JPH0337419B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rocking bed, and particularly to a rocking bed suitable for use as a hospital bed.

[Conventional technology]

Traditionally, we have treated critically ill patients, patients with long-term limited movement (patients with paralysis, people with head injuries, people with multiple sclerosis, people with broken spines, and patients who are unable to make voluntary movements or who are involuntary). By being unable to move while lying in a hospital bed (severely injured patients whose movements, including convulsive movements, must be restricted), various complications (descending pneumonia, atelectasis, thrombophlebitis, pulmonary embolism,
Prevention of complications known to occur (urinary stones, urinary tract infections, pressure sores, osteoporosis, muscle wasting, ectopic bone formation, constipation and fecal impaction, and orthostatic hypotension) To address this issue, a swinging hospital bed has been proposed.

As a swinging hospital bed like this,
There is one described in Publication No. 6279, and this conventional rocking hospital bed has a U-shaped bed with a pedestal with pillars erected at both ends, and a stretcher part pivotably supported by both pillars. The keel member and this U with stretcher part
It is configured to include a swinging mechanism for swinging the letter-shaped keel member.

And, in such a conventional swing bed,
In order to minimize the output of the drive device in the swinging mechanism, a U with a stretcher part, which is the swinging part, is used.
The distance between the patient's center of gravity and the center of rotation is reduced, but if the patient's weight is heavier than the standard weight, the center of gravity will move upward, so it is necessary to reduce the weight to correspond to the amount of movement of the center of gravity. U the weight
It is placed on the horizontal part of the keel-shaped keel for balance.

[Problem that the invention seeks to solve]

However, in such a conventional rocking bed, as a driving device for the rocking mechanism, a support shaft protrudingly fixed to the U-shaped keel member, an actuator for rotationally driving the support shaft, and a support shaft and It consists of a spur gear mechanism and a belt mechanism that are respectively attached to the rotating shaft of the actuator and mesh with each other.There is a problem that the stretcher part swings when the swing stops, so it is difficult to use a spur gear mechanism. However, there are problems in that the meshing noise is loud, and in the case of a belt mechanism, there is a risk of the belt breaking, so there is a lack of certainty in stopping the swinging, and furthermore, horizontal stop control is not performed well. There are also points.

The present invention aims to solve these problems by making it possible to smoothly stop the stretcher horizontally while maintaining quietness and ensuring reliable rocking. The purpose is to provide a rocking bed.

[Means for solving problems]

For this reason, the swingable bed of the present invention includes a pedestal that is erected with two pillars spaced apart from each other, and a stretcher part that is swingably supported by each of the pillars of the trestle. first and second support shafts protrudingly fixed to one and the other of the front and rear ends of the 2 bearings, and a swinging mechanism for swinging the stretcher section via the first support shaft, and the swinging mechanism includes an arm attached to the first support shaft, and a swing mechanism for swinging the stretcher section through the first support shaft. The rod includes a rod whose distal end is pivotally supported at the swinging end of the rod, and a drive device which is attached to the proximal end of the rod and rotates the rod. an inner shaft that is attached to one of the distal end and the proximal end and has teeth on the outer periphery; and an outer cylinder that is attached to the other of the distal end and the proximal end and has a toothed part that meshes with the teeth of the inner shaft. The control system is configured as a rotary telescopic conversion rod consisting of
an automatic horizontal stop control means that outputs a stop control signal or a deceleration start signal when it determines that is zero or a deceleration start point near zero; and an automatic horizontal stop control means that outputs a stop control signal or deceleration start signal when it determines that the The device is characterized by comprising a speed control means for adjusting the swinging speed so that high-speed swinging is performed until a start signal is received, and low-speed swinging is performed after receiving a deceleration start signal.

[Effect]

In the above-mentioned rocking bed of the present invention, the rotary and telescoping converting rod is rotationally driven by the drive device, so that the rotational force is converted into the telescoping force, and the tip of the rod is moved in the vertical direction to move the arm and the second bed. The stretcher can be swung through one support shaft.

Furthermore, when the drive device is stopped, the telescopic force of the rotary telescoping rod is not converted into rotational force, so the telescopic state is fixed, the arm is fixed, and the stretcher section is prevented from swinging.

