WO2025005377A1 - 팔걸이를 갖는 휠체어용 자세 변환 장치 - Google Patents
팔걸이를 갖는 휠체어용 자세 변환 장치 Download PDFInfo
- Publication number
- WO2025005377A1 WO2025005377A1 PCT/KR2024/000822 KR2024000822W WO2025005377A1 WO 2025005377 A1 WO2025005377 A1 WO 2025005377A1 KR 2024000822 W KR2024000822 W KR 2024000822W WO 2025005377 A1 WO2025005377 A1 WO 2025005377A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- folding
- link
- armrest
- folding link
- driving unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
-
- 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
-
- 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
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
-
- 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
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1067—Arrangements for adjusting the seat adjusting the backrest relative to the seat portion
-
- 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
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1072—Arrangements for adjusting the seat rotating the whole seat around a vertical axis
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/14—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable rotatable, e.g. to permit easy access
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
Definitions
- the present invention relates to a posture change device for a wheelchair that helps a user change posture while riding the wheelchair, and more specifically, to a posture change device for a wheelchair having armrests.
- wheelchairs are mobility assistance devices that help disabled, sick, or elderly people with limited mobility move around comfortably.
- wheelchairs consist of a seat, a backrest, and wheels mounted on both sides of the seat.
- Manual wheelchairs are often used, where the rider turns the wheels by hand or an assistant holds a handle from behind and pushes them.
- Electric wheelchairs are generally wheelchairs that use a motor to drive the wheels and have the advantage of making it easier for people with disabilities, patients, or elderly people with limited mobility to move around.
- the armrest may not rotate or may move to the wrong position, preventing the control panel installed on the armrest from being properly touched.
- the present invention provides a posture change device for a wheelchair that allows easy control of armrests when changing postures.
- the present invention provides a posture change device for a wheelchair that is compact, allows easy posture change, and can be attached to and detached from a two-wheeled wheelchair.
- a wheelchair posture conversion device having an armrest includes a seat support for supporting a user's hips, a leg support extending downward from the seat support and rotatably installed with respect to the seat support, a backrest extending upward from the seat support and rotatably installed with respect to the seat support, a base disposed below the seat support and supporting the seat support, a folding drive unit rotating the leg support unit and the backrest unit with respect to the seat support, and an armrest rotatably connected to the folding drive unit, wherein the folding drive unit is rotatably connected to the backrest unit and the leg support unit and includes a first folding link and a second folding link spaced apart in a height direction of the leg support unit, and the armrest is rotatably connected to the first folding link and can be supported by the second folding link.
- the armrest is rotatably connected to the first folding link and supported by the second folding link, so that when the user's posture is changed, the armrest can also be easily controlled.
- a wheelchair posture change device is provided with a lifting drive unit, a rotation drive unit, and a folding drive unit so as to be able to change the user's posture in various ways, and is also provided with a folding drive unit so as to be able to simultaneously change the leg support unit and the backrest unit.
- the lifting drive unit includes two lifting links and a lifting cylinder, a parallelogram link structure is formed to structurally absorb gravitational torque and independently compensate for the gravity of the joint, thereby enabling stable and easy posture change.
- the lifting link is equipped with a lifting spring so that it can be easily deformed with a small force, and the backrest and footrest move in conjunction with the folding link, thereby eliminating the mismatch between the joints of the user and the device, thereby further increasing user convenience.
- FIG. 1 is a perspective view illustrating a posture change device for a wheelchair according to one embodiment of the present invention.
- FIG. 2 is a side view illustrating a posture conversion device for a wheelchair according to one embodiment of the present invention.
- FIG. 3 is a drawing illustrating a lifting drive unit and a rotation drive unit according to one embodiment of the present invention.
- FIG. 4 is a drawing illustrating a folding driving unit and a rotation driving unit according to one embodiment of the present invention.
- FIG. 5 is a drawing illustrating a backrest according to one embodiment of the present invention.
- FIG. 6 is a drawing illustrating a portion of a bridge support according to one embodiment of the present invention.
- FIG. 7 is a drawing illustrating a state in which the armrest of a posture change device for a wheelchair according to one embodiment of the present invention is rotated.
- FIG. 8 is a side view illustrating a posture change device for a wheelchair according to one embodiment of the present invention in a lying state.
