JPH0852050A - Raising and laying mechanism for floor part in bed - Google Patents

Abstract

PURPOSE:To provide a raising and laying mechanism for floor part in bed in which a leg floor can be raised by the hands as occasion demands, and the raising and laying operation of the leg floor is smoothed since no excessive force as twisting act as in a conventional raising and laying mechanism in which an operating beam top end is connected to a push-up arm protruded on a floor part lower surface. CONSTITUTION:An actuator 21 having an operating beam 21a capable of protruding and recessing is mounted on the lower part a body frame 6, a rolling roller 24 is installed on the top end of the operating beam 21a, and a guide rail 18 is laid on the lower surface of a leg floor 13 mounted on the body frame 6 in such a manner as to be capable of rising and falling, so that the lower 24 surface of the guide rail 18 supported on the rolling roller 24 on the top end part of the operating beam 21a in such a manner as to be capable of sliding. The guide rail 18 is formed to increase the vertical width toward the top end side of the raised and lowered leg floor 13, so that a guide surface 19 the lower surface of which is lowered toward the top end side is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an undulating mechanism for a floor portion of a bed in which the floor portion is undulated by a drive source such as a motor, and more specifically, it is undulated by the drive source as described above. The present invention relates to an undulating mechanism of a floor portion of a bed, which allows the floor portion to be lifted by hand as needed.

[0002]

2. Description of the Related Art Normally, the undulating mechanism of the floor of a bed is
For example, as shown in FIG. 8, an actuator b having an operating shaft a that advances and retreats by driving a built-in motor as a drive source is provided below the bed, and is rotatably provided at the tip of the operating shaft a. Push-up arm d protruding from the bottom surface of the provided floor c
And the push-up arm d on the lower surface of the floor portion c is rotated by advancing / retreating the operating shaft a to undulate the floor portion c.

However, even if it is necessary to raise the floor suddenly, in the case of the conventional hoisting mechanism as described above, the floor c and the operating rod a of the actuator b are always connected. Therefore, it is not possible to manually lift only the floor c without driving the actuator b. Further, in the structure in which the push-up arm d of the actuator b is turned to push up the floor portion c in this way, the push-up arm d is turned by the actuating rod a so that the push-up arm d is turned, so that it is impossible for each part. Power tends to be involved.

[0004]

SUMMARY OF THE INVENTION In view of the above points, the present invention enables the bed portion of the bed, which is undulated by the drive source, to be lifted by hand as necessary.
It is intended to provide an undulating mechanism for a floor portion that allows the floor portion to be smoothly undulated.

[0005]

In order to achieve the above-mentioned object, the floor undulating mechanism of the bed according to the present invention is provided with an operating rod which is moved forward and backward by a drive source such as a motor under the floor of the bed. , A slider is provided at the tip of this operating rod, and a guide rail is provided on the lower surface of the floor that is undulated, and the slider at the distal end of the operating rod slidably supports the lower surface of the guide rail on the lower surface of the floor. The lower surface of the guide rail forms a guide surface that becomes lower toward the tip of the undulating floor. It is preferable that a rotary roller is used as the slider at the tip of the operating rod, and the rotary roller rolls along the guide surface of the lower surface of the guide rail on the lower surface of the floor. Furthermore,
A pair of left and right sliders are provided at the tip of the operating rod, and a pair of left and right guide rails are provided on the lower surface of the floor.
It is preferable that each of the sliders at the distal end portions of the two operating shafts is configured to support the guide surfaces of the left and right guide rail lower surfaces of the floor lower surface.

[0006]

The floor undulating mechanism in the bed according to the present invention is
With the above structure, when the drive source is driven to project the operating rod, the slider provided at the tip of the operating rod advances along the guide surface of the lower surface of the guide rail provided on the lower surface of the floor. Then, by moving the guide rail from the high position of the guide surface to the low position while pushing it up, the floor portion gets up.
When the drive source is reversed and the operating rod is retracted, the slider at the tip of the operating rod at the lower position of the guide surface on the lower surface of the guide rail moves along the guide surface to the higher position while lowering the guide rail. The floor falls. Therefore,
In the case of the leg lowering mechanism, the horizontal floor is configured to be supported on the slider of the protruding end of the operating rod at a lower position on the lower end of the guide surface of the guide rail on the lower surface of the floor. If this is done, by driving the drive source from this state and retracting the operating rod, the slider can be retracted along the guide surface of the guide rail and moved to a higher position to lower the leg. If the operating rod is projected again from the lowered state, the slider can be moved to the lower position of the guide surface of the guide rail and the leg floor can be returned to the original horizontal state. Also, in the case of the back-raising mechanism, the back bed in a horizontal state should be supported on the slider at the tip of the retracted operating rod at a high position on the base end side of the guide surface of the guide rail on the bottom of the back bed. With this configuration, if the drive source is driven from this state and the operating rod is projected, the slider can be moved back to a lower position along the guide surface of the guide rail to raise the back. When the operating rod is retracted from the back-raised state, the slider moves up to a higher position on the guide surface while pushing up the guide rail, whereby the back floor can be returned to the original horizontal state.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The floor undulation mechanism according to the present invention will be described in more detail below with reference to the embodiments shown in the drawings.

