JPH0558321B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a soft bed device that can be converted into either a sofa or a bed.

(Prior Art) There are various types of sofa bed devices that can be mutually converted into a sofa and a bed, and one of them is one that allows the user to take an upright posture when using the bed as a bed. There are some that can also be used as so-called raised beds.

This type of soft bed device has a rectangular plate-shaped base, and at least four frames are arranged on this base so that they form a substantially rectangular shape. Adjacent frames are connected to each other by a hinge mechanism so that they can rotate freely and can be held at a predetermined rotation angle. The frame is formed from a frame body and a cushion body such as a spring unit or urethane foam housed within the frame body.

By the way, according to the soft bed device having such a configuration, in order to improve the cushion performance, the cushion body must have a certain degree of thickness, so that the frame housing the cushion body also has a certain thickness. I try to make it have almost the same thickness. In this way, when frames have a predetermined thickness, unless adjacent frames are connected by a hinge mechanism so that the upper end side in the thickness direction of these frames serves as a rotation fulcrum, when the frames are rotated, The upper ends in the thickness direction of the side ends of the matching frames and cushion bodies abut against each other, making it impossible to rotate the frames.

By the way, conventionally, when four frames are rotatably connected by hinge mechanisms, not only the adjacent sides located on the outside of the four frames but also the sides located inside are connected by the hinge mechanism. I am trying to connect each one. In other words, by connecting not only one end side in the width direction of a pair of opposing frames but also both ends thereof by a hinge mechanism, these frames are connected with sufficient strength.

However, if the four frames are arranged in a rectangular shape as a whole and the opposite ends of a pair of frames are connected by a hinge mechanism, the four hinge mechanisms will be located in the center where the corners of the four frames gather. will be located. Since these hinge mechanisms use the upper end side of the frame in the thickness direction as a pivot point, the portion connecting the pair of frames is located above the frame in the thickness direction. Therefore, the connecting portions of the respective hinge mechanisms come into contact with the user's body, giving the user a feeling of a foreign body, resulting in a reduction in cushion performance.

Furthermore, it is inevitable that there will be some distance between the sides of adjacent frames. In this case, the cushioning performance of the area between the two ends will be inferior to that of other areas, so the cushioning performance may not be uniform when used as a bed.

(Problems to be Solved by the Invention) As described above, in the conventional sofa bed device having four or more frames rotatably connected by a hinge mechanism, the central part where the corner parts of each frame gather together is also Because the hinge mechanism is located in such a position, the hinge mechanism may give a sense of discomfort to the user and reduce cushion performance, and the space between adjacent frames may also cause a reduction in cushion performance. Something happened.

This invention was made based on the above circumstances, and its purpose is to connect only the outer sides of at least four frames arranged in a rectangular shape as a whole with a hinge mechanism, and The sides of the frame are not connected by a hinge mechanism to prevent the hinge mechanism from being located in the center where the corners of the four frames converge, resulting in a decrease in cushioning performance. To provide a soft bed device which prevents cushion performance from deteriorating even if the bed slips in time.

[Structure of the invention]

(Means and effects for solving the problem) In order to solve the above problem, the present invention includes a base, a base having a predetermined thickness, and arranged on the base so that the planar shape as a whole is rectangular. At least four frames and a pair of adjacent frames located on the outer periphery of a rectangle formed by these frames are connected so that the sides of the frames can be rotated freely and held at a predetermined rotation angle so that the upper end in the height direction serves as a fulcrum. a hinge mechanism, a plurality of wires each disposed along the gap between the opposite sides of each adjacent frame, and one end fixed to the outer side part of each frame, and the corners of the four frames. It has a through hole which is arranged in the assembled part and through which the other end of each of the wires is inserted, and after passing through the through hole, it is bent and the other end is adjacent to the base or the frame to which one end of the wire is fixed. A holding member is provided that holds each of the wires fixed to the frame in a state where the wires do not slacken significantly even when the frame is rotated.
Each of the wires is provided with a function similar to that of a hinge mechanism, and these wires provide cushioning properties between the sides of the frame.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 2 shows a perspective view of the frame structure of the sofa bed device according to the present invention, and in the figure, reference numeral 1 denotes a base in the shape of a rectangular plate. Casters 2 are provided at each of the four corners of the lower surface of this base 1,
Also, on the top surface, there are four frames 3a, first to fourth.
~3d are arranged so that the planar shape as a whole is rectangular. The first frame 3a and the second frame 3b are formed into a rectangular shape having a longer length than the third frame 3c and the fourth frame 3d.

