WO2017217774A1

WO2017217774A1 - Posture change control device and bed frame comprising same

Info

Publication number: WO2017217774A1
Application number: PCT/KR2017/006223
Authority: WO
Inventors: 심우정; 정진택
Original assignee: 주식회사 퍼스트케어
Priority date: 2016-06-15
Filing date: 2017-06-15
Publication date: 2017-12-21
Also published as: KR101805905B1

Abstract

Disclosed is a posture change control device and a bed frame comprising the same. The posture change control device, provided on both sides of a bed frame and configured to adjust the angle of a backrest frame, comprises: a base frame connected to the bed frame on both sides of the bed frame; a guide hole provided on the base frame along the longitudinal direction of the base frame; a first connection part of which one side is fixed and coupled to an end of the backrest frame and the other side is connected to the base frame in the guide hole and is provided to be movable along the guide hole, the first connection part being provided to be parallel with the backrest frame on the end of the backrest frame; and a second connection part comprising a one side connection part which is formed to be parallel with the first connection part and of which one end is fixed and coupled to the first connection part, and an opposite side connection part which is upwardly curved from the other end of the one side connection part and extends to form an angle with the one side connection part and which is hinge-coupled to the base frame so as to be rotatable about a hinge shaft according to the movement of the first connection part.

Description

Posture change control device and bed frame having same

The present invention relates to a posture conversion technology, and more particularly to a posture conversion control device and a bed frame having the same.

In general, the electric bed is configured such that the operation of the bed can be made by electric for the convenience of the caregiver and the person who is uncomfortable with the patient or the elderly. That is, the height of the bed and the angle of the back frame is operated by electric, for this purpose, an actuator and an operating mechanism are installed between the upper frame and the lower frame constituting the bed frame.

In the related art, when the back frame is lifted up, the bed frame of the thigh or leg position is also lifted up to adjust the back angle. Through this, the prior art attempts to prevent a problem that the user is swept back or pushed during the lifting operation of the back frame.

However, when the existing bed frame is used by a person whose physical condition is not suitable for the structure of the bed frame, there is a problem that the user's back and hips are pushed back or the part contacting the bed is wiped out when the back frame is lifted up. Will occur.

An embodiment of the present invention is to provide a posture conversion control device and bed frame having the same so that the part in contact with the bed is not wiped out or the back and hip of the user does not occur when adjusting the back of the bed.

According to an embodiment of the present disclosure, an apparatus for adjusting posture includes a posture converting adjusting apparatus provided on both sides of a bed frame and adjusting an angle of a back frame, the base frame being connected to the bed frame on both sides of the bed frame; A guide hole provided along the longitudinal direction of the base frame in the base frame; One side is fixedly coupled to the end of the back frame, the other side is connected to the base frame in the guide hole, the other side is provided to be movable along the guide hole, parallel to the back frame at the end of the back frame A first connection portion provided to be made; And one end fixedly coupled to the first connection part, one side connection part formed in parallel with the first connection part, and the other end of the one connection part bent upwards to extend inclined with the one connection part, and to the movement of the first connection part. The second connector includes a second connection portion hinged to the base frame to be rotatable about a hinge axis.

The guide hole may include at least one section in which the height of the guide hole increases from one side of the base frame to one side.

The posture change control apparatus may further include a guide roller provided to move along the guide hole in the guide hole, and the first connection part may be connected to the guide roller in the guide hole and move along the guide hole. have.

In the ascending operation of the backrest frame, a point where the first connection part is fixedly coupled to the backrest frame of the first connection part as the first hole moves along the guide hole in one direction from the other side of the guide hole is perpendicular to the ground. It may be arranged to move along.

The base frame may be bent upward in a portion connected to the bed frame to be formed higher than the bed frame, and the other connection part may be hinged to an upper end of the base frame at a position higher than the bed frame.

According to another embodiment of the present disclosure, an apparatus for controlling posture conversion is provided at both sides of a bed frame to adjust an angle of a back frame, wherein both sides of the bed frame may have the height corresponding to the bed frame. A base frame connected with the bed frame; A guide hole provided along the longitudinal direction of the base frame in the base frame; One side is fixedly coupled to the end of the back frame, the other side is connected to the base frame in the guide hole, the other side is provided to be movable along the guide hole, there is provided a space in which the base frame is inserted A first connection part; And a base connecting the first frame with the base frame inside the first connector, one side of which is hinged rotatably to the upper edge of one side of the base frame in accordance with the movement of the first connector, and the other side of the first connector. And a second connection part rotatably hinged to the other end of the first connection part in accordance with the movement of the first connection part inside the first connection part.

The second connection part may be provided bent in the other direction from one side of the second connection part, and may be provided having an inclination with an upper side of the base frame.

According to another embodiment of the present disclosure, an apparatus for controlling posture conversion may include: a base frame connected to the bed frame and configured to adjust an angle of a back frame provided at both sides of a bed frame; A first guide hole provided along the longitudinal direction of the base frame in the base frame and having one end open at one side thereof; A first connection part having one side connected to the back frame, the other side connected to the base frame at the guide hole, and the other side being movable along the first guide hole; And a second connection part having one side formed in parallel with the base frame and the other side connected to the base frame to be rotatable about a hinge axis according to the movement of the first guide hole of the first connection part.

The first guide hole may include at least one section in which the height of the first guide hole is increased from the other side of the base frame toward one side.

The posture change control device may further include a first guide roller provided to move along the first guide hole in the first guide hole, and the first connection part may include the first guide roller in the first guide hole. It is connected to and can move along the first guide hole.

The second connection part may include one side connection part formed in parallel with the base frame and having a second guide hole formed along a length direction; A second guide roller provided to move along the first guide hole and the second guide hole; And a second connection part bent at the other end of the one connection part and inclinedly extended with the one connection part and hinged to the base frame, and the other part of the second guide hole communicates with the first guide hole. The second guide roller may be provided at a portion in communication with the first guide hole in the second guide hole.

The second connecting part may include the second guide roller as the first guide hole moves as the first connecting part moves along the first guide hole in one direction from the other side of the first guide hole when the back frame is lifted up. And when the second guide roller reaches the end of the second guide hole along the second guide hole, and the second guide roller reaches the end of the second guide hole, the second guide roller moves away from one open end of the first guide hole. It may be arranged to.