- FIG. 9 is a side view illustrating a posture change device for a wheelchair according to one embodiment of the present invention in a standing state.
- a wheelchair posture conversion device having an armrest includes a seat support for supporting a user's hips, a leg support extending downward from the seat support and rotatably installed with respect to the seat support, a backrest extending upward from the seat support and rotatably installed with respect to the seat support, a base disposed below the seat support and supporting the seat support, a folding drive unit rotating the leg support unit and the backrest unit with respect to the seat support, and an armrest rotatably connected to the folding drive unit, wherein the folding drive unit is rotatably connected to the backrest unit and the leg support unit and includes a first folding link and a second folding link spaced apart in a height direction of the leg support unit, and the armrest is rotatably connected to the first folding link and can be supported by the second folding link.
- the armrest may be formed with a position projection protruding rearward
- the second folding link may be formed with a support column that is combined with the position projection and supports the position projection
- a fixed magnet coupled to the support column by magnetic force may be installed in the position protrusion.
- the armrest includes an armrest on which a user's arm rests and an armrest frame that protrudes from the armrest and is coupled to the first folding link, a position-adjusting magnet may be installed on the first folding link, and a magnetic plate coupled to the position-adjusting magnet may be installed on the armrest frame.
- a wheelchair posture change device may further include an elevating drive unit for elevating the seat support relative to the base and a rotating drive unit for rotating the seat support relative to the elevating drive unit.
- one longitudinal end of the folding driving unit may be fixed to the backrest, and the other longitudinal end of the folding driving unit may be fixed to the leg support.
- the folding driving unit may include a folding cylinder having one longitudinal end connected to the first folding link and the other longitudinal end connected to the second folding link.
- the first folding link and the second folding link may be provided with a folding spring that pushes the second folding link against the first folding link.
- the leg support part further includes a footrest upper frame connected to the first folding link and the second folding link
- the backrest part further includes a backrest frame connected to the first folding link and the second folding link
- the joining points of the footrest upper frame and the backrest frame connected to the first folding link and the second folding link can be respectively positioned at the four corners of a parallelogram.
- the rotational driving unit may be coupled to a side of the first folding link, and the elevating driving unit may be coupled to a rear surface of the rotational driving unit.
- the rotation driving unit connects the lifting driving unit and the folding driving unit, and can rotate the seat support via the folding driving unit.
- two folding driving units may be installed at the lower portion of the seat support, and the lifting driving unit may be installed between the spaced folding driving units.
- the elevating drive unit may include a first elevating link connecting the base and the rotational drive unit, a second elevating link connecting the base and the rotational drive unit but spaced apart from the first elevating link, and a elevating cylinder having one longitudinal end connected to the first elevating link and the other longitudinal end connected to the second elevating link.
- the first lifting link and the second lifting link may be provided with a lifting spring that pushes the second lifting link against the first lifting link.
- connection points of the rotational driving unit connected to the first lifting link and the second lifting link and the base can be located at the four vertices of a parallelogram.
- the leg support may include a foot plate upper frame connected to the first folding link and the second folding link, a pair of foot plate lower frames connected to the lower portion of the foot plate upper frame, a transfer bar respectively inserted into the interior of the pair of foot plate lower frames and installed to be movable in the longitudinal direction of the foot plate lower frames, a foot plate connected to the lower portion of the transfer bar and supporting the user's foot, and a connecting rod connected to the upper portion of the transfer bar and connecting the transfer bar and the second folding link.
- the backrest part may include a backrest frame connected to the first folding link and the second folding link, a pair of slider bars inserted into the backrest frame and installed to be movable in the longitudinal direction of the backrest frame, a backrest plate connected to the pair of slider bars and supporting the user's back, and a transfer rod connected to the lower portions of the slider bars and connecting the slider bars and the second folding link.
- the first gap between the pair of footrest subframes may be smaller than the second gap between the pair of slider bars.
- a wheelchair posture change device (100) may include a seat support (110), a backrest (120), a leg support (130), a base (170), an elevation drive unit (140), a rotation drive unit (150), a folding drive unit (160), and an armrest (180).
- the wheelchair posture change device (100) according to the present embodiment is a device that is detachably coupled to an electric wheelchair having two wheels or a wheel frame to help a user of an electric wheelchair change posture.
