembled so as to be in the first merging state, And the other shows the disassembled state of the bed main body 100 assembled to enable the second merging state. 4 and 5 indicate the approximate mounting positions of the components for making the bed main body 100 from the disassembled state to the assembled state. The details are described in the following description of each component of the bed body 100. 2 and 3 are also properly referred to in order to explain the arrangement of components in an assembled state and the like.

The bed body 100 includes a center support member 120b in addition to the upper body support member 120a, the knee support member 120c and the leg support member 120d. The center support member 120b is also supported by the bed base 150 and is one of the support members 120 for supporting the bed main body bottom member 110. [ These supporting members 120 are disassemblable and are provided with an upper body support member 120a, a center support member 120b, a knee support member 120c, a leg support member 120d. 4 and 5, the center support member 120b is rotated 180 degrees in the horizontal direction with respect to the bed base 150, and the upper body support member 120a, the knee support member 120b, The attachment positions of the leg support member 120c and the leg support member 120d correspond to each other.

The center support member 120b in the present embodiment is a structure in which a plurality of beams and shafts are connected and directly supports the back bottom member 110a via an upper body support member 120a described later The knee bottom member 110c and the leg bottom member 110d via the knee support member 120c described later. When the main body part 100 and the wheelchair body part 200 are in an assembled state, the center support member 120b moves the back bottom member 210a through the upper body support member 120a to the knee support member 120c To further support the knee bottom member 210c and the leg bottom member 210d. 4 and 5, in the assembled state for the first assembled state and the assembled state for the second assembled state, the mounting position of the center support member 120b is the same A1)).

The central support member 120b also includes an actuator 140a (see FIG. 4) and an actuator 140b (see FIG. 5).

The actuator 140a is connected to one of the link mechanisms included in the support member 120 or moves as a part of the link mechanism to move the body main body 110 and the chair bottom member 210 in the direction of the respective long sides. For example, the bending in the direction indicated by the arrow M11 in Fig. 1 is a part of this bending operation. That is, the actuator 140a is a mechanism for providing the function of lifting up the one end in the x-axis direction. The actuator 140a in this embodiment is an example of the first deflection mechanism.

The actuator 140b is connected to the other one of the link mechanisms included in the support member 120 or moves as a part of the link mechanism to move the bed main body bottom member 110 and the chair bottom member 120b through the knee support member 120c, (210) in the respective long side directions. For example, the bending in the direction indicated by the arrow M12 in Fig. 1 is a part of this bending operation. That is, the actuator 140b is a mechanism for realizing the function of raising the knee at one end opposite to the side where the actuator 140a provides the function of raising the back in the x-axis direction. The actuator 140b in this embodiment is an example of the second mechanism.

The central supporting member 120b having such a configuration is configured such that when the bed main body 100 and the wheel chair unit 200 are combined in the first combined state and when they are combined in the second combined state, 150 in the longitudinal direction. 2 and 3, even if the bed main body bottom member 110 and the wheel chair unit 200 are rotated 180 degrees in the horizontal direction, the bed 10 can be provided with functions such as lifting up the to-be-cared person The actuator for providing can be installed in the correct direction. In the switching operation between the first merging state and the second merging state, the change of the relatively complicated and heavy central support member 120b including the actuator is performed only at the same mounting position, Reduction can be planned. The center support member 120b in this embodiment is an example of the second support member.

The upper body support member 120a in this embodiment is a long beam and is mounted on the one end side in the x-axis direction of the central support member 120b (arrow A2) in the assembled state of the bed body 100, And the back member 110a. The upper body supporting member 120a further supports the back bottom member 210a of the wheelchair unit 200 when the bed body 100 and the wheelchair unit 200 are in an assembled state. When the bed main body bottom 110 is in the extended state, the bed base 150 is further supported by the above-described central support member 120b. Further, when the bed main body bottom 110 is in the extended state, And is also directly supported at both ends in the long-side direction (see Figs. 2 and 3).

The position indicated by the arrow A2 is a movable portion of the link mechanism operated by the actuator 140a, and the upper body supporting member 120a moves up and down by the actuator 140a. The backing up function of the bed 10 is realized by the upper body supporting member 120a moving up and down while supporting the back bottom member 110a and the back bottom member 210a. The upper body supporting member 120a in this embodiment is an example of the first supporting member.

