JPS581232Y2 - folding table legs - Google Patents

Description

[Detailed explanation of the invention] Folding legs for tables must be easy to assemble, stable, and free of obstacles, but conventional ones
When the four legs are folded one by one or when the legs are stood up, in order to improve the stability of the legs, when installing the top plate side, use braces between the frame and the legs, or do not use the braces. There are various ways to fold it in half, such as using a spring, but in the case of a low table, the braces hit the knees, so the seating area is narrowed accordingly.
Also, items that can be folded in half by a spring can cause your hands to get pinched, and items without braces are often difficult to assemble and are unstable.

This proposal was made to eliminate those drawbacks, and if I explain this with reference to the drawings, hereafter, on the drawings, the side of the top plate 1 will be called the top, the area below it will be called the bottom, and the left and right will also be called the left and right. , Fig. 1 is a perspective view of the table to which the present invention is attached, seen from the back, with the two left legs 5 shown in an open and standing position, and the two right legs 5 shown in a folded state. The second
The figure shows a back side plan view with one leg 5 folded, and the third leg 5.
The figure is a front view, the left leg is a cross-sectional view showing the inside of the leg support part 7 and the front view of the leg 5 are removed, and FIG. 4 is a cross-sectional view of the center part in FIG. 3 is shown from the rear, the left leg is a sectional view showing the inside like FIG. 3, and the right leg is a front view.

FIG. 5 shows the leg support part 7 and the leg 5 when the leg 5 is assembled.
, FIG. 6 is a side sectional view showing the internal state of the frame 2, etc.
5 is a side sectional view similar to FIG. 5, but showing the position immediately before the leg 5 is pulled downward and rotated and folded to the right;
FIG. 7 is a side view showing the leg 5 in a folded state;
The figure is a side sectional view showing the inside of the leg 5 in a folded state, and as shown in FIGS. 1 and 2, the monoscrew hole 4
The two square pipes 2 with which
is welded slightly inside from both ends of the square pipe 2,
Make the end of square pipe 2 and the protruding frame.

The supporting parts 6, 7.8 of the legs 5 are made by bending a steel plate into a U-shape with the inner side slightly larger than the thickness of the legs 5, and attaching the upper part 1 in the vertical direction.
A cut is made in each month of the lower 2/3, leaving /3.
The leg support parts 6, 7.8 are divided into three parts, and as shown in Fig. 5.6.7, the leg support part 7, which is the front part, is curved from the middle and pushed outward from the uncut part at the top. .

The leg supports 6, 7.8 are welded and fixed to each end 9 of the square pipe 2 at the open upper part of the U-shape with the front face 7 facing outward. Since the part where it is inserted is not fixed, it cannot be turned to both sides like a leaf spring, but a hole is made in that part to pass the shaft 11, and it is welded to the end of the square pipe 2. As shown in FIG. 3, pin holes are made in the fixing parts 6 and 8 of the leg support part, and pins 10 are inserted and fixed therein.

The legs 5 are square pipes that are slightly narrower than the insides of the leg supports 6 and 7.8, and as shown in Figures 5.6 and 7.8, each side top 14 is round and a pin 10 is fitted in the center. The pin receiver 13 to be inserted has been cut out, and as shown in Figures 5 and 6, the rear surface 15 of the leg 5 is a long plate shape that is slightly narrower than the width of the leg pipe and is bent toward the rear. A rectangular hole 12 for passing the shaft 11 is drilled on both sides of each leg 5, slightly below the pin holder 13 that enters into the frame pipe 2, and further below, a hole is drilled on both sides. A pin 16 is passed through and fixed.

A square pipe 26 is welded from the bottom to the top of the leg 5 as a connection between the two legs, and a cap made of rubber or the like is attached to the bottom of the leg 5.

The round bars 17, 18, and 19 shown in Fig. 2.3.4 have a long center bar 18, a short round bar 17 and 19 at both ends, and a single bar diagonally cut into three parts as shown in the cut 20. Cut into pieces, with 1 shaft in the center.
Short round bars 17 and 19 are welded to the notched leg support part 6, and a hand 2 is placed in the center of the round bar 18.
7 is attached.