- the present invention is not limited thereto, and the posture change device (100) may be applied to a wheelchair having four wheels or to a manual wheelchair.
- the seat support (110) supports the user's buttocks and can be fixed to the folding drive unit (160).
- a cushion, etc. can be installed on the seat support (110).
- the backrest unit (120) extends upward from the seat support (110) and is installed so as to be rotatable with respect to the seat support (110).
- the backrest unit (120) can be connected to the seat support (110) via the folding drive unit (160).
- the leg support (130) extends downward from the seat support (110) and is installed so as to be rotatable with respect to the seat support (110).
- the leg support (130) can be coupled to the seat support (110) via a folding drive (160).
- FIG. 3 is a drawing illustrating a lifting drive unit and a rotation drive unit according to one embodiment of the present invention.
- the lifting drive unit (140) raises and lowers the seat support (110) and can be fixed to the base (170).
- the base (170) supports the lifting drive unit (140) at the bottom of the lifting drive unit and can be formed in the shape of a pillar.
- the base (170) can be removably coupled to a wheelchair or wheel frame.
- the wheel frame (not shown) can include two wheels and a driving motor driving the wheels.
- the wheel frame (not shown) can further include a support module supporting the driving motor and the wheels and one or more auxiliary wheels.
- the wheel frame (not shown) can include four or more wheels.
- the base (170) can be detachably connected to a wheel frame (not shown) using a bolt, pin, clamp, or the like. Accordingly, the posture change device (100) according to the present embodiment can be applied to various types of wheelchairs.
- the lifting drive unit (140) may include a first lifting link (141), a second lifting link (142), a lifting cylinder (143), and a lifting spring (145).
- the first lifting link (141) and the second lifting link (142) connect the base (170) and the rotation driving unit (150), and may be arranged in parallel.
- the first lifting link (141) and the second lifting link (142) are rotatably connected to the base (170) and the rotation driving unit (150), and may be spaced apart in the height direction with a gap.
- the lifting drive unit (140) is located at the lower center in the width direction of the seat support (110), and may be arranged between the spaced-apart folding drive units (160).
- the first lifting link (141) and the second lifting link (142) include two spaced bars and a support bar supporting the bars, and the lifting cylinder (143) and the lifting spring (145) can be rotatably coupled to the support bar.
- the first lifting link (141) and the second lifting link (142) can be arranged in parallel to form a parallelogram link structure. More specifically, the connection points of the rotary driving part (150) and the base (170) connected to the first lifting link (141) and the second lifting link (142) are located at the four vertices of the parallelogram.
- the lifting cylinder (143) may be formed of an electric motor-based linear actuator, a hydraulic or pneumatic cylinder, and may push or pull the first lifting link (141) relative to the second lifting link (142).
- the lifting cylinder (143) may be connected adjacent to one longitudinal end of the first lifting link (141) and adjacent to the other longitudinal end of the second lifting link (142). That is, the lifting cylinder (143) may be connected to the rear side of the first lifting link (141) arranged at the bottom and to the front side of the second lifting link (142) arranged at the top.
- the rotation driving unit (150) When the lifting cylinder (143) pushes the second lifting link (142), the rotation driving unit (150) can rise, and when the lifting cylinder (143) pulls the second lifting link (142), the rotation driving unit (150) can descend.
- Two lifting springs (145) are installed in the first lifting link (141) and the second lifting link (142), and the lifting springs (145) can exert a force to push the second lifting link (142) against the first lifting link (141).
- the lifting springs (145) can be connected adjacent to one longitudinal end of the first lifting link (141) and adjacent to the other longitudinal end of the second lifting link (142).
- the lifting springs (145) can be formed of a gas spring, but the present invention is not limited thereto.
- the lifting springs (145) can be arranged parallel to the lifting cylinder (143). When the lifting springs (145) are installed in this manner, the lifting springs (145) compensate for the load and can raise or lower the seat support (110) with a small force.
- the rotation drive unit (150) is fixed to the front of the first lifting link (141) and the second lifting link (142), and may include a motor.
- the rotation drive unit (150) can rotate the seat support (110) with respect to the lifting drive unit (140).
