JP2020010822A - Care bed - Google Patents

Abstract

To provide a care bed capable of preventing a hand or a leg or the like of a cared person from falling out of a care bed when a floor part is inclined.SOLUTION: A care bed 10 includes a main bed 11, a right sub-bed 12, a left sub-bed 13, and a base 14. A first forward rotation mechanism 36A, a first backward rotation mechanism 36B, and a second forward rotation mechanism 37A, a second backward rotation mechanism 37B are driven, so as to pull first and second center wires 45a, 55a. When first and second right wires 45b, 55b and first and second left wires 45c, 55c are loosened, the main bed 11 is rotated with a shaft 30 of a left side hinge 25 as a rotation center. Then, the right sub-bed 12 is rotated upward to a right inclination position by energization of a right leaf spring 33, and the left sub-bed 13 is rotated upward to a left inclination position by energization of a left leaf spring 34.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a nursing bed.

  In recent years, a nursing bed for easily nursing a care recipient lying on the floor, for example, a nursing bed for changing the posture of a care recipient lying on the bed has been known. (For example, see Patent Document 1).

  The bed for care described in Patent Literature 1 (bed apparatus with a floor tilting mechanism) includes a tilting mechanism for tilting a floor on which a care recipient can lie, and when the floor is tilted by the tilting mechanism, the floor is tilted. Simultaneously with the inclination of the part, the lower floor part, which is the lower part of the floor part, is bent. Even if the floor is inclined, the care-requiring person is received by the bent lower floor so that the care-requiring person does not fall off the nursing bed.

Japanese Utility Model Publication No. 7-018720

  In the nursing bed described in Patent Literature 1, the upper portion of the floor is flat and continuous with the floor, so that the hands and legs of the care recipient need pop out of the nursing bed. Was a problem.

  In view of the above, it is an object of the present invention to provide a nursing bed that can prevent hands and legs of a care recipient from jumping out of the nursing bed when the floor is inclined. .

  The nursing bed of the present invention is rotatably connected to a main floor portion on which a care-requiring person can lie in a first direction, and one side end of the main floor portion in a second direction orthogonal to the first direction, A first sub-floor portion rotatable between a first reference position parallel to the main floor portion and a first inclined position inclined upward with respect to the main floor portion, and the main floor portion in the second direction. A second sub-floor portion rotatably connected to the other end side and rotatable between a second reference position parallel to the main floor portion and a second inclined position inclined upward with respect to the main floor portion; A main floor tilt mechanism for rotating and tilting the main floor about an axis extending in the first direction about a rotation center, and rotating the first sub floor from the first reference position to the first tilt position. And the second sub-floor is rotated from the second reference position to the second tilt position to incline the sub-floor. And a main-floor tilting mechanism, wherein the main-floor tilting mechanism is wound by a main-floor motor and forward rotation of the main-floor motor, and loosened by reverse rotation of the main-floor motor. Arm for projecting from the lower surface of the main floor portion and engaging with the main floor portion wire, displacing upward in response to winding of the main floor portion wire, and inclining the main floor portion. And the following. It is preferable that the first sub-floor and the second sub-floor are inclined in conjunction with the inclination of the main floor. Also, two main floor tilt mechanisms are provided, and the first main floor tilt mechanism rotates in the forward direction (for example, clockwise) around the axis extending in the first direction as the center of rotation, and the second main floor tilt mechanism. It is preferable that the tilt mechanism rotates in the opposite direction (for example, counterclockwise) about the axis extending in the first direction as the center of rotation.

  According to the present invention, since the first sub-floor and the second sub-floor can be inclined, even when the main floor is inclined, both side surfaces of the main floor are connected to the first sub-floor and the second sub-floor. It can be covered with the sub-floor part, and the hands and legs of the care-requiring person can be reliably prevented from jumping out from both sides of the inclined main floor part.

  Further, it is preferable that the arm protrudes from a lower surface of the main floor and is provided to be inclined in the second direction. When two main floor tilt mechanisms are provided, the arm of the first main floor tilt mechanism and the arm of the second main floor tilt mechanism are tilted in the opposite direction in the second direction. Is preferred.

  According to this configuration, by simply driving the main floor motor and winding the main floor wire, the arm is displaced upward to incline the main floor in a direction corresponding to the tilt direction of the arm. Therefore, the main floor can be inclined in a desired direction with a simple configuration.

  Further, the sub-floor tilt mechanism includes a first biasing member that biases the first sub-floor toward the first tilt position, and a first biasing member that biases the second sub-floor toward the second tilt position. A second urging member for urging, a first sub-floor motor, one end fixed to the first sub-floor part, and the other end fixed to the first sub-floor motor; A first sub-floor section for pulling the first sub-floor section toward the first reference position against the urging of the first urging member when the first sub-floor section is wound by rotation of the sub-floor section motor; A wire, a second sub floor motor, and one end fixed to the second sub floor, and the other end fixed to the second sub floor motor, and rotation of the second sub floor motor A second sub-floor wire that pulls the second sub-floor portion toward the second reference position against the bias of the second biasing member when the second sub-floor portion is wound up, The first urging member and the first urging member are driven by driving the first sub floor motor and the second sub floor motor so as to loosen the first sub floor wire and the second sub floor wire. The second urging member inclines the first sub-floor from the first reference position to the first inclined position, and inclines the second sub-floor from the second reference position to the second inclined position. Is preferred.

