JP2006255070A - Folding manual wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheelchair 1 which enables a user to take baggage in and out of a storage part 12 provided under a seating face 10 freely from the side of the wheelchair 1 and enables the user to get on and off the wheelchair 1 from the side. <P>SOLUTION: A pair of right and left armrests 14 and at least one driving wheels 30 of the foldable manual wheelchair 1 are rotated within a range of 90° from the side to the back. The armrests 14 and the driving wheels 30 are fixed at a fixed position on the side and/or in the back. The storage part 12 is provided under the seating face 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a foldable manual wheelchair, and more particularly to a foldable manual wheelchair in which a drive wheel and an armrest are pivotable rearward from the side.

FIG. 10 is a perspective view of a conventional folding manual wheelchair.
As shown in FIG. 10, the conventional foldable manual wheelchair 3 is roughly divided into a seating surface 10, a pair of left and right armrests 14, 14, a backrest 16, a pair of left and right casters 20, 20, and a pair of left and right drives. It consists of 30 and 30 wheels.

  The main frame 40 includes a front support frame 42, a rear support frame 44, and an upper side frame 48 and a lower side frame 50 that are horizontally mounted on the front support frame 42 and the rear support frame 44. The front support frame 42 supports the caster 20, the rear support frame 44 supports the driving wheel 30, and the upper side frame 48 supports the edge of the foldable seating surface 10. Further, a cross arm 54 is installed on the pair of left and right main frames 40, 40, and the foldable manual wheelchair 3 can be folded by the cross arm 54.

  The front support frame 42 and the rear support frame 44 extend upward from the upper side frame 48 and bend, and are connected to each other to form the armrest 14. Also, a back support frame 52 is fixed in the vicinity of the rear support frame 44 of the main frame 40, the back support frame 52 extends upward, and the tip thereof is bent rearward to form the grip 18, A foldable backrest 16 is installed on the pair of backrest support frames 56, 56.

  The driving wheel 30 will be described in more detail. A shaft supporting member 46 having a protruding portion that protrudes laterally outward at a substantially right angle is interposed in an intermediate portion of the rear support frame 44. The drive wheel 30 is pivotally supported so as to be rotatable.

  In order for the user to get on and off the foldable manual wheelchair 3, the brake 34 is pulled so that the foldable manual wheelchair 3 does not move, the movement of the drive wheel 30 is restricted, and the footrest 22 is rotated upward. Then, the user gets on the self-propelled manual wheelchair 3 so as to face back and sit on the seating surface 10. Further, when getting off, the brake 34 is pulled, the footrest 22 is rotated upward, the two feet are put on the ground, and the ride gets off.

  As described above, when the user gets on the foldable manual wheelchair 3, the user turns back toward the foldable manual wheelchair 3, and there are some users who feel uneasy about this backward orientation. Further, when the user gets off the vehicle, the user can rotate the footrest 22 upward with the toe of the foot, but there are some users who cannot turn the footrest 22 well with the toe of the foot. . In such a case, if it is possible to get on and off from the side of the wheelchair, the above problem can be solved.

  By the way, when the user of the wheelchair has baggage, the baggage is placed on the lap, placed in the car installed behind the backrest 16, or the baggage on the grip 18. It is the present condition that hangs. However, placing a piece of luggage on the knee may interfere with the operation of the hand rim 32 attached to the drive wheel 30, and may be put in the car behind the backrest 16 or the grip 18. When suspended, the center of gravity of the foldable manual wheelchair 3 moves to the rear side due to the weight of baggage or the like, and there is a possibility that the balance is lost and the wheelchair falls.

  Therefore, it is preferable to provide a storage part such as a basket under the seating surface 10 and to put baggage etc. in this storage part, because it does not get in the way and the center of gravity of the wheelchair is lowered and stabilized, In the foldable manual wheelchair 3, even if it is going to put baggage etc. into this accommodating part from the side, since it is blocked | closed with the spoke of the drive wheel 30, baggage etc. cannot be put from the side of a wheelchair. In addition, it may be difficult for some users to put baggage etc. into the storage part under the seat 10 from the front side (footrest 22 side) or back side (back side of the backrest 16) of the wheelchair because the body is bent. In addition, it is impossible to put baggage etc. in and out of the storage part while in a wheelchair.