Each of the frames has a wooden frame 4. This wooden frame 4
consists of a rectangular slatted part 5 and side plates 6 erected on two sides of this slatted part 5. and,
The two sides of the four frames 3a to 3d provided with the side plates 6 are located on the outer periphery of the rectangle formed by the four frames, and the remaining two sides of each frame 3a to 3d are spaced apart at a predetermined interval. They are placed on the base 1 so as to face each other. Further, as shown in FIG. 3, a spring unit 7 as a cushion body is placed on the drainboard portion 5 of each of the frames 3a to 3d.

The first frame 3a and the second frame 3b
The opposing ends of the side plate 6 located on one end in the longitudinal direction, that is, on the outer periphery of the rectangle formed by the four frames, are connected by a first hinge mechanism 8, and the third frame 3c and the fourth frame One end of the side plate 6 located on one longitudinal end side of the side plate 3 d is connected to the second hinge mechanism 9 by a second hinge mechanism 9 .
Furthermore, the first frame 3a and the third frame 3
The opposite end of the side plate 6 located on one end side in the width direction with c is connected by a third hinge mechanism 11, and is located on one end side in the width direction of the second frame 3b and the fourth frame 3d. Opposing ends of the side plates 6 are connected by a fourth hinge mechanism 12. Among the four frames 3a to 3d, in this embodiment, the first frame 3a and the second frame 3b
Either one of them can be selectively fixed to the base 1 by a fixing mechanism 20, which will be described later.

The first to fourth hinge mechanisms 8 to 12 use the upper ends of the frames 3a to 3d in the thickness direction, that is, the upper surfaces of the spring units 7, as pivot points. Further, the hinge mechanisms 9 to 12 are designed to be able to freely rotate the respective frames 3a to 3d and hold them at any rotation angle. Therefore, since each hinge mechanism uses the upper surface side in the thickness direction of the spring unit as a rotation fulcrum, when each connected frame is rotated upward, the side end of the spring unit 7 of the adjacent frame This prevents them from coming into contact with each other.

Note that the third frame 3c and the fourth frame 3d are separated in the middle in the longitudinal direction of the wooden frame 4,
As shown in FIG. 2, the divided parts are connected to each other by auxiliary hinges 13 so as to be rotatable and holdable at any angle. 4 frame 3c, 3
When d is raised, only the leading ends of these frames can be raised. The side plate 6 erected on one end of the frames 3c and 3d in the width direction is divided at the auxiliary hinge 13, and can be rotated from the divided position. A notch 14 is provided at the upper end in the thickness direction.

The first frame 3a and the second frame 3b
As shown in FIG. 2, a first wire 15 and a second wire 16 are fixed at one end to the outer surface of one end of the side plate 6 connected by a first hinge mechanism 8. As shown in FIG. These wires 15 and 16 are connected to the side plate 6
It is arranged along the gap between the opposing sides of the first frame 3a and the second frame 3c at almost the same height as the upper end, and is guided to a place where the corners of the four frames 3a to 3d are gathered. It's dark. A ring-shaped holding member 17 is provided at this location as shown in FIG. The first wire 15 and the second wire 16 are inserted through the through hole 17a of the holding member 17 from above. The first wire 15 led out to the lower surface side of the holding member 17 is connected to the holding member 17.
is bent radially outward at a predetermined angle, and then the third
After the frame 3c is engaged with the first screw 18 provided at the lower corner of the wooden frame 4 and turned, it is passed through the through hole 17a of the holding member 17 from the lower side and led out to the upper side. has been done. and,
This first wire 15 is bent in a direction along the gap between the opposing sides of the second frame 3b and the fourth frame 3d, and is guided along the gap between the opposing sides of the second frame 3b and the fourth frame 3d. It is bent along the outer surface from the upper end of the side plate 6 erected on one end side in the width direction, and the end thereof is fixed to the outer surface of the side plate 6.

