JPH0765254A - Antitheft device - Google Patents

Abstract

PURPOSE:To provide the antitheft device which never starts operating in an unused state owing to vibration, etc. CONSTITUTION:In the antitheft device provided with a member 3 for fitting state detection which detects the state of fitting to an object to be protected from theft so that the member is exposed to the outside of a housing 2 and further provided with an alarm output circuit G which detects the housing 2 being detached from the object to be protected from theft on the basis of information of the fitting state detection member 3 and outputs an alarm when detecting the detachment and a battery V which drives the alarm output circuit G, a power switch for turning ON and OFF the supply of electric power between the battery V and alarm output circuit G is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a mounting state detecting member for detecting a mounting state with respect to an antitheft object in a state of being exposed to the outside of a casing, and the mounting state is provided in the casing. An alarm output circuit that detects that the casing is removed from the antitheft object based on the information of the detection member and outputs an alarm when the removal is detected, and a battery that drives the alarm output circuit are provided. Anti-theft device.

[0002]

2. Description of the Related Art Such an antitheft device is used, for example, in a state where it is attached to an antitheft object such as a product displayed in a store, and when the antitheft device is illegally removed from the antitheft object, That is, if the antitheft device is forcibly removed from the antitheft device when the alarm output circuit is in the operating state, an alarm is output. When the anti-theft device is removed from the anti-theft object, the state of the mounting state detecting member changes accordingly.Therefore, the alarm output circuit is It detects that it has been removed from the anti-theft object and outputs an alarm.

There are various types of attachment state detecting members according to the form of the anti-theft object to which the anti-theft device is attached. For example, a switch provided on the housing for retiring upon contact with the anti-theft object is provided. It is also used as an object or an attachment to the anti-theft object, and it is sandwiched in the form of a wire that connects to the case by tying it to the anti-theft object or in a state where the anti-theft object is inserted between the case and the object. There are pins, etc. In the case of the above-mentioned switch mounting state detection member, when the case of the anti-theft device is forcibly removed from the anti-theft object, the switch on / off state changes, and the wire or pin state is detected. In the case of an application member, the wire-like attachment state detecting member is cut, or the pin-like attachment state detecting member is pulled out from the case, and the case is removed from the antitheft object. Therefore, each state changes.

The alarm output circuit outputs an alarm on the basis of the information on the change in the state of the mounting state detecting member described above. As a mode of outputting the alarm, a buzzer is generally provided on the antitheft device itself. It has been considered to provide a device such as to emit an alarm sound, or to output an electric wave signal as an output of an alarm and receive the electric wave signal to emit an alarm sound.

As a power source for driving the alarm output circuit in the housing, a battery for driving the alarm output circuit is generally housed in the housing in order to downsize the antitheft device as a whole. Therefore, it is also necessary to incorporate means for turning on / off the supply of electric power from the battery to the alarm output circuit in the housing.
Conventionally, as a means for turning on / off the supply of electric power, a configuration has been considered in which the battery is turned on and off depending on whether or not the battery is connected to electrode terminals for contacting both electrodes.

[0006]

However, in the above-mentioned conventional configuration, the battery moves due to vibration or the like during transportation of the anti-theft device to come into contact with the electrode terminals, and power is supplied to the alarm output circuit to start the operation. Therefore, the alarm output circuit may output an alarm depending on the state of the mounting state detection member at the same time, and the improvement has been desired. The present invention has been made in view of the above circumstances, and an object thereof is to provide an antitheft device in which an antitheft device that is not in use does not start operating erroneously due to vibration or the like.

[0007]

The antitheft device of the present invention is provided with an attachment state detecting member for detecting the attachment state to an antitheft object in a state of being exposed to the outside of the casing, and the casing is provided. An alarm output circuit that detects that the housing has been removed from the antitheft object based on the information of the attachment state detection member in the body and outputs an alarm when the removal is detected, and the alarm output circuit is driven. The first characteristic configuration is that a power switch for turning on / off power supply is provided between the battery and the alarm output circuit.

A second characteristic configuration is that in the first characteristic configuration, the operated portion of the power switch is provided so as to be recessed from the surface of the casing. Third
In the characteristic configuration according to the first or second characteristic configuration, the attachment state detection member includes an attachment connected to the housing, and the power supply is connected with the attachment of the attachment to the housing. The point is that the switch is configured to switch from an off state to an on state. A fourth characteristic configuration is the pinion gear according to the first, second or third characteristic configuration, which engages with a turning operation member for turning off the power switch in the housing, and a rack portion provided in the turning operation member. Is provided, and the pinion gear is configured to be rotationally driven by an operating tool having a rack portion at its tip to turn off the power switch.

A fifth characteristic configuration is the same as the fourth characteristic configuration, in which the housing is provided with a lock means for preventing the housing and the fixture from being separated from each other, and an unlocking for releasing the separation preventing operation by the locking means. Means is provided, and the lock releasing means is operated in response to turning off the power switch by operating the operation tool. A sixth characteristic configuration is the fourth or fifth characteristic configuration, wherein the alarm output circuit is configured to output an alarm in response to an operation of turning off the power switch by the operation tool. .

[0010]

According to the first characteristic configuration of the present invention, when the anti-theft device is not used, the power switch is turned off to stop the supply of electric power to the alarm output circuit in the housing to prevent the theft. When using the anti-theft device, attach the case of the anti-theft device to the anti-theft object, then turn on the power switch to operate the anti-theft device by supplying power to the alarm output circuit inside the case. Let it start. If the body of the anti-theft device is removed from the anti-theft object without the proper method while the anti-theft device is operating, the state of the attachment state detection member changes, and the attachment state detection member The alarm output circuit outputs an alarm based on the information of.

When transporting the antitheft device at the time of shipment,
By turning off the power switch and stopping the power supply from the battery to the alarm output circuit, even if the anti-theft device vibrates during transportation, the alarm output circuit will be supplied with power from the battery and stolen. The protective device does not start operating. In addition, even if the anti-theft device is accidentally dropped when not in use, the alarm output circuit may be powered by the battery and the anti-theft device may start operating. There is no.

