KR20120117027A - Wheelchair - Google Patents

Abstract

PURPOSE: A wheelchair is provided to allow a caregiver easily to move a patient between a wheelchair and a bed by being raised or moved to the adjacent position of the wheelchair or the bed. CONSTITUTION: A wheelchair includes an axle(10), frames(30), a slider(40), link bars(50, 60), and a lever(70). The axle is installed between a pair of wheels and supports the connection of the shafts of the wheels. A first frame is fixed to both lower part of the axle, and auxiliary wheels are mounted at the front lower part of the first frame. A second frame is fixed to the upper part of the first frame. The slider is slidably mounted along the second frame. The center parts of a first link bar and a second link bar are cross-linked by a hinge pin. Both end parts of the link bars are slidably moved along the frames. The lever is rotatably combined with the axle and the hinge pin of the second link bar. The lever elevates the second frame and forwardly moves the slider.

Description

Wheelchair {Wheelchair}

The present invention relates to a wheelchair, and more particularly, by allowing the height of the seat plate to move forwards and backwards simultaneously with a small lifting force through a link structure that is interlocked by interlocking by a rotation operation of a handle for pushing the wheelchair, thereby allowing the patient to wheelchair. When you want to move between the bed and the height of the seat plate to the height corresponding to the bed and to move as close as possible to the bed for a wheelchair that can easily move the patient himself or the caregiver or caregiver.

Wheelchairs are wheeled chairs that allow the disabled, elderly, or disabled to move while sitting.In general, the wheels are rotated by the manual and electric motor's rotational force. In particular, manual wheelchairs are typically configured to be folded or unfolded to minimize volume when mounted on a vehicle.

On the other hand, when a patient with a discomfort, such as an elderly person or a disabled person, descends from another place of a certain height such as a bed and moves to a wheelchair or vice versa, the patient raises his / her upper body due to the height difference between the bed mattress and the wheelchair seat. It is very difficult and inconvenient to win, and if you move too much, you may be injured or cause severe stamina.

For this reason, most of them move with the help and support of a guardian or caregiver. For the caregiver or caregiver, the process of moving the patient is very difficult and cautious, especially for a patient with a large physique. It's not hard to do it anyway.

Accordingly, in recent years, a product has been proposed in which the seat plate and the back of the wheelchair can be elevated so that a relatively serious patient can move from the floor to the wheelchair, from the bed to the wheelchair, or vice versa.

For example, the wheelchair disclosed in the Republic of Korea Patent No. 10-06226399 is a folding link 12 provided between a pair of frame 11, as shown in Figure 1 and 2, and the folding link 12 A seat holder 13 provided on the protruding portion protruding from both sides, a base plate 31 detachably fixed to the seat holder 13, and an upper portion of the base plate 31, and a guide means 5 And a seat 3 including a seat 32 which is lifted and lifted by the lifting means 7; Removably provided between the frame 11 is composed of a power supply means 9 for supplying power to the lifting means (5).

Such a conventional wheelchair can be easily adjusted by the height of the seat 32 by changing the height of the seat 32 by the user operating the lifting means 5 according to the purpose, which is basically considering the weight of the patient Due to the necessity of the power of the structure is complicated, heavy and expensive, as well as the seat 32 is simply raised and lowered by the structure to change only its height, there is a limit in practical convenience.

Accordingly, the present inventors focus on solving the above-mentioned matters and problems, and by adjusting the height of the seat (seat) to a height corresponding to the bed and moving forward as close as possible to the bed by manual operation, the patient himself or Invented and completed the present invention while trying to develop a wheelchair that allows the caregiver or caregiver to move the patient between the wheelchair and bed much easier and easier.

It is therefore an object of the present invention to provide a wheelchair that allows the seat plate to be moved forwards and simultaneously with no power.

Another object of the present invention is to provide a wheelchair that allows the user of the wheelchair to move easily and easily when moving between the wheelchair and the bed.

