JPH07322939A - Bed with floor lifting mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a bed having a floor elevating mechanism whose mechanism is simplified. [Structure] In a bed, drive shafts 10 and 11 that move back and forth in the bed longitudinal axis direction from the hydraulic jacks 8 and 9 of the first and second hydraulic drive units 5 and 6 provided on the base frame 2 to the head side and the leg side. Is connected to the high-low link 7, and the high-low link 7 supports the main frame 3 on which the floor is placed via the swing link 12. The high-low link 7 has long and short arms 7L and 7S, and the short arm 7S is connected to the hydraulic jacks 8 and 9.
The long arm 7L is connected to the drive shafts 10 and 11 of the swinging link 1
Connect to 2. Further, an interlocking stay 13 is provided between the swing links 12 on the head side and the leg side of the main frame 3. [Effect] The structure can be simplified, good handling can be ensured by reducing the weight, and the manufacturing process can be shortened, so that the manufacturing cost can be suppressed.

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 lifting mechanism having a function of inclining the floor portion back and forth.

[0002]

2. Description of the Related Art Conventionally, a so-called Gatch bed in which a back bottom and a leg bottom are undulated has been widely adopted, and recently, in addition to this, a high-low Gatch bed in which the entire floor is moved up and down has been introduced. . further,
In addition, a product having a function of tilting the entire floor portion toward the head side or the leg side at a predetermined angle, such as so-called Trendelenburg and Riburstrendelenberg, has been commercialized. As for those having these functions, a hydraulic type and an electric type are becoming widespread in addition to a manual type in order to save labor because of a labor shortage of nurses in recent years. According to the bed having the above-mentioned functions, the floor can be adjusted to a desired holding position without any effort, so that it is possible to provide comfort in response to a patient's illness and treatment. It was possible to improve the convenience of use.

[0003]

On the other hand, on the other hand, when the above-mentioned mechanism is provided, the structure becomes complicated and the weight increases, and the handling operation is hindered, and the manufacturing process becomes complicated, and the manufacturing process becomes difficult. Controlling costs has become difficult. The present invention has been proposed in view of the above background, and an object of the present invention is to provide a bed including a floor portion lifting mechanism whose mechanism is simplified.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, in a bed provided with a floor elevating mechanism, a main frame on which a floor is placed is lifted and lowered by a floor elevating mechanism on a base frame. The floor raising / lowering mechanism is configured to support the first and second portions provided on the base frame.
And a high-low link that is rotationally displaced by the first and second hydraulic drive units, and the first and second hydraulic drive units are close to each other on the head side or the foot side of the main frame. The pedal for pedal operation provided, a jack operation stay for transmitting the operation force of the pedal for pedal operation, a hydraulic jack connected to the jack operation stay, and a forward and backward projection in the longitudinal direction of the bed from the hydraulic jack to the head side and the leg side. A drive shaft, the drive shaft is connected to the high-low link, and the main frame is connected to the high-low link via a swing link, and the first and second hydraulic drive units have different strokes. The main frame is tilted to the head side or the leg side of the bed at an appropriate angle by operating with, and the first and second hydraulic drive units are moved simultaneously and with the same stroke. It is not characterized by being configured to perform vertical lifting adjustment of the main frame.

[0005]

[Operation] Lifting and lowering the main frame with the floor,
Inclination to a desired direction at an appropriate angle can be performed by the first and second hydraulic drive units and the high-low link mechanism, which is simplified as compared with the conventional mechanism.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bed equipped with a floor raising / lowering mechanism according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a bed 1 provided with a floor portion elevating mechanism. The bed 1 supports a main frame 3 having a floor portion (not shown) placed on a base frame 2 so as to be able to ascend and descend via a floor portion elevating mechanism 4. It is configured.
The floor raising / lowering mechanism 4 includes first and second hydraulic drive units 5 and 6 provided on the base frame 2 and a high / low link 7 that is rotationally displaced by the first and second hydraulic drive units 5 and 6. To be done. The first and second hydraulic drive units 5 and 6 respectively include hydraulic jacks 8 and 9 and drive shafts 10 and 11 that move back and forth in the bed longitudinal axis direction from the hydraulic jacks 8 and 9 to the head side and the leg side. The drive shafts 10 and 11 are connected to the high / low link 7, and the high / low link 7 supports the main frame 3 via a swing link 12.
The high-low link 7 is rotatably attached to the base frame 2, and has long and short arms 7L and 7S which are perpendicular to each other.
And the short arm 7S is connected to the drive shaft 1 of the hydraulic jacks 8 and 9.
The long arm 7L is connected to the swing link 12. An interlocking stay 13 is provided between the swing links 12 on the head side and the leg side of the main frame 3. The interlocking stay 13 has a required mechanical strength,
To secure the rigidity, another interlocking stay may be provided so as to cross the interlocking stay 13 to further increase the strength.

With respect to the bed 1 having such a configuration, details of each component are shown in FIG. 2 and further described. First, in the base frame 2, the base frame 2 is a rectangular frame body corresponding to the size of the main frame 3, and a high-low link 7 constituting the floor elevating mechanism 4 is attached to the frame in the width direction. A projecting piece 14, a support member 15 for supporting the hydraulic jacks 8 and 9, and a mounting arm 16 for swingably supporting an operation pedal (described later) for operating the hydraulic jacks 8 and 9, respectively. is there. Casters 17 are attached to the four corners of the base frame 2.

Next, the first and second hydraulic drive units 5 and 6 will be described. The first and second hydraulic drive units 5 and 6 are attached to the mounting arm 1.
By depressing the operation pedals 18 and 19 provided in 6, the hydraulic jacks 8 and 9 are operated via the jack operation stays 20 and 21, and the drive shafts 10 and 11 are driven back and forth. The operation pedals 18, 19
Are provided close to the head side or the foot side of the main frame 3 so that they can be simultaneously operated. The hydraulic jacks 8 and 9 may have a known structure.

The bed 1 having the floor raising / lowering mechanism according to the present invention is constructed as described above, and its operation will be described below. When the main frame 3 is kept at the lowest position and the operation pedal 18 or the operation pedal 19 is depressed, the drive shaft 10, the drive shaft of the hydraulic jack 8 or the hydraulic jack 9 is driven through the jack operation stay 20 or the jack operation stay 21. When 11 is made to project with an appropriate stroke, the driving shaft 10 and the driving shaft 11 that have moved push in the short arm 7S of the high / low link 7, so that the high / low link 7 is displaced and is moved by the long arm 7L. The main frame 3 is raised at an appropriate angle via the swing link 12, and as a result, the main frame 3 is inclined toward the head side or the leg side of the bed (see FIG. 1).

On the other hand, the operation pedal 18 and the operation pedal 1
Depress 9 simultaneously and operate hydraulic jacks 8 and 9
When the drive shafts 10 and 11 of the above are projecting with the same stroke, the high and low links 7 are displaced at equal angles in mutually opposite directions, and the long arm 7L moves the main frame 3 to an appropriate height via the swing link 12. It can be moved vertically (see Fig. 3). In this way, the operation pedal 18 is used to raise and lower the main frame 3 on which the floor is placed and to tilt the main frame 3 toward the head side or leg side of the bed at an appropriate angle.
By depressing 19 to operate the hydraulic jacks 8 and 9 through the jack operation stays 20 and 21, the drive shafts 10 and 11 are driven back and forth, and the high and low links 7 are displaced, so that the mechanism can be performed. It is possible to bring about an effect that it is simple and easy to operate.

[0011]

As described above, according to the present invention, the structure can be simplified, the weight can be reduced, the good handleability can be secured, and the manufacturing process can be shortened. It is possible to obtain a special effect that the manufacturing cost can be suppressed, which is not found in the conventional bed of this type. Further, depending on how the floor elevating mechanism is operated, the floor can be tilted at a desired angle in addition to elevating, so that operability is good and usability is greatly improved.

[0012]

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a bed provided with a floor raising / lowering mechanism according to the present invention, and a virtual side view showing a state in which the floor is tilted in one direction.

FIG. 2 is an exploded perspective view showing a configuration of a main part of a bed provided with a floor lifting mechanism according to the present invention.

FIG. 3 is a schematic side-effect explanatory diagram showing an operating state when the floor portion is raised and lowered in the bed including the floor portion raising / lowering mechanism shown in FIG. 1.

[Explanation of symbols]

 1 bed 2 base frame 3 main frame 4 floor lifting mechanism 5 first hydraulic drive unit 6 second hydraulic drive unit 7 high-low link 7L long arm 7S short arm 8, 9 hydraulic jack 10, 11 drive shaft 12 swing link 13 interlocking Stay 14 Projection piece 15 Support member 16 Mounting arm 17 Casters 18, 19 Operation pedal 20, 21 Jack operation stay

Claims (1)

[Claims] 1. A bed provided with a floor raising / lowering mechanism, wherein a main frame on which the floor is placed is supported by a base frame so that the main frame can be raised and lowered by the floor raising / lowering mechanism, and the floor raising / lowering mechanism is mounted on the base frame. First and second provided
And a high-low link that is rotationally displaced by the first and second hydraulic drive units, and the first and second hydraulic drive units are close to each other on the head side or the foot side of the main frame. The provided pedal for pedal operation, the jack operation stay for transmitting the operating force of the pedal for pedal operation, the hydraulic jack connected to the jack operation stay, and the head jack and the leg side projecting forward and backward in the longitudinal direction of the bed from the hydraulic jack. A drive shaft, the drive shaft is connected to the high-low link, and the main frame is connected to the high-low link via a swing link, and the first and second hydraulic drive units have different strokes. The main frame is tilted to the head side or the leg side of the bed at an appropriate angle by operating with, and the first and second hydraulic drive units are moved simultaneously and with the same stroke. Bed with floor lifting mechanism, characterized in was that was configured to perform vertical lifting adjustment of the main frame is.