JP4370921B2 - Security mechanism for opening and closing body - Google Patents

Description

The present invention relates to a crime prevention mechanism for an opening / closing body that opens and closes a building opening. In the present specification, the present invention will be described mainly based on a shutter device, but the opening / closing body in the present invention includes a door which is a door body for opening and closing an opening.

2. Description of the Related Art Conventionally, as a security measure for a shutter device such as a lightweight shutter, two locking devices, an intermediate lock and a seat plate lock, have been provided. In such a locking device, an operation unit for locking and unlocking the locking device is provided on an intermediate slat constituting the shutter curtain and a seat plate at the lower end of the shutter curtain. Examples of the operation unit include a keyhole located on the outdoor side and an operation knob located on the indoor side.

However, recently, there has been a crime of breaking the slats on the seat plate on which the operation unit of the locking device is provided, the slats on or below the intermediate slats, and unlocking. Increasing the plate thickness of the slats may counter the breaking, but increasing the plate thickness of the slats increases the weight of the slats and increases the overall weight of the shutter curtain.

In addition, as a locking mechanism with improved crime prevention, a double-sided cylinder type locking device has also appeared, and although it is effective for breaking slats, there is a problem of poor usability.

An object of the present invention is to further improve crime prevention performance in an opening / closing body provided with a locking device.

The crime prevention mechanism employed by the present invention in order to achieve such a problem is a shutter device provided with a locking mechanism, wherein the shutter curtain seat plate or slat is provided with an operating portion of the locking mechanism, and the interior of the shutter curtain The side plate is provided with a security plate so as to cover a region near the operation unit, and the security plate is positioned above the seat plate when the operation unit is provided on the seat plate. A portion that faces the interior side surface of the slat, and when the operation part is provided on the slat, the security plate member is located above the slat provided with the operation part, and / or A portion of the slat facing the indoor side surface portion of the slat located below the slat provided with the operation portion, and the portion of the security plate member is always in a vertical posture facing the indoor side surface portion of the slat; Thus, when an external force in a direction from the outdoor side toward the indoor side through the opening formed in the shutter curtain acts on the part of the security plate, the part of the security plate can escape from the external force with the operation unit side as a base end. It is configured to be bent or rotated . Area near the operating unit and, when the opening (punching and cutting-breaking) is formed on the shutter curtain in the region refers to a region such as the operation portion of the indoor side surface portion of the shutter curtain can be operated from the opening . The area near the operation part provided on the seat plate or the slat includes a part or all of the area around the operation part (upper and lower, left and right areas). Alternatively, and / or a region having a predetermined width of the surface portion of the slat immediately below is the vicinity region. The security plate that covers the vicinity area of the indoor side surface portion of the shutter curtain includes those that face the surface portion with a space therebetween, and those that are in close contact with the surface portion. The plate member includes a portion facing and spaced apart from the indoor side surface portion of the slat.

The security plate material applied to the locking device provided on the seat plate at the lower end of the shutter curtain includes a portion facing the indoor side surface portion of the slat located immediately above the seat plate. A security plate applied to a locking device provided in a slat at an intermediate portion of the shutter curtain includes a portion facing the indoor side surface portion of the slat located on the upper side and / or lower side of the intermediate slat. From the viewpoint of crime prevention performance, it is desirable to provide portions facing both surface portions of the slats positioned above and below the intermediate slat. A security plate is (by breaking off that area, the area that it is possible to unlock) near a region of at least the operation section need only be extended to cover the necessarily throughout the length direction of the slat It may not be provided. Moreover, you may provide the board material for a crime prevention in the left-right side of this operation part in the indoor side part of the slat or seat board in which the operation part is provided.

The part of the security plate is movable. Part of a security plate is constantly faces the indoor side surface portion of the slat in vertical position, the external force direction from the outdoor side to the indoor side acts on the portion of the plate member, the portion of the plate member, the operation With the section side as the base end, it bends, bends, or turns away from the interior side surface. By curving or turning portions of the plate material an operation portion side as the proximal end, can be part of the plate material is configured to bend or pivot so as to cover the said operating unit.