  According to this configuration, the first urging is performed only by driving the first sub-floor motor and the second sub-floor motor so as to loosen the first sub-floor wire and the second sub-floor wire. Since the first sub-floor and the second sub-floor can be inclined by the member and the second urging member, the first sub-floor and the second sub-floor can be inclined with a simple configuration.

The front view which shows typically the bed for care of an embodiment of this invention. The perspective view which shows a bed for care. The perspective view which decomposes and shows a care bed. Sectional drawing which shows the part of a 2nd rotation mechanism. The front view which shows the bed for care of a 1st inclination state. The front view which shows the bed for care of a 2nd inclination state.

  An embodiment of the care bed of the present invention will be described with reference to the drawings.

  As shown in FIG. 1 to FIG. 3, the nursing care bed 10 of the present embodiment includes a main bed 11 (main floor portion) in which a care recipient P1 can lie in a first direction D1 which is a longitudinal direction (front-back direction). A right sub-bed 12 (first sub-floor) rotatably connected to a right end (one end) of a second direction D2 (a direction orthogonal to the first direction D1), which is a short direction (left-right direction) of the main bed 11. ), A left sub-bed 13 (second sub-floor) rotatably connected to the left end side (the other end side) of the main bed 11, and a base 14. Two legs 16 are provided on the lower surface of the base 14.

  A first tilt button 17a, a second tilt button 17b, and a reference position return button 17c that can be operated by a caregiver are provided on the left side surface of the left leg portion 16. Each of the buttons 17a to 17c is connected to a control device 18 that controls driving of the nursing bed 10. The control device 18 includes, for example, a CPU and a memory.

  The right sub-bed 12 is rotatably provided between a right reference position parallel to the main bed 11 (see FIGS. 1 and 2) and a right inclined position inclined upward with respect to the main bed 11 (see FIG. 5). Have been.

  The left subbed 13 is rotatably provided between a left reference position parallel to the main bed 11 (see FIGS. 1 and 2) and a left inclined position inclined upward with respect to the main bed 11 (see FIG. 5). Have been.

  The main bed 11 has a main reference position parallel to the base 14 (see FIGS. 1 and 2), a main first inclined position rotated counterclockwise in FIG. 1 from the main reference position (see FIG. 5), It is rotatably provided between a reference position and a main second reference position (see FIG. 6) rotated clockwise in FIG. In FIG. 1 and the like, there is a gap between each of the beds 11 to 13 and the base 14, but this is for the purpose of making the boundary between each of the beds 11 to 13 and the base 14 easy to understand. There is no.

  The main bed 11 is provided with a first arm 21 for rotating the main bed 11 to the main first inclined position and a second arm 22 for rotating the main bed 11 to the main second inclined position. . Notches 14a (see FIG. 3) are formed in the base 14 at the front and rear so that the first and second arms 21 and 22 can rotate.

  The first arm 21 is formed so as to incline leftward toward the lower end, and the second arm 22 is formed so as to incline rightward toward the lower end.

  At the lower end of the first arm 21, a first wire receiving portion 21a is provided. At the lower end of the second arm 22, a second wire receiving portion 22a is provided. Each of the first arm 21 and the second arm 22 is provided on the front side and the rear side (see FIG. 2), each of which is two in total. 2 and 3, illustration of the first wire receiving portion 21a and the second wire receiving portion 22a is omitted.

  The right subbed 12 and the left subbed 13 are rotatably connected to the main bed 11 by hinges 25. The hinge 25 includes a shaft 30, a first rotating plate 31, and a second rotating plate 32.

  The shaft 30 includes a first shaft portion 30a inserted through the first cylindrical portion 31a of the first rotary plate 31 and a second shaft portion 30b inserted through the second cylindrical portion 32a of the second rotary plate 32.

  The first rotary plate 31 is composed of a first cylindrical portion 31a into which the first shaft portion 30a of the shaft 30 is inserted, and a first plate portion 31b, and is provided rotatably around the central axis of the shaft 30 as a rotation center. ing.

  The second rotating plate 32 includes a second cylindrical portion 32a into which the second shaft portion 30b of the shaft 30 is inserted, and a second plate portion 32b, and is provided rotatably around the central axis of the shaft 30 as a rotation center. ing.