FIG. 1 is a perspective view of a sofa bed 1 showing an example of a bed adopting a floor undulating mechanism according to the present invention, and FIG. 2 is an exploded perspective view thereof. In this sofa bed 1, a main body frame 6 is movably mounted on a leg base 2 provided with casters 3 via front and rear link mechanisms 4 and 5. The link mechanisms 4 and 5 are connected to each other by a connecting pipe 7, and the tip end of an actuating rod 8a of an actuator 8 attached to the main body frame 6 is connected to an actuating arm 9 projecting from the front link mechanism 4. However, the main body frame 6 is configured to move up and down by moving the operating rod 8a forward and backward and simultaneously rotating the front and rear link mechanisms 4 and 5.

A headboard 10 is attached to the front end of the main body frame 6, and a back floor 11, a seat floor 12, and a leg floor 13 are rotatably attached on the main body frame 6, respectively. The mattress M is placed on these floors for use. The footboard 14 is attached to the tip side of the leg floor 13 so as to be undulated with the leg floor 13. Furthermore, the body frame 6
Side fences S for assistance can be attached to the left and right of the.

As shown in FIG. 4, the back floor 11 has its rear end pivotally attached to the main body frame 6 so as to be rotatable, and is attached to a back pushing upper arm 15 obliquely projecting on the lower surface thereof. The operating rod 16a of the lifting actuator 16 is connected so that it can move back and forth. A pair of left and right support arms 17 and 17 are provided so as to project rearward on both side portions on the rotating end side of the back floor 11, and the rear ends of the support arms 17 and 17 are attached to the main body frame 6. A front end portion of a seat 12 pivotally rotatably supported is supported, and the seat 12 is configured to rotate downward in conjunction with raising the back of the back 11.

As shown in FIGS. 5 and 6, the leg floor 13 has its front end pivotally attached to the main body frame 6 so as to be rotatable, and is fixed to the left and right of the tip side of the leg floor 13. The footboard 14 is attached to the attachment fittings 20, 20. Further, a pair of left and right guide rails 18, 18 extending forward and backward are provided on the lower surface of the leg floor 13 so as to project downward. The guide rails 18 and 18 are formed so that the vertical width increases toward the tip side of the leg floor 13,
The lower surface thereof constitutes a guide surface 19 which becomes lower toward the tip side. On the other hand, a leg lowering actuator 21 having a built-in motor as a drive source is attached to the body frame 6 in a rearward direction.
A substantially T-shaped extruding member 22 is connected and fixed to the tip end of the movable operating rod 21a of the first No. 1, and an intermediate portion of the extruding member 22 slides on a guide member 62 provided on the lower surface of the horizontal pipe 61 of the main body frame 6. A roller 63, which is supported movably, is attached to the upper portion of the guide member 62 so as to roll on the upper surface of the pushing member 22 to assist the forward / backward movement of the pushing member 22. Then, the horizontal axis 23 at the tip of the pushing member 22
A pair of left and right rolling rollers 24, 24 project from both end portions of the front of the rail, and left and right guide rails 18, 18 provided on the lower surface of the leg floor 13 are supported on the rolling rollers 24, 24, respectively. Together with the operating rod 2 of the actuator 21
By moving 1a back and forth, left and right rolling rollers 24, 24
Are configured to roll along the left and right guide rails 18 on the lower surface of the leg floor 13 and the respective guide surfaces 19, 19 on the lower surface of the leg rail 13. Further, the horizontal pipe 6 of the body frame 6
1, a leg floor receiving pipe 64 is provided so as to project obliquely downward.

In the undulating mechanism of the leg floor 13 as described above, when the leg floor 13 is in a normal horizontal state, the operating rod 21a of the leg raising actuator 21 is projected and connected to the tip of the operating rod 21a. The pair of left and right rolling rollers 24, 24 of the extruding member 22 are provided on the lower surface of the leg floor 13 for the guide rail 1.
Lower end portion 1 on the leading end side of the guide surface 19 on the lower surface of 8, 18
The leg floor 13 is supported in a horizontal state by engaging with 9a.
From this state, the operating rod 21
When a is retracted, the rolling roller 24 at the tip of the pushing member 22
Is the inclined portion 1 on the guide surface 19 below the guide rail 18.
9b, it rolls toward the higher part 19c of the guide surface 19, and at the same time, the leg floor 13 is provided at the rear end of the main body frame 6
It is pivoted downward about the pivot shaft 13a and is in a leg lowered state, and is supported on the leg floor receiving pipe 64. Further, when the operating rod 21a of the leg raising actuator 21 is projected from this leg lowered state, the rolling roller at the tip of the pushing member 22 engaged with the upper portion 19c of the guide surface 19 on the lower surface of the guide rail 18 is rolled. 24 pushes up the guide rail 18 and along the inclined portion 19b, the higher part 1 of the guide surface 19
By rolling toward 9c, the floor 13 rotates upward about the rotation shaft 13a and returns to the original horizontal state. Further, if the operating rod 21a of the actuator 21 is stopped at an appropriate position, the leg floor 13 can be fixed in a state of being lowered to an arbitrary angle.

