JP2020002549A - Device and method for bending horizontal misalignment regulation piece of slat end metal fitting - Google Patents

Abstract

To easily bend a horizontal misalignment regulation piece of a slat end metal fitting even when a wind resistant hook is provided to a hook adjacent to the slat equipped with the end metal fitting.SOLUTION: This device for bending a horizontal misalignment regulation piece of a slat end metal fitting comprises: a head 40 that includes a groove 42 fittable around the horizontal misalignment regulation piece 21; a first shaft 41 that is integrated with the head 40 and extends along a first axis X; and a second shaft 51 that is connected to the first shaft 41 and extends along a second axis Y orthogonal to the first shaft X, and is configured such that the first axis X coincides with the depth direction of the groove 42, and the first shaft 41 and the head 40 rotate about the first axis X through rotation around a connection part of the second shaft 51 of the second shaft 51 and the first shaft 41.SELECTED DRAWING: Figure 9

Description

TECHNICAL FIELD The present invention relates to a bending device and a bending method for a lateral displacement regulating piece of a slat end piece.

In a shutter curtain formed by rotatably connecting long slats to each other, the shutter slats are connected by sliding the connecting portion of the other slat into the connecting portion of the other slat from the longitudinal direction of the slat. In such a case, a so-called caulking method or end fitting method is used as a means for restricting the lateral displacement of the slats forming the shutter curtain in the horizontal direction.

In a shutter curtain of a heavy shutter, an end fitting method is usually employed in order to prevent lateral displacement of a slat. The end fitting method is to prevent the slat from laterally slipping by covering the connecting portion of the upper and lower adjacent slats with the side shift regulating piece of the end fitting provided at the end of the slat, but the slat provided with the end fitting is provided. When suspending, the slats can be inserted from the length direction by bending the side-slip restricting piece of the end piece to the side-slip restriction releasing position. The slats are prevented from lateral displacement by bending the restricting pieces back to the original lateral displacement regulating posture (Patent Document 1).

Since heavy shutters are used to open and close large openings, the dimensions and weight of the slats are large, and a large force acts on the slat end fittings. A considerable force is required to bend the side displacement regulating piece of the end piece. Conventionally, the bending operation of the lateral displacement restricting piece has been performed using the long tool 7 as shown in FIG. 14 and utilizing the principle of leverage. The tool 7 includes a head 70 and a shaft 71, and the head 70 has a groove 72.

Since the end fitting 2 regulates lateral displacement of two vertically adjacent slats 1, the end fitting 2 is provided at an end of every other slat 1 in a plurality of slats 1 forming a shutter curtain. In the heavy shutter, an end fitting integrated with a wind resistant hook is often used. However, when the end fitting type is adopted, a wind resistant hook is attached to an end of the slat 1 adjacent to the slat 1 provided with the end fitting 2. 3 is often attached. In this case, since the wind-resistant hook 3 at the end of the adjacent slat 1 is located near the upper lateral displacement restricting piece 21 of the end fitting 2, the movable (rotational) range of the tool 7 is limited. It has been difficult to perform a bending operation by rotating the. In addition, since a large force acts on the tool 7 during bending, the head 70 is formed firmly and thick, and the outer shape becomes large, so that the upper end of the upper lateral displacement regulating piece 21 of the end fitting 2 and the windproof hook It may be difficult even to insert the head 70 into the gap G (see FIG. 2) between the lower ends of 3.
6-35117

  The present invention provides an end of a slat that enables easy bending of a lateral displacement regulating piece of an end piece of a slat, even when a wind-resistant hook is provided on a slat adjacent to the slat having the end piece. It is an object of the present invention to provide a metal bending device and a bending method.

The technical means adopted by the present invention to solve such a problem are as follows:
A bending device for a lateral displacement regulating piece of a metal end piece that regulates lateral displacement of a slat adjacent vertically above and below a shutter curtain formed by pivotally connecting a plurality of slats,
A head provided with a groove that can be fitted to the lateral displacement regulating piece,
A first shaft portion extending along a first axis integrally with the head;
A second shaft connected to the first shaft and extending along a second axis orthogonal to the first axis;
The first shaft coincides with the depth direction of the groove, and the first shaft is rotated by turning the second shaft around a connecting portion between the second shaft and the first shaft. And the head is configured to rotate about a first axis.

