JPH0222104Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a lattice structure such as a fence or a lattice in which lattice bars are attached to the sides of chord members.

[Prior Art] Conventional lattice structures use fixing devices such as rivets to attach lattice bars to the upper and lower chord members, and their assembly requires a lot of effort and cost.

In order to solve this problem, the present applicant has filed Utility Model Application No. 59-49465.

That is, in this invention, when forming the notch grooves in the upper and lower projecting strips, at the same time, a notch portion communicating with the notch grooves is formed in the fitting piece.

As a result, unlike conventional lattice structures, the lattice bars can be fitted to the protruding strips of the upper and lower chord members without separately providing the engaged portions of the receiving parts on the lattice bars in a separate process. This makes it possible to save labor in the work process.

[Problems to be solved by the invention] It is desired that the lattice structure has a stronger connection between the string members and the lattice beams.

Therefore, the present invention aims to take the invention of the above-mentioned application one step further and provide a lattice structure in which the connection between the string members and the lattice beams is stronger.

[Means for Solving the Problems] In order to achieve the above object, the lattice structure of the present invention includes chord members 1 and lattice crosspieces 6, the chord members 1 have projecting strips 2 on the sides, The protruding strip 2
A pair of notched grooves 3 are formed in the lattice bar mounting portion to form a fitting piece 4, and the lattice bar 6 is formed in a cylindrical shape and extends in the longitudinal direction with a groove 62 between. A lattice structure in which a pair of protrusions 61 are formed to face each other, and the fitting piece 4 is fitted into the groove 62 to attach the lattice crosspiece 6 to the chord member 1, 4 is formed with a pair of notches 5 communicating with the notch groove 3, has a bent piece 41 between the pair of notches 5, and engages the protrusion 61 with the notch 5. It is characterized by:

[Operation] Since the protrusions 61 and the notches 5 are engaged, the connection between the lattice bars 6 and the chord members 1 is strong.

Further, the bent piece 41 of the fitting piece 4 fits into the groove 62 between the protrusions 61, and its tip is inserted into the groove 62.
In order to come into pressure contact with the inner wall of the string member 1 due to its own elasticity, the lattice crosspiece 6 and the chord member 1 are more firmly connected.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. Incidentally, the same types of parts in various embodiments are given the same reference numerals and redundant explanations will be omitted.

Each figure shows a fence according to an embodiment of the present invention.

As shown in FIG.
It is constructed by connecting a plurality of lattice bars 6 spaced apart from each other at right angles to.

Referring to the exploded perspective view of the main parts of the lattice structure shown in FIG. 2, protruding strips 2 are provided on opposite sides of the upper and lower chord members 1 at right angles from the longitudinal sides. By forming the notch groove 3 in the strip 2,
A fitting piece 4 is formed between the notch grooves 3.

The fitting piece 4 has a pair of notches 5 communicating with the notch groove 3 on both sides 42 facing the notch groove 3, and a portion sandwiched between the pair of notches 5 is caused, for example. A bent piece 41 having a bent tip is formed.

The bent piece 41 has elasticity and is gently curved in its thickness direction. In this embodiment, the bent piece 41 is provided in the middle of the protruding length of the fitting piece 4.

The tip end of the bent piece 41 of the fitting piece 4 can serve as a guide when inserted into the lattice crosspiece 6.

On the other hand, the lattice crosspiece 6 attached to the chord member 1 has a cylindrical shape, and the inside 63 of the lattice crosspiece 6 has the following characteristics in the longitudinal direction:
A pair of parallel protrusions 61 having a groove 62 therebetween are provided facing each other with an internal space in between.

The width of the groove 62 is slightly larger than the thickness of the fitting piece 4, and the inner wall 6 on which the protrusion 61 is provided
The width between the fitting pieces 3 is approximately equal to the width of the fitting piece 4.

This lattice crosspiece 6 is fitted into the groove 62 on both sides 4 of the fitting piece 4.
It is attached to the string material 1 by fitting the bent pieces 41 together.

FIG. 3 shows the fitted state of the lattice crosspiece and the chord material.
3 is a schematic sectional view of the main part of the lattice structure, and FIG. 3 1 is a sectional view taken along the line A-A in FIG. is protrusion 61
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2 as seen from the direction of the arrow.

The protruding rim 61 is plastically deformed at the position of the notch 5, sandwiching the notch 5 from both sides, and the width of the tip of the protruding rim 61 is narrowed, and the protruding rim 61 is engaged with the notch 5. This plastic deformation is performed by caulking by hitting with a punch the locations indicated by arrows in FIGS. 2 and 3.

This caulking work is performed by arranging the lattice bars 6 in parallel at predetermined intervals, applying and fitting the chord members 1 from above and below, and sequentially spot-pressing the lattice bars 6 at predetermined positions.

Next, the action will be explained.

The bent piece 41 of the fitting piece 4 fits into the groove 62 between the pair of protrusions 61, and the tip of the bent piece 41 elastically abuts the inner wall of the protrusion 61 within the groove 62. Therefore, when assembling the lattice structure, the lattice bars 6 and the strings 1 are prevented from coming off, and the positioning between the lattice bars 6 and the strings 1 is facilitated. This prevents rattling between the lattice beams 6 and the string members 1.

In addition, the width of the tip of the protrusion 61 is narrowed at the position of the notch 5, and the tip of the protrusion and the notch 5 are engaged, so that the connection between the lattice bar 6 and the chord member 1 is reduced. is becoming stronger.

[Effects of the invention] According to the lattice structure according to the invention, the lattice beams can be attached to the string members without using fixing devices such as rivets, making it possible to save labor in the working process, In addition, the bent pieces of the fitting piece fit into the grooves between the protrusions, and their tips abut against the inner walls of the protrusions within the grooves, so that the lattice beams and It can be firmly connected to the string material without wobbling even after assembly.

[Brief explanation of the drawing]

Fig. 1 is a front view of the lattice structure of the present invention, Fig. 2 is an exploded perspective view of the main part of the lattice structure, and Fig. 3 is the main part of the lattice structure, showing the fitted state of the lattice crosspiece and the chord members. FIG. 1... Chord material, 2... Protruding strip, 3... Notch groove, 4
... Fitting piece, 5 ... Notch, 6 ... Lattice bar, 41
...Bend piece, 61...Protrusion, 62...Groove.

Claims (1)

[Claims for Utility Model Registration] Comprising a chord member 1 and a lattice crosspiece 6, the chord member 1 has a protruding strip 2 on its side, and the protruding strip 2
A pair of notched grooves 3 are formed in the lattice bar mounting portion to form a fitting piece 4, and the lattice bar 6 is formed in a cylindrical shape and extends in the longitudinal direction with a groove 62 between. A lattice structure in which a pair of protrusions 61 are formed to face each other, and the fitting piece 4 is fitted into the groove 62 to attach the lattice crosspiece 6 to the chord member 1, 4 is formed with a pair of notches 5 communicating with the notch groove 3, has a bent piece 41 between the pair of notches 5, and engages the protrusion 61 with the notch 5. A lattice structure characterized by