WO2013069952A1

WO2013069952A1 - Separation type bed

Info

Publication number: WO2013069952A1
Application number: PCT/KR2012/009311
Authority: WO
Inventors: Seok Joo Chang; Won Sik Youn; Dong Soo Jeong; Byung Su SHIN; Woo Yeul Kim; Jong Tae Kim
Original assignee: Jw Medical Corporation
Priority date: 2011-11-09
Filing date: 2012-11-07
Publication date: 2013-05-16
Also published as: KR101332637B1; KR20130051200A

Abstract

Disclosed herein is a separation type bed in which a plurality of separable bed parts is provided so as to be simply attached to and detached from each other and which is used for medical purposes to perform an operation or treatment of a patient in a hospital. The separation type bed includes a first bed part on which a user lies or sits, a second bed part detachably coupled with one side of the first bed part, and first coupling devices to detachably couple the second bed part with the first bed part, and, in each of the first coupling devices, a first shaft extending from the second bed part is coupled with the first bed part by inserting the first shaft into the first bed part, and is separated from the first bed part by manipulation of a first lever provided on the first bed part.

Description

SEPARATION TYPE BED

The present invention relates to a bed, and more particularly to a separation type bed in which a plurality of separable bed parts is provided so as to be simply attached to and detached from each other and which is used for medical purposes to perform an operation or treatment of a patient in a hospital.

Beds are widely used to allow persons to lie thereon for relaxing, medical or cosmetic purposes. From among beds, various kinds of medical beds exist, and various kinds of operating tables on which patients lie during operation are suggested according to diseased parts of patients. Recently, an apparatus which automatically raises/lowers an operating table or automatically lifting the upper body or legs of a patient using electromotive technology is introduced.

An upper plate of the operating table consists of a plurality of bed parts. From among the plural bed parts, the central bed part is connected to a support column of the operating table, and the respective bed parts are separably coupled with each other through interfaces. Here, the bed parts supporting the head and legs of the patient may be attached to and detached from the central bed part, and be coupled with the central bed part such that the connection angle between the bed parts supporting the head and legs of the patient and the central bed part may be adjusted.

Such a conventional patient bed for operating tables having the above technical configuration is disclosed in Korean Patent Laid-open Publication No. 2007-0051739 (hereinafter, referred to as “Cited Reference”).

The patient bed for operating tables disclosed in Cited Reference is advantageous in that bed parts are coupled with each other using hooks so as to be easily coupled with each other. However, the patient bed for operating tables has a structure of locating one bed part on coupling elements of another bed part using the hooks, the bed may be easily disassembled when the bed is lifted, and thus, if the bed on which a patient lies is lifted by mistake, the bed may be disassembled and cause patient’s inconvenience.

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a separation type bed which prevents unintended separation and is separated by a simple operation.

It is another object of the present invention to provide a separation type bed which is conveniently used for medical purposes without patient’s inconvenience when a patient is operated or treated in a hospital.

In accordance with an aspect of the present invention, the above and other objects can be accomplished by the provision of a separation type bed including a first bed part on which a user lies or sits, a second bed part detachably coupled with one side of the first bed part, and first coupling devices to detachably couple the second bed part with the first bed part, wherein, in each of the first coupling devices, a first shaft extending from the second bed part is coupled with the first bed part by inserting the first shaft into the first bed part, and is separated from the first bed part by manipulation of a first lever provided on the first bed part.

First coupling parts with which the first shafts of the first coupling devices are detachably coupled may be formed at the side of the first bed part, a first shaft insertion hole into which the first shaft is separably inserted may be formed on each of the first coupling parts, and a latching groove may be formed on the side surface of the first shaft.

Each of the first coupling devices may include a second shaft sliding perpendicular to the first shaft insertion hole within the first coupling part and provided with one end inserted into the latching groove to lock the first shaft, a first lever coupled with the second shaft and forcibly separating the second shaft inserted into the latching groove from the latching groove, a third shaft installed on the first coupling part and locking the second shaft so as to prevent the end of the second shaft from protruding to the inside of the first shaft insertion hole, and a pushing unit configured to be pushed together with the third shaft by the first shaft and releasing locking of the second shaft, when the first shaft is inserted into the first coupling part.

The second shaft may include a lever coupling part provided with one end with which the first lever is coupled and a first locking part extending from the other end of the lever coupling part and having a greater cross-sectional area than the lever coupling part, and a locking projection inserted into the latching groove of the first shaft or separated from the latching groove and a fixing protrusion to which one end of the third shaft is fixed to prevent the locking projection from protruding to the inside of the first shaft insertion hole may be formed at one end of the first locking part.

A first elastic member elastically supporting the first locking part may be provided on the outer surface of the lever coupling part, and when locking of the second shaft is released through separation of the third shaft, the locking projection may protrude to the inside of the first shaft insertion hole by elastic force of the first elastic member.

