KR20000067158A - Auto bed - Google Patents

Abstract

PURPOSE: An automatic bed is provided to make a user sleep well by taking a comfortable sleep posture. CONSTITUTION: An automatic controller(10) saves a control program according to the optimum pressure distribution of each part of human body measured in various kinds of postures of a user. Plural drivers are operated selectively by control of the automatic controller. In a bed(30), a matress(32) is mounted on a bed frame having the drivers at regular intervals. The matress(32) is divided by plural moving plates(321) having vertical motion through the drivers. Each body pressure sensor is mounted at regular intervals on the upper surface of the matress. The sensors detect pressure of each body part depending on posture of a user on the matress. The automatic controller compares the detected value with the predetermined pressure distribution. The drivers are operated selectively depending on occurrence of deviation. Therefore, the user sleeps well by taking a comfortable sleep posture.

Description

Auto bed {Auto bed}

The present invention relates to an automatic bed, and more particularly, to an automatic bed that maintains a comfortable and comfortable lying posture according to the user's gender, height, weight, and lying posture.

In general, a person's sleep time is known to be about more than a lifetime, and if not properly sleeped, physiologically cumulative muscle fatigue and brain cell thinking ability, as well as causing problems in the next day's social activities. Sleep is a natural process of washing one's fatigue and preparing for tomorrow, and is an important part of everyday life that cannot be overlooked.

Therefore, the average adult usually sleeps about 6 to 8 hours a day, but the body pressure, which is the pressure generated in contact with the bedding of the person's body and bedding caused by uncomfortable bed environment or weight, is important for the body. If not properly distributed on the head, torso, hips, and legs, the lying position becomes uncomfortable, causing the body to consciously or unconsciously to turn over, resulting in a poor night's sleep and adding fatigue to the living body in the aftermath. Because it lowers your thinking ability, you need to be able to get a good night's sleep for a healthy life.

However, in order to get a good night's sleep, it is necessary to relax the sleeping posture, and to do this, it is necessary to provide a good quality sleep environment. .

In other words, there are various types of beds, such as single, double, twin, wheeled beds, bunk beds, chairs, convertible beds, mats or hospital beds, which are composed of mattresses and bed frames. A spring plate is installed in which a plurality of springs are arranged vertically and horizontally. The upper, lower and side surfaces of the spring plate are formed by laminating padding and fabric made of nonwoven fabric, sponge, wool or chemical cotton, etc. The paper and side papers are wrapping.

However, since the conventional bed is constructed uniformly regardless of the user's physical characteristics, the sleeping posture becomes unstable due to the use of a bed that does not fit the physical characteristics, thereby affecting the correct position of the muscles or internal organs. Not only were the effects spread to the major teams in each organ, but there were also pulmonary diseases that caused abnormalities to the living body and increased fatigue as the commands to the nervous system to regenerate energy and balance metabolism could not be delivered correctly.

In addition, when the mattress is too flexible, it is difficult to maintain posture and the body support is unstable, which makes the muscles involuntarily acting uncomfortably, making it unsuitable for patients with low back pain. This was not only difficult to turn over, so it was uncomfortable to fall asleep, and sweat while sleeping, but because the body is completely in the mattress, sweating is suppressed, preventing a comfortable sleep.

In addition, when the mattress is too hard bed, the blood pressure of the body part with high body pressure is restricted, causing frequent overturning during sleep, making it impossible to get a good night's sleep.

The present invention has been invented in view of the problems of the conventional bed as described above, and an object thereof is to provide an automatic bed that makes it possible to take a good night's sleep by relaxing the sleeping posture.

Another object of the present invention is to provide a medical bed for the general public, as well as a medical bed for the prevention of bedsores, or an automatic bed that is highly useful for disabled or elderly patients.

Still another object of the present invention is to provide an automatic bed that can greatly contribute to import substitution and export increase through advancement of bed technology.