As a preferable aspect of the configuration of the movable security plate, there are two types in which the plate portion is bent or bent with the operation portion side as the base end, or the plate portion is rotated with the operation portion side as the base end. Can be mentioned. Examples of the former include those in which the plate material is made of a leaf spring material. In the latter example, an example in which the plate portion can be rotated by a hinge is illustrated, and the hinge may be a spring hinge. In addition, the plate material part always maintains a vertical posture by spring force (elastic deformation of the leaf spring material, spring hinge, etc.), and when an external force is applied, the plate material part resists the spring force from the slat surface part. curved or rotated so as to be separated, even when the external force is eliminated part of the plate intended to return to the original vertical position by the spring force, or curved or rotated so as to be separated from the slat surface by the action of an external force However, a curved state (plastic deformation) or a rotated state may be maintained.

In a preferred aspect, the portion of the security plate material is closer to the side away from the indoor side surface portion than the imaginary line passing between the upper and lower interlock portions of the slat provided with the indoor side surface portion opposed to the portion of the security plate material. and extending as a base end of the operation unit side located, extending end portion of the crime prevention plate is formed in the inclined portion extending toward the indoor side surface portion, the distal end of the inclined portion, said It is located on the interior side portion nearer phantom.

In another preferred embodiment, the plate member is sandwiched between the indoor side surface portion of the opening / closing body and the operation portion. In one preferred embodiment, the plate member has a main body portion (part of a security plate member) and a mounting portion, and the mounting portion is sandwiched between the indoor side surface portion and the operation portion. Preferably, the main body is movable with respect to the mounting portion.

Even when drilling a hole in the vicinity of the operating part of the shutter curtain locking device or when trying to break it with a hammer, it covers the specified area on the interior side of the shutter curtain. Since the security plate is provided, it is impossible to directly access the operation unit of the locking device.

Or a hole in a security plate using a drill or snips, even if an attempt or breaking off, the portion of a security plate is to rotate without bending to escape from the drill or snips, the security for the plate It is difficult to apply an effective force for drilling or severing, and it is difficult to make a hole in the security plate or to sever it. You can also plastically deform a security plate material by bending, even rotation state due to external force is maintained, since to not curved as part of a security plate is overlying the operating unit rotates, the shutter curtain is cut broken Even in such a case, access to the operation unit of the locking device is prevented.

It said portion of a security plate, the operation located on the side portion of the security for the sheet material is separated from the indoor side unit the imaginary line passing between interlocking portions of the upper and lower slats having an indoor side surface portion which faces It extends out the parts side as a base end, extending end portion of the crime prevention plate is formed in the inclined portion extending toward the indoor side surface portion, the distal end of the inclined portion, than the virtual line The one located near the indoor side surface portion is provided with a security plate on the indoor side surface portion of the shutter curtain, but the winding operation is hindered by the presence of the plate material when winding the shutter curtain. There is no such thing as coming.

FIG. 1 is a schematic front view of a shutter device provided with a locking device. A shutter curtain 1 is configured by connecting a plurality of slats 2 vertically, and a seat plate 3 is provided at the lowermost end of the shutter curtain. Is provided. Guide rails 4 are erected on the left and right ends of the building opening, and the building opening is opened and closed by moving the shutter curtain 1 up and down while guiding the width of the shutter curtain 1 to the guide rail 4.

An operation portion 5 of the locking device is provided on the surface portion of the intermediate slat 20 at the intermediate portion in the opening height direction and the lowermost seat plate 3. The operation unit 5 has a key hole 50 provided in the outdoor side surface portion and an operation knob 51 provided in the indoor side surface portion, and locks and unlocks by key operation or rotation of the knob. On the indoor side surface of the shutter curtain 1, a security plate 6 is provided in the vicinity of the operation unit 5. As a shutter locking device, a locking rod (not shown) projects from the longitudinal end of the intermediate slat 20 or the seat plate 3 by the operation of the operation unit 5, and is engaged with a locking part (not shown) provided in the guide rail. The thing which regulates the upward movement of a shutter curtain by stopping is illustrated. Alternatively, the upward movement of the shutter curtain 1 is restricted by the operation of the operation portion 5 provided on the seat plate 3 by the engagement of the engagement hook (not shown) to the engagement portion (not shown) formed on the lower surface of the opening. Good.

