JP6302769B2 - Seating assistance device - Google Patents

Description

  The present invention relates to an electric seating / separation assisting device that assists a caregiver's seating / seating operation, and more particularly, to a seating / seating assistance device capable of performing a stable seating operation with a sense of security.

  For a cared person such as a patient or a care recipient, standing up from a chair or bed (hereinafter referred to as a chair) is conscious of independence and leads to an increase in motivation for rehabilitation and servicing. However, the assistance of the operation when the cared person stands up from a chair or bed (hereinafter referred to as a chair or the like) or sits on the chair or the like is a considerable burden on the carer. In particular, when the caregiver is a small woman, the assistance of a caregiver who is heavy is a heavy burden. Therefore, as a mitigation means, there are many nursing care sites that use a stand-up assisting device (seating / seating assisting device) that assists the stand-up (or seating) operation when the cared person takes off and seats. There are two types of stand-up assisting devices: manual and electric ones. Conventionally, as electric ones, elevating seat chairs that assist the start-up by raising and lowering the seat chair, lift-up chairs that raise and lower the seat It has been known.

JP 2006-102403 A Utility Model Registration No. 3160122 JP 2007-154854 JP

  However, the conventional stand-up assisting machine has a large weight and volume, and requires considerable labor to move the apparatus. For this reason, it was installed and used in a fixed place, and the price was quite expensive. In addition, the electric start-up assisting machine basically has a structure that raises and lowers the buttocks, and there is a problem that when the user takes a seat, he / she feels uncomfortable or uneasy. Furthermore, in some devices, a structure that tilts the buttocks for a smooth take-off and seating is also adopted, but in such a structure, the buttocks may slip off when leaving after standing up, There was also a problem that the user might feel uneasy.

  An object of the present invention is to provide an electric take-off / seating assistance device that is lightweight and movable, and that can perform a stable take-off / seating operation with a sense of security.

The seating / separation assisting device of the present invention is an electric seating / sitting assisting device that assists the caregiver's seating / seating operation, and includes a base frame that is placed on the floor and a column that is erected on the base frame. Driven by an electric motor, a frame, an elevating guide fixed to the support frame, an elevating frame attached to the elevating guide so as to be movable in the vertical direction, an elevating bar attached to the elevating frame, possess a linear actuator for imparting a driving force for operating the lifting bar in the vertical direction, wherein the base frame is formed in a shape in plan view U, a pair of right and left side frames, distribution between the side lateral frame A vertical frame having a lower end side fixed to the connection frame, and a vertical frame fixed to the both ends of the connection frame. Comprising a horizontal frame fixed to the upper end side of the straight frame, wherein the lifting guide is provided in a pair on the horizontal frame, the lifting bar is characterized in that respectively attached to the upper end of the lift frame.

  The sitting / separating assisting device of the present invention assists a caregiver's sitting / sitting operation, that is, an operation when the cared person stands up from a chair or the like or sits on a chair or the like. In the present invention, the support frame is erected on the base frame, the lifting guide is fixed to the support frame, and the lifting frame is attached to the lifting guide so as to be movable in the vertical direction. A lift bar is attached to the lift frame, and the lift bar is operated in the vertical direction by a linear actuator driven by an electric motor. For example, when a cared person stands up from a chair or the like, the body is supported so that the lifting bar is received by both hands, both arms, both elbows, etc., and the apparatus is operated in the standing direction. When the linear actuator is activated, the elevating bar rises together with the elevating frame. When the elevating frame is raised, the upper body of the cared person who supported the body is lifted up so as to receive the elevating bar with both hands, both arms, both elbows, etc., and is in an upright state.

  In the separation / seating assistance device, the linear actuator may be disposed between the support frame and the lifting bar, and the lifting frame and the lifting bar are provided with a grip that can be grasped by the care recipient, An operation switch of the separation / seating assistance device may be disposed on the grip. Moreover, you may provide the raising / lowering rail part formed so that the said raising / lowering frame could move up and down along the said raising / lowering guide by the fitting structure between the said raising / lowering guide and the said raising / lowering frame. Further, the support frame, the elevating frame, the elevating bar, and the linear actuator may be provided in a pair on the left and right sides so as to be arranged on the left and right sides of the care recipient. In addition, about movable parts, such as a raising / lowering flame | frame, it is good also as a structure which provides a cover and does not pinch a part of a cared person or a caregiver's body. In addition, a structure that prevents pinching by providing a sensor that detects pressure on the lowermost surface of the movable part is also possible.

