JP6722868B2 - bed - Google Patents

Description

The present invention relates to a bed in which a wheelchair unit and a bed body unit are united.

As a technology that facilitates the movement (transfer) between the wheelchair and the bed or the assistance of the caregiver for this movement by patients who have difficulty walking or the elderly (hereinafter referred to as cared persons), A bed for care has been proposed in which a wheelchair having a backrest and a seating surface is combined with the bed body to form the entire bed surface (see Patent Documents 1 and 2).

Registered utility model No. 3169742 JP, 2011-115487, A

In a bed for nursing care in which a conventional wheelchair and a bed main body are united, the head side direction and the foot side direction in the longitudinal direction of the bed are fixed due to at least the structure of the wheelchair part. The moving direction for separating the wheelchair from the bed main body is fixed to either the right hand direction or the left hand direction of the cared person for each individual bed.

However, there is a demand in the market for beds in which the wheelchair can leave in either direction. Each type of bed may be selected according to the care recipient's preference, or may be selected depending on the shape of the room in which the bed is installed and the arrangement of other furniture. Further, depending on the incapacitated part of the cared person, it may be selected because it is difficult or dangerous to move the body in a certain direction.

Manufacturers who are trying to meet such market demands need to manufacture both types of nursing care beds of the conventional structure and put them on the market or manufacture them according to orders, which increases the manufacturing cost. However, there were problems such as difficulty in determining demand and inventory adjustment of products or parts, and longer delivery time.

In addition, when the caregiver who uses such a bed everyday moves or moves to another room, consider not only the size of the bed but also the direction in which the wheelchair part can be separated from the bed body. There was the inconvenience of having to.

Therefore, the present invention provides a bed in which the left and right positions of the wheelchair part and the bed body part can be interchanged.

A bed according to an aspect of the present invention has a substantially rectangular plate-like shape, and includes a bed main body bottom member that can be bent and stretched in the longitudinal direction, and a bed main body that supports the bed main body bottom member. And a wheelchair part having a substantially rectangular plate-like shape and including a chair bottom member that can be bent and stretched in the longitudinal direction, wherein the bed body part and the wheelchair part are of the bed body bottom member. A first united state in which one side along the longitudinal direction and one side along the longitudinal direction of the chair bottom member face each other substantially parallel to form a flush bed surface, and the other side along the longitudinal direction of the bed main body bottom member The chair bottom member has a structure capable of being selectively combined in a second combined state in which the other side along the longitudinal direction of the chair bottom member faces in parallel with each other to form a flush bed surface.

In the bed according to the present invention, the left and right positions of the wheelchair and the bed main body can be interchanged, and each individual having the same configuration can be used for left and right.

FIG. 1 is a perspective view of the bed according to the first embodiment in a state where the beds are combined in one usage mode. FIG. 2 is a perspective view of the bed in the first embodiment, which is separated in one usage mode. FIG. 3 is a perspective view of the bed according to the first embodiment, which is separated in another usage mode. FIG. 4 is an exploded perspective view of the bed main body portion in one usage mode of the bed according to the first embodiment. FIG. 5 is an exploded perspective view of a bed body portion in another usage mode of the bed according to the first embodiment. FIG. 6 is a perspective view of the bed according to the second embodiment in a state where the beds are combined in one usage mode. FIG. 7A is a plan view of a base portion in one usage mode of the bed according to the second embodiment. FIG. 7A is a plan view of a base portion in another usage mode of the bed according to the second embodiment. FIG. 8A is a perspective view of the wheelchair in the first and second embodiments. FIG. 8B is a front view of the wheelchair in the first and second embodiments. FIG. 9 is a front view of the bed in the first and second embodiments.

Hereinafter, embodiments of the present invention will be described. It should be noted that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement of constituent elements, connection forms, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Among the constituent elements in the following embodiments, the constituent elements that are not described in the independent claims showing the highest concept are described as arbitrary constituent elements.

It should be noted that each drawing used in the following description is a schematic view, and does not accurately show the shape or size relationship of each constituent element. Further, illustration of elements that may be included in the configuration of the bed according to the present disclosure but are unnecessary for the technical description of the present disclosure may be omitted. Common components in a plurality of figures are denoted by the same reference numerals, and description thereof may not be repeated.

(Embodiment 1)
[1. Constitution]
[1-1. Overview]
First, an outline of the bed in the first embodiment will be described with reference to FIGS. 1 to 3.

1 and 2 are perspective views of the bed 10 according to Embodiment 1 as viewed from the same direction. The bed 10 includes a bed body portion 100 and a wheelchair portion 200, and the bed body portion 100 and the wheelchair portion 200 can be separated. In FIG. 1, the bed body 100 and the wheelchair unit 200 are not separated, that is, in a combined state, and in FIG. 2, the bed body unit 100 and the wheelchair unit 200 are separated. Translation of the wheelchair unit 200 along the illustrated z-axis causes the bed 10 to transition between the combined state shown in FIG. 1 and the separated state shown in FIG. In the figure, an arrow T1 indicates a moving direction for separating the wheelchair unit 200 from the bed main body 100, and an arrow T2 indicates a moving direction for the wheelchair unit 200 to unite with the bed main body 100 (the same applies hereinafter). In addition, in the bed 10, the bed body 100, and the wheelchair unit 200 shown in FIGS. 1 and 2, it is necessary to place the foot in the positive direction of the x-axis and the head in the negative direction when viewed from the center of each. It is the proper position of the caregiver's body.

[1-2. Bed body overview]
Next, the outline of the bed body 100 will be described.

The bed body 100 includes a bed body bottom member 110, a body support member 120a, a knee support member 120c, a leg support member 120d, a bed base 150, and a wheelchair fixing unit 180.

The bed body bottom member 110 is a substantially rectangular plate-shaped member that supports the body of the care-receiver. The substantially rectangular shape referred to here may be a long shape having a length suitable for the bed, and for example, each side may not be a straight line, and the corners may be rounder than the illustrated shape. In addition, the plate shape here may be a substantially flat shape, and each surface may have irregularities such as the top surface shown in the figure (the surface facing the positive direction of the y-axis, the same applies below), There may be holes. A cushion member (not shown) such as a futon or a mattress may be further placed on the top surface during use, and the bed body bottom member 110 may support the care-receiver via the cushion member. In the present embodiment, the bed main body bottom member 110 includes five plate-shaped members arranged in the longitudinal direction (back bottom member 110a, waist bottom member 110b, knee bottom member 110c, leg bottom member 110d, and foot bottom member 110e. ) Is included, the two adjacent ones are rotatably connected about a common axis so that the bed main body bottom member 110 can be bent and extended in the longitudinal direction.

