JPS6022922B2 - Sofa bed equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a sofa bed that is convertible between a sofa and a bed.

Conventionally, this type of sofa bed has a seat part and a foldable backrest part connected and held on a base by a hinge mechanism that can be rotated freely, and the hinge mechanism of the sofa bed is shown in Fig. 1. As shown in Fig. 2, the armrest is functionally fixed on the outer surface of the winch part and the backrest part and is exposed to the outside as a whole, so the existence of an armrest part to hide the hinge mechanism is essential.

You can improve the appearance by attaching armrests.

However, this exposed hinge mechanism easily collects dust, and careless operation may cause objects or parts of the body to become trapped. This made it impossible to use the bed in the same way as a regular bed.

Furthermore, in recent years, the way sofa beds are used indoors is to fully fulfill the functions and appearance of both sofas and beds. An important technical issue that needed to be solved was to incorporate this into the seat and backrest.

As a result of intensive research, the present inventor succeeded in incorporating a hisoji mechanism.

Therefore, in the present invention, by housing the hinge mechanism in the seat part and the backrest part and enclosing the elastic exterior material as a whole, the bed is comparable in function and appearance to ordinary beds. DESCRIPTION OF THE PREFERRED EMBODIMENTS A sofa bed device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an external perspective view of the sofa bed according to the present invention, in which a seat portion 2 and a backrest portion 3 are mounted on a base 1.

As shown in FIG. 3, the seat part 2 and the backrest part 3 each have a fixing plate 4 of a hinge mechanism fixed to their ends, and a rotating link 5,
6 is rotatably held by being pivotally attached to a support frame 7, and the support frame 7 is fixed to a receiver 8 of the base 1 by dropping it into a metal fitting.

The seat part 2 and the backrest part 3 are each provided with a spring body 10 formed by arranging springs in parallel on a base body 9 as shown in FIGS. 4 and 5, and the upper surface of this spring body 10 is covered with felt or the like. A protective material il is applied, and an elastic body 12 such as urethane foam is further polymerized.

The elastic body 12 covers the side plate 14 of the t-base body 9 and the cushion wing 5 attached to the side plate 1, and its toe end is clipped to the frame line 16' of the spring body IQ.

The exterior material 13 covers the side plate 4 and the cushion body 15 together with the elastic body 12, and has one end fixed to the back surface of the seat base 9b and the other end fixed to the back surface of the back seat base ga, so that the seat can be seated. Covering cloth 17 on the back side at the bending point of section 2 and back section 3
One half of this covering cloth 17 is attached to the back side of the back base ga, and the other half is fixed to the back side of the seat base 9b, so that the spring conductor 10 and the inner filling are hidden from view. There is. Next, the noteworthy attachment aspect of the hinge mechanism of the present invention will be explained with reference to FIGS. 4 and 5.

FIG. 4 is a plan view of the sold-out base 9a and the seat base 9b facing each other, and FIG. 5 is a perspective view of only one base 9, with a hinge mechanism attached only to one of the left and right ends. The state is illustrated.

The base body 9 is formed into a substantially box shape by a wooden frame 18 on which the spring body 10 is placed, longitudinal side plates 19 and lateral side plates 20 provided on three sides of the wooden frame 18.
A member 22 for forming a defective portion 21 is provided between the frame 18 and the side surface of the wooden frame 18.

The notch 21 is provided to provide a space large enough for the hinge mechanisms 4, 5, and 6 to rotate, and the mounting piece 41 of the fixed plate
The p-hinge mechanism, which is fixed to the back surface of the wooden frame 18, rotates within the working part 21 and its upper space, and its movement is protected by the side plate 201.

Therefore, the hinge mechanism is not exposed to the outside, and no external objects come into contact with it and impede rotation. The greatest feature of this invention is that the hinge mechanism is rotated within the notch 21 and the space formed thereby. Therefore, when the bed is in use, the armrest part C of a conventional sofa bed can be covered completely, as shown in Figure 1.
By eliminating this, the foot side (the side facing the headboard) can be used more widely, and the hinge machine D, which was exposed outside, is also built-in, providing an outer surface and functionality that is comparable to a general Shindan bed. It became something to present.

Therefore, the side plate 20 of the base body 9 of the seat part 2 and the back part 3
A fan-shaped bellows-like cloth piece 24 is stretched over the side panel surfaces 23 and 24 of the sofa, and this cloth piece 24 hides a part of the rotation links 5 and 6 of the hinge machine from being visible when the sofa is in use. contributes to

Furthermore, a cover 25 of the auxiliary cushion covers the whole of the seat part 2 and the back part 3, and this cover 25 completely hides the spread links 5 and 6 and protects the seat part 2 and the back part in the sofa state. This prevents extreme depression at the bending point with section 3. This cover 25 is removable, but the attachment of the cover 25 was only possible by incorporating the hinge mechanism into the base 9, and unlike conventional sofa beds, the hinge mechanism was exposed to the outside. Cover 2
5 obstructs the rotation of the hinge mechanism.

As described above, in this invention, a notch is provided in the base of the seat part and the backrest part, and a hinge mechanism is provided rotatably within the notch and in the space created above the notch.
The hinge mechanism is not exposed to the outside when the bed is in use, and the armrests are eliminated, making it possible to cover the entire body with elastic material and exterior material, making it possible to create a normal bed and its appearance.
It is possible to provide an excellent sofa bed device which has comparable functions and can be mutually converted into a sofa and a bed.

[Brief explanation of the drawing]

Fig. 1 shows a conventional sofa bed, Fig. 2 is a perspective view of a sofa bed according to the present invention, and Fig. 3 is a cross-X of Fig. 2.
A line sectional view, FIG. 4 is a plan view of the base, and FIG. 5 is a perspective view showing a state in which the base and the hinge mechanism are attached. Symbols in Fig. 1: A: seat part, B: back part,
C...Armrest portion, D...Hinge mechanism, E...Base, reference numbers in Figs. 2 to 5, 1...Base, 2...Seat portion, 3...Back part Part, 4...Fixing plate of hinge mechanism, 5
, 6... Rotating link of hinge mechanism, 7... Support frame,
8... Receiver, 9... Base, 10... Spring horizontal body, 1
1... Protective material, 12... Elastic body, 13... Exterior material, 1
4...Side plate, 15...Cushion body, 16...Frame line,
17... Overturned, cloth, 18... Wooden frame, 19... Longitudinal direction side plate, 20... Short direction side plate, 21... Notch, 22.
... Capital material, 23 ... Side plate side end surface, 24 ... Snake-shaped cloth piece. Fin 1 mother Shigeru Z drawing picture - 5 轡ふ A prisoner

Claims (1)

[Claims] 1. In a sofa bed that can be mutually converted between a sofa and a bed in which the seat part and the backrest part are rotatably held by a hinge mechanism, each of the seat part and the backrest part is rotated in the direction of rotation on the inside of the side plate. A box-shaped base having side plates on at least two sides with cutouts along the sides, a cushion mechanism and an elastic body placed on the base, and an exterior body covering the base, the cushion mechanism, and the elastic body. A sofabed device characterized in that a hinge mechanism is rotatably provided in the opposing notches of a seat base and a backrest base, with one end fixed to the seat base and the other end fixed to the backrest base.