JP2003159285A - Swinging configuration for floor part in bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a swinging configuration for a floor part of a bed which can reduce cost of manufacture and working time for assembling. <P>SOLUTION: This swinging configuration comprises a drive unit for back floor that produces ups and downs swinging of a back floor 11 for the top face side of support a frame 7A, a drive unit for knee part floor for producing and controlling ups and downs swinging operation for knee part floor 13, a common supporting members 22 for receiving and supporting a swinging core shaft of the back floor and the knee part floor at both right and left sides of seat section floor 12, respectively, and a support member 22 which is used also as a guide for transferring and guiding the swinging core shaft of the back floor 11 in a horizontal direction, so as to move the floor side end of a seat section of the back floor 11 to the side spaced apart from the seat section floor 12 with ups and downs swinging of the back floor. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing structure for a floor portion of a bed including a floor portion having at least four floors on the upper surface side of a support frame.

[0002]

2. Description of the Related Art In the above-mentioned bed, a back floor drive unit for swinging a horizontal back floor located on the front side of the floors constituting the floor to a standing posture around a rear horizontal axis. Is provided and the posture of the back floor is changed to an upright posture so that, for example, a meal or a television can be watched for a long time. Further, the front end of the leg floor located behind the knee floor is pivotally connected to the rear end of the knee floor located on the rear side of the floor constituting the floor, and A knee floor drive device is provided for changing the posture of the knee floor to the standing posture by swinging the knee floor around the horizontal axis on the front side. The floor of the legs and the floor are changed so that the legs can be lifted for rehabilitation. Then, with the standing swing of the back floor, the seat floor-side end of the back floor is configured to move to the side away from the seat floor, so that the lumbar spine or abdomen of the body is placed in the standing posture of the back floor. It is possible to avoid applying bending pressure due to the change in posture. Moreover, as disclosed in Japanese Patent Application Laid-Open No. 9-65952 previously proposed by the applicant of the present application, the seat part floor side end of the back part floor and the back part of the seat part floor are accompanied by the standing swing of the back part floor. A support member that fills a gap generated between the floor-side end portion and the floor-side end portion is provided so as to be retractable so that a part of the mattress or the mat does not enter the gap.

[0003]

According to the above-mentioned structure, an interlocking mechanism composed of a large number of members for moving the support member in and out in association with the ups and downs of the back floor is required, which causes an increase in cost. However, the work for assembling the interlocking mechanism is required, and there has been a problem that the work for assembling the entire bed takes a long time.

In view of the above situation, the present invention aims to provide a swinging structure of a floor portion of a bed which can solve the problems of high cost and long assembly work time. It is in.

[0005]

In order to solve the above-mentioned problems, the present invention comprises a floor portion having at least four floors along the front-rear direction on the upper surface side of a support frame, and the floor portion is configured. A knee located on the rear side of the floor constituting the floor, the back floor located on the front side of the floor being provided with a back floor drive device for oscillating and oscillating around a rear horizontal axis. A knee part that pivotally connects a front end part of a leg part floor located behind the knee part part floor to a rear end part of the knee part part part, and the knee part part is operable to oscillate and swing around a front horizontal axis. A swinging central shaft provided with a floor drive device and provided on both left and right sides of the seat floor located between the back floor and the knee floor toward the inside on the left and right sides of the back floor and knee floor, respectively. A common support member for receiving and supporting the back floor is provided, and the back floor is moved along with the ups and downs of the back floor. A guide portion that horizontally guides the swing center axis of the back floor to move the end portion of the seat floor side away from the seat floor is also used as the support member, and the upper surface of the support member is configured. Is set substantially at the same height as the upper surface of the back floor. Therefore, the back floor drive device can perform the oscillating operation of the back floor in the horizontal posture and the standing posture, and the knee floor drive device can perform the oscillating operation of the knee floor in the horizontal posture and the standing posture. can do. As described above, by changing the posture of the back floor to the standing posture, the back is raised, and by changing the posture of the knee floor to the standing posture, the thighs can be slightly raised and the knees can be raised. I am trying. By avoiding the bending pressure being applied to the lumbar vertebra or the abdomen of the body by moving the seat-floor-side end of the back floor to the side away from the seat floor with the ups and downs of the back floor. You can The standing posture of the back floor and the knee floor may be a posture parallel to the vertical direction with respect to the horizontal direction, or may be a posture inclined to the lying side with respect to the vertical direction. Moreover, even if the seat floor side end of the back floor is separated from the seat floor due to the ups and downs of the back floor and a gap is generated between the back floor and the seat floor, the upper surfaces of the pair of left and right support members are Bedding such as mattresses and mats can be received. In the case where the supporting member is composed of a common member that receives and supports the swing center shafts provided inwardly on the right and left sides of the back floor and the knee floor, respectively It is advantageous in assembly work compared to. Further, the support member also serves as a guide portion for horizontally moving and guiding the swing center axis of the back floor, which is more advantageous in terms of assembly work as compared with the case where they are separately provided.