The upper body support member 120a, the knee support member 120c, and the leg support member 120d illustrated in FIG. 2 are a part of a plurality of support members (hereinafter also collectively referred to as the support member 120) included in the bed main body 100. Details of each will be described later with reference to another drawing. The support member 120 is supported by the bed base portion 150 and also supports the bed body bottom member 110.

In addition, the support member 120 is movable by including at least one link mechanism (not shown) formed by combining a plurality of beams, shafts, etc., and additionally, an electric motor for moving or locking the link mechanism. It is possible to deform the bed main body bottom member 110 into a bent predetermined shape or to support the bed main body bottom member 110 while maintaining the predetermined shape. Note that, instead of the electric actuator, a mechanism that can be locked in a predetermined state may be included.

Furthermore, when the bed main body 100 and the wheelchair unit 200 are in a combined state, the chair bottom member 210, which will be described later, is also supported in the extended state and the bent predetermined shape. Arrows M11 and M12 in FIG. 1 show examples of the bending directions of the bed body bottom member 110 and the chair bottom member 210 when the bed body 100 and the wheelchair unit 200 are in a combined state. As a result, the bed 10 provides the care receiver with support for the backrest and the vicinity of the thigh. In a medical or nursing care setting, such a function of the bed 10 reduces the physical burden on the cared person and the cared person, and improves the comfort and safety of the cared person.

In addition, the support member 120 deforms the bed body bottom member 110 into a predetermined shape as described above, so that the bed 10 provides functions such as raising the back and raising the knee to assist the care receiver in getting up. In this case, the bed 10 further includes a controller (not shown) for controlling the operation of this actuator. Such a function also reduces the physical burden on the cared person and the caregiver. This actuator will be described later by showing an example in another drawing.

The bed base 150 supports the entire bed including the bed main body bottom member 110 and the support member 120 described above, and the wheelchair unit 200 in a state of being combined with the bed main body 100. Further, the wheelchair fixing part 180 is supported by the bed base part 150, and when the bed main body part 100 and the wheelchair part 200 are united, it is fixed so as to restrict unnecessary movement of the wheelchair part 200 in the z-axis direction. .. This is one of safety mechanisms for preventing the wheelchair part 200 from being abruptly separated from the bed body part 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 lateral center plane) that passes through the center in the longitudinal direction (direction along the x axis in the drawing). Further, in each drawing, the wheels mounted on the bed base 150 are arranged at positions asymmetrical with respect to the lateral center plane of the bed base 150, but they may be arranged symmetrically.

In addition, members such as a headboard, a footboard, and side rails (all not shown) may be attached to the bed main body 100 in order to improve convenience and safety for the cared person. For example, the side rails may be attachable to and detachable from the side rail holders 190a and 190b provided on the bed base 150 as shown in FIG. The side rail holders 190a and 190b are a part of the side rail holders included in the bed base 150, and side rail holders 190c and 190d are further provided on the opposite side surfaces where the side rail holders 190a and 190b are provided (hereinafter, referred to as "side rail holders 190c and 190d"). The side rail holders 190a to 190d are also collectively referred to as side rail holders 190). The siderail holders 190c and 190d are shown in other drawings that will be referred to later.

[1-3. Wheelchair overview]
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 care-receiver. The meanings of the substantially rectangular shape and the plate shape here are the same as the shape of the bed main body bottom member 110. Note that the chair bottom member 210 may support the care-receiver via a cushion member (not shown) during use. In the present embodiment, the chair bottom member 210, like the bed main body bottom member 110, has five plate-like members arranged in the longitudinal direction (back bottom member 210a, waist bottom member 210b, knee bottom member 210c, leg bottom member in order). The chair bottom member 210 includes a member 210d and a foot bottom member 210e), and two adjacent members are rotatably connected about a common axis so that the chair bottom member 210 can be bent and stretched in the longitudinal direction.

The wheelchair base 250 is a frame structure that is a combination of a plurality of beams, shafts, and the like, supports the chair bottom member 210, and is an electric actuator for moving or locking the link mechanism, or Equipped with pneumatic or hydraulic cylinders. As a result, even if the chair bottom member 210 is separated from the bed body 100 as shown in FIG. 2, the chair bottom member 210 is deformed into a bent predetermined shape or is supported while maintaining the predetermined shape. be able to. Note that, instead of the electric actuator, a mechanism that can be locked in a predetermined state may be included. Arrows M21 to M23 in FIG. 2 indicate examples of the bending direction of the chair bottom member 210 in the wheelchair unit 200 due to this bending and stretching. The chair bottom member 210 bends in this way, and the chair for providing the care receiver with a backrest, a seat surface, a foot support, and the like for functioning as a wheelchair from an extended shape for supporting the care recipient who is lying down. It can change in shape. 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.

The wheelchair unit 200 further includes a controller (not shown) for controlling the operation of this actuator. As a result, the caregiver can transform the wheelchair unit 200 from a flat posture to a chair posture without using force.

In addition, the wheelchair base part 250 includes wheels 230a and 230b for enabling the wheelchair part 200 to move. The wheels 230a and 230b are a part of wheels included in the wheelchair base 250, and further include wheels 230c and 230d (hereinafter, the wheels 230a to 230d are also collectively referred to as wheels 230). Wheels 230c and 230d are shown in other figures referenced below.

In addition, the wheelchair unit 200 further includes an armrest 290L and an armrest 290R (hereinafter collectively referred to as armrest 290) that extend in the x-axis direction at a position that sandwiches the waist bottom member 210b and the knee bottom member 210c in the plan view. Prepare Both the armrest 290L and the armrest 290R are longitudinally located at a position lateral to the seat surface of the wheelchair unit 200, in the present embodiment, in a position from the waist bottom member 210b to the knee bottom member 210c of the chair bottom member 210 in plan view. It has an elongated shape that extends along it.

The armrests 290 each include an armrest top 290a and an armrest cover 290b. However, in FIG. 2, most of the armrest 290L is hidden, and only a small part of the armrest top 290a of the armrest 290L is shown.

The armrest 290 can move up and down (direction along the illustrated y-axis). FIG. 2 shows the armrest 290 in the lowest position. For example, when the wheelchair unit 200 is in a united state with the bed body unit 100, for example, it is lowered to a height at which the armrest top 290a does not interfere with the bed body bottom member 110 and the chair bottom member 210 that are parallel in the longitudinal direction to form the bed surface. .. When the wheelchair unit 200 is in the separated state from the bed body unit 100, the armrest 290 is moved upward from this position as indicated by the arrow M24U, and the top surface of the armrest top 290a is moved to a predetermined height, for example, the wheelchair unit 200. It is fixed by raising it so that it is located at a height near the elbows of the care recipient who sits down. The armrest 290 will be described later.

