JP6855402B2 - Bed device - Google Patents

Description

The present invention relates to a bed device capable of driving a bed frame in an ascending or descending direction to set a predetermined height.

When a user such as a physically handicapped person moves from a wheelchair to a bed device with the help of a caregiver, or conversely from a bed device to a wheelchair, the bed frame of the bed device and the seat of the wheelchair If the heights of the beds are set to be the same, it becomes possible for the user to move by himself / herself and to perform the transfer work performed by the caregiver relatively easily.

Therefore, conventionally, by changing the height of the bed frame of the bed device and matching the heights of both, the user himself / herself moves between the wheelchair and the bed device, and the caregiver moves the user. It is easy to do.

When changing the height of the bed frame of the bed device, the bed frame is driven in either the ascending direction or the descending direction. That is, when the height of the bed frame during use is lower than the seating surface of the wheelchair, the bed frame is raised, and when it is high, the bed frame is lowered. When changing the height of the bed frame, the lowering operation switch provided on the remote controller is usually pressed.

By the way, when moving the user between the wheelchair and the bed frame, the wheelchair should be placed next to the bed frame so that the bed frame is at the same height as the seating surface, and then the user moves by himself or the caregiver uses it. It is done to move the person.

However, when the bed frame of the bed device is located higher than the seating surface of the chair, the bed frame must be lowered by operating the lowering operation switch provided on the remote controller. In that case, the operator (user himself or caregiver) of the remote controller may lower the bed frame more than necessary.

In addition, when the user sits on the edge of the bed frame and stands up from the end sitting position, the user stands up by positioning the height of the bed frame so that the user's feet surely touch the floor surface. It is also required to make it easier.

Japanese Patent No. 4141233 Japanese Patent No. 5707371

By the way, the wheelchair is provided with various members such as wheels, armrests, footrests, and hand-push handles protruding from the sides, front, and rear of the vehicle body.

Therefore, when the bed frame is driven in the downward direction with the bed frame laid sideways on the side of the bed frame, when the bed frame is lowered more than necessary, various members protruding from the periphery of the bed frame are subjected to. There is a possibility that the descending bed frame may collide with the bed frame or be pinched by the lower surface of the bed frame.

Further, since articles such as an auxiliary table are often placed around the bed device, the descending bed frame may collide with those articles.

Further, when the user stands up from the sitting position, the bed frame is required to be positioned at an appropriate height so that the user can easily stand up. In that case, if the bed frame is lowered from above an appropriate height for positioning, the user's feet may be strongly pressed against the floor surface, which may not be preferable.

The present invention provides a bed device capable of satisfactorily positioning the bed frame by driving the bed frame in the ascending direction from below to set the height when changing the height of the bed frame. It is in.

The present invention is a bed device that positions a bed frame driven in the elevating direction at an intermediate position between an upper limit position and a lower limit position.
A driving means for raising and lowering the bed frame between the upper limit position and the lower limit position,
A control means for controlling the elevating drive of the bed frame by this drive means, and
An operating means having an ascending operation unit for driving the bed frame in the ascending direction and a descending operating unit for driving the bed frame in the descending direction,
A height setting means for setting the intermediate position between the upper limit position and the lower limit position on the control means, and
A height detecting means for detecting the height position of the bed frame when the bed frame is moved up and down by the operation of the operating means is provided.
The control means raises the bed frame when the detection means detects that the bed frame has been driven in the ascending direction from below the intermediate position by the operation of the operating means to reach the intermediate position. was stopped,
When the bed frame is driven downward by the operating means from above the intermediate position and approaches the intermediate position, the control means moves the bed frame at a position below the intermediate position near the intermediate position. It is in a bed device characterized by stopping the descent of.

According to the present invention, when the bed frame is driven by the operating means from below the intermediate position in the ascending direction to reach the intermediate position, the ascending of the bed frame is stopped.

Therefore, in order to position the bed frame at the intermediate position, the bed frame is driven in the ascending direction from below, so that it is possible to prevent the bed frame from hitting a member or the like protruding from the periphery of the wheelchair. Can be done.

