KR20220030058A - Bed wheelchair for patient transfer - Google Patents

Abstract

The present invention relates to a wheelchair for transferring patients, and more specifically, to a bed wheelchair for transferring patients, which can be changed into a bed shape after a backrest unit and a footrest unit (500) are rotated so as to allow a patient sitting on a wheelchair to lie thereon. To this end, the bed wheelchair for transferring patients according to the present invention comprises: a link unit (100) which is fixed to a base frame (A) provided with wheels at both sides; a single cylinder unit (200) which operates the link unit; a seat unit (300) which receives climbing force by means of the operation of the link unit; a backrest unit (400) which is rotated downward to the rear side so as to be located on the same horizontal plane as the seat unit by means of the operation of the link unit; and a footrest unit (500) which is rotated upward at the front side of the seat unit while being unfolded by means of the operation of the link unit. Therefore, fabrication costs can be reduced.

Description

Bed wheelchair for patient transfer}

The present invention relates to a wheelchair for transferring a patient, and more particularly, to a bed wheelchair for transferring a patient in which a backrest and a footrest are rotated so that a patient sitting in the wheelchair can be laid down to form a bed.

BACKGROUND ART In general, a wheelchair is a mobility aid device to help the disabled, the patient, or the elderly with limited mobility to move comfortably, and the frequency of use is increasing due to the recent increase in the elderly population.

Such a wheelchair is composed of a frame part on which wheels are mounted, a seat part installed in the frame part, a backrest part, and a footrest part. .

However, such a wheelchair is effective to simply use for the purpose of moving the patient, but when the patient wants to sleep and rest, he must get up from the wheelchair and move to a place such as a bed.

However, in the case of a patient with reduced mobility, since they cannot get up from a wheelchair and lie down on their own, they need the help of at least two people, and the risk of falling in the process of moving them to the bed is very high.

In particular, since the height of the bed is considerable, it is urgent to improve this since it leads to a serious life-threatening accident when the patient is a severely elderly or disabled person during a fall.

In order to improve this problem, the "electric wheelchair capable of changing multiple posture modes" disclosed through Korean Patent Application Laid-Open No. 10-2020-0068846 is known.

The electric wheelchair is configured such that a plurality of cylinders are installed in the frame, and the angles of the backrest and the footrest are independently changed by driving each cylinder.

In such a conventional electric wheelchair, when each cylinder is driven to rotate the backrest and footrest so that the patient is in a horizontal state, the patient sitting in the wheelchair will naturally lie down. There is this.

However, the conventional electric wheelchair must have two or more cylinders in order to rotate the backrest and the footrest, and since each cylinder must be operated separately, it is cumbersome to use, and considering that the cylinder is expensive There is a problem in that the production cost greatly increases.

Domestic Patent Publication No. 10-2020-0068846

The present invention has been devised to solve the above problems, and it is an object of the present invention to provide a bed wheelchair for patient transport that is easy to use and can reduce manufacturing costs because a plurality of cylinders are not required to rotate the backrest and the footrest There is this.

In order to achieve the above object, the bed wheelchair for patient transport of the present invention includes a link unit fixed to a base frame having wheels on both sides, a single cylinder unit for driving the link unit, and driving the link unit. The seat portion to which the lifting force is applied, the backrest portion rotated downward to the rear so as to be positioned on the same horizontal plane as the seat portion through the driving of the link unit, and the seat portion rotated upwardly and unfolded at the same time in front of the seat portion through the driving of the link unit includes a footrest.

In addition, the link unit includes a seat elevating link unit for movably supporting the seat unit, a backrest rotation link unit connected to the rear of the seat elevating link unit to rotate the backrest while interlocking the seat elevating link unit, and the seat elevating/lowering link unit. It may be provided with a footrest folding link portion connected to the front of the link portion to fold the footrest while interlocking along the seat elevating link portion.

In this case, the seat elevating link portion includes a pair of first frames fixed to face both sides of the base frame, a first link hinged on an upper portion of each first frame, and a hinge-coupled upper portion of the first link. a second frame, a second link hinged to an upper portion of the second frame, a third frame hinged to an upper portion of the second link and supporting the seat portion; A third link having an upper body hinged to the front end of the second frame and a lower body extending from the lower end of the upper body, connecting the first frames facing each other, and allowing the rear end of the cylinder unit to rotate at the center A fourth frame coupled to the lower body of the third links facing each other may include a fifth frame to which the front end of the cylinder unit is rotatably coupled to the center.

