Wheelchair movement support tool

Abstract

To provide a wheelchair movement support tool allowing a user to stably attach it to a wheelchair with different-diameter front pipes or leg pipes.SOLUTION: A wheelchair movement support tool comprises a pipe frame 2 and a mounting member 5. The pipe frame 2 is composed of a first pipe frame 2a, a second pipe frame 2b, and a clamping member 3, where the first pipe frame 2a and the second pipe frame 2b are fixed at one end by the clamping member 3. The other ends of the first pipe frame 2a and the second pipe frame 2b include a mounting member 5a and a mounting member 5b, respectively. The mounting member 5 clamps the leg pipe of the wheelchair with a gripping portion and a clamping portion, and fixes it using a position adjusting nut. An angle between the leg pipe and an axial direction of the pipe frame 2 is 75-85°. A joint frame constituting the first pipe frame 2a or the second pipe frame 2b and a grip-portion frame are respectively connected at a substantially right angle using a joint member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a mobility aid that can be stably attached to wheelchairs having front pipes or leg pipes of different diameters. [Background technology]

[0002] In the event of a large-scale emergency evacuation such as the Great East Japan Earthquake, or when moving on rough ground such as sand, snow, gravel, or muddy ground, or moving uphill, it is extremely difficult to push the grip at the rear of the wheelchair. In addition, not only during disasters but also in everyday life and travel, many users find it inconvenient to use wheelchairs in places with steps or uphill slopes. Wheelchair mobility aids are required to be easily and quickly attached to ordinary wheelchairs in the event of an emergency evacuation. Furthermore, under normal circumstances, wheelchair mobility aids are required to be able to be stored without taking up too much space.

[0003] Therefore, the inventor has already proposed a wheelchair mobility aid consisting of a pair of mounting members that are detachably attached by clamping them to either the left and right front pipes or the left and right leg pipes of a wheelchair, and a U-shaped pipe frame with a pair of mounting members provided at both ends (see Patent Document 1). In such a wheelchair mobility aid, the pipe frame is attached approximately at a right angle to the axial direction of the front pipes or leg pipes of the wheelchair.

[0004] The appropriate height of the handle when the wheelchair mobility aid is attached to a wheelchair varies depending on the height of the user, but the wheelchair mobility aid of Patent Document 1 does not have a mechanism for adjusting the attachment angle, so it is affected by the inclination of the front pipe and leg pipe of the wheelchair to which it is attached. However, in addition to general wheelchairs, there are many different types of wheelchairs, such as those for sports, and there are also wheelchairs that are made to order. Therefore, the shapes and widths of the front pipes and leg pipes vary widely depending on the wheelchair. Therefore, there is a demand for a wheelchair mobility aid that can be attached at an appropriate angle desired by the user to wheelchairs of various shapes. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication Pamphlet WO2013 / 171949 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the above circumstances, an object of the present invention is to provide a wheelchair mobility aid that can be stably attached to wheelchairs having front pipes or leg pipes with different diameters. [Means for solving the problem]

[0007] In order to solve the above problems, the wheelchair mobility aid of the present invention comprises a pair of mounting members that are attached detachably by clamping to either the left and right front pipes or the left and right leg pipes of a wheelchair, and a U-shaped pipe frame with the pair of mounting members provided at both ends, in which the mounting members have a clamping portion formed at the end of the pipe frame and bent toward the pipe, and a gripping portion attached in front of the clamping portion and bent toward the pipe, sandwiching the pipe, the gripping portion gripping the wheelchair pipes at two contact points, and the clamping portion pressing the wheelchair pipes at the two contact points. This allows the wheelchair mobility aid to be easily attached and detached to a wheelchair in a short time. Conventionally, wheelchairs are configured so that a caregiver can push the wheelchair from behind to assist the user in moving. However, when using a wheelchair for emergency evacuation in the event of a disaster, or when the wheelchair is moving on rough ground or uphill, it is often difficult to move the wheelchair by simply pushing it from behind with both hands. The wheelchair mobility aid of the present invention lifts up and tows a pipe frame equipped with attachment members at both ends that can be attached detachably by clamping it to either the front pipe or the leg pipe of the wheelchair, to tow the wheelchair like a rickshaw, and easily supports emergency evacuation in the event of a disaster, etc., and wheelchair travel on rough ground and uphill. It can also be easily used not only in the event of a disaster, but also in everyday life, travel, etc., where there are steps or uphill slopes. A U-shaped pipe frame is a pipe frame that consists of two parallel pipe frames and a pipe frame that connects them in a perpendicular direction, and has a U-shaped shape in plan view.