The knee supporting member 120c in the present embodiment is a structure in which two beams arranged in parallel are connected by a hinge. In the assembled state of the bed main body part 100, the shaft part of the hinge is set up (the positive direction of the y-axis), and one of the beams is moved in the x-axis direction of the center support member 120b, (Arrow A3), and the other beam is mounted on one end side of the leg support member 120d, which will be described later, in the x-axis direction (arrow A4). The knee support member 120c is positioned below the knee bottom member 110c and the leg bottom member 110d to support them and the shaft portion of the hinge is supported by the knee bottom member 110c and the leg bottom member 110d Located below the connecting part. The knee support member 120c further includes a knee bottom member 210c and a leg bottom member 210d of the wheelchair unit 200 so that the knee bottom member 210c, And the shaft portion of the hinge is also located below the connecting portion of the knee bottom member 210c and the leg bottom member 210d. The knee support member 120c is indirectly supported to the bed base 150 via the center support member 120b and the leg support member 120d.

The position indicated by the arrow A3 is the movable part of the link mechanism operated by the actuator 140b and the operation of the actuator 140b and the sliding of the leg support member 120d on the bed base part 150 in the x- The hinge of the knee supporting member 120c opens and closes. The knee lifting function of the bed 10 is such that the shaft portion of the hinge which is raised by closing the hinge of the knee supporting member 120c is connected to the connecting portion of the knee bottom member 110c and the leg bottom member 110d and the connecting portion of the knee bottom member 210c And the leg bottom member 210d. The knee bottom member 110c in this embodiment is an example of a part of the third supporting member.

The leg support member 120d in the present embodiment is a structure body in which a plurality of beams are connected to form a substantially rectangular shape. In the assembled state of the bed main body part 100, it is supported by the bed base part 150 (refer to FIG. 2 and FIG. 3) by being positioned below the leg bottom member 110d and the foot bottom member 110e The leg bottom member 110d, and the foot bottom member 110e. The leg support member 120d in this embodiment is an example of another part of the third support member.

The position of the upper body supporting member 120a (first supporting member) having such a configuration and the position of the knee bottom member 110c and the leg supporting member 120d (third supporting member) (200) cooperate with each other in the first combined state and in the second combined state, they move symmetrically with respect to the transverse center plane of the bed base portion (150).

The bed main body bottom member 110 is moved symmetrically with respect to the transverse center plane of the bed base portion 150 after the positional relationship between the support member 120 and the bed base portion 150 is changed as described above (Indicated by arrow A6). Then, the wheelchair unit 200 moves symmetrically with respect to the transverse center plane of the bed base 150, moves in parallel along the z axis, and merges with the bed body 100.

In this way, the left and right positions of the bed main body bottom member 110 and the seat bottom member 210 are changed. Before and after such replacement, the positional relationship between the bed main body bottom member 110 and the support member 120 is changed, Axis direction with respect to the center plane of the bottom member 110 in the x-axis direction. Movement of the link mechanism due to the operation of the support member 120 and the actuator 140 is performed by the upper body support member 120a and the knee bottom member 110c by the operation of the chair bottom member 210). That is, functions such as lifting up are provided to the caregiver regardless of the positional relationship between the bed body 100 and the left and right sides of the wheelchair unit 200. In addition, as for the operation for switching between the first merging state and the second merging state, the object to be replaced with respect to the bed base unit 150 does not include the actuator, and the first supporting member and the third supporting member, which are relatively light, , It is possible to reduce the load.

[3. effect]

The bed 10 according to the present embodiment has a substantially rectangular plate-like shape and is provided with a bed main body bottom member 110 capable of being bent in the longitudinal direction and a bed base portion And a chair body 200 including a chair bottom member 210 having a substantially rectangular plate shape and capable of being bent in a long side direction, One side along the long side direction of the bed main body member 110 and one side along the long side direction of the chair bottom member 210 face each other in substantially parallel to form a bed side surface A first merging state and a second merging state in which the other side along the longitudinal direction of the bed main body bottom member 110 and the other side along the longitudinal direction of the chair bottom member 210 are substantially parallel to each other, Optionally The polymer has a structure capable.

