KR20180073966A - The wheelchair to transform a bed - Google Patents

Abstract

Disclosed is a wheelchair capable of being used as a bed, the wheelchair comprising a leg support, a seat and a backrest. The leg support and the backrest include a user support which is pivotally connected to the seat so that the wheelchair is transformed into a bed shape; a lifting device positioned below the user support to lift the user support, and having a pair of X-shaped link members spaced apart from each other, LM guide members installed to two ends of four ends of the link members which are opposite to each other in a vertical direction, to guide transverse movement of two ends, and a first linear actuator for pushing or pulling a connecting bar connecting the pair of link members to fold or unfold the link members; and a transverse moving device connected to a lower portion of the user support to slide the user support, the first linear actuator having an LM guide module connected to the user support to guide sliding movement of the user support, and a second linear actuator connected to the user support to pull or push the user support.

Description

THE WHEELCHAIR TO TRANSFORM A BED

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bed-adjustable wheelchair, and more particularly, to a bed-adjustable wheelchair that automatically deforms a wheelchair into a bed shape and lifts and deforms a deformed bed shape and simultaneously moves it to a desired place.

Wheelchairs are wheelchair-mounted vehicles designed for wheelchair users who have difficulty standing or walking, or who need to sit in a stable position, and usually have four-wheel wheels. These wheelchairs are designed to be smuggled from the back by an assistant and have been designed to be driven by the patient himself. A wheelchair of a generally used type has two rear wheels with a large wheel and a small wheel (casters) in front, and can be folded, one-handed, with a manual chain, and various other purposes . Among these various types of wheelchairs, there is a wheelchair in which the seat of the patient is raised so as to raise the patient or move the patient higher than the sitting position.

However, this conventional wheelchair (see U.S. Patent No. 6,935,648) can only move the patient from a sitting state to a high position, so that it is useless for a patient who can not lay his / her body properly and can only lie down. In particular, a patient in a wheelchair is moved to a bed provided at a treatment or treatment site after moving to a treatment or a medical treatment site. In this way, when the patient moves from a wheelchair to a bed, The second type of injury is the most common, and conventional wheelchairs are at risk.

In order to solve this problem, there is a need for a bed-variable wheelchair capable of transporting a lying patient and raising the patient to the height of a treatment bed and then safely transporting the patient to a bed.

A problem to be solved by the present invention is to provide a method and apparatus for adjusting a bed, which can be varied into a bed, can raise a patient to a desired height, move horizontally from a raised point to a treatment bed, Bed variably wheelchair.

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

According to an aspect of the present invention, there is provided a bed variable wheelchair including a legrest portion, a seat portion and a backrest portion, wherein the legrest portion and the backrest portion are rotatably connected to the seat portion, A pair of "X" -shaped link members spaced apart from each other by a predetermined distance, and a pair of "X" -shaped link members disposed vertically in the four ends of the "X" An LM guide member provided at two opposing ends to guide horizontal movement of the two ends and a connecting bar connecting the pair of "X" shaped link members are pushed or pulled to form a pair of "X & And a first linear actuator for folding or unfolding the first and second linear actuators, A horizontal moving device comprising a LM guide module coupled to a user support and guiding a sliding movement of a user support, and a second linear actuator coupled to the user support to push or pull the user support.

According to the present invention, there is provided a bed variable wheelchair which can be changed into a bed, can raise a patient to a desired height, can horizontally move from a raised point to a treatment bed, Can be provided.

1 is a photograph showing a wheelchair mode of a bed-adjustable wheelchair according to an embodiment of the present invention.
2 is a photograph showing a bed mode of a bed-adjustable wheelchair according to an embodiment of the present invention.
3 is a perspective view illustrating a wheelchair mode of a bed variable wheelchair according to an embodiment of the present invention.
4 is a perspective view illustrating a bed mode of a bed-type wheelchair according to an embodiment of the present invention.
5 is a side view of a bed variable wheelchair according to an embodiment of the present invention.
6 is a front view showing an elevating device of a bed variable wheelchair according to an embodiment of the present invention.
7 is a perspective view illustrating a horizontal moving apparatus for a bed variable wheelchair according to an embodiment of the present invention.
FIG. 8 is a photograph showing a part of a horizontal movement device of a bed variable wheelchair according to an embodiment of the present invention.
FIG. 9 is a side view illustrating an operation process of a bed moving apparatus for a bed variable wheelchair according to an embodiment of the present invention.
10 is a photograph showing an operation process of a horizontal movement device for a bed variable wheelchair according to an embodiment of the present invention.
11 is a side view of a user support of a bed variable wheelchair according to an embodiment of the present invention.
FIG. 12 is a side view illustrating a modification process of an armrest of a bed variable wheelchair according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms " comprises "and / or" comprising ", as used herein, do not exclude the presence or addition of one or more other elements, steps and operations.