Moreover, the bed frame can be positioned at a height at which the user can easily stand up without imposing a burden on the legs of the user who is seated on the bed frame in the end sitting position.

The front view of the bed apparatus which shows one Embodiment of this invention. Top view of the bed device also shown. Front view showing the remote controller. The block diagram which shows the drive control of various drive sources. (A) is a diagram for explaining positioning when the bed frame is below the intermediate position, and (b) is a diagram for explaining positioning when the bed frame is above the intermediate position. A flowchart illustrating a bed frame positioning procedure when the bed frame is below the intermediate position. A flowchart illustrating a procedure for positioning the bed frame when the bed frame is above the intermediate position.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing a wake-up type bed device 1. The bed device 1 includes a base frame 2 as a bed body. Casters 3 are provided at the four corners of the base frame 2, and the base frame 2 can be moved by the casters 3. A pedal 4 is provided at one end of the base frame 2 in the longitudinal direction so that the four casters 3 can be locked and released at the same time.

A bed frame 5 is provided above the base frame 2, and the bed frame 5 is provided with a link mechanism 6 at one end and the other end in the longitudinal direction. The pair of left and right link mechanisms 6 are connected by an interlocking rod 7.

The interlocking rod 7 is driven in the left-right direction indicated by an arrow in FIG. 1 by a drive shaft 8a (shown in FIG. 2) driven forward and backward by an elevating drive source 8 provided at one end in the longitudinal direction of the bed frame 5. It is supposed to be done. As a result, the bed frame 5 is driven up and down. In this embodiment, the link mechanism 6, the interlocking rod 7, and the elevating drive source 8 constitute a driving means for driving the bed frame 5 in the elevating direction.

A floor plate 11 is placed on the upper surface of the bed frame 5. The floor plate 11 is divided into five parts: a back-raised floor portion 11a, a waist floor portion 11b, a fixed floor portion 11c, a first leg-raised floor portion 11d, and a second leg-raised floor portion 11e. The adjacent floor portions are rotatably connected to each other, and the fixed floor portion 11c is fixed to the bed frame 5.

As shown in FIG. 2, a back-raising drive source 12 and a leg-raising drive source 13 are provided on the lower surface of one end of the bed frame 5 in the longitudinal direction. The drive sources 12 and 13 drive the drive shafts 12a and 13a forward and backward in the axial direction, respectively. The tips of the drive shafts 12a and 13a are connected to the other ends of the links 12c and 13c (both shown in FIG. 1) having one end connected to the rotating shafts 12b and 13b.

One ends of a pair of first and second arms 12d and 13d (only one is shown in FIG. 1) are connected to the rotating shafts 12b and 13b, respectively. Rollers 12e and 13e are provided at the other ends of the arms 12d and 13d. The roller 12e of the first arm 12d is in contact with the lower surface of the back raising floor portion 11a, and the roller 13e of the second arm 13e is in contact with the lower surface of the first leg raising floor portion 11d.

When the back-raising drive source 12 and the leg-raising drive source 13 are operated to drive the drive sources 12 and 13 in the forward direction, the rotary shafts 12b and 13b are rotationally driven via the links 12c and 13c. .. As a result, the first arm 12d and the second arm 13d are driven in the rising direction, so that the back-raising floor portion 11a and the first leg-raising floor portion 11d are raised to the tips of the respective arms 12d and 13d. The rollers 12e and 13e provided in the above are pressed to ascend.

When the first leg-raising floor portion 11d is raised, the second leg-raising floor portion 11e is interlocked with the raising. As a result, the first leg-raising floor portion 11d and the second leg-raising floor portion 11e are bent in a substantially U-shape.

Mounting portions 16 are provided at both ends in the width direction of one end in the longitudinal direction and the other end in the width direction of the bed frame 5. As shown in FIG. 1, a headboard body 17 is detachably provided on one pair of attachment portions 16 in the longitudinal direction, and a footboard body 18 is also detachably provided on the other pair of attachment portions 14. ..

The elevating drive source 8, the back-raising drive source 12, and the leg-raising drive source 13 can be remotely controlled by the remote controller 21 through the operating means shown in FIG.