  The shaft 30 includes a central shaft portion 30c sandwiched between the first cylindrical portion 31a and the second cylindrical portion 32a. The central shaft portion 30c has an insertion portion 30d that is removably inserted into the base 14. ing. The tip of the insertion portion 30d is formed to be sharp at an acute angle.

  Four hinges 25 are provided, the right subbed 12 is rotatably connected to the main bed 11 by the two hinges 25, and the left subbed 13 is rotatably connected to the main bed 11 by the two hinges 25. . The number of hinges 25 can be changed as appropriate.

  The hinge 25 connecting the right sub-bed 12 to the main bed 11 is such that the first plate portion 31b of the first rotating plate 31 is fixed to the right sub-bed 12, and the second plate portion 32b of the second rotating plate 32 is fixed to the main bed 11. Have been.

  The hinge 25 connecting the left sub-bed 13 to the main bed 11 is such that the first plate portion 31b of the first rotating plate 31 is fixed to the main bed 11, and the second plate portion 32b of the second rotating plate 32 is fixed to the left sub-bed 13. Have been.

  The insertion portions 30d of the four hinges 25 are detachably inserted into four mounting holes 14b (see FIG. 3) formed in the base 14, and the main bed 11, the right sub-bed 12, and the left sub-bed 13 It is rotatably mounted on.

  The nursing care bed 10 includes a right leaf spring 33 for urging the right sub-bed 12 toward the right tilt position (see FIG. 5) and a left leaf for urging the left sub-bed 13 toward the left tilt position (see FIG. 5). A leaf spring 34 is provided.

  One end 33a of the right leaf spring 33 is fixed to the right end of the main bed by, for example, a screw, and the other end 33b is slidably attached to the right subbed 12. A concave portion 12a is formed in the right subbed 12, and a shaft portion 33c provided at the other end 33b of the right leaf spring 33 is slidably inserted into the concave portion 12a. The right leaf spring 33 has a reference shape in a state where the right sub-bed 12 is located at the right inclined position (see FIG. 5), and has an elastic deformation force for returning to the reference shape.

  Two right leaf springs 33 are provided and fixed to the front and rear surfaces of the main bed 11, and the right sub-bed 12 has concave portions 12a formed on the front and rear surfaces. The illustration of the concave portion 12a on the rear surface is omitted.

  Similarly, the left leaf spring 34 has one end 34 a fixed to the left end of the main bed by, for example, a screw, and the other end 34 b slidably attached to the left sub-bed 13. A concave portion 13a is formed in the left subbed 13, and a shaft portion 34c provided at the other end 34b of the left leaf spring 34 is slidably inserted into the concave portion 13a. The left leaf spring 34 has a reference shape in a state where the left subbed 13 is located at the left inclined position (see FIG. 5), and has an elastic deformation force for returning to the reference shape.

  Two left leaf springs 34 are provided and fixed to the front and rear surfaces of the main bed 11, and the left sub-bed 13 has concave portions 13a formed on the front and rear surfaces. The illustration of the concave portion 13a on the rear surface is omitted.

  The care bed 10 rotates the main bed 11 counterclockwise in FIG. 1, rotates the right sub-bed 12 to the right reference position against the bias of the right leaf spring 33, and rotates the left sub-bed 13 to the left A first front rotation mechanism 36A and a first rear rotation mechanism 36B that rotate to the left reference position against the bias of the spring 34 are provided. The first front rotation mechanism 36A is provided on the front side of the nursing bed 10, and the first rear rotation mechanism 36B is provided on the rear side of the nursing bed 10.

  The care bed 10 rotates the main bed 11 clockwise in FIG. 1, rotates the right subbed 12 to the right reference position against the bias of the right leaf spring 33, and rotates the left subbed 13 to the left leaf spring. A second front rotation mechanism 37A and a second rear rotation mechanism 37B that rotate to the left reference position against the urging of the first rotation mechanism 34; The second front rotation mechanism 37A is provided on the front side of the nursing bed 10, and the second rear rotation mechanism 37B is provided on the rear side of the nursing bed 10.

  In the present embodiment, the first front rotation mechanism 36A, the second front rotation mechanism 37A, the second rear rotation mechanism 37B, and the first rear rotation mechanism 36B are provided in this order from the front.

  The first front rotation mechanism 36A includes a first right motor 41, a first right pulley 42 including a two-stage pulley attached to a rotation shaft of the first right motor 41, a first left motor 43, and a first left motor. A first left pulley 44 composed of a two-stage pulley attached to the rotation shaft 43, a first center wire 45a, a first right wire 45b, and a first left wire 45c are provided. The driving of the first right motor 41 and the first left motor 43 is controlled by the control device 18. The first right motor 41 and the first left motor 43 are fixed to the base 14 by, for example, screws.

  The first rear rotation mechanism 36B is configured similarly to the first front rotation mechanism 36A, and includes a first right motor 41, a first right pulley 42, a first left motor 43, a first left pulley 44, and each wire. 45a to 45c. 2 and 3, illustration of the first right motor 41, the first right pulley 42, the first left motor 43, the first left pulley 44, and the wires 45a to 45c is omitted.