Thus, for example, the maker or the supplier of the bed 10 can selectively replace the left and right positions of the bed body 100 and the wheelchair unit 200 with the bed 10 having the same components. Further, in the case of the moving of the user, in the bed 10, the moving destination of the user is not limited by the separable direction of the wheelchair. In addition, the arrangement of the bed 10 at the moving destination is limited by the detachable direction of the wheelchair, or the bed 10 is not required to be replaced.

Specifically, for example, the bed main body part 100 is further supported by the bed base part 150 and is arranged in the order along the long side direction of the bed main body member 110 supporting the bed main body bottom member 110 And the second support member 120b includes a first support member 120a, a second support member 120b and a third support member 120c and 120d arranged in a line in the first assembly state, In which the bed body bottom member 110 is moved along the long side direction of the bed main body member 110 via the first supporting member 120a and the third supporting members 120c and 120d in the second combined state, The first supporting member 120a and the second supporting member 120b are arranged in a state where the first supporting member 120a and the second supporting member 120b are combined with each other when the bed body 100 and the wheelchair unit 200 are combined in the first combined state, The member 110 and the wheelchair unit 200 are symmetrically moved with respect to the transverse center plane of the bed base 150.

Thus, for example, when the bed 10 formed by combining the bed body 100 and the wheelchair unit 200 has a backing function, the left and right positions of the bed body 100 and the wheelchair unit 200 are replaced The direction of the first moving mechanism 140a for the back-up function can be easily changed.

Alternatively, the bed main body portion 100 may further include a first main body portion 110 which is supported on the bed base portion 150 and which supports the main body bottom member 110, The second support member 120b includes a support member 120a, a second support member 120b and third support members 120c and 120d. The second support member 120b includes a first support member 120a, The first body mechanism 140a for moving the member 110 along the longitudinal direction of the bed main body member 110 and the bed main body member 110 via the third supporting members 120c and 120d, And a second moving mechanism 140b for moving the body member 100 along the longitudinal direction of the bottom member 110. When the bed body 100 and the wheelchair unit 200 are combined in the first combined state and the second combined state, The second support member 120b, the first support member 120a, the third support members 120c and 120d, and the wheel < RTI ID = 0.0 > Fisherman 200 may be flipped about the horizontal central plane of the bed base portion 150.

Thus, for example, when the bed 10 is provided with the back-up function and the knee lifting function, when the left and right positions of the bed body 100 and the wheelchair unit 200 are changed, The orientation of each of the mechanism 140a and the second bending mechanism 140b for the knee lifting function can be easily changed.

(Embodiment 2)

[One. summary]

The configuration for enabling the replacement of the bed main body portion and the left and right positions of the wheel chair portion is not limited to the above configuration. The bed 1010 of the present embodiment includes a bed body portion including a base portion that is different in configuration from Embodiment 1 and is capable of replacing the left and right positions with the wheel chair portion.

6 is a perspective view showing an appearance of the entire bed 1010 in this embodiment. The appearance of the bed 1010 and the operations indicated by the arrows M11 and M12 in the figure are common to the appearance and operation of the bed 10 shown in Fig. Since the wheelchair unit, the bed main body bottom member and the supporting member provided in the bed 1010 are also common to the wheelchair unit 200, the bed main body bottom member 110 and the supporting member 120 of the first embodiment, Is replaced with the description of Embodiment 1 and Figs. 2 to 5, and is not repeated here. The appearance of the bed main body part of the bed 1010 is basically the same as that of the bed main body part 100 of the first embodiment and the detailed structure of the bed base part differs from the bed base part 150. [ Hereinafter, the configuration of the bed base 1150 of the bed 1010 will be described.

[2. Composition of bed expectation part]

7A and 7B are plan views of the bed base 1150 in the second embodiment.

