JPH0350209Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention A. Industrial application field This invention is intended to provide a lattice body suitable for fences, handrail lattices, etc.

B. Conventional technology and its problems In the case of this type of conventional technology, each component must be welded on site, which is time-consuming, discoloration of the welded parts, loss of finishing work time, etc.
There were problems such as causing price increases.

B. Structure of the invention A. Means for solving the problem This application attempts to solve the above-mentioned problem with the following structure. That is, the device of the present invention consists of an upper chord member 2, a lower chord member 3, and an intermediate lattice body 4, and the upper chord member 2 and the lower chord member 3 are composed of a pipe-shaped member 2A,
3A, the lower surface of the upper chord member 2 is provided with receiving holes 2B at predetermined intervals into which the upper ends of the intermediate lattice members 4 are inserted, and the upper surface of the lower chord member 3 is provided with holes 2B for receiving the intermediate lattice members 4. A receiving hole 3B into which the lower end is to be inserted is opened at a position corresponding to the receiving hole 2B. Further, the intermediate lattice body 4 is composed of a pipe-shaped body 4A, and front and rear notches 4B and 4C are carved in the upper side wall of the intermediate lattice body 4 at positions corresponding to the receiving holes 2B of the upper chord member 2. At the same time, a semicircular protrusion 4D protrudes outward from the upper portion of the cuts 4B and 4C. moreover,
After the lower ends of the lower chord member 3 and the intermediate lattice body 4 are inserted into the receiving hole 3B, the lower ends of the lower chord member 3 and the intermediate lattice member 4 are latched to the side wall of the intermediate lattice member by a protruding portion 4E that projects into the lower chord member 3, and The upper end of the intermediate lattice body 4 is configured to penetrate and be fixed into the receiving hole 2B while pressing the protrusion portion 4D inwardly of the intermediate lattice body.

B. Example 1 is a lattice body according to the present invention, which is composed of an upper chord member 2, a lower chord member 3, and an intermediate lattice member 4.

Therefore, the upper chord member 2 and the lower chord member 3 are composed of pipe-shaped bodies 2A and 3A, and the lower surface of the upper chord member 2 has a receiving hole 2B into which the upper end of the intermediate lattice member 4 is to be penetrated.
are opened at predetermined intervals, and receiving holes 3B into which the lower end of the intermediate lattice body 4 is to be penetrated are provided on the upper surface of the lower chord member 3 at positions corresponding to the receiving holes 2B. Further, the intermediate lattice body 4
is composed of a pipe-like body 4A, and the intermediate grid body 4
Front and rear notches 4B and 4C are carved in the upper side wall at positions corresponding to the receiving holes 2B of the upper chord member 2, and semi-ring-shaped protrusions projecting outward at the upper portions of these notches 4B and 4C. 4D is prominent.

Further, after the lower ends of the lower chord member 3 and the intermediate lattice body 4 are inserted into the receiving hole 3B, they are locked to the side wall of the intermediate lattice member by a protrusion 4E that protrudes into the lower chord member 3. , the intermediate lattice body 4
The upper end of the protrusion 4D is inserted into the receiving hole 2B while pressing the protrusion 4D inward of the intermediate lattice body and is locked therein. Therefore, the notches 4 of the intermediate grid body 4
B, 4C and the semi-circular protrusion 4D are formed in advance in a factory, etc., but the lower protrusion 4E is made by penetrating into the lower chord member 3 below the intermediate lattice body 4, and then centering it on the intermediate lattice body 4. It is configured such that a half-cup shaped protrusion 4E protrudes in all directions and is connected to the lower chord member.

Therefore, the connecting tool 5 suitable for connecting the intermediate lattice body and the lower chord member by forming the semicircular protrusion 4E will be described below. A passage 5C is formed in the vicinity of the left end of the laterally elongated pipe-shaped body 5A at appropriate intervals in the circumferential direction of the body, through which the sphere 5B can move outward and retreat. The left end 5 of the ejecting shaft 5E is inserted so that it can move forward and backward to the left.
E′ has a tapered structure.

In this case, the movement of the shaft is determined by the first
As shown in Figure 2, a cylindrical case 5F having a lid 5F' is connected to the right end of the main body 5A, and the right end 5E'' of the shaft having the cylinder 5G is inserted into this case to form a chamber 5H. It is configured to push the shaft to the left by applying hydraulic pressure to the chamber. 5I is a return spring, 5J is an oil ring, 5K is a seal packing, 5L is a hydraulic press-fitting nozzle, and 5M is the pipe-shaped main body. It is a ring-shaped stopper fitted on the outer periphery, and 5M' is the bolt that fixes this stopper.

The usage method and effects of this tool 5 are as follows.

With reference to FIG.
When attempting to connect the horizontal pipe 6, a round hole is made at the bottom of the horizontal pipe 6 through which the vertical pipe 7 can penetrate.
Penetrate the upper or lower end of the vertical pipe through this round hole. After this, as shown in Fig. 12, the shaft 5
Insert the connecting tool 5 into the vertical pipe while keeping E moved back to the right.

Next, when the shaft 5E is moved forward to the left as shown in FIG. 13, the sphere 5B is in a state of protruding in all directions, and a protrusion 7A corresponding to the semi-circular protrusion 4E is formed on the side wall of the vertical pipe 7. That will happen. As a result, the horizontal pipe and the vertical pipe are reliably connected.

