JP2002327585A - Method of mounting grille - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grille mounting structure for preventing a grille mounted in a window frame from being loosened with the elapse of time by wind pressure and other causes such as vibration or microscopic vibration. SOLUTION: In this structure, in which a mounting fitting 14 mounted at one side to the frame of the grille and having formed on the other side a folding part 15 which fits over the ear part 12 of the window frame 11 has its folding part 15 fitted over the ear part 12 of the window frame 11 to mount the grille 13 in the window frame 11, through holes 19 are cut in at least two portions of the folding part 15 and an anvil is applied to one side of the folding part 15; a punch is driven in from the through holes in the other side and fixed in place. The inside diameter of the through hole 19 cut in the folding part 15 is 3.5 to 5.0 times as large as the thickness of the ear part 12 of the window frame 11 and the outside diameter of the punch is equal to or slightly greater than a size obtained by subtracting twice the thickness of the ear part 12 of the window frame 11 from the inside diameter of the through hole 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a screen grid to a window frame without using screws.

[0002]

2. Description of the Related Art To attach a surface grid to a window frame, as shown in FIG. 4, a folded portion 45 of a mounting member 44 of a surface grid 43 is fitted into an ear portion 42 of a window frame 41 and provided on the folded portion 45. A screw 47 has been screwed into the female screw 46.

[0003]

However, the thickness of the ear portion of the window frame is about 1 mm, and if it is screwed to such a thin portion (material is aluminum), it will be firmly attached when it is attached. However, there is a problem that loosening occurs with the passage of time due to wind pressure and other vibrations and minute vibrations. Further, since the work is performed in a narrow portion, much time is required for the mounting work.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a surface lattice mounting structure in which a surface lattice mounted on a window frame is not loosened over time due to wind pressure or other vibrations / micro vibrations. I do.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a mounting bracket having a folded portion which is mounted on one side of a frame of a plane lattice and the other side of which is fitted into an ear of a window frame. In the structure in which the folding part is fitted to the ear of the window frame and the surface grid is attached to the window frame, through holes are formed in at least two places of the folding part, and an anvil is addressed to one surface of the folding part, and The punch is driven and fixed from the through-hole, and the inner diameter of the through-hole formed in the folding portion is
The thickness of the edge of the window frame is 3.5 to 5.0 times, and the outer diameter of the punch is equal to or slightly smaller than the inner diameter of the through hole minus twice the thickness of the window frame ear. It is designed to be larger.

According to the present invention configured as described above, after the surface grid is mounted on the window frame, a good mounting state is maintained regardless of the lapse of time, and the number of steps of the mounting operation can be greatly reduced. .

When the inner diameter of the through hole is set to be 3.5 to 5 times the thickness of the ear portion of the window frame, if the thickness is less than 3.5 times, a large force is required for driving the punch. This is because a crack is generated in the portion, and when it exceeds 5 times, the caulking effect becomes insufficient.

In addition, the reason why the outer diameter of the punch is the same or slightly larger than the inner diameter of the through hole minus twice the thickness of the window frame ear is that the crimping effect is insufficient when the punch is thin. This is because, when the thickness is large, shearing works between the ears of the window frame and the through holes.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. In the first embodiment shown in FIG. 1A, the mounting member 14a on the side of the window frame 11 and the mounting member 14b on the side of the surface grid 13 are rotatably connected by pins 22 and the mounting member 14b on the side of the surface grid 13. Is screwed 17 with an addressing plate 16 interposed.

The mounting member 14a on the window frame side has a fold 1
5 is formed, a through hole 19 is formed in that portion,
An ear 12 of the window frame 11 is fitted into the folded portion 15, and an anvil 20 of a crimping tool (not shown) is applied to one surface thereof as shown in FIG. 3, and a punch of the crimping tool is passed through a through hole 19 on the other surface. 21 to insert the material of the ear 12 into the through hole 19.
Projecting toward the window frame 11 so that the mounting member 14a
(See FIG. 2).

In the second embodiment shown in FIG. 1B, an attachment member 14a attached to the window frame 11 and an attachment member 14b attached to the surface grid 13 have two links 18a, 1a.
8b are connected to pins 22a, 22c and the like (the pins on the side of the mounting member 14b are not shown in the drawing), and the mounting member 14b on the side of the surface lattice 13 is screwed 17 with an addressing plate 16 interposed therebetween.

The mounting member 14a on the window frame side has a fold 1
5 is formed, a through hole 19 is formed in that portion,
An ear 12 of the window frame 11 is fitted into the folded portion 15, and an anvil 20 of a crimping tool (not shown) is applied to one surface thereof as shown in FIG. 3, and a punch of the crimping tool is passed through a through hole 19 on the other surface. 21 to insert the material of the ear 12 into the through hole 19.
Projecting toward the window frame 11 so that the mounting member 14a
(See FIG. 2).

The mounting member 14b on the side of the surface lattice 13 and the mounting member 14a on the side of the window frame are not shown in the drawing, and are not shown.
And the links 18a and 18b, and by operating the wing nut 23, the two links 18a and 18b bend and extend about the pins on the surface lattice side and the pins 22a and 22c.