The third shaft may include a pushing unit coupling part provided with the outer end slidably inserted into the pushing unit, and a second locking part extending from the pushing unit coupling part, having a greater cross-sectional area than the pushing unit coupling part, and provided with the end fixed to the fixing protrusion of the second shaft to lock the second shaft.

A second elastic member elastically supporting the second locking part may be provided on the outer surface of the pushing unit coupling part, and when force applied to push the pushing unit is released, the second locking part may be returned to an original state thereof by elastic force of the second elastic member so as to lock the second shaft.

The pushing unit may be located at one end opposite to the entrance of the first shaft insertion hole into which the first shaft is inserted, from among both ends of the first shaft insertion hole, and may thus be pushed by the first shaft when the first shaft is inserted into the first shaft insertion hole and moves forward, and be returned to an original state thereof when the first shaft moves backward.

The pushing unit may include a support plate located at a position separated from the other end of the first shaft insertion hole, a support rod extending from the front surface of the support plate toward the other end of the first shaft insertion hole, a pushing plate provided with one end, into which one end of the support rod is slidably inserted, and the other end, into which the outer end of the third shaft is slidably inserted, a pushing projection which extends from the front surface of one end of the pushing plate, into which the support rod is inserted, and which is inserted into or separated from the first shaft insertion hole, and a third elastic member provided on the outer surface of the support rod between the pushing plate and the support plate and elastically supporting the pushing plate.

The separation type bed may further include second coupling devices to detachably couple third bed parts with the other side of the first bed part.

Second coupling parts to couple the third bed parts with the first bed part may be formed at the other side of the first bed part, and a coupling hole opened in the upward direction and a locking groove opened in the sideward direction may be formed on each of the second coupling parts.

Each of the second coupling devices may include an insertion part formed vertically on each of the third bed parts and separably inserted into the coupling hole of each of the second coupling parts, a third locking part locking the insertion part so as not to be separated from the coupling hole, and a second lever forcibly releasing locking of the third locking part.

The third locking part may include a latch rotatably coupled with each of the third bed parts and provided with a locking projection protruding from the lower portion thereof and inserted into the locking groove of each of the second coupling parts, a fourth elastic member elastically supporting the latch to push the locking projection toward each of the second coupling parts, and a bracket provided with one end connected to the latch and the other end contacting the second lever.

The separation type bed may further include a plurality of ascending and descending covers surrounding a support column supporting the first bed part such that the first bed part may raise and lower.

Each of the plurality of ascending and descending covers may include a pair of cover plates detachably coupled with each other, and coupling parts coupling both ends of the cover plates with each other.

The coupling parts may include first coupling plates formed at the insides of both ends of one of the pair of cover plates, and second coupling plates formed at the insides of both ends of the other one of the pair of cover plates and coupled with the first coupling plates.

The first and second coupling plates may be formed by bending both ends of the respective cover plates inward.

Sideward openings opened in the sideward direction may be formed at the ends of the first coupling plate, upward openings opened to the insides of the sideward openings may be formed under the respective sideward openings, and coupling clips which pass through the sideward openings and are then inserted into the upward openings may be formed at the ends of the second coupling plates.

The separation type bed may further include angle adjustment devices to adjust the angle of the second bed part.

One end of the first shaft may be separably inserted into the first bed part, and the other end of the first shaft may be rotatably coupled with one side of the second bed part.

Each of the angle adjustment devices may include a saw-toothed part including a plurality of saw teeth separated from each other and formed at the other end of the first shaft, and an angle adjustment lever slidably coupled with the second bed part and provided with one end selectively inserted into a space between the saw teeth of the saw-toothed part to adjust the rotating angle of the second bed part

The angle adjustment lever may include a handle configured so as to be pulled toward the other side of the second bed part, a connection rod, one end of which is coupled with the handle, an insertion rod coupled with the other end of the connection rod and provided with one end inserted into the space between the saw teeth of the saw-toothed part, and a fifth elastic member provided on the outer surface of the insertion rod to move the insertion rod toward the saw-toothed part.

The separation type bed may further include a remote controller to adjust raising and lowering and the inclination of the first bed part.

The remote controller may be used both by wire and wirelessly.

A separation type bed in accordance with one embodiment of the present invention prevents unintended separation so as to be safely used and is separated by a simple operation so as to be conveniently used. The separation type bed is conveniently used as well as provides convenience to a patient and medical staff when the separation type bed is used for medical purposes, such as operation or treatment of the patient in a hospital.