1 to 12, a bed-adjustable wheelchair according to an embodiment of the present invention will be described. 1 is a photograph showing a wheelchair mode of a bed-adjustable wheelchair according to an embodiment of the present invention. 2 is a photograph showing a bed mode of a bed-adjustable wheelchair according to an embodiment of the present invention. 3 is a perspective view illustrating a wheelchair mode of a bed variable wheelchair according to an embodiment of the present invention. 4 is a perspective view illustrating a bed mode of a bed-type wheelchair according to an embodiment of the present invention. 5 is a side view of a bed variable wheelchair according to an embodiment of the present invention.

6 is a front view showing an elevating device of a bed variable wheelchair according to an embodiment of the present invention. 7 is a perspective view illustrating a horizontal moving apparatus for a bed variable wheelchair according to an embodiment of the present invention. FIG. 8 is a photograph showing a part of a horizontal movement device of a bed variable wheelchair according to an embodiment of the present invention. FIG. 9 is a side view illustrating an operation process of a bed moving apparatus for a bed variable wheelchair according to an embodiment of the present invention. 10 is a photograph showing an operation process of a horizontal movement device for a bed variable wheelchair according to an embodiment of the present invention. 11 is a side view of a user support of a bed variable wheelchair according to an embodiment of the present invention. FIG. 12 is a side view illustrating a modification process of an armrest of a bed variable wheelchair according to an embodiment of the present invention.

1 to 12, a bed-adjustable wheelchair 200 according to an embodiment of the present invention includes a user support portion 190, a horizontal movement device 210, and a lifting device 50. [

The user support portion 190 includes a leg support portion 130, a seat portion 140 and a backrest portion 150. The leg support portion 130 may be rotatably connected to one end of the seat portion 140, The backrest part 150 may be rotatably connected to the other end of the seat part 140. Therefore, the bed-adjustable wheel chair 200 according to the embodiment of the present invention is in a chair-shaped wheelchair mode at any point, and the leg support unit 130 and the backrest unit 150 The leg support 130, the seat 140, and the backrest 150 can be transformed into a bed mode having a bed shape having a straight shape. This variation allows the user (or patient) to sit on the bed-adjustable wheelchair 200 and also to lie down.

The user support portion 190 may include a linear actuator for rotating the leg support portion 130 and the back support portion 150 about the seat portion 140 to have a straight shape. The user support portion 190 includes a third linear actuator 160 for rotating the leg support portion 130 relative to the seat portion 140 and a third linear actuator 160 for rotating the back support portion 150 relative to the seat portion 140, And may further include an actuator 170.

11, the third linear actuator 160 and the fourth linear actuator 170 are installed in the user support part 190. The piston rod of the third linear actuator 160 is connected to the leg support part 130 And the third linear actuator 160 is connected to the bracket formed at the lower portion of the seat portion 140 so that the third linear actuator 160 can be installed in the user support portion 190 . When the piston rod of the third linear actuator 160 protrudes under such an installation structure, the legrest portion 130 rotates and forms a straight line with the seat portion 140. When the piston rod enters, the legrest portion 130 The seat portion 140 is bent in the opposite direction.

The piston rod of the fourth linear actuator 170 is connected to the bracket formed at the rear of the backrest part 150 and the motor part of the fourth linear actuator 170 is connected to the bracket formed at the lower part of the seat part 140, 4 linear actuator 170 may be installed in the user support portion 190. When the piston rod of the fourth linear actuator 170 protrudes under such an installation structure, the backrest part 150 is pivotally moved with respect to the seat part 140. When the piston rod is inserted into the seat back part 150, And takes a straight shape with respect to the seat portion 140.

It is needless to say that the leg support portion 130, the seat portion 140 and the backrest portion 150 are formed in a straight shape by using the third linear actuator 160 and the fourth linear actuator 170, The angle of the leg support portion 130 with respect to the seat portion 140 and the angle of the backrest portion 150 with respect to the seat portion 140 can be adjusted as desired by the user. Thus, the positional relationship between the legrest portion 130, the seat portion 140, and the backrest portion 150, which the patient feels most comfortable, can be formed.