In addition, the backrest pivoting link portion has a fixed end to which the backrest portion is fixed, a fourth link hinged to the rear end of the third frame, a fifth link hinged to the rear end of the fourth link, A sixth link hinged at both ends to the rear end of the fifth link and the second frame, a seventh link connecting the lower end of the fifth link and the rear end of the first frame, and a rear end of the first frame, It may be provided with a guide groove for guiding the end of the seventh link orbiting along the fifth link.

In addition, the footrest may be divided into a calf support and a sole support.

In this case, the footrest folding link portion includes an eighth link hinged to the front end of the third frame, and a ninth hinge-coupled ninth link to the lower end of the lower body of the third link so as to be folded while forming an X shape with the eighth link. a link, a tenth link having a fixed end to which the calf rest is fixed, a tenth link hinged to an end of the ninth link, and an eleventh link having both ends hinged to the center of the tenth link and an end of the eighth link, respectively A link, a twelfth link hinged to the center of the eleventh link, a thirteenth link hinged to the ends of the tenth link and the twelfth link, and a thirteenth link hinged to the end of the footrest.

In addition, a seat fixing bracket coupled to the third frame may be installed on the lower surface of the seat unit.

In addition, a backrest fixing bracket having guide jaws surrounding both sides of the fixed end of the fourth link is fixed to the rear surface of the backrest to enable lifting and lowering along the fixed end of the fourth link. A height adjustment hole is formed at regular intervals with a pole, a screw hole corresponding to the height adjustment hole is formed in the backrest fixing bracket, and a height adjustment bolt fastened to the screw hole may be inserted into the height adjustment hole.

In the present invention configured as described above, as long as the user drives the cylinder unit, the chair-shaped backrest and the footrest are automatically unfolded at the same time and converted to the bed form, so that the operation is easy and the conversion to the bed form is made quickly. , since the position of the seat portion rises in the process of being converted to a bed form, there is an effect that the patient can be more easily moved to a bed located above the normal seat portion.

In addition, since the present invention is composed of a single cylinder unit compared to the prior art composed of a plurality of cylinder units, an effect of reducing manufacturing costs can be expected.

1 is a perspective view of a bed wheelchair for transferring a patient according to the present invention.
Figure 2 is an exploded perspective view of a bed wheelchair for transferring a patient according to the present invention.
3 is a perspective view of a link unit constituting the present invention.
Figure 4 is a side view of a bed wheelchair for transferring a patient according to the present invention.
5 and 6 are side views showing a process in which the bed wheelchair for patient transport according to the present invention is transformed into a bed shape.

The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments, taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in the present specification and claims are based on the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It must be interpreted with a corresponding meaning and concept.

In addition, the terms or words used in the specification and claims are used only to describe specific embodiments, and are not intended to limit the present invention.

For example, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as “comprises” or “comprising” or “having” are intended to designate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more It should be understood that this does not preclude the possibility of addition or existence of other features or numbers, steps, operations, components, parts, or combinations thereof.

In addition, when a part of a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where it is "directly on" another part, but also the case where there is another part in between. Conversely, when a part of a layer, film, region, plate, etc. is said to be "under" another part, this includes not only cases where it is "directly under" another part, but also a case where another part is in between.

In addition, terms including an ordinal number, such as "first", "second", etc. used herein may be used to describe various elements, but the elements are not limited by the terms, and the terms are It is used only for the purpose of distinguishing one component from another.

Hereinafter, in describing an embodiment of the present invention in detail with reference to the drawings, the same reference numerals are used for the same components, and only different parts are mainly described so as not to overlap as much as possible for clarity.

1 is a perspective view of a bed wheelchair for transferring a patient according to the present invention, FIG. 2 is an exploded perspective view of a bed wheelchair for transferring a patient according to the present invention, FIG. 3 is a perspective view of a link unit constituting the present invention, FIG. 4 is It is a side view of a bed wheelchair for transferring a patient according to the present invention, and FIGS. 5 and 6 are side views showing a process in which the bed wheelchair for transferring a patient according to the present invention is transformed into a bed form. In the side view, one wheel is removed for convenience.

As shown, the bed chair for patient transport of the present invention basically includes a base frame (A) having wheels on both sides, and a link unit 100 fixed to the base frame (A), and the link unit. The cylinder unit 200 for driving the 100 and the seat part 300, the backrest part 400, and the footrest part ( 500) consists of

The link unit 100 includes a seat lifting link unit 110 , a backrest pivot link unit 120 , and a footrest folding link unit 130 .

