JP2024084331A - Shutter locking device - Google Patents

Abstract

[Problem] To provide a shutter locking device that can improve the convenience of lock replacement. [Solution] Holes 51 are provided in the slat 50 at positions corresponding to the four bolts 13 of the front cover 10. Also, protruding holes 52 are provided in the slat 50 for protruding the gripping portion 31 of the slide fitting 30. That is, the locking device 1 is attached to the slat 50 by performing a simple process. The connecting hole 37 of the slide fitting 30 constituting the locking device 1 is connected to an existing link bar. When the locking device 1 is attached to the slat 50, the hole 32 provided in the gripping portion 31 protrudes beyond the front cover 10. When the locking device 1 is attached to the slat 50, the positions of the pair of holes 32 are aligned, so that the latch 61 of the lock 60 can be inserted through the pair of holes 32. Here, a general-purpose lock consisting of the lock 60 and a key can be used, improving the convenience of lock replacement. [Selected Figure] Figure 9

Description

The present invention relates to slat-type shutters, and in particular to shutter locking devices.

Conventionally, a slat-type shutter having a shutter curtain made of multiple long metal plates called slats connected together has been known as an opening/closing device for the opening of the entrance/exit of a store or a storehouse. FIG. 12 is a lower front view of a slat-type shutter seen from the back side. FIG. 13 is an enlarged view of the part indicated by the arrow A in FIG. 12. As shown in FIGS. 12 and 13, a slat-type shutter 100 is provided with a shutter curtain 103 that moves up and down guided by guide rails 102 erected on both sides of the opening 101. A locking device 104 is provided at a predetermined position of the shutter curtain 103 to restrict the up and down movement of the shutter curtain 103 and lock it from the viewpoint of theft prevention, etc. The locking device 104 is connected to a pair of link bars 105, and the pair of link bars 105 move left and right when locking or unlocking. A locking portion 106 is formed at the tip of the pair of link bars 105, and this locking portion 106 locks with a locking portion 107 provided on the guide rail 102 to regulate the up and down movement of the shutter curtain 103.

In recent years, however, there are shutters available that allow the locking device 104 and other components to be easily attached and detached, thus improving the ease of maintenance of the locking device 104 and other components (see, for example, Patent Document 1).

Patent No. 5694742

However, while Patent Document 1 improves the maintainability of the locking device 104 and other parts, it is believed that the locking device 104 itself is maintained by someone with specialized shutter knowledge. For this reason, for example, in a rental warehouse or rental car garage, whenever a user changes, the cylinder lock 108 and key that constitute part of the locking device 104 must be replaced each time. In this case, since the user cannot replace them themselves, replacing the cylinder lock 108 and key takes a lot of time and effort.

Therefore, the present invention aims to provide a shutter locking device that can improve the convenience of changing locks.

A shutter locking device equipped with a shutter curtain that moves up and down guided by guide rails erected on both sides of a building opening, and a restricting means for restricting the up and down movement of the shutter curtain, has a mounting hole for attaching a lock, and is equipped with a connecting means for connecting to the restricting means.

In this configuration, the restricting means that restricts the up and down movement of the shutter curtain can be effectively utilized by connecting the restricting means to the connecting means, and by inserting, for example, a general-purpose lock hasp through the mounting hole, the shutter curtain can be locked in the fully closed state.

The present invention provides a shutter locking device that can improve the convenience of changing locks.

FIG. 1A is a front view of the front cover, FIG. 1B is a plan view of the front cover, and FIG. 1A is a front view of the storage case, FIG. 1B is a plan view of the storage case, and FIG. 1A is a front view of the sliding fitting, FIG. 1B is a plan view of the sliding fitting, FIG. 1C is a left side view of the sliding fitting, and FIG. (a) A front view showing the pair of sliding fittings when housed in the storage case and locked, (b) A plan view showing the pair of sliding fittings when housed in the storage case and locked, and (c) A rear view showing the pair of sliding fittings when housed in the storage case and locked. 1A is a front view showing the pair of sliding fittings housed in the storage case when the lock is unlocked, and FIG. 1A is a front view showing an unlocked state as seen from the front cover, and FIG. 1B is a front view showing a locked state as seen from the front cover. FIG. 11A to 11C are schematic perspective views showing a procedure for attaching the locking device to the slat. FIG. 13 is a front view showing the storage case attached to the back side of the slat. 13 is a perspective view showing the state in which a lock is attached to a hole formed in the grip portion. FIG. Lower front view of a slat shutter from the back. FIG. 13 is an enlarged view of a portion indicated by an arrow A in FIG. 12 .

