WO2021208573A1 - 可折叠轮椅 - Google Patents

可折叠轮椅 Download PDF

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Publication number
WO2021208573A1
WO2021208573A1 PCT/CN2021/075506 CN2021075506W WO2021208573A1 WO 2021208573 A1 WO2021208573 A1 WO 2021208573A1 CN 2021075506 W CN2021075506 W CN 2021075506W WO 2021208573 A1 WO2021208573 A1 WO 2021208573A1
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WO
WIPO (PCT)
Prior art keywords
locking
cavity
bracket
rear wheel
block
Prior art date
Application number
PCT/CN2021/075506
Other languages
English (en)
French (fr)
Inventor
陈向阳
吴焘
唐良振
Original Assignee
浙江爱司米电气有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 浙江爱司米电气有限公司 filed Critical 浙江爱司米电气有限公司
Publication of WO2021208573A1 publication Critical patent/WO2021208573A1/zh

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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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/085—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair
    • A61G5/0858—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0833—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair
    • A61G5/0841—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0866—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable folding down backrest, e.g. where the backrest folds down onto the seat support
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0883—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having locking means for maintaining a folded or unfolded condition
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0891—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having rigid supports, e.g. seat or back supports which retain their shape after folding of the wheelchair
    • 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

Definitions

  • the invention relates to the field of medical equipment, in particular to a foldable wheelchair.
  • wheelchairs are usually used instead of walking, which can enable patients to get better treatment and recovery and facilitate their daily lives.
  • the purpose of the present invention is to overcome the shortcomings of the prior art and provide a foldable wheelchair.
  • the locking mechanism of the wheelchair is simple, compact and convenient to use.
  • the matching structure of the locking mechanism is located inside the rod, which has high safety, is not easy to be damaged, and has a long service life. Long, beautiful appearance, strong sense of luxury.
  • a foldable wheelchair including:
  • a rear wheel bracket the upper end of the rear wheel bracket is rotatably connected with the lower end of the backrest bracket, and the bottom of the rear wheel bracket is provided with a rear wheel;
  • a seat mechanism the seat mechanism is rotatably arranged on the backrest bracket, and the seat mechanism has an extension rod extending forward and downward;
  • a front wheel bracket the bottom of the front wheel bracket is provided with a front wheel, the front end of the front wheel bracket is rotatably connected with the front end of the extension rod, and the rear end of the front wheel bracket is connected to the rear wheel.
  • the brackets are connected by rotation;
  • the lock mechanism includes a lock block and a lock cavity for accommodating the lock block, the lock cavity extends in the left-right direction, and the lock cavity includes a first lock cavity provided at the lower end of the backrest bracket and a rear wheel bracket.
  • the second locking cavity at the upper end, the locking block is movably arranged in the locking cavity left and right, when the locking block is located in the first locking cavity and the second locking cavity at the same time, the The locking mechanism is locked.
  • the locking mechanism is unlocked, and the locking mechanism further includes a mechanism for driving the locking block in the An unlocking device that moves left and right in the lock cavity.
  • the lower end of the backrest bracket is provided with a blind hole, the inner wall of the blind hole is provided with a first locking groove, the first locking cavity includes a cavity in the first locking groove, and the rear wheel bracket
  • the upper end is provided with a through hole, the inner wall of the through hole is provided with a second locking groove, and the second locking cavity includes a cavity in the second locking groove.
  • a locking tooth is provided on the outer wall of the locking block, and when the locking tooth is inserted into the first locking groove and the second locking groove at the same time, the locking mechanism is locked, and the locking tooth is only When inserted into the first locking groove or the second locking groove, the locking mechanism is unlocked.
  • a blocking block is provided in the through hole, one side surface of the blocking block is attached to the end of the second locking groove away from the first locking groove, and the blocking block is used for Preventing the locking block from escaping from the second locking groove when moving in the second locking groove.
  • the axis line of the blind hole coincides with the axis line of the through hole, and the rotation axis of the rear wheel bracket that rotates relative to the backrest bracket extends into the hole of the blind hole
  • the through hole is formed in or formed by the opening of the through hole extending into the blind hole.
  • the locking mechanism further includes a spring, one end of the spring is pressed against the bottom wall of the blind hole, and the other end of the spring is pressed against the side wall of the locking block close to the blind hole.
  • the spring has a tendency to drive the locking block to move away from the blind hole.
  • the unlocking device includes a rotatable unlocking handle, the end of the unlocking handle has an inclined surface, and the inclined surface is in contact with one end surface of the locking block.
  • the unlocking handle rotates, the The contact point between the inclined surface and the locking block moves left and/or right, pushing the locking block to move left and/or right in the locking cavity.
  • the unlocking handle is rotatably arranged on the rear wheel bracket, and the end of the unlocking handle extends into the through hole to form the unlocking handle rotating relative to the rear wheel bracket
  • the axis of rotation of the unlocking handle coincides with the axis of the through hole.
  • the foldable wheelchair further includes a backrest plate, a footrest and an armrest rod, the backrest plate is rotatably arranged on the backrest bracket, and the footrest is rotatably installed on the footrest.
  • the end of the footrest mounting rod is fixed on the front wheel bracket, the armrest rod is rotatably arranged on the backrest bracket, and the armrest rod is located above the seat mechanism.
  • the foldable wheelchair further includes a hub motor, a battery box and a controller
  • the hub motor is arranged on the rear wheel
  • the hub motor is used to drive the rear wheel to rotate
  • the axis of rotation of the shaft coincides with the axis of rotation of the rear wheel
  • the battery box is detachably arranged on the rear wheel bracket
  • the controller is used to control the rotation speed and steering of the hub motor
  • the controller is arranged at the end of the armrest rod.
  • the present invention has the following advantages compared with the prior art:
  • the foldable wheelchair provided by the present invention is provided with a locking mechanism including a locking block, a locking cavity and an unlocking device, and the locking cavity is extended in the left and right directions, so that the locking cavity includes a first locking cavity arranged at the lower end of the backrest bracket and The second locking cavity at the upper end of the rear wheel bracket enables the locking block to be movably arranged in the locking cavity, so that when the locking block is located in the first locking cavity and the second locking cavity at the same time, the locking mechanism is locked.
  • the lock mechanism is unlocked.
  • the lock mechanism has a simple and compact structure.
  • the lock block is driven to move left and right in the lock cavity by the unlocking device, which is convenient to use. It is located inside the rods of the foldable wheelchair without being exposed, so that the locking mechanism has high safety, is not easy to be damaged, and has a long service life, and the foldable wheelchair provided by the present invention has a beautiful appearance and a strong sense of quality.
