KR101019488B1 - Apparatus for ascent and descent of bed and bed comprising the same - Google Patents

Abstract

PURPOSE: A bed ascent and descent device and a bed including the same are provided to minimize the size of a cylinder by ascending and descending a main frame of the bed. CONSTITUTION: A bed ascent and descent device(1) comprises a cylinder, a shaft, a belt(500), a main body, one or more rollers(400). The cylinder is composed of a cylinder main body and a rod. In the cylinder, a driving unit is installed. The rod moves to the top and bottom by the driving unit. The shaft moves to the top and bottom and is fixed to the outside of the main body. One end of the belt is fixed to the main frame(700) of the bed. The other end of the belt is fixed to prevent vertical movement.

Description

Bed lifting device and bed including the same {APPARATUS FOR ASCENT AND DESCENT OF BED AND BED COMPRISING THE SAME}

The present invention relates to a bed lifting device and a bed comprising the same.

In general, the medical bed has a structure that can be raised and lowered. At this time, for lifting the bed, one side of the main frame (main frame) of the bed is connected to the bed lifting device.

Such a bed elevating device includes a cylinder. In addition, the cylinder includes a rod capable of vertically moving by a motor, hydraulic pressure, or pneumatic method. The main frame can be moved up and down by moving the rod up and down.

However, in the conventional bed elevating device, the stroke length (or the rod stroke distance) of the cylinder and the elevating or descending distance of the main frame were the same. Therefore, the stroke length of the cylinder had to be secured by the maximum lifting height of the main frame preset.

For this reason, there exists a problem that the size of a cylinder or rod becomes large.

Accordingly, an object of the present invention is to provide a bed lifting device and a bed including the same can be minimized the size of the cylinder.

Other objects of the present invention will be readily understood through the following description of the embodiments.

Bed lifting device for achieving the above object is disclosed.

According to a preferred embodiment of the present invention, an apparatus for raising and lowering a bed, comprising: a cylinder including a cylinder body having a driving means installed therein and a rod moving up and down by the driving means; An axis installed to move up and down as the rod moves up and down; And a belt spanning the shaft, and one end of which is fixed to the main frame of the bed to move up and down with the main frame according to the vertical movement of the shaft, and the other end of which is fixed to prevent the vertical movement of the bed. Bed lifting device is characterized in that it comprises a).

Here, the cylinder is located therein, and further connected to the rod may further include a main body to move up and down by the vertical movement of the rod.

The inner surface of the main body forms a cylinder and the outer surface of the cylinder main body is formed in the same shape as the inner surface of the main body, and the inner surface of the main body may slide the outer surface of the cylinder main body when the main body moves up and down. have.

In addition, the axis may be fixed perpendicular to the longitudinal direction of the main body.

In addition, there are two axes, and the two axes may be symmetrical with respect to the main body.

The apparatus may further include at least one roller rotatably installed about the shaft, and the belt may be disposed on the roller.

In addition, the separation prevention groove is formed on the side of the roller, the belt may be over the separation prevention groove.

The apparatus may further include a “c” shaped lifting frame penetrated by the shaft, and the roller may be positioned between two opposite surfaces of the lifting frame.

In addition, at least one of the two opposing surfaces of the elevating frame may maintain a distance less than the thickness of the circumferential surface of the roller and the belt.

In addition, one side may further include an auxiliary shaft fixed to the outside of the main body and the other side opposite to the one side is fixed to the lifting frame.

In addition, the auxiliary shaft may be located at at least one of directly and directly below the axis.

The elevating frame may further include a vertical rail having a “c” shape, and the elevating frame may be guided by the vertical rail when the elevating frame is lifted, and the elevating frame may be positioned between two opposite surfaces of the vertical rail. Can be.

In addition, the vertical rail may further include a fixed frame fixed.

In addition, a bed including any one of the above bed lifting device is provided.

And, one side of the main frame of the bed may further include a guide plate which is fixed perpendicular to the main frame.

