JP2006145310A - Security device for external fence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a security device for external fence, capable of preventing from generation of discrepancy in adjustment of angle by the lapse of time, using a simple constitution as well as capable of easily adjusting the angle of reflector. <P>SOLUTION: The security device detects and announces the interruption of IR ray interrupted by an intruder, when the ray is transmitted from a transmitter and received by a receiver, where the transmitter and the receiver are arranged on one and another sides of the external fence perpendicularly crossing each other, on the cross point the reflector for reflecting the IR ray from the transmitter to the receiver, and the reflection unit housing the rotation shaft of the reflection plate freely rotatably in the external case are provided. The upper end of the rotational shaft 3 is made to expose on the external case 5 for an adjustment part 4 of the reflection angle of the IR ray by the reflector 2, and the cover 6 for covering the reflection angle adjusting part 4 separated from the external case 5 is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an exterior fence crime prevention device that receives infrared rays transmitted from a transmission section at a reception section, and in particular, a transmission section and a reception section are arranged on one side and the other side of the exterior fence that cross each other. In addition, the present invention relates to an exterior fence crime prevention apparatus having a configuration in which a reflection unit that reflects infrared rays from a transmission unit toward a reception unit is arranged at the intersection of one side and the other side.

  2. Description of the Related Art As a crime prevention device for an exterior fence of a house, an exterior fence crime prevention device of a type in which infrared rays transmitted from a transmission unit are received by a reception unit is known. In this case, it is necessary to install each of the transmitting unit and the receiving unit at a crossing point between one side and the other side of the external fence that crosses each other, which is a corner portion of the site.

  Therefore, when the number of instruments increases, the exterior fence crime prevention device is conspicuous when viewed from the outside, and there is a risk of deteriorating the exterior design of the house, such as the appearance of a beautiful image. In addition, there is a concern that intimidation by monitoring will be given to neighboring residents, and the overall image of the living environment will be impaired.

  Therefore, in the course of reaching the present invention, the applicant has a transmission unit 101 that transmits infrared A on one side and a reception unit 102 that receives infrared A on the other side, as shown in FIG. After the research of the exterior fence crime prevention device configured to continuously monitor the outer periphery of the fence using the transmission / reception integrated detection unit 100, it is further transmitted to one side 71 and the other side 72 of the exterior fence 7 crossing each other. The part 101 and the receiving part 102 are respectively arranged, and a reflection unit 200 in which a reflection plate for adjusting the infrared optical axis is rotatably accommodated is arranged at the intersection of the one side 71 and the other side 72 which becomes a fence corner part. The exterior fence crime prevention device is studied, and the method of changing and adjusting the traveling direction of the infrared A by adjusting the angle of the reflector is being developed.

By the way, when adjusting and fixing the optical axis of the said reflecting plate, there exists a concern that the transmission defect of the infrared rays A may be caused by the occurrence of an adjustment shift due to secular change. Moreover, in order to suppress the occurrence of adjustment deviation, the structure becomes complicated, and there is a concern about cost increase.
Japanese Utility Model Publication No. 6-67908 JP-A-6-44468

  The present invention has been made in view of the above-described conventional problems, and the problem is to provide an exterior fence crime prevention device that can easily adjust the angle of the reflector and prevent adjustment displacement due to secular change with a simple configuration. It is to provide.

  In order to solve the above problems, the present invention is a crime prevention device that detects and notifies when an infrared ray is blocked by an intruder when receiving infrared rays transmitted from a transmission unit, The transmitting unit and the receiving unit are arranged on one side and the other side of the external fence that cross each other, and the infrared rays from the transmitting unit are reflected toward the receiving unit at the intersection of the one side and the other side. In an exterior fence crime prevention device in which a reflecting plate and a reflecting unit in which a rotating shaft of the reflecting plate is rotatably accommodated in an outer case are disposed, one end of the rotating shaft is exposed on the upper surface of the outer case and the reflecting The infrared reflection angle adjustment unit is configured by a plate, and a cover body is provided that covers the same reflection angle adjustment unit that is separate from the outer case.

  Then, an uneven shape is formed on the outer periphery of one end of the rotating shaft, and a shaft fixing portion is formed on the inner side of the cover body to engage with the uneven shape and fix the rotating shaft when attached to the outer case. Is preferred.

  A transmitting unit that transmits infrared rays and a receiving unit that receives the infrared rays are respectively arranged on one side and the other side of the external fence that cross each other, and infrared rays from the transmitting unit are arranged at the intersection of the one side and the other side. A reflection plate that reflects the light toward the receiver and a reflection unit in which the rotation axis of the reflection plate is rotatably accommodated in the outer case are arranged to detect when infrared rays are blocked by an intruder. A cover body that is separate from the outer case, wherein one end of the rotating shaft is exposed on the upper surface of the outer case of the reflecting unit of the external fence security device that performs the notification, and the infrared reflection angle adjusting unit by the reflecting plate is separated from the outer case Since the cover body is disposed, it is possible to prevent rainwater and the like from entering and to prevent the adjustment portion from being subjected to external force.

