JP5706683B2 - Back-folding type reclining wheelchair - Google Patents

Description

  The present invention relates to a reclining wheelchair in which a backrest frame can be bent up and down according to the posture of a wheelchair occupant. More specifically, the present invention relates to a reclining wheelchair that can easily change the angle of the backrest frame of the wheelchair according to the disease state of the occupant of the wheelchair.

  The reclining of a reclining wheelchair is generally tilted backwards with the backrest in a vertical state, but the seated person using the wheelchair does not have a uniform body shape depending on the state of the disease, and the backrest is vertical with the backrest in the vertical state. If you fall down, you may become unnatural and may not relax. Various methods for changing the angle of the backrest frame when the wheelchair is reclined for such a occupant have been considered.

  The reclining wheelchair described in Patent Document 1 is disclosed in paragraph [0026] of Japanese Patent Application Laid-Open No. 2005-279085 “That is, the rotation centers of the backrests 96 and 96a are different, and the backrest 96a simply tilts in FIG. 9B. On the other hand, in the present invention (see FIG. 9A), the backrest 96 is tilted while being pulled downward with respect to the seat frame 94. On the contrary, when the backrest 96 is raised, the backrest 96 is raised. It stands up so as to extend upward with respect to the seat frame 94. By such an action, in the present invention, the backrest follows the back of the user and reclines, and the back is displaced from the backrest. "A reclining wheelchair is disclosed.

  In Patent Document 2, paragraph [0014] “A reclining type nursing wheelchair 100 having a tilt mechanism according to the present invention includes a backrest having elasticity on a backrest frame 11 having a gripping portion 26 as shown in FIG. This is a reclining nursing wheelchair capable of attaching a resilient seat from the frame 12 to the footrest support frame 13. The reclining nursing wheelchair 100 of the present invention has a tilt mechanism and tilts the backrest frame 11. The tilt mechanism frame 24 pushes up the seat frame 12 in conjunction with the backrest frame 11 and pushes up the footrest support frame 13 so that the footrest support frame 13 rises as the backrest frame 11 falls down. And footrest support frame 13 The push-up mechanism can be achieved by pulling the left and right levers 27a and 27b of the operating portion 27 of the back frame 11. The footrest support frame 13 is composed of an inner pipe 13a and an outer pipe 13b, and the height and disease of the cared person. The length of the footrest support frame 13 can be adjusted according to the state of the footrest 14 to make the footrest 14 an appropriate position.When the length of the footrest support frame 13 is adjusted, an adjustment hole provided in the push-out auxiliary frame 43b By changing the fixing portion 13c of the footrest support frame 13 attached to 43a to an appropriate position, the footrest 14 can be made flat when reclining. "A reclining wheelchair is disclosed.

  In the reclining wheelchair of Patent Document 3, paragraph [0021] “Next, the operation when the care wheelchair 10 is used will be described with reference to FIG. 3. The person who is difficult to walk in a back or stooped state first, the cared person 30 sits deeply on the seat 14 and leans on the backrest, where the upper backrest 18 and the lower backrest 16 are at a straight angle. When the backrest is formed, the lower back portion 30a of the care recipient 30 is supported by the lower backrest portion 16, but the circular back apex portion 30b, the upper back portion 30c, and the rear head portion 30d are located between the upper backrest portion 16 and the backrest portion 16. Therefore, the cared person 30 cannot hold the posture stably and is in a state of uncomfortable sitting. "And paragraph [0022]" Therefore, the shape of the back of the cared person 30 is reduced. In addition, the caregiver adjusts the mounting angle of the upper backrest portion 18. First, the screw of the fixing member 20a is loosened so that the upper backrest portion 18 can swing around the rotary shaft 20, and the upper backrest portion 18 is moved forward. Then, when the upper backrest portion 18 comes into contact with the rounded top portion 30b, the upper back portion 30c, and the head portion 30b of the care recipient 30, the upper back portion 18 is tightened by tightening the screws of the fixing member 20a. As a result, the lower back portion 30a, the back apex portion 30b, the upper back portion 30c and the rear head portion 30d are supported by the lower backrest portion 16 and the upper backrest portion 18 as a whole, so that the care recipient 30 can The posture is stably maintained and the seat is comfortable. ”A reclining wheelchair is disclosed.