Further, when the stretcher section is stopped horizontally, when the swing angle of the stretcher section reaches near zero, the stretcher section swings at a low speed, and a smooth horizontal stop action is performed.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 23 show a swing bed as an embodiment of the present invention, and Figures 24 and 25 show a swing bed as an embodiment of the present invention.
The figure shows a modification of the weight measuring mechanism, and FIGS. 26 and 27 show modifications of the support frame.

As shown in FIGS. 2 to 4, and 8, the rocking bed according to the present embodiment includes a pair of mounts 3a, 3b which are respectively erected with two pillars 2a, 2b separated from each other, and each mount 3a, 3b. A bed main body 1 is provided with a stretcher section 4 that is swingably mounted between support columns 2a and 2b.
and a swinging mechanism 20 for swinging the stretcher section 4.
(See Figs. 1, 9 and 10), a swing control system 60 (see Fig. 17) common to the swing mechanism 20, stop mechanism 80, and weight measurement mechanism 81, and a patient lying on the stretcher 4. Lashing mechanism 30 for lashing (third and fourth
(see figure), and a stop mechanism 80 (first
7) and a weight measuring mechanism 81 (see FIG. 22) for detecting the weight of a patient lying on the stretcher section 4.

As shown in FIGS. 2 and 8, the bed main body 1 is constructed as a separate type that can be separated and assembled, and includes an independent self-supporting portion 1A including a pedestal 3a and a swing mechanism 20, and an independent self-supporting portion 1B including a pedestal 3b.
and a mounting section 1C including the stretcher section 4.

The independent self-supporting portion 1A consists of a column 2a having an H-shaped cross section, a base 5a on which the column 2a is erected, a pedestal 3a with four casters 6a attached to the bottom surface of the base 5a, and the column 2a. The first double bearing 7a attached to the upper part of the (see Fig. 9)
and a first support shaft 8a (Figs. 1 and 9) which is supported by this first double bearing 7a, and a stretcher section 4 fixed to this first support shaft 8a is placed and attached. The structure includes a stretcher mounting flange 9a as a support body (first stretcher part) for the stretcher, and a swing mechanism 20 to be described later.

The independent self-supporting part 1B consists of a column 2b having an H-shaped cross section, a base 5b on which the column 2b is erected, a pedestal 3b equipped with three casters 6b attached to the bottom surface of the base 5b, and the column 2b. a second double bearing 7b attached to the upper part of the
A second support shaft 8b supported by a double bearing 7b of
and a stretcher attachment flange 9b as a support (second stretcher portion) fixed to the second support shaft 8b and on which the stretcher portion 4 is placed and attached.

As shown in FIGS. 2 to 8, the mounted portion 1C is configured to include a stretcher section 4, a lashing mechanism 30 to be described later, and a stopping mechanism 80 to be described later. A support frame 10 is supported on stretcher mounting flanges 9a and 9b of parts 1A and 1B via four load converters (load cells) 69 of a weight measuring mechanism 81, which will be described later, and a support frame 10 is installed on this support frame 10. fixed board 11a, movable board 1
1b and a floor portion 11 consisting of a split mat 11c placed on these boards 11a and 11b.

The first double bearing 7a and the first support shaft 8a described above constitute a first mounting part, and the second double bearing 7b and the second support shaft 8b constitute a second support shaft 8a. It constitutes the mounting part.

As shown in FIGS. 5 and 6, the support frame 10 has a stretcher attachment flange 9a which is a first stretcher part and a stretcher attachment flange 9b which is a second stretcher part.
a support frame portion 12 to which both ends are attached, respectively; and a undulating frame portion 1 on the head side attached to the support frame portion 12 via a pivot portion 13.
4 and a fixed frame part 15 on the foot side, and a gear mechanism 16 disposed between the support frame part 12 and the undulating frame part 14 and capable of raising and lowering the undulating frame part 14. The above-mentioned floor portion 11 is placed on the undulating frame portion 14 and the fixed frame portion 15.