By the way, Japanese Patent No. 3207907 discloses an invention of a wheelchair in which a disabled person can easily transfer between a bed and a wheelchair.
The configuration of the present invention is such that the seat surface having the backrest portion mounted on the vehicle body side of the wheelchair for the handicapped person is equal to or lower than the height of the drive wheel portion located in the side projection of the seat surface. As a mounting position where the driving wheel diameter is restricted or shifted backward, a free space that does not interfere with the driving wheel on the lateral outside of the seating surface is provided. A bridge seat for movement is provided on the bed side that also serves as a side frame that can be rotated around the longitudinal axis in the vicinity of the height of.

Japanese Patent Laying-Open No. 2000-342632 discloses an invention in which a storage portion is provided under a seating surface so that baggage can be taken in and out from the side of a wheelchair.
According to the present invention, “the driving wheel of a conventional wheelchair has a structure in which the tire is fixed to the hub by spokes. For example, even if a luggage bag is installed under the seat, the driving wheel is viewed from the side where the driving wheel is located. Therefore, the present invention aims to provide a wheelchair having improved lateral passage, and as a solution therefor, “the drive wheel is attached to the chair portion via the connecting portion. The driving wheel includes a tire and a rail portion attached to the inner periphery of the tire, and does not have a hub and a spoke. The connecting portion includes a support rod connected to the chair portion, and the support portion. And three pulleys supported by a rod and movably engaged with the rail portion ”.
Japanese Patent No. 3207907 JP 2000-342632 A

  However, the technology disclosed in Japanese Patent No. 3207907 is a wheelchair for the purpose of allowing a disabled person to easily transfer between a bed and a wheelchair. It is not supposed to be done.

  In addition, since the technology disclosed in Japanese Patent Laid-Open No. 2000-342632 eliminates the need for spokes on the driving wheel of the wheelchair, it is possible to take in and out baggage from the side of the wheelchair without inconvenience. On both sides, the user cannot get on and off from the side.

  Therefore, the present invention provides a wheelchair in which baggage and the like can be freely taken in and out from the side of the wheelchair and can be taken in and out from the side of the wheelchair. Objective.

In order to solve the above-described problem, a folding manual wheelchair according to claim 1 of the present application includes a pair of left and right main frames having a rear support frame that supports driving wheels and upper side frames that support both side edges of the seating surface. In a foldable manual wheelchair in which a cross arm is installed and the seating surface is foldably attached, a pivotal support member having a protruding portion protruding laterally outward at a substantially right angle at an intermediate portion or a lower end portion of the rear support frame The drive wheel is pivotally supported by the projecting portion of the pivot support member, and either or both of the pair of left and right pivot support members are attached to the rear support frame. On the other hand, it is pivotally supported in a horizontal direction within a range of approximately 90 ° from the side to the rear, and the upper end of the rear support frame is connected to the base end of the armrest located above and on both sides of the seating surface. It is, is characterized in that it is pivotally supported pivot in the range of approximately 90 ° backward from the side with respect to the rear support frame with the rotation of the shaft support member.
Moreover, the foldable manual wheelchair according to claim 2 of the present application is the foldable manual wheelchair according to claim 1, wherein the pivot support member and the armrest have a lateral fixed position and / or a lateral position during traveling. It is characterized by being fixed at a fixed position rotated backward by approximately 90 ° from the fixed position.
And the foldable manual wheelchair according to claim 3 of the present application is the foldable manual wheelchair according to claim 1 or 2, wherein the drive wheel is inclined at an upper portion thereof, and the drive wheel The ground contact point is pivotally supported so as to be positioned on an extension line of the axis of the rear column frame.
Furthermore, the foldable manual wheelchair according to claim 4 of the present application is the foldable manual wheelchair according to any one of claims 1 to 3, wherein a storage portion is formed under the seating surface. It is characterized by.

  In the foldable manual wheelchair according to the first aspect of the present invention, either one or both of the pair of left and right shaft support members are connected in a freely rotating manner within a range of approximately 90 ° from the side to the rear support frame. It is installed. For this reason, if the pivot support member is rotated backward, the drive wheel is also rotated backward, so that the space under the seating surface is opened to the side, and the space under the seating surface can be used from the side. It becomes possible.

  The base end of the armrest is connected to the upper end of the rear support frame, and the armrest rotates together with the rotation of the shaft support member. For this reason, since the driving wheel is also rotated by rotating the armrest, the user can rotate the driving wheel without bending his / her waist, and if the armrest is rotated backward, The side part of the wheelchair is opened, and it is possible to get on and off the wheelchair from the side.

  The foldable manual wheelchair according to claim 2 of the present application is such that the pivoting support member and the armrest are pivoted rearward at about 90 ° from a fixed position on the side and / or a fixed position on the side during travel. Fixed. For this reason, when traveling, the couple that rotates the hand rim attached to the driving wheel works effectively, and the wheelchair can be traveled without difficulty. Further, when getting on and off, since the driving wheel and the armrest are fixed behind the wheelchair, the driving wheel and the armrest do not become an obstacle to getting on and off.

