JP2003245313A - Body position changing type bed device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small, lightweight, convenient and easy-to-use bed device that prevents a bedsore by helping a person automatically toss and turn on a bed without the help of an attendant. <P>SOLUTION: First and second bed plate positions 4 and 5 and second and third bed plate portions 5 and 6 alternately displace to a horizontal normal position and a use position in which they bend down in the form of a trough by the alternate energization and driving of a first motor 19 having a rod 19a and a second motor 22 having a rod 22a. Since the tossing and turning change of the positions can be realized by the extension and contraction displacement of the first and second motors 19 and 22 provided with the rods 19a and 22a and a pantograph mechanism 14, the length of the rods 19a and 22a and the pantograph mechanism 14 can be reduced, and the possibility of reducing the heights and widths makes the device small and lightweight, and easy-to use. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body-position-changing type bed apparatus for automatically turning over a care recipient such as a sick person who cannot move by himself without the help of an attendant. .

[0002]

2. Description of the Related Art A bedridden sick person (cared person) who has a physical disability cannot take care of the weight of the sick person even if he / she is devoted to care at home or undergoes thorough medical treatment by a specialist doctor. It remains almost constant. For this reason, the back of the sick person is always in contact with a specific position, and the person is liable to have a bedsore. Distributing an attendant to a bedridden sick person for a long time not only increases the cost, but also the sick person feels a psychological burden, and the whole family tends to have an unpleasant life. For this reason, in modern and future societies in which the number of bedridden illnesses is increasing with the progress of aging, there has been a demand for a bed apparatus capable of automatically rolling over without beds and preventing bed sores. In response to this, JP-A-63-226351 (JP-B-4-659)
The bed apparatus for caring for the bedridden patient described in 1) has appeared.

[0003]

Problems to be Solved by the Invention JP-A-63-2263
The bed apparatus described in Japanese Patent Publication No. 51 has a structure in which a bed plate is displaced between a normal position and a use position where it is bent in a valley shape by using a supporting rod, a moving rod, and a lifting rod of a hydraulic cylinder. According to this structure, when the bed part is displaced from the normal position to the use position and stopped, the displacement regions of the support rod, the moving rod, and the lifting rod of the hydraulic cylinder are made as small as possible so that the overall size is not increased. ing. However,
Due to the recent market demand, it is desired to make these length dimensions shorter and to make them smaller and lighter in the overall height and width dimensions to be a convenient and convenient bed apparatus.

The present invention has been made in view of the above circumstances, and an object thereof is to automatically turn over without an attendant to prevent bed sores, and to reduce the height and width dimensions, which is small and compact. An object of the present invention is to provide a body position conversion type bed device which is lightweight, convenient and easy to use.

[0005]

[Means for Solving the Problems] (Claim 1) A bed part that is held in a substantially horizontal state at a predetermined distance from a frame placed on an installation surface, and a line part that extends along the height direction. First, second and third bed plate portions that are formed by being divided into at least three parts in the width direction and that are connected by a hinge portion and are bent and rotatable with respect to each other, and the first bed plate portion. And the frame, and between the third bed plate part and the frame, the first and third
And a retractable pantograph mechanism provided so as to be displaced at a right angle or a substantially right angle with respect to the bed plate part, and one end thereof is rotatably supported by the first bed plate part, and An electric motor with a first rod, an end of which is rotatably supported by the frame, and which reciprocally displaces a rod in an advancing / retreating direction to move the first bed plate portion while expanding and contracting the pantograph mechanism. The rod is arranged so as to intersect with the first electric motor with rod, one end of which is rotatably supported by the third bed plate part, and the other end of which is rotatably supported by the frame. And a second electric motor for moving the third bed plate part while reciprocally moving in the advancing / retreating direction with the expansion and contraction displacement of the pantograph mechanism. The first electric motor with rod and the second rod. With electric motor By energizing the first and second bed plates, the first and second bed plates and the second and third bed plates are alternately displaced between a horizontal normal position and a use position where the second bed plate is bent downward in a valley shape. It is characterized by

(Claim 2) The first and second
The electric motor with a rod reciprocally displaces the rod in the advancing / retreating direction by the rotation of a screw incorporated therein, so that the first, second, and third bed plate portions of the bed portion are moved to the normal position and the use position. It is characterized in that it is displaced between and.

(Claim 3) Each of the first, second and third bed plate portions comprises a frame and a slide plate portion slidable laterally in the frame. As the bed part is displaced from the normal position to the use position by the second electric motor with rod, the slide plate parts of the first and second bed plate parts or the second and third bed plate parts. The link mechanism section for moving the slide plate sections in a direction away from each other to absorb the positional deviation of the user.

(Claim 4) In the link mechanism section, as the bed section is displaced from the normal position to the use position by the first and second electric motors with rods, the first and second It is characterized by comprising a link for transmitting the displacement of the bed plate portion to these slide plate portions and a link for transmitting the displacement of the second and third bed plate portions to these slide plate portions.

(Claim 5) A left pillow plate portion and a right pillow plate portion provided at a front end portion of the second bed plate portion, wherein the bed portion is formed by the first and second electric motors with rods. It is characterized by having a pillow support mechanism that alternately supports the left and right temporal regions of the user by the left pillow plate portion and the right pillow plate portion as the normal position shifts to the use position.

(Claim 6) The left pillow plate portion of the pillow support mechanism and the left pillow plate portion provided on the second bed plate portion of the bed and driven by the first and second electric motors with rods. A pillow is detachably attached to the right pillow plate portion.

(Regarding Claim 7) A slide-adjustable push button for controlling energization to the first and second electric motors with rods is provided at a position slightly retracted inward on the back surface of the left and right outer portions of the bed. A type switch is provided.

(Regarding Claims 8 and 16) A pulley such as a door pulley is detachably attached to the outer bottom portion so that the installation surface can be freely moved.