Thereafter, when the shaft 5E is moved back to the right, the pressing force from the inside on the sphere 5B is removed, so the tool 5 can be pulled out from the vertical pipe.

The upper chord member 2 may be semicircular as shown in FIG. 2, or cylindrical as shown in FIG. 7. In addition, a receiving hole 2C is provided at a predetermined location on the lower surface of the upper chord member, and the support hole 2C is inserted through the upper end portion 8A of the support post 8, and the support hole 2C is inserted into the receiving hole, and a semi-circular protrusion 8B is connected to the upper chord member. Fixed. Further, a pipe-shaped bottom chord bracket 8C is provided horizontally projecting from the side wall of the support column 8 at a desired position for attaching the bottom chord 3.

Further, the connection state between the upper end portion of the intermediate grid body 4 and the upper chord member will be described below with reference to FIGS. 5 and 11. The above protruding parts 4D, 4
When part D is pressed in the direction of arrow A, the depth of cut is 4.
Since B and 4C are engraved, the protrusion 4
D and 4D are compressed in the axial direction of the intermediate grid body. With the protruding portion positioned inward in this manner, it is inserted from below into the inside through the receiving hole 2C of the upper chord member. When the protrusions 4D and 4D pass through the receiving holes, they are mutually restored outward and are locked to the lower surface of the upper chord member. In this way, the work of connecting the upper chord member and the intermediate lattice body can be performed in a so-called one-touch operation.

C Effect Explain along with the effects.

C Effect of the invention A: Insert the lower end of the intermediate lattice body 4 into the receiving hole 3B of the lower chord member, and use the connecting tool 5 to connect the semi-circular protrusion 4E.
form. Next, the upper end of the intermediate lattice body is inserted into the receiving hole 2B of the upper chord member and fixed with the semi-circular protrusion 4D. Furthermore, after inserting the upper end of the strut 8 into the receiving hole 2C of the upper chord member and forming a semicircular protrusion 8B with the connecting tool 5, both ends of the lower chord member are secured to the bracket 8C for the lower chord member, and screws B are attached. to secure both.

(b) According to the present invention, as the welding work is reduced, there is no discoloration of the welded parts compared to conventional products, and the finishing time can be shortened, so that costs can be reduced. In addition, since the upper chord member and the lower chord member are formed into a so-called semicircular or cylindrical shape, the strength of the contact surface with the support and the intermediate lattice body can be maintained.

Regarding the connecting tool 5, in the illustrated one, the spheres 5B are shown projecting in all directions at the same position as shown in FIG. If the heights of the front and rear protrusions 4E and the left and right protrusions 4E are different, the spheres 5B and the spheres located on the front and rear sides of the tool 5 and the spheres located on the left and right sides will be in correspondingly shifted positions. It is natural to configure it so that

[Brief explanation of the drawing]

Fig. 1 is a front view of the lattice body, Fig. 2 is an enlarged sectional view taken along the line A-A, Fig. 3 is an enlarged view of the main parts of the same as above, and Fig. 4 is an explanation with a part cut away to explain the connected state of the same as above. 5 is a perspective view of FIG. 4, FIG. 6 is a front view of another embodiment, FIG. 7 is an enlarged sectional view taken along line B-B, and FIG.
The figure is a sectional view taken along the line C-C, FIG. 9 is a side view of the upper part of the intermediate grid, FIG. 10 is a sectional view taken along the line D-D, and
Fig. 1 is an explanatory diagram with a part cut away to explain the action, Fig. 12 is a longitudinal sectional view of the connecting tool, Fig. 13 is an enlarged longitudinal sectional view of the main part showing the action, and Fig. 14 is an enlarged sectional view taken along the line E-E. It is a diagram. 1... Lattice body, 2... Top chord material, 3... Bottom chord material,
4...Intermediate lattice body.

Claims (1)

[Claims for Utility Model Registration] A lattice body characterized by comprising an upper chord member 2, a lower chord member 3, and an intermediate lattice member 4 having the following conditions. A The above-mentioned upper chord material 2 and lower chord material 3 are pipe-shaped bodies 2
A, 3A, and the lower surface of the upper chord member 2 has a receiving hole 2B into which the upper end of the intermediate lattice body 4 is to be penetrated.
are opened at predetermined intervals, and a receiving hole 3B into which the lower end of the intermediate lattice body 4 is to be penetrated is provided on the upper surface of the lower chord member 3 at a position corresponding to the receiving hole 2B. . (b) The intermediate lattice body 4 is composed of a pipe-shaped body 4A, and front and rear notches 4B and 4C are carved in the upper side wall of the intermediate lattice body 4 at positions corresponding to the receiving holes 2B of the upper chord member 2. , a semi-circular protrusion 4D protruding outward from the upper portion of the cuts 4B, 4C. C. After the lower ends of the lower chord member 3 and the intermediate lattice body 4 have penetrated into the receiving hole 3B, they are locked to the side wall of the intermediate lattice member by a protrusion 4E that projects into the lower chord member 3. The intermediate grid body 4
The upper end of the protrusion 4D is connected to the receiving hole 2B.
be inserted into the intermediate lattice while being pressed inward and locked.