  In the folding manual wheelchair according to claim 3 of the present application, the upper part of the drive wheel that is pivotally supported by the middle part or the lower end part of the rear support frame via the pivotal support member is inclined laterally outward. The grounding point is on an extension line of the axis of the rear support frame. For this reason, the grounding point of the driving wheel becomes the center of rotation in the range of about 90 ° from the side to the rear support frame, the friction with the road surface during the rotation is minimized, and the woman without arm strength Even a user can rotate the vehicle while riding without difficulty.

  In the foldable manual wheelchair according to claim 4 of the present application, a storage portion is formed in the lower portion of the seat surface. If baggage etc. are put into this storage part, the center of gravity of a wheelchair will fall by the weight of baggage etc., and it will become much more difficult for a wheelchair to fall down. In addition, when putting in and out baggage in the storage part, if the driving wheel and armrest are rotated and fixed behind the wheelchair, the side of the wheelchair will be opened and the baggage will remain in the storage part while sitting in the wheelchair. Etc. can be easily put in and out.

  An embodiment according to the best mode for carrying out the present invention will be described with reference to FIGS. 1 is an overall perspective view of a foldable manual wheelchair according to an embodiment, FIG. 2 is a side view of the foldable manual wheelchair according to the embodiment, and FIG. 3 is a front view of the foldable manual wheelchair according to the embodiment. 4 is a structural sectional view of the rear support frame of the folding manual wheelchair according to the embodiment, FIG. 5 is a diagram showing the inclination of the drive wheel with respect to the rear support frame of the folding manual wheelchair according to the embodiment, and FIG. The side enlarged view of the folding type manual wheelchair according to the example, FIGS. 7 to 9 are views in which the driving wheel and the armrest of the folding type manual wheelchair according to the example are rotated rearward from the side.

  First, the configuration of the folding manual wheelchair according to the embodiment will be described. 1 to 9, reference numeral 1 denotes a folding manual wheelchair according to the embodiment, reference numeral 10 denotes a seating surface, reference numeral 12 denotes a storage portion, reference numeral 14 denotes an armrest, reference numeral 16 denotes a backrest, reference numeral 20 denotes a caster, and reference numeral 22 denotes a footrest. Reference numeral 30 is a drive wheel, reference numeral 32 is a hand rim, reference numeral 40 is a main frame, reference numeral 42 is a front support frame, reference numeral 44 is a rear support frame, reference numeral 441 is a rear support frame outer pipe, reference numeral 442 is a rear support frame inner pipe. Reference numeral 46 is a shaft support member, reference numeral 48 is an upper side frame, reference numeral 481 is a first upper side frame, reference numeral 482 is a second upper side frame, reference numeral 50 is a lower side frame, reference numeral 52 is a seat support frame, Reference numeral 58 denotes a lock pin, and reference numeral 60 denotes a protruding piece. In addition, the same code | symbol is attached | subjected about the element same as the element in FIG. 9 which demonstrated the prior art example.

  The configuration of the foldable manual wheelchair 1 is substantially the same as the configuration of the conventional foldable manual wheelchair 3, and the configuration of the foldable manual wheelchair 3 has been described above. The structure of the type manual wheelchair 1 will be described.

  The main frame 40 includes a front support frame 42, a rear support frame 44, a first upper side frame 481 and a lower side frame 50. In the foldable manual wheelchair 1, the front support frame 42 and the first upper side frame 481 are bent and integrated, and the seat support frame 52 is attached to the substantially horizontal front support frame 42. Both side edges of the seat surface 10 are supported by the pair of left and right seat surface support frames 52, 52. The integrated front support frame 42 and the first upper side frame 481 have an L shape with curved corners, and the second upper side having the same shape as the L shape. A frame 482 is disposed outside the front support frame 42 and the first upper side frame 481. One end of the front support frame 42 and one end of the second upper side frame 482 are fixed to the lower side frame 50, and one end of the first upper side frame 481 and the other end of the second upper side frame 482 are the rear part. It is fixed to the support frame 44.

  The upper part of the rear support frame 44 is a straight pipe, and has a shape in which a bent pipe having a J shape upside down is connected to the lower end of the straight pipe. That is, the lower end frame 50 is fixed to the lower side frame 50 and extended upward, and then bent rearward, and the front end is fixed to the lower end of the straight pipe to constitute the rear support frame 44. The straight pipe portion of the rear support frame 44 is a double pipe composed of a rear support frame outer pipe 441 and a rear support frame inner pipe 442, and includes one end of the first upper side frame 481 and the second upper side. The other end of the frame 482 is fixed to the rear support frame outer tube 441. A shaft support member 46 is connected to the lower end of the rear support frame inner tube 442, and the base end of the armrest 14 is connected to the upper end of the rear support frame inner tube 442. That is, the shaft support member 46 and the armrest 14 are integrated via the rear support frame inner tube 442. Further, the rear support frame inner tube 442 is rotatably held with respect to the rear support frame outer tube 441.

  The shaft support member 46 connected to the lower end of the rear support frame inner tube 442 includes a vertical portion having the same diameter as the rear support frame outer tube 441 and a projecting portion projecting substantially perpendicularly to the vertical portion. The protrusion is directed to the outside in the lateral direction at a fixed position when the foldable manual wheelchair 1 is traveling, and pivotally supports the drive wheel 30.

  As shown in FIG. 3, the drive wheel 30 that is pivotally supported by the pivot support member 46 is attached at a fixed position when the foldable manual wheelchair 1 is traveling, with the upper portion of the drive wheel 30 inclined outward. The grounding point of the drive wheel 30 is located on the extension line of the axial center of the straight pipe portion at the upper part of the rear support frame 44. That is, as shown in FIG. 5, the drive wheel 30 is inclined at an angle θ with respect to the rear support frame 44, and the axis of the rear support frame 44 is the same as the axis in the side view of the drive wheel 30. It almost matches on the road surface.

  The armrest 14 has a P-shape when viewed from the side, and in a fixed position when the foldable manual wheelchair 1 is traveling, the bent portion of the P-shape is directed forward, and the base end portion thereof is as described above. In addition, although fixed to the rear support frame inner tube 442, the bent portion of the letter P is in a free state.

  The armrest 14 and the shaft support member 46 are integrated via a rear support frame inner tube 442. The rear support frame inner tube 442 is rotatably held with respect to the rear support frame outer tube 441, and further driven. Since the wheel 30 is pivotally supported by the shaft support member 46, the drive wheel 30 is also rotated by rotating the armrest 14.

  Here, a method of fixing the armrest 14 and the driving wheel 30 at a fixed position on the side and a position rotated backward from the fixed position by approximately 90 ° will be described.

  The second upper side frame 482 is a hollow tube, and a lock pin 58 is inserted into the hollow portion while being urged toward the rear support frame 44. The front end of the lock pin 58 penetrates the rear support frame outer tube 441 and contacts the rear support frame inner tube 442, and the rear side of the armrest 14 at the time of travel and the rear of the fixed position approximately 90 °. An insertion hole into which the lock pin 58 is inserted is drilled at the contact position in the rotated fixed position. A protruding piece 60 protruding upward is fixed to the other end of the lock pin 58, and the tip of the protruding piece 60 protrudes from a long hole drilled in the second upper side frame 482.

  That is, when the projection piece 60 of the lock pin 58 is pressed forward to move the lock pin 58 forward, the tip of the lock pin 58 is removed from the fitting insertion hole, the fixed state is released, and the armrest 14 is free to move freely. Rotate. Since the armrest 14 and the drive wheel 30 move together via the rear support frame inner tube 442 and the shaft support member 46, if the armrest 14 is fixed, the drive wheel 30 is also fixed at that position, and the armrest 14 can freely rotate. If it can move, the drive wheel 30 can also rotate freely.

  The configuration of the foldable manual wheelchair 1 described above has been described with respect to the case where the armrest 14 and the drive wheel 30 are rotatable from the side to the rear in a range of approximately 90 ° with respect to the rear support frame 44. Of course, it is possible to fix either one of the armrest 14 and the driving wheel 30 without being rotatable. In this case, the configuration of the rear support frame 44 does not need to be a double tube made up of the rear support frame outer tube 441 and the rear support frame inner tube 442, and only the rear support frame outer tube 441 is configured. Become.

  The storage portion 12 is made of a foldable or foldable material, like the seat surface 10, and has a casing shape surrounded by a four-side wall surface and a bottom surface. The storage portion 12 is fixed by winding the four corners around the first upper side frame 481 and the lower side frame 50, respectively.

  Moreover, the wall surface located in the side of the accommodating part 12 can be opened and closed freely, and can be opened and closed as needed, and a baggage etc. can be taken in and out from this wall surface.

