WO2017065506A1

WO2017065506A1 - Pressure sensor-based posture-changing smart electric bed

Info

Publication number: WO2017065506A1
Application number: PCT/KR2016/011466
Authority: WO
Inventors: 오연호; 김경훈
Original assignee: (주)한림의료기
Priority date: 2015-10-15
Filing date: 2016-10-13
Publication date: 2017-04-20
Also published as: KR101613044B1

Abstract

The present invention relates to a smart electric bed which enables automatic changing of a user's posture on the basis of pressure information detected in real time in accordance with the user's posture such that the user can be in a more comfortable state. A smart electric bed, according to an embodiment of the present invention, can comprise: a lower frame (10) which forms the lower part of a smart electric bed (100) and has casters (11) installed on both sides of the front and both sides of the back; an upper frame (20) which is disposed above the lower frame (10); a bed unit frame (40) which is disposed above the upper frame (20) and provides a space on which a first user of the smart electric bed (100) can lie; a plurality of load cells (36) which are installed away from one another on the bed unit frame (40), detect the pressure applied by means of the first user, and generate a detection signal; an operating unit (30); and a control unit (60) which is for controlling the operation of the operating unit (30).

Description

[Correction 02.11.2016 by Rule 26] Sensor-based Posture Transformation Smart Electric Bed

The present invention relates to a pressure sensor-based posture converting smart electric bed, more specifically, to automatically convert the user's posture to be in a more comfortable and comfortable state based on the pressure information detected in real time according to the user's posture. It relates to a smart electric bed that is implemented.

In general, the bed is a fixed type that is fixed in its shape and height is mainly used. However, even in such a fixed bed, the bed used in the hospital, etc. can be modified in such a way that the part of the body, such as the head, legs, waist tilted up and down in consideration of the patient's condition.

The bed used for a patient or elderly person who is inconvenient to move has a structure in which the user's back portion is angled upward to provide convenience in use. Separately, the mattress located at the user's leg has manual operation or electric driving force. It is configured to be angled upward by.

Therefore, the user who is inconvenient to move up one side of the mattress to watch TV or to read and relax. The angle adjustment structure of the mattress is made according to the lifting and lowering of the screw shaft by the rotation of the drive motor, the user himself to control the operating time of the drive motor to be configured to be conveniently used to adjust the desired angle.

In addition, the lower one side of the patient bed as described above is configured to be able to adjust the angle by the manual operation as well as the angle adjustment by the drive motor as described above, the manual operation that can not be adjusted by the user himself in the near root Due to the inconvenience, it is common to adopt a bed having an automatic angle adjustment structure.

On the other hand, Figure 1 schematically shows the trend of aging of major countries in connection with the present invention. Referring to FIG. 1, due to rapid aging, Korea is also expected to enter an aging society by 2018. It is predicted that the number of seriously ill or highly disabled persons who need to stay in bed all day due to various diseases or weakened muscles will increase due to the old age, and the demand for beds that consider the convenience for the elderly or disabled people who spend much time in bed is gradually increasing. have.

In addition, the elderly, people with disabilities, the general public, even in the case of chronic diseases, the proportion of bed life is increasing, the need for prevention of bedsores, correction of sleeping posture, the convenience of care.

However, the bed has been widely used in the prior art was not easy to change the posture by the user himself, there was a problem that can be inconvenient to the caregiver or guardian cares for the user as well as the user himself. Such a conventional bed is a simple modification of the bed used by the general public in daily life, and has a disadvantage in that it is not optimized for patients or elderly people whose behavior is not free.

The present invention has been made to solve the conventional problems as described above, based on the pressure information sensed in real time according to the user's posture is implemented to automatically convert the user's posture to be in a more comfortable and comfortable state The purpose is to provide an electric bed to the user.

In addition, the present invention is the bed itself is used for assisting not only the daily life of the individual, but also for assisting the elderly by supporting the basic displacement of the elderly or disabled, meal activities, reading and watching TV, standing in the bed, etc. The purpose of the present invention is to provide users with a smart electric bed that can perform functions as a variety of assistive devices.

In addition, an object of the present invention is to provide a user with a smart electric bed to promote healthy sleep management and to maintain health by detecting the sleep posture by detecting the body pressure signal of the real-time sleep posture.

In addition, the present invention can detect the user's lying posture through body pressure detection in wasted box and effectively prevent pressure sores that can occur as a fixed posture is maintained for a long time, and take a comfortable sleeping posture by detecting a healthier sleeping posture The purpose is to provide a user with a smart electric bed that allows.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those skilled in the art from the following description. It can be understood.

