WO2014091760A1 - 車いす、及びそれと合体するベッド - Google Patents
車いす、及びそれと合体するベッド Download PDFInfo
- Publication number
- WO2014091760A1 WO2014091760A1 PCT/JP2013/007313 JP2013007313W WO2014091760A1 WO 2014091760 A1 WO2014091760 A1 WO 2014091760A1 JP 2013007313 W JP2013007313 W JP 2013007313W WO 2014091760 A1 WO2014091760 A1 WO 2014091760A1
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- WIPO (PCT)
- Prior art keywords
- armrest
- wheelchair
- bed
- unit
- seat surface
- Prior art date
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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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
-
- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/006—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs convertible to stretchers or beds
-
- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
-
- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/122—Rests specially adapted therefor, e.g. for the head or the feet for the back
-
- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms
-
- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/127—Rests specially adapted therefor, e.g. for the head or the feet for lower legs
-
- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet
-
- 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
- A61G7/05—Parts, details or accessories of beds
- A61G7/0507—Side-rails
- A61G7/0512—Side-rails characterised by customised length
- A61G7/0513—Side-rails characterised by customised length covering particular sections of the bed, e.g. one or more partial side-rail sections along the bed
-
- 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
- A61G7/16—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto converting a lying surface into a chair
-
- 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
- A61G7/16—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto converting a lying surface into a chair
- A61G7/165—Chair detachable from bed
-
- 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
- A61G2203/00—General characteristics of devices
- A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
- A61G2203/14—Joysticks
-
- 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
- A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
- A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/04—Force
- F04C2270/042—Force radial
- F04C2270/0421—Controlled or regulated
Definitions
- the present invention relates to a wheelchair having an armrest that can be expanded and retracted, and a bed that is combined with the wheelchair.
- Wheelchairs are used in the care of care recipients (hereinafter referred to as “caregivers”) such as elderly people or sick people.
- a manual wheelchair that is manually pushed from the back by a caregiver or an electric wheelchair that is self-propelled by an operation of the care recipient is used.
- These wheelchairs are provided with armrests for stable support of the arms.
- a wheelchair having a rotatable armrest has been proposed in order for a cared person to get on and off in the lateral direction of the wheelchair (see, for example, Patent Document 1).
- FIG. 8 is a schematic view showing a conventional wheelchair disclosed in Patent Document 1. As shown in FIG. 8
- the wheelchair 10 supports the carriage unit 11 that travels with wheels 11 a, the seat surface unit 12 that changes the sitting posture of the passenger (care recipient) 14 by changing the posture, and the back of the passenger 14.
- the armrest 13 is rotatably supported by the back support surface 12a.
- the armrest 13 can be retracted to the back support surface 12a side from the unfolded state of the armrest 13 shown in FIG. 8 by rotating around the rotating shaft 15.
- the rotation shaft 15 is an axis that is parallel to the back support surface 12 a and extends in the side surface direction of the wheelchair 10.
- This invention solves such a subject, and it aims at providing the wheelchair and bed combined with it which do not need to avoid an elbow and a shoulder of a passenger at the time of evacuation and deployment.
- the wheelchair of the present invention includes: A first seat surface portion having at least a first support portion having a back support surface on the surface; First and second armrests; A third drive unit that rotates the second armrest forward and backward about a first rotation axis to move the second armrest between the deployed position and a retracted position behind the first support unit; Prepared, The first rotation shaft is disposed on a plane perpendicular to the back support surface of the first seat surface portion and parallel to the front-rear direction of the first seat surface portion.
- the bed of the present invention includes the above-described wheelchair and a bed base unit that is combined with the wheelchair to form a bed.
