JP2005090104A - Crime preventive structure of shutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the upward movement and prizing of a seat plate. <P>SOLUTION: The seat plate 4 at the lower end of a shutter curtain 2 of a shutter device for opening/closing a building opening is provided with a hook lock device 6, and when the opening is totally closed, a turning locking piece 61 of the hook lock device 6 is locked to a locked part provided at a floor face. In one form, the locked part is formed on the upper face of a lower frame 5 provided at the floor face, and the lower frame 5 is covered with the seat plate 4 when the opening is totally closed. In the other form, the turning locking piece 61 of the hook lock device 6 is locked to the locked part provided at the floor face when the opening is totally closed, and the floor face is formed with a recessed part into which the seat plate 4 is received when the opening is totally closed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a security structure for a shutter, and more particularly to a security structure for a shutter that prevents the shutter from entering a room from a seat plate portion when the opening is fully closed.

Crimes have occurred in which the shutter is opened with a bar or the like to open the building opening and enter the room. One way to pry the shutter is to lift the seat plate upward using a bar or hydraulic jack, taking advantage of the fact that there is a gap between the seat plate and the floor. Prying is done.

An object of the present invention is to prevent upward movement of the seat plate and prying of the seat plate.

The technical means adopted by the present invention in order to achieve such a problem is that a sickle lock device is provided on the seat plate at the lower end of the shutter curtain of the shutter device that opens and closes the building opening, and when the opening is fully closed, the sickle lock device The rotation locking piece is configured to be locked to a locked portion provided on the floor surface, and the locked portion is formed on the upper surface of the lower frame provided on the floor surface. When fully closed, the lower frame is concealed by a seat plate. Since the seat plate is locked on the floor surface side by the sickle lock device, the upward movement of the seat plate is restricted. When the opening is fully closed, the lower frame on which the locked portion is provided is concealed by the seat plate, which makes it difficult to open the seat plate.

Another technical means adopted by the present invention is to provide a sickle lock device on a seat plate at a lower end of a shutter curtain of a shutter device that opens and closes a building opening, and when the opening is fully closed, It is configured so that the piece is locked to the locked portion provided on the floor surface, and a recess is formed in the floor surface, and the seat plate is received in the recess when the opening is fully closed. It is what. Since the seat plate is locked on the floor surface side by the sickle lock device, the upward movement of the seat plate is restricted. By forming a recess in the floor and receiving the seat plate in the recess when the opening is fully closed, it is difficult to pry the seat plate. The concave portion formed on the floor surface may be provided directly on the inside or upper surface of the floor surface, or may be formed on the upper surface of the lower frame embedded in the floor surface.

In a preferred embodiment, the locked portion to which the rotation locking piece is locked is a strike plate provided on the lower frame or the floor surface. In one preferable aspect, the sickle lock device has two rotation locking pieces, and the two rotation locking pieces are locked to the locked portion by rotating in different directions. In the case of providing two rotation locking pieces that rotate in different directions, the locking plate is locked to the locked portion from the opposite direction during locking, so that the seat plate is lengthened. It is possible to satisfactorily cope with prying by moving in the direction (left and right direction). In another preferred embodiment, the unlocking means on the indoor side of the sickle lock device is a rotary knob provided with a two-action mechanism or a cylinder lock.

According to the present invention, since the sickle lock device provided on the seat plate restricts the vertical movement of the seat plate when the opening is fully closed, it prevents the seat plate and the slats from being pryed upward by a bar or the like. .

When the opening is fully closed, the lower frame is concealed by the seat plate.When the opening is fully closed, the lower frame provided with the locked portion to be locked by the locking portion of the sickle lock device is hidden by the seat plate. This makes it difficult to open the seat plate.

A recess is formed on the floor surface. When the opening is fully closed, a seat plate can be received in the recess, making it difficult to insert a bar between the seat plate and the floor surface. Therefore, the upward movement of the seat plate is prevented.