Each leg 5 is inserted into the leg support parts 6, 7.8 with the rectangular hole 12 on the side, two legs in a set with the pin receiver 13 facing upward, and opened in both the leg support parts 6, 8 with the notches. The shaft 11 is passed through the shaft hole, the rectangular hole 12 of both legs 5, the shaft hole of the round bar 17°18.19, etc., and integrated.

The round bar 18 therefore begins to rotate about the shaft 11, and a spring washer 21 is attached to the threaded end of the shaft 11 protruding from one of the leg supports, as shown in Figure 2.3.4. ．． Pass the washer 22 through the nut 23, and as shown in FIG. Stop when there is a certain amount of gap.

A spring 24 is applied to the pin 16 of each leg 5 and to the shaft 11, constantly pulling the leg 5 toward the shaft 11.

With the above structure, as shown in Figure 4, the round bar 1
When the hand 27 of 8 is on the outside, the round bar 17° 18.19 has its cut parts 20 in close contact and there is no change in length, so there is a gap between both legs 5 and both leg supports 6 and 8. Since there is a gap, the legs 5 wobble, and can be moved up and down or folded freely, so when the legs 5 are erected, due to the attractive force of the spring 24,
It is automatically pulled toward the top plate 1 side and fits into the leg support parts 6, 7.8, and the pin 10 enters the pin receiver 13 at the tip, so that the leg 5 will not fall down even if there is some wobbling. .

Then, as shown in FIG. 3, when the hand 27 is moved inward,
The round bar 18 also rotates, and the long diagonally cut ends of the round bars 17, 18, and 19 come into contact with each other, so that the entire round bar becomes longer, and the leg support 6 is pushed. 8
Since the legs 5 are strongly pinched with the , there is no wobbling and the legs 5 are fixed.

To fold the leg 5, turn the hand 27 of the round bar 18 outward to retract the entire bar, free the leg 5, and pull it downward.
The rectangular hole 12 acts as a guide, and when pulled down to the position shown in FIG.
When folded as shown in Figure 8, the spring 24 stretches and tries to move to the left due to its attractive force, but the stopper 15 hits the inner surface of the leg support 7 and is stopped, so the hand 2 of the round bar 18
7 is moved inward, the round bars 17, 18.1'J become longer, and the legs 5 are fixed between the leg supports 6, 8.

To attach frames 2 and 3 to top plate 1, screw screws 25 are passed through holes 4 made in frame 2 and tightened.

With the structure described above, it is easier and faster to assemble and fold, and is more stable and convenient than conventional folding legs.

[Brief explanation of drawings]

Figure 1 is a perspective view of the back of the entire table, Figure 2 is the leg 5
3 is a front view, FIG. 4 is a cross-sectional view of the central part of FIG. 1, FIG. 5 is a side sectional view, and FIG. 6 is a side view of the leg 5. FIG. 7 is a side sectional view showing the rotational position, FIG. 7 is a side view with the legs 5 folded, and FIG. 8 is a side sectional view of FIG. 7.

Claims (1)

[Claims for Utility Model Registration] (a) As shown in the drawing, the top plate 1 is attached to each end 9 of the frame 2.
The leg supports 6, 7.8, which are welded to each other, have a cut at the lower corner and a pin 10 fixed inside. (b) A pin receiver 13 is cut out on the upper part 14 of both sides of each leg 5, and the upper part 15 of the rear face is bent rearward, and a rectangular hole 12 is bored on both sides of the lower part of the pin receiver 13. A pin 16 is fixed to. (c) Round bars 17, 18, and 19 cut diagonally into three pieces are
The round bar 18 in the middle is long, and the round bars 17 and 19 at both ends are short.
A hole is made in the center of each round bar to allow the shaft 11 to pass through, and a short round bar 1
7.19 is welded to the leg support part 6, and a hand 27 is attached to the center of the round bar 18. (d) Each leg 5 is made up of two legs, and the upper part is connected to the leg support part 6.
, 7.8, and pass the shaft 11 through the shaft holes in the leg supports 6 and 8, the rectangular holes 12 in the legs 5, and the shaft holes in the round bars 17, 18, and 19, making each leg integral. 5 pin 16
A spring 24 is applied to the shaft 11 and the shaft 11. Folding legs of the table configured as above.