- the rotation drive unit (150) is connected to the seat support (110) via the first folding link (162), and the folding drive unit (160) can be rotated by the rotation drive unit (150).
- FIG. 4 is a drawing illustrating a folding driving unit and a rotation driving unit according to one embodiment of the present invention.
- two folding driving units (160) are installed at the bottom of the seat support (110), and the folding driving units (160) are spaced apart in the width direction of the seat support (110).
- the folding driving units (160) rotate the leg support unit (130) and the backrest unit (120) with respect to the seat support unit (110).
- One end of the folding drive unit (160) is coupled to the backrest unit (120), and the other end of the folding drive unit (160) is coupled to the leg support unit (130).
- the upper end of the folding drive unit (160) can be fixed to the seat support unit (110).
- the folding drive unit (160) may include a first folding link (161), a second folding link (162), a folding cylinder (163), an auxiliary spring (164), and a folding spring (165).
- the first folding link (161) and the second folding link (162) connect the backrest unit (120) and the leg support unit (130) and may be arranged in parallel.
- the first folding link (161) and the second folding link (162) are rotatably connected to the backrest part (120) and the leg support part (130), and can be spaced apart in the height direction with a gap.
- the first folding link (161) and the second folding link (162) can be arranged in parallel to form a parallelogram link structure. That is, the connecting points of the footrest upper frame (136) and the backrest frame (121) connected to the first folding link (161) and the second folding link (162) are respectively located at the four corners of the parallelogram.
- the first folding link (161) and the second folding link (162) include two spaced bars and a support bar supporting the bars, and the folding cylinder (163), the auxiliary spring (164), and the folding spring (165) can be rotatably coupled to the support bar.
- the first folding link (161) is fixed to the lower portion of the seat support (110) and rotates together with the seat support (110).
- the first folding link (161) has a protrusion formed that protrudes downward, and a rotation driving unit (150) can be fixed to the protrusion.
- the folding cylinder (163) may be comprised of an electric motor-based linear actuator, a hydraulic or pneumatic cylinder, and may push or pull the first folding link (161) relative to the second folding link (162).
- the folding cylinder (163) may be connected adjacent to one longitudinal end of the first folding link (161) and adjacent to the other longitudinal end of the second folding link (162). That is, the folding cylinder (163) may be connected to the front side of the second folding link (162) arranged at the bottom and to the rear side of the first folding link (161) arranged at the top.
- the folding cylinder (163) pushes the second folding link (162), the backrest (120) and the leg support (130) can be unfolded, and when the folding cylinder pulls the second folding link (162), the backrest (120) and the leg support (130) can be raised.
- first folding link (161) and the second folding link (162) form a parallelogram link structure and are connected to the backrest (120) and the leg support (130), the backrest (120) and the leg support (130) can be simultaneously unfolded or raised by one folding cylinder (163).
- a folding spring (165) is installed on the first folding link (161) and the second folding link (162) to push the second folding link (162) against the first folding link (161), and the auxiliary spring (164) and the folding spring (165) are connected in an intersecting direction.
- the folding spring (165) can be arranged to intersect with the folding cylinder (163).
- the auxiliary spring (164) assists the power of the rotary drive unit (150) when the rotary drive unit (150) lifts the seat support (110).
- the backrest part (120) may include a backrest frame (121) connected to a folding drive part (160), a slider bar (122) inserted into the backrest frame (121) and installed to be movable in the longitudinal direction of the backrest frame (121), a backrest plate (125) connected to the slider bar (122) and supporting the user's back, and a transfer rod (123) connected to the lower part of the slider bar (122) and connecting the slider bar (122) and the first folding link (161).
- the transfer rod (123) and the slider bar (122) are connected via a pin (129), and a guide hole (121b) through which the pin (129) is inserted and moved may be formed in the backrest frame (121).
- the backrest portion (120) may further include a support bar (126) connecting a pair of spaced slider bars (122).
- the second folding link (162) moves downward with respect to the seat base (110) and the first folding link (161). Accordingly, the transport rod (123) is coupled with the second folding link (162) to pull the slider bar (122) when the backrest (120) is unfolded, and accordingly, the backrest plate (125) moves downward along the backrest frame (121).
- the backrest plate (125) can be pushed upward by the transport rod (123).
