JP2000279274A - Device for raising and lowering backrest portion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for raising and lowering a backrest portion that can promote comfortable and sound sleep by providing a bed with inclinations at which individual human bodies are easy to sleep. SOLUTION: A right drive means 18 and a left drive means 13 by which a right back-raising arm 8 and a left back-raising arm 7 freely risably provided on the right and left of a frame 1 are individually driven to rise or fall are provided, and the driving distances of the right drive means 18 and the left drive means 13 are varied to operate the right back-raising arm 8 and the left back-raising arm 7 differently. A device for raising and lowering a backrest portion can thus be provided which can promote comfortable and sound sleep by tilting a backrest frame to the right or left and thereby providing the bed with an inclination at which it is easier to sleep.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for raising and lowering a backrest portion of a bed, the backrest portion of which can be tilted leftward or rightward when the backrest portion is raised.

[0002]

2. Description of the Related Art Hitherto, as an example of this type of backrest raising / lowering device, a device described in Japanese Patent Publication No. 4-56610 has been known.

[0003] Hereinafter, the configuration of the device for raising and lowering the backrest will be described with reference to FIG.

[0004] As shown in FIG.
1 is provided with an elliptical arc-shaped curved rod 102, and an elliptical arc-shaped curved rod 10 is provided.
2 is driven by the drive mechanism 103 to raise the backrest holding frame 101.

[0005]

In such a conventional device for raising and lowering a backrest, the frame 101 for holding the backrest stands upright at various angles toward the longitudinal direction of the bed 104. There is a problem that the upper body of the human body cannot be tilted to the left or right so that it is easy to perform.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an apparatus for raising and lowering a backrest portion, which imparts an easy-to-sleep inclination that a human body individually has to a bed to promote comfortable sleep. And

[0007]

In order to achieve the above object, the apparatus for raising and lowering a backrest according to the present invention raises and lowers the left and right sides of the base so as to raise the backrest of a bed frame placed on the base. A left-hand raising arm and a right-hand raising arm freely provided; and left-hand driving means and right-hand driving means for individually driving the left-hand raising arm and the right-hand raising arm individually to raise and lower. Are varied so that the driving distances of the left and right back-raising arms are different from each other, and the backrest frame is inclined leftward or rightward.

According to the present invention, it is possible to provide an apparatus for raising and lowering the backrest portion, which gives a bed a tilt that a human body can easily sleep and promotes a comfortable sleep.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a left-hand raising arm and a right-hand raising arm which are provided to be able to stand on the left and right sides of the base so as to raise the backrest frame of the bed frame placed on the base. A left driving unit and a right driving unit for individually driving the left back raising arm and the right back raising arm up and down, and the left driving unit and the right driving unit change the driving distance between the left driving unit and the right driving unit so as to be different. The standing angle of the arm and the right-side raising arm are made different, and the backrest frame is inclined leftward or rightward.The backrest can be inclined leftward or rightward, and the human body is in an easy-to-sleep state. This has the effect of promoting a comfortable sleep.

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

[0011]

(Embodiment 1) As shown in FIGS. 1 to 7, a support base 2 is provided at a substantially central portion of a frame-shaped gantry 1 in a longitudinal direction.
Both the backrest frame 3 and the buttocks frame 4 flexibly connect the leg frames 5 including the thighs and the knees and the like so that the backrest frame 3 of the bed frame 6 placed on the gantry 1 stands. A left back raising arm 7 and a right back raising arm 8 are provided on the left and right sides of the base 1 so as to be able to stand up. The left back raising arm 7 is swingably attached to a left mounting portion 10 provided on the support base 2 via a left connecting rod 8. The left motor 11 is connected to an end of a left drive shaft 12 of a left drive means 13 comprising a left and right rotatable motor 11 and a drive shaft 12 driven by the left motor 11 to be able to advance and retreat in the longitudinal direction of the gantry 1. The left drive shaft 12 is provided so that the left back-raising arm 7 can be raised and lowered via the left connecting rod 9 in the longitudinal direction of the gantry 1 by the forward or reverse rotation of 11.