The seat elevating link unit 110 supports the seat unit 300 to be elevating.

And, the backrest rotation link unit 120 is connected to the rear of the seat elevating link unit 110 to rotate the backrest unit 400 while interlocking along the seat elevating link unit 110 .

The posture of the backrest 400 is converted to the bed mode while being rotated downwardly backward to be positioned on the same horizontal plane as the seat unit 300 through the driving of the seat elevating link unit 110 .

In addition, the footrest folding link unit 130 is connected to the front of the seat elevating link unit 110 to fold the footrest 500 while interlocking along the seat elevating link unit 110 .

The footrest part 500 is divided into a calf support 510 and a sole supporter 520 , and at the same time rotates upward in the front of the seat part 300 through the driving of the footrest folding link part 130 . As it unfolds, the posture changes to bed mode.

The seat elevating link unit 110 includes a pair of first frames 111 fixed to face both sides of the base frame (A).

The first frame 111 is a plate made of a steel material and is fixed to the upper portion of the base frame A in the front-rear direction.

A first link 112 is hinged to an upper inner surface of the first frame 111 . The first link 112 is inclined backward in the chair mode.

The lower end of the first link 112 is hinged to the upper portion of the first frame 111 so that the upper end protrudes above the first frame 111 . The first link 112 is preferably provided in plurality at regular intervals in the front-rear direction for load distribution.

A second frame 113 is hinged to an upper inner surface of the first link 112 . When the first link 112 is rotated, the second frame 113 moves in the front-rear direction while turning for a predetermined section around the lower end of the first link 112 .

A second link 114 is hinged to an upper inner surface of the second frame 113 . The second link 114 is inclined forward in the chair mode.

The lower end of the second link 114 is hinged to the upper portion of the second frame 113 so that the upper end protrudes above the second frame 113 . The second link 114 is preferably provided in plurality at regular intervals in the front and rear directions for load distribution.

A third frame 115 is hinged to an upper inner surface of the second link 114 . When the second link 114 is rotated, the third frame 115 moves forward and backward while rotating for a predetermined section around the lower end of the second link 114 .

In addition, the third frame 115 supports the seat portion 300 . The lower surface of the seat part 300 is supported in a horizontal state by the upper end of the third frame 115 . In this case, a seat fixing bracket 310 bolted to the third frame 115 may be installed on the bottom surface of the seat unit 300 .

In addition, a third link 116 is hinged to the front end of the third frame 115 . The third link 116 has an upper body 116a hinged at an upper end to the front end of the third frame 115 and a lower end hinged to the front end of the second frame 113, and the upper body 116a. ) and the lower body 116b extending from the upper body 116a while forming an obtuse angle.

The seat lifting link unit 110 includes a fourth frame 117 connecting the first frames 111 facing each other. Both ends of the fourth frame 117 are fixed to the first frame 111, respectively, and the rear end of the cylinder unit 200 is rotatably coupled to the center.

In addition, the seat lifting link unit 110 includes a fifth frame 118 connecting the lower body 116b of the third links 116 facing each other. Both ends of the fifth frame 118 are fixed to the lower body 116b, respectively, and the front end of the cylinder unit 200 is rotatably coupled to the center.

The cylinder unit 200 is configured to operate with the power of a rechargeable battery, and a power switch and chair mode of the cylinder unit 200 are provided on one side of the base frame so that a user can operate the cylinder unit 200 and A mode setting switch capable of switching to the bed mode is provided.

The configuration of the rechargeable battery, the power switch, and the mode setting switch can be easily configured by those skilled in the art according to the operating relationship described below, and thus the illustration and description thereof will be omitted.

The backrest pivot link unit 120 includes a fourth link 121 hinged to the rear end of the third frame 115 .

The fourth link 121 has a fixed end 121a to which the backrest 400 is fixed.

A fifth link 122 is hinged to the rear end of the fourth link 121 . The upper end of the fifth link 122 is hinged to the fourth link 121 .

In addition, a sixth link 123 hinged to the rear end of the second frame 113 is hinged to the fifth link 122 .

A seventh link 124 connecting the lower end of the fifth link 122 and the rear end of the first frame 111 is fixed to the lower end of the fifth link 122 .

In addition, a guide groove 111a is formed at the rear end of the first frame 111 to guide the end of the seventh link 124 that rotates along the fifth link 122 .

On the other hand, the backrest 400 may be configured to be adjustable in height through the backrest pivoting link unit 120 .

