JPH0311209B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a folding bed device in which a frame on which a mattress is placed can be folded when not in use.

[Technical background of the invention and its problems]

Generally, some bed devices have a frame on which a mattress is placed that can be folded when not in use. Such a structure has the advantage that it occupies less space indoors when not in use and is convenient for storage.

By the way, a conventional foldable bed device was constructed as shown in FIG. That is, 1 is a base body, and one ends of a first frame and a second frame 3 are pivotally attached to this base body 1 so as to be freely foldable.
A leg body 4 is provided on the lower surface side of the other end of these frames 2 and 3.
These legs 4 hold the frames 2 and 3 horizontally so that they are flush with the upper surface of the base 1. Further, a foldable mattress 5 is placed on each of the frames 2 and 3, and a headboard 6 is provided at the other end of the first frame (2).

However, according to such a structure, when the pair of frames 2 and 3 are folded from a horizontal state to a vertical state as shown in FIG. As a result, one end of this pinerest 5 protrudes higher than the upper end of the second frame 3. In addition, the height of the folded bed device becomes higher than necessary, resulting in problems such as inconvenience in storage.

[Purpose of the invention]

This invention is a folding device that prevents the end of the pine tress from protruding upward from the upper end of the vertical frame even if the pine tress is bent in a curved state when the frame is folded. An object of the present invention is to provide a type bed device.

[Existing necessity of the invention]

This invention provides first and second frames, each having one end pivotally connected to a base body, and a central frame is provided at one end of these frames via a movable body, and this central frame is connected to the base body so as to rotate the frame. When the frame is erected almost vertically, the central frame lowers, and the end of the pine tress bent by the central frame is moved up and down by a movable body. This is a foldable bed device that can be supported without protruding above the upper end.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 8. The foldable bed device shown in FIG. As shown in FIG. 3, this base body 11 has a pair of substantially U-shaped side members 1
2 are connected by a pair of connecting members 13, and casters 14 are provided at both ends of these connecting members 13, respectively. At the upper ends of the side members 12 of the base body 11, there are a first frame 15 and a second frame, respectively.
Both ends of the frame 16 are pivotally connected to the frame 16 by a support shaft 17. Legs 18 are rotatably provided at the other ends of the frames 15 and 16, and are held vertically by a support member 19. This support member 19 has one end pivotally attached to each of the frames 15 and 16, and a first guide groove 20 that is protruded from the leg body 18 and is provided in a first guide groove 20 that is formed from the other end to the one end side. Pin 21 of
is engaged. Both ends of the first guide groove 20 are formed into bent parts 20a, and the leg body 1
When 8 is stood up, the first pin 21 is
As shown in the figure, the leg body 18 is held in such a way that it cannot fall down by engaging with one of the bent portions 20a.

On the other hand, one end portion of a pair of movable bodies 22 is pivotally attached to each side member 12 of the base body 11 by a support shaft 23. A second guide groove 24 having a hook-shaped bent portion 24a at the other end of the movable body 22 is formed. Second pins 25 provided on both sides of one end of each of the frames 15, 16 are slidably engaged with the second guide grooves 24 of each movable body 22. Further, a central frame 26 is supported by the four movable bodies 22. That is, the central frame 26 is formed into a rectangular frame shape, and brackets 27 are attached to each of its four corners. A linear third guide groove 28 is formed in each bracket 27. A third pin 29 provided at the other end of the movable body 22 is slidably engaged with the third guide groove 28 . When the first and second frames 15 and 16 are in a horizontal state, the central frame 26 is held horizontally so as to be flush with these frames. This holding position is defined as the first position. From this state, when each frame 15, 16 is rotated vertically using one end as a fulcrum, the movable body 22 is moved by the second pin 25 engaged with the second guide groove 24 of the movable body 22. is rotated about the support shaft 23 in the direction shown by the arrow in FIG. When the movable body 22 rotates, a third pin 29 protruding from the movable body 22 slides in a third guide groove 28 of a bracket 27 provided on the central frame 26 to move the central frame 26 to the first position. Lower it to a sufficiently lower position compared to . That is, the central frame 26 is connected to the first frame indicated by the chain line in FIG.
is lowered from the position to the second position shown by the solid line. Further, when each frame 15, 16 is vertically erected, the second pin 25 is located at the bent portion 24a of the second guide groove 24, as shown in FIG. Therefore, each of the frames 15 and 16 is maintained in a vertically erect state. In addition, each movable body 2
A pressing shaft 30 is provided protruding from the outer surface of one end of 2. As shown in FIG. 8, when the frames 15 and 16 are vertically erected, if the pressing shaft 30 is stepped on and the movable body 22 is rotated in the direction shown by the arrow in the figure, the second pin 25 is Since it comes off the bent part 24a of the second guide groove 24, each of the frames 15,
16 can be laid down horizontally. Also, the first
A bendable pinerest 31 is placed on the second frames 15 and 16. The length dimension of this pinerest 31 is the length of the first and second frames 15, 1.
The length dimension is approximately the same as the length dimension formed by these when 6 is laid down horizontally. Furthermore, board bodies 32 and 33 are provided at the other ends of each of the frames 15 and 16 so as to protrude toward the upper surface thereof.