FIGS. 1A and 1B are partial front views of the interior side of the shutter device when the opening is fully closed, and show the lower half of the shutter device. The shutter device includes left and right guide rails 1 erected on left and right ends of a building opening, a shutter case (not shown) provided above the building opening, and a shutter curtain 2 that opens and closes the building opening. Have. The shutter curtain 2 is configured by connecting a plurality of slats 3 vertically, and the upper end of the shutter curtain 2 is connected to a winding shaft (not shown) provided horizontally in the shutter case. When the building opening is opened, The shutter curtain 2 is wound around the winding shaft. When the opening of the building is closed, the shutter curtain 2 is drawn out from the winding shaft, descends while being guided by the left and right guide rails 1 at both ends of the slat 3, and a seat plate provided at the lowermost end of the shutter curtain 2 The building opening is fully closed by 4 landing on the floor.

A lower frame (pallet) 5 is embedded in a portion of the floor surface on which the seat plate 4 is landed. A sickle lock device 6 is mounted on the seat plate 4 with a gap in the length direction of the seat plate 4. In FIG. 1 (A), one sickle lock device is provided at the central portion in the length direction of the seat plate 4. In FIG. 1 (B), two sickle lock devices 6 are mounted at intervals in the length direction of the seat plate 4. The number of sickle lock devices 6 installed on one seat plate 4 is not limited to that shown in the figure. For example, three sickle lock devices may be provided on the seat plate.

The seat plate 4 has a reverse T-shape in a sectional view from a vertical portion 40 and a horizontal portion 41 provided at the lower end of the vertical portion 40. The upper end of the vertical portion 40 is connected to the lower end of the lowest slat 3 constituting the shutter curtain 2, and the horizontal portion 41 is located on the outdoor side and the half portion on the indoor side across the vertical portion 40. Will do. A contact piece 42 extending downward is formed at the end of the horizontal 41 on the outdoor side and the indoor side, and the seat plate 4 is configured to be landed via the contact piece 42.

The sickle lock device 6 includes a box-shaped main body 60, a rotation locking piece 61 provided to be rotatable with respect to the main body, and a rotation mechanism that is built in the main body 60 and rotates the rotation locking piece 61. (Not shown) and a thumb turn 62 and a cylinder lock (in a preferred example, a dimple cylinder having high crime prevention performance) for rotating the rotation locking piece 61 by being connected to a rotation mechanism. The rotation locking piece 61 can be rotated up and down within the plane defined by the shutter curtain 2, and the rotation locking piece 61 is in the state of being rotated upward (inclined posture). It is located inside and is configured to project downward from the lower surface of the seat plate 4 by rotating downward. A sickle-shaped hook portion 610 is formed at the distal end portion of the rotation locking piece 61. When the hook portion 610 of the rotation locking piece 61 is locked to the locked portion provided on the floor surface, the rotation locking piece 61 functions as a dead bolt.

An opening portion or a cutout portion is formed in the indoor horizontal portion 41 of the portion where the sickle lock device 6 is provided, and the rotation locking piece 61 extends downward from the lower end of the seat plate 4 through the opening portion. It is designed to rotate toward you. The main body 60 is mounted on the indoor side of the vertical portion 40 of the seat plate 4 via the mounting plate 7, and the rotation mechanism inside the main body 60 and the thumb turn 62 are positioned on the indoor side. The cylinder lock 63 faces the outdoor side surface portion of the vertical portion 40 of the seat plate 4, and the shutter curtain 2 can be opened by normally unlocking the sickle lock by a key operation.

The lower frame 5 is almost entirely embedded in the floor surface, and the upper surface 50 of the lower frame 5 is substantially flush with the floor surface. On the upper surface 50, a strike plate 8 constituting a locked portion of the rotation locking piece 61 is provided at a portion corresponding to the sickle lock device 6, and the rotation locking piece is formed in the receiving hole 9 of the strike plate 8. 61 rotates and engages, and the sickle-shaped hook part 610 is locked to the lower surface 80 of the plate 8 at the periphery of the receiving hole 9. In order to give strength to the strike plate 8, the strike plate 8 is formed by providing two plate members so as to sandwich the opening formed in the upper surface 50 from above and below.