In one aspect, the end fitting is provided with a hook portion protruding from the slat end edge than the lateral displacement regulating piece, and the first shaft is mounted in a state where the groove portion is fitted to the lateral displacement regulating piece. The portion has a length dimension extending beyond the hook portion,
A connecting portion between the second shaft portion and the first shaft portion is located at a position beyond the hook portion.
In one aspect, the length of the second shaft is longer than the length of the first shaft.

In one aspect, the first shaft portion and the second shaft portion are separate bodies,
A fitting recess is formed in the head of the second shaft portion so as to fit around the first shaft portion in a state where rotation about the first shaft is restricted.
In one aspect, the first shaft portion has a polygonal shape (for example, hexagonal shape) in cross section.
In one aspect, the first element of the bending device for the lateral displacement regulating piece of the end fitting includes a head having a groove that can be fitted to the lateral displacement regulating piece, and extends along the first axis integrally with the head. A first shaft portion, wherein the first shaft coincides with a depth direction of the groove portion, and the first shaft portion has a polygonal shape (for example, hexagonal shape) in cross section.
In one aspect, the first shaft portion and the second shaft portion are integrally formed.

The method of bending the lateral displacement regulating piece of the slat end piece adopted by the present invention is as follows.
The lateral displacement restricting piece regulates lateral displacement of the slat when in the first posture, and releases the lateral displacement regulation of the slat when in the second posture,
The lateral displacement regulating piece of the suspended metal fitting at the end of the slat is in the second position,
The groove of the bending device is externally fitted to the lateral displacement restricting piece from the slat length direction. At this time, the first shaft portion extends in the slat length direction, and the second shaft portion has a slat length. Extending in a direction perpendicular to the direction,
By rotating the second shaft portion, the first shaft portion and the head are rotated around the first axis, and the lateral displacement regulating piece in the second posture is bent to the first posture. It is.

  In one aspect, a wind-resistant hook is provided at an end of an adjacent slat whose lateral displacement is regulated by the lateral displacement regulating piece bent from the second posture to the first posture.

  The bending device for a slat end piece according to the present invention includes a head having a groove that can be externally fitted to the lateral displacement restricting piece, a first shaft extending integrally with the head along a first axis; A second shaft portion connected to a shaft portion and extending along a second axis orthogonal to the first axis, wherein the first shaft coincides with a depth direction of the groove portion, and the second shaft portion The first shaft portion and the head are configured to rotate around a first axis by rotation about a connecting portion between the second shaft portion and the first shaft portion, and a slat length From the direction, it is possible to bend the lateral displacement restricting piece without externally fitting the lateral displacement restricting piece without limiting the movable range of the bending device, and the slat adjacent to the slat provided with the end fitting is provided with a windproof hook. Even if it is, the bending of the lateral displacement restricting piece of the end piece of the slat can be easily performed.

  In the bending device for a slat end fitting, the first shaft portion and the second shaft portion are formed separately, and the length of the first shaft portion exceeds the hook portion when the outer shaft is fitted to the lateral displacement regulating piece. The first shaft portion can be designed to be compact, as long as the fitting concave portion of the second shaft portion can be fitted at the position where the second shaft portion is fitted, and compared with a conventional long tool, Good handling. Also, an existing tool (for example, a spanner) can be used as the second shaft portion.

It is a partially omitted partial front view of the shutter curtain of a heavy shutter. It is the elements on larger scale of FIG. FIG. 3 is a side view of FIG. 2. It is a figure showing an end fitting. It is a front view explaining suspension of a slat. It is a side view explaining suspension of a slat. It is a figure showing the 1st element of the bending device of the slat end piece concerning a 1st embodiment. It is a front view explaining bending using the bending device of the slat end piece concerning a 1st embodiment. It is the elements on larger scale of FIG. It is a side view explaining bending using the bending device of the slat end piece concerning a 1st embodiment. It is a figure showing the bending device of the slat end piece concerning a 2nd embodiment of the present invention. It is a front view explaining bending using the bending device of the slat end hardware concerning a 2nd embodiment. The left figure is a partially enlarged view of FIG. 12, and the right figure is a side view for explaining bending using the bending device for the slat end piece according to the second embodiment. It is a figure explaining bending of the side displacement control piece of the conventional slat end piece.