  • FIG. 1 is a perspective view of a three-dimensional structure of a foldable wheelchair according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a three-dimensional structure of the foldable wheelchair according to the embodiment of the present invention from another perspective;
  • Figure 3 is a schematic side view (unfolded state) of a foldable wheelchair frame according to an embodiment of the present invention
  • Figure 4 is a schematic side view of a foldable wheelchair frame according to an embodiment of the present invention (half-folded state);
  • Figure 5 is a schematic side view of a foldable wheelchair frame (folded state) according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a half split of the back part structure of the foldable wheelchair according to the embodiment of the present invention.
  • FIG. 7 is an enlarged schematic view of A in FIG. 6, that is, an assembly schematic diagram of the locking mechanism in the embodiment of the present invention.
  • Figure 8 is a schematic cross-sectional view of the locking mechanism in the embodiment of the present invention.
  • the front and rear directions, left and right directions, and up and down directions described in the present invention are based on the front and back directions, left and right directions, and up and down directions observed when the user rides in the wheelchair provided by the present invention.
  • this example provides a foldable wheelchair 10, including: a backrest support 100, a rear wheel support 200, a seat mechanism 300, a front wheel support 400, a locking mechanism 500, a front wheel 11 and a rear wheel 12;
  • the upper end of the rear wheel bracket 200 is rotatably connected with the lower end of the backrest bracket 100, the rear wheel 12 is rotatably arranged at the bottom of the rear wheel bracket 200, and the seating mechanism 300 is rotatably arranged on the backrest bracket 100, further
  • the seat mechanism 300 is rotatably arranged on the lower end of the backrest bracket 100.
  • the seat mechanism 300 has a seat surface 302 for the occupant and an extension rod 301 extending forward and downward.
  • the front wheel 11 is rotatably arranged on the front wheel bracket.
  • the front end of the front wheel bracket 400 is rotatably connected with the front end of the extension rod 301
  • the rear end of the extension rod 301 is rotatably connected with the lower end of the backrest bracket 100
  • the rear end of the seat surface 302 is rotatably connected with the backrest bracket.
  • 100 is rotatably connected
  • the rear end of the front wheel bracket 400 is rotatably connected with the rear wheel bracket 200.
  • the front wheel support 400 extends upwards from the front to the rear
  • the rear wheel support 200 extends forwards and upwards from the rear
  • the backrest support 100 extends upwards from the front to the back; wherein, the extension direction of the front wheel support 400 and the horizontal direction have a larger angle.
  • the angle between the extension direction of the backrest bracket 100 and the horizontal direction is relatively large, which is convenient for riding and has a moderate overall height.
  • the foldable wheelchair of this example is transformed from the unfolded state shown in FIG. 3 to the half-folded state shown in FIG.
  • the side 12 is lower than the side of the front wheel 11, and the front wheel and the rear wheel can be supported on the ground, or the front wheel, the rear wheel and other components can be supported on the ground together.
  • the seat mechanism 300 also includes a seat support rod 303.
  • the two ends of the seat support rod 303 are respectively rotatably connected with the lower part of the seat surface 302 and the middle part of the extension rod 301.
  • the The seat brace 303 extends downward from the front to the back; when the foldable wheelchair is about to be folded, the seat brace 303, the extension rod 301 and the seat surface 302 are close to the front wheel support 400.
  • the rotational connection between the front wheel support 400 and the rear wheel support 200 is lower than the rotational connection between the rear wheel support 200 and the backrest support 100; the extension rod 301
  • the rotational connection with the backrest bracket 100 is higher than the rotational connection between the rear wheel bracket 200 and the backrest bracket 100; the rotational connection between the seat surface 302 and the backrest bracket 100 is higher than the rotation connection between the extension rod 301 and the backrest bracket 100.
  • the locking mechanism 500 is arranged between the rear wheel support 200 and the backrest support 100, and is used to lock the relative positions of the rear wheel support 200 and the backrest support 100.
  • the locking mechanism 500 can be unlocked. Folding operation.
  • the locking mechanism 500 includes a locking block 501 and a locking cavity 502 for accommodating the locking block 501.
  • the locking cavity 502 extends in the left-right direction.
  • the locking cavity 502 includes a first locking cavity provided at the lower end of the backrest bracket 100. 5021 and a second locking cavity 5022 arranged at the upper end of the rear wheel bracket 200, the locking block 501 is movably arranged in the locking cavity 502 left and right, and the locking block 501 is located in the first locking cavity 5021 and the second locking cavity 5022 at the same time
  • the locking mechanism 500 is locked, when the locking block 501 is only located in the first locking cavity 5021 or the second locking cavity 5022, the locking mechanism 500 is unlocked.
  • the lower end of the backrest bracket 100 is provided with a blind hole 101
  • the inner wall of the blind hole 101 is provided with a first locking groove 1011
  • the first locking groove 1011 has four , Are evenly distributed on the inner wall of the blind hole 101, and distributed at equal intervals along the circumferential direction of the blind hole 101, the cavity in the first locking groove 1011 and the cavity in the blind hole 101 together constitute the first locking cavity 5021;
  • the upper end of the rear wheel bracket 200 is provided with a through hole 201.
  • the inner wall of the through hole 201 is provided with a second locking groove 2011.
  • the cavities in the second locking groove 2011 and the cavities in the through hole 201 together form the second locking cavity 5022.
  • the rear wheel bracket 200 is located on one side of the backrest bracket 100, so that the through hole 201 and the blind
  • the holes 101 are aligned so that the locking cavity 502 is located inside the two rods of the backrest support 100 and the rear wheel support 200.
  • the locking block 501 is cylindrical, and the outer circumferential surface of the locking block 501 is evenly distributed with four locking teeth 5011.
  • the locking tooth 5011 matches the first locking groove 1011 and the second locking groove 2011.
  • the locking mechanism 500 is locked, and the locking tooth 5011 is only inserted into the first locking groove.
  • the locking groove 1011 or the second locking groove 2011 is locked, the locking mechanism 500 is unlocked.
  • the first locking groove 1011, the second locking groove 2011, and the locking teeth 5011 respectively extend in the left and right directions, the axis line of the blind hole 101 coincides with the axis line of the through hole 201, and the opening of the blind hole 101 Extending into the through hole 201 forms a rotating shaft for the rear wheel bracket 200 to rotate relative to the backrest bracket 100.
  • the locking mechanism 500 further includes a spring 504, one end of the spring 504 is pressed against the bottom wall of the blind hole 101, the other end of the spring 504 is pressed against the side wall of the locking block 501 close to the blind hole 101, and the spring 504 has a driving force
  • the locking block 501 tends to move in a direction away from the blind hole 101, and the setting of the spring 504 can facilitate the resetting of the locking mechanism 500, so that the locking mechanism tends to be locked.
  • the locking block 501 in this example is provided with a receiving groove, and one end of the spring 504 is arranged in the receiving groove, which is beneficial to the stability of the spring 504 and the effect of the force on the locking block 501.
