EP3417842B1 - Assistance robot - Google Patents
Assistance robot Download PDFInfo
- Publication number
- EP3417842B1 EP3417842B1 EP16890479.5A EP16890479A EP3417842B1 EP 3417842 B1 EP3417842 B1 EP 3417842B1 EP 16890479 A EP16890479 A EP 16890479A EP 3417842 B1 EP3417842 B1 EP 3417842B1
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- European Patent Office
- Prior art keywords
- holding member
- path
- sitting
- standing
- section
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- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 description 18
- 210000003141 lower extremity Anatomy 0.000 description 11
- 210000001217 buttock Anatomy 0.000 description 4
- 230000037396 body weight Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
- A61G7/1013—Lifting of patients by
- A61G7/1017—Pivoting arms, e.g. crane type mechanisms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
- A61G7/1013—Lifting of patients by
- A61G7/1019—Vertical extending columns or mechanisms
Definitions
- the present invention relates to an assistance robot.
- Patent literature 1 discloses an assistance robot that appropriately moves a holding member that holds a care receiver to assist the care receiver in a standing operation and a sitting operation. With such an assistance robot, it is desirable to appropriately position the holding member so as not to cause the care receiver discomfort.
- the assistance robot of patent literature 1 is provided with different movement paths that each correspond to the standing operation and the sitting operation. Thus, by entering a standing operation or a sitting operation as a requested operation, the assistance robot performs control of the position of the holding member based on a movement path corresponding to the requested operation.
- Patent literature 1 International publication WO2014/122752
- the WO2015011837 discloses an assistance robot having a base, a holding member, a driving device and a driving control section. The trajectory can be corrected based on the foot position of the care receiver.
- the present invention takes account of such problems, and an object thereof is to provide an assistance robot that assists standing and sitting operations of a care receiver by moving a holding member on a movement path in accordance with a usage state.
- the assistance robot of claim 1 is provided with: a base, a holding member configured to hold an upper body of a care receiver; a driving device configured to move the holding member in an up-down direction and a left-right direction of the base; and a control device configured to control operation of the driving device.
- the control device includes: a memory section configured to memorize a standing path that is a movement path of the holding member corresponding to a standing operation of the care receiver, and a sitting path that is a movement path of the holding member corresponding to a sitting operation of the care receiver; a path setting section configured to, in a case in which the standing operation or the sitting operation has been entered as a requested operation, select one of the standing path or the sitting path that corresponds to the requested operation, or one of the standing path or the sitting path that does not correspond to the requested operation, based on a usage state including a current position of the holding member, and set the selected movement path as a reference path; and a driving control section configured to move the holding member based on the set reference path.
- the reference path is switched based on the current state of the holding member.
- a movement path that does not correspond to the requested operation may be set.
- a holding member that moves based on the reference path is moved based on the sitting path instead of the standing path even though the standing operation was requested, and cases in which the holding member that moves based on the reference path is moved based on the standing path instead of the sitting path even though the sitting operation was requested
- the movement path can be set in accordance with the current state of the holding member, that is, the usage state of the assistance robot. This allows a care receiver to be assisted in a standing operation or a sitting operation without any discomfort to the care receiver or an operator operating the assistance robot.
- Assistance robot 1 assists standing of care receiver M (shown in figs. 2 and 3 ) from a sitting posture to a standing posture and assists sitting from standing posture to a sitting posture.
- assistance robot 1 can be maneuvered by only one caregiver such that care receiver M can be moved, for example, to a target location in a care facility.
- a "standing posture” means a state in which at least the lower half of care receiver M is upright; it does not necessarily refer to a state in which the upper half of care receiver M is upright.
- assistance robot 1 is provided with base 10, supporting device 20, controller 50, and control device 60.
- base 10 is configured to allow care receiver M to get on and to move in a front-rear direction and a left-right direction while care receiver M is on base 10.
- base 10 is provided with frame 11, support column 12, footrest 13, fixed cover 14, and multiple wheels 15.
- Frame 11 of base 10 is positioned slightly above floor surface 2 (floor or ground) and is substantially horizontal with respect to floor surface 2.
- Support column 12 is fixed to frame 11 and stands upright on an upper front surface of frame 11.
- Support column 12 is arranged centrally in the left-right direction towards the front of frame 11. Note that, in the present embodiment, assistance robot 1 includes one support column 12, but two or more support columns 12 may be provided.
- Footrest 13 is fixed to a rear upper surface of frame 11 for care receiver M to load their feet on.
- Contact marks 13a for the feet of care receiver M are provided on an upper surface of footrest 13.
- Contact marks 13a act as a foot positioning guide for care receiver M.
- fixed cover 14 is fixed to frame 11 or support column 12. Fixed cover 14 covers the range of a lower portion of raising and lowering main body 31 of raising and lowering section 30 in driving device 23, which is described later, and protects the inside of driving device 23.
- Multiple wheels 15 are provided on base 10 and support base 10 to be movable with respect to floor surface 2.
- Supporting device 20 is provided on base 10 and is configured to support care receiver M in a standing posture (refer to fig. 3 ).
- supporting device 20 includes holding member 21, lower limb contacting section 22, and driving device 23.
- Holding member 21 holds the upper body of care receiver M.
- holding member 21 is provided with torso receiving section 21a that contacts the torso of care receiver M and underarm receiving sections 21b that support the underarms of care receiver M. Note that, holding member 21 may be provided with only one of torso receiving section 21a and underarm receiving sections 21b.
- Torso receiving section 21a supports the torso of care receiver M from below. Torso receiving section 21a has a wide surface and is made of a cushion material. Torso receiving section 21a is formed to have an initial shape that matches that of a typical care receiver M, and is flexible to change shape to match the torso of each individual care receiver M. In the present embodiment, torso receiving section 21a contacts care receiver M from the chest to the abdomen.
- Underarm receiving sections 21b are formed to have an arc shape and are provided on the right and left sides of torso receiving section 21a such that the arc opening faces upward. Underarm receiving sections 21b support the underarms of care receiver M from below so as to support the upper body of care receiver M. Further, underarm receiving sections 21b regulate forward and rearward movement of care receiver M by sandwiching both underarm portions of care receiver M from the front and rear. Accordingly, torso receiving section 21a and underarm receiving sections 21b regulate the shoulder position of care receiver M being held by holding member 21.
- Lower limb contacting section 22 contacts a front portion (shin or knee) of the lower limbs of care receiver M in a sitting posture, thereby helping to decide the position and posture of the lower body of care receiver M in a sitting posture. In particular, the positions of the legs are decided to a certain extent.
- Lower limb contacting section 22 is fixed to support column 12 of base 10.
- Lower limb contacting section 22 is provided with two support members 22a and lower limb contacting main body 22b.
- Support members 22a are L-shaped. One end of the L shape of support member 22a is fixed to support column 12, and the other end of the L shape of support member 22a is positioned to the rear of support column 12.
- Lower limb contacting main body 22b is fixed to the other end of support member 22a and is positioned to the rear of raising and lowering cover 33 and below oscillation support section 32.
- Lower limb contacting main body 22b is a portion for contacting the front of the lower limbs of care receiver M, has a wide surface, and is formed of a cushion material.
- Driving device 23 supports holding member 21 to be movable with respect to the up-down direction and the front-rear direction of base 10, and moves holding member 21 along multiple different movement paths.
- driving device 23 includes raising and lowering section 30 and oscillating section 40. Raising and lowering section 30 moves in the up-down direction with respect to base 10. Raising and lowering section 30 is provided with raising and lowering main body 31, oscillation support section 32, and raising and lowering cover 33.
- raising and lowering main body 31 is formed elongated in the up-down direction.
- Raising and lowering main body 31 is provided on a rear surface of support column 12 to be movable linearly in the up-down direction.
- Raising and lowering main body 31 is guided by a guide (not shown) on the rear surface of support column 12, and is driven by a linear motion device (not shown).