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

[1-4. Overview of combined state of bed body and wheelchair part]
When the bed body portion 100 and the wheelchair portion 200 are in a united state, as shown in FIG. 1, one side along the longitudinal direction of the bed body bottom member 110 and one side along the longitudinal direction of the chair bottom member 210 are substantially parallel to each other. opposite. At this time, in the bed body 100 and the wheelchair unit 200, more specifically, the top surface of the bed body bottom member 110 and the top surface of the chair bottom member 210 are flush with each other. The back bottom member 110a is a back bottom member 210a, the waist bottom member 110b is a waist bottom member 210b, the knee bottom member 110c is a knee bottom member 210c, the leg bottom member 110d is a leg bottom member 210d, and the foot bottom member 110e. Is parallel to the foot bottom member 210e.

Here, in the bed 10 separated from the combined state shown in FIG. 1 to the separated state shown in FIG. 2, the chair bottom member 210 is the bed main body bottom member when viewed from the care receiver who lies on the bed surface at an appropriate position. Located to the right of 110. Therefore, in order to transfer the cared person to the wheelchair unit 200, the carer moves the cared person from the bed rest state to the right hand direction of the cared person.

Furthermore, the bed 10 according to the present embodiment can be used in such a mode as shown in FIG. 3 in which the cared person is moved from the bed rest state to the left hand direction in order to transfer the cared person to the wheelchair unit 200. FIG. 3 is a perspective view of the bed body portion 100 and the wheelchair portion 200, which have been prepared for being combined for this mode of use, as viewed from the same direction as FIGS. 1 and 2.

Comparing FIG. 3 with FIG. 2, in the state shown in FIG. 3, the wheelchair unit 200 as a whole is shown in FIG. 2 because of the orientation of the chair bottom member 210 and the difference between the wheels 230 and the armrests 290 seen in front of the wheelchair base unit 250. It can be seen from the state shown in (1) that the image is rotated 180 degrees in the horizontal direction (around the y-axis). On the other hand, in the bed body 100, the orientation of the bed base 150 has not changed, but the bed body bottom member 110 has rotated 180 degrees in the horizontal direction from the state shown in FIG. Therefore, in the bed 10 in which the bed body portion 100 and the wheelchair portion 200 are united from this state shown in FIG. 3, the above-described juxtaposition of each member of the bed body bottom member 110 and each member of the chair bottom member 210 is maintained. ing. On the other hand, the left and right positions of the bed main body bottom member 110 and the chair bottom member 210 are changed from the state shown in FIG. In the bed 10 in this combined state, the caregiver moves the care receiver from the bed rest state to his/her left hand direction and transfers the care receiver from the bed body 100 to the wheelchair unit 200.

As described above, the bed body 100 and the wheelchair unit 200 of the bed 10 are flush with each other, with one side along the longitudinal direction of the bed body bottom member 110 and one side along the longitudinal direction of the chair bottom member 210 facing each other substantially in parallel. The united state forming the bed surface (hereinafter, also referred to as the first united state) and the other side along the longitudinal direction of the bed body bottom member 110 and the other side along the longitudinal direction of the chair bottom member 210 face each other substantially in parallel. It is a structure capable of being selectively combined in a combined state (hereinafter also referred to as a second combined state) forming a flush bed surface. 2 and 3, the bed main body 100 and the wheelchair unit 200, one of which is prepared so that the above-described first combined state is possible, and the other is the above-mentioned second combined state, in association with the drawings. It can be said that the bed main body portion 100 and the wheelchair portion 200 thus prepared are shown.

In addition, in the bed 10 in the present embodiment, in both the first combined state and the second combined state, the bed body bottom member 110 and the chair bottom member 210 are bent and extended to assist the care receiver such as the back raising. Function can be provided. In the next section, the configuration of the bed main body 100 that can provide these functions even when the left and right positions of the bed main body bottom member 110 and the chair bottom member 210 are interchanged in this way will be described.

[2. Detailed configuration of bed body]
4 is an exploded perspective view of the bed main body 100 in the assembled state shown in FIG. 2, and FIG. 5 is an exploded perspective view of the bed main body 100 in the assembled state shown in FIG. Both FIG. 4 and FIG. 5 are views of the bed main body 100 viewed from substantially the same direction as FIGS. 1 to 3. 4 and 5 show the disassembled state of the bed main body 100 in which one of the bed main body 100 and the wheelchair unit 200 is assembled so as to be in the first combined state described above. It can be said that the other shows the disassembled state of the bed main body 100 that is assembled so that the above-mentioned second combined state is possible. Note that the alternate long and short dash line arrows included in FIGS. 4 and 5 indicate the approximate attachment positions of the constituent elements for changing the bed main body 100 from the disassembled state to the assembled state. The details will be described in the description of each component of the bed main body 100 that follows. Note that FIG. 2 or FIG. 3 is also referred to as appropriate in order to describe the arrangement of components in the assembled state.

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 central support member 120b is also one of the support members 120 that is supported by the bed base 150 and supports the bed body bottom member 110. These support members 120 can be disassembled, and the upper body support member 120a, the center support member 120b, the knee support member 120c, and the leg support member 120d are arranged and assembled in this order along the longitudinal direction of the bed body bottom member 110. However, in FIGS. 4 and 5, the central 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 120c, and the central support member 120b are rotated. The mounting positions of the leg support members 120d correspond to each other.

The central support member 120b in the present embodiment is a structure in which a plurality of beams, shafts, and the like are connected, and supports the back bottom member 110a directly and via an upper body support member 120a described later, and will be described later. The knee bottom member 110c and the leg bottom member 110d are supported via the knee support member 120c. When the bed main body 100 and the wheelchair unit 200 are in a combined state, the central support member 120b has a back bottom member 210a via the upper body support member 120a and a knee bottom member 210c via the knee support member 120c. The leg bottom member 210d is further supported. As can be seen by comparing FIGS. 4 and 5, the mounting position of the central support member 120b is the same in the assembled state for the first combined state and the assembled state for the second combined state ( Arrow A1).

Further, the center support member 120b includes an actuator 140a (see FIG. 4) and an actuator 140b (see FIG. 5).

The actuator 140a is connected to, for example, one of the link mechanisms of the support member 120, or is moved as a part of the link mechanism, so that the bed main body bottom member 110 and the chair bottom member 210 are separated from each other via the upper body support member 120a. Bend and stretch in the longitudinal direction. For example, the bending in the direction indicated by the arrow M11 in FIG. 1 is a part of this bending and stretching operation. That is, the actuator 140a is a mechanism for providing a back raising function at one end side in the x-axis direction. Such an actuator 140a in the present embodiment is an example of the first bending and stretching mechanism.

