JPH07298950A - Sofa bed - Google Patents

Abstract

PURPOSE:To enable a sofa bed to be changeably used as a sofa or bed by embedding a first guide part and a second guide part on the upper plane of a base, forming a first movable by dy and a second movable body respectively on the guide parts to be freely rotatable and rotating the movable bodies. CONSTITUTION:This sofa bed is provided with the base 1, and the base 1 is provided with a rectangular placing plate 2. A pair of first guide rails 4a, 4b which form the first guide part 4 are embedded in the upper plane of the placing plate 2, and a pair of guide rails 5a, 5b which form the second guide part 5 are embedded in another side. The movable body 8 is formed on the upper plane of the first guide part 4 side, and the movable body 9 on the upper plane of the second guide part 5 side. The movable bodies 8, 9 are provided with bottom plates 11 formed in square shape of size almost the half of the base plate 2. A contact plate 12 provided with slidable glossy property is formed on the lower plane of the bottom plate 11. Also, a seat frame 21 formed from a pipe is attached on the bottom plates 11 of the movable bodies 8, 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sofa bed having a sofa function and a bed function.

[0002]

2. Description of the Related Art Sofa-beds are widely used as residential beds because they are space-efficient and convenient. However, the conventional sofa-bed has a structure in which the mattress is divided into two along the longitudinal direction to serve as a sofa cushion (seat) and a backrest (backrest).

Therefore, when used as a sofa,
In the case of a single bed, the depth of the seat becomes smaller, so the function as a sofa may not be sufficient. In addition, when used as a bed, a recess may be formed over the entire length in the longitudinal direction of the bed surface that is the dividing line of the mattress, so that the cushioning property may deteriorate.

Therefore, the applicant of the present application is Jpn.
I proposed a sofa-bed shown in Japanese Patent Publication No. 33-33. In this sofa-bed, two mattresses each having a size about half the size of the base are rotatably provided on the upper surface of a rectangular base. Each mattress is provided with an auxiliary mattress that also serves as a backrest so that the mattress can be converted into a standing state and a state in which the mattress is flush with the mattress.

Therefore, if the backrest / auxiliary mattress is erected and positioned on one side in the longitudinal direction of the base, it can be used as a sofa, and the backrest / auxiliary mattress can be laid horizontally. If you rotate the mattress and position it on both ends of the base in the longitudinal direction,
A flat surface formed by the mattress and the backrest / auxiliary mattress can be used as a bed surface.

According to such a construction, the depth dimension of the mattress is the depth dimension of the seat portion when it is used as a sofa, so that the dimension can be increased, and when it is used as a bed, two dimensions are required. Since the dividing line of the mattress is formed along the width direction at the midway portion of the bed surface in the longitudinal direction, it may be possible to use it without much concern.

By the way, in the conventional sofa bed having such a structure, a rail is provided on the upper surface of the base so that the mattress can be rotated on the base. However, the base is formed of a frame, and the upper end surface of the base supports the lower surface of the mattress. Therefore, since the lower surface of the mattress is only partially supported by the upper end surface of the frame body, the stability in the supported state is poor and the mattress is apt to rattle in the vertical direction when used as a bed or a sofa. However, there was a case where the performance of the bed or the sofa was deteriorated.

Further, since the lower surface of the mattress is only partially in contact with the upper end surface of the frame body, it is difficult to rotate the mattress together with the rattling in the vertical direction when the mattress is rotated. There was also.

[0009]

As described above, in the conventional sofa-bed, since the mattress rotatably provided on the base is only partially in contact with the base, the vertical direction There was a rattling that reduced the performance of the bed or sofa, and sometimes it was difficult to rotate it during conversion.

The present invention has been made based on the above circumstances, and an object thereof is rattling when a pair of movable bodies rotatably provided on a base is used as a bed or a sofa. It is to provide a sofa-bed that is not only difficult but also easy to rotate.