The second wire 16 is passed through the through hole 17a of the holding member 17 from the upper surface side, and then bent and inserted into the second screw provided on the lower surface of the corner of the wooden frame 4 of the fourth frame 3d. 19 and is turned. And this second wire 16
is passed through the through hole 17a again from the lower surface side of the holding member 17, and is bent in a direction along the gap between the opposing sides of the first frame 3a and the third frame 3c, and a The side plate 6 is guided along the third frame 3c and is erected on one end side in the width direction, and is bent outward from the upper end thereof, and its end is fixed to the outer surface.

The third frame 3c and the fourth frame 3d
A third wire 21 and a fourth wire 22 are fixed at one end to the outer surface of one end of the side plate 6 connected by a second hinge mechanism 9 to the third wire 21 and the fourth wire 22, respectively. These wires 21 and 22 are connected to the third frame 3c and the fourth frame 3c.
It is guided at approximately the same height as the upper end of the side plate 6 along the gap between the opposing sides of the frame 3d, and is inserted into the through hole 17a of the holding member 17 from the upper surface side. After the third wire 21 led out to the lower surface side of the holding member 17 is bent at a predetermined angle,
The first frame 3a is turned by being engaged with a third screw 23 provided on the lower surface of the corner of the wooden frame 4. The through hole 17a of the holding member 17 is
The second frame 3b
and the fourth frame 3d, and the end thereof is bent from the upper end to the outer surface of the side plate 6 which is erected on one side in the width direction of the second frame 3b. Fixed.

The fourth wire 22 is led out to the lower surface side of the holding member 17, and then engaged with a fourth screw 24 provided on the lower surface of the corner of the wooden frame 4 of the second frame 3b and turned. , is passed through the through hole 17a of the holding member 17 and led out from the lower surface side to the upper surface side, is bent in a direction along the gap between the first frame 3a and the third frame 3c, and is passed through the gap between the first frame 3a and the third frame 3c. It is guided to the outer surface from the upper end of the side plate 6 erected on one end side in the width direction of the first frame 3a, and the end thereof is fixed to the outer surface.

Therefore, the first to fourth wires 15,
Each frame 3a to 3d by 16, 21, 22
Adjacent sides inside are connected. That is, the first frame 3 a and the third frame 3 c and the third frame 3 c and the fourth frame 3 d are connected by the first wire 15 , and the second frame 3 is connected by the second wire 16 . 3b and the fourth frame 3d, and the fourth frame 3d and the third frame 3c are connected. Further, the third frame 3c and the first frame 3a and the first frame 3a and the second frame 3b are connected by the third wire 21, and the fourth frame 3c is connected by the fourth wire 22. 3d and second frame 3b
and second frame 3b and first frame 3a
are connected. That is, the side sides of the adjacent frames 3a to 3d are connected at one end by the hinge mechanisms 8, 9, 11, and 12, and at the other end by the wires 15, 16, 21, and 22. There is.

Further, since each wire passing through the through hole 17a of the holding member 17 is bent, the holding member 17 is placed at approximately the same height as the wire running between the frames. is held in

As shown in FIGS. 3 and 4, a sheet cushion material 25 made of urethane foam or the like is attached to the upper surface of each of the frames 3a to 3d. The outer surface of this sheet-like cushion material 25 is covered with an exterior fabric 26. This exterior material 26 covers not only the sheet-like cushion material 25 but also the outer circumferential side, lower surface, and inner side surface of each of the frames 3a to 3d.

7 or 4 on the upper surface of the exterior material 26.
A comforter 27 is provided as shown in the figure.
This comforter 27 is constructed by interposing a heat insulating material 31 such as cotton between an outer material 28 and a lining material 29, and the peripheral edges of these three materials are sewn together by an edge member 32.
On the inner surface of the seam part of this edge member 32, there is a hanging cloth 3.
One end of 3 is sewn together, and the first end is sewn together.
A fastener 34 is provided. This first fastener 34 is detachably attached to a second fastener 35 provided on the outer peripheral surface of the exterior material 26 covering each of the frames 3a to 3d.