FIG. 2 is a partial front view of a lower end portion of the shutter curtain. FIG. 3 shows a first embodiment of the crime prevention mechanism according to the present invention, and is a longitudinal sectional view of a lower end portion of the shutter curtain. The seat plate 3 is a long material extending in the width direction of the building opening, and has a substantially inverted T shape in sectional view from the horizontal portion 30 and the vertical portion 31. An interlock portion 32 is formed at the upper end portion of the vertical portion 31 of the seat plate 3, and the seat plate 3 is interlocked with the interlock portion 21 at the lower end of the slat 2 immediately above it via the interlock portion 32. Has been. An operation portion 5 of the locking device is provided at an intermediate portion in the longitudinal direction of the vertical portion 31 of the seat plate 3. The operation unit 5 has an outdoor keyhole 50 and an indoor operation knob 51, and the operation unit 5 is mounted on the vertical portion 31 of the seat plate 3 via a screw (not shown) from the indoor side. In the illustrated example, the height of the operation knob 51 is a dimension that slightly protrudes from an imaginary line passing through the upper and lower interlock portions 21 of the slat 2.

On the indoor side surface portion of the vertical portion 31 of the seat plate 3, a lock prevention steel plate constituting the crime prevention plate material 6 is mounted so as to cover the indoor side surface portion of a predetermined area around the operation portion 5. The security plate 6 is made of metal in one preferred embodiment, but may be made of a material other than metal, such as resin, as long as it has a predetermined strength. The security plate 6 has a mounting portion 60 and a body portion 62 integrally formed with the mounting portion 60 via a stepped portion, and is attached to the seat plate 3 via the mounting portion 60. It extends so as to face the indoor side surface portion of the slat 2 located immediately above the seat plate 3.

More specifically, the security plate 60 includes a mounting portion 60 that extends vertically, a main body portion 62 that extends vertically, and a connection that integrally connects the upper end of the mounting portion 60 and the lower end of the main body portion 62. Part 61. The positional relationship between the mounting part 60 and the main body part 62 is such that the mounting part 60 is closer to the indoor side surface part of the seat plate 3 and the slat 2 and the main body part 62 is further away from the indoor side surface part of the seat plate 3 and the slat 2. In the state where the mounting portion 60 is mounted on the indoor side surface portion of the seat plate 3, the main body portion 62 faces the indoor side surface portion of the slat 2 with a gap. A portion on the upper end side of the main body 62 is formed with an inclined portion 63 extending in an inclined manner toward the indoor side surface portion of the slat 2. In the illustrated example, the connecting portion 61 that forms the step portion extends horizontally from the upper end of the mounting portion 60 in a direction away from the indoor side surface portion of the shutter curtain, but the connecting portion 61 does not necessarily extend horizontally. For example, it may be inclined. The dimension of the connecting piece 61 is such that when the mounting portion 61 is mounted on the interior side surface portion of the seat plate 3, the main body portion 62 is closer to the slat 2 than the imaginary line passing between the upper and lower interlock portions 21 of the slat 2. The dimension is set so as to be positioned closer to the indoor side surface portion of the slat 2 than the virtual vertical line passing through the operation knob 51 of the operation unit 5 and extending.

As shown in FIG. 2, the security plate 60 has predetermined dimensions in the opening width direction and the height direction, and in the shutter curtain 1, a predetermined area around a portion where the operation knob 51 of the operation unit 5 is provided. It is provided so as to cover the area. The mounting portion 60 has a height that covers substantially the entire interior side surface of the vertical portion 31 of the seat plate 3 and extends further downward than the portion where the operation portion 5 is provided. The security plate 6 is not shown on the seat plate 3 together with the operation unit 5 so that the mounting portion 60 is closely attached to the indoor side surface portion of the seat plate 3 and is sandwiched between the indoor side surface portion and the operation unit 5. It is fixed via a screw.

The main body 62 has a height that covers substantially the entire interior side surface of the slat 2 immediately above the seat plate 3. The inclined portion 63 of the main body portion 62 extends so that the tip thereof is close to the interlock portion 21 on the upper side of the slat 2. That is, the tip of the inclined portion 63 is located closer to the indoor side surface portion of the slat than the imaginary line passing between the upper and lower interlock portions of the slat 2.