The components of the bed base 1150 shown in Figs. 7A and 7B are basically the same as those of the first embodiment. Here, the constituent elements not described with reference to Figs. 1 to 5 will be described. In the bed rest 1150 shown in Figs. 7A and 7B, it is assumed that the foot is directed in the positive direction of the x-axis as viewed from the center, and the head is directed in the negative direction as the appropriate position of the body of the caregiver .

The rectangle area A11 of the single dotted line shown in Figs. 7A and 7B is a rectangular area A11 of the center of the center supporting member 120b in the bed base part 1150, that is, And a mounting position A11 of the supporting member 120b). In the present embodiment, unlike the first embodiment, there is no bracket-like member for supporting the center support member 120b, and the center support member 120b is supported on the bed base 1150 in a manner different from Embodiment 1 do. For example, the center support member 120b is provided with a hook (not shown), and the hook is supported by the bed base 1150 by being mounted on a beam constituting the bed base 1150.

The rectangle area A21 of the single dotted line is a position at which the wheelchair supporting part 250 of the wheelchair part 200 in the state of incorporation with the bed main body part 100 entering the proceeding direction indicated by the arrow T2 is fixed Hereinafter simply referred to as a fixed position A21 of the wheelchair unit 200).

The bed expectation beam 170 is a beam-shaped member extending in the longitudinal direction of the bed base 1150 (in the direction along the x axis of the drawing), and has a rigidity for supporting a large load of the bed 1010 and the cared person The branch is for connecting the head side of the bed rest 150 to the leg side. Therefore, in the present embodiment, the bed expectation beam 170 is located in the mounting position A11 in plan view so as not to interfere with the wheelchair unit 200. [

The wheelchair stopper 175 is a member that is fixed to the bed expectation beam 170 and extends from the mounting position A11 of the center support member 120b to the fixing position A21 of the wheelchair unit 200 as viewed in plan view . At the start of the separation from the bed main body 100, the wheelchair unit 200 is in a state in which the armrest 290 is lowered (see Fig. 6). If the wheelchair unit 200 carrying the cared person is moved in this state, the cared person may fall. (In the direction of the arrow T 1) in which the wheelchair unit 200 is separated from the bed main body 100 in a state in which the armrest 290 is lowered, the armrest 290 The lower end portion of the arm rest 290L abuts on the concave portion of the U-shaped portion (the portion in the fixed position A21) of the wheelchair stopper 175 so that the movement of the wheelchair portion 200 is restricted I can not. When the arm rest 290 is lifted so that the lower end does not abut the wheelchair stopper 175, this restriction is released. Then, the wheelchair unit 200 can be moved and separated in a safe state in which the armrest 290 prevents the caregiver from dropping.

2 to 5, only one wheelchair fixing portion 180 is visible. However, as shown in Figs. 7A and 7B, at the both ends in the x-axis direction of the fixed position A21 of the wheelchair portion 200 Respectively.

The wheelchair fixing unit 180 and the bed expectation beam 170 are positioned in the direction of the short side of the bed base 1150 (shown in Fig. 7A) and the bed base unit 1150 shown in Fig. 7B (the dashed line in Figs. 7A and 7B, hereinafter also referred to as the longitudinal center plane) that passes through the center of the xy plane (the direction along the z axis). This makes it possible to replace the mounting position A11 of the center support member 120b and the fixing position A21 of the wheel chair unit 200 in the bed base 1150. [ Further, the wheelchair fixing unit 180 and the bed expectation beam 170 are fixed to the bed base 1150 by screws or the like, so that they can be attached and detached.

That is, with this configuration, the fixed position of the wheelchair unit 200 is moved symmetrically with respect to the longitudinal center plane of the bed base 1150. The center support member 120b (second support member) can be mounted on the bed base 1150 at a position symmetrically moved with respect to the longitudinal center plane of the bed base 1150. Thereby, the bed main body 100 and the wheel chair 200 can be selectively combined into the first merging state and the second merging state as described above. In comparison with the first embodiment, the movement of the wheelchair unit 200 in the first merging state and the second merging state is as follows. In the first embodiment, However, this embodiment is a symmetric movement of the bed base 1150 with respect to the longitudinal center plane.