In addition, the elevating frame may be provided inside each of the pair of elevating guides. In addition to the structure in which the elevating frame is directly moved up and down, the actuator can cope with a change in elevating height and an increase in the rated weight by sandwiching a link structure in the middle.

On the other hand, allow use the release seat assist device as walker for assisting a walking motion of the care person to aid rising operation, in the base frame, and movable該離seating aid in the floor A caster may be attached, and the caster may be provided with a lock mechanism for restricting the movement of the seating aid device.

According to the present invention, the lifting / lowering bar that is lifted / lowered by the linear actuator is configured to lift the care recipient while holding the armpits and arms instead of the buttocks. Anxiety is resolved, and a stable and stable seating operation with a sense of security becomes possible. In addition, it is easy to move because of its light weight, and can be used on chairs and sofas that are used in the past.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the whole structure of the seating / sitting assistance apparatus which is Embodiment 1 of this invention. It is explanatory drawing which shows the structure which looked at the separation / seat assistance apparatus of FIG. 1 from the side surface direction, (a) is a seating state, (b) has each shown the state of the separation / seat assistance apparatus in a standing state. It is sectional drawing along the AA line of FIG. It is a block diagram which shows the structure of the control system of a linear actuator. It is explanatory drawing which shows the auxiliary | assistant operation | movement in the separation / seating assistance apparatus of FIG. It is explanatory drawing which shows the auxiliary | assistant operation | movement in the seating / sitting assistance apparatus which is Embodiment 2 of this invention.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing the overall configuration of a seating / seating assisting device 1 according to Embodiment 1 of the present invention, and FIG. a) shows the seating state, and (b) shows the state of the seating assistance device 1 in the standing state. The seating assistance device 1 is used when a cared person stands up (makes up) from a chair or the like, and is placed on a floor surface by a U-shaped base frame 2 in plan view. The base frame 2 is formed of a metal flat plate and includes a pair of left and right side frames 2a and a connection frame 2b disposed between the side frames 2a. Casters 3 with a lock mechanism are attached to the four corners of the base frame 2. While the caster 3 can freely move on the floor surface by the caster 3, it can also be stopped at a desired position by a lock mechanism.

  The base frame 2 is provided with a support frame 4 formed in an L shape. The separation / seating assistance device 1 basically has a left-right symmetric structure, and the support frame 4 is symmetrically attached to both ends of the connection frame 2b. The support frame 4 is composed of a vertical frame 4a and a horizontal frame 4b, and is fixed on the base frame 2 with the L-shape turned upside down. A pair of elevating guides 5 (5a, 5b) is erected on the horizontal frame 4b. An elevating frame 6 (6a, 6b) is attached inside the elevating guide 5 so as to be movable in the vertical direction. A grip 7 is attached to the lifting frame 6a. An operation switch 8 is attached to the tip of the grip 7 for turning on / off of the seating assistance device 1 and switching between vertical movements. The operation switch 8 is attached to both the left and right grips 7. A lift bar 9 is attached to the upper end of the lift frame 6 so as to connect the left and right lift frames 6a and 6b. Further, the grip 7 may be attached to the elevating bar 9, and the direction thereof can be appropriately changed according to the application. Further, the operation switch 8 may be separately provided at a position that is considered to be operated by the caregiver.

  3 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 3, a lifting rail portion 11 is provided between the lifting guide 5 and the lifting frame 6. The elevating rail portion 11 includes a fitting groove 12 formed in the elevating guide 5 and a fitting convex portion 13 protruding from the side of the elevating frame 6. The fitting groove 12 extends along the vertical direction so that the inner side (the lifting frame 6 side) is open. The fitting convex portion 13 also extends in the vertical direction and is slidably mounted in the fitting groove 12. In addition, the uneven | corrugated relationship of the fitting groove | channel 12 and the fitting convex part 13 may be reverse to FIG.