When the comforter 27 is not in use, the hanging cloth 33 is folded into the inner surface of the comforter 27 as shown by the solid line in FIG. Therefore,
Since the comforter 27 is integrated with the exterior material 26 and the hanging cloth 33 is not exposed to the outside, the appearance is good. When using the comforter 27, remove the first and second fasteners 34, 35 and let the hanging cloth 33 hang as shown by the chain line in FIG.
This hanging cloth 33 can prevent drafts from entering.

The fixing mechanism 20 for fixing the first frame 3a or the second frame 3b to the base 1 is a fifth
It is constructed as shown in the figure and FIG. That is, the base 1, the first frame 3a and the second
Through holes 1a and 4a are bored in the frame 3b at positions corresponding to the wooden frame 4, respectively. wooden frame 4
The through hole 4a is formed to have a larger diameter than the through hole 1a of the base 1. A connecting shaft 36 is inserted through these through holes 1a and 4a. This connecting shaft 36 has a small diameter part 36a and a large diameter part 36 corresponding to each through hole 1a, 4a.
A lever 37 is fixed by a nut 38 to the end of a small diameter portion 36a protruding from the through hole 1a of the base 1. A pair of engagement grooves 39 are provided at the end of the large diameter portion 36b that protrudes toward the upper surface of the wooden frame 4.
are formed parallel to the tangential direction. A U-shaped clip 42 fixed to the upper surface of the wooden frame 4 via a plate 41 is elastically engaged with the engagement groove 39. The wooden frame 4 is fixed to the base 1 by these engagements, and the connecting shaft 3 is fixed by the lever 37.
6 is rotated approximately 90 degrees, the clip 42 is pushed out in the portion of the large diameter portion 36b where the engagement groove 39 is not formed, so if the first frame 3a is lifted in this state, Through hole 4 of the wooden frame 4
The large diameter portion 36b of the connecting shaft 36 can be pulled out from a. Therefore, the engagement groove 3 of the connecting shaft 36 passed through the through hole 4a of the wooden frame 4 of the first frame 3a
9 to engage the clip 42 to the second frame 3.
If the connection shaft 36 passed through the through hole 4a of the wooden frame 4b is disengaged from the clip 42, the first frame 3a is unrotatably fixed to the base 1, and the second frame 3b It is now possible to rotate the

At the center of the upper surface of the base 1 in the width direction
As shown in the figure or FIG.
is fixed by a pair of screws 44. A recess 45 is formed between the upper and lower ends on both sides of the locking member 43 . One end of the wooden frame 4 of the first frame 3a in the width direction is engaged and held in one recess 45, and the other end of the wooden frame 4 is held in the other recess 45 when the second frame 3b is laid down almost horizontally. One end in the width direction is engaged and held. This prevents one end side of the first and second frames 3a, 3b in the width direction from floating upward or wobbling in the width direction.

According to such a soft bed device, the mutually opposing inner sides of the four frames 3a to 3d arranged on the base 1 so as to form a generally rectangular shape are arranged like the outer sides. The first to fourth parts are not connected by a hinge mechanism.
can be connected by wires 15, 16, 21, 22. These wires are inserted into the through holes 17a of the holding member 17 at the parts where the corners of the four frames 3a to 3d gather, so that they are adjacent to each other at approximately the same height as the upper surface side in the thickness direction of each frame 3a to 3d. It is stretched at a position corresponding to the gap between the sides of each frame. Therefore, by means of these wires 15, 16, 22, 23, one end side of the side of the adjacent frames 3a to 3d is connected to the hinge mechanism 8,
Since the other end sides connected by 9, 11, and 12 are connected, a pair of adjacent frames are connected with sufficient strength, and even if a load is applied to the raised frame, the frame will not This prevents it from shifting.