As described above, since the linear actuator is used to rotate the leg support portion 130 and the backrest portion 150, the auxiliary equipment required when using other driving means such as a hydraulic device is not required, So that it becomes easy to use.

11, the pivotal axis 180 of the leg support portion 130 with respect to the seat portion 140 may be positioned in the seat portion S with respect to the horizontal direction. On the contrary, when the pivot shaft of the leg rest portion is located away from the seat portion, the total length of the wheel chair and the total length of the wheelchair varying in bed are changed in the course of the bed- And the body part of the backrest of the user's knee such as the back of the user's leg is in contact with the turning shaft, the user's back is not able to touch the back of the user in the wheelchair mode and the user can feel inconvenience .

In the case of the present invention, since the pivotal axis 180 of the leg rest 130 is positioned in the seat S 140 with respect to the horizontal direction, the bed variable wheelchair 200 according to the present invention is placed in the bed mode The turning shaft 180 of the legrest portion 130 does not cause any inconvenience to the user and the user can sit comfortably in the wheelchair.

The horizontal moving device 210 is a device for horizontally moving the user supporting part 190, which is variable in bed shape, to a desired place. Generally, a patient in a wheelchair is moved to a treatment or treatment site, and then the patient is moved to a bed provided at the treatment or treatment site. As the patient moves from the wheelchair to the bed, the patient can not be moved to the bed correctly, resulting in the second most frequent injury.

In consideration of such conventional problems, the bed variable wheelchair 200 according to the present invention is configured such that the user supporting portion 190 is deformed into a bed shape and then the user supporting portion 190 deformed into a bed shape is moved using the horizontal moving device 210 And is horizontally moved to the bed. In this case, it is possible to prevent a secondary accident caused by carelessness of the caregiver that may occur during the movement process, and also to reduce the fatigue of the caregiver (or caregiver), thereby improving the working environment or the nursing environment.

That is, the horizontal movement device 210 is a device for sliding the user support part 190 in both directions with respect to the width direction while being connected to the lower part of the user support part 190. For this purpose, as shown in FIG. 7, A second linear actuator 135 connected to the user support unit 190 and connected to the user support unit 190 to guide the sliding movement of the user support unit 190 and to push or pull the user support unit 190, ).

The LM guide module may include a first LM guide module 90 and a second LM guide module 120 spaced apart from the first LM guide module 90 along the horizontal direction, ) May include three LM guides (60, 70, 80) including two guide bearings and two LM bearings spaced on the guide rods. The three LM guides 60, 70 and 80 in the first LM guide module 90 have a shape provided with two pieces 70 and 80 at the bottom and one piece 60 at the top, At least one LM guide 70 of the LM guides 70 and 80 may be provided with a resilient member 75 such as a spring on the guide rod between the two LM bearings 71 and 73.

The second LM guide module 120 may include two LM guides 100 and 110 including two LM bearings spaced apart from the guide rods and guide rods. The two LM guides 100, 110 may be positioned up and down.

When the LM guide module is connected to the user support portion 190, both end portions of the guide rod of the LM guide 60 installed on the upper portion of the first LM guide module 90 are connected to the frame of the user support portion 190 And both end portions of the guide rod of the LM guide 100 installed on the upper portion of the second LM guide module 120 may be connected to the frame of the user support portion 190. Accordingly, as the guide bar of the LM guide module moves horizontally, the user support portion 190 also moves horizontally (see FIG. 10).

As described above, the elastic member 75 is provided on the guide rod of the LM guide 70 provided at the lower portion of the first LM guide module 90, The gap between the two LM bearings 71 and 73 is not narrowed below a certain distance, and stable sliding of the user support portion 190 can be ensured. After the user support part 190 has been moved to one side and the patient is transferred to another bed, the elastic force of the elastic member 75 existing between the two LM bearings 71 and 73 causes the user support part 190 It can help you move back in.

The second LM guide module 120 also includes two LM guides 100 and 110 while the first LM guide module 90 includes three LM guides 60, have. The reason why the first LM guide module 90 includes the three LM guides 60, 70 and 80 is that when the patient is lying on the bed-type user support part 190, 190 may cause deflection, and in particular, there may be a risk of an accident such as the user support portion 190 being rotated in the longitudinal direction because the deflection amount of the backrest portion 150 is large. To prevent this, three LM guides (60, 70, 80) are included in the first LM guide module (90) that can be located under the backrest (150) to prevent rotation of the user support Thereby allowing the patient to be transported safely.