According to the second characteristic configuration of the present invention, the operated portion of the power switch is provided so as to be recessed from the surface of the housing, and the corners of the other object are the installation locations of the operated portion of the power switch of the housing. It is less likely that you will accidentally operate the power switch even if you touch the. According to the third characteristic configuration of the present invention, the anti-theft device is usually attached to the anti-theft object by connecting the attachment and the housing, and the enclosure of the anti-theft device is stolen by the attachment. When the fixture is connected to the housing when it is attached to the prevention target, the power switch is switched from the OFF state to the ON state in accordance with the connecting operation. In other words, the operation of the anti-theft device can be started at the same time only by connecting the attachment to the housing and attaching the housing to the anti-theft object.

According to the fourth characteristic configuration of the present invention, the rack portion at the tip of the operating tool is inserted into the housing, and the pinion gear provided in the housing is rotated to turn the power switch on. Switch to the cut state. In other words, the pinion gear, which is the target for turning off the power switch with the operating tool, is provided inside the housing, and the power switch cannot be turned off without a dedicated operating tool. The power switch can be turned off and operated by simply inserting the operation tool.

According to the fifth characteristic configuration of the present invention, when the housing of the anti-theft device is attached to the anti-theft object by the mounting tool, if the mounting tool is connected to the housing, the locking means provided on the housing. Prevents the housing and the attachment from coming off so that the housing and the antitheft object do not come off. When removing the case of the anti-theft device from the anti-theft object, insert the rack section at the tip of the operation tool into the case and turn on the power switch by turning the pinion gear provided in the case. The state is switched to the cut state, and the lock release means releases the separation preventing operation by the lock means so that the housing and the fixture can be separated from each other. In other words, by simply inserting the rack portion at the tip of the operating tool into the housing, the power switch can be turned off and the housing and the mounting tool can be detached, that is, the housing of the antitheft device can be removed from the antitheft object. .

According to the sixth characteristic configuration of the present invention, the alarm output circuit outputs an alarm when the operating tool is operated to turn off the power switch. As a result, it is possible to confirm whether or not the battery is in a usable state without requiring any special operation.

[0016]

According to the first characteristic structure, even if vibration is applied to the anti-theft device in which the power switch is in the off state, the anti-theft device does not start operating, so that battery power is wasted. There is no consumption, and no alarm is output by mistake. Therefore, the reliability of the anti-theft device can be improved. According to the second characteristic configuration,
In addition to the effect of the first characteristic configuration, since the power switch is unlikely to be operated by mistake due to contact with another object, there is almost no need to stop the operation of the antitheft device that has been accidentally operated, and it is possible to manage the antitheft device Such trouble can be reduced and the anti-theft device can be made convenient.

According to the third characteristic configuration, in addition to the effects of the first or second characteristic configuration, the theft can be stolen at the same time simply by connecting the attachment to the casing and attaching the casing to the antitheft object. The operation of the anti-theft device can be started, the operation of the anti-theft device can be simplified, and the anti-theft device can be made more convenient. According to the fourth characteristic configuration, in addition to the effect of the first, second, or third characteristic configuration, the power switch can be easily turned off from the outside of the housing while the power switch is turned off. When using the operation tool, the power switch can be turned off by a simple operation just by inserting the operation tool in the housing, so the operation can be simplified while maintaining high reliability of the anti-theft device. Therefore, the anti-theft device can be made more convenient.

According to the fifth characteristic configuration, in addition to the effect of the fourth characteristic configuration, the power switch is turned off and the casing and the attachment are simply inserted by inserting the rack portion at the tip of the operating instrument into the casing. Since the disengagement, that is, the case of the anti-theft device can be removed from the anti-theft object, the operation of the anti-theft device can be simplified and the anti-theft device can be made more convenient. According to the sixth characteristic configuration, in addition to the effects of the fourth or fifth characteristic configuration, it is possible to confirm whether or not the battery is in a usable state without requiring any special operation, so that it is possible to prevent theft. The operation of the device can be simplified and the anti-theft device can be made more convenient.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the antitheft device of the present invention will be described below with reference to the drawings. The plan view and FIG. 2 of FIG.
As shown in the side view of (b), a sensor tag 1 as an anti-theft device has a rectangular parallelepiped casing 2 and a wire unit having a function as a fixture for attaching the casing 2 to a product or the like which is an anti-theft object. 3 and 3. Wire unit 3
As shown in FIG. 3, lock pins 30 provided at both ends for insertion into and removal from the housing 2, wires 31 connecting the lock pins 30 to each other, and a part of the wires 31 and the lock pins 30. And an outer cover 32 for covering.

The lock pin 30 and the wire 31 are made of metal and have conductivity, and the lock pins 30 at both ends are also electrically connected. Also, near the tip of the lock pin 30,
An engagement recess 30a is formed to prevent the lock pin 30 from coming off the housing 2. Further, as shown in FIG. 3, a slight step is formed at the end of the outer cover 32 covering the lock pin 30, and when the lock pin 30 is inserted into the housing 2, it is shown in FIG. As described above, the stepped portion is set in the housing 2 so that the lock pin 30 is not exposed to the outside. As a result, it is possible to prevent the lock pin 30 from contacting another object charged with static electricity and damaging the electric circuit in the housing 2.

In the housing 2, as shown in FIG.
A lamp 20, a piezoelectric buzzer 21, a resonance antenna 22 including a coil, a capacitor and a resistor, and a resonance antenna 2
The antenna input circuit 23 that outputs a reception signal when 2 is in a receiving state, the wire unit input circuit 24 that outputs a wire disconnection signal when the wire unit 3 is not properly connected, and the reception from the antenna input circuit 23 A switching circuit 25 that outputs a control signal when a signal or a wire cutting signal from the wire unit input circuit 24 is input, an oscillation circuit 26 that starts pulse oscillation when a control signal from the switching circuit 25 is input, and a switching circuit 25. When the control signal from the counter is input, the counter 27 starts counting the number of oscillation pulses of the oscillation circuit 26 and outputs a count completion signal when the set count number is exceeded, and the switching circuit 25 when the count completion signal of the counter 27 is input. Maintain the state where the received signal or the wire cut signal is input. A latch circuit 28 for the counter 2
When the count completion signal of 7 is input, the LED lamp 20
Buzzer LE that lights up and sounds the piezoelectric buzzer 21
The D driver 29, a battery V that supplies power to each circuit in the housing 2, and a power switch 6 that turns on and off the power supply from the battery V to each circuit are provided.

