JPS5927811Y2 - aluminum curtain box - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of an aluminum curtain box.

As shown in FIG. 1, a conventional aluminum curtain box is constructed by fixing closing plates 22 to both ends of a box body 21 having a substantially U-shaped cross section and having flanges 21a, 21a on both sides with screws 23. It is installed by being embedded in the

In this case, the ceiling plate 24 is connected to the flange 2 of the box body 21.
1 a and 21 a, but since the closing plate 22 does not have such a flange, there is a problem in that the gap between it and the ceiling plate is exposed and spoils the appearance.

In order to solve this problem, as shown in FIG. 2, flanges 22 a may be provided on the closing plate 22 as well. In order to cut the box body 22a at 45 degrees and match the two cut surfaces without any gaps, it is necessary to cut the box body 21 as shown in FIG. Since it protrudes beyond the cutting surface A, when forming the cutting surface A, the cutting surface a gets in the way and makes it impossible to operate the cutter, which is actually impossible in terms of workmanship.

In addition, 25 in FIG. 2 is a protrusion for screwing the screw 23.

The present invention was developed in view of the above circumstances, and its purpose is to connect the flange of the box body and the flange of the closing plate to four
To provide an aluminum curtain box which can be fitted without a gap at a 5° cut surface and can be easily processed.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

First, in FIG. 1, a box main body 1 is formed by continuous molding of aluminum, for example by extrusion, into a substantially U-shaped cross section, and has a curtain rail 2 and reinforcing T-shaped bars 3 on the inside and outside of its top wall 1a. and both side walls 1b, l
The lower edge of b has outward facing flanges 4, 4.

At both ends (only one end is shown) of the box body 1, a portion extending from the flanges 4, 4 to both side walls 1b, lbT is connected from the tips of the flanges 4, 4 to the side walls 1b, 1b.
Continuous cuts are made at an angle of 45° so that the width of the notch increases gradually toward b, and a substantially horizontal cut is made at the bottom of both side walls 1b and lb from the end to the upper end of the above-mentioned 45° cut line A. The area surrounded by the 45° cutting line A and the horizontal cutting line B is cut out, and a semi-perpendicular notch surface 5 is formed in the area extending from the flange 4.4 to the lower part of both side walls 1b and lb. ,5
is formed.

Also, cut the curtain rail 2 from its end to the horizontal cutting line B.
An amount C corresponding to the maximum length of is removed.

On the other hand, the closing plate 6 is formed by continuous molding of aluminum, for example by extrusion, and has substantially C-shaped protrusions 8 on the upper and lower sides of the outer side of the lid plate part 7 attached to both ends of the box body 1. It has two stages, and has an outward flange 9 at the lower edge of the cover plate part 7.

On both sides of the closing plate 6, a notch 45 is cut out at a portion extending from the flange 9 to the side end portion of the cover plate portion 7 so that the width of the notch increases sequentially from the tip of the flange 9 toward the side end of the cover plate portion 7. Continuously cut at an angle of °, and cover plate part 7
The lower part of the cover plate 7 is cut approximately horizontally from both sides thereof to the above-mentioned 45° cut line, and both sides of the cover plate part 7 are cut at right angles and perpendicularly from its upper end to the above-mentioned horizontal cut line E. The area surrounded by the 45° cut line, the horizontal cut line E, and the vertical cut line F is cut out, and a half cut is made in the area extending from the flange 9 to the lower side end of the cover plate part 7. Right angle notch surface 10
At the same time, a semi-perpendicular notch surface 10 is formed at the side end of the cover plate part 7.
A right-angled cutout surface 12 is formed extending upwardly through the stepped portion 11.

The height G of the closing plate 6 is equivalent to the height H from the lower surface of the flanges 4, 4 of the box body 1 to the lower surface of the upper wall 1a, and the width J between the right-angled cross-cut planes 10 of the cover plate 7. is the dimension K between the inner surfaces of both side walls 1b and lb of the box body 1, and the height dimension of the half-right angle notch surface 10 of the closing plate 6 is the height dimension M of the half-right angle notch surface 10 of the box body 1, respectively. Set equal.