As shown in FIG. 1, the shutter curtain S is formed by vertically connecting long slats 1 in a suspended state. The slat 1 includes a plate-shaped (in the illustrated embodiment, a corrugated plate, but not limited thereto) main body 10, a curved upper connecting portion 11 extending in the slat length direction above the main body 10, It has a curved lower connecting portion 12 extending in the slat length direction on the lower side, and the upper connecting portion of the lower slat 1 to the lower connecting portion 12 of the upper slat 1 of two vertically adjacent slats 1. The shutter curtain S is formed by connecting the parts 11 (so-called interlock connection). The slats 1 vertically adjacent to each other are connected in a state where a certain degree of rotation is allowed, and when the shutter curtain S is wound around a winding shaft (not shown) provided above the opening, the slats 1 are vertically adjacent to each other. The two slats are in a bent posture in a side view.

At the longitudinal end of the slat 1 of the shutter curtain S, end fittings 2 are attached every other sheet. As shown in FIG. 4, the end fitting 2 is fixed to a longitudinal end of the main body 10 of the slat 1 (typically, welded), and a width direction of the base 20 (fixed to the slat 1). In the state in which the slat 1 is in the longitudinal direction, the upper lateral displacement restricting piece 21 extending upward and the lower lateral displacement extending downward adjacent to the outside of the longitudinal end 13 of the slat 1 on the distal end side of the slat 1 It has a restriction piece 22 and a hook part 23 which is located slightly outside the end 13 in the longitudinal direction of the slat 1, and which rises from the front end in the width direction of the base 20 to the base 20. ing.

As shown in FIG. 3, the upper lateral displacement restricting piece 21 of the end piece 2 includes the upper connecting portion 11 of the slat 1 provided with the end piece 2 and the lower connecting portion 12 of the slat 1 adjacent to the upper side of the slat 1. Both of the connecting portions are closely opposed from the outside from outside, and the lower lateral displacement regulating piece 22 of the end fitting 2 is adjacent to the lower connecting portion 12 of the slat 1 on which the end fitting 2 is provided and below the slat 1. Both sides of the upper connecting portion 11 of the slat 1 are opposed to each other from the outside, and restrict the lateral displacement between the slat 1 provided with the end fitting 2 and the slat 1 vertically adjacent to the slat 1. ing.

A wind-resistant hook 3 is provided at the longitudinal end of the slat 1 to which the end fitting 2 is not attached. That is, the windproof hooks 3 are attached to every other end of the shutter curtain S at the longitudinal end of the slat 1. The windproof hook 3 is located at a distance from the base 30 fixed (typically welded) to the longitudinal end of the main body 10 of the slat 1 and slightly outside the longitudinal end 13 of the slat 1. And a hook portion 31 that rises from the front end of the base 30 in the width direction with respect to the base 30. As shown in FIGS. 2, 9, and 13, a space between the lower end of the hook portion 31 of the windproof hook 3 and the upper end of the upper lateral displacement regulating piece 21 of the end fitting 2 is a narrow gap G. The hook 23 of the end fitting 2 and the hook 31 of the windproof hook 3 are subjected to a large surface pressure on the shutter curtain S when both ends in the width direction of the shutter curtain S are received in the guide rails (not shown). In this case, it is locked to the locked portion in the guide rail so as to oppose the surface pressure.

The slat 1 is connected by sliding the other slat lower connecting portion 12 (upper connecting portion 11) into the upper connecting portion 11 (lower connecting portion 12) of one slat 1 by sliding the slat 1 from the longitudinal direction of the slat. I do. In the present embodiment, a slat pair P formed by connecting two slats 1 is prepared and carried into the site at a factory, and a shutter curtain S is formed by connecting a plurality of slat pairs P at the site.