The right back raising arm 8 is connected to a right mounting portion 15 provided on the support base 2 via a right connecting rod 14 so as to be swingable. The right drive means 18 is connected to the end of the right drive shaft 17 of the right drive means 18 composed of the right drive shaft 17 driven in the longitudinal direction of the gantry 1. The right back raising arm 8 is provided so as to be raised and lowered via the right connecting rod 14 before and after the direction, and a roller 19 is provided at an end of the left back raising arm 7 and the right back raising arm 8.

A pair of knee raising arms 21 supported on a supporting member 20 provided on the gantry 1 so as to be able to stand up is provided, and is connected to a driving shaft 23 driven by a knee raising motor 22 provided on the supporting member 20. ing.

The backrest frame 3 of the bed frame 6 has a cylindrical backrest pipe 2 between the left and right side frames 24.
5, a back pipe 25 is provided at an end with a holding body 28 on which a guide pin 27 connected to a universal joint 26 attached to the side frame 24 is slidably held.
The guide pin 27 is connected to the back pipe 25 by the universal joint 26.
A spring 29 for returning to the side is provided to form the expansion / contraction means 30.

In the above configuration, when the backrest frame 3 is to be erected, the left motor 11 and the right motor 16 are simultaneously energized through a control device (not shown) or the like to rotate forward. The raising arm 7 is raised, and the right back raising arm 8 is raised via the right-side driving means 18 so that the backrest frame 3 of the bed frame 6 is both raised at the set angle.

When the user wants to tilt the backrest frame 3 leftward in this state, the left motor 1
The backrest frame 3 can be tilted to the left by rotating the backrest 1 in the reverse direction so that the upright angle QA of the left back up arm 7 is smaller than the upright angle QB of the right back up arm 8. Further, the right motor 16 of the right driving means 18 is further rotated forward to make the upright angle QB of the right back up arm 8 larger than the upright angle QA of the left back up arm 7, thereby tilting the backrest frame 3 to the left. it can.

Further, the control device sets the upright angle QA of the left back-raising arm 7 smaller than the upright angle QB of the right back-raising arm 8, or sets the right back-raising arm 7 to the right back-raising angle QA. By setting the rising angle QB of the arm 8 to be large, the backrest frame 3 can be raised in a state inclined to the left.

When it is desired to tilt the backrest frame 3 to the right, the upright angle QB of the right back-raising arm 8 is made smaller than the upright angle QA of the left back-raising arm 7 to tilt the backrest frame 3 to the right. it can.

When the backrest frame 3 stands up to the left or right, the lower portion of the backrest frame 3 is connected to and held by the buttocks frame 4.
The distance L1 between the lower ends of the side frames 24 is always constant, but the distance L2 between the upper ends of the side frames 24 is constant.
The distance L2 between the upper ends of the side frames 24 is larger than the distance L1 between the lower ends of the side frames 24 in accordance with the inclination of the backrest frame 3 to the left or right. At this time, the length of the backrest pipe 25 provided on the backrest frame 3 is adjusted by the expansion / contraction means 30 so that the right or left inclination of the backrest frame 3 can be dealt with without twisting.

As described above, according to the device for raising and lowering the backrest portion of the first embodiment of the present invention, the left and right back raising arms 7 and 8 provided to be able to stand on the left and right sides of the gantry 1 are individually driven to raise and lower. Driving means 13 and right driving means 1
8, the standing angle of the left back raising arm 7 and the right back raising arm 8 can be changed, and the backrest frame 3 of the bed frame 6 can be tilted to the left or right to stand. The bed can be provided with an easy-to-sleep inclination to promote comfortable sleep.

Further, since the backrest frame 3 is formed by providing the backrest pipe 25 having the expansion / contraction means 30 to the side frames 24 on which the backrest frame 3 is provided on the left and right sides, the backrest frame 3 is inclined leftward or rightward. Can be performed smoothly.

(Embodiment 2) As shown in FIGS.
A first fulcrum hole 32, a second fulcrum hole 33, and a second fulcrum hole 33 are provided at predetermined intervals on a bed frame 6A on which a side frame 24A of a backrest portion frame 3A is provided so as to be able to undulate. 3 fulcrum holes 34
Are provided stepwise, and a first engagement hole 35 is provided in the vicinity of a lower portion of the side frame 24A, and a second engagement hole 36 and a third engagement hole 36 are provided at a predetermined interval from the first engagement hole 35. Are provided stepwise, and a support member 38 such as a pin inserted and held in the fulcrum hole and the engagement hole and supporting the side frame 24A so as to be able to stand up is provided.

