JP2001204587A - Bed device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed device such that a floor panel can be raised from its back and tilted in its cross direction by means of one drive mechanism. SOLUTION: The bed device includes a base frame 1, a tilt frame 31 formed to be tiltable along the cross direction of the base frame, the floor panel 81 formed on the tilt frame such that at least the portion of the floor panel corresponding to the upper torso of the user is formed into a back-raising floor part 86 rotatable in a rising direction from an approximately horizontal condition, and the drive mechanism 41 for driving the back-raising floor part to raise it and for tilting the tilt frame in its cross direction while keeping the back-raising floor part in an approximately horizontally lowered position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed apparatus suitable for a user who has difficulty in raising his / her upper body or turning over on his own.

[0002]

2. Description of the Related Art For example, when a user of a bed apparatus is a sick person or an elderly person with a physical disability, he / she may not be able to raise his / her upper body by himself to eat or read on the bed apparatus. When receiving care such as changing clothes or wiping the body, the caregiver turns the body sideways to make it easier for the caregiver to take care of himself, or turns over and brings the body closer to the caregiver. You may not be able to do it.

[0003] Therefore, for such a user, a back-raising function for raising a part of the floor plate body to raise the upper body, and tilting the floor plate in the width direction to allow the user to assist himself or a caregiver. Bed apparatuses have been developed that have a tilting function for facilitating the body to rotate in the lateral direction by having the bed apparatus rotate.

[0004] The back-raising function is such that a part of the floor plate of the bed device is formed as a back-raising floor provided on a bed frame so as to be able to rise and fall, and the back-raising floor is driven up and down by a back-raising drive mechanism. The user's upper body can be raised.

[0005] The tilting function is to provide a floor plate so as to be tiltable in the width direction of the bed frame, tilt the floor plate in the width direction by a tilting mechanism, and tilt the user's body along with the floor plate in the lateral direction. Thus, the caregiver can easily change the lateral direction of the user's body.

[0006]

Conventionally, in order to be able to raise the user's upper body and change the lateral direction, as described above, a back raising mechanism and a tilting mechanism are used. A drive mechanism had to be provided.

Each drive mechanism has a drive source for driving the mechanism. For this reason, the provision of this mechanism may cause the structure of the bed apparatus as a whole to be complicated and large, and the provision of two driving sources may cause a significant increase in cost.

An object of the present invention is to provide a bed apparatus in which a back-raising mechanism and a tilting mechanism are integrated so that both mechanisms can be driven by one drive source.

[0009]

According to a first aspect of the present invention, there is provided a base frame, a tilting frame provided to be tiltable along a width direction of the base frame, and at least an upper body of a user provided to the tilting frame. A portion corresponding to a floor plate formed on a back-raising floor rotatable in an ascending direction from a substantially horizontal state, and raising and lowering the back-raising floor and lowering the back-raising floor substantially horizontally. And a drive mechanism for tilting the tilting frame in the width direction in a state where the bed is tilted.

According to a second aspect of the present invention, the tilting direction of the tilting frame, which is tilted by the driving mechanism, is such that one end in the width direction is raised and the other end is lowered, or the other end is raised. 2. The bed device according to claim 1, further comprising a switching mechanism for switching to any one of the directions in which the bed is lowered.

According to a third aspect of the present invention, the drive mechanism is formed in a hollow shape with a drive source provided on the tilting frame, a slide shaft slidably provided along a width direction of the tilting frame. A back-raising shaft rotatably fitted to the slide shaft and rotatably driven by the driving source; a base end rotatably connected to both axial ends of the back-raising shaft; A pair of back raising arms located on the lower surface of the base, and a base end fixed to the back raising shaft, and when the back raising shaft rotates in a predetermined direction, the back raising arm is interlocked to raise the back raising floor. A pair of interlocking members for raising in the direction, and a pair of tilting arms having a base end rotatably connected to both ends of the back-raising shaft and a front end abutting against a receiving portion provided on the base frame side. , The back raising axis of the slide axis Either one is pressed by the interlocking member according to the sliding position of the slide shaft when the back lifting shaft provided at both ends protruding from both ends in the axial direction rotates in the direction opposite to the predetermined direction. A pair of pressing members for rotating one of the pair of tilting arms downward and tilting the tilting frame in the width direction by a reaction in which a tip end portion thereof is pressed against the receiving portion. The bed apparatus according to claim 1 or 2.