[0011]

In order to solve the above problems, the present invention provides a base, a first guide portion embedded in the upper surface of one end of the base in the longitudinal direction, and a longitudinal direction of the base. A second guide portion embedded in the upper surface of the other end portion, and a first engaging portion that slides along the first guide portion on the lower surface, are provided in a predetermined direction on the upper surface of one end portion of the base. A first movable body rotatably provided in a range of about 90 degrees and a second engaging portion that slides along the second guide portion on the lower surface, and the upper surface of the other end of the base. A second movable body which is provided adjacent to the first movable body and which is rotatable in the direction opposite to the first movable body within a range of approximately 90 degrees; A seat cushion portion provided on the upper surface side and each movable body that is provided up and down freely on one end side of the seat cushion portion. Characterized by comprising a squab which can be positioned in the longitudinally defined end regions of the base when Re is rotated in a predetermined direction.

[0012]

According to the above construction, since the first and second guide portions are embedded in the upper surface of the base, the lower surface of each movable body can be brought into contact with the upper surface of the base almost entirely. Therefore, the movable body becomes difficult to rattle in the vertical direction, and since the contact area is large, it can be smoothly rotated when the bed and the sofa are converted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The sofa-bed of the present invention shown in FIG. 1 comprises a base 1. The base 1 has a rectangular plate 2 on which a plurality of legs 3 are vertically provided on a lower surface thereof. As shown in FIG. 2, a pair of first guide rails 4a forming a first guide portion 4 on one end side in the longitudinal direction are formed on the upper surface of the placing plate 2 described above.
4b is embedded, and a pair of second guide rails 5a and 5b forming the second guide portion 5 are embedded on the other end side. That is, as shown in FIG. 4, each guide rail has a groove 2a formed on the upper surface of the mounting plate 2 and opened so that the groove does not protrude from the upper surface of the substrate 2 and is substantially flush with the mounting surface. Has been.

One guide rail 4 of each guide portion 4, 5
a and 5a are formed linearly and are provided along the longitudinal direction on the front end side in the front-rear direction of the substrate 2, and the other guide rails 4b and 5b are bent in the shape of a dogleg.
Is provided along the front-rear direction of the substrate 2 at a midway portion in the longitudinal direction.

As shown in FIG. 4, on the upper surface of the substrate 2,
A film 6 made of a synthetic resin having lubricity is stretched on both sides of each of the guide rails. Although the film 6 is partially provided in this embodiment, it may be provided over the entire upper surface of the substrate 2.

A first movable body 8 is provided on the upper surface of the substrate 2 on the first guide portion 4 side, and a second movable body 9 is provided on the upper surface of the second guide portion 5 side. . Each movable body 8,
As shown in FIG. 1, the reference numeral 9 has a bottom plate 11 formed in a square shape which is about half the size of the substrate 2. This bottom plate 1
A square contact plate 12 made of a synthetic resin having lubricity is provided on the lower surface of 1.

As shown in FIG. 4, at both ends of the contact plate 12 in the diagonal direction, that is, at the lower surfaces of the two corners, as shown in FIG.
In the second movable body 9, a roller forming a second engaging portion.
La 13 is rotatably provided.

That is, a mounting hole 12a is formed in the contact plate 12 so as to penetrate in the thickness direction, and a cap nut 14 is embedded in the mounting hole 12a from the upper surface side of the contact plate 12. One end of a roller shaft 15 is screwed into the cap nut 14. The roller 13 is rotatably provided at the other end of the roller shaft 15. In addition, the above
A pipe 16 is externally fitted to the roller shaft 15, and the pipe 16 reinforces the mounting state so that the roller shaft 15 can be swung.

As shown in FIGS. 1 and 3A and 3B, a seat frame 21 formed of a pipe is provided on the bottom plate 11 of each of the movable bodies 8 and 9. One movable member 22a of the hinge mechanism 22 shown in FIG. 5A is attached to each of both sides of the rear end of the seat frame 21. One end of a connecting shaft 23 is fitted and fixed to the other movable member 22b of the hinge mechanism 22. The pair of movable members 22a and 22b of the hinge mechanism 22 has a structure capable of being held at a predetermined rotation angle.