  As described above, various ideas have been devised so that the reclining method of the reclining wheelchair matches the posture of the occupant. For the occupant, the reclining method of Cited Reference 3, that is, the form of bending at the middle of the backrest along the back is desirable, but in order to bend at the middle, the angle of the backrest frame is adjusted separately on the left and right. For this reason, there is a problem that the caregiver has to recline the upper part of the back frame separately on the left and right according to the back of the occupant. Furthermore, when the backrest of the reclining wheelchair is tilted backward, there is a problem that the operation levers of the brake and the reclining are in a low position so that the operation becomes difficult.

JP 2005-279085 A JP 2005-034189 A JP 2009-148371 A

  In view of the above-described facts, the present invention allows the caregiver to easily bend the upper stage of the backrest frame from the back of the reclining wheelchair with respect to the operation method for bending up and down from the middle of the backrest frame of the reclining wheelchair. Provide a reclining wheelchair. Furthermore, a reclining wheelchair in which the angle and height of the brake and reclining operation levers can be adjusted so that the brake and reclining operation levers can be easily handled even after the backrest of the reclining wheelchair is bent backwards.

  A fulcrum unit that can change the vertical angle of the backrest frame of the reclining wheelchair according to the shape of the disabled passenger is attached to the bent part of the backrest frame, and even after the caregiver performs the reclining operation In order to provide a reclining wheelchair equipped with an operation lever device that can be easily gripped and changed to an easy-to-operate position so that it can be easily operated and braked, it has been intensively studied.

  A feature of the present invention is that a seat part and a reclining back part at the rear part of the seat part are mounted at the center of a wheelchair in which a front wheel is pivotable and a rear wheel is a large wheel, and the frame of the back part is provided. The reclining wheelchair with the backrest frame of the backrest, which is equipped with a grip that can be operated for brake operation and reclining operation at the tip of the backrest, can be bent at the upper and lower stages, and the backrest frame of the backrest section is divided into an upper stage and a lower stage Then, the upper and lower bending angles are determined between the upper and lower halves of the divided frame, and a fulcrum unit with holes for inserting pins is attached to the left and right backrest frames to maintain the determined bending angle. A reclining wheelchair characterized by being installed.

  Another feature of the present invention is a reclining wheelchair characterized in that the fulcrum units attached to the left and right backrest frames are connected by a connecting wire of a connecting member. By connecting the left and right fulcrum units with leather straps, metal chains, bendable metal bars, etc., the caregiver simply pulls the connecting member, and the pins that locked the left and right fulcrum units can be inserted and removed simultaneously. The vertical angle of the backrest frame can be adjusted.

  Another feature of the present invention is that the length of the back frame can be adjusted by inserting the inner tube into the outer tube of the lower back frame of the back frame divided vertically so that the back frame can be expanded and contracted. It is a reclining wheelchair. The lower frame of the backrest frame can be expanded and contracted, and the length of the backrest frame can be adjusted according to the height of the occupant and the state of the disease.

  Another feature of the present invention is a reclining wheelchair characterized in that the position of the operation lever for the reclining operation and the brake operation attached to the front end portions of the left and right backrest frames can be adjusted up and down. The position of the operation lever for the reclining operation and the brake operation is slid along the sliding tube on which the backrest frame is attached, so that the position of the operation lever can be adjusted up and down.

  Another feature of the present invention is that an angle adjusting unit that can adjust the angle of the operation lever for the reclining operation and the brake operation attached to the front ends of the left and right backrest frames up and down is installed. This is a reclining wheelchair. The angle of the operation lever for the reclining operation and the brake operation can be adjusted by fixing the screw of the angle adjustment unit at a predetermined value.