  • the direction is along the left and right direction to reduce the offset, thereby ensuring the better use of the locking mechanism 500.
  • the locking mechanism 500 further includes an unlocking device for driving the locking block 501 to move left or right in the locking cavity 502.
  • the unlocking device includes a rotatable unlocking handle 503.
  • the unlocking handle 503 is rotated (can be Rotate up or down, you can use manual manual or foot pedaling), can push the locking block 501 to move left or right, specifically, the unlocking handle 503 and the backrest bracket 100 are separately provided on both sides of the rear wheel bracket 200, the unlocking lift
  • the 503 is rotatably arranged on the rear wheel bracket 200, the end 5031 of the unlocking handle extends into the through hole 201 to form a rotation axis of the unlocking handle 503 relative to the rear wheel bracket 200, and the rotation axis of the unlocking handle 503
  • the line coincides with the axis line of the through hole 201, the end 5031 of the unlocking handle has an inclined surface 5032, the inclined surface 5032 and one end surface of the locking block 501 (the locking block 501 can be provided with a
  • the left and right sides of the foldable wheelchair are provided with a locking block 501 and a locking cavity 502 for accommodating the locking block 501 and other corresponding structures, but in this example, only one unlocking handle 503 is required, for example,
  • the unlocking handle 503 is set at the middle position of the rear wheel bracket 200, so that the two ends of an unlocking handle 503 can unlock the locking cooperation relationship on the left and right sides respectively. Therefore, for the locking cooperation structure on the left, the unlocking The inclined surface on the left end of the handle 503 will push the locking block on the left to move to the left in the left locking cavity when the unlock handle 503 rotates to unlock. The inclined surface on the right end of the unlock handle 503 will be unlocked when the unlock handle 503 is rotated.
  • the locking mechanism 500 described in this embodiment can also be applied.
  • the inclined surface 5032 and the locking block 501 are in contact with the top block 505, that is, the unlocking handle 503 is moved by driving the top block 505 to drive the locking block 501 in the locking cavity.
  • 502 moves to the left or right, and the versatility of the locking mechanism 500 is enhanced by replacing the top block 505 with different lengths.
  • the top block 505 of this example includes a top block body 5051, a column 5052 disposed on one side of the top block body 5051 and opposed to the locking block 501, and another column 5052 disposed on the top block body 5051.
  • Protrusions 5053 that cooperate with the end of the unlocking handle 503 with a slope 5032 to realize movement; wherein, the end of the unlocking handle 503 in this example is also formed with a relief space 5033 opposite to the slope 5032
  • the protrusion 5053 contacts the inclined surface 5032, the unlocking handle 503 rotates, and the contact point where the protrusion 5053 contacts the inclined surface 5032 moves (left or right), so that the protrusion 5053 is pushed.
  • the unlocking handle 503 of this example includes an operating rod for the operator to operate, and two connecting rods respectively formed on the left and right sides of the operating rod. One end of the connecting rod is connected to the operating rod. The other end cooperates with the top block 505 to achieve unlocking, and the connecting rod is roughly L-shaped.
  • a blocking stopper 2012 is also provided in the middle of the through hole 201, one side of the blocking stopper 2012 It is attached to the end of the second locking groove 2011 away from the first locking groove 1011.
  • the blocking block 2012 also forms pores for the upright 5052 of the top block 505 to pass through. The number of pores is determined according to the number of the upright 5052, which is 4 in this example. Specifically, as shown in FIG. 8, the blocking block 2012 roughly divides the second locking cavity 5022 into two areas. The left area and the corresponding structure are matched with the locking block 501, and the right area is for the top block 505 and other components. use.
  • the locking structure 500 is unlocked, that is, the locking mechanism 500 is unlocked by rotating the unlocking handle 503, and then the external force applied to the unlocking handle 503 is not removed
  • the locking mechanism can still be kept in the unlocked state (the locking tooth 5011 escapes from the inner cavity of the second locking groove 2011 and abuts against the second locking groove 2011 on the outer wall facing the locking block 501, and then remain unlocked); in this example, the rotation angle of the rear wheel support 200 relative to the front wheel support 400 is less than or equal to 90°.
  • the locking mechanism 500 When the foldable wheelchair 10 is in the folded state, the locking mechanism 500 is always in Unlocked state; when the foldable wheelchair 10 transitions from the folded state to the unfolded state, the backrest bracket 100 is pulled up and back, and the rear wheel bracket 200 rotates downward and backward. When the rear wheel bracket 200 and the backrest bracket 100 are relative to the front wheel bracket 400 When respectively rotated to the initial deployment position, the locking tooth 5011 is directly opposite to the inner cavity of the second locking groove 2011, and the locking tooth 5011 enters the inner cavity of the second locking groove 2011 under the action of the spring. At this time, the locking mechanism 500 is in The lock is reset under the action of the spring, and the unlocking handle 503 returns to the initial position under the action of the top block 505.
  • the foldable wheelchair 10 provided in this example also includes a through bolt 800 for preventing the rear wheel bracket 200 from moving away from the backrest bracket 100 in the left and right direction.
  • the opening of the block 501, the middle of the spring, the blind hole, the opening on the backrest bracket 100, and are fixed to the backrest bracket 100 by nuts, and the end of the through bolt 800 close to the blocking block 2012 also extends into the top block 505
  • the axis of the through bolt 800 coincides with the axis of rotation of the rear wheel bracket 200 relative to the backrest bracket 100, that is, the through bolt 800 can also play a role as a rotation axis;
  • the above arrangement makes the backrest support 100, the rear wheel support 200, the locking block 501, the spring and other components more stable with each other, and the combination is more compact and stable, which can avoid the separation of components during the folding and unfolding process, and improve
  • the operability and reusability of the foldable wheelchair 10 in this example reduces the probability of damage.
  • the foldable wheelchair 10 provided in this example further includes a backrest plate 601, a footrest 602, a footrest mounting rod 6021 and an armrest rod 603 fixed on the front wheel bracket 400, wherein ,
  • the backrest plate 601 is rotatably arranged on the backrest frame 100
  • the footrest 602 is rotatably arranged on the footrest mounting rod 6021
  • the armrest rod 603 is rotatably arranged on the backrest frame 100
  • the armrest rod 603 is located on the seat mechanism Above 300
  • the upper surface of the armrest rod 603 is parallel to the seat surface 302 of the seat mechanism 300.
  • the backrest bracket 100 may be composed of a plurality of mutually detachable backrest struts, which facilitates assembly; as the surface 302, the armrest rod 603 can be rotatably connected with the backrest strut through a rotating shaft.
  • the foldable wheelchair 10 provided in this example further includes a hub motor 701, a battery box 702, and a controller 703.
  • the hub motor 701 is arranged on the rear wheel 12, and the hub motor 701 is used to drive the rear wheels. 12 rotation, the rotation axis line of the output shaft of the hub motor 701 coincides with the rotation axis line of the rear wheel 12.
