JPH0626525B2 - Soft Bed - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sofa bed that can be used as a floor-standing type sofa bed by changing the bent state of each part.

[Prior Art] As a sofa bed of this type, an elongated seat and a backrest having an elongated shape similar to this seat are provided, and the backrest is connected to a rear edge of the seat via a lockable hinge. Things are known. Then, this one becomes a sofa by placing the seat on the floor and raising a backrest, and becomes a bed by tilting the backrest to the floor surface.

Then, based on such a structure, further developed is one in which both end portions of the seat and the backrest are configured to be bendable, and the bent portion can be used as an armrest of a sofa or a pillow portion of a bed. Has been done.

[Problems to be Solved by the Invention] However, since the conventional one is based on the flat state used as a bed, the seat bending portion and the back bending portion on the side adjacent thereto are not flat. The two structural materials are arranged close to each other in parallel so as not to interfere with each other. Therefore, when the backrest is raised and used as a sofa, if the seat fold is bent and the back fold is bent toward the front side, they interfere with each other and it is not possible to make them flush. It will be possible.
That is, if either the seat bending portion or the back bending portion is bent to a desired position, the bending degree of the other is limited. Therefore, the bending mode is limited, and the optimum bending condition that matches the purpose of use is limited. Sometimes it is difficult to obtain a posture.

In particular, in the case where a general ratchet hinge is used for each structural material joint portion, the lock cannot be released unless each bent portion is once bent to the final bent position. Therefore, if the seat bending portion and the back bending portion are bent until the structural materials interfere with each other, it becomes impossible to unlock all ratchet hinges, and it becomes impossible to return to a flat state as a bed. It may lead to the situation.

Also, since the structural material of the seat fold and the back fold are close to each other, when the seat fold and back fold are bent to the front side and used for pillows, etc. The part often gives a relatively hard feel due to the above structural material.

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

As a measure for solving such a problem, a substantially triangular structural material notch area that expands outward is provided between the structure of the seat bent portion and the structure of the back bent portion, and ,
It is conceivable that the exterior material of the seat bent portion and the exterior material of the back bent portion are continuous.

However, in the case of only this, when it takes the form of a bed, the exterior material corresponding to the structural material cutout area loses support, and that part is recessed inward and the external shape is indefinite. There is a problem that becomes.

The present invention aims to solve such problems.

[Means for Solving Problems] The present invention adopts the following configurations in order to achieve the above objects. That is, the sofa bed according to the present invention has a seat in which seat bending portions are connected to both ends of the seat body via lockable hinges, and a hinge capable of locking the back bending portions at both ends of the back body. A sofa bed comprising a backrest, the back body of which is hinged to the rear edge of the seat body, the back body of which is connected to the seat body, the structural material of the seat bending portion, and the back bending portion of the seat bending portion. A substantially triangular structural material notch area that expands outwardly is provided between the structural material and the chain is stretched only between the outer edge of the structure of the seat bending part and the outer edge of the structure of the back bending part. The exterior material of the seat bending portion and the exterior material of the spine bending portion are continuously provided, and the chain is set so as to be tense when it takes the form of a bed. And

[Operation] According to such a configuration, first, the seat is placed on the floor, and the backrest is erected so that the sofa becomes a sofa. Then, in this case, if the seat bent portion of the seat is bent to the front surface side and is raised by a required angle, the bent portion becomes an armrest. Further, in that state, if the back folding parts provided at both ends of the backrest are bent to the front side, there is a structural material notch area between them, so the back folding part and the seat folding part interfere with each other. Without doing so, they can be positioned on the same plane at a desired bending angle. Further, when the structural material notch region having the above-described shape is provided, even when the seat bending portion and the back bending portion are both bent in this manner, the seat bending portion or the back bending portion is formed. It is possible to fold it further deeply. Therefore, even if a ratchet type hinge is used as the hinge, the lock cannot be unlocked, which is not a problem.

Further, by making the seat and the backrest all flat, it becomes possible to use as a bed. In this case, one of the seat bending portion and the back bending portion is bent toward the surface side by a desired angle and locked, so that the portion can be used as a pillow. At this time, the central portion of the pillow corresponding to the structural material cutout area has flexibility.