According to another embodiment of the present disclosure, an apparatus for controlling posture conversion may include: a base frame connected to the bed frame and configured to adjust an angle of a back frame provided at both sides of a bed frame; A plurality of guide rollers spaced apart from each other along a longitudinal direction of the base frame on one side of the base frame and rotatably provided on one side of the base frame; And a side part connected to the backrest frame, extending in a shape corresponding to the base frame, and having a width corresponding to the diameter of the guide roller, the guide part being in contact with the guide roller. And a first connection part provided to be movable by a guide, wherein the guide roller rotates as the first connection part moves, and the movement of the first connection part is guided by the rotation of the guide roller.

The base frame may be formed with a falling curve toward the center of the base frame at both ends of the base frame.

The other direction of the base frame is formed having a width corresponding to the height of the guide roller, one side direction of the base frame is formed having a width corresponding to the backrest frame, the width of the first connecting portion, The other side may be formed to be wider in one direction.

According to an embodiment of the present invention, when adjusting the back frame of the bed frame, it is possible to prevent the user's back and hips from being pushed or the part contacted with the bed by the operation of the user's posture conversion adjusting device.

1 is a perspective view of a posture converting apparatus according to an embodiment of the present invention

Figure 2 is a perspective view showing a posture conversion control unit provided on one side of the bed frame according to the first embodiment of the present invention

3 is an operation of the posture conversion control unit for adjusting the angle of the backrest frame according to the first embodiment of the present invention

Figure 4 is a perspective view showing a connection structure of the back frame and the posture change control unit according to a second embodiment of the present invention

5 is an operation of the posture conversion control unit for adjusting the angle of the backrest frame according to a second embodiment of the present invention

6 is a perspective view showing a connection structure of the backrest frame and the posture change control unit according to the third embodiment of the present invention;

7 is an operation of the posture conversion control unit for adjusting the angle of the backrest frame according to a third embodiment of the present invention

8 is a perspective view showing a connection structure of the backrest frame and the posture change control unit according to the fourth embodiment of the present invention;

9 is an operation of the posture conversion control unit for adjusting the angle of the backrest frame according to a fourth embodiment of the present invention

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to assist in a comprehensive understanding of the methods, devices, and / or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification. The terminology used in the description is for the purpose of describing embodiments of the invention only and should not be limiting. Unless expressly used otherwise, the singular forms “a,” “an,” and “the” include plural forms of meaning. In this description, expressions such as "comprises" or "equipment" are intended to indicate certain features, numbers, steps, actions, elements, portions or combinations thereof, and one or more than those described. It should not be construed to exclude the presence or possibility of other features, numbers, steps, actions, elements, portions or combinations thereof.

Meanwhile, directional terms such as upper side, lower side, one side, the other side, and the like are used in connection with the orientation of the disclosed drawings. Since the components of the embodiments of the present invention can be positioned in various orientations, the directional terminology is used for the purpose of illustration and not limitation.

In addition, 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 may be used for the purpose of distinguishing one component from another component. 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.

1 is a perspective view of a posture converting apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the posture converting apparatus 100 may include a support 102, a bed frame 104, a backrest frame 106, and a posture converting adjuster 108. The posture converting apparatus 100 is provided in a symmetrical form with respect to the central axis in the longitudinal direction of the posture converting apparatus 100. Hereinafter, the posture converting apparatus 100 will be described based on the components provided on one side of the posture converting apparatus 100.

The support 102 may support the bed mattress 50. Specifically, the support unit 102 may be provided horizontally with the ground, and support the bed mattress 50 positioned above the support unit 102. The support portion 102 may be provided horizontally with the ground by providing the support portion 102 with one or more supports 102-1 on the surface facing the ground. The support 102-1 may be provided on the lower surface of the support 102 to be perpendicular to the support 102. At this time, the support 102-1 may be provided with a height adjustment structure to adjust the height between the support 102 and the ground.

The bed frame 104 may fix the bed mattress 50 positioned on the support 102. Bed frame 104 may be provided on the upper side of the support (102). For example, the bed frame 104 may be provided to surround the bed mattress 50 on the outside of the bed mattress 50. Bed frame 104 may be provided to adjust the length and width according to the size of the bed mattress (50). Bed frame 104 may be provided with a posture conversion control unit 108 to be connected to the back frame 106 on both sides.

The back frame 106 may be connected to the posture change controller 108 at one side of the bed frame 104 (part corresponding to the upper body of the user). The back frame 106 may be provided to correspond to one side of the bed frame 104 inside the one side of the bed frame 104. The angle of the back frame 106 may be adjusted according to the operation of the posture conversion controller 108. The back frame 106 may support a portion of the user's head to the waist in the bed mattress 50. As the angle of the back frame 106 is adjusted by the posture change control unit 108, the angle of the bed mattress 50 is also adjusted.

Specifically, the backrest frame 106 is a pair of side frame 106a at the ends of the pair of backrest side frames 106a and the pair of side frames 106a that are spaced apart and opposed to both sides of the bed frame 104. ) May include a back support frame (106b) formed to connect. The pair of backrest side frames 106a may be provided such that the length from one end to the other end is shorter than the length from one end of the bed frame 104 to the posture change control unit 108 at one end of the bed frame. That is, the pair of backrest side frames 106a may be provided to be connected to the posture change control unit 108 by the first connection unit 114 described later in FIG. 2.

The posture change controller 108 may be provided to adjust the angle of the back frame 106. In detail, the posture change controller 108 may be provided at both sides of the bed frame 104. Preferably, the posture change control unit 108 may be provided at a position corresponding to a portion where the waist of the user is positioned in the bed frame 104 or the bed mattress 50 to adjust the angle of the back frame 106. As such, the posture converting control unit 108 adjusts the angle of the bed mattress 50 at a position corresponding to the part where the user's waist is located, so that the user's waist and hips are pushed back or the user's body is the bed mattress. It becomes possible to prevent being washed by (50). Description of the configuration of the posture conversion control unit 108 will be described in detail later in FIG.

2 is a perspective view illustrating a posture change control unit according to a first embodiment of the present invention.

Referring to FIG. 2, the posture change controller 108 adjusts the angle of the backrest frame 106, and includes a base frame 112, a first connection part 114, a guide hole 116, and a guide roller 118. ), A second connection unit 120, and a power transmission unit 122.

The base frame 112 is a frame provided with each component of the posture change control unit 108 and may be provided connected to the bed frame 104. The base frame 112 may be located at both sides of the bed mattress 50. In detail, the base frame 112 may be provided at a position corresponding to a portion where the waist of the user is positioned in the bed frame 104 or the bed mattress 50. In addition, the base frame 112 may be bent upward in a portion connected to the bed frame 104 may be formed higher than the bed frame 104. In addition, the base frame 112 may be formed higher than the opposite portion (part facing the back frame 106 side) connected to the bed frame 104. That is, the base frame 112 may be provided to have a step height. Here, the base frame 112 may be provided integrally with the bed frame 104.