  Determine the bending angle between the upper and lower back frames of the reclining wheelchair's backrest, and attach fulcrum units with holes for inserting pins to maintain the determined bending angle on the left and right back frame By doing so, the bending angle of the backrest can be easily adjusted. By connecting and interlocking the left and right fulcrum units attached to the left and right back frame of the reclining wheelchair, the caregiver can adjust and fix the angle of the left and right back frame with one hand.

  Even if the backrest frame is lowered, each lever can be adjusted so that the position of the lever for reclining operation and brake operation attached to the tip of the left and right backrest frame of the reclining wheelchair can be adjusted up and down. Caregivers became easier to handle. Furthermore, the angle of the lever for the reclining operation and the brake operation can be adjusted up and down, so that the caregiver can easily handle the operation lever without bowing.

The side view of the wheelchair which made the back folding type reclining wheelchair of this invention the reclining state and stood the upper part of the back is shown. The side view which changed the height and angle of the operation lever of a handle | steering-wheel and a brake in the reclining state of the back folding type reclining wheelchair of this invention is shown. Each part which decomposed | disassembled the fulcrum unit is shown with a perspective view. Each part which decomposed | disassembled the lock pin unit attached to a fulcrum unit is shown with a perspective view. The part which assembled the fulcrum unit and attached to the backrest frame is shown with a side view. The part of the frame in which the lower part of the backrest frame on which the fulcrum unit is attached can be expanded and contracted is shown in a side view. The example which connected the fulcrum unit attached to the right-and-left backrest frame with the connection member is shown with a perspective view. FIG. 3 is an exploded perspective view of the handle operating lever. The state which attaches the operation lever of a handle | steering_wheel to the sliding tube of a backrest frame is shown with a perspective view. The state which attached the operating lever of the handle | steering_wheel to the sliding tube of the assembly backrest frame is shown with a perspective view. A side view is shown in which the operating lever of the handle is attached to the sliding tube of the back frame so that the height of the operating lever of the handle can be adjusted up and down. The side view which enabled change of the angle of the operating lever of the handle which attached the operating lever of the handle to the sliding pipe of the backrest frame is shown.

  Examples of the fulcrum unit for bending the backrest frame of the reclining wheelchair of the present invention up and down, the reclining operation lever, and the brake operating lever will be described below, but the present invention is not limited to the following embodiments.

  1A and 1B show side views of the reclining wheelchair 100 of the present invention in a reclining state.

  As shown in FIG. 1A, a seat 20 and a backrest 25 that can be reclined to the rear of the seat are provided on a side frame 14 of a reclining wheelchair having pivotable casters 18 on the front wheels and large wheels 22 on the rear wheels. The brake lever 28 for brake operation and the handle lever 27 which can perform a reclining operation are attached to the upper end of the frame 25 of the backrest. The handle lever 27 and the brake lever 28 are slidably mounted on a sliding tube 26 attached to the upper portion 25a of the backrest frame.

  The backrest frame of the backrest portion 25 is divided into an upper portion 25a and a lower portion 25b, and a fulcrum unit 29 is attached between the upper portion 25a and the lower portion 25b of the divided backrest portion. It can be bent between the upper part 25a and the lower part 25b from the middle. After the bending angle between the upper part 25a and the lower part 25b is determined, a fulcrum unit 29 with a hole for inserting a pin is provided between the upper part 25a and the lower part 25b of the left and right back frame to maintain the angle. It is a reclining wheelchair.

  FIG. 1B shows that a brake lever 28 for operating a brake slidably mounted on a sliding tube 26 at the upper end of the frame 25 of the backrest and a handle lever 27 for performing a reclining operation are attached to the angle adjusting unit. It is shown that the angle of the handle lever 27 and the brake lever 28 can be adjusted by the angle adjustment knob of the angle adjustment unit.