According to a fourth aspect of the present invention, the switching mechanism includes:
An operating member is provided for selecting one of the pair of pressing members that rotates the tilt arm downward in conjunction with the rotation of the interlocking member by sliding the slide shaft. A bed apparatus according to claim 3.

According to the first and third aspects of the present invention, one driving mechanism can be used to perform the up-and-down driving of the back-raising floor portion and the tilting drive in the width direction of the tilting frame provided with the floor plate. it can.

According to the second and fourth aspects of the present invention, the direction in which the user's body is tilted can be changed by switching the tilting direction of the tilting frame by the switching mechanism.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a bed apparatus according to an embodiment of the present invention. The bed apparatus has a base frame 1. In this base frame, four rod members 2 are connected in a rectangular shape by a connecting member 3.
Each connecting member 3 is provided with a caster 4 to make the base frame 1 movable.

The connecting member 3 is formed with a connecting portion 5 projecting upward, and the connecting portion 5 is provided with an upper and lower frame 10 via a vertical driving mechanism 11.

The vertical drive mechanism 11 has a drive source 12. The drive source 12 is provided with a drive shaft 13 that is driven forward and backward along the axial direction. The tip of the drive shaft 13 is pivotally attached to a bracket 15 provided at an intermediate portion of the interlocking rod 14. One end and the other end of the interlocking rod 14 are pivotally attached to a first arm 17 provided at an intermediate portion of the rotation shafts 16a and 16b, respectively.

A second bracket 18 is provided at an intermediate portion of the first arm 17 at a predetermined angle to the first arm 17 with respect to the circumferential direction of the rotating shaft 16a. The drive source 12 is rotatably mounted on the bracket 18. The end of the interlocking rod 14 is pivotally connected to the other first arm 17 via an interlocking member 20.

One end of a second arm 19a is fixed to both ends of one rotating shaft 16a, and an intermediate portion of the second arm 19a is fixed to both ends of the other rotating shaft 16b.
The other end of each of the second arms 19a and 19b is rotatably connected to a connecting portion 5 provided on the connecting member 3 of the base frame 1 by a pin (not shown).

Therefore, the drive shaft 1 is driven by the drive source 12.
3 is driven in the protruding direction, the interlocking rod 14 moves in the direction of the arrow, whereby the pair of rotary shafts 16a, 16
b rotates in the direction indicated by the arrow in the figure, and the second arms 19a and 19b are interlocked with the rotation.

The vertical frame 10 is vertically driven by the vertical drive mechanism 11. The upper and lower frames 10 are formed by connecting four rod members 21 in a rectangular frame shape by a connecting member 22. A pair of receiving members 23 are provided at predetermined intervals in a longitudinally intermediate portion of the pair of long rod members 21. The receiving member 23 is formed by bending a plate material into a crank shape, and one end located inside the upper and lower frames 10 is a horizontal receiving portion 24.

Connecting brackets 25 are respectively provided on the outer ends of the pair of elongated rod members 21 in the longitudinal direction with respect to the receiving members 23, and the connecting brackets 25 are tilted outwardly in the longitudinal direction, respectively, to be described later. A support bracket 27 having a support shaft 26 for tiltably supporting the frame 31 is provided.

The upper and lower frames 10 are connected to one pair of connecting brackets 25 provided at one end in the longitudinal direction.
A rotating shaft 16a provided on one second arm 19a.
And the other pair of connecting brackets 25 is rotatably connected to a pipe member 29 provided at the end of the other second arm 19b.

Therefore, the driving source 1 of the vertical drive mechanism 11
The drive shaft 13 is driven by the drive shaft 2 and a pair of rotary shafts 16 are driven.
When a and 16b are driven to rotate in the direction of the arrow, the pair of arms 19a and 19b rotate in the upright direction, whereby the upper and lower frames 10 are driven in the ascending direction.