- FIG. 1 is a schematic diagram showing the operation of an armrest in the first embodiment of the present invention
- FIG. 2 is a plan view showing the operation of the armrest in the first embodiment
- FIG. 3A is a perspective view showing the wheelchair in a state where the armrest is unfolded in the first embodiment
- FIG. 3B is a perspective view showing the wheelchair in a state in which the armrest is retracted in the first embodiment
- FIG. 3C is an explanatory view schematically showing the rotation operation of the armrest and the armrest support in the first embodiment.
- FIG. 4A is a schematic cross-sectional view showing an armrest structure by a virtual plane of a wheelchair in the first embodiment
- FIG. 4B is an explanatory diagram for explaining the length of the armrest support portion of the wheelchair in the first embodiment
- FIG. 5 is a flowchart of the wheelchair combining operation in the first embodiment.
- FIG. 6A is a perspective view of a wheelchair and a bed base in a state where the posture changing step in the first embodiment is completed
- FIG. 6B is a perspective view of the wheelchair and the bed base in a state where the adjacent step in the first embodiment is completed
- FIG. 6C is a flowchart of an operation procedure for automatically performing the armrest retracting step of the wheelchair in the first embodiment
- FIG. 6A is a perspective view of a wheelchair and a bed base in a state where the posture changing step in the first embodiment is completed
- FIG. 6B is a perspective view of the wheelchair and the bed base in a state where the adjacent step in the first embodiment is completed
- FIG. 6C
- FIG. 6D is a block diagram of a wheelchair control system in the first embodiment
- FIG. 7A is a perspective view of a wheelchair and a bed base in a state where the armrest retracting step in the first embodiment is completed
- FIG. 7B is a perspective view of the wheelchair and the bed base in a state where the bed deformation step in the first embodiment is completed
- FIG. 8 is a schematic view showing a conventional wheelchair.
- FIG. 1 is a schematic view showing the operation of the armrest in the first embodiment of the present invention.
- the bed 40 of the first embodiment includes a wheelchair 20 and a bed base 30.
- the bed 40 according to the first embodiment is configured by combining the wheelchair 20 with the bed base 30.
- the bed base unit 30 includes a first seat surface unit 31, a first operation unit 44, a first drive unit 42, and a first control unit 39.
- the first seat surface portion 31 is an example of a bed seat surface portion.
- the first operation unit 44 is an example of a bed operation unit.
- the first drive unit 42 is an example of a bed drive unit.
- the first drive unit 42 raises and lowers the first seat surface part by an operation at the first operation unit 44. Note that, in the state of the bed 40 in which the wheelchair 20 and the bed base 30 are combined, the first seat surface portion 31 and the second seat surface portion 22 described later are integrated into the first by the operation at the first operation portion 44.
- the posture is changed by the drive unit 42.
- the wheelchair 20 includes a carriage unit 21, a second seat surface unit 22, a first armrest 23, a second armrest 24, a second operation unit 41, a third drive unit 25, and a second control unit 36.
- the second seat surface portion 22 is an example of a wheelchair seat surface portion.
- the second operation unit 41 is an example of a wheelchair operation unit.
- the third drive unit 25 is an example of an armrest drive unit.
- the carriage unit 21 travels with wheels (not shown) and supports the second seat surface unit 22 thereon.
- a second drive unit 43 that is an example of a wheelchair drive unit is provided, and the wheel of the carriage unit 21 is driven by the second drive unit 43 by the operation of the second operation unit 41.
- the second seat surface portion 22 is a portion where the passenger sits down or leans (leans on).
- the second seat surface portion 22 has at least a first support portion 22b having a back support surface 22a on the surface, is supported by the carriage portion 21, and changes the seating posture of the occupant by changing the posture.
- the first support portion 22 b is an example of a back support portion of the wheelchair 20.
- the back support surface 22a is a surface that can support the back of the passenger as shown in FIGS. However, in FIG. 3A etc., the 2nd seat surface part 22 containing the 1st support part 22b etc. is illustrated as a bottom member which removed cushion members, such as a mat attached to the surface side.