  Linear actuators 14 (14a, 14b) are attached between the horizontal frame 4b and the lifting bar 9. As the linear actuator 14, a so-called electric feed screw type linear actuator as in Patent Document 3 is used. In an electric feed screw type linear actuator, a shaft provided with a male screw portion is rotationally driven by an electric motor, and a female screw member screwed to the shaft is driven along the shaft. A telescopic rod 15 is attached to the female screw member, and the telescopic rod 15 expands and contracts in the axial direction as the electric motor rotates. The lower end side of the linear actuator 14 is rotatably attached by a pin 17 to an actuator mounting bracket 16 fixed to the horizontal frame 4b. Further, the upper end side of the telescopic rod 15 is also rotatably attached to the lift bar 9 by a pin 18.

  FIG. 4 is a block diagram showing the configuration of the control system of the linear actuator 14. The linear actuator 14 is controlled by a controller 21 housed in the control box 19. The linear actuator 14 is provided with a sensor 22 (for example, a potentiometer for detecting the rotation angle of the electric motor or the shaft) that detects the operation amount of the telescopic rod 15, and the controller 21 controls the left and right linear actuators 14a and 14b. The operating amount of each telescopic rod 15 is acquired from the sensor 22. As the sensor 22, for example, a potentiometer is used. In this case, the operation amount of the telescopic rod 15 is detected by detecting the rotation angle of the electric motor or the shaft.

  A CPU 23 is mounted on the controller 21, and signals are input to the CPU 23 from the operation switch 8 and the sensor 22. In the CPU 23, first, an operation direction switching unit 24 that switches the operation direction of the linear actuator 14 based on a signal from the operation switch 8 is provided. Further, the CPU 23 is provided with a comparator 25 that compares signals from the sensors 22 of the linear actuators 14a and 14b, and an actuator synchronization unit 26 that synchronizes the operations of the linear actuators 14a and 14b based on the comparison result of the comparator 25. Yes. In addition, the CPU 23 is provided with a motor drive control unit 27 that drives and controls the electric motor based on instructions from the operation direction switching unit 24 and the actuator synchronization unit 26. On the other hand, the controller 21 is further provided with a ROM 28 that stores control operation data in the CPU 23 and a RAM 29 that temporarily stores various data such as the operation state of the linear actuator 14. In the seating assistance device 1, a rechargeable battery is mounted as a power source, which eliminates the trouble of connecting and handling the AC power cord and storing it.

  In such a seating / sitting assistance device 1, the standing-up operation is assisted as follows. FIG. 5 is an explanatory diagram showing an assisting operation in the seating / sitting assisting device 1. In addition, although an example of standing-up operation assistance of the care receiver 10 in the separation / seating assistance device 1 is described here, similar operation assistance is possible in the sitting operation (operation opposite to the above: FIG. 5B). → (a)). When the cared person 10 stands up from the chair 30, as shown in FIG. 5A, the lift bar 9 is held on both sides and the grip 7 is held. Next, the operation switch 8 at the front end of the grip 7 is operated to operate the seating / seating assisting device 1 in the standing direction. When the operation switch 8 is turned on and operated in the standing direction, the electric motor is driven by the CPU 23 and the linear actuator 14 is activated. When the linear actuator 14 is actuated, the telescopic rod 15 extends in the axial direction, and the elevating bar 9 is raised together with the elevating frame 6. The linear actuator 14 includes a reverse rotation prevention mechanism, and has a structure in which the linear actuator 14 does not reverse even when a load four times the rated body weight is received, and the position stopped by the operation switch is maintained.

  The operation of the lifting frame 6 is always monitored by the CPU 23 in the form of the amount of expansion / contraction of the telescopic rod 15, and the left and right lifting frames 6 are raised in a synchronized state. When the elevating frame 6 is raised, the upper body of the cared person 10 supported by the elevating bar 9 is lifted, and the standing state as shown in FIG. At this time, since the upper body of the cared person 10 moves with both sides and arms held, there is no fear of raising and lowering the buttocks, and the take-off and sitting operation is assisted in a stable manner. In this case, the rising amount of the lifting frame 6 can be set as appropriate according to the physique of the care recipient 10, and the operation of the lifting frame 6 can also be stopped at any time by operating the operation switch 8. It should be noted that the left and right operation switches 8 are set so that the operation performed first is given priority.