Smart electric bed 100 according to an embodiment of the present invention for realizing the above-described problem is. A lower frame 10 which forms a lower portion of the smart electric bed 100 and has casters 11 installed at both front and rear sides thereof; An upper frame 20 disposed above the lower frame 10; A bed frame frame 40 disposed above the upper frame 20 and providing a space for lying down to a first user of the smart electric bed 100; A plurality of load cells 36 installed at spaced apart positions of the bed frame 40 and generating a detection signal by sensing a pressure applied by the first user; A driver 30; And a control unit 60 for controlling the operation of the driving unit 30, wherein the bed unit frame 40 includes: a back plate 41 forming a front portion of the bed unit frame 40; A connecting plate 42 whose front side is connected to the rear of the back plate 41; A seating plate 43 whose front side is connected to the rear of the connecting plate 42; And a leg plate 44 whose front side is connected to the rear of the seating plate 43 and forms a rear portion of the bed frame 40, wherein the driving unit 30 includes the lower frame 10. An elevating actuator 31 for elevating up and down; A tilting actuator 32 supporting lateral tilting of the bed frame 40; Back plate actuator for raising and lowering the front of the back plate 41 by rotating the back plate 41 around the first hinge portion 47 to which the back plate 41 and the connecting plate 42 are connected ( 33); And a seating plate actuator for raising and lowering the rear of the seating plate 43 by rotating the seating plate 43 about the second hinge portion 48 to which the connecting plate 42 and the seating plate 43 are connected. It further includes; and the third hinge portion 49, the leg plate 44 is connected to the seat plate 43 and the leg plate 44 corresponding to the lifting and lowering of the seat plate 43 The front of the leg plate 44 is raised and lowered while being folded around the center, and the controller detects the posture information of the first user using the detection signals generated by the plurality of load cells 36, and detects the detected position. By controlling the driver based on posture information of the first user, the posture of the first user may be converted.

The apparatus may further include a memory 68 in which posture information related to pressure data according to a preset sleep posture is registered, wherein the controller is one of the posture information registered in the memory 68 and the first posture information. Compare the detected posture information of the first user, and if the difference value between the two results exceeds a predetermined threshold, convert the posture of the first user so as to be close to the pressure data stored in the first posture information. Can be induced.

The apparatus may further include a user input unit 67 that receives user information on height, weight, gender, age, and disease of the first user, wherein the controller is configured to store the memory 68 based on the input user information. The first posture information may be selected from the posture information registered in the list.

In addition, each of the plurality of load cells 36 may include a plurality of upper electrodes 37a arranged in parallel to be spaced apart at a predetermined interval in the longitudinal direction; A plurality of lower electrodes (37b) positioned below the plurality of upper electrodes (37a) and disposed in parallel to be spaced apart at predetermined intervals in a horizontal direction crossing the longitudinal direction; And a dielectric layer 38 disposed between the upper electrode 37a and the lower electrode 37b, wherein a predetermined input signal is provided to the plurality of upper electrodes 37a and the plurality of lower electrodes 37b. Is applied, and when the dielectric layer 38 is deformed according to the pressure applied by the first user, the deformed dielectric layer 38 is at least one of the plurality of upper electrodes 37a and the plurality of lower electrodes 37b. The output signal measured from one is changed, and the load cell 36 may generate the detection signal by using the change of the output signal.

In addition, the posture information of the first user includes pressure distribution information for each part of the body of the first user, and a pressure at which a pressure exceeding a first threshold pressure is set to a specific part of the body of the first user. When applied over time, the controller may change the posture of the first user such that the pressure applied to the specific portion falls below a second threshold pressure lower than the first threshold pressure.

In addition, the lower frame 10, the lower left frame and the lower right frame having a long shape in the longitudinal direction; And axially rotatable, a left end of which is installed on an inner side of the lower left frame, and a right end of which is installed on an inner side of the lower right frame to connect the lower left frame and the lower right frame. The lower connecting rod 12 and the rear lower connecting rod 12; further comprising, the upper frame 20, the left upper frame and the right upper frame having a long shape in the longitudinal direction; And a front upper connecting rod 22 and a rear upper connecting rod 22 configured to be axially rotatable and installed between the left upper frame and the right upper frame to connect the left upper frame and the right upper frame. It may further include.

In addition, one end is connected to the lower connecting rod 12, the other end is connected to the connecting rod link portion 13 connected to the upper connecting rod 22; And one end is installed at the front end of the elevating actuator 31, and the other end thereof is an elevating link part 31a connected to the upper connecting rod 22. The end of the elevating actuator 31 is tensioned. In case, the elevating link portion 31a rotates the upper connecting rod 22 in one direction, and the connecting rod link portion 13 is connected to the upper connecting rod 22 according to the one direction rotation of the upper connecting rod 22. The connecting rod link portion 13 rotated in the one direction about the axis of the elevating the lower connecting rod 12 and the lower frame 10 to the upper portion of the elevating actuator 31 When the tip is contracted, the elevating link portion 31a rotates the upper connecting rod 22 in the other direction, and the connecting rod link portion 13 is rotated according to the other rotation of the upper connecting rod 22. The shaft of the upper connecting rod 22 is With the connecting rod link (13) rotates in the said other direction, and rotated in the other direction it may be lowered to the lower connecting rod 12 and the lower frame 10 to the lower portion.