The slat pair P is composed of an upper slat 1 with end fittings and a lower slat 1 with a windproof hook. The slat pair P is prepared, for example, in a factory, a slat 1 with a metal end fitting to which a metal end fitting 2 is welded only at one end in a length direction, and a slat 1 with a wind resistance hook to which a wind resistance hook 3 is welded to both ends in a length direction. The upper connecting portion 11 of the slat 1 with the windproof hook is slid from the longitudinal direction of the slat 1 into the lower connecting portion 12 of the slat 1 with the end fitting, and the end fitting 2 is welded to the other end of the slat 1 with the end fitting. Produced in

In the illustrated embodiment, a slat pair P composed of two slats 1 is manufactured at a factory. However, three or more slat sets are manufactured at a factory, and three or more slat sets are connected at a site. A shutter curtain may be formed. Further, in the slat pair P, the connection between the slat 1 with the end fitting and the slat 1 with the wind-resistant hook may be reversed (the slat 1 with the wind-resistant hook on the upper side and the slat 1 with the end fitting on the lower side).

When the slat pair P is hung at the site, the lower connecting portion 12 of the slat 1 with the wind-resistant hook on the lower side of the slat 1 already suspended from the winding shaft (not shown). ), The upper end of the slat pair P to be suspended (the upper connecting portion 11 of the slat 1 with the end fitting above the slat pair P) is slid from the slat length direction and inserted (see FIGS. 5 and 6). ), Before the slat pair P is inserted, the upper side displacement regulating piece 21 of the end fitting 2 on one side in the length direction of the slat 1 is bent to be in the lateral displacement regulation releasing posture, so that the slat pair P can be suspended. I have. FIG. 6 shows the upper lateral displacement regulating piece 21 ′ in the lateral displacement regulation releasing posture. The upper lateral displacement restricting piece 21 ′ is located at a position separated from the upper connecting part 11 of the slat 1 provided with the end fitting 2 in a side view, and the upper connecting part with respect to the lower connecting part 12 of the slat 1 adjacent on the upper side. 11 can be connected from the slat length direction.

After the slat pair P is completely slid and suspended at the lower end of the slat 1 suspended from a winding shaft (not shown), the upper lateral displacement regulating piece 21 ′ in the lateral displacement regulation releasing posture is bent back, and It is assumed that the sideways displacement is restricted. The bending-back operation of the upper lateral displacement restricting piece 21 'in the lateral displacement restriction releasing posture is performed in a state where the slat 1 is suspended. The slat 1 of the heavy shutter has a considerable weight, and the suspended slat 1 can be bent in a suspended state because a stable vertical posture can be obtained by applying its own weight in the vertical direction. . In addition, when forming the slat pair P from the upper slat 1 with the wind resistant hook and the lower slat 1 with the metal fitting, the bending operation of the lower lateral displacement regulating piece 22 instead of the upper lateral displacement regulating piece 21 is performed. Become.

The bending device for a slat end piece according to the present embodiment is mainly used to bend the upper lateral displacement restricting piece 21 ′ in the lateral displacement restriction releasing posture to the lateral displacement regulating posture. Of course, it can be used for the bending operation of the upper lateral displacement restricting piece 21 in the lateral deviation restricting posture to the lateral deviation restricting releasing posture and the bending operation of the lower lateral deviation restricting piece 22 (when necessary). FIGS. 7 to 10 show a first embodiment of a bending device for a slat end piece, and FIGS. 11 to 13 show a second embodiment of a bending device for a slat end piece.

The bending device for a slat end piece according to the first embodiment includes a first element 4 and a second element 5. As shown in FIG. 7, the first element 4 includes a head portion 40 and a shaft portion 41, and the head portion 40 has a groove portion 42 that can be externally fitted to the upper lateral displacement regulating piece 21. As shown in FIG. 10, the second element 5 includes a head 50 and a shaft 51, and the head 50 is fitted to the shaft 41 of the first element 4 in a state of restricting rotation. A recess 52 is provided. In a state where the first element 4 and the second element 5 are connected, the shaft 41 of the first element 4 extends along the first axis X, and the shaft 51 of the second element 5 It extends along a second axis Y orthogonal to X. The length direction (that is, the first axis X) of the shaft portion 41 of the first element 4 matches the depth direction of the groove portion 42. The length of the shaft 51 of the second element 5 is longer than the length of the shaft 41 of the first element 4.