  In this way, the seating assistance device 1 assists the standing motion of the cared person 10, but the seating assistance device 1 also functions as a walking car. As described above, the caster 3 with a lock mechanism is attached to the seating aid 1. Therefore, by performing the standing assistance while the caster 3 is locked and releasing the lock after the standing, the cared person 10 can move as it is supported by the seating assistance device 1. Moreover, the direction of the care recipient 10 can be easily changed instead of walking, and it is possible to assist operations such as getting up from a chair or bed and transferring to a wheelchair. That is, the seating / separating assistance device 1 has not only a standing assistance but also a walker function and a transfer machine function, and one device can assist the three operations of standing, sitting and moving. Therefore, assistance for various situations in daily life, such as “bed toilet seat / wheelchair / chair / sofa”, “toilet seat chair / chair / sofa”, “wheelchair chair / sofa”, etc. Can be performed by one apparatus.

  Further, in the sitting / seating assisting device 1, the care receiver 10 can control the operation of the device with his / her own intention by holding the grip 7 during the lifting / lowering operation and operating the switch 8. In addition, it is not a structure that raises and lowers the buttocks, and because it moves up the side as in normal assistance, there is no anxiety that you may be thrown out of the seat when you take off and on, or you do not feel uncomfortable in the buttocks This makes it possible to perform stable seating operations with a sense of security. Moreover, since the caster can be attached with a lightweight structure, it is easy to move, can be used for a chair or a sofa currently used, and can be easily introduced into a private home. In addition, since the auxiliary mechanism is simple, the price can be controlled at a reasonable price, so widespread use can be expected, and it can meet the needs of relatively minor people with disabilities such as foot and ankle joint diseases and disorders, and back pain. .

(Embodiment 2)
Next, a description will be given of the seating assistance device 31 according to the second embodiment of the present invention. The seating aid device 31 according to the second embodiment is a device that adds a front / rear slide function to the lift bar portion, and thus, it is possible to perform a standing action that is close to nature in the form of standing up while raising the head forward, You can have the independence of standing up, not standing up. In addition, rehabilitation is also conscious, and an early return to society can be expected. In the following embodiment, the same members and parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 6 is an explanatory diagram showing an assisting operation in the seating / separating assisting device 31. As shown in FIG. 6, in the seating aid apparatus 31, the lifting bar 32 is provided in a form that also serves as a grip, and is movable in the front-rear direction (left-right direction in the figure). The slide operation of the elevating bar 32 can be locked and released by the slide button 33. The lifting bar 32 is attached to the upper end of the lifting frame 34. Here, unlike the seating assistance apparatus 1 of FIG. 1, the elevating frame 34 is integrated, and the elevating bar 32 and the elevating frame 34 are configured in a T shape. The elevating frame 34 is attached to the upper end portion of the telescopic rod 15 of the linear actuator 14. The lift bar 32, the linear actuator 14 and the like are provided in a pair of left and right as in the case of the seating assistance device 1.

  When performing a standing-up operation using the separation / seating assistance device 31, first, as shown in FIG. 6A, the elevating bar 32 is slid forward while pressing the slide button 33. After moving the raising / lowering bar 32 forward, both sides are put on the raising / lowering bar 32 as shown in FIG. And the operation switch 8 provided in the raising / lowering bar 32 is operated, and the seating / sitting assistance apparatus 1 is moved to a standing direction. When the operation switch 8 is turned on and operated in the standing direction, the linear actuator 14 is activated, and the elevating frame 6 is raised (FIG. 6C). At this time, the cared person 10 stands up with his head pushed forward, and can stand up in a form close to the normal standing motion of a healthy person.

  Then, the operation of the operation switch 8 is stopped at the desired height, and the lifting bar 32 is stopped (FIG. 6D). Thereafter, the cared person 10 standing up can walk as appropriate (FIG. 6 (e)). In addition, it is also possible to attach a caster to the separation / seating assistance device 31 so that it also serves as a walker. The seating operation is also assisted by the reverse operation described above (FIG. 6 (d) → (a)).