In order to achieve the above object, an embodiment of the present invention is installed between the left and right pair of main wheels to connect and support the shaft of the main wheels, and fixed to both lower sides of the mandrel, the auxiliary wheel in the lower front Each of the first frame is mounted, a second frame respectively provided at a predetermined interval on the upper portion of the first frame, a slider mounted to be slidably movable along the second frame, respectively, and the seat plate is fixed on the upper surface, and the first A first link bar having both ends slidably moved along the first and second frames, and the first link bar and the center are cross-connected by guide pins, and both ends are slidably moved along the first and second frames. And are rotatably coupled to the second link bar and the guide pins of the mandrel and the second link bar, respectively, and the first and second link bars are mounted in accordance with a rotation operation direction. Second link bar to slide in opposite directions while lifting the second frame provides a wheelchair including a lever for moving forward and backward the slider.

Thus, the present invention can reduce the size of the force required for the movement of the patient by using the principle of the lever can be advanced at the same time as the user lifts the seat sitting with a small force.

In addition, stoppers for limiting sliding movement of the first and second link bars may be formed at both ends of the first and second frames of the present invention, respectively.

In addition, the slider of the present invention, the both ends are inserted and coupled to the movement limiting groove formed in the second frame can be slidingly constrained movement distance.

And another embodiment of the present invention is the support point of the lever lever rotatably located on the wheel axis, the action point of the lever on the hinge axis of the first and second link bar located in front of the wheel axis and connected in scissors It is rotatably coupled to provide a wheelchair configured to advance and simultaneously move the keyboard while the first and second link bar is opened or closed in accordance with the rotation around the support point of the lever.

In addition, guide grooves for guiding the hinge pins fixed to the second link bar to be slidably moved along the first link bar may be formed at the center of the first link bar.

In addition, the upper end of the lever of the present invention, the handle to facilitate the adjustment of the wheelchair and the rotation of the lever may be further provided.

In addition, both ends of the first and second link bars of the present invention may be formed with a sleeve to surround the outer peripheral surface of the first and second frame to elastically deformed to the external force to smooth the sliding movement.

In addition, the front of the seat plate of the present invention, the footrest is formed, the back of the seat plate may be integrally formed.

The present invention having the above-described problem solving means and the configuration is made of a simple structure that advances the seat plate at the same time as the lifting and lowering while the first and second link bar moves in accordance with the rotational direction of the lever acting as a lever In addition to the ability to raise and advance the seat, as well as move the seat up and down as close as possible to the bed as the patient moves up and down between the bed and the wheelchair, one guardian or caregiver makes the patient much easier and easier. Of course, the patient can move to a comfortable posture without difficulty.

1 and 2 is a block diagram showing an example of a wheelchair according to the prior art,
3 is a perspective view showing the overall shape of a wheelchair according to an embodiment of the present invention;
4 is a rear view of FIG. 3;
5 is a perspective view showing a state in which some components of the wheelchair removed according to an embodiment of the present invention;
6 and 7 are side views schematically showing an operating state of a wheelchair according to an embodiment of the present invention;

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions in the present invention, which specifies that the concept should be construed as a concept consistent with the technical spirit of the present invention and commonly understood or commonly recognized in the art.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

On the other hand, in the following description of the configuration of the wheelchair to the side where the wheel is located to the rear, the side where the auxiliary wheel is defined to the front.

3 is a perspective view showing the overall shape of the wheelchair according to an embodiment of the present invention, Figure 4 is a rear view of Figure 3, Figure 5 is a perspective view showing a state in which some components of the wheelchair removed according to an embodiment of the present invention 6 and 7 are side views schematically showing an operation state of a wheelchair according to an embodiment of the present invention.

3 to 7, the wheelchair according to the embodiment of the present invention is a mandrel 10, the first and second frames 20/30, the slider 40, the first and second link bar ( 50/60) and lever 70, and are configured to include the same.

First, the mandrel 10 connects and supports shafts of large wheels, and is installed between a pair of left and right wheels having a relatively large diameter, so that the wheelchair can be folded according to storage and movement. The central portion may be formed to be folded.

And the wheel 11 is provided with a wheel handle (hand rim) so that the user can directly roll by hand.