These objects of the present invention, the body pressure of each part of the body according to the user's sex, height, weight or lying posture (right lying posture, side lying posture, lying down posture) to maintain the optimal distribution pattern This is achieved by providing an automatic bed that makes your posture comfortable and comfortable so you can have a good night's sleep. This automatic bed selects the automatic mode and the user mode and controls each part of the body to maintain the optimal body pressure distribution. Automatic controller with a control program stored therein, a plurality of drivers selectively operated by the control of the controller, and when these drivers are selectively operated, the height of the corresponding part of the mattress at the position where the driver is installed is adjusted The bed is kept at a comfortable distance, and the mattress of this bed is laid at regular intervals. Body pressure values lie down when the body pressure detected in the body parts and the sensing is provided with the body pressure sensor is sent to the automatic controller.

The control program distributes the body pressure of each part of the lying posture according to male and female gender, height, and weight to maintain an optimal state, so that the lying posture is kept comfortable and comfortable so that a comfortable sleep can be taken. The optimal comfort body pressure distribution ratio is stored, and this body pressure distribution data is used to select an unspecified number of subjects by gender, height, weight, shoulder width, waist width, hip width, lumbar depth, and Martin. Using an anthropometer, measure directly according to KSA7003 and KSA7004 and measure the mattress of the bed in the lying posture, lying sideways, lying down position, which is the most frequently taken position when a person sleeps. It is divided into eight equal parts of the chest, lumbar spine, thigh, thigh, calf, and foot. It was obtained by measuring the body pressure applied to each part and adjusting the body parts of the subjects to the most comfortable state by operating the respective actuators installed on the corresponding parts of the eight equal parts of the mattress. .

The optimal body pressure distribution was calculated using the following equation (1) according to the zonal division criteria, based on the zonal division criteria, the body pressure distribution ratio measured in the posture of lying directly, the posture lying sideways, and lying down.

...... (One)

In the above formula, PRi represents the body pressure ratio of each part of the bed, Pi represents the total body pressure of each part of the bed, and i represents each part divided into eight equal parts of the bed mattress.

Roes Index (R hrer's index) is an index used to express the ratio relationship between each measurement part of the body.

...... (2)

Using the above equations (1) and (2), multiple rules of body pressure ratio before and after height adjustment of each part of the mattress for sleeping posture are designed to recognize a sleeping posture rule, and to measure anthropometric values and sleep. Through the correlation analysis of body pressure ratio by posture, gender test, cluster analysis, and mapping, the body pressure ratio was determined by using the average body pressure ratio by body type.

The following table shows an example of the posture comfort ratio by posture.

