JP3190253U - wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheelchair which does not require an operation for erecting a footrest plate. SOLUTION: A caster 14 as a front wheel and a rear wheel mounted on a main body frame 12, a seat portion for a user to sit on, and a foot for placing a foot on the seat portion when the user is seated. The footrest plate 17 is provided with a first position in which the footrest surface faces upward and lies down with the base attached to the footrest plate frame 15 as the center, and the footrest surface is It is capable of swinging between the second position in an upright position facing sideways, and is always urged by the coil spring 20 so as to swing in the second position direction. Therefore, if the user withdraws from the footrest plate 17, the footrest plate 17 automatically swings due to the urging force of the coil spring 20, and there is a space in front of the seat surface for the user P to get on and off the wheelchair. Secured. [Selection diagram] Fig. 1

Description

  The present invention relates to a wheelchair having a footrest plate.

Conventionally, a wheelchair is generally provided with a footrest plate on which a seated user places his / her foot. An example of such a wheelchair is shown in Patent Document 1. As shown in FIG. 1 and FIG. 2 of Patent Document 1, the footrest plate 48 is disposed at a position where the user puts his / her foot when the user is seated at a position below the front surface of the seating surface 49.
JP 2007-283082 A

  However, in a wheelchair like the conventional patent document 1, every time a user stands or sits, a user or a caregiver stands to make a space for the user to stand in front of the seat. There was a need. Therefore, a wheelchair that does not require an operation for raising such a footrest plate has been demanded.

  As a first means for achieving the above object, a wheel composed of a front wheel and a rear wheel attached to a main body frame, a seat for a user to sit on, and a user in the seat In a wheelchair provided with a footrest plate for placing a foot when the person is seated, the footrest plate has a footrest surface centered on a base portion directly or indirectly attached to the main body frame. It is possible to swing between a first position in a state of lying down facing upward and a second position in a state in which the footrest surface is standing sideways, and is always in the second position direction. The gist is that it is urged by the urging means so as to swing.

  The second means is that, in addition to the first means, the urging force of the urging means can be adjusted.

  According to the present invention, when the seated user removes his / her foot from the footrest plate in the first position, the footrest plate automatically stands up to create a space where the user stands up in front of the seating surface. This eliminates the need for the user or caregiver to stand the footrest plate spontaneously.

Explanatory drawing explaining only the front side of the state in which the user is sitting in the wheelchair of embodiment which is an example of this invention. The disassembled perspective view of the footrest plate in the wheelchair of the same embodiment, and its attachment structure. (A) of the footrest plate in the wheelchair of the same embodiment is a partially cutaway enlarged front view for explaining the lying state, and (b) is a partially cutaway enlarged front view for explaining the standing state. Sectional drawing explaining the contact state to the frame for footrest plates in FIG.3 (a).

Hereinafter, an embodiment of a wheelchair according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, casters 14 as front wheels are disposed at the lower end positions of a pair of left and right front leg frames 13 constituting a part of a main body frame 12 made of an aluminum alloy pipe material of the wheelchair 11. (In the figure, only one (left) front leg frame 13 and caster 14 are shown). Although not shown, a rear wheel, a seating surface, and the like are disposed behind the front leg frame 13 and the caster 14.
A pair of left and right footrest plate frames 15 (hereinafter referred to as frames 15) are joined to the front position of each front leg frame 13. The frame 15 extends obliquely downward from the front leg frame 13 while being curved. A connecting frame 16 is provided between the frame 15 and the front leg frame 13 to reinforce the frame 15 extending in a cantilever shape.
A flip-up type footrest plate 17 is disposed at the lower position of the plate (note that only one (left) footrest plate 17 is shown).