As shown in FIG. 1, on the outer surfaces of a pair of long rod members 21, support members 28 for supporting side fences (not shown) in a standing state are provided at predetermined intervals in the longitudinal direction.

As shown in FIGS. 1 and 2, the tilting frame 31 is formed by a band-shaped member 32 into a rectangular frame having substantially the same size as the upper and lower frames 10. A pair of connecting members 34 each having an arcuate engaging hole 33 formed on both sides of both ends in the longitudinal direction of the tilting frame 31 are provided with one end fixed.

The arc-shaped engaging hole 3 of each pair of connecting members 34
3 is curved inward in the width direction of the tilting frame 31. The support shaft 26 provided on the support bracket 27 of the upper and lower frames 10 is provided in the engagement hole 33 of each connection member 34.
Are slidably engaged. Thus, the tilting frame 31 can be tilted in both the width direction one end side and the other end side with respect to the upper and lower frames 10.

A mounting rod 35 is provided along the width direction of the tilting frame 31 at an intermediate portion in the longitudinal direction. A bracket 36 is provided in the middle of the mounting rod 35,
The bracket 36 has a drive mechanism 4 serving both as a back-raising drive for raising and lowering a back-raising floor portion 86 of a floor plate body 81, which will be described later, and for tilting the tilt frame 31 in the width direction.
One drive source 42 is provided. As shown in FIGS. 6A and 6B, the drive source 42 includes a motor 42a and a drive unit 42b driven by the motor 42a.

The drive section 42b is provided with a drive shaft 43, which is driven to advance and retreat in the axial direction. The tip of the drive shaft 43 is
Is pivotally mounted on a bracket 45 provided in the middle of the bracket. The back raising shaft 44 is formed in a hollow shape as shown in FIG. 3, and a slide shaft 46 is inserted therein so as to be rotatable and slidable in the axial direction. This slide shaft 4
4 and 5, both ends are rotatably supported by first saddle brackets 47 provided on inner surfaces on both sides of the tilting frame 31 in the middle in the longitudinal direction.

At both ends of the back-raising shaft 44, interlocking members 51 are provided with their base ends fixedly attached. A pressing tongue piece 52 is integrally formed on the outer surface of the distal end portion of the interlocking member 51.

As shown in FIGS. 3 to 5, a pair of collars 53a and 53b are rotatably fitted to the back raising shaft 44 at both ends axially outward of the interlocking member 51, respectively. I have. The base end of the back-raising arm 55 is connected and fixed to one of the pair of collars 53a located on the inner side in the axial direction.
The base end of the tilt arm 56 is fixed.

The base end of the back raising arm 55 is located above the pressing tongue piece 52 of the interlocking member 51, and a pair of back raising rollers 57 are rotated at a predetermined interval at the distal end as shown in FIG. It is provided as possible.

As shown in FIG. 2, a pair of second saddle-shaped brackets 58 are spaced apart from the first saddle-shaped bracket 47 at a predetermined interval in the longitudinally intermediate portion of the inner surface of the tilting frame 31. Is provided. A driven shaft 59 whose both ends are rotatably supported is mounted on the pair of second saddle brackets 58. At both ends of the driven shaft 59, leg raising arms 61 are fixedly provided at their base ends. Outside these leg raising arms 61, base ends of a second tilting arm 62 are rotatably connected. Have been. A roller 63 is rotatably provided at the tip of the leg raising arm 61.

Each of the two first and second tilting arms 56 and 6
A tilting roller 64 is rotatably provided at each of the two ends. Each tilting roller 64 is connected to the upper and lower frames 10.
Abuts on the receiving portion 24 of each receiving member 23 provided at the first position.

The distal ends of the first tilt arm 56 and the second tilt arm 62 located at one end and the other end in the width direction of the tilt frame 31 are connected by interlocking links 65, respectively. Thus, the second tilt arm 62 is interlocked with the rotation of the first tilt arm 56 at one end and the other end in the width direction of the tilt frame 31.