- Raising and lowering main body 31 is enclosed by fixed cover 14.
- Oscillation support section 32 is provided on an upper end side of raising and lowering main body 31 and includes oscillating shaft center 32a that is parallel to the left-right direction.
- raising and lowering cover 33 is fixed to raising and lowering section 30 and encloses raising and lowering main body 31 and oscillation support section 32. Further, raising and lowering cover 33 encloses support column 12 and fixed cover 14. Note that, in the present embodiment, assistance robot 1 includes one raising and lowering section 30 with respect to one support column 12. However, in a case where two or more support columns 12 are provided, a quantity of raising and lowering sections 30 may be provided corresponding to the quantity of support columns 12.
- Oscillating section 40 moves holding member 21 with respect to raising and lowering section 30 in the front-rear direction of base 10, and rotates holding member 21 around an axis parallel to the left-right direction of base 10.
- Oscillating section 40 is provided with oscillation main body 41, arm 42, and grip 43.
- Oscillation main body 41 is removably attached to torso receiving section 21a of holding member 21.
- Arm 40 is provided to rotate around oscillating shaft center 32a of oscillation support section 32 of raising and lowering section 30.
- Arm 42 is rotated by an arm driving device (not shown).
- arm 42 pivots forwards from a state extending to the rear.
- arm 42 pivots rearwards to a state extending to the rear.
- Grip 43 is U-shaped as seen from the front-rear direction, and both ends of the U shape of grip 43 are fixed to oscillation main body 41.
- the center section of grip 43 is positioned to the front of torso receiving section 21a and oscillation main body 41 and is gripped by care receiver M who is being held by holding member 21. Also, grip 43 is used when a caregiver is pulling assistance robot 1 and so on.
- oscillating section 40 rotates holding member 21 attached to oscillation main body 41 on the front end of arm 42 around an axis (oscillating shaft center 32a) parallel to the left-right direction of base 10.
- Oscillating section 40 by rotating holding member 21, oscillates holding member 21 to be at an angle regulated with respect to the position of holding member 21 in the front-rear direction.
- Controller 50 is an input device for receiving inputs by an operator (caregiver or care receiver M).
- controller 50 includes standing switch 51, sitting switch 52, raising switch 53, and lowering switch 54.
- Standing switch 51 receives an instruction for an operation request of a standing operation for assisting care receiver M to a standing posture from the current state including the current position and current angle of holding member 21.
- Sitting switch 52 receives an instruction for an operation request of a sitting operation for assisting care receiver M to a sitting posture from the current state of holding member 21.
- Raising switch 53 receives an instruction for an operation request for a raising operation for raising holding member 21 from the current position.
- Lowering switch 54 receives an instruction for an operation request for a lowering operation for lowering holding member 21 from the current position.
- Controller 50 is connected to control device 60 such that communication is possible, and in a case in which only one of the switches is pushed, sends the operation corresponding to the pushed switch as an operation request to control device 60.
- Control device 60 controls operation of driving device 23 such that holding member 21 is lowered and raised and oscillated in accordance with the operation request sent from controller 50.
- Control device 60 is fixed to frame 11 of base 10 to the side of support column 12.
- Control device 60 includes memory section 61, path setting section 62, and driving control section 63.
- Memory section 61 memorizes standing operation data 71 and sitting operation data 72.
- Standing operation data 71 is two-dimensional coordinate data representing standing path 81 (refer to fig. 5 ) that is a movement path of holding member 21 corresponding to standing operation of a care receiver M.
- Sitting operation data 72 is two-dimensional coordinate data representing sitting path 82 (refer to fig. 5 ) that is a movement path of holding member 21 corresponding to sitting operation of a care receiver M.
- the origin point of the two-dimensional coordinate data may be a given reference point in the moving range of holding member 21, or the position of the center of gravity of assistance robot 1.
- standing path 81 and sitting path 82 of holding member 21, for example, are paths along which a reference point of holding member 21 is moved by operation of driving device 23.
- standing path 81 is a curved path from first position P1 to second position P2.
- sitting path 82 is a path configured from a curved path from second position P2 to third position P3 and a straight path from third position P3 to first position P1.
- Path setting section 62 in a case in which a standing operation or a sitting operation is input as an operation request, sets either of standing path 81 or sitting path 82 as a reference path based on the current state including the current position of holding member 21.
- Driving control section 63 moves holding member 21 based on the set reference path. Specifically, driving control section 63 synchronizes operation of raising and lowering section 30 and oscillating section 40 and controls operation of driving device 23 such that holding member 21 is moved along the reference path.
- control device 60 for example, in a case in which sitting switch 52 of controller 50 is pushed, controls movement of holding member 21 along standing path 81 in addition to controlling movement of holding member 21 along sitting path 82. Similarly, this applies when standing switch 51 of controller 50 is pushed. In this manner, the purpose of executing operation processing of holding member 21 based a movement path not corresponding to the requested operation is so that holding member 21 is moved along a movement path corresponding to the usage state of assistance robot 1.
- path setting section 62 in a case in which standing switch 51 or sitting switch 52 is pushed so as to input a requested operation, sets the reference path of the requested operation based on at least one of the current position and the current angle of holding member 21 that are included in the current state of holding member 21.
- path setting section 62 sets the reference path of the requested operation based on the current position of holding member 21 and area information 73 memorized in memory section 61.
- the above area information 73 represents multiple areas demarcated by a specified position of holding member 21 in at least one of the up-down direction and the front-rear direction with respect to base 10.
- specified position Pr is a position of holding member 21 in the front-rear direction with respect to base 10 and is set based on the angle of holding member 21.
- driving device 23 of the embodiment is configured to move holding member 21 in the front-rear direction and to rotate holding member 21 around oscillation shaft center 32a by rotating arm 42 of oscillating section 40. That is, as shown in the lower section of fig. 5 , oscillating section 40 oscillates holding member 21 to be at an angle ⁇ regulated with respect to the position of holding member 21 in the front-rear direction. As shown in figs. 2 and 3 , angle ⁇ of holding member 21 is an angle with respect to a vertical axis, and increases as holding member 21 moves forward.
- the buttock portion Mb of the care receiver M is raised from the seat of chair and their body weight is leaning towards supporting device 20.
- the position of holding member 21 in the front-rear direction corresponding to specified angle ⁇ t of holding member 21 in the above state is set as the above specified position Pr.
- Included in the multiple areas represented by area information 73 are standing priority area Ar and sitting priority area As generated by demarcating the moving region Rn of holding member 21 in the front-rear direction via specified position Pr.
- Standing priority area Ar is an area for which path setting section 62 gives priority to setting standing path 81 as the reference path in a case in which holding member 21 is positioned in that area.
- Standing priority area As is an area for which path setting section 62 gives priority to setting sitting path 82 as the reference path in a case in which holding member 21 is positioned in that area.
- standing priority area Ar is positioned to the rear of sitting priority area As.
- Reference path setting processing by path setting section 62 of control device 60 is described below with reference to figs. 5 to 8 .
- Reference path setting processing is executed when, for example, standing switch 51 or sitting switch 52 of controller 60 is pushed so as to input a standing operation or a sitting operation as a requested operation. Note that, when raising switch 53 or lowering switch 54 of controller 50 are pushed, because operation of raising and lowering section 30 is controlled without using the reference path, reference path setting processing is not executed.
- path setting section 62 of control device 60 first, determines whether the requested operation and the previous operation that moved holding member 21 to the current position are the same (step 11 [hereinafter, "step” is abbreviated to "S"]). For this, path setting section 62 acquires information representing the previous operation that is temporarily memorized in memory section 61. This information includes, as the previous operation, a standing operation, a sitting operation, a raising operation, and a lowering operation. Also, in a case in which information representing the previous operation is not memorized, path setting section 62 determines that the power switch (not shown) has just been turned on, and that the previous operation was turning on the power.