Moreover, in the present invention, the chain is stretched at the above-mentioned position, and when the chain is taken as a bed, the chain is tensioned, so that the exterior material corresponding to the structural material notch region supports. It is possible to solve the problem that the part is lost and is depressed inward. That is, since the chain does not elastically expand further in a tensioned state, it is possible to reliably support the contour portion of the exterior material corresponding to the structural material cutout area from the inside, and the outer shape Disturbance can be effectively prevented. Since this chain is stretched only between the outer edges of the structural material, the flexibility of the structural material cutout area that supports the head when used as a bed is not impaired, and This chain does not become a resistance when folded. In other words, the exterior material existing in the notched area of the substantially triangular structural material that expands outwards requires a small radius of curvature when the backrest is bent to bend the back bending portion or seat bending portion. To be done. In particular, in the inner part of the structural material cutout region, it is easy for extreme bending to be exerted or shearing force to act, and it is said that the member supporting the exterior material is embedded in this inner part. The presence of the member causes a great resistance to the bending operation. On the other hand, in the case of the present invention, the chain is provided only in the outer edge portion of the structural material notch region in which only a relatively gentle bend is required.
The problem that this chain becomes a resistance against bending motion does not occur.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, this sofa bed is provided with a seat 4 formed by connecting seat bending portions 2A and 2B to both ends of a seat body 1 via a lockable first hinge 3. , Back body 5
The backrest 8 is formed by connecting the back bent portions 6A and 6B to each other through second hinges 7 that can be locked.

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

Similar to the seat body 1, the seat bent portions 2A and 2B have a structural member 17 formed by screwing a plywood 16 onto vertically and horizontally arranged pipe frames 14 and 15, and an outer periphery of the structural member 17 The exterior material 18 is covered with a sheet-like cushion material (not shown), and the structural material 17 is hinged to the structural material 12 of the seat body 1 via the first hinge 3. . The first hinge 3 has a structure referred to as a so-called ratchet hinge, and the structural member 17 is the structural member 1 of the seat body 1.
The bending operation can be performed in an angle range of about 90 ° with respect to 2, and the lock can be performed at any of a plurality of lock positions existing in the angle range. By bending the structural member 17 to the limit position on the front surface side, the lock can be released, and the structural member 17 is returned to the starting point direction set on the same plane as the structural member 12. You can do it.

The spine body 5 includes pipe frames 19 and 2 arranged vertically and horizontally.
0 has a structural material 22 formed by screwing plywood 21 onto
The exterior material 23 is attached to the outer periphery of the structural material 22 via a sheet-like cushion material (not shown).

The back bending portions 6A and 6B are structural members 27 formed by screwing a plywood 26 onto pipe frames 24 and 25 arranged vertically and horizontally.
And the exterior material 28 is covered on the outer periphery of the structural material 27 through a sheet-like cushion material (not shown),
The structural material 27 is hinged to the structural material 22 of the back body 5 via the second hinge 7. The second hinge is also referred to as a ratchet hinge, and is configured to allow the structural member 27 to perform a bending operation with respect to the structural member 22 of the back main body 5 in an angle range of about 90 °. It is possible to lock at any of a plurality of lock positions existing in the range. Then, the lock can be released by bending the structural member 27 to the limit position on the front surface side, and the structural member 27 can be returned to the starting point direction set on the same plane as the structural member 22. You can do it.

Further, the structural material 12 of the seat body 1 and the structural material 22 of the back 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 back body 5 can be bent to the front side by about 90 ° with respect to the seat body 1. That is, the structural material 22 of the back body 5 is moved to the seat body 1 by the third hinge 29.
The structural member 12 can be bent in an angle range of about 90 ° from the starting point, and can be locked at any of a plurality of lock positions existing in the angle range. ing. Then, the structural material 2 of the back body 5
The hinge 29 can be unlocked by bending 2 to the limit point.

The structural members 17 of the seat bent portions 2A and 2B and the structural members 2 of the back bent portions 6A and 6B adjacent to these structural members 17 are also provided.
7, a substantially triangular structural material notch S that expands outward
And a flexible chain 30 is stretched between the outer edges of the adjacent structural members 17 and 27. Specifically, the structural members 17 of the seat bent portions 2A and 2B and the structural members 27 of the back bent portions 6A and 6B are formed in trapezoidal shapes that are obliquely cut off on the adjacent sides. The pipe frames 15 and 25 are extended to the outer edges 31a and 32a of the notched ends 31 and 32, and the chain 30 is stretched between the ends thereof. That is, this chain 30
The outer edges of the structural members 17 of the seat bent portions 2A and 2B and the back bent portion 6
It is stretched only between the outer edges of the structures 27 of A and 6B. The structural material notch S is defined by the substantially triangular portion of the plane formed by surrounding each chain 30 and the notches 31 and 32. In these structural material cutout areas S, seat bending portions 2A, 2B to back bending portion 6
The exterior materials 18 and 28 are continuously attached to each other through a cushion material (not shown) so that the surfaces A and 6B are substantially flush with each other.