As shown in FIG. 7, the split mat 11c is
It consists of eight mat parts 11c-1 to 11c-8, and opening and closing type mats 11c-3 to 11c-5 are provided in the center from the head H side to the foot L side. Matsuto 11c while lying down.
Mats 11c-3 to 5 for removing -3 to 5
A hatch-type slide opening/closing door mechanism (not shown) is provided for wiping the patient's back by lowering the movable board 11b separately and then retracting it in the left-right or front-back direction indicated by the arrows in the figure. .

As shown in FIGS. 1, 9, and 10, the swinging mechanism 20 includes two flat arms 21 attached to a first support shaft 8a and a swinging end portion 21a of the arm 21. Rod 22 with 22a pivotally supported
and a low-speed, high-torque pulse motor 23 as a drive device that is attached to the base end 22b of the rod 22 and rotates the rod 22, and the rod 22 is attached to the distal end 22a. an inner shaft 22A having teeth 22A-1 on the outer periphery; and a toothing portion 22B- attached to the base end 22b and meshing with the teeth 22A-1 of the inner shaft 22A.
1 and an outer cylinder 22B.

Furthermore, the swing mechanism 20 includes a pulse motor 23.
A reduction gear 24 consisting of a worm gear 24a attached to a rotational drive shaft 23a and a pinion 24b meshing with the worm gear 24a, a shaft 25 to which the pinion 24b is attached, and a shaft 25 between the shaft 25 and the outer cylinder 22B. The outer cylinder 22B is inserted
A universal joint 26 that rotates the universal joint 26 with a predetermined deflection angle as shown in the figure, a bellows-like dust cover 27 that prevents dirt from entering the universal joint 26, and an outer cylinder 22B.
and a frame 28 that regulates the deflection angle.

This allows the pulse motor 23 to
The final reduction ratio up to is 1/100,
When the pulse motor 23 is driven at 6.3 seconds/rotation, a swing angle of 120° is achieved in 210 seconds.

As shown in FIGS. 3 and 4, the lashing mechanism 30 includes a head lashing mechanism 30A and a chest lashing mechanism 30B.
and a waist and leg securing mechanism 30C, and the head securing mechanism 30A includes a pair of head holding pads 31 for holding the head of the human body.
, a horizontally oriented rod 32 attached to the tip of each head holding pad 31, a vertically oriented rod 32' attached to each rod 32 by a mounting member 33 in a direction crossing each other, and a vertically oriented rod 3.
The slide bar 34 is attached by an attachment member 33' in a direction perpendicular to 2' and attached along the head side edge of the undulating frame portion.

Each mounting member 33 has a hole 33a into which each rod 32, 32' is slidably fitted, and a hole 33a into which each rod 32, 32' is slidably inserted.
Each mounting member 33' has a hole 33'a into which the rod 32' and the slide bar 34 are slidably fitted, and a hole 33'a into which the rod 32' and the slide bar 34 are slidably inserted. 34
It is provided with a tightening screw 33'b for fixing.

Furthermore, a pair of shoulder pressing pads 35 for pressing the shoulders of the human body are provided at the tip of each rod 32.

As shown in FIGS. 3 and 4 and FIGS. 11 to 16, the chest securing mechanism 30B includes a pair of clamping members 3 for clamping the chest of the human body M via pads 52.
6, a horizontal slide member 37 to which the pair of clamping members 36 is movably attached so as to protrude toward the chest of the patient, and a pair of clamping members 36 that are moved along both side edges of the stretcher section 4, respectively. The distal ends 36a of the pair of clamping members 36 are rotatably attached to the pair of vertical sliding members 38 in order to adjust the pair of vertical sliding members 38 and the pair of clamping members 36 to fit along the chest of the human body. It is comprised of a pair of adjustment members 39 and slide guide plates 40 respectively attached to both side edges of the undulating frame portion 14 to guide the movement of the pair of vertical slide members 38.

Furthermore, the chest lashing mechanism 30B has the 11th to 1st
As shown in FIG. 4, an upper rail 41a and a lower rail 41b are installed on the upper and lower edges of this slide guide plate 40, respectively, and an upper rail 41a and a lower rail 41b installed on the vertical slide member 38 are installed on the upper and lower edges of the slide guide plate 40, respectively. The sliding guide member 42a and the sliding guide member 42b, which can be guided and slid, are held by the upper rail 41a and the lower rail 41b, respectively, and the vertical sliding member 38 is slid. A stopper 44 with a dial 43 that can prohibit and restrict relative sliding relative to the guide plate 40, and a convex portion 45 provided on the vertical slide member 38 to restrict the range of lateral movement of the vertical slide member 38 with respect to the slide guide plate 40. , a recess 46 formed on the outer surface of the slide guide plate 40 , and a comforter restraint fence 47 attached to the upper part of the vertical slide member 38 .

As shown in FIGS. 13 and 16, the horizontal slide member 37 has a cylindrical rod 4 attached to the vertical slide member 38 and protrudes toward the center of the bed.
8, a cylindrical hole 49 of the clamping member 36 fitted onto the cylindrical rod 48, a stopper 50 for locking the clamping member 36 to the cylindrical rod 48, and a stopper 50 for releasing the locking state of the stopper 50. The lock release knob 51 is provided with a latch release knob 51.

As shown in FIGS. 15 and 16, the clamping member 36 includes a contact plate 36a that can contact the human body via a chest pad 52, etc., a clamping member main body 36b having a cylindrical hole 49, A rotating part 36c serving as an adjustment member 39 disposed between the contact plate 36a and the clamping member main body 36b and capable of tilting the contact plate 36a with respect to the clamping member main body 36b, and allowing tilting in the rotating part 36c. It also includes a restraining lever 36d for inhibiting the use of the vehicle.

Furthermore, an arm fixing pad 53 is appropriately attached to the upper surface of the chest securing mechanism 30B.

The lashing mechanism 30C for the waist and chest includes the third and fourth
As shown in the figure, it has almost the same configuration as the chest lashing mechanism 30B, and the clamping member 36 is attached to the human body M.
The waist and leg pads 54 can be brought into contact with each other through the waist and leg pads 54.

And this waist and leg securing mechanism 30C
, a leg pad 55 for holding the leg between the waist and leg pad 54;
5 to the fixed frame portion 15, and a rod 57 for adjusting the length between the pad 55 and the fixing mechanism 56.

Also, a foot support plate 5 that can come into contact with the foot of the human body M is provided.
8 and this foot support plate 58, the fixed frame part 1 is fixed via the fixing mechanism 56'.
5 and a rod 59 that can be fixed to the main body.

As shown in FIG. 17, the swing control system 60 includes manual switches 60A and sensors 60B.
and a control means 60C, and the manual switches 60A are the 17th and 1st
As shown in FIG. 8, there is a push-type power switch 61a for switching the start and end of rocking, and a push-pull switch 61 for determining the direction of rocking.
b, 61c, a push switch 61d that increases the rocking speed when pressed, and a counterclockwise rocking angle φ ₁ when viewed from the horizontal axis from the head H side of the bed to the foot L side. The knob 61e that sets the clockwise swing angle φ ₂ when viewed from the horizontal axis from the head H side of the bed toward the foot L side corresponds to each switch 61a to 61d. Lamps 62a to 62d that display the operating status
and a meter 63 that displays the swing angle φ from the rotary sensor 65, and the manual switches 60A are arranged on the operation panel 64.

The sensors 60B are connected to the first support shaft 8a to the second support shaft 8a.
a rotary sensor 65 that detects the swing angle of the support shaft 8b and outputs an angle signal to the control means 60C; a reference angle signal generator 66 that outputs a reference angle signal when the swing angle φ is zero; 4 and the pedestal 3a,
A touch sensor 67 is attached to the outer surface of 3b and detects when external force (for example, pedal force) is applied.
[See Figures 19 to 21], a torsional force detector 68 attached to the first support shaft 8a or the second support shaft 8b to detect a torsion force of a predetermined value or more, and stretcher mounting flanges 9a, 9b. It is composed of four load converters 69 (see FIG. 22) disposed between the support frame 10 and the support frame 10.