The circuit having the above-mentioned configuration is used when the wire unit 3 is cut while the power switch 6 is in the ON state and the housing 2 is attached to a product such as an antitheft object by the wire unit 3, When the sensor tag 1 passes through an installation location of a pair of panel-shaped transmitters O as shown in FIG. 8 installed on both sides of the entrance of a store, the piezoelectric buzzer 21 housed in the housing 2 sounds, It is configured to output an alarm. As the oscillator O, one of the pair of panel-shaped ones described above may be installed on one side of the doorway, or may be installed on the floor surface of the doorway. Therefore, the wire unit 3 functions as an attachment state detection member for detecting the attachment state of the anti-theft object, and the LED lamp 2 in the circuit inside the casing 2 is used.
0, the piezoelectric buzzer 21, the wire unit input circuit 24, the switching circuit 25, the oscillation circuit 26, the counter 27, the latch circuit 28, and the buzzer / LED driver 29 serve as an alarm output circuit G that outputs an alarm based on the information of the wire unit 3. Function.

In the following case, the piezoelectric buzzer 21 will be used.
I will briefly explain the process until the sound begins. First, when the wire unit 3 and the housing 2 are not connected in series due to disconnection of the wire unit 3, the current flowing through the wire unit 3 is cut off, and the wire unit input circuit 24 detects it. . When the wire unit input circuit 24 detects interruption of energization of the wire unit 3,
A wire cutting signal is output to the switching circuit 25.

The switching circuit 25 sends a control signal to the oscillation circuit 26 and the counter 27 while receiving the wire cutting signal, and while receiving the control signal, the oscillation circuit 26 oscillates a pulse and the counter 27 oscillates. The number of oscillation pulses of the circuit 26 is counted. When the control signal stops, the oscillation circuit 26 stops pulse oscillation, the counter 27 stops counting, and resets the pulse count number. Each time the counter 27 completes counting the preset number of pulses, the counter 27 and the buzzer / LE
One pulse signal is sent to the D driver 29 as a count completion signal.

While receiving the count completion signal, the buzzer / LED driver 29 causes the piezoelectric buzzer 21 to sound and the LED lamp 20 to emit light. On the other hand, the latch circuit receives the count completion signal of the counter 27 and maintains the switching circuit 25 in the state of receiving the disconnection signal, whereby the switching circuit 25 continues to send the control signal to the oscillation circuit 26 and the counter 27. That is, the buzzer / LED driver 29 causes the piezoelectric buzzer 21 to sound and the LED lamp 20 to emit light after the counter 27 completes counting the set number of pulses after the switching circuit 25 receives the disconnection signal. As a result, if the disconnection signal is not continuously received for a certain period of time, the piezoelectric buzzer 2
1 and the LED lamp 20 do not operate to prevent malfunction due to noise or the like.

Further, once the counter 27 has sent the count completion signal, the switching circuit 25 continues to send the control signal regardless of the presence or absence of the disconnection signal from the wire unit input circuit 24, so that the power switch 6 is turned off. Until that time, the piezoelectric buzzer 21 continues to make an intermittent sound in synchronization with the count completion signal of the counter 27, and the LED lamp 20 continues to blink in synchronization with the count completion signal of the counter 27. When the sensor tag 1 passes through the location where the oscillator O is installed, the resonance antenna 22 generates an electromotive force due to the radio wave from the oscillator O, the antenna input circuit 23 detects the electromotive force, and the switching circuit 25 receives the received signal. Is output. The operation of each circuit after the switching circuit 25 receives the reception signal is similar to that in the case where the wire unit 3 is disconnected, and the description thereof will be omitted.

Next, the mounting structure of the wire unit 3 to the housing 2 will be described. As shown in FIGS. 3 to 7, the wire unit 3 includes the lock pin 30 of the wire unit 3.
Is a jack unit 4 provided in contact with the inner wall of the housing 2.
The two lock pin insertion holes 40a and 40b are attached to the housing 2. The jack unit 4 has a lock pin 3 inserted into the lock pin insertion hole 40a.
A substantially U-shaped lock spring 41 that engages with 0 to prevent it from coming off
And the lock pin 3 inserted in the lock pin insertion hole 40b.
A substantially U-shaped lock spring 42 that engages with 0 to prevent it from coming off
Are provided side by side, and both lock springs 41 and 42 function as a lock means H that prevents the wire unit 3 from being detached. Further, at the inner end of the housing 2 in the lock pin insertion hole 40a provided so as to penetrate the jack unit 4, a set that is slidable in the lock pin insertion hole 40a in the insertion / removal direction of the lock pin 30. A lever 48 is provided.

The lock springs 41 and 42 are provided at their bent portions 4
1c and 42c, the end portions 41d and 42d adjacent to each other inside the lock springs 41 and 42 are integrated with the circuits shown in FIG. 1 by being locked to the spring locking convex portion 49 protruding from the main body of the jack unit 4. It is fixed to the circuit board to be mounted and is connected to the wire unit input circuit 24. The other ends 41b and 42b of the lock springs 41 and 42 and the bent portion 4
As will be described later, protrusions 41a and 42 that engage with the engaging recesses 30a of the lock pin 30 are provided at intermediate portions between the lock pins 30 and 1c and 42c.
a is provided in the lock pin insertion holes 40a and 40b in a retractable state.

The lock springs 41 and 42 are made of metal and have conductivity, and electrically connect the lock pin 30 and the circuit board. Further, since the lock springs 41 and 42 are formed in a substantially U shape, both ends have elasticity in a direction toward or away from each other, and in a state where no force is applied to the lock springs 41 and 42, as shown in FIG. As shown, the protrusions 41a, 42a
Is in a state in which the lock pin insertion holes 40a, 40b are projected to almost the central portion. Therefore, when the engaging concave portion 30a of the lock pin 30 and the convex portions 41a, 42a are engaged,
The convex portions 41a and 42a are lock pin insertion holes 40a and 40b.
When pushed in the direction to retreat from the lock spring 4
1, 42 are urged toward the engagement side with the lock pin 30.

