JP3239573U - Power outlet plug sensor type anti-theft device - Google Patents

Abstract

An object of the present invention is to provide an anti-theft device that can be easily attached and detached while avoiding erroneous detection errors that are likely to occur when a switch-type sensor of the anti-theft device is attached to the surface of a product with many curved surfaces. A power outlet plug insertion slot 13 into which a blade 5 of a power outlet plug 4 of a product can be inserted is prepared, and the plug blade 5 is detected by a power outlet plug sensor unit 25 to be attached. It is possible to provide an anti-theft device that can be easily attached and detached without being affected by the shape of the product, that enables stable detection, and that avoids malfunction. [Selection drawing] Fig. 15

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-theft device using the blade of a power outlet plug as detection means.

The method of attaching the sensor of the anti-theft device to the product is as follows. A wire passed through a hole or gap is fixed, and in the pin type described in Patent Document 3, a pin is passed through the cloth product to attach it.

Japanese Patent Application Laid-Open No. 2002-8152 Japanese Patent Laid-Open No. 11-283131 JP 2001-325673

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For products with many curved surfaces, such as hair dryers and power tools, where there is no hole for attaching a wire sensor, the switch sensor was fixed using double-sided tape or wrapped with plastic wrap. As a result, even a slight movement of the sensor may cause the sensor switch to detect an abnormality. In addition, if the sensor is attached directly to the product with double-sided tape, it will be troublesome to cleanly remove the double-sided tape before selling the product, and if the product is attached for a long time, the product will change color due to ultraviolet rays. There was also the inconvenience of doing so. As a product display in a store, the attachment of the sensor has an adverse effect on the appearance of the product because the attached sensor is unrelated to the original product. To solve the above-mentioned drawbacks by not directly attaching to a curved surface or product surface where attachment is unstable, and by attaching to an inconspicuous power outlet plug.

The present invention solves the problem by making the sensor into a shape into which the blade of the power outlet plug of the product can be inserted, and by detecting the blade, it is possible to obtain an abnormal signal of the sensor. Methods for detecting the blade include conduction by an electrode, blocking or reflection of light by an optical sensor, and a method by a switch.

As described above, the power outlet plug sensor type anti-theft device of the present invention is not only easily attached to the power outlet plug of the product, but also easy to remove. stable operation with less

Fig. 2 is a cross-sectional view of the power outlet plug sensor unit (claim 1 electrode type) of the present invention; Fig. 2 is a cross-sectional view when a power outlet plug is attached to the power outlet plug sensor unit (claim 1 electrode type) of the present invention; Fig. 2 is a cross-sectional view of the power outlet plug sensor unit (claim 1 light detection type) of the present invention; Fig. 2 is a cross-sectional view when a power outlet plug is attached to the power outlet plug sensor unit (first light detection type) of the present invention; Fig. 2 is a cross-sectional view of the power outlet plug sensor unit (claim 1 switch type) of the present invention; Fig. 2 is a cross-sectional view when a power outlet plug is attached to the power outlet plug sensor unit (claim 1 switch type) of the present invention; FIG. 2 is a front view of an integrated example (claim 2) comprising a power outlet plug sensor and a monitoring device of the present invention; FIG. 2 is a top view of an integrated example (claim 2) comprising a power outlet plug sensor and monitoring device of the present invention; FIG. 10 is a bottom view of an integrated example (claim 2) provided with a power outlet plug sensor and a monitoring device of the present invention; It is a front view of the example (claim 3) provided with the means (mini-plug) which connects a power outlet plug sensor and a monitoring apparatus of this invention. It is a top view of the example (claim 3) provided with the means (mini-plug) which connects a power outlet plug sensor and a monitoring apparatus of this invention. It is a front view of the example (claim 3) provided with the means (wire pin) which connects a power outlet plug sensor and a monitoring apparatus of this invention. It is a top view of the example (claim 3) provided with the means (wire pin) which connects a power outlet plug sensor of this invention, and a monitoring apparatus. FIG. 2 is a cross-sectional view of an example of an anti-theft device (claim 2) provided with a power outlet plug sensor (electrode type) and a monitoring device according to the present invention; Fig. 2 is a cross-sectional view when a power outlet plug is attached to an example of an anti-theft device (claim 2) provided with a power outlet plug sensor (electrode type) and a monitoring device of the present invention; Fig. 2 is a block diagram of an example of an anti-theft device (claim 2) comprising a power outlet plug sensor and a monitoring device of the present invention; FIG. 10 is a diagram of an example of attaching a conventional switch-type anti-theft device to a curved surface; FIG. 10 is a diagram showing a state in which the conventional switch-type anti-theft device is mis-detected by a sensor switch due to a shift in position; FIG. 2 is a view showing the state of use of an example of the power outlet plug sensor type anti-theft device of the present invention (claim 2).