- the second seat surface portion 22 has a second support portion 22c on which the passenger's buttocks are placed, a third support portion 22d that can support the passenger's legs, and the like. Yes.
- the second support portion 22 c is an example of a seat portion of the wheelchair 20.
- the third support portion 22d is an example of a leg support portion of the wheelchair 20.
- the first armrest 23 is one side portion (the right side portion in FIG. 1 and the like) of the first support portion 22 b, and the side portion opposite to the bed base portion 30 when combined with the bed base portion 30.
- the armrest is located at The first armrest 23 is rotatably supported by the first support portion 22b in the vertical plane.
- the second armrest 24 is the other side portion (the left side portion in FIG. 1 and the like) of the first support portion 22 b and is located on the side portion on the bed base portion 30 side when combined with the bed base portion 30. It is.
- the second armrest 24 is rotatably supported by the first support portion 22b.
- the 2nd armrest 24 shown in FIG. 1 is located in the expansion
- the second armrest 24 shown by a broken line in FIG. 2 is located at the retracted position 24b at the time of retracting.
- a third drive unit 25 connected to the base end of the second armrest 24 is disposed on the back side of the first support 22b.
- the third drive unit 25 is an example of an armrest drive unit.
- the second armrest 24 is connected to the third drive unit 25 at one end of an L-shaped member (L-shaped portion 35) that is a part of the second armrest 24. Accordingly, the second armrest 24 is rotated by about 180 ° between the deployed position 24a on the side of the first support 22b and the retracted position 24b on the back side of the first support 22b by driving the third drive 25. Move, deploy and evacuate. This forward / reverse rotation operation will be described in detail later.
- a curved arc shape as indicated by an arrow 26 is provided so that the second armrest 24 does not contact the elbow and shoulder of the occupant of the wheelchair 20.
- the second armrest 24 is moved along the trajectory. This trajectory is a path that moves while rotating backward so that the tip of the second armrest 24 moves away from the other side of the first support portion 22b and heads toward the retracted position 24b on the back surface of the first support portion 22b.
- the 2nd armrest 24 is expand
- the second armrest 24 in the first embodiment moves in a direction approaching the back surface of the first support portion 22b after moving in a direction away from the side portion of the first support portion 22b during the expansion and retraction thereof. Move to draw a large arc.
- Such movement of the second armrest 24 is particularly effective in the wheelchair 20 combined with the bed base 30 as in the first embodiment. This is because a passenger sitting on the second seat surface portion 22 of the wheelchair 20 as in the first embodiment is likely to be leaning toward the bed base portion 30 side. This is because the possibility of contact with the two armrests 24 is high.
- the second armrest 24 is retracted to the opposite side of the bed base portion 30 behind the first support portion 22b, so that the first rotation shaft 27 serving as the rotation center of the second armrest 24 is used.
- a virtual plane 28 that is a plane perpendicular to the back support surface 22a and parallel to the front-rear direction of the second seat surface part 22 (front-rear direction of the wheelchair 20).
- the second armrest 24 is at a predetermined angle with the back support surface 22a (in the first embodiment, for example, 10 ° to 170 °. As a specific example, 45 ° ).
- the second armrest 24 of the first embodiment is configured so that the upper surface of the second armrest 24 (the surface on which the occupant's arm is placed; The surface 24a-1) retreats while changing its posture in the vertical direction.
- the second armrest 24 By moving the second armrest 24 in this way, even if the occupant performs the retreating operation of the second armrest 24 with the arm placed on the arm placement surface 24a-1, the occupant's arm is mounted on the arm. It slides down on the knee or thigh from the placement surface 24a-1. Therefore, in the retracting operation of the second armrest 24, the possibility that the passenger's arm is sandwiched between the second armrest 24 and another member is low, and it is safe.
- the retracting operation of the second armrest 24 eliminates the need for the passenger not only to avoid the shoulder but also to lower the arm from the arm placement surface 24a-1 of the second armrest 24.