The set lever 48 is, as shown in FIG.
One surface is formed into a box shape with an open surface, and the protruding portion 43 is formed in a state of protruding from the inner wall of the lock pin insertion hole 40a into the space formed by the set lever 48 and the inner wall of the lock pin insertion hole 40a. ing. Further, at the bottom of the box-shaped set lever 48, there are formed two engaging portions 48a and 48b arranged in the sliding direction of the set lever 48 for engaging with a tip portion of a movement prevention spring 47 described later. ing. A coil spring 44a is inserted between the protrusion 43 and the inner wall of the set lever 48 to urge the set lever 48 to return toward the inlet side of the lock pin 40a. The other lock pin insertion hole 40b is closed on the back side, and the lock pin insertion hole 40b is provided with a coil spring 44b having one end fixed to the end on the back side.

A lock pin 30 to be described later is provided at a portion of the lock pin insertion hole 40a opposite to the lock pin insertion hole 40b.
A key insertion hole 45 for inserting the engagement releasing key K is provided. As shown in FIG. 11, in the key insertion hole 45,
A movement for preventing movement of the pinion gear 46, which is rotated with the insertion of the disengagement key K shown in FIG. 10 into the key insertion hole 45, and the set lever 48 provided in the lock pin insertion hole 40a. A blocking spring 47 is provided.

The pinion gear 46 is rotatably supported on the main body of the jack unit 4 in a direction in which its teeth extend perpendicularly to the insertion direction of the engagement releasing key K, and a part of the pinion gear 46 is inserted in the key insertion hole 45. Projection and other part is Jack unit 4
It is in a state of protruding to the outside of. Also, the pinion gear 4
6 is supported so as to be movable a little in the direction perpendicular to the paper surface in FIGS. 3 to 7, and in a state where the engagement releasing key K is not inserted into the key insertion opening 45, the key insertion opening 45 is provided.
The rack portion 5a of the slider 5, which will be described later, is located on the inner side.
I try not to mesh with.

The movement preventing spring 47 is formed of a thin metal rod so as to be elastically deformable. One end of the movement preventing spring 47 is fixed to one side of the opening side of the key insertion hole 45 to be the base end side, and the movement preventing spring 47 is rocked by the elastic deformation. It is free. The free end side end of the movement prevention spring 47 is pressed by the elastic action of the movement prevention spring 47 and either of the engaging portions 48a and 48b of the set lever 48 according to the position of the set lever 48 in the sliding direction. Engage with,
The set lever 4 is driven by the urging force of the coil spring 44a.
8 prevents the lock pin 30 from slidingly moving in the detaching direction. Note that FIG. 9 shows a state in which the engagement portion 48b is engaged. An intermediate portion between the base end side end and the free end side end of the movement prevention spring 47 is in a state of traversing the key insertion hole 45.

A rack portion 5a which meshes with the pinion gear 46 of the jack unit 4 in the state shown in FIG.
Further, a slider 5 as an operation tool shown in FIG. 12B is provided. The base portion 5b of the slider 5 is slidably engaged with a guide portion (not shown) provided on the inner wall of the housing 2, and the slider 5 has a direction indicated by an arrow A in FIG. The end portion of the elastically deformable extending portion 5c extending from the middle portion between the rack portion 5a and the base portion 5b is slidably movable to the housing 2.
As a configuration to be locked to the side, the extension portion 5c is elastically biased toward the inner side of the housing by the elastic action. Also, the rack portion 5a
As described later, the first pressing portion 5 that comes into contact with the end portion 41b of the lock spring 41 is located at the opposite side of the connection portion with the base portion 5b, as will be described later.
d, and the second portion abutting the end portion 42b of the lock spring 42
The holding portion 5e is formed, and the gap between the end portion 42b of the lock spring 42 and the second holding portion 5e is set to the lock spring 41.
It is designed to be longer than the distance between the end portion 41b and the first pressing portion 5d. In addition, in order to make the drawings easy to see, the extending portion 5c of the slider 5 is omitted in FIGS.

Lock pin insertion hole 4 of jack unit 4
A power switch 6 is installed at a position on the inner side of the housing 2 of 0a. The power switch 6 is a normally-off type switch, and the operated portion 6a of the power switch 6 is pushed by the set lever 48 of the jack unit 4 to shift from the off state to the on state.

Next, the engagement and disengagement of the wire unit 3 and the housing 2 will be described. First, when the wire unit 3 and the housing 2 are engaged with each other, the lock pins 30 of the wire unit 3 shown in FIG. One of them is inserted into the lock pin insertion hole 40b of the jack unit 4. When the lock pin 30 is inserted against the biasing force of the coil spring 44b provided in the lock pin insertion hole 40b, the lock spring 4 is inserted into the engaging recess 30a of the lock pin 30.
The convex portion 42a protruding into the lock pin insertion hole 40b of No. 2 is engaged, and the lock pin 30 is reliably prevented from moving in the releasing direction by the urging force of the coil spring 44b to maintain the engaged state.

With one of the lock pins 30 inserted in the jack unit 4, the other lock pin 30 is entangled in a product or the like, and then inserted into the lock pin insertion hole 40a of the jack unit 4. When the lock pin 30 is inserted into the lock pin insertion hole 40a, the tip of the lock pin 30 contacts the set lever 48. When the lock pin 30 is further inserted while pushing the set lever 48, the lock spring 4 is inserted into the engaging recess 30a of the lock pin 30, as shown in FIG.
The convex portion 41a protruding into the first lock pin insertion hole 40a is engaged to prevent the lock pin 30 from moving in the engagement releasing direction. Set lever 4 with this lock pin 30
As shown in FIG. 9, from the state in which the distal end portion of the movement preventing spring 47 on the free end side is engaged with the engaging portion 48a of the set lever 48 by the pushing operation of 8, as shown in FIG. The state of the set lever 48 is changed to a state in which the set lever 48 is engaged, and the inner end portion 48c of the housing 2 of the set lever 48 pushes the operated portion 6a of the power switch 6 to operate each circuit in the housing 2 shown in FIG. Energize to.

The wire unit 3 and the wire unit input circuit 24 in the housing 2 are connected to the lock pin 30 as described above.
Engaging concave portion 30a and the convex portions 41 of the lock springs 41 and 42
It is electrically connected by the engagement of a and 42a. next,
When releasing the engagement between the wire unit 3 and the jack unit 4 from the state shown in FIG. 5, the engagement releasing key K shown in FIG. 10 is used. The disengagement key K is the first rack portion K that meshes with the pinion gear 46 of the jack unit 4.
1 and a second rack portion K2 are provided at both ends. These rack portions K1 and K2 have different insertion depths into the key insertion holes 45 of the jack unit 4, and are different from the insertion depth of the first rack portion K1 by the second depth. The length of the rack portion K2 is set so that the insertion depth of the rack portion K2 becomes slightly deeper. Therefore, the rotation amount of the pinion gear 46 is different between when the first rack portion K1 is inserted into the key insertion hole 45 and when the second rack portion K2 is inserted into the key insertion hole 45.