The first connection unit 114 is for connecting the posture conversion control unit 108 and the back frame 106, and may include a first-first connection unit 114-1 and a second connection unit 114-2. Can be. The first-first connection part 114-1 and the first-second connection part 114-2 may be formed to face each other at a predetermined interval. Specifically, the first-first connection part 114-1 and the first-second connection part 114-2 may include a base frame between the first-first connection part 114-1 and the first-second connection part 114-2. 112 may be formed to face each other at a predetermined interval to be inserted. In addition, an end portion of the backrest frame 106 may be inserted into a space between the first-first connection part 114-1 and the first-second connection part 114-2. One end of the first-first connection part 114-1 and the first-second connection part 114-2 is connected to an end of the inserted backrest frame 106 and a fixing member (for example, a bolt and a nut). Can be fixedly coupled. In this case, the first connection part 114 may be provided in parallel with the side frame 106a of the backrest frame 106 and fixedly coupled thereto. One end of the first-first connection part 114-1 and the first-second connection part 114-2 is connected to the end portion of the backrest frame 106, and the backrest frame 106 is connected to the first connection part. May be seated at 114.

The other ends of the first-first connection part 114-1 and the first-second connection part 114-2 may be combined with the base frame 112. In detail, the other ends of the first-first connection part 114-1 and the first-second connection part 114-2 may be coupled to each other at the guide hole 116 of the base frame 112. The first-first connection part 114-1 and the first-second connection part 114-2 may be coupled to each other in the guide hole 116 through the guide roller 118. The other ends of the first-first connection part 114-1 and the first-second connection part 114-2 may be guided along the guide hole 116. On the outer surface of the other end of the first connector 114 (that is, the outer surface of the portion connected to the guide hole 116), a protrusion 114-3 for connecting the first connector 114 to the power transmission unit 122 protrudes. Can be prepared.

The guide hole 116 may be provided in the base frame 112. Specifically, the guide hole 116 may be provided along the longitudinal direction of the base frame 112 at the lower end of the base frame 112. The guide hole 116 may be provided to allow the first connection part 114 connected to the guide hole 116 to move along the length direction of the bed frame 104. In this case, the guide hole 116 may be inclined toward one side of the base frame 112 (that is, the direction in which the first connecting portion 114 and the back frame 106 are connected). Here, the guide hole 116 is shown as being inclined at a constant inclination, but is not limited thereto. The guide hole 116 may include at least one region in which the inclination increases in one direction of the base frame 112. Of course you can.

The guide roller 118 may be a connecting member for connecting the first connecting portion 114 and the guide hole 116. Specifically, the guide roller 118 may be provided in the guide hole 116, and may be provided to move along the guide hole 116. The guide roller 118 may interconnect the other ends of the first-first connection part 114-1 and the first-second connection part 114-2 to the guide hole 116. The guide roller 118 may be formed of a roller member for moving along the guide hole 116. That is, as the guide roller 118 moves along the guide hole 116, the first connection part 114 connected to the guide roller 118 moves along the guide hole 116, thereby causing the first connection part 114 to be moved. It is possible to adjust the angle of the backrest frame 106 connected with.

The second connector 120 is for connecting the base frame 112 and the first connector 114, and may include a 2-1 connector 120-1 and a 2-2 connector (not shown). . The 2-1 connecting portion 120-1 and the 2-2 connecting portion (not shown) may be formed to face each other at a predetermined interval. Specifically, the 2-1 connector 120-1 and the 2-2 connector (not shown) may include the base frame 112 and the second frame between the 2-1 connector 120-1 and the 2-2 connector. The first connection part 114 may be formed to face each other at a predetermined interval so as to be inserted. At this time, the 2-1 connecting portion 120-1 and the 2-2 connecting portion (not shown) may be provided in pairs in which two plates having a predetermined thickness face each other. One end of the 2-1 connecting portion 120-1 and the 2-2 connecting portion (not shown) is fixed to the outer surfaces of the 1-1 connecting portion 114-1 and the 1-2 connecting portion 114-2, respectively. Can be combined. In addition, the other ends of the 2-1 connecting portion 120-1 and the 2-2 connecting portion (not shown) may be rotatably hinged to the base frame 112, respectively. The second connection part 120 may be provided at a position corresponding to a portion where the hinge of the base frame 112 is hinged (particularly, a portion where the user's hip joint is located). When the angle of the back frame 106 is adjusted, the second connector 120 may be provided such that the hinge 120-7 connected with the base frame 112 is rotated about the hinge 120-7 axis.

The second connection part 120 is provided with a pair of two plates facing each other. Hereinafter, for convenience of description, the second connection part 120-1 connected to the 1-1 connection part 114-1 is provided. The description will be made in the center, and the second connection part (not shown) has the same or similar configuration, and thus description thereof will be omitted.

The 2-1 connector 120-1 may include one connector 120-3 and the other connector 120-4. Here, the one side connection portion 120-3 may be fixedly coupled to the outer surface of the first-first connection portion 114-1, and the other side connection portion 120-4 may be rotatably hinged to the base frame 112.

The second-first connection part 120-1 may be provided at a predetermined angle. Specifically, the 2-1 connecting portion 120-1 may have a form in which one side connecting portion 120-3 and the other side connecting portion 120-4 have a predetermined angle. One side connection portion 120-3 is the other end of the first connection portion 114 (ie, the first connection portion 114 is connected to the guide hole 116 in a position fixedly coupled to the outer surface of the first-first connection portion 114-1). Connected portion) in parallel to the first connection portion 114 in the direction. The other connection part 120-4 may be inclined at a predetermined angle upward from the end of the one connection part 120-3, and may be a part coupled to the upper end of the base frame 112 by a hinge.

That is, the second connecting portion 120 formed to be inclined at a predetermined angle may be provided at a position corresponding to the portion where the waist of the user is located. When the angle of the back frame 106 is adjusted, when the first connector 114 is guided along the guide hole 116, the hinge 120-7 connecting the second connector 120 and the base frame 112 is hinged. (120-7) will be rotated about the axis. In this case, the part where the back frame 106 and the first connection part 114 are fixedly coupled can move only in a direction perpendicular to the ground at a predetermined position. Therefore, when the angle of the back frame 106 is adjusted, it is possible to prevent the user's back and hips from being pushed back or swept onto the bed mattress 50.

