Source: https://patents.google.com/patent/JP2016007425A/en
Timestamp: 2020-08-14 17:34:18
Document Index: 314517787

Matched Legal Cases: ['art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3']

JP2016007425A - Nursing bed - Google Patents
Nursing bed Download PDF
JP2016007425A
JP2016007425A JP2014130340A JP2014130340A JP2016007425A JP 2016007425 A JP2016007425 A JP 2016007425A JP 2014130340 A JP2014130340 A JP 2014130340A JP 2014130340 A JP2014130340 A JP 2014130340A JP 2016007425 A JP2016007425 A JP 2016007425A
JP2014130340A
本 康 彦 橋
2014-06-25 Application filed by 川崎重工業株式会社, Kawasaki Heavy Ind Ltd filed Critical 川崎重工業株式会社
2014-06-25 Priority to JP2014130340A priority Critical patent/JP2016007425A/en
2015-06-24 Priority claimed from CN201580034251.4A external-priority patent/CN106659624B/en
2016-01-18 Publication of JP2016007425A publication Critical patent/JP2016007425A/en
PROBLEM TO BE SOLVED: To provide a nursing bed capable of easily changing a body position of a care-receiver lying on a bed to an optimum posture.SOLUTION: A nursing bed 1 comprises: fixing members 13A forming a fixed floor surface of a floor part 3 on which a care-receiver P lies; movable members 13B movable with respect to the fixing members 13A and forming a movable floor surface of the floor part 3; and movable member drive means 5 for driving the movable members 13B. The fixing member 13A has a plurality of slender portions extending in a cross direction or a longitudinal direction. The movable member 13B has a mobile body 13B which can be protruded upward with respect to the fixed floor through gaps between the plurality of slender portions and moved at least in one of the longitudinal direction and the cross direction by the movable member drive means 5.
The present invention relates to a care bed, and more particularly to a care bed that can move the body of a care receiver lying on the bed.
When a cared person needs to go to bed for a long time, it tends to cause floor rubbing, which is very painful by the cared person. Floor rubbing is a phenomenon in which the part protruding from the bones, such as the waist, shoulders, and ankles, becomes uncirculated due to weight compression and falls into necrosis.
In order to prevent floor rubbing, it is necessary to change the position of the cared person appropriately, especially when it is difficult for the cared person to move the body by himself. It is necessary to respond appropriately by inserting a pillow into the bed.
The work by the caregiver to prevent floor rubbing needs to move the body of the caregiver who has become heavy, it is heavy labor, and it is necessary to do it every day or night, for example, every 1 to 2 hours, This is a huge burden for caregivers. Also, for those who receive care, forcing caregivers to work hard often tends to be a mental burden.
In order to reduce the burden on such caregivers (and care recipients), part of the floor surface (bed surface) of the care bed is movable, manually or using power, There has been proposed a technique for changing a posture of a cared person by appropriately moving a movable part (the following Patent Documents 1-11).
Japanese Patent No. 2716093 JP 2000-342633 A JP 2002-78755 A Japanese Patent No. 4231363 Japanese Patent Laid-Open No. 1-238859 JP-A-7-8523 Japanese Patent Laid-Open No. 7-303684 JP-A-11-239524 JP 2000-325408 A JP 2002-85481 A JP 2004-222908 A
However, the conventionally proposed nursing bed simply slides the entire body of the cared person on the bed floor at the same time, or tilts a part of the bed floor (for example, the part corresponding to the upper body). The caregiver's body position is only supported by the inclined bed floor surface, or when the cared person's body is moved, a locally unnaturally strong force is applied, and the cared person is It was a burden on the body.
For this reason, in the conventionally proposed nursing beds, it has been extremely difficult or impossible to change the posture of the cared person to an optimal posture without hindrance in order to prevent bedsores.
In addition, since a conventional care bed has a mechanism for changing the position of the cared person that is mechanically integrated with the bed body, the type of cared person (severe legs, lower back) Depending on the severity, etc., it was not possible to add a postural change mechanism to the site where it was desired to prevent bed slipping.
The present invention has been made in view of the above-mentioned problems of the prior art, and can provide a care bed that can change the position of a care receiver lying on the bed to its optimum posture without difficulty. The purpose is to provide.
According to the first aspect of the present invention, there is provided a care bed having a front-rear direction dimension and a left-right direction dimension, a fixing member that forms a fixed floor surface of a floor part for a care receiver to lie down, and the fixing member A movable member that forms a movable floor surface of the floor portion, and movable member driving means for driving the movable member, each of the fixed members being in the left-right direction or the The movable member has a plurality of elongated portions extending in the front-rear direction, and the movable member is protruded upward with respect to the fixed floor surface by the movable member driving means through the gap between the plurality of elongated portions. And a moving body that can be operated in at least one of the direction and the left-right direction.
The present invention according to a second aspect is the present invention according to the first aspect, wherein the fixing member further includes a plurality of additional elongated portions each extending in the front-rear direction or the left-right direction, The fixing member is formed in a lattice shape by the elongated portions and the plurality of additional elongated portions.
The present invention according to a third aspect is the present invention according to the first or second aspect, wherein the movable member has a plurality of moving bodies, and the movable member driving means operates the plurality of moving bodies simultaneously. It can be made to feature.
The present invention according to a fourth aspect is the present invention according to any one of the first to third aspects, wherein the movable member has a plurality of the moving bodies, and the movable member driving means has the plurality of moving bodies. Can be operated independently of each other.
According to a fifth aspect of the present invention, in the present invention according to any one of the first to fifth aspects, the movable member driving means receives a rotational driving force from a rotational driving body attached to a distal end portion of a robot arm. It is comprised so that it may be comprised.
According to a sixth aspect of the present invention, in the present invention according to the fifth aspect, the movable member driving means has a plurality of rotated driving bodies that are selectively and separably connected to the rotary driving body. Each of the plurality of driven rotating bodies is installed corresponding to different operations in the movable member.
According to a seventh aspect of the present invention, in the present invention according to any one of the first to sixth aspects, the movable member is configured such that, in a normal time, the movable floor surface is the same height as the fixed floor surface or the fixed floor. It arrange | positions so that it may be located in the height lower than a surface, It is characterized by the above-mentioned.
The present invention according to the eighth aspect is a nursing bed having a plurality of floor units that can be tilted independently of each other in a nursing bed having a longitudinal dimension and a lateral dimension. And a floor unit driving means for driving the plurality of floor units to incline independently from each other, and each of the plurality of floor units forms a fixed floor surface of the floor unit. And a movable member that is movable with respect to the fixed member and forms a movable floor surface of the floor unit, and movable member driving means for driving the movable member, The movable member driving means projects upward with respect to the fixed floor surface through an opening formed in the fixed member and operates in at least one of the front-rear direction and the left-right direction. Having a moving body bets can, be characterized.
According to a ninth aspect of the present invention, in the present invention according to the eighth aspect, in the floor unit of at least one of the plurality of floor units, the movable member driving means moves the movable body in the front-rear direction or It is possible to perform a rotational movement around the horizontal axis.
The present invention according to a tenth aspect is the present invention according to the eighth or ninth aspect, wherein at least one floor unit of the plurality of floor units has the plurality of moving bodies, The movable member driving means is capable of operating the plurality of moving bodies independently of each other.
The present invention according to an eleventh aspect is the present invention according to the eighth or ninth aspect, wherein at least one floor unit of the plurality of floor units has the plurality of moving bodies, The movable member driving means can simultaneously operate the plurality of moving bodies belonging to the common floor unit.
The present invention according to a twelfth aspect is the present invention according to the eighth or ninth aspect, wherein each of the at least two floor units among the plurality of floor units has the plurality of moving bodies. The movable member driving means operates differently from the plurality of moving bodies belonging to the other one of the at least two floor section units, to the plurality of moving bodies belonging to one of the at least two floor section units. It can be made to be able to make it.
The present invention according to a thirteenth aspect is the present invention according to any one of the eighth to twelfth aspects, wherein at least one of the floor unit driving means and the movable member driving means is attached to a distal end portion of a robot arm. The rotational driving force is transmitted from the rotational driving body.
The present invention according to a fourteenth aspect is the present invention according to the thirteenth aspect, wherein at least one of the floor unit driving means and the movable member driving means is selectively and separably connected to the rotary driving body. A plurality of rotated drive bodies, and each of the plurality of rotated drive bodies is installed corresponding to different operations in the floor unit and / or the movable member. .
The present invention according to a fifteenth aspect is the present invention according to any one of the eighth to fourteenth aspects, wherein the movable member has the movable floor surface at the same height as the fixed floor surface or the fixed floor in a normal state. It arrange | positions so that it may be located in the height lower than a surface, It is characterized by the above-mentioned.
According to the sixteenth aspect of the present invention, there is provided a care bed having a floor for a care receiver to lie down, a movable member forming at least a part of the floor, and a movable member for operating the movable member Drive means, posture information acquisition means for acquiring posture information relating to the posture of the care receiver lying on the floor, and the movable member based on the posture information obtained by the posture information acquisition means And a control means for controlling the drive means to change the posture of the cared person into a predetermined posture by the operation of the movable member.
The present invention according to a seventeenth aspect is the present invention according to the sixteenth aspect, in which the control means includes the current posture information obtained by the posture information acquiring means, and posture information in the target predetermined posture. And the movable member is operated a plurality of times so that the difference between the current posture of the care recipient and the predetermined posture is gradually reduced.
According to an eighteenth aspect of the present invention, in the present invention according to the sixteenth or seventeenth aspect, the posture information acquisition means acquires the posture information by imaging the care receiver.
The present invention according to a nineteenth aspect is the present invention according to any one of the sixteenth to eighteenth aspects, wherein the movable member driving means is transmitted with a rotational driving force from a rotational driving body attached to a distal end portion of a robot arm. It is comprised so that it may be comprised.
According to a twentieth aspect of the present invention, in the present invention according to the nineteenth aspect, the movable member driving means has a plurality of rotation driven bodies connected selectively and separably to the rotation driving body. Each of the plurality of driven rotating bodies is installed corresponding to different operations in the movable member.
The present invention according to a twenty-first aspect is the present invention according to any one of the sixteenth to twentieth aspects, wherein the movable member is configured such that the movable floor surface is the same height as the fixed floor surface or the fixed floor in a normal state. It arrange | positions so that it may be located in the height lower than a surface, It is characterized by the above-mentioned.
According to a twenty-second aspect of the present invention, there is provided a care bed having a floor for a care receiver to lie down on, a movable member forming at least a part of the floor, and a movable member for operating the movable member Drive means, and the movable member and the movable member drive means are configured in a modular manner so that the movable member and the movable member drive means can be detachably attached to a desired position in the entire floor portion.
According to a twenty-third aspect of the present invention, in the present invention according to the twenty-second aspect, the movable member driving means is configured such that a rotational driving force is transmitted from a rotational driving body attached to a distal end portion of a robot arm. It is characterized by that.
The present invention according to a twenty-fourth aspect is the present invention according to the twenty-third aspect, wherein the movable member driving means has a plurality of driven members that are selectively and separably connected to the rotary driver. Each of the plurality of driven rotating bodies is installed corresponding to different operations in the movable member.
According to a twenty-fifth aspect of the present invention, in the present invention according to any one of the twenty-second to twenty-fourth aspects, the movable member has the movable floor surface at the same height as the fixed floor surface or the fixed floor in a normal state. It arrange | positions so that it may be located in the height lower than a surface, It is characterized by the above-mentioned.
According to a twenty-sixth aspect of the present invention, there is provided a care bed having a floor for a care receiver to lie down, a movable member forming at least a part of the floor, and a movable member for operating the movable member Driving means, wherein the movable member driving means is configured to transmit a rotational driving force from a rotary driving body attached to a distal end portion of a robot arm, and the movable member driving means is configured to rotate the rotational member. A plurality of driven members that are selectively and separably connected to the driver; and each of the plurality of driven members is installed corresponding to a different operation of the movable member. It is characterized by that.
According to the care bed according to the present invention, the posture of the cared person lying on the bed can be changed without difficulty to the optimum posture.
The perspective view which showed the bed for care by one Embodiment of this invention. The top view which showed typically the bed for nursing care shown in FIG. The top view which showed typically the bed base of the bed for nursing care shown in FIG. 1, and the part of a drive mechanism. The side view for demonstrating the function of each driving force input port of the drive mechanism of the care bed shown in FIG. The schematic diagram for demonstrating operation | movement of the bed for nursing care shown in FIG. The other schematic diagram for demonstrating operation | movement of the bed for nursing care shown in FIG. The top view which showed typically the modification of the care bed shown in FIG. The top view which showed typically the other modification of the bed for care shown in FIG. The top view which showed typically the other modification of the bed for care shown in FIG. The perspective view for demonstrating the drive mechanism regarding the waist | hip | lumbar part and shoulder part of the care bed shown in FIG. The perspective view which showed the mode at the time of the input rotation for a vertical motion in the drive mechanism shown in FIG. The perspective view which showed the mode at the time of the input rotation for left-right movement in the drive mechanism shown in FIG. The perspective view for demonstrating the drive mechanism regarding the foot | leg part area | region of the care bed shown in FIG. The side view which showed a mode that rotational power was connected with respect to the driving force input port of the drive mechanism of the care bed shown in FIG. The front view which showed a mode that rotational power was connected with respect to the driving force input port of the drive mechanism of the care bed shown in FIG. Sectional drawing which showed the internal structure of the robot arm of the drive mechanism of the care bed shown in FIG. FIG. 17 is an enlarged cross-sectional view of the distal end portion of the robot arm shown in FIG. 16. FIG. 2 is a perspective view showing a state in which a driving force input port and a rotary driving body at the tip of a robot arm are connected in the nursing bed driving mechanism shown in FIG. 1. The assembly figure of the power connection part of the bed for nursing care shown in FIG. Explanatory drawing which showed a mode that the backlash (eccentricity etc.) at the time of a connection is absorbed in the power connection part of the bed for nursing care shown in FIG. The side view which showed the modification of the driving force input port and robot arm of the drive mechanism of the care bed shown in FIG. The front view of the driving force input port and robot arm shown in FIG. The perspective view which showed the modification of the power connection part of the drive mechanism of the care bed shown in FIG. The perspective view which showed the modification of the power connection part of the drive mechanism of the care bed shown in FIG. Sectional drawing which showed the structure which drives each driving force input port of two nursing beds with one robot as a modification of the driving mechanism of the nursing bed shown in FIG. The typical perspective view for demonstrating one modification of the drive mechanism of the bed for nursing care shown in FIG. The typical front view for demonstrating one modification of the drive mechanism of the bed for nursing care shown in FIG. The typical side view for demonstrating one modification of the drive mechanism of the bed for nursing care shown in FIG. The typical bottom view for demonstrating one modification of the drive mechanism of the bed for nursing care shown in FIG. The typical perspective view for demonstrating the other modification of the drive mechanism of the care bed shown in FIG. The top view which showed typically the bed for care by other embodiment of this invention. The typical side view of the bed for care shown in FIG. The schematic diagram which showed the upper surface of the floor part unit of the care bed shown in FIG. 31 with the driving force input port. The schematic diagram which showed the side surface of the floor part unit shown in FIG. 33 with the driving force input port. The schematic diagram for demonstrating operation | movement of the bed for nursing care shown in FIG. FIG. 32 is a plan view schematically showing a floor unit of a modification of the care bed shown in FIG. 31. The side view which showed typically the floor part unit shown in FIG. The side view which showed typically other embodiment of the bed for care shown in FIG. The side view which showed typically the state which removed the unit of the bed for care shown in FIG. The side view which showed typically other embodiment of the bed for care shown in FIG. The flowchart for demonstrating operation | movement of the bed for nursing care shown in FIG. The figure which showed the control parameter regarding operation | movement of the bed for nursing care shown in FIG.
Hereinafter, a nursing bed according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the nursing bed 1 according to the present embodiment has a dimension L in the front-rear direction and a dimension W in the left-right direction. The front-rear direction dimension L and the left-right direction dimension W correspond to the front-rear direction dimension and the left-right direction dimension of the floor portion 3 that forms the floor surface 2 on which the care receiver P lies.
The floor 3 is disposed above the bed base 4, and the bed base 4 is provided with a drive mechanism 5 for moving at least a part of the floor 3. At least a part of the driving mechanism 5 corresponds to the movable member driving means in the present invention.
As shown in FIG. 2, the floor 3 of the care bed 1 is divided into a head region 8, a shoulder region 9, a waist region 10, and a foot region 11 along the front-rear direction. The head region 8 of the floor 3 is formed by a series of plate-like rectangular members 12.