  FIG. 2A shows the back frame in which the handle lever 27 and the brake lever 28 for brake operation are installed at the upper end of the back frame 25 in a state bent from the upper portion 25a and the lower portion 25b of the back frame 25. It is possible to adjust up and down along the sliding tube 26 attached to 25. When the backrest frame 25 of the reclining wheelchair 100 is tilted and the handle lever 27 and the brake lever 28 for brake operation are lowered, the positions of the handle lever 27 and the brake lever 28 can be moved up and down to adjust the height.

  In FIG. 2B, the back frame 25 is divided into an upper part 25a and a lower part 25b, and the frame of the lower part 25b of the back frame 25 can be expanded and contracted by inserting the inner pipe 25c into the outer pipe 25b. The reclining wheelchair is shown in a stretched position. By inserting the inner tube 25c into the outer tube 25b of the lower frame 25b of the back frame and making it extendable, the length of the back frame 25 can be adjusted according to the height of the occupant and the state of the disease. In addition, the installation angle of the handle lever 27 and the brake lever 28 installed on the upper portion 25a of the backrest frame can be adjusted up and down. When the backrest frame 25 of the reclining wheelchair is tilted and the angle of the handle lever 27 and the brake lever 28 becomes difficult to grip, the angle of the handle lever 27 and the brake lever 28 can be adjusted to an angle that is easy to grip.

  FIG. 3 shows an exploded perspective view of the fulcrum unit 29 for connecting the upper part 25a of the divided back frame and the lower part 25b of the back frame and maintaining a constant angle. As shown in FIG. 3, the upper fulcrum unit body 101 is attached to the upper portion 25a of the backrest frame, and the lower fulcrum unit body 102 is attached to the lower 25b frame. The upper fulcrum unit main body 101 was crowned on the lower fulcrum unit main body 102, the fulcrum fastening bolt 103 was inserted, the washer 104 and the loose washer 105 were installed, and the fastening nut 106 was pivotally attached. The lock pin unit 109 was pivotally attached to a screw hole 110 formed in the lower part of the fulcrum unit main body 101. The pin of the lock pin unit 109 is inserted into the hole 113 formed in the lower fulcrum unit body 102 to fix the angle. Next, a cover 111 was attached to the fulcrum knit body and fixed with a cover bolt 112.

  FIG. 4A illustrates a method of attaching the lock pin unit 109 to the fulcrum unit 29 shown in FIG. The lower fulcrum unit main body 102 is attached to the lower part 25b of the backrest frame, the upper fulcrum unit main body 101 attached to the upper part 25a of the backrest frame is crowned, the fulcrum fastening bolt 103 is inserted, the washer 104, and the loose washer 105 was installed and pivotally attached to the fastening nut 106 so as to be rotatable. The lock pin unit 109 was screwed into a lock pin unit fixing hole 110 formed in the lower portion of the fulcrum unit main body 101. As shown in FIG. 4B, the lock pin unit 109 has a structure in which a pin 109e urging a spring member 109d is inserted into a main body 109c into a head 109a having a hole through which the connecting wire 31 of the connection member 30 is passed. It is fixed with a fixing pin 109b. The lock pin unit 109 is screwed into the lock pin unit fixing hole 110 below the fulcrum unit main body 101. The pin of the lock pin unit 109 is fitted into a lock pin insertion hole 113 formed in the lower fulcrum unit main body 102 to adjust the angle of the backrest frame 25.