As shown in FIGS. 19 to 21, the touch sensor 67 includes two electrodes 67a, 67b and a conductive rubber 67 sandwiched between these electrodes 67a, 67b.
c, and silicon 67d surrounding these electrodes 67a, 67b and conductive rubber 67c, and when external force F is applied, the electrodes 67a, 6
7b is short-circuited.

As shown in FIG. 22, the load converter 69 is of a beam-type tension/compression type, and a support point 69a is attached to the flanges 9a, 9b via a support 70 to convert the load. point 69
b is attached to the edge of the support frame 10, so that the load transducer 69 is attached to the support frame 10.
It is configured to receive the entire weight of the patient M, the floor portion 11, and the patient M.

The control means 60C includes manual switches 60
A swing control means receives a command signal from A, a swing angle signal from the rotary sensor 65, and a reference angle signal from the reference angle signal generator 66, and outputs a swing control pulse to the pulse motor 23 serving as a drive device. , a swing stop means 74 that receives detection signals from the touch sensor 67 and the torsional force detector 68 via an OR circuit 72 and outputs a swing stop signal to the switch section 73, and each detection signal from the load converter 69. A repeater (adder) 75 receives and adds the reference angle signal [trigger pulse signal, second
Refer to Figure 3 b], the repeater (adder) 75
In addition to the strain amplifier 77 as a weight measurement unit that holds the addition signal from the input signal and displays the weight on the display 76 (see the solid line in FIG. 23), there is also a an automatic horizontal stop control means 94 that outputs a stop control signal or a deceleration start signal when it is determined that the swing angle φ is zero or that the deceleration start point is near zero after receiving the signal; and a speed control means 95 for adjusting the swinging speed so that high-speed swinging is performed until a deceleration start signal is received, and low-speed swinging is performed after receiving a deceleration start signal. A horizontal stop mechanism 96 is provided.

As shown in FIGS. 17 and 19 to 21, the stop mechanism 80 includes a touch sensor 67, a torsion force detector 68, and an OR circuit 7 included in the swing control system 60.
2, swing stop means 74, and normally closed switch section 7
It is composed of 3.

In addition, the weight measurement mechanism 81 includes, as shown in FIG. 22, the swing mechanism 20, the load converter 69 included in the swing control system 60, and the angle sensor 65.
It is composed of a reference angle signal generator 66, a repeater 75, a display 76, and a strain amplifier 77. Note that it may be configured to include a memory that stores the load W ₁ when the patient M is not placed on it, and to subtract this load W ₁ from the detected weight and display it on the display 76 .

As shown in FIG. 24, the weight measuring mechanism 81 includes a load converter 69 such as a cylindrical sensitive type, an arithmetic unit 78 that subtracts the load W ₁ from the total load from the adder 75, and this arithmetic unit 78. Weight signal from [2nd
a memory 79 that holds the maximum value of
A device equipped with a display 76 may also be used. In this case, the maximum value can be used to measure body weight.

In addition, as shown in FIGS. 26 and 27, a telescopic telescoping mechanism 90 may be provided, and in this case, the support frame 10 has a U-shaped structure attached to the stretcher attachment flange 9a, which is the first stretcher part. Condition 1
and a U-shaped second support frame part 10b attached to a stretcher attachment flange 9b, which is a second stretcher part. A cylindrical body 91 having a rectangular cross section as a first guide member is formed at both ends of the portion 10a, and a second support frame portion 10b is fitted inside the cylindrical body 91 to guide sliding movement. A rod-shaped body 9 as a second guide member formed at both ends of the
2, and a stopper 93 that restrains relative sliding between the cylindrical body 91 and the rod-shaped body 92.

That is, the first and second support frame portions 10
a and 10b are mounted so as to be relatively movable.

This rod-shaped body 92 is constituted by a columnar body having a solid cross section or a cylindrical body having a rectangular cross section.

Note that the cylindrical body 91 and the rod-shaped body 92 have a vertical height equal to that of the first and second support frame portions 10a and 10.
Rigidity is increased by making the vertical height larger than the cross member in b.

