KR200372818Y1 - Wheel Chair equipped with Seat elevating device - Google Patents

Abstract

The present invention constitutes a basic frame of a wheelchair and has a handle, armrests and a footrest provided with a body part; A seating unit provided with a seat for seating the body by the user, a backrest, and a seating unit frame integrally coupling the seat and the backrest; A driving unit having a front wheel and a rear wheel coupled to the lower portion of the vehicle body and driven; And a lifting unit for elevating the seating unit. The wheelchair is provided with a lifting unit, characterized in that the height of the seating unit is automatically adjusted by the operation of the lifting unit.

Description

Wheelchair equipped with lifting means {Wheel Chair equipped with Seat elevating device}

Technical Field

The present invention relates to an improvement plan of a wheelchair (Wheel Chair) used by patients or those who are inconvenient to move, and relates to a wheelchair equipped with means for freely adjusting the height of the seat.

Prior art

Wheelchairs are used when people with disabilities or elderly people move around. Fixed wheels (rear wheels) and pivot wheels (front wheels) are attached to both sides of the seat (chair) that supports the body. Rotate the handrim to move to the desired place.

In addition, in the case of an electric wheelchair, even if the handrim does not rotate, the rotational force of the electric motor is transmitted to the fixed wheel, thereby allowing a more convenient place movement.

In the case of such a conventional wheelchair, the height of the seating part on which the user mounts the body is mostly fixed to a predetermined height, and some height adjustments are also possible to adjust the height to a predetermined height to suit the user's body shape before use. It was. In other words, the height of the seating portion is always constantly fixed at the time of use.

As such, when the height of the seating part is fixed, a user who is uncomfortable with movement may sit on the seating part, or get up from the seating part and move or move to another place.

In other words, the difference between the height of the seating part of the wheelchair and the height of the bed, sofa, toilet, etc. in the room, the seating process and the seating process from the wheelchair may not be very difficult for the inconvenient user. Can't.

In particular, when the patient stays on the floor without using the bed, the height difference between the bottom surface and the wheelchair seat is inevitably increased, and thus, the patient may be more difficult to use the wheelchair.

The purpose of the present invention created to solve the above problems is as follows.

First, the object of the present invention is to provide a means for adjusting the height of the wheelchair seat.

Second, another object of the present invention is to provide a lifting means that can maintain the height of the seating portion to a predetermined height without a separate brake device.

Third, another object of the present invention is to provide a lifting means for automatically adjusting the height of the seating portion.

Fourth, it is another object of the present invention to make the seat constituting the seating part can be used as a toilet seat according to the situation.

Figure 1 is a perspective view of a specific embodiment of the present invention shows a seated portion is lowered.

Figure 2 is a perspective view of a specific embodiment of the present invention shows a state in which the seating portion is raised.

Figures 3a, 3b and 3c shows the structure of the lifting unit which is a component of a specific embodiment of the present invention.

Figure 4 is a perspective view of a seating unit that is a component of a specific embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: vehicle body 110: the handle

120: armrest 130: footrest

200: Seating section 210: Sheet

212: support part 214: center part

216: an incision

220: backrest 230: seat frame

300: drive 310: front wheel

320: rear wheel

400: up and down part

410: motor 420: reduction gear unit

430: screw bar 440: guide rail

450: lifting plate 455: female thread

460: guide roller

500: switch unit

The composition of the present invention created to achieve the above object is as follows.

The present invention constitutes a basic frame of a wheelchair and has a handle, armrests and a footrest provided with a body part; A seating unit provided with a seat for seating the body by the user, a backrest, and a seating unit frame integrally coupling the seat and the backrest; A driving unit having a front wheel and a rear wheel coupled to the lower portion of the vehicle body and driven; And an elevating unit for elevating the seating unit. The height of the seating unit is automatically adjusted by the operation of the elevating unit.

Hereinafter, with reference to the accompanying drawings, a specific embodiment of the present invention will be described in detail.

1 illustrates a state in which the seating unit is lowered as a specific embodiment of the present invention, and FIG. 2 illustrates a state in which the seating unit is raised.

1 and 2, the present invention constitutes a basic frame of a wheelchair and includes a body part 100 having a handle 110, an armrest 120, and a footrest 130; A seating part 200 provided with a seat 210 for seating the body by the user, a backrest 220, and a seating part frame 230 for integrally coupling the seat 210 and the backrest 220; A driving part 300 having a front wheel 310 and a rear wheel 320 coupled to the lower portion of the vehicle body part 100 and driven; And, the lifting unit 400 for elevating the seating unit 200; is configured to include the height of the seating unit 200 by the operation of the lifting unit 400 is automatically adjusted.