Next, the horizontal movement device 210 includes a second linear actuator 135 that provides a driving force for horizontal movement of the user support portion 190 (see Figs. 9 and 10A), and the second linear actuator 135 May be connected to the frame of the user support portion 190 and the motor portion may be connected to the frame of the horizontal movement device 210. [ Accordingly, when the piston rod of the second linear actuator 135 protrudes, the user support unit 190 horizontally moves in the protruding direction, and when the piston rod is inserted, the user support unit 190 horizontally moves in the opposite direction.

In addition, when the operation range of the stroke of the second linear actuator 135 is about 250 mm, the user support portion 190 can be horizontally moved in both directions by the horizontal movement device 210, Can move up to 125mm each from the center of the stroke to the left and right at 125mm. Of course, the operating range of 250 mm is only an example, and the range can be adjusted as desired.

The use of the linear actuator to provide the driving force of the horizontal movement does not require an auxiliary equipment required when using other driving means such as a compressor and a hydraulic device. As a result, the cost of manufacturing the wheelchair is reduced and the overall shape is not increased, So that it becomes easy to use the wheelchair without any restriction.

The elevating device 50 is a device for elevating and lowering the user support portion 190 while being positioned below the user support portion 190, particularly below the horizontal movement device 210. After the height of the patient lying on the bed-shaped user support portion 190 is adjusted to the height of the bed to be examined through the elevating device 50, the patient can be horizontally moved and safely moved to the bed.

To this end, the lifting device 50 may include a pair of "X" shaped link members 10 spaced apart in the width direction of the user support portion 190, and the "X" The user support portion 190 located on the upper portion of the "X" -shaped link member 10 can be raised or lowered. In the case of the present invention, two "X" -shaped link members 10 are used. By using the two "X" -shaped link members 10, the load of the patient is divided into two "X" Is distributed to the link member (10), and the moment is reduced during operation, thereby enhancing safety. In addition, since the limit of the load that can be actually lifted becomes high, it is possible to reduce the cost of material selection.

The LM guide member 20 may be provided at two ends of the four ends of the "X" -shaped link member 10, which face each other in the vertical direction. The LM guide member 20 has two end portions And is a member for guiding horizontal movement. And the remaining two vertically opposed ends can be fixed to the frame of the elevating device 50. That is, as the pair of " X "shaped link members 10 are folded or unfolded, the two vertically opposed ends of the" X "shaped link member 10 are moved horizontally along the LM guide member 20 .

In this way, by applying the LM guide member 20 to the pair of "X" shaped link members 10, the problem of using the pair of "X" It is possible to prevent the occurrence of twisting due to the difference of the rising and falling speeds between the link members 10 and the breaking phenomenon thereof.

The first linear actuator 40 may be provided with a pair of first linear actuators 40 to provide a driving force to fold or unfold a pair of "X" shaped link members 10, The user pushes or pulls the connecting bar 30 connecting the link members 10 in the "X" shape in the width direction, thereby folding or unfolding the pair of " . 6, the connecting rod 30 connecting the pair of "X" -shaped link members 10 may be provided, and the piston rod of the first linear actuator 40 may be connected to the connecting rod 30, (30), and the motor unit can be connected to the lower frame of the elevating device (50). Accordingly, when the piston rod of the first linear actuator 40 is projected, a pair of "X" shaped link members 10 are folded so that the user support portion 190 rises, The link member 10 of the "X" shape is lowered by the spread book user support portion 190.

By using the linear actuator to provide the driving force for lifting and lowering the user support portion 190, there is no need for an auxiliary equipment required when using other driving means such as a compressor and a hydraulic device. As a result, The shape is not increased, so that the operation is facilitated without being restricted by the installation place, and the use of the wheelchair becomes convenient.

