JP3712600B2 - bed - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention is, for example, a bed used for nursing care.ToIt is related.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a nursing bed in which the entire or part of a mattress placing portion can be tilted in the width direction of the bed has been studied. By the tilting of the mattress placing portion, the care recipient can change the body direction in the width direction.
[0003]
Japanese Laid-Open Patent Publication Nos. 1-238859 and 11-239524 disclose a bed in which divided plate-like mattress placing portions are rotatably connected by a hinge or the like. In the bed disclosed in the former publication, the mattress mounting portion is formed of a quadrangular plate divided in the longitudinal direction and the width direction, and can be tilted only in one of the longitudinal direction and the width direction. It has become. According to this bed, by tilting the mattress placing portion in the width direction with the hinge as a fulcrum, the care recipient can easily be prevented from slipping out of the bed, and the bedside and hemiplegia can be prevented. This makes it easy to correct the shoulder drop of the cared person. However, in this bed, when the mattress mounting portion is tilted in the width direction, it is impossible to tilt in the longitudinal direction at the same time.
[0004]
On the other hand, in the bed disclosed in the latter publication, for example, a triangular plate or the like is formed so that the mattress mounting portion has a dividing line inclined with respect to the longitudinal direction and the width direction. So that it is divided. These divided plate-like mattress mounting portions are connected so as to be rotatable by a hinge or the like. Thereby, the mattress mounting portion can be tilted simultaneously in the longitudinal direction and the width direction. According to this bed, in addition to the effects of the bed disclosed in the former publication, it is possible to easily change clothes, secure an airway during eating and drinking, and raise the body.
[0005]
[Problems to be solved by the invention]
However, in the bed disclosed in the latter publication, since the mattress placing portion is configured by a combination of plates, the shape of the mattress placing portion after tilting (that is, the mattress placing portion is placed on the mattress placing portion). The shape of the mattress is very uneven, and it is difficult to provide a comfortable posture to the care recipient. Furthermore, in the connection structure of the mattress mounting portions having a plate shape, there is a problem that the degree of freedom of tilting is low.
[0006]
The object of the present invention is to prevent bed slipping and to turn over, change clothes, secure the airway during eating and drinking, raise the body, correct shoulder drop of caregivers with hemiplegia, etc., and free to tilt An object of the present invention is to provide a bed that is high in degree and capable of maintaining a comfortable posture for a care recipient.
[0007]
[Means for Solving the Problems]
  In order to solve the above-described problem, the invention according to claim 1 provides a mattress placing portion.The upper body side mattress placement part, the central mattress placement part and the leg side mattress placement part to be configuredDivided beds,The upper body side mattress mounting portion includes a right mounting portion and a left mounting portion, and the right mounting portion and the left mounting portion are connected to the head mat side by a first connecting member that can be expanded and contracted and a central mattress mounting portion. The mounting portion side is connected by a support bar, and the first connection member and the support bar are connected by a plurality of second connection members that can be expanded and contracted,The right mounting part and the left mounting part areIn the support barEach actuator can be independently rotated around an axis parallel to the width direction of the bed.Support, Between the right mounting part and the left mounting partThe first connecting member and the second connecting member arranged can be tilted.The summary is as follows.
[0008]
  According to the present invention, among the mattress placement units arranged separately, the right placement unit and the left placement unit of the placement unit corresponding to the upper body side areIn the support barEach of them can be independently rotated about an axis parallel to the width direction of the bed. By this independent rotation, the mattress placed on the mattress placing portion can be inclined not only in the longitudinal direction of the bed but also in the width direction. Thereby, since it becomes possible to aim at dispersion | distribution of body pressure, it becomes possible to prevent bed slip. In addition, the inclination of the mattress in the width direction makes it easy to turn over, change clothes, secure an airway during eating and drinking, raise the body, and correct shoulder drop of a caregiver who has hemiplegia. Moreover, it arrange | positioned between the said right mounting part and the said left mounting part.First connecting member and second connecting memberIs a structure that can be expanded and contracted, so that even when the inclination angle of the right placement portion and the inclination angle of the left placement portion are different from each other, a large unevenness is formed between the right placement portion and the left placement portion. Will not be formed. Therefore, the cared person on the mattress can maintain a comfortable posture. Furthermore, since the right and left mounting portions can be rotated independently of each other by the actuator 51, the degree of freedom of tilting of the mattress is increased.
