JPH01277512A - Sofa bed - Google Patents

Abstract

PURPOSE:To make it easy to connect with corresponding connecting-ends one another, and to obtain a whole frame with high stiffness and high strength by a method wherein a seating area frame-body and a back rest area frame-body consist of framework members in which their connecting ends are made freely movable and board members which are additionally attached to these framework members. CONSTITUTION:A sofa bed consists of a seat area 1, a backrest 4 and a cutout area 8. The seat area 1 consists of a seat main body 11 and both bending side-seats 12, and are joined with by rockable hinges 3. The backrest 4 consists of a back main body 41 and both bending backrests 42, and is connected with them by rockable hinges 6. The cutout area 8 is positioned between a frame body 20 for the bending side-seat 12 and a frame body 50 for the bending backrest 42, and formed almost in a triangular form opened outward. The back main body 41 is connected with the rear end of the seat main body 11 via rockable hinges 7. Frame bodies 15 and 45 for the seat main body 11 and the backrest main body 41, at least, consist of framework members 13 and 43 of which connecting ends 13a and 43a are made freely movable, and board members 14 and 44 which are attached to these framework members 13 and 43. The connecting ends 13a and 43a corresponding to both the frame bodies 15 and 45 are connected with each other by the hinges 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sofa-bed that can be used as a floor-standing sofa or bed by changing the folding state of each part. It is something.

[Prior Art] This type of sofa-bed is equipped with an elongated seat and a backrest having the same elongated shape as the seat, and the backrest is connected to the rear edge of the seat via a lockable hinge. What has been done is known. By placing the front seat on the floor and raising the backrest, it becomes a sofa, and by lowering the frontrest to the floor, it becomes a bed.

Furthermore, based on this structure, a chair was developed in which both end portions of the seat and backrest were configured to be bendable, and the bent portions could be used as the armrests of a sofa or the pillows of a bed. ing. However, with conventional models, when the backrest is raised and used as a sofa,
If you bend the back folding part toward the surface side with the seat folding part folded, the two will interfere and the bending mode of one of them will be limited, making it difficult to obtain the optimal posture that matches the purpose of use. is likely to occur. Therefore, a structure has been developed in which a structure cutout area is provided between the structure of the seat folding part and the structure of the front folding part to prevent mutual interference during bending.

In addition, in this type of thing, the structure of the seat and backrest is
It consists of a frame made by joining aggregates such as pipes into a frame shape, and a number of elastic belts stretched between the aggregates of this frame, and the connecting ends provided on each frame can be locked together. They are generally connected via hinges.

[Problems to be Solved by the Invention] However, it is difficult to correct the position of the connecting end provided on a frame formed by joining aggregates into a frame shape by deforming the aggregates. Therefore, if even a slight dimensional error occurs between the connecting ends of the seat body and the back body, between the seat body and the folded part of the seat, or between the back body and the front folded part, each of the corresponding joints This makes the connection work difficult when connecting the ends together via a hinge.

Furthermore, when used primarily as a sofa, the locations on which the load is applied are substantially limited. Therefore, with a structure configured as described above, the belt only expands and contracts at the load-bearing areas and the areas near them, so there is a problem that only the frequently used areas deteriorate early. be.

Moreover, if such a device is placed directly on the floor and used, problems will occur. That is, when sitting on such a sofa-bed, the load is directly supported by the floor via the cushion material and the elastic belt, and the frame tends to be elastically movable. As a result, the backrest becomes unstable and cannot perform its full function. In order to deal with such problems, conventional methods
The frame of the seat body is fixed on a base, and this base is placed on the floor. Therefore, the conventional
It cannot be used in a low position, making it unsuitable as furniture for so-called floor life.

The present invention aims to eliminate such problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a seat in which bent portions of the seat are connected to both ends of the seat body via lockable hinges, and both ends of the back body. a backrest formed by connecting a front folding part to the front folding part through a lockable hinge; and an outwardly expanding backrest provided between the structure of the seat folding part and the structure of the front folding part. In the sofa-bed, the back body is connected to the rear edge of the seat body via a lockable hinge, and the back body is connected to the rear edge of the seat body through a lockable hinge. The body is each composed of an aggregate with a plurality of connecting ends as free ends, and plate materials attached to the aggregate, and the corresponding connecting ends of both structures are connected to each other via the hinge. It is characterized by what it did.

[Function] According to such a configuration, the connecting ends of each aggregate can relatively freely change their positions by deforming the aggregate, so there is no dimensional error between the corresponding connecting ends. Even if this occurs, the corresponding connecting ends of the seat and backrest can be easily connected to each other via the hinge. Then, each aggregate forms a frame shape as a whole when connected to the seat and backrest, increasing the rigidity of the aggregate.

Moreover, since the plate material is attached to the aggregate, the rigidity and strength of the entire structure is increased. Even if a load is applied to a portion of the structure, the load is dispersed through the plate materials and transmitted to the floor surface, so it is possible to eliminate the problem of early deterioration in only frequently used areas. Since the entire structure is pressed and fixed onto the floor by the load, there is no need to provide a special foundation.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

This sofa-bed has seat bending parts 1 at both ends of the seat body 11.
2 are connected to each other through a lockable first hinge 3, and an apron bent portion 42 is connected to both ends of the back body 41 through a lockable second hinge 6. It is equipped with a backrest 4.