The back-floor-side ends of the pair of left and right support members are arranged so as to project toward the back-floor side more than the back-floor-side ends of the seat floor, and the seats of the outer frame portions located on the left and right sides of the back-floor are disposed. The part-floor-side end is arranged so as to project toward the seat-floor side more than the other part of the back-floor, and the seat-floor-side end of the back-floor in the horizontal posture and the back-floor-side end of the seat-bottom in the horizontal posture A support member for filling a gap generated between the support member and the seat floor end portion of the back floor, the support member and a portion of the support frame on the front side of the support member, The swing center axis of the back floor is connected by an operation arm that raises and operates the back floor as it moves forward in the horizontal direction. As described above, by providing the protruding portion of the support member and the protruding portions of the outer frame portions located on the left and right sides of the back floor, a large amount of horizontal movement of the swing center axis of the back floor can be obtained. Even though it is possible, it is possible to reduce the gap generated between the back floor and the back floor by separating the back floor end of the back floor from the back floor due to the ups and downs of the back floor. Further, a support member for filling a gap generated between the seat floor side end of the horizontal posture back floor and the back floor side end of the horizontal posture back floor is provided with a support member on the back floor floor side. By providing the end portion, the support member can receive bedding such as a bedding or a mat. Moreover, by connecting the support member and the support frame with the operation arm, the swing center axis of the back floor is water, and the swing center axis of the water back floor moves the back floor along with the movement to the front side in the horizontal direction. It can be started up.

When the posture of the back floor is changed to a horizontal posture,
By providing a flexible part for preventing the posture change to the lower side of the back floor by sandwiching another object between the back floor and the support frame, for example, a hand of the back floor and the support frame is provided. Even if it is sandwiched between them, the back floor is not forcibly oscillated to the horizontal posture side, and it is possible to avoid the injury of the hand. When the pinching is released, the weight of the back floor or the weight of the back floor and a human body or the like applied to the back floor can be automatically changed to a horizontal posture.

When changing the posture of the knee floor to a horizontal posture,
By providing a flexible portion for preventing a posture change to the lower side of the knee floor by sandwiching another object between the knee floor and the support frame, for example, a hand is used as a knee floor. Even if it is sandwiched between the support frames, the knee floor is not forcibly oscillated to the horizontal posture side, and it is possible to avoid the injury of the hand. When the pinching is released, it is possible to automatically change to a horizontal posture by the weight of the knee floor or the weight of the knee floor and a human body or the like applied to the knee floor.

A remote control for operating the drive device for the back floor and the drive device for the knee floor is provided, and a removable insertion portion for inserting a plug provided at the tip of the cord of the remote control is provided in the support member. It is provided at the lower end of the so that it can be inserted from the left and right.
By quickly inserting the plug into the insertion portion from the left and right as described above and then operating the remote control, the back floor and the knee floor can be rocked as desired. Moreover, by providing the insertion portion at the lower end of the sturdy support member, it is possible to make it difficult for other objects to contact the insertion portion. The insertion part is connected to a control device such as a control board for controlling the drive of the back floor drive device and the knee floor drive device, and an output signal from a remote control is input to the control device and the back portion is The floor and knee floor will be rocked.

