KR101788567B1 - Wheelchair equipped the tilting seat unit - Google Patents

Abstract

The present invention relates to a wheelchair provided with a variable seat unit, comprising: a frame unit; a variable seat unit including a link portion, a seat portion coupled to a first link, and a back support portion coupled to a second link, wherein the link portion includes the first link whose one end is rotationally coupled to a first point of the frame unit, a third link whose one end is rotationally coupled to a second point of the frame unit, and the second link rotationally coupled to the other end of the first link and the other end of the third link; and a mobile unit movably coupled to the frame unit. The present invention provides a wheelchair that prevents interference with the wheelchair when a user uses a walking assist device that can be used with the wheelchair.

Description

WHEELCHAIR EQUIPPED THE TILTING SEAT UNIT BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wheelchair, and more particularly, to a wheelchair having a variable seat unit capable of tilting to selectively use the functions of a walking aid and a wheelchair.

Wheelchairs are widely used as a means for assisting the movement of an object in which the walking function of the elderly, the disabled, etc. is decreased or lost. Such a wheelchair includes a seat on which a user's body is seated, and has a structure capable of moving manually or electrically.

In addition, in recent years, a walking aiding device capable of performing rehabilitation training for a person having a decreased walking ability in addition to the above-mentioned wheelchair has been widely used and used. Such a walking aiding device can implement a walking motion by electrically driving the device while the user is standing on the device, and the user can exercise the walking motion according to the motion of the device.

However, since the wheelchair and the walking aiding device are separated from each other in the related art, there is a problem that the user who wants to use the walking aiding device needs to visit the specific place where the walking aiding device is installed. Especially, the user who uses the walking aid device is in a state where the function of the lower limb is decreased.

In order to solve this problem, a wheelchair capable of selectively using a wheelchair and a walking aid device such as Korean Patent No. 10-1536586 filed by the applicant of the present invention can solve the aforementioned problems.

However, the conventional 10-1536586 invention has a possibility that a user may cause interference with a wheelchair when using the walking aid. In addition, since the walking aids are focused on a part of the lower half of the body, there were inconveniences for a long time.

Accordingly, a method for solving such problems is required. The present invention provides a wheelchair in which a mechanical mechanism is simpler than a conventional invention by preventing a phenomenon of interference with a wheelchair when using a walking aid, in particular. When using a walking aid, the flexibility of the waist and pelvis is increased to make the user comfortable and long-term use.

Korean Patent No. 10-1536586

SUMMARY OF THE INVENTION The present invention is conceived to solve the problems of the prior art described above, and it is an object of the present invention to provide a wheelchair that prevents a phenomenon of interference with a wheelchair when a user uses a walking aid that can be combined with a wheelchair.

And a pedometer unit for increasing the degree of freedom of movement of the pelvis when the pedometer is used.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to attain the above object, the wheelchair provided with the variable seat unit according to the present invention includes a frame unit, a first link whose one end is rotatably coupled to a first point of the frame unit, A link portion including a third link rotatably coupled and a second link rotatably coupled to the other end of the third link and the other end of the first link, a seat portion coupled to the first link, A variable seat unit having a backrest coupled to the second link, and a mobile unit movably coupled to the frame unit.

The link portion is disposed such that the first point is located at the upper left of the second point, and the first link and the third link are mutually stepped.

Further, the link portion is connected so that the second link rotates in the opposite direction at the same angle as the rotation of the first link.

The wheel chair having the variable seat unit includes a cylinder unit connecting the variable seat unit and the frame unit such that the link unit rotates at a predetermined angle.

The cylinder unit may include a first cylinder having one end rotatably coupled to the frame unit and a second cylinder having one end rotatably coupled to a portion of the first link, One of the second cylinders is installed to be inserted into the other cylinder.

The wheelchair provided with the variable seat unit may include a first frame coupled to the backrest, a walking unit fixed to a part of the lower half of the user, and a second frame coupled to the first frame and the walking unit, And a pacemaker unit rotatably connected to the pelvis.