In addition, the first tilting link portion 27 is rotatably installed on the bed projection (26) installed on the lower portion of the bed frame 40, the upper end (27a); A second tilting link portion 28 having an upper end 28a fixed to the bed frame 40; And a tilting actuator fixing part 25 for fixing the tilting actuator 32 to a frame connected to the lower frame 20, further comprising a lower end of the first tilting link part 27 and the second The lower end of the tilting link portion 28 is connected to the tip of the tilting actuator 32, the first tilting link portion 27 is rotated at a predetermined angle in response to the tension or contraction of the tilting actuator 32 According to the rotation of the first tilting link part 27, the lateral tilting of the bed frame 40 is possible.

In addition, the tilting member 24 is installed between the lower frame 20 and the bed frame 40, the tilting member 24, the upper surface of the lower surface of the bed frame 40 An upper tilting member 24b installed at the upper portion; A lower tilting member 24a having a lower surface installed on an upper surface of the lower frame 20; And a tilting shaft 24c connecting the upper tilting member 24b and the lower tilting member 24a to the upper tilting member 32 in response to tension or contraction of the tip of the tilting actuator 32. 24b) is rotated at a predetermined angle about the tilting shaft 24c, and the lateral tilting of the bed frame 40 is possible according to the rotation of the upper tilting member 24a.

In addition, the back plate connecting rod 45 is installed on the lower surface of the back plate 41; A first bracket 33a rotatably connected to a front end of the back plate actuator 33 and the other end connected to a back plate connecting rod 45; Seating plate connecting rod 46 is installed on the lower surface of the seating plate 43; And a second bracket 34a rotatably connected to one end of the seat plate actuator 34 and the other end connected to the seat plate connecting rod 46, wherein the front end of the back plate actuator 33 is further included. A force is applied to the back plate connecting rod 45 while the first bracket 33a rotates in response to the tension or contraction of the back plate, and the force applied to the back plate connecting rod 45 is the front of the back plate 41. Is raised and lowered, a force is applied to the seating plate connecting rod 46 while the second bracket 33b rotates in response to the tension or contraction of the tip of the seating plate actuator 34, and the seating plate connecting rod 46 The force applied to) may raise and lower the rear of the seating plate 43.

The present invention can provide a user with a smart electric bed that is implemented to automatically convert the user's posture to be in a more comfortable and comfortable state based on the pressure information sensed in real time according to the user's posture.

In addition, the present invention is the bed itself is used for assisting not only the daily life of the individual, but also for assisting the elderly by supporting the basic displacement of the elderly or disabled, meal activities, reading and watching TV, standing in the bed, etc. It can provide the user with a smart electric bed that can perform the function as a variety of assistive devices.

In addition, the present invention can provide a user with a smart electric bed to promote healthy sleep management and to maintain health by detecting the sleep posture by detecting the body pressure signal of the real-time sleep posture.

In addition, the present invention can detect the user's lying posture through body pressure detection in wasted box and effectively prevent pressure sores that can occur as a fixed posture is maintained for a long time, and take a comfortable sleeping posture by detecting a healthier sleeping posture A smart electric bed can be provided to the user.

On the other hand, the effect obtained in the present invention is not limited to the above-mentioned effects, other effects that are not mentioned will be clearly understood by those skilled in the art from the following description. Could be.

The following drawings, which are attached to this specification, illustrate one preferred embodiment of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.

1 schematically shows the aging trend of major countries in connection with the present invention.

Figure 2 shows a block diagram of a smart electric bed according to an embodiment of the present invention.

Figure 3 schematically shows the structure of a load cell that can be applied to the smart electric bed of the present invention.

4A and 4B show the overall structure of the smart electric bed related to an example of the present invention.

5 is an embodiment of the elevating operation of the smart electric bed of the present invention.

6a to 6c are embodiments for the lateral tilting operation of the smart electric bed of the present invention.

7a and 7b is an embodiment for the user posture conversion operation of the smart electric bed of the present invention.

8 is a flowchart illustrating one embodiment of a method of deriving a posture change of a user according to the present invention.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. In addition, one Example described below does not unduly limit the content of this invention described in the Claim, and the whole structure described in this Embodiment is not necessarily required as a solution of this invention.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings. Throughout the specification, when a part is 'connected' to another part, this includes not only 'directly connected' but also 'indirectly connected' with another element in between. do. In addition, "including" a certain component does not exclude other components unless specifically stated otherwise, it means that may further include other components.

Hereinafter, with reference to the drawings will be described in detail the configuration and operation of the smart electric bed to be proposed by the present invention.