1 is a perspective view of the locking device 1. As shown in FIG. 1, the locking device 1 is composed of a front cover 10, a storage case 20, a slide fitting 30, and the like. FIG. 2(a) is a front view of the front cover 10, FIG. 2(b) is a plan view of the front cover 10, and FIG. 2(c) is a right side view of the front cover 10. As shown in FIG. 2(a), the upper and lower ends of the front cover 10 are formed with bent portions 11, and the center portion is formed with a protruding hole 12 for protruding a part of the slide fitting 30. As shown in FIG. 2(b) and (c), bolts 13 are erected at approximately four corners on the back side of the front cover 10. Since the bolts 13 are erected by welding on the back side of the front cover 10, the heads of the bolts 13 do not appear on the front side of the front cover 10. Therefore, even if the front cover 10 constituting the locking device 1 is attached to the slats constituting the shutter curtain, the aesthetics of the shutter curtain itself is not marred.

Figure 3(a) is a front view of the storage case 20, Figure 3(b) is a plan view of the storage case 20, and Figure 3(c) is a right side view of the storage case 20. As shown in Figure 3(a), the storage case 20 is formed in a substantially rectangular shape, and flanges 21 are formed at both ends in the longitudinal direction. Holes 22 are formed in both flanges 21. In addition, bolts 23 are erected at two locations, approximately at the upper left and approximately at the lower right of the storage case 20. The bolts 23 are erected by welding to the inside of the storage case 20, so the heads of the bolts 23 do not appear on the surface of the storage case 20.

It is also possible to drill holes in advance at the positions where the bolts 23 are to be attached, and then install the bolts 23 in the holes. This configuration makes it easy to position the bolts 23 relative to the storage case 20, which improves productivity when mass-producing the storage cases 20.

Figure 4(a) is a front view of the sliding fitting 30, Figure 4(b) is a plan view of the sliding fitting 30, Figure 4(c) is a left side view of the sliding fitting 30, and Figure 4(d) is a right side view of the sliding fitting 30. As shown in Figure 4, a gripping portion 31 is formed protruding from the sliding fitting 30 for moving the sliding fitting 30 left and right when locking and unlocking. A hole 32 is formed through the gripping portion 31. A bolt 33 is erected approximately in the center of the sliding fitting 30. As mentioned above, a positioning hole may also be formed through the bolt 33.

As shown in FIG. 4(b), the sliding fitting 30 is formed with a restricting portion 34 that abuts against the inner wall of the storage case 20 when locked and restricts the movement of the sliding fitting 30. As shown in FIGS. 4(a) and (b), the sliding fitting 30 is bent upward to form a bent portion 35. A connecting portion 36 is formed at the end of the sliding fitting 30, and a connecting hole 37 is provided in the connecting portion 36. When a pair of sliding fittings 30 are stored in the storage case 20, the bent portion 35 abuts against the outer wall of the storage case 20 when unlocked, restricting the movement of the sliding fitting 30.

5(a) is a front view showing the pair of slide fittings 30 housed in the storage case 20 when locked, FIG. 5(b) is a plan view showing the pair of slide fittings 30 housed in the storage case 20 when locked, and FIG. 5(c) is a rear view showing the pair of slide fittings 30 housed in the storage case 20 when locked. As shown in FIG. 5, a torsion spring 40 is interposed between the bolt 23 erected on the storage case 20 and the bolt 33 erected on the slide fitting 30. The torsion spring 40 is attached to the bolt 33 with a nut 41. Therefore, when locked, the restricting portion 34 of the slide fitting 30 abuts against the inner wall of the storage case 20 due to the biasing force of the torsion spring 40, and the movement of the slide fitting 30 is restricted. At this time, the positions of a pair of holes 32 provided through the gripping portion 31 of the pair of slide fittings 30 are aligned.