When the wheel body fixing part 180 and the wheelchair supporting part 200 are combined in the first combined state and the second combined state, And is symmetrically moved about the longitudinal center plane. Thus, even when the bed main body 100 and the wheel chair part 200 are in the first combined state and the second combined state, the occurrence of unintentional separation of the wheel chair part 200 is suppressed.

In addition, the position of the wheelchair stopper 175 and the stretching direction are changed in accordance with the movement of the bed expectation beam 170 described above. Thus, even when the bed body 100 and the wheelchair unit 200 are separated from each other, the wheelchair stopper 175 can function as described above.

The change of the position of the wheelchair fixing unit 180 and the bed expectation beam 170 as described above is realized, for example, in the following configuration. The bed expectation beam 170 and the wheelchair fixing unit 180 are fixed to the bed base 1150 with screws. In this case, screw holes for fixing these component elements are provided in the bed base 1150 at positions symmetrical with respect to the longitudinal center plane of the bed base 1150. This makes it possible to fix the bed expectation beam 170 and the arrangement of the wheelchair fixing portion 180 symmetrical with respect to the longitudinal center plane of the bed base portion 1150.

In addition, the configuration for fixing the wheelchair fixing unit 180 and the bed expectation beam 170 to the bed base 1150 is not limited to a screw. For example, the wheelchair fixing unit 180 and the bed expectation beam 170 may be provided with brackets, these brackets may be laid over the beams of the bed rest 1150, and the pins for preventing fallout may be inserted.

The support member 120 other than the center support member 120b is moved according to the position of the center support member 120b. 7A, the upper body supporting member 120a, the knee supporting member 120c and the leg supporting member 120d are woven in the same manner as in Fig. In the case of Fig. 7B, the upper body supporting member 120a, the knee supporting member 120c and the leg supporting member 120d are woven as in Fig. The knee support member 120c is moved symmetrically with respect to the longitudinal center plane of the bed base 1150 (see Figs. 2 to 5) because the hinge of the knee support member 120c is separated from the edge of the bed Thereby making it difficult for the fingertip or the caregiver to put the fingers put under the bed main body bottom member 110 in the vicinity of the bed into the hinge.

As described above, in the bed 1010 in this embodiment, the left and right positions of the wheel body portion 200 and the bed body portion 100 before delivery can be exchanged in the same manner as the bed 10 of the first embodiment. In addition, in the bed 1010 of the present embodiment, even after the start of use, for example, even at a place where the bed 1010 is not turned, the position of the subject (head and foot position) Or change the route of the wheel chair unit 200 for incorporation with the bed main body 100. [

The bed expectation beam 170, the wheelchair stopper 175, and the wheelchair fixing portion 180, which are described above as components that are symmetrically moved about the longitudinal center plane of the bed base 1150, And the bed base 1150 does not need to include all of these components. In some designs, for example, the bed expectation beam 170 or the wheelchair stopper 175 may be symmetric with respect to the longitudinal center plane of the bed base 1150 from the beginning. These components are not included in the scope of movement. Further, the bed base 1150 may be further provided to be symmetrically moved to other components.

[3. effect]

In the bed 1010 of the present embodiment, the bed main body part 100 is supported by the bed base part 1150 and has a long side of the bed main body member 110 supporting the bed main body bottom member 110 The first supporting member 120a, the second supporting member 120b and the third supporting members 120c and 120d aligned in the order of the first and second supporting members 120a and 120b, The second support member 120b and the wheelchair unit 200 are symmetrically moved with respect to the longitudinal center plane of the bed base part 1150 when the first support member 120a and the second support member 120b coalesce together in the coalescence state and the second coalescence state.

The left and right positions of the bed body 100 and the wheelchair unit 200 can be selectively replaced with the bed 1010 having the same constitution as the bed 10 in the first embodiment.

The bed main body part 100 further includes a wheelchair fixing part 180 that is supported on the bed base part 1150 and fixes the wheelchair part 200 when the first merging state and the second merging state And when the wheel body part 100 and the wheelchair body part 200 are combined in the first combined state and the second combined state, the wheelchair fixing part 180 is fixed to the bed base part 1150 As shown in Fig.