Figure 2 shows a block diagram of a smart electric bed according to an embodiment of the present invention. 2, the smart electric bed 100 of the present invention includes a control unit 60, a power supply unit 61, a communication unit 62, an output unit 63, a user input unit 67, a memory 68, and a driving unit. 30, the sensing unit 35, and the like.

The controller 60 typically controls the overall operation of the smart electric bed 100. For example, the controller 60 performs related control and processing for the operation of the elevating actuator 31, the tilting actuator 32, the back plate actuator 33, the seat plate actuator 34, and the like.

The power supply unit 61 receives an external power source and an internal power source under the control of the control unit 60 to supply power for operation of each component.

The communication unit 62 may include one or more modules that enable wireless communication between the smart electric bed 100 and the wireless communication system or between the smart electric bed 100 and the network in which the terminal is located. For example, the communication unit 62 may include a broadcast reception module for receiving a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel, a base station, an external terminal, and a wireless signal with at least one of a mobile station and a server. Mobile communication module for transmitting and receiving, wireless Internet module for wireless internet access, Bluetooth, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, etc. A short-range communication module to perform and a module for acquiring a location may include a location information module such as a Global Position System (GPS) module.

The output unit 63 is to generate an output related to visual, auditory or tactile senses, and may include a display unit 64, a sound output module 65, an alarm unit 66, a haptic module, and the like.

The display unit 64 displays (outputs) information processed by the smart electric bed 100. For example, when the smart electric bed 100 is in the sensing mode, a user interface (UI) or a graphic user interface (GUI) related to body pressure information of the user is displayed. The display unit 64 may display posture information stored in the memory 68.

The display unit 64 according to the present invention supports 2D and 3D display modes. That is, the display unit 64 according to the present invention may have a configuration in which a switch liquid crystal is combined with a general display device. In addition, the optical parallax barrier may be operated using a switch liquid crystal to control the traveling direction of the light to separate the light to reach the left and right eyes. Therefore, when a combined image of the right eye image and the left eye image is displayed on the display device, the user's point of view of the image corresponding to each eye is felt as if displayed in three dimensions.

The display unit 64 may include a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display. The display may include at least one of a flexible display and a 3D display.

According to the embodiment of the smart electric bed 100, two or more display units 64 may exist. For example, the plurality of display units 64 may be spaced apart or integrally disposed on one surface of the smart electric bed 100, or may be disposed on different surfaces.

The sound output module 65 may output audio data received from the communication unit 62 or stored in the memory 68. The sound output module 66 may also output a sound signal related to a function (eg, body pressure detection of a user, control of a driver, etc.) performed by the smart electric bed 100. The sound output module 65 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 66 outputs a signal for notifying occurrence of an event of the smart electric bed 100. Examples of the event generated in the smart electric bed 100 may include a case where a difference value between the posture information registered in the memory 68 and the posture information of the user detected by the controller 60 exceeds a predetermined threshold.

The alarm unit 66 may output a signal for notifying the occurrence of an event by vibration, in addition to a video signal or an audio signal. The video signal or the audio signal may be output through the display unit 64 or the audio output module 65. In this case, the display unit 64 and the audio output module 65 may be a kind of alarm unit 66. May be classified.

The user input unit 67 is operated to receive a command for controlling the operation of the smart electric bed 100 and may include a plurality of operation units. The operation units may also be referred to collectively as the operation unit.

In particular, the user input unit 67 may receive user information. The user information may include a user's height, weight, gender, age and disease status. The user information may be utilized to select one of the posture information registered in the memory 68.

The memory 68 may store a program for processing and controlling the controller 60 or may perform a function for temporarily storing input / output data. The memory 68 may also store a frequency of use of each of the data. In addition, the memory unit 68 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

In addition, the memory 68 stores attitude information related to pressure data according to a preferred sleeping posture. The posture information stored in the memory 68 serves as a reference for whether the user's sleeping posture is uncomfortable, and accordingly, it is determined whether the posture change of the user should be induced.

The memory 68 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.). ), Random Access Memory (RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic At least one type of storage medium may include a memory, a magnetic disk, and an optical disk. The smart electric bed 100 of the present invention may operate in association with a web storage that performs a storage function of the memory 68 on the Internet.

The driving unit 30 includes a lifting lowering actuator 31, a tilting actuator 32, a back plate actuator 33, a seat plate actuator 34, and the like. A detailed description of the driver 30 will be described later.

The sensing unit 35 detects the current state of the smart electric bed 100 and generates a sensing signal for controlling the operation of the smart electric bed 100.

The sensing unit 35 may further include a load cell 36 for sensing a pressure applied by the user. The structure of the load cell 36 is shown in more detail in FIG. 3.