As shown in FIGS. 3 to 5, a base end of an interlocking arm 66 is connected to an end of the slide shaft 46 protruding from the bracket 47 so as to be rotatable and non-slidable in the axial direction. . At the distal end of the interlocking arm 66, a pressing shaft 67 as a pressing member having an axis extending along the width direction of the tilting arm 31 is provided so as to connect the base end.

The pressing shaft 67 is provided with a bush 68 provided through the middle of the first tilting arm 56.
Is rotatably and slidably inserted. Press shaft 67
The tip end protruding from the bush 68 is located below the pressing tongue piece 52 of the interlocking member 51 in accordance with the sliding of the slide shaft 46.

That is, as shown in FIG. 3, when the width direction of the tilting frame 31 is the X direction,
Is slid in the −X direction, and a pair of interlocking arms 66 connected to both ends of the slide shaft 46 are interlocked, so that the distal end of the pressing shaft 67 located on the + X direction side presses one of the interlocking members 51. It is located below the tongue piece 52 and opposed.
Conversely, when the slide shaft 46 is slid in the + X direction,
The pressing shaft 67 located on the −X side is the other interlocking member 51.
Is positioned below the pressing tongue piece 52.

The pressing shaft 67 is pressed by the pressing tongue piece 52 when the interlocking member 51 rotates downward by the rotation of the back lifting shaft 44. When the pressing shaft 67 is pressed by the pressing tongue piece 52, the pressing shaft 67 is displaced downward while rotating the interlocking arm 66 downward. Thereby, the first tilt arm 5 into which the pressing shaft 67 is inserted
6 pivots downward with the base end as a fulcrum, and the second tilt arm 62 is linked to this.

The tilting roller 64 provided at the tip of the first and second tilting arms 56 is in contact with the receiving portion 24 of the receiving member 23 provided on the upper and lower frames 10.

Accordingly, the first and second tilting arms 56 and 62 on one end side (+ X direction) of the tilting frame 31 in the width direction.
Is rotated downward, one end in the width direction of the tilting frame 31 rises due to the reaction, so that the tilting frame 31 is higher at one end in the width direction with respect to the upper and lower frames 10,
The other end will be inclined lower. That is, the tilting frame 31 tilts in the width direction.

When the slide shaft 46 is slid to rotate the first and second tilt arms 56 and 62 at the other end in the width direction downward, the other end in the width direction of the tilt frame 31 is raised by the reaction. Therefore, the tilting frame 56 can be tilted in a direction opposite to the previous direction.

As shown in FIGS. 3 and 4, one end of a link 71 is pivotally attached to both ends of the slide shaft 46, respectively. The other end of the link 71 is pivotally attached to a projection 73 extending from a base end of an operation lever 72 as an operation member. The base end of the operation lever 72 is connected to a first saddle-shaped bracket 4 provided on the inner surface of the tilting frame 31.
The tongue piece 74 (shown in FIG. 3) protruding from the inner surface of the
5, the tip of which protrudes outward in the width direction of the tilting frame 31.

Therefore, when the operation lever 72 at one end in the width direction of the tilting frame 31 is rotated in the direction of the arrow as shown by the chain line from the state shown by the solid line in FIG. 3, the slide shaft 46 is moved in the + X direction of FIG. Can be slid to

By returning the operation lever 72 at one end in the width direction of the tilting frame 31 from the state shown by the dashed line in FIG. 3 to the state shown by the solid line, or by operating the operation lever 72 at the other end in the width direction, the slide shaft is moved. 46 can be slid in the -X direction.

That is, the operating lever 72 slides the slide shaft 46 so that one of the pair of pressing shafts 67 is selectively pressed by the pressing tongue piece 52 of the interlocking member 51.
And a switching mechanism for switching the tilting direction of the tilting frame 31 so as to be opposed to.

As shown in FIG. 1, the tilt frame 31
The floor plate 81 described above is placed on the top. The floor plate 81 is divided into a plurality of floors. That is, the floor plate body 81 has the fixed floor portion 82 fixed to the longitudinal center portion of the tilting frame 31. A first leg floor 83 and a second leg floor 84 are sequentially rotatably connected to one side of the fixed floor 82, and a waist floor 85 and a back raising floor 86 are provided on the other side.
Are sequentially rotatably connected. A bendable mattress M indicated by a chain line in FIG. 8 is placed on the upper surface of the floor plate 81, and the user lies on the mattress M.

