JPH04368590A - Connecting method for slat in building shutter - Google Patents

Abstract

PURPOSE:To improve the accuracy of caulking dimensions and to prevent the deformation of a slat by engaging the end of a plastically deformed part formed at the end of the slat on one side with the end of the engaging notched part of the slat on the other side. CONSTITUTION:Engaging notched parts 10c, 11c are previously formed on interlock parts 10b, 11b on one side in a vertical direction at the ends of both the sides of each of slats 10, 11. Caulking holes 10d, 11d are drilledly provided near interlock part 10a, 11a on the other side at a position suited to the ends of engaging notched parts 10b, 11b. The interlock part 11a where the caulking hole 11d of the slat 11 on the other side is formed is connected to the slat 10 of the interlock part 10b where the engaging notched part 10c is formed. An extent which partially involves the caulking hole 11d and extends to the end of the slat 11 is plastically deformed by a pressing means such as a punch 16 or the like. The end of a plastically deformed part 11e protruding to a side opposite to the slat 11 on one side is engaged with the end of the engaging notched part 10b of the slat 10 on the other side.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method for connecting slats used in architectural shutters.

0002

2. Description of the Related Art A common method for connecting slats is as follows. FIG. 6 is a perspective view showing a method of connecting the interlock portions of the slats, FIG. 7 is a perspective view showing a state in which the slats are connected, and FIG. 8 is a side view showing a means for caulking the slats.

As shown in FIG. 6, the slats 1 and 2 are molded from steel plates or steel strips, and have upper interlock portions 1a and 2a and lower interlock portions 1b and 2, respectively.
b is formed. Further, the lower interlock portions 1b, 2b at both ends of the slats 1, 2 in the longitudinal direction are formed with engagement notches 1c, 2c cut out at a predetermined dimension at a substantially right angle. The slats 1 and 2 formed as described above have a
The other slat 2 is moved in parallel from the longitudinal direction as shown by the arrow to connect the interlock portions 1b and 2a.

Next, as shown in FIG. 8, the connected slats 1 and 2 are connected at the upper part of a female die 3 having a generally triangular cross section and having an arcuate recess at the top. The upper interlock portion 2a is caulked from above using a punch 4. The punch 4 has a cutting edge formed in a part of the tip having an arcuate shape with an angle in the width direction, and as shown in FIGS. A plastically deformed portion 2d is formed by caulking at a position closer to the end than the cutout end 1b' of the lower interlock portion of the slat 1. By this tearing process, a torn edge 2d' is formed at one end of the recessed plastically deformed part 2d, and this torn edge 2d' and the lower interlock part notch end 1b' are engaged, and the slats 1 and 2 are It is designed to prevent horizontal displacement. As described above, the work of connecting the slats 1 and 2 is performed by automatic assembly.

[0005]

However, according to the conventional slat connection method, as shown in FIG.
Since the female die 3 is incomplete as a receiver and the lower interlock part 1b of the slat 1 partially plays the role of the die, the plastic deformation part 2d on the curved surface cannot be smoothly and precisely formed, and the peripheral part Problems such as deformation occurred. Furthermore, since the tearing process is not performed with high precision, variations occur in the forming position from the slat 2 end to the tear end 2d', that is, the caulking dimension The degree has increased.

The present invention has been made in view of the above-mentioned problems, and aims to provide a method for connecting slats that improves the accuracy of caulking dimensions, reduces stress on the slats, and prevents deformation. .

[0007]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a method for connecting the upper and lower interlocking parts of the slats of an architectural shutter to the interlocking parts of other slats in advance. An engagement notch is formed in the interlock part of the interlock part, and a caulking hole is bored in the vicinity of the other interlock part at a position corresponding to the end of the engagement notch. After connecting the interlock part in which the caulking hole of another slat is formed to the slat of the lock part, the area including a part of the caulking hole and toward the end of the slat is plastically deformed by a pressurizing means. This is a method of connecting slats in an architectural shutter, in which the ends of the plastically deformed parts protruding on the opposite side of one slat are engaged with the ends of the engaging notches of the other slat.