Figure 3 schematically shows the structure of a load cell that can be applied to the smart electric bed of the present invention. As shown in FIG. 3, the load cell 36 includes a plurality of upper electrodes 37a, a plurality of lower electrodes 37b, a dielectric layer 38, and the like.

The plurality of upper electrodes 37a are arranged in parallel to be spaced apart by a predetermined interval in the longitudinal direction. The plurality of lower electrodes 37b are positioned below the plurality of upper electrodes 37a and are disposed in parallel to be spaced apart by a predetermined interval in the horizontal direction. The plurality of upper electrodes 37a and the plurality of lower electrodes 37b form directions crossing each other. A predetermined input signal is applied to the plurality of upper electrodes 37a and the plurality of lower electrodes 37b.

The dielectric layer 38 is disposed between the upper electrode 37a and the lower electrode 37b. The dielectric layer 38 may be deformed by the pressure applied by the user. The dielectric layer 38 thus modified changes the output signal measured from at least one of the plurality of upper electrodes 37a and the plurality of lower electrodes 37b, and the load cell 36 receives the sensing signal by using the change of the output signal. Create

The controller 60 receives the detection signal generated by the load cell 36, and may determine the position of the pressure and the magnitude of the pressure applied using the detection signal. The controller 60 may determine the pressure distribution of the user's body pressure by using the pressure information, and thus detect the user's posture information.

On the other hand, Figures 4a and 4b shows the overall structure of the smart electric bed related to an example of the present invention.

4A and 4B, the smart electric bed 100 of the present invention is composed of a lower frame 10, an upper frame 20, a bed frame 40, and the like.

The lower frame 10 forms the lower part of the smart electric bed 100. Four casters 11 are respectively installed on both front and rear sides of the lower frame 11, and the casters 11 support mobility of the smart electric bed 100.

The lower frame 10 is composed of a lower left frame and a lower right frame having a long shape in the longitudinal direction. Further, the front lower connecting rod 12 and the rear lower connecting rod 12 are installed between the lower left frame and the lower right frame.

The front lower connecting rod 12 and the rear lower connecting rod 12 are configured to be rotatable in the axial direction. The left end of the lower connecting rod 12 is installed on the inner side of the lower left frame, the right end of the lower connecting rod 12 is installed on the inner side of the lower right frame.

The upper frame 20 is disposed above the lower frame 10. The upper frame 20 is composed of a left upper frame and a right upper frame having a long shape in the longitudinal direction.

On both sides of the front and rear of the upper frame 20, the upper frame fixing portion 21 protruding downward is provided. A front upper connecting rod 22 is installed at the upper frame fixing part 21 positioned at the front, and a rear upper connecting rod 22 is installed at the upper frame fixing part 21 positioned at the rear.

The front upper connecting rod 22 and the rear upper connecting rod 22 are configured to be rotatable in the axial direction.

The head board 1 is installed at the front and rear of the bed frame 40, and side rails 2 are provided at both sides of the bed frame 40. The side rails 2 may be provided in plurality, and may be lifted up and down. When the side rail (2) is raised to prevent the separation of the user lying on the bed frame 40, and when the side rail (2) is lowered to allow the patient or the elderly to easily rise and fall on the bed.

Bed frame 40 provides a space for the user to lie down, the mattress may be disposed on the upper surface. The bed frame 40 is composed of a back plate 41, a connecting plate 42, a seating plate 43, a leg plate 44, and the like. The back plate 41, seating plate 43, leg plate 44 is coupled by a hinge portion. That is, the back plate 41 and the connecting plate 42 are connected by the first hinge portion 47, and the connecting plate 42 and the seating plate 43 are connected by the second hinge portion 48, The seating plate 43 and the leg plate 44 are connected by the third hinge portion 49. Since the hinge part has a structure that is rotatably coupled, the attitude change of the user supported by the bed frame 40 can be induced.

On the other hand, Figure 5 is an embodiment of the lifting operation of the smart electric bed of the present invention. Referring to FIG. 5, the lower frame 10 may be moved up and down using the elevating actuator 31.

Specifically, the tip of the elevating actuator 31 is connected to one end of the elevating link portion 31a, and the other end of the elevating link portion 31a is connected to the upper connecting rod 22. In addition, one end of the connecting rod link portion 13 is connected to the lower connecting rod 12, and the other end of the connecting rod link portion 13 is connected to the upper connecting rod 22.

When the tip of the elevating actuator 31 is tensioned, the elevating link portion 31a rotates the upper connecting rod 22 in one direction, and the connecting rod link portion 13 is upper part in accordance with the one-way rotation of the upper connecting rod 22. It is rotated in one direction about the axis of the connecting rod (22). The connecting rod link portion 13 rotated in one direction raises the lower connecting rod 12 upwards, and the lower frame 10 also rises upward.

