JPH0340180Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a sofa/bed device that can mutually convert between a sofa and a bed.

[Technical background of the invention and its problems]

In general, a sofa/bed device has a seat body attached to a base body, and a back body connected to one side of the seat body by a hinge mechanism so as to be able to be held at a predetermined rotation angle. The back body is erected at a predetermined angle to be used as a sofa, and the back body is laid down horizontally to be used as a bed.

By the way, when using a sofa/bed device as a bed, the user may want to place various small items such as a water pitcher or a desk lamp at the bedside. In such cases, conventionally, a nightstand was installed on the side of the bed, and small items were placed on the nightstand. Therefore, it is uneconomical to purchase a nightstand, and it is also troublesome to have to put away the nightstand when converting from a bed to a sofa.

[Purpose of invention]

The purpose of this invention is to provide a bed device which can be used as a sofa and allows small items such as a water jug and a desk lamp to be placed at the bedside without installing a night table when used as a bed.

[Summary of the idea]

This invention connects the back body to one side of the seat body using a hinge mechanism so that it can be held at a predetermined rotation angle.
The seat body is rotatably supported by a support mechanism on the upper surface of a base body formed to have approximately the same length dimension, and the seat body is exposed when the seat body is rotated relative to the base body. Placing portions on which small items can be placed are formed on the upper surface of both ends in the longitudinal direction of the base.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings. The sofa/bed device shown in FIG. This base body 1 has legs 3 attached to the four corners of the lower surface of a base frame 2 formed by connecting square timbers in the shape of a ladder, and decorative plates 4 forming a mounting portion are attached to both ends of the upper surface in the longitudinal direction. ing. Further, on the upper surface of the base body 1, a thrust bearing 5 constituting a support mechanism is provided slightly closer to one end than the center in the longitudinal direction, and a pair of spheres 6 are rotatably supported near the other end by a support member 6a. It is provided. In the thrust bearing 5, a lower plate 7 and an upper plate 8 are connected to each other by a support shaft 11 via steel balls 9 so as to be rotatable with each other. Then, the lower plate 7 is fixed to the upper surface of the base 1,
The upper plate 8 is fixed to the lower surface of the seat body 12. As shown in FIG. 3, this seat body 12 includes a first seat frame 13 formed of square timber like the base frame 2, and a first seat frame 13 at one longitudinal end of the first seat frame 13. a second seat frame 15 connected to the seat frame 15 so as to maintain a predetermined rotation angle by a hinge mechanism 14; and a cushion material 16 provided on the upper surface of each of the seat frames 13, 15.
It is composed of a. The upper plate 8 of the thrust bearing 5 is fixed to the lower surface of one end of the first seat frame 13. Further, a first leg 16 is foldably connected to the lower surface of the other end of the first seat frame 13, as shown in FIG.

As shown in FIG. 3, a back body 17 is connected to one longitudinal side of the seat body 12 by a second hinge mechanism 18 so that it can be held at a predetermined rotation angle. Like the seat body 12, this back body 17 includes a first back frame 19 and a first back frame 19.
A second back frame 22 is connected to one longitudinal end of the back frame 22 by a third hinge mechanism 21 so that it can be held at a predetermined rotation angle, and each of these back frames 19,
22 and a cushion material 23 covering the upper surface side thereof. The second hinge mechanism 18 is connected to the first seat frame 13 and the first back frame 19.
are connected at two locations (only one location is shown in FIG. 3), and the second seat frame 15 and the second
It is connected to the back frame 22 at one point.
Further, a second leg 24 shown in FIG. 6 is foldably connected to the lower surface of the other end of the first back frame 19 in the longitudinal direction. In addition, the seat body 12 and the back body 1
The length dimension of 7 is set to be almost the same as the length dimension of the base body 1, and the width dimension between this back body 17 and the seat body 12 when the back body 17 is laid down almost horizontally. is set to be sufficiently shorter than the length of the base 1. Therefore, when the seat body 12 and the back body 17 are rotated approximately 90 degrees from a state parallel to the base body 1 as shown in FIG. The decorative board 4 is exposed.

