JPS63257512A - Sofa bed - 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] [Industrial Application Field] 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. be.

[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. It is known what has been set up. By placing the seat on the floor and raising the backrest, this becomes a sofa, and by lowering the backrest to the floor, it becomes a bed.

Based on this structure, there is also a structure in which both end portions of the seat and backrest are configured to be bendable, so that the bent portions can be used as armrests of a sofa or pillars of a bed. being developed.

[Problems to be solved by the invention] However, since the conventional device is based on a flat state used as a bed, the seat folded part and the back folded part on the side adjacent to it are not in a flat state. Both structural members are arranged in parallel and close to each other to the extent that they do not interfere with each other. Therefore, when the backrest is folded up and used as a sofa, if the seat folding part is folded and the back folding part is folded towards the surface side, the two will interfere and it will not be possible to make them flush. It becomes impossible.

In other words, if either the seat folding part or the back folding part is bent to the desired position, the degree of bending of the other is limited, so the manner of bending is limited, and it is difficult to find the optimal one that matches the purpose of use. Sometimes it is difficult to obtain a good posture.

In particular, in the case where a general ratchet hinge is used in each structural member joining part, the lock cannot be released unless each bent part is bent to the final bending position. Therefore, if the seat bending part and the back bending part are bent until the structural members interfere with each other, it becomes impossible to unlock all the ratchet hinges, and it becomes impossible to return the bed to its flat state. This can sometimes lead to situations like this.

In addition, since the structural materials of the seat folding part and the back folding part are placed close to each other, when the seat folding part and the back folding part are bent toward the front side and used as a pillow part, etc., it is necessary to The above-mentioned structural materials often give the parts a relatively hard feel.

Furthermore, when using the conventional one as a sofa,
In order to enable the seat folding part and the back folding part to be bent independently, they are usually formed in a separate state. Therefore, a gap inevitably arises between the two,
The appearance is not necessarily good.

The present invention aims to solve these problems.

[Means for Solving the Problems] In order to achieve the above objects, the present invention employs the following configuration. That is, the sofa-bed according to the present invention has a seat formed by connecting the folded seat portions to both ends of the original body via lockable hinges, and hinges to which the folded back portions can be locked to both ends of the backwater body. A sofa-bed comprising: a backrest that is connected via a backrest and has a backwater body hinged to the rear edge of the original body, the structural material of the seat folding portion; A substantially triangular structural material notch area expanding outward is provided between the structural material of the seat bending portion and the exterior material of the back bending portion are continuous. Features.

[Function] According to this configuration, first, the seat is placed on the floor and the backrest is raised to become a sofa. In this case, if the folded portion of the seat is bent toward the front side and raised by a required angle, the bent portion becomes an armrest. Furthermore, in this state, if the back bends provided at both ends of the backrest are bent toward the front side, there will be a structural material cutout area between them, so the back bends and seat bends will interfere. They can be positioned on the same plane at a desired bending angle without having to do so.

By providing a structural material notch region having the above-mentioned shape, even from a state in which both the seat folded portion and the back folded portion are bent, the seat folded portion or the back folded portion It becomes possible to bend even deeper.

Therefore, even if a ratchet type hinge is used as the hinge, the problem that the lock cannot be released will not occur.

Moreover, by making the dust and the backrest all flat, it can be used as a bed.

In this case, by bending each one of the seat folding portion and the back folding portion toward the surface by a desired angle and locking the folded portion, that portion can be used as a pillow. At this time, the central portion of the pillow corresponding to the structural material notch area becomes flexible.

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

As shown in FIGS. 1 and 2, this sofa bed has a seat 4 formed by connecting seat folding parts 2A and 2B to both ends of an original body 1 via a lockable first hinge 3. and backwater body 5
A backrest 8 is provided at both ends of which are connected back bending parts 6A and 6B via a lockable second hinge 7.

The original body 1 has a structural member 12 constructed by screwing plywood 11 onto pipe frames 9 and 10 arranged vertically and horizontally, and a sheet-like cushioning material (not shown) is placed around the outer periphery of the structural member 12. It has an elongated shape and has an exterior material 13 attached thereto.