A mounting portion for mounting one or a plurality of locking members for locking and holding the cord from the plug to the remote control so as not to hang downward is provided at the lower end of the support member. . By locking and holding the cord in the locking member provided in the mounting portion as described above, it is possible to prevent the cord from hanging on the floor surface or the like.

[0011]

1 to 5, there is shown a bed, which includes a pair of left and right front and rear frames 1 and 1 each having casters 2 at front and rear ends, and two front and rear portions of these front and rear frames. A fixed frame 4 including left and right frames 3 and 3 that connect the inner surfaces of the left and right sides in the left-right direction, and a pair of front and rear link mechanisms 5 and 5 and a retractable electric motor 6 that can move up and down freely. A pair of left and right supporting frames 7A, 7A supported and these supporting frames 7
A pair of front and rear connecting frames 7B and 7B welded to the front and rear ends of A and 7A, a headboard 8 attached to the front connecting frame 7B, and the supporting frames 7A and 7A.
A floor portion 9 supported on the upper surface side of the above, and a foot board 10 attached to the rear side connecting frame 7B.

The floor 9 is arranged in this order from the front side in the front-rear direction (headboard 8 side) to the back floor 11, the seat floor 12, the knee floor 13, and the leg floor 14. The three back floors 1
1, the knee floor 13 and the leg floor 14 are movable as described later, and only the seat floor 12 is fixed. Holding members 16 for inserting and holding the side rails 15 are attached to the left and right sides of the back floor 11 and the leg floor 14, respectively.
By moving integrally with the movement of the body, the body is guided so as not to move left and right and fall from the bed.
Can be omitted.

As shown in FIG. 2, the back floor 11 has a substantially inverted U-shaped (or substantially arched) metal outer frame 11A and an outer frame 11A having an open side closed. A connecting frame 11B made of metal for configuring
The frame 11A, 11B is composed of a large number of metal wire rods 11C provided at predetermined intervals in the vertical and horizontal directions. On the outer surface (rear surface) of the connection frame 11B,
Seat floor end of the back floor 11 in a horizontal posture via the pair of left and right brackets 33, 33 (outer surface of the connecting frame 11B)
And the back floor end of the seat floor 12 in a horizontal position (front frame 1
A support member 34 for filling a gap generated between the front (outer) surface of 2A is attached. The connecting position of the connecting frame 11B with respect to the outer frame 11A is set to a position closer to the front side from both ends of the outer frame 11A, and both ends of the outer frame 11A with respect to the connecting frame 11B. The outer frame 11A is provided with an extending portion 11D protruding rearward. or,
The seat floor 12 includes a pair of front and rear frames 12A, 1A.
2A and a left and right pair of left and right frames 12B, 12B, and an outer frame portion, and a large number of metal wire rods 12C provided at predetermined intervals in these frames. The connecting positions of both end portions of the front and rear frames 12A and 12A with respect to the left and right frames 12B and 12B are set to positions that are close to a set distance from the front and rear ends of the left and right frames, respectively, and the front and rear ends of the left and right frames 12B and 12B. Has extended portions 12D, 12D protruding in the front-rear direction with respect to the front and rear frames 12A, 12A in the left and right frames 12B, 12B, respectively. In addition, the knee floor 13 has a substantially U-shaped metal outer frame 13A and the outer frame 1A.
3A is composed of a metal connecting frame 13B for closing the open side to form an outer frame, and a large number of metal wire rods 13C provided on these frames 13A, 13B at predetermined intervals in the vertical and horizontal directions. There is. The outer frame 13A
The connecting position of the connecting frame 13B with respect to the connecting frame 13B is set at a position closer to the front side from both ends of the outer frame 13A, and the connecting frame 13B is connected to the outer frame 1
The outer frame 13A is provided with the extending portions 13D protruding from both ends of 3A. By providing the extending portions 11D, 12D, and 13D as described above, the extending portions are made to overlap each other in the horizontal direction. In addition, the leg floor 14 has a substantially rectangular outer frame 14A and an outer frame 14A.
And a large number of metal wire rods 14C provided at predetermined intervals in the vertical and horizontal directions. The specific configuration of each of the floors 11 to 14 is not limited to that shown in FIG.