In this case, on the rear surface of the backrest 400, guide jaws surrounding both sides of the fixed end 121a of the fourth link 121 so as to be lifted along the fixed end 121a of the fourth link 121 ( The backrest fixing bracket 410 on which 411) is formed is fixed.

In addition, at the fixed end 121a of the fourth link 121, a height adjustment hole 121b is formed at regular intervals in the vertical direction.

In addition, the screw hole 412 corresponding to the height adjustment hole 121b is formed in the backrest fixing bracket 410 .

In addition, a height adjustment bolt 413 passing through the height adjustment hole 121b is fastened to the screw hole 412 .

Accordingly, when the user raises or lowers the backrest 400 according to the physique of the patient, the fixed end 121a of the fourth link 121 enters or withdraws the backrest fixing bracket 410 along the guide jaw 411. It is possible to position the backrest 400 at an appropriate height to fit the physique of the patient. When fastened with the screw hole 412, the height of the backrest 400 can be easily changed while the backrest 400 is firmly fixed to the fixing end 121a.

The footrest folding link unit 130 includes an eighth link 131 hinged to the front end of the third frame 115 .

In addition, a ninth link 132 that is folded while forming an X shape with the eighth link 131 is hinged to the lower end of the lower body 116b of the third link 116 .

In addition, a tenth link 133 having a fixed end 133a to which the calf rest 510 is fixed is hinged to an end of the ninth link 132 .

In addition, the eleventh link 134 hinged to the end of the eighth link 131 is hinged to the center of the tenth link 133 .

A twelfth link 135 is hinged to the center of the eleventh link 134 .

In addition, a thirteenth link 136 is hinged to an end of the twelfth link 135 . A tenth link 133 is hinged to the center of the thirteenth link 136 , and the sole support 520 is coupled to the front end thereof.

When the bed chair for transferring a patient of the present invention forms a chair, the tenth link 133 is positioned in an up-down direction and the thirteenth link 136 is positioned in a horizontal state.

The bed chair for transferring the patient of the present invention configured as described above is used in a chair mode in which a patient can normally sit, and when a patient needs to be laid down to move the patient to the bed, the cylinder unit 200 is operated to operate the bed mode. convert it to use

That is, when the user turns on the power switch provided in the cylinder unit 200 and operates the mode setting switch to set the bed mode, the link unit 100 is operated while the rod of the cylinder unit 200 is withdrawn from the cylinder, and the The seat portion 300, the backrest portion 400, and the footrest portion 500 are simultaneously interlocked and converted into a bed form.

The link unit 100 operates as follows.

As shown in FIG. 4 , when the rod of the cylinder unit 200 is withdrawn from the cylinder, the entire third link 116 along with the fifth frame 118 that is pushed forward by the rod of the cylinder unit 200 moves forward. , and in this process, the upper body 116a of the third link 116 hinged to the second frame 113 rotates backward.

As the upper body 116a advances, the second frame 113 is given a forward moving force while the third frame 115 is given a rearward moving force from the rearwardly rotating upper body 116a. As a result, while the first link 112 rotates forward, the second frame 113 moves backward while turning around the upper portion of the first frame 111, and the third frame 115 is moved backward while turning upward around the upper part of the second frame 113 .

As a result, the seat part 300 moves upward.

At the same time, the backrest 400 is rotated rearward along the fourth link 121 that is rotated downwardly to the rear by the third frame 115 moving backward to form the same plane as the seat unit 300 . unfolds horizontally.

That is, as the second frame 113 moves forward, the sixth link 123 moves the fifth link 122 forward, and the seventh link 124 is guided together with the fifth link 122 . Since it moves forward along the groove, the rear end of the fourth link 121 turns downwardly forward, and the front end of the fourth link 121 moves upward along the third frame 115 that rotates upwardly backward. Since it rotates, the backrest 400 is able to smoothly rotate backward.

At the same time, the footrest 500 is unfolded while rotating upward along the ninth link 132 that rotates upward.

That is, as the ninth link 132 upwardly rotates forward and the lower body 116b of the third link 116 rotates forward, the eighth link 131 to the thirteenth link 136 in a folded state. is given a rotational force from the lower body 116b and rotates forward in turn and unfolds in turn, and in this process, the calf support 510 installed on the fixed end 133a of the tenth link 133 is installed with the seat portion 300 and It spreads out in a horizontal state that forms the same plane.

