JPH033234Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a retractable bed device that can be stored in a storage box when not in use.

[Technical background of the invention and its problems]

Beds installed indoors occupy a large amount of indoor space, so they have the disadvantage of being very intrusive when not in use. In order to eliminate these drawbacks, various retractable bed devices have been proposed in which the bed can be rotated from a collapsed state to an upright state and housed in a storage box when not in use.

By the way, a conventional retractable bed device has a structure shown in, for example, Japanese Patent Publication No. 56-43726. In other words, wheels are provided at the front and rear parts of the bed, and the front wheels are slidably engaged with guide grooves provided in the longitudinal direction of the storage column, and the cables connected to the front part of the bed are connected to each other. It is wound up using a winding machine. The bed is caused to fall down under its own weight by the rolling of the rear wheel, and the cable is wound up to accommodate the bed in an upright position within the housing.
However, according to such a structure, when a bed that is in an upright state is to be collapsed, the bed will collapse due to its own weight, so even if it is in a state where it is likely to fall in the direction of collapse, for example, the rotating state of the rear rollers may cause the bed to collapse. The problem was that even if there was a slight foreign object on the rolling surface of the rear rolling wheels, it would not fall down smoothly. Moreover, the bed may suddenly fall down when the rope is loose, which is not only extremely dangerous, but the impact may break the rope or damage the winding machine. There was a fear that this might happen.

[Purpose of invention]

This idea is a retractable bed that allows a bed held upright in a storage box to be smoothly lowered by a drive source without relying on its own weight, and also allows the bed to be safely stored when not in use. The goal is to provide equipment.

[Summary of the idea]

This idea consists of a cable-like body stretched endlessly in a storage box with an open front, one end of the bed connected to the cable-like body, and a roller rotating at the other end that supports the bed so that it can run. The cable-like body is moved back and forth by a drive source, and the cable-like body is driven not only when raising the bed but also when lowering it, and also when opening the storage box. This is a retractable bed device whose front side can be opened and closed using a shutter.

[Example of idea]

A first embodiment of this invention will be described below with reference to FIGS. 1 to 5. The retractable bed device shown in FIGS. 1 and 2 includes a storage box 1 with an opening 2 formed in the front surface. At the bottom of the storage box 1, as shown in FIG. 2, there is provided a bottom member 4 having an inclined surface 3 that slopes low toward the front. On the inner surfaces of both side plates 5 of the storage box 1, inner plates 6 are provided upright in parallel and spaced apart from each other. A through hole 7 is formed on the rear end side in the depth direction of each of these inner plates 6 and extends substantially over the entire length in the vertical direction. These holes 7
As shown in FIG.
A guide shaft 10 fixed to the mounting shaft 8 with its axis shifted from the mounting shaft 8 through a connecting plate 9 is slidably inserted therethrough. One end of a second connecting plate 11 is fixed to the end surface of the guide shaft 10 protruding from the through hole 7. A first fixture 12 having a substantially U-shaped cross section is fixed to the other end of the second connecting plate 11. One end of a first wire 13 as a cable-like body is fixed to one side of the first fixture 12, and a through hole 14 is bored in the other side, and the other end can freely slide into the through hole 14. These wires 1
A spring 15 is stretched between both ends of 3. The middle part of the first wire 13 engages with a plurality of upper pulley groups 16a and a plurality of lower pulley groups 16b, which are rotatably arranged in the upper and lower parts of the storage box 1, as shown in FIG. It is possible to run freely along the inner surface of the storage box 1. In addition, the first wire 13
The middle part of the housing box 1 engages with a drum 18 fitted to a drive shaft 17 of a first motor 16 as a drive source arranged at the bottom of the storage box 1 . Therefore, by rotating this drum 18, the first wire 13 is made to travel. Note that the first motor 16 is configured such that the rotation direction of its drive shaft 17 is changed by a control section (not shown), and as a result, the first wire 13
The direction of travel is changed.