Part castle group N Lying down Lying sideways Lying down Body pressure Standard Deviation Body pressure Standard Deviation Body pressure Standard Deviation One male One 34.5 0.0925 0.055 0.0697 0.0099 0.1419 0.0414 2 41.4 0.0655 0.025 0.062 0.0087 0.0918 0.0288 3 24.1 0.0603 0.035 0.0676 0.0088 0.1101 0.0356 female One 31.4 0.0290 0.016 0.0320 0.0130 0.0462 0.0382 2 34.3 0.0756 0.033 0.0531 0.1975 0.0826 0.0390 3 34.3 0.0979 0.054 0.0504 0.0083 0.0872 0.0374 2 Male, female One 23.4 0.1471 0.047 0.3600 0.0120 0.0653 0.0368 2 40.6 0.1248 0.041 0.0345 0.0089 0.0492 0.0269 3 36 0.1376 0.031 0.0457 0.0220 0.0486 0.0269 3 male One 27.6 0.0535 0.016 0.1170 0.0120 0.1157 0.0226 2 31 0.1123 0.024 0.1220 0.0213 0.1318 0.0157 3 41.4 0.0845 0.022 0.1454 0.0262 0.1506 0.0212 female One 28.6 0.0756 0.017 0.0900 0.0220 0.1029 0.0387 2 40 0.0770 0.018 0.1061 0.0265 0.1435 0.0309 3 31.4 0.1177 0.023 0.1379 0.0368 0.1286 0.0155 4 Male, female One 25 0.0972 0.039 0.0701 0.0253 0.1695 0.0532 2 26.6 0.1079 0.053 0.0904 0.0427 0.2177 0.0714 3 48.4 0.1239 0.036 0.1078 0.0371 0.2017 0.0437 5 male One 20.7 0.2277 0.044 0.4433 0.0361 0.2152 0.0117 2 37.9 0.2014 0.039 0.4183 0.0205 0.2136 0.0234 3 41.4 0.2608 0.043 0.3985 0.0338 0.2316 0.0275 female One 40 0.3045 0.071 0.4901 0.0430 0.2544 0.0287 2 22.9 0.2113 0.034 0.4267 0.0217 0.2201 0.0280 3 37.1 0.2395 0.041 0.4200 0.0312 0.2630 0.0315 6 Male, female One 14.1 0.1905 0.047 0.0984 0.0239 0.1412 0.0420 2 42.2 0.2253 0.053 0.1394 0.0454 0.1823 0.0445 3 43.7 0.1775 0.044 0.1287 0.0395 0.1412 0.0314 7 male One 48.3 0.0673 0.022 0.0159 0.0063 0.0590 0.0217 2 51.7 0.0755 0.045 0.1150 0.0036 0.0774 0.0214 female One 40 0.0777 0.024 0.0245 0.0065 0.0488 0.0221 2 25.7 0.0611 0.021 0.0266 0.0077 0.0529 0.0197 3 34.3 0.0703 0.020 0.0137 0.0094 0.0559 0.0127 8 male One 55.2 0.0691 0.023 0.1095 0.0260 0.0515 0.0144 2 31 0.0513 0.039 0.1175 0.0106 0.0395 0.0108 3 13.8 0.0743 0.015 0.1387 0.0021 0.0595 0.0088 female One 51.4 0.0440 0.015 0.0739 0.0129 0.0453 0.0141 2 31.4 0.529 0.019 0.1036 0.0135 0.0571 0.0158 3 17.2 0.0547 0.010 0.1092 0.0258 0.0653 0.0173

In the above table, parts 1 to 8 show the parts of the bed mattress divided into eight equal parts in the transverse direction according to the head, shoulders, chest, lumbar spine, hip, thigh, calf, and foot of the body. Male and female subjects who participated in the event hrer's index) divided into three groups, N is the ratio of the number of subjects in each group to the total number of subjects who participated in the measurement, and in Part 2, 4 and 6, 3 The body pressure and standard deviation values of each posture are shown as the body pressure ratio of each part of the body when the body pressure applied to the whole body when the subject is lying on the mattress is 1.

In addition, the height and lightning indexes of each group are 1 group 2 groups 3 groups.

Therefore, the automatic controller compares the optimal body pressure distribution ratio as described above with the body pressure value of each part of the user lying in the bed, and selectively operates the actuators to automatically adjust the height of each of the eight equal parts of the bed mattress. By maintaining the optimal body pressure distribution pattern and sleeping posture, the user can take a good night's sleep.In case of uncomfortable sleep posture performed by the automatic mode, the user can measure individual comfort pressure by using the user mode. By storing individual data, the automatic controller can maintain a comfortable posture accordingly.

1 is a schematic configuration diagram of an automatic bed according to an embodiment of the present invention;

Figure 2a is a block diagram showing the overall configuration;

Figure 2b is a block diagram extracting some of the configuration;

3 is a perspective view showing an example of an automatic bed to which the embodiment is applied;

4 is a block diagram showing the configuration of an automatic controller in an embodiment of the present invention;

Figure 5a-b is a schematic rear view showing an operating state of the automatic bed;

6 is an excerpt perspective view of a driver in the embodiment;

7 is an excerpt perspective view of a counter in the embodiment;

8 is an enlarged perspective view of an extract of the safety device of the embodiment;

9a-c is a rear view showing the operating state of the safety device;

10 is an operation flowchart according to an embodiment of the present invention;

Figure 11a is a side view showing a posture lying directly on the automatic bed,

Figure 11b is a side view showing a posture lying on the bed automatic bed;

Figure 11c is a side view showing a posture lying on the bed side the present invention,

<Description of the code | symbol about the principal part of drawing>

10: automatic controller

10a: main controller 10b: subcontroller

20: driver

21: motor 22: jack

30: bed

31: bed frame 32: mattress

321: movable plate

40: body pressure sensor

60: counter

61: rotating disc 62: optical sensor

611 through hole 621 light emitting element

622 light receiving element

80: regulator

81: selection button 82: level display

83: Up button 84: Down button

85: zero button 86: all zero button

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The automatic bed according to the embodiment of the present invention includes an automatic controller 10 in which a control program is stored according to the selection of the automatic mode and the user mode, and the optimal distribution ratio of each part of the body according to the gender, height, weight, and lying posture of the user, and the controller. A plurality of drivers 20 selectively operated according to the control of the control panel, a bed frame 31 provided with these drivers at regular intervals, and a plurality of movable parts mounted on the bed frame and lowered and lifted by the drivers respectively. The bed 30, which is a mattress 32 separated from the plates 321, and detects the body pressure of each part of the body according to the lying posture of the user lying on the mattress, so that the detected body pressure value is sent to the automatic controller. It is composed of a plurality of body pressure sensors 40 which are laid at regular intervals in the upper surface of the mattress and are contact sensor (FSR) using the property that the contact resistance changes when pressure is applied.

The automatic controller is composed of a plurality of sub-controllers (10b) for controlling the operation of the main controller (10a) and the plurality of drivers (20), respectively, the main controller is a resistance value sensed from the body pressure sensor (40) An analog multiplexer for converting the signal into an analog signal, an amplifier for amplifying the analog signal, an A / D converter for converting the amplified analog signal into a digital value, and the digital A CPU for storing data that can be compared with a value, and a central processing unit (CPU) for comparing the data stored in the memory unit with the digital value and outputting a signal controlling the operation of the driver 20 to the corresponding sub-controller 10b. And an interface connecting the central processing unit and the memory unit with a converter.

The automatic controller is configured such that the body pressure values of eight parts of the user's body lying on the mattress 32, that is, the eight parts of the head, shoulder, chest, lumbar spine, thigh, calf and foot, are provided to the body pressure sensors 40. When detected and input to the main controller 10a, when there is a body part in which a deviation occurs in comparison with the optimal body pressure distribution ratio stored therein, the sub-controller located in the corresponding part that the body part is in contact with ( 10b) outputs a control signal, and in this case, the sub-controller operates the corresponding actuators 20 to elevate the movable plate 321, so that the corresponding portions of the mattress 32 are elevated to distribute the body pressure. .

For example, if a lot of body pressure is applied to the buttocks, the lower part of the mattress 32 that the hip is in contact with is lowered than the part where the lumbar spine and thigh are in contact, so that the lumbar spine and thigh are before the lowered hip part of the mattress. By spreading over the back, the body pressure applied to the hips is distributed to the lumbar spine and thigh, or when the hip contact is no longer lowered, the part where the lumbar spine and thigh contact is raised from the hip To distribute body pressure.

At this time, the degree of raising is until the body pressure applied to the hips is in a state consistent with the optimal body pressure distribution ratio stored in the automatic controller 10.

On the contrary, if the body pressure applied to the body part in contact with the raised portion of the mattress 32 is higher than the optimum body pressure distribution ratio, the body part is in contact with the part where the body pressure is not lowered because the body part is lowered at this time. It keeps you comfortable and comfortable at all times.