The actuator 140b is connected to another one of the link mechanisms included in the support member 120, or is moved as a part thereof to move the bed main body bottom member 110 and the chair bottom member 210 via the knee support member 120c, respectively. Bend and stretch in the longitudinal direction. For example, the bending in the direction indicated by the arrow M12 in FIG. 1 is a part of this bending and stretching operation. That is, the actuator 140b is a mechanism for realizing the knee raising function on one end side opposite to the side where the actuator 140a provides the back raising function in the x-axis direction. Such an actuator 140b in the present embodiment is an example of the second bending and stretching mechanism.

The center support member 120b having such a structure is provided in the bed base when the bed body 100 and the wheelchair unit 200 are combined in the first combined state and when they are combined in the second combined state. It is symmetrically moved with respect to the horizontal center plane of the portion 150. As a result, in the bed 10, as shown in FIGS. 2 and 3, even if the bed body bottom member 110 and the wheelchair unit 200 are rotated 180 degrees in the horizontal direction, a function such as raising the back is provided to the care receiver. The actuator can be installed in the correct orientation. Further, regarding the work of switching between the first combined state and the second combined state, the change to the relatively complicated and heavy central support member 120b including the actuator is performed only by rotation at the same mounting position. The simplification and load reduction are achieved. Such a central support member 120b in the present embodiment is an example of a second support member.

The upper body supporting member 120a in the present embodiment is a long beam, and is attached to one end side of the central supporting member 120b in the x-axis direction in the assembled state of the bed body 100 (arrow A2), and the back bottom member 110a. Support. Further, when the bed body 100 and the wheelchair unit 200 are in a united state, the upper body support member 120a further supports the back bottom member 210a of the wheelchair unit 200. The bed base 150 is supported via the central support member 120b described above, and when the bed main body bottom member 110 is in an extended state, it is further directly supported at both ends in its longitudinal direction ( 2 and 3).

The position indicated by the arrow A2 is a movable part of the link mechanism that is moved by the actuator 140a, and the body support member 120a is moved up and down by the operation of the actuator 140a. The back raising function of the bed 10 is realized by the body support member 120a moving up and down while supporting the back bottom member 110a and the back bottom member 210a. Such a body support member 120a in the present embodiment is an example of the first support member.

The knee support 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 body 100, the shaft portion of the hinge is upward (the positive direction of the y-axis), and one beam is located at one end side in the x-axis direction of the central support member 120b to which the upper body support member 120a is attached. To the opposite one end side (arrow A3), and the other beam is attached to one end side of the leg support member 120d described later in the x-axis direction (arrow A4). Accordingly, the knee support member 120c is located below and supports the knee bottom member 110c and the leg bottom member 110d, and the shaft portion of the hinge is located below the connecting portion between the knee bottom member 110c and the leg bottom member 110d. To do. When the bed body 100 and the wheelchair unit 200 are in a united state, the knee support member 120c further supports the knee bottom member 210c and the leg bottom member 210d of the wheelchair unit 200, and the hinge shaft portion has the knee bottom member 210c. And the leg bottom member 210d is also located below the connecting portion. The knee support member 120c is indirectly supported by the bed base 150 via the center support member 120b and the leg support member 120d.

The position indicated by the arrow A3 is a movable part of the link mechanism that is moved by the actuator 140b, and the knee support member 120c is moved by the operation of the actuator 140b and the slide of the leg support member 120d on the bed base 150 in the x-axis direction. The hinge opens and closes. The function of raising the knee of the bed 10 is that the shaft portion of the hinge of the knee support member 120c, which is lifted by closing the hinge, connects the knee bottom member 110c and the leg bottom member 110d, the knee bottom member 210c, and the leg bottom member 210d. It is realized by pushing up the connection part of. Such a knee bottom member 110c in the present embodiment is an example of a part of the third support member.

The leg support member 120d in the present embodiment is a structure in which a plurality of beams are connected so as to form a substantially rectangular shape. In the assembled state of the bed main body portion 100, the bed bottom portion 110d and the foot bottom member 110e are positioned below (arrow A5) and supported by the bed base portion 150 (see FIGS. 2 and 3), and the leg bottom member 110d and The foot bottom member 110e is supported. Such leg supporting member 120d in the present embodiment is an example of another part of the third supporting member.

Regarding the positions of the upper body support member 120a (first support member) and the knee bottom member 110c and the leg support member 120d (third support member) having such a configuration, the bed main body portion 100 and the wheelchair portion 200 are in the first position. When they are united in the united state and when they are united in the second united state, they are symmetrically moved with respect to the lateral center plane of the bed base 150.

In addition, the bed body bottom member 110 is oriented symmetrically with respect to the lateral center plane of the bed base 150 after the positional relationship between the support member 120 and the bed base 150 is changed as described above. It is placed on the support member 120 (arrow A6). Then, the wheelchair part 200 moves symmetrically with respect to the lateral center plane of the bed base part 150, moves in parallel in the direction along the z-axis, and is united with the bed body part 100.

In this way, the left and right positions of the bed body bottom member 110 and the chair bottom member 210 are interchanged, and the positional relationship between the bed body bottom member 110 and the support member 120 before and after this interchange is the x of the bed body bottom member 110. It is symmetric with respect to the axial center plane. Further, in any of the combined state before and after the replacement, the movement of the link mechanism due to the operation of the support member 120 and the actuator 140 is similarly transmitted to the chair bottom member 210 by the upper body support member 120a and the knee bottom member 110c. That is, the care-receiver is provided with a function such as raising the back regardless of the left-right positional relationship between the bed body 100 and the wheelchair unit 200. Further, regarding the work for switching between the first combined state and the second combined state, the target of position replacement with respect to the base portion 15 is a relatively light first supporting member and third supporting member that does not include an actuator. By doing so, the load is reduced.

[3. effect]
The bed 10 in the present embodiment has a substantially rectangular plate-like shape, and includes a bed main body bottom member 110 that can be bent and stretched in the longitudinal direction, and a bed base portion 150 that supports the bed main body bottom member 110. The main body portion 100 and the wheelchair portion 200 having a substantially rectangular plate-like shape and including a chair bottom member 210 capable of bending and stretching in the longitudinal direction are provided. A first combined state in which one side along the longitudinal direction of the bottom member 110 and one side along the longitudinal direction of the chair bottom member 210 face each other substantially in parallel to form a flush bed surface, and the longitudinal direction of the bed body bottom member 110. Has a structure in which the other side along the longitudinal direction of the chair bottom member 210 and the other side along the longitudinal direction of the chair bottom member 210 face each other substantially in parallel and form a flush bed surface so that they can be selectively combined.