When the tip of the elevating actuator 31 is contracted, the elevating link portion 31a rotates the upper connecting rod 22 in the other direction, and the connecting rod link portion 13 according to the other direction of the upper connecting rod 22 being rotated. Is rotated in the other direction about the axis of the upper connecting rod (22). The connecting rod link portion 13 rotated in the other direction lowers the lower connecting rod 12 downward, and the lower frame 10 is also lowered downward.

In addition, one end of the pivot connecting portion 14 is connected to the upper connecting rod 22, the other end of the pivot connecting portion 14 is connected to the front and rear link portion 15. The front and rear link portions 15 connect the other end of the rotation connecting portion 14 positioned at the front and the other end of the rotation connecting portion 14 positioned at the rear to each other.

As the upper connecting rod 22 is rotated in one direction or the other direction, the rotation connecting portion 14 also rotates in one direction or the other direction. As a result, the front and rear link portions 15 are moved up and down.

Therefore, even if there is only one elevating actuator 31, the elevating operation can be driven. That is, even if the elevating actuator 31 is connected only to the upper connecting rod 22 located at the rear, the pivot connecting portion 14 and the front and rear link portions 15 are connected to the upper connecting rod 22 at the front and the upper connecting rod 22 at the rear. ), The upper connecting rod 22 located in front can also be operated together with the upper connecting rod 22 in the rear. Since the additional elevating actuator 31 is unnecessary, there is an economical advantage in terms of cost while simplifying the structure.

On the other hand, Figures 6a to 6c is an embodiment for the lateral tilting operation of the smart electric bed of the present invention. 6A through 6C, the tilting actuator 32 may be used to laterally tilt the bed frame 40.

In detail, the first tilting link part 27 and the second tilting link part 28 form a triangular shape. The upper end 27a of the first tilting link part 27 is rotatably installed on the bed protrusion 26 installed under the bed part frame 40, and the upper end 28a of the second tilting link part 28. Is fixed to the bed frame 40. The lower end of the first tilting link unit 27 and the lower end of the second tilting link unit 28 are rotatably connected to the tip of the tilting actuator 32.

The tilting actuator fixing part 25 is installed in the frame connected to the lower frame 20, and serves to fix the tilting actuator 32. Accordingly, the first tilting link part 27 may be rotated at a predetermined angle in response to the tension or contraction of the tilting actuator 32, and the bed part frame 40 may be rotated according to the rotation of the first tilting link part 27. Lateral tilting is possible.

In addition, the tilting member 24 is installed between the lower frame 20 and the bed frame 40. The upper tilting member 24b of the tilting member 24 is installed on the lower surface of the lower frame 20, and the lower tilting member 24a of the tilting member 24 is installed on the upper surface of the bed frame 40. The upper tilting member 24b and the lower tilting member 24a are connected by the tilting shaft 24c, and the upper tilting member 24b is rotatable about a tilting axis 24c within a preset angle.

When the tip of the tilting actuator 32 is stretched or contracted, the upper tilting member 24b is rotated at a predetermined angle about the tilting shaft 24c. Accordingly, the bed frame 40 may be tilted laterally.

On the other hand, Figure 7a and 7b is an embodiment for the user posture conversion operation of the smart electric bed of the present invention. Referring to FIGS. 7A and 7B, a posture change of a user may be induced by using the back plate actuator 33 and the seat plate actuator 34.

Specifically, the back plate connecting rod 45 is installed on the lower surface of the back plate 41, the seat plate connecting rod 46 is installed on the bottom surface of the seat plate 43. In addition, the front end of the back plate actuator 33 is rotatably connected to one end of the first bracket 33a, and the other end of the first bracket 33a is connected to the back plate connecting rod 45. The front end of the seating plate actuator 34 is rotatably connected to one end of the second bracket 33b, and the other end of the second bracket 33b is connected to the seating plate connecting rod 46.

When the front end of the back plate actuator 33 is stretched or contracted, a force is applied to the back plate connecting rod 45 while the first bracket 33a is rotated. Accordingly, the front of the back plate 41 can be raised and lowered.

Similarly, when the front end of the seating plate actuator 34 is tensioned or contracted, a force is applied to the seating plate connecting rod 46 while the second bracket 33b is rotated. Accordingly, the rear of the seating plate 43 can be raised and lowered. Corresponding to the lifting and lowering of the seat plate 43, the leg plate 44 is folded around the third hinge portion 49 while the front of the leg plate 44 is raised and lowered together.

On the other hand, Figure 8 is a flow chart of an embodiment of a method for deriving a posture transformation of the user in accordance with the present invention.

Referring to FIG. 8, the load cell 36 detects body pressure for each part of the user and generates a detection signal (S10).

The controller 60 detects posture information of the user using the detection signal. The posture information of the user may include pressure distribution information for each part of the user's body.

Subsequently, the controller 60 determines an optimal sleeping posture of the user (S20) and controls the driving unit 30 to induce a change in the posture of the user (S30). The controller 60 controls the driver 30 based on the detected posture information of the user.