The pelvis includes a second frame rotatably coupled to the first frame on the basis of the forward and backward axes, and a third frame rotatably coupled to the second frame on the basis of the upper and lower axes do.

The pelvis includes a calibrating member for connecting the third frame and the gait to allow the gait to be rotatable with respect to the upper and lower axes, in order to compensate for the motion of the outer frame or the like.

In order to solve the above-described problems, the walking assist device provided with the pelvis unit of the present invention has the following effects.

First, according to the degree of tilting of the variable seat unit, there is an advantage that the functions of the wheelchair and the walking aiding device can be shared.

Second, the user has the advantage of performing the rehabilitation training by using the walking assist device regardless of the specific time and place for the rehabilitation training.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing a state of a wheelchair according to the present invention.
2 is a view showing a tilting process of a wheelchair according to the present invention.
3 is a view showing a fully tilted state of a wheelchair according to the present invention.
4 is a view showing a rotation of a link portion of a wheelchair according to the present invention.
5 is a view showing the movement of the cylinder unit interlocked with the rotation of the link portion of the wheel chair of the present invention.
6 is a view showing a wheelchair to which the walking aiding device of the present invention is coupled.
7 is a view showing a wheelchair to which a walking aid is coupled in a tilted state according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

The present invention relates to a wheelchair, and has a structure that can be used also as a walking aiding device. When the wheelchair is used as a walking aiding device, it has a mechanism that tilts the wheelchair so that interference does not occur.

The wheelchair of the present invention includes a frame unit 100, a variable seat unit 200, and a mobile unit 400.

The frame unit 100 is provided in a general shape of a wheelchair and has at least one frame.

The mobile unit 400 is movably provided in the frame unit 100 of the wheelchair. The mobile unit 400 may have a general wheel shape and may be driven by the front wheel rear wheel.

The variable seat unit 200 is provided with a link portion 220, a seat portion 240, and a back portion 260.

The link portion 220 may be installed with a first link 222, a second link 224, and a third link 226.

The wheelchair can be tilted by the rotation of the first link 222, the second link 224, and the third link 226 of the link unit 220.

The first link 222 is rotatably coupled to the first point 120 of the frame unit 100 at one end. And the third link 226 is rotatably coupled to the second point 140 of the frame unit 100 at one end. The second link 224 is rotatably coupled to the other end of the first link 222 and the other end of the third link 226.

The other end of the first link 222 and the other end of the third link 226 are coupled to the second link 224 so that the first link 222, the second link 224, or the third link 226 Rotation of the link portion 220 becomes possible by rotation of any one of the links.

The rotation of the link portion 220 adjusts the angle of rotation so that the wheelchair of the present invention can be suitably used for a patient. For example, patients lying on their legs with gips on both legs are very uncomfortable to move or go out. In addition, the patient's sense of discomfort is very limited because of the limited field of view. However, the above-described problem can be solved through the rotation of the link portion of the present invention.

That is, by rotating the link portion at a certain angle so that the patient feels comfortable, the patient can be assured of a front view. Also in the movement, it is possible to move more conveniently through the rotation of the link portion.

The seat portion 240 is fixed to the first link 222 as a seat for the user of the wheelchair to sit on.

The backrest 260 can be leaned by a user of the wheelchair and is provided on the second link 224. [ And the walking assist unit 500 is coupled to the backrest unit 260 so that the backrest unit 260 can be used as a wheelchair.

The seat portion 240 and the backrest portion 260 are provided in the link portion 220 so that the seat portion 240 and the backrest portion 260 rotate together with the rotation of the link portion 220.

1 to 4, a tilting structure of a wheelchair according to the present invention will be described.

The structure in which the wheelchair is tilted is due to the rotational movement of the link portion 220.

4 is a view illustrating a link unit 220. A first point 120 of the frame unit 100 to which the first link 222 of the present invention is coupled is connected to the frame unit 100 to which the third link 226 is coupled 100 at the upper left of the second point 140.

Therefore, the first link 222 and the third link 226 are provided with a difference of up, down, left, and right.