  • the battery box 702 is detachably arranged on the rear wheel bracket 200, and the battery box 702 is located on the seat surface of the seat mechanism 300 Below 302, the center of gravity of the foldable wheelchair 10 is lowered to improve its stability, and the battery box 702 can be easily disassembled.
  • the controller 703 is used to control the rotation speed and steering of the hub motor 701.
  • the controller 703 is set on the armrest 603 The end is convenient for the occupant to operate.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Handcart (AREA)

Abstract

本发明提供的可折叠轮椅，通过设置包括锁定块、锁定腔和解锁装置的锁定机构，并使锁定腔沿左右方向延伸，使锁定腔包括设置在靠背支架下端部的第一锁定腔和设置在后轮支架上端部的第二锁定腔，使锁定块可左右移动地设置在锁定腔内，实现了在锁定块同时位于第一锁定腔内和第二锁定腔内时，锁定机构锁定，在锁定块仅位于第一锁定腔内或第二锁定腔内时，锁定机构解锁，该锁定机构结构简单紧凑，通过解锁装置驱动锁定块在锁定腔内左右移动，使用方便，由于锁定块和锁定腔的配合位于所述可折叠轮椅的杆件内部，没有裸露在外，使得锁定机构安全性高、不易损坏、使用寿命长，并使得本发明提供的可折叠轮椅外观美观、高级感强。

Description

可折叠轮椅 技术领域
本发明涉及医疗器械领域，具体涉及一种可折叠轮椅。
背景技术
在对患者的治疗和康复过程中，特别是对于无法独立行走的患者，通常采用坐轮椅的方式替代行走，这样能够使患者得到较好的治疗和康复，并且方便患者的日常生活。
现有的轮椅多采用固定结构的椅子架设在一对滚轮的转轴上制作而成，滚轮的直径较大，使得滚轮的上部能够方便的被使用者的手部够到，使用者通过手部转动滚轮使轮椅前进或后退，这种轮椅无法折叠，需要占用较大的空间，市场上也有一些可折叠的轮椅，但这些轮椅往往具有多个用于锁定不同部件的锁定机构，解锁时，需要在多个位置进行解锁后才能折叠轮椅，使用非常不便，并且，锁定机构的配合结构大多裸露在外，不仅存在安全隐患，也使得锁定机构易损坏，使用寿命短，还严重影响轮椅的外观，使轮椅的高级感差。
发明内容
本发明的目的是为了克服现有技术的缺点，提供一种可折叠轮椅，该轮椅的锁定机构简单紧凑、使用方便，锁定机构的配合结构位于杆件内部，安全性高、不易损坏、使用寿命长、外观美观、高级感强。
为实现上述目的，本发明提供的技术方案是：
一种可折叠轮椅，包括：
靠背支架；
后轮支架，所述后轮支架的上端部与所述靠背支架的下端部相转动连接，所述后轮支架的底部设置有后轮；
座位机构，所述座位机构可转动地设置在所述靠背支架上,所述座位机构具有向前下方延伸的延伸杆；
前轮支架，所述前轮支架的底部设置有前轮，所述前轮支架的前端部与所述延伸杆的前端部相转动连接，所述前轮支架的后端部与所述后轮支架相转动连接；
用于将所述后轮支架和所述靠背支架的相对位置锁定的锁定机构；
所述锁定机构包括锁定块和用于容纳所述锁定块的锁定腔，所述锁定腔沿左右方向延伸，所述锁定腔包括设置在靠背支架下端部的第一锁定腔和设置在后轮支架上端部的第二锁定腔，所述锁定块可左右移动地设置在所述锁定腔内，在所述锁定块同时位于所述第一锁定腔内和所述第二锁定腔内时，所述锁定机构锁定，在所述锁定块仅位于所述第一锁定腔内或所述第二锁定腔内时，所述锁定机构解锁，所述锁定机构还包括用于驱动所述锁定块在所述锁定腔内左右移动的解锁装置。
所述靠背支架的下端部开设有盲孔，所述盲孔的内壁上设置有第一锁定槽，所述第一锁定腔包括所述第一锁定槽内的空腔，所述后轮支架的上端部设置有通孔，所述通孔的内壁上设置有第二锁定槽，所述第二锁定腔包括所述第二锁定槽内的空腔。
进一步优选地，所述锁定块的外壁上设置有锁定齿，在所述锁定齿同时插入所述第一锁定槽和所述第二锁定槽时，所述锁定机构锁定，在所述锁定齿仅插入所述第一锁定槽或所述第二锁定槽时，所述锁定机构解锁。
进一步优选地，所述通孔内设置有阻隔挡块，所述阻隔挡块的一侧面贴合在所述第二锁定槽远离所述第一锁定槽的端部，所述阻隔挡块用于防止所述锁定块在所述第二锁定槽内移动时脱离所述第二锁定槽。
进一步优选地，所述盲孔的轴心线与所述通孔的轴心线相重合，所述后轮支架相对于所述靠背支架转动的转动轴由所述盲孔的孔口部伸入所述通孔内形成或由所述通孔的孔口部伸入所述盲孔内形成。
进一步优选地，所述锁定机构还包括弹簧，所述弹簧的一端抵紧在所述盲孔的底壁上，所述弹簧的另一端抵紧在所述锁定块靠近所述盲孔的侧壁上，所述弹簧具有驱使所述锁定块向远离所述盲孔的方向移动的趋势。
进一步优选地，所述解锁装置包括可转动的解锁提把，所述解锁提把的端部具有一斜面，该斜面与所述锁定块的一端面相接触，在所述解锁提把转动时，该斜面与所述锁定块的接触点向左和/或向右移动，推动 所述锁定块在所述锁定腔内向左和/或向右移动。
进一步优选地，所述解锁提把可转动地设置在所述后轮支架上，所述解锁提把的端部伸入所述通孔内构成所述解锁提把相对于所述后轮支架转动的转动轴，所述解锁提把的转动轴心线与所述通孔的轴心线相重合。
进一步优选地，所述可折叠轮椅还包括靠背板、脚踏板和扶手杆，所述靠背板可转动地设置在所述靠背支架上，所述脚踏板可转动地设置在脚踏板安装杆上，所述脚踏板安装杆的端部固设于所述前轮支架上，所述扶手杆可转动地设置在所述靠背支架上，所述扶手杆位于所述座位机构的上方。