As shown in FIG. 11, when the first rack portion K1 on the side of shallow insertion depth is inserted into the key insertion hole 45, the first rack portion K1 lifts the pinion gear 46 and meshes with the rack portion 5a of the slider 5. At the same time, the first rack portion K1 and the pinion gear 46 mesh with each other, and the first rack portion K
The pinion gear 46 rotates with the insertion of 1. By the rotation of the pinion gear 46, the slider 5 having the rack portion 5a meshing with the pinion gear 46 moves in the direction of arrow B in FIGS. 6 and 11. At this time, the amount of movement of the slider 5 makes contact with the first pressing portion 5d of the slider 5 and the end portion 41b of the lock spring 41, but still makes contact with the second pressing portion 5e and the end portion 42b of the lock spring 42. The length of the first rack portion of the disengagement key K is set so that the engagement release key K is not engaged. In FIG. 11, the position of the pinion gear 46 is shown when it is lifted by the first rack portion K1.

Further, the first rack portion K1 of the disengagement key K
When is inserted into the key insertion hole 45, the movement prevention spring 47 provided in a state of traversing the key insertion hole 45 is pressed, and the movement prevention spring 47 is pressed against the wall portion of the key insertion hole 45. As a result, the end portion of the movement preventing spring 47 on the free end side swings, and the engagement between the end portion on the free end side and the engaging portion 48a of the set lever 48 is released.

With the sliding movement of the slider 5, the first
When the pressing portion 5d pushes the end portion 41b of the lock spring 41,
As shown in FIG. 6, the convex portion 41a of the lock spring 41 swings to a state of retracting from the lock pin insertion hole 40a. In this way, the engagement between the engaging concave portion 30a of the lock pin 30 and the convex portion 41a of the lock spring 41 is released. As a result, the lock pin 30 inserted into the lock pin insertion hole 40a is pushed out by the urging force of the coil spring 44a inserted into the set lever 48, and the power switch 6 shifts from the on state to the off state. The power supply to each circuit in 2 is stopped. Therefore, the slider 5 functions as a cutting operation member that cuts and operates the power switch 6.

The timing at which the power switch 6 shifts from the ON state to the OFF state is slightly delayed from the timing at which the engagement recess 30a of the lock pin 30 and the projection 41a of the lock spring 41 are disengaged and separated from each other. The lock pin 30 is operated by operating the disengagement key K.
Since the piezoelectric buzzer 21 sounds for a moment when the lock pin insertion hole 40a is pulled out, the battery V of the battery V can be checked simultaneously with the pulling operation. When the lock pin 30 is removed from the lock pin insertion hole 40a and the lock pin 30 inserted in the lock pin insertion hole 40b is further removed for replacement of the wire unit 3 or the like, an engagement release key is used. The second rack portion K2 of K is inserted into the key insertion hole 45.

Since the second rack portion K2 has a deeper insertion depth than the first rack portion K1, the slide movement amount of the slider 5 in the direction of arrow B in FIG. 7 when the second rack portion K2 is inserted is The second pressing portion 5e of the slider 5 and the end portion 42b of the lock spring 42, which are larger than when the first rack portion K1 is inserted and which did not abut when the first rack portion K1 is inserted, abut. . When the second pressing portion 5e pushes the end portion 42b of the lock spring 42, as shown in FIG. 7, the convex portion 42a of the lock spring 42 swings so as to retract from the lock pin insertion hole 40b. In this way, the engagement between the engaging concave portion 30a of the lock pin 30 and the convex portion 42a of the lock spring 42 is released. As a result, the lock pin 30 inserted into the lock pin insertion hole 40b is pushed out by the biasing force of the coil spring 44b.

Therefore, the slider 5 functions as a lock releasing means I for releasing the separation preventing operation of the lock springs 41 and 42 which prevent the housing 2 and the wire unit 3 from separating from each other.

[Other Embodiments] Other embodiments will be listed below. In the above-described embodiment, the sensor tag 1 is of the type that is attached to the product targeted for theft prevention with the wire unit 3, but the plan view of FIG.
As shown in the side view of (b), there is also a type that is attached to a product with a pin 103. In this type, for example, when the target product is clothing, the pin 103 is pointed on the cloth,
The tip of the pin 103 is inserted into the housing 2 and attached. Figure 1
The sensor tag 1 shown in FIG. 3 accommodates a circuit having the configuration shown in FIG.

The circuit of FIG. 14 is similar to the circuit of FIG. 1 of the above-described embodiment, except that it functions as an attachment state detecting member instead of the wire unit 3 and as an attachment to an antitheft object. The only difference is that the pin 103 and the detection switch S that are also held are connected, and if the pin 103 is forcibly pulled out when the power switch 6 is in the ON state, it is different from when the wire unit 3 is disconnected in the above-described embodiment. Works the same. The other operations are the same as those in the above-mentioned embodiment, and the description thereof will be omitted.

The structure for attaching the pin 103 to the housing 2 will be described below. The pin 103 is, as shown in FIG.
Is attached to the housing 2 in a state of being inserted into the pin insertion hole 140 of the jack unit 104 provided in contact with the inner wall of the. The jack unit 104 includes
As shown in FIG.
3 is provided with a hook-like lock spring 141 as a locking means H that engages with the lever 3 to prevent it from coming off. A spring holding member 148 is provided at a rear side of the lock spring 141 in the insertion direction of the pin 103.
Is provided.

The lock spring 141 is made of metal and has elasticity in a direction in which both end portions 141a and 141b approach or separate from each other. The lock spring 141 is locked at its bent portion 141c to the spring locking convex portion 149 protruding from the main body of the jack unit 104, and the end 141a of the lock spring 141 is fixed to the main body of the jack unit 104. At the intermediate portion between the other end portion 141b of the lock spring 141 and the bent portion 141c, the pin 1
A projection 141d that engages with the engagement recess 103a of No. 03 is provided in the pin insertion hole 140 in a retractable state.