  FIG. 5 shows the relationship between the state of the fulcrum unit 29 installed between the upper part 25a and the lower part 25b of the back frame and the pin engagement position of the lock pin unit 109 when the angles of the upper part 25a and the lower part 25b of the back frame are bent. Is shown. FIG. 5A shows a case where the angle of the upper part 25a and the lower part 25b of the backrest frame is bent at a right angle, the fulcrum unit main body 101 rotates laterally, and the lock pin unit 109 attached to the fulcrum unit main body 101 is The pin 107e of the lock pin unit 109 is fitted into the hole 113 in the upper end portion drilled in the lower fulcrum unit main body 102, and the angle of the backrest frame 25 is fixed. FIG. 5B shows the case where the angle of the upper part 25a and the lower part 25b of the backrest frame is vertical, the fulcrum unit main body 101 rotates, the lock pin unit 109 attached to the fulcrum unit main body 101 returns to the original state, The pin 109e of the lock pin unit 109 is fitted into a hole 113 at the lower end portion drilled in the lower fulcrum unit main body 102 to fix the angle of the backrest frame vertically.

  FIG. 6 shows a state in which a telescopic portion in which the fulcrum unit 29 attached between the upper portion 25a of the backrest frame and the lower portion 25b and the inner tube 25c of the lower portion 25b of the backrest frame are inserted into the outer tube 25b is extended. . As shown in FIG. 6A, the fulcrum unit 29 has the pin of the lock pin unit 109 inserted into the hole 113 of the malleable part under the fulcrum unit main body 102, and the backrest frame 25 is maintained vertically. FIG. 6B shows a mounting portion of the fulcrum unit 29 mounted on the back frame upper portion 25a and the lower portion 25b from directly behind the wheelchair. The fulcrum unit 29 is pivotally attached to the upper portion 25 a and the lower portion 25 b of the backrest frame 25 by a fulcrum fastening bolt 103 and a fastening nut 106. The lock pin unit 109 of the fulcrum unit 29 pivotally attached to the left and right backrest frames 25 is connected by the wire 31 of the connection member 30. The inner tube 25c of the lower part 25b of the backrest frame is intubated into the outer tube 25b, and can be adjusted in length by vertically expanding and contracting. The length is adjusted by loosening the screw 25e screwed into the long hole 25d formed in the outer tube 25c, sliding the inner tube 25c up and down, and adjusting the length of the lower portion 25b of the backrest frame. The screw 25e is tightened and fixed at an arbitrary position of 25d.

  FIG. 7 shows a state in which the lock pin units 109 of the left and right fulcrum units 29 are connected by the connecting wire 31 of the connecting member 30. The fulcrum unit 29 attached to the left and right backrest frames 25 is connected by a connecting wire 31 attached to the connection member 30 as shown in FIG. When the pins 109e of the lock pin unit 109 that has fixed 29 are pulled out at the same time on the left and right, and the hand is released at an arbitrary position, the angle of the left and right backrest frames 25 can be easily adjusted. There is no need to adjust the angle one by one as in the prior art, and the angle of the backrest frame 25 can be adjusted simultaneously on the left and right.

  FIG. 8 is an exploded perspective view of the handle lever 27. The fulcrum fastening nut 127 and the round nut 120 are inserted into the distal end portion of the grip pipe 124 of the handle lever 27, the round nut fixing plates 125 are mounted on both sides, and fixed with the round nut fixing plate mounting bolts 126, and the angle adjusting unit 114. Insert into. The tip of the grip pipe 124 is pivotally attached to the angle adjustment unit 114 from both sides by fulcrum bolts 123. At the rear of the angle adjustment unit 114, a collar 108 is attached from below, a round nut moving bolt 121 is inserted, the collar 108 is attached from above the angle adjustment unit 114, and an angle adjustment knob screw 117 is attached to adjust the angle. It is fixed with a knob screw fixing bolt 118.

  9 shows that the angle adjusting unit 114 assembled in FIG. 8 is loosened in the screw hole at the tip of the angle adjusting unit 114 by inserting a fixing nut 115 inside the sliding tube 26 attached to the backrest frame 25. A washer 105 was installed and fastened to the sliding tube 26 with a fixing bolt 116. When adjusting the height of the angle adjusting unit 114, the fixing bolt 116 is loosened and adjusted to an arbitrary position up and down, the fixing bolt 116 is tightened, and the angle adjusting unit 114 is fixed to the sliding tube 26.