At both ends of the mounting shaft 8 located on the inner surface side of the inner plate 6, as shown in FIG. They are rotatably connected by fitting through the holes 23. Further, on the lower surface of the other longitudinal end of the bed 21, as shown in FIGS. 1 and 2, a leg 25 having a rotatably provided roller 24 at the lower end is provided protrudingly. Therefore, the first wire 13
When the bed 21 is driven to travel, the bed 21 moves up and down in conjunction with this movement. In other words, bed 2
When the first wire 13 is run in the direction of arrow a in FIG. 4 while the first wire 13 is laid down almost horizontally as shown by the solid line in FIG. 2, the bed 21 is moved as shown by the chain line in FIG. be made to stand up. At this time, the roller 24 of the leg 25 provided at the other end of the bed 21 rides on the inclined surface 3 of the bottom member 4. Further, when the first wire 13 is made to run in the direction shown by the arrow b in FIG. I'm starting to feel like I'm being forced to do that. At this time, the rollers 24 roll on the inclined surface 3 of the bottom member 4, thereby promoting the movement of the bed 21 in the direction of lodging. The upright position and the down position of the bed 21 are detected by a limit switch (not shown), and the first motor 16 is controlled by this detection signal.

As shown in FIG. 2, guide grooves 28 are formed on the inner surfaces of the pair of inner plates 6, each having a substantially inverted U shape.
is engraved. Shutters 29 made of a bendable plate-like body are provided in these guide grooves 28, with both ends in the width direction slidably engaged with each other.
The upper end of the shutter 29 is bent into an arc shape.
It engages with a pulley 30 rotatably provided on the upper part of the inner plate 6. This shutter 29 has a length that opens the opening 2 of the storage box 1 when the shutter 29 is slid in the direction shown by arrow c in FIG. 2 until one end reaches the end of the guide groove 28. . A second fixture 31 having a substantially U-shape is fixed to the outer surface of one end of the shutter 29. Both ends of a second wire 32 are connected to the second fixture 31 in the same manner as the connection structure between the first wire 13 and the first fixture 12 described above.
The middle part of the second wire 32 is stretched between an upper pulley 33 provided at the upper part of the storage box 1 and a lower pulley 34 provided at the lower part. This lower pulley 34 is connected to the rotation shaft 36 of the second motor 35.
is attached to. Therefore, when the second wire 32 is driven to travel by this second motor 35, the shutter 29 is interlocked with this, and the storage box 1
A front opening 2 is opened and closed.
Furthermore, since the upper end of the shutter 32, which is bent into an arc, engages with the pulley 30, the sliding resistance between the shutter 32 and the guide groove 28 is reduced, and the shutter 32 runs smoothly. Furthermore, the spring 15 provided between both ends of the first and second wires 13 and 32
3, 32 is designed to contract and absorb the elongation.

According to such a structure, when the first motor 16 is operated to drive the first wire 13 to run in the direction indicated by the arrow a in FIG.
are housed in the storage box 1 in an interlocking manner, changing from a lying state shown by a solid line in FIG. 2 to an upright state shown by a chain line. At this time, the rollers 24 of the legs 25 of the bed 21 ride on the inclined surface 3 of the bottom member 4, and the bed 21 is in an inclined state in which the lower end protrudes more forward than the upper end. After the bed 21 is erected, the second motor 35 is activated to run the shutter 29, and the front opening 2 of the storage box 1 is closed by the shutter 29, which improves the appearance. Not only that, but the bed 21 will not inadvertently protrude from the storage box 1.

On the other hand, when the bed 21 is laid down,
After the shutter 29 is moved in the opposite direction by the second motor 35 to open the opening 2 of the storage box 1, the first motor 16 is operated and the first wire 13 is moved as shown in FIG. Make it run in the direction of arrow b shown. Then, the bed 21 is forcibly laid down by the first wire 13. That is, the bed 21 is laid down until it is in a substantially horizontal state while the rollers 24 of the legs 25 on the lower end side roll on the inclined surface 3 of the bottom member 4, so that the bed 21 is ready for use. Moreover, since the bed 21 is forcibly laid down by the first wire 13, even if there is some foreign matter on the surface on which the roller 24 rolls, the foreign matter will cause the roller 24 to fall down.
The roll will be smoothly laid down without being blocked.