[0009]
According to a second aspect of the present invention, in the bed according to the first aspect, the control device is capable of controlling the operation of the actuator so that a difference between the rotation amounts of the right and left mounting portions is equal to or less than a predetermined amount. The main point is that
[0010]
According to the present invention, the difference between the rotation amounts of the right and left placement parts is equal to or less than a predetermined amount, so that the inclination angle of the mattress with respect to the width direction of the bed does not exceed a predetermined angle. Thereby, there is no possibility that the cared person on the mattress is excessively inclined in the width direction.
[0011]
The gist of the invention described in claim 3 is that, in the bed described in claim 1 or 2, the right and left placement portions are rotatable so as not to incline in the width direction of the bed.
[0012]
According to the present invention, the right and left placement parts do not tilt in the width direction of the bed even if they rotate. For example, when handrails are installed on the right and left mounting portions, there is no possibility that the handrails are inclined in the width direction due to the rotation.
[0013]
  The invention according to claim 4The bed as described in any one of Claims 1-3 WHEREIN: The support part which can be rotated was provided in each edge part of the said 1st and 2nd connection member.This is the gist.
  According to this invention,Each connecting member is supported by each support portion so as to be rotatable mainly in the circumferential direction of the rotation locus of each placement portion.
[0014]
  The invention according to claim 5 is the first aspect.4In the bed according to any one ofA protective cover is provided on the upper side of the first and second connecting members.This is the gist.
[0015]
  According to this invention,It is possible to prevent the lubricant or rust preventive oil applied to the first and second connecting member sides from adhering to the mattress side and to prevent the mattress side surface fabric from being caught.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the bed 11 includes a main frame 12 in which a plurality of linear frame members are joined in a substantially rectangular shape by welding or the like. At the end of the main frame 12 in the longitudinal direction, a headboard 13 and a footboard 14 are fixed to the head side and the leg side, respectively. As shown in FIG. 2, the main frame 12 is disposed on the pedestal portion 15. The main frame 12 is connected to the pedestal 15 so as to be movable up and down by a link mechanism (not shown). The pedestal portion 15 is provided with four rollers 16 (only two are shown in FIG. 2), and the pedestal portion 15 is movable.
[0017]
As shown in FIGS. 1 and 2, an upper body side mattress placing portion 21, a central mattress placing portion 22, and a leg portion side mattress placing portion 23 constituting a mattress placing portion are disposed on the upper side of the main frame 12. ing. The central mattress placing portion 22 has an outer portion having a substantially square ring shape, and the mattress placed on the central mattress placing portion 22 does not fall into an area surrounded by the outer contour portion. A mesh portion (not shown) is formed. The central mattress placement portion 22 is fixed by a support member 24 so as to be parallel to the main frame 12.
[0018]
The leg-side mattress placement unit 23 includes a first placement unit 25 and a second placement unit 26. Both mounting portions 25 and 26 have outer portions having a substantially rectangular ring shape, and mesh regions (as in the case of the central mattress mounting portion 22 described above) are provided in each region surrounded by the outer shell portions. (Not shown) is formed. The first placement portion 25 is disposed adjacent to the footboard 14 side of the central mattress placement portion 22. A stay 27 is fixed to the first mounting portion 25 on the central mattress mounting portion 22 side. The first placement portion 25 is connected to a support member 28 fixed to the main frame 12 via a stay 27 so as to be able to rotate, so that the first placement portion 25 can tilt in the longitudinal direction of the bed 11. The footboard 14 side of the first placement portion 25 is restricted from tilting downward by a stopper 29 (shown in FIG. 2) fixed to the main frame 12. Further, when the first placement portion 25 comes into contact with the stopper 29, the first placement portion 25 is parallel to the main frame 12 and is at the same height as the central mattress placement portion 22. It has become.
[0019]
The second placement unit 26 is disposed adjacent to the footboard 14 side of the first placement unit 25. A stay 30 is fixed to the second placement portion 26 on the first placement portion 25 side. The second placement portion 26 is rotatably connected to a stay 31 fixed to the footboard 14 side of the first placement portion 25 via a stay 30, thereby being able to tilt in the longitudinal direction of the bed 11. It has become. The footboard 14 side of the second placement portion 26 is supported by being in contact with a stopper bar 32 fixed to the main frame 12. In a state where the first placement portion 25 is in contact with the stopper 29, the second placement portion 26 is parallel to the main frame 12 and is at the same height as the first placement portion 25. Yes.