The shoulder region 9 and the waist region 10 corresponding to the center portion in the front-rear direction of the floor 3 are respectively movable with respect to the fixed member 13A that forms the fixed floor 2A and the fixed member 13A. And a movable member 13B to be formed. The fixing member 13A has a structure in which a plurality of elongated members extending in the left-right direction are connected by a pair of left and right edge members extending in the front-rear direction. The movable member 13B is composed of a plurality of elongated moving bodies arranged in the gaps between the plurality of elongated members of the fixed member 13A. A gap is secured over the entire circumference between the inner peripheral surface forming the gap in the fixed member 13A and the outer peripheral surface of the movable member 13B.
The plurality of movable bodies (movable members) 13B are caused to protrude upward with respect to the fixed floor 2A through the gaps between the plurality of elongated members of the fixed member 13A by the drive mechanism 5 and in the left-right direction within the gaps of the fixed members 13A. Can be operated. The moving body 13B belonging to the shoulder region 9 and the moving body 13B belonging to the waist region 10 can be driven independently from each other by the drive mechanism 5. Further, the plurality of moving bodies 13 </ b> B belonging to the shoulder region 9 are integrally driven by the drive mechanism 5. Similarly, the plurality of moving bodies 13 </ b> B belonging to the waist region 10 are integrally driven by the drive mechanism 5.
The foot region 11 includes a portion corresponding to the right foot and a portion corresponding to the left foot. The part corresponding to the right foot is constituted by a pair of movable rectangular pieces 14 juxtaposed in the front-rear direction, and the part corresponding to the left foot is also constituted by a pair of movable rectangular pieces 14 juxtaposed in the front-rear direction. .
A portion corresponding to the right foot and a portion corresponding to the left foot of the foot region 11 are respectively pushed up by the drive mechanism 5 and raised as shown in FIG. Thereby, the cared person's P right leg or left leg can be pushed up from the back of the knee, and can be bent.
As shown in FIG. 3, the bed base 4 incorporates two robots (two robot arms 6), and each robot arm 6 can be driven independently. In FIG. 3, the bed base 4 is displayed relatively small in order to easily display the configuration of the drive mechanism 5.
As shown in FIG. 4, the driving mechanism 5 provided on the bed base 4 includes a robot arm 6 and a plurality of driving force input ports (rotated driving bodies) to which the tip of the robot arm is selectively connected. ) 7. Each of the plurality of driving force input ports 7 (7A, 7B, 7C, 7D, 7E) corresponds to different movement operations in the floor portion 3.
Next, with reference to FIG. 5 and FIG. 6, operation | movement of the moving body 13B at the time of changing the posture of the care receiver P in the care bed 1 is demonstrated.
As shown in FIG. 5A, the movable body 13B is arranged so that the movable floor surface 2B is positioned at the same height as the fixed floor surface 2A in the normal state. That is, at the normal time, the movable floor surface 2B and the fixed floor surface 2A are positioned at the same height, and the floor surface 2 is configured in a common plane.
From the state shown in FIG. 5A, the moving body 13B is lowered by the drive mechanism 5 as shown in FIG. 5B. At this time, the body of the cared person P is supported by the fixed floor surface 2A of the fixing member 13A, and thus is held at the height of the fixed floor surface 2A.
Next, as shown in FIG. 5C, the driving mechanism 5 moves the moving body 13B to one side in the left-right direction using the left-right gap between the fixed member 13A and the moving body 13B. At this time, since the moving body 13B is separated from the body of the cared person P, the moving body 13B can be moved smoothly without causing the cared person P to feel uncomfortable.
Next, the moving body 13B is raised by the drive mechanism 5 as shown in FIG. Thereby, the body of the cared person P is pushed up by the movable floor 2B of the moving body 13B, and rises away from the fixed floor 2A.
Next, as shown in FIG. 6A, the driving mechanism 5 moves the moving body 13B to the other in the left-right direction using the gap in the left-right direction between the fixed member 13A and the moving body 13B. Thereby, the body of the cared person P also moves together with the moving body 13B. At this time, since the body of the cared person P is separated from the fixed floor surface 2A, the cared person P can be moved smoothly without causing discomfort to the cared person P.
Next, as shown in FIG. 6B, the driving mechanism 5 lowers the moving body 13B to a position lower than the fixed floor 2A. Thereby, the body of the care receiver P is placed on the fixed floor 2A.
Next, the drive mechanism 5 moves the moving body 13B to one side in the left-right direction as shown in FIG. At this time, since the moving body 13B is separated from the body of the cared person P, the moving body 13B can be moved smoothly without causing the cared person P to feel uncomfortable.
Next, the drive mechanism 5 raises the moving body 13B to the height of the fixed floor 2A as shown in FIG. Thereby, the movable floor 2B of the movable body (movable member) 13B and the fixed floor 2A of the fixed member 13A are flush with each other, and both form the floor 2 in a common plane.
By repeating the rotational movement of the moving body 13B described above, the body of the cared person P can be moved little by little in the left direction (or right direction) locally (for example, only the shoulder or only the waist). .
The posture change operation described above can be performed independently in the shoulder region 9 and the waist region 10. For example, it is possible to first move the shoulder portion of the cared person P in the shoulder region 9 and then move the waist portion of the cared person P in the waist region 10.
According to the care bed 1 according to the present embodiment, the body of the care recipient P is locally moved (for example, only the shoulder portion or only the waist portion) little by little by repeating the rotational operation of the moving body 13B. , You can change it to its optimal posture without difficulty.
Further, according to the care bed 1 according to the present embodiment, there is a gap in the horizontal direction between the fixed member 13A and the movable body (movable member) 13B, and nothing is filled in this gap. The horizontal movement stroke of the body 13B can be increased, and the filler in the gap does not protrude upward as the movable body 13B moves in the horizontal direction.
Note that a plurality of moving bodies 13B belonging to the shoulder region 9 may be operated simultaneously, or a plurality of moving bodies 13B belonging to the shoulder region 9 may be driven individually. Further, the plurality of moving bodies 13B belonging to the shoulder region 9 may be divided into several groups, and the plurality of moving bodies 13B belonging to each group may be driven simultaneously. The same applies to a plurality of moving bodies 13B belonging to the waist region 10.
FIG. 7 shows a modification of the embodiment shown in FIG. 1. In this modification, a plurality of fixing members 13 </ b> A constituting a part of the floor portion 3 extend in the front-rear direction and the left-right direction. It is formed in a lattice shape by the elongated members. A plurality of movable bodies (movable members) 13B constituting the other part of the floor portion 3 are movably disposed in the openings of the lattice-shaped fixing member 13A.
Also in this example, by moving the moving body 13B by the driving mechanism 5 and performing a rotational operation, the cared person P's body is locally moved little by little, and it changes without difficulty to its optimal posture. Can be made.
Also in this example, the plurality of moving bodies 13B belonging to the shoulder region 9 may be simultaneously driven to perform a rotational operation, or may be individually driven to perform a rotational operation. The plurality of moving bodies 13B belonging to the partial area 9 may be divided into several groups, and the plurality of moving bodies 13B belonging to each group may be simultaneously driven to perform a rotational operation. The same applies to a plurality of moving bodies 13B belonging to the waist region 10.
FIG. 8 shows another modification of the embodiment shown in FIG. 1. In this modification, the entire floor portion 3 of the care bed 1 includes a slit-shaped fixing member 13A and a plurality of elongated members. The movable body (movable member) 13B.
In this example, a plurality of moving bodies 13B are divided into several groups, and a plurality of moving bodies 13B belonging to each group are simultaneously driven to perform a rotational operation. Alternatively, the plurality of moving bodies 13B may be individually driven to perform a rotational operation.
In this example, the whole body of the cared person P can be locally moved little by little by the moving body 13B and can be changed to its optimal posture without difficulty.
FIG. 9 shows another modification of the embodiment shown in FIG. 1. In this modification, the entire floor portion 3 of the care bed 1 includes a lattice-shaped fixing member 13A and a plurality of movements. It is comprised with the body (movable member) 13B.
Also in this example, the plurality of moving bodies 13B are divided into several groups, and the plurality of moving bodies 13B belonging to each group are simultaneously driven to perform a rotational operation. Alternatively, the plurality of moving bodies 13B may be individually driven to perform a rotational operation.