  In addition, as a result of forming a concave and convex shape on the outer peripheral edge of one end of the rotating shaft and forming a shaft fixing portion that engages the same concave and convex shape when the cover body is attached to the outer case to fix the rotating shaft, When the body is mounted on the outer case, the shaft fixing part engages in an irregular shape and fixes the rotating shaft, so that the optical axis does not shift due to secular change and vibration, and a complicated notch mechanism becomes unnecessary, Costs can be reduced, and furthermore, the formation of a concavo-convex shape on the outer peripheral edge of one end of the rotating shaft improves the touch when adjusting, and has the effect of making an accurate adjustment.

  In order to clarify the above and other effects, features and advantages of the present invention, embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

  The exterior fence crime prevention device of the present invention receives the infrared ray (A) transmitted from the transmission unit (101) by the reception unit (102) as shown in FIG. 5 as described in the background art section. A security device that detects and notifies when the infrared ray (A) is blocked by an intruder when the intruder performs, and one side (71) and the other side (72) of the exterior fence (7) crossing each other The transmission unit and the reception unit are respectively disposed at the intersection, and a reflection plate that reflects infrared rays from the transmission unit toward the reception unit and an axis of rotation of the reflection plate are arranged at the intersection of one side and the other side. As shown in FIG. 1, in the exterior fence crime prevention device in which a reflection unit rotatably accommodated in a case is disposed, one end of the rotary shaft 3 is exposed on the upper surface of the outer case 5 and the infrared rays by the reflection plate 2 are used. A reflection angle adjustment part 4 of A 5 and has a reflecting unit 1 which is disposed a cover member 6 for covering the same reflection angle adjusting part 4 separate.

  Further, an irregularity 31 is formed on the outer peripheral edge of one end of the rotating shaft 3, and the shaft that engages the irregularity 31 when the cover 6 is attached to the outer case 5 to fix the rotating shaft 3. A fixing portion 61 is also formed.

  Specifically, this exterior fence crime prevention device is of an infrared detection system for continuously monitoring a crime prevention area such as a house exterior fence, and has a transmitter on one side as shown in FIG. The main body is composed of a transmission / reception integrated type having a receiving unit on the other side, a detection unit having only the receiving unit on one side, and the reflection unit 1.

  The transmission unit of the detection unit is provided with two upper and lower light projecting elements made of light emitting diodes that emit the infrared light (A), and the reception unit has two upper and lower light projecting elements made of phototransistors that receive the infrared light. A light receiving element is provided. And this transmission-and-reception integrated detection unit is separated at a plurality of locations of the fence so that the transmission unit of one of the opposing detection units and the reception unit of the other detection unit face each other. When the infrared rays transmitted from the receiver are received by the receiving unit, the infrared rays are blocked by an intruder, and notification is given.

  In addition, by providing a transmission / reception function to one detection unit as described above, the number of detection units is reduced by half, making it difficult to see from the outside, and an excellent design can be obtained and the living environment image is not impaired. It becomes the structure which can be done. The reason why the upper and lower infrared rays A are two (double beam) is to prevent malfunction due to small animals such as birds, fallen leaves, disturbances, and the like.

  The reflection unit 1 is installed at the fence corner as shown in FIG. 5. As shown in FIG. 1, as shown in FIG. 1, a pair of upper and lower infrared light axis adjusting reflectors 2, and a rotating shaft 3 of the reflector 2. And an infrared reflection angle adjusting unit 4 which is one end of the rotating shaft 3 and rotates the reflecting plate 2 about the vertical axis and which is exposed to the upper surface of the outer case 5 and which is one end of the rotating shaft 3. In this case, the integrated body of the plate 2 and the rotary shaft 3 is covered with a cover 52 made of an infrared transmitting synthetic resin while being attached to a base 51 constituting the outer case 5 made of synthetic resin.

  The upper surface of the base 51 and the cover 52 is provided with a notch for forming an opening through which one end of the rotating shaft 3 is inserted and protruded outside the outer case 5, and the reflection angle adjusting unit 4 protruding from the opening is externally provided. In this way, the angle of the reflecting plate 2 can be easily adjusted by rotating the rotating shaft 3.

  In this case, the rotating shaft 3 has a locking structure for locking the reflecting plates 2 and 2 at a substantially bar-shaped upper and lower intermediate position that hangs from one end having an uneven shape 31 on the outer peripheral edge serving as the reflection angle adjusting unit 4. The lower end is supported by a bearing provided on the lower surface of the outer case 5 and is rotatably accommodated in the outer case 5.