[0008] In the wheelchair mobility aid of the present invention, the mounting member is arranged so that the gripping portion and the clamping portion are not arranged at a right angle to the axial direction of the pipe frame but are arranged at an incline, and when the mounting member is attached to the pipe, the angle between the axial direction of the pipe and the axial direction of the pipe frame is preferably 75 to 85°, more preferably 80°. Note that the "angle" here means the "included angle", and refers to the angle θ2 shown in Figure 7 (2). By providing a predetermined inclination rather than an approximately right angle to the axial direction of the front pipe or leg pipe and the axial direction of the pipe frame, even if the front pipe or leg pipe of the wheelchair to which it is to be attached is inclined, the effect of the inclination of the front pipe or leg pipe can be mitigated, and the pipe frame can be attached in a state that is nearly horizontal, and the height of the handle can be freely adjusted to suit the user's height, body shape and preferences, etc. FIG. 12 shows an explanatory diagram of a wheelchair. Generally, a wheelchair is provided with a leg pipe 12 to support a foot plate 14 and a leg belt 26. Furthermore, the leg pipe 12 and the arm pipe 15 are supported by a front pipe 11. In this specification, a leg pipe that slopes downward toward the front of the wheelchair, such as the leg pipe 12 shown in FIG. 12, is called a "backward-inclined type," and a leg pipe that slopes downward toward the rear of the wheelchair is called a "forward-inclined type." In the following description, the leg pipe on the right side as viewed from a person seated in the wheelchair is also called the "right leg pipe," and the leg pipe on the left side is also called the "left leg pipe."

[0009] The pair of mounting members are arranged so that the angle between the axial direction of the front pipe or leg pipe and the axial direction of the pipe frame is 75 to 85°, so that when the wheelchair mobility support device of the present invention is turned upside down, the pair of mounting members are equivalent to being arranged so that the angle between the axial direction of the front pipe or leg pipe and the axial direction of the pipe frame is 95 to 105° (see FIG. 7(1)). In this way, the reversible configuration of the wheelchair mobility support device of the present invention allows it to be attached to a wide variety of wheelchairs according to the needs of the user.

[0010] In the wheelchair mobility aid of the present invention, when the gripping part grips the pipe of the wheelchair and the clamping part presses against the pipe of the wheelchair, it is preferable that the clamping part abuts against a position adjustment nut that screws into a thread provided around the periphery of the pipe frame, and the position adjustment nut is rotated around the axis of the pipe frame as the rotation axis, so that the clamping part moves along the axis of the pipe frame and presses against the pipe of the wheelchair. This improves the convenience of installation and removal.

[0011] The wheelchair mobility aid of the present invention may be such that the gripping portion or clamping portion is attached to the pipe frame using a toggle clamp. By using a toggle clamp for attachment, anyone can easily clamp or release the clamp with a single touch. When a toggle clamp is used for the gripping portion, for example, a hook-type toggle clamp is connected, and the clamping portion grips a portion of the pipe and the gripping portion presses against the portion of the pipe. When a toggle clamp is used for the clamping portion, for example, a side-pressing toggle clamp is connected, and the gripping portion grips a portion of the pipe and the clamping portion presses against the portion of the pipe. Effect of the Invention