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view of a separation type bed in accordance with one embodiment of the present invention;

FIG. 2 is an exploded perspective view illustrating separation of a second bed part shown in FIG. 1 from a first bed part;

FIG. 3 is a front view illustrating coupling of the second bed part with the first bed part;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a perspective view of FIG. 4;

FIGs. 6(a) and 6(b) are cross-sectional views illustrating insertion of a first shaft into a first coupling part;

FIG. 7 is a perspective view of FIG. 6(a);

FIG. 8 is a view illustrating pulling of first levers in the outward direction to separate the second bed part from the first bed part;

FIGs. 9(a) and 9(b) are cross-sectional views illustrating relations between the first shaft and the first coupling part in the state of FIG. 8;

FIGs. 10(a) to 10(c) are cross-sectional views illustrating an angle adjustment structure of the second bed part;

FIG. 11 is an exploded perspective view illustrating separation of third bed parts shown in FIG. 1 from the first bed part;

FIG. 12 is a plan view illustrating coupling of the third bed parts with the first bed part;

FIG. 13 is a cross-sectional view taken along line B-B of FIG. 12;

FIG. 14 is a cross-sectional view illustrating operation of second levers to separate the third bed parts from the first bed part;

FIG. 15 is a cross-sectional view illustrating separation of the third bed parts from the first bed part;

FIG. 16 is a perspective view illustrating a plurality of ascending and descending covers shown in FIG. 1;

FIG. 17 is an exploded perspective view illustrating a state in which two cover plates of the ascending and descending cover are separated;

FIG. 18 is a perspective view illustrating a process of coupling the two cover plates of the ascending and descending cover;

FIG. 19 is a perspective view illustrating a state in which the two cover plates of the ascending and descending cover are coupled;

FIG. 20 is a cross-sectional view illustrating connection between two ascending and descending covers; and

FIG. 21 is a plan view illustrating a remote controller shown in FIG. 1.

Now, a separation type bed in accordance with a preferred embodiment in accordance with the present invention will be described in detail with reference to the annexed drawings.

FIG. 1 is a perspective view of a separation type bed in accordance with one embodiment of the present invention.

A separation type bed 1 in accordance with the embodiment of the present invention includes a base part 2, a support part 3 and an upper plate 4.

The base part 2 contacts the ground, and stably supports the support part 3 and the upper plate 4 installed thereon. Wheel-type casters (not shown) rotatable at an angle of 360˚ may be installed on the lower surface of the base part 2, and a plurality of brake cylinders (not shown) raised and lowered by channel hydraulic pressure corresponding to the respective casters may be provided.

The support part 3 stands upright on the upper surface of the base part 2 and supports the upper plate 4 at a designated height from the base part 2. Such a support part 3 may be formed in a structure of simply supporting the upper plate 4, or may be formed in a structure of raising and lowering the upper plate 4 to a desired height.

The support part 3 includes a support column (not shown) standing upright on the upper surface of the base part 2, an ascent and descent driving device (not shown) vertically movably installed on the support column to raise and lower the upper plate 4, a leftward and rightward rotation driving device (not shown) and a forward and backward rotation driving device (not shown) to adjust the slope of the upper plate 4, a forward and backward driving device (not shown) to move the upper plate 4 forward and backward, and ascending and descending covers 100 surrounding the support column and the ascent and descent driving device.

The upper plate 4 is horizontally installed on the support pate 3 so that a user may lie on the upper plate 4. The upper plate 4 is raised and lowered by the ascent and descent driving device of the support part 3, the angle of the upper plate 4 is adjusted by the leftward and rightward rotation driving device and the forward and backward rotation driving device (not shown), and the upper plate 4 includes a first bed part 200 moved forward and backward by the forward and backward driving device, and a second bed part 300 and third bed parts 400 detachably installed at both sides of the first bed part 200. The second bed part 300 supports the user’s head, and the third bed parts 400 support the user’s legs. Here, the first bed part 200 includes two bed members, one of the two bed members is installed on the support part 3, and the other of the two bed members is coupled with one side of the bed member installed on the support part 3 such that an angle between the two bed members may be adjusted.

FIG. 2 is an exploded perspective view illustrating separation of the second bed part shown in FIG. 1 from the first bed part, and FIG. 3 is a front view illustrating coupling of the second bed part with the first bed part.

First shafts 310 separably inserted into one side of the first bed part 200 are respectively extended from left and right regions of one side of the second bed part 300. First levers 520, which will be described later, operated by the user to separate the first shafts 310 from the first bed part 200 are provided at the lower portion of one side of the first bed part 200.

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3, and FIG. 5 is a perspective view of FIG. 4.

First coupling parts 210 into which the first shafts 310 are separably inserted are provided at one side of the first bed part 200. A first shaft insertion hole 211 into which the first shaft 310 is separably inserted is formed on the first coupling part 210. A second shaft insertion hole 212 in which a second shaft 510 which will be described later slides is formed on the first coupling part 210 perpendicularly to the first shaft insertion hole 211. One end of the second shaft insertion hole 212 communicates with the first shaft insertion hole 211. A third shaft insertion hole 213 in which a third shaft 530 which will be described later slides is formed on the first coupling part 210 at a position adjacent to the first shaft insertion hole 211. The third shaft insertion hole 213 is formed perpendicularly to the second shaft insertion hole 212, and one end of the third shaft insertion hole 213 communicates with the second shaft insertion hole 212.