The drivers are composed of a motor 21 and a jack 22 for converting the rotational motion of the motor into a lifting motion.

The motor and the jack are connected to each other by horizontally connecting the motor shaft 211 and the horizontal axis 221 of the jack with the coupler 50, and the jack is installed at the lower center side of each of the movable plates 321.

These jacks 22 may be installed only one for each movable plate 321, but in special cases such as a bed or a single bed used by a user with a large body and a very heavy body but relatively wide, such that they are connected in series. Plural may be provided.

In addition, the jack has a spiral shaft 222 vertically elevated in the state orthogonal to the horizontal axis 221, the horizontal axis and the spiral axis is rotated by the dignity gear rotated in conjunction with the worm and the worm formed on the horizontal axis Delivered.

That is, since the helical shaft is screwed to penetrate the worm gear in which the female spiral is formed in the through hole vertically, when the worm gear is rotated by the worm, the spiral shaft 222 is vertically penetrated to be engaged with the female spiral of the worm gear. Is lifted vertically.

Of course, the jack 22 operated in this way is generally used widely.

Meanwhile, in the embodiment, the movable plate 321 is raised and lowered by the jack 22, but the present invention is not limited thereto. If the movable plate can be vertically elevated while maintaining the horizontal position, the cam or the lever method may be used. Any may be used.

On the other hand, the motor 21 and the jack 22 are respectively fixedly installed at the corresponding position of the bed frame 31, the upper end of the spiral shaft 222 of the jack is fixedly installed in the center of the bottom surface of the movable plate 321.

Therefore, when the spiral shaft 222 is vertically lifted, the movable plate 321 is lifted together.

In addition, the control of the degree that the movable plate is lifted is controlled by the automatic controller 10 by counting the operating state of the driver 20, that is, the number of revolutions of the horizontal axis 221, for this purpose, the counter ( 60) is laid.

The counter is fixedly installed at one end of the horizontal axis 221 and is composed of a rotating disk 61 and the optical sensor 62 formed in the periphery of the through-holes 611 at regular intervals.

The light emitting device 621 and the light receiving device 622 of the optical sensor are respectively installed on both sides with the peripheral portion of the rotating disc therebetween, and the through holes 611 pass between the devices 621 and 622. Since the light receiving element 622 detects the light of the light emitting element 621 every time, the number of passages of the through holes 611 formed in the rotating disc is counted and transferred to the automatic controller 10. The driving degree of the movable plate 321 is automatically controlled as the driving speed of the motor 21 is controlled by controlling the driving of the motor 21 by calculating with the rotation speed.

In addition, a safety device 70 is installed to prevent the movable plate from being raised or lowered more than necessary. The safety device is provided on an upper side of the lifting platform 322 vertically extended downwardly at one end of each movable plate 321. Each of the vertical frame 311 of the bed frame 31 is installed on the pressing piece 71, the pressing pin 72 is installed on the lower side, and the guide piece 323 for guiding the lifting of the platform. When the lowering point of the movable plate 321 is laid on both sides and reaches the bottom dead center, the first limit latch 73 and the movable plate 321 are lifted by the pressing piece 71 to short-circuit the contacts. When it reaches top dead center, it consists of the 2nd limit switch 74 pressed by the push pin 72, and a contact short-circuited.

Accordingly, when any one of the first or second limit switches 73 and 74 is short-circuited, the automatic controller 10 detects this and stops the driving of the motor 21. It will not lift too much.

Of course, the safety device is not limited to the limit switches 73 and 74, and an optical sensor may be provided at upper and lower dead center positions.

The mattress 32 of the bed, like a general mattress, the upper portion of the mattress paper 32a is made of non-woven fabric, sponge, wool, chemical cotton, fabric, etc., a plurality of springs (32b) is installed in the lower portion of the mattress paper The lower ends of these springs are configured to be supported by eight movable plates 321.