The remote controller 21 includes an ascending switch 22 as an ascending operation unit for raising the bed frame 5, a lowering switch 23 as a lowering operating unit for lowering the bed frame 5, and a back raising switch 24 for driving the back raising floor portion 11a in the raising direction. A back-lowering switch 25 that drives in the lodging direction, a leg-raising switch 26 that drives the first leg-raising floor portion 11d in the rising direction, a leg-lowering switch 27 that drives in the lodging direction, and the bed frame 5 as described later. A positioning switch 51 is provided as a positioning means used when positioning at an intermediate position.

On the back surface of the remote controller 21, a pressing switch (not shown) that can turn on / off the operation of each switch of the remote controller 21 by pressing with the tip of a ballpoint pen or the like is provided, and a hook 28 is provided on the upper surface. Is provided. The hook 28 allows the remote controller 21 to be attached to and detached from the headboard body 17 and side fences (not shown) provided on both sides of the bed frame 5, that is, to be movablely suspended.

A control device 31 constituting the control means shown by the chain line in FIGS. 1 and 2 is provided at the center of the lower surface of the bed frame 5 in the longitudinal direction and closer to one end in the width direction. From the control device 31, a relay cord 32 electrically connected to a control device (not shown) provided inside is derived.

The relay cord 32 is branched into two branch lines 32a and 32b by the distributor 33, one branch line 32a is guided from one end in the width direction of the bed frame 5 to the headboard body 17, and the other branch line 32b is the other end in the width direction. Is guided to the headboard body 17 side. A male terminal portion 34a is connected to the tips of the branch lines 32a and 32b, respectively.

The remote controller 21 is detachably connected to the male terminal portions 34a provided on the branch lines 32a and 32b of the relay cord 32. That is, the connection cord 36 is derived from the remote controller 21, and the female terminal portion 34b is connected to the tip of the connection cord 36.

Then, the female side terminal portion 34b is selectively connected to any one of the male side terminal portions 34a provided on the two branch lines 32a and 32b. As a result, as shown in FIG. 4, the remote controllers 21 operate the drive sources 8, 12, and 13 via the control device 31 to move the bed frame 5 up and down, and the back-raising floor portion 11a. The first and second leg-raising floor portions 11d and 11e can be driven up and down.

The elevating drive source 8 as a driving means for elevating and lowering the bed frame 5 is driven by the operation of the ascending switch 22 provided on the remote controller 21 and the descending switch 23.

As shown in FIG. 4, the elevating drive source 8 has an upper limit switch 44a for detecting when the bed frame 5 is driven to an upper limit position which is an operation limit in the ascending direction, and a descending direction from the upper limit position. A lower limit switch 44c is provided to detect when the vehicle is driven to the lower limit position, which is the operation limit of the above.

A height setting unit 45 as a height setting means is connected to the control device 31. The height setting unit 45 has an intermediate position for positioning and stopping the bed frame 5 between the upper limit position and the lower limit position as described later in a storage unit (not shown) provided in the control device 31. Can be set.

The height setting unit 45 can set one or a plurality of the intermediate positions with respect to the control device 31. Then, the bed frame 5 is selected as described later by selecting one of the plurality of intermediate positions set by the height setting unit 45 by the height selection unit 46, which is a height selection means. The positioning can be stopped at the intermediate position.

Here, as shown in FIGS. 5A and 5B, the upper limit position is UH, the intermediate position is MH, and the lower limit position is LH. When there are a plurality of intermediate positions MH, MH1, MH2, ..., MHn are used.

In this embodiment, the switches 44a and 44c operate according to the amount of movement of the drive shaft 8a driven forward and backward by the elevating drive source 8. That is, the amount of movement corresponds to a change in the height of the bed frame 5.

The height including the intermediate position MH between the upper limit position UH and the lower limit position LH of the bed frame 5 is a height detecting unit 47 which is a height detecting means based on the amount of movement of the drive shaft 8a. Detected by. The height detected by the height detection unit 47 is output to the control device 31.