Since the rocking bed according to the embodiment of the present invention is constructed as described above, when it is divided, the load converter 69 and other parts are connected to the stretcher part 4 and the flange 9.
a, 9b are divided into independent independent parts 1A, 1B.
It can be divided into the mounting part 1C and the mounting part 1C.
Improves portability when moving, and when assembling,
The stretcher portion 4 and the flanges 9a, 9b can be combined and assembled integrally at a portion such as the load converter 69. Also, maintenance is easy.

After this assembly, the first and second support shafts 8
Since a and 8b are supported by double bearings 7a and 7b, deviation of the swing axes of each support shaft 8a and 8b is allowed.

Also, during rocking, the rocking mechanism 20 causes the first
As shown in Fig. 8, rocking is started upon receiving a start signal from the power switch 61a of the control system operation panel 64 and a rocking direction signal from the direction switch 61b (61c), and the left and right rocking during the rocking. The angles φ ₁ and φ ₂ can be changed according to set values from knobs 61e and 61f as manual switches.

In addition to the normal swing speed, high speed rotation can be selected based on input from the high speed rotation switch 61d.

Moreover, as shown in FIGS. 1, 9, and 10, when the pulse motor 23 is driven to rotate in one direction (normal rotation),
Outer cylinder 2 via reduction gear 24 and universal joint 26
2B is rotated, and the inner shaft 2 meshes with the outer cylinder 22B.
2A moves up and down, and the arm 21 swings.

Then, when the pulse motor 23 rotates in one direction by a predetermined angle (in this case, 6000 degrees from the horizontal axis), the stretcher section 4 has swung up to the oscillation angle φ ₁ (φ ₂ ), so the rotation is stopped. In order to immediately start rotating in the other direction, the pulse motor 23 is driven to rotate (reversely) in the other direction.

Furthermore, when the pulse motor 23 rotates in the other direction by a predetermined angle (in this case, 6000 degrees from the horizontal axis), the stretcher section 4 has swung up to the oscillation angle φ ₂ (φ ₁ ), so the rotation is stopped. In order to immediately start rotating in one direction, the pulse motor 23 is driven to rotate in one direction (normal rotation).

Such forward and reverse rotations of the pulse motor 23 are sequentially repeated.

The angle signal from the rotary sensor 65 is used to determine that the swing angle φ ₁ (φ ₂ ) has been matched.
As another means, by providing an up-down counter that counts the drive pulse signal to the pulse motor 23, a signal representing the rotation angle of the pulse motor 23 is compared with a digital setting value signal corresponding to the angle from the manual switch. In this case, the up-down counter is initialized at the horizontal position (swing angle is zero) at the start and at predetermined time intervals. do.

In addition, when the rocking stops, press the high-speed rotation switch and visually monitor the meter.
The swing angle φ of the stretcher section 4 can be made zero.

Also, when it is determined that the swing angle φ is zero or the deceleration start point near zero after receiving a signal from the automatic horizontal stop operation switch in the manual switch 60A, a stop control signal or deceleration start is issued. An automatic horizontal stop control means 94 for outputting a signal is provided, and upon receiving the signal from the operation switch, the automatic horizontal stop control means 94 performs high-speed rocking until a deceleration start signal is received from the automatic horizontal stop control means.
After receiving the deceleration start signal, the stretcher section is smoothly stopped horizontally by the action of an automatic horizontal stop mechanism 96 including a speed control means 95 that adjusts the swing speed so as to perform low-speed swing.

Furthermore, when the pulse motor 23 is stopped when the swing is stopped or the power is turned off, the worm gear 24a and pinion 24b maintain the stop without rotating the outer cylinder 22B. The stretcher section 4 of the movable bed does not swing and is supported firmly and stably.

The chest lashing mechanism 30B and the waist and leg lashing mechanisms 30C in the lashing mechanism 30 allow the abutment plate 36a at the tip of the clamping member 36 to be tilted and fixed. The contact plate 36a can be made to follow the outer shape of the human body M, thereby preventing the patient, etc. from falling from the bed body 1 during rocking, and the entire surface of the contact plate 36a can be made to fit through the pads 52, 54. Since the clamping force can be placed along the human body M, the clamping force is not concentrated on a part of the human body M, and the influence of the clamping force on the human body is extremely small.