Also in this example, the whole body of the cared person P can be locally moved little by little by the moving body 13B and can be changed to its optimum posture without difficulty.
Next, the internal structure of the drive mechanism 5 of the nursing bed 1 according to the embodiment shown in FIG. 1 will be described.
As shown in FIG. 10, the drive mechanism 5 includes a support base 15 having a floor 3 (a part thereof) provided at the upper end thereof. In addition, in FIG. 10, the floor part 3 (a part of) which consists of a some mobile body (movable member) 13B is typically shown as an integrated object.
The lower end portion of the support base 15 is supported by a linear motion support member (linear guide) 16, whereby the support base 15 is movable in the horizontal direction in the left-right direction of the bed. A linear motion support member 16 that supports the support base 15 is provided at the upper end of the movable support plate 17. The movable support plate 17 is supported by a pair of linear motion support members (linear guides) 18 extending in the vertical direction so as to be movable in the vertical direction.
A rack 19 extends in the vertical direction at one side end of the movable support plate 17, and a pinion 20 is engaged with the rack 19. The pinion 20 is provided at one end of the connecting shaft 21, and the wheel of the worm gear 22 is provided at the other end of the connecting shaft 21. The wheel of the worm gear 22 meshes with the worm of the worm gear 22, and the worm is formed at the input shaft 23 whose tip portion forms the driving force input port 7. The driving force input port 7 is a rotational power input unit for moving the floor 3 up and down.
A rack 24 is provided at the lower end of the support base 15, and a pinion 25 is engaged with the rack 24. The pinion 25 is provided at the upper end of the connection shaft 26, and a bevel gear 27 is provided at the lower end of the connection shaft 26. The bevel gear 27 meshes with a bevel gear 28 that is rotatably provided on the movable support plate 17.
A pulley 29 is integrally formed on the bevel gear 28 provided on the movable support plate 17, and a belt 30 is hung on the pulley 29. The belt 30 is hung on another pulley 31, the pulley 31 is provided at one end of the connection shaft 32, and the wheel of the worm gear 33 is provided at the other end of the connection shaft 32. The wheel of the worm gear 33 meshes with the worm of the worm gear 33.
A pinion 35 is provided at the end of the connecting shaft 34 on which the worm of the worm gear 33 is formed. The pinion 35 meshes with a rack 36 extending in the vertical direction. The rack 36 is supported by a linear motion support member (linear guide) 37 extending in the vertical direction so as to be vertically movable. On the linear motion support member 37, another rack 38 is supported integrally with the rack 36 so as to be movable up and down, and the rack 38 meshes with the pinion 39.
The pinion 39 is provided at one end of the input shaft 40, and the other end of the input shaft forms a driving force input port 7. The driving force input port 7 is a rotational power input unit for horizontally moving the floor 3 in the left-right direction.
Next, the operation | movement at the time of moving the floor part 3 of the care bed 1 up and down is demonstrated with reference to FIG.
When the driving force input port 7 </ b> B for vertical movement is rotated, this rotational power is transmitted to the connection shaft 21 via the worm gear 22. Then, the pinion 20 rotates integrally with the connection shaft 21, and the rack 19 moves in the vertical direction by the rotation of the pinion 20. Since the rack 19 is fixed to the movable support plate 17, the movable support plate 17 moves in the vertical direction together with the rack 19. Thereby, the floor portion 3 moves in the vertical direction together with the support base portion 15.
Since the connection shaft 34 moves up and down integrally with the movable support plate 17, the rack 36 also moves up and down at the same time. At this time, the driving force input port 7C for left and right movement rotates, but since the driving force input port 7C for left and right movement is free, there is no problem even if it rotates.
Further, since the worm gear 22 cannot be rotated from the output side, the posture at that time can be maintained even if the applied torque of the driving force input port 7B for vertical movement is removed.
Next, the operation | movement at the time of horizontally moving the floor part 3 of the bed 1 for nursing care in the left-right direction is demonstrated with reference to FIG.
When the driving force input port 7 </ b> C for lateral movement is rotated, this rotational force is transmitted to the rack 38 and moves up and down together with the other rack 36. The pinion 35 is rotated by the vertical movement of the rack 36, and this rotational force is transmitted to the pulley 31 via the worm gear 33.
When the pulley 31 is rotated, the other pulley 29 is simultaneously rotated via the belt 30. As a result, the bevel gear 28 provided integrally with the pulley 29 rotates, and the bevel gear 27 meshed with the bevel gear 28 rotates.
The pinion 25 rotates simultaneously with the rotation of the bevel gear 27, and the rack 24 moves in the left-right direction by the rotation of the pinion 25. As a result, the floor 3 moves horizontally with the support base 15 in the left-right direction.
Since the worm gear 33 has a structure that cannot be rotated from the output side, the posture at that time can be maintained even if the applied torque of the driving force input port 7C for lateral movement is removed.
FIG. 13 shows a foot drive mechanism for pushing up the movable rectangular piece 14 constituting the foot region 11 from below. In this foot drive mechanism, when the foot drive force input port 7A (7) is rotated, the input shaft 41 having the drive force input port 7A formed at the tip thereof rotates.
A worm constituting the worm gear 42 is formed on the input shaft 41, and power is transmitted to the wheel constituting the worm gear 42. A wheel of the worm gear 42 is provided at one end of the connection shaft 43, and a pinion 44 is provided at the other end of the connection shaft 43.
The pinion 44 meshes with the rack 45, and the rack 45 is provided at the side end of the movable support plate 17. The movable support plate 17 is supported by a pair of linear motion support members (linear guides) 46 extending in the vertical direction so as to be movable in the vertical direction.
The rack 45 moves up and down by the rotation of the pinion 44, and thereby the movable support plate 17 moves up and down. The lower end portion of the push-up member 47 is fixed to the upper end portion of the movable support plate 17, and the movable rectangular piece 14 is pushed up from below by the upper end portion of the push-up member 47.
As shown in FIGS. 14 and 15, the robot arm 6 has a proximal end portion 6 a and a distal end portion 6 b, and the proximal end portion 6 a of the robot arm 6 is attached to the upper end portion of the robot spindle 51. . A rotary drive body 52 is rotatably provided at the distal end portion 6 b of the robot arm 6.
The robot arm 6 includes a proximal end side link member 53 and a distal end side link member 54, and the proximal end portion of the proximal end side link member 53 constitutes the proximal end portion 6 a of the robot arm. The tip portion constitutes the tip portion 6 b of the robot arm 6. The distal end portion of the proximal end side link member 53 and the proximal end portion of the distal end side link member 54 are connected to each other so as to be rotatable.
As shown in FIG. 16, a drive motor 55 for the robot spindle 51 is provided inside the bed base 4, and the robot spindle 51 is rotationally driven around the first axis L1 by the drive motor 55. The
A drive motor 56 for the distal end side link member 53 is provided inside the proximal end side link member 53, and the distal end side link member 54 is rotationally driven around the second axis L2 by the drive motor 56.
A drive motor 57 for the rotational drive body 52 is provided inside the distal end side link member 54, and the rotational drive body 52 is rotationally driven around the third axis L3 by the drive motor 57.
Note that the first axis L1, the second axis L2, and the third axis L3 are parallel to each other.
The rotation of each drive motor 55, 56, 57 is controlled by the robot control unit 58. The robot controller 58 can store a program unique to the caregiver P so that the care receiver P can perform a floor rubbing prevention operation unique to the person.
As shown in FIG. 17, the bevel gear 59 on the drive motor 57 side and the bevel gear 60 on the rotational drive body 52 side mesh with each other. A through hole 61 including a spline groove is formed in the central portion of the bevel gear 60 on the rotation drive body 52 side, and the rotation drive shaft 62 is inserted into the through hole 61 so as to be movable along the third axis L3. ing. The rotation drive shaft 62 is spline-fitted to the through hole of the bevel gear 60, whereby the rotation drive shaft 62 is prevented from rotating around the third axis L3 with respect to the bevel gear 60. A linear motion along the third axis L3 is allowed.
A rotation drive body 52 is attached to one end of the rotation drive shaft 62, and the tip of the piston 64 of the air cylinder 63 is connected to the other end of the rotation drive shaft 62 via a bearing 65. Has been. By driving the air cylinder 63 to advance the piston 64, the rotary drive body 52 moves forward along the third axis L3 together with the rotary drive shaft 62.