  On the right side of the right subbed 12, a substantially pulley-shaped right wire receiving portion 12b is provided, and on the right side of the base 14, a substantially pulley-shaped right base wire receiving portion 14c is provided. A total of four right wire receiving portions 12b are provided at the front end side and two at the rear end side. Four right base wire receiving portions 14c are provided, two on the front end side and two on the rear end side.

  On the left side surface of the left subbed 13, a substantially pulley-shaped left wire receiving portion 13b is provided, and on the left side surface of the base 14, a substantially pulley-shaped left base wire receiving portion 14d is provided. A total of four left wire receiving portions 13b are provided, two on the front end side and two on the rear end side. Four left base wire receiving portions 14d are provided, two on the front end side and two on the rear end side. 2 and 3, the illustration of the left wire receiving portion 13b is omitted.

  In the first front rotation mechanism 36A, one end of the first center wire 45a is fixed to the first stage of the first right pulley 42, and the other end of the first center wire 45a is fixed to the first right pulley 42 via the first wire receiving portion 21a of the first arm 21. It is fixed to the first stage of the left pulley 44. This configuration is the same for the first front rotation mechanism 36A on the front side and the first rear rotation mechanism 36B on the rear side.

  In the first front rotation mechanism 36A, one end of the first right wire 45b is fixed to the most front right wire receiving portion 12b of the four right wire receiving portions 12b, and the first right wire 45b is connected to the four right base wire receiving portions 14c. The other end is fixed to the second stage of the first right pulley 42 via the frontmost right base wire receiving portion 14c.

  In the first front rotation mechanism 36A, one end of the first left wire 45c is fixed to the foremost left wire receiving portion 13b of the four left wire receiving portions 13b, and the first left wire 45c is connected to the four left base wire receiving portions 14d. The other end is fixed to the second stage of the first left pulley 44 via the foremost left base wire receiving portion 14d.

  In the first rear rotating mechanism 36B, one end of the first right wire 45b is fixed to the rearmost right wire receiving portion 12b of the four right wire receiving portions 12b, and the four right base wire receiving portions 14c are provided. The other end is fixed to the second stage of the first right pulley 42 via the rearmost right base wire receiving portion 14c of the first.

  In the first rear rotation mechanism 36B, one end of the first left wire 45c is fixed to the rearmost left wire receiving portion 13b of the four left wire receiving portions 13b, and the four left base wire receiving portions 14d The other end is fixed to the second stage of the first left pulley 44 via the rearmost left base wire receiving portion 14d.

  FIG. 4 is a cross-sectional view between the first and second front left base wire receiving portions 14d. As shown in FIG. 4, the second front rotation mechanism 37A includes a second right motor 51, a second right pulley 52 including a two-stage pulley attached to a rotation shaft of the second right motor 51, and a second left motor. 53, a second left pulley 54 composed of a two-stage pulley attached to the rotation shaft of the second left motor 53, a second center wire 55a, a second right wire 55b, and a second left wire 55c. The driving of the second right motor 51 and the second left motor 53 is controlled by the control device 18. The second right motor 51 and the second left motor 53 are fixed to the base 14 by, for example, screws.

  The second rear rotation mechanism 37B is configured similarly to the second front rotation mechanism 37A, and includes a second right motor 51, a second right pulley 52, a second left motor 53, a second left pulley 54, and a wire 55a. To 55c. 2 and 3, illustration of the second right motor 51, the second right pulley 52, the second left motor 53, the second left pulley 54, and the wires 55a to 55c is omitted.

  In the second front rotation mechanism 37A, one end of the second center wire 55a is fixed to the first stage of the second right pulley 52, and the other end is connected to the second center pulley 52a via the second wire receiving portion 22a of the second arm 22. It is fixed to the first stage of the left pulley 54. This configuration is the same for the front second front rotation mechanism 37A and the rear second rear rotation mechanism 37B.

  In the second front rotation mechanism 37A, one end of the second right wire 55b is fixed to the second right wire receiving portion 12b from the front of the four right wire receiving portions 12b, and the four right base wire receiving portions are The other end is fixed to the second stage of the second right pulley 52 via the second right base wire receiving portion 14c from the front of the 14c.

  In the second front rotation mechanism 37A, the second left wire 55c has one end fixed to the second left wire receiving portion 13b from the front of the four left wire receiving portions 13b, and the four left base wire receiving portions. The other end is fixed to the second stage of the second left pulley 54 via the second left base wire receiving portion 14d from the front of the 14d.

  In the second rear rotation mechanism 37B, one end of the second right wire 55b is fixed to the second rear right wire receiving portion 12b of the four right wire receiving portions 12b, and the four right base wire receiving portions The other end is fixed to the second stage of the second right pulley 52 via the second right base wire receiving portion 14c from the rear of the 14c.