The power transmission unit 122 may transmit power to the first connection unit 114 for adjusting the angle of the back frame 106. One side of the power transmission unit 122 may be connected to a driving unit (not shown) for generating power for adjusting the angle of the backrest frame 106. The other side of the power transmission unit 122 may be connected to the protrusion 114-3 provided at the other end of the first connection portion 114. In detail, the power transmission unit 122 transmits the power generated from the driving unit (not shown, for example, a motor, etc.) to the protrusion 114-3 provided in the first connection unit 114, thereby supporting the backrest frame 106. The angle of can be adjusted.

Here, the driving unit (not shown) may be a motor for generating power, or the like, and may be installed at one side of the bed frame 104. For example, the power transmission unit 122 may include a push-pull wire for transmitting power generated from a driving unit (not shown). The power transmission unit 122 may be connected to two first connection units 114 provided on both sides of the posture converting apparatus 100 to transmit power generated from a driving unit (not shown). Alternatively, the power transmission unit 122 may transmit power to one first connection unit 114 when two first connection units 114 provided on both sides of the bed frame 104 are connected to each other.

3 is a view illustrating an operation of the posture converting control unit in the lifting operation of the backrest frame according to the first embodiment of the present invention.

FIG. 3A is a view showing before the back frame 106 is lifted up (ie, the bed mattress 50 is parallel to the ground). Referring to FIG. 3A, the portion where the first connecting portion 114 and the base frame 112 are connected (that is, the portion where the protrusion 114-3 of the first connecting portion 114 is located) is the guide hole 116. It can be located close to the other end of the). In this case, the protrusion 114-3 may be positioned at a position opposite to the hinge 120-7 axis of the hinge 120-7 connecting the second connector 120 and the base frame 112.

3B is a view showing when the back frame 106 is raised at an angle. Referring to FIG. 3B, when the first connection part 114 receives power from the power transmission part 122, the other end of the first connection part 114 is formed in one direction along the guide hole 116 ( That is, the bed mattress 50 can be moved in the direction in which the upper body of the user is located. Accordingly, the hinge 120-7 connecting the second connector 120 and the base frame 112 rotates in the clockwise direction about the hinge 120-7 axis while the back frame 106 is the bed frame 104. The angle increases with respect to the.

FIG. 3C is a view showing when the ascending operation of the backrest frame 106 is completed. Referring to FIG. 3C, the first connection part 114 may be guided in the one direction along the guide hole 116. Accordingly, the portion in which the protrusion 114-3 of the first connection portion 114 is located may be located near one end of the guide hole 116. In addition, the hinge 120-7 connecting the second connector 120 and the base frame 112 stops the clockwise rotation about the hinge axis.

3 (d) is a fixed coupling of the first connecting portion 114 and the back frame 106 in a series of ascending operations as shown in FIGS. 3 (a), (b) and (c) of the back frame 106 Is a view schematically showing the movement of a portion. Referring to (d) of FIG. 3, it can be seen that the fixedly coupled point P of the first connecting portion 114 and the backrest frame 106 moves in a direction perpendicular to the ground at a predetermined position. That is, if the other end of the first connecting portion 114 is hinged to the base frame 112 during the lifting operation of the back frame 106, the fixed coupling portion of the first connecting portion 114 and the back frame 106 is The circular motion is performed around the other end of the first connection part 114. At this time, the fixedly coupled portion of the first connecting portion 114 and the backrest frame 106 is further away from the other direction based on the imaginary line L perpendicular to the ground.

However, in the disclosed embodiment, since the other end of the first connecting portion 114 moves in one direction from the other side along the guide hole 116, the fixedly coupled portion of the first connecting portion 114 and the back frame 106 is circular. Since the movement is compensated by the movement from the other side of the other end of the first connection portion 114 to the one direction as far away from the other side with respect to the virtual line perpendicular to the ground, the first connection portion 114 and the back frame ( The fixedly coupled portion of 106 is moved along an imaginary line perpendicular to the ground.

Therefore, the posture converting apparatus 100 may prevent the back and hip portions of the user from being pushed or swept onto the bed mattress 50 when adjusting the angle of the back frame 106.

Here, the operation of the posture converting control unit 108 during the ascending operation of the back frame 106 has been described. In the descending operation of the backrest frame 106, the posture converting control unit 108 is opposite to the above ascending operation. In operation, the lowering of the back frame 106 may be performed.

Figure 4 is a perspective view showing a connection structure of the back frame and the posture change control unit according to a second embodiment of the present invention. Here, the parts which are added or different from those of the first embodiment shown in FIGS. 2 and 3 will be mainly described.

Referring to FIG. 4, the posture change control unit 208 includes a base frame 212, a first connection unit 214, a guide hole 216, a guide roller 218, a second connection unit 220, and a power transmission unit. 222.

The base frame 212 is a frame provided with each configuration of the posture converting control unit 208 and may be provided at a height corresponding to the height of the bed frame 104. The base frame 212 may have a groove 212-1 for connecting the second connector 220 to an upper edge of one side (specifically, the side close to the back frame 106). In this case, the groove 212-1 may be formed to correspond to a shape in which the second connector 220 is connected to the base frame 212 by the first hinge 212-2. In an exemplary embodiment, the groove 212-1 may have an upper side longer than a lower side, and may have a trapezoidal shape having one side at right angles.

The first connector 214 is used to connect the posture change control unit 208 and the back frame 106 to each other. -3 connection portion (214-3) may be included. In detail, the first-first connection unit 214-1 and the first-second connection unit 214-2 may be formed to face each other. In addition, the first-first connection part 214-1 and the second-second connection part 214-2 may be formed to correspond to the base frame 212 such that the base frame 212 is inserted therebetween.

The first-first connection portion 214-1 and the first-second connection portion 214-2 are formed to face each other. Hereinafter, for convenience of description, the first-first connection portion 214-1 and the second connection portion 214-1 will be described. do.

The first-first connection part 214-1 may be provided in a hexahedral shape having inclinations on one side and the other side. In detail, the first-first connection part 214-1 may have a lower side (ie, a side closer to the ground) than the upper side (the opposite side of the lower side). In this case, the lower side of the first-first connection part 214-1 may have a length that is similar to or the same as the length of the base frame 212. One side (specifically, a side close to the back frame 106) of the first-first connection part 214-1 may be formed higher than the other side. In this case, the upper side of the first-first connection unit 214-1 may be formed at a position higher than the one side height of the first-first connection unit 214-1. Therefore, the upper side of the first-first connection unit 214-1 may be formed to have an inclination on one side and the other side of the first-first connection unit 214-1.