For example, in the memory 68, posture information related to pressure data according to a preferred sleeping posture is registered. The posture information may have different values depending on the height, weight, gender, age, and disease of the user.

The controller 60 selects first posture information, which is one of posture information registered in the memory 68, based on the user information input to the user input unit 67. The controller 60 compares the first posture information with the detected posture information of the user and determines whether to convert the posture. That is, when the difference between the two results exceeds a predetermined threshold, the user's posture is induced to be close to the pressure data stored in the first posture information.

In addition, when the controller 60 determines that a pressure exceeding a first threshold pressure is applied to a specific part of the user's body for more than a preset threshold time, the pressure applied to the specific part is greater than the first threshold pressure. The posture of the user may be changed so as to fall below the low second threshold pressure.

On the other hand, the above-described apparatus and method is not limited to the configuration and method of the embodiments described above, the embodiments may be a combination of all or part of each embodiment selectively so that various modifications can be made It may be configured.

10: lower frame

11: caster

12: lower connecting rod

13: connecting rod link

14: pivot connection

15: Front and rear link section

20: upper frame

21: upper frame fixing part

22: upper connecting rod

24: tilting member

24a: lower tilting member

24b: upper tilting member

24c: tilting axis

25: tilting actuator fixture

26: bed projection

27: first tilting link part

28: second tilting link portion

30: drive unit

31: elevating actuator

31a: lifting link unit

32: tilting actuator

33: Back plate actuator

33a: first bracket

34: seat plate actuator

34a: second bracket

35: sensing unit

36: load cell

37a: upper electrode

37b: lower electrode

38: dielectric layer

40: bed frame

41: Back plate

42: connecting plate

43: sitting board

44: leg plate

45: back plate connecting rod

46: seat plate connecting rod

60: control unit

100: smart electric bed

Claims

In the smart electric bed 100,

A lower frame 10 which forms a lower portion of the smart electric bed 100 and has casters 11 installed at both front and rear sides thereof;

An upper frame 20 disposed above the lower frame 10;

A bed frame frame 40 disposed above the upper frame 20 and providing a space for lying down to a first user of the smart electric bed 100;

A plurality of load cells 36 installed at spaced apart positions of the bed frame 40 and generating a detection signal by sensing a pressure applied by the first user;

A driver 30; And

Control unit 60 for controlling the operation of the drive unit 30, including,

The bed frame 40,

A back plate (41) forming a front portion of the bed frame (40);

A connecting plate 42 whose front side is connected to the rear of the back plate 41;

A seating plate 43 whose front side is connected to the rear of the connecting plate 42; And

The front is connected to the rear of the seating plate 43, the leg plate 44 forming a rear portion of the bed frame 40; further includes,

The drive unit 30,

An elevating actuator (31) for elevating the lower frame (10) up and down;

A tilting actuator 32 supporting lateral tilting of the bed frame 40;

Back plate actuator for raising and lowering the front of the back plate 41 by rotating the back plate 41 around the first hinge portion 47 to which the back plate 41 and the connecting plate 42 are connected ( 33); And

Seating plate actuator for lifting the rear of the seating plate 43 by rotating the seating plate 43 around the second hinge portion 48 to which the connecting plate 42 and the seating plate 43 are connected ( 34); more,

In response to the lifting and lowering of the seating plate 43, the leg plate 44 is folded around the third hinge portion 49 to which the seating plate 43 and the leg plate 44 are connected. 44) is going up and down,

The control unit detects posture information of the first user by using the detection signals generated by the plurality of load cells 36, and controls the driving unit based on the detected posture information of the first user, thereby providing the first user. Smart electric bed, characterized by inducing a transformation of the posture.
The method of claim 1,

And a memory 68 in which posture information related to pressure data according to a preset sleep posture is registered.

The controller compares the first posture information, which is one of the posture information registered in the memory 68, with the detected posture information of the first user, and when the difference between the two results exceeds a predetermined threshold. And inducing transformation of the posture of the first user to approach the pressure data stored in the first posture information.
The method of claim 2,

And a user input unit 67 for receiving user information on the height, weight, sex, age, and disease of the first user.

The control unit selects the first posture information from among the posture information registered in the memory (68) based on the input user information.
The method of claim 1,

Each of the plurality of load cells 36,

A plurality of upper electrodes 37a arranged in parallel in the longitudinal direction and spaced apart from each other;

A plurality of lower electrodes (37b) positioned below the plurality of upper electrodes (37a) and disposed in parallel to be spaced apart at predetermined intervals in a horizontal direction crossing the longitudinal direction; And

And a dielectric layer 38 disposed between the upper electrode 37a and the lower electrode 37b.