进一步优选地，所述可折叠轮椅还包括轮毂电机、电池箱和控制器，所述轮毂电机设置在所述后轮上，所述轮毂电机用于驱动所述后轮转动，所述轮毂电机输出轴的转动轴心线与所述后轮的转动轴心线相重合，所述电池箱可拆卸地设置在所述后轮支架上，所述控制器用于控制所述轮毂电机的转速及转向，所述控制器设置在所述扶手杆的端部。
由于上述技术方案的运用，本发明与现有技术相比具有下列优点：
本发明提供的可折叠轮椅，通过设置包括锁定块、锁定腔和解锁装置的锁定机构，并使锁定腔沿左右方向延伸，使锁定腔包括设置在靠背支架下端部的第一锁定腔和设置在后轮支架上端部的第二锁定腔，使锁定块可左右移动地设置在锁定腔内，实现了在锁定块同时位于第一锁定腔内和第二锁定腔内时，锁定机构锁定，在锁定块仅位于第一锁定腔内或第二锁定腔内时，锁定机构解锁，该锁定机构结构简单紧凑，通过解锁装置驱动锁定块在锁定腔内左右移动，使用方便，由于锁定块和锁定腔的配合位于所述可折叠轮椅的杆件内部，没有裸露在外，使得锁定机构安全性高、不易损坏、使用寿命长，并使得本发明提供的可折叠轮椅外观美观、高级感强。
附图说明
图1为本发明实施例可折叠轮椅一个视角的立体结构示意图；
图2为本发明实施例可折叠轮椅另一个视角的立体结构示意图；
图3为本发明实施例可折叠轮椅车架的侧视示意图(展开状态)；
图4为本发明实施例可折叠轮椅车架的侧视示意图(半折叠状态)；
图5为本发明实施例可折叠轮椅车架的侧视示意图(折叠状态)；
图6为本发明实施例可折叠轮椅的背面部分结构的半拆分示意图；
图7是图6中A处的放大示意图，即本发明实施例中锁定机构的组装示意图；
图8是本发明实施例中锁定机构的剖视示意图；
其中：10.可折叠轮椅；11.前轮；12.后轮；100.靠背支架；101.盲孔；1011.第一锁定槽；200.后轮支架；201.通孔；2011.第二锁定槽；2012.阻隔挡块；300.座位机构；301.延伸杆；302.座位面；303.座位撑杆；400.前轮支架；500.锁定机构；501.锁定块；5011.锁定齿；502.锁定腔；5021.第一锁定腔；5022.第二锁定腔；503.解锁提把；5031.端部；5032.斜面；5033.让位空隙；504.弹簧；505.顶块；5051.顶块本体；5052.立柱；5053.凸起；601.靠背板；602.脚踏板；6021.脚踏板安装杆；603.扶手杆；701.轮毂电机；702.电池箱；703.控制器；800.贯穿螺栓。
具体实施方式
下面结合附图对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
本发明描述的前后方向、左右方向和上下方向是基于使用者乘坐在本发明提供的轮椅中时观察到的前后方向、左右方向和上下方向。
如图1-8所示，本例提供一种可折叠轮椅10，包括：靠背支架100、后轮支架200、座位机构300、前轮支架400、锁定机构500、前轮11和后轮12；
其中，后轮支架200的上端部与靠背支架100的下端部相转动连接，后轮12可转动地设置在后轮支架200的底部，座位机构300可转动地设置在靠背支架100上，进一步将座位机构300转动地设置在靠背支架100的下端部上，座位机构300具有用于供乘坐者乘坐的座位面302和向前下方延伸的延伸杆301，前轮11可转动地设置在前轮支架400的底部， 前轮支架400的前端部与延伸杆301的前端部相转动连接，延伸杆301的后端部与靠背支架100的下端部相转动连接，座位面302的后端部与靠背支架100相转动连接，前轮支架400的后端部与后轮支架200相转动连接，在后轮支架200相对于靠背支架100向靠近前轮支架400的方向向前上方转动时，能够带动座位机构300、靠背支架100向靠近前轮支架400的方向靠拢(向前下方转动)，使可折叠轮椅10变换为折叠状态。
本例中，前轮支架400自前向后向上延伸，后轮支架200自后向前向上延伸，靠背支架100自前向后向上延伸；其中，前轮支架400的延伸方向与水平方向的夹角较小，而靠背支架100的延伸方向与水平方向的夹角相对较大，便于乘坐且整体高度适中。
参见图3至图5，本例的可折叠轮椅由图3所示的展开状态转变至图4所示的半折叠状态，此过程中，后轮支架200相对于靠背支架100向靠近前轮支架400的方向转动，座位机构300、靠背支架100向靠近前轮支架400的方向靠拢，最终呈现如图5所示的完全折叠状态，形成从侧面看大致中间高两侧低的形态，且后轮12一侧相较于前轮11一侧更低，可以依靠前轮和后轮支撑于地面，或者依靠前轮、后轮和其它部件一起支撑于地面。
如图3所示，座位机构300还包括座位撑杆303，座位撑杆303的两端分别与座位面302的下部、延伸杆301的中部相转动连接，当可折叠轮椅处于展开状态时，该座位撑杆303自前向后向下延伸；当可折叠轮椅要折叠时，该座位撑杆303、延伸杆301与座位面302一起向前轮支架400靠拢。
本例中，如图1所示，当可折叠轮椅处于展开状态时，前轮支架400与后轮支架200的转动连接处低于后轮支架200与靠背支架100的转动连接处；延伸杆301与靠背支架100的转动连接处高于后轮支架200与靠背支架100的转动连接处；座位面302与靠背支架100的转动连接处高于延伸杆301与靠背支架100的转动连接处。
本例中，锁定机构500设置在后轮支架200和靠背支架100之间，并用于将后轮支架200和靠背支架100的相对位置锁定，当需要折叠轮 椅时，将锁定机构500解锁即可进行折叠操作。
具体地，本例中，锁定机构500包括锁定块501和用于容纳锁定块501的锁定腔502，锁定腔502沿左右方向延伸，锁定腔502包括设置在靠背支架100下端部的第一锁定腔5021和设置在后轮支架200上端部的第二锁定腔5022，锁定块501可左右移动地设置在锁定腔502内，在锁定块501同时位于第一锁定腔5021内和第二锁定腔5022内时，锁定机构500锁定，在锁定块501仅位于第一锁定腔5021内或第二锁定腔5022内时，锁定机构500解锁。
进一步地，本例中，如图7、图8所示，靠背支架100的下端部开设有盲孔101，盲孔101的内壁上设置有第一锁定槽1011，第一锁定槽1011有四个，均布于盲孔101的内壁上，且沿盲孔101的圆周方向等间隔分布，第一锁定槽1011内的空腔和盲孔101内的空腔共同构成第一锁定腔5021；