- the backrest plate (125) when the backrest part (120) is unfolded, the backrest plate (125) can move downward to support the back, and when the backrest part (120) is raised, the backrest plate (125) can move upward to stably support the back.
- the leg support (130) may include a footrest upper frame (136) connected to the first folding link (161) and the second folding link (162), a front support member (138) fixed to the front of the footrest upper frame (136), a footrest lower frame (131) fixed to the front support member (138) and connected downward, a transfer rod (132) inserted into the footrest lower frame (131) and installed to be movable in the longitudinal direction of the footrest lower frame (131), a footrest (133) connected to the lower portion of the transfer rod (132) and supporting the user's foot, and a connecting rod (134) connected to the upper portion of the transfer rod (132) and connecting the transfer rod (132) and the second folding link (162).
- the footrest upper frame (136) is coupled with the first folding link (161) and the second folding link (162) to support the first folding link (161) and the second folding link (162).
- the footrest upper frame (136) may include a protrusion (136a) that protrudes rearward and is coupled to the second folding link (161).
- a front support member (138) connecting the footrest upper frames (136) may be installed in front of the footrest upper frame (136).
- a footrest lower frame (131) is fixed to the front support member (138), and a pair of footrest lower frames (131) extend downward from the front support member (138).
- a connecting rod (134) is connected to each of the pair of footrest lower frames (131), and a second folding link (162) is fixed to the connecting rod (134).
- the connecting rod (134) and the foot plate lower frame (131) are connected via a pin (139), and a guide hole (131a) through which the pin (139) is inserted and moved can be formed in the foot plate lower frame (131).
- the connecting rod (134) pushes the transfer bar (132) when the leg support (130) is unfolded, and accordingly, the footrest (133) moves downward.
- the footrest (133) can be pulled upward by the connecting rod (134).
- the footrest (133) moves downward to minimize foot discomfort, and when the leg support (130) is raised, the footrest moves upward to stably support the foot.
- the backrest frame (121) includes an upper projection (121a) that protrudes in the width direction and is coupled to a first folding link (161), a second folding link (162) is coupled to the lower end of the backrest frame (121), and a first folding link (161) is coupled to the upper projection (121a).
- the backrest frame (121) and the footrest upper frame (136) are arranged parallel, and the first folding link (161) and the second folding link (162) are arranged parallel to form a parallelogram link structure. That is, the connecting points of the footrest upper frame (136) and the backrest frame (121) connected to the first folding link (161) and the second folding link (162) are respectively located at the four corners of the parallelogram.
- the first gap (d1) between the pair of footrest subframes (131) may be smaller than the second gap (d2) between the pair of slider bars (122).
- the width of the footrest (133) along the first gap (d1) between the pair of footrest subframes (131) may be smaller than the width of the backrest (125) along the same direction. Accordingly, when the base (170) is coupled to the wheelchair or wheel frame while stably supporting the user's back, the footrest subframe (131) and the footrest (133) are positioned between the two wheels of the wheelchair, so that attachment to and detachment from the wheelchair or wheel frame may be easy.
- An armrest (180) is rotatably installed in the folding driving unit (160).
- the armrest (180) is rotatably connected to the first folding link (161) and supported by the second folding link (162).
- the armrest (180) is a part that supports the user's arm, and a control panel (183) for controlling the wheelchair can be installed in the armrest (180).
- the armrest (180) may include an armrest stand (181) on which the user's arm rests, and an armrest frame (182) that protrudes downward from the armrest stand (181) and is coupled to a first folding link (161).
- a position projection (185) that protrudes rearward may be formed on the armrest frame (182), and a support column (166) that is coupled with the position projection (185) and supports the position projection (185) may be formed on the second folding link (162).
- the support pillar (166) limits excessive rotation of the armrest (180) and supports the armrest (180).
- a fixed magnet (187) is installed in the position protrusion (185), and the support pillar (166) may be made of a magnetic body that is coupled with the fixed magnet (187). Accordingly, the support pillar (166) and the position protrusion (185) are attracted to each other by magnetic force, so that the armrest frame (182) and the second folding link (162) can be easily coupled.