(Claim 9) A bed part which is held in a substantially horizontal state at a predetermined distance from a frame placed on an installation surface, and a bed part of the bed part which is at least three in a width direction along a line portion along the height direction. Firstly formed by being divided into parts, which are connected by a hinge part and can be bent and rotated with respect to each other.
The first and third bed plate parts are provided between the second and third bed plate parts, the first bed plate part and the frame, and between the third bed plate part and the frame. An expandable pantograph mechanism provided so as to be displaced at a right angle or a substantially right angle with respect to the second bed plate part, and the second bed plate part provided in the longitudinal direction at the central part of the second bed plate part. The first and the second bed plate parts by rotating the second bed plate part around the support shaft via a support shaft for rotatably supporting the second bed plate part and a link connected to the second bed plate part. And a drive unit for alternately displacing the second bed plate part and the second and third bed plate parts between a horizontal normal position and a use position where the bed part is bent downward in a valley shape. .

(Claim 10) The drive unit is composed of an electric motor with a rod, and the rod incorporated therein is reciprocally displaced in the advancing / retracting direction by the rotation of a screw incorporated therein, and the second bed plate portion is moved through the link. It is characterized in that it is rotated to displace the first, second and third bed plate parts of the bed part between the normal position and the use position.

(Claim 11) The first, second and third bed plate parts each include a frame and a slide plate part slidable laterally in the frame.
As the bed part is displaced from the normal position to the use position by the driving part, the slide plate parts of the first and second bed plate parts or the slide plates of the second and third bed plate parts. It is characterized in that it has a link mechanism part that moves the parts in a direction in which they are separated from each other and absorbs the positional deviation of the user.

In the link mechanism section, the displacement of the first and second bed plate sections is caused by the displacement of the bed section from the normal position to the use position by the drive section. And a link for transmitting the displacements of the second and third bed plates to the slide plates.

(Claim 13) A left pillow plate portion and a right pillow plate portion provided at a front end portion of the second bed plate portion,
As the bed part is displaced from the normal position to the use position by the driving part, the left and right temporal regions of the user are alternately supported by the left pillow plate part and the right pillow plate part. It is characterized by

(Claim 14) The left pillow plate part and the right pillow plate part of the pillow support mechanism provided on the second bed plate part of the bed part and driven by the drive part, The feature is that the pillow is attached detachably.

(Claim 15) A slide-adjustable push-button switch for controlling energization to the drive unit is provided at a position slightly retracted inward on the back surface of the left and right outer portions of the bed. Is characterized by.

According to a seventeenth aspect of the present invention, the drive section includes a driving pinion and a driven pinion meshing with each other, an upper link and a lower link connected between the driving pinion and the support shaft, the driven pinion and the A connecting arm connected to the lower end of the pantograph mechanism, a joint,
A center plate, a long rail, and a side plate connected to the center plate, and the driven pinion passes through the upper link and the lower link as the bed part is displaced from the normal position to the use position. Rotating in a direction opposite to that of the driving pinion and causing the connecting arm to slide the central plate and the side plate along the long rail by the joint to displace the lower end portion of the pantograph mechanism outward. Is characterized by.

[0021]

(Advantageous Effects of the Invention) (Claim 1) When the electric motor of the first rod is energized, the rod is reciprocally displaced in the advancing / retreating direction to cause the first and second bed plates to expand and contract in the pantograph mechanism. Move it so that it folds downward along with it. The second electric motor drives the rod to reciprocally displace the rod in the advancing / retreating direction.
Then, the third bed plate portion is moved so as to be bent downward while being accompanied by the expansion and contraction displacement of the pantograph mechanism. First
The electric motor with rod and the electric motor with second rod are alternately energized to drive the first and second bed plate parts and the second and third bed plate parts to a horizontal normal position and a valley below. It is displaced alternately between the bending position and the use position.

For this reason, the user on the bed can distribute his / her weight in different directions in the left and right directions, and can automatically turn over without an attendant to prevent bed sores. Since it is turned over without an attendant, it can contribute to the reduction of costs and the psychological burden on the user in the long term. In addition, as the user is displaced and repositioned between the normal position and the use position, the user's back side is examined at the time of rounds at a hospital or the like, and different left and right views are alternately obtained. This makes it easier to see visitors and posted items. Moreover, this turning position conversion can be realized by the first and second electric motors with rods and the expansion and contraction displacement of the pantograph mechanism. Therefore, the length of the rod and the pantograph mechanism can be set small, and the height and width of the rod and pantograph mechanism can be made small and lightweight, which is convenient and convenient.

(Claims 2 and 10) Electric motor with rod (first and second electric motor with rod) for displacing the first, second and third bed plate portions between the normal position and the use position. ), The rods are reciprocally displaced in the advancing / retreating direction by the rotation of the screws incorporated therein. For this reason, when displacing from the normal position to the use position, the vehicle gradually decelerates instead of stopping suddenly, so that the user can rest comfortably and lie on the bed.

(Claims 3 and 11) As the bed part is displaced from the normal position to the use position, the slide plate parts of the first and second bed plate parts, or the second plate parts of the second bed plate part
And the slide plate parts of the third bed plate part are moved in the directions in which they are separated from each other. Therefore, the positional deviation of the user lying on the first and second bed plate portions or the second and third bed plate portions is absorbed. As a result, there is no sense of pressure that the bed portion is sandwiched between the first and second bed plate portions or the second and third bed plate portions each time the bed portion is displaced from the normal position to the use position. Can be used.

(Claim 4 and Claim 12) The link mechanism section is a link for transmitting the displacement of the first and second bed plate sections to these slide plate sections as the link mechanism section is displaced from the normal position to the use position. And a link for transmitting the displacement of the second and third bed plates to these slide plates. Since the displacement of the first, second, and third bed plates is used to move the slide plate, there is no need to add a new power source to the slide plate, which is advantageous in terms of cost.

(Claim 5 and Claim 13) The pillow support mechanism comprises a left pillow plate portion and a right pillow plate portion provided at the front end portion of the second bed plate portion, and the bed portion is used from the normal position. The left and right temporal regions of the user are alternately supported by the left pillow plate portion and the right pillow plate portion as the position is displaced. For this reason, when the bed part is displaced from the normal position to the use position, the head of the user does not greatly shake, and the user can be supported well and can comfortably turn over.

(Claims 6 and 14) Pillows are detachably attached to the left pillow plate portion and the right pillow plate portion of the pillow support mechanism. For this reason, it is convenient that the pillow is quickly replaced with a new one each time it becomes dirty.