Thereby, for example, a maker or a supplier of the bed 10 can selectively replace the bed main body 100, the wheelchair 200, and the left and right positions in the bed 10 having the same components. Further, even when the user moves to another location, in bed 10, the direction in which the wheelchair can be separated is not a condition for selecting the destination of the user. In addition, the disposition of the wheelchair does not limit the arrangement of the bed 10 at the destination or the need to replace the bed 10 with another.

Specifically, for example, the bed main body part 100 is further supported by the bed base part 150 and supports the bed main body bottom member 110, and the first support members 120a are arranged in order along the longitudinal direction of the bed main body bottom member 110. , The second support member 120b, and the third support members 120c and 120d. The second support member 120b is in the first united state via the first support member 120a, and is in the second united state the third support member 120c. A first bending/extending mechanism 140a for bending and extending the bed body bottom member 110 along the longitudinal direction of the bed body bottom member 110 via 120d is provided, and the bed body portion 100 and the wheelchair portion 200 are combined in the first combined state. The second support member 120b, the bed main body bottom member 110, and the wheelchair part 200 move symmetrically with respect to the lateral center plane of the bed base part 150 depending on whether it is in the second combined state or in the second combined state. ..

Thus, for example, when the bed 10 formed by combining the bed body 100 and the wheelchair unit 200 has a back-raising function, the first body for the back-raising function is required when the left and right positions of the bed body 100 and the wheelchair unit 200 are interchanged. The direction of the bending and stretching mechanism 140a can be easily changed.

Alternatively, the bed main body 100 is further supported by the bed base 150, and supports the bed main body bottom member 110. The first support member 120a and the second support member 120a are arranged in order along the longitudinal direction of the bed main body bottom member 110. 120b and third support members 120c and 120d, and the second support member 120b bends and extends the bed body bottom member 110 along the longitudinal direction of the bed body bottom member 110 via the first support member 120a. The bending/extending mechanism 140a and the second bending/expanding mechanism 140b for bending/extending the bed main body bottom member 110 along the longitudinal direction of the bed main body bottom member 110 via the third support members 120c and 120d are provided, and the bed main body 100 and the wheelchair are provided. The second support member 120b, the first support member 120a, the third support members 120c and 120d, and the time when the unit 200 is combined in the first combination state and when the unit 200 is combined in the second combination state. The wheelchair unit 200 may move symmetrically with respect to the lateral center plane of the bed base unit 150.

Thereby, for example, when the bed 10 has a back raising function and a knee raising function, when the left and right positions of the bed body 100 and the wheelchair unit 200 are switched, the first bending mechanism 140a for the back raising function and the knee raising function are provided. It is possible to easily change the direction of each of the second bending and stretching mechanism 140b.

(Embodiment 2)
[1. Overview]
The configuration that allows the left and right positions of the bed body portion and the wheelchair portion to be interchanged is not limited to the above configuration. The bed 1010 according to the present embodiment includes a wheelchair part and a bed body part whose left and right positions are interchangeable, including a base part having a configuration different from that of the first embodiment.

FIG. 6 is a perspective view showing the appearance of the entire bed 1010 in the present embodiment. The appearance of bed 1010 and the operations indicated by arrows M11 and M12 in the figure are the same as the appearance and operation of bed 10 shown in FIG. Further, the wheelchair unit, the bed body bottom member, and the support member included in the bed 1010 are also common to the wheelchair unit 200, the bed body bottom member 110, and the support member 120 of the first embodiment, and therefore the description and drawings thereof will be omitted. The description of Embodiment 1 and FIGS. 2 to 5 will be replaced, and will not be repeated here. The bed main body included in the bed 1010 is basically the same as the bed main body 100 of the first embodiment in the appearance of the assembled state, and the detailed configuration of the bed base is different from the bed base 150. The configuration of the bed base portion 1150 of the bed 1010 will be described below.

[2. Bed base structure]
7A and 7B are plan views of the bed base portion 1150 according to the second embodiment.

The components of the bed base portion 1150 shown in FIGS. 7A and 7B are basically the same as those of the first embodiment. Here, constituent elements not described with reference to FIGS. 1 to 5 will be described. In addition, in the bed base 1150 shown in FIGS. 7A and 7B, it is an appropriate position of the cared person to place his/her feet in the positive direction of the x-axis and the head in the negative direction when viewed from the center. It is supposed.

The rectangular area A11 indicated by the alternate long and short dash line shown in FIGS. 7A and 7B is the position of the central supporting member 120b in the bed base 1150, that is, the mounting position of the central supporting member 120b (hereinafter referred to as the mounting position A11 of the central supporting member 120b. ) Is shown. In the present embodiment, unlike the first embodiment, there is no bracket-shaped member that supports the central support member 120b, and the central support member 120b is supported by the bed base portion 1150 in a mode different from that of the first embodiment. For example, the central support member 120b includes a hook (not shown), and the hook is attached to the beam forming the bed base portion 1150 so as to be supported by the bed base portion 1150.

In addition, the rectangular area A21 indicated by the alternate long and short dash line is located at a position where the wheelchair base 250 of the wheelchair unit 200 in the state of entering the bed main body 100 and being fixed thereto is fixed in the traveling direction indicated by the arrow T2 (hereinafter, wheelchair unit 200 is abbreviated). Fixed position A21).

The bed base beam 170 is a beam-shaped member that extends in the longitudinal direction of the bed base portion 1150 (the direction along the x axis in the drawing), and has a rigidity for supporting a large load including the bed 1010 and the care receiver. Is for connecting the head side and the leg side of the bed base 150. Therefore, in this embodiment, the bed base beam 170 is 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 base beam 170 and extends from the mounting position A11 of the central support member 120b to the fixing position A21 of the wheelchair part 200 in a plan view. At the start of separation from the bed body 100, the wheelchair unit 200 is in a state where the armrest 290 is lowered (see FIG. 6). If the wheelchair unit 200 on which the care receiver is placed is moved in this state, the care receiver may fall. In order to reduce this risk, if the wheelchair part 200 is moved in the direction in which the armrest 290 is lowered (the direction of arrow T1) from the bed body part 100, the lower end part of the armrest 290 (in this example, the armrest 290L) is moved. The U-shaped portion of the wheelchair stopper 175 (the portion located in the fixed position A21) hits the concave portion so that the movement of the wheelchair portion 200 is restricted so that it cannot be separated. When the armrest 290 is raised to such an extent that the lower end portion does not hit the wheelchair stopper 175, this regulation is released. The wheelchair unit 200 can be moved and separated in a safe state in which the armrest 290 prevents the care receiver from falling.