- Path setting section 62 when determining that the previous operation and the requested operation are the same (S11: yes), sets the movement path of holding member 21 corresponding to the requested operation as the reference path regardless of the current state of holding member 21 (S15). Then, the same operation as the previous operation is restarted by controlling driving control section 63.
- This operation assumes a case in which, for example, an operator released standing switch 51 during standing operation, and then pushed standing switch 51 again (patterns N11 and N12 in fig. 7 ).
- path setting section 62 determines whether the previous operation was any of the raising operation, the lowering operation, or turning on the power (S12). If the previous action is determined to be one of the raising operation, the lowering operation, or turning on the power (S12: yes), path setting section 62 sets the movement path of holding member 21 corresponding to the requested operation as the reference path regardless of the current state of holding member 21. Then, holding member 21 is moved from the current position and the current angle along the reference path corresponding to the requested operation by control of driving control section 63 (patterns N15 and N16 in fig. 7 and patterns N25 and N26 in fig. 8 ).
- Path setting section 62 in a case in which the previous is none of the raising operation, the lowering operation, or turning on the power (S12: no), that is, the requested operation is the standing operation and the previous operation was the sitting operation, or the requested operation was the sitting operation and the previous operation was the standing operation, acquires the current state of holding member 21 (S13). In the embodiment, path setting section 62 acquires current position Pc of holding member 21 as the current state.
- path setting section 62 selects one of standing path 81 or sitting path 82 based on the current position of holding member 21 and area information 73, and sets that path as the reference path of the requested operation (S14). Specifically, if the area to which current position Pc of holding member 21 belongs is standing priority area Ar, standing path 81 is set as the reference path of the requested operation. On the other hand, if the area to which current position Pc of holding member 21 belongs is sitting priority area As, sitting path 82 is set as the reference path of the requested operation.
- standing path 81 is set as the reference path (pattern N13 in fig. 7 ).
- the reference path of the requested operation is set as the movement path (standing path 81) corresponding to the requested operation.
- sitting path 82 is set as the reference path (pattern N14 of fig. 7 ).
- the reference path of the requested operation is set as the movement path (sitting path 82) that does not correspond to the requested operation (standing operation).
- the requested operation is the sitting operation and the previous operation is the standing operation
- sitting path 82 is set as the reference path (pattern N22 in fig. 8 ).
- the reference path of the requested operation is set as the movement path (sitting path 82) corresponding to the requested operation.
- standing path 81 is set as the reference path (pattern N21 of fig. 8 ).
- the reference path of the requested operation is set as the movement path (standing path 82) that does not correspond to the requested operation (sitting operation).
- path setting section 62 selects a movement path that does not correspond to the requested operation and sets that movement path as the reference path in accordance with the current state of holding member 21 (pattern N14 of fig. 7 and pattern N21 of fig. 8 ). Accordingly, during subsequent operation, holding member 21, instead of being moved along the movement path corresponding to the requested operation, is moved along a movement path that does not correspond to the requested operation (that is, the movement path corresponding to the previous operation).
- Such control means that operation according to the desire of the operator is performed while considering safety based on the loaded state of the body weight of care receiver M with respect to holding member 21 and the like.
- holding member 21 is moved from the current position and the current angle along the reference path by control of driving control section 63. In this manner, assistance robot 1 moves holding member 21 along a movement path in accordance with various usage states, so as to assist a standing operation and a sitting operation of care receiver M.
- Assistance robot 1 is provided with: base 10, holding member 21 configured to hold an upper body of care receiver M; driving device 23 configured to move holding member 21 in an up-down direction and a left-right direction of base 10; and control device 60 configured to control operation of driving device 23.
- Control device 60 includes: memory section 61 configured to memorize standing path 81 that is a movement path of holding member 21 corresponding to a standing operation of care receiver M, and sitting path 82 that is a movement path of holding member 21 corresponding to a sitting operation of care receiver M, path setting section 62 configured to, in a case in which the standing operation or the sitting operation has been entered as a requested operation, select one of standing path 81 or sitting path 82 that corresponds to the requested operation, or one of standing path 81 or sitting path 82 that does not correspond to the requested operation, based on a usage state including current position Pc of holding member 21, and set the selected movement path as a reference path, and driving control section 63 configured to move holding member 21 based on the set reference path.
- the reference path is switched based on the current state of holding member 21.
- the movement path can be set in accordance with the current state of holding member 21, that is, the usage state of assistance robot 1. This allows care receiver M to be assisted in a standing operation or a sitting operation without any discomfort to care receiver M or an operator operating assistance robot 1.
- path setting section 62 when determining that the requested operation and the previous operation that moved holding member 21 to current position Pc are the same (S11: yes), sets the movement path of holding member 21 corresponding to the requested operation as the reference path regardless of the current state of holding member 21 (S15). If the previous state and the requested state as the same (S11: yes), for example, it can be assumed that it is being requested to perform the requested operation in stages.
- a movement path corresponding to the requested operation (standing path 81 if the requested operation is the standing operation; sitting path 82 if the requested operation is the sitting operation) is set as the reference path without switching the reference path based on the current state of holding member 21. Accordingly, the control processing load is reduced, and control can respond quickly to requests of the operator.
- memory section 61 also memorizes area information 73 representing multiple areas demarcated by specified position Pr of holding member 21 in at least one of the up-down direction and the front-rear direction with respect to base 10. Included in the multiple areas are standing priority area Ar in which standing path 81 is made the reference path, and sitting priority area As in which sitting path 82 is made the reference path.
- Path setting section 62 sets the reference path of the requested operation based on current position Pc of holding member 21 and area information 73. According to such a configuration, due to area information 73 being used in setting the reference path of the requested operation, the control processing load is reduced, and control can respond quickly to requests of the operator.
- driving device 23 includes raising and lowering section 30 that moves in an up-down direction with respect to base 10, and oscillating section 40 that moves holding member 21 with respect to raising and lowering section 30 in the front-rear direction of base 10, and rotates holding member 21 around an axis parallel to the left-right direction of base 10, such that holding member 21 is at an angle regulated with respect to the position of holding member 21 in the front-rear direction.
- Specified position Pr is a position of holding member 21 in the front-rear direction with respect to base 10 and is set based on the angle of holding member 21.
- standing priority area Ar is positioned to the rear of sitting priority area As. According to such a configuration, areas are appropriately demarcated, and care receiver M can be assisted in a standing operation and a sitting operation without care receiver M or an operator feeling discomfort.
- path setting section 62 selects one of standing path 81 or sitting path 82 based on the current position of holding member 21 and area information 73, and sets that path as the reference path of the requested operation (S14).
- path setting section 62 may be configured to set the reference path of the requested operation based on the angle included in the current state of holding member 21.
- the current angle of holding member is included in the current state of holding member 21.
- path setting section 62 sets the reference path of the requested operation based on at least one of current position Pc and the angle of holding member 21 included in the current state.
- the angle of holding member 21 may be acquired, for example, based on a detection result of an angle detecting apparatus on at an arm driving device that drives arm 42.
- path setting section 62 switches the reference path in accordance with the current angle of holding member 21.
- path setting section 62 switches the reference path in accordance with the current angle of holding member 21.
- specified position Pr that demarcates moving region Rn of holding member 21 is set based on the angle (specified angle ⁇ t) of holding member 21.
- specified position Pr may be configured to be set in addition to or instead of the angle of holding member 21. Accordingly, standing priority area Ar and sitting priority area As can be demarcated, for example, along a boundary line inclined with respect to the vertical axis.
- multiple specified positions, Pr1 and Pr2 may be set in the front-rear direction of holding member 21 to demarcate three areas.
- included in the multiple areas is intermediate area Am positioned between standing priority area Ar and sitting priority area As.
- specified positions Pr1 and Pr2 are positions in the front-rear direction of holding member 21 corresponding to, for example, first angle ⁇ t1 and second angle ⁇ t2 of holding member 21.