That is, the first link 222 and the third link 226 can rotate about the first point 120 and the second point 140, respectively. The first link 222 rotates to a virtual circle drawn around the first point 120 and the third link 226 rotates along a virtual circle drawn about the second point 140. [

When the lengths of the first link 222 and the third link 226 are the same due to the difference in position between the first point 120 and the second point 140, 1 to maintain the axis perpendicular to the ground during the rotation process from the neutral position in Fig. 1 to the tilted position in Fig.

Specifically, when the wheelchair is in the neutral position as shown in FIG. 1, the first point 120 is positioned to the left of the second point 140, and the second link 224 is formed to protrude forward. And the backrest portion 260 is attached to the second link 224 perpendicularly to the ground in consideration of this.

2, the second link 224 rotates according to the virtual circle drawn by the first link 222 and the virtual circle drawn by the third link 226 during the tilting of the wheelchair. During the process of tilting, the second link 224 maintains a shape such that the top projects forward as in the neutral position.

Also, when the wheelchair is tilted as shown in FIG. 3, the second link 224 maintains the shape as shown in FIG. 1, and the backrest 260 is vertically positioned on the ground.

The link portion 220 may be provided such that the second link 224 is rotated in the opposite direction with the rotation of the first link 222 but at the same angle as the rotation of the first link 222.

This is for the effect of the present invention, which is used both as a wheelchair and a walking aiding device. That is, in the course of the walking practice of the present invention, when the backrest 260 is tilted to the ground, the user can comfortably practice the walking.

The second link 224 may be provided to connect the other end of the third link 226 with the first link 222 forming an inter-step difference as described above.

The structure of the cylinder unit 300 of the present invention will be described with reference to FIG.

The wheelchair equipped with the variable seat unit 200 of the present invention may be provided with a cylinder liner unit.

The cylinder unit 300 can connect the variable seat unit 200 and the frame unit 100 such that the link unit 220 rotates at a predetermined angle.

The cylinder unit 300 may be a linear actuator coupled with a power unit, or may be non-powered.

The tilting structure of the wheelchair is enabled by the link portion 220, and the cylinder unit 300 enables the link portion 220 to be tilted to a certain angle. That is, the position of one end of the cylinder unit 300 connected to the frame unit 100 of the wheelchair may be located behind the position of the other end of the sealer unit 300 connected to the link unit 220.

In this embodiment, the cylinder unit 300 may include a first cylinder 320 and a second cylinder 340.

One end of the first cylinder 320 may be rotatably coupled to a part of the frame unit 100. The second cylinder 340 may be rotatably coupled to a portion of the first link 222 at one end.

In addition, either the first cylinder 320 or the second cylinder 340 may be installed to be inserted into the other cylinder. Accordingly, it is possible to restrict mutual movement of the first cylinder 320 and the second cylinder 340.

Specifically, the first cylinder 320 is coupled to the frame unit 100 such that a point of engagement with the frame unit 100 of the first cylinder 320 is positioned behind the second point 140. This is to prevent interference.

The combined length of the first cylinder 320 and the second cylinder 340 at the neutral position of the wheelchair of FIG. 1 is configured to be minimum. However, in the process of tilting the wheelchair as shown in FIG. 2, the combined length of the first cylinder 320 and the second cylinder 340 gradually increases, and the combined length of the wheelchair of FIG. 3 is maximized when the wheelchair is completely tilted.

When the wheelchair is completely tilted as shown in FIG. 3, the first and second cylinders 320 and 340 are constrained to each other such that the combined length of the first cylinder 320 and the second cylinder 340 does not increase.

6 and 7, a wheelchair that also serves as a walking aid according to the present invention will be described.

For use as a walking aid, the wheelchair may be fully tilted as shown in FIG. 7, the link portion 220 is tilted forward so as to prevent the lower end of the walking aiding unit 500 from interfering with the wheel chair when the walking aiding unit 500 is used.