Here, the mounting member 14 of the first embodiment is placed above the window frame 11, and the mounting member 14 of the second embodiment is used.
When the surface lattice 13 is attached with the lower side of the window frame 11, by operating the wing nut 23, the lower side of the surface lattice 13 can be extended with respect to the window frame 11 to be able to escape.

When it is not necessary to make the surface grid 13 detachable, the mounting member 14 is integrated into the window frame side and the surface grid side without being divided, and the surface grid 13 is mounted on the window frame 11 as described above.

Here, since the thickness of the ear portion 12 of the general window frame 11 is manufactured to be 0.8 mm to 1 mm, the thickness of the through hole 1 is small.
9 has an inner diameter in the range of 3.5 mm to 4 mm for 0.8 mm,
In the case of 1 mm, 3.5 mm to 4.5 mm is appropriate, but changing the inner diameter of the through hole 19 of the mounting member 14 according to the thickness of the ear portion 12 of the window frame 11 depends on the type of the punching die. Since it is necessary to prepare a lot and it is not preferable from the economical point of view, the thickness is set to 4 mm which can satisfy both.

Here, when the inside diameter of the through hole is reduced, the diameter of the protrusion protruded by the punch becomes small, and the fixing force becomes insufficient. In addition, there is a limit in increasing the inner diameter of the through hole due to the structure and dimensions of the ears of the window frame.
Is the upper limit.

The outer diameter of the punch depends on the inner diameter of the through-hole, and is set to a size obtained by subtracting twice the thickness of the ear portion of the window frame from the inner diameter of the through-hole or a size slightly larger than that.

If the outer diameter of the punch is too small, the crimping margin is insufficient, and if it is too large, shearing works between the punch and the through-hole to shorten the life of the mounting portion.

Next, in order to confirm the effect of the present invention, an attachment member made of a stainless steel plate having a thickness of 1 mm is attached to a window frame 11 having a thickness of 1 mm of the ear portion 12 (FIG. 1A,
(Refer to (b)), a screen lattice with a width of 90 cm and a height of 80 cm was attached to the window frame 11, and the looseness of the attachment portion after a minute vibration of amplitude 0.2 mm × 60 cycles was given for 24 hours. The loosening of the screw according to the prior art was recognized, but the loosening of the screw according to the present invention was not at all.

Further, the conventional one requires a long working time because it requires threading of a screw hole and screwing work. However, according to the present invention, screwing is not required, and a crimping tool is used instead of screwing. Work time can be greatly reduced.

[0022]

As described above, according to the present invention, the mounting of the surface grid is ensured, and the working time can be shortened without loosening even after many years of use.

[Brief description of the drawings]

FIG. 1A is a perspective view of a first embodiment according to the present invention. FIG. 1B is a perspective view of a second embodiment.

FIG. 2A is a cross-sectional view of a swaged portion.

FIG. 3B is an explanatory view of a caulking condition.

FIG. 4 is a diagram showing a state of attachment of a (a) surface grid according to the related art;
(B) Enlarged view of the main part

[Explanation of symbols]

 11, 41 Window frame 12, 42 Ear portion 13, 43 Surface lattice 14, 44 Mounting member 14a Mounting member (window frame side) 14b Mounting member (plane lattice side) 15, 45 Folding portion 16 Destination plate 17 Screwing 18a Link (Window frame side) 18b Link (plane lattice side) 19 Through hole 20 Anvil 21 Punch 22 Pin 22a Pin (Window frame side) 22c Pin (Link connecting portion) 23 Wing nut 24 Projection 46 Female screw 47 Screw screw

Claims (5)

[Claims] 1. A mounting bracket, one of which is attached to a frame of a plane lattice and the other of which is formed with a folded portion which fits into a lug of a window frame, is fitted to the lug of the window frame, and the fitting is fitted to the lug of the window frame. In the structure for attaching a lattice, through holes are formed in at least two places of the folded portion, an anvil is addressed to one surface of the folded portion, and a punch is driven and fixed from the through hole on the other surface. Grid mounting method. 2. The surface according to claim 1, wherein the inner diameter of the through-hole formed in the folding portion is 3.5 to 5.0 times the thickness of the ear portion of the window frame. Grid mounting method. 3. The method according to claim 1, wherein the outer diameter of the punch is set to the following condition with respect to the inner diameter of the through hole. Note Outer diameter of punch ≧ Inner diameter of through hole−Thickness of window frame ear × 2 4. The mounting bracket according to claim 1, wherein the mounting bracket comprises two parts, one of which is mounted on the window frame and the other of which is mounted on a surface lattice, and both are rotatably connected by pins. Grid mounting method. 5. The mounting bracket according to claim 1, wherein the mounting bracket is composed of two parts, one of which is mounted on the window frame and the other of which is mounted on the surface lattice, and both are connected by at least two links and pins.
4. The method of attaching a surface grid according to any one of claims 3 to 3.