When the drive motor 57 is driven, the rotational driving force is transmitted from the bevel gear 59 on the drive motor 57 side to the bevel gear 60 on the rotary drive body 52 side. Since the rotation drive shaft 62 of the rotation drive body 52 and the bevel gear 60 are spline-fitted, the rotation drive force of the bevel gear 60 is transmitted to the rotation drive shaft 62, and the rotation drive body 52 is integrated with the rotation drive shaft 62. Rotate.
Next, a connection mechanism for connecting the driving force input port 7 on the bed base 4 side and the rotary drive body 52 on the robot arm 6 side will be described with reference to FIGS.
When the air cylinder 63 is driven to connect the rotary drive body 52 at the tip of the robot arm 6 to the drive force input port 7 on the bed base 4 side, the rotary drive body 52 is positioned to the drive force input port 7. It is necessary to absorb errors and deviations (eccentricity, etc.) of mechanical tolerances between the rotational drive body 52 and the driving force input port 7, and this must be performed by coupling.
Therefore, in this embodiment, as shown in FIGS. 18 and 19, this deviation is absorbed by adopting Oldham coupling. That is, in Oldham coupling, the deviation of the projections of the hubs 66 and 67 is absorbed by sliding in the groove of the slider 68 (see FIG. 20). The hub 66 and the slider 68 constitute the rotary drive body 52, and the hub 67 constitutes the driving force input port 7.
Here, in the drive mechanism 5 in the present embodiment, the slider 68 is attached to the hub 66 on the robot arm 6 side in a horizontal direction so that the drive side and the driven side are attached and detached, and the axial direction during coupling In order to alleviate the impact, a spring 69 is interposed between the hub 66 on the robot arm 6 side and the slider 68.
Next, an operation example of the drive mechanism 5 of the care bed 1 according to the present embodiment will be described.
The robot arm 6 is driven, and the rotational driving body 52 at the tip of the arm is brought close to the desired driving force input port 7 and positioned. The air cylinder 63 at the tip of the robot arm 6 is driven, the rotary drive body 52 is advanced toward the driving force input port 7 along the third axis L3, and both are engaged. At this time, the stroke length of the air cylinder 63 is detected, and it is confirmed that the rotational driving body 52 and the driving force input port 7 are normally engaged with each other.
Subsequently, the drive motor 57 at the tip of the robot arm 6 is driven to rotate the rotary drive body 52. Since the rotational driving body 52 is connected to the driving force input port 7, the rotational force from the rotational driving body 52 is transmitted to the driving force input port 7. As a result, the part of the floor 3 corresponding to the driving force input port 7 performs a predetermined operation.
When the driving force input port 7 is rotated by a predetermined amount, the driving motor 57 is stopped. The air cylinder 63 is driven to retract the rotary drive body 52, and the rotary drive body 52 and the driving force input port 7 are disconnected. The robot arm 6 is driven, and the rotational driving body 52 is moved to the next driving force input port 7 and positioned.
Next, an operation example of the care bed according to the present embodiment, that is, a shape changing method will be described.
The rotary drive body 52 at the tip of the robot arm 6 is connected to the first drive force input port 7A (corresponding to the right knee), and the drive motor 57 is rotated. Thereby, the rotational drive force from the rotational drive body 52 is transmitted to the drive system of the site | part corresponding to the right knee of the floor part 3 of the bed 1 for care. As a result, the part corresponding to the right knee is deformed into a mountain shape.
After stopping the rotation of the drive motor 57, the air cylinder 63 is driven to disconnect the power connection portion (the rotary drive body 52 and the drive force input port 7), the robot arm 6 is driven, and the second drive force input port The rotational drive body 52 at the tip of the robot arm 6 is connected to 7B (corresponding to the upper and lower waist regions).
In this state, the drive motor 57 is rotated. Thereby, the rotational driving force from the rotational driving body 52 is transmitted to the vertical drive system of the moving body 13 </ b> B corresponding to the waist region 10 of the floor portion 3 of the care bed 1. As a result, the moving body 13B corresponding to the waist region 10 rises.
After the rotation of the drive motor 57 is stopped, the air cylinder 63 is driven to disconnect the power connection portion, the robot arm 6 is driven, and the robot arm 6 is connected to the third driving force input port 7C (corresponding to the waist region horizontal). The rotation drive body 52 at the tip is connected.
In this state, the drive motor 57 is rotated. Thereby, the rotational driving force from the rotational driving body 52 is transmitted to the horizontal driving system of the moving body 13 </ b> B corresponding to the waist region 10 of the floor portion 3 of the care bed 1. As a result, the moving body 13B corresponding to the waist region 10 moves horizontally.
After stopping the rotation of the drive motor 57, the air cylinder 63 is driven to disconnect the power connecting portion, the robot arm 6 is driven, and the robot arm is connected to the fourth drive force input port 7D (corresponding to the upper and lower shoulder regions). 6 The rotational drive body 52 at the tip is connected.
In this state, the drive motor 57 is rotated. Thereby, the rotational driving force from the rotational driving body 52 is transmitted to the vertical drive system of the moving body 13B corresponding to the shoulder region 9 of the floor 3 of the care bed 1. As a result, the moving body 13B corresponding to the shoulder region 9 rises.
After stopping the rotation of the drive motor 57, the air cylinder 63 is driven to disconnect the power connection portion, the robot arm 6 is driven, and the robot arm is connected to the fifth drive force input port 7E (corresponding to the shoulder region horizontal). 6 The rotational drive body 52 at the tip is connected.
In this state, the drive motor 57 is rotated. Thereby, the rotational driving force from the rotational driving body 52 is transmitted to the horizontal driving system of the moving body 13 </ b> B corresponding to the shoulder region 9 of the floor portion 3 of the care bed 1. As a result, the moving body 13B corresponding to the shoulder region 9 moves horizontally.
In this state, the drive motor 57 is rotated. Thereby, the rotational driving force from the rotational driving body 52 is transmitted to the horizontal driving system of the moving body 13 </ b> B corresponding to the waist region 10 of the floor portion 3 of the care bed 1. As a result, the moving body 13B corresponding to the waist region 10 further moves horizontally.
In this state, the drive motor 57 is rotated. Thereby, the rotational driving force from the rotational driving body 52 is transmitted to the horizontal driving system of the moving body 13 </ b> B corresponding to the shoulder region 9 of the floor portion 3 of the care bed 1. As a result, the moving body 13B corresponding to the shoulder region 9 further moves horizontally.
As described above, the robot is taught to program the bedsore prevention operation suitable for the care recipient P. The above operation example is a case where the shoulder and waist trunks are shifted to the left, and in order to shift the trunk further to the right from now on, the above procedure is reversed, and the trunk is once returned straight, Furthermore, the driving force input port corresponding to the left knee is selected to change the posture.
Note that the upper and lower directions of the up and down operation and the right and left directions of the horizontal operation are switched by forward / reverse rotation of the drive motor 57.
As a modification of the above-described embodiment, the robot arm 6 may be configured by a single link member including a base end portion 6a and a tip end portion 6b. That is, as shown in FIGS. 21 and 22, the base end portion of one link member 49 is attached to the upper end portion of the robot spindle 51, and the rotational drive body 52 is provided at the distal end portion of the link member 49. It has been.
The plurality of driving force input ports 7 are disposed on a virtual circle centered on the rotation axis (first axis L1) of the robot spindle 51. In this configuration, the robot arm 6 is turned by the rotation of the robot spindle 51, and the rotary driving body 52 at the tip of the robot arm 6 can be positioned in front of the desired driving force input port 7.
In this modification as well, the connection mechanism between the rotary driving body 52 and the driving force input port 7 is the same as in the above-described embodiment.
As another modification of the above embodiment, as shown in FIG. 23, a cross-shaped connection recess 7 a is formed in the driving force input port 7, and a cross-shaped connection protrusion is formed in the rotary drive body 52. A portion 52a is formed. The connecting concave portion 7a and the connecting convex portion 52a have dimensions and shapes that fit each other gently.
Further, as shown in FIG. 23, the connecting convex portion 52a has a tapered shape, while the connecting concave portion 7a has an inclined shape corresponding to the tapered shape of the connecting convex portion 52a. .