(Claims 7 and 15) A slide-adjustable push-button switch for controlling the displacement of the bed is provided at a position slightly retracted inward on the left and right outer back surfaces of the bed. There is. For this reason, unlike the case where the push-button type switch projects outward, the push-button type switch does not get in the way, is not caught by the upper futon, attendant, etc., and there is no fear of causing a malfunction, so it is safe. .

Generally, the hand switch for displacing the position of the bed is provided on the bed and is placed near the user such as in the upper futon so that the user can operate it. For this reason,
Although the hand switch may malfunction, the push-button switch can change the position of the bed simply by pressing it at a position where the left and right fingers of the user can reach. As a result, the push-button switch can be operated by slightly moving the right and left fingers according to the direction of turning over, and the user can be brought to a comfortable sleep without annoying the user. Moreover, since the push-button switch can be slide-adjusted, it is convenient to slide the push-button switch along the outer back surface of the bed so that the push-button switch can be moved to the optimum position within the reach of the user's finger. . Further, when the user falls asleep with the bed displaced to the use position, the timer control means that the timer returns to the original normal position after a lapse of a predetermined time (for example, 30 minutes). it can.

(Regarding Claims 8 and 16) A pulley such as a door pulley is detachably attached to the outer bottom portion so that the installation surface can be freely moved. Therefore, it is convenient because the user can be transported to a desired position such as a place for private use such as a bathtub or a toilet. If the door roller is removed, it can be used as a stationary bed device.

(Claim 9) The second bed plate part is alternately rotated right and left around the center support shaft by the energization drive of the drive part with the expansion and contraction displacement of the pantograph mechanism through the link. . Along with this, the first and second bed plate portions and the second and third bed plate portions are alternately displaced between a horizontal normal position and a use position in which they are bent downward in a valley shape. For this reason, similarly to the first aspect, the user on the bed can alternately add the weights to the different portions in a dispersed manner. As a result, the user can automatically turn over without an attendant, and the back of the user is not always in contact with a specific position, and bed sores can be prevented.

Since the person turns over without the help of an attendant, it contributes to the reduction of costs and the psychological burden on the user in the long term. Since the position of the user is changed as the bed part is displaced between the normal position and the use position, different visual fields are alternately obtained on the right and left sides, and the visitors and the posted matter are easily visible. Moreover, this turning over position conversion can be realized by the expansion and contraction displacement of the link, the support shaft, the drive unit, and the pantograph mechanism. Therefore, the length of the link and the pantograph mechanism can be set small, and the height and width of the link and pantograph mechanism can be small, lightweight, convenient, and easy to use.

(Claim 17) As the bed part is displaced from the normal position to the use position, the driven pinion is rotated by the drive part in the direction opposite to the driving pinion via the upper link and the lower link, and the connecting arm is moved. The center plate and the side plate are slid along the long rail by the joint to displace the lower end portion of the pantograph mechanism outward. For this reason, the pantograph mechanism is tilted and the first or third
It is possible to displace the bed plate part of the device to the use position. In order to achieve the tilting of the pantograph mechanism, the power of the bed is used, and relatively simple connecting members such as the driving pinion, the driven pinion, and the upper and lower links are sufficient. become.

[0034]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Each embodiment of the present invention will be described with reference to the drawings. 1 to 8 show a first embodiment of the present invention. 1 to 3, the flat rectangular frame 1 of the body position conversion type bed apparatus is placed on an installation surface 2 such as a nursing room of a hospital or a living room of a home. Pulleys such as door pulleys (casters) not shown are attached to the four corners of the outer bottom of the rectangular frame 1 so that the rectangular frame 1 can be freely moved to a desired place. Above the rectangular frame 1, a vertically long and flat bed part 3 is held in a substantially horizontal state.

The bed portion 3 is formed by dividing the bed portion 3 into, for example, three portions in the width direction along a line portion along the height direction of the user U such as a bedridden patient (care recipient). Four
Having ~ 6. These first to third bed plate parts 4 to 6 are connected by hinge parts 7 and 8 at their boundaries, and can be bent and rotated relative to each other. Handrails 3h are provided on the left and right outer portions of the bed 3, and function as a support when the user U gets up on the bed 3 or as a protection member for the user U. This handrail part 3h is used as the bed part 3
It may be detachably provided, and may be removed when unnecessary. Similarly, the door roller provided on the rectangular frame 1 is also removable, and can be removed when unnecessary.
Since the bed part 3 has the first to third bed plate parts 4 to 6, the wording “the bed part 3” also refers to the “first part” regarding the object displaced between the normal position and the use position described later. ~ Third
The wording "the bed board parts 4 to 6" is also used in the same meaning.

On both sides of the upper end of the rectangular frame 1, a bottom portion of a truss 9 having a substantially triangular shape is rotatably supported by a pin 10. The upper end of the truss 9 forms a protrusion 11, and the protrusion 11 is rotatably inserted in rectangular frames 12 and 13 provided on the lower surfaces of the first and third bed plate portions 4 and 6. An expandable pantograph mechanism 14 in which four small links intersecting in an X shape are stacked in multiple stages at four corners of the bed 3.
Is provided. The lower end of the pantograph mechanism 14 is rotatably supported by the pin 15 on the inner bottom of the rectangular frame 1, and the inner end 14a of the small link at the upper end is the lower surface of the first and third bed plate parts 4, 6. It is attached to the anchor 16 of the section by a pin 24. The outer end 14b of the small link at the upper end of the pantograph mechanism 14 is slidable via a roller 18 to a rail-type storage unit 17 attached to the lower surface of the first and third bed plates 4, 6. .

In the vicinity of the center of the inner bottom portion of the rectangular frame 1, a pin 20 is provided with a first electric motor 19 with a rod which constitutes a drive unit.
It is rotatably attached by. The first electric motor 19 with a rod has a rod 19a which is displaced forward and backward in the axial direction by the rotation of a screw (including a ball screw and a trapezoidal screw) incorporated therein. The rod 19a is rotatably attached to the lower surface of the first bed plate 4 by a pin (not shown). Similarly, the second electric motor 22 with a rod which constitutes a drive unit is arranged so as to intersect with the first electric motor 19 with a rod, and the pin 23 is provided on the inner bottom portion of the rectangular frame 1.
It is rotatably attached by. The second electric motor 22 with a rod has a rod 22a that is moved forward and backward in the axial direction by the rotation of a screw incorporated therein. The rod 22a has a pin (not shown) on the lower surface of the third bed plate portion 6.
It is rotatably attached by.