- intermediate area Am when holding member 21 is positioned in that area, may be an area for which path setting section 62 gives priority to setting the movement path of holding member 21 corresponding to the previous operation as the reference path.
- path setting section 62 gives priority to setting the movement path of holding member 21 corresponding to the previous operation as the reference path.
- a movement path (standing path 81) that does not correspond to the requested operation (sitting operation) is set as the reference path. According to such a configuration, compared to a case of demarcating two priority areas, it is possible to set the reference path in more detail in accordance with the current state.
- driving device 23 is configured from raising and lowering section 30 that moves in an up-down direction with respect to base 10, and oscillating section 40 that oscillates holding member 21.
- driving device 23 may come in various forms so long as it supports holding member 21 to be movable with respect to the up-down direction and the front-rear direction of the base, and moves holding member 21 along multiple different movement paths.
- oscillating section 40 in addition to rotating arm 42 and rotating oscillation main body 41 around an axis while moving oscillation main body 41 in the front-rear direction, for example, may be configured to support oscillation main body 41 by a rail inclined in the front-rear direction on an upper section of raising and lowering section 30. With such a configuration, due to the movement of oscillation main body 41 along the rail, it is possible to move holding member 21 attached to oscillation main body 41 in the front-rear direction and to make holding member 21 inclined.
- driving device 23 may be configured from a rotation member provided on base 10 that rotates around an axis that is parallel to the left-right direction, and an extending arm that is provided on the rotation member and is extendable in the diameter direction of the rotation member. Also, driving device 23 may be configured including a first rotation member that rotates around a shaft parallel to the left-right direction, and a second rotation member that is provided on the first rotation member and that rotates around an axis parallel to the rotation axis of the first rotation member.
- holding member 21 is able to move in the up-down direction and the front-rear direction of base 10, and is able to move in accordance with multiple movement paths. Also, when moving holding member 21 along multiple movement paths, by setting the reference path of the requested operation based on the current state of holding member 21, similar effects to the main embodiment are achieved.
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Invalid Beds And Related Equipment (AREA)
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Description
- The present invention relates to an assistance robot.
-
Patent literature 1 discloses an assistance robot that appropriately moves a holding member that holds a care receiver to assist the care receiver in a standing operation and a sitting operation. With such an assistance robot, it is desirable to appropriately position the holding member so as not to cause the care receiver discomfort. The assistance robot ofpatent literature 1 is provided with different movement paths that each correspond to the standing operation and the sitting operation. Thus, by entering a standing operation or a sitting operation as a requested operation, the assistance robot performs control of the position of the holding member based on a movement path corresponding to the requested operation. - Patent literature 1: International publication
WO2014/122752 - However, with the assistance robot, depending on the current position of the holding member and how the body weight of the care receiver is positioned with respect to the holding member, there may be cases in which the movement path is not set appropriately for the required operation. Thus, an assistance robot that moves a holding member on an appropriate movement path in accordance with the usage state is desired. The
WO2015011837 discloses an assistance robot having a base, a holding member, a driving device and a driving control section. The trajectory can be corrected based on the foot position of the care receiver. - The present invention takes account of such problems, and an object thereof is to provide an assistance robot that assists standing and sitting operations of a care receiver by moving a holding member on a movement path in accordance with a usage state.
- The assistance robot of
claim 1 is provided with: a base, a holding member configured to hold an upper body of a care receiver; a driving device configured to move the holding member in an up-down direction and a left-right direction of the base; and a control device configured to control operation of the driving device. The control device includes: a memory section configured to memorize a standing path that is a movement path of the holding member corresponding to a standing operation of the care receiver, and a sitting path that is a movement path of the holding member corresponding to a sitting operation of the care receiver; a path setting section configured to, in a case in which the standing operation or the sitting operation has been entered as a requested operation, select one of the standing path or the sitting path that corresponds to the requested operation, or one of the standing path or the sitting path that does not correspond to the requested operation, based on a usage state including a current position of the holding member, and set the selected movement path as a reference path; and a driving control section configured to move the holding member based on the set reference path. - According to the configuration of the invention of
claim 1, the reference path is switched based on the current state of the holding member. In other words, for the reference path of the requested operation, as well as a movement path corresponding to the requested operation being set, a movement path that does not correspond to the requested operation may be set. Specifically, there are cases in which a holding member that moves based on the reference path is moved based on the sitting path instead of the standing path even though the standing operation was requested, and cases in which the holding member that moves based on the reference path is moved based on the standing path instead of the sitting path even though the sitting operation was requested - Thus, compared to a case in which the movement path is always selected according to the requested operation, the movement path can be set in accordance with the current state of the holding member, that is, the usage state of the assistance robot. This allows a care receiver to be assisted in a standing operation or a sitting operation without any discomfort to the care receiver or an operator operating the assistance robot.
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Fig. 1
Fig. 1 is a perspective view from the rear side of an assistance robot that is an embodiment of the present disclosure. -
Fig. 2
Fig. 2 shows the configuration of the assistance robot and a care receiver in a sitting posture. -
Fig. 3
Fig. 3 shows the configuration of the assistance robot and a care receiver in a standing posture. -
Fig. 4
Fig. 4 is a block diagram showing a control device and controller of the assistance robot. -
Fig. 5
Fig. 5 illustrates a movement path of the holding member and the angle of the holding member with respect to the position of the holding member. -
Fig. 6
Fig. 6 is a flowchart illustrating reference path setting processing. -
Fig. 7
Fig. 7 is a table showing reference path patterns set when the standing switch is pushed. -
Fig. 8
Fig. 8 is a table showing reference path patterns set when the sitting switch is pushed. -
Fig. 9
Fig. 9 illustrates a movement path of the holding member and the angle of the holding member with respect to the position of the holding member of an alternative embodiment. -
Assistance robot 1 assists standing of care receiver M (shown infigs. 2 and 3 ) from a sitting posture to a standing posture and assists sitting from standing posture to a sitting posture. By supporting the upper body of care receiver M in a standing posture,assistance robot 1 can be maneuvered by only one caregiver such that care receiver M can be moved, for example, to a target location in a care facility. Note that, a "standing posture" means a state in which at least the lower half of care receiver M is upright; it does not necessarily refer to a state in which the upper half of care receiver M is upright. - As shown in
figs. 1 and4 ,assistance robot 1 is provided withbase 10, supportingdevice 20,controller 50, andcontrol device 60. In descriptions below, as shown infig. 1 , the front-rear, left-right, and up-down directions are as seen by care receiver M. Base 10 is configured to allow care receiver M to get on and to move in a front-rear direction and a left-right direction while care receiver M is onbase 10. As shown infigs. 1 and2 ,base 10 is provided withframe 11,support column 12,footrest 13,fixed cover 14, andmultiple wheels 15. -
Frame 11 ofbase 10 is positioned slightly above floor surface 2 (floor or ground) and is substantially horizontal with respect to floor surface 2.Support column 12 is fixed toframe 11 and stands upright on an upper front surface offrame 11.Support column 12 is arranged centrally in the left-right direction towards the front offrame 11. Note that, in the present embodiment,assistance robot 1 includes onesupport column 12, but two ormore support columns 12 may be provided. -