A latching groove 311 to which one end of the second shaft 510 is fixed to prevent the first shaft 310 from escaping from the first shaft insertion hole 211 is formed on the side part of the first shaft 310. One end of the first shaft 310 is tapered so as to be easily inserted into the first shaft insertion hole 211 while pushing the end of the second shaft 510 when the first shaft 310 is inserted into the first shaft insertion hole 211.

A first coupling device 500 to couple the first shaft 310 with the first coupling part 210 or to separate the first shaft 310 from the first coupling part 210 is provided within the first coupling part 210. In the first coupling device 500, the first shaft 310 is coupled with the first coupling part 210 by inserting the first shaft 310 into the first coupling part 210, and is separated from the first coupling part 210 by pulling each of the first levers 520 provided at left and right regions of one side of the first bed part 200 in the leftward or rightward direction.

The first coupling device 500 includes the second shaft 510, the first lever 520, the third shaft 530 and a pushing unit 540.

The second shaft 510 is slidably installed in the second shaft insertion hole 212, and one end of the second shaft 510 is inserted into or separated from the latching groove 311 of the first shaft 310 to lock the first shaft 310 or to release the locking state of the first shaft 310. Such a second shaft 510 includes a lever coupling part 511 having the shape of a cylindrical rod and provided with one end with which the first lever is coupled, and a locking part 512 having the shape of a cylindrical rod extending from the other end of the lever coupling part 511 and having a greater diameter than the lever coupling part 511. A rise is formed between the lever coupling part 511 and the locking part 512 due to such a diameter difference. The second shaft insertion hole 212 includes a circular coupling part penetration hole 212a through which the lever coupling part 511 passes, and a locking part penetration hole 212b which extends from the coupling part penetration hole 212a and in which the locking part 512 slides. A spring 550 is provided on the outer surface of the lever coupling part 511 within the locking part penetration hole 212b, and the second shaft 212 is elastically supported by the spring 550 within the locking part penetration hole 212b.

A locking projection 512a inserted into the latching groove 311 of the first shaft 310 or separated from the latching groove 311 to lock the first shaft 310 or to release the locking state of the first shaft 310 is formed on the end of the locking part 512. One side surface of the locking projection 512a is an inclined surface such that the locking projection 512a is pushed by the first shaft 310 inserted into the first shaft insertion hole 211 so as to cause the second shaft 510 to be inserted into the second shaft insertion hole 212. Since the second shaft 510 is inserted into the second shaft insertion hole 212 when the first shaft 310 is inserted into the first shaft insertion 211 in this way, the first shaft 310 may be completely inserted into the end of the first shaft insertion hole 211. The other side surface of the locking projection 512a is a vertical surface such that the inner wall of the latching groove 311 is fixed to the vertical surface so as to lock the first shaft 310 with the first shaft insertion hole 211 when the locking projection 512a is inserted into the latching groove 311 of the first shaft 310.

A fixing protrusion 512b having a stepped structure to which one end of the third shaft 530 is fixed to prevent the locking part 512 of the second shaft 510 from protruding to the inside of the first shaft insertion hole 211 is formed at a position of the side surface of the locking part 512 opposite to the inclined surface of the locking projection 512a.

The first lever 520 is coupled with one end of the lever coupling part 511 of the second shaft 510. The second shaft 510 moves backward by manipulation of the first lever 520. That is, when each of the first levers 520 located at left and right regions of one side surface of the first bed part 200 is pulled in the leftward or rightward direction, the locking projection 512a of the second shaft 510 protruding to the inside of the first shaft insertion hole 211 retreats to the inside of the second shaft insertion hole 212. Therefore, the first shaft 310 may be separated from the first shaft insertion hole 211.

The third shaft 530 slides within the third shaft insertion hole 213 and one end of the third shaft 539 is fixed to the fixing protrusion 512b of the second shaft 50, thereby locking the second shaft 510 so that the locking projection 512a of the second shaft 510 does not protrude to the inside of the first shaft insertion hole 211. The third shaft 530 includes a pushing unit coupling part 531 having the shape of a cylindrical rod and provided with the outer end slidably inserted into the pushing unit 540, and a locking part 532 having the shape of a cylindrical rod extending from the pushing unit coupling part 531 and provided with the end fixed to the fixing protrusion 521b of the second shaft 510 to lock the second shaft 510. Since the diameter of the locking part 532 is greater than the diameter of the pushing unit connection part 531, a rise is formed between the locking part 532 and the pushing unit coupling part 531.