The other ends of the first-first connection part 214-1 and the first-second connection part 214-2 may be combined with the base frame 112. Specifically, the other ends of the first-first connection part 214-1 and the second-second connection part 214-2 may be mutually coupled by the guide roller 218 at the guide hole 216 of the base frame 212. Can be. The other ends of the first-first connection part 214-1 and the first-second connection part 214-2 may move along the guide hole 216.

The 1-3 connection part 214-3 may connect the upper side of the 1-1 connection part 214-1 and the 1-2 connection part 214-2. Specifically, the first-third connector 214-3 is connected from one end of the first-first connector 214-1 and the first-second connector 214-2 to the upper end (that is, the upper end). To a portion formed with an inclination toward the other side) to connect the first-first connection part 214-1 and the first-second connection part 214-2.

The outer surface of the other end of the first connector 214 (that is, the outer surface of the portion connected to the guide hole 216) may be provided with a protrusion 214-4 protruding to be connected to the power transmission unit 222 which will be described later. .

The second connector 220 may connect the base frame 212 and the first connector 214 inside the first connector 214. In detail, one side of the second connector 220 may be hinged to the groove 212-1 of the base frame 212 through the first hinge 212-2 within the first connector 214. The other side of the second connector 220 is a second hinge 212-3 inside the first-first connector 214-1 and the first-second connector 214-2 inside the first connector 214. It can be hinged through. At this time, the second hinge 212-3 is connected to the upper end of the first connection part 214 (specifically, the portion close to the 1-3 connection part 214-3) and the first-first connection part 214-1 and the first. It may be hinged with the 1-2 connection portion (214-2).

The second connection part 220 may be provided at a predetermined angle. In detail, the second connector 220 may be formed to correspond to the hypotenuse of the groove 212-1 formed in a trapezoidal shape. In addition, the second connector 220 may be formed to have a predetermined slope with the upper surface of the base frame 212. That is, the second connection part 220 may have a shape inclined with a predetermined slope on the same line as the upper surface of the base frame 212.

5 is a view illustrating an operation of the posture change control unit in the lifting operation of the backrest frame according to the second embodiment of the present invention.

FIG. 5A is a view showing before the back frame 106 is lifted up (ie, the bed mattress 50 is parallel to the ground). Referring to FIG. 5A, a portion where the first connector 214 and the base frame 212 are connected (that is, a portion where the protrusion 214-4 of the first connector 214 is located) is a guide hole 216. It can be located close to the other end of the). Before the angle of the back frame 106 is adjusted, the base frame 212 may be inserted into the first connector 214.

FIG. 5B is a view showing when the back frame 106 is raised at an angle. Referring to FIG. 5B, when the first connection part 214 receives power from the power transmission part 222, the other end of the first connection part 214 is one side from the other side along the guide hole 216. Direction (ie, the direction in which the upper body of the user is positioned in the bed mattress 50). Accordingly, the first hinge 212-2 may rotate in a counterclockwise direction about the axis of the first hinge 212-2. In this case, the second hinge 212-3 may rotate in a clockwise direction about the axis of the second hinge 212-3. As a result, the first connector 214 is lifted up and the back frame 206 is raised as the angle formed with the base frame 212 is increased.

FIG. 5C is a diagram showing when the ascending operation of the back frame 106 is completed. Referring to FIG. 5C, when the first connection portion 214 is guided in the one direction along the guide hole 216, a portion where the protrusion 214-4 of the first connection portion 214 is located is It may be located close to one end of the guide hole 216. In addition, the first connection portion 214 that is lifted due to the operation of FIG. 5B may be fixed at the corresponding position.

Here, the operation of the posture conversion control unit 208 during the ascending operation of the back frame 106 has been described, and the posture conversion control unit 208 is opposite to the above ascending operation during the descending operation of the back frame 106. In operation, the lowering of the back frame 106 may be performed.

6 is a perspective view showing a connection structure of the backrest frame and the posture change control unit according to the third embodiment of the present invention. Here, the parts which are added or different from those of the first embodiment shown in FIGS. 2 and 3 will be mainly described.

Referring to FIG. 6, the posture shift controller 308 may include a base frame 312, a first connector 314, a first guide hole 316, a first guide roller 318, a second connector 320, And a power transmission unit 322.

The base frame 312 is a frame provided with each configuration of the posture change control unit 308, is provided at the same height as the bed frame 104, and may be connected to the bed frame 104.

The first connector 314 is for connecting the posture change control unit 308 and the back frame 106 to each other. The first-first connector 314-1, the first-second connector 314-2, and the first connector 314-2 are provided. It may include 1-3 connecting portion (314-3). The first-first connection unit 314-1 and the first-second connection unit 314-2 may be formed to face each other at a predetermined interval. In detail, the first-first connection unit 314-1 and the first-second connection unit 314-2 may include a base frame between the first-first connection unit 314-1 and the first-second connection unit 314-2. 312 may be formed to face each other at a predetermined interval so as to be inserted.

One end of the first-first connection part 314-1 and the second connection part 314-2 may be fixedly coupled to the end of the backrest frame 106 through a fixing member (eg, a bolt or a nut). Can be. Alternatively, one end of the first-first connection part 314-1 and the second-second connection part 314-2 may be inserted into and fixed to an end of the backrest frame 106. In this case, the first connection part 314 may be provided in parallel with the side frame 106a of the backrest frame 106 and coupled.

The other ends of the first-first connection part 314-1 and the first-second connection part 314-2 may be combined with the base frame 312. Specifically, the other ends of the first-first connection part 314-1 and the second-second connection part 314-2 are connected to the first guide roller 318 in the first guide hole 316 of the base frame 312. By mutual coupling. The other ends of the first-first connection part 314-1 and the second-connection part 214-2 may move along the first guide hole 316.

The 1-3 connection part 314-3 may connect the upper side of the 1-1 connection part 314-1 and the 1-2 connection part 314-2. Specifically, the first connection part 314-3 has a base portion of the second connection part 320 described later at one end of the first connection part 314-1 and the second connection part 314-2. The frame 312 may be hinged to a position to connect the first-first connection part 314-1 and the first-second connection part 314-2.