2 to 5, only one wheelchair fixing unit 180 is visible, but as shown in FIGS. 7A and 7B, the wheelchair fixing unit 180 is provided at both ends in the x-axis direction of the fixing position A21 of the wheelchair unit 200.

In the bed base part 1150 shown in FIG. 7A and the bed base part 1150 shown in FIG. 7B, the wheelchair fixing part 180 and the bed base beam 170 are arranged in the lateral direction of the bed base part 1150 (in the z-axis shown in the figure). 7A and 7B (broken line in FIGS. 7A and 7B, hereinafter also referred to as a vertical center plane) that is symmetric with respect to a plane parallel to the xy plane that passes through the center. As a result, in the bed base portion 1150, the attachment position A11 of the central support member 120b and the fixed position A21 of the wheelchair portion 200 can be exchanged. The wheelchair fixing unit 180 and the bed base beam 170 are fixed to the bed base unit 1150 with, for example, screws, so that they can be worn and removed.

That is, with this configuration, the fixed position of the wheelchair unit 200 moves symmetrically with respect to the vertical center plane of the bed base unit 1150. Further, the central support member 120b (second support member) can be attached to a position symmetrically moved with respect to the longitudinal center plane of the bed base 1150 and supported by the bed base 1150. Accordingly, the bed body 100 and the wheelchair 200 can be selectively combined in the first combined state and the second combined state as described above. Regarding the movement of the wheelchair part 200 in the first combined state and the second combined state, in comparison with the first embodiment, in the first embodiment, the movement of the wheelchair part 200 with respect to the lateral center plane of the bed base part 150 is performed. The movement is symmetrical, but in the present embodiment, the movement is symmetrical with respect to the vertical center plane of the bed base portion 1150.

In addition, the wheelchair fixing unit 180 is configured so that the bed main body unit 1150 is vertically aligned when the bed main body unit 100 and the wheelchair unit 200 are combined in the first combined state and when they are combined in the second combined state. It moves symmetrically with respect to the center plane. As a result, regardless of whether the bed main body 100 and the wheelchair unit 200 are in the first combined state or the second combined state, the occurrence of abrupt separation of the wheelchair unit 200 is suppressed.

Further, the position and extension direction of the wheelchair stopper 175 are also changed with the movement of the bed base beam 170. Accordingly, the wheelchair stopper 175 can function as described above regardless of which state the bed body 100 and the wheelchair 200 are separated from.

The above-described change of the positions of the wheelchair fixing unit 180 and the bed base beam 170 is realized by the following configuration, for example. It is assumed that the bed base beam 170 and the wheelchair fixing unit 180 are fixed to the bed base unit 1150 with screws. In this case, the bed base 1150 is provided with screw holes for fixing these components at positions symmetrical with respect to the vertical center plane of the bed base 1150. Accordingly, the bed base beam 170 and the wheelchair fixing unit 180 can be fixed in any of symmetrical arrangements with respect to the longitudinal center plane of the bed base unit 1150.

The configuration for fixing the wheelchair fixing unit 180 and the bed base beam 170 to the bed base unit 1150 is not limited to the one using screws. For example, the wheelchair fixing unit 180 and the bed base beam 170 may include brackets, and the brackets may be hooked on the beams of the bed base unit 1150 to insert the retaining pins.

The support members 120 other than the central support member 120b are moved according to the position of the central support member 120b. For example, in the case of FIG. 7A, the upper body support member 120a, the knee support member 120c, and the leg support member 120d are assembled in the same manner as in FIG. In the case of FIG. 7B, the upper body support member 120a, the knee support member 120c, and the leg support member 120d are assembled in the same manner as in FIG. The reason why the knee support member 120c is symmetrical with respect to the longitudinal center plane of the bed base portion 1150 is as follows (see FIGS. 2 to 5). This is a design for keeping the hinge away from the edge of the bed so that the care receiver or the caregiver does not easily pinch the fingers put under the bed body bottom member 110 from around the bed with the hinge.

As described above, in the bed 1010 according to the present embodiment, as in the bed 10 according to the first embodiment, the bed main body portion 100 and the wheelchair portion 200 before delivery are interchangeable in left and right positions. In addition, in the bed 1010 according to the present embodiment, for example, even in a place where the bed 1010 is not swung after the start of use, the position of the care recipient (the position of the head and the foot) can be changed for transfer without changing the position. The direction can be changed, and the route of the wheelchair unit 200 for being combined with the bed body unit 100 can be changed.

Note that the bed base beam 170, the wheelchair stopper 175, and the wheelchair fixing portion 180, which are described above as the components that symmetrically move with respect to the vertical center plane of the bed base portion 1150, are given as examples. Bed base 1150 may not include all of these components. Depending on the design, for example, the bed base beam 170 and the wheelchair stopper 175 may be symmetrical with respect to the vertical center plane of the bed base portion 1150 from the beginning. Such components are not included in the movement target. Further, the bed base portion 1150 may further include a component other than the above components that can be moved symmetrically.

[3. effect]
In the bed 1010 according to the present embodiment, the bed main body 100 is supported by the bed base 1150 and supports the bed main body bottom member 110. The first support is arranged in order along the longitudinal direction of the bed main body bottom member 110. Including the member 120a, the second support member 120b, and the third support members 120c and 120d, the bed body 100 and the wheelchair unit 200 are combined in the first combined state and in the second combined state. The second support member 120b and the wheelchair unit 200 are symmetrically moved with respect to the vertical center plane of the bed base unit 1150 when the bed base unit 1150 is being used.

With this, as in the bed 10 in the first embodiment, the left and right positions of the bed main body portion 100 and the wheelchair portion 200 can be selectively switched in the bed 1010 having the same constituent elements.

The bed body 100 further includes a wheelchair fixing portion 180 that is supported by the bed base portion 1150 and fixes the wheelchair portion 200 when in the first combined state and in the front two combined state. When 100 and the wheelchair unit 200 are united in the first united state and when they are united in the second united state, the wheelchair fixing unit 180 is positioned with respect to the vertical center plane of the bed base unit 1150. You may move symmetrically.

As a result, in the bed 1010, even if the left and right positions of the bed main body portion and the wheelchair portion are exchanged, a safety mechanism that prevents the wheelchair portion 200 from being abruptly separated from the bed main body portion 100 can function.

(Other)
[1. Armrest]
As described above, in the wheelchair unit 200, the armrest 290 includes the armrest top 290a and the armrest cover 290b. When the wheelchair part 200 is separated from the bed body part 100, the armrest 290 is raised to a predetermined height and used. 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. When the wheelchair unit 200 is in the united state with the bed body unit 100, the armrest 290 is moved downward from the position shown in FIGS. 8A and 8B as shown by an arrow M24D to form a predetermined height, for example, a bed surface. Therefore, the bed main body bottom member 110 and the chair bottom member 210 which are parallel to the longitudinal direction can be lowered to a height that does not interfere with them. Note that arrows M21 to M23 indicate an example of the bending direction of the chair bottom member 210 as in FIGS. 2 and 3.