Electric motors 19 with first and second rods,
Push-button switch S for controlling the on / off of 22
1 and S2 are attached to both left and right sides of the bed part 3, that is, at positions slightly retracted inward on the back surfaces of the outer sides of the first and third bed plate parts 4 and 6, and the positions where the fingers of the user U can reach. The slide is adjustable.

As shown in FIG. 2, the first to third bed plates 4 to 6 are provided with a slide plate 26 in a frame 25 so as to be slidable in the lateral direction (width direction). Second bed board part 5
As shown in FIG. 3, a beam portion 27 corresponding to the left and right rail type storage portions 17 is provided, and a rotating piece portion 28 and a driven piece portion 29 are attached to the beam portion 27 by pins 30. The driven piece portion 29 has a roller 32 that fits into a sliding hole 31 (see FIG. 2) formed in the slide plate portion 26 of the second bed plate portion 5. The rotating piece portion 28 is pinned so that the swinging piece portion 33 can rotate.

Between the rotating piece 28 and the swing piece 33,
A tension coil spring (not shown) is arranged, and the swinging piece portion 33 biases the swinging piece portion 28 in a line in a line. The rocking piece 33 is rotatably attached to the anchor 16 by the pin 21 via a link 34 that forms a link mechanism, and includes a relay link 16a, a vertical link 35, and a horizontal link 3.
6 and the outer ends 14 of the small links in the left and right pantograph mechanisms 14 via the rollers 18 of the rail type storage unit 17.
connected to b. The left and right vertical links 35 have rollers 38 that fit into sliding holes 37 (see FIG. 2) formed in the slide plate portions 26 of the first and third bed plate portions 4 and 6.

The second and third bed plate parts 5, 6 of the bed part 3 are
As will be described later, when the horizontal normal position indicated by the chain double-dashed line in FIG. 1 is displaced to the use position indicated by the solid line that is bent downward in a valley shape, the pantograph mechanism 14 caused by the rotation of the bed plate 6 is moved.
The contraction displacement causes the lateral link 36 to move the rail-type storage unit 17 by the roller 18 through the outer end portion 14b of the small link in the direction indicated by the arrow D in FIGS. 3 and 4. Along with this, the vertical link 35 rotates in the direction indicated by arrow E in the figure. Therefore, the slide plate portion 26 of the third bed plate portion 6 moves in the direction indicated by the arrow C in FIG.
Further, the rotational displacement of the third bed plate part 6 causes the link 34 to move in the direction indicated by the arrow F in FIGS. 3, 5, and 6.
As a result, the rotating piece portion 28 and the driven piece portion 29 have the pin 3
It rotates in the direction indicated by arrow A in FIGS. 3, 5 and 6 about 0. Therefore, the slide plate portion 26 of the second bed plate portion 5 moves in the direction indicated by the arrow B in FIG. 1 via the roller 32.

When the second and third bed plate parts 5, 6 are displaced from the normal position to the use position, the slide plate parts 26 of the second and third bed plate parts 5, 6 are as shown by arrows B, C. Move away from each other. Therefore, the displacement of the user U lying on the second and third bed plate portions 5 and 6 is absorbed through the bedding 39. Accordingly, there is no feeling of pressure that the user U is caught between the second and third bed plate parts 5 and 6 of the bed part 3, and the bed part 3 can be used with peace of mind. The same thing happens with the slide plate portions 26 of the first and second bed plate portions 4 and 5 when the first and second bed plate portions 4 and 5 are displaced from the normal position to the use position.

A pillow support mechanism 40 is provided at the front end of the second bed plate 5 in the bed 3, as shown in FIGS. 7 and 8. The pillow support mechanism 40 has a left pillow plate portion 41 and a right pillow plate portion 42. The left pillow plate portion 41 is the vertical support plate 4
3 is rotatably attached to the front end of the second bed plate 5, and the right pillow plate 42 is rotatably attached to the front end of the second bed plate 5 via a vertical support plate 44. ing. The link rod 45 that drives the left pillow plate portion 41 is rotatably attached to the vertical support plate 43 of the left pillow plate portion 41 by a pin 46 at one end thereof, and has an elongated hole portion 47 formed at the other end. . Link bar 4
The other end of the first pin 5 is formed by the pin 48 through the long hole 47.
It is rotatably attached to the front end of the bed plate 4.

The link rod 49 for driving the right pillow plate portion 42 is
One end of the vertical support plate 4 of the right pillow plate part 42 is fixed by a pin 50.
4 is rotatably attached, and a slot 51 is formed at the other end. The other end of the link rod 49 is rotatably attached to the front end of the third bed plate 6 by a pin 52 via an elongated hole 51. Pillow 53 provided in the pillow support mechanism 40
Is a left pillow part 5 containing a required amount of cushioning material such as natural fiber such as cotton fiber, synthetic fiber or sponge.
4, the inner pillow portion 55, the right pillow portion 56, and the neck rest portion 57 are integrally connected with the seam as a boundary. The left pillow portion 54 and the right pillow portion 56 are in the shape of a bag, and they are detachably attached to the pillow support mechanism 40 by inserting them into the left pillow plate portion 41 and the right pillow plate portion 42. Therefore, each time the pillow 53 becomes dirty and needs to be washed, the pillow 53 can be simply and quickly replaced with a new one.

The pillow 53 includes the left pillow 54 and the middle pillow 5.
5. A cushion member such as cotton fiber, straw, buckwheat seed or sponge is placed on a portion corresponding to the right pillow portion 56 and the neck rest portion 57, and these are covered with a cloth member such as a natural or synthetic sheet to sew the boundary portion. By doing so, the four parties can be integrally manufactured. For this reason, the pillow 53 consisting of four persons is always handled integrally, and the four persons do not separate into pieces each time the pillow 53 is removed, and there is no inconvenience that some of them are lost carelessly.

Of the pillows 53, the height of the neck rest 57 is particularly large, so that the nape of the user U is not subjected to unreasonable force even when sleeping or staying on the floor for a long time. You can have a good night's sleep by having a good night's sleep. In addition, expandable gas dampers 58 and 59 are bridged between the first bed plate part 4 and the rectangular frame 1 in an intersecting state, and between the third bed plate part 6 and the rectangular frame 1. Expandable gas dampers 60 and 61 are laid across in an intersecting state. These gas dampers 58 to 61 expand and contract according to the displacement of the bed part 3 to stabilize the displacement of the first to third bed plate parts 4 to 6.

In FIG. 7, the second and third bed plate parts 5, 6 are provided.
Is displaced from the normal position to the use position where it is bent in a valley shape, the link rod 49 is rotated in the direction indicated by the arrow I by the rotational displacement of the third bed plate portion 6. For this reason, the right pillow plate portion 42 and the vertical support plate 44 shown in FIG. 8 rotate in the direction indicated by the arrow H, and the right pillow portion 56 makes a substantially right angle with the middle pillow portion 55 as shown in FIG. Displace. Thereby, as the second and third bed plate parts 5, 6 are displaced from the normal position to the use position, the right side head of the user U is supported by the right pillow part 56, which is convenient. Further, when the first and second bed plates 4, 5 are displaced from the normal position to the use position, the left pillow plate portion 41 and the vertical support plate 43 shown in FIG. 54 is displaced so as to form a substantially right angle with the inner pillow portion 55. Therefore, the left side head of the user U is supported by the left pillow portion 54.

In the above configuration, the user U such as a sick person
Normally, the head is put on the pillow 53, and while wearing an upper comforter (not shown), the person is lying on the bed 3 on the bed 3 via the comforter 39 in a rest state. At this time, the first to third bed plate parts 4 of the bed part 3
6 are located in a substantially horizontal state (FIG. 1). When the user U turns over to the right from this state, for example, the user U
The push-button switch S1 is operated by. As a result, the second electric motor 22 with a rod is energized, so that the rod 22a is displaced in the retracting direction as shown by an arrow J in FIG. Therefore, the second electric motor 22 with a rod
Rotates about the pin 23 as shown by arrow K in FIG.
The second and third bed plate parts 5 and 6 are rotated around the hinge part 8 while the pantograph mechanism 14 is contracted and displaced. As a result, the second and third bed plate parts 5 and 6 are displaced from the normal position in the substantially horizontal state (two-dot chain line) to the use position (solid line) in which they are bent in a valley shape. As a result, the user U changes from the supine position to the right side recumbent position, and turning over is performed to convert the position where the user U's back contacts.

To return the bed section 3 to the substantially horizontal normal position,
The push-button switch S1 is operated again. As a result, the second electric motor 22 with a rod is re-energized,
The rod 22a is displaced so as to advance in the direction opposite to the arrow J. Therefore, the second electric motor 22 with a rod rotates in the direction opposite to the arrow K about the pin 23, and the second and third bed plate parts 5, 6 are valley-shaped while the pantograph mechanism 14 is extended and displaced. From the use position (solid line) bent to the normal position (two-dot chain line) in a substantially horizontal state.

When the user U turns over to the left, the user U operates the push button type switch S2. As a result, the electric motor 19 with the first rod is energized, so that the rod 19a is displaced in the direction of retracting as shown by the arrow L in FIG. Therefore, when the first electric motor 19 with a rod is rotated about the pin 20 in the direction indicated by the arrow M in FIG. 1 and the second and third bed plate parts 5, 6 are rotationally displaced downward. Similarly, the contraction displacement of the pantograph mechanism 14 is accompanied by displacement of the first and second bed plate portions 4 and 5 from a normal position in a substantially horizontal state to a use position bent in a valley shape.
For this reason, the user U changes from the supine position to the left side recumbent position, and turning over is performed to convert the position where the user U's back contacts.

To return the bed 3 to the substantially horizontal normal position,
The push-button switch S2 is operated again. This allows
Since the electric motor 19 with the first rod is re-energized, the rod 19a advances and displaces in the direction opposite to the arrow L. Therefore, the first electric motor 19 with a rod rotates about the pin 20 in the direction opposite to the arrow M, and the pantograph mechanism 14 moves.
The first and second bed plate parts 4 and 5 are returned to the normal position in the substantially horizontal state from the use position in which the first and second bed plate parts 4 and 5 are bent in a valley shape while being accompanied by the extension displacement. When the bed part 3 is displaced between the normal position and the use position, the expansion / contraction direction of the pantograph mechanism 14 maintains a right angle or a substantially right angle with respect to the first and third bed plate parts 4 and 6. .

In the bed 3, the first and second bed plates 4 and 5 and the second and third bed plates 5 and 6 are alternately switched from the normal position to the use position by operating the push-button switches S1 and S2. Is displaced to. For this reason, the user U on the bed 3 can add the weight to different portions alternately, and can automatically turn over without an attendant and prevent bed sores. Since it is turned over without an attendant, it contributes to the reduction of costs and the psychological burden of users in the long run.

By changing the position of the user U between the normal position and the use position, it is convenient to have the back side of the user U examined without requiring an attendant at the time of a round in a hospital or the like. Or different visual fields are alternately obtained on the left and right sides to make it easier to visually recognize visitors and posted objects. Moreover, this turning position conversion can be realized by the expansion and contraction displacement of the first and second electric motors 19 and 22 with rods and the pantograph mechanism 14. Therefore, the lengths of the rods 19a and 22a and the pantograph mechanism 14 can be set small, and the height and width of the rods 19a and 22a are small, which makes them compact and lightweight, which is convenient and convenient.

First and second electric motors with rods 19,
22 is a rod 1 by the rotation of the screw built in these.
9a and 22a are reciprocally displaced in the advancing / retreating direction. For this reason,
When the bed 3 is displaced from the normal position to the use position, the bed 3 gradually decelerates slowly instead of suddenly, so that the patient can be in a supine or recumbent state without anxiety.

As the bed part 3 is displaced from the normal position to the use position, the slide plate parts 2 of the first and second bed plate parts 4 and 5 are moved.
6 and the slide plate portions 26 of the second and third bed plate portions 5 and 6 move in the directions (arrows B and C in FIG. 1) away from each other. Therefore, when the first and second bed plate parts 4 and 5 or the second and third bed plate parts 5 and 6 are displaced from the normal position to the use position, the positional deviation of the user U is absorbed. Thereby, every time the bed part 3 is displaced from the normal position to the use position, the user U is sandwiched between the first and second bed plate parts 4 and 5 or the second and third bed plate parts 5 and 6. It can be used with peace of mind without any urgency.