Accordingly, eight movers 20 are also provided. When the movable plates 321 are selectively lifted by these movers, the springs 32b supported by the movable plates are lifted, so that the upper ends of these springs are lifted. The eight parts of the mattress paper (32a) that is placed on it will be selectively raised or turned off.

Meanwhile, in the above embodiment, the mattress 32 is divided into eight parts as an example, but is not necessarily limited thereto.

In other words, the results of the experiment are preferably divided into eight equal parts corresponding to the head, shoulders, chest, lumbar spine, hips, thighs, calves, and feet of the body, but may be further subdivided into eight equal parts or more to obtain a finer effect. In addition, each of the divided parts, as well as each of the movable plate 321 may have a different width (ℓ), which may be different in the case of dividing the body into several equal parts the width of each part is the same Because you may not.

Operation of the automatic bed according to the embodiment of the present invention configured as described above is as shown in FIG.

First, in order to maintain a comfortable body pressure distribution pattern according to the user's body type, the user may enter the user's gender, height, and weight, or, in the case of an existing user, select a mode from the user database. There is a mode and a user mode.

The automatic mode maintains a comfortable body pressure ratio by body part through comparison with the body pressure database, and uses the user mode when it is inconvenient in the automatic mode.

The user mode uses the controller 80 installed in the automatic controller 10 for each individual to measure the comfort body pressure for each sleeping posture and accumulates it.

That is, each part of the mattress 32 is adjusted through comparison with the comfort body pressure database composed of the average value of the cumulative stored individual body pressure ratios.

After determining the mode, the human body type is classified using the gender, height, and weight inputted according to the user.

At this time, the classification of the human body type is determined for each group according to the human body classification classification range presented for each of the eight divided parts of the mattress (32).

Next, by measuring the body pressure distribution of the user to calculate the body pressure ratio for each part of the mattress 32 and determine the sleeping posture through the procedure of sleeping posture recognition.

In addition, when the measured body pressure ratio of each part is different from the comfort body pressure database, the corresponding motor among the drivers 20 is selectively operated, so that the motor 21 and the jack 22 are operated to operate the corresponding movable plate 321. Ascending or descending to adjust the height for each of the eight divided parts of the mattress 32, and if the same goes to the end input comparison step.

Thereafter, if the end is input, the program ends. Otherwise, the process moves to the body pressure distribution measuring step and the process is performed again.

The adjuster has a selection button 81 of 1 to 8 of each driver 20 installed at the corresponding positions of the eight parts of the mattress 32 and the height adjustment state of each part of the mattress 32 in steps 1 to 10. A level display section 82, which is divided into LEDs, an up button 83 and a down button 84 for adjusting the drivers 20 selected by the operation of the selection buttons 1 to 8 above, and A zero button 85 for returning the height to the zero state, that is, the initial state, and all zero buttons 86 for returning all the portions to the initial state simultaneously.

Therefore, when adjusting to the user mode using the adjuster, first select the driver 20 located in the required portion by pressing the selection button 81, and then press the required button of the up button 83 and the down button 84. .

In this case, since the automatic controller 10 operates the corresponding driver 20, the selected portion of the mattress 32 is adjusted up or down, and the degree of the adjustment is displayed through the corresponding level display 82.

When the adjustment is completed, the operation of the up / down button may be stopped.

The automatic bed according to the embodiment of the present invention, according to the sex, height, weight of the user, as well as lying posture (right lying posture, side lying posture, lying down posture), each part of the body optimal body pressure distribution pattern By keeping it safe, the lying posture is comfortable and comfortable, allowing you to get a good quality sleep.

In addition, the above-mentioned advantages can be used not only for the general person, but especially for a patient in a hospital, that is, a medical bed for preventing bedsores, as well as for a variety of purposes, such as a disabled or elderly patient who is inconvenient to move.