  The cover body 6 is separate from the outer case 5, and in this case, as shown in FIG. 2, as shown in FIG. 2, a rib-shaped shaft fixing that engages with the concavo-convex shape 31 of the rotating shaft 3 and fixes the rotating shaft 3. It has the part 61 in a substantially center position, and is formed with the synthetic resin. The cover body 6 is mounted on the upper surface of the outer case 5 so as to cover the reflection angle adjusting unit 4 by sliding in the lateral direction to be locked and attached. As described above, the cover body 6 that covers the reflection angle adjusting unit 4 that is separate from the outer case 5 is provided, so that the adjustment work is easy and the intrusion of rainwater and the like is prevented, and the reflection angle adjusting unit 4 has an effect of protecting external force from being applied.

  The exterior fence crime prevention apparatus having the above-described configuration includes a transmission unit that transmits infrared rays and a reception unit that receives infrared rays on one side and the other side of the exterior fence that cross each other, and the one side and the other side of the fence are arranged. At a crossing point, a reflector that reflects infrared rays from the transmitter toward the receiver and a reflection unit 1 in which the rotating shaft 3 of the reflector is rotatably accommodated in an outer case 5 are disposed. When the infrared ray is blocked by this, this is detected and notified.

  At this time, the reflection angle adjusting unit 4 serving as one end of the rotating shaft 3 exposed on the upper surface of the outer case 5 of the reflecting unit 1 is adjusted from the outside to adjust the direction of infrared reflection by the reflecting plate 2, and then shown in FIG. Thus, the reflection angle adjusting unit 4 is covered with a cover body 6 separate from the outer case 5, but when the cover body 6 is attached to the outer case 5, as shown in FIG. The rotating shaft 3 is fixed by engaging with the uneven shape 31.

  Therefore, according to the exterior fence crime prevention apparatus described above, one end of the rotating shaft 3 is exposed on the upper surface of the outer case 5 of the reflecting unit 1, and the infrared reflection angle adjusting unit 4 by the reflecting plate 2 is different from the outer case 5. Since it is covered with a separate cover body 6, it can be easily adjusted from the outside, and the provision of the cover body prevents intrusion of rainwater and the like so that no external force is applied to the adjustment portion. effective.

  Further, a concave-convex shape 31 is formed on the outer peripheral edge of one end of the rotary shaft 3, and a shaft fixing portion 61 that engages with the concave-convex shape 31 and fixes the rotary shaft 3 when attached to the outer case 5 inside the cover body 6. As a result, when the cover body 6 is attached to the outer case 5, the shaft fixing portion 61 engages with the concavo-convex shape 31 to fix the rotating shaft 3, thereby shifting the optical axis due to secular change or vibration. In addition, a complicated notch mechanism is not required, and the cost can be reduced. Further, the unevenness 31 is formed on the outer peripheral edge of one end of the rotary shaft 3 so that the touch when adjusting is improved and accurate adjustment can be performed. There is also an effect.

  The present invention is not limited to each of the above-described embodiments. For example, each of the embodiments can be appropriately changed within the scope of the technical idea of the present invention, for example, the concavo-convex shape 31 has a mountain shape other than the illustrated square shape. It goes without saying that it can be done.

The perspective view which shows schematic structure of the reflection unit of the exterior fence crime prevention apparatus which is one Embodiment of this invention. The side view which shows the axis | shaft fixing | fixed part which is the principal part of the reflection unit of the same exterior fence crime prevention apparatus. The perspective view which shows the cover body of the reflection unit of the same exterior fence crime prevention apparatus. It is explanatory drawing which shows the axis | shaft fixing | fixed part which fixes the rotating shaft of the reflection unit of the same exterior fence crime prevention apparatus, (a) is an engagement state of a shaft fixing part, (b) shows the expanded state. The perspective view which shows the whole installation state of an exterior fence crime prevention apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reflection unit 2 Reflector 3 Rotating shaft 4 Reflection angle adjustment part 5 Outer case 6 Cover body 61 Shaft fixing part

Claims (2)

A crime prevention device that detects and notifies when an infrared ray is blocked by an intruder when receiving infrared rays transmitted from a transmission unit,
The transmitting unit and the receiving unit are arranged on one side and the other side of the external fence that cross each other, and the infrared rays from the transmitting unit are reflected toward the receiving unit at the intersection of the one side and the other side. In the exterior fence crime prevention device in which the reflection plate and the reflection unit in which the rotation axis of the reflection plate is rotatably accommodated in the outer case are arranged,
One end of the rotating shaft is exposed on the upper surface of the outer case to serve as the infrared reflection angle adjustment unit by the reflector, and a cover body is provided that covers the same reflection angle adjustment unit that is separate from the outer case. Exterior fence crime prevention device characterized by   An uneven shape is formed on the outer peripheral edge of one end of the rotating shaft, and a shaft fixing portion is formed on the inner side of the cover body for engaging the same uneven shape and fixing the rotating shaft when mounted on the outer case. The exterior fence crime prevention device according to claim 1.

Images