Thus, in the bed 1010, even if the left and right positions of the bed body portion and the wheelchair portion are exchanged, a safety mechanism for preventing unintentional separation of the wheelchair portion 200 from the bed body portion 100 can be made operative.

(etc)

[One. Arm rest]

As described above, in the wheelchair unit 200, the armrest 290 includes an armrest top 290a and an armrest cover 290b. When the wheelchair unit 200 is separated from the bed body 100, the armrest 290 is raised to a predetermined height. 8A is a perspective view of the wheelchair unit 200 with the armrest 290 raised to a predetermined height and FIG. 8B is a front view of the wheelchair unit 200 with the armrest 290 raised to a predetermined height. to be. When the wheelchair unit 200 is in an integrated state with the bed main body 100, the armrest 290 is operated in the downward direction indicated by the arrow M24D from the position shown in Figs. 8A and 8B, For example, a height that does not interfere with the body bottom member 110 and the chair bottom member 210 which are parallel to the long side direction to form a bed surface. Arrows M21 to M23 indicate examples of the bending direction of the chair bottom member 210 as in Figs. 2 and 3. Fig.

The armrest top 290a is a wheelchair part of a person to be cared for sitting on the wheel chair part 200 or holding it for supporting the body according to a caregiver who stands up from the wheel chair part 200 or sits on the wheel chair part 200 200 (in the z-axis direction in the figure).

The armrest cover 290b has an outer side surface and an inner side surface that are elongated along the long side direction of the chair bottom member 210. [ (The waist bottom member 210b and the knee bottom member 210c) under the armrest top 290a in the z-axis direction when the armrest 290 is in the used position, as shown in Figs. 8A and 8B, The walls are placed between. By this, it is prevented that the belongings such as the towel of the caregiver or the part of the body of the cared person, for example, the knee or the femur, fall off the armrest top 290a from the seat surface of the wheelchair unit 200 and protrude. For example, a leg protruding outward beyond the outer surface of the armrest 290 may lead to injury of a person to be cared for or a person in the vicinity when it collides with an obstacle in the course of the wheelchair unit 200. However, depending on the caregiver, the legs can not move freely, and suddenly, they may deviate left and right. The armrest cover 290b functions as a safety mechanism for regulating the movement of such a leg.

[2. Side line]

The outer side surface of the side rail holder 190 and the outer side surface of the armrest cover 290b of the bed main body portion 100 are positioned so that the bed main body portion 100 and the wheel chair portion 200 are in the first combined state, Or may be configured so as to form an integral line extending in the longitudinal direction of the bed main body 100 when in the coalesced state. This line is also shown in the combined state of the bed main body part 100 and the wheel chair part 200 shown in Fig. 1, but will be further described in the point of being integrated by using the example shown in Fig.

9 is a front view of the bed 10 in which the bed body 100 and the wheelchair unit 200 are combined. The side rail holder 190 has an outer surface extending in the longitudinal direction of the bed main body 100. In the figure, the line L1 having the outer side surface of the side rail holder 190a, the line L2 having the outer side surface of the armrest cover 290b, and the line L3 having the outer side surface of the side rail holder 190b Is on one imaginary straight line along the xy-directional hairy arrow shown below is an example of the above-mentioned "forming an integral line". More specifically, the lines L1 to L3 shown in the figure are recesses (grooves) extending along the same straight line, which are provided on the outer side surfaces of the side rail holder 190 and the armrest cover 290b.

The caregiver can visually check whether the armrest 290 is housed at an appropriate position (height) and whether the combination of the bed body 100 and the wheelchair unit 200 is appropriately performed by such a line Can be easily confirmed.

Although the lines L1 to L3 are shown as grooves in Fig. 9, the lines L1 to L3 are not limited to this. The lines L1 to L3 may be convex portions extending along the same straight line, for example, lines of colors that can be easily seen, or a combination of concave portions or convex portions and colors. It should be noted that the line extending over the entire longitudinal direction of the bed 10 shown in Fig. 9 may not be used. 9, there are concave portions only in the right half of L1 and the left ends of L2, the left half of L3, and the right end of L2, and when the bed body 100 and the wheelchair unit 200 are properly combined, The part may follow the same straight line. Further, the appearance of the line may be different on the left and right sides of the bed 10. This makes it possible to easily grasp the positional relationship between the wheelchair and the bed main body portion in a case where the bed main body portion which can be combined with the wheelchair is present at a plurality of places such as a home and a nursing facility or a sickroom and a laboratory or treatment room. Such an integral line may also be provided on the respective upper surfaces of the armrest top 290a and the side rail holder 190. [ Thus, the caregiver and the caregiver can easily confirm whether the combination of the bed body 100 and the wheelchair unit 200 is appropriately performed from above.