- the third drive unit 25 can be configured with a single-axis motor, and the second support unit 22b can be configured on the back surface of the first support unit 22b with a simple configuration.
- a configuration for retracting the armrest 24 can be realized. Note that at the deployment position 24a projecting forward, the arm placement surface 24a-1 of the second armrest 24 is disposed along the horizontal direction or has an inclination angle of about 90 ° with respect to the back support surface 22a. Become. On the other hand, in the retracted position 24b moved to the back side, the second armrest 24 is located on the back side of the back support surface 22a without protruding laterally from the first support portion 22b.
- FIG. 2 is a plan view of the bed 40 showing the operation of the second armrest 24 in the first embodiment.
- FIG. 3A is a perspective view showing the wheelchair 20 in a state where the second armrest 24 is located at the deployed position 24a.
- FIG. 3B is a perspective view showing the wheelchair 20 in a state where the second armrest 24 is located at the retracted position 24b.
- the second operation unit 41 configured by a joystick, a button, or the like is disposed at the tip of the first armrest 23 that is located on the opposite side of the bed base unit 30 when combined.
- the wheelchair 20 is controlled by the second control unit 36 based on the operation of the second operation unit 41, travel operation, posture change operation for changing the posture of the second seat surface portion 22, and retracting and deploying the second armrest 24. Operation is possible.
- the 2nd control part 36 is arrange
- the second armrest 24 in the retracted position at the retracted position 24b is supported on the back surface of the back support surface 22a by the arm placement surface 24a-1 of the second armrest 24. It is located so as to be parallel to the surface 22a.
- the rotation operation of the second armrest 24 between the deployed position 24a and the retracted position 24b is set so that the wheelchair 20 is performed in a tilted posture.
- this rotation operation is possible even when the wheelchair 20 is in the chair posture.
- the second armrest 24 is rotated based on the operation of the second operation unit 41 to facilitate getting on and off. It is also possible.
- FIG. 4A is a schematic cross-sectional view of the virtual plane 28 in the vicinity of the back support surface 22a and the third drive unit 25.
- FIG. 4A is a schematic cross-sectional view of the virtual plane 28 in the vicinity of the back support surface 22a and the third drive unit 25.
- the third drive unit 25 of the first embodiment includes a housing 25a, a worm gear 25b, a worm wheel 25c, and a motor 25m.
- the housing 25a is fixed to the back surface of the first support portion 22b.
- the worm gear 25b is rotatably supported by the housing 25a and is connected to a rotation shaft of a motor 25m fixed to the housing 25a.
- the worm wheel 25c is rotatably supported by the housing 25a and connected to the worm gear 25b, and forward / reverse rotation of the motor 25m is changed to forward / reverse rotation around the first rotation shaft 27 via the worm gear 25b and the worm wheel 25c. Convert. Then, by fixing the worm wheel 25 c to the L-shaped portion 35 of the second armrest 24, the second armrest 24 rotates around the first rotation shaft 27.
- the angle between the second armrest 24 and the back support surface 22a at the deployed position 24a is ⁇ a
- the angle between the first rotating shaft 27 and the back support surface 22a is ⁇ b
- the back support surface 22a is horizontal.
- An angle formed with the direction 38 is defined as ⁇ c.
- the locus of the second armrest 24 swells outward (side away from the wheelchair 20) as the angle ⁇ b increases, the shoulder of the passenger can be avoided more reliably.
- the trajectory of the second armrest 24 bulges outward, the occupant's arm slips away from the body. Therefore, in order to reduce the burden on the passenger, it is necessary to set an appropriate value as the value of the angle ⁇ b.
- the elbow movable range is narrow due to muscle contraction or the like.
- ⁇ a 90 °.
- the length of the L-shaped part 35 is demonstrated using FIG. 4B.
- the 1st armrest 23 is being fixed by the fixing
- FIG. 4B shows a state in which the fixing portion 23a and the first armrest 23 housed on the back side of the first support portion 22b are pulled out.