后轮支架200的上端部设置有通孔201，通孔201的内壁上设置有第二锁定槽2011，第二锁定槽2011有四个，均布于通孔201的内壁，且沿通孔201的圆周方向等间隔分布，第二锁定槽2011内的空腔和通孔201内的空腔共同构成第二锁定腔5022，后轮支架200位于靠背支架100的一侧，使通孔201和盲孔101相对齐，使得锁定腔502位于靠背支架100和后轮支架200这两个杆件的内部，锁定块501为圆柱形，锁定块501的外圆周面上均布有四个锁定齿5011，锁定齿5011与第一锁定槽1011和第二锁定槽2011相匹配，在锁定齿5011同时插入第一锁定槽1011和第二锁定槽2011时，锁定机构500锁定，在锁定齿5011仅插入第一锁定槽1011或第二锁定槽2011时，锁定机构500解锁。
本例中，第一锁定槽1011、第二锁定槽2011和锁定齿5011分别沿左右方向延伸，盲孔101的轴心线与通孔201的轴心线相重合，盲孔101的孔口部伸入通孔201内形成后轮支架200相对于靠背支架100转动的转动轴。
进一步地，锁定机构500还包括弹簧504，弹簧504的一端抵紧在盲孔101的底壁上，弹簧504的另一端抵紧在锁定块501靠近盲孔101的 侧壁上，弹簧504具有驱使锁定块501向远离盲孔101的方向移动的趋势，设置弹簧504能够便于锁定机构500复位，使锁定机构趋向于锁定。
具体地，如图8所示，本例中的锁定块501上开设有容纳槽，弹簧504的一端设置在容纳槽内，有利于弹簧504的稳定性以及使对锁定块501产生的作用力的方向沿左右方向，减少偏移，进而确保锁定机构500的较好使用。
本例中，锁定机构500还包括用于驱动锁定块501在锁定腔502内向左或向右移动的解锁装置，该解锁装置包括可转动的解锁提把503，解锁提把503在转动时(可以向上或向下转动，可以采用人工手动或脚踩踏)，能够推动锁定块501向左或向右移动，具体地，解锁提把503与靠背支架100分设于后轮支架200的两侧，解锁提把503可转动地设置在后轮支架200上，解锁提把的端部5031伸入通孔201内构成解锁提把503相对于后轮支架200转动的转动轴，解锁提把503的转动轴心线与通孔201的轴心线相重合，解锁提把的端部5031具有一斜面5032，该斜面5032与锁定块501的一端面(可以在锁定块501上设置与斜面5032相配合的部分)相接触，在解锁提把503转动时，该斜面5032与锁定块501的接触点向左或向右移动，从而推动锁定块501在锁定腔502内向左或向右移动。
具体地，本例中可折叠轮椅的左右两侧均设置有锁定块501和用于容纳锁定块501的锁定腔502以及其它相应的结构，但是本例中仅需一个解锁提把503，例如将该解锁提把503设置在后轮支架200的中部位置，如此即可通过一个解锁提把503的两端分别解锁左右两侧的锁定配合关系，因此，对于左侧的锁定配合结构来说，解锁提把503左端部具有的斜面在解锁提把503转动时会推动左侧的锁定块在左侧的锁定腔内向左移动进而解锁，解锁提把503右端部具有的斜面在解锁提把503转动时会推动右侧的锁定块在右侧的锁定腔内向右移动进而解锁。在本实施例中，为了适应不同尺寸的后轮支架200，尤其是通孔201的轴向长度变化较大时，本例所述的锁定机构500也能适用，在斜面5032和锁定块501之间还设置有顶块505，该顶块505也可左右移动，斜面5032与锁定块 501通过顶块505相接触，也即解锁提把503通过驱动顶块505移动进而驱动锁定块501在锁定腔502内向左或向右移动，通过更换不同长度的顶块505以增强锁定机构500的通用性。
进一步地，如图7所示，本例的顶块505包括顶块本体5051、设置在顶块本体5051的一侧且与锁定块501相抵触的立柱5052、设置在顶块本体5051的另一侧且与具有一斜面5032的解锁提把503的端部相配合实现移动的凸起5053；其中，本例中的解锁提把503的端部上还形成有与斜面5032相对的让位空隙5033，当锁定机构解锁时，凸起5053与斜面5032相接触，解锁提把503转动，凸起5053与斜面5032相接触的接触点发生移动(向左或向右)进而使得凸起5053被推动，凸起5053被推动也即表明顶块505被推动，顶块505再通过立柱5052推动锁定块501移动，直至实现解锁；当锁定机构锁定时，凸起5053位于让位空隙5033中，也即解锁提把503并没有对顶块505施加作用力。本例中，参见图1所示，本例的解锁提把503包括供操作者操作的操作杆，以及分别形成在操作杆左右两侧的两个连接杆，该连接杆一端与操作杆连接，另一端与顶块505相配合实现解锁，该连接杆大致呈L型。
本例中，为了防止锁定块501上的锁定齿5011在第二锁定槽2011内移动时脱离第二锁定槽2011，通孔201的中部还设置有阻隔挡块2012，阻隔挡块2012的一侧面贴合在第二锁定槽2011远离第一锁定槽1011的端部。同时该阻隔挡块2012还形成供顶块505的立柱5052通过的孔隙，孔隙的数量根据立柱5052的数量决定，本例中为4个。具体地，如图8所示，该阻隔挡块2012将第二锁定腔5022大致分为两个区域，左侧区域及相应设置的结构与锁定块501配合，右侧区域供顶块505等部件使用。
本例中，当可折叠轮椅10从展开状态转变至折叠状态时，通过解锁锁定结构500，即通过转动解锁提把503使锁定机构500解锁，然后在施加于解锁提把503上的外力没有撤去时使后轮支架200相对前轮支架400转动一定角度，此时即使撤去外力，锁定机构也仍然可保持在解锁状态(锁定齿5011脱离第二锁定槽2011的内腔并抵在第二锁定槽2011的朝 向锁定块501的外壁上，进而保持解锁)；本例中，后轮支架200相对前轮支架400转动的角度小于等于90°，可折叠轮椅10处于折叠状态时，锁定机构500一直处于解锁状态；当可折叠轮椅10从折叠状态转变至展开状态时，向上向后拉起靠背支架100，后轮支架200向下向后转动，当后轮支架200、靠背支架100相对前轮支架400分别转动至初始的展开位置时，锁定齿5011与第二锁定槽2011的内腔正对，并在弹簧的作用使锁定齿5011进入第二锁定槽2011的内腔中，此时锁定机构500在弹簧的作用下复位锁定，解锁提把503在顶块505的作用下回复至初始位置。