A shutter 39, which forms a portion corresponding to the buttocks and feet on the side of the back frame 6A of the bed frame 6A, is provided so as to be freely windable so that the length can be adjusted on the feet.

In the above-described configuration, when the backrest frame 3A is made to correspond to a person with a high sitting height, the first engagement hole 35 of the side frame 24A is engaged with the first fulcrum hole 32 provided in the bed frame 6A. The member 38 is inserted and supported to form the upright fulcrum 31 of the side frame 24A, and the backrest frame 3
At the time of the standing of A, the backrest frame 3A is raised in a state (A) where the dimension exposed from the bed frame 6A is the longest (A).

When the backrest frame 3A is made to correspond to a person having a low sitting height, the third engagement hole 3 provided in the side frame 24A is formed in the third fulcrum hole 34 provided in the bed frame 6A.
7, the support member 38 is inserted and supported, and the upright fulcrum 31 is moved to the position where the upright fulcrum 31 of the side frame 24A is moved.
A, and the bed frame 6 is formed when the backrest frame 3A stands up.
The backrest frame 3A is erected in a state (B) where the dimension exposed from A is the shortest.

At this time, the upright fulcrum 31 is attached to the backrest frame 3.
By moving to the A side, a space is formed between the first fulcrum hole 32 and the third fulcrum hole 34 of the bed frame 6A, so that the shutter 39 provided to be able to be wound up so as to cover the space is pulled out and closed. I do.

As described above, according to the device for raising and lowering the backrest portion of the second embodiment of the present invention, the fulcrum hole provided in the bed frame 6A and the engagement provided in the side frame 24A of the backrest frame 3A in a stepwise manner. By changing the engagement position with the hole, the upright fulcrum 31 of the backrest frame 3A moves and changes, and the length of the backrest frame 3A rising from the bed frame 6A can correspond to the sitting height of the person. This makes it possible to prevent a person sleeping on the floor from feeling uncomfortable and prevent the body from being deviated from a predetermined position.

The upright fulcrum 3 of the side frame 24A
Since the space created in the bed frame 6A when the 1 is moved is covered by the shutter 39, it is possible to reduce anxiety due to depression of the body due to the formation of the space.

(Embodiment 3) As shown in FIGS. 11 to 14, a rail 40 is provided on the bed frame 6B in the longitudinal direction of the bed frame 6B near a fulcrum where the side frame 24B of the backrest frame 3B stands. Is provided with a bed-side slide member 41 which is slidable and can be locked at a predetermined position. The side frame 24B of the backrest portion 3B has a bendable fulcrum conversion member 42 such as a chain at the end, and is exposed above the bed frame 6B. A frame-side slide member 43 slidably engaged with the side frame 24B is provided so as to prevent bending of the fulcrum conversion member 42, and the end of the fulcrum conversion member 42 provided on the side frame 24B is a bed of the backrest frame 3B. The fulcrum 44 of the bed frame 6B, which is on the side opposite to the backrest frame, so that it can stand up with the length exposed from the frame 6B being the longest.
Support it upright.

In the above configuration, when the backrest frame 3B corresponds to a person with a high sitting height, the bed-side slide member 41 sliding on the rail 40 provided on the bed frame 6B is moved from the fulcrum 44 to the side opposite to the backrest frame. As a result, the side frame 24B of the backrest frame 3B is
In a state in which the support member 2 has an end portion, the bending of the fulcrum conversion member 42 is prevented by the frame side slide member 43, and the portion exposed from the bed frame 6B has the longest dimension # 2. The backrest frame 3B can be formed.

When the backrest frame 3B corresponds to a person with a low sitting height, the bed-side slide member 41 is moved to the backrest frame 3B, and the position where the side frame 24B of the backrest frame 3B stands up from the fulcrum 44. The bed side slide member 41 is moved to the rail 4 so as to move to the fulcrum 45.
When the backrest frame 3B is raised, the backrest frame 3B is erected in a state of a dimension # 1 having the shortest dimension exposed from the bed frame 6B when the backrest frame 3B is erected.