As shown in FIG. 18, the spring holding member 148 has a shape in which cylinders having different diameters are stacked in two stages, and the pin 10
A flange 148a is formed at the rear end in the insertion direction. Inside the spring holding member 148, a coil spring 148b having one end fixed to the inner surface of the collar 148a,
Metal plate 1 holding the other end of the coil spring 148b
48c and the coil spring 1 in the metal plate 148c
A coil spring 148d having one end fixed to a surface opposite to the surface holding the end of 48b;
A resin plate 148e that holds the other end of 48d is provided. A central portion of the metal plate 148c is cut out in a circular shape to allow passage of the tapered portion 103b at the tip of the pin 103, and the resin plate 148e supports the tapered portion 103b at the tip of the pin 103. The central part is cut out in a circle. Further, the metal plate 148c is used for the spring holding member 14
8 protrudes through the side wall of the spring holding member 14
The side wall portion 8 is partially cut off to allow the protruding portion to move in the insertion direction of the pin 103.

On the mounting surface 104a of the spring holding member 148 in the main body of the jack unit 104, two divided electrode terminals 104b and 104c are formed. The electrode terminals 104 and 104c are respectively connected to the wire unit input circuit 24 provided in the housing 2, and the metal plate 1
48c and the electrode terminals 104b and 104c constitute the detection switch S in FIG. Pin insertion hole 140
A set button pin insertion hole 130 extending in a state of penetrating the jack unit 104 in a direction perpendicular to the pin insertion direction of the pin insertion hole 140 is provided in the adjacent portion of. A set button pin 131 slidable in the set button pin insertion hole 130 is arranged in the set button pin insertion hole 130, and a set button pin 131 is set in the opening of the set button pin insertion hole 130 on the inner side end of the housing 2. A metal and spring-shaped contact switch 132, which is oscillated by being pushed by the button pin 131, is provided with one end fixed to the jack unit 104.

The set button pin 131 is shown in FIG.
20 is a cross-sectional view taken along line EE in FIG.
As shown in (b), the operated portion 131a that is pushed from the outside of the housing 2, the positioning portion 131b that positions the set button pin 131 at a specific position within the set button pin insertion hole 130, and the set button pin. The spring storage portion 131c stores a coil spring 144 that urges 131 to return in a direction opposite to the insertion direction of the set button pin 131. As shown in FIG. 19, the spring accommodating portion 131c is formed in a box shape with one surface open, and is inserted into the space defined by the spring accommodating portion 131c and the inner wall of the set button pin insertion hole 130. The protruding portion 143 is formed in a state of protruding from the inner wall of the insertion hole 130.
Further, at the bottom of the box-shaped spring accommodating portion 131c, there are two engaging portions 131e, 1e arranged in the sliding direction of the set lever 48 for engaging with a tip portion of a movement preventing spring 147 described later.
31f is formed.

The coil spring 144 is the spring housing portion 1.
It is disposed between the inner wall of the outer side of the housing 2 in 31c and the projecting portion 143, and urges the set button pin 131 to return in the direction opposite to the insertion direction of the set button pin 131 as described above. . Positioning portion 131b of the set button pin 131
The positioning protrusion 131d is formed to have elasticity so that it can move in and out in the protruding direction.
An engagement recess 130a that engages with the positioning projection 131d is provided on the inner wall of the set button pin insertion hole 130 in a state in which 31 is pushed inwardly of the housing 2. In the state where the set button pin 131 is pushed to the inner side of the housing 2, the end portion of the set button pin 131 on the inner side of the housing 2 contacts the contact switch 132 and swings the contact switch 132. Due to this swing, the free end side of the contact switch 132 contacts the circuit board, and the two electrode terminals 106a and 106b formed on the circuit board.
Short circuit. As a result, each circuit in the housing 2 is energized from the battery V, and the contact switch 13
The two and two electrode terminals 106a and 106b correspond to the power switch 6 in FIG.

A key insertion hole 145 for inserting an engagement releasing key K of the pin 103, which will be described later, is provided at a position of the set button pin insertion hole 130 opposite to the pin insertion hole 140. In the key insertion hole 145, the movement of the pinion gear 146 rotated by the insertion of the disengagement key K into the key insertion hole 145 and the movement of the set button pin 131 provided in the set button pin insertion hole 130 are performed. A movement blocking spring 147 for blocking is provided. These configurations are
The configuration is similar to that shown in FIG. 11 of the above embodiment, and detailed illustration is omitted.

The pinion gear 146 is rotatably supported on the body side of the jack unit 104 in a direction in which its teeth extend perpendicularly to the insertion direction of the engagement releasing key K, and
Some of them are projected into the key insertion hole 145, and some of them are projected to the outside of the jack unit 104. The movement prevention spring 147 is formed of a thin metal rod so as to be elastically deformable. One end of the movement prevention spring 147 is fixed to one side of the key insertion hole 145 to serve as the base end side, and the movement prevention spring 147 is swingable by elastic deformation. The end of the movement preventing spring 147 on the free end side has a set button pin 131.
Set button pin 1 according to its position in the sliding direction
The set button pin 148 is slidably moved to the outer side of the housing 2 by engaging with one of the engaging portions 131e and 131f of 31 in a state of being pressed by the elastic action of the movement prevention spring 147, and by the biasing force of the coil spring 144. To prevent you from doing so. Note that FIG. 19 shows a state in which the engagement portion 131f is engaged. An intermediate portion between the base end side end and the free end side end of the movement prevention spring 147 is in a state of crossing the key insertion hole 145.

At a location on the inner side of the housing 2 of the jack unit 104, the rack portion 10 that meshes with a portion of the pinion gear 146 protruding outward from the jack unit 104.
21 (a), 21 (b) and 21 with 5a
A slider 105 shown in (c) is provided.

The slider 105 has a base portion 105b slidably engaged with a guide portion (not shown) provided on the inner wall of the housing 2, and is indicated by an arrow P in FIGS.
Can be slidably moved in the direction shown by, that is, in the insertion / removal direction of the engagement releasing key K, and the rack portion 105a and the base portion 10
5b, the tip portion of the elastically deformable extending portion 105c extending from the middle portion of the extending portion 5b is locked to the housing 2 side. I am doing it. 15 to 17, the extension portion 105c is omitted for easy understanding of the drawings.