  In the second rear rotation mechanism 37B, one end of the second left wire 55c is fixed to the second rearmost left wire receiving portion 13b of the four left wire receiving portions 13b, and the four left base wire receiving portions The other end is fixed to the second stage of the second left pulley 54 via the second left base wire receiving portion 14d from the rear of the 14d.

  In the present embodiment, even when the first right motor 41 and the second right motor 51 are not driven, the state of the right subbed 12 shown in FIG. 1 is maintained. This is because the first right wire 45b and the second right wire 55b are pulled by the elastic deformation force of the right leaf spring 33, and a counterclockwise rotating force is applied to the first right motor 41 and the second right motor 51. Also, the first right motor 41 and the second right motor 51 are held by the first center wire 45a and the second center wire 55a on which the main bed 11 having a certain weight is mounted so as not to rotate counterclockwise. That's why.

  Similarly, even when the first left motor 43 and the second left motor 53 are not driven, the state of the left subbed 13 shown in FIG. 1 is maintained.

[First tilt control]
The operation when the care bed 10 is inclined to change the posture of the care recipient P1 will be described.

  First, the caregiver operates the first tilt button 17a in the state of FIG. When the first tilt button 17a is operated, a first drive signal is transmitted from the first tilt button 17a to the control device 18.

  When the first drive signal is input, the control device 18 controls the first right pulley 42 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B to rotate in the counterclockwise direction in FIG. The first right motor 41 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is driven.

  Further, when the first drive signal is input, the control device 18 causes the first left pulley 44 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B to rotate clockwise in FIG. The first left motor 43 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is driven.

  When the first drive signal is input, the control device 18 controls the second right pulley 52 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B to rotate in the counterclockwise direction in FIG. The second right motor 51 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is driven.

  Further, when the first drive signal is input, the control device 18 causes the second left pulley 54 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B to rotate clockwise in FIG. The second left motor 53 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is driven.

  When the first drive signal is input, the control device 18 controls the first right motor 41 and the first left motor 43 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B, respectively, to the second front rotation mechanism 37A. And the second rear rotation mechanism 37B is driven to rotate at a higher speed than the respective second right motor 51 and second left motor 53.

  As shown in FIG. 5, when the first right pulley 42 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is rotated counterclockwise in FIG. 5, the second stage of the first right pulley 42 is rotated. The first right wires 45b of the first front rotation mechanism 36A and the first rear rotation mechanism 36B that have been wound up are pulled out, and the two first right wires 45b are loosened.

  Similarly, when the second right pulley 52 (see FIG. 4) of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is rotated counterclockwise in FIG. The second right wires 55b of the second front rotation mechanism 37A and the second rear rotation mechanism 37B that have been wound on the eyes are pulled out, and the two second right wires 55b are loosened.

  When the first right wire 45b and the second right wire 55b are loosened, the right sub-bed 12 is rotated to the right tilt position by the elastic deformation force of the right leaf spring 33. When the right subbed 12 rotates to the right tilt position, the right subbed 12 gradually rotates to the right tilt position according to the looseness of the first right wire 45b and the second right wire 55b.

  Similarly, when the first left pulley 44 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is rotated clockwise in FIG. 5, the first left pulley 44 is wound up to the second stage of the first left pulley 44. The first left wires 45c of the first front rotation mechanism 36A and the first rear rotation mechanism 36B are pulled out, and the two first left wires 45c are loosened.

  Similarly, when the second left pulley 54 (see FIG. 4) of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is rotated clockwise in FIG. 4, the second stage of the second left pulley 54 is rotated. The second left wires 55c of the second front rotation mechanism 37A and the second rear rotation mechanism 37B that have been wound up are pulled out, and the two second left wires 55c are loosened.

  When the first left wire 45c and the second left wire 55c are loosened, the left subbed 13 is rotated to the left tilt position by the elastic deformation force of the left leaf spring 34. When the left subbed 13 rotates to the left inclined position, the left subbed 13 gradually rotates to the left inclined position in accordance with the looseness of the first left wire 45c and the second left wire 55c.

  Further, the first right pulley 42 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is rotated counterclockwise in FIG. 5, and the respective first right pulley 42A and first rear rotation mechanism 36B are rotated. When the first left pulley 44 is rotated clockwise in FIG. 5, the first stage of the first right pulley 42 and the first stage of the first left pulley 44 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B. The two first central wires 45a wound around are wound and pulled.

  In addition, the second right pulley 52 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is rotated in the counterclockwise direction in FIG. 4, and the respective second right pulleys 52 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B are rotated. When the second left pulley 54 is rotated clockwise in FIG. 4, the first stage of the second right pulley 52 and the first stage of the second left pulley 54 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B. The two second central wires 55a wound around are wound and pulled.