The main body 60 has a rectangular shape extending in the horizontal direction when viewed from the front, and two rotation locking pieces 61 are rotatably provided at both ends in the length direction of the main body 60. The two rotation locking pieces 61 are locked and unlocked by rotating in different directions by one operation. That is, at the time of locking by operating the cylinder lock 63 or the thumb turn 62, one rotation locking piece 61 is rotated and locked clockwise, and the other rotation locking piece 61 is rotated counterclockwise. Each is locked to a locked portion provided on the floor and locked. As shown in FIG. 2 (B), in the locked state, the left and right rotation locking pieces 61 are in a vertically extending posture, and the strike plate 8 is fitted into the sickle-shaped hook portion 610 from the horizontal direction. The hook portions 610 of the left and right rotation locking pieces 61 are locked to receive the strike plate 8 from opposite directions. Therefore, when a force in the left-right direction (the length direction of the seat plate 4) acts on the seat plate 4, the two rotation locking pieces 61 can effectively cope with movement in either direction. .

In the illustrated example, a normal thumb turn is shown as an unlocking knob located on the indoor side. In the unlikely event that the seat plate 4 is lifted up a little and the possibility of attempts to unlock by pushing the hand into the indoor side through the gap between the seat plate 4 and the floor surface, the interior side unlocking means should be devised. Is advantageous. In one preferred example, a thumb turn having a two-action mechanism is employed. The two-action mechanism is a mechanism in which the rotation operation cannot be performed unless other actions are simultaneously performed during the rotation operation. A thumb turn having a two-action mechanism is shown in FIG. The thumb turn 62 has two protrusions 620 that can be moved in and out of the thumb turn 62 main body. When the protrusion 620 protrudes, the rotation operation by the thumb turn 62 is restricted. When the protrusion 620 is pinched with a finger so as to be immersed, the restriction of the rotation operation is released, and the rotation unlocking operation by the thumb turn 62 is enabled. The configuration of the two-action mechanism is not limited to the illustrated one. By adopting the two-action mechanism, unlocking from the indoor side can be made difficult. In another preferred example, the sickle lock device is provided with a double-sided cylinder lock, and is unlocked by key operation from the room side. With this device, even if a hand is inserted into the room, the sickle lock device cannot be unlocked without a key.

FIG. 3 is a view similar to FIG. 2C, and the description of the sickle lock device of FIG. 2C can be used as it is for the description of the sickle lock device of FIG. The relationship with 5 is different. The width dimension of the horizontal part 41 of the seat plate 4 (the dimension between the contact piece 42 on the indoor side and the contact piece 42 on the outdoor side) is larger than the width dimension of the upper surface 50 of the lower frame 5, and the entire opening part. When closed, the horizontal portion 41 of the seat plate 4 hides the lower frame 5 and the strike plate 8 provided on the upper surface 50 of the lower frame 5. Further, by increasing the width dimension of the seat plate 4, it is difficult to pry up with a bar or the like.

FIG. 4 shows still another embodiment characterized in the relationship between the seat plate 4 and the lower frame 5, and particularly in the configuration of the lower frame 5. A concave portion 500 is formed on the upper surface of the lower frame 5, and the seat plate 4 is placed on the concave portion 500. The concave portion 500 has a horizontal portion 501 that substantially constitutes a floor surface, and a wall 502 formed before and after the horizontal portion 501. The width direction dimension of the horizontal part 501 of the recess 500 is larger than the width dimension of the horizontal part 41 of the seat plate 4 (the dimension between the indoor side contact piece 42 and the outdoor contact piece 42). And the seat plate 4 can be accommodated in the recess 500. Furthermore, the rising dimension of the wall surface 501 before and after the recess 500 is slightly larger than the rising dimension of the horizontal portion 41 of the seat plate 4 (the size of the contact piece 42), and the horizontal portion 501 of the seat plate 4 and the recess 500 is It is difficult to infiltrate burs and the like during the period. In the horizontal portion 501 on the upper surface, a strike plate 8 is provided at a portion corresponding to the sickle lock device 6, and the rotation locking piece 61 is locked in the receiving hole 9 of the strike plate 8. The hook portion 610 of 61 is engaged with the back surface 80 of the peripheral plate of the receiving hole 9. In order to give strength to the strike plate 8, the strike plate 8 is formed by providing two plate members so as to sandwich the opening formed in the horizontal portion 501 from above and below.