The groove portion 42 of the first element 4 has a groove width that is fitted so as to sandwich the upper lateral displacement regulating piece 21. That is, the groove width of the groove portion 42 has a dimension slightly larger than the thickness of the upper lateral displacement regulating piece 21. The head portion 40 (the portion facing the groove portion 42) is formed thick so as to withstand the force acting on the bending. The shaft 41 of the first element 4 is hexagonal in cross section, and the peripheral surface of the shaft 41 forms a fitted portion. A spanner can be used as the second element 5. In addition, the fitting concave portion 52 of the second element 5 can be externally fitted to the shaft portion 41 of the first element 4 in a state where the rotation about the first axis X is restricted, and the rotating power of the second element 5 is reduced. The cross-sectional shape of the shaft portion 41 and the shape of the fitting recess 52 are not limited as long as the shaft portion 41 and the head 40 can be rotated around the first axis X by transmitting the shaft portion 41 to the shaft portion 41. In addition, in this specification, a shaft part means an element extending along a certain axis, and the shaft part is not limited to a rod-shaped element or a columnar element, for example, an element such as a flat bar. The shape (particularly, the cross-sectional shape) of the shaft portion is not limited.

The operation of returning the upper lateral displacement restricting piece 21 'in the lateral displacement restriction releasing posture to the lateral displacement regulating posture using the slat end fitting bending device according to the first embodiment will be described. Now, it is assumed that the upper lateral displacement restricting piece 21 ′ of the end fitting 2 at one end of the suspended slat 1 is in the lateral displacement restriction releasing posture (see FIG. 6). As shown in FIGS. 8 and 9, the groove 42 of the first element 4 of the bending device is fitted to the upper lateral displacement regulating piece 21 ′ from the slat length direction (the direction of the arrow in FIG. 9). At this time, the first axis X of the shaft portion 41 of the first element 4 extends in the slat length direction.

The shaft portion 41 of the first element 4 extends beyond the hook portion 23 of the end fitting 2 and the hook portion 31 of the windproof hook 3 so as to be separated from the end portion 13 of the slat 1. In the shaft portion 41 of the first element 4, the fitting concave portion 52 of the second element 5 rotates around the first axis X at a position beyond the hook portion 23 of the end piece 2 and the hook portion 31 of the windproof hook 3. It is fitted in a restricted state, and the second axis Y of the shaft portion 51 of the second element 5 extends in a direction perpendicular to the slat length direction (first axis X).

By rotating the shaft portion 51 of the second element 5 about the fitting portion with the first element 4 as a fulcrum, the shaft portion 41 and the head 40 of the first element 4 are rotated around the first axis X. Then, the upper lateral displacement restricting piece 21 'in the lateral displacement restricting release posture is bent back to be the upper lateral displacement restricting piece 21 in the lateral displacement restricting posture (see FIG. 10). At this time, since there is no obstacle in the rotation range of the second element 5, the workability of bending back the upper lateral displacement restricting piece 21 'is good.

As shown in FIG. 11, the bending device 6 for a slat end piece according to the second embodiment extends along the first axis X integrally with a head having a groove 62 that can be externally fitted to the upper lateral displacement regulating piece 21. A first shaft portion; and a second shaft portion that is integral with the first shaft portion and extends along a second axis that is orthogonal to the first axis. The first shaft portion 60 including the head is rotated by the rotation of the second shaft portion 61 about the connecting portion between the second shaft portion 61 and the first shaft portion 60 as a fulcrum. It is configured to rotate around. In the illustrated embodiment, the first shaft portion 60 is provided at both ends in the length direction of the second shaft portion 61, and two heads having the groove portions 62 are provided. For example, by making the widths of the groove portions 62 of the respective heads different, it is possible to perform the bending operation of the lateral displacement restricting pieces having different thicknesses with one bending device 6. Further, the direction in which the groove 62 of each head extends (the angle with respect to the second axis Y) may be different. In the illustrated embodiment, both groove portions 62 extend at 90 degrees with respect to the second axis Y. However, for example, one groove portion 62 may extend obliquely with respect to the second axis Y. This makes it possible to select the posture of the second shaft portion 61 to which a force is more easily applied when the groove portion 62 is externally fitted to the upper lateral displacement regulating piece 21 ′. Similarly, the head 40 may be integrally formed at both ends in the longitudinal direction of the shaft portion 41 of the first element 4 of the first embodiment.