As shown in FIG. 2, the footrest plate 17 is composed of a substantially rectangular plate formed in a rounded corner. An anti-slip slit 18 is formed on the front surface (that is, the footrest surface) of the footrest plate 17, and a rib structure is formed on the back surface (not shown). First to third bearings 17 a to 17 c projecting to the surface side of the footrest plate 17 are formed at the base position of the footrest plate 17. A semicircular stopper surface 19 formed in a notch shape is provided at the base position between the second and third bearings 17b and 17c.
The footrest plate 17 is attached to the inside of the frame 15. The mounting structure of the footrest plate 17 will be described with reference to FIGS.
The footrest plate 17 is provided with a coil spring 20 as an urging means between the first and second bearings 17a and 17b, and is connected to the frame 15 between the second and third bearings 17b and 17c. A bush 21 is arranged. In the footrest plate 17, a nut 22 is inserted by inserting a connecting bolt 24 so that the first to third bearings 17 a to 17 c and each bearing hole 23 of the frame 15 communicate with each other in a state where the nut 22 is disposed outside the third bearing 17 c. Tightened and fixed in cooperation with. In the state where the footrest plate 17 is attached to the frame 15, one end 20a of the coil spring 20 is engaged with the base end face of the footrest plate 17 as shown in FIG. 1, and the other end 20b is engaged with the frame as shown in FIG. It is inserted into an engagement hole 25 formed in the upper part of 15 bearing holes 23. 2 shows the connection structure of the footrest plate 17 to one (left) frame 15, the connection structure of the footrest plate 17 to the right frame 15 (not shown) has a mirror image relationship with this. .

The footrest plate 17 of the wheelchair 11 having such a configuration is in contact with the inside of the frame 15 while being held up by the coil spring 20 as shown in FIG. 3B when no external force is applied. Become. This state is a state at a basic position (second position) where a space where the user P can get on and off the wheelchair 11 can be secured. On the other hand, as shown in FIG. 1, the user P is seated and his / her foot is placed on the footrest plate 17, that is, the footrest plate 17 is laid inward against the holding force of the coil spring 20. In the state 3 (a), the coil spring 20 is in a state of being applied with an urging force (first position). If the foot is withdrawn from the footrest plate 17 in this state, the footrest plate 17 automatically swings by the urging force of the coil spring 20 and returns to the basic position shown in FIG. Here, the return speed can be adjusted by appropriately adjusting the tightening amount by the connecting bolt 24 and the nut 22. In other words, the coil spring 20 is compressed in the axial direction by tightening strongly, and as a result, the frictional force between the coil wires is increased to release the biasing force when the coil spring 20 is biased and return to the basic position direction. It becomes possible to slow down the speed when doing.
As shown in FIG. 4, the stopper surface 19 formed at the base position of the footrest plate 17 contacts the outer peripheral surface of the frame 15, so that the upper surface of FIG. There is no possibility of rocking downwards more than the position where it is.
Since it was set as such a structure, when the user P gets on and off the wheelchair 11, it becomes unnecessary for the user P or a caregiver to raise the footrest plate 17 voluntarily.

Note that the present invention can be modified and embodied as follows.
The above is only an example of the shape of the footrest plate 17 and its mounting structure, and can be realized with other configurations.
-Although the wheelchair 11 which has a pair of right and left footrest plate 17 was demonstrated above, it is also possible to comprise only one footrest plate.
A means other than the coil spring 20 can be used as the biasing means.
In addition, it is free to implement in a mode that does not depart from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 11 ... Wheelchair, 12 ... Main body frame, 17 ... Footrest plate, 20 ... Coil spring as biasing means.

Claims (2)

Wheels composed of front and rear wheels attached to the main body frame, a seat for the user to sit on, and a footrest for placing the foot when the user is seated on the seat In a wheelchair with a plate,
The footrest plate has a first position in which the footrest surface lies down with the base portion attached directly or indirectly to the main body frame, and the footrest surface is lateral. The wheelchair is capable of swinging between the second position standing up and facing and urged by biasing means so as to swing normally in the second position direction. .   The wheelchair according to claim 1, wherein the urging force of the urging means is adjustable.

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