The first connecting portion 314 may include a second guide roller 314-4. In detail, the first connection part 314 may include a second guide roller 314-4 for moving along the second guide hole 320-1 provided in the second connection part 320. That is, the second guide roller 314-4 may connect the first connector 314 and the second connector 320 to the second guide hole 320-1. In this case, the second guide roller 314-4 may be provided by connecting the first-first connection part 314-1 and the first-second connection part 314-2. When the first guide roller 318 moves along the first guide hole 316, the second guide roller 314-4 may move along the second guide hole 320-2. In addition, the outer surface of the other end of the first connection portion 314 (that is, the outer surface of the portion connected to the guide hole 216) may be provided with a protrusion 314-5 protruding to be connected to the power transmission portion 322. .

The first guide hole 316 may be provided in the base frame 312. In detail, the first guide hole 316 may be provided along the length direction of the base frame 312 at the lower end of the base frame 312. In this case, the first guide hole 316 may be inclined in one direction of the base frame 312 (that is, the direction in which the first connection part 314 and the back frame 106 are connected). That is, the first guide hole 316 may be provided so that the first connection part 314 connected to the first guide hole 316 may move along the length direction of the bed frame 104. In addition, the first guide hole 316 may be provided in a form in which one side end is opened. The power transmission unit 322 may enable the first connection unit 314 to operate at a predetermined power when the first connection unit 314 is guided along the first guide hole 316.

The second connector 320 is for connecting the base frame 312 and the first connector 314, and may include a second guide hole 320-1. The second connector 320 may connect the base frame 312 and the first connector 314 inside the first connector 314. The other end of the second connection portion 320 may be hinged to the upper end of the base frame 312 by a hinge (320-2). The hinge 320-2 may be connected to inner surfaces of the first-first connection unit 314-1 and the first-second connection unit 314-2, respectively.

The second connection part 320 may include one connection part 320-3 and the other connection part 320-4. The second connection part 320 may be provided at an angle. In detail, the second connector 320 may have a form in which one side connecting portion 320-3 and the other side connecting portion 320-4 are connected at a predetermined angle. Before the posture change control unit 308 operates (ie, the bed mattress 50 is in a parallel state), one side connection part 320-3 may be formed in parallel with the base frame 312. The other connection part 320-4 may be inclined at an angle upward from an end of the one connection part 320-3, and may be hinged to the upper end of the base frame 312.

The second guide hole 320-1 may be formed in the one side connection part 320-3. The second guide hole 320-1 may be provided along the length direction of the one side connection part 320-3. The other portion of the second guide hole 320-1 may communicate with the first guide hole 316. The second guide roller 314-4 is formed at a portion of the second guide hole 320-1 that communicates with the first guide hole 316, so that the second connection part 314 and the second connection part 320 are second to each other. It is connected to the guide hole 320-1. When the first connection portion 314 moves along the first guide hole 316, the second guide roller 314-4 moves along the first guide hole 316 while communicating with the first guide hole 316. It moves along the second guide hole 320-1.

7 is a view illustrating an operation of the posture change control unit in the lifting operation of the backrest frame according to the third embodiment of the present invention.

FIG. 7A is a view showing before the back frame 106 is lifted up (ie, the bed mattress 50 is parallel to the ground). Referring to FIG. 7A, a portion where the first connecting portion 314 and the base frame 312 are connected, that is, the protrusion 314-5 of the first connecting portion 314 is the other side of the first guide hole 316. It can be located close to the tip. In addition, one side connecting portion 320-3 of the second connecting portion 320 may be positioned to be parallel to the base frame 312.

FIG. 7B is a view showing when the back frame 106 is raised at an angle. Referring to FIG. 7B, when the first connection part 314 receives power from the power transmission part 322, the other end of the first connection part 314 is one side along the first guide hole 316. It may be guided in the direction (that is, the direction in which the upper body of the user in the bed mattress 50). Accordingly, the second guide roller 314-4 may also be guided in one direction along the first guide hole 316 and the second guide hole 320-1. At this time, the backrest frame 106 may perform an upward movement according to the inclination angle of the first guide hole 316. When the second guide roller 314-4 reaches one end of the second guide hole 320-1, the back frame 106 has the second guide roller 314-4. And the second guide hole 320-1 are moved up according to the radius of rotation of the contact portion. In the back frame 106, the first connecting portion 314 and the second guide roller 314-4 are lifted by the inclination of the first guide hole 316, and the lifting operation is performed. When the second guide roller 314-4 reaches one end of the second guide hole 320-1, the second guide roller 314-4 is the first guide hole according to the lifting motion of the backrest frame 106. Out of the open one end of the (316).

That is, the second guide roller 314-4 moves along the first guide hole 316 and the second guide hole 314-4 to a predetermined angle when the back frame 106 is raised, and then the second guide hole 314. When it reaches the end of -4), it is out of the open end of the first guide hole 316, thereby causing the back frame 106 to continuously rise.

FIG. 7C is a view showing when the ascending operation of the backrest frame 106 is completed. Referring to FIG. 7C, the first connection part 314 may be guided in one direction along the first guide hole 316. Accordingly, the portion where the protrusion 314-5 of the first connection portion 314 is located may be located near one end of the first guide hole 316. Accordingly, the lifting operation of the back frame 106 can be completed.

In general, the posture change control unit 308 is formed to a height of 10 cm or more. However, the posture change control unit 308 in the present embodiment is the first connecting portion in the two guide holes (specifically, the first guide hole 316 and the second guide hole 320-1) to operate as described above. By providing the 314 and the second guide roller 314-4, the height of the posture change control unit 308 can be minimized.

Here, the operation of the posture converting control unit 308 during the ascending operation of the back frame 106 has been described. In the descending operation of the backrest frame 106, the posture converting control unit 308 is opposite to the ascending operation. In operation, the lowering of the back frame 106 may be performed.

8 is a perspective view showing the connection structure of the backrest frame and the posture change control unit according to the fourth embodiment of the present invention. Here, the description will be mainly focused on the added or different parts compared with the first embodiment shown in FIGS.

Referring to FIG. 8, the posture shift controller 408 may include a base frame 412, a first connector 414, a guide roller 416, and a power transmission unit 418.

The base frame 412 is a frame provided with each configuration of the posture change control unit 408, is provided at the same height as the bed frame 104, and may be connected to the bed frame 104. In detail, the base frame 412 may have both ends at the same height as the bed frame 104. In addition, the base frame 412 may be formed with an inclination such that the portion of the base frame 412 except for both ends is lower than the height of the bed frame 104. In an exemplary embodiment, the upper side of the base frame 412 is formed with a falling curve in one direction at the other end, and with a falling curve in the other direction at one end, based on the center of the base frame 412. Can be. That is, the base frame 412 may be formed with a falling curve toward the center of the base frame 412 at both ends.