  The control device 18 controls the first right motor 41 and the first left motor 43 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B, respectively, of the second front rotation mechanism 37A and the second rear rotation mechanism 37B. It is driven to rotate at a higher speed than the second right motor 51 and the second left motor 53. Therefore, the two first central wires 45a are wound at a higher speed than the two second central wires 55a and are pulled first.

  Thereby, a force in the first action direction F1 (see FIG. 1) is applied to the first arm 21 (main bed 11) placed on the first central wire 45a. When a force in the first action direction F1 is applied to the first arm 21 (main bed 11), the first arm 21 (main bed 11) is rotated about the shaft 30 of the left hinge 25 in FIG. Rotate clockwise. In this case, the insertion portion 30d of the right hinge 25 is pulled out from the mounting hole 14b.

  By such an operation, the main bed 11 rotates counterclockwise in FIG. 5 around the shaft 30 of the left hinge 25 as a rotation center, and the right subbed 12 rotates upward to the right tilt position, and the left subbed 12 rotates. 13 rotates upward to the left tilt position (first tilt state). Thus, the posture of the care recipient P1 can be changed.

  Furthermore, in the first inclined state, since the right subbed 12 and the left subbed 13 are inclined upward, it is possible to reliably prevent the hands and legs of the care recipient P1 from jumping out of both sides of the main bed 11. it can.

[Second tilt control]
When the caregiver operates the second tilt button 17b in the state of FIG. 1, a second drive signal is transmitted from the second tilt button 17b to the control device 18.

  When the second drive signal is input, the controller 18 controls the first right motor 41 and the first left motor 41 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B in the same direction as the first bed tilt control. The motor 43 and the second right motor 51 and the second left motor 53 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B are driven. By this drive control, the two first left wires 45c and the two second left wires 55c are loosened, and the two first central wires 45a and the two second central wires 55a are wound and pulled.

  When the second drive signal is input, the control device 18 controls the second right motor 51 and the second left motor 53 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B to the first front rotation mechanism 36A. And the first rear rotation mechanism 36B is driven to rotate at a higher speed than the respective first right motor 41 and first left motor 43. Therefore, the two second central wires 55a are wound at a higher speed than the two first central wires 45a and are pulled first.

  Thereby, a force in the second action direction F2 (see FIG. 1) is applied to the second arm 22 (main bed 11) placed on the second central wire 55a. When a force in the second action direction F2 is applied to the second arm 22 (main bed 11), the second arm 22 (main bed 11) rotates around the shaft 30 of the right hinge 25 as a clock in FIG. Rotate in the direction. In this case, the insertion portion 30d of the left hinge 25 is pulled out from the mounting hole 14b.

  By such an operation, the main bed 11 rotates clockwise in FIG. 6 around the shaft 30 of the right hinge 25, and the right subbed 12 rotates to the right tilt position, and the left subbed 13 moves to the left. Rotate to the inclined position (second inclined state). Thus, the posture of the care recipient P1 can be changed.

  Further, in the second inclined state, since the right sub-bed 12 and the left sub-bed 13 are inclined upward, it is possible to reliably prevent the hands and legs of the care recipient P1 from jumping out from both sides of the main bed 11. it can.

[Reference position return control from first tilt state]
When the caregiver operates the reference position return button 17c while the care bed 10 is in the first inclined state (see FIG. 5), a stop signal is transmitted from the reference position return button 17c to the control device 18. When the stop signal is input in the first tilt state, the control device 18 causes the first right pulleys 42 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B to rotate clockwise in FIG. The first right motor 41 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is driven.

  Further, when the stop signal is input in the first inclined state, the control device 18 causes the second right pulleys 52 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B to rotate clockwise in FIG. Thus, the second right motor 51 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is driven.

  By the driving of the first right motor 41, the two first center wires 45a wound on the first stage of the first right pulley 42 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B. Is pulled out, and the two first central wires 45a are loosened.

  Similarly, by the driving of the second right motor 51 described above, the two second right pulleys 52 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B are wound on the first stage. The center wire 55a is pulled out, and the two second center wires 55a are loosened.

  In addition, the first right wire 45b of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is wound around the second stage of the first right pulley 42 by the driving of the first right motor 41 described above. Pulled.

  Similarly, the second right wire 55b of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is wound to the second stage of the second right pulley 52 by the driving of the second right motor 51 described above. Pulled.

  When the first right wire 45b and the second right wire 55b are wound and pulled, the main bed 11 is rotated from the position shown in FIG. 5 toward the main reference position shown in FIG. At this time, the insertion portion 30d of the right hinge 25 that has been removed from the mounting hole 14b is inserted into the mounting hole 14b.

  When the main bed 11 is rotated from the position shown in FIG. 5 to a position near the main reference position shown in FIG. 1, the left sub-bed 13 is held at the position shown in FIG. Therefore, the angle between the main bed 11 and the left sub-bed 13 increases (for example, the angle changes from 100 ° to 145 °).