The first frame 20 supports the mandrel 10 and the auxiliary wheels 21 on which the wheels are mounted. The first frame 20 is fixed to both lower parts of the mandrel 10 and the diameter of the front lower part is lower than that of the wheel 11. Small auxiliary wheels 21 are respectively mounted, and stoppers 22 are formed at both ends of the longitudinal direction, that is, the front and rear ends, to limit the sliding movement interval of the first and second link bars.

In addition, the auxiliary wheel 21 has a structure such as a caster (caster) can be freely converted to the left and right driving direction when the wheelchair forward or backward.

In addition, a front plate of the first frame 20 is formed with a food plate to allow the user to sit comfortably on the foot (food plate), the foot plate is mounted to be folded or rotated in the front or rear direction to minimize interference Can be.

Here, the first frame 20 is preferably made of a tubular body made of a material such as stainless steel or high-strength aluminum alloy, but is not limited thereto, and may be made of a metal or synthetic resin material having excellent physical properties such as durability and strength resistance. In addition, the cross-sectional shape of the tubular body can be manufactured in the form of increasing the structural strength and weight in addition to the general circle or square.

The second frame 30 is installed at regular intervals on the first frame 20 through the first and second link bars. When the slider 40 moves in accordance with the contact of the second link bar 60, the second frame 30 is moved. In order to constrain the movement distance, a movement limiting groove 31 is formed in which side ends of the slider 40 are coupled to the side opposite to the slider 40, and at both ends of the longitudinal direction, that is, at the front and rear ends, And a stopper 32 for limiting the sliding movement interval of the second link bar 50/60.

Like the first frame 20, the second frame 30 is preferably made of a tubular body made of a material such as stainless steel or a high strength aluminum alloy, but is not limited thereto. The metal has excellent physical properties such as durability and strength resistance. Or it may be made of a synthetic resin material, the cross-sectional shape of the tubular body can also be produced in the form of increasing the structural strength and weight reduction in addition to the general round or square.

The slider 40 is fixed to the bottom surface of the seat plate 41 forming a seat and slides along the second frame 30. The slider 40 is pushed while the second link bar 60 is in contact with the rear as it rises. The seat plate 41 is moved while sliding forward by the force.

And at both ends of the slider 40, at least one cylindrical protrusion is formed so that the sliding distance is inserted into the movement limiting groove 31 penetrating in the left and right direction in the second frame 30, and at the movement distance thereof. You will be redeemed.

Here, the front and rear width of the slider 40 is preferably formed so as not to interfere with the sliding operation of the first and second link bar (50/60) between the sleeves of the first and second link bar (50/60). The shape of the slider 40 is not limited thereto, and when the second link bar 60 moves along the second frame 30, contact interference with the second link bar 60 occurs, and thus the first and second link bars may be used. As long as it can be slidably moved by a predetermined distance between the upper ends of the 50/60, for example, the lower part of the slider 40 may be slid in a form surrounding the upper part of the second frame 30.

In addition, the rear of the seat plate 41 is provided with a backrest (42 / back rest) that allows the user to lean on the back while sitting, and the front footrest (43 / food rest) to comfortably support the feet in the front ) Is provided.

Here, the backrest 42 and the footrest 43 may be formed to be bent inwardly or inclined at a predetermined angle, may be rotatably connected to the seat plate 41 or may be installed through a separate frame. have.

In addition, the seat plate 41 and the backrest 42 and the footrest 43 has a cushion layer so that the user can be seated comfortably, a sponge or cotton to give elasticity to the surface can be attached to a predetermined thickness In addition, it can be configured to be easily folded when storing and moving the wheelchair by dividing the middle part. In this case, the center of the slider 40 may also be formed to be foldable together with the seat plate 41, the backrest 42 and the footrest 43 in a hinged connection structure.

Both ends of the first link bar 50 are slidably movable along the first and second frames 20/30, and the upper end of the first link bar 50 is slidably movable with a predetermined section in front of the second frame 30. And, the lower end thereof is mounted to be slidably movable with a certain interval from the rear of the first frame 20, the hinge pin 61 fixed to the second link bar 60 in the center of the first link bar ( A guide groove 51 is formed to guide the sliding movement along a lengthwise direction of the 50 so that the first and second link bars 50/60 can be smoothly folded and slid.

