JP3088869B2 - Swing bed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a swing bed.
In particular, the present invention relates to a rocking bed provided with a rocking guide link mechanism so that a large rocking angle can be obtained.

[0002]

2. Description of the Related Art Conventionally, severely ill patients or patients who have been subject to long-term body movement limitation (paralysis-resistant patients, people with injured heads, people with complex sclerosis, people with broken back columns, and patients with voluntary movements) Various complications (depressive pneumonia, atelectasis, thrombophlebitis) due to the inability of the disabled or severely injured patients, including involuntary spasm movements, to keep the patient from moving; , Pulmonary embolism, urolithiasis, urinary tract infections, pressure ulcers, osteoporosis, muscle wasting, ectopic bone formation, constipation and fecal stool, orthostatic hypotension) In order to prevent various complications, a swing bed provided with a swing bed has been proposed.

FIG. 3 shows such a swinging bed, which includes a gantry 1 with casters 1a, a column 2 erected at the center of the gantry in the width direction, and an upper end of the column 2. A stretcher unit 4 that is swingably mounted on a support shaft 3
And a hydraulic cylinder 5 as a swing drive source for swinging the stretcher 4. Here, the hydraulic cylinder 5 has a lower end portion of the cylinder portion 5a swingably attached to the center in the width direction of the gantry 1 by a swing shaft 1b, while the tip end of the ram 5b is eccentric to the eccentric position of the stretcher portion 4. Is pivotally connected to a pin 1c. Then, the hydraulic cylinder 5 is repeatedly extended and contracted to repeatedly swing the stretcher 4 in the order of horizontal state → leftward swing → horizontal state → rightward swing → horizontal state. Is available.

[0004]

By the way, in the conventional rocking type bed as described above, the swing of the stretcher 4 is controlled by the support 2
The rotation is performed about the support shaft 3 on a fixed point, which is the upper end of the shaft. Therefore, when the stretcher 4 is swung left (or right), the trajectory of the left edge 4a (or the right edge 4b) draws an arc centered on the support shaft 3. Therefore, the left edge 4a (or the right edge 4b) may possibly collide with the left end (or the right end) of the gantry 1, and in order to prevent this, the maximum swing angle may be set small, Are designed to reduce the width dimension of the or to increase the height of the columns.

As a result, in the conventional oscillating bed, the desired oscillating effect cannot be obtained because the oscillating angle is narrow, the gantry is unstable due to the short width of the gantry, or There are problems such as the parts being too high. The present invention has solved such a problem of a conventional rocking bed by providing a rocking guide link mechanism.
It is an object to provide a swing bed.

[0006]

In order to achieve the above-mentioned object, a swing bed according to the present invention comprises a gantry, a stretcher disposed above the gantry, and a swing drive source for the gantry. The telescopic drive device includes a link mechanism for swing guide, and the telescopic drive device has a lower end portion swingably attached to the gantry and an upper end portion pivotally attached to the stretcher portion. The link mechanism is composed of a pair of equal-length rods arranged crossing each other, and each lower end of the rod is pivotally connected to a symmetric position of the gantry, while each upper end of the rod is The stretcher is pivotally attached to the stretcher at a symmetrical position in a horizontal state.

[0007]

In the swing bed according to the present invention, the stretcher is swingably driven by the expansion and contraction operation of the telescopic drive, and the swing of the stretcher is controlled by a pair of rods of the swing guide link mechanism. It is performed in a guided state. Then, since the pair of rods are pivotal movements about the respective pivotal attachment portions of the respective rods with respect to the gantry, the swinger swings while moving the swing center substantially horizontally in the swinging direction.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an oscillating bed according to an embodiment of the present invention, in which a hydraulic cylinder is omitted, and FIG. FIG. 1 and 2
The same reference numerals as in FIG. 3 indicate substantially the same members. The oscillating bed of this embodiment also includes a gantry 1, a stretcher 4 and a hydraulic cylinder 5 as a swing drive source.
Are swingably mounted on the gantry 1 by a pair of rods 10 and 11 constituting a link mechanism.