And, beyond the simple design development of bed technology, the development of an ergonomic mattress system in consideration of human sensitivities can be greatly contributed to the advancement of bed technology.

Claims (11)

An automatic controller (10) storing a control program according to the optimal body pressure distribution ratio of each part of the body measured according to the sex, height, weight, and lying posture of the user, and a plurality of drivers (20) selectively operated by the control of the controller. ) And a plurality of movable plates 321 which are mounted on the bed frame 31 provided with these drivers at regular intervals and whose lower portions are lifted vertically by the drivers, respectively. In accordance with the bed 30 having a mattress 32, the corresponding portion of the upper surface is elevated, and detects the body pressure of each part of the body according to the user's lying position lying on the mattress 32 and the detected body pressure value is the automatic controller If it is sent to (10), the controller compares the body pressure value with the stored body pressure distribution ratio, and if there is a portion where a deviation occurs, the mat can operate the driver 20 corresponding to the portion. Automatic bed, characterized in that consisting of a body pressure sensor 40 is installed at a predetermined interval on the upper surface portion of the switch 32. The automatic bed according to claim 1, wherein the automatic controller (10) is composed of a main controller (10a) and a plurality of sub-controllers (10b). The main controller 10a of claim 2, wherein the main controller 10a includes an analog multiplexer for converting resistance values sensed from the body pressure sensors 40 into an analog signal, an amplifier for amplifying the analog signal, and amplified analog signal. An A / D converter converting the value into a value, a memory unit storing data that can be compared with the digital value, and a signal controlling the operation of the plurality of drivers 20 by comparing the data stored in the memory unit with the digital value. And a central processing unit (CPU) for outputting the control unit (10b), and an interface connecting the central processing unit and the memory unit with a converter. The driver 20 and the movable plate 321 lifted by the driver are configured to traverse the mattress 32 into six equal parts corresponding to the head, shoulders, chest, waist, hips, and feet of the body. Self-adhesive bed characterized in that 6 each installed separately. The driver 20 and the movable plate 321 which are lifted by the driver according to claim 1, wherein the mattress 32 is formed by eight corresponding to the head, shoulders, chest, lumbar spine, hip, thigh, calf, and foot of the body. Self-adhesive bed characterized in that each of the eight divided into equal sections installed. The automatic bed according to claim 1, wherein the driver (20) and the movable plate (321) lifted by the driver are provided with eight or more by dividing the mattress (32) into eight or more equal sections. 2. The driver (20) according to claim 1, wherein the driver (20) comprises a motor (21) and a jack (22) for vertically elevating the movable plate (321) by converting the rotational motion of the motor into a lifting motion. Auto bed. The automatic bed according to claim 1, wherein the movable plate (321) has different front and rear widths. According to claim 1, The driver 20 counts the number of revolutions in accordance with the operation of the driver is sent to the automatic controller 10, this automatic controller controls the operation of the driver 20, the movable plate 321 is Auto bed, characterized in that to install a counter 60 to control the degree of lifting. 10. The counter 60 is rotated by the driver 20. The counter 60 has a rotational disk 61 formed with a plurality of through-holes 611 at regular intervals, and a peripheral portion of the rotational disk. It is installed on both sides of the automatic bed, characterized in that consisting of an optical sensor 62 having a light emitting element 621 and a light receiving element 622 to send and receive light each time the through-holes (611) pass. The mattress 32 and the plurality of selection buttons 81 for selecting each of the plurality of actuators 20 installed in the respective portions corresponding to the plurality of parts of the mattress 32 in the automatic controller 10. A level display unit 82 for displaying the height adjustment state of each part, an up button 83 and a down button 84 for adjusting the drivers 20 selected by the operation of the plurality of selection buttons 83 to be elevated; The user mode adjuster 80 is provided with a zero button 85 for returning the height of the selected part to the initial state, and all zero buttons 86 for simultaneously returning each part to the initial state. Automatic bed.