A pair of back raising rollers 57 provided on the back raising arm 55 is provided with a rail member 90 (FIG. 8) provided on the lower surface of the back raising floor 86 along the longitudinal direction of the floor plate body. ) So as to be able to roll. A roller 63 provided on the leg raising arm 61 is in contact with the lower surface of the first leg floor 83.

An intermediate portion of a holding member 88 (shown in FIG. 1) having a wire bent substantially in a U-shape is rotatably engaged and held on the lower surface of the second leg floor portion 84. This holding member 88
Are rotatably supported at one longitudinal end of the tilting frame 31. Therefore, as described later, the first
When the second leg floor portion 84 rotates in the ascending direction and the second leg floor portion 84 rises in conjunction therewith, the raised state is held by the holding member 88 as shown in FIG.

When the drive source 42 is operated to drive the drive shaft 43 forward and backward in the axial direction, the drive shaft 43 rotates the back raising shaft 44. When the back-raising shaft 44 rotates, the interlocking member 51 having a base end fixed to the back-raising shaft 44 is interlocked. Since the lower surface of the middle part of the back raising arm 55 is opposed to the upper surface of the pressing tongue piece 52 of the interlocking member 51, the back raising arm 55 is also raised by driving the interlocking member 51 in the ascending direction. Rotate in the direction.

As a result, the back floor portion 86 of the floor plate 81 rotates in the rising direction, so that the user's upper body can be raised.

When the back raising arm 55 rotates, the leg raising arm 61 is interlocked with the rotation. That is, as shown in FIGS. 6A and 6B, the arm 55 and the leg raising arm 61 are connected by the interlocking means 91. The interlocking means 91 includes a first tongue piece 92a provided on the back raising shaft 44, a first end rotatably connected to the first tongue piece 92a.
And a second interlocking member 93 whose one end is rotatably connected to a second tongue piece 93a provided on the driven shaft 59. The other ends of the first interlocking member 92 and the second interlocking member 93 are slidably engaged with each other, and a stopper 94 is provided.
It can be fixed so that it cannot slide.

The first interlocking member 92 is moved by the stopper 94.
And the other end of the second interlocking member 93 are fixed so as not to be slidable.
The leg raising arm 61 does not interlock with the movement of.

That is, when the back floor portion 86 is raised and lowered,
Whether or not to interlock the first and second leg floors 83 and 84 can be selected by the stopper 94.

Next, the usage of the bed apparatus having the above configuration will be described.

FIG. 8 shows a state in which the back raising floor 86 of the floor plate 81 is raised in order to raise the upper body of a user (not shown) who is lying on the mattress M. Raised floor 86
In order to raise the drive shaft, the motor 42a of the drive source 42 is operated to drive the drive shaft 43 in the forward direction.

When the drive shaft 42 is driven, the bracket 4
Since the back-raising shaft 44 rotates in the direction indicated by the arrow in FIG. 4 via 5, the pair of interlocking members 51 interlock with this rotation.
That is, the interlocking member 51 rotates in the ascending direction.

When the interlocking member 51 rotates in the ascending direction, the base end portion is rotatably connected to the back-raising shaft 44 and the intermediate portion is positioned on the upper surface of the pressing tongue piece 52 integrated with the interlocking member 51. The raising arm 55 rotates in the rising direction. Therefore, the back raising roller 57 provided on the back raising arm 55
The raised floor portion 86 of the floor plate body 81 with which is engaged rises from the horizontal state in the ascending direction.

At this time, if the first interlocking member 92 and the second interlocking member 93 are fixed so as not to be slidable by the stopper 94 of the interlocking means 91, the rotation of the back raising floor portion 86 is raised by the first leg floor. Since the portion 83 and the second leg floor 84 are linked, the user's leg can be lifted.