The link mechanism portion of the present invention includes a link 34 and a relay link for transmitting the displacement of the first and second bed plate portions 4 and 5 (the second and third bed plate portions 5 and 6) to the slide plate portion 26. 16
a, a vertical link 35 and a horizontal link 36. In order to move the slide plate portion 26, the displacement of the first to third bed plate portions 4 to 6 is used via the link mechanism portion of the present invention, so that it is necessary to add a new power source to the slide plate portion 26. There is no cost advantage.

The pillow support mechanism 40 comprises a left pillow plate part 41 and a right pillow plate part 42 provided at the front end of the second bed plate part 5, and when the bed part 3 is displaced from the normal position to the use position. , The left side of the user U and the right side of the pillow 4
Alternately supported by two. Therefore, when the bed 3 is displaced from the normal position to the use position, the head of the user U is not greatly shaken, and the user U is supported well and can comfortably turn over.

Pillows 53 are detachably attached to the left pillow plate portion 41 and the right pillow plate portion 42 of the pillow support mechanism 40. Therefore, especially when the pillow 53 is easily soiled like a bedridden patient, it can be replaced with a new one easily and quickly, which is convenient. In addition, the first and third bed plate parts 4, 6
Push button switches S1 and S2 for controlling the displacement of the bed portion 3 are provided at positions slightly retracted inward on the back surface of the outer side of the bed. Therefore, unlike the case where the push-button switches S1 and S2 are projected outward, the push-button switches S1 and S2 do not get in the way and are not caught by the upper futon or an attendant, which causes a malfunction. It is safe without worrying about

9 to 11 show a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that
The second bed plate portion 5 is provided so as to be independently rotatable in the left-right direction. Therefore, in the second embodiment, the same members as those in the first embodiment are designated by the same reference numerals and only different portions will be described. First and second electric motors 19 and 22 with rods
Instead of the above, an electric motor 64 with a rod for rotating the second bed plate portion 5 is provided as a drive portion as shown in FIGS. 9 and 10. A support shaft 62 is passed through the second bed plate portion 5 in the longitudinal direction of the central portion of the second bed plate portion 5, and is supported substantially horizontally by columns 63 provided in front of and behind the bed portion 3. A driven pinion 66 and a driving pinion 67 are mounted on the support column 63 on the mounting board 65 so as to mesh with each other.

Driving pinion 67 and driven pinion 66
A lateral support shaft 70 and an auxiliary support shaft 70a, which rotate integrally with them, are fitted in the respective shafts. Down link 68
Has one end fixed to the driving pinion 67, and the other end via the upper link 69 on the back surface of the second bed plate 5 at the hinge portion 8.
It is rotatably connected to the vicinity. Electric motor with rod 6
4 is installed in the substantially central part of the rectangular frame 1, and moves the rod 64a forward and backward in the axial direction by the rotation of a screw such as a built-in nut. One end of the intermediate link 71 has a horizontal support shaft 70.
Is fixed to the rod 6 and the other end is a rod 6 of the electric motor 64 with a rod.
It is rotatably connected to the tip of 4a.

The long rails 73 are provided in front of and behind the rectangular frame 1 so as to cross the inner bottom portion thereof. Side plates 75 having three small rollers 74 are provided at the left and right ends of the long rail 73 so as to be slidable in the longitudinal direction. Each side plate 75 includes a left and right pantograph mechanism 14
Is rotatably connected to the lower end of the pin by a pin Pn.
A central plate 77 having three small rollers 76 is provided at a substantially central portion of the long rail 73 so as to be slidable in the longitudinal direction. A lower end portion of a connecting arm 78 fixed to the driven pinion 66 by an auxiliary support shaft 70a is rotatably connected to the center plate 77 via a joint 79. The center plate 77 is connected to the left and right side plates 75 by the arm portions 75a and moves integrally with them.

As in the first embodiment shown in FIG. 1, a user U such as a sick person usually puts his head on the pillow 53 and puts his back on the bed 3 while wearing an upper futon (not shown). There is. When the user U turns over to the right from this state, the push button switch S1 shown in FIG. 10 is operated. As a result, the electric motor 64 with a rod is energized, so that the rod 64a
Is displaced in the advancing direction as shown by arrow N. For this reason,
The intermediate link 71 rotates about the horizontal support shaft 70 in the direction indicated by the arrow Q, and moves the upper link 69 and the lower link 68 in the direction indicated by the arrow T.

At this time, since the driving pinion 67 rotates in the direction shown by arrow Q, the driven pinion 66 rotates in the direction shown by arrow R. Therefore, the central plate 77 moves in the direction indicated by the arrow Y along the long rail 73 via the connecting arm 78 and the joint 79, and the right side plate 75 is displaced outward via the arm portion 75a. The right pantograph mechanism 14 is slightly tilted to the left. As a result, the second and third bed plate parts 5 and 6 rotate downward around the hinge part 8 via the upper link 69 and the lower link 68 while the right pantograph mechanism 14 is contracted and displaced. Therefore, as shown by the solid line in FIG. 10, the second and third bed plate parts 5,
6 is displaced from the normal position to the use position where it is bent in a valley shape. As a result, similarly to the first embodiment of FIG. 7, the user U changes from the supine position to the right side recumbent position, and the position where the user U's back contacts is converted from the substantially vertical direction to the lateral direction. .

To return the bed 3 to the normal position, the push button type switch S1 is operated again. As a result, the electric motor 64 with a rod is re-energized, so that the rod 64a is displaced backward in the direction opposite to the arrow N. As a result, the intermediate link 71 rotates the lateral support shaft 70 in the direction opposite to the arrow Q, and moves the upper link 69 and the lower link 68 in the direction opposite to the arrow T. Accordingly, the driving pinion 67 rotates in the direction opposite to the arrow Q, so that the driven pinion 66 rotates in the direction opposite to the arrow R. As a result, the center plate 77 moves in the direction opposite to the arrow Y along the long rail 73 via the connecting arm 78 and the joint 79 (the position indicated by the chain double-dashed line), and the side plate 75 on the right side via the arm 75a.
Is displaced inward to return the right-side pantograph mechanism 14 to the original upright position.