Footrest 13 is fixed to a rear upper surface offrame 11 for care receiver M to load their feet on.Contact marks 13a for the feet of care receiver M are provided on an upper surface offootrest 13.Contact marks 13a act as a foot positioning guide for care receiver M. As shown infig. 1 , fixedcover 14 is fixed toframe 11 orsupport column 12. Fixedcover 14 covers the range of a lower portion of raising and loweringmain body 31 of raising and loweringsection 30 indriving device 23, which is described later, and protects the inside ofdriving device 23.Multiple wheels 15 are provided onbase 10 andsupport base 10 to be movable with respect to floor surface 2. - Supporting
device 20 is provided onbase 10 and is configured to support care receiver M in a standing posture (refer tofig. 3 ). In the present embodiment, supportingdevice 20 includes holdingmember 21, lowerlimb contacting section 22, anddriving device 23.Holding member 21 holds the upper body of care receiver M. In the present embodiment, holdingmember 21 is provided withtorso receiving section 21a that contacts the torso of care receiver M andunderarm receiving sections 21b that support the underarms of care receiver M. Note that, holdingmember 21 may be provided with only one oftorso receiving section 21a andunderarm receiving sections 21b. - Torso receiving
section 21a supports the torso of care receiver M from below.Torso receiving section 21a has a wide surface and is made of a cushion material.Torso receiving section 21a is formed to have an initial shape that matches that of a typical care receiver M, and is flexible to change shape to match the torso of each individual care receiver M. In the present embodiment,torso receiving section 21a contacts care receiver M from the chest to the abdomen. - Underarm receiving
sections 21b are formed to have an arc shape and are provided on the right and left sides oftorso receiving section 21a such that the arc opening faces upward. Underarm receivingsections 21b support the underarms of care receiver M from below so as to support the upper body of care receiver M. Further, underarm receivingsections 21b regulate forward and rearward movement of care receiver M by sandwiching both underarm portions of care receiver M from the front and rear. Accordingly,torso receiving section 21a andunderarm receiving sections 21b regulate the shoulder position of care receiver M being held by holdingmember 21. - Lower
limb contacting section 22 contacts a front portion (shin or knee) of the lower limbs of care receiver M in a sitting posture, thereby helping to decide the position and posture of the lower body of care receiver M in a sitting posture. In particular, the positions of the legs are decided to a certain extent. Lowerlimb contacting section 22 is fixed to supportcolumn 12 ofbase 10. Lowerlimb contacting section 22 is provided with twosupport members 22a and lower limb contactingmain body 22b. -
Support members 22a are L-shaped. One end of the L shape ofsupport member 22a is fixed to supportcolumn 12, and the other end of the L shape ofsupport member 22a is positioned to the rear ofsupport column 12. Lower limb contactingmain body 22b is fixed to the other end ofsupport member 22a and is positioned to the rear of raising and loweringcover 33 and belowoscillation support section 32. Lower limb contactingmain body 22b is a portion for contacting the front of the lower limbs of care receiver M, has a wide surface, and is formed of a cushion material. - Driving
device 23supports holding member 21 to be movable with respect to the up-down direction and the front-rear direction ofbase 10, and moves holdingmember 21 along multiple different movement paths. In the present embodiment, drivingdevice 23 includes raising and loweringsection 30 and oscillatingsection 40. Raising and loweringsection 30 moves in the up-down direction with respect tobase 10. Raising and loweringsection 30 is provided with raising and loweringmain body 31,oscillation support section 32, and raising and loweringcover 33. - As shown in
fig. 2 , raising and loweringmain body 31 is formed elongated in the up-down direction. Raising and loweringmain body 31 is provided on a rear surface ofsupport column 12 to be movable linearly in the up-down direction. Raising and loweringmain body 31 is guided by a guide (not shown) on the rear surface ofsupport column 12, and is driven by a linear motion device (not shown). Raising and loweringmain body 31 is enclosed byfixed cover 14.Oscillation support section 32 is provided on an upper end side of raising and loweringmain body 31 and includesoscillating shaft center 32a that is parallel to the left-right direction. - As shown in
fig. 1 , raising and loweringcover 33 is fixed to raising and loweringsection 30 and encloses raising and loweringmain body 31 andoscillation support section 32. Further, raising and loweringcover 33 enclosessupport column 12 and fixedcover 14. Note that, in the present embodiment,assistance robot 1 includes one raising and loweringsection 30 with respect to onesupport column 12. However, in a case where two ormore support columns 12 are provided, a quantity of raising and loweringsections 30 may be provided corresponding to the quantity ofsupport columns 12. - Oscillating
section 40moves holding member 21 with respect to raising and loweringsection 30 in the front-rear direction ofbase 10, and rotates holdingmember 21 around an axis parallel to the left-right direction ofbase 10. Oscillatingsection 40 is provided with oscillationmain body 41,arm 42, andgrip 43. Oscillationmain body 41 is removably attached totorso receiving section 21a of holdingmember 21. -
Arm 40 is provided to rotate around oscillatingshaft center 32a ofoscillation support section 32 of raising and loweringsection 30.Arm 42 is rotated by an arm driving device (not shown). Whenassistance robot 1 performs standing assistance,arm 42 pivots forwards from a state extending to the rear. On the other hand, whenassistance robot 1 is performing sitting assistance,arm 42 pivots rearwards to a state extending to the rear. -
Grip 43 is U-shaped as seen from the front-rear direction, and both ends of the U shape ofgrip 43 are fixed to oscillationmain body 41. The center section ofgrip 43 is positioned to the front oftorso receiving section 21a and oscillationmain body 41 and is gripped by care receiver M who is being held by holdingmember 21. Also,grip 43 is used when a caregiver is pullingassistance robot 1 and so on. - According to the above configuration, oscillating
section 40 rotates holdingmember 21 attached to oscillationmain body 41 on the front end ofarm 42 around an axis (oscillatingshaft center 32a) parallel to the left-right direction ofbase 10. Oscillatingsection 40, by rotating holdingmember 21, oscillates holdingmember 21 to be at an angle regulated with respect to the position of holdingmember 21 in the front-rear direction. -
Controller 50 is an input device for receiving inputs by an operator (caregiver or care receiver M). In the present embodiment, as shown infig. 4 ,controller 50 includes standingswitch 51, sittingswitch 52, raisingswitch 53, and loweringswitch 54. Standingswitch 51 receives an instruction for an operation request of a standing operation for assisting care receiver M to a standing posture from the current state including the current position and current angle of holdingmember 21. Sittingswitch 52 receives an instruction for an operation request of a sitting operation for assisting care receiver M to a sitting posture from the current state of holdingmember 21. - Raising
switch 53 receives an instruction for an operation request for a raising operation for raising holdingmember 21 from the current position. Loweringswitch 54 receives an instruction for an operation request for a lowering operation for lowering holdingmember 21 from the current position.Controller 50 is connected to controldevice 60 such that communication is possible, and in a case in which only one of the switches is pushed, sends the operation corresponding to the pushed switch as an operation request to controldevice 60. -
Control device 60 controls operation of drivingdevice 23 such that holdingmember 21 is lowered and raised and oscillated in accordance with the operation request sent fromcontroller 50.Control device 60 is fixed to frame 11 ofbase 10 to the side ofsupport column 12.Control device 60 includesmemory section 61,path setting section 62, and drivingcontrol section 63.Memory section 61 memorizes standingoperation data 71 and sittingoperation data 72. - Standing
operation data 71 is two-dimensional coordinate data representing standing path 81 (refer tofig. 5 ) that is a movement path of holdingmember 21 corresponding to standing operation of a care receiver M. Sittingoperation data 72 is two-dimensional coordinate data representing sitting path 82 (refer tofig. 5 ) that is a movement path of holdingmember 21 corresponding to sitting operation of a care receiver M. The origin point of the two-dimensional coordinate data may be a given reference point in the moving range of holdingmember 21, or the position of the center of gravity ofassistance robot 1. - Here, standing
path 81 and sittingpath 82 of holdingmember 21, for example, are paths along which a reference point of holdingmember 21 is moved by operation of drivingdevice 23. Specifically, as shown infig. 5 , standingpath 81 is a curved path from first position P1 to second position P2. Also, sittingpath 82 is a path configured from a curved path from second position P2 to third position P3 and a straight path from third position P3 to first position P1. -