As shown in FIGS. 1 and 3 to 5, in order to switch the back floor 11 between an upright posture in which the back floor 11 is raised and a use posture in which the back floor 11 is returned to a horizontal posture by performing an oscillating operation. Is provided with a back floor driving device 17. The back floor drive mechanism 17 comprises a connecting frame 11B that constitutes the back floor 11 for swinging the back floor 11.
And a retractable back floor electric motor 19 having a rod 19A, one end of which is attached to the other end of the operation arm 18. ing. As shown in FIG. 7, the pins 20 and 20 (only one of which is shown) forming the swing center axis of the back floor 11 are internally provided at both ends of the outer frame 11A forming the back floor 11 via caps 21. So that the pins 20, 20 are movable in the front-rear direction substantially in the center of the guide rails 22, 22 that are bolted to the outer surfaces of the left and right frames 12B, 12B that form the seat floor 12. It fits inside. Further, the support member 34 and a portion of the support frames 7A, 7A on the front side of the support member 34 (a portion located directly below the center position of the back floor 11 in the front-rear direction) are connected to the back floor 1
The swinging central axis of 1, i.e., the pins 20 and 20 are connected by a pair of left and right plate-like operation arms 43 and 43 for raising and operating the back floor 11 with the movement to the front side in the horizontal direction. . More specifically, the rear end of each operation arm 43 is fixed to the rotatable support member 34 by welding or the like,
Moreover, the front end is rotatably attached to the inner surface of the support frame 7A, and the back arms 11 can be raised by the operation arms 43, 43 as the pins 20, 20 move to the front side in the horizontal direction. You can do it. Although the support member 34 is configured to be rotatable, the support member 34 may be non-rotatably attached, and one end of the operation arm 43 may be attached to the support member 34 in a state of allowing relative rotation. Further, by providing the pair of left and right operation arms 43, 43, the back floor 11
Can be started up and operated stably, but single (1
Two) operation arm. The operation arm 4
The shapes of 3, 43 are not limited to those shown in the figure. Therefore, by extending the rod 19A of the electric motor 19, the back floor 11 is moved while the pins 20 and 20 are moved forward with respect to the guide rails 22 and 22.
The operating arms 43, 43 to a standing posture (the maximum is set to about 80 degrees in the chain double-dashed line in FIG. 1, but it can be set any number of times), so that the lumbar vertebra or abdomen of the body Back floor 1
Therefore, it is possible to avoid applying bending pressure due to the posture change to the standing posture of No. 1. In addition, by shortening the rod 19A of the electric motor 19, it is possible to change the posture of the back floor 11 to the use posture while moving the pins 20 and 20 rearward with respect to the guide rails 22 and 22. There is.

