JPH0473008A - Foldable bed - Google Patents

Abstract

PURPOSE:To obtain strong connection and high operability of assembly and storage by connecting through corner blocks and cap blocks of vertical and horizontal frames, and to prevent troubles in folding and injuries by means of connectors mounted on legs and frame bodies. CONSTITUTION:A bed is provided with a pair of spaced vertical frames 1 and 1' and a plurality of legs 3 and 4 supported by the vertical frames and assembled foldably in X-shape. The bed is further provided with a sheet member 10 and a horizontal frames 11 assembled detachably in front and at the back of the sheet member 10. The vertical and horizontal frames are connected by detachable corner blocks 12. It is preferable that a space is formed so that peripheral edge parts of connectors 2 and 5 through which the plurality of legs 3 and 4 are mounted on the vertical frames 1 and 1' foldably with respect to the frames are apart from side surfaces of the legs 3 and 4 and vertical frames 1 and 1'. The corner blocks 12 are mounted on the horizontal frames 11 and vertical frames 1 and 1', and the end parts of the horizontal and vertical frames, at which the corner blocks are mounted, are arranged at right angles and coupled detachably to each other, whereby these frames are connected. This assembling work is very easy, and in addition, the folding work of the legs and vertical frames and storing work of the bed are also very easy.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a folding head that maintains the tension of a sheet during use.

(Prior Art) A folding head made of parts is known as disclosed in Japanese Utility Model Application Publication No. 55-43466. The known folding bed has end legs and the upper part of the central leg, which are assembled in an X-shape in such a way that two bars are rotatable in the same plane and can be folded parallel to each other on a pair of spaced vertical frames. It has a configuration in which the sheets are connected using a connecting tool and the sheet material is attached to the vertical frame.

When stored, the vertical frame is folded in half and the legs are placed along the vertical frame to form a compact shape, and when used, this is expanded and the sheet material is stretched. Even though the sorting material is stretched, there is a tendency for the sheet material to fold along the center in the longitudinal direction, especially when a person is lying down and a downward force is applied to the center. I feel bad.

Therefore, as taught in the above-mentioned publication, a structure is adopted in which horizontal frames are passed through the front and rear of the sheet material and the horizontal frames are removably engaged with the vertical frames. When in use, a horizontal frame is passed through the front and back of the sheet material, and this horizontal frame is locked to the vertical frame. In addition, the legs and the connectors attached to the vertical frame are folded into contact during assembly and storage.

(Problems to be Solved by the Invention) Conventional vertical frames and horizontal frames have a structure in which the ends of the vertical frame are inserted into holes at both ends of the horizontal frame and are coupled together.

However, in this conventional configuration, since the holes in the horizontal frame are relatively large, the assembled form in which the horizontal frame and the vertical frame are joined is weak and easily detached.

Furthermore, although the horizontal frame is moved in the longitudinal direction of the vertical frame, the tension of the sheet material resists this movement, making it difficult to assemble the joints. Additionally, there is a drawback that the folding mechanism cannot be rotated during assembly or storage, and may be scratched.

Therefore, it is an object of the present invention to solve the above-mentioned problems.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention basically provides a means for connecting a vertical frame and a horizontal frame using a corner block or a connecting tool. Use means to make it happen.

Specifically, the present invention provides a pair of spaced apart vertical frames, a plurality of legs supported by the vertical frames and assembled in an X-shape so as to be foldable, a sheet material attached to the joint frames, and a sheet material. To provide a folding bed having a horizontal frame removably assembled at the front and rear of a piece of material, and in which the vertical frame and the horizontal frame are connected by a detachable corner block.

Preferably, the plurality of legs form a space in which the peripheral edge of the connector, which is bendably attached to the vertical frame, is separated from the side surface of the joint frame.

(Function) A corner block is attached to the horizontal frame and the vertical frame, and the ends of the horizontal frame and the vertical frame to which the corner blocks are attached are arranged at right angles, and are removably connected to each other. This work is easy, and the legs and joint frame can be folded and stored easily.