  When the first right wire 45b and the second right wire 55b are further wound and pulled after the main bed 11 has been rotated to near the main reference position, the first right wire 45b and the second right wire 55b resist the elastic deformation force of the right leaf spring 33, The right subbed 12 is rotated to the right reference position. When the right subbed 12 rotates to the right reference position, the right subbed 12 gradually rotates to the right reference position in accordance with the tension of the first right wire 45b and the second right wire 55b.

  Further, when the main bed 11 is rotated to near the main reference position, the control device 18 moves the first left pulley 44 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B counterclockwise in FIG. The first left motor 43 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is driven so as to rotate.

  Further, when the main bed 11 is rotated to near the main reference position, the control device 18 moves the second left pulleys 54 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B in the counterclockwise direction in FIG. The second left motor 53 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is driven so as to rotate.

  By the driving of the first left motor 43, the first left wire 45c of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is wound and pulled to the second stage of the first left pulley 44. .

  Similarly, by driving the second left motor 53 described above, the second left wires 55c of the second front rotation mechanism 37A and the second rear rotation mechanism 37B are wound on the second stage of the second left pulley 54. Pulled.

  When the first left wire 45c and the second left wire 55c are wound and pulled, the left subbed 13 is rotated to the left reference position against the elastic deformation force of the left leaf spring 34. Thereby, the two first central wires 45a and the two second central wires 55a are further loosened, and the nursing care bed 10 is brought into the state shown in FIG. 1 with the main bed 11 rotated to the main reference position. When the left subbed 13 rotates to the left reference position, the left subbed 13 gradually rotates to the left reference position in accordance with the tension of the first left wire 45c and the second left wire 55c.

[Reference position return control from second tilt state]
When the caregiver operates the reference position return button 17c while the care bed 10 is in the second inclined state (see FIG. 6), a stop signal is transmitted from the reference position return button 17c to the control device 18. When the stop signal is input in the second tilt state, the control device 18 causes the first left pulleys 44 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B to rotate in the counterclockwise direction in FIG. Then, the first left motor 43 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B is driven.

  Further, when a stop signal is input in the second tilt state, the control device 18 rotates the second left pulley 54 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B counterclockwise in FIG. Then, the second left motor 53 of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is driven.

  By driving the first left motor 43, the two first central wires 45a wound on the first stage of the first left pulley 44 of each of the first front rotation mechanism 36A and the first rear rotation mechanism 36B. Is pulled out, and the two first central wires 45a are loosened.

  Similarly, by driving the second left motor 53, the two second left pulleys 54 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B are wound around the first stage of the second left pulley 54, respectively. The center wire 55a is pulled out, and the two second center wires 55a are loosened.

  Further, the first left motor 45 drives the first left wire 45c of the first front rotation mechanism 36A and the first rear rotation mechanism 36B to the second stage of the first left pulley 44, respectively. Pulled.

  Similarly, by driving the second left motor 53 described above, the second left wires 55c of the second front rotation mechanism 37A and the second rear rotation mechanism 37B are wound on the second stage of the second left pulley 54. Pulled.

  When the first left wire 45c and the second left wire 55c are wound and pulled, the main bed 11 is rotated from the position shown in FIG. 6 to the main reference position shown in FIG. At this time, the insertion portion 30d of the left hinge 25 that has been removed from the mounting hole 14b is inserted into the mounting hole 14b.

  When the main bed 11 is rotated from the position shown in FIG. 6 to a position near the main reference position shown in FIG. 1, the right sub-bed 12 is held at the position shown in FIG. Therefore, the angle between the main bed 11 and the right sub-bed 12 increases (for example, changes from 100 ° to 145 °).

  After the main bed 11 is rotated to near the main reference position, when the first left wire 45c and the second left wire 55c are further wound up and pulled, the elastic force of the left leaf spring 34 is resisted. The left subbed 13 is rotated to the left reference position. When the left subbed 13 rotates to the right reference position, the left subbed 13 gradually rotates to the left reference position in accordance with the tension of the first left wire 45c and the second left wire 55c.

  Further, when the main bed 11 is rotated to near the main reference position, the control device 18 causes the first right pulleys 42 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B to rotate clockwise in FIG. The first right motors 41 of the first front rotation mechanism 36A and the first rear rotation mechanism 36B are driven to rotate.

  Further, when the main bed 11 is rotated to near the main reference position, the control device 18 moves the second right pulleys 52 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B clockwise in FIG. The second right motors 51 of the second front rotation mechanism 37A and the second rear rotation mechanism 37B are driven to rotate.

  By the driving of the first right motor 41, the first right wires 45b of the first front rotation mechanism 36A and the first rear rotation mechanism 36B are wound and pulled to the second stage of the first right pulley 42. .

  Similarly, the second right wire 55b of each of the second front rotation mechanism 37A and the second rear rotation mechanism 37B is wound to the second stage of the second right pulley 52 by the driving of the second right motor 51 described above. Pulled.