When the fixed state of the first interlocking member 92 and the second interlocking member 93 by the stopper 94 is released, even if the back raising floor 86 is turned up, the first leg floor 83 can be moved. And the second leg floor 84 do not interlock, so that only the upper body of the user can be raised without lifting the legs.

FIGS. 7A and 7B show a state where the floor plate 81 is tilted in the width direction. In order to tilt the floor plate 31, the tilt frame 31 on which the floor plate 31 is placed is driven. For example, when tilting the tilting frame 31 from a state where the back raising floor 86 is raised, first, the drive source 42 is operated to drive the drive shaft 43 in the backward direction. As a result, the interlocking member 51 rotates in the falling direction, so that the back raising arm 55 works in conjunction therewith, and the back raising floor 86 rotates in the falling direction.

When the drive shaft 43 is further driven in the retreating direction from the state in which the back-raising floor portion 86 has fallen substantially horizontally, one end (the tilting frame) in which the distal end portion is opposed to the lower surface of the pressing tongue piece 52 of the interlocking member 51. The pressing shaft 67 is pressed downward by the pressing tongue piece 52.

When the pressing shaft 67 is pressed downward, one of the first tilting arms 56 through which the pressing shaft 67 is inserted.
From a substantially horizontal state as shown in FIG.
2B, the second tilt arm 62 provided at one end in the width direction of the tilt frame 31 is interlocked with the rotation by the interlocking link 65, and turns downward.

When the first tilting arm 56 and the second tilting arm 62 provided at one end in the width direction of the tilting frame 31 rotate downward, the tilting roller 64 provided at the leading end thereof receives the receiving member 23. 7 (a) and 7 (b), the one end in the width direction of the tilting frame 31 is raised by the reaction. That is, the floor plate body 81 is tilted together with the tilt frame 31 in a direction in which one end in the width direction rises.

At this time, the tilting of the tilting frame 31 is performed by the engagement hole 33 of the connecting member 34 provided in the tilting frame 31.
The support shaft 26 provided on the upper and lower frames 10 relatively slides. Thereby, the tilting frame 31 tilts smoothly and reliably.

As described above, when the floor plate 81 is tilted,
The caregiver can easily turn the body of the user who is supine on the mattress M from one end in the width direction of the floor plate body 81 to the other end with a light force, such as turning the body from the supine state to the side. It can be carried out.

On the other hand, the tilting direction of the floor plate 81 is shown in FIG.
In the case where it is desired to reverse the state shown in FIG. 3, the operating lever 72 of the switching mechanism shown in FIG. 3 is switched from the solid line state to the chain line state before the drive source 43 drives the drive shaft 43 in the backward direction. Manipulate. As a result, the distal end of the pressing shaft 67 at one end in the width direction of the tilting frame 31 is at a non-opposed position disengaged from the lower surface of the pressing tongue 52, and the distal end of the pressing shaft 67 at the other end is positioned at the pressing tongue. 52 will be opposed to the lower surface.

When the drive shaft 42 is driven in the retreating direction in this state, the first tilt arm 56 provided at the other end in the width direction of the tilt frame 31 is pressed by the pressing shaft 67 and rotates downward. The second tilt arm 62 at the other end in the width direction of the second tilt frame 31 also moves in conjunction with the rotation.

Therefore, the first and second tilting arms 5
The tilting roller 64 provided at the distal end of the receiving member 6 and 62 rotates downward while pressing the receiving portion 24 of the receiving member 23, and the tilting frame 31 is moved by the reaction of FIG.
The other end in the width direction tilts in the direction in which the other end in the width direction, which is the opposite direction to the state shown in FIG.

Thus, the caregiver can easily rotate the user's body from the other end in the width direction of the tilting frame 31 to one end when caring for the user.

That is, when a caregiver cares for a user who is lying on the mattress M, the caregiver determines whether it is easier to care for the user if the user is placed sideways with the right or left side of the body down. Operating the operation lever 72
By changing the tilting direction of the tilting frame 31, the user can easily turn or rotate in the desired direction.

The present invention is not limited to the above embodiment, but can be variously modified. For example, although the first and second leg floors are linked to the raised floor of the floor plate, the first and second leg floors do not have to be linked to the raised floor.