As described above, according to the bed elevating device and the bed including the same according to the present invention, according to the principle of the pulley, by lifting up and down the main frame of the bed by double the stroke distance of the cylinder, it is used when the bed There is an advantage that the cylinder can be made compact.

Figure 1 shows a front view of the bed lifting device according to an embodiment of the present invention.
FIG. 2 shows a side view of the bed elevating device in which the bed elevating device of FIG. 1 is installed on the wall and connected to the main frame of the bed.
FIG. 3 is a front view of the bed lifting device in a state where the rod included in the bed lifting device of FIG. 1 is moved by a stroke distance x.
FIG. 4 shows a side view of the bed elevating device installed on the wall and connected to the main frame of the bed.
Figure 5 shows a front view of the bed lifting device according to another embodiment of the present invention.
Figure 6 shows a front view of the bed lifting device according to another embodiment of the present invention.
7 is a view for explaining the structure of the shaft, lifting frame, vertical rail, fixed frame in FIG.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Like reference numerals are used for like elements in describing each drawing. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 and 2, a bed lifting apparatus according to a preferred embodiment of the present invention will be described.

Figure 1 shows a front view of the bed lifting device according to an embodiment of the present invention. FIG. 2 shows a side view of the bed elevating device in which the bed elevating device of FIG. 1 is installed on the wall and connected to the main frame of the bed.

In the following, “stroke distance of cylinder” and “stroke distance of rod” are used the same meaning.

The bed lifting device 1 may include a main body 100, a cylinder 200, a shaft 300, a roller 400, a belt 500. In FIG. 1 and FIG. 2 the bed elevating device 1 is in an “initial state”. That is, the stroke distance of the cylinder 200 is "0". As shown in FIG. 2, the bed elevating device 1 may be installed to be inserted into the space B formed in the wall A. In this case, the guide plate 900 may be installed so that the bed rises while keeping the base 600 level with the base frame 700 when the bed is moved up and down. One surface of the guide plate 900 may be in close contact with the wall, and a surface perpendicular to the surface of the guide plate 900 may be fixed to the main frame 700 of the bed. At this time, the main frame 700 and the guide plate 900 may be fixed to enable the rotational movement, so that the main frame of the bed at the time of lifting the bed may form an inclined surface. The guide plate 900 also serves to prevent a user from seeing the bed elevating device 1 which may cause visual discomfort.

The main body 100 may be a hollow one side or both sides open. The main body 100 is not limited as long as it is hollow, but for convenience of explanation, it is assumed below that both sides are hollow. The main body 100 may include a coupling part 110. The coupling part 110 may be formed integrally with the main body 100.

The cylinder 200 may include a cylinder body 210 and a rod 220. The cylinder 200 may be inserted into the main body 100. The cylinder 200 may be a motor, hydraulic or pneumatic type, and the present invention does not limit the type of the cylinder 200.

The cylinder body 210 may include a driving means for moving the rod 220 up and down, for example, a motor or a hydraulic chamber. Here, the hydraulic chamber means a space in which the rod 220 can be moved up and down by the pressure of the fluid contained therein when the cylinder is a hydraulic system. That is, the driving means may move the rod 220 up and down in a manner such as a motor, hydraulic pressure or pneumatic. The cylinder body 210 may be cylindrical. The outer circumferential surface of the cylinder body 210 may have the same radius as the radius of the inner circumferential surface of the main body 100 that the cylinder body 210 faces. The cylinder body 210 may have the same shape as the body 100. The cylinder body 210 may be formed in the same cylindrical shape as the inner surface of the main body 100 so that the inner surface of the main body 100 slides when the main body 100 moves up and down. Therefore, when the main body 100 moves up and down, the outer circumferential surface of the cylinder body 210 serves as a guide, and thus the main body 100 may move up and down without shaking. The cylinder body 210 may be fixed to the base 600. Here, the base 600 may be a separate device or frame for fixing the hospital floor or the cylinder body 210.

