JP2002200122A - Bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed in which a person in a bed or rising state can take an article in the vicinity to a pillow without taking a stiff attitude. SOLUTION: The bed 100 comprises a plurality of bottoms 303 to 311 including a back bottom 303 and movably provided to a longitudinal direction of the bed 100, a back lifting mechanism 300 having a slide frame movably provided to the longitudinal direction of the upper frame 500 of the bed 100, a back lifting arm (back rising member) 331 rotatably provided at one end to the slide frame, extended at the other end side to the lower surface of the bottom 303 and movably engaging on the lower surface of the bottom 303, and a drive source provided at the frame 500 side of the bed 300 to rotate the back lifting arm 331.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed having a floor portion constituted by a plurality of bottoms including at least a back bottom, connecting adjacent bottoms to bendable, and having a back raising mechanism for raising and lowering the back bottom. About.

[0002]

2. Description of the Related Art FIG. 4 is a view showing the operation of a conventional bed having a back raising mechanism. In the figure, the floor 1 of the bed
Is composed of a back bottom 3, a waist bottom 5, a seat bottom 7, a knee bottom 9, and a leg bottom 11 which are connected to bendable.

[0003] The floor 1 is raised and lowered by pushing up the back bottom 3 and the waist bottom 5 using a back raising mechanism (not shown) (in a two-dot chain line state). In the bed shown in FIG. 4, the knee raising mechanism is also driven in conjunction with the back raising mechanism, and the knee bottom 9 and the leg bottom 11 are moved.
Is undulating.

[0004]

However, in the bed having the above structure, when the bed is in the undulating state shown by the two-dot chain line,
There is a problem that the upper body of the user moves forward and the side table 13 placed near the bedside cannot be reached.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bed which can take an object in the vicinity of a pillow without taking an unreasonable posture in a sleeping state or an undulating state. It is in.

[0006]

According to a first aspect of the present invention, a floor is formed of a plurality of bottoms including at least a back bottom, adjacent bottoms are connected to bendable and the back is connected to the bottom. In a bed having a back raising mechanism for raising and lowering the bottom, the plurality of bottoms are provided so as to be movable in a longitudinal direction of the bed, and the back raising mechanism includes:
A slide frame movably provided in the longitudinal direction of the bed frame; and a back end rotatably provided on the slide frame, the other end of which is movably engaged on the lower surface of the back bottom. A bed comprising a lifting member and a drive source provided on a frame side of the bed and rotating the back lifting member.

[0007] When a back-up member on the slide frame is rotated in a direction to push up by a drive source provided on the frame side of the bed, the entire bottom (floor portion) provided movably in the longitudinal direction of the frame is used. The back bottom undulates while sliding toward the head of the person.

[0008] Therefore, the object near the pillow can be taken without taking an unreasonable posture in both the bed state and the undulating state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view of the bed of the embodiment, FIG. 2 is a side view of the bed of FIG. 1, and FIG. 3 is a top view of FIG.

(Overall Configuration) The bed 100 has a lower frame 200 and an upper frame 500, and the upper frame 500 is raised and lowered with respect to the lower frame 200 by the lifting mechanism 400.

A floor 310 provided on the upper frame 500 is provided so as to be movable in the longitudinal direction of the bed, and the floor 310 has a back bottom 303, a waist bottom 305, and a seat bottom connected to bend. 307, knee bottom 3
09 and leg bottom 311.

Then, the back bottom 303 and the waist bottom 305 are raised and lowered by the back raising mechanism 300,
The knee bottom mechanism 309 and the leg bottom 311 are raised and lowered by the knee raising mechanism 600 which is linked with the above.

In the bed of this embodiment, the head of the user to be placed is on the H side, and the legs are on the L side. (Back-raising mechanism 300) The upper frame 500 is provided with a set of guide rails 301 along the longitudinal direction. These guide rails 301 include guide rails 30.
A slide frame 313 having a roller 312 that rolls on the top 1 is movably engaged.

The slide frame 313 includes a first frame 315 provided with rollers 312 rolling on one guide rail 301 and a second frame 317 provided with rollers 312 rolling on the other guide rail 301.
And a first shaft 319 whose both ends are rotatably supported by the first frame 315 and the second frame 317, and a second shaft 321 whose both ends are rotatably supported by the first frame 315 and the second frame 317. Has become.

First shaft 319 and second shaft 32
1, small arms 319a and 321a are attached to the first shaft 319 and the second shaft 321 by a connecting link 323 pin-connected to the small arms 319a and 321a. I have.

The first shaft 319 has a back bottom 303.
A pair of back raising arms 331 is provided as a back raising member extending to the lower surface of the arm. A guide 3 provided on the lower surface of the back bottom 303 is provided on the distal end side of the back raising arm 331.
A roller 331a that engages with the roller 13a is provided.

Therefore, the back raising arm 331 is movably engaged on the lower surface of the back bottom 303. Note that a roller 315 a that can roll on the back raising arm 331 is provided on the lower surface of the waist bottom 305.