Further, by setting the fulcrum position of one side frame 24B of the left and right side frames 24B of the backrest frame 3B different from the fulcrum position of the other side frame 24B, the backrest frame 3B can be moved leftward or rightward. Can be tilted in any direction.

As described above, according to the backrest raising / lowering device of the third embodiment of the present invention, the bendable fulcrum conversion member 4 provided at the end of the side frame 24B of the backrest frame 3B.
2, a bed-side slide member 41 slidably provided on a rail 40 provided on the bed frame 6B, and a fulcrum conversion member 4
2 and a frame-side slide member 43 that linearly supports the side frame 24B, and the fulcrum at which the fulcrum conversion member 42 stands can be changed. Therefore, the backrest frame is slid by the slide operation of the bed-side slide member 41 and the frame-side slide member. The height of the 3B can be easily adjusted so as to accommodate a person with a high sitting height or a person with a low sitting height.

Further, by making the fulcrum where the side frame 24B of the backrest portion frame 3B stands up at different positions in the left and right side frames 24B, the backrest portion frame 3B
You can tilt yourself to the left or right.

(Embodiment 4) As shown in FIG. 15, one is locked to the backrest frame 3C and the other is locked so as to cover the space formed between the bed frame 6C and the backrest frame 3C when standing. A bellows-shaped cover 46 locked to the bed frame 6C is provided.

In the above configuration, when the backrest portion frame 3C provided on the bed frame 6C is erected, the bed frame 6C
Then, the bellows-shaped cover 46 locked to the backrest frame 3C opens to cover the space between the bed frame 6C and the backrest frame 3C.

When the backrest frame 3C is turned down, the cover 46 is folded by a bellows-like function and stored in the bed frame 6C.

As described above, according to the backrest raising / lowering device of the fourth embodiment of the present invention, the bellows-like cover 46 is provided so as to cover the space formed between the bed frame 6C and the backrest frame 3C when standing. Therefore, it is possible to prevent the belongings or the like from falling into the bed frame 6C.

(Embodiment 5) As shown in FIG. 16, the side frame 24 at the portion where the head of the backrest frame 3D is placed
C, a head leaning frame 48 is provided via a support base 47 so as to be able to stand upright at a fulcrum, and one end is attached to a side plate 49 of the head leaning frame 48 at one end of the side frame 24C. A holding portion 52 slidably held by a support bar 51 rotatably provided on a plate 50 is rotatably mounted via a mounting portion 53 to form a head raising means 54.

In the above configuration, when the head leaning frame 48 is to be erected, the upper part of the head leaning frame 48 is lifted upward, so that the head leaning frame 48 is erected through the support table 47. At this time, the head raising means 54
The support rod 51 is slid on the holding portion 52, and at the upright position, the support rod 51 is held by the holding portion 52, and the head leaning frame 48 is held upright.

When it is desired to lay down the head leaning frame 48, the head leaning frame 48 is opposed to the holding force of the holding portion 52.
Is pressed down, the head leaning frame 48 is turned down.

As described above, according to the backrest raising / lowering device of the fifth embodiment of the present invention, the headrest frame 48 is provided on the backrest frame 3B, and the headrest frame 4 is provided via the head raising means.
8 can be erected, so you can sleep in a natural body with your head slightly raised.

(Embodiment 6) As shown in FIG. 17, the lower ends of the left and right side frames 24D of the backrest frame 3E are provided on the bed frame 6D via the universal joint 55 so as to be able to stand upright.

In the above configuration, when the right-side upright angle Q2 is set to be larger than the left-side upright angle Q1 so that the backrest frame 3E is turned to the left, the right and left side frames 24D are positioned between the left and right side frames 24D. The upper ends of the left and right side frames 24D are inclined with respect to the distance 〓1 of the lower ends of the left and right sides, and the distance between the upper ends of the left and right side frames 24D tends to increase. Since it is provided on the bed frame 6D, the right side frame 24D having a large upright angle moves about the upper end of the left side frame 24D as a fulcrum along the locus of the same dimension # 2 as the distance # 1 on the lower end side, and the right and left sides. Back pipe 2 provided between side frames 24D
5 is a fixed length.