According to the hoisting and lowering mechanism of the footbed 13 according to the present invention as described above, the footbed 13 is placed on the rolling roller 24 of the pushing member 22 connected to the tip of the operating rod 21a of the actuator 21.
Since the guide rail 18 provided on the lower surface is supported and the leg floor 13 is raised and lowered by advancing and retracting the operating rod 21a, the operating rod of the actuator rotates the push-up arm projecting on the lower surface of the floor. Unlike the conventional undulating mechanism for the floor portion, the force for twisting each portion does not act, and the undulating operation of the leg floor 13 is performed more smoothly. Moreover, the leg floor 13 is not connected and fixed to the actuating rod 21a of the actuator 21, but on the rolling roller 24 as a slider provided on the push-out member 22 at the tip of the actuating rod 21a. Since 18 is placed, the leg floor 13 can be lifted by hand if necessary.

Although the above embodiment shows the case where the undulating mechanism of the present invention is adopted only for the leg floor 13, the back floor 11
Can have a similar undulation mechanism. In the case of this back-raising mechanism as well, a guide rail is provided on the lower surface of the back floor 11 in the same manner as described above. However, in the case of raising the back floor 11, the difference from the case of lowering the legs is as shown in FIG. When the floor 11 is in the horizontal state, the slider 24 'at the tip of the operating rod in the retracted state is configured to support a high position on the base end side of the guide surface of the guide rail 19' on the lower surface of the back floor 11. Therefore, if the actuator 21 is driven from this state to cause the operating rod 21a to project, the slider 24 '
Can raise the back by pushing up the guide rail 19 'and moving to a lower position on the tip side of the guide surface, and if the operating rod is retracted from this back raised state,
The back floor 11 returns to its original horizontal state by moving the slider to a higher position on the guide surface of the guide rail.
Further, in the embodiment, the actuator incorporating the motor as the driving source is illustrated, but a manually rotating crankshaft or the like may be used.

[0015]

As described above, the undulating mechanism of the floor portion of the bed according to the present invention is configured such that the guide rail provided on the lower surface of the floor portion is supported on the slider provided at the tip of the operating rod for advancing and retracting. By advancing and retracting the operating rod, the floor can be raised and lowered, so that the floor can be lifted by hand as necessary. Moreover, unlike the conventional hoisting mechanism that connects the tip of the operating rod to the push-up arm that projects from the bottom surface of the floor, there is no unreasonable force to pry, so the hoisting operation of the floor can be performed smoothly. To be seen.

[Brief description of drawings]

FIG. 1 is a perspective view of a bed that employs a floor undulation mechanism according to the present invention.

FIG. 2 is an exploded perspective view of the bed.

FIG. 3 is a side view of the same couch.

FIG. 4 is a simplified side sectional view showing a back raising mechanism.

FIG. 5 is an exploded perspective view of the undulating mechanism portion of the leg floor according to the present invention.

FIG. 6 is a schematic side cross-sectional view of the undulating mechanism portion of the leg floor.

FIG. 7 is a simplified explanatory view of a back undulation mechanism according to the present invention.

FIG. 8 is a simplified explanatory view of a conventional floor undulation mechanism.

[Explanation of symbols]

1 sofa bed, 2 legs, 3 casters,
4 link mechanism, 5 link mechanism, 6 main body frame, 7 connecting pipe, 8 actuator, 9 working arm, 10 headboard, 11 back floor, 12 seat floor, 13 leg floor, 14 foot board, 15 push up arm, 16 actuator, 17 support arms, 18
Guide rail, 19 guide surface, 20 mounting bracket, 2
DESCRIPTION OF SYMBOLS 1 actuator, 22 extrusion member, 23 horizontal shaft, 24 rolling roller, 61 horizontal pipe, 62 guide member, 63 roller, 64 leg floor receiving pipe, M
Mattress, S side fence.

Claims (3)

[Claims] 1. An operating rod that is moved forward and backward by a drive source such as a motor is attached below the floor of the bed, and a slider is provided at the tip of the operating rod, and a guide rail is provided on the lower surface of the floor that is provided up and down. And a slider at the tip of the operating rod slidably supports the lower surface of the guide rail on the lower surface of the floor, and the lower surface of the guide rail is a guide surface that becomes lower toward the tip of the undulating floor. The undulating mechanism of the floor in the bed, which is formed by forming a bed. 2. A slider is provided with a rotary roller at the tip of the operating rod, and the rotary roller is configured to roll along the guide surface of the lower surface of the guide rail on the lower surface of the floor. The undulating mechanism of the floor in the bed according to 1. 3. A pair of left and right sliders are provided on the tip of the operating rod, and a pair of left and right guide rails are provided on the lower surface of the floor, and each of the left and right sliders guides the lower surface of the left and right guide rails on the lower surface of the floor. The undulating mechanism of the floor in the bed according to claim 1 or 2, wherein the undulating mechanism is configured to support the surface.