Further, 13 is a through hole for the mounting screw 14 and the protrusion 8 of the closing plate 6.
It is located correspondingly.

Then, the cover plate part 7 of the closing plate 6 is inserted into the box body 1 until it comes into contact with the curtain rail 2.

Then, the semi-right angle notch surface 10 of the closing plate 6 forms the box body 1.
The right-angled notch surface 12 of the cover plate 7 abuts against the inner surface of both side walls 1b and 1b of the box body 1 (see FIGS. 5 and 6).

In this state, insert the mounting screw 14 through the hole 13 into the closing plate 6.
Screw onto the protrusion 8 of.

If the box main body 1 (see Fig. 4) with the closing plate 6 attached in this way is buried in the ceiling, the ceiling plate will be placed on the flanges 4, 4 of the box main body 1 and the flange 9 of the closing plate 6, so that There will be no gaps between the ceiling panel and the ceiling board.

Moreover, the flanges 4, 4 of the box body 1 and the flange 9 of the closing plate 6 are fitted together without a gap at the semi-right angle notched surfaces 5 and 10, and the right-angled notched surface 12 and the upper end surface of the closing plate 6 are also aligned with the inner surface of the box body 1. The appearance will improve as the surface will come into contact with the surface without any gaps.

Further, the cut lines A and B for forming the semi-perpendicular notch surface 5 in the box body 1 are vertical and horizontal directions, respectively, and the semi-perpendicular notch surface 10 and the stepped portion 11. A cut line for forming a right-angled notch surface 12.

Since E and F are also vertical and horizontal, each cut line A
, B, D, E, and F are not obstructed by the non-cut portion, the cutter can be moved freely, and processing can be easily performed.

As explained above, the present invention has excellent practical effects in that the flange of the box body and the flange of the closing plate can be fitted together without any gaps at a 45° cut plane, and can be easily processed. play.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional curtain box, Fig. 2 is a perspective view for explaining processing problems, Figs. 3 to 6 show an embodiment of the present invention, and Fig. 3 is a perspective view showing a conventional curtain box. 4 is an exploded perspective view, FIG. 4 is a perspective view showing the assembled state, and FIGS. 5 and 6 are cross-sectional views taken along lines V-V and VI-VI in FIG. 4, respectively. In the figure, 1 is the box body, 2 is the curtain rail, 4 is the flange, 5 is the semi-right angle notch, 6 is the closing plate, 7 is the lid plate,
8 is a protrusion, 9 is a flange, 10 is a semi-right-angled notch surface, 11 is a step, and 12 is a right-angled notch surface.

Claims (1)

[Scope of utility model registration request] A box body formed by continuous aluminum molding and having an approximately U-shaped cross section with outward flanges on the lower edges of both side walls;
It is formed by continuous molding of aluminum, and has protrusions for attaching screws at predetermined parts of the lid plate part attached to both ends of the box body, and has an outward flange on the lower edge of the lid plate part. a closing plate, and at both ends of the box body, a portion extending from the flange of the box body to the lower side wall is formed at an angle of 45° so that the width of the notch increases sequentially from the tip of the flange toward the side wall of the box body. At the same time, on both sides of the closing plate, a portion extending from the flange of the closing plate to the lower side end of the lid plate portion is sequentially cut out from the tip of the flange toward the side edge of the nose plate portion. 4 so that the notch resection width is large.
A notch is formed at an angle of 5° to form a semi-right-angled notch surface, and a right-angled notch is formed by notching at a right angle above the half-right-angled notch surface at the lower side end of the lid plate part through a step, and the closing plate is cut out at a right angle. Insert the lid plate part inside the box body, abut the semi-right-angled notched surfaces of both sides, and bring the right-angled notched surfaces at the side ends of the lid plate into contact with the inside surface of the box body. Aluminum curtain box.