It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
For example, in the above-described embodiment, the potentiometer has been described as an example of the sensor 22, but the type of the sensor is not limited to this, and the operation speed of the telescopic rod 15 can be detected by detecting the motor rotation speed, such as a magnetic sensor. Other sensors can be used as long as they are appropriate. In addition, in the seating aid devices 1 and 31, the ascending speed of the elevating frame 6 may be changed by the operation of the operation switch 8 or other setting switches. Furthermore, you may provide the raising / lowering bar 9 of the seating assistance apparatus 1 so that sliding is possible back and forth. In that case, the care receiver 10 may be able to change the direction by 90 ° with the lifting bar 9 protruding forward.

DESCRIPTION OF SYMBOLS 1 Separation-and-seat assistance device 2 Base frame 2a Side frame 2b Connection frame 3 Caster 4 Support frame 4a Vertical frame 4b Horizontal frame 5 Lift guide 5a, 5b Lift guide 6 Lift frame 6a, 6b Lift frame 7 Grip 8 Operation switch 9 Lift bar DESCRIPTION OF SYMBOLS 10 Care recipient 11 Elevating rail part 12 Fitting groove 13 Fitting convex part 14 Linear actuator 14a, 14b Linear actuator 15 Telescopic rod 16 Actuator mounting bracket 17 Pin 18 Pin 19 Control box 21 Controller 22 Sensor 23 CPU
24 Operation direction switching unit 25 Comparator 26 Actuator synchronization unit 27 Motor drive control unit 28 ROM
29 RAM
30 Chair 31 Seating / Attaching Seat Auxiliary Device 32 Lift Bar 33 Slide Button 34 Lift Frame

Claims (8)

An electric sitting / separating assisting device for assisting the caregiver's sitting / sitting operation,
A base frame placed on the floor;
A support frame erected on the base frame;
A lifting guide fixed to the support frame;
A lifting frame attached to the lifting guide so as to be vertically movable;
A lifting bar attached to the lifting frame;
Is driven by an electric motor, have a, a linear actuator for imparting a driving force for actuating the lifting bar in the vertical direction,
The base frame is formed in a U shape in plan view, and includes a pair of left and right side frames, and a connection frame disposed between the side frames,
The support frame is provided with a vertical frame standing on both ends of the connection frame and having a lower end fixed to the connection frame, and a horizontal frame fixed to the upper end of the vertical frame,
A pair of the lifting guides are provided on the horizontal frame,
The lifting / lowering bar is attached to an upper end of the lifting / lowering frame, respectively . The seating assistance device according to claim 1,
The linear seating auxiliary device according to claim 1, wherein the linear actuator is disposed between the support frame and the lift bar. In the take-off seat assistance apparatus of Claim 1 or 2,
The lifting frame has a grip that can be grasped by the care recipient,
An operation device for the seating / seating assist device is disposed on the grip. In the taking-off and seating assistance apparatus of any one of Claims 1-3,
A lifting / lowering seat assisting device provided between the elevating guide and the elevating frame, wherein the elevating frame includes an elevating rail portion that is movable up and down along the elevating guide by a fitting structure. In the taking-off and seating assistance apparatus of any one of Claims 1-4,
The lifting / lowering support device, wherein the support frame, the lifting frame, the lifting bar, and the linear actuator are provided in a pair on the left and right sides so as to be disposed on the left and right sides with the care recipient interposed therebetween. In the taking-off seat assistance apparatus of any one of Claims 1-5,
The lifting / lowering support apparatus , wherein the lifting frame is provided inside the pair of lifting guides . In the taking-off and seating assistance apparatus of any one of Claims 1-6 ,
The base frame is provided with a caster that enables the separation / seating assistance device to be moved on the floor so that the separation / assistance assistance device can be used as a walker that assists the walking operation of the care recipient who assists the standing-up operation. A seating assistance device comprising: The seating assistance apparatus according to claim 7 ,
The caster has a lock mechanism for restricting movement of the take-off / seating assistance device.

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