On the other hand, on the head side (H) of the upper frame 500, a third shaft 341 whose both ends are rotatably supported is provided. At both ends of the third shaft 341, a set of a back-raising arm drive whose base end is attached to the third shaft 341 and whose distal end is pin-connected to a bracket 331 b provided at an intermediate portion of the back-raising arm 331. An arm 343 is provided.

Further, this third shaft 341 has
Arm 3 which is disposed between a pair of back-raising arm drive arms 343 and whose base end is attached to a third shaft 341
45 are provided.

A back of a first actuator 351 that performs a linear motion using a pin 503 is attached to a bracket 501 provided on the upper frame 500.
The output shaft 353 of the first actuator 351 is pin-coupled to the arm 345, the first actuator 351 is driven, and the output shaft 353 moves linearly, so that the third
The shaft 341 is designed to rotate.

When the third shaft 341 rotates, the back arm drive arm 343 rotates, and the back arm 331 is rotated.
Rotate about the first shaft 319 as a fulcrum. (Knee-raising mechanism 600) The base end of a pair of arms 601 is attached to the second shaft 321.
A roller 603 is provided on the distal end side of 01.

When the second shaft 321 rotates, the roller 603 can push up the lower surface of the knee bottom 309. Here, the operation of the back raising mechanism 300 and the knee raising mechanism 600 will be described.

When the first actuator 351 is driven,
The third shaft 341 and the back lifting arm drive arm 343 attached thereto rotate, and the back lifting arm 331 rotates about the first shaft 319 as a fulcrum.

With the rotation of the back raising arm 331, the slide frame 313 moves in the head side (H) direction, and the floor 310 provided on the upper frame 500 also moves in the head side (H) direction. The back bottom 303 and the waist bottom 305 move in the rising direction.

Further, with the rotation of the first shaft 319, the second shaft 321 also rotates via the connection link 323, and the arms 601 and 601 provided on the second shaft 321 are rotated.
The roller 603 rotates to push up the lower surface of the knee bottom 309.

(Elevating mechanism 400) Upper frame 500
Brackets 511, 5 on the head side (H) and leg side
A fourth shaft 410 and a fifth shaft 420 whose both ends are rotatably supported via 13 are provided.

The fourth and fifth shafts 410, 420
Are provided with a pair of arms 411 and 421 whose base ends are attached to the fourth and fifth shafts 410 and 420, and whose front ends are pin-connected to the upper frame 500 via brackets 521 and 523. .

Therefore, the upper frame 500, the lower frame 200, the arm 411, and the arm 421 form a parallel link mechanism. Also, the fourth shaft 4
The base end of the connection link 430 is rotatably attached to the 10 via an arm 413, and the tip end of the connection link 430 is rotatably attached to the fifth shaft 420 via an arm 423.

The back of a second actuator 431 that performs linear motion using a pin 533 is attached to a bracket 531 provided on the upper frame 500.
The output shaft 433 of the second actuator 431 is pin-connected to a bracket 441 provided on the connection link 430.

Here, the operation of the lifting mechanism 400 will be described. , The second actuator 431 is driven, and the output shaft 4
33 moves linearly, the connecting link 430 moves, and the fourth and fifth shafts 410 and 420 rotate,
The arms 411 and 421 rotate.

As the arms 411 and 421 of the parallel link mechanism rotate, the upper frame 500 moves up and down with respect to the lower frame 200. According to the above configuration, the first
When the actuator 351 rotates the back raising arm 331 on the slide frame 313 side in a direction to push up,
The entire floor 310 consisting of a plurality of bottoms movably provided in the longitudinal direction of the upper frame 500 is the head side (H).
The back bottom 303 and the waist bottom 305 undulate while sliding in the direction.

Accordingly, the object near the pillow can be taken without taking an unreasonable posture in both the bed state and the undulating state.

[0033]

As described above, according to the present invention, when the drive source provided on the frame side of the bed rotates the back lifting member on the slide frame side in the direction of pushing up, the bed can be moved in the longitudinal direction of the frame. The back bottom undulates while the entire plurality of provided bottoms (floor portions) slide toward the user's head.

Therefore, the object near the pillow can be taken without taking an unreasonable posture in both the bed state and the undulating state.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a bed according to an embodiment.

FIG. 2 is a side view of the bed of FIG. 1;

FIG. 3 is a top configuration diagram of FIG. 2;

FIG. 4 is a view showing the operation of a conventional bed having a back raising mechanism.

[Description of Signs] 100 Bed 300 Back raising mechanism 303 Back bottom 310 Floor section 313 Slide frame 331 Back raising arm (back raising member) 500 Upper frame

Claims (1)

[Claims] 1. A bed comprising a plurality of bottoms including at least a back bottom, a floor connected to adjacent bottoms in a bendable manner, and having a back raising mechanism for raising and lowering the back bottoms. Is provided so as to be movable in the longitudinal direction of the bed, and the back raising mechanism is provided with a slide frame movably provided in the longitudinal direction of the frame of the bed, and one end rotatably provided on the slide frame. A back-up member, the other end of which is movably engaged on the lower surface of the back bottom; and a drive source provided on the frame side of the bed, for rotating the back-up member. And bed.