A predetermined input signal is applied to the plurality of upper electrodes 37a and the plurality of lower electrodes 37b,

When the dielectric layer 38 is deformed according to the pressure applied by the first user, the deformed dielectric layer 38 is measured from at least one of the plurality of upper electrodes 37a and the plurality of lower electrodes 37b. Change the output signal,

The load cell 36 is a smart electric bed, characterized in that for generating the detection signal by using the change in the output signal.
The method of claim 4, wherein

The posture information of the first user includes pressure distribution information for each part of the body of the first user,

When a pressure exceeding a first threshold pressure is applied to a specific portion of the body part of the first user for more than a preset threshold time, the control unit may determine that the pressure applied to the specific portion is lower than the first threshold pressure. Smart electric bed, characterized in that for changing the posture of the first user to fall below a second critical pressure.
The method of claim 1,

The lower frame 10,

A lower left frame and a lower right frame having a longitudinal shape; And

It is configured to be rotatable in the axial direction, the left end is installed on the inner side of the lower left frame, the right end is installed on the inner side of the lower right frame to connect the lower left frame and the lower right frame Further comprising a connecting rod 12 and the rear lower connecting rod 12,

The upper frame 20,

A left upper frame and a right upper frame having a shape elongated in the longitudinal direction; And

A front upper connecting rod 22 and a rear upper connecting rod 22 configured to be axially rotatable and installed between the left upper frame and the right upper frame to connect the left upper frame and the right upper frame; Smart electric bed comprising a.
The method of claim 6,

One end is connected to the lower connecting rod 12 and the other end is connected to the connecting rod link 13 connected to the upper connecting rod 22; And

One end is installed at the front end of the elevating actuator 31, the other end of the elevating link portion 31a connected to the upper connecting rod 22;

When the tip of the elevating actuator 31 is tensioned, the elevating link portion 31a rotates the upper connecting rod 22 in one direction, and the connecting rod link according to the one direction rotating of the upper connecting rod 22. The portion 13 rotates in one direction about the axis of the upper connecting rod 22, and the connecting rod link portion 13 rotated in the one direction moves the lower connecting rod 12 and the lower frame 10 upward. Raising,

When the tip of the elevating actuator 31 is contracted, the elevating link portion 31a rotates the upper connecting rod 22 in the other direction, and according to the other direction of the upper connecting rod 22. The connecting rod link portion 13 rotates in the other direction about the axis of the upper connecting rod 22, and the connecting rod link portion 13 rotated in the other direction includes the lower connecting rod 12 and the lower frame 10. Smart electric bed, characterized in that lowering).
The method of claim 1,

A first tilting link part 27 having an upper end 27a rotatably installed on a bed part protrusion 26 provided at a lower part of the bed part frame 40;

A second tilting link portion 28 having an upper end 28a fixed to the bed frame 40; And

And a tilting actuator fixing part 25 for fixing the tilting actuator 32 to a frame connected to the lower frame 20.

The lower end of the first tilting link unit 27 and the lower end of the second tilting link unit 28 are connected to the tip of the tilting actuator 32,

The first tilting link part 27 is rotated at a predetermined angle in response to the tension or contraction of the tilting actuator 32, and the bed part frame 40 is rotated according to the rotation of the first tilting link part 27. Smart electric bed characterized in that the lateral tilting is possible.
The method of claim 8,

And a tilting member 24 installed between the lower frame 20 and the bed frame 40.

The tilting member 24,

An upper tilting member 24b having an upper surface installed on a lower surface of the bed frame 40;

A lower tilting member 24a having a lower surface installed on an upper surface of the lower frame 20; And

And a tilting shaft 24c connecting the upper tilting member 24b and the lower tilting member 24a.

In response to the tension or contraction of the tip of the tilting actuator 32, the upper tilting member 24b is rotated at a predetermined angle about the tilting shaft 24c, and according to the rotation of the upper tilting member 24a. Smart bed, characterized in that the lateral tilting of the bed frame 40.
The method of claim 1,

A back plate connecting rod 45 installed on a bottom surface of the back plate 41;

A first bracket 33a rotatably connected to a front end of the back plate actuator 33 and the other end connected to a back plate connecting rod 45;

Seating plate connecting rod 46 is installed on the lower surface of the seating plate 43; And

One end is rotatably connected to the front end of the seating plate actuator 34, the other end is a second bracket (34a) connected to the seating plate connecting rod 46;

A force is applied to the back plate connecting rod 45 while the first bracket 33a rotates in response to the tension or contraction of the tip of the back plate actuator 33, and the force applied to the back plate connecting rod 45. Raises and lowers the front of the back plate 41,

A force is applied to the seating plate connecting rod 46 while the second bracket 33b rotates in response to the tension or contraction of the tip of the seating plate actuator 34, and the force applied to the seating plate connecting rod 46. Smart electric bed, characterized in that to raise and lower the rear of the seating plate (43).