As a result, the right pantograph mechanism 14
The upper link 69 and the lower link 6 with the extension displacement of the
The second and third bed plate parts 5 and 6 rotate around the hinge part 8 in the direction opposite to the arrow T via 8. As a result, as shown in FIG. 9, the bed part 3 returns from the use position to the normal position where the second and third bed plate parts 5, 6 are substantially horizontal. Similarly to this,
With respect to the first and second bed plates 4 and 5, as well, between the use position bent in a valley shape as shown by a chain double-dashed line in FIG. 10 and the normal position in a substantially horizontal state, by operating the push-button switch S2. Rotational displacement is performed by the above, and the same effect as that of the first embodiment can be obtained.

When the bed 3 is displaced from the normal position to the use position, the driven pinion 66 is driven by the motor 64 with a rod through the upper link 69 and the lower link 68 in the opposite direction to the driving pinion 67 (counter arrow R). Direction) and the connecting arm 78 is connected by the joint 79 to the central plate 77.
And the side plate 75 is slid along the long rail 73, and the lower end of the right pantograph mechanism 14 is displaced to the outside of the rectangular frame 1. Therefore, the pantograph mechanism 14 can be tilted to displace the first bed plate part 4 or the third bed plate part 6 in the direction of the use position (solid line position in FIG. 10). In order to realize the inclination of the pantograph mechanism 14, the power of the bed 3 generated by the electric motor 64 with a rod is used, and a relatively simple connecting member such as the driving pinion 67, the driven pinion 66, the upper link 69 and the lower link 68. It is also advantageous in terms of cost without increasing the size.

In the pillow support mechanism 40 of the second embodiment,
When the second and third bed plate parts 5 and 6 are displaced from the normal position to the use position, the link rod 49 moves in the direction indicated by arrow I in FIG. 11 due to the rotational displacement of the second and third bed plate parts 5 and 6. Rotate.
Therefore, as in FIG. 8, the right pillow plate portion 42 and the vertical support plate 4 are
4 rotates in the direction indicated by the arrow H, and the right pillow 56 is the middle pillow 5
It is convenient that the right head portion of the user U is supported by the right pillow portion 56 by being displaced so as to form a right angle with the right pillow portion 5. Further, as the first and second bed plates 4, 5 are displaced from the normal position to the use position, the left pillow plate part 41 and the vertical support plate 43 are rotated clockwise as in FIG. The pillow portion 54 is displaced so as to form a substantially right angle with the middle pillow portion 55, and the left side head of the user U moves to the left pillow portion 5.
Supported by 4.

The push-button switches S1 and S2 in the above embodiment can be operated by pressing the first,
The second bed plate portions 4 and 5 (second and third bed plate portions 5 and 6) may be set to be bent to a predetermined depth, or while the push button switches S1 and S2 are operated. Is the first and second bed plate parts 4 and 5 (second and third bed plate parts 5 and 6)
The bending displacement may be set to proceed. The push-button switches S1 and S2 are not limited to the push-button switches S1 and S2, and a switch incorporated in a remote-controlled or wire-operated control panel may be used. The control panel may be hooked on a predetermined portion of the bed 3, and may be detached and operated by an attendant at the request of the user U. When the bed part 3 is displaced from the normal position to the use position, the first and second bed plate parts 4,
The angle formed by 5 (second and third bed plate portions 5, 6) is 70
Any desired angle may be employed, such as degrees, 80 degrees, 90 degrees, 100 degrees, 120 degrees. In addition, in practicing the present invention, various changes can be made without departing from the spirit of the invention, such as not only the sick person with a physical disability but also a healthy person can use it on a daily basis.

[Brief description of drawings]

FIG. 1 is a front view of a body position conversion type couch device as viewed from the front (first embodiment).

FIG. 2 is a top view of the body position conversion type bed apparatus.

FIG. 3 is a top view showing the inside of the body position conversion type bed apparatus.

FIG. 4 is an enlarged perspective view showing a mechanism for moving the slide plate portions of the first and third bed plate portions.

FIG. 5 is an enlarged perspective view showing a mechanism for moving the slide plate portion of the second bed plate portion in the front portion.

FIG. 6 is an enlarged perspective view showing a mechanism for moving the slide plate portion of the second bed plate portion in the rear portion.

FIG. 7 is a front view showing the body position conversion type bed device together with the pillow support mechanism.

FIG. 8 is an enlarged perspective view of a pillow support mechanism.

FIG. 9 is a front view of the body position conversion type couch device as seen from the front part (second embodiment).

FIG. 10 is a front view showing a mode in which the body position conversion type bed device is displaced.

FIG. 11 is a front view showing the body position conversion type bed device together with the pillow support mechanism.

[Explanation of symbols]

1 square frame 2 Installation surface 3 bed section 4 First bed board part 5 Second bed board 6 Third bed board 7,8 Hinge part 14 Pantograph mechanism 19 First electric motor with rod (drive unit) 22 Second motor with rod (drive) 25 frames 26 Slide plate 34 links (link mechanism part) 35 Vertical link (link mechanism) 36 Horizontal link (link mechanism) 39 mattress 40 pillow support mechanism 41 Left pillow board 42 Right pillow 53 pillows 62 Support shaft 64 Electric motor with rod (drive unit) 66 Driven pinion 67 Drive Pinion 68 Down link (link) 69 Top link (link) 70 Horizontal support shaft 71 Intermediate link (link) 73 Long rail 75 armpit plate 77 Central plate 78 Connection arm 79 fittings 19a, 22a, 64a rod 70a auxiliary spindle S1, S2 push button type switch U user

Claims (17)