The original body 11 has a structure 15 formed by screwing plywood 14, which is a plate material, onto a pipe structure 13, which is an aggregate, and has sheet-shaped cushioning materials 16, 17 on the upper and lower surfaces and the outer periphery of the structure 15. It is double coated and has an elongated shape.

The pipe structure 13 is made by joining together one end of each of a plurality of metal pipes, and each connecting end 13a on the other end side is a free end.

The seat bending portion 12 is a structure 2 formed by screwing plywood 19 onto a pipe structure 18 formed by joining metal pipes vertically and horizontally.
0, and the upper and lower surfaces and outer periphery of the structure 20 are double coated with sheet-like cushioning material 16 and 17,
A pipe structure 18 is hinged to the connecting end 13a of the pipe structure 13 of the original body 11 via the first hinge 3. The first hinge 3 has a structure called a so-called ratchet hinge, and the structure 20 of the seat bending part 12 is connected to the original body 11.
The structure 15 can be bent in an angular range of approximately 90°, and can be locked in any of a plurality of locking positions within that angular range. By bending the structure 20 of the seat-folding portion 12 to the limit position on the front side, the lock can be released, and the structure 20 is set on the same plane as the structure 15 of the original body 11. It is possible to return to the starting point direction.

The backwater body 41 has a structure 45 constructed by screwing a plywood plate 44 onto a pipe structure 43 which is an aggregate, and has sheet-like cushioning materials 16 and 17 on the upper and lower surfaces and the outer periphery of the structure 45. It is double coated and has an elongated shape.

The pipe structure 43 is made by joining and integrating one end of a plurality of metal pipes, and the connecting end 43a on the other end side is a free end.

The back bent portion 42 is a structure 5 formed by screwing plywood 49 onto a pipe structure 48 formed by joining metal pipes vertically and horizontally.
0, and the upper and lower surfaces and outer periphery of the structure 50 are double coated with sheet-like cushioning material 16 and 17,
A pipe structure 48 is hinged to the connecting end 43a of the pipe structure 43 of the backwater body 41 via the second hinge 6. The second hinge 6 is also called a ratchet hinge, and is designed to allow the structure 50 of the back bending portion 42 to be bent in an angle range of approximately 90° relative to the structure 45 of the backwater body 41. It can be locked in any one of multiple locking positions within that angular range. Then, by bending the structure 50 of the back bending part 42 to the limit position on the surface side, the lock can be released, and the structure 50 can be moved to the structure 4 of the back water body 41.
It is possible to return to the starting point direction set on the same plane as 5.

And the connecting end 13 of the pipe structure 13 of the original body 11
a and the connecting end 43a of the pipe groove body 43 of the backwater body 41 are connected via the third hinge 7.

The third hinge 7 also has a structure called a ratchet hinge, and is set so that the backwater body 41 can be bent toward the surface side by about 90 degrees with respect to the original body 11. That is, this third hinge 7 allows the structure 45 of the backwater body 41 to be bent with respect to the structure 15 of the original body 11 within an angular range of approximately 90° from the starting point. It is possible to lock in any of the multiple lock positions that exist within the range.

In addition, the structure 20 of the seat folding portion 12 and these structures 2
A substantially triangular structure notch region 8 that expands outward is provided between the back bending portion 42 and the structure 50 that are close to 0.

Specifically, the structures 20.50 of the seat bent portion 12 and the back bent portion 42 are formed into trapezoidal shapes with diagonal cuts on their adjacent sides, and each pipe extends up to the outer edge of each cutout end 20a, 50a. The structure 18.48 is extended. Then, a line connecting the outer edges of each structure 20.50 and both cut top ends 20a150
The generally triangular planar area surrounded by the structure a and the structure cutout area 8 is defined as a structure cutout area 8, and a hood cloth 81 is stretched over the structure cutout area 8. The outer edge of the hood cloth 81 is held by a chain 82 stretched between the ends of the pipe structures 18.48, and the inner edges of both are held by the plywood 19.4 of each adjacent structure 20.50.
9 is a tacker stopper. Then, on the upper and lower surfaces of each hood cloth 81, corrugated and flat cushioning materials 16 are arranged so that the surface from the seat folding part 12 to the front folding part 42 becomes the road surface.
．． 83 is continuous with the cushion material 16 and 17 of the seat folding part 12 and the front folding part 42 and is fastened.

Further, on the front side of the sofa-bed, grooves 9 are formed by cutting out the cushioning material 16, 17, 83 along the outer periphery. Then, an exterior material 91 that covers the surface within this groove 9
and the exterior material 92 covering the back surface of each plywood board 14.19.44.
49, respectively, and the corresponding portions of the hood cloth 81 on both sides are fastened via fasteners.