Further, each of the above-mentioned wires is made to run toward the upper surface side in the thickness direction of each frame 3a to 3d, and
After being held by a holding member 17 at a portion where the corners of the first to fourth frames 3a to 3d gather, one end of the wire is fixed to a frame adjacent to the fixed frame. Therefore, as shown in FIG.
If the above-mentioned wires are large when raising the frames 3b and 3d and using them as a bed with a raised back, or when raising the second and fourth frames 3b and 3d and using them as a sofa as shown in Fig. 10, This prevents sagging. Therefore, the state of connection of each frame by each wire is not impaired. Moreover,
Since the wire is run between the opposing sides of each frame 3a to 3d, the cushioning properties of that portion are maintained by the wire,
Especially when used as a bed, the overall cushioning properties can be made almost uniform.

Note that this invention is not limited to the above embodiment,
As shown in FIG.
Six frames 51a to 51f are arranged, and their outer sides are six hinge mechanisms 52a to 5.
Also in the soft bed device connected by 2f, holding members 17 are provided at two locations where the corners of the four frames meet, and the holding members 17 are used to tension the bed in the same way as in the above embodiment. If a plurality of wires 50 are held, the same effects as in the above embodiment can be obtained using these wires 50.

Further, the holding member 17 is not limited to a ring-shaped member, but may be, for example, a disc-shaped member having through holes formed therein according to the number of wires to be inserted therethrough.

Moreover, although one end of the wire is fixed to the outer peripheral surface of the frame and the other end is fixed to the frame adjacent to that frame, the other end of the wire may be fixed to the base.

〔Effect of the invention〕

As described above, according to the present invention, adjacent frames are connected by wires, and the wires are held by the holding member so that the wires do not sag significantly even when the frames are rotated. . Therefore, since the above-mentioned wire can be used in place of the hinge mechanism, there is no need to provide a hinge mechanism in the area where the corners of the four frames meet, thereby making the user feel uncomfortable about the hinge mechanism. I don't have to let it happen. In addition, since the wire is stretched between the sides of the adjacent frames in a position corresponding to the gap between the sides of the frames, the cushioning properties of the area between the sides can be compensated for by the wire. It is possible to improve the cushioning properties especially when used as a bed.

[Brief explanation of the drawing]

1 to 10 show an embodiment of the present invention, FIG. 1 is a plan view of a portion where the corners of four frames are assembled, FIG. 2 is a perspective view of the frame placed on the base, Figure 3 is a sectional view taken along the longitudinal direction of the whole, Figure 4 is a sectional view also taken along the width direction, and Figure 5 is a sectional view taken along the width direction.
The figure is a cross-sectional view of the part where the frame is fixed by the fixing mechanism, Figure 6 is a plan view taken along the - line in Figure 5, Figure 7 is a cross-sectional view of the futon attachment structure, and Figure 8 is a cross-sectional view of the bed. FIG. 9 is a perspective view of the bed with the back raised, FIG. 10 is a perspective view of the bed as seen from the rear with the bed turned into a sofa, and FIG. 11 is a frame showing another embodiment of the invention. It is a top view of the arrangement state of. DESCRIPTION OF SYMBOLS 1...Base, 3a-3d...1st to 4th frame, 8, 9, 11, 12... 1st to 4th hinge mechanism, 15, 16, 21, 22... 1st to 4th
wire, 17... holding member.

Claims (1)

[Claims] 1 a base, at least four frames having a predetermined thickness and arranged on the base so as to have an overall rectangular planar shape, and a pair of adjacent frames located on the outer periphery of the rectangle formed by these frames; A hinge mechanism connects the side sides of the frame so that the upper end in the height direction serves as a fulcrum and can be freely rotated and held at a predetermined rotation angle, and a A plurality of wires are arranged respectively and one end is fixed to the outer side part of each frame, and a through hole is arranged at a part where the corners of the four frames gather and the other end of each of the wires is inserted. Each of the wires is bent after being passed through the through hole, and the other end is fixed to the base or the frame adjacent to the frame to which one end of the wire is fixed, so that the wires will not sag significantly even when the frame is rotated. 1. A sofa bed device characterized by comprising a holding member that is held in a state where the sofa bed is not in use.