[0020]
Note that the leg-side mattress placing portion 23 has a connecting portion between the first placing portion 25 and the second placing portion 26 by a link mechanism (not shown) (for example, a configuration disclosed in Japanese Patent Publication No. 6-0669467). It can be raised and lowered. When the connecting portion is raised, the tip of the second placement portion 26 on the footboard 14 side approaches the stopper bar 32. Is not going to rise.
[0021]
The upper body side mattress placing portion 21 includes a right placing portion 41 and a left placing portion 42. Both mounting portions 41 and 42 have outer portions that have a substantially square ring shape, and each region surrounded by the outer shell portions has a mesh as in the case of the mattress mounting portions 22 and 23 described above. A portion (not shown) is formed. A support bar 43 is fixed to the main frame 12 on the headboard 13 side of the central mattress placement unit 22 via a support member 44 (shown in FIGS. 2 and 3). The central mattress placement portion 22 side is rotatably supported by the support bar 43. The mounting portions 41 and 42 are respectively independent on the right side and the left side of the support bar 43 (outside in the width direction of the bed 11), centering on an axis orthogonal to the longitudinal direction of the bed 11 and parallel to the width direction. And is rotatably supported. The headboard 13 side of each mounting portion 41, 42 is restricted from tilting downward by a stopper bar 45 fixed to the main frame 12. Further, when the placement portions 41 and 42 come into contact with the stopper bar 45, the placement portions 41 and 42 are parallel to the main frame 12 and are at the same height as the central mattress placement portion 22. It is like that.
[0022]
In the main frame 12, rotating shaft support stays 46 are fixed at locations corresponding to the mounting portions 41 and 42, respectively. A rotating lever 47 is rotatably supported on each rotating shaft support stay 46. Each rotation lever 47 includes first and second arm portions 48 and 49 and a rotation shaft portion 50. The first and second arm portions 48 and 49 are fixed to each other such that their proximal ends sandwich the rotating shaft portion 50 so that they cannot rotate relative to each other.
[0023]
The distal end side of the first arm portion 48 is rotatably connected to the distal end portion of the rod 52 of the actuator 51. The actuator 51 has a structure in which a motor part and a ball screw mechanism (both not shown) are built in the main body, and the rotational movement of the motor part can be converted into the reciprocating movement of the rod 52 by the ball screw mechanism. The actuator 51 is provided to be tiltable in the vertical direction with respect to the main frame 12.
[0024]
A guide rail 53 is fixed to each mounting part 41, 42. A pin 54 is fixed to the distal end side of the second arm portion 49, and this pin 54 engages with a groove formed in the guide rail 53. The pin 54 can slide in the longitudinal direction of the guide rail 53 in the groove.
[0025]
When the protruding length of the rod 52 of the actuator 51 is the shortest, the distal end side of the first arm portion 48 is closest to the main body side of the actuator 51 and the pin 54 of the second arm portion 49 is thereby arranged at the lowest position. It has come to be. At this time, each placement portion 41, 42 abuts against the stopper bar 45, is parallel to the main frame 12, and is at the same height as the central mattress placement portion 22.
[0026]
From this state, when the rod 52 of the actuator 51 is extended, the distal end side of the first arm portion 48 is moved away from the main body side of the actuator 51 and the pin 54 of the second arm portion 49 is thereby arranged at a higher position. ing. In this state, the mounting portions 41 and 42 are separated from the stopper bar 45 and tilted so that the headboard 13 side rises.
[0027]
The actuator 51 is provided separately and independently on the mounting portions 41 and 42 side, and each actuator 51 can be driven independently. That is, the mounting portions 41 and 42 can be tilted by the independent actuator 51.