- the width of the first armrest 23 is d1
- the width of the second armrest 24 is d2
- the width of the first support portion 22b is D
- the wheelchair 20 described above can be used as the bed 40 by combining the bed base portion 30 with the second seat surface portion 22 and the first seat surface portion 31 on the same plane.
- the bed 40 according to the first embodiment is partly separated and used as the wheelchair 20 to easily perform an operation (transfer operation) of moving the care recipient (passenger) from the bed 40 to the wheelchair 20. be able to.
- FIG. 5 is a flowchart showing the union operation in which the wheelchair 20 is merged with the bed base 30.
- FIG. 6A is a perspective view of the wheelchair 20 and the bed base 30 in a state where the posture changing step is completed.
- FIG. 6B is a perspective view of the wheelchair 20 and the bed base portion 30 in a state where the adjacent step is completed.
- FIG. 7A is a perspective view of the wheelchair 20 and the bed base 30 in a state where the armrest retracting step is completed.
- FIG. 7B is a perspective view of the wheelchair 20 and the bed base portion 30 in a state where the bed deformation step is completed.
- cushion members such as a mat
- the passenger When the wheelchair 20 is united with the bed base unit 30, the passenger operates the second operation unit 41 to instruct the bed base unit 30 to unite.
- the wheelchair 20 and the bed base unit 30 perform a uniting operation under the control of the second control unit 36 based on the flowchart shown in FIG.
- the second control unit 36 of the wheelchair 20 changes the posture of the second seat surface portion 22 to the tilted posture as shown in FIG. 6A.
- the tilt posture is a posture inclined about 30 ° to 45 ° to the rear side with the chair posture.
- the wheelchair 20 in the tilted posture is moved into the recess 32 of the bed base 30 under the control of the second controller 36, so that the wheelchair 20 is moved to the bed base as shown in FIG. 6B. It positions so that it may adjoin to the base part 30.
- FIG. Completion of this adjacent step S2 is detected by a contact sensor 37 (see FIG. 6A) as an example of a coalescence detection unit.
- the contact sensor 37 provided on the bed base 30 side of the wheelchair 20 comes into contact with the bed base 30 and is turned on, the completion of the adjacent step S2 is detected, and the second control unit 36 detects the detection signal. Is output (step S11 in FIG. 6C).
- step S11 When the detection signal is output (Yes in step S11), the motor 25m is driven by the second control unit 36, and the second armrest 24 is rotated from the deployed position 24a to the retracted position 24b (step S12). Conversely, when the wheelchair 20 is separated from the bed base 30, the contact sensor 37 is turned off away from the bed base 30, so that a signal indicating detection cancellation is output to the second controller 36. Or a detection signal is no longer output to the 2nd control part 36 (No of Step S11). In this case, the motor 25m is reversely driven by the second control unit 36, and the second armrest 24 is rotated from the retracted position 24b to the deployed position 24a (see step S13).
- the motor 25m is provided with an encoder 25e, and the encoder 25e detects the rotation angle of the rotation shaft of the motor 25m, thereby positioning the second armrest 24 at the retracted position 24b and the deployed position 24a, respectively.
- the second armrest 24 can be automatically rotated (for example, armrest retracting step S3) in conjunction with the approaching and separating operations of the wheelchair 20 with respect to the bed base 30. it can.
- the second armrest 24 is retracted.
- the motor 25m is driven to rotate by the control of the second control unit 36 based on the operation of the second operation unit 41.
- the second armrest 24 located at the unfolded position 24a is retracted by rotating it about 180 ° to the retracted position 24b on the back surface of the back support surface 22a to obtain the state shown in FIG. 7A.
- the second armrest 24 is caused to rotate by the wheelchair 20 in the tilted posture as in the first embodiment.