With such a configuration, the seat 4 is placed on the floor, and the backrest 8 is raised to form a sofa. In this case, as shown in FIGS. 2 and 3, the seat bent portion 2A of the seat 4 is
If 2B is bent to the surface side and raised up to a required angle, the seat bent portions 2A and 2B become armrests. Further, in that state, when the back folding portions 6A and 6B provided on both sides of the backrest 8 are bent to the front side, the back folding portions 6A and 6B can hold the seated person from the side, and Will be a compact one with a small occupied area. At that time, the structural members 17 of the seat bent portions 2A and 2B and the back bent portions 6A and 6B
Since the structural material notch S that expands outward is provided between the structural material 27 of B and the structural material 27 of B, the seat bending portions 2A, 2B are provided without interfering with both structural materials 17, 27. The back bending portions 6A and 6B can be bent. When such a configuration is adopted, the exterior materials 18 and 28 existing in the structural material cutout area S and the sheet-like cushion material filled in the exterior material are folded in two and protrude outward. However, since the projecting portion R has a shape that is relatively strong against a load from above, the projecting portion R also functions as an armrest or the like.

Chain 30 stretched between both structural members 17 and 27
Has flexibility, and therefore follows the shape changes of the exterior materials 18, 28 and the cushion material. Then,
If such a thing is used, when using it as a sofa, the trouble that the mode of bending is limited will be solved and a desired optimal posture can be obtained. Moreover, since the structural members 17 and 27 do not interfere with each other, there is no problem even if the hinges 3, 7 and 29 are simple ratchet type ones that cannot be unlocked unless bent to the final position. Does not happen.

On the other hand, by making the seat 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 bent portion 2A and the back bent portion 6A toward the front side by a desired angle. In this case, since the structural material cutout area S is formed between the seat bent portions 2A, 2B and the back bent portions 6A, 6B, the central portion of the pillow becomes flexible and hard. You can soften the feeling.

In addition, the exterior material 18 of the seat bent portions 2A and 2B and the back bent portion 6
Since the exterior materials 28 of A and 6B are continuously provided,
Despite the provision of the structural material cutout area S, there is no gap between them, and the appearance is integrated and the appearance is good.

Moreover, the chain 3 is provided between the outer edges of the structural members 17 and 27.
When 0 is stretched and it takes the form of a bed,
Since this chain 30 is set to be tense,
The effect that the outer shape can be adjusted can be obtained. That is, in the case where the chain 30 is not provided, when the exterior materials 18, 28 and the cushion material of the portion corresponding to the structural material cutout area S are bent due to long-term use as a sofa, they are developed into a flat shape. Then, when it is tried to use it as a bed, the portion is likely to be dented or distorted.

On the other hand, in the case where the chain 30 is provided, when the seat 4 and the backrest 8 are deployed on the floor, the chain 30
Becomes tense and becomes straight. Therefore, the exterior material 1
The posture of 8, 28 and the cushioning material is corrected by the chain 30 so that the entire bed becomes a rectangular shape without distortion.

[Advantages of the Invention] As described above in detail, the present invention is provided between the structural members of the seat bent portions provided at both ends of the seat and the structural members of the back folded portions provided at both ends of the back. In addition to the structural material notched area, the exterior material of that portion is continuously provided. Therefore, the seat bending portion and the back bending portion can be freely bent without causing interference between the structural members, and an optimal posture can be obtained, and usability can be greatly improved. Further, between the seat bent portion and the back bent portion, there is flexibility, and it is possible to provide a sofa bed having a good appearance because a rigid feeling can be eliminated and a gap in appearance is eliminated. Moreover, in the present invention, since the chain is stretched around the outer edge portion of the structural material cutout area, the contour shapes of the exterior material and the cushion can be corrected by this chain, and the entire bed is not dented or distorted. can do. Moreover, since the chain is provided only on the outer edge portion, the flexibility of the cutout region of the structural material that supports the head when used as a bed is not impaired, and furthermore, when folding this chain. Has an exceptional effect that it does not become a resistance.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a plan view and FIG.
FIG. 3 is a partial perspective view showing an exterior material and a cushion material omitted, and FIG. 3 is a perspective view showing a mode of use as a sofa.
FIG. 4 is a perspective view showing a mode of use as a bed. 1 ... seat body, 2A, 2B ... seat bent portion 3 ... first hinge, 4 ... seat 5 ... back body, 6A, 6B ... back bent portion 7 ... second hinge, 8: Backrest 12: Structural member of seat body, 17: Structural member of seat bent portion 18: Exterior material, 22: Structural member of back main body 27: Structural member of back bent portion, 28 ... … Exterior material 30 …… Chain, S… Structural material notch area

Claims (1)

[Claims] 1. A seat having bent seats connected to both ends of a seat body via lockable hinges, and a back bent part connected to both ends of a back body via lockable hinges. What is claimed is: 1. A sofa bed comprising a back body in which the back body of which becomes a butterfly is attached to the rear edge of the seat body, wherein A substantially triangular structural material notch area that expands toward the side is provided, and a chain is stretched only between the outer edge of the structure of the seat bending part and the outer edge of the structure of the back bending part. A sofa bed, characterized in that the exterior material of the portion and the exterior material of the back-folded portion are made continuous and are set so that the chain becomes tense when it takes the form of a bed.