FIG. 5 shows another embodiment that makes it difficult to pry from the seat plate portion. In FIG. 5A, a groove is formed in the surface on which the seat plate at the lower end of the shutter curtain of the shutter device is landed, and a seat plate receiving rail is embedded in the groove. The seat plate receiving rail has a cover plate that is pushed upward by an elastic member such as a spring so as to be substantially flush with the floor surface. When the seat plate is not in contact with the rail, the cover plate is The groove is covered, and problems such as dust entering the groove and tripping into the groove are eliminated. When the shutter curtain is lowered and the seat plate comes into contact with the cover plate, the cover plate is lowered into the groove together with the seat plate by the weight of the shutter curtain. FIG. 5 (B) shows that when a groove portion cannot be formed on the floor surface, an inclined seat plate receiving guide is installed on the floor surface, and it is difficult to pry through the gap between the seat plate and the floor surface. To. In the case of FIG. 5, since the ground contact surface between the seat plate and the floor surface is not visible, it is difficult to lift the seat plate with a bar, a hydraulic jack or the like. It can also be retrofitted, so it can also be installed at existing sites.

The present invention can be used as a security device for a shutter device.

It is the partial front view which looked at the shutter apparatus which concerns on this invention from the indoor side, (A) provided the sickle-lock apparatus in the center part of the length direction of a seat board, (B) WHEREIN: The length of a seat board The figure shows a case where two sickle lock devices are provided at intervals in the direction. It is a figure which shows the sickle-lock apparatus provided in the seat board, Comprising: (A) is a top view, (B) is a front view, (C) is a side view. Although it is a figure similar to FIG.2 (C), the thing by which the lower frame is concealed with the seat board is shown. FIGS. 2C and 3 are views similar to FIG. 3, but showing an embodiment characterized by a lower frame that receives a seat plate. It is a figure which shows the structure of the ground-contact surface of a seat board, (A) accommodates a seat board in the recessed part formed in the floor surface, (B) is a recessed part on a floor surface by the guide formed on the floor surface. It is formed to accommodate the seat plate. It is explanatory drawing of the thumb turn provided with the 2 action mechanism.

Explanation of symbols

2 Shutter curtain 3 Slat 4 Seat plate 40 Vertical portion 41 Horizontal portion 5 Lower frame 50 Lower frame upper surface 500 Recess 6 on sickle lock device 61 Rotating locking piece 610 Hook portion 8 Strike plate 9 Rotating locking piece Receiving hole

Claims (2)

A locked portion in which a sickle lock device is provided on the seat plate at the lower end of the shutter curtain of the shutter device that opens and closes the opening of the building, and when the opening is fully closed, the rotation locking piece of the sickle lock device is provided on the floor surface The locked portion is formed on the upper surface of the lower frame provided on the floor surface, and the lower frame is concealed by a seat plate when the opening is fully closed. The shutter security structure. A locked portion in which a sickle lock device is provided on the seat plate at the lower end of the shutter curtain of the shutter device that opens and closes the opening of the building, and when the opening is fully closed, the rotation locking piece of the sickle lock device is provided on the floor surface A security structure for a shutter, wherein a recess is formed on the floor surface, and a seat plate is received in the recess when the opening is fully closed.

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