The third shaft insertion hole 213 includes a coupling part penetration hole 213a through which the pushing unit coupling part 531 slidably passes, and a locking part penetration hole 312b which extends from the coupling part penetration hole 213a and in which the locking part 532 slides. A spring 560 is provided on the outer surface of the pushing unit coupling part 531 within the locking part penetration hole 213b, and the third shaft 530 is elastically supported by the spring 560 within the locking part penetration hole 213b.

The pushing unit 540 is located at one end opposite to the entrance of the first shaft insertion hole 211 into which the first shaft 310 is inserted, from among both ends of the first shaft insertion hole 211. The pushing unit 540 is pushed by the first shaft 310 when the first shaft 310 is inserted into the first shaft insertion hole 211 and moves forward, and is returned to an original state thereof when the first shaft 310 moves backward. Since the third shaft 530 is pushed together during a process of pushing the pushing unit 540, locking of the second shaft 510 is released, and the locking projection 512a of the second shaft 510 moves forward and is inserted into the latching groove 311 of the first shaft 310. When the first lever 520 is pulled in the leftward or rightward direction of one side surface of the first bed part 200, the second shaft 510 moves backward, and thus locking of the first shaft 310 is released. Then, when the first shaft 310 is separated from the first shaft insertion hole 211, the pushing unit 540 is returned to an original state thereof.

The pushing unit 540 includes a support plate 541 located at a position separated from the other end of the first shaft insertion hole 211, a support rod 542 extending from the front surface of the support plate 541 toward the other end of the first shaft insertion hole 211, a pushing plate 543 provided with one end, into which one end of the support rod 542 is slidably inserted, and the other end, into which the outer end of the pushing unit coupling part 531 of the third shaft 530 is slidably inserted, and a pushing projection 544 which extends from the front surface of one end of the pushing plate 543, into which the support rod 542 is inserted, and which is inserted into the first shaft insertion hole 211. A spring 545 is provided on the outer surface of the support rod 542 between the pushing plate 543 and the support plate 541, and thus the pushing plate 543 is elastically supported by the spring 545.

FIGs. 6(a) and 6(b) are cross-sectional views illustrating insertion of the first shaft into the first coupling part, and FIG. 7 is a perspective view of FIG. 6(a).

Before the first shaft 310 is inserted into the first shaft insertion hole 211, the second shaft 510 moves backward through manipulation of the first lever 520 and maintains the locking state thereof by means of the third shaft 530. Here, the spring 550 elastically supporting the second shaft 510 maintains a compressed state thereof.

When the first shaft 310 is inserted into the first shaft insertion hole 211 and pushes the pushing projection 544 of the pushing unit 549, the pushing plate 543 formed integrally with the pushing projection 544 is pushed, the third shaft 530 moves backward, and locking of the second shaft 510 is released. Therefore, the second shaft 510 moves forward by elastic force of the spring 550, and the locking projection 512a formed at the end of the second shaft 510 is inserted into the latching groove 311 of the first shaft 310, thus locking the first shaft 310 under the condition that the first shaft 310 is inserted into the first shaft insertion hole 211.

FIG. 8 is a view illustrating pulling of the first levers in the outward direction to separate the second bed part from the first bed part, and FIGs. 9(a) and 9(b) are cross-sectional views illustrating relations between the first shaft and the first coupling part in the state of FIG. 8.

As shown in FIG. 8, when each of the first levers 520 is pulled in the outward direction of the first bed part 200, i.e., in the leftward or rightward direction of one side of the first bed part 200, the second shaft 510 forcibly retreats, the third shaft 530 is returned to an original state thereof by elastic force of the spring 560, locks the second shaft 510 and then maintains the locking state of the second shaft 510, as shown in FIG. 6(a), thereby releasing locking of the first shaft 310. Thereafter, when a user separates the first shaft 310 from the first shaft insertion hole 211 by holding the second bed part 300, as shown in FIG. 6(b), the pushing unit 540 is returned to an original state thereof by elastic force of the spring 545.

FIGs. 10(a) to 10(c) are cross-sectional views illustrating an angle adjustment structure of the second bed part.

A saw-toothed part 312 is formed at the other end of each of the first shafts 310 rotatably coupled with the left and right regions of the second bed part 300. The saw-toothed part 312 includes a plurality of saw teeth separated by designated intervals.

Angle adjustment levers 320, each of which is selectively inserted into a space between the saw teeth of the saw-toothed part 312 to adjust the rotating angle of the second bed part 300, are provided at both sides of the second bed part 300.

The angle adjustment lever 320 includes a handle 321 configured so as to be pulled toward the other side of the second bed part 300, a connection rod 322, one end of which is coupled with the handle 321, an insertion rod 323 coupled with the other end of the connection rod 322 and provided with one end inserted into the space between the saw teeth of the saw-toothed part 312, and a spring 324 provided on the outer surface of the insertion rod 323 to move the insertion rod 323 toward the saw-toothed part 312.