The rod 220 may have one side connected to a driving means (not shown) located inside the cylinder body 210, and the other side may be fixed to the coupling unit 110. There is no limitation on the fixing method of the rod 220 and the coupling portion 110, it may be by welding or the like. The rod 220 may move up and down by the driving means located inside the cylinder body 210. As the coupling part 110 is fixed to the rod 220, the main body 100 may move up and down by the stroke distance of the rod 220.

One end of the shaft 300 may be fixed to the main body 100. Two axes 300 may be fixed to the body 100 symmetrically with respect to the body 100. Unlike that shown in FIG. 1, the axis 300 may be one. The shaft 300 is preferably fixed in a state perpendicular to the longitudinal direction of the main body 100 so that the roller 400 does not shake when the roller 400 rotates. The shaft 300 may be manufactured separately from the main body 100 and fixed by welding. Alternatively, the shaft 300 may be integrally formed with the body 100. As described above, the main body 100 may move up and down by the stroke distance of the rod 220. Therefore, the shaft 300 fixed to the main body 100 can move up and down by the stroke distance of the rod. In FIG. 1, "F" represents the center line of the axis 300 in the initial state.

The roller 400 may be rotatably installed on one side of each of the two shafts 300. When there is only one shaft 300, at least one roller 400 may be rotatably installed on one shaft 300. At this time, in order to prevent the roller 400 from being separated from the shaft during rotation of the roller 400, it may be fixed by a screw (P). The roller 400 may include a departure prevention groove 410 on the outer surface. The roller 400 rotates when the shaft 300 moves up and down, thereby reducing the tension or friction force applied to the belt 500. In the case where the structure of the belt 500 is directly applied to the shaft 300, the belt 500 may be damaged because the sliding friction acting on the belt 300 when the shaft 300 moves up and down is very large. Therefore, the roller 400 is provided between the shaft 300 and the belt 500, and the roller 400 at the time of raising and lowering the shaft 300 changes the sliding friction to rotational friction, thereby raising and lowering the shaft 300. Damage to the belt 500 can be prevented. Here, the roller 400 is not necessarily to be located between the shaft 300 and the belt 500, of course, may be implemented in a form in which the belt 500 is directly caught on the shaft 300. Here, the present invention is not limited to the number of rollers 400, the rollers may be added or deleted as necessary.

Belt 500 may span roller 400. One side of the belt 500 may be fixed to the base 600, and the other side of the belt 500 may be fixed to the main frame 700 of the bed. One side of the belt 500 is fixed to the base 600 to move up and down, and the other side of the belt 500 is fixed to the main frame 700 to move up and down of the main frame 700 or up and down of the shaft 300. The vertical movement may be possible according to the movement. When the other side of the belt 500 is fixed to the main frame 700 of the bed, the weight of the main frame 700 is transmitted to the shaft 300. For easy fixing of the belt 500, the other side of the belt may be manufactured in a ring shape, and the ring 800 may be fixed to the main frame 700 of the bed, and then the ring may be fixed to the ring 800. In addition, the belt 500 may span the release preventing groove 410, whereby the belt 500 may not be separated from the roller 400 when the roller 400 rotates.

In the case of the bed lifting device 1 as described above, by the principle of the pulley, the main frame 700 of the bed moves up and down by twice the stroke distance of the rod 220 or the stroke distance of the cylinder 200. This is possible.

Unlike the above embodiment, the shaft 300 is one, it is fixed only on one side of the main body 100, it is possible to implement in the form of a plurality of belts 500 to the shaft 300. At this time, the roller 400 may be located between the shaft 300 and the belt 500.

Hereinafter, with reference to FIGS. 1 to 4, the operation of raising and lowering a bed by the principle of the pulley in the bed lifting device according to the preferred embodiment of the present invention will be described.

FIG. 3 is a front view of the bed lifting device in a state where the rod included in the bed lifting device of FIG. 1 is moved by a stroke distance x. FIG. 4 shows a side view of the bed elevating device installed on the wall and connected to the main frame of the bed.