The security plate 6 is a leaf spring material. In FIG. 3, when a force (in the direction of the arrow) from the outdoor side toward the indoor side acts on the main body 62 of the security plate 6, the security plate main body 62 becomes the base end. It rotates so as to be separated from the indoor side surface portion of the slat 2 as shown by a dotted line through the side (meeting portion between the lower end of the main body portion 62 and the connecting piece 61). When the force in the direction of the arrow is removed, the main body 62 returns to the original vertical posture by the spring force of the leaf spring material. In the first embodiment, the plate material 6 (main body portion 62) is elastically deformed. However, the plate material 6 (main body portion 62) may be plastically deformed. The plate material 6 that is plastically deformed has an effect similar to that of a third embodiment to be described later.

Therefore, even when the slat 2 immediately above the seat plate 3 is drilled or torn with a hammer, a security plate 6 is provided on the back side (inside the room) of the slat 2. Since it is provided, the operation unit 5 of the locking device cannot be accessed. Furthermore, even if a hole or a hole is made in the security plate 6 using a drill or a cutting blade, the main body 62 of the security plate 6 rotates so as to escape from the drill or the cutting blade. It is difficult to apply an effective force to the portion 62 for drilling or breaking, and it is difficult to make or break a hole in the security plate 6. Even if drilling or breaking of the vertical portion 31 of the seat plate 3 is attempted, the security plate 6 is not attached to the indoor side surface of the vertical portion 31 of the seat plate 3. Since the mounting portion 60 is polymerized, it has strength against drilling and breaking as compared with the case of only the vertical portion 31.

FIG. 4 is a longitudinal sectional view showing a state where the shutter curtain 1 shown in FIG. 3 is wound up. The upper end portion of the main body 62 of the security plate 6 is formed in an inclined portion 63 extending in an inclined manner toward the indoor side surface portion of the slat 2, and the security plate 6 is a leaf spring material, Normally, the main body 62 maintains a vertical posture. Therefore, when the shutter curtain 1 is wound, the main body 62 of the security plate 6 does not hit the lintel 7 or the like.

FIG. 5 shows a second embodiment of the crime prevention mechanism according to the present invention, which is similar to the first embodiment. The same members are denoted by the same reference numerals, and the description of the same members is shown. Can be referred to the description of the first embodiment. The security plate 6 according to the second embodiment is the same as the first embodiment in that it has a main body 62 that can be rotated through the base end side, but the main body 62 is a hinge 8. It is freely rotatable via Specifically, the main body portion 62 is formed separately from the mounting portion 60 and the connecting portion 61, and the base end portion of the main body portion 62 and the connecting portion 61 can be rotated via the hinge 8. It is connected. The hinge 8 is a spring hinge and is always biased to take an upright posture extending vertically by the spring force of the spring hinge when an external force does not act on the main body 62. .

In the second embodiment, when a force (in the direction of the arrow) directed from the outdoor side to the indoor side acts on the main body 62 of the security plate 6, the main body 62 of the security plate 6 becomes the base end side (the lower end of the main body 62 and As shown in FIG. 5, it is rotated so as to be separated from the indoor side surface portion of the slat 2 via the spring hinge 8 of the meeting portion with the connecting piece 61. When the force in the direction of the arrow is removed, the main body 62 returns to the original vertical posture by the spring force of the spring hinge 8.

Therefore, even when the slat 2 immediately above the seat plate 3 is drilled or torn with a hammer, a security plate 6 is provided on the back side (inside the room) of the slat 2. Since it is provided, the operation knob 51 of the operation unit 5 of the locking device cannot be accessed. Furthermore, even if a hole or a hole is made in the security plate 6 using a drill or a cutting blade, the main body 62 of the security plate 6 rotates so as to escape from the drill or the cutting blade. It is difficult to apply an effective force to the portion 62 for drilling or breaking, and it is difficult to make or break a hole in the security plate 6.

FIG. 6 shows a third embodiment of the security mechanism according to the present invention, which is similar to the first and second embodiments. The same members are denoted by the same reference numerals, and the same The description concerning the above-mentioned Example can be used for the explanation in the member. In the security plate 6 according to the third embodiment, a main body 62 that can be rotated via a proximal end is rotatable via a hinge 9. The mounting portion 60 and the connecting portion 61 are formed separately from each other, and the base end portion of the main body portion 62 and the connecting portion 61 are rotatably connected via a hinge 9. The difference from the second embodiment is that the hinge 9 is not a spring hinge. A locking piece 64 is formed on the back surface of the slat 2 located immediately above the seat plate 3 in the vicinity of the upper interlock portion 21, and the tip of the inclined portion 63 of the main body 62 is normally locked. By engaging with the piece 64, the main body 62 maintains an upright posture extending vertically.