[0012] According to the present invention, it has an effect of being able to stably attach to wheelchairs having front pipes or leg pipes with different diameters. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a plan view of a wheelchair mobility aid according to a first embodiment of the present invention; [Diagram 2] FIG. 1 is a diagram illustrating the configuration of a wheelchair mobility aid according to a first embodiment of the present invention; [Diagram 3] Pipe frame function diagram [Figure 4] Diagram of joint parts [Diagram 5] FIG. 1 is an explanatory diagram of a mounting member for a first support member [Figure 6] An explanatory diagram of a mounting member for a second support member [Figure 7] Image of mounting of mounting member in Example 1 [Figure 8] FIG. 1 is a plan view of a mounting member according to a first embodiment; [Figure 9] Image of clamping by the gripping part and clamping part of Example 1 [Figure 10] Image of wheelchair mobility aid in use according to embodiment 1 [Figure 11] FIG. 11 is a plan view of the mounting member according to the second embodiment; [Figure 12] Wheelchair illustration DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. Note that the scope of the present invention is not limited to the following examples and illustrated examples, and many modifications and variations are possible. EXAMPLES

[0015] Fig. 1 shows a plan view of a wheelchair mobility support device of Example 1. As shown in Fig. 1, the wheelchair mobility support device 1 of Example 1 is composed of a pipe frame 2 and an attachment member 5. Specifically, the pipe frame 2 is composed of a first pipe frame 2a, a second pipe frame 2b, and a clamping member 3, and the first pipe frame 2a and the second pipe frame 2b are fixed at one end by the clamping member 3. The attachment member 5 is composed of attachment members (5a, 5b). The first pipe frame 2a and the second pipe frame 2b are provided with attachment members (5a, 5b) at the other ends, respectively.

[0016] Fig. 2 shows an explanatory diagram of the configuration of the wheelchair mobility support device of Example 1. As shown in Fig. 2, the wheelchair mobility support device 1 can be disassembled into a first support member 1a and a second support member 1b by removing the clamping member 3 shown in Fig. 1. The clamping member 3 is disassembled into a clamping member main body 30 and fasteners (31a, 31b), and in Fig. 2, the fastener 31a is loosely fitted onto the outer surface of the grip frame 3a, and the fastener 31b is loosely fitted onto the outer surface of the grip frame 3b. The first pipe frame 2a is composed of a grip frame 3a, a connector frame 4a, and a joint member 9a. The mounting member 5a has a gripping portion 6a, a clamping portion 7a, and a position adjustment nut 8a. The connector frame 4a is configured such that an inner pipe frame 41a is inserted inside an outer pipe frame 42a, and the length can be freely adjusted before being fixed using a fastener 32a. One end of the inner pipe frame 41a and the grip frame 3a are connected at a substantially right angle using a joint member 9a. A fastener such as a screw (not shown) is used for the connection. A stopper ring 33a is provided near the other end of the grip frame 3a.

[0017] Similarly, the second pipe frame 2b is composed of a grip frame 3b, a connector frame 4b, and a joint member 9b. The mounting member 5b has a gripping portion 6b, a clamping portion 7b, and a position adjustment nut 8b. The connector frame 4b is configured such that the inner pipe frame 41b is inserted inside the outer pipe frame 42b, and the length can be freely adjusted before being fixed using a fastener 32b. One end of the inner pipe frame 41b and the grip frame 3b are connected at a substantially right angle using a joint member 9b. A fastener such as a screw (not shown) is used for the connection. A stopper ring 33b is provided near the other end of the grip frame 3b. As such, the first support member 1a and the second support member 1b have the same structure except that they are linearly symmetrical vertically, and the following explanation of the first support member 1a also applies to the second support member 1b unless otherwise specified.

