JPH0144199Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a structure for concealing the edge of a profile in which the open end and cut surface of the profile are closed by bending the side wall of the profile itself.

Conventionally, for example, in a shape used for a fence grid, a separate resin cap was fitted or screwed onto the open end (edge) of the grid, or a cast metal cover was similarly installed. The caps were closed by screwing them together to improve the exterior design and prevent corrosion caused by rainwater infiltration and danger from human contact.However, in the case of resin caps, the material deteriorates after long-term use. However, the fitting becomes loose, exposing the edges or falling off, and when using a cast metal cover, the cost is high and there are disadvantages in that it requires complicated screw-fastening work.

This invention improves the above-mentioned drawbacks of the conventional method, and covers and closes the edge of the cut end surface by bending the side wall of the rectangular section itself. By doing this, it is possible to easily prevent corrosion and danger to the human body due to the intrusion of rainwater at a low cost.

To explain this using an example shown in the drawings, what is shown in FIG. 1 is an unprocessed section A, and as shown in FIG. By doing so, a bent piece 2 having a length that can cover the open end 1 is formed, and then this bent piece 2 is bent. By this bending process, the cut surface 12 created when the bent piece 2 was formed is concealed, and at the same time, the open end 1 is also closed (FIG. 2B). In the structure shown in FIG. 3, the ends of a pair of opposing side walls 3, 3 are notched in an arc shape at the end of the profile A, and the remaining pair of opposing side walls are bent into pieces 2, 3. 2, the opposing bent pieces 2, 2 are bent along the arcuate cut surfaces 13 of the other walls 3, 3,
The mutual edges of the bent pieces 2, 2 are brought into contact at the center. As a result, the open end 1 has both bent pieces 2, 2
The arcuate cutting surface 13
The cut end surfaces 14 of the bent pieces 2, 2 themselves are also all hidden.

In this case, the dimension l of each bent piece 2, 2 is
By making the length of the other walls 3, 3 slightly longer than half of the arc, when the edges of the bent pieces 2, 2 abut against each other, the mutual abutment becomes strong, and spring back can be prevented.

For the above processing, for example, a curling die 10 shown in FIG. 4 can be used. This curling die 10 has a hole 11 in the center thereof, which has the shape when the edge 1 is closed by the side wall 2, that is, the tip is rounded and the opening has the cross-sectional shape of the section. Insert the profile A in the shape of A in the figure. The tip of the shape member A inserted into the hole 11 is
It is bent according to the inner shape, and the edges of both side walls 2, 2 abut and come into close contact at the central portion, resulting in the shape shown in FIG. 3B. By processing using this curling die 10, it is easy to obtain a complex shape with a rounded appearance and in which both side wall edges are firmly adhered.

5 to 7 show the closed state of the edges 1 having different shapes, and in FIG. 5, instead of the shaft and the arcuate cutting surface 13 of FIG. The cut surface 13a perpendicular to the other side is hidden by a pair of opposing bent pieces 2, 2, and the open end is also covered and closed, and FIG.
The edge is inclined, and after cutting the end of the profile A diagonally 8, the opposing side wall 3 in the inclined state is cut out diagonally to make it into the state B, and the remaining opposing side wall is cut out. The bent pieces 2, 2 may be bent onto the open end 1 and closed.

FIG. 7 shows the case of a profile A in which a concave groove 15 is formed by connecting protruding pieces 5 to the side walls 3, 3. By cutting out the partition wall 14 and using the remaining side wall as a bent piece 2, the bent piece 2 is bent to close the hollow part of the profile and the open end of the groove 15. At the same time, the cut surface 13 produced by the cutting process is also concealed. The tip of the bent piece 2 that covers the entire edge 1 is bent along the curved edge of the other protruding piece 5, but there is a step 1 corresponding to the thickness of the profile at the lower end of the curved edge.
6, the distal end edge 17 of the bent piece comes into close contact with the side edge of the protruding piece, thereby preventing rainwater from entering and danger to the human body.

FIGS. 8 and 9 show other embodiments.
When covering the entire opening end (edge) as shown in the figure, leave the upper bent piece 2 and cut out the other side parts, and fold the upper bent part downward. It is sufficient to cover the groove by bending it, and as shown in FIG. 9, when coating only the groove part, leave the wall surface 2 forming one side wall of the groove as a bent piece and cut the other parts. By cutting the cutout (FIG. 9, b) and then bending the extending portion, the above portion can be easily closed.

Furthermore, in FIGS. 10 to 12, the four circumferential side walls constituting the profile are bent inward at the ends to abut not only the opposing edges but also the adjacent edges to close the edges.

This idea is structured as described above, so
The opening can be closed with simple machining, and since there is no need for an opening cap, screws, or rivets to secure it, the opening end can be closed reliably at low cost, preventing leakage and posing no danger to the human body. It has the remarkable effect of not giving any

[Brief explanation of the drawing]

FIG. 1 shows a profile, FIGS. 2, 3, and 5 to 12 show examples of the edge of this invention, and FIG. 4 shows the state of processing with a curling die. A... Shape, 1... Open end (edge), 2,
3...Side wall, 4...Joint part, 5...Protruding piece, 6...
...Curved edge, 7,9...Removed portion, 10...Curling die.

Claims (1)

[Claims for Utility Model Registration] (1) A side wall forming a rectangular section has a bent piece extending in the longitudinal direction, and this bent piece is used to close the opening of the section. and a structure for concealing the edge of a profile, comprising a portion for concealing the cut surface produced by the formation of the bent piece, and the opening and the cut surface are concealed by bending the bent piece. (2) Practical use in which the bent piece is formed by extending in the longitudinal direction of at least one of the side walls forming a section with a rectangular cross section by cutting out the side wall adjacent to the side wall. A structure for concealing the edge of a shape material as set forth in claim 1 of the patent registration claim. (3) Utility model registration claim 1, in which the bent pieces are formed by extending in the longitudinal direction of each of the side walls forming a section with a rectangular cross section by cutting out the corner portions of adjacent side walls. Concealing structure for the edge of the profile described in Section 2.