JPH0421326Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a folding device used in a foldable bed or the like.

BACKGROUND ART Conventional technology for folding mechanisms for beds and the like includes, for example, one in which the front and back of a bed frame are folded around a fulcrum shaft in the center of the bed frame. Although this type of bed has a simple structure, it does not have a storage space at the base of the bed for a futon or a try-wall, so it is limited to folding only the bed frame.

There is also a bed frame in which the front and back of the frame are folded around two fulcrum shafts. This type of bed has storage space for the bed base in the center of the fold, so it can be folded while the bed base is held on top of the bed. However, the structure is complicated, and each fulcrum shaft must be supported from the floor side. multiple auxiliary legs are required.

Purpose of the invention Therefore, the purpose of the present invention is to eliminate the above-mentioned drawbacks, to be able to be folded with a single fulcrum part to form a storage space such as a bed base, and to support the fulcrum part during use. To obtain a folding device such as a bed that does not particularly require auxiliary legs or the like.

Therefore, the present invention provides a hinge on both sides of the boundary between two independent bed frames, and shifts the fulcrum of this hinge in the folding direction by at least the thickness of the bed base, etc., thereby folding the bed. Sometimes, a storage space such as a bed base is provided between the frames. Further, in the present invention, the hinge can be turned upside down, so that when using the bed, etc., the hinge is directed downward so that the hinge part does not get in the way. Furthermore, this invention allows this hinge to rotate only at an opening of 180 degrees, and firmly locks the hinge from moving to the opposite side, thereby keeping the boundary between the bed frame and the floor surface when using a bed, etc. This makes it possible to omit the need for auxiliary legs for support between the two.

Structure of the Embodiment FIGS. 1 and 2 show an example in which the folding device 1 of the present invention is attached to a foldable bed 2.

The folding device 1 of the present invention has two objects to be folded.
As one frame, two bed frames 3
It is composed of hinges 4 attached to both sides of the boundary connecting portions a and 3b.

This hinge 4 consists of a pair of hinge metal fittings 4a and 4b.
Each of the hinge fittings 4a, 4b has a right-angled triangular shape, and is rotatable at the apex by a fulcrum pin 5 in the direction of the folding line of the bed frames 3a, 3b, that is, on a straight line that is the center of rotation when folded. The bed frame 3a is connected at the top corner of the bottom side.
Support shafts 6a and 6b are provided on straight lines in the longitudinal direction of the support pin 3b, that is, in a direction perpendicular to the support pin 5. The support shafts 6a, 6b are inserted into cylindrical hinge mounting bodies 7a, 7b fixed to both connecting side surfaces of each bed frame 3a, 3b, respectively, in a state that they cannot be removed, and the hinge mounting bodies 7a, 7b
around the center line of the support shafts 6a and 6b as bearings.
It is designed to be able to be reversed with a rotation angle of 180 degrees.
In this embodiment, the support shafts 6a and 6b are attached to the hinge fittings 4.
a, 4b, and hinge mounting bodies 7a,
7b are fixed to the side surfaces of the bed frames 3a, 3b, but the mounting positions of these support shafts 6a, 6b and the hinge mounting bodies 7a, 7b may be in the opposite relationship to those in the embodiment. Note that these hinge fittings 4a and 4b can be rotated only within an opening angle range of 180 degrees, for example, by abutting on a locking portion 8 formed on the side surface of the hinge fitting 4a. .

On the other hand, a known main leg 9 is attached to the back side of each bed frame 3a, 3b in a foldable state at both ends of the bed frames 3a, 3b, that is, at the front and rear sides of the bed 2. Further, a frame plate 10 is attached to the end of the bed frame 3a, that is, to the front part of the bed 2. Furthermore, a hook 13 for fixing the bed frames 3a and 3b to each other in the folded state is provided on the frame 3b side.
The hook portion 13a is provided on the frame plate 10 side. Further, wheels 11 are attached to the folding side edges of the frames 3a, 3b on the lower surfaces thereof in order to roll and transport the folded head 2.

Note that the bed base 12, such as a futon or a try-wall, is placed on the bed frames 3a and 3b.
is listed.

Effects of the Embodiment Next, the operations of the folding device 1 and the effects of the embodiment will be described.

When folding the bed 2 while holding the bed base 12, first half-turn the hinge 4 from downwards to upwards about the support shafts 6a and 6b, and as shown in FIG. Set it so that it is located at the top. In this state, fold the bed 2 by pulling up the front and back sides. At this time, as shown in FIG.
A double-width storage space is formed in which the bed base 12 is folded together and stored. here,
By locking the hook 13 to the hook portion 13a, this folded state is firmly fixed.
Further, by folding the main legs 9 toward the respective bed frames 3a and 3b, the folding operation of the bed 2 is completed. At this time, since the wheels 11 are positioned on the floor side, the bed 2 in the folded state can be moved while being rolled under a light force. This state is shown in FIG.

When the bed 2 is to be used next time, the main legs 9 are pulled out from the folded bed 2, the hooks 13 are removed, and each bed frame 3a, 3b is unfolded into a horizontal state. At this time, the bed base 12 is also expanded, and the bed frames 3a, 3
It will be in a state where it is held on b. In this state, the hinge 4 is turned half way so that the fulcrum pin 5 faces downward as shown by the solid line in FIG. Due to this, the hinge 4
Since the downward bending of the bed frames 3a and 3b at the folding line is securely secured, no support by auxiliary legs or the like is required. Furthermore, since the hinge 4 does not protrude upward when the bed 2 is in use, it does not interfere with sleeping.

Modifications of the Invention The present invention is not limited to the bed 2, but can also be used as a folding mechanism for, for example, a table.
Further, the function of the locking portion 8 can be obtained by the contact relationship between the bed frames 3a and 3b on the folding line side, so the locking portion 8 may be omitted if necessary. .

Effects of the invention In the folding device such as a bed according to the invention, the fulcrum of the hinge is shifted in the folding direction.
Even when the two frames are folded, storage space such as the bed base can be obtained. Therefore,
With a simple folding mechanism, a bed or the like can be folded as it is with the bed base held. Moreover, when using the bed, the hinge can be turned halfway and the fulcrum part can be directed downwards, so it does not get in the way of use, and a strong locking condition is obtained, so there is no need for support such as auxiliary legs. . In this manner, bending in the folding direction can be prevented by reversing the hinge portion, so that the folded state and unfolded state can be selectively set by a simple operation.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment in which the folding device of the present invention is attached to a bed, Fig. 2 is a side view of the embodiment, and Fig. 3 is a side view of the embodiment in a folded state. DESCRIPTION OF SYMBOLS 1... Folding device such as a bed, 2... Bed, 3a, 3b... Bed frame, 4... Hinge, 5... Fulcrum pin, 8... Locking portion.

Claims (1)

[Scope of utility model registration request] Two independent frames and both frames at 180
The hinge is composed of two approximately triangular hinge metal fittings, and the apex portions of these two hinge metal fittings are connected by a fulcrum pin on the rotation center line in the folding direction of both frames. At the same time, both apexes on the bottom side of each hinge fitting are connected to both sides of the connection side of each frame by a support shaft on a straight line perpendicular to the above-mentioned support pin, and a hinge mounting body that rotatably supports each support shaft. A folding device such as a bed that is characterized by being connected.