That is, the rods 10 and 11 have the same length, and their lower ends are pivotally mounted by the pivots 10a and 11b at positions symmetrical with respect to the center line aa of the gantry 1. The two rods 10 and 11 are disposed so as to cross each other, and their upper ends are pivotally attached to the stretcher 4 by pivots 10b and 11b at positions symmetrical with respect to the center line aa in the horizontal state. I have. Further, between the gantry 1 and the stretcher 4,
A hydraulic cylinder 5 as a swing drive source is interposed by a mounting structure similar to that shown in FIG. The rods 10 and 11 together with the stretcher 4 constitute a set of link mechanisms, and such link mechanisms are provided at both front and rear ends of the oscillating bed.

In the above configuration, when the hydraulic cylinder 5 is contracted to swing the stretcher 4 rightward from the horizontal state shown by the solid line in FIGS. The rods 10, 11 rotate rightward about the pivots 10a, 11a, respectively. The pivot 10b moves to a position indicated by reference numeral 10b 'and the pivot 11b moves to a position indicated by reference numeral 11b' while guiding the stretcher. At this time, the swing center O of the stretcher 4 (corresponding to the position of the support shaft 3 in FIG. 3) moves substantially parallel to the right and moves to the position indicated by O '. That is, when the stretcher unit 4 swings rightward, the stretcher unit 4 turns right while moving in the right direction as a whole.

As described above, since the swing center of the stretcher 4 moves in the swing direction, in the state where the stretcher 4 is swung to the maximum swing angle,
The stretcher 4 is in a swinging state around the point indicated by the reference symbol X '. Therefore, there is no possibility that the right edge 4b of the stretcher 4 collides with the right end of the gantry 1, and the swing angle can be made sufficiently large. In addition, since the stretcher 4 is supported by the hydraulic cylinder 5 and the two rods 10 and 11 in a distributed manner, the burden on the hydraulic cylinder 5 can be reduced. Further, the dimension of the gantry 1 in the width direction can be set large. Further, it is not necessary to particularly raise the position of the stretcher 4 in order to increase the swing angle.

Since the link mechanism is formed symmetrically, the same applies when the stretcher 4 swings leftward. The swinging of the stretcher 4 to the left is performed by extending the hydraulic cylinder 5. The hydraulic cylinder 5
In place of the above, substantially the same operation and effect can be obtained by using an oscillating device in which a pinion, which is rotationally driven by a motor, is meshed with a rack as the oscillating drive source and the rack is extended and contracted by rotation of the motor. .

[0013]

As described above, according to the swing bed of the present invention, the following effects and advantages can be obtained. (1) The stretcher can be swung largely without increasing the height of the stretcher. (2) Since the load of the stretcher is dispersedly supported, it is more advantageous in terms of durability than the conventional one in which a large load acts on one place. (3) Since a large swing angle can be obtained while keeping the width of the mount large, stability is good.

[Brief description of the drawings]

FIG. 1 is a side view of an oscillating bed as one embodiment of the present invention, in which a description of a hydraulic cylinder is omitted.

FIG. 2 is a side view in which a description of a rod constituting the link mechanism is omitted.

FIG. 3 is a side view of a conventional rocking bed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand 4 Stretcher 5 Hydraulic cylinder 10, 11 Rod 10a, 10b, 11a, 11b Axis O Oscillation center

Claims (1)

(57) [Claims] In a swing type bed, a gantry, a stretcher disposed above the gantry, a telescopic drive as a swing drive source for the gantry, and a link mechanism for swing guide. The telescopic drive has a lower end pivotally attached to the gantry and an upper end pivotally connected to the stretcher, and the link mechanism is provided with a pair of equal lengths arranged to cross each other. Each of the lower ends of the rods is pivotally attached to a symmetric position of the gantry, while each upper end of the rod is pivotally connected to the stretcher at a symmetrical position of the stretcher in a horizontal state. A swing bed characterized by being worn.