Like the back floor 11, the knee floor 13 is also provided with a knee floor drive device 23 for switching between an upright standing posture and a use posture restored to a horizontal posture. The knee floor drive mechanism 23 has a knee floor operation arm whose one end is fixed to the back surface (lower surface) of a connecting frame 13B constituting the knee floor 13 for swinging the knee floor 13. 24 and a retractable knee floor electric motor 25 having a rod 25A having one end attached to the other end of the operation arm 24. As shown in FIG. 7, like the back floor 11, the pins 26, 26 (only one of which is shown in the figure) constituting the swing center axis of the knee floor 13 are used to form the outer frame of the knee floor 13. Both ends of the frame 13A are projected inward through the caps 27, and the pins 26, 26 are fitted in the rear ends of the guide rails 22, 22 by a cover member 30 described later in a non-movable state. Therefore, when the rod 25A of the electric motor 25 is extended, the knee floor 13 is erected with the pins 26, 26 as the swing center (up to about 45 degrees in the two-dot chain line in FIG. 1, (Although it may be set any number of times), the leg floor 14 is raised to a substantially horizontal posture so that the knee floor 13 and the leg floor 14 have a substantially V shape in a side view. I have to. At the rear end of the leg floor 14, as shown in FIG. 4, one end of the leg 29 is freely lockable at an arbitrary locking portion 28A of the locking member 28 fixed to the support frames 7A, 7A. The other end is pivotally connected, and the posture of the leg floor 14 (angle with respect to the horizontal) can be changed by changing the locking position of the leg 29 with respect to the locking portion of the locking member 28. I am trying. Further, by shortening the rod 25A of the electric motor 25, it is possible to change the posture of the knee floor 13 to the use posture with the pins 26, 26 as the swing center.

As shown in FIG. 7, each of the guide rails 22 is a long plate-shaped aluminum plate which is screwed to the outer surface of the left and right frames 12B and 12B and has semi-arcuate portions with angled front and rear ends. A main body portion 22A made of steel, and a pair of long and short rail portions 22B and 22C which are integrally formed on the outer surface side of the main body portion 22A and open at opposite ends in the front-rear direction. It consists of And
The pins 20, 26 of the back floor 11 and the knee floor 13 are inserted from either the upper side or the lower side between the ends of a pair of long and short rail portions 22B, 22C of the guide rail 22 thus formed. After that, the pins 20 and 26 can be fitted and supported by moving them in the front-rear direction. Thus, the guide rail 22 constitutes a common support member for internally fitting and supporting the pins 20 and 26 of the back floor 11 and the knee floor 13, and the upper surface of the guide rail 22 covers all floors 11 to 11. It is set at the same height as the upper surface of 14 (may be slightly different). Therefore, even when the back floor 11 moves to the side away from the seat floor 12 (front side), it is possible to reliably support the mattress or the mat on the upper surfaces of the guide rails 22 and 22 and the left and right frames 12B and 12B. I am able to do it. Here, the guide rails 22 and 22 are connected to the left and right frames 12.
The guide rails 22 and 22 and the left and right frames 12B and 12 are integrated with the outer surfaces of B and 12B by screws.
By configuring B and one member, it is possible to reduce the number of members. Reference numeral 30 shown in FIG. 7 is a cover member having a receiving portion 30A for filling the gap 22S between the end portions of the rail portions 22B and 22C and for receiving the pin 26 and fixing the pin 26 immovably. Yes, a pair of upper and lower locking pieces 30B provided on the cover member 30,
30B is a pair of upper and lower through holes 2 formed in the main body 22A.
The cover member 30 can be fixed to the guide rail 22 by inserting and locking it in 2K and 22K. By supporting the pin 26 with the cover member 30, there is an advantage that the pin 26 can be rotated without rattling, but it can be omitted.

As shown in FIG. 6 (a), a long hole 18A is formed in the connecting portion of the rod 19A of the electric motor 19 of the operation arm 18, and the posture of the back floor 11 is changed to a horizontal posture. Sometimes, the back floor 11 and the support frame 7A
The elongated hole 18A functions as a flexible portion for preventing the posture of the back floor 11 from being changed downward by, for example, sandwiching a hand (not shown) between and. That is, as shown in FIG. 6A, when the back floor 11 is being rocked downward, the back floor 11 is indicated by the two-dot chain line in the figure.
The rod 19A of the electric motor 19 will be shortened even if another object such as a hand is sandwiched between the support frame 7A and the support frame 7A (not shown), but the tip of the rod 19A, that is, the connecting portion with the operation arm 18. The operation arm 18 is not operated only by moving the bolt 31 which is to the rear end of the elongated hole 18A, and the back floor 11 can maintain the above position. When the other object sandwiched is released, the back floor 11 descends to a horizontal posture due to its own weight or the like (shown by a solid line in FIG. 6A). Although the length of the long hole 18A is set so that the back floor 11 acts from about 20 degrees from the horizontal posture, the length of the long hole 18A can be freely changed.
In addition, here, it is advantageous in terms of cost to configure the interchanged portion by the elongated hole 18A, but for example, the operation of the electric motor 19 may be stopped by applying a certain load. The specific configuration of the interchange section can be freely changed.