- the configuration of the present embodiment is a configuration that can reliably retract the second armrest 24 with a simple structure having only one drive unit. For this reason, the structure for retracting the second armrest 24 can be simplified as a whole by using only one drive unit.
- the first seat surface portion 31 of the bed base portion 30 is raised, as shown in FIG. 7B.
- the second seat surface portion 22 and the first seat surface portion 31 are in the same plane state. As a result, it shifts to a bed state that can be used as the bed 40.
- the flat posture is a posture in which all the surfaces constituting the second seat surface portion 22 are substantially in a single plane state.
- the 1st armrest 23 is arrange
- the lifting mechanism (not shown) of the bed base unit 30 is controlled by the first control unit 39 based on the operation of the first operation unit 44 in the bed 40 in which the wheelchair 20 and the bed base unit 30 are combined.
- the second seat surface portion 22 and the first seat surface portion 31 can be raised and lowered simultaneously.
- the first drive unit 42 of the bed base unit 30 includes a bed 40 in which the wheelchair 20 and the bed base unit 30 are combined under the control of the first control unit 39 based on the operation of the first operation unit 44.
- the second seating surface portion 22 and the first seating surface portion 31 can be integrally changed in posture.
- the second armrest 24 is an electric type that is expanded and retracted by a motor 25m.
- the bed 40 can realize the combination and separation operation of the wheelchair 20 and the bed base unit 30 only by the operation of the second operation unit 41.
- the first embodiment it is possible to provide a wheelchair or a bed combined with the wheelchair that does not need to avoid the elbow and shoulder of the occupant during retraction and deployment.
- the base end portion of the arm placement surface 24a-1 of the second armrest 24 is mounted.
- the arm placement surface 24a-1 starts to move toward the upper left and obliquely rearward of the passenger, and rotates so as to turn around the outside of the passenger's shoulder. Therefore, the arm placed on the arm placement surface 24a-1 naturally falls to the front side.
- the second armrest 24 continues to rotate, so that on the back side of the first support portion 22b, the arm placement surface 24a-1 rotates to the retracted position 24b that is parallel to the back support surface 22a, and then stops. To do. For this reason, the 2nd armrest 24 does not protrude outside from the 1st support part 22b, and does not collide with the other 1st armrest 23 either. Further, since the second armrest 24 rotates around the back side of the first support portion 22b on the rear side of the occupant, the occupant can operate smoothly without feeling danger.
- the second armrest 24 since the second armrest 24 is positioned at the deployed position 24a until the wheelchair 20 is in a tilted posture, the passenger of the wheelchair 20 moves from the wheelchair 20 to the bed base 30 or the like in the middle of combining. It can be prevented from falling.
- this invention is not limited to the said embodiment, It can implement with another various aspect.
- the second armrest 24 is an electric type that is deployed and retracted by the motor 25m, but may be a manual type that is manually deployed and retracted.
- it can be made to show the effect which each has by combining arbitrary embodiment or modification of the said various embodiment or modification suitably.
- the wheelchair of the present invention and the bed combined with the wheelchair are particularly useful in the field of nursing care or medical care because it is unnecessary for the passenger to avoid the shoulder when the armrest is retracted, and the burden on the passenger can be reduced. is there.