Therefore, in the present invention, as long as the user drives the cylinder unit 200, the chair-shaped backrest 400 and the footrest 500 are automatically unfolded at the same time and converted to a bed form, so it is easy to operate and converts to a bed form. In addition to the rapid changeover, the position of the seat part 300 is raised, so that the patient can more easily move to the bed located above the seat part 300, and in this process, the patient interferes with the wheel is also prevented.

As such, although preferred embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains can modify without departing from the spirit of the present invention It is possible, and such modifications will fall within the scope of the present invention.

100...Link unit 110...Seat elevating link unit
111...First frame 111a...Guide groove
112...first link 113...second frame
114...Second link 115...Third frame
116...third link 116a...upper body
116b...Lower body 117...Fourth frame
118... 5th frame 120... Backrest pivoting link part
121...Fourth link 121a...Fixed end
121b...Height adjustment hole 122...5th link
123...6th link 124...7th link
130...Footrest folding link part 131...Eighth link
132...the 9th link 133...the 10th link
133a...Fixed end 134...Eleventh link
135...Link 12 136...Link 13
200...Cylinder unit 300...Seat part
310... Seat fixing bracket 400... Backrest
410...Backrest fixing bracket 411...Guide chin
412...screw hole 413...height adjustment bolt
500...footrest 510...calf rest
520...footrest A...baseframe

Claims (7)

a link unit fixed to a base frame having wheels on both sides;
a single cylinder unit for driving the link unit;
a seat portion receiving a lifting force by driving the link unit;
a backrest portion that rotates downwardly to the rear so as to be positioned on the same horizontal plane as the seat portion through driving of the link unit; and
A bed wheelchair for patient transport including a footrest that rotates upwardly and at the same time unfolds in front of the seat part through the driving of the link unit. The method of claim 1,
The link unit is
a seat elevating link unit for supporting the seat unit to be elevated;
a backrest rotation link unit connected to the rear of the seat elevating link unit to rotate the backrest unit while interlocking the seat elevating link unit; and
A bed wheelchair for transferring a patient having a footrest folding link part connected to the front of the seat lifting link part and folding the footrest part while interlocking along the seat lifting link part. 3. The method of claim 2,
The seat elevating link unit
a pair of first frames fixed to face both sides of the base frame;
a first link hinged to the upper portion of each first frame;
a second frame hinged to an upper portion of the first link;
a second link hinged to an upper portion of the second frame;
a third frame hinged to an upper portion of the second link and supporting the seat portion;
a third link having an upper body hinged to the front end of the third frame and the front end of the second frame, and a lower body extending from the lower end of the upper body;
a fourth frame connecting the first frames facing each other and rotatably coupled to the rear end of the cylinder unit in the center; and
Connecting the lower body of the third links facing each other, and having a fifth frame to which the front end of the cylinder unit is rotatably coupled to the center of the bed wheelchair for transferring the patient. 4. The method of claim 3,
The backrest pivoting link part
a fourth link having a fixed end to which the backrest is fixed and hinged to the rear end of the third frame;
a fifth link hinged to the rear end of the fourth link;
a sixth link having both ends hinged to the rear end of the fifth link and the second frame;
a seventh link connecting the lower end of the fifth link and the rear end of the first frame; and
A bed wheelchair for patient transport formed at the rear end of the first frame and provided with a guide groove for guiding the end of the seventh link turning along the fifth link. 4. The method of claim 3,
The footrest is divided into a calf support and a sole support;
The footrest folding link part
an eighth link hinged to the front end of the third frame;
a ninth link hinged to the lower end of the lower body of the third link to form an X shape with the eighth link;
a tenth link having a fixed end to which the calf rest is fixed, and hinged to an end of the ninth link;
an eleventh link having both ends hinged to the center of the tenth link and an end of the eighth link, respectively;
a twelfth link hinged to the center of the eleventh link; and
A bed wheelchair for patient transport having a thirteenth link hinged to the ends of the tenth link and the twelfth link, and to the end of which the footrest is hinged. 4. The method of claim 3,
A bed wheelchair for patient transport provided with a seat fixing bracket coupled to the third frame on the lower surface of the seat part. 5. The method of claim 4,
A backrest fixing bracket having guide jaws surrounding both sides of the fixed end of the fourth link is fixed to the rear surface of the backrest so as to be able to ascend and descend along the fixed end of the fourth link;
A height adjustment hole is formed at a fixed end of the fourth link at regular intervals up and down;
A screw hole corresponding to the height adjustment hole is formed in the backrest fixing bracket;
The height adjustment hole is fitted with a height adjustment bolt fastened to the screw hole for transferring the patient bed wheelchair.

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