The height of the bed frame 5 is detected by mechanically or electrically measuring the height of another means, for example, the bed frame 5, regardless of the amount of movement of the drive shaft 8a. May be good.

When the ascending switch 22 of the remote controller 21 is continuously pressed and the bed frame 5 is driven to the upper limit position UH, the upper limit switch 44a is activated and the ascending / descending drive source 8 is stopped. That is, the ascending of the bed frame 5 is stopped. In this embodiment, the upper limit position UH of the bed frame 5 is set to 600 mm from the floor surface.

In order to lower the bed frame 5 at the upper limit position UH, a lowering switch 23 provided on the remote controller 21 is pressed. Thereby, the bed frame 5 can be lowered from the upper limit position UH to the lower limit position LH. In this embodiment, the lower limit position LH of the bed frame 5 is set to 250 mm from the floor surface.

As shown in FIG. 3, the remote controller 21 is provided with the positioning switch 51. By turning on the positioning switch 51, the bed frame 5 can be stopped at the intermediate position MH set by the height setting unit 45, as will be described later. In this embodiment, the intermediate position MH of the bed frame 5 is set to 300 mm from the floor surface.

The positioning operation of the bed frame 5 to the intermediate position MH with the positioning switch 51 turned on is a position where the bed frame 5 is lower than the intermediate position MH set by the height setting unit 45. It is possible to stop at the intermediate position MH only when the upper limit switch 44a drives in the ascending direction from that position.

The positioning switch 51 may not be provided in the remote controller 21, but may be provided in the housing of the control device 31 and directly connected to the control device 31.

When the bed frame 5 is above the intermediate position MH set by the height setting unit 45, even if the lowering switch 23 is pressed with the positioning switch 51 turned on, the bed frame 5 Does not stop at the intermediate position MH set by the height setting unit 45, but descends to a position slightly below the vicinity of the intermediate position MH, for example, a preset descent stop position SH about several tens of millimeters below. And stop. The descending stop position SH is shown in FIGS. 5 (a) and 5 (b).

When the bed frame 5 stops at the descending stop position SH, a notification unit 52 as a notification means connected to the control device 31 notifies the bed frame 5 by means such as voice.

If the bed frame 5 is stopped at the lowering stop position SH and then the ascending switch 22 is pressed, the bed frame 5 is driven in the ascending direction and the intermediate position MH set by the height setting unit 45. It is designed to rise to and stop.

That is, when the bed frame 5 is driven in the ascending direction from a position lower than the intermediate position MH, the control device 31 is set by the height setting unit 45 based on the detection of the height detection unit 47. It can be stopped and positioned at the intermediate position MH.

On the other hand, when the bed frame 5 is driven from the ascending direction to the descending direction, it is driven to the descending stop position SH slightly lower than the intermediate position MH and stops, which is notified by the reporting unit 52. Will be done.

Therefore, after the bed frame 5 has stopped at the lowering stop position SH, the bed frame 5 can be positioned in the intermediate position MH by driving the bed frame 5 in the ascending direction.

When the height detecting unit 47 detects that the bed frame 5 has approached the intermediate position MH when the bed frame 5 is driven in the ascending or descending direction, the control device 31 detects that the bed frame 5 has approached the intermediate position MH. A detection signal is output to the reporting unit 52. As a result, the notification unit 52 outputs a notification signal by voice, blinking light, or the like.

Further, when the bed frame 5 is positioned at the intermediate position MH, the reporting unit 52 notifies the operator of the remote controller 21 by means such as voice or light blinking. There is.

When a plurality of intermediate positions MH for stopping the bed frame 5 are set by the height setting unit 45, one of them is selected by the height selection unit 46. Thereby, the bed frame 5 can be positioned at one of the intermediate positions MH selected as described above.

The intermediate position MH is the height of the seat of the wheelchair used by the user from the floor, the height of the stretcher, and the user sitting on the edge of the bed frame 5 and sitting on the floor. It is set to a height that is just right for you to stand up. The height that is just right for the user to get up from the sitting position depends on the height of the user.