In this connection method, the connection convex portion 52 a of the rotary drive body 52 is fitted into the connection concave portion 7 a formed in the driving force input port 7 from the front. At this time, the taper shape of the connecting convex portion 52a and the inclined shape of the connecting concave portion 7a engage with each other, whereby the positioning function in the direction of absorbing the positioning error or the like to the driving force input port 7 of the rotary driving body 52 is achieved. Is exhibited and natural fitting can be achieved.
As another modified example of the above-described embodiment, regarding the connection method of the rotational drive body 52 and the driving force input port 7, those connections are made close to each other along the direction orthogonal to the rotational axis (third axis L3). You may comprise so that it may connect.
Specifically, as shown in FIG. 24, in the driving force input port 7, a connection recess 7 a is formed along the diameter direction, and in the rotary drive body 52, a connection protrusion is formed along the diameter direction. A portion 52a is formed. The connecting concave portion 7a and the connecting convex portion 52a have dimensions and shapes that fit each other gently.
In this connection method, as shown in FIG. 24, the connection convex portion 52a of the rotary drive body 52 can be fitted into the connection concave portion 7a formed in the driving force input port 7 from the side surface. For this reason, when connecting to the driving force input port 7, there is no need to advance the rotary drive body 52 in the direction of the rotation axis (third axis L3), and the structure can be simplified by omitting the air cylinder 63 and the like. it can.
As another modification of the above-described embodiment, a plurality of driving force input ports 7 of the two nursing beds 1 may be selectively driven by the rotation driving body 52 of the common robot arm 6. good.
That is, in this modification, as shown in FIG. 25, the floor portion 3 of the care bed 1 and its drive mechanism (excluding the robot arm portion) are arranged two by two. The robot spindle 51 is arranged in the vertical direction, and each driving force input port 7 is also arranged in the vertical direction via the bevel gear 70.
In this modification, the robot arm 6 is rotationally driven in the horizontal direction and positioned at a desired driving force input port 7, so that the plurality of driving force input ports 7 of one care bed 1 and the other The plurality of driving force input ports 7 of the care bed 1 can be selectively rotated by the rotation driving body 52 of the common robot arm 6.
As another modification of the above-described embodiment, as a mechanism for moving the rotary drive body 52 at the tip of the robot arm 6 forward and backward, the robot main shaft 51 is moved along the axis of rotation instead of a mechanism that provides an air cylinder at the tip of the arm. A mechanism for moving the robot arm 6 may be provided so that the entire robot arm 6 is moved by the advance operation of the robot spindle 51.
As another modified example of the above-described embodiment, regarding the connection mechanism between the rotational driving body 52 and the driving force input port 7, instead of the method of driving the rotational driving body 52 forward and backward with respect to the driving force input port 7, An air cylinder or the like may be provided on the input port 7 side so that the driving force input port 7 is driven forward and backward with respect to the rotary drive body 52.
As another modified example of the above-described embodiment, a robot is used instead of the method of fitting the concave portion and the convex portion as described above with respect to the connection method of the power connecting portion (the driving force input port 7 and the rotary driving body 52). A friction plate may be provided on the rotary drive body 52 at the tip of the arm 6, and a friction plate may also be provided on the driving force input port 7.
In this modification, both the friction plates are engaged to achieve the connected state by pressing against the driving force input port 7 while rotating the rotary driving body 52. In this way, there is a slip between the friction plates at the time of connection, so that power transmission is smooth. For this reason, the operation | movement of the floor part 3 also becomes smooth and the load to the care receiver P can be further reduced.
Further, as another connection method of the power connection portion (the driving force input port 7 and the rotation driving body 52), a method of connecting the rotation driving body 52 and the driving force input port 7 by magnetic force may be adopted.
Next, various modifications of the drive mechanism 5 of the care bed 1 described above will be described.
In the above embodiment, the drive motor 57 is installed at the tip of the robot arm 6 and the rotational driving force is supplied to each driving force input port 7. A plurality of drive motors may be installed for each part of the floor portion 3, and clutch switching for transmitting the driving force to each part may be operated by the robot arm 6. In that case, instead of the driving force input port 7, a switch for operating the clutch is installed on the bed base 4 side.
Alternatively, one drive motor may be installed on the bed base 4 side, and the robot arm 6 may be used to switch the clutch when distributing and transmitting the drive force to each part. In that case, instead of the driving force input port 7, a switch for operating the clutch is installed on the bed base 4 side.
Regardless of whether the drive source is on the robot side or the bed base 4 side, or whether the number of drive sources is singular or plural, the drive system is changed to motor rotation. Thus, an air drive (airbag, air cylinder, etc.) can be used.
In addition, a robot as a driving force switching mechanism can be placed on the moving carriage without being installed on the bed base 4 side.
Further, the driving force switching mechanism can be switched by, for example, a sequencer without using a robot.
As another modification of the drive mechanism 5 described above, the moving direction of the movable body (movable member) 13B can be driven in the front-rear direction in addition to the up-down direction and the left-right direction, respectively. Then, the movable body 13B is rotated. 26 to 29 show the drive mechanism 5 that can drive the movable body 13B in the three directions of up and down, left and right, and front and rear. As shown in FIG. 26, the drive mechanism 5 simultaneously drives the three movable bodies 13B formed integrally.
The drive mechanism 5 shown in FIG. 27 to FIG. 29 has a pair of first ball screws 71 extending in the left-right direction, and the pair of first ball screws 71 rotate simultaneously via the first toothed belt 72. It is configured. One end of the pair of first ball screws 71 forms a first internal port 73, and the first internal port 73 is connected to one of the drive input ports 7 via a flexible wire (not shown). ing.
A pair of first nut members 74 are screwed onto the pair of first ball screws 71, and the pair of first nut members 74 are moved along guide rails (not shown) by the rotation of the pair of first ball screws 71. Move left and right.
A second ball screw 75 extending in the front-rear direction is rotatably inserted into the pair of first nut members 74. A screw is cut at a central portion of the second ball screw 75, and a second nut member 76 is screwed to the portion where the screw is cut.
A second toothed belt 77 is engaged with the second ball screw 75, and the second toothed belt 77 is supported by four rotating members 78 so as to run. In order to ensure the meshing state of the second toothed belt 77 and the second ball screw 75, for example, the second toothed belt 77 may be pressed from above with a roller or the like.
One of the four rotating members 78 that support the second toothed belt 77 forms a second internal port 79, and the second internal port 79 is driven by a flexible wire (not shown). Connected to one of the ports 7. By running the second toothed belt 77, the second ball screw 75 rotates, and accordingly, the second nut member 76 moves in the front-rear direction along the guide rail (not shown).
A third ball screw 80 extending in the vertical direction is rotatably supported by the second nut member 76, and is screwed into the third ball screw 80 to a third nut member 81 connected to the moving body 13B. . A lower end portion of the third ball screw 80 is connected to the third internal port 82 via the flexible wire 82. The third internal port 83 is connected to one of the drive input ports 7 via a flexible wire (not shown). By rotating the third ball screw 80, the third nut member 81 guided by a guide rail (not shown) can be driven up and down.
By using the drive mechanism 5 described above, the moving body 13B can be operated not only in the rotational movement around the longitudinal axis, that is, in the lateral movement of the patient's trunk (FIGS. 5 and 6), but also in the lateral direction. A rotational movement around the axis, that is, a movement movement in the height direction of the patient can be performed.
When the first internal port 73 is rotated, the second nut member 76 moves in the left-right direction. If the second toothed belt 77 is stopped at this time, the second ball screw 75 is driven to rotate. The two nut members 76 also move in the front-rear direction at the same time. Therefore, when the second nut member is moved only in the left-right direction, the second internal port 79 is simultaneously rotated to cancel the induced motion. Note that the robot arm 5 of the second robot is used for rotational driving of the drive input port 7 connected to the second internal port 79.
As shown in FIG. 27, by placing the limit switch 84 at a predetermined position in the movable range of the moving body 13B, the moving body 13B can be accurately moved to the predetermined position in each of the up, down, left, and right directions. Can be made.
The drive mechanism 5 shown in FIG. 30 is configured to individually drive each of the plurality of moving bodies 13B. In the drive mechanism 5, one moving body 13 </ b> B is assigned to one third ball screw 80. Thereby, each movable body 13B can be driven independently up and down, right and left, and front and back.
According to the nursing bed 1 according to the present embodiment, the robot arm 6 is driven by a program built in the robot control unit 58 in advance to automatically perform a predetermined floor rubbing prevention operation. The caregiver is not required to perform the work regularly, the caregiver's mental and physical burden is eliminated, and the care recipient P is also freed from the mental burden on the caregiver.