Abstract
Description
表面に背支持面を有する第1支持部を少なくとも有する第1座面部と、
第1および第2アームレストと、
前記第2アームレストを第1回転軸周りに正逆回転させて、前記第2アームレストを前記展開位置と前記第1支持部の背後に位置する退避位置との間で移動させる第3駆動部とを備え、
前記第1回転軸は、前記第1座面部の前記背支持面に対して垂直、かつ前記第1座面部の前後方向に平行な平面上に配置されている。
図1は、本発明の第1実施形態におけるアームレストの動作を示す概略図である。
車いす20は、台車部21と、第2座面部22と、第1アームレスト23と、第2アームレスト24と、第2操作部41と、第3駆動部25と、第2制御部36とを備える。第2座面部22は、車いす座面部の一例である。第2操作部41は、車いす操作部の一例である。第3駆動部25は、アームレスト駆動部の一例である。
なお、前方に突出した展開位置24aでは、第2アームレスト24のアーム載置面24a-1は、水平方向沿いに配置されているか、又は、背支持面22aに対して90°程度の傾斜角度となる。一方、背面側に移動した退避位置24bでは、第2アームレスト24は、第1支持部22bから側方にはみ出ずに、背支持面22aの背面に位置している。
第2アームレスト24の展開位置24aと退避位置24bとの間での回転動作は、後述する説明では、車いす20がチルト姿勢の状態において行われるように設定している。しかしながら、図3Bに示すように、この回転動作は、車いす20が椅子姿勢の状態でも可能である。例えば、搭乗者が車いす20でトイレなどに移動して、車いす20から横方向に降りるときに、第2操作部41の操作に基づいて、第2アームレスト24を回転動作させて乗り降りを容易にすることも可能である。
続いて、図4Bを用いて、L字部35の長さについて説明する。ここで、第1アームレスト23が、第1支持部22bに対して図の横方向にスライド可能な固定部23aで固定されているとする。図4Bは、第1支持部22bの裏側に収納される固定部23aおよび第1アームレスト23を引き出した状態を示している。この第1アームレスト23の幅をd1とし、第2アームレスト24の幅をd2とし、第1支持部22bの幅をDとした場合、第1実施形態では、第2アームレスト24のL字屈曲部(アーム載置面24a-1の内端)から第1回転軸27(ウォームホイール25cの回転中心)までのL字部35の長さLは、 L={D+(d1-d2)}/2 以下とする必要がある。すなわち、第1実施形態では第1回転軸27を、第2座面部22の幅方向における中心からオフセットさせて位置させている。これは、第1アームレスト23と干渉せずに、L字部35を介して第2アームレスト24を確実に回転させることができ、かつ、退避位置24bで第2アームレスト24が第1支持部22bから横方向にはみ出ることがない構成である。
なお、第1アームレスト23の固定部23aを第1支持部22bの裏に収納する必要が無い場合は、長さLは、 L=(D+d1)/2 以下とすればよい。
前述のように、第1実施形態の車いす20では、第2アームレスト24が展開位置24aから退避位置24bに回転するとき、第2アームレスト24のアーム載置面24a-1の基端部が、搭乗者に対して斜め後の左上上方に向けて移動を開始し、アーム載置面24a-1は搭乗者の肩の外側を回るように回転する。そのため、アーム載置面24a-1に載置されていた腕は、自然と、前方側に落ちることになる。その後、第2アームレスト24が回転を続けることにより、第1支持部22bの背面側で、アーム載置面24a-1が背支持面22aと平行な位置である退避位置24bまで回転した後、停止する。このため、第2アームレスト24が第1支持部22bから外側に突出せず、他方の第1アームレスト23とも衝突したりすることがない。
また、第2アームレスト24が搭乗者の後ろ側の第1支持部22bの背面側に回り込んで回転するため、搭乗者は危険を感じることがなく、円滑に動作させることができる。
また、第1実施形態では、車いす20がチルト姿勢になるまで第2アームレスト24は展開位置24aに位置させているため、車いす20の搭乗者が合体途中で車いす20からベッド基台部30などに落下することが防止できる。
なお、本発明は上記実施形態に限定されるものではなく、その他種々の態様で実施できる。例えば、第1実施形態において、第2アームレスト24はモータ25mにより展開及び退避される電動式としたが、人手により展開及び退避される手動式としてもよい。
なお、上記様々な実施形態又は変形例のうちの任意の実施形態又は変形例を適宜組み合わせることにより、それぞれの有する効果を奏するようにすることができる。