As described above, according to the backrest raising / lowering device of the sixth embodiment of the present invention, the side frame 24D is provided on the backrest frame 3E via the universal joint 55 so as to be able to stand upright on the bed frame 6D. Even if the right and left side frames 24D are made to stand at different angles when the frame 3E is tilted to the left or right, the distance between the left and right side frames 24D tends to increase due to the oblique upper end. This is suppressed by the universal joint 55, and the side frame 24D has the same interval on both the lower end side and the upper end side, so that it is not necessary to make the backrest pipe provided on the backrest frame 3E extendable, and the structure of the backrest portion is reduced. It can be simplified.

[0046]

As is clear from the above embodiments, according to the present invention, the left back is provided on the left and right sides of the gantry so that the backrest frame of the bed laid on the gantry can be erected. An upright arm and a right upright arm, and left and right driving means for individually raising and lowering the left upright arm and the right upright arm. The driving distances of the left and right driving means are different. By varying the standing angle of the left back-raising arm and the right back-raising arm by changing the backrest frame to the left or right side, the bed is given a tilt that is easy for the human body to have individually, It is possible to provide a device for raising and lowering the backrest portion that can promote comfortable sleep.

Further, since the backrest frame of the bed frame is formed of a backrest pipe having expansion and contraction means for expanding and contracting left and right, the backrest frame can be smoothly tilted to the left or right.

Also, since the position of the fulcrum of the backrest frame provided on the bed frame so as to be freely raised can be changed to change the exposure length of the backrest frame, it is possible to cope with the sitting height of the person, It will not give a strange feeling to those who are.

Further, since the bed portion on the side opposite to the backrest portion of the backrest frame provided to be able to stand upright on the bed frame is formed by a windable shutter, the space between the backrest frame and the backrest frame can be covered with the shutter. Can reduce the feeling of anxiety caused by depression of the body.

Further, a fulcrum converting portion which is provided at the end of the side frame of the backrest portion frame so as to be freely bent and whose lower portion is rotatably provided on the bed frame, and a bed side slide which slides on a rail provided on the bed frame. Member, a frame-side slide member provided to hold the fulcrum conversion member provided on the side frame in a straight line with the side frame,
Since the fulcrum at which the fulcrum conversion member stands can be changed by the sliding operation of the bed-side slide member and the frame-side slide member, it is easy to respond to a person with a high sitting height or a low person with a simple operation of sliding the slide member. can do.

Further, since the fulcrum where the left and right side frames of the backrest frame stand are at different positions and the backrest frame is tilted left or right, the backrest frame itself can be tilted left or right.

Further, since a cover having a bellows function for covering a space formed between the bed frame and the back frame when the back frame is raised is provided between the bed frame and the back frame, the belongings etc. It can be prevented from falling inside.

Also, a headrest frame supported by the side frame is provided at a portion corresponding to the head of the backrest frame,
Since the head leaning frame is configured to be erected by the head erecting means, it is possible to sleep on a natural body with the head slightly raised.

Further, since the left and right side frames of the backrest frame are provided on the bed frame via the universal joint so as to be able to stand upright, it is not necessary to make the backrest pipe provided on the backrest frame extendable and contractible. The structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a gantry of a device for raising and lowering a backrest according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a bed frame of the undulating device for the backrest.

FIG. 3 is a side view showing a state in which the bed frame of the raising / lowering device of the backrest portion is turned down.

FIG. 4 is a side view showing a state where the bed frame of the up-and-down device of the backrest part is standing up;

FIG. 5 is a cross-sectional view showing a configuration of a backrest pipe portion of the undulating device of the backrest portion.

FIG. 6 is a schematic perspective view showing an upright state of a back-raising arm of the device for raising and lowering the backrest.

FIG. 7 is a schematic perspective view showing an upright state of a side frame of the undulating device for the backrest.

FIG. 8 is a schematic perspective view showing a configuration of a bed frame of a device for raising and lowering a backrest according to a second embodiment of the present invention.

