JPH0336336Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of a footrest for a wheelchair, and particularly to a structure in which the footrest is rotatably mounted.

[Conventional technology]

FIG. 2 is a perspective view for explaining the footrest step of a conventional wheelchair. In this wheelchair 1,
A seat sheet 3 and a backrest sheet 4 are spanned over a frame main body 2 formed by connecting a left side frame 2a and a right side frame 2b to form a part where a person sits. Step support frames 5 and 6, which are integrally formed, are suspended forward and downward from the front portions of the left frame 2a and the right frame 2b. And the step support frame 5,
6, there are foot rest steps 7a and 7, respectively.
b is attached so that its inner end can rotate around the outer connecting base. Also, foot rest step 7
Above the step support frames 5 and 7b,
A calf support section 8 is provided between the sections 6 and 6.
The calf support part 8 is provided to allow the disabled person to lean his/her calves against it when the foot is placed on the steps 7a, 7b.

[The problem that the idea aims to solve]

When using the wheelchair 1 shown in Fig. 2, if you try to sit down from the side of the wheelchair 1, the step support frames 5 and 6 protrude forward and downward, so the front side of the wheelchair 1 will move significantly as shown by arrow A. It was difficult to be seated until we had moved. Similarly, when getting off the wheelchair 1, the user had to move significantly forward to avoid the step support frames 5 and 6.

The above-mentioned lifting and lowering movements are extremely difficult for disabled people who require wheelchairs. In addition, there were cases where the foot got caught on the step support frames 5 and 6, resulting in injury.

Therefore, an object of the present invention is to provide a wheelchair step structure that allows a disabled person to ascend and descend easily and safely.

[Means to solve the problem]

The rotating structure of the footrest step for a wheelchair according to the present invention is a structure for rotating the footrest disposed at the front part of the wheelchair, and has a first state in which the tip thereof is protruded in front of the frame body of the wheelchair; A step support member rotatably connected to the frame body via the outside of the frame body so that the step support member can assume a second state in which the step support member is positioned rearward of the front end of the frame body; A connecting plate provided on the step support member for connecting to the main body, and a mounting plate provided on the frame main body so that the connecting plate slides on the upper surface when the connecting plate is connected. An inclined surface is formed on the upper surface of the mounting plate for freely rotating the step support member from a first state to a second state, and the mounting plate is connected to the distal end side of the step support member. The step is characterized by further comprising: a footrest step having a fixed footrest; and a locking means capable of restricting rotation of the step support member relative to the frame body in order to maintain the step support member in the first state when necessary. It is something.

[Effect of invention]

The step support member is rotatable from the first state to the second state via the outside of the frame body, so when moving up and down, the step support member is rotated from the first state to the second state, that is, to the rear of the frame body. By locating it on the side, it is possible to ascend and descend in the shortest distance without being obstructed by the step support member.

Furthermore, in the connection structure between the step support member and the frame body, the frame body is provided with the above-mentioned attachment plate, the step support member is provided with the connection plate that slides on the attachment plate, and the attachment plate is provided with the above-mentioned attachment plate. Since the step support member is provided with a sloped surface, the step support member is
It is possible to automatically rotate from the first state to the second state. Therefore, the step support member can be moved from the first state to the second state very easily without touching the step support member.

[Explanation of Examples]

FIG. 1 is a perspective view showing a wheelchair to which an embodiment of the present invention is applied. The wheelchair 11 has a frame body 12 configured by connecting a left side frame 12a and a right side frame 12b made of metal such as stainless steel, iron, or aluminum, or other rigid material. A seat sheet 13 extending in the horizontal direction is spanned between the left side frame 12a and the right side frame 12b to form a seating section, and a backrest sheet 14 is similarly spanned over the rear section.

Furthermore, handcarts 15 are arranged on the outside between the left frame 12a and the right frame 12b, respectively. The handcart 15 is attached to rotate together with drive wheels 16a and 16b arranged inside the handcart 15, and is provided to move the wheelchair 11 by rotating the handcart 15 by hand. It is something.

In addition, in FIG. 1, 17 indicates a brake device, and as shown in FIG. 5, a brake lever 18a
This is provided to prevent the wheelchair 11 from running away by pressing the brake shoe 18b against the drive wheel 16a by operating the brake shoe 18b.

Returning to FIG. 1, front wheels 19a and 19b as auxiliary wheels are rotatably attached to the lower front ends of the left frame 12a and the right frame 12b.

A step rotation structure, which is a feature of this embodiment, is provided at the front end portions of the left frame 12a and the right frame 12b. That is,
The left and right frames 12a, 12b and a step support member 21a made of a separate metal pipe, etc.
21b are rotatably connected to frames 12a and 12b, respectively. Footrest steps 22a and 22b are connected to the distal ends of the step support members 21a and 21b, respectively. It should be noted that the term "tip side" is not necessarily limited to the tip.

Since the left and right step support members 21a, 21b and the footrest steps 22a, 22b have the same structure, only the structure on the left side will be representatively explained in the following description.

The feature of this embodiment is that the above-mentioned step support member 21a passes through the outside of the frame body 12 as shown in the direction of arrow B in FIG. , frame body 1
2 (second state). The details of the structure that enables such rotation will be clarified below.

FIG. 3 is a perspective view showing an enlarged main part of the above embodiment. The front lower end portion of the left frame 12a on the side of the frame body 12 is erected as shown. As is clear from FIG. 4, mounting plates 23 and 24 are fixed to the left frame 12a at a predetermined distance apart in the height direction. The mounting plates 23 and 24 may be integrally formed on the left frame 12a, or separate mounting plates may be prepared and attached to the left frame 12a.
It may be joined to a. Pins 25 and 26 are erected on the upper surface of each mounting plate 23 and 24, respectively.

On the other hand, as is clear from FIG. 4, there are through holes 27 and 2 on the step support member 21a side, respectively.
Connecting plates 29, 30 with 8 are provided. The through holes 27 and 28 are formed in a size that allows the pins 25 and 26 described above to be inserted therethrough, respectively. This is to connect the step support member 21a with the pins 25 and 26 inserted into the through holes 27 and 28 while the step support member 21a is brought close to the left frame 12a in the direction of the arrow in FIG. be.

On the other hand, since mounting plates 23 and 24 having a certain area are provided on the frame 12a side, the step support member 21a is attached to the pins 25 and 24.
6 as a center, it is configured to be rotatable along the direction of arrow B in FIG. 1, that is, in the horizontal direction.

By the way, in this embodiment, the mounting plate 2
3 and 24 are sloped so that the step support member 21a rotates in the direction of arrow B in FIG. 1 in a free state. In other words, each mounting plate 23, 24 is sloped so that its outer rear portion is lower than its front inner portion, so that when the locking means described later is released, the mounting plates 23 and 24 can be mounted without touching them. In both cases, the step support member 21a and, in turn, the footrest step 22a are configured to be rotated to a rearward position (second state).

Next, a description will be given of the locking means for holding the step support member 21a in the state shown in FIG. 3, that is, in the first state. Referring to FIG. 4, a locking blade 32 is connected to the inside of the tip of the connecting plate 30 using a bolt 31. As shown in FIG. This locking blade 32
is normally biased in the direction C in FIG. 4 by a spring (not shown) attached around the bolt 31.

Furthermore, a locking portion that is locked to a locking wall 33 inside the mounting plate 24 is provided on the inside of the locking blade 32 . That is, in the state shown in Figure 3,
Due to the biasing force of the spring extrapolated to the bolt 31,
The locking portion of the locking blade 32, which is biased in the direction of arrow C in FIG. 4, is locked to the locking wall 33 of the mounting plate 24. Therefore, even if it is attempted to rotate the step support member 21a in the direction of arrow B from the state shown in FIG. 3, the locking spring 32 and the locking wall 33 restrict the rotation.

Returning to FIG. 1, reference numerals 38a and 38b indicate heel support members provided to support the heels of the feet placed on the footrests 22a and 22b. However, as in the conventional example, knee support members for supporting the knees may be attached to the steps 21a and 21b.

Next, the operation process of the above embodiment will be explained. When a disabled person tries to get on the wheelchair 11 shown in FIG. 1, when the step 21a is in the first state as shown in FIG. As in the example above, you must take a detour from the front. Therefore, in this wheelchair 11, before the disabled person gets on it,
The step support member 21a is rotated to the second state in advance. This rotation is performed when the locking blade 3 is in the state shown in FIG.
Step 2 is performed by opening in the direction of arrow D against the biasing force of the spring described above. When the locking blade 32 is opened in the direction of arrow D, the locking portion of the locking blade 32 and the locking wall 33 (FIG. 4) of the mounting plate 24 are released. As a result, mounting plates 24 and 2
3, the step support member 21a automatically rotates in the direction of arrow B in FIGS. 1 and 3 and assumes the second state shown in FIG. Become.

Therefore, a handicapped person can enter the wheelchair 11 directly from the left side of the front end portion of the left frame 12a without making a large detour to the front side of the wheelchair 11.

On the other hand, in order to return the footrest step 22a to the front while the person is seated, the step support member 21a is rotated in the direction of arrow E from the state shown in FIG. 5, and the locking blade 32 shown in FIG. 4 is opened. What is necessary is just to make it lock to the locking wall 33 of the attachment plate 24 using the urging|biasing force of a spring. Thereby, the state shown in FIG. 3 can be easily restored.

Similarly, when a disabled person gets off the wheelchair 11, he or she can get off easily and safely by operating the step support member 21a in the same manner as described above to change from the first state to the second state. There is.

The above structure and method of use are explained below for the left step support member 21a and the foot rest step 22a.
Although only the side has been described, the same applies to the right side step support member 21b and footrest step 22b. Therefore, the wheelchair 11 of this embodiment
The vehicle is constructed so that it can be easily and safely entered and exited from either the left or right side.

As an additional feature, the step support member 21a has an upper cylinder member 34 with a relatively large diameter and a lower cylinder member 35 having an outer diameter that can be inserted into the upper cylinder member 34, and both of them are connected to a connecting tool. 36. This connector 36 is configured so that the depth of engagement between the two can be adjusted by loosening the bolt 37. Therefore, it is possible to adjust the length of the step support member 21a by adjusting the depth of fitting according to the length of the handicapped person's legs. Note that the structure for varying the length of the step support member 21a is not limited to the one described above, and any structure conventionally used in wheelchairs may be adopted.

Further, in the above embodiment, the step support member 21
The locking means for holding a in the first state was provided on the side of the mounting plate 24 and the connecting plate 30 located relatively below, but on the contrary, the locking means was provided on the side of the mounting plate 24 and the connecting plate 30 located on the upper side. A locking means may be provided on the connection plate 29 side. Further, similar locking means may be provided on both sides. However, in that case, the operation may become troublesome.

Furthermore, the structure of the locking means is not limited to the one using the spring and the locking blade 32 and the locking wall 33 described above, but any locking structure that fits together to restrict rotational movement may be adopted. It is possible to do so.

Further, in the above embodiment, the step support member 21
The rotation of the step support member 21a is stopped when it comes into contact with the outer wall of the handcart 15 in the second state where it is rotated rearward. A stopper for stopping at any position may be provided on the frame 12a side.

Further, in the above embodiment, the step support member 21
a was detachably attached using pins 25, 26 and through holes 27, 28. However, instead of the pins 25 and 26, for example, rivets or the like may be used to connect the step support member 21a to the frame 12a in a rotatable but not detachable manner.

However, if the step is configured to be detachable as in the above embodiment, it is possible to attach not only the illustrated step support member 21a and footrest step 22a but also any shape of the step support member and footrest step instead. can. For example, in the case of a handicapped person who cannot bend one leg, a step support member much longer than the illustrated example can be prepared and attached in place of the step support member 21a. Therefore, by having a removable structure, it is possible to configure a wheelchair that is most suitable for various disabled people.

[Effect of idea]

As described above, according to the present invention, the step supporting member to which the footrest step is connected to the distal end side is moved from the first state in which the step supporting member, to which the footrest step is connected to the distal end side, protrudes forward of the frame body via the outside of the frame body. It can be easily rotated to the second state located rearward from the front end. Therefore, it becomes possible for a disabled person to ascend and descend from a wheelchair through the shortest distance. Therefore, unlike conventional wheelchairs, there is no need to make a large detour in front of the wheelchair to go up and down, which greatly reduces the burden of movement on the handicapped person, and also prevents injury from tripping over the step support. This makes it possible to effectively prevent even serious accidents. Moreover,
The connection structure between the step support member and the frame body is composed of the connection plate and a mounting plate having an inclined surface on the upper surface, and the step support member can freely rotate from the first state to the second state. With this structure, the step support member can be extremely easily moved from the first state to the second state without the handicapped person touching the step support member.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a wheelchair to which an embodiment of the present invention is applied, Fig. 2 is a perspective view for explaining a conventional wheelchair, and Fig. 3 is an enlarged view of the main part of the embodiment of Fig. 1. FIG. 4 is a perspective view for explaining the state in which the step support member is attached to the frame, and FIG. 5 is a perspective view showing the step support member in the second state. It is an enlarged perspective view of the main part of the said Example in a state. In the figure, 11 is a wheelchair, 12 is a frame body, 21a, 21b are step support members, 22
Reference numerals a and 22b denote footrest steps, 32 a locking blade constituting a locking means, and 33 a locking wall constituting a locking means.

Claims (1)

[Claims for Utility Model Registration] A structure for rotating a footrest disposed at the front part of a wheelchair, which comprises: a first state in which the tip protrudes in front of the frame body of the wheelchair; a step support member rotatably connected to the frame body via the outside of the frame body so that the step support member can assume a second state located at the rear; and a step support member for connecting the step support member to the frame body. a connecting plate provided on the step support member; and an attachment plate provided on the frame body so that the connecting plate slides on the upper surface when the connecting plate is connected, the upper surface of the attaching plate is formed with an inclined surface for freely rotating the step support member from a first state to a second state, and a footrest step connected to the distal end side of the step support member; , further comprising a locking means capable of locking the rotation of the step support member relative to the frame body in order to hold the step support member in the first state. Rotating structure of loading step.