  When the first right wire 45b and the second right wire 55b are wound and pulled, the right subbed 12 is rotated to the right reference position against the elastic deformation force of the right leaf spring 33. Thereby, the two first central wires 45a and the two second central wires 55a are further loosened, and the nursing care bed 10 is brought into the state shown in FIG. 1 with the main bed 11 rotated to the main reference position. When the right subbed 12 rotates to the left reference position, the right subbed 12 gradually rotates to the right reference position in accordance with the tension of the first right wire 45b and the second right wire 55b.

  As described above, when returning from the state shown in FIG. 5 or FIG. 6 to the state shown in FIG. 1, the nursing bed 10 rotates the main bed 11 near the main reference position before the right sub-bed 12 and the left sub-bed 13 rotates to the right reference position and the left reference position, so that when the main bed 11 returns (rotates) near the main reference position, the right sub bed 12 and the left sub bed 13 are positioned at the right tilt position and the left tilt position. are doing. Thereby, when the main bed 11 returns (rotates) near the main reference position, it is possible to reliably prevent the care recipient P1 from falling off the nursing care bed.

  In the above embodiment, the right sub-bed 12 and the left sub-bed 13 are rotated to the reference position by the elastic deformation force of the right leaf spring 33 and the left leaf spring 34. However, the present invention is not limited to this. The mechanism for rotating the left and right sub-beds 13 to the reference position can be changed as appropriate.

  In the above embodiment, the first arm 21 is formed so as to be inclined leftward toward the lower end, and the second arm 22 is formed so as to be inclined rightward toward the lower end. Without being limited, the shapes of the first arm 21 and the second arm 22 can be appropriately changed. For example, the first arm 21 and the second arm 22 may be formed in a linear shape or an arc shape.

10 Nursing bed 11 Main bed (main floor)
12 Right subbed (1st subbed)
13 Left subbed (second subbed)
14 base 21 first arm 22 second arm 33 right leaf spring (first biasing member)
34 left leaf spring (second biasing member)
41 1st right motor (main floor motor, 1st sub floor motor)
43 1st left motor (motor for main floor, motor for second sub floor)
45a 1st center wire (wire for main floor)
45b 1st right wire (1st sub floor wire)
45c 1st left wire (2nd sub floor wire)
51 Second right motor (Main floor motor, First sub floor motor)
53 2nd left motor (motor for main floor, motor for second sub floor)
55a 2nd center wire (wire for main floor)
55b 2nd right wire (1st sub floor wire)
55c 2nd left wire (2nd sub floor wire)

Claims (3)

A main floor where the care recipient can lie in the first direction;
A first reference position parallel to the main floor and a first reference position parallel to the main floor, and a first inclination inclined upward with respect to the main floor are connected to one end of the main floor in a second direction orthogonal to the first direction. A first sub-floor part rotatable between one inclined position,
Between a second reference position parallel to the main floor and a second inclined position inclined upward with respect to the main floor, the second floor being rotatably connected to the other end of the main floor in the second direction. A second sub-floor part rotatable with;
A main floor tilt mechanism for rotating and tilting the main floor around an axis extending in the first direction as a rotation center;
The first sub-floor is rotated from the first reference position to the first tilt position to be tilted, and the second sub-floor is rotated from the second reference position to the second tilt position to be tilted. Floor tilt mechanism,
With
The main floor tilt mechanism,
A motor for the main floor,
A main floor wire that is wound up by the forward rotation of the main floor motor and is loosened by the reverse rotation of the main floor motor,
An arm that protrudes from the lower surface of the main floor and is engaged with the main floor wire, and is displaced upward in response to winding of the main floor wire to tilt the main floor. A nursing bed characterized by the following. The nursing bed according to claim 1,
The nursing bed, wherein the arm protrudes from a lower surface of the main floor and is provided to be inclined in the second direction. The nursing bed according to claim 1 or 2,
The sub-floor tilt mechanism,
A first biasing member that biases the first sub floor toward the first inclined position;
A second urging member for urging the second sub-floor portion toward the second inclined position;
A first sub floor motor;
When one end is fixed to the first sub-floor section and the other end is fixed to the first sub-floor section motor, and the first sub-floor motor is wound, the first sub-floor motor is rotated. A first sub-floor wire for pulling the floor toward the first reference position against the urging of the first urging member;
A second sub floor motor;
When one end is fixed to the second sub-floor portion and the other end is fixed to the second sub-floor portion motor, and the second sub-floor motor is wound, the second sub-floor motor is rotated. A second sub-floor wire for pulling the floor toward the second reference position against the bias of the second biasing member;
With
The first urging member is driven by driving the first sub-floor motor and the second sub-floor motor so as to loosen the first sub-floor wire and the second sub-floor wire. And the second biasing member inclines the first sub-floor from the first reference position to the first tilt position, and moves the second sub-floor from the second reference position to the second tilt position. A nursing bed characterized by being inclined.