The long hole 2 is also formed in the connecting portion of the rod 25A of the electric motor 25 of the other operating arm 24.
4A is formed, and when the posture of the knee floor 13 is changed to a horizontal posture, for example, a hand (not shown) is sandwiched between the knee floor 13 and the support frame 7A, so that the knee floor 1
The elongated hole 24A functions as a interchangeable portion for preventing the posture of 3 from changing to the lower side. That is,
As shown in FIG. 6 (b), when the knee floor 13 is being swung downward, a hand or the like is placed between the knee floor 13 and the support frame 7A (not shown) along the two-dot chain line in the figure. Even if other things get caught,
Although the rod 25A of the electric motor 25 is shortened, the operation arm 24 is not operated only by moving the tip of the rod 25A, that is, the bolt 32, which is a connecting portion with the operation arm 24, to the rear end of the elongated hole 24A. The knee floor 13 can maintain the above position. When the other object sandwiched is released, the knee floor 13 descends to a horizontal posture due to its own weight or the like (shown by a solid line in FIG. 6B). Although the length of the long hole 24A is set so that the knee floor 13 acts from about 20 degrees from the horizontal posture, the length of the long hole 24A can be freely changed. Further, here, by forming the accommodation portion by the long hole 24A, it is advantageous in terms of cost, but for example, the operation of the electric motor 25 may be stopped by applying a certain load. The specific configuration of the interchange section can be freely changed.

The guide rails 22 and 22 are shown in FIGS.
0 (both left and right are configured in the same manner in the figure, but only one may be configured). That is, at the rear side of the lower end of the guide rail 22,
The remote control 35 shown in FIG. 10 is integrally provided with a holding portion 39 for holding a plug portion 38 for inserting and removing a plug 37 provided at the tip of a curl cord (may be a straight one) 36 from the left and right directions. Yes (separate object may be attached). The insertion portion 38 instructs the electric motor 19 of the back floor drive device 17, the electric motor 25 of the knee floor drive device 23, and the lifting electric motor 6 (which may be omitted) to drive or stop driving. It is electrically connected to a control device (not shown) for outputting a signal, and has a plug 37 in the insertion portion 38.
The remote control 35 by electrically connecting the control device to the remote control 35.
By operating, the support frame 7A can be moved up and down, and the back floor 11 or the knee floor 13 can be rocked. In addition, the curl cord 3 of the remote control 35 extends from the holding portion 39 to the front side at an intermediate portion of the lower end of the guide rail 22 in the front-rear direction.
6 for locking and holding so as not to hang downward (3 in FIG. 9, but 1 or 2 or 4
S-shaped hook 4 as a locking member
Long plate-shaped mounting portion 41 for mounting 0
Are integrated (a separate one may be attached).
Therefore, three holes are formed in the long hole 41A formed in the mounting portion 41 in the front-rear direction.
After inserting the individual hooks 40, the curl cords 36 are retained by the hooks 40. By forming the long hole 41A as described above, the long hole 41A
There is an advantage that the hook 40 can be inserted at any position of the, but a plurality of holes may be used. At the tip of the remote control 35, a hook portion 42 is provided,
The remote control 35 can be held by locking the hook portion 42 to the side rail 15, but it may be omitted. Other configurations not shown in FIGS. 8 to 10 are the same as those described above, and therefore, the same reference numerals are given and the description thereof is omitted.