- a position-adjusting magnet (167) is installed in the first folding link (161), and a magnetic plate (186) coupled with the position-adjusting magnet is installed in the armrest frame (182). Accordingly, after the armrest (180) is separated from the support column (166) and rotated, the magnetic plate (1896) and the position-adjusting magnet (167) are coupled to support the armrest (180).
- a limit projection (168) that controls the rotation of the armrest is installed in the first folding link (161), and the limit projection (168) prevents the armrest (180) from rotating excessively.
- FIG. 8 is a side view illustrating a posture change device for a wheelchair according to one embodiment of the present invention in a lying state.
- the armrest (180) can be rotated with respect to the first folding link (161) by the support column (166).
- the armrest (180) is also lowered to some extent, but the degree of lowering of the armrest (180) is minimal.
- the armrest (180) is rotated to maintain an angle that is almost perpendicular to the backrest (120), so that the user can comfortably rest their arms and easily operate the control panel (183).
- FIG. 9 is a side view illustrating a posture change device for a wheelchair according to one embodiment of the present invention in a standing state.
- the posture change device stands up.
- the armrest (180) can rotate with respect to the first folding link (161) by the support column (166) and maintain an angle that is almost perpendicular to the backrest (120).
- the wheelchair posture change device can provide convenience to the user by easily changing the posture, such as sitting, standing, forward tilting, backward tilting, and reclining.
- first lifting link (141) and the second lifting link (142) form a parallelogram link structure
- first folding link (161) and the second folding link (162) form a parallelogram link structure
- a lightweight and compact device is configured by the two parallelogram link structures, and modularization is easy with a small support area.
- the lifting spring (145) and the folding spring (164, 165) are provided, the gravitational torque due to the relative motion between the joints is structurally absorbed, and the load can be compensated for independently for each joint.
- the armrest (180) rotates during the movement of the first folding link (161) and the second folding link (162), a suitable armrest (180) rotation position can be provided to the user even when changing postures such as standing and reclining.
- the armrest (180) can be manually rotated and fixed in a desired position.
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Description
Claims (18)