In the third embodiment, when a force (in the direction of the arrow) directed from the outdoor side to the indoor side acts on the main body 62 of the security plate 6, the inclined portion 63 at the upper end of the security plate main body 62 becomes the locking piece 64. The main body 62 is separated from the indoor side surface of the slat 2 as shown in FIG. 6 via the spring hinge 9 on the base end side (association portion between the lower end of the main body 62 and the connecting piece 61). Rotate. And as shown in the right figure of FIG. 6, the main-body part 62 rotates to the attitude | position which covers the operation part 5 provided in the vertical part 31 of the seat board 3 with dead weight. Therefore, even when the slat 2 immediately above the seat plate 3 is drilled or torn with a hammer, a security plate 6 is provided on the back side (inside the room) of the slat 2. Since it is provided, the security plate 6 is rotated by an external force so as to cover the knob 51 of the operation unit 5 of the locking device, so that the operation unit 5 of the locking device cannot be accessed.

The embodiment shown in FIGS. 2 to 6 relates to a security plate material related to the locking mechanism provided on the seat plate 3, but an embodiment related to the security plate material related to the locking mechanism provided to the intermediate slat 20 is shown below. . The fourth embodiment shown in FIG. 7 corresponds to the first embodiment, the fifth embodiment shown in FIG. 8 corresponds to the second embodiment, and the sixth embodiment shown in FIG. 9 corresponds to the third embodiment. . In each Example, the same code | symbol is attached | subjected to the same member and the description which concerns on another Example can be used for the description regarding the same member.

FIG. 7 is a partial sectional view showing the intermediate slat 20 and the slats 2 positioned above and below the intermediate slat 20, and shows a fourth embodiment of the present invention. The security plate 6 extends not only to the main body 62 extending to face the indoor side surface of the upper slat 2 of the intermediate slat 20 but also to the indoor side surface of the lower slat 2 of the intermediate slat 20. It has a main body 620 to be taken out.

The security plate 6 includes a mounting portion 60 extending vertically, a connecting portion 61 extending horizontally from the upper end of the mounting portion 60, and a main body portion extending vertically upward from the tip of the connecting portion 61. 62, a connecting portion 610 extending horizontally from the lower end of the mounting portion 60, and a main body portion 620 extending vertically downward from the connecting portion 610, and the upper ends of the main body portions 62 and 620, respectively. The part and the lower end part are formed with inclined parts 63 and 630 extending in an inclined manner toward the indoor side surface part of the slat. The dimensions of the connecting portions 61, 610 are such that when the mounting portions 61, 610 are mounted on the surface portion of the slat 20, the main body portions 63, 630 are farther from the slat 2 than an imaginary line passing between the upper and lower interlock portions 21 of the slat 2. The dimension is set so as to be located closer to the indoor side surface portion of the slat 2 than the virtual vertical line passing through the operation knob 51 of the operation unit 5 and extending.

The security plate 6 is a leaf spring material, and when a force (in the direction of an arrow) directed from the outdoor side to the indoor side acts on the main body 62, 620 of the security plate 6, the main body 62, 620 of the security plate 6 It rotates so as to be separated from the surface portion of the slat 2 via the side (the meeting portion between the lower end of the main body portion 62 and the connecting piece 61 and the meeting portion between the upper end of the main body portion 620 and the connecting piece 610). When the force in the arrow direction is removed, the main body portions 62 and 620 return to the original vertical posture by the spring force of the leaf spring material. The security plate 6 may be integrally formed by processing one plate, or may be formed from two members for the upper slat and the lower slat.

Therefore, even if the slat 2 positioned directly above or directly below the intermediate slat 20 is drilled or cut with a hammer, the back side (inside the room) of the slat 2 is used for crime prevention. Since the plate material 6 is provided, the operation unit 5 of the locking device cannot be accessed. Furthermore, even if a hole is to be drilled or torn in the security plate 6 using a drill or a cutting blade, the main body 62, 620 of the security plate 6 rotates so as to escape from the drill or the cutting plate. The body portions 62 and 620 cannot be applied with an effective force for drilling or breaking, and it is difficult to drill or break the security plate 6. Even if the drilling or breaking of the intermediate slat 20 is attempted, since the mounting portion 60 of the security plate 6 is superposed on the indoor side surface of the intermediate slat 20, Compared to the case of only the intermediate slat 20, there is a strength against drilling and breaking.