[0020]

According to the first aspect of the present invention, the seat floor side end of the back floor is moved to the side away from the seat floor as the back floor undulates and swings. Although it is possible to avoid applying bending pressure to the abdomen, it is possible to receive bedding such as a bedding and a mat on the upper surfaces of the pair of left and right support members, and a conventional support member and its interlocking mechanism. It is possible to provide a swinging structure of the floor portion of the bed, which can eliminate the need for the above, increase in cost, and long assembly time. In addition, when the supporting member is composed of a common member that receives and supports the swing center shafts provided inwardly on the left and right sides of the back floor and the knee floor, respectively Compared to this, it is advantageous in assembly work. Further, the support member also serves as a guide portion for horizontally moving and guiding the swing center axis of the back floor, which is more advantageous in terms of assembly work than in the case where they are separately provided.

According to the second aspect of the present invention, by providing the projecting portion of the support member and the projecting portions of the outer frame portions located on the left and right sides of the back floor, the swing center axis of the back floor in the horizontal direction is provided. Although a large amount of movement can be taken, the gap between the back floor and the back floor that separates the back floor from the seat floor side edge of the back floor due to the ups and downs of the back floor Therefore, it is possible to prevent the bedclothes such as the mattress and the mat from partially entering the gap. Further, a support member for filling a gap generated between the seat floor side end of the horizontal back floor and the back floor side end of the horizontal back floor is provided with a support member for the back floor. By providing it to the support member, the support member can receive the bedding such as the mattress and the mat, and the user can use it more comfortably. Moreover, since the support member also serves as a mounting member for mounting one end of the operation arm for raising and raising the back floor, the number of members can be reduced, which is advantageous in terms of cost.

According to the third aspect of the present invention, when the posture of the back floor is changed to the horizontal posture, the posture change to the lower side of the back floor is prevented by another object being sandwiched between the back floor and the support frame. By providing the interchangeable portion for preventing the back floor from being forcibly rocked to the horizontal posture side even when the hand is sandwiched between the back floor and the support frame, the hand is injured. It is possible to avoid a situation where the user sleeps, and the bed can be comfortably used.

According to the fourth aspect of the present invention, when the posture of the knee floor is changed to the horizontal posture, another object is sandwiched between the knee floor and the support frame so that the posture of the knee floor is downward. By providing a flexible portion for preventing the change, for example, even when a hand is sandwiched between the knee floor and the support frame, the knee floor is not forcibly rocked to the horizontal posture side. In addition, it is possible to avoid injury to the hand, and the bed can be comfortably used.

According to the fifth aspect of the present invention, the back floor and the knee floor can be rocked as desired by remote control simply by inserting the plugs into the insertion portions from the left and right directions. Moreover, by providing the insertion portion at the lower end of the sturdy support member, it is possible to make it difficult for other objects to contact the insertion portion, which is advantageous in terms of durability.

According to the invention of claim 6, the cord is locked and held by the locking member provided in the mounting portion,
It is possible to prevent the cord from hanging on the floor surface or the like, and for example, to prevent the cord from being caught by the frame or the like and being cut when the cord is lifted or lowered.

[Brief description of drawings]

FIG. 1 is a side view showing an entire bed.

FIG. 2 is a plan view showing the entire bed.

FIG. 3 is a partially cutaway vertical side view of the bed with the back floor slightly raised.

FIG. 4 is a partially cutaway vertical side view of the bed in which the posture of the knee floor and the leg floor is changed to a V shape.

FIG. 5 is a perspective view in which a part of the bed is omitted, showing a state in which the back floor is raised.

FIG. 6 (a) is an explanatory view showing a downward swinging state of the back floor,
(B) is explanatory drawing which shows the downward rocking | fluctuation state of a knee part floor.

FIG. 7 is an exploded perspective view showing a state immediately before the swing center shaft is fitted in the guide rail.

FIG. 8 is a perspective view of another guide rail.

FIG. 9 is a perspective view showing a state immediately before a plug is inserted into an insertion portion provided at the lower end of the guide rail.

FIG. 10 is a perspective view of a bed in which a remote control is locked and held by a side rail.