According to the foldable bed device having such a structure, the first and second frames 15 and 16 are closed when not in use.
When you fold it by rotating it from a horizontal position to a vertical position,
8, in which the central frame 26 is flush with the respective frames 15, 16, is lowered from a first position shown by a chain line in FIG. 8 to a second position shown by a solid line in the same figure. Therefore, since the bent portion of the pinerest 31 folded together with the first and second frames 15 and 16 is supported by the central frame 26 which has been lowered to the second position, the pinetress 31 is bent. Even if it is bent in this state, both ends thereof will not protrude upward from the upper end of each frame 15, 16. In this embodiment, since the board bodies 32 and 33 are attached to the upper ends of each frame 15 and 16, both ends of the pinerest 31 can be attached to the respective board bodies 32 and 33 even if the central frame 26 is not lowered.
It does not stick out when it hits. however,
If the central frame 26 does not descend, the pinerest 31 will be bent at a location other than the central portion, which may cause a large reaction force to be applied to folding the frames 15 and 16, making the folding operation difficult.
Problems such as unnecessary bending of the pinerest 31 arise, but the present invention has the advantage of folding the frames 15 and 16 as described above.
6 is lowered to support the mattress 31, such a problem does not occur.

〔Effect of the invention〕

As described above, in the present invention, when the first and second frames pivotally attached to the base body are folded, the central frame interlocking with these frames is in the first position where it is flush with each of the frames. It then lowered to the second position to support the bent pine tress. Therefore, since both ends of the pinerest do not protrude upward from the upper ends of the folded first and second frames due to the central frame being lowered, the overall height dimension is not increased more than necessary. It has the advantage that it does not become expensive and inconvenient to store. In addition, the central frame is linked to the movement of the first and second frames via a movable body, and
A substantially L-shaped guide groove having a bent portion was formed in this movable body, and the pins protruding from each of the frames were slidably inserted into this guide groove. Therefore, since the pins can be engaged with the bent portions when each frame is erected, these engagements can prevent each erected frame from falling down. In addition, in order to prevent both ends of the pinerest from protruding from the upper end of the frame, if a board body is provided on each frame, both ends of the pinetress will come into contact with the board body and the reaction force will cause each frame to fold. There will be no resistance, or the pine tress will be bent more than necessary, causing unnecessary bending.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention, in which FIG. 1 is a side view of the frame in a horizontally expanded state, FIG. 2 is an enlarged side view of the base, and FIG. 3 is a perspective view of the base. Figure 4 is a cross-sectional view taken along line A-A in Figure 2, Figure 5 is a cross-sectional view taken along line B-B in Figure 2,
Figure 6 is a side view of the pair of frames folded, Figure 7 is a side view of the base with one frame erected, and Figure 8 is a side view of the base with the pair of frames folded. 9 and 9 are side views of a conventional bed device, and FIG. 10 is a side view of the same in a folded state. DESCRIPTION OF SYMBOLS 11... Base body, 15... First frame, 16... Second frame, 18... Leg body, 22... Movable body, 26
...Central frame, 31...Pine tress.

Claims (1)

[Claims] 1. A base, a first frame and a second frame each having one end pivotally attached to the base, and a frame provided at the other end of each of the frames and held substantially horizontally when the frames are laid down. a movable body formed with a substantially L-shaped guide groove having one end pivotally attached to the base body and having a bent portion at the other end; a pin that is slidably inserted into the groove and engages the bent portion of the guide groove to prevent each frame from falling down by raising each frame from a substantially horizontal state to a substantially vertical state;
The four corners of the movable body are slidably and rotatably connected to the other end of the movable body, and when the frames are laid down, the frames are held at a first position substantially flush with the frames, and the frames are held substantially vertically. a central frame that is displaced to a second position lower than the first position in conjunction with the rotation of the movable body when the movable body is erected; and a bent frame placed on the first and second frames. A foldable bed device characterized by being equipped with a freely adjustable pinerest.