- 팔걸이를 갖는 휠체어용 자세 변환 장치에 있어서,사용자의 엉덩이를 지지하는 좌석 받침대;상기 좌석 받침대에서 하부로 이어지며, 상기 좌석 받침대에 대하여 회전가능하게 설치된 다리 지지부;상기 좌석 받침대에서 상부로 이어지며, 상기 좌석 받침대에 대하여 회전 가능하게 설치된 등받이부;상기 좌석 받침대의 하부에 배치되어 상기 좌석 받침대를 지지하는 베이스;상기 다리 지지부와 상기 등받이부를 상기 좌석 받침대에 대하여 회전시키는 폴딩 구동부; 및상기 폴딩 구동부에 회전 가능하게 결합된 팔걸이;를 포함하고,상기 폴딩 구동부는 상기 등받이부와 상기 다리 지지부에 회전 가능하게 결합되며, 상기 다리 지지부의 높이 방향으로 이격된 제1 폴딩 링크와 제2 폴딩 링크를 포함하고,상기 팔걸이는 상기 제1 폴딩 링크에 회전 가능하게 결합되되, 상기 제2 폴딩 링크에 지지된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제1항에 있어서,상기 팔걸이에는 후방으로 돌출된 포지션 돌기가 형성되고, 상기 제2 폴딩 링크에는 상기 포지션 돌기와 결합되어 상기 포지션 돌기를 지지하는 지지 기둥이 형성된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제2항에 있어서,상기 포지션 돌기에는 상기 지지 기둥과 자기력에 의하여 결합되는 고정 자석이 설치된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제1항에 있어서,상기 팔걸이는 사용자의 팔이 안착되는 팔걸이대와 상기 팔걸이대에서 돌출되어 상기 제1 폴딩 링크에 결합되는 팔걸이 프레임을 포함하고,상기 제1 폴딩 링크에는 위치조절 자석이 설치되고, 상기 팔걸이 프레임에는 상기 위치조절 자석과 결합되는 자성체 플레이트가 설치된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제1항에 있어서,상기 베이스에 대하여 상기 좌석 받침대를 승강시키는 승강 구동부와 상기 승강 구동부에 대하여 상기 좌석 받침대를 회전시키는 회전 구동부를 더 포함하는 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제5항에 있어서,상기 폴딩 구동부의 길이방향 일측 단부는 상기 등받이부에 고정되고, 상기 폴딩 구동부의 길이방향 타측 단부는 상기 다리 지지부에 고정된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제6항에 있어서,상기 폴딩 구동부는 길이방향 일측 단부가 상기 제1 폴딩 링크에 연결되고, 길이방향 타측 단부가 상기 제2 폴딩 링크에 연결된 폴딩 실린더를 포함하는 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제7항에 있어서,상기 제1 폴딩 링크와 상기 제2 폴딩 링크에는 상기 제2 폴딩 링크를 상기 제1 폴딩 링크에 대하여 밀어내는 폴딩 스프링이 설치된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제5항에 있어서,상기 다리 지지부는 상기 제1 폴딩 링크 및 상기 제2 폴딩 링크와 연결된 발판 상부프레임을 더 포함하고, 상기 등받이부는 상기 제1 폴딩 링크 및 상기 제2 폴딩 링크와 연결된 등받이 프레임을 더 포함하며,상기 제1 폴딩 링크 및 상기 제2 폴딩 링크와 연결되는 상기 발판 상부프레임과 상기 등받이 프레임의 결합지점들이 평행사변형의 네 개의 꼭지점에 각각 위치하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제5항에 있어서,상기 제1 폴딩 링크의 측면에 상기 회전 구동부가 결합되고, 상기 회전 구동부의 배면에 상기 승강 구동부가 결합된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제10항에 있어서,상기 회전 구동부는 상기 승강 구동부와 상기 폴딩 구동부를 연결하며, 상기 폴딩 구동부를 매개로 상기 좌석 받침대를 회전시키는 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제5항에 있어서,상기 좌석 받침대의 하부에는 2개의 상기 폴딩 구동부가 설치되고, 이격된 상기 폴딩 구동부 사이에 상기 승강 구동부가 설치된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제2항에 있어서,상기 승강 구동부는 상기 베이스와 상기 회전 구동부를 연결하는 제1 승강 링크, 상기 베이스와 상기 회전 구동부를 연결하되 상기 제1 승강 링크에서 이격된 제2 승강 링크, 및 길이방향 일측 단부가 상기 제1 승강 링크에 연결되고, 길이방향 타측 단부가 상기 제2 승강 링크에 연결된 승강 실린더를 포함하는 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제13항에 있어서,상기 제1 승강 링크와 상기 제2 승강 링크에는 상기 제2 승강 링크를 상기 제1 승강 링크에 대하여 밀어내는 승강 스프링이 설치된 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제13항에 있어서,상기 제1 승강 링크 및 상기 제2 승강 링크와 연결되는 상기 회전구동부와 상기 베이스의 연결지점들이 평행사변형의 네 개의 꼭지점에 위치하는 휠체어용 자세 변환 장치.
- 제1항에 있어서,상기 다리 지지부는, 상기 제1 폴딩 링크 및 상기 제2 폴딩 링크와 연결된 발판 상부프레임과, 상기 발판 상부프레임의 하부로 이어진 한 쌍의 발판 하부프레임과, 상기 한 쌍의 발판 하부프레임 내부에 각각 삽입되어 상기 발판 하부프레임의 길이방향으로 이동 가능하게 설치된 이송 막대와 상기 이송 막대의 하부에 결합되며 사용자의 발을 지지하는 발판과 상기 이송 막대의 상부에 결합되며 상기 이송 막대와 상기 제2 폴딩 링크를 연결하는 커넥팅 로드를 포함하는 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제16항에 있어서,상기 등받이부는 상기 제1 폴딩 링크 및 상기 제2 폴딩 링크와 연결된 등받이 프레임과 상기 등받이 프레임 내부에 삽입되어 상기 등받이 프레임의 길이방향으로 이동 가능하게 설치된 한 쌍의 슬라이더 막대와 상기 슬라이더 막대에 결합되며 사용자의 등을 지지하는 등받이판과 상기 한 쌍의 슬라이더 막대의 하부에 각각 결합되며 상기 슬라이더 막대와 상기 제2 폴딩 링크를 연결하는 이송 로드를 포함하는 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