In addition, since the rotational driving force is selectively transmitted to the plurality of driving force input ports 7 by the common rotational driving body 52 by positioning the robot arm 6, a driving source for realizing a plurality of different operations is provided. One is sufficient, and the configuration can be simplified.
In addition, by changing the teaching content to the robot, the designation order (sequence) of the driving force supply point (driving force input port 7) can be easily changed. Can increase the flexibility.
Moreover, since the robot arm 6 itself performs the power transmission switching function for the plurality of driving force input ports 7, a conventional clutch mechanism for switching the power transmission destination can be eliminated.
In addition, since the movable body (movable member) 13B performs a rotational operation within the range where the fixed member 13A exists in all directions such as up and down, left and right, and front and rear, it can operate not only in the left and right direction of the bed but also in the front and rear direction. In addition, the movable body 13B does not protrude in that direction, and a fine operation is possible. For example, when the upper body is moved to the front side and the lower body is moved to the rear side, it is possible to move the upper and lower bodies.
Next, a nursing bed according to another embodiment of the present invention will be described with reference to FIGS. 31 to 35.
As shown in FIGS. 31 and 32, the bed for care according to the present embodiment includes the floor unit 3 including a plurality of floor unit 3A. The drive mechanism 5 shown in FIGS. 27 to 29 is accommodated in each floor unit 3A. As shown in FIG. 33, each floor unit 3A includes a slit-shaped fixing member 13A13A and a plurality of elongated moving bodies (movable members) 13B. The drive input port 7 and the internal ports 73, 79, 83 are connected by a flexible wire 85, and power is supplied to the drive mechanism 5 in the floor unit 3A via the flexible wire 85.
As shown in FIGS. 35 (a), (b), and (c), the plurality of floor units 3A are inclined and driven independently from each other by the floor unit driving means 86. The floor unit drive means 86 is connected to the drive input port 7 via a flexible wire (not shown), and power is supplied therefrom. As the floor unit driving means 86, for example, an elevating drive mechanism shown in FIG. 13 can be employed.
In the present embodiment, the moving body 13B can be driven by different operations for each floor unit 3A. Alternatively, a plurality of moving bodies 13B belonging to the same floor unit 3A may be integrally formed and driven simultaneously, or may be separately formed and individually driven. Alternatively, the plurality of moving bodies 13B belonging to the same floor unit 3A may be divided into several groups, and the plurality of moving bodies 13B belonging to each group may be driven simultaneously.
Also in this embodiment, the rotational operation shown in FIGS. 5 and 6 can be performed by the moving body 13B by the drive mechanism 5.
As a modification of the present embodiment, as shown in FIGS. 36 and 37, the floor unit 3A may be composed of a lattice-shaped fixed member 13A and a plurality of moving bodies (movable members) 13B. it can. Also in this example, the movable body 13B can be driven by different operations for each floor unit 3A. Alternatively, a plurality of moving bodies 13B belonging to the same floor unit 3A may be integrally formed and driven simultaneously, or may be separately formed and individually driven. Alternatively, the plurality of moving bodies 13B belonging to the same floor unit 3A may be divided into several groups, and the plurality of moving bodies 13B belonging to each group may be driven simultaneously.
Next, a care bed according to another embodiment of the present invention will be described with reference to FIGS. 38 and 39.
The care bed according to the present embodiment is configured in a modular manner so that the floor unit 3A and the drive mechanism 5 can be detachably mounted at desired positions in the entire floor. Specifically, in the above-described embodiment shown in FIG. 32, the drive mechanism 5 is modularized into separable units 5A and 5B as shown in FIG. Thereby, as shown in FIG. 39, some units 5B of the drive mechanism 5 can be removed.
In the present embodiment, one robot is configured to be shared among a plurality of modules 5A and 5B. As a result, the structure can be simplified and the manufacturing cost can be reduced.
According to the care bed according to the present embodiment, the floor unit 3A and the drive mechanism 5 are configured in a modular manner so that they can be detachably mounted at desired positions in the entire floor portion. Depending on the type of P (severe foot, severe back, etc.), a module can be added as appropriate to the site where it is desired to prevent bed slipping. Thereby, it can respond flexibly with respect to the care receiver P of various types.
Next, a nursing bed according to another embodiment of the present invention will be described with reference to FIGS.
The care bed according to the present embodiment is a posture for acquiring posture information regarding the posture of the care receiver P lying on the bed in each of the above-described embodiments and their modifications, as shown in FIG. Based on the information acquisition means 90 and the posture information obtained by the posture information acquisition means 90, the driving mechanism (movable member driving means) 5 is controlled, and the posture of the cared person P is determined by the operation of the moving body (movable member) 13B. And a control means 58 for changing the position to a predetermined posture.
The control means 58 analyzes the current posture information obtained by the posture information acquisition means 90 and the posture information in the target predetermined posture, and the difference between the current posture of the care recipient P and the predetermined posture. The moving body 13B is operated over a plurality of times so as to gradually decrease.
The posture information acquisition means 90 is preferably an infrared camera that acquires posture information by imaging the cared person P. By using an infrared camera, even when the care recipient P is wearing a futon, the posture and position of the human body can be specified by image processing that extracts only the limbs of the human body.
In the care bed according to the present embodiment, a plurality of easy postures for the care recipient P or postures instructed by a doctor are registered in advance, and the current posture is gradually approached to one easy posture. Can continue. Alternatively, it can be gradually moved from one easy posture to another easy posture.
In this way, the plurality of moving bodies 13B are rotated little by little in order so that the posture of the cared person P becomes a certain (easy) position, and the body position can be moved naturally for the cared person P. To do.
FIG. 41 shows an operation procedure of the care bed according to the present embodiment. First, a certain target posture is set (S1), the cared person P is imaged by the camera 90 (S2), and the posture of the cared person P is specified (S3). Next, the difference between the current posture of the care recipient P and the target posture is analyzed, and the difference in each part (shoulder, waist, etc.) of the care recipient is obtained (S4).
It is determined whether the posture difference obtained by each part is zero or less than a predetermined value (S4). If YES, the operation is temporarily terminated. On the other hand, when the obtained posture difference is not zero or greater than or equal to a predetermined value (NO), the movable body (movable member) 13B corresponding to each part is operated in a predetermined order or by a predetermined amount (S6). ), The process returns to step S2.
Note that the above-described rotational operation of the moving body 13B is sequentially performed at desired time intervals by sequentially setting new target postures in step S1. Thereby, it is possible to effectively prevent bed slipping of the cared person P lying on the bed for a long period of time.
FIG. 42 shows an example of a change pattern from the current angle to the target angle when the movable body (movable member) 13B is operated. For convenience, each part assumes a rotation angle in the direction around the longitudinal axis of the bed. As a basic operation, each part is operated by a predetermined amount one place at a time. A plurality of each unit may be operated simultaneously. In this case, however, a plurality of robot arms 6 are required. The predetermined amount to be operated at a time may be different for each part.
Conventional care beds have a bed shape in a certain posture, and the posture of the care recipient P is subordinately adapted to the shape of the bed. In many cases, there is an error, so there is a limit to make the cared person P take a desirable posture.
On the other hand, the care bed according to the present embodiment captures the cared person P with the camera 90 and identifies its posture, and the posture of the cared person P is mainly determined as a desired posture based on the identified posture. To. Thereby, the posture of the cared person P can be reliably changed to a desired posture.