By causing a user to pull the handle 321 of the above-described angle adjustment lever 320 toward the other side of the second bed part 300, as shown in FIG. 10(b), the end of the insertion rod 323 is separated from the space between the saw teeth of the saw-toothed part 312. When the insertion rod 323 is separated from the space between the saw teeth of the saw-toothed part 312, the user adjusts the angle of the second bed part 300 by holding the second bed part 300. Here, the spring 324 is compressed. After the user releases force applied to the handle 321 after adjustment of the angle of the second bed part 300, the insertion rod 323 moves forward by restoring force of the spring 324 and is inserted into a space between saw teeth of the saw-toothed part 312, as shown in FIG. 10(c), thereby fixing the second bed part 300.

In this way, the user adjusts the angle of the second bed part 300 while holding the handles 321 of the angle adjustment levers 320 located at the left and right regions of the second bed part 300 with both hands. However, the present invention is not limited thereto, the angle of the second bed part 300 may be adjusted by connecting the two angle adjustment levers 320 using a connection bar (not shown) and then pulling the connection bar toward the other side of the second bed part 300.

FIG. 11 is an exploded perspective view illustrating the third bed parts shown in FIG. 1 from the first bed part, and FIG. 12 is a plan view illustrating coupling of the third bed parts with the first bed part.

The third bed parts 400 are configured such that user’s legs may be placed on the third bed parts 400. Two third bed parts 400 are detachably coupled with the other side of the second bed part 300. The third bed parts 400 may be separated from the first bed part 200 by rotating second levers 630, which will be described later, provided on the third bed parts 400 upward.

FIG. 13 is a cross-sectional view taken along line B-B of FIG. 12.

Second coupling devices 600 detachably coupling the third bed parts 400 with the other side of the first bed part 200 are provided on the third bed parts 400.

Second coupling parts 220 coupling the third bed parts 400 with the first bed part 200 are formed at left and right regions of the other side of the first bed part 200. A coupling hole 221 opened in the upward direction and a locking groove 222 opened in the sideward direction are formed on the second coupling part 220.

The second coupling device 600 includes an insertion part 610, a locking part 620 and the second lever 630 provided on the third bed part 400.

The insertion part 610 is vertically formed on the third bed part 400, and is separably inserted into the coupling hole 221 of the second coupling part 220.

The locking part 620 includes a latch 621 rotatably coupled with the third bed part 400 and provided with a locking projection 621a protruding from the lower portion thereof and inserted into the locking groove 222 of the second coupling part 220, a spring 622 elastically supporting the latch 621 to push the locking projection 621a toward the second coupling part 220, and a bracket 623 provided with one end connected to the latch 621 and the other end contacting the second lever 630.

The second lever 630 is configured such that one end of the second lever 630 is rotatably coupled with the third bed part 400 and the other end of the second lever 630 is rotated upward and downward. The other end of the bracket 623 contacts the upper surface of the other end of the second lever 630.

FIG. 14 is a cross-sectional view illustrating operation of the second levers to separate the third bed parts from the first bed part, and FIG. 15 is a cross-sectional view illustrating separation of the third bed parts from the first bed part.

When a user rotates the other end of the second lever 630 upward, the other end of the bracket 623 is lifted up by the second lever 630, the lower end of the latch 621 coupled with the bracket 623 is rotated in the counterclockwise direction, and thus the locking projection 621a is separated from the locking groove 222.

When the third bed part 400 is lifted up under the condition that the locking projection 621a of the latch 621 is separated from the locking groove 222, the insertion part 610 is separated from the coupling hole 221, and thus the third bed part 400 is separated from the first bed part 200, as shown in FIG. 15.

When the insertion part 610 is inserted into the coupling hole 221 of the second coupling part 220 to couple the third bed part 400 with the first bed part 200, the inclined surface of the locking projection 621a of the latch 621 is pushed along the surface of the second coupling part 220, and then the locking projection 621a is inserted into the locking groove 222 by elastic force of the spring 622 and is thus fixed. Thereby, the third bed part 400 is coupled with the first bed part 200.

FIG. 16 is a perspective view illustrating a plurality of ascending and descending covers shown in FIG. 1, and FIG. 17 is an exploded perspective view illustrating a state in which two cover plates of the ascending and descending cover are separated.

The plural ascending and descending covers are connected, and surround the support column and the ascent and descent driving device so as not to be exposed to the outside, as shown in FIG. 1.

Each of the ascending and descending covers includes a pair of cover plates 110 detachably coupled with each other, and coupling parts 120 coupling both ends of the cover plates 110 with each other.

The coupling parts 120 include first coupling plates 121 formed at the insides of both ends of one of the pair of cover plates 110, and second coupling plates 122 formed at the insides of both ends of the other one of the pair of cover plates 110 and coupled with the first coupling plates 121.