Therefore, the control device 31 is set by the height setting units 45 of the plurality of intermediate positions MH according to the height of the seat portion of the wheelchair to be used, the height just right for the end sitting position, and one of them is selected. You can do it.

When the bed frame 5 is driven in the ascending or descending direction to approach the intermediate position MH and the height detecting unit 47 detects this, the control device 31 uses the elevating drive source 8 to drive the bed frame 5. It is designed to slow down the ascending / descending speed of.

According to the bed device having such a configuration, in order to position the bed frame 5 at the intermediate position MH set by the height setting unit 45 so that the user can easily use it, first, the remote controller 21 is used. The provided positioning switch 51 is turned on. Then, among the plurality of intermediate positions MH1, MH2, ..., MHn set by the height setting unit 45, for example, the intermediate position MH2 suitable for the user is selected by the height selection unit 46.

After that, the ascending switch 22 is operated. When the bed frame 5 is below the intermediate position MH, if the ascending switch 22 of the remote controller 21 is operated, the bed frame 5 is driven in the ascending direction from below the intermediate position MH2.

When the bed frame 5 approaches the intermediate position MH, the notification unit 52 notifies the bed frame 5, and after the ascending speed of the bed frame 5 is decelerated, the bed frame 5 stops at the intermediate position MH.

5A and 6 show an operation when the bed frame 5 below the intermediate position MH2 is positioned at the intermediate position MH2.

On the other hand, when the bed frame 5 is above the intermediate position MH2, the bed frame 5 does not operate in the ascending direction even if the ascending switch 22 is operated after turning on the positioning switch 51. ..

At this time, when the ascending switch 22 is operated, the bed frame 5 is above the intermediate position MH and the descending switch 23 is operated by the reporting unit 52 via the control device 31. You will be notified.

When the operator recognizes that the bed frame 5 is above the intermediate position MH2 by the notification of the notification unit 52, the operator operates the lower switch 23 of the remote controller 21.

As a result, the bed frame 5 is driven in the descending direction and stops at the descending stop position SH slightly below the intermediate position MH2.

When the bed frame 5 stops at the descending stop position SH, the reporting unit 52 notifies that the bed frame 5 is driven in the ascending direction. After confirming the notification, the operator operates the ascending switch 22 of the remote controller 21. As a result, the bed frame 5 is driven in the ascending direction from the descending stop position SH, and can be automatically positioned and stopped at the intermediate position MH2.

5 (b) and 7 show an operation when the bed frame 5 above the intermediate position MH2 is positioned at the intermediate position MH2.

In this way, when the bed frame 5 is below the intermediate position MH2, it can be positioned at the intermediate position MH2 by driving in the ascending direction, and when it is above the intermediate position MH2. The vehicle can be positioned by driving in the ascending direction after descending to the descending stop height SH slightly below the intermediate position MH2.

Therefore, when the bed frame 5 is positioned at the intermediate position MH2, the bed frame 5 can be positioned without being driven in the downward direction more than necessary. Therefore, the bed frame 5 is lowered too much as in the conventional case, and the bed is lowered. It is possible to prevent the device from hitting a portion protruding from the periphery of the wheelchair stopped on the side of the device or a table arranged around the bed device.

Further, when the user positions the bed frame 5 at the intermediate position MH2 while sitting on the side of the bed frame 5, the bed frame 5 is below the intermediate position MH2. Drives and positions the bed frame 5 in the ascending direction. Therefore, in that case, since the bed frame 5 can be positioned without being lowered, it is possible to prevent an inadvertent load on the legs of the user as compared with the case where the bed frame 5 is lowered for positioning.

When the bed frame 5 is above the intermediate position MH2, the bed frame 5 is first driven in the descending direction, but once stopped at the descending stop position SH slightly below the intermediate position MH2. Be made to. Then, since the bed frame 5 is driven in the ascending direction and positioned at the intermediate position MH2, it is possible to prevent the bed frame 5 from being lowered too much and putting a burden on the user's legs in this case as well. ..

A plurality of the intermediate position MHs are set in the control device 31 by the height setting unit 45, and by selecting one of them by the height selection unit 46, the bed is set at the selected intermediate position MH. The frame 5 can be positioned.