Further, in order to prevent the link portion 220 from rotating in a tilted state, the stopper may further be connected. The stopper may be rotatably connected to a part of the variable seat unit 200 and a part of the frame unit 100.

This is to prevent the link unit 220 from rotating when the user uses the walking aiding unit 500 to walk backward while walking.

However, in the case where the walking assistant unit 500 is connected to the backrest unit 260 so as to be aligned with the user's key when fully tilted as shown in FIG. 7, the stopper only serves as an assistant. This is because the case of fully tilting is not the maximum height of the backrest portion 260, and the possibility that the link portion 220 is rotated to the neutral position is small.

The above-described walking aiding unit 500 may be provided with the first frame 520, the walking unit 540, and the pelvis 560.

The first frame 520 may be coupled to the backrest portion 260 of the wheelchair to be opposed to the back of the user. The first frame 520 connects and supports the left and right configurations of the walking aiding unit 500. Therefore, the position is not limited as long as it can achieve this.

According to the present embodiment, the first frame 520 is provided so as to oppose the back of the user and connects the pelvis 560 provided on the left and right of the walking aiding unit 500. And helps the pelvis 560 of the walking aid unit 500 to come into close contact with the user's waist and pelvis.

In addition, since the first frame 520 may have different sizes of portions to be worn for each user, lengths of the first frames 520 may be adjusted.

Specifically, the first frame 520 may be provided so that the length of the first frame 520 can be adjusted in the left and right directions when viewed from the front of the walking aiding unit 500. That is, two plates can be combined so that the length can be adjusted left and right on one flat plate. For example, the above-mentioned one flat plate and two plates connected to the left and right sides can be formed with holes, and the lengths can be adjusted according to the positions where the holes are mutually coupled. However, the above-described embodiment is only one embodiment, and the shape is not a problem if it can be realized by a single plate.

The walking unit 540 is fixed to part or all of the lower half of the user to assist the user in walking. That is, if the user can wear the pelvis, the thighs, the lower legs, and the lower body, which refers to the foot, as well as a part thereof, the part is not limited.

The gait unit 540 is generally fixed to a part or all of the above-described lower body and is positioned in the same position according to the movement of the user. The walking unit 540 can support the lower half of the user for safe walking. In addition, a power unit can be provided to help the user to walk naturally. As an example of the walking unit 540, a non-powered walking aiding apparatus (Korean Patent Registration No. 10-1559060) filed and registered by the applicant of the present invention can be referred to. Details will be described later.

The power unit can be provided and operated for all of the lower half of the body. In addition, the power unit may be provided only for a part of the lower half of the body which is deemed to lack the force required for walking.

The pelvis 560 corresponds to the back and pelvic region of the user's body. Generally, it will be configured to wrap around the user's waist and pelvis area.

The pelvis 560 is rotatably connected to the first frame 520 and the walking unit 540 in association with the movement of the pelvis accompanied by the user when the user of the walking aid unit 500 is walking.

The pelvis 560 is provided to enable lateral pelvic tilt and pelvic rotation, which are typical pelvic movements accompanied by walking.

Specifically, in order to realize the movement of the tilt of the pelvis, the pelvis 560 can couple the first frame 520 and the walking unit 540 with respect to the forward and backward directions of the user. In order to realize the movement of the pelvis rotation, the pelvis 560 can be coupled to the first frame 520 and the walking unit 540 so as to be rotatable with reference to the upper and lower directions of the user.

If the pelvis 560 is rotatably connected to the first frame 520 and the gait part 540, there is no problem in the form or rotation method.

However, the method in which the first frame 520 of the pelvis 560 and the gait 540 are rotatably connected must physically rotate at a constant angle. This is due to the physical characteristics of the exoskeleton.

The pelvis 560 serves to increase the degree of freedom in the movement of the pelvis when the user wears it.

Therefore, the user can wear the walking aid unit 500 comfortably for a long time with less foreign body feeling.

According to the present embodiment, the pelvis 560 may include a second frame 562 and a third frame 564.

The second frame 562 is provided so as to correspond to the back of the waist portion of the user, and realizes the movement of the tilt of the pelvis.