FIG. 6 shows a second embodiment of this invention, which differs from the first embodiment in the drive structure of the bed 21. That is, an upper pulley 41 and a lower pulley 42 are rotatably provided at the upper and lower parts of both sides inside the storage box 1, respectively, and the first wire 13 is stretched between the upper and lower pulleys 41 and 42. Further, a two-shaft motor 43 is used as a drive source, and a pair of lower pulleys 42 are fitted onto a rotating shaft 44 of this two-shaft motor 43.

Even in such a structure, the first wire 1 is moved in the forward and reverse directions by the two-axis motor 43.
3, the bed 21 is forcibly driven not only in the upright direction but also in the lodging direction, so that it can be laid down smoothly.

In addition, in each of the above embodiments, a chain may be used as the cable-like body.

[Effect of idea]

As mentioned above, this idea has an opening at the front,
A spring is provided between both ends of the storage box, which has a guide groove on the inner surface and a pulley on the upper part of the inner surface, and one end of the bed is connected to a cable-like body stretched endlessly. A roller is provided at the other end to support the bed in a movable manner, and the cable body is caused to reciprocate by a driving source, and a bendable shutter is engaged with the guide groove of the storage box. The upper end of the storage box is engaged with the pulley to open and close the open front surface of the storage box.

Therefore, when the bed is not only erected but also laid down, it is forcibly driven by the cable-like body, so that the bed can be laid down more smoothly and reliably than in the conventional bed, which is laid down by its own weight. be able to. Moreover, when the bed is in the stored state, the rollers provided at the other end of the bed ride on the slope of the bottom member provided at the bottom of the storage box, resulting in the bed being in an inclined state where the lower end protrudes further forward than the upper end, causing the bed to collapse. Since the roller sometimes rolls on an inclined surface, the bed can be smoothly laid down. Furthermore, if the open front surface of the storage box is closed with the shutter, not only will the appearance be good, but it will also be possible to prevent the bed from inadvertently protruding from the storage box. Further, the shutter slides in the guide groove of the storage box, and the upper end bent in an arc engages with the pulley to travel, so it can travel smoothly and reliably. Moreover, when the bed is in the stored state, the rollers provided at the other end ride on the inclined surface of the bottom member provided at the bottom of the storage box, and the bed is in an inclined state with the lower end protruding forward than the upper end, and when it is collapsed, the bed is in an inclined state. Since the rollers roll on the inclined surface, the bed can be laid down smoothly.

[Brief explanation of the drawing]

Figures 1 to 5 show a first embodiment of this invention, with Figure 1 being a front view, Figure 2 being a longitudinal sectional view, and Figure 3 being a longitudinal sectional view.
The figure is a cross-sectional view taken along the line of FIG. 2, FIG. 4 is a perspective view showing a schematic configuration of the arrangement of the first wire and the second wire, and FIG. 5 is a cross-sectional view of the bed and the first wire. FIG. 6 is an enlarged sectional view of the connecting portion of the device, and FIG. 6 is a schematic configuration diagram showing a second embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Storage box, 13... First wire (cord-shaped body), 16... First motor (drive source), 21...
Bed, 24...roller, 43...2-axis motor (drive source).

Claims (1)

[Scope of utility model registration request] A storage box with an open front, a cable-like body stretched endlessly with a spring provided between both ends inside the storage box, a bed with one end connected to the cable-like body, and the bed. A roller rotatably provided at the other end and movably supporting the other end of the bed and the cable-like body are caused to travel back and forth, and the bed that is linked to this travel is forcibly moved into the storage box. a drive source that drives the bed in an upright state and a state in which the other end protrudes from the storage box and becomes substantially horizontal; and the roller provided at the bottom of the storage box and at the other end when the bed is erected. a bottom member having a slope that slopes low toward the front surface of the storage box on which the storage box rests; a guide groove provided on the inner surface of the storage box; a pulley provided on the upper inner surface of the storage box; It is characterized by comprising a bendable shutter which slidably engages with the guide groove, whose upper end bent in an arc shape engages with the pulley, and which opens and closes the open front surface of the storage box. Retractable bed device.