Next, the operation of the folding manual wheelchair 1 will be described.
When the armrest 14 and the drive wheel 30 are fixed at a fixed position during travel, that is, when the armrest 14 and the drive wheel 30 are located on the sides, the foldable manual wheelchair 1 is a conventional one as described above. Since the foldable manual wheelchair 3 and the configuration thereof are substantially the same, the same operational effects as those of the conventional foldable manual wheelchair 3 are achieved.

  When the armrest 14 and the drive wheel 30 are rotated backward from a fixed position during traveling, first, the projection piece 60 of the lock pin 58 is pressed forward to move the lock pin 58 forward, and the armrest 14 is fixed. Is released. When the armrest 14 is rotated rearward from the side in the released state, the drive wheel 30 is also rotated integrally with the movement of the armrest 14 from the side. When the driving wheel 30 is rotated, the upper part of the driving wheel 30 is inclined outward so that the grounding point of the driving wheel 30 is positioned on the extension line of the axial center of the straight pipe portion at the upper part of the rear support frame 44. Therefore, the grounding point of the drive wheel 30 is the center of rotation, and the friction with the road surface during the rotation is minimized. Therefore, even a female user can rotate the drive wheel 30 while riding. be able to. When the armrest 14 and the drive wheel 30 are rotated, a stopper device (not shown) is operated so that the wheels of the drive wheel 30 do not rotate.

  When the armrest 14 and the drive wheel 30 are in a fixed position at the rear, if the pressing force of the lock pin 58 on the protruding piece 60 is released, the tip of the lock pin 58 biased toward the rear support frame 44 is The rear support frame inner tube 442 is fitted into a fitting insertion hole and fixed. In this state, the armrest 14 and the drive wheel 30 are not present on the side of the foldable manual wheelchair 1 and are in an open state.

  As described above, the armrest 14 and the driving wheel 30 can be rotated while the user is riding on the vehicle. Therefore, the user can take baggage into and out of the storage unit 12 by tilting the upper body while riding. . Moreover, since the side of the foldable manual wheelchair 1 is open, it is possible to get on and off from the side.

FIG. 1 is an overall perspective view of a folding manual wheelchair according to an embodiment. FIG. 2 is a side view of the folding manual wheelchair according to the embodiment. FIG. 3 is a plan view of the folding manual wheelchair according to the embodiment. FIG. 4 is a structural cross-sectional view of the rear support frame of the folding manual wheelchair according to the embodiment. FIG. 5 is a diagram illustrating the inclination of the drive wheel with respect to the rear support frame of the folding manual wheelchair according to the embodiment. FIG. 6 is an enlarged side view of the folding manual wheelchair according to the embodiment. FIG. 7 is a diagram in which the driving wheel of the folding manual wheelchair according to the embodiment is fixed at a fixed position on the side. FIG. 8 is a diagram in the middle of rotating the driving wheel of the folding manual wheelchair according to the embodiment from the side to the rear. FIG. 9 is a diagram in which the drive wheel of the folding manual wheelchair according to the embodiment is fixed at a fixed position in the rear. FIG. 10 is a perspective view of a conventional folding manual wheelchair.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding type manual wheelchair which concerns on 1 Example 10 Seat surface 12 Storage part 14 Armrest 20 Caster 22 Footrest 30 Drive wheel 40 Main frame 44 Rear part support frame 46 Shaft support member 48 Upper side frame

Claims (4)

A foldable manual wheelchair in which a cross arm is installed on a pair of left and right main frames having a rear support frame for supporting a drive wheel and upper side frames for supporting both side edges of the seat surface so that the seat surface can be bent. In
A shaft support member having a projecting portion projecting laterally outward at a substantially right angle is interposed or connected to an intermediate portion or a lower end portion of the rear support frame,
The drive wheel is pivotally supported by the projecting portion of the pivot support member,
Either or both of the left and right shaft support members are pivotally supported in a horizontal direction within a range of approximately 90 ° from the side to the rear with respect to the rear support frame, and the rear support frame The upper end of the arm is connected to the base end portion of the armrest located above and on both sides of the seating surface, and is approximately 90 ° rearward from the side with respect to the rear support frame as the shaft support member rotates. Folding manual wheelchair characterized by being pivotally supported by   2. The shaft support member and the armrest are fixed at a fixed position on the side and / or a fixed position rotated rearward at about 90 ° from the fixed position on the side during travel. Foldable manual wheelchair as described.   The drive wheel is pivotally supported so that an upper portion of the drive wheel is inclined outward and a grounding point of the drive wheel is located on an extension line of an axis of the rear column frame. The foldable manual wheelchair according to claim 2.   The folding manual wheelchair according to any one of claims 1 to 3, wherein a storage portion is formed under the seating surface.

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