  FIG. 10 is a perspective view of the state in which the angle adjustment unit 114 attached to the handle pipe 27 and the grip pipe 124 shown in FIG. 10A is slidably attached to the sliding tube 26 attached to the back frame 25. . FIG. 10B shows a top view of a state in which the angle adjusting unit 114 attached to the grip pipe 124 of the handle lever 27 is attached via the sliding tube 26 of the back frame 25.

  FIG. 11 shows that the handle lever 27 is moved to an arbitrary height by loosening the fixing nuts 115 and sliding the handle lever 27 up and down the sliding tube 26 and tightening the fixing bolts 116 and 116 at arbitrary positions. Can be adjusted to.

In FIG. 12, the angle adjustment knob screw 117 attached to the top of the angle adjustment unit 114 is loosened, and the angle of the handle lever 27 is set to an arbitrary angle using the fulcrum bolt 123 attached to the center of the angle adjustment unit 114 as a fulcrum. The angle of the handle lever 27 can be adjusted by adjusting the position.

100: Reclining wheelchair 11: Armrest 12: Side cover 13: Armrest support 14: Side frame 15: Front frame 16: Footrest frame 17: Footrest 18: Caster 19: Body frame 20: Seat 21: Lower frame 22: Large wheels 23: headrest 24: headrest support 25: backrest frame 26: sliding tube 27: handle lever 28: brake lever 29: fulcrum unit 30: connecting member 31: connecting wire 32: small wheel for preventing overturning

101: fulcrum unit main body 102: fulcrum unit main body lower 103: fulcrum fastening bolt 104: washer 105: locking washer 106: fastening nut 107: fulcrum fastening bolt hole 108: collar 109: lock pin unit 110: lock pin unit fixing hole 111: Cover 112: Cover fixing bolt 113: Lock pin insertion hole 114: Angle adjusting unit 115: Fixing nut 116: Fixing bolt 117: Angle adjusting knob screw 118: Angle adjusting knob screw fixing bolt 119: Long hole 120 for collar movement 120: Round nut 121: Round nut moving bolt 122: Long hole for round nut moving bolt 123: Support point bolt 124: Grip pipe 125: Round nut fixing plate 126: Round nut fixing plate mounting bolt 127: Support point fastening nut

Claims (3)

A seat and a reclining backrest at the rear of the seat are mounted in the center of the wheelchair with a pivotable caster on the front wheel and a large wheel on the rear wheel, and the brake is operated at the tip of the frame of the backrest. And a reclining wheelchair in which the back frame of the backrest portion on which the grip capable of performing the reclining operation is attached is capable of bending the upper stage and the lower stage ,
For dividing the backrest frame of the backrest in the upper part and a lower part, the bending angle of the upper portion and the lower portion is determined between the upper portion and the lower portion of the divided the backrest frame, maintaining a determined bending angle fulcrum unit hole is drilled to insert the pin is clamped by the seat back frame,
A sliding tube for adjusting the position of the operation lever and the handle lever for the reclining operation and the brake operation up and down along the upper portion of the back frame is attached to the upper portion of the back frame,
An angle adjusting unit for installing the operation lever and the handle so that the angle of the operation lever and the handle lever with respect to the upper part of the backrest frame can be adjusted up and down is slidably installed on the sliding tube. Reclining wheelchair.   The reclining wheelchair according to claim 1, wherein the fulcrum units attached to the left and right backrest frames are connected by a connecting wire of a connecting member, and the left and right fulcrum units are interlocked.   The reclining wheelchair according to claim 1 or 2, wherein the lower backrest frame of the backrest frame divided into upper and lower portions can be expanded and contracted by inserting the inner tube into the outer tube, and the length of the backrest frame can be adjusted.

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