[Explanation of symbols]

1 Front and rear frame 2 Casters 3 Left and right frame 4 Fixed frame 5 Link mechanism 6 Electric motor 7A Support frame 7B Connection frame 8 headboard 9 floor 10 Footboard 11 Back floor 11A outer frame 11B connecting frame 11C wire rod 11D extension part 12 seat floor 12A front and rear frame 12B left and right frame 12C wire rod 12D extension 13 Knee floor 13A outer frame 13B connecting frame 13C wire rod 13D extension part 14 leg floor 14A outer frame 14C wire rod 15 side rail 16 Holding member 17 Back floor drive device 18 Operation arm 18A long hole 19 Electric motor 19A Rod 20 pin (swing center axis) 21 cap 22 Guide rail (support member) 22A Main body 22B Long rail 22C Short rail part 22K Through hole 22S Gap 23 Drive device for knee floor 24 Operation Arm 24A Long Hole 25 electric motor 25A rod 26 pin (swing center axis) 27 cap 28 Locking member 29 Leg 30 cover member 30A receiving portion 30B Locking piece 31, 32 bolt 33 bracket 34 support member 35 Remote control 36 curl cord 37 plug 38 insertion part 40 hook (locking member) 41 mounting part 41A long hole 42 Hook 43 Operation arm

Claims (6)

[Claims] 1. A support frame is provided with a floor portion including at least four floors along the front-rear direction on the upper surface side, and a back floor located on the front side of the floors forming the floor portion is located on the rear side. A drive device for a back floor for undulating and swinging around a horizontal axis is provided, and a rear part of the knee floor located on the rear side of the floor constituting the floor is located behind the knee floor. Provided is a knee floor drive device for pivotally connecting the front ends of the leg floors and operating the knee floor so that it can oscillate and swing around a front horizontal axis.
For receiving and supporting the swing center axes respectively provided on the left and right sides of the seat floor located between the back floor and the knee floor, respectively on the left and right sides of the back floor and the knee floor toward the inside, respectively. A common supporting member is provided, and the swing center axis of the back floor is horizontally moved to move the seat floor side end of the back floor to the side away from the seat floor when the back floor rises and falls. A guide portion for moving and guiding in the direction is also used as the support member,
A swing structure of a floor portion of a bed, wherein an upper surface of the support member is set to be substantially level with an upper surface of the back floor. 2. An outer frame portion located on both left and right sides of the back floor, wherein the back floor side ends of the pair of left and right support members are arranged so as to project toward the back floor more than the back floor side ends of the seat floor. The end of the seat on the floor side of the back floor of the back posture of the horizontal posture and the back side of the seat floor of the horizontal posture. A support member for filling a gap generated between the support member and a side end portion is provided at a seat portion floor side end portion of the back floor, and the support member and a portion of the support frame on the front side of the support member. 2. The swing structure for the floor portion of the bed according to claim 1, wherein the swing center axis of the back floor is connected by an operation arm that raises and operates the back floor as the swing center axis moves forward in the horizontal direction. . 3. When the posture of the back floor is changed to a horizontal posture, another object is sandwiched between the back floor and the support frame to prevent the posture of the back floor from being changed downward. The swing structure of the floor portion of the bed according to claim 1 or 2, comprising a flexible portion. 4. When the posture of the knee floor is changed to a horizontal posture, another object is sandwiched between the knee floor and the support frame to prevent the posture of the knee floor from being changed downward. The swing structure for the floor portion of the bed according to claim 1 or 2, further comprising a flexible portion. 5. A remote control for operating the drive device for the back floor and the drive device for the knee floor is provided, and a removable insertion portion for inserting a plug provided at a tip of a cord of the remote control is provided. The swing structure of the floor portion of the bed according to claim 1, wherein the support member is provided at the lower end of the support member so as to be inserted from the left and right directions. 6. A lower end of the support member is provided with a mounting portion for mounting one or a plurality of locking members for locking and holding the cord from the plug to the remote control so as not to hang downward. The swing structure of the floor portion of the bed according to claim 5.