According to such a configuration, the pipe structure 13 of the original body 11
By deforming the pipe structure 43, each connection end 13a of the backwater body 41 and each connection end 43a of the pipe structure 43 of the backwater body 41 can change their positions relatively freely. Therefore, even if there is an error in the dimensions between the corresponding connecting ends 13a and 43a, when connecting the original body 11 and the backwater body 41, when connecting the seat bending part 12 to the original body 11, and when connecting the backwater body The connecting work when connecting the apron bent portion 42 to the apron portion 41 can be easily performed. Then, once connected, all the pipe structures 13, 18, 43, 48 are integrated to form a frame shape, thereby increasing the rigidity and strength of the whole.

Moreover, since plywood 14.19.44.49 is fixed to the upper surface of each pipe structure 13.18.43.48, these plywood 14.19.44.49 and the pipe structure 1
In cooperation with 3.18.43.48, structure 15.
20.45.50 The overall rigidity and strength are dramatically increased. Then, when a load acts partially on the structure 15.20.45.50, the load is applied to the plywood 14.19.44.
Since the parts are distributed by 49, there is no possibility that only frequently used parts deteriorate early.

Even if a load acts on a part of the structure 15 of the original body 11, the entire original body 11 will be pressed against the floor surface by the load, so stable installation can be achieved without the need for a special foundation etc. The state is obtained.

Moreover, since this sofa-bed is provided with a structure cutout area 8 between the seat folding part 12 and the front folding part 42, the sixth
As shown in the figure, when the backrest 4 is folded and used as a sofa, even if the seat folding part 12 is folded toward the front side and the apron folding part 42 is folded toward the front side, these parts will not work. There is no mutual interference. Moreover, the hood cloth 81 and the chain 82 stretched in the structure notch area 8 are made of cushion material 16.8
3 and the exterior materials 9, 92, the bending manner of the seat folding portion 12 and the front folding portion 42 is not limited, and takes the optimum form according to the posture of the seated person. be able to. When the seat bending part 12 and the front bending part 42 are bent, the exterior material 9 present in the structure notch area 8
, 92 and the cushioning material 16, 83 inside thereof are bent in half and protrude outward, but this protrusion 93 has a shape that is relatively strong against loads from above. Therefore, this protrusion 93 also functions as an armrest.

On the other hand, when the dust 1 and the backrest 4 are made flat and used as a bed as shown in FIG. When locked, each can be used as a pillow.

In this case, since the structure cutout area 8 is formed between the seat folding part 12 and the front folding part 42, the central part of the pillow has flexibility. Furthermore, when the seat 1 and the backrest 4 are unfolded on the floor, the chain 82 is tensed and becomes straight, so the exterior materials 9, 92 and cushioning materials 16, 83 in the structure notch area 8 correct the posture. The entire bed becomes a rectangular shape with no distortion.

Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above embodiment, and the shapes of aggregates, plates, etc. are not limited to those shown in the drawings, and can be modified as appropriate. be.

[Effects of the Invention] As detailed above, in the present invention, the structure of the seat and backrest is composed of an aggregate whose connecting end is a free end, and a plate attached to this aggregate. , the connection work when connecting the corresponding connection ends can be easily performed, and the rigidity and strength of the entire structure can be increased.

Furthermore, according to the present invention, the load applied to parts of the structure can be dispersed through the cooperation of the aggregate and the plate materials, so that early deterioration of frequently used parts can be effectively prevented. This makes it possible to reliably improve the durability of the entire sofa-bed.

Moreover, even if a load acts on a part of the original body, the entire original body is pressed against the floor surface due to the load dispersion effect of the horizontal body having the plate material. Therefore, it is possible to obtain a stable installation condition without providing a special base, and it is possible to provide a sofa-bed that is most suitable as furniture for so-called floor life.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a plan view showing the structure, FIG. 2 is a plan view of the sofa-bed, FIG. 3 is a bottom view of the sofa-bed, and FIG. IV- in the figure
5 is a sectional view taken along the line v-v in FIG. 2, FIG. 6 is a perspective view showing how it is used as a sofa, and FIG.
The figure is a perspective view showing how it is used as a bed. 1...Seat 3.6.7...Hinge 4...
- Backrest 8...Structure notch area 11...Original body 12...Seat bending part 13...Aggregate (pipe structure) 13a...Connection end 14...Plate material (plywood) 15
...Structure 20...Structure 41...Backwater body 42...Back bend 43...Aggregate (pipe structure)

Claims (1)

[Claims] A seat having a seat bending part connected to both ends of the seat body via a lockable hinge; a backrest having a back bending part connected to both ends of the back body via a lockable hinge; a substantially triangular structural cutout area expanding outward, which is provided between the structure of the seat bending part and the structure of the back bending part, and the back body is connected to the seat body. In a sofa bed whose rear edge is connected via a lockable hinge, at least each of the seat body and back body is made of an aggregate with a plurality of connecting ends as free ends, and an aggregate attached to the aggregate. What is claimed is: 1. A sofa bed characterized in that the sofa bed is constructed of two plate materials, and the corresponding connecting ends of the two structures are connected to each other via the hinge.