[0018] FIG. 3 is a functional explanatory diagram of the pipe frame, (1) showing a case where the interval between the left and right pipe frames is small, and (2) showing a case where the interval between the left and right pipe frames is large. As shown in FIG. 3(1), when the width W1 between the left and right leg pipes 12 of the wheelchair to which the pipe frame is to be attached is small, the left and right pipe frames can be fixed in a state where the width W1 is small, and as shown in FIG. 3(2), when the width W2 between the left and right leg pipes 12 is large, the left and right pipe frames can be fixed in a state where the width W2 is large. In this embodiment, the minimum width W1 of the left and right pipe frames is 300 mm, and the maximum width W2 is 480 mm. Therefore, the pipe frame can be attached to wheelchairs to which the width between the left and right leg pipes 12 is 300 to 480 mm, and can be used for a wide range of wheelchairs. In this embodiment, the width of the left and right pipe frames is set to 300 to 480 mm in consideration of portability when disassembled. For example, in the case of a child's wheelchair, the width may be adjustable to less than 300 mm, and conversely, in the case of a large wheelchair, the width may be adjustable to a size exceeding 480 mm.

[0019] Here, a fixing structure using the joint members (9a, 9b) will be described. Figure 4 is an explanatory diagram of the joint members, (1) showing the pipe frame of the first embodiment, and (2) showing the pipe frame of the comparative example. In the pipe frame 200 of the comparative example shown in FIG. 4(2), one pipe is bent at a substantially right angle to form the first pipe frame 200a and the second pipe frame 200b, so that the bent portion needs to be curved to some degree to ensure strength. In contrast, in the pipe frame 2 of the embodiment 1 shown in FIG. 4(1), the inner pipe frame 41a and the grip frame 3a are connected at a substantially right angle using a joint member 9a. Similarly, the inner pipe frame 41b and the grip frame 3b are connected at a substantially right angle using a joint member 9b. Therefore, it is possible to provide a longer linear portion of the grip frame (3a, 3b) than the pipe frame 200 of the comparative example while ensuring strength. As a result, as shown in FIGS. 4(1) and (2), when the width W3 when the gap between the first pipe frame 200a and the second pipe frame 200b is made the smallest is compared with the width W1 when the gap between the first pipe frame 2a and the second pipe frame 2b is made the smallest, it is found that the pipe frame 2 of the embodiment 1 can be made narrower. Therefore, the configuration of Example 1 makes it possible to attach the device to wheelchairs of a wide range of sizes.

[0020] Next, the structure of the wheelchair and the structure and function of the mounting members will be explained. Figure 12 is an explanatory diagram of the wheelchair, and is used to confirm the positions of the front pipe 11 and leg pipe 12 in the overall wheelchair. As shown in Figure 12, wheelchairs are generally provided with leg pipes 12 to support foot plates 14 and leg belts 26. Furthermore, the leg pipes 12 and arm pipes 15 are supported by the front pipe 11. The mounting members (5a, 5b) are attached and fixed to the left and right front pipes 11 or leg pipes 12 provided on the wheelchair. In this embodiment, an example in which the mounting members are attached and fixed to a backward-inclined leg pipe 12 will be described.

[0021] FIG. 5 is an explanatory diagram of the attachment member of the first support member, (1) showing the state when not clamped, and (2) showing the state when clamped. As shown in FIG. 5(1), an attachment member 5a is provided at the end of the connecting frame 4a of the first support member 1a. As shown in FIG. 5(2), the attachment member 5a is structured to clamp the leg pipe 12 on the right side of the wheelchair with the gripping part 6a and the clamping part 7a, and to fix it using a position adjustment nut 8a. The leg pipe 12 is of a backward-inclined type, but the gripping part 6a and the clamping part 7a are not provided perpendicular to the longitudinal direction of the first support member 1a but are provided at an incline, so that the first support member 1a can be attached so that the front of the first support member 1a does not rise too far upward even when clamped.