Figure 6(a) is a front view showing the pair of sliding fittings 30 housed in the storage case 20 when unlocked, and Figure 6(b) is a plan view showing the pair of sliding fittings 30 housed in the storage case 20 when unlocked. As shown in Figure 6, when unlocking, the bending portion 35 comes into contact with the outer wall of the storage case 20 due to the biasing force of the torsion spring 40, restricting the movement of the sliding fitting 30. At this time, the positions of the pair of holes 32 formed through the gripping portion 31 of the pair of sliding fittings 30 are misaligned and do not match.

Figure 7(a) is a front view showing the unlocked state as seen from the front cover 10, and Figure 7(b) is a front view showing the locked state as seen from the front cover 10. As shown in Figure 7(a), when unlocking, the gripping portions 31 of the pair of sliding fittings 30 move to the left and right positions, respectively, and as shown in Figure 7(b), when locking, the gripping portions 31 of the pair of sliding fittings 30 are positioned in the center. At this time, the positions of a pair of holes 32 formed through the gripping portions 31 of the pair of sliding fittings 30 are aligned.

Figure 8 is a front view showing the drilling process of the slat 50. As shown in Figure 8, holes 51 are drilled into the slat 50 at positions corresponding to the four bolts 13 of the front cover 10. In addition, a protruding hole 52 is drilled into the slat 50 to allow the gripping portion 31 of the slide fitting 30 to protrude. By drilling the slat 50 in this way to drill the four holes 51 and one protruding hole 52, the locking device 1 can be attached to the slat 50.

Figure 9 is a schematic perspective view showing the procedure for attaching the locking device 1 to the slat 50. As shown in Figure 9, first, the sliding fitting 30 is attached to the storage case 20. At this time, the gripping portion 31 of the sliding fitting 30 is placed in the locked state, in other words, the positions of the pair of holes 32 formed through the gripping portion 31 are aligned.

Next, the four bolts 13 of the front cover 10 are inserted through the four holes 51 formed in the slat 50. With the slide fitting 30 attached to the storage case 20, the four holes 22 of the storage case 20 are aligned with the four holes 51 formed in the slat 50 from the back side of the slat 50, and the four bolts 13 of the front cover 10 are inserted through the four holes 22 of the storage case 20. Then, the four nuts 41 are screwed onto the corresponding four bolts 13 from the back side of the slat 50, and the locking device 1 is attached to the slat 50. Next, the connecting holes 37 of the connecting portion 36 formed in the slide fitting 30 are connected to a pair of link bars (not shown: see link bars 105 in Figures 10 and 12).

When the locking device 1 is attached to the slat 50 in this manner, the storage case 20 is recessed in the recess of the slat 50, so the storage case 20 does not get in the way of rolling up the shutter curtain. In addition, the thickness of the front cover 10 is only about 1 mm. Therefore, even when the locking device 1 is attached to the slat 50, the shutter curtain can be easily rolled up.

Figure 10 is a front view showing the state in which the storage case 20 is attached to the back side of the slat 50. As shown in Figure 10, when the storage case 20 is attached to the back side of the slat 50 with the sliding fitting 30 housed in the storage case 20, the storage case 20 is recessed into the recess of the slat 50. A pair of link bars 105 are connected to the connecting hole 37 of the sliding fitting 30. Here, a locking portion is formed at the tip of the pair of link bars 105. When the locking device 1 is locked, the locking portion locks with a locked portion provided on the guide rail, restricting the up and down movement of the shutter curtain, and the shutter curtain is fully closed.

Figure 11 is a perspective view showing the state in which the lock 60 is attached to the hole 32 provided through the grip portion 31. As shown in Figure 11, when locked, the positions of the pair of holes 32 provided through the grip portions 31 of the pair of slide fittings 30 are aligned, so that the shutter curtain can be kept fully closed by inserting the latch 61 of the lock 60 through the pair of holes 32 and then locking the lock 60. Here, a general-purpose product that is generally available can be used as the lock 60 that constitutes the lock. For this reason, if the locking device 1 is used for a shutter curtain in a rental warehouse or rental garage, for example, it is only necessary to replace the lock when the user changes. This improves the convenience of replacing the lock that constitutes the locking device 1.