To the other end of the connecting shaft 23, lower end portions on both sides of a back frame 23 formed of a pipe are slidably attached. A guide pin 24a is projectingly provided on the other end of the connecting shaft 24.
Is a long hole 2 formed at both lower ends of the back frame 23.
5 is engaged. Therefore, the back frame 23 is shown in FIG.
As shown in (b), it can be slid in the direction of the arrow within a predetermined range.

A seat cushion body 26 made of urethane foam or the like, which has a square shape substantially the same as that of the bottom plate 11, in a state of covering the seat frame 21 on the upper surface of the bottom plate 11.
Is provided. On the back side of the seat cushion body 26, as shown in FIG. 5C and FIG. 1, slits 27 are formed which are open on the back and top surfaces of the seat cushion body 26. The slit 27 has the back frame 2 described above.
The lower ends of both sides of 3 are rotatably sandwiched.

A back cushion member 28 is provided at a portion of the back frame 23 protruding from the slit 27. The back cushion body 28 has a substantially trapezoidal cross section, and its lower end surface is joined to the upper surface of the seat cushion body 26.

The back frame 23 is the seat frame 21.
On the other hand, it is slidable in the direction shown by the arrow in FIG. Therefore, the back cushion body 28 can be raised as shown by the chain line in FIG. 1 and can be laid down to the back side of the seat cushion body 26 until it is in a substantially horizontal state. If it is slid in the direction of joining to the seat cushion body 26, the cushion body 26,
28 can form one plane.

The pair of rollers 13 attached to the movable bodies 8 and 9 have a rotation angle of 0 degree when the movable bodies position the back cushion body 28 rearward of the seat cushion body 26 in the front-rear direction. At this time, as shown by A and A'in FIG. 2, it is located at one end of the pair of guide rails 5a and 5b (only the second guide portion 5 is shown).

From this state, when the movable bodies 8 and 9 are rotated in the directions indicated by the arrows, that is, in the opposite directions, the roller 13 moves from the positions A and A'to B and B'in accordance with the rotation angle. After that, the rollers 13 move to C and C ', and when the rotation angle becomes approximately 90 degrees, the roller 13 is located at the other end of the guide rails 5a and 5b indicated by D and D'. .

Next, the case where the sofa bed having the above-mentioned structure is used in various forms will be described with reference to FIGS. 6 (a) to 6 (c). FIG. 6A shows a case where the sofa is used as a sofa, and in this case, the first movable body 8 and the second movable body 9 have their back cushion bodies 28 on the seat cushion body 26. It is positioned on the rear side of the base 1 while being positioned on the upper surface of the rear end portion. As a result, the seat cushion bodies 26 of the first movable body 8 and the second movable body 9 form a horizontally long plane, and the pair of back cushion bodies 28 are arranged in a line. It can be used as a sofa.

FIG. 6B shows only the first movable body 8 as the base 1.
The state where the movable bodies 8 and 9 are rotated by about 45 degrees is shown above, and according to this state, the movable bodies 8 and 9 can be used as separate sofas. That is, one sofa shown in FIG.
Can be used as two sofas.

FIG. 6 (c) shows the first movable body 8 and the second movable body 9 in the opposite directions from the state shown in FIG. 6 (a).
The figure shows a state in which the bed is rotated by 0 ° and converted into a bed. That is, when the movable bodies 8 and 9 are rotated 90 degrees in the opposite directions shown by the arrows in FIG. 2, the back cushion bodies 28 of these movable bodies 8 and 9 are located at both longitudinal ends of the base 1. In this state, the back cushion body 28 of the first movable body 8 is tilted backward so as to form a predetermined angle, and the back cushion body 28 of the second movable body 9 is horizontally tilted so as to be flush with the seat cushion body 28. .