[0022] FIG. 6 is an explanatory diagram of the attachment member of the second support member, (1) showing the case where it is attached to a backward-inclined leg pipe, and (2) showing the case where it is attached to a forward-inclined leg pipe. As shown in FIG. 6(1), an attachment member 5b is provided at the end of a connecting frame 4b in the second support member 1b, and the attachment member 5b is structured to clamp the left leg pipe 12 of the wheelchair with a gripping portion 6b and a clamping portion 7b, and to be fixed using a position adjustment nut 8b. As with the first support member 1a, the gripping portion 6b and the clamping portion 7b are not provided perpendicular to the longitudinal direction of the second support member 1b but are provided at an incline, so that the second support member 1b can be attached so that the front of the second support member 1b does not rise too far upward even when clamped.

[0023] Here, the function of providing the mounting member with an inclination will be described. Depending on the height, build, and preferences of the user, there are cases where the user desires the grip frame (3a, 3b) to be higher or lower when mounted on the wheelchair. Here, it is assumed that the user desires the grip frame (3a, 3b) to be more horizontal when mounted on the wheelchair mobility aid. 7 is an image of the attachment of the attachment member of the embodiment 1, (1) shows an image of the attachment to the right leg pipe of the backward inclination type, and (2) shows an image of the attachment to the right leg pipe of the forward inclination type. Note that the shapes of the pipe frame and the attachment member are exaggerated for the convenience of explanation. In the comparative example, the wheelchair mobility support device is attached approximately perpendicular to the axial direction of the leg pipes (12, 12a). Therefore, as shown by the dashed line in Figure 7 (1), when the support device is attached to the backward-inclined leg pipe 12, the front of the pipe frame will rise too far upward regardless of whether the first pipe frame 200a or the second pipe frame 200b is attached. Furthermore, as shown by the dashed line in Figure 7 (2), when a support device is attached to the forward-leaning leg pipe 12a, the front of the pipe frame will drop too far downward regardless of whether the first pipe frame 200a or the second pipe frame 200b is attached.

[0024] In contrast, in the wheelchair mobility support device 1 of Example 1, as shown in Figure 7 (1), for the backward-leaning leg pipe 12, the first support member 1a is attached to the right leg pipe and the second support member 1b is attached to the left leg pipe (not shown), thereby keeping the pipe frame 2 approximately horizontal. Furthermore, as shown in FIG. 7(2), for a forward-leaning leg pipe 12a, the wheelchair mobility support device 1 can be turned upside down and the second support member 1b can be attached to the right leg pipe and the first support member 1a can be attached to the left leg pipe (not shown), thereby keeping the pipe frame 2 approximately horizontal.

[0025] Specifically, Fig. 6(2) shows the second support member 1b turned upside down and attached to the forward-leaning leg pipe 12a. In this case, the second support member 1b is attached to the right leg pipe 12a of the wheelchair, and the first support member 1a is attached to the left leg pipe 12a of the wheelchair, although not shown.

[0026] As mentioned above, the example described here is one in which the user desires the grip frame (3a, 3b) to be approximately horizontal. However, if, for example, the user desires the height of the grip frame (3a, 3b) to be higher, even when it is attached to a backward-leaning leg pipe 12, it is possible to make the height of the grip frame (3a, 3b) higher by flipping the wheelchair mobility support device 1 upside down and attaching the second support member 1b to the right leg pipe and the first support member 1a to the left leg pipe. Furthermore, if it is desired to make the height of the gripping frames (3a, 3b) lower, even when they are attached to a forward-leaning leg pipe 12a, it is possible to make the height of the gripping frames (3a, 3b) lower by attaching the first support member 1a to the right leg pipe and the second support member 1b to the left leg pipe.

[0027] The angle θ1 between the axial direction of the first pipe frame 2a shown in Figure 7 (1) and the axial direction of the leg pipe 12 is 100°, and the angle θ2 between the axial direction of the second pipe frame 2b shown in Figure 7 (2) and the axial direction of the leg pipe 12a is 80°. In this way, by using the wheelchair mobility support device 1 of the first embodiment, it can be flexibly attached in response to the shape of the leg pipe of the wheelchair to which it is attached and the needs of the user.

[0028] FIG. 8 is a plan view of the mounting member of the first embodiment, where (1) shows the non-clamped state and (2) shows the clamped state. As shown in FIG. 8(1), in the first support member 1a, the mounting member 5a is configured to clamp the leg pipe (not shown) using the gripping portion 6a, the clamping portion 7a, and the position adjustment nut 8a, so that the leg pipe can be clamped. The position adjustment nut 8a is screwed into a thread 80 provided around the periphery of the pipe frame of the connecting frame 4a, and is slid along the longitudinal direction of the pipe frame by rotating the position adjustment nut 8a around the axis of the pipe frame as the rotation axis. Since the position adjustment nut 8a is in contact with the clamping portion 7a, the clamping portion 7a also moves with the movement of the position adjustment nut 8a. The second support member 1b has the same structure.

[0029] 9 is an image diagram of clamping by the gripping portion and the clamping portion of the first embodiment, where (1) shows the mounting member of the first embodiment and (2) shows the mounting member of the comparative example. In the mounting member 50 of the comparative example shown in FIG. 9(2), the gripping portion 60 is curved along a substantially semicircular arc and fits with a part of the leg pipe 12 to grip the leg pipe 12. The clamping portion 70 presses against a part of the leg pipe 12, and thus the gripping portion 60 and the clamping portion 70 clamp the leg pipe 12. However, since the diameter of the leg pipe 12 differs depending on the specifications of the wheelchair, if it is not the same as the inner diameter of the gripping portion 60, it will be clamped at two contact points (P5, P6) as shown in FIG. 9(2), for example. In contrast, in the mounting member 5a of Example 1, the gripping portion 6a and the clamping portion 7a are both formed to be bent inward as shown in Fig. 9(1), so that the difference in diameter of the leg pipe 12 can be absorbed to some extent, and the leg pipe 12 can be clamped at four contact points (P1 to P4), enabling stable fixation. In this embodiment, the mounting member 5a can be attached to a pipe with a diameter of 15 mm to 32 mm, but it may be configured so that the mounting member 5a can be attached to a pipe with a diameter of less than 15 mm, or may be configured so that the mounting member 5a can be attached to a pipe with a diameter of more than 32 mm.

[0030] FIG. 10 is an image diagram of how the wheelchair mobility support device of the first embodiment is used, where (1) is an external side view of a wheelchair to which the wheelchair mobility support device of the first embodiment is attached, and (2) is an explanatory diagram of how it is used by a user. As shown in FIG. 10(1), when the wheelchair mobility support device 100 of the comparative example is attached to a leg pipe 12, the front of the support device rises too far upward. However, since the wheelchair mobility support device 1 has an inclination at the clamping portion of the mounting members (5a, 5b), it can be attached approximately horizontally to the leg pipe 12 of the wheelchair. 10(2), a person 27 pulling a wheelchair can enter a space surrounded by the pipe frame 2 and easily lift the front wheel 21 by lifting the pipe frame of the grip frame (3a, 3b) or the clamping member 3, thereby supporting the wheelchair's travel on rough ground such as dirt, snowy roads, gravel roads, and muddy areas, as well as uphill. In addition, this system allows safe, fast, and comfortable travel not only in emergency wheelchair evacuation in the event of a disaster, but also in daily life and travel. In FIG. 10, the gripping portion 6 and the clamping portion 7 are configured to clamp the leg pipe 12, but for example the wheelchair mobility aid 1 may be attached to the front pipe 11 by being turned upside down. EXAMPLES

[0031] Fig. 11 is a plan view of the attachment member of the second embodiment, where (1) shows the clamped state and (2) shows the non-clamped state. As shown in Fig. 11(1), in the first support member 101 of the second embodiment, an attachment member 51 is provided on a connector frame 402. Note that Fig. 11 does not show the leg pipe or front pipe to which the attachment is to be made. Note that the second support member has a similar structure, being vertically symmetrical. The mounting member 51 includes a clamping portion 71 formed by bending inward at an end of the connector frame 402, and a gripping portion 61 attached to the end of the connector frame 402 by bending inward in front of the clamping portion 71. Specifically, an L-shaped metal fitting 81d is fixed to the side surface of the connector frame 402 using a fastener (not shown), and a lever 81a is attached to the L-shaped metal fitting 81d so as to be rotatable about an axis portion 81c. A gripping portion 61 is attached to the lever 81a so as to be rotatable about an axis portion 81b.