The first and

second coupling plates

121 and 122 are formed by bending both ends of the cover plates 110 inward.

Plural sideward openings 121a opened in the sideward direction are vertically separated from each other and formed at the ends of the first coupling plate 121, and upward openings 121b opened to the insides of the sideward openings 121a are formed under the respective sideward openings 121a.

Plural coupling clips 122a which pass through the sideward openings 121a and are then inserted into the upward openings 121b are vertically separated from each other and formed at the ends of the second coupling plate 122.

FIG. 18 is a perspective view illustrating a process of coupling the two cover plates of the ascending and descending cover, and FIG. 19 is a perspective view illustrating a state in which the two cover plates of the ascending and descending cover are coupled.

First, when the coupling clips 122a of the second coupling plate 122 are inserted into the sideward openings 121a of the first coupling plate 122 and then lowered to the insides of the upward openings 121b, the coupling clips 122a are inserted into the upward openings 121b, thereby coupling the first and

second coupling plates

121 and 122 with each other.

FIG. 20 is a cross-sectional view illustrating connection between two ascending and descending covers.

A first fixing part 111 bent inward extends from the lower ends of the inner surfaces of the cover plates 110 of the ascending and descending cover 100, and a second fixing part 112 bent outward and engaged with the first fixing part 111 is formed at the upper ends of the inner surfaces of the cover plates 110. Here, from among the respective ascending and descending covers 100, the second fixing part 112 is not formed on the uppermost ascending and descending cover 100, and the first fixing part 111 is not formed on the lowermost ascending and descending cover 100.

Through the above-described structure of the ascending and descending covers 100, when the uppermost ascending and descending cover 100 is raised, other ascending and descending covers 100 provided with the first and second fixing

parts

111 and 112 engaged with each other and located under the uppermost ascending and descending cover 100 are raised too. On the other hand, when the ascending and descending covers 100 are lowered, engagement between the first and second fixing

parts

111 and 112 is released and thus the ascending and descending covers 100 overlap each other. The respective ascending and descending covers 100 are manufactured in different sizes such that the upper ascending and descending cover 100 surrounds the lower ascending and descending cover 100.

FIG. 21 is a plan view illustrating a remote controller shown in FIG. 1.

The remote controller 5 may communicate with a controller (not shown) controlling raising and lowering of the upper plate 4 and the inclination of the upper plate 4 by wire, or may communicate with the controller wirelessly. Such a remote controller 5 is provided with buttons to adjust raising and lowering of the upper plate 4 and the inclination of the upper plate 4.

Various embodiments have been described in the best mode for carrying out the invention.

A separation type bed in accordance with one embodiment of the present invention may be used for various purposes, i.e., as a bed in a massage shop as well as an operating table and a treatment bed used in a hospital. Particularly, the attachment and detachment structure and the angle adjustment structure of a second bed part of the separation type bed may be variously applied to a seat for vehicles, etc.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

A separation type bed comprising:

a first bed part on which a user lies or sits;

a second bed part detachably coupled with one side of the first bed part; and

first coupling devices to detachably couple the second bed part with the first bed part,

wherein, in each of the first coupling devices, a first shaft extending from the second bed part is coupled with the first bed part by inserting the first shaft into the first bed part, and is separated from the first bed part by manipulation of a first lever provided on the first bed part.
The separation type bed according to claim 1, wherein:

first coupling parts with which the first shafts of the first coupling devices are detachably coupled are formed at the side of the first bed part, a first shaft insertion hole into which the first shaft is separably inserted is formed on each of the first coupling parts, and a latching groove is formed on the side surface of the first shaft; and

each of the first coupling devices includes:

a second shaft sliding perpendicular to the first shaft insertion hole within the first coupling part and provided with one end inserted into the latching groove to lock the first shaft;

a first lever coupled with the second shaft and forcibly separating the second shaft inserted into the latching groove from the latching groove;

a third shaft installed on the first coupling part and locking the second shaft so as to prevent the end of the second shaft from protruding to the inside of the first shaft insertion hole; and

a pushing unit configured to be pushed together with the third shaft by the first shaft and releasing locking of the second shaft, when the first shaft is inserted into the first coupling part.
The separation type bed according to claim 2, wherein:

the second shaft includes:

a lever coupling part provided with one end with which the first lever is coupled; and

a first locking part extending from the other end of the lever coupling part and having a greater cross-sectional area than the lever coupling part;

a locking projection inserted into the latching groove of the first shaft or separated from the latching groove and a fixing protrusion to which one end of the third shaft is fixed to prevent the locking projection from protruding to the inside of the first shaft insertion hole are formed at one end of the first locking part; and

a first elastic member elastically supporting the first locking part is provided on the outer surface of the lever coupling part, and when locking of the second shaft is released through separation of the third shaft, the locking projection protrudes to the inside of the first shaft insertion hole by elastic force of the first elastic member.
The separation type bed according to claim 3, wherein the third shaft includes:

a pushing unit coupling part provided with the outer end slidably inserted into the pushing unit; and

a second locking part extending from the pushing unit coupling part, having a greater cross-sectional area than the pushing unit coupling part, and provided with the end fixed to the fixing protrusion of the second shaft to lock the second shaft.
The separation type bed according to claim 4, wherein a second elastic member elastically supporting the second locking part is provided on the outer surface of the pushing unit coupling part, and when force applied to push the pushing unit is released, the second locking part is returned to an original state thereof by elastic force of the second elastic member so as to lock the second shaft.
The separation type bed according to any one of claims 2 to 5, wherein the pushing unit includes:

a support plate located at a position separated from the other end of the first shaft insertion hole;

a support rod extending from the front surface of the support plate toward the other end of the first shaft insertion hole;

a pushing plate provided with one end, into which one end of the support rod is slidably inserted, and the other end, into which the outer end of the third shaft is slidably inserted;

a pushing projection which extends from the front surface of one end of the pushing plate, into which the support rod is inserted, and which is inserted into or separated from the first shaft insertion hole; and

a third elastic member provided on the outer surface of the support rod between the pushing plate and the support plate and elastically supporting the pushing plate.
The separation type bed according to claim 1, further comprising second coupling devices to detachably couple third bed parts with the other side of the first bed part.
The separation type bed according to claim 7, wherein:

second coupling parts to couple the third bed parts with the first bed part are formed at the other side of the first bed part, and a coupling hole opened in the upward direction and a locking groove opened in the sideward direction are formed on each of the second coupling parts; and

each of the second coupling devices includes:

an insertion part formed vertically on each of the third bed parts and separably inserted into the coupling hole of each of the second coupling parts;

a third locking part locking the insertion part so as not to be separated from the coupling hole; and

a second lever forcibly releasing locking of the third locking part.
The separation type bed according to claim 8, wherein the third locking part includes:

a latch rotatably coupled with each of the third bed parts and provided with a locking projection protruding from the lower portion thereof and inserted into the locking groove of each of the second coupling parts;

a fourth elastic member elastically supporting the latch to push the locking projection toward each of the second coupling parts; and

a bracket provided with one end connected to the latch and the other end contacting the second lever.
The separation type bed according to claim 1, further comprising a plurality of ascending and descending covers surrounding a support column supporting the first bed part such that the first bed part may raise and lower.
The separation type bed according to claim 10, wherein:

each of the plurality of ascending and descending covers includes:

a pair of cover plates detachably coupled with each other; and

coupling parts coupling both ends of the cover plates with each other; and

the coupling parts include first coupling plates formed at the insides of both ends of one of the pair of cover plates, and second coupling plates formed at the insides of both ends of the other one of the pair of cover plates and coupled with the first coupling plates.
The separation type bed according to claim 11, wherein sideward openings opened in the sideward direction are formed at the ends of the first coupling plate, upward openings opened to the insides of the sideward openings are formed under the respective sideward openings, and coupling clips which pass through the sideward openings and are then inserted into the upward openings are formed at the ends of the second coupling plates.
The separation type bed according to claim 1, further comprising angle adjustment devices to adjust the angle of the second bed part,

wherein one end of the first shaft is separably inserted into the first bed part, and the other end of the first shaft is rotatably coupled with one side of the second bed part.
The separation type bed according to claim 13, wherein each of the angle adjustment devices includes:

a saw-toothed part including a plurality of saw teeth separated from each other and formed at the other end of the first shaft; and

an angle adjustment lever slidably coupled with the second bed part and provided with one end selectively inserted into a space between the saw teeth of the saw-toothed part to adjust the rotating angle of the second bed part,

wherein the angle adjustment lever includes:

a handle configured so as to be pulled toward the other side of the second bed part;

a connection rod, one end of which is coupled with the handle;

an insertion rod coupled with the other end of the connection rod and provided with one end inserted into the space between the saw teeth of the saw-toothed part; and

a fifth elastic member provided on the outer surface of the insertion rod to move the insertion rod toward the saw-toothed part.
A separation type bed comprising:

a first bed part which is supported by a support column and on which a user lies or sits;

a second bed part detachably coupled with one side of the first bed part;

third bed parts detachably coupled with the other side of the first bed part;

first coupling devices to detachably couple the second bed part with the first bed part;

second coupling devices to detachably couple the third bed parts with the first bed part; and

ascending and descending covers surrounding the support column,

wherein, in each of the first coupling devices, a first shaft extending from the second bed part is coupled with the first bed part by inserting the first shaft into the first bed part, and is separated from the first bed part by manipulation of a first lever provided on the first bed part.
The separation type bed according to claim 15, further comprising angle adjustment devices to adjust the angle of the second bed part.