The body part 100 constitutes a basic frame of a wheelchair, and a handle 110 used when a third person pushes the wheelchair, an armrest 120 for mounting a user's arm, and a user's foot can be mounted. Footrest 130 and the like is provided in the lower portion of the body portion 100 is coupled to the front wheel 310 and the rear wheel 320 provided with a hand rim that can be rotated left and right.

The seating unit 200 is provided with a seat 210 and a backrest 220 for seating the user's body, and the seating unit frame 230 combines the seat 210 and the backrest 220 integrally.

Lifting unit 400 is to perform the function of raising and lowering the seating unit 200 as shown in Figures 3a, 3b and 3c, an electric motor 410 mounted to the vehicle body portion 100; A reduction gear unit 420 connected to an output shaft of the electric motor 410; A screw bar 430 coupled to the vehicle body part 100 in a vertical direction and interlocked with the reduction gear part 420; A guide rail 440 coupled to the vehicle body part 100 in a vertical direction; A lifting plate 450 mounted to the seating unit frame 230 and having a female screw part 455 screwed to the screw bar 430; A guide roller 460 extending from the left and right ends of the seating unit frame 230 and flowing up and down along the guide rail 440; And a switch unit 500 for controlling the operation of the electric motor 410.

The electric motor 410 is mounted to the vehicle body part 100 so that the rotation direction is switched according to the operation of the switch unit 500.

The reduction gear unit 420 is connected to the output shaft of the motor 410 to reduce the rotational speed of the motor and at the same time increase the rotational force to rotate the screw bar 430.

The reduction gear unit 420 may be applied in various forms, and a worm gear may be adopted as one of them.

If worm gear is adopted, power transmission in the reverse direction is limited, and when the motor stops, it automatically brakes and about one third of the deceleration effect can be obtained.

In other words, the rotational force of the electric motor 410 is transmitted to the screw bar 430 through the worm gear, but the motor 410 cannot be rotated by rotating the screw bar 430. This is because power transmission in the reverse direction is limited due to the inherent characteristics of the worm gear.

The screw bar 430 is engaged with the reduction gear unit 420 to receive the rotational force of the electric motor 410 to interlock.

The screw bar 430 is coupled to the vehicle body portion 100 in the vertical direction as shown in Figure 3 and receives the rotational force of the electric motor 410 through the reduction gear portion 420.

Guide rails 440 are coupled to the vehicle body part 100 in the vertical direction on the left and right sides of the screw bar 430. That is, the screw bar 430 and the guide rail 440 are coupled to the vehicle body part 100 side by side in the vertical direction.

The elevating plate 450 is integrally mounted to the seating frame 230 and is provided with a female screw, and is screwed to the screw bar 430.

Drive wheels are further provided at the left and right ends of the elevating plate 450 so that the elevating operation of the elevating plate 450 can be made more flexible.

By such a configuration, the rotational force of the electric motor 410 is transmitted to the screw bar 430 through the reduction gear unit 420, and the screw bar 430 is rotated.

The elevating plate 450 is screwed with the screw bar 430 and is provided extending from the left and right ends of the seating frame 230 and the guide roller 460 flowing up and down along the guide rail 440. Is coupled to the guide rail 440 integrally coupled with the vehicle body portion 100, even if the screw bar 430 is rotated lifting plate 450 is limited to rotation.

Therefore, the lifting plate 450 moves up and down as the screw bar 430 rotates.

In addition, the seating unit frame 230 is integrally coupled with the elevating plate 450, the lifting and lowering of the seating unit 200 is made in accordance with the rotation of the screw bar 430.

In addition, the height of the place where the screw bar 430 and the elevating plate 450 is coupled and the height of the place where the guide roller 460 is in contact with the guide rail 440, the seat frame 230 The load due to the weight of the user is distributed to the screw bar 430 and the guide rail 440.

That is, the guide rail 440 and the screw bar 430 are inclined at a predetermined angle in the vertical direction, the force generated by the bar guide roller 460 presses the guide rail 440, the guide roller 460 and the guide rail A friction force is generated between the 440 to share the load transmitted from the seat frame 230.

As such, by distributing the load transmitted to the seating frame 230, the lifting and lowering operation can be performed more smoothly and the durability of the product can be improved.

The switch unit 500 may be provided in the wheelchair itself as a function of manipulating whether the electric motor 410 is rotated and the rotation direction thereof, or may be separately separated from the wheelchair to enable wired and wireless remote control.

In addition, the seat 210 of the seating unit 200, the incision 216 is formed in a predetermined size and shape in the center and the support portion 212 is integrally coupled to the seating unit frame 230; And a central portion 214 configured to have a size and shape corresponding to that of the cutout of the support part 212 and to be detachably coupled to the cutout 216.

As such, when the seat 210 includes the support 212 and the center 214, the center 214 may be separated from the seat 210 when necessary. That is, by separating the central portion 214 can convert the seat 210 into a toilet seat, it is possible to solve the physiological phenomenon in a seated state of the wheelchair of the present invention.