Path setting section 62, in a case in which a standing operation or a sitting operation is input as an operation request, sets either of standingpath 81 or sittingpath 82 as a reference path based on the current state including the current position of holdingmember 21. Drivingcontrol section 63moves holding member 21 based on the set reference path. Specifically, drivingcontrol section 63 synchronizes operation of raising and loweringsection 30 and oscillatingsection 40 and controls operation of drivingdevice 23 such that holdingmember 21 is moved along the reference path. - According to such a configuration,
control device 60, for example, in a case in which sittingswitch 52 ofcontroller 50 is pushed, controls movement of holdingmember 21 along standingpath 81 in addition to controlling movement of holdingmember 21 along sittingpath 82. Similarly, this applies when standingswitch 51 ofcontroller 50 is pushed. In this manner, the purpose of executing operation processing of holdingmember 21 based a movement path not corresponding to the requested operation is so that holdingmember 21 is moved along a movement path corresponding to the usage state ofassistance robot 1. - In detail,
path setting section 62, in a case in which standingswitch 51 or sittingswitch 52 is pushed so as to input a requested operation, sets the reference path of the requested operation based on at least one of the current position and the current angle of holdingmember 21 that are included in the current state of holdingmember 21. In the present embodiment,path setting section 62 sets the reference path of the requested operation based on the current position of holdingmember 21 and area information 73 memorized inmemory section 61. - The above area information 73 represents multiple areas demarcated by a specified position of holding
member 21 in at least one of the up-down direction and the front-rear direction with respect tobase 10. In the present embodiment, as shown infig. 5 , specified position Pr is a position of holdingmember 21 in the front-rear direction with respect tobase 10 and is set based on the angle of holdingmember 21. - Here, driving
device 23 of the embodiment is configured to move holdingmember 21 in the front-rear direction and to rotate holdingmember 21 aroundoscillation shaft center 32a by rotatingarm 42 of oscillatingsection 40. That is, as shown in the lower section offig. 5 , oscillatingsection 40 oscillates holdingmember 21 to be at an angle θ regulated with respect to the position of holdingmember 21 in the front-rear direction. As shown infigs. 2 and 3 , angle θ of holdingmember 21 is an angle with respect to a vertical axis, and increases as holdingmember 21 moves forward. - Also, for care receiver M being held by holding
member 21, when holdingmember 21 has been rotated by a certain amount, the buttock portion Mb of the care receiver M is raised from the seat of chair and their body weight is leaning towards supportingdevice 20. In the embodiment, the position of holdingmember 21 in the front-rear direction corresponding to specified angle θt of holdingmember 21 in the above state is set as the above specified position Pr. Included in the multiple areas represented by area information 73 are standing priority area Ar and sitting priority area As generated by demarcating the moving region Rn of holdingmember 21 in the front-rear direction via specified position Pr. - Standing priority area Ar is an area for which
path setting section 62 gives priority to setting standingpath 81 as the reference path in a case in which holdingmember 21 is positioned in that area. Standing priority area As is an area for whichpath setting section 62 gives priority to setting sittingpath 82 as the reference path in a case in which holdingmember 21 is positioned in that area. As shown infig. 5 , standing priority area Ar is positioned to the rear of sitting priority area As. - Reference path setting processing by
path setting section 62 ofcontrol device 60 is described below with reference tofigs. 5 to 8 . Reference path setting processing is executed when, for example, standingswitch 51 or sittingswitch 52 ofcontroller 60 is pushed so as to input a standing operation or a sitting operation as a requested operation. Note that, when raisingswitch 53 or loweringswitch 54 ofcontroller 50 are pushed, because operation of raising and loweringsection 30 is controlled without using the reference path, reference path setting processing is not executed. - As shown in
fig. 6 ,path setting section 62 ofcontrol device 60, first, determines whether the requested operation and the previous operation that moved holdingmember 21 to the current position are the same (step 11 [hereinafter, "step" is abbreviated to "S"]). For this,path setting section 62 acquires information representing the previous operation that is temporarily memorized inmemory section 61. This information includes, as the previous operation, a standing operation, a sitting operation, a raising operation, and a lowering operation. Also, in a case in which information representing the previous operation is not memorized,path setting section 62 determines that the power switch (not shown) has just been turned on, and that the previous operation was turning on the power. -
Path setting section 62, when determining that the previous operation and the requested operation are the same (S11: yes), sets the movement path of holdingmember 21 corresponding to the requested operation as the reference path regardless of the current state of holding member 21 (S15). Then, the same operation as the previous operation is restarted by controlling drivingcontrol section 63. This operation assumes a case in which, for example, an operator released standingswitch 51 during standing operation, and then pushed standingswitch 51 again (patterns N11 and N12 infig. 7 ). - Or, similarly, this assumes a case in which an operator released sitting
switch 52 during sitting operation, and then pushed sittingswitch 52 again (patterns N23 and N24 infig. 8 ). Note that, in the furthest right column offigs. 7 and8 , the movement path of the previous operation that moved holdingmember 21 to the current position Pc is shown by a thick dashed arrow, whereas the movement path of the requested operation from current position Pc based on the reference path is shown by a thick solid arrow. - On the other hand, if the previous operation and the requested are different (S11: no),
path setting section 62, based on the information representing the previous operation, determines whether the previous operation was any of the raising operation, the lowering operation, or turning on the power (S12). If the previous action is determined to be one of the raising operation, the lowering operation, or turning on the power (S12: yes),path setting section 62 sets the movement path of holdingmember 21 corresponding to the requested operation as the reference path regardless of the current state of holdingmember 21. Then, holdingmember 21 is moved from the current position and the current angle along the reference path corresponding to the requested operation by control of driving control section 63 (patterns N15 and N16 infig. 7 and patterns N25 and N26 infig. 8 ). -
Path setting section 62, in a case in which the previous is none of the raising operation, the lowering operation, or turning on the power (S12: no), that is, the requested operation is the standing operation and the previous operation was the sitting operation, or the requested operation was the sitting operation and the previous operation was the standing operation, acquires the current state of holding member 21 (S13). In the embodiment,path setting section 62 acquires current position Pc of holdingmember 21 as the current state. - Continuing,
path setting section 62 selects one of standingpath 81 or sittingpath 82 based on the current position of holdingmember 21 and area information 73, and sets that path as the reference path of the requested operation (S14). Specifically, if the area to which current position Pc of holdingmember 21 belongs is standing priority area Ar, standingpath 81 is set as the reference path of the requested operation. On the other hand, if the area to which current position Pc of holdingmember 21 belongs is sitting priority area As, sittingpath 82 is set as the reference path of the requested operation. - In other words, if the requested operation is the standing operation and the previous operation is the sitting operation, if the area to which current position Pc belongs is standing priority area Ar, standing
path 81 is set as the reference path (pattern N13 infig. 7 ). As a result, similar to S15, the reference path of the requested operation is set as the movement path (standing path 81) corresponding to the requested operation. On the other hand, if the area to which current position Pc belongs is the sitting priority area As, sittingpath 82 is set as the reference path (pattern N14 offig. 7 ). As a result, the reference path of the requested operation is set as the movement path (sitting path 82) that does not correspond to the requested operation (standing operation). - Further, if the requested operation is the sitting operation and the previous operation is the standing operation, if the area to which current position Pc belongs is sitting priority area As, sitting
path 82 is set as the reference path (pattern N22 infig. 8 ). As a result, similar to S15, the reference path of the requested operation is set as the movement path (sitting path 82) corresponding to the requested operation. On the other hand, if the area to which current position Pc belongs is the standing priority area Ar, standingpath 81 is set as the reference path (pattern N21 offig. 8 ). As a result, the reference path of the requested operation is set as the movement path (standing path 82) that does not correspond to the requested operation (sitting operation). - As described above,
