JPS58173515A - Sofa bed apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a backrest that can be converted into a sofa and a bed is connected and held on a base by a rotatable hinge mechanism, so that it can be used as a sofa during the day and at night. It is widely used by consumers as a convenient piece of furniture that can be used as a bed.

However, since it can be used as both a sofa and a bed, when it is converted into a bed, it has the disadvantage that the properties and functions of the bed are inferior to those of an ordinary bed.

One of the drawbacks is that the seat and backrest are separate parts, so when used in bed, a continuous depression is formed between the two in the longitudinal direction, making it difficult to lie down. Second, it may cause discomfort to the user.
The disadvantage of this is that it is necessary to rotate the hinge mechanism, and since this hinge mechanism is fixed to the outer surface of the seat and backrest, it has to be exposed to the outside. Armrests were essential.

The presence of this armrest impairs the cushioning performance at the foot of the bed, at the head end, and especially at the corner edge when the bed is in use.

The above drawbacks 1.2 will be explained based on FIGS. 1 and 2, which illustrate a conventional sofa bed.

The sofa bed has a seat part 1, a backrest part 2, and a hinge #s
3, the armrest is part 4, and the base 5 that supports it is a,
1*The structure of each of the hinge part 1 and the backrest part 2 is such that a spring structure 7 consisting of springs arranged in parallel is placed on a wooden frame 6, and a felt eye protection material 8° and urethane 7 are A protective material 8 is formed by polymerizing an elastic body 9 and covering it with an exterior body 10.
The elastic body 9 is clipped to the frame line 11 of the spring structure 7.

One end of the exterior body 10 is fixed to the back of the wooden frame 6a of the seat part 1, and the other end is fixed to the back of the wooden frame 6b of the backrest part 2. A piece of cloth 13 is sewn to the back side at the bending point 12 of the seat back part 1 and the backrest part 2, and one piece of cloth 13 is attached to the wooden frame 6a of the seat part 1. This piece of cloth 13 is fixed to the back side and the other piece is fixed to the back side of the wooden frame 6b of the backrest part 2. This cloth piece 13 hides the spring structure 7 and the wooden frames 6a and 6b from the outside. ing.

When the cloth piece 16 is fixed to the wooden frames 6a, 6b, it is tightened and fixed, so that a valley-shaped depressed portion is formed at the bending point 12 along the longitudinal direction.

A hinge mechanism 5 which is connected to a base 5 and rotates is provided on the outer surface of the seat portion 1 and the backrest portion 2 which are covered with the exterior body 10. In this hinge mechanism 6, a fixed plate 31 is fixed to the side end surface of the seat part 1, a fixed plate 62 is fixed to the side end surface of the backrest part 2, and a rotation link 63° is pivoted to the base 5. .

Therefore, the hinge mechanism is exposed to the outside, and it is impossible to attach an elastic body to the upper surface and @ surface of the hinge mechanism 6.

That is, this hinge mechanism inevitably reduces the cushioning performance when the bed is in use.

As mentioned above, the present invention has been made to improve the feeling of use when the bed is in use, and the first specific purpose is that the seat has a foldable structure between the seat part 1 and the backrest part 2. The second thing is to eliminate the depressed parts of the song.
The purpose of the seat is to maintain good crimp performance on the peripheral sides of the seat and backrest, especially on the periphery of the square twill.

In other words, 9. The first and second purposes are that even though the sofa bed is furniture that uses reeds, when the bed is in use,
It is hoped that the furniture will be comparable to a regular bed.

Embodiments of the present invention will be described below based on the drawings.

FIG. 5 is a perspective view of the sofa bed according to the present invention converted into a bed state.

As seen in this diagram, it can be seen that although it is originally a sofa bed, its appearance is no different from an ordinary bed.

FIG. 4 is a sectional view taken along the line X--X in FIG. 5. The internal structure will be explained below based on FIG.

The seat part 14 and the backrest part 15 are each formed into a box shape, and spring structures 18 and 19 are placed inside nine base bodies 16 and 17, and protective materials such as felt 20. Polymerize 21. The protective member 20.21 is fixed at its end by being wound around the frame line of the spring structure 18.19.