Also, the stop mechanism 80 allows the touch sensor 67 to
However, if it is detected that an external force of a predetermined value or more is applied, or if the torsional force detector 68 detects that a torsional force of a predetermined value or more is applied, the swinging mechanism 20 is immediately stopped. Therefore, even if an object or person is caught between the stretcher section 4 and the pair of frames 3a and 3b, damage can be minimized.

Furthermore, the weight measuring mechanism 81 can measure the weight at the point where the swing angle φ is zero, and thereby the weight of the patient M can be accurately measured while the patient M is lying down, thereby improving the health management of the patient. It can be done reliably.

Furthermore, as shown in FIGS. 26 and 27, the telescopic mechanism 90 allows the cylindrical body 91 of the first support frame portion 10a and the rod-shaped body of the second support frame portion 10b to be 92, the length from the first support shaft 8a to the second support shaft 8b can be adjusted by contracting or expanding, as shown by the two-dot chain line in the figure. can.

After the adjustment, the relative sliding movement between the cylindrical body 91 and the rod-shaped body 92 is restrained by the stopper 93.

This allows the length of the bed to be changed arbitrarily to suit the user, reducing wasted space in the room, and making it possible to adjust the length of the bed to suit the child's growth. However, the length can be adjusted as appropriate depending on the patient, making the space in the hospital room more efficient.

Further, when the bed is moved, the length may be contracted to facilitate the movement.

〔Effect of the invention〕

As described in detail above, according to the swing bed of the present invention, the first support shaft can be stably moved with a large driving force by the drive device, the rotary telescoping conversion rod, and the arm, and also quietly. It has the advantage that it can be oscillated, and it also has the advantage of reducing costs.

Furthermore, the automatic horizontal stop mechanism allows the stretcher to be stopped horizontally smoothly.

[Brief explanation of the drawing]