[0008]

[Operation] According to the slat connecting method of the present invention, each slat has an engaging notch and a caulking hole formed in advance, so after connecting the interlocking portions of each slat, the caulking hole is opened. By plastically deforming the area including a part of the slat toward the end using a pressurizing means, the deformed part protrudes to the opposite side of the slat, and the inner circumferential surface of a part of the caulking hole becomes the plastically deformed end of the predetermined dimension. Therefore, it can be accurately engaged with the engagement notch end of another slat.

[0009]

[Embodiment] An embodiment of the present invention will be explained based on the drawings. FIG. 1 is a side cross-sectional view showing the state in which the slats are caulked, FIG. 2 is a side cross-sectional view showing the state before the slats are caulked, and FIG. 3 is a perspective view showing the connected state of the slats.

As shown in FIG. 3, engagement notches 10c, 11c are formed at both ends of each slat 10, 11 by cutting out the vicinity of the lower interlock portions 10b, 11b at a substantially right angle, and Caulking holes 10d and 11d, which are square holes, are formed in advance in the vicinity of the upper interlock parts 10a and 11a at positions closer to the ends than the interlock part cutout ends 10b' and 11b' (see FIGS. 1 and 2), respectively. It has been done.

Each slat 10, 1 formed as described above
1 connects the lower interlock part 10b of the slat 10 to the upper interlock part 11a of another slat 11, as in the conventional example. Next, as shown in the figure, the female die 1
The connecting portion of both slats 10 and 11 is placed on top of the slats 5 and caulked using a punch 16.

For caulking, a punch 16 having an arcuate tip and no angle in the width direction, and a female die 15 paired with the punch 16 having an arcuate concave top are used. Pressure is applied to the range from the position where the side end partially closes the caulking holes 10d, 11d to the end of the slat 11 using a punch 16 having a thickness slightly smaller than the vertical dimension of the caulking holes 10d, 11d. . As shown in FIG. 2, when pressure is applied from above the upper interlock portion 11a of the slat 11 with the punch 16, the end of the slat 11 is pressed from the inner peripheral surface of a portion of the caulking hole 11d, as shown in FIGS. 1 and 3. Plastic deformation part 1 with a uniform depth over the area
1e is formed and protrudes in a curved manner on the opposite side of the slat 11.

Since the caulking hole 11d of the slat 11 is pre-formed at a predetermined size position, the caulking process using the punch 16 can be carried out smoothly without adding large stress to the surrounding area, and the stress can be reduced. Through this reduction, deformation of the slats is eliminated. Furthermore, since the plastically deformed portion end 11e' is formed at a predetermined dimensional position, the caulking dimension X can be kept constant, and accurate engagement with the lower interlock portion notch end 10b' of the slat 10 is possible. There is no problem of one side falling down or one side.

Next, examples of other slat configurations will be explained. Figure 4 is a plan view showing the state in which small slats are connected, Figure 5
FIG. 2 is a side sectional view showing a means for caulking a small slat. The small slats 20 and 21 have a relatively smaller total height than the general slats of the previous embodiment, and have upper interlock parts 20a and 21a and lower interlock part 2.
0b and 21b are each curved in opposite directions.

At both ends of each slat 20, 21, engagement notches 20c, 21c are formed by cutting out the vicinity of the lower interlock portions 20b, 21b at a substantially right angle, and the ends of the lower interlock portion notches are formed. 20b', 21b
Caulking holes 20d and 21d, each consisting of a small round hole bored in the center, are formed in advance in the vicinity of the upper interlocking parts 20a and 21a at positions slightly closer to the ends than those shown in FIG. Since the slats are small, the caulking holes 20d and 21d cannot be made as large holes as in the previous embodiment, so caulking facilitates cutting from those parts and reduces stress on the slats 21. A minimum round hole is sufficient.