[Claims] 1. A bed part that is held in a substantially horizontal state at a predetermined distance from a frame placed on an installation surface, and the bed part is divided into at least three parts in a width direction by a line part along the height direction. First, second, and third bed plate portions that are formed by connecting the hinge bed portion to each other and are foldably rotatable with respect to each other, between the first bed plate portion and the frame, and the third bed plate portion. An expandable pantograph mechanism provided so as to be displaced between the bed plate part and the frame at a right angle or a substantially right angle with respect to the first and third bed plate parts, and one end part Is rotatably supported by the first bed plate part, and the other end is rotatably supported by the frame, and the rod is reciprocally displaced in the advancing / retreating direction so that the first bed plate part is Moving the pantograph mechanism with expansion and contraction displacement No. 1 electric motor with a rod, and the electric motor with a rod are arranged so as to intersect with each other. One end of the electric motor is pivotally supported by the third bed plate, and the other end thereof is rotated by the frame. A second electric motor with a rod that is pivotally supported so as to reciprocally displace the rod in the advancing and retreating direction and move the third bed plate part with the expansion and contraction displacement of the pantograph mechanism. By alternately energizing and driving the electric motor and the electric motor with the second rod, the first and second bed plate portions and the second and third bed plate portions are formed in a horizontal normal position and downward in a valley shape. A body position conversion type bed device, which is alternately displaced between a bending position and a use position. 2. The first and second electric motors with rods reciprocally displace the rods in the advancing / retreating direction by the rotation of screws incorporated therein, and the first and second electric motors of the bed section.
The body position conversion type couch device according to claim 1, wherein the third bed plate part is displaced between the normal position and the use position. 3. The first, second and third bed plate parts each include a frame and a slide plate part that is slidable laterally in the frame, and the first and second bed plate parts.
When the bed is displaced from the normal position to the use position by the electric motor with rod, the first and second
A link mechanism part for moving the slide plate parts of the bed plate part or the slide plate parts of the second and third bed plate parts in directions away from each other to absorb the positional deviation of the user. The body position conversion type bed device according to claim 1 or 2. 4. The link mechanism section, as the bed section is displaced from the normal position to the use position by the first and second electric motors with rods,
A link for transmitting the displacement of the first and second bed plates to these slide plate portions, and a link for transmitting the displacement of the second and third bed plate portions to these slide plate portions. The body position conversion type bed apparatus according to claim 3. 5. A left pillow plate portion and a right pillow plate portion provided at a front end portion of the second bed plate portion, the bed portion being the first pillow plate portion.
And a pillow support mechanism that alternately supports the left and right temporal regions of the user by the left pillow plate portion and the right pillow plate portion as the second electric motor with a rod is displaced from the normal position to the use position. The body position conversion type bed apparatus according to any one of claims 1 to 4. 6. The left pillow plate portion and the right pillow plate portion of the pillow support mechanism provided on the second bed plate portion of the bed portion and driven by the first and second electric motors with rods. The body position conversion type bed apparatus according to any one of claims 1 to 5, wherein a pillow is detachably attached to the bed. 7. A slide-adjustable push-button switch for controlling energization to the first and second electric motors with rods is provided at positions slightly retracted inward on the back surfaces of the left and right outer portions of the bed. The body position conversion type bed apparatus according to any one of claims 1 to 6, which is provided. 8. A body position changing type bed apparatus according to claim 1, wherein a pulley such as a door pulley is detachably attached to the outer bottom portion and can freely move on the installation surface. . 9. A bed part which is held in a substantially horizontal state at a predetermined distance from a frame placed on an installation surface, and the bed part is divided into at least three parts in a width direction by a line part along the height direction. First, second, and third bed plate portions that are formed by connecting the hinge bed portion to each other and are foldably rotatable with respect to each other, between the first bed plate portion and the frame, and the third bed plate portion. An expandable pantograph mechanism provided so as to be displaced between the bed plate part and the frame while forming an angle of a right angle or a substantially right angle with respect to the first and third bed plate parts; A support shaft that is provided in the central portion of the second bed plate portion in the longitudinal direction and that rotatably supports the second bed plate portion; and a link connected to the second bed plate portion via the support shaft. To rotate the bed plate of No. 2 around the support shaft. Ri said first and said second of the bed plate section second and third
2. A body position conversion type bed apparatus, comprising: a drive section for alternately displacing the bed board part of the above and a horizontal normal position and a use position where the bed plate part is bent downward in a valley shape. 10. The drive unit is composed of an electric motor with a rod, the rod incorporated therein is reciprocally displaced in a forward and backward direction by rotation of a screw, and the second bed plate unit is rotated via the link. The body position conversion type couch device according to claim 9, wherein the first, second and third couch plate parts of the couch part are displaced between the normal position and the use position. 11. The first, second, and third bed plate portions each include a frame and a slide plate portion that is slidable laterally in the frame, and the bed portion is driven by the drive unit. With the displacement from the normal position to the use position, the slide plate parts of the first and second bed plate parts or the slide plate parts of the second and third bed plate parts are moved in a direction of separating from each other. The body position conversion type bed apparatus according to claim 9 or 10, further comprising a link mechanism section configured to absorb a positional deviation of a user. 12. The link mechanism section shifts the displacement of the first and second bed plate sections as the bed section is displaced from the normal position to the use position by the drive section. The body position conversion type bed apparatus according to claim 11, wherein the bed position conversion type bed includes a link for transmitting the displacement of the second and third bed plates to the slide plates. 13. A left pillow plate portion and a right pillow plate portion provided at a front end portion of the second bed plate portion, and the bed portion being displaced from the normal position to the use position by the driving unit. The body position according to any one of claims 9 to 12, further comprising a pillow support mechanism that alternately supports the left and right temporal regions of the user by the left pillow plate portion and the right pillow plate portion. Convertible sleeper device. 14. A pillow can be freely attached to and detached from the left pillow plate portion and the right pillow plate portion of the pillow support mechanism provided on the second bed plate portion of the bed portion and driven by the drive unit. The body position conversion type couch device according to claim 9, wherein the couch device is attached to the body position conversion type couch device. 15. A slide-adjustable push-button switch for controlling energization to the drive unit is provided at a position slightly retracted inward on the back surface of the left and right outer sides of the bed. The body position conversion type bed device according to any one of claims 9 to 14. 16. A body position changing type bed apparatus according to claim 9, wherein a pulley such as a door pulley is removably attached to the outer bottom portion and can freely move on the installation surface. . 17. The drive unit includes a driving pinion and a driven pinion meshing with each other, an upper link and a lower link connected between the driving pinion and the support shaft, a lower end of the driven pinion and the pantograph mechanism. A connecting arm connected between the section and the joint, a central plate, a long rail and a side plate connected to the central plate, as the bed part is displaced from the normal position to the use position, The driven pinion rotates in the opposite direction to the driving pinion via the upper link and the lower link, and the connecting arm slides the center plate and the side plate along the long rail by the joint. The body position conversion type bedclothes according to claim 9, wherein a lower end portion of the pantograph mechanism is displaced outward. .