Next, the engagement and disengagement between the pin 103 and the housing 2 and the switching on / off of energization from the battery V to each circuit in the housing 2 will be described. First, when engaging the pin 103 and the housing 2, the pin 1 shown in FIG.
From the disengaged state of 03, insert the pin 103 into the clothing material F or the like of the clothing, and as shown in FIG.
03 is inserted into the pin insertion hole 140 of the jack unit 104. When the pin 103 is inserted against the biasing force of the coil springs 148b and 148d provided in the pin insertion hole 140, the protrusion 141d protruding into the pin insertion hole 140 of the lock spring 141 is inserted into the engagement recess 103a of the pin 103.
Are engaged, and the pin 103 is prevented from moving in the releasing direction by the urging force of the coil springs 148b and 148d to maintain the engaged state.

During insertion until the engaging recess 103a of the pin 103 and the convex 141d of the lock spring 141 are engaged, the taper 103 at the tip of the pin 103 contacts the resin plate 148e on the jack unit 104 side. When the pin 103 is further inserted against the biasing force of the coil springs 148b and 148d, the metal plate 148c moves inwardly of the housing 2 and is divided into two parts formed on the mounting surface 104a of the spring holding member 148. The contacted electrode terminals 104b and 104c are short-circuited. In this state, the detection switch S shown in FIG. 14 shifts from the off state to the on state. At the time when the metal plate 148c short-circuits the two divided electrodes, the coil spring 148d still has a contraction margin, and the pin 103 is further inserted so that the pin 103 and the lock spring 141 are engaged with each other. This completes the attachment of the sensor tag 1 to the product, and then the sensor tag 1 is activated.

To start the operation of the sensor tag 1, a power source setting jig D as shown in FIGS. 22 (a) and 22 (b) is used. When the operated portion 131a of the set button pin 131 of the jack unit 104 is pushed inward by the protruding pin D1 of the power setting jig D, the set button pin 13
The end 131g on the inner side of the housing 2 of 1 contacts the contact switch 132 and swings the contact switch 132. Due to this swinging, the end portion of the contact switch 132 on the free end side contacts the circuit board, and shorts the two electrode terminals 106a and 106b on the circuit board. As a result, energization from the battery V to each circuit in the housing 2 is started.
When the set button pin 131 is not pushed in, the operated portion 131a, which is the end of the set button pin 131 on the outer side of the housing 2, has the set button pin insertion hole 130.
The spring accommodating portion 131c of the set button pin 131 is located at a position slightly recessed from the outer side opening of the housing 2 of
A positioning portion 130b that abuts on is formed on the inner wall of the set button pin insertion hole 130.

When the set button pin 131 is pushed, the tip of the movement preventing spring 147 on the free end side is moved.
From the state in which the set button pin 131 is engaged with the engaging portion 131e, as shown in FIG.
The state of engaging with the engaging portion 131f of 31 is switched.
At the position where the set button pin 131 swings the free end side of the contact switch 132 toward the circuit board, the coil spring 144 is compressed and the set button pin 1
Although it acts to push back 31 to the outside of the housing 2, the set button pin is engaged by the free end side tip of the movement preventing spring 147 and the engaging portion 131f of the set button pin 131 as described above. The sliding movement of the set button pin 131 is prevented, and the sliding movement of the set button pin 131 is also prevented by the engagement of the positioning convex portion 131d of the set button pin 131 and the engagement concave portion 130a of the set button pin insertion hole 130. .

Next, from the state shown in FIG.
When the engagement between the jack unit 104 and the jack unit 104 is released, the engagement release key K shown in FIG. 10 is used as in the above embodiment. In the state shown in FIG. 16, when the second rack portion K2 is inserted into the key insertion hole 145, the second rack portion K2 and the pinion gear 146 mesh with each other, and the pinion gear 146 rotates as the second rack portion K2 is inserted. . Due to the rotation of the pinion gear 146, the slider 105 having the rack portion 105a that meshes with the pinion gear 146 is moved to the position shown in FIG.
In 7, the position moves from the position indicated by the alternate long and short dash line to the position indicated by the solid line. Further, when the second rack portion K2 of the disengagement key K is inserted into the key insertion hole 145, the movement prevention spring 147 which is provided in a state of traversing the key insertion hole 145 is pressed to move the movement prevention spring 147. Is pressed against the wall of the key insertion hole 145. As a result, the free end side end portion of the movement prevention spring 147 swings, and the free end side end portion and the engagement portion 131f of the set button pin 131 are disengaged.

The slider 105 is brought into contact with the first pressing portion 105d which comes into contact with the end portion 141b of the lock spring 141 as the slider 105 slides and the inside end portion of the housing 2 of the set button pin 131. And a second pressing portion 105e that is provided, as shown in FIG.
The first pressing portion 105d is the end portion 141 of the lock spring 141.
When b is pushed, the convex portion 141d of the lock spring 141 swings to a state of retracting from the pin insertion hole 140. In this way, the engagement between the engaging concave portion 103a of the pin 103 and the convex portion 141d of the lock spring 141 is released, and the pin 103 is moved to the outside of the housing 2 by the urging force of the coil springs 148b and 148d of the spring holding member 148. Pushed out. Therefore, the slider 105 functions as a lock release means I for releasing the lock-off prevention operation of the lock spring 141 that blocks the lock-out of the housing 2 and the pin 103.

On the other hand, the second pressing portion 1 of the slider 105
When 05e pushes the end of the set button pin 131 on the inner side of the housing 2, the set button pin 131 moves to the outer side of the housing 2, and the positioning projection 131d of the set button pin 131 is moved.
And a recess 130a for engaging the set button pin insertion hole 130
Is disengaged. As a result, the spring storage portion 131c
The return urging force of the coil spring 144 in the inside causes the set button pin 131 to return to the state before the operation portion 131a is pushed in, the contact switch 132 is separated from the two terminals on the circuit board, and the battery V is connected to the casing. The power supply to each circuit in 2 is stopped. Therefore, the slider 105
It functions as a switching operation member for switching the power switch 6.