The rod 220 included in the bed elevating device 1 may move upward by the stroke distance “X” by the user's manipulation. Thereby, the shaft 300 can move by the stroke distance "X" of the rod 220. As a result, when the stroke distance of the rod 220 is 'X', the belt 500 having a length corresponding to “2X” is further positioned above the center line “F” of the shaft 300 than the initial state. That is, when the stroke distance of the rod 220 is 'X', the length of the belt 500 located between the centerline “F” of the shaft 300 and the main frame 700 of the bed is “2X” compared to the initial state. Shortened. By this principle, the main frame 700 is raised by twice the stroke distance of the rod 220. In the case of the lowering of the main frame 700 of the bed is the reverse.

As described above, since the main frame 700 is raised or lowered by twice the stroke distance of the rod 220, it is not necessary to lengthen the stroke distance of the rod 220. That is, the cylinder 200 can be manufactured small. For example, if the maximum lift width of the bed was 50 cm, the stroke distance of the cylinder had to be secured 50 cm. However, in the bed lifting device of the present invention, when the maximum lift width of the bed is 50 cm, it is sufficient that the stroke distance of the cylinder is 25 cm.

Hereinafter, a bed lifting device according to another embodiment of the present invention will be described with reference to FIG. 5.

Figure 5 shows a front view of the bed lifting device according to another embodiment of the present invention. In FIG. 5, the same reference numerals are given to components that perform the same functions as those of FIG. 1.

The bed lifting device 2 of FIG. 5 has the difference that the shaft 300 is directly connected to the rod 220 when compared to FIG. 1. At this time, since the main body 100 is removed, manufacturing is easy and manufacturing cost is low. However, in comparison with the case in which the main body 100 is applied, when the bed is large, the shaking of the rod 220 may be large when the rod 220 moves up and down. Thus, the bed elevating device of FIG. 5 may be suitable for a small bed.

Hereinafter, a bed lifting device according to another embodiment of the present invention will be described with reference to FIGS. 6 and 7.

Figure 6 shows a front view of the bed lifting device according to another embodiment of the present invention. 7 is a view for explaining the structure of the shaft, lifting frame, vertical rail, fixed frame in FIG. In FIG. 6 and FIG. 7, the same reference numerals are given to the same components as in FIG. 1.

Bed lifting device 3 according to another embodiment of the present invention is a lifting frame 1100, vertical rail 1200, fixed frame 1300, auxiliary shaft 300a compared to the bed lifting device of FIG. It may further include.

The elevating frame 1100 may be a frame having a “c” shape. The lifting frame 1100 may be installed perpendicular to the top surface of the base 600. The lifting frame 1100 may have a through hole 1110 formed on a surface of the lifting frame 1100 that faces the main body 100. The shaft 300 may pass through the through hole 1110. As a result, the roller 400 may be positioned between two surfaces facing each other in the lifting frame 1100. Then, the distance between the circumferential surface of the roller 400 and the elevating frame 1100 is less than the thickness of the belt 500, so that the belt 500 is released from the roller 400 when the roller 400 rotates. Can be prevented. Unlike FIG. 7, the upper portion of the elevating frame 1100 may include a cover without being opened. And, by making the distance between the cover and the circumferential surface of the roller 400 smaller than the thickness of the belt 500, the belt 500 can be prevented from being separated from the roller 400 during the rotation of the roller 400. have.

The vertical rail 1200 may be a frame of a "c" shape. The vertical rail 1200 may be fixed perpendicular to the base 600. The lifting frame 1100 may be positioned between two surfaces of the vertical rail 1200 that face each other. The lifting frame 1100 can move up and down by the lifting and lowering of the main body 100. In this case, the vertical rail 1200 may guide the lifting frame 1100 to move the lifting frame 1100 upward or downward. At this time, all of the load of the elevating frame 1100 to the shaft 300 can be transmitted. As a result, the shaft 300 may be bent. The auxiliary shaft 300a is fixed to the outside of the main body 100 and may be located on at least one of the upper, lower and side portions of the shaft 300 from the outside of the main body 100. In addition, the auxiliary shaft 300a may pass through a separate through hole 1110 provided in the elevating frame 1100. However, as long as the auxiliary shaft 300a is configured to receive the load of the elevating frame 1100, the auxiliary shaft 300a and the elevating frame 1100 may have various structures, for example, the auxiliary shaft 300a. It can be bound in a structure welded to the lifting frame 1100. The auxiliary shaft 300a may receive a load of the elevating frame 1100 and the shaft 300 when the elevating frame 1100 is elevated. As a result, the shaft 300 may be prevented from being bent by the load of the elevating frame 1100 described above. Here, the auxiliary shaft 300a may be located directly above and / or directly below the shaft 300. As a result, it is possible to prevent distortion of the elevating frame 1100 during the elevating of the elevating frame 1100. Unlike in FIG. 6, the auxiliary shaft 300a may be installed in various positions at various positions. For example, the auxiliary shaft 300a may be installed in an equilateral triangle arrangement centering on the shaft 300.