本例中，本例提供的可折叠轮椅10还包括用于防止后轮支架200沿左右方向远离靠背支架100的贯穿螺栓800，该贯穿螺栓800依次穿过阻隔挡块2012上的开孔、锁定块501的开孔、弹簧的中部、盲孔、靠背支架100上的开孔，并且通过螺母固定在靠背支架100上，而且该贯穿螺栓800的靠近阻隔挡块2012的一端还伸入顶块505的几个立柱5052之间，同时该贯穿螺栓800的轴心线与后轮支架200相对于靠背支架100的转动轴心线相重合，也即该贯穿螺栓800也能够起到一定的转轴作用；上述设置方式使得靠背支架100、后轮支架200以及锁定块501、弹簧等部件相互之间稳定性更好，结合地更紧凑且稳固，能够避免在折叠与展开过程中出现部件分离等现象，提升本例可折叠轮椅10的可操作性与可重复使用性，降低损坏几率。
本例中，为提高乘坐舒适性，本例提供的可折叠轮椅10还包括靠背板601、脚踏板602、固设于前轮支架400上的脚踏板安装杆6021和扶手杆603，其中，靠背板601可转动地设置在靠背支架100上，脚踏板602可转动地设置在脚踏板安装杆6021上，扶手杆603可转动地设置在靠背支架100上，扶手杆603位于座位机构300的上方，扶手杆603的上表面平行于座位机构300的座位面302。
本例中，如图6所示，靠背支架100可以由多个相互可拆分的靠背支杆组成，有利于组装；作为面302、扶手杆603均可通过转轴与靠背支杆相转动连接。
本例中，为方便移动，本例提供的可折叠轮椅10还包括轮毂电机 701、电池箱702和控制器703，其中，轮毂电机701设置在后轮12上，轮毂电机701用于驱动后轮12转动，轮毂电机701的输出轴的转动轴心线与后轮12的转动轴心线相重合，电池箱702可拆卸地设置在后轮支架200上，电池箱702位于座位机构300的座位面302的下方，降低可折叠轮椅10的重心，提高其稳定性，并且，电池箱702能够方便的进行拆卸，控制器703用于控制轮毂电机701的转速及转向，控制器703设置在扶手杆603的端部，便于乘坐者操作。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (21)

  1. 可折叠轮椅，包括：
    靠背支架；
    后轮支架，所述后轮支架的上端部与所述靠背支架的下端部相转动连接，所述后轮支架的底部设置有后轮；
    座位机构，所述座位机构转动地设置在所述靠背支架上,所述座位机构具有向前下方延伸的延伸杆；
    前轮支架，所述前轮支架的底部设置有前轮，所述前轮支架的前端部与所述延伸杆的前端部相转动连接，所述前轮支架的后端部与所述后轮支架相转动连接；
    用于将所述后轮支架和所述靠背支架的相对位置锁定的锁定机构；
    其特征在于：
    所述锁定机构包括锁定块、用于容纳所述锁定块的锁定腔，所述锁定腔沿左右方向延伸，所述锁定腔包括设置在靠背支架下端部的第一锁定腔和设置在后轮支架上端部的第二锁定腔，所述锁定块能够左右移动地设置在所述锁定腔内；
    所述靠背支架的下端部开设有盲孔，所述盲孔的内壁上设置有具有空腔的第一锁定槽，所述第一锁定腔包括所述第一锁定槽的空腔，所述后轮支架的上端部设置有通孔，所述通孔的内壁上设置有具有空腔的第二锁定槽，所述第二锁定腔包括所述第二锁定槽的空腔；
    所述锁定块的外壁上设置有锁定齿，在所述锁定齿同时插入所述第一锁定槽和所述第二锁定槽时，所述锁定机构锁定，在所述锁定齿仅插入所述第一锁定槽或所述第二锁定槽时，所述锁定机构解锁；
    所述通孔内设置有阻隔挡块，所述阻隔挡块的一侧面贴合在所述第二锁定槽远离所述第一锁定槽的端部，所述阻隔挡块用于防止所述锁定块在所述第二锁定槽内移动时脱离所述第二锁定槽；
    所述盲孔的轴心线与所述通孔的轴心线相重合，所述后轮支架相对于所述靠背支架转动的转动轴由所述盲孔的孔口部伸入所述通孔内形成或由所述通孔的孔口部伸入所述盲孔内形成；
    所述锁定机构还包括弹簧、用于驱动所述锁定块在所述锁定腔内左右移动的解锁装置，所述弹簧的一端抵紧在所述盲孔的底壁上，所述弹簧的另一端抵紧在所述锁定块的靠近所述盲孔的侧壁上，所述弹簧具有驱使所述锁定块向远离所述盲孔的方向移动的趋势；
    所述解锁装置包括转动地设置在所述后轮支架上的解锁提把，所述解锁提把的端部伸入所述通孔内构成所述解锁提把相对于所述后轮支架转动的转动轴，所述解锁提把的转动轴心线与所述通孔的轴心线相重合；所述解锁提把的端部具有一斜面，该斜面与所述锁定块的一端面相接触，在所述解锁提把转动时，该斜面与所述锁定块的接触点向左或向右移动，推动所述锁定块在所述锁定腔内向左或向右移动；
    所述可折叠轮椅还包括靠背板、脚踏板、扶手杆、固设于所述前轮支架上的脚踏板安装杆、轮毂电机、电池箱和控制器，所述靠背板转动地设置在所述靠背支架上，所述脚踏板转动地设置在所述脚踏板安装杆上，所述扶手杆转动地设置在所述靠背支架上，所述扶手杆位于所述座位机构的上方；
    所述轮毂电机设置在所述后轮上，所述轮毂电机用于驱动所述后轮转动，所述轮毂电机输出轴的转动轴心线与所述后轮的转动轴心线相重合，所述电池箱可拆卸地设置在所述后轮支架上，所述控制器用于控制所述轮毂电机的转速及转向，所述控制器设置在所述扶手杆的端部；
    所述可折叠轮椅还包括用于防止所述后轮支架沿左右方向远离所述靠背支架的贯穿螺栓，所述贯穿螺栓的一端设置在所述后轮支架上，另一端通过螺母固定在所述靠背支架上，所述贯穿螺栓依次穿过所述阻隔挡块、所述锁定块、所述弹簧、所述盲孔和所述靠背支架，所述贯穿螺栓的轴心线与所述后轮支架相对于所述靠背支架的转动轴心线相重合。
  2. 可折叠轮椅，包括：
    靠背支架；
    后轮支架，所述后轮支架的上端部与所述靠背支架的下端部相转动连接，所述后轮支架的底部设置有后轮；
    座位机构，所述座位机构转动地设置在所述靠背支架上,所述座位机 构具有向前下方延伸的延伸杆；
    前轮支架，所述前轮支架的底部设置有前轮，所述前轮支架的前端部与所述延伸杆的前端部相转动连接，所述前轮支架的后端部与所述后轮支架相转动连接；
    用于将所述后轮支架和所述靠背支架的相对位置锁定的锁定机构；
    其特征在于：