- 제17항에 있어서,상기 한 쌍의 발판 하부프레임 간의 제1 간격은 상기 한 쌍의 슬라이더 막대들 간의 제2 간격보다 작은 것을 특징으로 하는 팔걸이를 갖는 휠체어용 자세 변환 장치.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24832165.5A EP4736828A1 (en) | 2023-06-27 | 2024-01-17 | Posture changing apparatus having armrests, for wheelchair |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2023-0082547 | 2023-06-27 | ||
| KR1020230082547A KR102869911B1 (ko) | 2023-06-27 | 2023-06-27 | 팔걸이를 갖는 휠체어용 자세 변환 장치 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025005377A1 true WO2025005377A1 (ko) | 2025-01-02 |
Family
ID=93938712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/000822 Ceased WO2025005377A1 (ko) | 2023-06-27 | 2024-01-17 | 팔걸이를 갖는 휠체어용 자세 변환 장치 |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4736828A1 (ko) |
| KR (1) | KR102869911B1 (ko) |
| WO (1) | WO2025005377A1 (ko) |
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| US9044369B2 (en) * | 2011-11-04 | 2015-06-02 | The United States Of America, As Represented By The Department Of Veterans Affairs | Mobile manual standing wheelchair |
| US20180177653A1 (en) * | 2014-09-19 | 2018-06-28 | Permobil Ab | Electrically powered wheelchair with an armrest adjustment arrangement |
| JP2019208561A (ja) * | 2018-05-31 | 2019-12-12 | タマチ工業株式会社 | 歩行補助椅子 |
| KR20230082892A (ko) * | 2021-12-02 | 2023-06-09 | 근로복지공단 | 전동 휠체어 시트 리프트 매커니즘 |
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| KR20120060058A (ko) * | 2010-12-01 | 2012-06-11 | 한국기술교육대학교 산학협력단 | 기립 도우미 훨체어 |
| KR20140088757A (ko) * | 2013-01-03 | 2014-07-11 | 서울과학기술대학교 산학협력단 | 기립 보조형 휠체어 |
| CN105832474B (zh) * | 2016-03-10 | 2018-01-30 | 国家康复辅具研究中心 | 辅助站立装置 |
| JP6393810B1 (ja) * | 2017-08-29 | 2018-09-19 | キョウワアグメント株式会社 | 起立補助装置及びそれを取り付けた車椅子 |
| US20200229998A1 (en) * | 2018-11-14 | 2020-07-23 | Ohad Paz | Smart tilting/lifting chair with the ability to tilt user to vertical position |
| KR102265885B1 (ko) | 2018-12-06 | 2021-06-16 | (주)옵토닉스 | 다중의 자세모드 변경이 가능한 전동휠체어 |
| KR102445549B1 (ko) * | 2020-09-01 | 2022-09-22 | 한국기계연구원 | 기립 장치 및 이를 포함하는 휠체어 |
| CN213910935U (zh) * | 2020-10-28 | 2021-08-10 | 名一生物科技股份有限公司 | 轮椅 |
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2023
- 2023-06-27 KR KR1020230082547A patent/KR102869911B1/ko active Active
-
2024
- 2024-01-17 EP EP24832165.5A patent/EP4736828A1/en active Pending
- 2024-01-17 WO PCT/KR2024/000822 patent/WO2025005377A1/ko not_active Ceased
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|---|---|---|---|---|
| KR20050090194A (ko) * | 2004-03-08 | 2005-09-13 | 재단법인 산재의료관리원 | 전동 기립형 휠체어 |
| US9044369B2 (en) * | 2011-11-04 | 2015-06-02 | The United States Of America, As Represented By The Department Of Veterans Affairs | Mobile manual standing wheelchair |
| US20180177653A1 (en) * | 2014-09-19 | 2018-06-28 | Permobil Ab | Electrically powered wheelchair with an armrest adjustment arrangement |
| JP2019208561A (ja) * | 2018-05-31 | 2019-12-12 | タマチ工業株式会社 | 歩行補助椅子 |
| KR20230082892A (ko) * | 2021-12-02 | 2023-06-09 | 근로복지공단 | 전동 휠체어 시트 리프트 매커니즘 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20250000603A (ko) | 2025-01-03 |
| EP4736828A1 (en) | 2026-05-06 |
| KR102869911B1 (ko) | 2025-10-13 |
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