In addition, the first and second frames 20/30 surround the outer circumferential surfaces of the first link bar 50 so that the first and second frames 20/30 may be elastically and flexibly deformed to the external force, and thus the first and second frames 20/30 may be moved or lifted at the time of lifting and reversing. A sleeve 52 having a joint structure for smoothly sliding and sliding with the second link bar 50/60 is formed.

In particular, the sleeve 52 formed at the upper end of the first link bar 50 sliding along the second frame 30 is formed with a contact surface of a predetermined size so as to facilitate contact interference with the slider 40.

Here, the sleeve 52 has a first link bar 50 having flexibility such as rubber or synthetic resin having elastic deformation force of a property that causes elastic deformation when the external force is applied and returns to the original shape when the force is removed. ) And joint function of smoothly alleviating and absorbing the impact of lifting and falling of the first link bar 50 and the lifting of the first frame 20 at the connecting portion between the first and second frames 20/30. It is preferable to form from the raw material to make.

Both ends of the second link bar 60 are slidably movable along the first and second frames 20/30. The second link bar 60 has a central portion in the longitudinal direction thereof so as to slide in the opposite direction to the first link bar 50. 1 crosses the center of the link bar 50 and is connected in a hinged manner.

That is, the first link bar 50 and the second link bar 60 are crossed in the same shape as the 'X' and are combined in a point symmetrical form. For this purpose, a hinge pin 61 is formed at the center of the second link bar 60. Is formed, and a guide having a predetermined width and length to be slidably moved in a predetermined section while the hinge pin 61 of the second link bar 60 is inserted in the center of the first link bar 50 facing the same. The groove 51 is formed.

And similarly to the first link bar 50, the first and second frames 20/30 are wrapped around the outer circumferential surface of the second link bar 60 in the longitudinal direction both ends, and the sliding movement is performed without being moved or separated during lifting and moving forward and backward. The sleeve 62 of the joint structure which makes this smooth is formed.

Here, the sleeve 62 of the second link bar 60 also has flexibility such as rubber or synthetic resin having elastic deformation force of elastic properties when the external force causes elastic deformation and returns to its original shape when the force is removed. While gently connecting the second link bar 60 and the first and second frames 20/30, the folding of the second link bar 60 and the first frame 20 smoothly alleviate the impact caused by lifting and It is preferable to form the material which exhibits the joint function to absorb stably.

The lever 70 serves as a lever, and is rotatably coupled to the shaft of the mandrel 10 and the guide pin 61 of the second link bar, while lifting the second frame 30 according to the rotation direction while the slider ( 40) to move forward.

The lever 70 is located between the wheel 11 and the first and second link bars 50/60, and has a shaft hole 71 for coupling and coupling with a mandrel at its center in a substantially 'ι' shape. Is formed, the front end is formed with a link hole 72 for connecting and coupling the guide pin 61.

That is, the shaft hole 71 rotatably coupled to the mandrel 10 supporting the wheel shaft functions as a support point of the lever 70, and is positioned in front of the wheel shaft and is connected in a scissors shape to the first and second link bars 50. The link hole 72 rotatably coupled to the hinge pin 61 of the / 60 function as a function of the lever, and the user rotates the lever 70 because the handle 73 to be described below functions as a force point of the lever. As the shaft hole 71 is rotated about the axis, the position of the link hole 72 is changed, and the first and second link bars are opened or retracted to move the seat plate 41 up and down at the same time.

In addition, a handle 73 is attached to the rear upper end of the lever 70 so that a user such as a guardian or a caregiver can hold the handle 73 and move the wheelchair. The lever 70 may be easily rotated by force to raise the seat plate 41 while the patient is sitting.

Here, the handle 73 may be formed integrally with the lever 70, and preferably, one end of each of the handles 73, one end of each of the levers 70, so as to facilitate the rotation operation of the lever 70 by holding the wheelchair. It may be formed in a form fixed to the upper end.