The upper end portion of the main body portion 62 and the lower end portion of the main body portion 620 of the security plate 6 are respectively formed in inclined portions 63 and 630 extending in an inclined manner toward the indoor side surface portion side of the slat 2, and the crime prevention The plate material 6 is a leaf spring material, and the main body 62 normally maintains a vertical posture. Therefore, the main body 62 of the security plate 6 does not hit the lintel 7 or the like when the shutter curtain 1 is wound, and the security plate 6 is not wound when wound on a winding shaft (not shown). It is designed not to get in the way.

FIG. 8 shows a fifth embodiment of the crime prevention mechanism according to the present invention. The same members as those in the other embodiments are denoted by the same reference numerals, and the description of the other embodiments can be referred to as appropriate. The security plate 6 according to the fifth embodiment has main body portions 62 and 620 that are rotatable via the base end side. Specifically, the main body portions 62 and 620 are formed separately from the mounting portion 60 and the base end portions 61 and 610, and the base end portions of the main body portions 62 and 620 and the connecting portions 61 and 610 are exactly the same. It is rotatably connected via a number 8 (only the upper side is shown). The hinge 8 is a spring hinge and is urged so that it always takes an upright posture extending vertically, that is, when no external force acts on the main body portions 62 and 620.

In the fifth embodiment, when a force (in the direction of the arrow) directed from the outdoor side to the indoor side acts on the main body portions 62 and 620 of the security plate material 6, the main body portions 62 and 620 of the security plate material are in the base end side (main body portion). As shown in FIG. 8, the slat 2 is separated from the indoor side surface portion via the spring hinge 8 of the lower end 62 and the connecting piece 61, and the upper end of the main body 620 and the connecting piece 610. To turn. When the force in the direction of the arrow is removed, the main body portions 62 and 620 return to the original vertical posture by the spring force of the spring hinge 8.

Therefore, even if the slat 2 positioned directly above or directly below the intermediate slat 20 is drilled or cut with a hammer, the back side (inside the room) of the slat 2 is used for crime prevention. Since the plate material 6 is provided, the operation unit 5 of the locking device cannot be accessed. Furthermore, even if a hole is to be drilled or torn in the security plate 6 using a drill or a cutting blade, the main body 62, 620 of the security plate 6 rotates so as to escape from the drill or the cutting plate. It is difficult to apply an effective force to the main body 62 for drilling or breaking, and it is difficult to make a hole in the security plate 6 or to break it.

FIG. 9 shows a sixth embodiment of the crime prevention mechanism according to the present invention. The same members as those in the other embodiments are denoted by the same reference numerals, and the description of the other embodiments can be referred to as appropriate. The security plate 6 according to the sixth embodiment has main body portions 62 and 620 that can be rotated via the base end side. Specifically, the main body portions 62 and 620 are formed separately from the mounting portion 60 and the base end portions 61 and 610, and the base end portions of the main body portions 62 and 620 and the step portions 61 and 610 are exactly the same. It is rotatably connected via a number 9 (only the upper side is shown). The difference from the fifth embodiment is that the hinge 9 is not a spring hinge. A locking piece 64 (only the upper side is shown) is formed on the back surface of the slat 2 located immediately above the intermediate slat 20 in the vicinity of the upper interlock portion 21, and the main body portions 62 and 620 are always inclined. Since the tips of the portions 63 and 630 are locked to the locking piece 64, the main body portions 62 and 620 maintain an upright posture extending vertically.