[0028]
As shown in FIGS. 1 and 3, the right mounting portion 41 and the left mounting portion 42 are connected to each other by the first connecting member 60 on the headboard 13 side. In addition, in FIG. 3, illustration of the center mattress mounting part 22, the leg part mattress mounting part 23, etc. is abbreviate | omitted. The first connecting member 60 is fixed to a cylindrical portion 61, two columnar bars 62 accommodated in the cylindrical portion 61 so as to be able to reciprocate and rotate, and the mounting portions 41 and 42. In addition, each bar 62 is provided with a support portion 63 that can rotatably support the mounting portions 41 and 42. Each bar 62 is supported by each support portion 63 so as to be rotatable mainly in the circumferential direction of the rotation trajectory of each placement portion 41, 42. However, each bar 62 can be rotated. It is possible to turn slightly in the radial direction of the turning locus circle by a margin of the diameter of the hole through which the rotating shaft for supporting the rotating shaft is inserted. Further, both bars 62 can be moved close to, separated from, and relatively rotated within the cylindrical portion 61. That is, the 1st connection member 60 has a structure which can be expanded-contracted which can change the space | interval of each support part 63, etc. FIG. Each bar 62 is formed with a collar portion 64 so that the cylindrical portion 61 can be restricted from moving in the axial direction.
[0029]
The first connecting member 60 and the support bar 43 are connected by a plurality (five in this embodiment) of second connecting members 65. The second connecting member 65 includes a cylindrical portion 66. The first connecting member 60 side of the cylindrical portion 66 is connected to the first connecting member 60 so as to be rotatable by a support portion 67 fixed to the cylindrical portion 61. The rotating shaft for connecting the cylindrical portion 66 to the support portion 67 so as to be rotatable is arranged in parallel to the axial direction of the cylindrical portion 61. The cylindrical portion 66 has a diameter of a hole for inserting the rotating shaft. It is possible to tilt slightly in the direction of the rotation axis due to the margin of the rotation. A part of a columnar bar 68 is accommodated on the support bar 43 side of the cylindrical portion 66 so as to be able to reciprocate and rotate. The support bar 43 side of the bar 68 is connected to the support bar 43 so as to be rotatable by a support portion 69 fixed to the support bar 43. The rotation axis for connecting the bar 68 to the support portion 69 so as to be rotatable is arranged in parallel to the longitudinal direction of the support bar 43. The bar 68 is a margin of the diameter of the hole for inserting the rotation axis. For example, it can be tilted somewhat in the direction of the rotation axis. Therefore, the 2nd connection member 65 has a structure which can be expanded-contracted which can change the space | interval of the support part 67, and the support part 69.
[0030]
The cylindrical portion 66, the support portions 67 and 69, and the bar 68 constitute a second connection member 65, and the first connection member 60 and the second connection member 65 constitute an auxiliary support member. This auxiliary support member constitutes a part of the upper body side mattress placing portion 21.
[0031]
As a result, the right placement portion 41 and the left placement portion 42 can be placed on the placement portions 41 and 42 and the first and second connecting members 60 and 65 without applying an excessive force. The tilt angles of 41 and 42 with respect to the main frame 12 can be tilted so as to be different from each other.
[0032]
The bed 11 includes a control device 70. The control device 70 can control the drive of each actuator 51. For example, the control device 70 can grasp the amount of movement of each rod 52 based on a signal from an encoder or the like provided in each actuator 51. The control device 70 can calculate the amount of rotation of each of the mounting portions 41 and 42 based on the amount of movement of the rod 52. Further, the control device 70 can compare the rotation amounts of the mounting portions 41 and 42 and control the operation of the actuator 51 so that the difference is equal to or less than a predetermined amount. As shown in FIG. 4, the control device 70 is configured such that the inclination angle α of the first connecting member 60 with respect to the main frame 12 caused by the difference in the amount of rotation of the mounting portions 41 and 42 is less than a predetermined value (for example, 40 degrees). Thus, the operation of the actuator 51 is controlled.
[0033]
As shown in FIG. 4, a pillow 71 is placed on the mattress M placed on the mattress placement portion of the bed 11. The pillow 71 is made of, for example, ester-based urethane, and is formed such that the upper surface side becomes lower in the left-right direction toward the center as shown in FIGS. FIG. 5 is a perspective view showing a state in which a cloth cover is put on the core material of the pillow 71, and FIG. 6 is a side view of FIG. As shown in FIG. 6, a plurality of concave and convex portions are formed on the upper surface side of the core material of the pillow 71 so that the air permeability between the head portion and the head portion can be further increased.
[0034]
In the present embodiment, the following effects can be obtained.
(1) The placement portions 41 and 42 of the upper body side mattress placement portion 21 were installed so as to be independently rotatable by an actuator 51 around an axis parallel to the width direction of the bed 11. Furthermore, both mounting parts 41 and 42 were mutually connected by the 1st connection member 60 which can be expanded-contracted, and the 1st connection member 60 and the support bar 43 were connected by the 2nd connection member 65 which can be expanded-contracted. Thereby, the mattress placed on the mattress placement portion can be inclined not only in the longitudinal direction of the bed 11 but also in the width direction. Thereby, since it becomes possible to aim at dispersion | distribution of body pressure, it becomes possible to prevent bed slip. In addition, the inclination of the mattress in the width direction makes it easy to turn over, change clothes, secure an airway during eating and drinking, raise the body, and correct shoulder drop of a caregiver who has hemiplegia. In addition, since the first and second connecting members 60 and 65 disposed between the mounting parts 41 and 42 are extendable structures, even when the inclination angles of the mounting parts 41 and 42 are different from each other, Large unevenness is not formed between the mounting portions 41 and 42. Therefore, the cared person on the mattress can maintain a comfortable posture. Furthermore, since each mounting part 41 and 42 can be rotated independently from each other by the actuator 51, the degree of freedom of tilting of the mattress is increased.
[0035]
(2) The operation of the actuator 51 can be controlled by the control device 70 so that the inclination angle α of the first connecting member 60 with respect to the main frame 12 caused by the difference in the amount of rotation of the mounting portions 41 and 42 is not more than a predetermined value. I did it. Thereby, the inclination angle of the mattress in the width direction of the bed 11 does not exceed the predetermined value. Therefore, there is no possibility that the cared person on the mattress is excessively inclined in the width direction.
[0036]
(3) Both mounting portions 41 and 42 are installed so as to be rotatable about an axis parallel to the width direction of the bed 11. That is, both mounting portions 41 and 42 can be rotated so as not to incline in the width direction of the bed 11. According to this, for example, when a handrail is installed in each mounting part 41 and 42, there is no possibility that the handrail may be inclined in the width direction by the rotation.
[0037]
(4) On the mattress, the pillow 71 formed so that the upper surface side becomes lower in the left-right direction toward the center is placed. According to this, even if the mattress is inclined in the width direction (left-right direction) of the bed 11, the head of the care receiver is not easily detached from the pillow, and the head becomes more stable.
[0038]
(5) The auxiliary support member is configured by combining a plurality of rod-shaped members. Accordingly, the auxiliary support member can move smoothly in accordance with the rotation of the mounting portions 41 and 42, compared to a case where the auxiliary support member is formed of a plate material, for example. Accordingly, the degree of freedom in tilting the mattress on the mattress placement portion is increased.
[0039]
The embodiment is not limited to the above, and may be, for example, as follows.
A handrail may be provided on both mounting parts 41 and 42. For example, as shown in FIG. 4, a handrail 80 is provided on the outer side of both mounting portions 41 and 42. In this case, the mattress can be prevented from slipping, and the upper body side of the cared person on the mattress can be prevented from sliding off the bed 11. The handrail 80 is only shown in FIG. 4 and is not shown in FIGS.
[0040]
The control device 70 may be connected to a remote control unit provided with an operation button capable of operating each actuator 51 independently and an operation button capable of operating both actuators 51 simultaneously. According to this, the tilting operation of the mattress by the cared person can be easily performed. When the actuators 51 are simultaneously driven in the same direction, the operation for driving is facilitated by the operation buttons that can be operated simultaneously.
[0041]
A protective cover may be provided above the first and second connecting members 60 and 65. For example, this protective cover may cover the support portions 63, 67, 69, the vicinity of both end portions of the cylindrical portion 61, and the upper portion of the cylindrical portion 66 near the end portion on the support bar 43 side. In this case, it becomes possible to prevent the lubricant or rust preventive oil applied to the support portions 63, 67, 69 and the bars 62, 68 from adhering to the mattress side, and the first and second surface fabrics on the mattress side, etc. It is possible to prevent the second connecting members 60 and 65 from being caught.
[0042]
The control device 70 may not control the operation of the actuator 51 so that the difference between the rotation amounts of the mounting portions 41 and 42 is not more than a predetermined amount.
Each of the mounting portions 41 and 42 may be configured to tilt in the width direction of the bed 11 in addition to the tilt in the longitudinal direction of the bed 11.
[0044]
(Circle) the 1st connection member 60 side and the both mounting parts 41 and 42 side may be connected by the spherical joint. Moreover, the 2nd connection member 65 side, the 1st connection member 60 side, and the support bar 43 side may be similarly connected by the spherical joint. According to this, each connection part by the said spherical joint becomes more freely rotatable.
[0045]
In the above embodiment, the auxiliary support member is configured using a bar-shaped member having a circular cross section, but may be configured using a bar-shaped member having a rectangular cross section. The rod-shaped member having a rectangular cross section may be a flat member having greatly different vertical and horizontal dimensions in cross section.
[0046]
  Next, technical ideas other than the invention described in the claims that can be grasped from the embodiment will be described below together with the effects thereof.
  (1) saidFirst and second connecting membersComprises a plurality of extendable rod-like members.~ 5The bed according to any one of the above. In this case,First and second connecting membersCan move smoothly in accordance with the rotation of the right and left mounting portions as compared with a case where the plate is made of, for example, a plate material. Therefore, the degree of freedom of tilting of the mattress on the mattress placement portion is increased.
[0047]
  (2)PreviousThe technical idea provided with the 1st connection member which connects the counter-rotation shaft side of the right and left mounting part mutually, and the 2nd connection member which connects this 1st connection member and the said rotation shaft side. The bed described in (1).
[0048]
(3) The bed according to claim 3, wherein handrails are provided on the right and left placement portions. In this case, it is possible to prevent the mattress from slipping off, and there is no possibility that the upper body side of the cared person on the mattress slides down from the bed.
[0049]
  (4) An operation button capable of simultaneously rotating the right and left mounting portions is provided.~ 5And bed as described in any one of technical thought (1)-(3). According to this, when driving each actuator simultaneously in the same direction, the operation for the driving is facilitated by the operation button.
[0051]
【The invention's effect】
As described in detail above, according to the first to fifth aspects of the invention, bed beds can be prevented from slipping, turning over, changing clothes, securing an airway during eating and drinking, raising the body, hemiplegia This makes it easy to correct the shoulder drop of the cared person, increases the degree of freedom of tilting, and allows the cared person to maintain a comfortable posture.
[Brief description of the drawings]
FIG. 1 is a partially broken plan view schematically showing a bed according to an embodiment.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a partially omitted perspective view showing an upper body side of the bed according to the embodiment.
FIG. 4 is a schematic view showing a state where the bed is viewed from the head side.
FIG. 5 is a perspective view schematically showing the pillow (with a cover).
FIG. 6 is a side view schematically showing the pillow (with the cover removed).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Bed, 21 ... Upper body side mattress mounting part, 22 ... Center mattress mounting part, 23 ... Leg part side mattress mounting part (21, 22 and 23 comprise a mattress mounting part), 41 ... Right mounting Placement part 42 ... Left placement part 51 ... Actuator 60 ... First connection member 65 ... Second connection member (60 and 65 constitute an auxiliary support member) 70 ... Control device 71 ... Pillow 80 …handrail.

Claims (5)

A bed divided into an upper body side mattress mounting portion, a central mattress mounting portion, and a leg side mattress mounting portion constituting the mattress mounting portion, and the upper body side mattress mounting portion includes a right mounting portion and The left mounting unit includes a left mounting unit, and the right mounting unit and the left mounting unit are connected to each other by a first connecting member that can expand and contract the headboard side, and the central mattress mounting unit side is connected by a support bar. The member and the support bar are connected by a plurality of second connecting members that can be expanded and contracted , and the right mounting portion and the left mounting portion are respectively independent by an actuator around an axis parallel to the width direction of the bed in the support bar. and rotatably supported, and the first connecting member and the second connecting member disposed between said left mounting portion and said right mounting portion configured to be tiltable bed. The bed according to claim 1, further comprising a control device capable of controlling the operation of the actuator so that a difference between the rotation amounts of the right and left placement portions is equal to or less than a predetermined amount. The bed according to claim 1 or 2, wherein the right and left placement portions are rotatable so as not to incline in the width direction of the bed. The bed as described in any one of Claims 1-3 which provided the support part which can be rotated in each edge part of the said 1st and 2nd connection member. The bed as described in any one of Claims 1-4 which provided the protective cover above the said 1st and 2nd connection member .

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