Referring to the operation of the wheelchair according to an embodiment of the present invention configured as described above are as follows.

First, when moving a patient between a wheelchair and a bed, a user such as a guardian or a caregiver grabs a handle 73 serving as a force point of the lever and pushes down to rotate the lever 70 coupled thereto. The link bar 50/60 is moved up and down while slidingly moving in opposite directions along the first and second frames 20/30.

That is, when the lever 70 is rotated toward the ground and the mandrel 10 is rotated about the axis, the upper end of the first link bar 50 is advanced and the lower part is reversed. In contrast, the upper end of the second link bar 60 is reversed. Since the reverse and the lower end is advanced, the first frame 20 is raised by its action.

At the same time, the sleeve 52 formed at the upper end of the first link bar 50 is brought into surface contact with the rear surface of the slider 40 to push the slider 40 forward, and thus the seat plate fixed to the upper surface of the slider 40. (41) is to go forward naturally as you ascend.

Therefore, even when the patient is sitting on the seat plate 41, the height of the seat plate 41 is adjusted to the height corresponding to the bed with a small force, and moved to the state as close as possible to the bed, so that the patient himself or his / her guardian or caregiver moves the patient from the wheelchair to the bed. A very advantageous advantage is that it is much easier and easier to move from the road or bed to the wheelchair.

On the other hand, the present invention is not limited by the above-described embodiment and the accompanying drawings, it is possible to change and apply to other embodiments equivalent and substituted within the scope not departing from the technical spirit of the present invention. It will be apparent to those of ordinary skill in the art.

10: mandrel 11: wheel
20: first frame 21: auxiliary wheel
22: stopper 30: second frame
31: Restriction Home 32: Stopper:
40: slider 41: seat
50: first link bar 51: guide groove
52: sleeve 60: second link bar
61: hinge pin 62: sleeve
70: lever 71: shaft hole
72: link hole 73: handle

Claims (8)

A mandrel installed between a pair of left and right wheels to connect and support shafts of the wheels;
A first frame fixed to both lower sides of the mandrel and the auxiliary wheels respectively mounted on the front lower portion;
Second frames each provided at a predetermined interval on an upper portion of the first frame;
Sliders each mounted to be slidably movable along the second frame and having a seat plate fixed to an upper surface thereof;
First link bars respectively mounted at both ends of the first and second frames to be slidably movable;
A second link bar having a first link bar and a center thereof connected to each other by a hinge pin, and having both ends slidably moved along the first and second frames;
The slider is rotatably coupled to the hinge pin of the mandrel and the second link bar, and the slider moves forward while the second frame is lifted by sliding the first and second link bars in opposite directions according to the rotation manipulation direction. A lever for moving;
Wheelchair including.
The method of claim 1,
At both ends of the first and second frames,
The wheelchair, characterized in that each stopper for limiting the sliding movement of the first and second link bar is formed.
The method of claim 1,
The slider
Both sides of the wheelchair is characterized in that the sliding movement is inserted and coupled to the movement restriction groove formed in the second frame.
A support point of the lever lever is rotatably positioned on the wheel shaft, and an operating point of the lever is rotatably coupled to the hinge shafts of the first and second link bars positioned in front of the wheel shaft and connected in scissors. Wheel chair characterized in that the first and second link bar is opened or retracted in accordance with the rotation of the support point to move the keyboard at the same time as moving up and down.
The method according to any one of claims 1 to 4,
In the center of the first link bar,
And a guide groove for guiding the hinge pin fixed to the second link bar to slide along the first link bar.
The method according to any one of claims 1 to 4,
At the top of the lever,
Wheelchairs, characterized in that the handle is further provided to facilitate the adjustment of the wheelchair and the rotation operation of the lever.
The method according to any one of claims 1 to 4,
Both ends of the first and second link bar wheelchair, characterized in that the sleeve is formed to surround the outer circumferential surface and the elastic deformation to the external force to smooth the sliding movement.
The method according to any one of claims 1 to 4,
A footrest is integrally formed at the front of the seat plate, and a backrest is integrally formed at the rear of the seat plate.

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