In the sixth embodiment, when a force (in the direction of the arrow) directed from the outdoor side toward the indoor side acts on the main body 62 of the security plate 6, the inclined portion 63 at the upper end of the main body 62 of the security plate 6 becomes the locking piece 64. The main body portion 62 is rotated so as to be separated from the indoor side surface portion of the slat 2 through the hinge 9 on the base end side (the meeting portion between the lower end of the main body portion 62 and the connecting piece 61) as shown in FIG. Move. Then, as shown in the right diagram of FIG. 9, the slat 20 is rotated to a posture so as to cover the operation knob 51 of the operation unit 5 provided on the slat 20. On the other hand, when a force (in the direction of the arrow) directed from the outdoor side to the indoor side acts on the main body portion 620 of the security plate material 6, the inclined portion 630 at the upper end of the main body portion 620 of the security plate material comes off from the locking piece (not shown), The part 620 is rotated through a hinge (not shown) on the base end side (the meeting part of the lower end of the main body part 620 and the connecting piece 610), but the weight of the main body part 620 makes the main body part 62 in a vertical posture. Acts to return. Even if the main body 620 is forcibly rotated, the main body 620 is rotated so as to cover the operation knob 51 of the operation unit 5 provided in the intermediate slat 20. Therefore, even if the slat 2 positioned directly above or directly below the intermediate slat 20 is drilled or cut with a hammer, the back side (inside the room) of the slat 2 is used for crime prevention. Since the plate member 6 is provided, the security plate member 6 is rotated by an external force so as to cover the knob 51 of the operation unit 5 of the locking device, so that the operation unit 5 of the locking device cannot be accessed.

It is a schematic front view of the shutter device according to the present invention. It is a partial front view of the lower end part of a shutter curtain. It is sectional drawing of the lower end part of the shutter curtain which shows 1st Example which concerns on this invention. It is sectional drawing of the lower end part of a shutter curtain in the state by which the shutter curtain was wound up. It is sectional drawing of the lower end part of the shutter curtain which shows 2nd Example which concerns on this invention, and has shown rotation of the board for crime prevention when external force acts. It is sectional drawing of the lower end part of the shutter curtain which shows 3rd Example which concerns on this invention, and has shown rotation of the board | plate for crime prevention when an external force acts. It is sectional drawing of the intermediate slat of the shutter curtain which shows 4th Example which concerns on this invention. It is sectional drawing of the intermediate slat of the shutter curtain which shows 5th Example which concerns on this invention, and has shown rotation of the board | plate for crime prevention when an external force acts. It is sectional drawing of the intermediate slat of the shutter curtain which shows 6th Example which concerns on this invention, and has shown rotation of the board | plate for crime prevention when an external force acts.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter curtain 2 Slat 21 Interlock part 3 Seat board 5 Operation part 51 Operation knob 6 Crime prevention board 60 Mounting part 61,610 Connection part 62,620 Main part 8 Spring hinge 9 Hinge

Claims (6)

In a shutter device provided with a locking mechanism, the shutter curtain seat plate or slat is provided with an operating portion of the locking mechanism, and the interior side surface portion of the shutter curtain covers a region near the operating portion. For the plate ,
When the operation part is provided on the seat plate, the security plate has a portion facing the indoor side surface portion of the slat located on the upper side of the seat plate,
When the operation part is provided on the slat, the crime prevention plate material is located on the slat located above the slat provided with the operation part or / and below the slat provided with the operation part. Having a portion facing the interior side surface of the slat,
The part of the security plate material is normally opposed to the indoor side surface portion of the slat in a vertical posture, and external force in the direction from the outdoor side toward the indoor side through the opening formed in the shutter curtain is applied to the part of the security plate material. When acted, a security mechanism for an opening / closing body , wherein the part of the security plate is configured to bend or rotate so as to escape from the external force with the operation unit side as a base end . 2. The security mechanism according to claim 1, wherein the security plate is made of a leaf spring, and a portion of the security plate is bent so as to escape from the external force. 2. The security mechanism according to claim 1, wherein the portion of the security plate is rotatable through a hinge, and the portion of the security plate is rotated so as to escape from the external force. 4. The crime prevention mechanism according to claim 3, wherein the hinge is a spring hinge, and the portion of the plate for crime prevention returns to a vertical posture when the action of the external force disappears. In any one of claims 1 to 4, security mechanism, characterized in that it is configured so as to cover the operating portion by portion of the security for the plate material is bent or pivoted to escape from the external force. In any one of claims 1 to 5, part of the security for the plate, said indoor side portion than an imaginary line portion of the crime prevention board material passes between the interlocking portions of the upper and lower slats having an indoor side surface portion which faces extends out of the operation unit side is positioned on the side away as proximal from extending end portion of the crime prevention plate is formed in the inclined portion extending toward the indoor side unit, the inclined portion The crime prevention mechanism characterized by the front-end | tip of being located near the said indoor side part rather than this virtual line.

Images