The first to third hinge mechanisms 14, 18, 2
1, a first arm 27 and a second arm 28 whose one ends are pivotally connected by a support shaft 26, as shown in FIG.
and has. A tooth 29 is provided at one end of the first arm 27.
A stopper 31 is pivotally connected to one end of the second arm 28 by a pin 32 and is biased by a spring 33 in the direction of meshing with the teeth 29. There is. A cam plate 34 is rotatably attached to the support shaft 26. A recess 3 is formed on the outer peripheral surface of the cam plate 34 at a predetermined angle in the circumferential direction.
5 and a convex portion 36 are formed. The convex portion 36
The radial dimension from the support shaft 26 is larger than the radial dimension of the tooth 29. Further, at one end of the first arm 27, the recess 3 is provided when the stopper 31 is engaged with the tooth 29.
An engaging body 37 is provided opposite to 5.
According to such a structure, the first arm 27 can be held at a predetermined rotation angle with respect to the second arm 28 by the engagement between the teeth 29 and the stopper 31. Further, the first arm 27 is rotated in the direction shown by the arrow in FIG. 4, and the cam plate 34 is
When the stopper 31 rides on the protrusion 36 of the cam plate 34 and is disengaged from the tooth 29, the first arm 27 can be freely rotated in the direction opposite to the arrow. Rotation in this direction continues until the engaging body 37 comes into contact with the other end of the recess 35 and rotates the cam plate 34, until the stopper 31 comes off the protrusion 36 of the cam plate 34 and engages with the tooth 29. That is, the first arm 27 can be rotated until it is in a horizontal state that is substantially horizontal with respect to the second arm 28. Therefore, the second hinge mechanism 18 allows the back body 17 to be held at a predetermined angle with respect to the seat body 12, and when the back body 17 is laid down horizontally, the second seat frame 15 and the second back frame 22 are the first,
The third hinge mechanism 14, 21 allows the device to be held at a predetermined angle with respect to the first seat frame 13 and the first back frame 19.

Note that a stopper 38 shown in FIG. 3 is provided protruding from the lower surface of one end of the first seat frame 13. As shown in FIG.
This stopper 38 is adapted to come into contact with the side surface of the base body 1 when the seat body 12 is parallel to the base body 1 and when it is rotated approximately 90 degrees.

According to the sofa/bed device having such a structure, if the back body 17 is erected at a predetermined angle as shown in FIG. 5, the device can be used as a sofa. When converting from a sofa to a bed, after folding the back body 17 so that it is almost horizontal with the seat body 12, as shown in FIGS. 3 and 6, the seat body 12 and the back body are 17 is rotated approximately 90 degrees relative to the base body 1 using the thrust bearing 5 as a fulcrum. Then, the decorative plates 4 provided on the upper surface of both longitudinal ends of the base body 1 are exposed. Therefore, when using the plane formed by the seat body 12 and the back body 17 as a bed, small items such as a water pitcher or a desk lamp are placed on the upper surface of the decorative board 4 located at the bedside of the user. It is very convenient because it can be used as a placing section. Note that when the seat body 12 and the back body 17 are rotated with respect to the base body 1, they move while rotating the pair of spheres 5 provided on the upper surface of the base body 1, so that the seat body 12 and the back body 17 are rotated. The rotation operation with the back body 17 can be performed easily.

Furthermore, when the seat body 12 and the back body 17 are used as a bed, these second seat frames 1
5 and the second back frame 22 are rotated and raised at a predetermined angle as shown in FIG. Therefore, it is convenient when reading or eating on the bed, for example. Note that when this device is used as a bed, the other ends of the seat body 12 and the back body 17 are provided with first legs 16 foldably provided on the lower surfaces thereof.
and second leg 24.

[Effect of idea]

As described above, according to the sofa bed device of the present invention, when the seat body and the back body are rotated relative to the base body when used as a bed, the beds formed at both ends of the base body in the longitudinal direction The holder is now exposed. Therefore, small items such as a water pitcher or a desk lamp can be placed on this placing portion. In other words, small items can be placed next to the user's bedside without installing a nightstand as in the past, so it is not only economical as there is no need to purchase a nightstand, but also very convenient. has advantages.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a partially sectional front view of the sofa, Fig. 2 is a plan view of the base, and Fig. 3 is a partially sectional plan view of the bed. FIG. 4 is a partially sectional side view of the hinge mechanism, FIG. 5 is a perspective view of the sofa, and FIG. 6 is a perspective view of the bed. 1... Base body, 4... Decorative board (placing part), 5...
Thrust bearing (support mechanism), 12... Seat body, 1
7... Back body, 14, 18, 21... Hinge mechanism.

Claims (1)

[Scope of utility model registration request] A seat body, a back body connected to one side of the seat body by a hinge mechanism so that it can be held at a predetermined rotation angle, a base body formed to have approximately the same length dimension as the seat body; A support mechanism that rotatably supports the seat body on the upper surface of a base body, and a support mechanism that is exposed when the seat body and the back body are rotated relative to the base body with the back body laid down substantially horizontally. A sofa/bed device comprising: a placing portion formed on the upper surface of both ends in the longitudinal direction of the base.