Figures 1 to 23 show a rocking bed as an embodiment of the present invention, with Figure 1 being a front view showing its rocking mechanism, Figure 2 being a perspective view of the bed in the middle of assembly, and Figure 3. 4 is a plan view of the assembly, FIG. 5 is a plan view of the support frame, FIG. 6 is an elevation view of the support frame, and FIG. 7 is a plan view of the mat. 8 is a perspective view showing the separated state before assembly, FIGS. 9 and 10 are a side view and a sectional view of the main part (X-X arrow sectional view in FIG. 1) showing the swing mechanism, respectively. 11 to 14 are a plan view, a front view, a cutaway side view of the main part (cross-sectional view taken in the direction of the - arrow in Fig. 12), and a cutaway side view of the other main part (the -arrow in Fig. 12) showing the lashing mechanism, respectively. cross-sectional view), 1st
5 and 16 are a plan view and a broken sectional view (a sectional view taken along the − arrow in FIG. 15) of the holding member, respectively;
Figure 17 is a block diagram showing the control system, Figure 18
The figure is a front view showing the operation panel, FIG. 19 is a cutaway perspective view of the main part showing the touch sensor,
The figures are a cutaway perspective view and a cutaway plan view of the main parts showing the state of external force detection in the touch sensor, respectively. Fig. 22 is a schematic configuration diagram showing the weight measurement mechanism, and Fig. 23a and b are the weight measurement mechanism. FIGS. 24 and 25 are graphs showing the action; FIGS. 24 and 25 show a modification of the weight measuring mechanism; FIG. 24 is a schematic diagram thereof; FIGS. 25 a and b are graphs showing the action; 26 and 27 are a plan view and a side view, respectively, showing a modified example of the support frame. DESCRIPTION OF SYMBOLS 1... Bed main body, 1A... First independent independent part, 1B... Second independent independent part, 1C... Mounting part, 2a, 2b... Support column, 3a, 3b... Frame, 4... Stretcher part, 5a, 5b... base, 6a,
6b... Caster, 7a... First double bearing (first mounting part), 7b... Second double bearing (second
mounting part), 8a...first support shaft (first mounting part), 8b...second support shaft (second mounting part), 9a
... Stretcher mounting flange as a support (first stretcher part), 9b... Support (second stretcher part)
flange for attaching a stretcher, 10... support frame body, 10a... first support frame part, 10b...
Second support frame portion, 11... floor section, 11a...
Fixed board, 11b...Movable board, 11c
...Split mat, 11c-1 to 11c-8...
Mat portion, 12... Support frame portion, 13... Pivotal support, 14... Lifting frame portion, 15... Fixed frame portion, 16... Gear joint mechanism, 20... Rocking mechanism, 21... ...Arm, 21a...Swinging end, 2
2... Rod, 22a... Tip, 22b... Base end, 22A... Inner shaft, 22A-1... Teeth, 2
2B... Outer cylinder, 22B-1... Teeth, 23... Pulse motor as a drive device, 24... Reduction gear, 24a... Worm gear, 24b... Pinion, 25... Shaft, 26... Universal joint , 27...dust cover, 28...frame body, 30...lashing mechanism,
30A... Head lashing mechanism, 30B... Chest lashing mechanism, 30C... Waist and leg lashing mechanism,
31... Head holding pad, 32, 32'... Rod, 33, 33'... Mounting member, 33a, 33'a
...Hole, 33b, 33'b...Tightening screw, 3
4...Slide bar, 35...Shoulder presser pad,
36... Holding member, 36a... Contact plate, 36b...
...Holding member main body, 36c...Rotating part, 36d...
Operation lever, 37... Horizontal slide member, 38...
Vertical slide member, 39...adjustment member, 40...slide guide plate, 41a, 41b...rail, 42
a, 42b...Sliding guide member, 43...Dial, 44...Stopper, 45...Protrusion, 46...
Recessed portion, 47... restraint fence, 48... cylindrical rod, 49... cylindrical hole, 50... stopper,
51... Lock release knob, 52-55... Pad, 56, 56'... Fixing mechanism, 57... Rod,
58... Foot support plate, 59... Rod, 60...
Swing control system, 60A...manual switches,
60B...sensors, 60C...control means, 61
a...Power switch, 61b, 61c, 61d
...Push switch, 61e...Knob, 6
2a to 62d... Lamp, 63... Meter, 64
...Operation panel, 65...Rotary sensor, 66...
Reference angle signal generator, 67...Touch sensor, 67
a, 67b... Electrode, 67c... Conductive rubber, 6
7d...Silicon, 68...Torsional force detector, 69
...Load converter, 69a...Support point, 69b...
Load point, 70... Support stand, 71... Rocking control means, 72... OR circuit, 73... Switch portion, 7
4... Swing stop means, 75... Repeater (adder),
76... Display device, 77... Strain amplifier as a weight measuring section, 78... Arithmetic unit, 79... Memory, 80... Stop mechanism, 81... Weight measuring mechanism,
90... Telescopic mechanism, 91... Cylindrical body, 92... Rod-shaped body, 93... Stopper, M... Human body or patient.

Claims (1)

[Claims] 1.Equipped with a stand which is erected by separating two supports, and a stretcher part which is swingably supported by each support of the stand, and which protrudes from one and the other of the front and rear ends of the stretcher part. Fixed first and second
a support shaft, first and second bearings respectively interposed between the first and second support shafts and each of the above-mentioned supports, and the stretcher section is swung through the first support shaft. The swing mechanism includes an arm attached to the first support shaft and a tip end at the swing end of the arm. It is composed of a pivotally supported rod and a drive device attached to the proximal end of the rod to rotate the rod, and the rod is attached to one of the distal end and the proximal end. The rod is constructed as a rotary telescopic converting rod consisting of an inner shaft having teeth on the outer periphery, and an outer cylinder having a toothed part attached to the other of the distal end and the proximal end and meshing with the teeth of the inner shaft. At the same time, the control system is
An automatic device that outputs a stop control signal or a deceleration start signal when it determines that the swing angle φ is zero or is at the deceleration start point near zero after receiving a signal from the manual automatic horizontal stop operation switch. In response to signals from the horizontal stop control means and the above-mentioned manual operation switch, the oscillation is performed at high speed until the deceleration start signal is received, and after the deceleration start signal is received, the oscillation is performed at low speed. A rocking bed characterized by comprising speed control means for adjusting the speed.