It is to be understood that the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And forms realized by not having a part are also included in the present invention.

For example, the bed 10 may not have the function of raising the knee. That is, the functions provided by the folding of the bed main body bottom member 110 and the chair bottom member 210 may be only lifted.

In this case, the support member 120 may not be provided with a link mechanism for raising the knee or an actuator 140b (second bending mechanism). The upper body supporting member 120a (the first supporting member), the knee supporting member 120c and the leg supporting member 120d (third supporting member) But may be configured to be symmetrical with respect to the transverse center plane of the bed main body 100 in the assembled state. For example, the first supporting member and the third supporting member are not movable such that the hinge of the knee supporting member 120c is replaced by a beam in the third supporting member. In the first combined state and the second combined state, the center support member 120b (second support member) is moved in the direction of the bed base 150 in the direction of symmetry with respect to the transverse center plane of the bed base 150, Is the same as the first embodiment. On the other hand, in the first combined state, the first biasing mechanism of the center support member 120b moves the bed main body bottom member 110 for lifting up via the first supporting member, and in the second combined state, The bed main body bottom member 110 is bent for lifting. That is, unlike the first embodiment, in this case, the positional relationship between the first supporting member and the third supporting member with respect to the bed base 150 can not be replaced.

In this case, the bed main body bottom member 110 may be composed of, for example, a member corresponding to the back bottom member 110a which can be lifted for lifting up the back main body and two other members. The bed main body bottom member 110 in this case is supported by the supporting member 120 in a direction symmetrically moving with respect to the transverse center plane of the bed base part 150, as in the first embodiment. Alternatively, the bed main body bottom member 110 may be constituted by three members, which are members corresponding to the back bottom member 110a at both ends in the long side direction, and members for connecting these two members therebetween. In this case, the bed main body bottom member 110 is positioned in the direction of symmetry with respect to the transverse center plane of the bed base part 150 in the first combined state and the second combined state in the positional relationship with the bed base part 150 May be supported by the support member 120, but it is not necessary to rotate the support member 120. Also, as in Embodiment 1, a bed main body bottom member 110 including five members may be used.

When the bed body 100 or the wheelchair unit 200 has other components than the above components, the components may be combined with the first main assembly 100 of the bed body 100 and the wheelchair unit 200, The position on the bed base 150 or the wheelchair base 250 may be changed in the second merging state. For example, a mechanism including an actuator for vertically moving the bed 10, a controller and its wiring for controlling each of the actuators described above, a power supply to the actuator, and a cable for charging the battery, It is appropriately disposed at a position where the movement does not interfere with each merging state, or at a position where the cared person or caregiver can easily use.

[3. effect]

As described above, in the bed 10 and the bed 1010 in each of the above embodiments, the wheelchair unit 200 includes the armrest cover 200 having the outer side extending in the longitudinal direction of the chair bottom member 210, (290b).

As a result, it is possible to prevent the belongings or a part of the body of the caregiver from being blown off or falling off from the seat surface of the wheelchair unit 200. Thereby, it is possible to avoid interference with the obstacle on the course of the wheel chair part 200. [

The bed main body part 100 further includes a side rail holder 190 having an outer side surface extending along the long side direction of the main body part of the bed and the bed main body part 100 and the wheel chair part 200 are in the first combined state The outer side surface of the side rail holder 190 and the outer side surface of the armrest cover 290b may form an integral line extending along the long side direction of the bed body portion 100. [

This makes it possible to easily confirm whether or not the armrest 290 is housed at an appropriate position (height) and whether the combination of the bed body 100 and the wheelchair unit 200 is appropriately performed have.