The second frame 562 can connect the first frame 520 and the third frame 564 so as to be rotatable with respect to the forward and backward directions of the user when the walking aiding unit 500 is viewed from the front have.

That is, one end of the second frame 562 is connected to one end of the first frame 520, and can rotate at a predetermined angle with respect to the front and rear axes of the user.

Accordingly, when the user walks by walking the walking aid unit 500 of the present invention, the second frame 562 can rotate with the inclination of the pelvis, which is the movement of the user's pelvis.

In addition, the second frame 562 may be provided to be adjustable in length.

This is because the position and size of the bone skeleton are different for each user wearing the walking aiding unit 500. The content of the length adjustment of the second frame 562 is the same as or similar to that of the length adjustment of the first frame 520 described above.

The third frame 564 is provided so as to correspond to the side of the waist of the user, and realizes the movement of the pelvis rotation.

The third frame 564 can connect the second frame 562 and the walking unit 540, which will be described later, so as to be rotatable with respect to the upper and lower directions of the user when looking at the walking aiding unit 500 have.

That is, one end of the third frame 564 is connected to the other end of the second frame 562 and can rotate at a certain angle with respect to the upper and lower axes of the user.

Therefore, when the user walks by walking the walking aid unit 500 of the present invention, the third frame 564 can be rotated in conjunction with the rotation of the pelvis, which is the movement of the user's pelvis.

In addition, the third frame 564 may be provided so as to be adjustable in length, and the length of the third frame 564 is the same as or similar to the length of the first frame 520 and the second frame 562.

According to the present embodiment, a portion of the second frame 562, to which the second frame 562 and the third frame 564 are coupled, may include protrusions formed to project forward.

The protruding portion should be provided such that the second frame 562 is rotatable with respect to the forward and backward directions at a portion where the second frame 562 is engaged with the first frame 520, Direction, as shown in FIG.

That is, the second frame 562 rotates the first frame 520 and the third frame 564 with respect to a certain axis, respectively. The second frame 562 may be formed in a shape having such a protrusion since the first frame and the third frame 564 must be connected to each other so that each of the above-described rotations can be performed.

According to the present embodiment, the pelvis 560 may include a calibration member 566. [

The calibration member 566 may be coupled to the third frame 564 and the gait unit 540 to compensate for movement or movement along the circumference.

Here, regarding the walking of the outsider and the outsider, the outermost position means that the user's walking gait is directed outwardly, or the user is walking inward.

Specifically, the correction member 566 can connect the third frame 564 and the walking unit 540 so as to be rotatable with respect to the upper and lower directions of the user when the walking aiding unit 500 is viewed from the front side .

That is, the gait part 540 can also rotate about the upward and downward directions by the rotation of the calibration member 566 in the upward and downward directions.

An embodiment of the calibration member 566 is as follows. If the user is walking outside in the outward direction, the calibration member can be rotated inward to guide the user to walk properly. In addition, when the user is walking inward, the rightward step can be induced by rotating the calibration member in the outward direction.

At this time, the calibration member 566 need not necessarily rotate left and right, and can be rotated to be adjustable to the user.

According to the present embodiment, the walking unit 540 may include a walking frame unit and a walking power unit.

And the walking frame portion is fixed in close contact with the lower body of the user.

The walking power section means that the movement of the walking frame section is assisted by using the power.

In general, the walking frame portion may be composed of a femoral member corresponding to the thigh of the user, a corresponding member corresponding to the calf of the user, and a foot member corresponding to the foot of the user.

The femoral member is connected to the third frame 564 of the pelvis 560 and constitutes the upper end of the walking frame part and can be rotated with reference to the upward and downward directions of the user by the rotation of the above-

In addition, since the femoral member should be positioned like the movement of the thigh of the user, the femoral member should be rotatable with respect to the left and right directions of the user.

The leg-restoring member is coupled to the lower portion of the thigh-like member and is rotatably provided on the basis of the left and right directions of the user for the same or similar reason as the thigh-like member.