An operation of returning the upper lateral displacement restricting piece 21 'in the lateral displacement restriction releasing posture to the lateral displacement regulating posture using the slat end fitting bending device 6 according to the second embodiment will be described. Now, it is assumed that the upper lateral displacement restricting piece 21 ′ of the end fitting 2 at one end of the suspended slat 1 is in the lateral displacement restriction releasing posture (see FIG. 6). As shown in the left views of FIGS. 12 and 13, the groove 62 of the bending device 6 is externally fitted to the upper lateral displacement regulating piece 21 ′ in the slat length direction (the arrow direction in the left view of FIG. 13). At this time, the first axis X of the first shaft portion 60 extends in the slat length direction, and the second axis Y of the second shaft portion extends in a direction orthogonal to the slat length direction.

The first shaft portion 60 of the bending device 6 extends beyond the hook portion 23 of the end fitting 2 and the hook portion 31 of the windproof hook 3 so as to be separated from the end portion 13 of the slat 1. In a region beyond the hook portion 23 of the end fitting 2 and the hook portion 31 of the windproof hook 3, the second shaft portion 61 extends in a direction orthogonal to the slat length direction (first axis X). By rotating the two-axis part 61 about the connection part with the first axis part 60 as a fulcrum, the first axis part 60 including the head is rotated about the first axis X, and the upper side of the lateral displacement regulation release posture The lateral displacement restricting piece 21 ′ is bent back to form the upper lateral displacement restricting piece 21 in the lateral displacement restricting posture (FIG. 13 right diagram). At this time, since there is no obstacle in the rotation range of the second shaft portion 61, the workability of bending back the upper lateral displacement regulating piece 21 'is good.

REFERENCE SIGNS LIST 1 slat 2 end piece 21 upper lateral displacement regulating piece 21 ′ upper lateral displacement regulating piece 22 in lateral displacement regulation releasing posture lower side lateral displacement regulating piece 3 windproof hook 4 first element 40 of bending device for slat end fitting Second element 50 of slat end fitting bending device Head 51 Shaft portion 52 Fitting recess 6 Slat end fitting bending device 60 First shaft portion 61 Second shaft portion 62 Groove portion X First axis Y Second axis

Claims (5)

A bending device for a lateral displacement regulating piece of a metal end piece that regulates lateral displacement of a slat adjacent vertically above and below a shutter curtain formed by pivotally connecting a plurality of slats,
A head provided with a groove that can be fitted to the lateral displacement regulating piece,
A first shaft portion extending along a first axis integrally with the head;
A second shaft connected to the first shaft and extending along a second axis orthogonal to the first axis;
The first shaft coincides with the depth direction of the groove, and the first shaft is rotated by turning the second shaft around a connecting portion between the second shaft and the first shaft. And the head is configured to rotate about a first axis,
Bending device for the lateral displacement regulating piece of the slat end piece. The end fitting is provided with a hook portion protruding from the slat edge with respect to the lateral displacement regulating piece, and the first shaft portion is connected to the hook portion with the groove portion fitted to the lateral displacement regulating piece. Has a length dimension extending beyond
A connecting portion between the second shaft portion and the first shaft portion is located at a portion beyond the hook portion;
The bending device for a lateral displacement regulating piece of a slat end piece according to claim 1. The first shaft portion and the second shaft portion are separate bodies,
A fitting recess is formed in the head of the second shaft portion so as to fit outside the first shaft portion in a state where rotation about the first shaft is restricted.
The bending device for a lateral displacement regulating piece of a slat end piece according to claim 1. A method of bending a lateral displacement regulating piece of a slat end piece using the bending device according to claim 1,
The lateral displacement restricting piece regulates lateral displacement of the slat when in the first posture, and releases the lateral displacement regulation of the slat when in the second posture,
The lateral displacement regulating piece of the suspended metal fitting at the end of the slat is in the second position,
The groove of the bending device is externally fitted to the lateral displacement restricting piece from the slat length direction. At this time, the first shaft portion extends in the slat length direction, and the second shaft portion has a slat length. Extending in a direction perpendicular to the direction,
By rotating the second shaft portion, the first shaft portion and the head are rotated around the first axis, and the lateral displacement regulating piece in the second posture is bent to the first posture.
The method of bending the side displacement regulating piece of the slat end piece. A wind-resistant hook is provided at an end of an adjacent slat whose lateral displacement is regulated by the lateral displacement regulating piece bent from the second posture to the first posture.
The bending method of the lateral displacement regulating piece of the slat end piece according to claim 4.

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