    所述锁定机构包括锁定块和用于容纳所述锁定块的锁定腔，所述锁定腔沿左右方向延伸，所述锁定腔包括设置在靠背支架下端部的第一锁定腔和设置在后轮支架上端部的第二锁定腔，所述锁定块能够左右移动地设置在所述锁定腔内，在所述锁定块同时位于所述第一锁定腔内和所述第二锁定腔内时，所述锁定机构锁定，在所述锁定块仅位于所述第一锁定腔内或所述第二锁定腔内时，所述锁定机构解锁。
  3. 根据权利要求2所述的可折叠轮椅，其特征在于，所述靠背支架的下端部开设有盲孔，所述盲孔的内壁上设置有具有空腔的第一锁定槽，所述第一锁定腔包括所述第一锁定槽的空腔，所述后轮支架的上端部设置有通孔，所述通孔的内壁上设置有具有空腔的第二锁定槽，所述第二锁定腔包括所述第二锁定槽的空腔；
    所述锁定块的外壁上设置有锁定齿，在所述锁定齿同时插入所述第一锁定槽的空腔和所述第二锁定槽的空腔时，所述锁定机构锁定，在所述锁定齿仅插入所述第一锁定槽的空腔或所述第二锁定槽的空腔时，所述锁定机构解锁。
  4. 根据权利要求3所述的可折叠轮椅，其特征在于，所述第一锁定槽、所述第二锁定槽、所述锁定齿分别具有多个且数量相同。
  5. 根据权利要求4所述的可折叠轮椅，其特征在于，多个所述第一锁定槽沿所述盲孔的圆周方向等间隔分布，多个所述第二锁定槽沿所述通孔的圆周方向等间隔分布；
    所述锁定块呈圆柱状，多个所述锁定齿沿所述锁定块的圆周方向等间隔分布。
  6. 根据权利要求3所述的可折叠轮椅，其特征在于，所述第一锁定 槽、所述第二锁定槽和所述锁定齿分别沿左右方向延伸。
  7. 根据权利要求3所述的可折叠轮椅，其特征在于，所述通孔内设置有阻隔挡块，所述阻隔挡块的一侧面贴合在所述第二锁定槽远离所述第一锁定槽的端部，所述阻隔挡块用于防止所述锁定块在所述第二锁定槽内移动时脱离所述第二锁定槽。
  8. 根据权利要求3所述的可折叠轮椅，其特征在于，所述盲孔的轴心线与所述通孔的轴心线相重合，所述后轮支架相对于所述靠背支架转动的转动轴由所述盲孔的孔口部伸入所述通孔内形成或由所述通孔的孔口部伸入所述盲孔内形成。
  9. 根据权利要求3所述的可折叠轮椅，其特征在于，所述锁定机构还包括倾向于使所述锁定齿同时插入所述第一锁定槽的空腔和所述第二锁定槽的空腔中的复位件。
  10. 根据权利要求9所述的可折叠轮椅，其特征在于，所述复位件为伸缩方向为左右方向的弹性件，所述弹性件的一端与所述锁定齿固定连接，所述弹性件的另一端固定设置于所述盲孔内或固定设置于所述通孔内。
  11. 根据权利要求3所述的可折叠轮椅，其特征在于，所述锁定机构还包括弹簧，所述弹簧的一端抵紧在所述盲孔的底壁上，所述弹簧的另一端抵紧在所述锁定块的靠近所述盲孔的侧壁上，所述弹簧具有驱使所述锁定块向远离所述盲孔的方向移动的趋势。
  12. 根据权利要求3所述的可折叠轮椅，其特征在于，所述锁定机构还包括用于驱动所述锁定块在所述锁定腔内左右移动的解锁装置。
  13. 根据权利要求12所述的可折叠轮椅，其特征在于，所述解锁装置包括转动地设置的解锁提把，所述解锁提把的端部具有一斜面，该斜面与所述锁定块的一端面相接触，在所述解锁提把转动时，该斜面与所述锁定块的接触点向左或向右移动，推动所述锁定块在所述锁定腔内向左或向右移动。
  14. 根据权利要求13所述的可折叠轮椅，其特征在于，所述解锁提把转动地设置在所述后轮支架上，所述解锁提把的端部伸入所述通孔内 构成所述解锁提把相对于所述后轮支架转动的转动轴，所述解锁提把的转动轴心线与所述通孔的轴心线相重合。
  15. 根据权利要求13所述的可折叠轮椅，其特征在于，所述解锁装置还包括设置在所述解锁提把与所述锁定块之间且可左右移动的顶块，所述解锁提把通过驱动所述顶块移动进而驱动所述锁定块在所述锁定腔内向左或向右移动。
  16. 根据权利要求15所述的可折叠轮椅，其特征在于，所述顶块包括顶块本体、设置在所述顶块本体的一侧且与所述锁定齿相抵触的立柱、设置在所述顶块本体的另一侧且与具有一斜面的所述解锁提把的端部相配合实现移动的凸起。
  17. 根据权利要求16所述的可折叠轮椅，其特征在于，所述解锁提把的端部上还形成有与所述斜面相对的让位空隙。
  18. 根据权利要求17所述的可折叠轮椅，其特征在于，当所述锁定机构解锁时，所述凸起与所述斜面相接触；当所述锁定机构锁定时，所述凸起位于所述让位空隙中。
  19. 根据权利要求2-18中任意一种所述的可折叠轮椅，其特征在于，所述可折叠轮椅还包括靠背板、脚踏板、固设于所述前轮支架上的脚踏板安装杆和扶手杆，所述靠背板转动地设置在所述靠背支架上，所述脚踏板转动地设置在所述脚踏板安装杆上，所述扶手杆转动地设置在所述靠背支架上，所述扶手杆位于所述座位机构的上方。
  20. 根据权利要求19所述的可折叠轮椅，其特征在于：所述可折叠轮椅还包括轮毂电机、电池箱和控制器，所述轮毂电机设置在所述后轮上，所述轮毂电机用于驱动所述后轮转动，所述轮毂电机输出轴的转动轴心线与所述后轮的转动轴心线相重合，所述电池箱可拆卸地设置在所述后轮支架上，所述控制器用于控制所述轮毂电机的转速及转向，所述控制器设置在所述扶手杆的端部。
  21. 根据权利要求2所述的可折叠轮椅，其特征在于：所述可折叠轮椅还包括用于防止所述后轮支架沿左右方向远离所述靠背支架的贯穿螺栓，所述贯穿螺栓的一端设置在所述后轮支架上，另一端通过螺母 固定在所述靠背支架上，所述贯穿螺栓分别穿过所述后轮支架、所述锁定机构和所述靠背支架，所述贯穿螺栓的轴心线与所述后轮支架相对于所述靠背支架的转动轴心线相重合。
PCT/CN2021/075506 2020-04-14 2021-02-05 可折叠轮椅 WO2021208573A1 (zh)

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CN110179602A (zh) * 2019-05-10 2019-08-30 南京康尼智能技术有限公司 可折叠轮椅
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CN209422282U (zh) * 2018-03-13 2019-09-24 南京康尼智能技术有限公司 一种折叠轮椅
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