The base frame 412 may be provided with a plurality of guide rollers 416 on the side. In detail, the base frame 412 may include a plurality of guide rollers along the upper end of the base frame 412 corresponding to the shape of the base frame 412 (specifically, shapes having downward curves toward the center at both ends). 416 may be provided. Here, the guide roller 416 is described as being provided on one side of the base frame 412, but is not limited to this, a plurality of guide rollers 416 may be formed on both sides of the base frame 412, of course. to be. In this case, the guide roller 416 may be formed so that the first connection portion 414 is guided when the backrest frame 106 moves up and down.

In detail, the guide roller 416 may be formed in the shape of a cylinder having a predetermined height (specifically, a width corresponding to the bent surface of the first connecting portion 414 to be described later) on the side of the base frame 412. . The guide roller 416 may be provided so that one side thereof is in contact with the side of the base frame 412 to be rotatable. The guide roller 416 may be provided to rotate about the axis of the guide roller 416 during the lifting and lowering operation of the backrest frame 106. Here, the guide roller 416 is formed in a cylindrical shape, it has been described as a plurality provided on the side of the base frame 412, but is not limited to this, the guide roller 416 has a variety of shapes, such as a circular shaft, rolling bearing, etc. It may be formed on one side of the base frame 412.

The first connector 414 is for connecting the posture change control unit 408 and the back frame 106, and may include a first-first connection unit 414-1 and a second connection unit 414-2. Can be. The first-first connection unit 414-1 and the first-second connection unit 414-2 may be formed to face each other at a predetermined interval. Specifically, the first-first connection part 414-1 and the first-second connection part 414-2 may include a base frame between the first-first connection part 414-1 and the first-second connection part 414-2. 412 may be formed to face each other at a predetermined interval to be inserted.

One end of the first-first connection part 414-1 and the first-second connection part 414-2 may be fixedly coupled to the backrest frame 106 through fixing members (eg, bolts and nuts). . Alternatively, one end of the first-first connection part 414-1 and the second-second connection part 414-2 may be inserted and fixed to the backrest frame 106. In this case, the first connection part 414 may be provided in parallel with the side frame 106a of the backrest frame 106 and coupled.

The other ends of the first-first connection part 414-1 and the first-second connection part 414-2 may contact the guide roller 416 of the base frame 412. In detail, the other ends of the first-first connection part 414-1 and the second-second connection part 414-2 may be formed to be movable in contact with the guide roller 416 of the base frame 412. . At this time, the other end (that is, the portion connected to the back frame 106) at one end of the 1-1 connecting portion (414-1) and the 1-2 connecting portion (414-2) is connected to each other Can be formed.

Hereinafter, for convenience of description, the first-first connection unit 414-1 will be described. Since the 1-2 connection part 414-2 has the same or similar configuration as the 1-1 connection part 414-1, a detailed description thereof will be omitted.

The first-first connection part 414-1 may be formed to correspond to the shape of the base frame 412. Specifically, the first-first connection portion 414-1 may be formed with a falling curve toward the center of the first-first connection portion 414-1 at both ends. A guide part 414-3 may be formed in the first-first connection part 414-1 so that the first-first connection part 414-1 is guided along the guide roller 416.

Specifically, the first-first connection portion 414-1 is guided along the guide roller 416 on the inner side of the first-first connection portion 414-1 (that is, the side facing the base frame 412). A guide part 414-3 corresponding to the roller 416 may be formed. The first-first connection part 414-1 may be formed to widen in one direction from the other side of the base frame 412. That is, the other side of the first-first connecting portion 414-1 is formed to have a width corresponding to the height of the guide roller 416, and the closer to the other end connected to the backrest frame 106, the backrest frame 106 becomes closer. It may be formed to correspond to the width of).

The guide part 414-3 may be provided in the form of a groove corresponding to the plurality of guide rollers 416 inside the first-first connection part 414-1. That is, the guide part 414-3 may be provided to insert a plurality of guide rollers 416 protruding from the side of the base frame 412. The guide part 414-3 may have a width h corresponding to the diameter of the guide roller 416. In addition, the upper and lower ends of the guide part 414-3 may be bent inwardly perpendicularly to the base frame 412 to correspond to the guide roller 416 formed in a cylindrical shape to form a groove. Specifically, the thicknesses of the upper and lower ends of the guide part 414-3 may be formed to have a length shorter than the height of the guide roller 416 and may contact the guide roller 416 to guide the backrest frame 106. . Since the thicknesses of the upper and lower ends of the guide part 414-3 are shorter than the height of the guide roller 416, the first-first connection part 414-1 may not be in contact with the base frame 412. Can be.

The backrest frame 106 is capable of raising and lowering operation through the guide roller 416 and the guide portion 413-3. Specifically, when the power transmission unit 418 connected to the outside of the other end of the first-first connection unit 414-1 applies a pulling force to the first connection unit 414, the first connection unit 414 is pulled by the pulling force. It is pulled in one direction. Then, the guide part 414-3 provided in the first connection part 414 is guided by the guide roller 416-1 so that the lifting operation of the backrest frame 106 is possible. That is, the posture converting control unit 408 receives the force for pulling the first connection unit 414 from the power transmission unit 418 through the rotation of the guide roller 416 and the curved shape of the base frame 412. It is possible to raise the back frame 106 by changing the force with the raising force.

9 is a view illustrating an operation of the posture change control unit in the lifting operation of the backrest frame according to the fourth embodiment of the present invention.

FIG. 9A is a view showing before the back frame 106 is lifted up (ie, the bed mattress 50 is parallel to the ground). Referring to FIG. 9A, the plurality of guide rollers 416 formed on the side of the base frame 412 may be inserted into the guide parts 414-3 of the first connection part 414. .

FIG. 9B is a view showing when the back frame 106 is raised at an angle. Referring to FIG. 9B, when the first connection part 414 receives power from the power transmission part 418, the first connection part 414 may include the guide part 414-3 and the guide roller 416. By moving in one direction (that is, the direction of the user's position in the bed mattress 50). At this time, the backrest frame 106 is capable of the lifting operation according to the inclination angle formed on the top of the base frame 412.

That is, when the first connection part 414 receives power in one direction by the power transmission part 418, the first connection part 414 moves in one direction. In this case, since the upper and lower ends of the guide part 414-3 are guided by the rotation of the guide roller 416, the first connection part 414 can be easily moved in one direction.