The seat bending parts 2A and 2B, like the seat body 1, have a structural member 17 made by screwing plywood 16 onto pipe frames 14 and 15 arranged vertically and horizontally, and the outer periphery of the structural member 17 The exterior material 18 is covered with a sheet-like cushioning material (not shown) interposed therebetween, and the structural material 17 is hinged to the structural material 12 of the vehicle seat body 1 via the first hinge 3. . The first hinge 3 has a structure called a so-called ratchet hinge, in which the structural member 17 is connected to the structural member of the seat vehicle body 1.
It is possible to perform a bending operation in an angular range of about 90° with respect to 2, and it can be locked in any of a plurality of locking positions that exist within that angular range. By bending the structural member 17 to the limit position on the front side, the lock can be released, and the structural member 17 can be returned to the starting point set on the same plane as the structural member 12. is now possible.

The backwater body 5 has pipe frames 19.2 arranged vertically and horizontally.
0 has a structural member 22 formed by screwing plywood 21,
The outer periphery of the structural member 22 is covered with an exterior material 23 via a sheet-like cushioning material (not shown).

The back bent portions 6A and 6B are structural members 27 formed by screwing plywood 26 onto pipe frames 24 and 25 arranged vertically and horizontally.
, and the outer periphery of the structural material 27 is covered with an exterior material 28 via a sheet-like cushion material (not shown),
The structural member 27 is hinged to the structural member 22 of the backwater body 5 via the second hinge 7. The second hinge is also called a ratchet hinge, and is capable of bending the structural member 27 with respect to the structural member 22 of the backwater body 5 within an angular range of about 90°. It is possible to lock in any of the multiple lock positions that exist within the range. By bending the structural member 27 to the limit position on the front side, the lock can be released, and the structural member 27 can be returned to the starting point set on the same plane as the structural member 22. It is now possible to do so.

Further, the structural member 12 of the seat body 1 and the structural member 22 of the backwater body 5 are connected via a third hinge 29. The third hinge 29 has a structure also called a ratchet hinge, and is set so that the backwater body 5 can be bent toward the surface side by about 90 degrees with respect to the seat body 1. That is, this third hinge 29 allows the structural member 22 of the backwater body 5 to be attached to the seat body 1.
The structural member 12 can be bent in an angular range of about 90 degrees from the starting point, and can be locked at any of multiple locking positions within that angular range. ing. And the structural material 2 of the backwater body 5
By bending 2 to the limit, the hinge 29 can be unlocked.

Then, the structural members 17 of the seat bent portions 2A, 2B and the back bent portion 6A adjacent to these structural members 17.

A substantially triangular structural material notch area S expanding outward is provided between the structural material 27 of 6B and the adjacent structural material 17.
．． A flexible strip, for example a chain 30, is stretched between the outer edges of the chain 27. Specifically, the seat bending portions 2A, 2
Structural material 17 of B and structural material 27 of back bent portions 6A and 6B
are formed into a trapezoid shape with diagonal cuts on adjacent sides.

Each pipe frame 15.25 is extended to the outer edges 31a, 32a of each notch end 31.32, and the chain 30 is stretched between the ends thereof. Then, a substantially triangular planar portion surrounded by each of these chains 30 and the two large cut ends 31 and 32 is placed in the structural material cutout area S.
It is said that In these structural material notch areas S, seat bending portions 2 are provided.
The surface from A and 2B to the back bends 6A and 6B is the road surface.
The exterior materials 18 and 28 are continuously covered with each other via a cushioning material (not shown) so that the exterior materials 18 and 28 are covered with each other in a continuous manner.

With such a configuration, the seat 4 can be placed on the floor and the backrest 8 can be raised to create a sofa.

In this case, as shown in FIGS. 2 and 3, if the seat bent portions 2A, 2B of the seat 4 are bent toward the surface side and erected by the required angle, the seat bent portions 2A, 2B will be placed on the armrest. become. Furthermore, in this state, when the sex bending parts 6A and 6B provided on both sides of the backrest 8 are bent toward the surface side, the sex bending parts 6A and 6B,
6B makes it possible to hold the seated person from the side, making the entire structure compact and occupying a small area. At that time, a structural material notch area S that expands outward is provided between the structural material 17 of the seat bending portions 2A and 2B and the structural material 27 of the sexual bending portions 6A and 6B. , those side structural members 1
7.27 without interfering with each other, the seat bending part 2A,
2B and the sexual bending part 6A16B can be bent.