Therefore, the height of the bed frame 5 can be easily and surely positioned at the optimum intermediate position MH, which differs depending on the user, the type of wheelchair, and other conditions.

When the bed frame 5 is positioned above the intermediate position MH and positioned at the intermediate position MH, the bed frame 5 is driven in the downward direction to stop the lower position slightly below the intermediate position MH. After stopping at the position SH, it is driven in the ascending direction so that it can be positioned at the intermediate position MH.

Therefore, even when the bed frame 5 above the intermediate position MH is positioned at the intermediate position MH, it is possible to reliably prevent the bed frame 5 from being lowered too much.

When the bed frame 5 is positioned at the intermediate position MH, when the bed frame 5 approaches the intermediate position MH, the control device 31 slows down the ascending / descending speed of the bed frame 5 and approaches the bed frame 5. The reporting unit 52 makes a report.

Therefore, not only the operator and the user can surely recognize this, but also the bed frame 5 can be gently stopped at the intermediate position MH so as not to impose a burden on the user.

The height setting unit 45, the height selection unit 46, the height detection unit 47, the positioning switch 51, and the notification unit 52 may be provided in the housing of the control device 31, but what is it? Separately, a housing may be installed on the bed frame 2 and provided there, and the point is not limited at all.

Further, the configuration of the driving means for driving the bed frame 5 up and down is not limited at all, and in short, the configuration may be such that the bed frame 5 can be driven up and down.

Further, the intermediate position is set in the control device 31 by the height setting unit 45, but for example, in a housing of the remote controller 21 or the control device 31, for height storage as a height setting means. By providing a switch and operating the height storage switch when the bed frame 2 is at a height preferred by the user, the height at that time is set as the intermediate position and stored in the control device 31. You may let it.

5 ... Bed frame, 8 ... Lifting drive source (driving means), 21 ... Remote controller (operating means), 22 ... Ascending switch (rising operation unit), 23 ... Lowering switch (lowering operation unit), 31 ... Control device (Control means), 45 ... Height setting unit (height setting means), 46 ... Height selection unit (height selection means), 47 ... Height detection unit (height detection means), 51 ... Positioning switch (positioning) Means), 52 ... Reporting unit (reporting means).

Claims (6)

A bed device that positions the bed frame driven in the ascending / descending direction at an intermediate position between the upper limit position and the lower limit position.
A driving means for raising and lowering the bed frame between the upper limit position and the lower limit position,
A control means for controlling the elevating drive of the bed frame by this drive means, and
An operating means having an ascending operation unit for driving the bed frame in the ascending direction and a descending operating unit for driving the bed frame in the descending direction,
A height setting means for setting the intermediate position between the upper limit position and the lower limit position on the control means, and
A height detecting means for detecting the height position of the bed frame when the bed frame is moved up and down by the operation of the operating means is provided.
The control means raises the bed frame when the detection means detects that the bed frame has been driven in the ascending direction from below the intermediate position by the operation of the operating means to reach the intermediate position. was stopped,
When the bed frame is driven downward by the operating means from above the intermediate position and approaches the intermediate position, the control means moves the bed frame at a position below the intermediate position near the intermediate position. A bed device characterized by stopping the descent of the bed. When the intermediate position is set by the height setting means, the operating means drives the bed frame from below the intermediate position to ascend and descends from above the intermediate position based on this setting. The bed device according to claim 1, wherein the drive in the direction is controlled. The bed device according to claim 1 , wherein when the bed frame is driven in an ascending direction or a descending direction by the operating means and approaches the intermediate position, the control means reduces the ascending / descending speed of the bed frame. .. The bed device according to claim 1, wherein a plurality of the intermediate positions are set to be selectable by the height selecting means in the control means. The fourth aspect of claim 4 , wherein the control means positions the bed frame at the intermediate position selected by the height selection means among the plurality of intermediate positions set by the height setting means. Bed device. The bed device according to claim 1 , further comprising a reporting means for notifying when the bed frame is driven in an ascending direction or a descending direction to reach the intermediate position.

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