FIG. 9C is a view showing when the ascending operation of the backrest frame 106 is completed. Referring to FIG. 9C, the first connection part 414 may be guided in the one direction along the guide roller 416. Accordingly, the portion where the first connection portion 414 and the power transmission portion 418 are connected may be located near one end of the base frame 412. Accordingly, the lifting operation of the back frame 106 can be completed.

Here, the operation of the posture converting control unit 408 in the ascending operation of the backrest frame 106 has been described. In the descending operation of the backrest frame 106, the posture converting control unit 408 is opposite to the ascending operation. In operation, the lowering of the back frame 106 may be performed.

Although the present invention has been described in detail with reference to exemplary embodiments above, those skilled in the art to which the present invention pertains can make various modifications to the above-described embodiments without departing from the scope of the present invention. I will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

Claims

It is provided on both sides of the bed frame is a posture conversion control device for adjusting the angle of the back frame,

A base frame connected to the bed frame on both sides of the bed frame;

A guide hole provided along the longitudinal direction of the base frame in the base frame;

One side is fixedly coupled to the end of the back frame, the other side is connected to the base frame in the guide hole, the other side is provided to be movable along the guide hole, parallel to the back frame at the end of the back frame A first connection portion provided to be made; And

One end is fixedly coupled to the first connecting portion, one side connecting portion is formed in parallel with the first connecting portion and the other end of the one side of the connecting portion is bent upwardly extending inclined with the one connecting portion, according to the movement of the first connecting portion And a second connection part including a second connection part hinged to the base frame to be rotatable about a hinge axis.
The method according to claim 1,

The guide hole,

And at least one section in which the height of the guide hole increases from one side to the other side of the base frame.
The method according to claim 1,

The posture change adjustment device,

Further comprising a guide roller provided to move along the guide hole in the guide hole,

And the first connection part is connected to the guide roller in the guide hole and moves along the guide hole.
The method according to claim 1,

In the rising operation of the back frame,

The posture change is provided such that a point fixedly coupled to the backrest frame of the first connection part moves along a vertical virtual line on the ground as the first connection part moves along the guide hole in one direction from the other side of the guide hole. Regulator.
The method according to claim 1,

The base frame,

It is bent upward in the portion connected to the bed frame is formed higher than the bed frame,

The other side connection portion is hinged to the upper end of the base frame at a position higher than the bed frame, posture change adjustment device.
It is provided on both sides of the bed frame is a posture conversion control device for adjusting the angle of the back frame,

A base frame connected to the bed frame at heights corresponding to the bed frame on both sides of the bed frame;

A guide hole provided along the longitudinal direction of the base frame in the base frame;

One side is fixedly coupled to the end of the back frame, the other side is connected to the base frame in the guide hole, the other side is provided to be movable along the guide hole, there is provided a space in which the base frame is inserted A first connection part; And

It is provided while connecting the base frame and the first connecting portion inside the first connecting portion, one side is rotatably hinged to the upper edge of one side of the base frame in accordance with the movement of the first connecting portion, the other side is the first And a second connection part rotatably hinged according to the movement of the first connection part to the other upper end of the first connection part in the first connection part.
The method according to claim 6,

The guide hole,

And at least one section in which the height of the guide hole increases from one side to the other side of the base frame.
The method according to claim 6,

The posture change adjustment device,

Further comprising a guide roller provided to move along the guide hole in the guide hole,

And the first connection part is connected to the guide roller in the guide hole and moves along the guide hole.
The method according to claim 6,

The second connection portion,

It is bent in the other direction from one side of the second connecting portion, and provided with an inclination and the upper side of the base frame, the posture change control device.
It is provided on both sides of the bed frame is a posture conversion control device for adjusting the angle of the back frame,

A base frame connected to the bed frame;

A first guide hole provided along the longitudinal direction of the base frame in the base frame and having one end open at one side thereof;

A first connection part having one side connected to the back frame, the other side connected to the base frame at the guide hole, and the other side being movable along the first guide hole; And

One side is formed in parallel with the base frame, the other side includes a second connecting portion connected to the base frame rotatably around the hinge axis in accordance with the movement of the first guide hole of the first connecting portion.
In claim 10,

The first guide hole,

And at least one section in which the height of the first guide hole is increased from the other side of the base frame to one side.
The method according to claim 10,

The posture change adjustment device,

Further comprising a first guide roller provided to move along the first guide hole in the first guide hole,

And the first connection part is connected to the first guide roller in the first guide hole and moves along the first guide hole.
The method according to claim 12,

The second connection portion,

One side connection portion formed in parallel with the base frame, the second guide hole is formed along the longitudinal direction;

A second guide roller provided to move along the first guide hole and the second guide hole; And

It is bent at the other end of the one side connection portion extends inclined with the one side connection portion, and includes the other side connection portion hinged to the base frame,

The other side portion of the second guide hole is in communication with the first guide hole,

And the second guide roller is provided at a portion in communication with the first guide hole in the second guide hole.
The method according to claim 13,

The second connection portion,

In the lifting operation of the back frame, the first guide part moves along the first guide hole in one direction from the other side of the first guide hole, so that the second guide roller moves to the first guide hole and the second guide hole. Moving from one side to the other along the side, and when the second guide roller reaches the end of the second guide hole, the second guide roller is provided to be out of the open one end of the first guide hole, the posture change Regulator.
It is provided on both sides of the bed frame is a posture conversion control device for adjusting the angle of the back frame,

A base frame connected to the bed frame;

A plurality of guide rollers spaced apart from each other along a longitudinal direction of the base frame on one side of the base frame and rotatably provided on one side of the base frame; And

One side is connected to the backrest frame, extends in a shape corresponding to the base frame, and a guide portion is formed in contact with the guide roller while having a width corresponding to the diameter of the guide roller, the guide of the guide roller It includes a first connection portion provided to be movable by,

The guide roller rotates as the first connector moves, and the movement of the first connector is guided by the rotation of the guide roller.
The method according to claim 15,

The base frame,

At both ends of the base frame is formed with a falling curve toward the center of the base frame, the posture change control device.
The method according to claim 15,

The other direction of the base frame is formed having a width corresponding to the height of the guide roller,

One side direction of the base frame is formed to have a width corresponding to the backrest frame,

The width of the first connection portion, the posture change control device is formed to become wider in one direction from the other side.
The bed frame to which the posture change adjustment device of any one of Claims 1-17 is mounted.