In addition, when such a form is adopted, the exterior material 18.28 existing in the structural phase notch area S and the sheet-like cushion material filled inside thereof are folded in half and protrude outward. However, since this protrusion R has a shape that is relatively strong against loads from above, this protrusion R also functions as an armrest.

Since the chain 30 stretched between the side structural members 17 and 27 has flexibility, it follows changes in the shape of the exterior members 18 and 28 and the cushioning material. However, if it is like this, when using it as a sofa,
The problem that the bending mode is limited is eliminated, and the desired optimal posture can be obtained. Moreover, since the structural members 17.27 do not interfere with each other, the hinge 3.7
．． No problem will occur even if a simple ratchet type is used, which cannot be unlocked unless it is bent in two to the final position.

On the other hand, by making the dust 4 and the backrest 8 all flat, it can be used as a bed. in this case,
As shown in FIG. 4, it can be used as a pillow by bending and locking one of the seat bending parts 2A and the sex bending part 6A by a desired angle toward the surface. In this case, since the structural material cutout area S is formed between the seat bending parts 2A, 2B and the sex bending parts 6A, 6B, the central part of the pillow is flexible and hard. It can relieve the feeling.

In addition, the exterior material 18 of the seating bending parts 2A and 2B and the sexual bending part 6A
, and the exterior material 28 of 6B are provided in a continuous manner, so there is no gap between them despite the structural material notch area S, and the external appearance is integrated and looks good. Become.

Note that the present invention also includes a structure in which no chain or the like is stretched between the structural material of the seat bending portion and the structural material of the sexual bending portion. However, as in the embodiment, the side structural member 1
7. If a chain 30 is stretched between the outer edges of 27 and the chain 30 is set so that it is tensioned when the bed is used, an effect can be obtained that the outer shape can be adjusted. It will be done. In other words, in the case where the chain 30 is not provided, if the exterior material 18, 28 or cushion material in the part corresponding to the structural material notch area S becomes bent due to long-term use as a sofa, When unfolded and used as a bed, dents and distortions tend to occur in that part.

On the other hand, in the case where the chain 30 is provided, when the seat 4 and the backrest 8 are unfolded on the floor, the chain 30
becomes tense and becomes a straight line. Therefore, the exterior material 18
．． 28 and the cushion material are corrected in their posture by the chain 30, and the entire bed becomes rectangular without distortion.

Moreover, it goes without saying that a rope or a band-like strip may be used instead of a chain.

[Effects of the Invention] As described in detail above, the present invention provides a structure between the structural material of the seat bending portion provided at both ends of the seat and the structural material of the sexual bending portion provided at both ends of the back. In addition to providing a structural material notch area, the exterior material in that area is provided continuously. Therefore, the seat bending part and the sexual bending part can be freely bent to obtain the optimum posture without causing interference between the structural members, and the usability can be greatly improved. The space between the seat bending part and the sex bending part is flexible, eliminating the hard feel and eliminating gaps in appearance, making it possible to provide a sofa-bed with a good appearance. .

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being a plan view and FIG.
The figure is a partial perspective view with the exterior material and cushioning material omitted, and Figure 3 is a perspective view showing how it is used as a sofa.
FIG. 4 is a perspective view showing how it is used as a bed.

Claims (1)

[Claims] A seat with a seat bending part connected to both ends of the seat body through a lockable hinge, and a back body with a back bending part connected to both ends of the back body with a lockable hinge. and a backrest hinged to the rear edge of the seat body, the sofa bed comprising: a backrest that is hinged to the rear edge of the seat body, the sofa bed expanding outward between the structural material of the seat folding portion and the structural material of the back folding portion; What is claimed is: 1. A sofa bed characterized in that a substantially triangular structural material cutout area is provided, and the exterior material of the seat folded portion and the exterior material of the back folded portion are continuous.