It has a means for detecting at least one blade of the power outlet plug blade of the product, detects the blade when the sensor is attached to the power outlet plug of the product, notifies the monitoring device unit, starts monitoring, and detects the power outlet. When the plug is removed, an abnormality signal indicating that the blade cannot be detected is transmitted to the monitoring device section, and the monitoring device section performs an abnormality detection operation.

An embodiment (electrode integrated type) will be described below with reference to the accompanying drawings. In order to detect the blade, there are sensor electrodes 1 and 2 which are independent of each other and are connected to the substrate 3 of the monitoring device section 25 . When the power outlet plug 4 of the product is attached, the sensor electrode 1 and the sensor electrode 2 are electrically connected by the plug blade 5 of the power outlet plug, and the microcomputer 17 on the board 3 is notified that the plug blade has been detected. After that, when the power outlet plug 4 of the product is removed, the continuity between the sensor electrode 1 and the sensor electrode 2 by the blade 5 is lost, and the microcomputer 17 on the substrate 3 of the monitoring device section 25 recognizes that an abnormality has been detected.

The power outlet plug sensor section 25 and the monitoring device section 26 are integrated by a case 10a, and the monitoring device section 25 has an LED display section 11 and a buzzer sound opening 12 . The power outlet plug 4 is attached to the power outlet plug insertion port 13 .

When the monitor unit 26 receives the abnormal signal from the power outlet plug sensor unit 25, the transmission coil 19 transmits the gate alarm signal 107, the LED 20 blinks, and the buzzer 21 sounds.

The operation signal 106 received by the receiving coil 18 controls the control of the monitoring device section, including the stoppage of the buzzer sound. Receive coil 18 is also used to receive an interrogation signal 104 emitted by gate 103 .

A combination of the light emitting element 7 and the light receiving element 8 (or a reflective photosensor) and the detection switch 9 can also be used to detect the blade 5 .

1 sensor electrode a
2 sensor electrode b
3 Substrate 4 Power outlet plug 5 Plug blade 6 Plug blade clamp 7 Light emitting element 8 Light receiving element 9 Detection switch 10 Case 11 LED display unit 12 Buzzer sound opening 13 Power outlet plug insertion port 14 Cable 15 Mini plug 16 Wire pin 17 Microcomputer 18 Receiving coil 19 Transmitting coil 20 LED
21 Buzzer 22 Battery 23 Battery terminal +
24 Battery terminal -
25 Power outlet plug sensor 26 Monitoring device 100 Cylindrical product (for example, dryer air blower)
101 Conventional switch type anti-theft device 102 Sensor switch 103 Wrap (for mounting anti-theft device)
104 Gate 105 Call signal 106 Operation signal transmitter (remote controller)
107 Operation signal 108 Gate alarm signal 109 Power outlet plug sensor type anti-theft device (integrated type)

Claims (3)

An anti-theft device characterized by comprising a sensor unit attached to a power outlet plug and detecting a blade of the outlet plug. 2. An anti-theft device in which a sensor unit is integrated with a monitoring device, wherein an alarm is issued upon receiving an abnormal signal when a blade is removed or an interrogation signal issued from a gate. Anti-theft device. 2. The anti-theft device according to claim 1, wherein the sensor section is provided with means connectable to the monitoring device.

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