As described above, according to this embodiment, the following actions and effects can be obtained.
(1) The locking device 1 is attached to the slat 50 by performing simple processing on the slat 50. The connecting hole 37 of the sliding fitting 30 constituting the locking device 1 is connected to an existing link bar (see FIG. 12). When the locking device 1 is attached to the slat 50, the hole 32 formed through the grip portion 31 protrudes beyond the front cover 10. When locked, the positions of the pair of holes 32 are aligned, so that the hasp 61 of the lock 60 can be inserted through the pair of holes 32. A general-purpose product can be used as the lock consisting of the lock 60 and a key, which improves the convenience of lock replacement.

(2) The torsion spring 40 is interposed between the storage case 20 and the slide fitting 30. Therefore, when unlocking, the bending portion 35 comes into contact with the outer wall of the storage case 20 due to the biasing force of the torsion spring 40, restricting the movement of the slide fitting 30. On the other hand, when locking, the restricting portion 34 of the slide fitting 30 comes into contact with the inner wall of the storage case 20 due to the biasing force of the torsion spring 40, restricting the movement of the slide fitting 30. At this time, the positions of a pair of holes 32 formed through the gripping portions 31 of the pair of slide fittings 30 are aligned. Therefore, the latch 61 of the lock 60 can be easily inserted into the pair of holes 32.

(3) When the locking device 1 is attached to the slat 50, the storage case 20 is recessed in the recess of the slat 50. In other words, most of the components of the locking device 1 are recessed in the recess of the slat 50. Therefore, the storage case 20 does not interfere with the winding of the shutter curtain. In addition, the thickness of the front cover 10 is only about 1 mm. Moreover, the gripping portion 31 protruding from the projection hole 12 of the front cover 10 is recessed in the recess of the slat 50 when the shutter curtain is wound up, so even if the gripping portion 31 protrudes from the front cover 10, it does not interfere with the winding of the shutter curtain. Therefore, even when the locking device 1 is attached to the slat 50, the shutter curtain can be easily wound up.

(4) In order to effectively utilize the structure for regulating the up and down movement of the shutter curtain, i.e., the regulating mechanism by the engagement between the locking portion of the existing link bar and the locked portion of the guide rail, a connecting hole 37 that connects to the link bar is provided through the slide fitting 30. On the other hand, the slat 50 only needs to have four holes 51 at positions corresponding to the four bolts 13 of the front cover 10 and a protruding hole 52 for protruding the gripping portion 31 of the slide fitting 30, and the processing steps for the slat 50 are also few. Moreover, a lock consisting of a general-purpose lock 60 and key can be used for locking. Therefore, the installation of the locking device 1 can be achieved simply and at low cost.

The above embodiment can be modified as follows.
The two locking points that regulate the up and down movement of the shutter curtain are the locked parts of the guide rails that stand on the left and right sides of the building opening, but there may be only one locking point, for example, only one of the locked parts of the guide rails that stand on the left and right sides. Also, the locking part may be provided on the floor surface and engaged with the locked part.
・The lock may be a combination lock.
The shutter curtain may be configured in such a manner that one or more panels, pipes, sheets, or net-like objects are arranged in the opening and closing direction, or in such a manner that slats, panels, pipes, sheets, net-like objects, etc. are appropriately combined.

1...locking device, 30...slide fitting constituting the connecting means, 31...gripping portion, 32...hole as mounting hole, 36...connecting portion constituting the connecting means, 37...connecting hole constituting the connecting means, 40...torsion spring as biasing means, 50...slat, 60...lock, 100...slat-type shutter, 101...opening, 102...guide rail, 103...shutter curtain, 105...link bar constituting the regulating means, 106...locking portion constituting the regulating means, 107...locked portion constituting the regulating means.

Claims (5)

A shutter curtain that moves up and down along guide rails installed on both sides of the building opening;
A shutter locking device having a regulating means for regulating the up and down movement of the shutter curtain,
A shutter locking device having a mounting hole for mounting a lock and also equipped with connecting means for connecting to the regulating means. In the shutter locking device according to claim 1,
The connecting means is a shutter locking device configured as a pair. In the shutter locking device according to claim 2,
A shutter locking device in which the positions of a pair of mounting holes formed through said connecting means coincide when the shutter is locked. In the shutter locking device according to claim 3,
A shutter locking device comprising a biasing means for biasing the connecting means to a predetermined position when the shutter is locked or unlocked. In the shutter locking device according to any one of claims 1 to 4,
Most of the locking devices are shutter locking devices that are recessed into the slats that make up the shutter curtain.

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