Although the tilting frame is provided on the base frame via the upper and lower frames, when it is not necessary to move the tilting frame up and down, the tilting frame may be provided directly on the base frame.

[0075]

As described above, according to the first and third aspects of the present invention, one drive mechanism is used to raise and lower the back-raising floor portion and to move the tilting frame provided with the floor plate in the width direction. Tilt drive can be performed.

As a result, the configuration of the bed apparatus can be simplified, thereby making it possible to reduce the size and weight of the apparatus and to reduce the cost.

According to the second and fourth aspects of the present invention, the tilting direction of the tilting frame is switched by the switching mechanism.
The tilt direction of the floor plate can be changed.

[0078] Therefore, since the tilting direction of the tilting frame can be changed according to whether the user's body is turned sideways with the right side or left side down, the caregiver can easily change the body direction of the user. Can be changed to

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a bed apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the upper and lower frames and the tilting frame.

FIG. 3 is an enlarged plan view of a switching mechanism provided at one widthwise end of the tilting frame.

FIG. 4 is a perspective view of a switching mechanism provided at an end of the back raising shaft.

FIG. 5 is a plan view showing the entire width direction of a portion where the switching mechanism for the tilting frame is provided.

FIG. 6 is a side view for explaining the movement of the first tilt arm and the second tilt arm.

7A is a vertical cross-sectional view of the bed apparatus showing a state where the tilting frame is also tilted, and FIG. 7B is a portion of the bed apparatus showing a state where the tilting frame is also tilted, which is different from FIG. 7A. FIG.

FIG. 8 is a side view of the bed device in a state where the back raising floor is raised.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base frame 24 ... Receiving part 31 ... Tilt frame 41 ... Drive mechanism 42 ... Drive source 44 ... Back raising shaft 46 ... Slide shaft 51 ... Interlocking member 55 ... Back raising arm 56 ... Tilt arm 67 ... Pressing shaft (pressing member) 72: operating lever (operating member) 81: floor plate 86: raised floor

Claims (4)

[Claims] 1. A base frame, a tilt frame provided so as to be tiltable along a width direction of the base frame, and a portion provided at the tilt frame and corresponding to at least the upper body of a user rises from a substantially horizontal state. A floor plate formed on a back-raising floor that is rotatable in a direction, and the tilting frame is tilted in the width direction while the back-raising floor is driven up and down substantially horizontally. A bed device comprising: 2. A tilting direction of the tilting frame, which is tilted by the driving mechanism, is a direction in which one end in the width direction is raised and the other end is lowered or a direction in which the other end is raised is lowered. The bed apparatus according to claim 1, further comprising a switching mechanism for switching to any one of the beds. 3. The driving mechanism includes: a driving source provided on the tilting frame; a slide shaft slidably provided in a width direction of the tilting frame; A back-up shaft that is externally fitted and rotatably driven by the drive source, and a base end portion is rotatably connected to both axial ends of the back-up shaft, and a front end portion is located on a lower surface of the back-up floor portion. A pair of back-raising arms, a pair of bases fixed to the back-raising shaft, and the back-raising arm interlocking when the back-raising shaft rotates in a predetermined direction to raise the back-raising floor in the upright direction; An interlocking member, a pair of tilting arms having a base end rotatably connected to both ends of the back-raising shaft and a front end abutting against a receiving portion provided on the base frame side; Both ends of the above-mentioned back raising shaft in the axial direction When the back-raising shaft provided at both ends protruded from the shaft rotates in a direction opposite to the predetermined direction, one of the pair of tilts is pressed by the interlocking member according to the sliding position of the slide shaft. A pair of pressing members for rotating one of the arms downward and for tilting the tilting frame in the width direction by a reaction of pressing the distal end portion of the arm against the protruding member, or a pair of pressing members. The bed device according to claim 2. 4. The switching mechanism slides the slide shaft to move one of the pair of pressing members, one of the pressing members that rotates the tilt arm downward in conjunction with the rotation of the interlocking member. 4. The bed apparatus according to claim 3, further comprising an operation member for selecting.