DESCRIPTION OF SYMBOLS 1 Bed for care 2 Floor 2A Fixed floor 2B Movable floor 3 Floor 3A Floor unit 4 Bed base 5 Drive mechanism 6 Robot arm 6a Base end of robot arm 6b Robot arm tip 7 Driving force input port 8 Head region 9 Shoulder region 10 Lumbar region 11 Foot region 12 Rectangular member 13A Fixed member 13B Movable member (moving body)
14 movable rectangular piece 15 support base 16, 18, 37, 46 linear motion support member (linear guide)
17 Movable support plate 19, 24, 24A, 36, 38, 45 Rack 20, 25, 35, 39, 44 Pinion 21, 26, 32, 34, 43 Connection shaft 22, 33, 42 Worm gear 23, 40, 41 Input shaft 27, 28, 48, 59, 60, 70 Bevel gears 29, 31 Pulley 30 Belt 47 Lifting member 49 Link member 51 Robot spindle 52 Rotating drive 53 Base end side link member 54 Front end side link member 55, 56, 57 Drive motor 58 Robot controller 61 Through hole 62 Rotating drive shaft 63 Air cylinder 64 Piston 65 Bearing 66, 67 Oldham coupling hub 68 Oldham coupling slider 69 Spring 71, 75, 80 Ball screw 72, 77 Toothed belt 73, 79, 83 Internal port 74, 76, 81 Nut member 82, 85 Flexible wire 84 Limit switch 86 Floor unit drive means L1 1st axis L2 2nd axis L3 3rd axis P Caregiver
In a nursing bed having dimensions in the front-rear direction and in the left-right direction,
A fixing member that forms a fixed floor surface of the floor for the care recipient to lie down;
A movable member which is movable with respect to the fixed member and forms a movable floor surface of the floor portion;
Movable member drive means for driving the movable member,
The fixing member has a plurality of elongated portions each extending in the left-right direction or the front-rear direction,
The movable member can be protruded upward with respect to the fixed floor surface through the gaps between the plurality of elongated portions by the movable member driving means, and can be operated in at least one of the front-rear direction and the left-right direction. A nursing bed having a moving body.
The fixing member further includes a plurality of additional elongated portions each extending in the front-rear direction or the left-right direction,
The care bed according to claim 1, wherein the fixing member is formed in a lattice shape by the plurality of elongated portions and the plurality of additional elongated portions.
The movable member has a plurality of the moving bodies,
The nursing bed according to claim 1 or 2, wherein the movable member driving means can operate the plurality of moving bodies simultaneously.
The care bed according to any one of claims 1 to 3, wherein the movable member driving means can operate the plurality of moving bodies independently of each other.
The nursing bed according to any one of claims 1 to 4, wherein the movable member driving means is configured so that a rotational driving force is transmitted from a rotational driving body attached to a distal end portion of a robot arm. .
The movable member driving means has a plurality of driven rotation bodies that are selectively and separably connected to the rotary drive body, and each of the plurality of driven drive bodies is different from each other in the movable member. The nursing bed according to claim 5, wherein the care bed is installed corresponding to an operation.
7. The movable member according to claim 1, wherein the movable member is arranged so that the movable floor surface is normally positioned at the same height as the fixed floor surface or lower than the fixed floor surface. The nursing bed described in the item.
A floor for a care recipient to lie down, having a plurality of floor units that can be tilted independently of each other;
A floor unit driving means for driving the plurality of floor units to incline independently from each other, and
Each of the plurality of floor units is a fixed member that forms a fixed floor surface of the floor unit, and a movable member that is movable with respect to the fixed member and forms a movable floor surface of the floor unit. A movable member driving means for driving the movable member,
The movable member can be caused to project upward with respect to the fixed floor surface and to operate in at least one of the front-rear direction and the left-right direction through an opening formed in the fixed member by the movable member driving means. A nursing bed having a moving body.
The at least one floor unit among the plurality of floor units may be configured such that the movable member driving means can cause the movable body to rotate around the axis in the front-rear direction or the left-right direction. 8. A nursing bed according to 8.
At least one floor unit among the plurality of floor units has a plurality of the moving bodies,
The care bed according to claim 8 or 9, wherein the movable member driving means can operate the plurality of moving bodies independently of each other.
The care bed according to claim 8 or 9, wherein the movable member driving means can simultaneously operate the plurality of moving bodies belonging to the common floor unit.
Each of at least two floor units among the plurality of floor units has a plurality of the moving bodies,
The movable member driving means operates differently from the plurality of moving bodies belonging to the other one of the at least two floor unit to the plurality of moving bodies belonging to one of the at least two floor unit. 10. The care bed according to claim 8 or 9, which can be made to be used.
The at least one of the floor unit driving means and the movable member driving means is configured so that a rotational driving force is transmitted from a rotational driving body attached to a distal end portion of a robot arm. The nursing bed according to any one of the above.
At least one of the floor unit driving means and the movable member driving means has a plurality of rotation driven bodies that are selectively and separably connected to the rotation driving body, and the plurality of rotation driving bodies Each of these is installed corresponding to the mutually different operation | movement in the said floor part unit and / or the said movable member, The care bed of Claim 13.
15. The movable member according to claim 8, wherein the movable member is disposed so that the movable floor surface is normally positioned at the same height as the fixed floor surface or lower than the fixed floor surface. The nursing bed described in the item.
In the care bed having the floor for the care recipient to lie down,
A movable member forming at least a part of the floor,
Movable member driving means for operating the movable member;
Posture information acquisition means for acquiring posture information related to the posture of the care receiver lying on the floor;
Control means for controlling the movable member driving means based on the posture information obtained by the posture information acquisition means, and changing the posture of the care receiver to a predetermined posture by the operation of the movable member; Nursing bed with
The control means analyzes the current posture information obtained by the posture information acquisition means and posture information in the target predetermined posture, and the current posture of the care receiver and the predetermined posture The care bed according to claim 16, wherein the movable member is operated a plurality of times so as to gradually reduce the difference.
The care bed according to claim 16 or 17, wherein the posture information acquisition means acquires the posture information by imaging the care receiver.
The nursing bed according to any one of claims 16 to 18, wherein the movable member driving means is configured to transmit a rotational driving force from a rotational driving body attached to a distal end portion of a robot arm. .
The movable member driving means has a plurality of driven rotation bodies that are selectively and separably connected to the rotary drive body, and each of the plurality of driven drive bodies is different from each other in the movable member. 20. The care bed according to claim 19, wherein the care bed is installed in response to an operation.
21. The movable member according to any one of claims 16 to 20, wherein the movable member is arranged so that the movable floor surface is normally positioned at the same height as the fixed floor surface or lower than the fixed floor surface. The nursing bed described in the item.
Movable member driving means for operating the movable member,
A nursing bed configured such that the movable member and the movable member driving means can be detachably attached to a desired position in the entire floor portion.
23. The nursing bed according to claim 22, wherein the movable member driving means is configured so that a rotational driving force is transmitted from a rotational driving body attached to a distal end portion of a robot arm.
The movable member driving means has a plurality of driven rotation bodies that are selectively and separably connected to the rotary drive body, and each of the plurality of driven drive bodies is different from each other in the movable member. 24. The nursing bed according to claim 23, which is installed in correspondence with an operation.
25. The movable member according to any one of claims 22 to 24, wherein the movable member is arranged so that the movable floor surface is normally positioned at the same height as the fixed floor surface or lower than the fixed floor surface. The nursing bed described in the item.
The movable member driving means is configured such that a rotational driving force is transmitted from a rotational driving body attached to the tip of the robot arm,
The movable member driving means has a plurality of rotationally driven bodies that are selectively and separably connected to the rotationally driven body,
Each of the plurality of rotated driving bodies is installed corresponding to different operations in the movable member.
JP2014130340A 2014-06-25 2014-06-25 Nursing bed Pending JP2016007425A (en)
JP2014130340A JP2016007425A (en) 2014-06-25 2014-06-25 Nursing bed
KR1020177001993A KR101911189B1 (en) 2014-06-25 2015-06-24 Nursing bed
US15/322,366 US10660808B2 (en) 2014-06-25 2015-06-24 Nursing bed
PCT/JP2015/068219 WO2015199137A1 (en) 2014-06-25 2015-06-24 Nursing bed
CN201580034251.4A CN106659624B (en) 2014-06-25 2015-06-24 Nursing bed
EP15811838.0A EP3162345B1 (en) 2014-06-25 2015-06-24 Nursing bed
JP2016007425A true JP2016007425A (en) 2016-01-18
ID=54938215
JP2014130340A Pending JP2016007425A (en) 2014-06-25 2014-06-25 Nursing bed
US (1) US10660808B2 (en)
EP (1) EP3162345B1 (en)
JP (1) JP2016007425A (en)
KR (1) KR101911189B1 (en)
WO (1) WO2015199137A1 (en)
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2015-06-24 EP EP15811838.0A patent/EP3162345B1/en active Active
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2015-06-24 WO PCT/JP2015/068219 patent/WO2015199137A1/en active Application Filing
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EP3162345A1 (en) 2017-05-03
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2019-07-30 A601 Written request for extension of time
2020-01-31 A131 Notification of reasons for refusal
2020-03-31 A521 Written amendment