本発明は、添付図面を参照しながら実施形態に関連して充分に記載されているが、この技術の熟練した人々にとっては種々の変形又は修正は明白である。そのような変形又は修正は、添付した請求の範囲による本発明の範囲から外れない限りにおいて、その中に含まれると理解されるべきである。
Claims (14)
- 表面に背支持面を有する第1支持部を少なくとも有する第1座面部と、
第1および第2アームレストと、
前記第2アームレストを第1回転軸周りに正逆回転させて、前記第2アームレストを展開位置と前記第1支持部の背後に位置する退避位置との間で移動させる第3駆動部とを備え、
前記第1回転軸は、前記第1座面部の前記背支持面に対して垂直、かつ前記第1座面部の前後方向に平行な平面上に配置されている、
車いす。 - 前記第1座面部の前記背支持面と前記第1回転軸との間の角度が、10°以上かつ170°以下である、
請求項1に記載の車いす。 - 前記第3駆動部に接続された前記第2アームレストの一端側は、L字状の部材で構成された、
請求項1または2に記載の車いす。 - 前記第1アームレストの幅をd1とし、前記第2アームレストの幅をd2とし、前記第1支持部の幅をDとした場合、前記L字状の部材におけるL字屈曲部から前記第3駆動部までの長さLは、 L={D+(d1-d2)}/2 以下である、
請求項3に記載の車いす。 - 前記第1回転軸は、前記第1座面部の幅方向の中心からオフセットした位置に配置された、
請求項1または2に記載の車いす。 - 前記第1回転軸は、前記第1座面部の幅方向の中心からオフセットした位置に配置された、
請求項3に記載の車いす。 - 前記第1回転軸は、前記第1座面部の幅方向の中心からオフセットした位置に配置された、
請求項4に記載の車いす。 - 前記第2アームレストは、前記第1回転軸を中心として回転するに際し、前記第1支持部の側部から離れる方向に移動した後に前記第1背支持部の背面に近づく方向に移動する、
請求項1または2に記載の車いす。 - 前記第2アームレストは、前記第1回転軸を中心として回転するに際し、前記第1支持部の側部から離れる方向に移動した後に前記第1背支持部の背面に近づく方向に移動する、
請求項3に記載の車いす。 - 請求項1または2に記載の車いすと、
前記車いすと合体してベッドを構成するベッド基台部とを備える、
ベッド。 - 前記第2アームレストは、前記第1支持部の前記ベッド基台部側のアームレストである、
請求項10に記載のベッド。 - 前記退避位置は、前記第1支持部の背面側において前記ベッド基台部とは反対側に位置している、
請求項11に記載のベッド。 - 前記車いすと前記ベッド基台部とが合体したことを検知する合体検知部と、
前記合体検知部で合体が検知されたときに、前記第1座面部の姿勢がチルト姿勢の前記車いすの前記第2アームレストを、前記展開位置から前記退避位置に移動させる第2制御部とをさらに備える、
請求項10に記載のベッド。 - 前記ベッドの動作を制御する第1制御部に操作を指示するための第1操作部と、
前記車いすの動作を制御する第2制御部および前記第3駆動部を制御する第3制御部に操作を指示するための第2操作部と、をさらに備える、
請求項10に記載のベッド。
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EP13861936.6A EP2818149A4 (en) | 2012-12-13 | 2013-12-12 | WHEELCHAIR AND BED INCLUDING |
US14/389,231 US20150082537A1 (en) | 2012-12-13 | 2013-12-12 | Wheelchair and bed to be combined with the same |
JP2014551896A JPWO2014091760A1 (ja) | 2012-12-13 | 2013-12-12 | 車いす、及びそれと合体するベッド |
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US (1) | US20150082537A1 (ja) |
EP (1) | EP2818149A4 (ja) |
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US20150082537A1 (en) | 2015-03-26 |
JPWO2014091760A1 (ja) | 2017-01-05 |
EP2818149A4 (en) | 2015-06-10 |
EP2818149A1 (en) | 2014-12-31 |
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