In other words, it is used like a normal wheelchair, but when necessary, it can be used as a toilet seat.

In addition, the seat 210 is composed of a support portion 212 and the center portion 214, as shown in Figure 4 may be separated from the center portion 214, if necessary to convert the sheet 210 into a toilet seat, Although not shown, the seat 210 may be manufactured for daily use and toilet seat, respectively, so that the entire seat 210 may be separated and replaced from the seating unit frame 230 according to a required use.

In other words, the seat 210 may be selectively used for daily use and toilet seat.

Technical effects according to the present invention of the above configuration is as follows.

First, the height of the wheelchair seat can be adjusted.

In other words, the present invention is provided with a lifting portion that can adjust the height of the seating portion can operate the lifting portion to adjust the seating portion to a predetermined height.

Therefore, the height of the seat can be adjusted from time to time according to the needs of the user, the user can be more easily seated in the wheelchair or seated from the wheelchair. In other words, if you want to sit in a wheelchair after lying on the floor, you can move the height of the seat to the lowest point.If you want to sit in a wheelchair while you are in bed, set the height of the seat to the height of the bed sheet. After moving, you can be seated, and if you are standing up with a person sitting on a wheelchair, or if you are up on your back, you can move the height of the seating section to suit this behavior.

Second, even without a separate brake device, the height of the seat can be maintained at a predetermined height.

In other words, the lifting part of the present invention includes a lifting plate that moves up and down along the screw bar. When the rotation of the screw bar stops, the female thread provided on the elevating plate is screwed to the screw bar, so that the elevating plate can not be raised or lowered unless the screw bar is rotated again. The addition can be maintained at a predetermined height.

In addition, when the worm gear is mounted on the output shaft of the motor, the power transmission in the reverse direction is limited due to the inherent characteristics of the worm gear.In the state where the screw bar is engaged with the worm gear, the rotational force of the motor is transmitted to the screw bar through the worm gear. It is not possible to transmit the rotational force of the screw bar to the motor through the worm gear by rotating it.

That is, the screw bar can be rotated only by the rotation of the electric motor, and unless the screw bar is rotated, the elevating plate can not be raised or lowered, and even if a separate brake device is not provided, the seating part can be maintained at a predetermined height. have.

Third, the height of the seat can be adjusted automatically.

In other words, the present invention includes a lifting unit including an electric motor, so that the seating unit can be adjusted to a predetermined height by a simple switch operation, so that the elderly can conveniently adjust the height of the seating unit to a desired position.

Fourth, when the seat of the seat is composed of a support portion and the central portion to separate the central portion becomes a structure that can be utilized as the toilet seat.

In addition, the seat can be manufactured and replaced separately for daily use and toilet seat.

Therefore, it is possible to simply solve the toilet in a state seated in the seating part according to the situation, it is possible to promote the convenience of the user inconvenient behavior.

Claims (6)

A body part comprising a basic frame of a wheelchair and provided with a handle, an armrest and a footrest; A seating unit provided with a seat for seating the body by the user, a backrest, and a seating unit frame integrally coupling the seat and the backrest; A driving unit having a front wheel and a rear wheel coupled to the lower portion of the vehicle body and driven; And, An elevating unit for elevating the seating unit; Is configured to include a wheelchair equipped with lifting means characterized in that the height of the seating portion is automatically adjusted by the operation of the lifting unit. The method of claim 1, wherein the lifting unit, An electric motor mounted to the vehicle body part; A reduction gear part connected to an output shaft of the motor; A screw bar coupled to the vehicle body in a vertical direction and interlocked with the reduction gear part; A guide rail coupled to the vehicle body in a vertical direction; A lifting plate mounted to the seating unit frame and having a female screw unit screwed to the screw bar; Guide rollers extending from the left and right ends of the seating unit frame and flowing up and down along the guide rails; And, A switch unit controlling the operation of the electric motor; Wheelchair equipped with lifting means characterized in that comprises a. 3. The wheelchair of claim 2, wherein the reduction gear part comprises a worm gear. According to claim 2 or 3, wherein the seat of the seating portion, A support portion formed at a central portion with a predetermined size and shape and integrally coupled to the seating portion frame; And, A central part configured to have a size and a shape corresponding to the cutout of the support, and to be detachably coupled to the cutout; Wheelchair with a lifting means characterized in that consisting of. According to claim 2 or 3, wherein the seat of the seating portion, Wheelchairs equipped with lifting means, characterized in that each is made for daily use and toilet seat is coupled to the seat frame detachably and selectively available for daily use and toilet seat. According to claim 4, The switch unit is provided with a lifting means, characterized in that separate from the wheelchair can be remotely controlled.