As a result, a bed surface is formed by the upper surface of the seat cushion body 26 of the pair of movable bodies 8 and 9 and the surface of the back cushion body 28 of the second movable body 9, so that the sofa moves from the bed to the bed. It can be converted and used. At this time, the back cushion body 28 of the first movable body 8 can be used as a headrest.

The back cushion body 2 of the first movable body 8
If 8 is also laid horizontally, its upper surface can be used as a bed surface. According to the sofa-bed having the above-described configuration, the first and second movable bodies 8 and 9 have substantially the entire bottom surface thereof as the base 1.
Received on the upper surface of the substrate 2. Therefore, since the movable bodies 8 and 9 are difficult to rattle in the vertical direction, they can be used in a stable state as a sofa or a bed. As a result, the performance of the sofa or bed can be improved.

Moreover, since the entire lower surfaces of the movable bodies 8 and 9 are in contact with the upper surface of the substrate 2, the movable bodies 8 and 9 are
Can be rotated smoothly. Therefore, the work of rotating the movable bodies 8 and 9 to convert them into a sofa or a bed can be performed easily and quickly.

A smooth film 6 is formed on the upper surface of the substrate 2.
Is provided, and the sliding contact plate 12 is similarly provided on the lower surfaces of the movable bodies 8 and 9. Therefore, the movable bodies 8 and 9 can be smoothly rotated even by these contacts, so that the work at the time of conversion between the sofa and the bed can be further facilitated.

[0033]

As described above, according to the present invention, the first guide portion and the second guide portion are embedded in the upper surface of the base, and the seat cushion portion and the seat cushion portion are provided in each guide portion. A first movable body and a second movable body, each of which is composed of a back cushion portion that is provided up and down freely, are rotatably provided, and by rotating these movable bodies, the movable body can be converted into a sofa or a bed for use. I did it.

Therefore, the movable body can be rotatably provided with almost no rattling in the vertical direction by contacting the entire lower surface of the movable body with the upper surface of the base body, so that it is stable and good as a sofa or bed. It can be used in any state. In addition, since the entire lower surface of each movable body is supported by the upper surface of the base, the movable body can be easily rotated, so that the operability at the time of conversion is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a plan view in which one movable body is also removed.

3 (a) and 3 (b) are explanatory views showing a frame similarly provided on a movable body.

FIG. 4 is an enlarged cross-sectional view showing an engaged state between a roller provided on the movable body and a guide rail provided on the base.

5 (a) is a side view of the hinge mechanism, FIG. 5 (b) is a side view of the same taken along line XX in FIG. 5 (a),
(C) is a top view of the slit part provided in the seat cushion part.

6A to 6C are perspective views showing different usage patterns.

[Explanation of symbols]

1 ... Base, 4 ... 1st guide part, 5 ... 2nd guide part,
8 ... 1st movable body, 9 ... 2nd movable body, 13 ... Roller,
26 ... Seat cushion part, 28 ... Back cushion part.

Claims (1)

[Claims] 1. A base, a first guide portion embedded in the upper surface of one end of the base in the longitudinal direction, and a second guide portion embedded in the upper surface of the other end of the base in the longitudinal direction. A first engaging portion that slides along the first guide portion is provided on the lower surface, and the first engaging portion is provided on the upper surface of one end portion of the base so as to be rotatable in a predetermined direction in a range of approximately 90 degrees. A movable body and a second engaging portion that slides along the second guide portion on the lower surface, and is provided adjacent to the first movable body on the upper surface of the other end of the base. At the same time, the second movable body provided rotatably in the range of about 90 degrees in the opposite direction to the first movable body, the seat cushion portion provided on the upper surface side of each movable body, and the seat cushion portion It is provided on one end side so that it can be undulated, and when each movable body is rotated in a predetermined direction, both sides of the base in the longitudinal direction are rotated. A sofa-bed comprising a back cushion part that can be located on the end side.