The foot-corresponding member is coupled to the lower portion of the leg-corresponding member and is rotatably provided on the basis of the left and right directions of the user for the same or similar reason as the leg-corresponding member and the leg-corresponding member.

The above-mentioned foot-corresponding member, the leg-corresponding member, and the foot-corresponding member of the walking frame member must be provided so as to be adjustable in length. This is for the convenience of the user, and the position and length of each part may be different for each user wearing the walking aid unit 500.

The walking power section may include a first power section for assisting the movement of the femoral member, a second power section for assisting the movement of the leg-corresponding member, and a third power section for assisting the movement of the foot-corresponding member.

The walking power section is not limited as long as it can assist the movement of the walking frame section, and power transmission by a motor is generally used.

However, even in the case of the non-dynamic force without the walking power, there is no problem in using the walking aiding unit 500. Therefore, the walking unit may be composed of only the walking frame unit without the walking power unit.

Further, according to the present embodiment, the walking frame portion may include a grab member. The grab member is coupled to either the thigh-corresponding member or the hip-corresponding member. The grab member helps each part of the body to be seated on the walking frame part when the user wears the walking aid unit 500. The shape of the grapple member may be a part of a circle. However, it is not limited to such a shape, but it may be anything as long as it is for realizing the above purpose.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: frame unit 120: first point
140: second point 200: variable seat unit
220: link portion 222: first link
224: second link 226: third link
240: seat portion 260: backrest portion
300: cylinder unit 320: first cylinder
340: second cylinder 400: mobile unit
500: a walking aiding unit 520: a first frame
540: a walking part 542: a walking frame part
544: walking power unit 560: pelvis
562: second frame 564: third frame
566:

Claims (8)

A frame unit;
A first link whose one end is rotatably coupled to a first point of the frame unit, a third link whose one end is rotatably coupled to a second point of the frame unit, and a third link, A variable seat unit having a link portion including a second link rotatably coupled to the other end of the first link, a seat portion coupled to the first link, and a backrest portion coupled to the second link; And
A mobile unit movably coupled to the frame unit; And
A first frame coupled to the backrest, a pedometer fixed to a portion of a lower half of the user, and a pelvis rotatably connecting the first frame and the pedometer to interlock to increase the degree of freedom in pelvic movement accompanying the user's walking, A walking assistant unit provided on the vehicle;
/ RTI >
Wherein,
When the wheelchair is tilted, the first point is located on the left upper side of the second point so that interference with the wheelchair does not occur when walking on an obtuse angle based on the neutral position, and the first link and the third link are mutually stepped Respectively,
A stopper connecting a part of the variable seat unit and a part of the frame unit so as not to rotate when the link part is tilted;
/ RTI >
The pelvis part
A second frame rotatably coupled to the first frame on the basis of an anteroposterior axis and a backward axis in order to realize movement of a tilt of the pelvis along with walking; And
A third frame rotatably coupled to the second frame on the basis of the upper and lower axes to implement the movement of the pelvis rotation accompanying the walking;
And a control unit for controlling the wheelchair.
delete The method according to claim 1,
Wherein the link portion is provided with a seat unit to which the second link is connected so as to rotate in the opposite direction at the same angle as the rotation of the first link.
The method according to claim 1,
In the wheelchair provided with the variable seat unit,
A cylinder unit connecting the variable seat unit and the frame unit such that the link unit rotates at a certain angle;
And a control unit for controlling the wheelchair.
5. The method of claim 4,
The cylinder unit includes:
A first cylinder having one end rotatably coupled to the frame unit; And
A second cylinder having one end rotatably coupled to a portion of the first link;
Lt; / RTI >
Wherein one of the first cylinder and the second cylinder is installed to be inserted into the other one of the first and second cylinders, and the variable seat unit restricting mutual rotation.
delete delete The method according to claim 1,
The pelvis part
A correction member for connecting the third frame and the gait to allow the gait to be rotatable with respect to the upper and lower axes, in order to compensate for movement along the outer or inner surface;
And a variable seat unit.

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