10, 1010: bed
100:
110: bed main body member
110a, 210a:
110b, 210b: a waist bottom member
110c, 210c: knee bottom member
110d, 210d: leg bottom member
110e, 210e: a foot bottom member
120: support member
120a: upper body supporting member (first supporting member)
120b: center support member (second support member)
120c: knee support member (third support member)
120d: leg supporting member (third supporting member)
140a: Actuator (first bending mechanism)
140b: Actuator (second bending mechanism)
150, 1150:
170: bed expectation beam
175: Wheelchair stopper
180:
190, 190a, 190b, 190c, 190d: side rail holder
200: Wheelchair section
210: chair bottom member
230, 230a, 230b, 230c, 230d:
250: Wheel chair base part
290, 290L, 290R: armrest
290a: Armrest top
290b: Arm rest cover

Claims (7)

A bed main body portion including a bed main body bottom member having a substantially rectangular plate shape and capable of moving in a long side direction and a bed base portion for supporting the bed main body bottom member;
And a chair bottom member having a substantially rectangular plate-like shape and capable of being bent in a long side direction,
The bed main body part and the wheel chair part are arranged such that one side along the longitudinal direction of the bed main body bottom member and one side along the longitudinal side direction of the chair bottom member are substantially parallel to each other, And the other side along the longitudinal direction of the chair bottom member and the other side along the longitudinal direction of the chair bottom member face each other substantially in parallel to form a bed surface of the side surface of the chair bottom member Having
bed. The method according to claim 1,
The bed main body further includes a first supporting member, a second supporting member, and a third supporting member, which are supported on the bed base portion and are arranged in order along the longitudinal direction of the bed main body bottom member, Member,
Wherein the second supporting member passes through the first supporting member in the first merging state and the bed main body bottom member extends in the longitudinal direction of the bed main body through the third supporting member in the second merging state Therefore, it is possible to provide the first moving mechanism,
When the bed main body part and the wheel chair part are combined in the first merging state and the second merging state,
Wherein the second support member, the bed main body bottom member, and the wheel chair portion are symmetrically moved with respect to the transverse center plane of the bed base portion
bed. The method according to claim 1,
The bed main body further includes a first supporting member, a second supporting member, and a third supporting member, which are supported on the bed base portion and are arranged in order along the longitudinal direction of the bed main body bottom member, Member,
The second supporting member includes a first moving mechanism for moving the bed main body bottom member along the longitudinal direction of the bed main body member via the first supporting member, And a second biasing mechanism for biasing the bottom member along the longitudinal direction of the bed main body bottom member,
When the bed main body part and the wheel chair part are combined in the first merging state and the second merging state,
Wherein the second support member, the first support member, the third support member, and the wheel chair portion are symmetrically moved about the transverse center plane of the bed base portion
bed. The method according to claim 1,
The bed main body further includes a first supporting member, a second supporting member, and a third supporting member, which are supported on the bed base portion and are arranged in order along the longitudinal direction of the bed main body bottom member, Member,
When the bed main body part and the wheel chair part are combined in the first merging state and the second merging state,
The second support member and the wheel chair portion are symmetrically moved with respect to the longitudinal center plane of the bed base portion
bed. 5. The method of claim 4,
Wherein the bed body portion further includes a wheelchair fixing portion that is supported by the bed base portion and fixes the wheelchair portion when the first merging state and the second merging state,
When the bed main body part and the wheel chair part are combined in the first merging state and the second merging state,
The wheelchair fixing portion is moved symmetrically with respect to the longitudinal center plane of the bed base portion
bed. 6. The method according to any one of claims 1 to 5,
Wherein the wheelchair unit includes an armrest cover having an outer surface extending in the longitudinal direction of the chair bottom member
bed. The method according to claim 6,
The bed main body portion further includes a side rail holder having an outer side surface extending in the longitudinal direction of the bed main body portion,
The outer side surface of the side rail holder and the outer side surface of the armrest cover extend along the longitudinal direction of the bed main body portion when the bed main body portion and the wheel chair portion are in the first merging state or the second merging state, ≪ / RTI >
bed.

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