FIG. 9 is an exploded view showing a relationship between a bed frame and a side frame of the undulating device for the backrest.

FIG. 10 is a schematic view showing a state in which the fulcrum of the backrest frame of the backrest device is changed.

FIG. 11 is a schematic diagram showing a state in which the backrest of the backrest undulating device according to the third embodiment of the present invention is elongated.

FIG. 12 is a schematic diagram showing a state where the backrest of the backrest unit is shortened;

FIG. 13 is a schematic diagram showing a state in which the fulcrum of the up-and-down device of the backrest is changed.

FIG. 14 is a schematic diagram showing a state in which left and right side frames of the undulating device of the backrest portion are at different positions.

FIG. 15 is a partially enlarged view showing a configuration of a device for raising and lowering a backrest according to a fourth embodiment of the present invention.

FIG. 16 is a partially enlarged perspective view showing a configuration of a device for raising and lowering a backrest according to a fifth embodiment of the present invention.

FIG. 17 is a perspective view showing the configuration of a backrest frame of a backrest undulating device according to a sixth embodiment of the present invention.

FIG. 18 is a side view showing the configuration of a conventional backrest undulating device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base 3 backrest frame 3A backrest frame 3B backrest frame 3C backrest frame 3D backrest frame 3E backrest frame 6 bed frame 6A bed frame 6B bed frame 6C bed frame 6D bed frame 7 Arm 13 Left drive means 18 Right drive means 24B Side frame 24C Side frame 24D Side frame 25 Back pipe 30 Extending means 31 Standing fulcrum 31A Standing fulcrum 39 Shutter 40 Rail 41 Bed side slide member 42 Support point conversion member 43 Frame side slide member 44 Support point 45 fulcrum 46 cover 48 head leaning frame 54 head raising means 55 universal joint

Claims (9)

[Claims] 1. A left back raising arm, a right back raising arm, and a left back raising arm provided to be able to stand upright on the left and right sides of the base so as to raise a backrest frame of a bed frame placed on the base. And left driving means and right driving means for individually raising and lowering the right back raising arm,
A backrest configured to vary the drive distance between the left-hand drive means and the right-hand drive means so that the left back-raising arm and the right back-raising arm have different standing angles to tilt the backrest frame to the left or right. Hoisting equipment. 2. The backrest raising and lowering device according to claim 1, wherein the backrest frame of the bed frame is formed of a backrest pipe having expansion and contraction means for expanding and contracting left and right. 3. The device for raising and lowering a backrest portion according to claim 1, wherein the position of the fulcrum of the backrest portion frame, which is provided on the bed frame so as to be freely raised, can be changed to change the exposed length of the backrest portion frame. 4. The device for raising and lowering a backrest portion according to claim 1, wherein the bed portion on the side opposite to the backrest portion of the backrest portion frame provided on the bed frame so as to be able to stand up is formed by a windable shutter. 5. A fulcrum conversion member provided at an end of a side frame of a backrest frame so as to be bent and a lower portion provided rotatably on a bed frame, and a bed-side slide sliding on a rail provided on the bed frame. And a frame-side slide member provided so as to linearly hold the fulcrum conversion member provided on the side frame with the side frame. The fulcrum conversion is performed by sliding the bed-side slide member and the frame-side slide member. 2. The backrest raising / lowering device according to claim 1, wherein a fulcrum on which the member stands is variable. 6. The backrest raising and lowering device according to claim 5, wherein the fulcrum of the left and right side frames of the backrest frame is set at different positions to tilt the backrest frame leftward or rightward. 7. The backrest according to claim 1, wherein a cover having a bellows function is provided between the bed frame and the backrest frame so as to cover a space formed between the bed frame and the backrest when the backrest frame rises. Hoisting equipment. 8. A headrest frame supported by a side frame is provided at a portion corresponding to the head of the backrest frame, and the headrest frame is raised by head raising means. The device for raising and lowering the backrest as described in the above. 9. The bed frame according to claim 1, wherein the left and right side frames of the backrest frame are provided on the bed frame via universal joints.
The device for raising and lowering the backrest as described in the above.