12, the bed-adjustable wheelchair 200 according to an embodiment of the present invention may further include an armrest member 240, which includes a first armrest portion 220, And a second armrest portion (230). One end of the first armrest portion 220 can be pivotally connected to the seat portion 140 and the other end can be pivotally connected to the second armrest portion 230. One end of the second armrest portion 230 And the other end may be rotatably connected to the backrest part 150. The first armrest part 220 may be rotatably connected to the other end of the first armrest part 220,

Accordingly, as the backrest part 150 and the seat part 140 are formed in a flat shape in the process of changing the user support part 190 into a bed shape, the first armrest part 220 and the second armrest part 230 are also formed in a straight shape And does not protrude from the frame of the user support portion 190. In this case, the user support portion 190 is not caught by the armrest member 240 in the process of sliding the user support portion 190 into the bed located next to the user, so that it is easy to slide the user support portion 190. Further, there is an advantage that the armrest member 240 is structurally formed in a straight shape by using a coupling method that does not require any additional power so that the armrest member 240 is in a straight shape.

In addition, the bed-adjustable wheelchair 200 according to an embodiment of the present invention may further include a wheel, which may be a lower portion of the wheelchair 200 and may be a caster wheel capable of rotating by 360 degrees , There may be four wheels, but the type and number of wheels are not limited thereto. Each of these wheels may be provided with a locking device, and the movement of the wheel may be restricted by using the locking device to prevent the wheelchair 200 from moving.

In addition, the bed variable wheelchair 200 according to an embodiment of the present invention can be operated by a remote controller that is configured separately from the body of the bed variable wheelchair 200. Therefore, the use of a wheelchair is convenient, and a caregiver who is not only a patient but also a certain distance from a wheelchair can easily manipulate a wheelchair, thereby making the care of a patient more convenient.

In addition, a rechargeable battery may be mounted to provide power to the linear actuator used in the present invention. In this case, the rechargeable battery may be an AGM type, but is not limited thereto. Also, instead of the built-in battery, external power may be supplied, which may include a socket for grounding the external socket and an inverter for adjusting the external voltage to an appropriate voltage.

The driving of the bed variable wheelchair 200 described above, that is, the elevation movement, the horizontal movement motion and the angle adjustment by the linear actuator and the LM guide can be controlled by the controller, and when the user selects a desired adjustment amount through the remote controller, So that the driving of the bed variable wheelchair 200 can be controlled.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: "X" shaped link member 20: LM guide member
30: connecting bar 40: first linear actuator
50: lifting device 60, 70, 80, 100, 110: LM guide
71, 73: LM bearing 75: Elastic member
90: first LM guide module 120: second LM guide module
130: leg support portion 135: second linear actuator
140: seat portion 150: backrest portion
160: third linear actuator 170: fourth linear actuator
180: Pivot shaft 190: User support
200: bed variable wheelchair 210: horizontal movement device
220: first armrest part 230: second armrest part
240: absent armrest member

Claims (5)

A leg support portion, a seat portion, and a backrest portion, wherein the legrest portion and the backrest portion are rotatably connected to the seat portion to be changed into a bed shape;
A pair of "X" -shaped link members spaced apart from each other by a predetermined distance; and a pair of guide rails provided at four ends of the "X & An LM guide member provided at two opposing ends to guide the horizontal movement of the two ends and a connecting bar connecting the pair of "X" shaped link members to push or pull the pair of "X & And a first linear actuator for folding or unfolding the link member of the first linear actuator; And
A horizontal movement device connected to a lower portion of the user support portion and slidably supporting the user support portion, the LM guide module being connected to the user support portion and guiding the sliding movement of the user support portion, And a second linear actuator that pulls the second linear actuator. The method according to claim 1,
The LM guide module includes a first LM guide module and a second LM guide module spaced apart from the first LM guide module,
Wherein the first LM guide module includes three guide poles and two LM guides including two LM bearings spaced apart from the guide rods,
Three LM guides have a shape provided with two at the bottom and one at the top, and one of the LM guides installed at the bottom is a bed variable wheelchair having an elastic member provided on the guide rod between the two LM bearings . The method according to claim 1,
The user support portion further comprises a third linear actuator for rotating the leg support portion with respect to the seat portion and a fourth linear actuator for rotating the backrest portion relative to the seat portion. The method of claim 3,
And the pivot axis of the legrest portion is located in the seat portion with respect to the longitudinal direction. The method according to claim 1,
Further comprising an armrest member comprising a first armrest portion and a second armrest portion,
One end of the first armrest portion is rotatably connected to the seat portion and the other end is rotatably connected to the second armrest portion, and one end of the second armrest portion is rotatably connected to the other end of the first armrest portion And the other end is rotatably connected to the backrest portion,
Wherein the first armrest portion and the second armrest portion are in the shape of a straight line in a process of changing the user support portion into a bed shape so that the user support portion can be slid.

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