Each slat 20, 2 formed as described above
1, the upper interlock part 21a of another slat 21 is connected to the lower interlock part 20b of the slat 20, and as shown in FIG. give

Specifically, the lower die 26 has a triangular mountain shape in cross section, and extends from the bottom of the slat 21 from the position where one end thereof closes approximately half of the caulking hole 21d to the end of the slat 21. Apply pressure. On the other hand, the upper punch 25 has a substantially L-shaped cross section, and is positioned near the center of the slat 21 with the caulking hole 21d as a boundary from above the slat 21 as a presser. This upper punch 25 is the slat 2
After descending from above 1, the upper interlock part 21a
It is moved to the bottom and fixed in place. Therefore, as shown in FIG. 5, at a position 25' (see FIG. 4) where the upper punch 25 presses the center of the slat 21 with the caulking hole 21d as a boundary, the lower die 26 presses the slat 21.
1 to form a chevron-shaped plastically deformed portion 21e with an even depth at the end of the slat 21.

As described above, since the crimping holes 20d and 21d are formed in advance in the small slats 20 and 21, crimping can be carried out smoothly and stress on the slats is reduced. In addition, since the caulking dimension X is formed as a predetermined dimension, the plastically deformed portion end 21e' engages with the lower interlock portion notch end 20b' of the other slat 20 with high accuracy, resulting in sagging, shifting, etc. No problems occur.

According to the slat connecting method of the present invention, each slat has an engaging notch and a caulking hole formed in advance, so after connecting the interlocking parts of each slat, By plastically deforming the area including part of the hole and toward the end of the slat using a pressurizing means,
A deformed portion protrudes from the opposite side of the slat, and a portion of the inner peripheral surface of the caulking hole is formed as an end of a plastically deformed portion having a predetermined dimension. Therefore, since the crimping hole is formed in advance, crimping by the pressure means can be performed smoothly.
Processing can be performed without adding large stress to the surrounding area of the slat, reducing stress and eliminating deformation of the slat. In addition, since the caulking hole is preformed at a predetermined size position, the end of the plastically deformed part is formed at a predetermined position and a constant caulking dimension is obtained, and the end of the cutout part of the lower interlock part of another slat is formed at a predetermined position. Accurate engagement is possible, and problems such as slats falling to one side or shifting to one side do not occur.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a state in which the slats are caulked.

FIG. 2 is a side cross-sectional view showing the state before the slats are caulked.

FIG. 3 is a perspective view showing a state in which the slats are connected.

FIG. 4 is a plan view showing a state in which small slats are connected.

FIG. 5 is a side sectional view showing caulking means for the small slat.

FIG. 6 is a perspective view showing a conventional method of connecting interlocking portions of slats.

FIG. 7 is a perspective view showing a connected state of slats according to a conventional example.

FIG. 8 is a side view showing a conventional slat caulking means.

[Explanation of symbols]

X: Caulking dimensions 10, 11: Slats 10a, 11a: Upper interlock portions 10b, 11b
: Lower interlock part 10b', 11b': Lower interlock part notch end 10c. 11c: Engagement notches 10d, 11d: Caulking hole 11e: Plastic deformation part 11e': Plastic deformation part end 15: Male die 16: Punches 20, 21: Small slats 20a, 21a: Upper interlock part 20b, 21b
: Lower interlock part 20b', 21b': Lower interlock part notch end 20c, 21c: Engagement notch part 20d, 21d: Caulking hole 21e: Plastic deformation part 21e': Plastic deformation part end 25: Upper punch 26: Lower die

Claims (1)

[Claims] Claim 1: When connecting the upper and lower interlock portions of the slats of an architectural shutter to the interlock portions of other slats, engagement notches are formed in advance in the upper and lower interlock portions at both ends of each slat, and A caulking hole is bored near the other interlock part at a position corresponding to the end of the engagement notch, and the caulking hole of the other slat is formed in the slat of the interlock part in which the engagement notch is formed. After connecting the formed interlock portions, a pressure means is used to plastically deform an area including a portion of the caulking hole and toward the end of the slat, thereby forming a plastically deformed portion that protrudes to the opposite side of one of the slats. A method for connecting slats in an architectural shutter, characterized by engaging the end of the slat with the end of an engaging notch of another slat.