path setting section 62 selects a movement path that does not correspond to the requested operation and sets that movement path as the reference path in accordance with the current state of holding member 21 (pattern N14 offig. 7 and pattern N21 offig. 8 ). Accordingly, during subsequent operation, holdingmember 21, instead of being moved along the movement path corresponding to the requested operation, is moved along a movement path that does not correspond to the requested operation (that is, the movement path corresponding to the previous operation). Such control means that operation according to the desire of the operator is performed while considering safety based on the loaded state of the body weight of care receiver M with respect to holdingmember 21 and the like. - After reference path setting processing has been performed, holding
member 21 is moved from the current position and the current angle along the reference path by control of drivingcontrol section 63. In this manner,assistance robot 1moves holding member 21 along a movement path in accordance with various usage states, so as to assist a standing operation and a sitting operation of care receiver M. -
Assistance robot 1 is provided with:base 10, holdingmember 21 configured to hold an upper body of care receiver M; drivingdevice 23 configured to move holdingmember 21 in an up-down direction and a left-right direction ofbase 10; andcontrol device 60 configured to control operation of drivingdevice 23.Control device 60 includes:memory section 61 configured to memorize standingpath 81 that is a movement path of holdingmember 21 corresponding to a standing operation of care receiver M, and sittingpath 82 that is a movement path of holdingmember 21 corresponding to a sitting operation of care receiver M,path setting section 62 configured to, in a case in which the standing operation or the sitting operation has been entered as a requested operation, select one of standingpath 81 or sittingpath 82 that corresponds to the requested operation, or one of standingpath 81 or sittingpath 82 that does not correspond to the requested operation, based on a usage state including current position Pc of holdingmember 21, and set the selected movement path as a reference path, and drivingcontrol section 63 configured to move holdingmember 21 based on the set reference path. - According to such a configuration, the reference path is switched based on the current state of holding
member 21. Thus, compared to a case in which the movement path is always selected according to the requested operation, the movement path can be set in accordance with the current state of holdingmember 21, that is, the usage state ofassistance robot 1. This allows care receiver M to be assisted in a standing operation or a sitting operation without any discomfort to care receiver M or an operatoroperating assistance robot 1. - Also,
path setting section 62, when determining that the requested operation and the previous operation that moved holdingmember 21 to current position Pc are the same (S11: yes), sets the movement path of holdingmember 21 corresponding to the requested operation as the reference path regardless of the current state of holding member 21 (S15). If the previous state and the requested state as the same (S11: yes), for example, it can be assumed that it is being requested to perform the requested operation in stages. Here, in such a case, a movement path corresponding to the requested operation (standingpath 81 if the requested operation is the standing operation; sittingpath 82 if the requested operation is the sitting operation) is set as the reference path without switching the reference path based on the current state of holdingmember 21. Accordingly, the control processing load is reduced, and control can respond quickly to requests of the operator. - Further,
memory section 61 also memorizes area information 73 representing multiple areas demarcated by specified position Pr of holdingmember 21 in at least one of the up-down direction and the front-rear direction with respect tobase 10. Included in the multiple areas are standing priority area Ar in which standingpath 81 is made the reference path, and sitting priority area As in which sittingpath 82 is made the reference path.Path setting section 62 sets the reference path of the requested operation based on current position Pc of holdingmember 21 and area information 73. According to such a configuration, due to area information 73 being used in setting the reference path of the requested operation, the control processing load is reduced, and control can respond quickly to requests of the operator. - Further, driving
device 23 includes raising and loweringsection 30 that moves in an up-down direction with respect tobase 10, and oscillatingsection 40 that moves holdingmember 21 with respect to raising and loweringsection 30 in the front-rear direction ofbase 10, and rotates holdingmember 21 around an axis parallel to the left-right direction ofbase 10, such that holdingmember 21 is at an angle regulated with respect to the position of holdingmember 21 in the front-rear direction. Specified position Pr is a position of holdingmember 21 in the front-rear direction with respect tobase 10 and is set based on the angle of holdingmember 21. When setting the reference path of the requested operation, one indicator is the posture of care receiver M, in particular, to what extent buttock portion Mb of care receiver M is raised fromseat 91. Here, during operation ofassistance robot 1, if holdingmember 21 holding care receiver M is rotated by a specified angle or greater, buttock portion Mb of care receiver M will be raised fromseat 91. With regard to this, by setting specified position Pr to demarcate areas based on the angle of holdingmember 21 as described above, it is possible to appropriately demarcate areas, and care receiver M can be assisted in a standing operation and a sitting operation without care receiver M or an operator feeling discomfort. - Further, standing priority area Ar is positioned to the rear of sitting priority area As. According to such a configuration, areas are appropriately demarcated, and care receiver M can be assisted in a standing operation and a sitting operation without care receiver M or an operator feeling discomfort.
- In the embodiment above,
path setting section 62 selects one of standingpath 81 or sittingpath 82 based on the current position of holdingmember 21 and area information 73, and sets that path as the reference path of the requested operation (S14). However,path setting section 62 may be configured to set the reference path of the requested operation based on the angle included in the current state of holdingmember 21. - In such a configuration, the current angle of holding member is included in the current state of holding
member 21. Also, in a case in which a requested operation has been input,path setting section 62 sets the reference path of the requested operation based on at least one of current position Pc and the angle of holdingmember 21 included in the current state. The angle of holdingmember 21 may be acquired, for example, based on a detection result of an angle detecting apparatus on at an arm driving device that drivesarm 42. - According to such a configuration,
path setting section 62 switches the reference path in accordance with the current angle of holdingmember 21. Thus, by setting the reference path according to the angle of holdingmember 21 in addition to current position Pc of holdingmember 21, it is possible to perform a more detailed setting. Further, by setting the reference path according to the angle of holdingmember 21 in addition to current position Pc of holdingmember 21, it is possible to set the reference path in accordance with the posture of care receiver M. - In the above embodiment specified position Pr that demarcates moving region Rn of holding
member 21 is set based on the angle (specified angle θt) of holdingmember 21. However, specified position Pr may be configured to be set in addition to or instead of the angle of holdingmember 21. Accordingly, standing priority area Ar and sitting priority area As can be demarcated, for example, along a boundary line inclined with respect to the vertical axis. - Also, as shown in
fig. 9 , multiple specified positions, Pr1 and Pr2, may be set in the front-rear direction of holdingmember 21 to demarcate three areas. In this configuration, included in the multiple areas is intermediate area Am positioned between standing priority area Ar and sitting priority area As. Here, as shown in the lower section offig. 9 , specified positions Pr1 and Pr2 are positions in the front-rear direction of holdingmember 21 corresponding to, for example, first angle θt1 and second angle θt2 of holdingmember 21. - Further, intermediate area Am, when holding
member 21 is positioned in that area, may be an area for whichpath setting section 62 gives priority to setting the movement path of holdingmember 21 corresponding to the previous operation as the reference path. According to such a configuration, for example, in a case in which the requested operation is the standing operation and the previous operation is the sitting operation, if the area to which current position Pc belongs is intermediate area Am, a movement path (sitting path 82) that does not correspond to the requested operation (standing operation) is set as the reference path. - Similarly, in a case in which the requested operation is the sitting operation and the previous operation is the standing operation, if the area to which current position Pc belongs is intermediate area Am, a movement path (standing path 81) that does not correspond to the requested operation (sitting operation) is set as the reference path. According to such a configuration, compared to a case of demarcating two priority areas, it is possible to set the reference path in more detail in accordance with the current state.