(Example) Two hollow vertical frames 1.1' are connected to a T-shaped connector 2 with their opposite ends butted, and the other end is connected to an L-shaped connector 5 on the vertical frame side. The joint frame 1.1 is pivoted so as to be in contact with each other.
′ are spaced apart and arranged in parallel.

The tips of the end layer 3 and the center leg 4 are pivotally connected to this pair of vertical frames using the connectors 5.2. As a result, the vertical frame 1.1' can be freely rotated within about a right angle in the direction of the arrow with respect to the central leg 4, and the end layer 3 can rotate approximately 27° in the direction of the arrow B with respect to the vertical frame 1.1'.
It can be rotated at an angle of 0 degrees and can be folded compactly.

Each leg 3.4 has two rods 6.6' as shown in FIG.
S-shaped leg connectors 7 are fixed to both sides of the opposite ends of. The support rod 8 is passed between the rods 6, 6' and between the pair of leg connectors 7, and the support rod 8 is pivoted to a fulcrum 9 of a support shaft placed in the center of the leg connectors 7. When the rods 8.6' of the legs 3.4 assembled in an X-shape are approached in the direction of arrow C, the support rods 8 rotate around the fulcrum 9, and the support rods 8 and 6.6' can be in a parallel state. In the state shown in FIG. 3, the support rod 8 is seated on the opposite end surface of the rod 6.6' which is shifted by the thickness of the support rod 8,
Maintain an X shape.

As shown in FIG. 5-8, the 1-shaped connector 2, the L-shaped connector 5, and the S-shaped connector 7 have a vertical frame 1.1' around the periphery.
, a space 26 slightly spaced apart from the rod 6.6'8.
It has a shape that has.

The existence of this space 26 prevents the edges of the connectors 2.5.7 from interfering with the surfaces of the vertical frames l, 1' and the bars 6,6', 8, making folding and assembly of the bed smooth. Do not damage the stick.

Both edges of the sheet material 10 are fixed to both vertical frames 1.1'. A bag-like part through which a hollow horizontal frame 11 is passed is provided at the front and rear of the sheet material 10.

Please refer to FIG. The corner block 12 made of synthetic resin, die-casting, forging, etc. has a straight cross-sectional shape bent at 90 degrees (angle) and an elbow-like shape, and has a hollow part of the horizontal frame 11 at one end. It has the same shape and has a protrusion 13 that is inserted into the hollow part.

A protrusion piece 14 is provided on the lower surface of the protrusion 13, and the protrusion 13 is attached to the horizontal frame 11.
When inserted into the hollow part, this protruding piece 14 opens into the hole 15 of the horizontal frame 11.
42 to ensure a secure connection between the two.

When releasing the connection between the two, push the protruding piece 14 from below to make it easier to remove the protruding piece 14 from the hole 15.

A downwardly open groove 16 is formed at the other end of the corner block 12. The groove 16 is formed on the end surface 17 of the corner block 12.
It consists of a "character-shaped part 18 that is open to the side and the bottom side, and a square part 19 at the back thereof, and the horizontal part of the F-shaped part 18 is semicircular 20. The square part l9 has a "character-shaped part 19. It has a larger shape than the section 18 in the vertical and lateral directions.

A cap corner block 21 made of the same material as the corner block 12 is fitted to the end of the vertical frame 1.1'. The cap corner block 21 consists of a main body 22 that enters the hollow part of the vertical frame 1.1' and a protrusion 23 extending from the end surface of the main body 22. The protrusion 23 has a semi-cylindrical shape or the like into which the groove 16 fits. matches,
The length of the protrusion 23 corresponds to the depth of the groove 160 and the character-shaped portion 18. The protrusion 23 is provided with a hook portion 24. The hook portion 24 has a semicircular shape and is larger than the semicircular shape of the protrusion 23. Its thickness corresponds to the depth dimension of the rectangular portion 19 of the groove 16, and is made wider than the protrusion 23.The cap corner block 21 is fixed by screwing into the hole 25 of the vertical frame 1.1'.