The armrest top 290a is gripped by a care receiver who stands up from the wheelchair unit 200 or is seated on the wheelchair unit 200 for supporting the body, and the side of the wheelchair unit 200 of the care receiver who sits on the wheelchair unit 200 (see FIG. It also prevents falling in the middle z-axis direction).

The armrest cover 290b has an outer side surface and an inner side surface extending along the longitudinal direction of the chair bottom member 210. As shown in FIGS. 8A and 8B, when the armrest 290 is in the position for use, the armrest 290a forms a wall that sandwiches the seating surface (the waist bottom member 210b and the knee bottom member 210c) under the armrest top 290a in the z-axis direction. As a result, it is possible to prevent the belongings such as the care recipient's towel or a part of the care recipient's body, such as the knees and thighs, from protruding from the seat surface of the wheelchair unit 200 under the armrest top 290a. For example, a leg protruding outward from the outer surface of the armrest 290 may lead to injury to a care receiver or a surrounding person when colliding with an obstacle in the path of the wheelchair unit 200. However, depending on the cared person, the lower limbs cannot be moved freely and may shift to the left or right abruptly. The armrest cover 290b functions as a safety mechanism that regulates such leg movement.

[2. Side line]
Furthermore, the outer surface of the side rail holder 190 and the outer surface of the armrest cover 290b of the bed body 100 are the bed body when the bed body 100 and the wheelchair unit 200 are in the first combined state or the second combined state. It may be configured to form an integral line extending in the longitudinal direction of section 100. This line is also shown in a state where the bed body 100 and the wheelchair unit 200 shown in FIG. 1 are combined, but the point of being integrated will be further described using the example shown in FIG. 9.

FIG. 9 is a front view of the bed 10 in which the bed main body portion 100 and the wheelchair portion 200 are combined. The side rail holder 190 has an outer surface that extends along the longitudinal direction of the bed body 100. In this figure, the line L1 that the side rail holder 190a has on the outer side surface, the line L2 that the armrest cover 290b has on the outer side surface, and the line L3 that the side rail holder 190b has on the outer side surface are both in the x-axis direction shown below. The state of being on one virtual straight line along the arrow is an example of the above-mentioned "form an integral line". More specifically, lines L1 to L3 shown in the figure are recesses (grooves) provided along the same straight line provided on the outer side surfaces of the side rail holder 190 and the armrest cover 290b.

With such a line, for example, a caregiver who has passed near the bed 10 has the armrest 290 stored at an appropriate position (height), and the bed body 100 and the wheelchair 200 are properly combined. You can easily see what is going on.

Although lines L1 to L3 are shown as grooves in FIG. 9, lines L1 to L3 are not limited to this. The lines L1 to L3 may be, for example, convex portions extending along the same straight line, may be lines of a color that is easily visible, or may be a combination of concave portions or convex portions and a color. Good. Further, the line does not have to extend over the entire length of the bed 10 as shown in FIG. For example, referring to FIG. 9, there are recesses only in the right half of L1 and the left end of L2, and in the left half of L3 and the right end of L2, and the bed body 100 and the wheelchair 200 are properly combined. In some cases these recesses may be along the same straight line. The appearance of the lines may be different between the left and right sides of the bed 10. As a result, when the bed body that can be combined with the wheelchair is located in multiple places such as at home and in a nursing facility, or in a hospital room, an examination room, or a treatment room, the positional relationship between the wheelchair and the bed body is left and right. Can be easily grasped. Further, such an integrated line may be provided on each top surface of the armrest top 290a and the side rail holder 190. Thereby, the care receiver and the care giver can easily confirm whether or not the bed main body portion 100 and the wheelchair portion 200 are properly combined by looking from above.

In addition, modes obtained by making various modifications to those skilled in the art by those skilled in the art, and components and functions in each of the embodiments may be arbitrarily combined without departing from the spirit of the present invention, or one of these The present invention also includes a form realized by not including the section.

For example, the bed 10 may not have the function of raising the knee. That is, the function provided by bending and stretching the bed body bottom member 110 and the chair bottom member 210 may be only raising the back.

In this case, the support member 120 does not have to include the link mechanism for raising the knee and the actuator 140b (second bending and stretching mechanism). In the support member 120, the upper body support member 120a (first support member), the knee support member 120c, and the leg support member 120d (third support member) are the bed body portion 100 in the assembled state of the bed body portion 100. The configuration may be symmetrical with respect to the lateral center plane of the. For example, both the first support member and the third support member have a non-movable structure such that the hinge of the knee support member 120c in the third support member is replaced with a beam. The central support member 120b (second support member) is supported by the bed base portion 150 in a direction symmetrically moved with respect to the lateral center plane of the bed base portion 150 in the first combined state and the second combined state. The points are the same as those in the first embodiment. On the other hand, the first bending mechanism of the central support member 120b bends and extends the bed body bottom member 110 for raising the back through the first support member in the first combined state, and the third support in the second combined state. The bed body bottom member 110 is bent and stretched for raising the back through the members. That is, unlike the first embodiment, in this case, the positional relationship between the first support member and the bed base 150 of the third support member cannot be interchanged.

Further, in this case, the bed main body bottom member 110 may be configured by a member corresponding to the back bottom member 110a that is lifted for raising the back and two members other than the member. In this case, the bed body bottom member 110 is supported by the support member 120 in a direction symmetrically moved with respect to the lateral center plane of the bed base 150, as in the first embodiment. Alternatively, the bed main body bottom member 110 may be composed of three members, a member whose longitudinal ends correspond to the back bottom member 110a, and a member which connects these two members between them. In this case, the bed body bottom member 110 is supported in a positional relationship with the bed base 150 in a direction symmetrically moved with respect to the lateral center plane of the bed base 150 in the first combined state and the second combined state. It may be supported by member 120 but need not be rotated. It should be noted that the bed body bottom member 110 including five members as in the first embodiment may be used.

Further, when the bed body 100 or the wheelchair unit 200 includes a component other than the above, this component is used in the first combined state and the second combined state of the bed main body 100 and the wheelchair unit 200 as necessary. The position on the base 150 or the wheelchair base 250 may be changed. For example, a mechanism including an actuator for moving the entire bed 10 up and down, a controller for controlling each actuator described above and wiring thereof, cables for supplying power to the actuator and charging a battery, and the like are movable constituent elements. Is appropriately arranged in a position that does not hinder the movement of each of the combined states, or in a position that is easy for the cared person or the carer to use.