The timing at which the energization is stopped is configured to be slightly behind the timing at which the engagement concave portion 103a of the pin 103 and the convex portion 141d of the lock spring 141 are disengaged and separated from each other. When the pin 103 is pulled out from the pin insertion hole 140 by operating the key K,
Since the piezoelectric buzzer 21 sounds for a moment, the battery check of the battery V can be performed at the same time as this removal operation.

In the above-described embodiment and other embodiments, the lock pin 30 or the pin 103 as a member for detecting the mounting state is used.
Is also used as a fixture for attaching the housing 2 to an antitheft object. However, the operated portion of the switch as the attachment state detecting member is provided in a protruding state from the housing 2, and the operated portion is provided. May be configured to be used in a state of being in contact with the anti-theft object, and the attachment state detecting member may not have a function as a fixture for attaching the housing to the anti-theft object. In this case, the case may be attached to the anti-theft object with an adhesive tape or the like.

In the above embodiment and other embodiments, the alarm output circuit sounds the piezoelectric buzzer 21 to output an alarm. However, the alarm output circuit is configured to output a radio signal as an alarm, and when the radio signal is received. In addition, a device for issuing a warning may be separately provided.

In the above-described another embodiment, the engagement of the pin 103 and the disconnection operation of the power switch 6 by the set button pin 131 are performed at different timings, and the piezoelectric buzzer 21 is operated.
Although the battery can be checked by temporarily sounding, the sensor for detecting the switching operation of the power switch 6 is provided, and the piezoelectric buzzer 21 can be temporarily sounded based on the detection information of the sensor. good.

In the above embodiment, the engaging portion 4 of the set lever 48 that pushes and operates the operated portion 6 a of the power switch 6.
8a and 48b are provided on one side of the set lever 48 in plan view, but the engaging portions 48a and 48b are provided point-symmetrically with respect to the center of the set lever 48 in plan view,
When inserting the set lever 48 into the lock pin insertion hole 40a, it is not necessary to confirm the insertion direction.

In the above-described embodiment, the lock pin 30 is prevented from coming off by the engagement between the engaging recess 30a of the lock pin 30 and the lock springs 41 and 42 that are the lock means H. The brake shoe 30 may be arranged so that it can be held.

In the above-mentioned another embodiment, the spring holding member 14
The coil spring 148d of 8 allows the metal plate 148
Although c has been made flexible after it comes into contact with the electrode terminals 104b and 104C, the function of the coil spring 148d may be integrated by making the metal plate 148c itself elastic.

In the above-described another embodiment, the set button pin 131 is configured to return to the state before being pushed in by the return urging force of the coil spring 144, but the slider 10 is not provided with the coil spring 144.
You may make it return by only pushing operation of 5.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram according to an embodiment of an anti-theft device of the present invention.

FIG. 2 is an external view according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of essential parts according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view of essential parts according to the embodiment of the present invention.

FIG. 6 is a cross-sectional view of a main part according to the embodiment of the present invention.

FIG. 7 is a cross-sectional view of essential parts according to the embodiment of the present invention.

FIG. 8 is an external perspective view of a transmitter according to an embodiment of the present invention.

FIG. 9 is a perspective view of a main part according to the embodiment of the present invention.

FIG. 10 is an enlarged view of an engagement releasing key according to the embodiment of the present invention.

FIG. 11 is a cross-sectional view of essential parts according to the embodiment of the present invention.

FIG. 12 is an enlarged view of a slider according to an embodiment of the present invention.

FIG. 13 is an external view of another embodiment of the present invention.

FIG. 14 is a schematic configuration diagram according to another embodiment of the present invention.

FIG. 15 is a sectional view of an essential part according to another embodiment of the present invention.

FIG. 16 is a sectional view of an essential part according to another embodiment of the present invention.

FIG. 17 is a cross-sectional view of essential parts according to another embodiment of the present invention.

FIG. 18 is a sectional view of an essential part according to another embodiment of the present invention.

FIG. 19 is a perspective view of a main part according to another embodiment of the present invention.

FIG. 20 is an enlarged view of a set button pin according to another embodiment of the present invention.

FIG. 21 is an enlarged view of a slider according to another embodiment of the present invention.

FIG. 22 is an enlarged view of a jig for a power supply set according to another embodiment of the present invention.

[Explanation of symbols]

 2 Housing 3,103 Mounting state detection member 5,105 Cutting operation member 5a, 105a Rack part 6 Power switch 6a Operated part 46,146 Pinion gear G Alarm output circuit H Locking device I Lock releasing device K1, K2 Rack part K Operation tool V battery

Claims (6)

[Claims] 1. A mounting state detection member (3, 103) for detecting a mounting state of an antitheft object in a state of being exposed to the outside of the casing (2), the casing (2). Inside the member for detecting the mounting state (3, 1
And an alarm output circuit (G) that detects that the casing (2) has been removed from the antitheft object based on the information of (03) and outputs an alarm when the removal is detected, and the alarm output circuit (G). An anti-theft device including a battery (V) for driving an electric power source, comprising: a power switch (6) for turning on / off power supply between the battery (V) and the alarm output circuit (G). Anti-theft device. 2. The antitheft device according to claim 1, wherein the operated portion (6a) of the power switch (6) is provided so as to be recessed from the surface of the housing (2). 3. The attachment state detecting member (3, 103)
Is composed of a fixture connected to the casing (2), and the power switch (6) is switched from the OFF state to the ON state with the connection of the fixture to the casing (2). The antitheft device according to claim 1 or 2, wherein the antitheft device is configured according to claim 1. 4. A cutting operation member (5, 105) for cutting and operating the power switch (6) in the housing (2),
A pinion gear (46, 1) meshing with a rack portion (5a, 105a) provided on the cutting operation member (5, 105).
46) is provided, and the pinion gears (46, 146) thereof are rotationally driven by an operating tool (K) having a rack portion (K1, K2) at the tip thereof to turn off the power switch (6). The antitheft device according to claim 1, 2 or 3, which is configured to perform. 5. A lock means (H) for preventing the housing (2) from separating from the fixture, and a lock for releasing the separation preventing operation by the locking means (H) on the housing (2). And a lock release means (I), which is configured to operate the lock release means (I) when the power switch (6) is turned off by operating the operation tool (K). The antitheft device according to claim 4. 6. The alarm output circuit (G) is configured to output an alarm in response to an operation of turning off the power switch (6) by the operation tool (K).
Or the antitheft device as described in 5.