The F-shaped part 18 of the groove 16 of the corner block 12 is connected to the cap corner protrusion 23, and the square part 19 is connected to the hook part 2.
4, lower the corner block 12, fit the protrusion 23 into the letter-shaped part 18, fit the hook part 24 into the square part 19, and then fit the protrusion 23 into the semicircular shape 20. In this state, since the hook portion 24 is locked to the square portion 19, both corner plotters do not come off in the longitudinal direction of the vertical frame 1.1', and the fitting between the protrusion 23 and the semicircular portion 2o is prevented. prevents the corner block from moving upward.

Although the corner block 12 and camp corner block 21 attached to the vertical frame 1.1' and the horizontal frame 11 are illustrated in the present invention, the present invention is not limited thereto. That is, the cap corner block 21 may be attached to the vertical frame 1.1', and the corner block 12 may be replaced with the horizontal frame 11. Furthermore, the attachment of the frame and the corner block is not limited to this, but may be fixed. Moreover, the square part 19 of the corner block 12, the semicircular part 20 and the camp corner block 21
The shapes of the protruding portion 23 and the hook portion 24 are not limited to the embodiments, but may be replaced with polygonal, round, circular, etc. shapes that can be connected by fitting and locking each other.

To bring the left and right vertical frames 1.1' into the retracted state during assembly and use as shown in FIG.
0 to the groove 16 side, then move the horizontal frame 11 and the corner block 12 upward, and remove the hook part 24 and the protrusion 2.
3 from the groove 16. This work is performed by simultaneously moving each corner block 12 arranged at the corner to the cap corner block 2.
The work is to remove it from 1. After releasing the connection between the horizontal frame 11 and the vertical frame 1.1', the corner block 12.21 at at least one corner is removed from the horizontal frame 11, and then the horizontal frame 11 is extracted from the sheet material 10.

The bed from which the horizontal frame 11 has been removed is folded and stored in accordance with the arrow shown in FIG. When in use, the bed is made in a reverse manner to the folding procedure, and then the horizontal frame 11 is passed through the front and back of the sheet material 10, and the vertical frame 1.1', corner blocks 12 and cap corner blocks 21 are attached to both ends of the horizontal frame 11. and install. Next, the groove 16 of the corner block 12 is arranged above the protrusion 23 and hook part 24 of the cap corner block 21, and the corner block 12 is lowered to engage the protrusion 23 and hook part 24 in the groove 16. The vertical frame 1.1' and the horizontal frame 11 are coupled via a corner block 12 and a camping corner block 21. When a person gets on the sheet material 10,
Tension is applied to the sheet material 10 in a direction that causes the left and right vertical frames 1.1' to approach each other. Therefore, the protrusion 23 fits into the semicircular shape 20 to prevent movement of the vertical frame 1.1' and to restrict movement of the corner block 12 and the camp corner block 21 in the pulling direction.

(Effects) In the present invention, since the vertical frame and the horizontal frame are connected by the corner blocks and the cap corner blocks, a strong and reliable connection can be achieved and the assembly and storage operations are easy. Also, legs,
The connector attached to the frame prevents folding from rotating and prevents scratches.

[Brief explanation of drawings]

Fig. 1 is a plan view of an example of the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a left corner pro.
Figures 5 and 6 are partial front views showing the space around the connector, and Figure 7 is a view taken in the direction of arrow X- in Figures 5 and 6. FIG. 8 is a cross-sectional view of the example shown in FIG. 3; In the diagram: 1.1'-vertical frame, 2.5 series of ties, 3.4 legs, 6
．． 6', mortuary bar, 7-leg connector, 10 sheet material, 11
-・Horizontal frame, 12-corner block, 21-cap corner block.

Claims (2)

[Claims] (1) A pair of vertical frames spaced apart, a plurality of legs supported by the vertical frames and assembled in an X-shape so that they can be folded freely, a sheet material attached to the vertical frames, and a sheet material that can be freely removed from the front and back of the sheet material. A folding bed that has a horizontal frame assembled into a horizontal frame, and the vertical frame and horizontal frame are connected by a removable corner block. (2) The folding device according to claim (1), wherein the plurality of legs form a space where the peripheral edge of the connector, which is bendably attached to the vertical frame, is separated from the sides of the legs and the vertical frame. bed.