[3. effect]
As described above, in the bed 10 and the bed 1010 in each of the above-described embodiments, the wheelchair unit 200 may include the armrest cover 290b having the outer surface extending along the longitudinal direction of the chair bottom member 210.

As a result, it is possible to prevent the caregiver's belongings and part of his/her body from protruding or slipping off from the seating surface of the wheelchair unit 200. As a result, it is possible to avoid interference with obstacles on the path of the wheelchair unit 200.

Further, the bed main body 100 further includes a side rail holder 190 having an outer side surface extending along the longitudinal direction of the bed main body, and the bed main body 100 and the wheelchair unit 200 are in a first combined state or a second combined state. In the above, the outer surface of the side rail holder 190 and the outer surface of the armrest cover 290b may form an integral line extending along the longitudinal direction of the bed body 100.

Accordingly, it is possible to easily visually confirm whether the armrest 290 is stored at an appropriate position (height) and whether the bed body 100 and the wheelchair 200 are properly combined.

10, 1010 bed 100 bed body 110 bed body bottom member 110a, 210a back bottom member 110b, 210b waist bottom member 110c, 210c knee bottom member 110d, 210d leg bottom member 110e, 210e foot bottom member 120 support member 120a upper body support Member (first support member)
120b Central support member (second support member)
120c knee support member (third support member)
120d leg support member (third support member)
140a Actuator (first bending and stretching mechanism)
140b Actuator (second bending and stretching mechanism)
150, 1150 Bed base part 170 Bed base beam 175 Wheelchair stopper 180 Wheelchair fixing part 190, 190a, 190b, 190c, 190d Side rail holder 200 Wheelchair part 210 Chair bottom member 230, 230a, 230b, 230c, 230d Wheel 250 Wheelchair Base part 290, 290L, 290R Armrest 290a Armrest top 290b Armrest cover

Claims (6)

A bed main body portion having a substantially rectangular plate shape, and a bed main body bottom member capable of bending and stretching in the longitudinal direction, and a bed base portion supporting the bed main body bottom member,
A wheelchair part including a chair bottom member having a substantially rectangular plate shape and capable of bending and stretching in the longitudinal direction,
The bed main body portion and the wheelchair portion form a flush bed surface in which one side along the longitudinal direction of the bed main body bottom member and one side along the longitudinal direction of the chair bottom member face substantially parallel to each other. Select between a combined state and a second combined state in which the other side along the longitudinal direction of the bed body bottom member and the other side along the longitudinal direction of the chair bottom member face each other in substantially parallel to form a flush bed surface. Has a structure that can be integrated
The bed main body part is further supported by the bed base part and supports the bed main body bottom member. The first support member, the second support member, and the second support member are arranged in order along the longitudinal direction of the bed main body bottom member. Including 3 support members,
The second support member extends the bed body bottom member through the first support member in the first united state and the third support member in the second united state, and extends the bed body bottom member in the longitudinal direction of the bed body bottom member. With a first bending and stretching mechanism that bends and stretches along the direction,
When the bed main body portion and the wheelchair portion are combined in the first combined state and when they are combined in the second combined state,
The second support member, said bed body bottom member, and the wheelchair unit, you are symmetrically moved with respect to the transverse center plane of the bed base portion
Baie head. A bed main body portion having a substantially rectangular plate shape, and a bed main body bottom member capable of bending and stretching in the longitudinal direction, and a bed base portion supporting the bed main body bottom member,
A wheelchair part including a chair bottom member having a substantially rectangular plate shape and capable of bending and stretching in the longitudinal direction,
The bed main body portion and the wheelchair portion form a flush bed surface in which one side along the longitudinal direction of the bed main body bottom member and one side along the longitudinal direction of the chair bottom member face substantially parallel to each other. Select between a combined state and a second combined state in which the other side along the longitudinal direction of the bed body bottom member and the other side along the longitudinal direction of the chair bottom member face each other in substantially parallel to form a flush bed surface. Has a structure that can be integrated
The bed main body part is further supported by the bed base part and supports the bed main body bottom member. The first support member, the second support member, and the second support member are arranged in order along the longitudinal direction of the bed main body bottom member. Including 3 support members,
The second support member, via the first support member, a first bending mechanism for bending and extending the bed body bottom member along the longitudinal direction of the bed body bottom member, and via the third support member, A second bending mechanism for bending the bed main body bottom member along the longitudinal direction of the bed main body bottom member,
When the bed main body portion and the wheelchair portion are combined in the first combined state and when they are combined in the second combined state,
Said second support member, the first support member, said third supporting member, and the wheelchair unit, it is symmetrically moved with respect to the transverse center plane of the bed base portion
Baie head. A bed main body portion having a substantially rectangular plate shape, and a bed main body bottom member capable of bending and stretching in the longitudinal direction, and a bed base portion supporting the bed main body bottom member,
A wheelchair part including a chair bottom member having a substantially rectangular plate shape and capable of bending and stretching in the longitudinal direction,
The bed main body portion and the wheelchair portion form a flush bed surface in which one side along the longitudinal direction of the bed main body bottom member and one side along the longitudinal direction of the chair bottom member face substantially parallel to each other. Select between a combined state and a second combined state in which the other side along the longitudinal direction of the bed body bottom member and the other side along the longitudinal direction of the chair bottom member face each other in substantially parallel to form a flush bed surface. Has a structure that can be integrated
The bed main body part is further supported by the bed base part and supports the bed main body bottom member. The first support member, the second support member, and the second support member are arranged in order along the longitudinal direction of the bed main body bottom member. Including 3 support members,
When the bed main body portion and the wheelchair portion are combined in the first combined state and when they are combined in the second combined state,
The second support member and the wheelchair unit, it is symmetrically moved with respect to the longitudinal center plane of the bed base portion
Baie head. The bed body further includes a wheelchair fixing part that is supported by the bed base part and that fixes the wheelchair part when in the first combined state and in the second combined state,
When the bed main body portion and the wheelchair portion are combined in the first combined state and when they are combined in the second combined state,
The bed according to claim 3 , wherein the wheelchair fixing portion is symmetrically moved with respect to a vertical center plane of the bed base portion. The bed according to any one of claims 1 to 4 , wherein the wheelchair part includes an armrest cover having an outer side surface extending along the longitudinal direction of the chair bottom member. The bed body further includes a side rail holder having an outer surface extending along the longitudinal direction of the bed body,
When the bed body portion and the wheelchair portion are in the first combined state or the second combined state, the outer surface of the side rail holder and the outer surface of the armrest cover are arranged in the longitudinal direction of the bed body portion. A bed according to claim 5 , which forms an integral line extending along it.

Images