[0032] To release the clamped state shown in FIG. 11(1), the lever 81a is moved in the direction of the arrow to reach the state shown in FIG. 11(2), thereby releasing the clamped state. In addition, when clamping a leg pipe or the like, the leg pipe or the like is placed between the clamping portion 71 and the gripping portion 61, and then the lever 81a is moved in the direction of the arrow from the state shown in Figure 11 (2) to the state shown in Figure 11 (1), thereby clamping the leg pipe or the like. In this way, the mounting member 51 has a structure similar to that of a known hook-type toggle clamp, and the lever 81a can be operated by utilizing the principle of leverage, so that anyone can easily operate it with a single touch, whether clamping or releasing. [Industrial Applicability]

[0033] The present invention is useful as a mobility aid that can be attached to a wide variety of wheelchairs. [Explanation of symbols]

[0034] 1. Wheelchair mobility aids 1a,101 First support member 1b Second support member 2,200 Pipe frame 2a,200a 1st pipe frame 2b,200b Second pipe frame 3 Clamping member 3a, 3b Grip frame 4a, 4b, 402 Connector frame 5, 5a, 5b, 50, 51 Mounting parts 6a,6b,60,61 Gripping part 7a,7b,71 Clamping part 8a, 8b Position adjustment nut 9a, 9b Joint members 11 Front pipe 12,12a Leg pipe 13 Seat 14 Footplate 15 Arm pipe 16 Cross Pipe 17 Elbow pads 18 Back Band 19 Backrest pipe 20 Rear wheel (tire) 21 Front wheels (casters) 22 Hand rim 23 Brake lever 24 Brake shoes 25 Shaft plate 26 Leg Belt 27 Wheelchair towing person 30 Clamping member body 31a,31b,32a,32b Fasteners 33a, 33b Stopper ring 41a, 41b Inner pipe frame 42a, 42b Outer pipe frame 80 threads 81a Lever 81b,81c Shaft part 81d L-shaped bracket P1~P6 contact points W1~W3 width θ1, θ2 angle

Claims

1. A wheelchair mobility aid comprising a pair of mounting members that are detachably attached by clamping them to either the left and right front pipes or the left and right leg pipes of a wheelchair, and a U-shaped pipe frame having the pair of mounting members at both ends, The mounting member is A clamping portion is formed at an end of a pipe frame by bending toward the pipe, and a gripping portion is attached to the front of the clamping portion by bending toward the pipe, sandwiching the pipe, The gripping portion grips the pipe of the wheelchair at two contact points, The clamping portion presses against the pipe of the wheelchair at two contact points. A wheelchair mobility aid characterized by:

2. The mounting member is arranged such that the gripping portion and the clamping portion are not provided perpendicularly to the axial direction of the pipe frame but are provided at an incline, 2. The wheelchair mobility aid according to claim 1, characterized in that when attached to the pipe by the mounting member, the angle between the axial direction of the pipe and the axial direction of the pipe frame is 75 to 85 degrees.

3. When the gripping portion grips the pipe of the wheelchair and the clamping portion presses the pipe of the wheelchair, The wheelchair mobility aid described in claim 1, characterized in that the clamping portion abuts against a position adjustment nut that screws into a screw thread provided around the pipe frame, and by rotating the position adjustment nut around the axis of the pipe frame as a rotation axis, the clamping portion moves along the axis of the pipe frame and presses against the pipe of the wheelchair.

4. 4. A wheelchair mobility aid according to claim 1, wherein the gripping portion or the clamping portion is attached to the pipe frame by means of a toggle clamp.

Images