JPH042053B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bed, particularly a rehabilitation bed suitable for standing and walking training.

[Prior art and its problems] Conventionally, when a person gets up from the bed and tries to walk while standing on the floor, one has to move the hips to the side of the bed before touching the floor. I couldn't do it.

Particularly for patients who require rehabilitation training, the movement of the lower back is a great burden.

In order to eliminate this inconvenience, the leg part of the bed lowers than before, allowing the patient to raise himself up to a sitting position without shifting his body, and then stand up from the lowered part or return to the sitting position. A bed that is convenient for defecating has been developed.

However, even with this type of improved bed, the height of the descending part where the feet are attached is not the same as the floor surface, and there is a step, so when using it for walking training, it is difficult to avoid obstacles caused by this step. Not only can you not move forward or have to walk on the lowered bed at first, which makes your feet unstable, but especially when you stand up and start walking, the handrails are not in the proper position, which ultimately makes walking training difficult. The problem was that it was not useful.

[Object of the Invention] The present invention has been made in order to solve the above-mentioned conventional problems. To provide a new bed with handrails that can stably support the bed.

[Structure of the Invention] The lower mattress that holds the legs of the human body is divided into two parts in the left and right direction of the bed, and each of the two divided lower mattresses is supported by two descending parts. The two descending opening parts are supported by a parallel link mechanism that allows the bed to move up and down at the same time while maintaining a horizontal state, and are located diagonally upward and inward from the left and right main frames of the lower mattress divided into two parts. The handrail was made to protrude.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a main frame made of an angle member having an L-shaped cross section, for example, and is disposed on the left and right sides of the bed. The rear end (head side) of the main frame 1 is integrally connected by a headboard 2, and the intermediate part is integrally connected by a connecting frame 3.

Below the main frame 1, an auxiliary frame 4 made of, for example, a square pipe is arranged in parallel. Leg plates 5 are attached to the front ends (leg sides) of the main frame 1 and the auxiliary frame 4.

Reference numeral 6 denotes an upper mattress, which is raised from a horizontal position as shown in the figure by a conventionally known actuating means (not shown) and functions as a backrest when the upper body of a human body (patient) is raised.

The central portion 6' of the upper mattress 6, which supports the patient's lower back, is preferably removed during defecation to accommodate a toilet bowl.

The lower mattress 7 that supports the patient's legs is divided into left and right movable mattresses 7a and 7b.

FIG. 3 is a diagram showing the operating mechanism with the movable mattresses 7a, 7a removed, and basically shows the parallel link mechanism section 8 and the parallel link mechanism section 8.
It is composed of a descending part 9 that opens left and right while descending due to the action of.

As is clear from FIG. 4, the parallel link mechanism section 8 is composed of two parallel links 8a and 8b and an operating piece 8e connected to the tips of these links by pin joints 8c and 8b. At the same time, the base end of the parallel link 8a is fixed to the rotary drive shaft 10, and the base end of the parallel link 8b is pivotally connected to the main frame 1 etc. by a pivot pin 8f.
The rotary drive shaft 10 is also rotatably attached to the main frame 1 and the like. Furthermore, the parallel link 8
The lengths a and 8b, that is, the distance between the pin joint 8c and the rotary drive shaft 10 are equal to the distance between the pin joint 8d and the pivot pin 8f, and the distance between the rotary drive shaft 10 and the pivot pin 8f is equal. , the distances between both pin joints 8c and 8d are equal, and they constitute a parallel link mechanism as a whole.

Therefore, when the rotary drive shaft 10 is rotationally driven, as shown in FIG. 4, the actuating piece 8 moves from the solid line state to the imaginary line state while maintaining its posture, so that it becomes integral with the actuating piece 8e. As shown in the figure, the lower opening part 9 also moves to open left and right while descending while maintaining a horizontal state.

As is clear from FIG. 4, the parallel link 8d is bent into a trapezoidal shape so as not to interfere with the auxiliary frame 4 when pivoted downward.

FIG. 5 shows the drive mechanism of the rotary drive shaft 10, and shows the output shaft 11a of the electric motor 11.
A left and right screw shaft 12 is connected to the left and right screw shafts 12 via a joint 11b.

The left and right threaded shafts 12 are symmetrically threaded in opposite directions, and the movers 13 are screwed into each shaft. The mover 13 is pin-coupled to an operating piece 15 fixed to the rotary drive shaft 10 via a connecting rod 14 .

Therefore, when the electric motor 11 is operated, the left and right screw shafts 12 rotate, and along with this, the mover 1
3 move toward and away from each other along the left and right screw shafts 12. When the slider 13 moves, the rotary drive shaft 10 rotates via the connecting rod 14 and the actuating piece 15, as shown in FIG.
The parallel link mechanism section 8 is operated.

In Figures 1 and 2, reference numeral 25 denotes a handrail that protrudes diagonally upward and inward from the left and right main frames 1, and the lower pinerest supporting the legs opens and extends toward the front of the bed. The floor surface appears,
When you put your feet on the floor and stand up, or when you start walking towards the front of the bed, please use the handrail 2.
He is now able to maintain stability by rubbing the 5 and leaning his body against it. This handrail 25 is designed to be removable.

[Effects of the Invention] The handrails protrude diagonally upward and inward from the left and right main frames of the bed, so when walking along the open floor in front, it is easy to grab them with your hands or lean your body against them. You can practice walking while maintaining your stability.

[Brief explanation of drawings]

Fig. 1 is an external view showing one embodiment of the bed of the present invention, Fig. 2 is a plan view showing the main parts of the mechanism, Fig. 3 is a perspective view of the main parts of the mechanism, and Fig. 4 is an explanation of the operation of the downward opening mechanism. FIG. 5 is an explanatory diagram of the operation of the drive mechanism. 1...Main frame, 2...Headboard, 3...
...Connection frame, 4...Auxiliary frame, 5...Leg plate, 6...Upper pine rest, 7...Lower pine rest, 7a...Movable pine rest, 8...Parallel link mechanism, 9...Descent section, 10... Rotary drive shaft, 11
...Electric motor, 12...Left and right screw shaft, 13...
Mover, 14... Connecting rod, 15... Operating rod, 25
……handrail.

Claims (1)

[Claims] 1. The lower mattress that holds the legs of the human body is divided into two parts in the left and right direction of the bed, and each of the two divided lower mattresses is supported by two lowering parts. The bed is supported by a parallel link mechanism that allows the bed to move up and down at the same time while maintaining a horizontal position, and at the same time, a handrail is placed diagonally upward and inward from the left and right main frames of the lower pinerest, which is divided into two parts. Betsudo characterized by letting it come out.