- In the above embodiment, driving
device 23 is configured from raising and loweringsection 30 that moves in an up-down direction with respect tobase 10, and oscillatingsection 40 that oscillates holdingmember 21. However, drivingdevice 23 may come in various forms so long as it supports holdingmember 21 to be movable with respect to the up-down direction and the front-rear direction of the base, and moves holdingmember 21 along multiple different movement paths. - Specifically, oscillating
section 40, in addition to rotatingarm 42 and rotating oscillationmain body 41 around an axis while moving oscillationmain body 41 in the front-rear direction, for example, may be configured to support oscillationmain body 41 by a rail inclined in the front-rear direction on an upper section of raising and loweringsection 30. With such a configuration, due to the movement of oscillationmain body 41 along the rail, it is possible to move holdingmember 21 attached to oscillationmain body 41 in the front-rear direction and to make holdingmember 21 inclined. - Further, driving
device 23 may be configured from a rotation member provided onbase 10 that rotates around an axis that is parallel to the left-right direction, and an extending arm that is provided on the rotation member and is extendable in the diameter direction of the rotation member. Also, drivingdevice 23 may be configured including a first rotation member that rotates around a shaft parallel to the left-right direction, and a second rotation member that is provided on the first rotation member and that rotates around an axis parallel to the rotation axis of the first rotation member. - According to such a configuration, by holding
member 21 being attached to the extending arm or the second rotation member, holdingmember 21 is able to move in the up-down direction and the front-rear direction ofbase 10, and is able to move in accordance with multiple movement paths. Also, when moving holdingmember 21 along multiple movement paths, by setting the reference path of the requested operation based on the current state of holdingmember 21, similar effects to the main embodiment are achieved. -
- 1: assistance robot; 2: floor surface;
- 10: base;
- 11: frame; 12: support column;
- 13: footrest; 13a: contact mark;
- 14: fixed cover; 15: wheel;
- 20: supporting device;
- 21: holding member; 21a: torso receiving section; 21b: underarm receiving section; 22: lower limb contacting section; 22a: support member; 22b; lower limb contacting main body; 23: driving device;
- 30: raising and lowering section;
- 31: raising and lowering main body; 32: oscillation support section; 32a: oscillating shaft center; 33: raising and lowering cover;
- 40: oscillating section;
- 41: oscillation main body; 42: arm; 43: grip;
- 21: holding member; 21a: torso receiving section; 21b: underarm receiving section; 22: lower limb contacting section; 22a: support member; 22b; lower limb contacting main body; 23: driving device;
- 50: controller;
- 51: standing switch; 52: sitting switch;
- 53: raising switch; 54: lowering switch;
- 60: control device;
- 61: memory section; 62: path setting section; 63: driving control section;
- 71: standing operation data; 72: sitting operation data; 73: area information;
- 10: base;
- 81: standing path; 82: sitting path;
- 90: chair; 91: seat;
- Rn: moving range (of holding member);
- Ar: standing priority area; As: sitting priority area; Am: intermediate area;
- M: care receiver; Mb: buttock portion (of care receiver)
- P1: first position; P2: second position; P3: third position;
- Pc: current position (of holding member); Pr: specified position;
- θ: angle (of holding member); θt: specified angle (of holding member);
- θt1: first angle (of holding member); θt2: second angle (of holding member);
- N11 to N16: operation patterns when standing
switch 51 is pushed; - N21 to N26: operation patterns when sitting
switch 52 is pushed
Claims (7)
- An assistance robot (1) comprising:a base (10);a holding member (21) configured to hold an upper body of a care receiver (M);a driving device (23) configured to move the holding member (21) in an up-down direction and a left-right direction of the base (10); anda control device (60) configured to control operation of the driving device (23), the control device (60) includinga memory section (61) configured to memorize a standing path (81) that is a movement path of the holding member (21) corresponding to a standing operation of the care receiver (M), and a sitting path (82) that is a movement path of the holding member (21) corresponding to a sitting operation of the care receiver (M),a path setting section (62) configured to, in a case in which the standing operation or the sitting operation has been entered as a requested operation, select one of the standing path (81) or the sitting path (82) that corresponds to the requested operation, or one of the standing path (81) or the sitting path (82) that does not correspond to the requested operation, based on a usage state including a current position (Pc) of the holding member (21), and set the selected movement path as a reference path, anda driving control section (63) configured to move the holding member (21) based on the set reference path.
- The assistance robot according to claim 1, wherein
the driving device (23) is configured to rotate the holding member (21) around a shaft parallel to a left-right direction of the base (10),
a current angle (θ) of the holding member (21) is included in the current state of the holding member (21), and
the path setting section (62) is configured to, when the requested operation has been entered, set the reference path of the requested operation based on at least one of the current position (Pc) or the current angle (θ) of the holding member (21) included in the current state. - The assistance robot according to claim 1 or 2, wherein
the path setting section (62) is configured to, in a case in which the requested operation and the previous operation of moving the holding member (21) to the current position (Pc) are equal, set as the reference path a movement path of the holding member (21) corresponding to the requested operation regardless of the current state of the holding member (21). - The assistance robot according to any one of the claims 1 to 3, wherein
the memory section (61) is also configured to memorize area information (73) representing multiple areas demarcated by a specified position (Pr) of the holding member (21) in at least one of the up-down direction and the front-rear direction with respect to the base (10),
the multiple areas include a standing priority area for which the standing path (81) is made the reference path, and a sitting priority area for which the sitting path (82) is made the reference path, and
the path setting section (62) is configured to set the reference path of the requested operation based on the area information (73) and the current position (Pc) of the holding member (21). - The assistance robot according to claim 4, wherein
the driving device (23) includes
a raising and lowering section (30) configured to move in the up-down direction with respect to the base (10), and
an oscillating section (40) configured to move the holding member (21) in a front-rear direction of the base (10) with respect to the raising and lowering section (30) and to rotate the holding member (21) around an axis parallel to a left-right direction of the base (10), such that the holding member (21) is at an angle regulated with respect to the position of the holding member (21) in the front-rear direction, and
the specified position (Pr) is a position of the holding member (21) in the front-rear direction with respect to the base (10) and is set based on the angle (θ) of the holding member (21). - The assistance robot according to claim 5, wherein
the standing priority area is positioned to the rear of the sitting priority area. - The assistance robot according to any one of the claims 4 to 6, wherein
the multiple areas further include an intermediate area for which a movement path of the holding member (21) corresponding to a previous operation in which the holding member (21) was moved to the current position (Pc) is the reference path.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2016/054343 WO2017141336A1 (en) | 2016-02-15 | 2016-02-15 | Assistance robot |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3417842A1 EP3417842A1 (en) | 2018-12-26 |
EP3417842A4 EP3417842A4 (en) | 2019-06-26 |
EP3417842B1 true EP3417842B1 (en) | 2021-06-16 |
Family
ID=59625865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16890479.5A Active EP3417842B1 (en) | 2016-02-15 | 2016-02-15 | Assistance robot |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3417842B1 (en) |
JP (1) | JP6586474B2 (en) |
AU (1) | AU2016393481B2 (en) |
SG (1) | SG11201806237XA (en) |
WO (1) | WO2017141336A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210330528A1 (en) * | 2018-08-01 | 2021-10-28 | Fuji Corporation | Assistance system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5206393B2 (en) * | 2008-12-22 | 2013-06-12 | トヨタ自動車株式会社 | Transfer support device and control method of transfer support device |
JP5921228B2 (en) * | 2012-02-02 | 2016-05-24 | 富士機械製造株式会社 | Standing motion support robot |
US10166159B2 (en) * | 2013-02-07 | 2019-01-01 | Fuji Corporation | Care robot |
EP3025693B1 (en) * | 2013-07-26 | 2018-07-04 | Fuji Machine Mfg. Co., Ltd. | Assistance robot |
-
2016
- 2016-02-15 EP EP16890479.5A patent/EP3417842B1/en active Active
- 2016-02-15 JP JP2017567847A patent/JP6586474B2/en active Active
- 2016-02-15 WO PCT/JP2016/054343 patent/WO2017141336A1/en active Application Filing
- 2016-02-15 AU AU2016393481A patent/AU2016393481B2/en active Active
- 2016-02-15 SG SG11201806237XA patent/SG11201806237XA/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2017141336A1 (en) | 2017-08-24 |
JP6586474B2 (en) | 2019-10-02 |
AU2016393481A1 (en) | 2018-08-09 |
SG11201806237XA (en) | 2018-08-30 |
AU2016393481B2 (en) | 2019-05-02 |
EP3417842A1 (en) | 2018-12-26 |
JPWO2017141336A1 (en) | 2018-12-06 |
EP3417842A4 (en) | 2019-06-26 |
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