The fixed frame 1300 may be fixed perpendicularly to the base 600. In addition, two sidewalls of the fixing frame 1300 may be connected to each other, and thus may be more stably fixed on the base 600. That is, the fixed frame 1300 may be installed in a shape surrounding the outermost of the bed lifting device (3). The vertical rail 1200 may be fixed to the fixed frame 1300. Thereby, the fixed rail 1200 can guide the lifting frame 1100 more stably. Unlike that shown in FIG. 6, at least one of the auxiliary shaft 300a, the vertical rail 1200, and the fixed frame 1300 may be implemented in a deleted form.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

1: bed lifting device
100: main body 110: coupling portion
200: cylinder 210: cylinder body
220: load
300: axis 300a: auxiliary axis
400: roller 410: separation prevention groove
500: belt 600: base
700: bed main frame 800: hook
900: guide plate
A: Wall B: Space formed on the wall
F: Center line of the axis in the initial state P: Screw
1100: lifting frame 1110: through hole
1200: vertical rail 1300: fixed frame

Claims (14)

In the device for lowering the bed,
A cylinder including a cylinder body having a driving means installed therein and a rod moving up and down by the driving means;
An axis installed to move up and down as the rod moves up and down; And
One end is fixed to the main frame (bed) of the bed and can move up and down with the main frame in accordance with the vertical movement of the axis, the other end includes a belt (belt) is fixed so that the vertical movement is impossible,
The cylinder is located therein, further includes a main body connected to the rod and moved up and down by the vertical movement of the rod,
The shaft is fixed to the outside of the body,
At least one roller rotatably installed on the shaft,
The belt is hung on the roller,
It further comprises a lifting frame of the "c" shaped like penetrated by the axis,
And the roller is positioned between two opposite surfaces of the elevating frame.
delete The method of claim 1,
An inner surface of the main body forms a cylinder, and the outer surface of the cylinder body forms a cylinder having the same radius as the cylinder formed on the inner surface of the main body.
The method of claim 1,
The axis is
Bed lifting device, characterized in that is fixed perpendicular to the longitudinal direction of the main body.
The method of claim 1,
The shaft is two, the bed lifting device, characterized in that the two axes are installed symmetrically with respect to the body relative to each other.
delete The method of claim 1,
A separation prevention groove is formed on the side of the roller, the roller is a bed lifting device, characterized in that over the separation prevention groove.
delete The method of claim 1,
At least one of the two opposing surfaces of the elevating frame, the bed lifting device, characterized in that to maintain a distance smaller than the thickness of the circumferential surface of the roller and the belt.
The method of claim 1,
One side is fixed to the outside of the main body and the other side opposite to the one side further comprises a secondary shaft fixed to the elevating frame.
The method of claim 10,
The auxiliary shaft is a bed lifting device, characterized in that located on at least one of directly above and below the shaft.
The method of claim 1,
It further includes a vertical rail of the "c" shape,
And the elevating frame is positioned between two opposite surfaces of the vertical rail so that the elevating frame is guided by the vertical rail when the elevating frame is raised or lowered.
The method of claim 12,
Bed lifting device further comprises a fixed frame to which the vertical rail is fixed.
The method according to any one of claims 1, 3 to 5, 7 and 9 to 13,
A bed comprising the bed lifting device.

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