JPH0322479Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention mainly relates to the structure of a surface lattice that is attached to ventilation holes and windows of buildings for security purposes.

(Prior art and its problems) This type of surface lattice is constructed by assembling a plurality of bars in a grid pattern, but the surface of each bar is located on the same plane. In this method, interlocking recesses with a depth of half the height of the crosspieces are formed at positions corresponding to grid intersections of each crosspiece, and the crosspieces are assembled in a grid pattern so that the interlocking recesses fit into each other. A double hole structure is adopted.

On the other hand, for the above-mentioned crosspiece material, hollow bar-shaped materials such as aluminum or other light metals are used because high-quality materials that are lightweight, have sufficient strength, and have consistent dimensional accuracy can be mass-produced in factories. However, if the above-mentioned interlocking recesses are formed in a hollow rod-shaped crosspiece consisting only of a peripheral wall, not only will the strength of the crosspiece be significantly reduced, but also the interlocking recesses will be forced into contact with each other. The contact surface between the two crosspieces when fitted is extremely small.
Therefore, sufficient adhesive bonding strength cannot be obtained by bonding only with adhesive. Even if rivets are used to increase the bonding strength, the rivet heads must be exposed on both the front and back surfaces, resulting in a significant decrease in commercial value.

For the above reasons, it is possible to simply use hollow rod-shaped crosspieces made of light metal such as aluminum as the crosspieces for assembling surface lattices with a double-hole structure in place of conventional wooden crosspieces. I couldn't do it.

(Means and effects for solving the problems) The present invention proposes a surface lattice structure that can solve the above problems, and its features are as described above, where each grid intersection point is The crosspiece forming the interlocking recess with a depth half the height of the crosspiece has a hollow cross-sectional shape having a partition wall continuous in the length direction, one side of which is located at the center of the height of the crosspiece. The matching recess is formed in an area half the height of the crosspiece on the side to which the partition wall does not belong, and this crosspiece is
The above-mentioned interlocking recesses are assembled into a grid pattern by fitting each other into each other.

In such a surface lattice structure of the present invention, although the cross-piece has a hollow cross-sectional shape and has a partition wall inside, the partition wall is not cut out by forming the interlocking recess. The partition wall can be effectively utilized as a reinforcing means to compensate for the decrease in strength due to the formation of the interlocking recesses. Furthermore, at the fitting portion between the interlocking recesses, the partition walls of both crosspieces come into surface contact with each other, and this wide contact surface between the partition walls can be utilized for adhesive bonding. . Furthermore, even when rivets are used in combination, the space adjacent to the engagement recess within the internal space partitioned by the partition wall can be used as a head storage space for the blind rivet.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.
is a surface grid main body, and a frame-shaped outer frame 2 is fitted and fixed to the outer periphery of the main body. The surface lattice main body 1 is
A plurality of beams 3 having the same structure are assembled in a checkerboard pattern using a double hole structure.

That is, as shown in FIGS. 3 and 4, each crosspiece 3 is made of a hollow bar-shaped (square pipe-shaped) molded product of aluminum, and a partition wall 4 is integrally molded continuously in the length direction inside. ing. This partition wall 4 is
It is formed by shifting the position to one side with respect to the center position of the height of the crosspiece so that one side 4a is located at the center of the height of the crosspiece. Then, at the positions corresponding to the grid intersections of the crosspiece 3 (point a in Figure 1, and each position equally dividing both ends and between both ends), a depth of half the height of the crosspiece is slightly wider than the width of the crosspiece. A wide interlocking recess 5 is formed, and the interlocking recess 5 is divided into two areas 3a and 3b divided at the center position of the height of the crosspiece.
In the area 3a on the side to which the partition wall 4 does not belong,
It is formed without cutting out the partition wall 4.

As described above, the plurality of crosspieces 3 having the same structure each having the interlocking recesses 5 formed on one side are assembled into the surface lattice main body 1 shown in FIG. 1 by fitting the interlocking recesses 5 into each other. , at this time the fourth
As shown in the figure, one side 4a of the partition wall 4 of the two intersecting crosspieces 3 comes into surface contact with each other at a portion corresponding to the bottom of the engaging recess 5. By applying an appropriate adhesive to the cut end surface 6a of the circumferential wall 6 of the crosspiece 6, which forms the side surface of the mating recess 5, the crosspieces 3 can be adhesively bonded to each other at the positions a corresponding to the lattice intersection points. Further, instead of the adhesive described above, or in combination with the adhesive, blind rivets 7 can be used to join the intersecting beams 3 together, as shown by imaginary lines in FIG. In this case, the rivet 7 is attached from the back side of the grid main body 1,
The head 7a is connected to the narrow side space 8 of the two internal spaces 8a and 8b divided by the partition wall 4.
It is stored in b.

The frame-shaped outer frame 2 is fitted and fixed as necessary to the outer periphery of the screen grid main body 1 assembled as described above. 4 connected to each other in
The crosspieces 3 located on the outer periphery of the grid main body 1 are assembled by the book outer frame sashes 9 and are fitted into each sash 9 by blind rivets, adhesives, or It is connected by both. Of course, this frame-shaped outer frame 2 is not essential to the present invention, and can be omitted depending on the application.

(Effects of the invention) As described above, according to the invention, the partition walls that are continuously provided inside the crosspiece in the longitudinal direction are offset from the center of the height of the crosspiece to one side, and the partition walls are Since one side of the wall is located at the center of the height of the crosspieces, when manufacturing the grid, the peripheral wall portions of the intersecting crosspieces on the side to which the partition wall does not belong are cut out. After each of the interlocking recesses is formed, it is only necessary to fit the two interlocking recesses together. As a result, one side of the partition walls of both crosspieces come into contact with each other, and the two crosspieces fit into each other exactly in half, and the surfaces of the two crosspieces can be quickly formed into a neatly aligned surface lattice. It can be easily manufactured. In addition, in the fitted state of both crosspieces mentioned above,
Since one side of the partition walls is in surface contact with each other, a durable surface lattice can be obtained by gluing the contact surfaces together with an adhesive or joining the partition walls together with rivets.

[Brief explanation of drawings]

Figure 1 is the overall front view, Figure 2 is A- of Figure 1.
3 is a perspective view of the crosspiece, and FIG. 4 is a vertical cross-sectional view of the crosspiece fitting portion. 1... Surface lattice body, 2... Frame-shaped outer frame, 3...
Crosspiece material, 4... Partition wall, 5... Engagement recess,
7...Blind rivet, 9...Sash for outer frame.

Claims (1)

[Scope of utility model registration request] It is a surface lattice in which a plurality of crosspieces each having interlocking recesses with a depth of half the height of the crosspieces formed at positions corresponding to each grid intersection point are assembled in a grid pattern by fitting the interlocking recesses into each other. So, each of the above-mentioned crosspieces is
It has a hollow cross-sectional shape having a partition wall continuous in the length direction, one side of which is located at the center of the height of the crosspiece, and the interlocking recess is half the height of the crosspiece on the side to which the partition wall does not belong. A planar lattice structure formed by regions.