Further, an elastic body 2 is provided on the upper surface of the protective material 20.21.
3 is polymerized, and this elastic body 23 is formed by polymerizing base materials 16 and 17.
The seat surrounds the side plates 165, 164 and an elastic body 22 attached to the sides and has a convex cross section to round the circumferential side, and the seat has both the part 14 and the backrest part 15 continuously and integrally. It is expanded to.

It is best to use cotton as the elastic body 26. The reason for this is that there is an advantage that wrinkles are less likely to occur around the button 29 when the base body 16, 17 is properly attached to the wooden frame 161 of the base body 16.

Next, the entire seat portion 14 and backrest portion 15 are covered with an exterior body 24, and the peripheral end portion of the exterior body 240 is fixed to the back surface of the base body 16, 17.

The exterior body 24 consists of a plate-shaped upper exterior fabric 24a sewn into a frame shape and a circular lower exterior fabric 24b as shown in FIG. It is sewn together to form two boxes.

Next, the bundling structure of the base body 16, 17 and the hinge mechanism 26 is
This will be explained according to the diagram.

Although this figure shows only the base 16 taken out, the base 16 has side plates 162 on three sides of a wooden frame 161.
163 and 164 are attached and the surface facing the base 17 is opened to form a tank-like structure, but the feature of this base 16 is that the side plate 1
65, 164, by interposing a member 165 smaller than the width direction of the wooden frame 16 on the side surface of the wooden frame 16 and forming a notch 166 between the side plate 166 and the wooden frame 161. be.

The notch 166 is a space for the hinge mechanism 26 to rotate, and the hinge mechanism 26 is attached to the mounting plate 262 of the fixed plate 261.
is fixed to the back side of the wooden frame 161 and rotated using the notch 166 and the space above.

One end of the hinge mechanism 26 is pivoted to the support frame 27, and the support frame 27 is connected to the support frame 28 on the base 28.
1 and fitted with the base 28.

A bottom plate 282 is stretched over the base 28 to form a box body, and the base 28 as a whole functions as a storage box for storing things.

As described above, in the present invention, the hinge mechanism is provided so as to rotate within the base of the seat part and the backrest part, and the exterior body and elastic body of the seat part and the backrest part are integrally continuous. Since the base body and the spring structure protection material placed on the top surface are sewn to surround the top side, it eliminates the depressed area when the bed is in use, and also improves the cushioning performance of the periphery and the peripheral side. Make it good and put it on,
Although it is a sofa bed, it is possible to provide a convenient sofa bed device that has the same appearance and functions as an ordinary bed.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional Nofa bed. FIG. 2 is a sectional view taken along the Y-Y line in FIG. 1. FIG. 3 is a perspective view of the nof r bed according to the present invention. FIG. 4 is a sectional view taken along the line X--X in FIG. 6. FIG. 5 is a developed view of the upper exterior material 24a-f portions 241) of the exterior body 24. FIG. 6 is a sectional view of the exterior body 24 sewn into a box shape. FIG. 7 is a perspective view of the base body 16, showing only one side and the other half attached. Code 1.14...Seat is part 2.15...Backrest part 3.96...Hinge mechanism 4...Armrest is part 5...Base 6...Wooden frame 7.18. 19... Spring structure 8.20.21
...Protective material 9.23...Elastic body 10.24...Exterior body 11...Frame line 12...Bending point 16...Fabric piece 16...Base 161 ...Wood frame 15B PIAZ Ka! 7th Part Procedural Amendment (Method) Month Z1, 1980 t Indication of the Case 1975 Patent Application No. f≠175 λ Name of the invention Sofa bed device 瓜 Person making the amendment Relationship to the case Patent applicant Address: 31-15 Sakuragaoka-cho, Shibuya-ku, Tokyo Voluntary i Application and specification subject to amendment

Claims (1)

[Claims] In a sofa bed in which the seat part and the back part are rotatably held by a hinge mechanism and can be mutually converted into a sofa bed, the hinge mechanism is provided to rotate within the base of the seat part and the back part. The exterior body and elastic body of the seat and backrest are integrally continuous, and the upper and side surfaces, including the base body, the spring structure placed on the upper surface, and the protective material, are sewn together. A sofa bed device characterized by: