JP2953916B2 - Anti-theft detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing type oscillating type which is urged to return to a projecting position protruding from a contact surface of the anti-theft object to a housing which is mounted in contact with the anti-theft object. The present invention relates to a theft prevention detector provided with a switch having an operated part.

[0002]

2. Description of the Related Art An anti-theft device provided with such an anti-theft detecting device is used in a state in which it is brought into contact with an anti-theft object such as a product displayed at a store, for example.
Whether or not the anti-theft device has been removed from the anti-theft object is detected by the anti-theft detector, and an alarm sound or the like is emitted. That is, as shown in FIG. 24, for example, the anti-theft device 1 such as a compact disc displayed at a store is protected from shoplifting.
00 is provided in the case 101, and the antitheft object E is inserted into the case 101 so as to abut on the antitheft device 100 and used (for example, Japanese Utility Model Application No. No. 11054). At this time, in order to detect whether the anti-theft device has been removed from the anti-theft object, the anti-theft device returns to a protruding position protruding from the contact surface of the anti-theft object as a detection device for the anti-theft device. Although a switch provided with a biased swing type operated portion is provided, the conventional operated portion is configured to swing only to one side from the protruding position as shown in FIG. Was.
In the drawing, reference numeral 3 'denotes a conventional switch provided with the operated portion 3a', and 102 denotes a speaker for generating an alarm sound.

[0003]

Therefore, since the conventional operated portion is configured to swing only to one side from the projecting position, the operated portion swings in a direction other than that direction. There is a problem that the anti-theft object cannot be moved in any direction. That is, as shown in FIG. 25, in order to insert the anti-theft object E into the case 101, move the anti-theft object E in the f ₁ direction, and take out the anti-theft object E from the case 101. Although the moving antitheft object E to f ₂ direction movement, if there is unevenness in the abutment of the theft prevention target object E (lower surface), taking out the theft prevention target object E from the case 101 to (f ₂ direction At this time, when the operated portion 3a 'is caught by the unevenness and the anti-theft object E cannot be taken out, or when the anti-theft object E is forcibly taken out,
There is a problem that the operated part 3a 'is inadvertently damaged. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a detection device for anti-theft that is appropriately operated with respect to movement of an anti-theft object in various directions. .

[0004]

The anti-theft detecting device according to the present invention is mounted on a housing which is attached to the anti-theft object in a state where the anti-theft object is in contact with the anti-theft object. A switch provided with an oscillating operated portion that is biased to return is provided. The first characteristic configuration is that the switch is capable of oscillating in at least two opposite directions from a protruding position. An operated part configured, an elastic part for urging the operated part to return to a projecting position,
At least two opposite directions of the operated part from the projecting position
And a pair of electrode portions that switch between an energized state and a non-energized state in conjunction with a swinging operation in any one of the directions . A second characteristic configuration is that the operated portion has a swing axis at both end sides of the operated portion, and the swing shaft on a side closer to an action point of the biasing force applied to the operated portion. The point is that it swings around the core. A third characteristic configuration is that the operated portion is configured to be swingable in a plurality of directions including at least two opposing directions, and a plurality of protrusions for projecting into the abutment prevention object on the contact surface. Is provided in a state surrounding the periphery of the operated portion.

[0005]

According to the first characteristic configuration of the present invention, the operated portion is configured to be swingable in a plurality of directions including at least two opposite directions from the projecting position, so that the object to be stolen is opposed to the two directions. (e.g., e _1, e ₂ direction in FIG. 21) be moved to, the operation unit is swung in response to pressing state of the theft prevention target object (moving state). Also, the protrusion of the operated portion
One of at least two opposite directions from the position
The electrode section is configured to switch between an energized state and a non-energized state in conjunction with a swing operation in the direction of .
According to the second characteristic configuration, the swing shaft center is provided at both ends of the operated portion, and the swing shaft center on the side near the point of application of the biasing force applied to the operated portion is centered. Due to the swing, the operated portion can switch between the energized state and the non-energized state with the radius from the swing axis to the other end of the operated portion as a radius. According to the third characteristic configuration, when the anti-theft device is attached to an anti-theft object such as a cardboard box,
A plurality of protrusions are provided on the contact surface of the anti-theft object so as to surround the operated part and can be inserted into the anti-theft object and attached to the anti-theft object. This makes it possible to detect a theft preparatory act of inserting a thin plate-like foreign object such as a ruler between objects to prevent the operated portion from projecting from the contact surface. In other words, when a thin plate-like foreign object is inserted between the anti-theft device and the anti-theft object, the foreign object first hits a plurality of protrusions and stops, and when the foreign object is further inserted, the foreign object is removed. The operated portion protrudes from the contact surface by riding on the plurality of protrusions.

[0006]

According to the first characteristic configuration, the operated portion swings in accordance with the pushed state (moving state) of the anti-theft object, so that the operated part is suitable for the movement of the anti-theft object in various directions. It has been possible to provide a theft-preventing detector which can be operated at a high speed. Further , the protruding position of the operated portion
One of at least two opposite directions from
Since the electrode unit is configured to switch between an energized state and a non-energized state in conjunction with the swinging operation in the direction ,
The switching operation between the energized state and the non-energized state of the electrode portion can be accurately performed by the swing operation of the operated portion. According to the second characteristic configuration, the energized state and the non-energized state can be switched by using the radius from the pivot axis to the other end of the operated portion as a radius, so that the operated portion can be designed to be small. It has arrived. According to the third feature configuration, a theft preparatory act of inserting a foreign object so that the operated portion does not protrude from the contact surface can be detected. It has become possible to reliably detect whether or not an object has been removed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 2, the sensor tag 1 as the anti-theft device is configured such that the upper surface (contact surface) 2 c of the housing 2 contacts the anti-theft object E and is attached. FIG.
FIG. 2A is a perspective view of the sensor tag 1, and FIG.
Indicates the back surface 2n of the sensor tag 1. The sensor tag 1 is provided with a switch 3 having a swingable operated portion 3a which is urged to return to a projecting position protruding from the contact surface 2c, and the switch 3 is configured to swing the operated portion 3a. Since the switch 3 is turned ON / OFF by operation, the operated portion 3a of the switch 3 is swung by the presence or absence of the anti-theft object E, and the switch 3 is turned ON / OFF. It is configured to be able to detect whether or not it has been removed from the anti-theft object E.

As shown in FIG. 1, an LED lamp (chip LED) 20, a piezoelectric buzzer 21, a resonance antenna 22 composed of a coil, a capacitor and a resistor, and a resonance antenna 22 are provided in a housing 2 of the sensor tag 1. An antenna input circuit 23 that outputs a reception signal when a reception state is set; a switch input circuit 24 that outputs an OFF signal indicating the state when the switch 3 is turned off;
From the switch or OFF from the switch input circuit 24
A switching circuit 25 that outputs a control signal when a signal is input, an oscillation circuit 26 that starts pulse oscillation when a control signal from the switching circuit 25 is input, and an oscillation circuit 26 that starts pulse oscillation when a control signal from the switching circuit 25 is input
The counter 27 that starts counting the number of oscillation pulses of the counter 27 and outputs a count completion signal when the count exceeds a set count, and the reception signal or the OFF signal is input to the switching circuit 25 when the count completion signal of the counter 27 is input. Circuit 28 and a counter 27
Buzzer / LED that turns on the LED lamp 20 and sounds the piezoelectric buzzer 21 when the count completion signal of
A driver 29, a flat button battery V for supplying power to each circuit in the housing 2, and a power switch 6 for turning on and off the power supply from the button battery V to each circuit are provided.

[0009] The circuit having the above-described configuration is used when the switch 3 is turned off while the power switch 6 is turned on and operated.
When the sensor tag 1 passes through a place where a pair of panel-shaped transmitters O as shown in FIG. 20 are installed on both sides of a doorway of a store, for example, the piezoelectric buzzer 21 housed in the housing 2 sounds. Is configured. In FIG. 2, 10
Is an opening for emitting sound from the piezoelectric buzzer 21 to the outside of the housing 2.

Hereinafter, a process until the piezoelectric buzzer 21 starts sounding will be briefly described. When the sensor tag 1 attached to the anti-theft object E so that the switch 3 is turned on and set to the operating state (the switch 6 is turned on) is removed from the anti-theft object E, the switch 3 is turned off. The switch input circuit 24 detects the OFF state. The switch input circuit 24 turns off the switch 3.
When the state is detected, the OFF state is supplied to the switching circuit 25.
Output a signal.

The switching circuit 25 sends a control signal to the oscillation circuit 26 and the counter 27 while receiving the OFF signal from the switch input circuit 24, and the oscillation circuit 26 performs pulse oscillation while receiving the control signal. , The counter 27 counts the number of oscillation pulses of the oscillation circuit 26.
Then, when the control signal stops, the oscillation circuit 26 stops the pulse oscillation, the counter 27 stops counting, and resets the pulse count. The counter 27 sends one pulse signal as a count completion signal to the latch circuit 26 and the buzzer / LED driver 29 each time the counting of the preset number of pulses is completed.

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 28 receives the count completion signal of the counter 27, and maintains the switching circuit 25 in the state of receiving the OFF signal, whereby the switching circuit 25 continues to send control signals to the oscillation circuit 26 and the counter 27.
That is, after the switching circuit 25 receives the OFF signal, the buzzer / LED driver 29 completes the counting of the set number of pulses after the switching circuit 25 receives the OFF signal.
1 and the LED lamp 20 emits light. Thus, the piezoelectric buzzer 21 and the LED lamp 20 do not operate unless the OFF signal is continuously received for a certain period of time, thereby preventing malfunction due to noise or the like.

Further, once the counter 27 sends out the count completion signal, the switching circuit 25 continues to send the control signal regardless of the presence or absence of the OFF signal from the wire unit input circuit 24, so that the power switch 6 is turned off. The buzzer 21 emits an intermittent sound in synchronization with the count completion signal of the counter 27 until the LED lamp 20
Continues blinking in synchronization with the count completion signal of the counter 27.

On the other hand, when the sensor tag 1 passes through the place where the transmitter O is installed, the resonance antenna 22 generates an electromotive force by radio waves from the transmitter O, and the antenna input circuit 23 detects the electromotive force, The received signal is output to the switching circuit 25. The operation of each circuit after the switching circuit 25 receives the reception signal is as follows.
This is the same as the case where the state is changed, and the description is omitted.

The configuration and operation of each component will be described below.
The casing 2 is, as shown in FIGS.
a and the top case 2b. A circuit board 30 on which a switch 3, an LED lamp 20, an antenna 22, and various electronic components are mounted is provided on the bottom case 2a.
, A jack unit 4, a terminal 31 for connecting the positive electrode of the button battery V, and the button battery V. The top case 2b includes a piezoelectric buzzer 21 including a piezoelectric diaphragm 21a, a speaker housing 32, and a terminal 33, an LED window (light window) 34 for emitting light from the LED lamp 20, and a slider 5. ,It has been incorporated. Then, the sensor tag 1 shown in FIG. 2 is configured by ultrasonically welding the bottom case 2a and the top case 2b provided with each component.

As shown in FIGS. 6 and 7, the switch 3 is made of a non-conductive material such as a resin and has a box-shaped frame 3A having one side open and a triangular operated portion 3a. A first U-shaped metal terminal plate 3b attached to the frame 3A so as to close the opening, a second metal terminal plate 3c assembled to the inner surface of the frame 3A, The coil spring 3d is rotatably supported on a boss formed on the body 3A around the horizontal axis P. The operated portion 3a is provided at both end portions extending to both sides from the center q of the coil spring 3d. ,
It is swingable in _two opposite directions e ₁ and e ₂ and the frame 3A
In a state in which it is urged to return to the projecting position w projecting from the upper surface of the frame 3A, it is sandwiched and supported between the frame body 3A and the coil spring 3d. Of course, when the switch 3 is attached to the housing 2, the operated portion 3a
c.

Further, the coil spring 3d functions as a connection terminal piece for connecting and disconnecting the first terminal plate 3b and the second terminal plate 3c of the switch 3. That is, the central portion q of the coil spring 3d is always in elastic contact with the first terminal plate 3b, and when the operated portion 3a pushes down the end portion r of the coil spring 3d, the end portion r of the coil spring 3d comes into contact with the terminal plate 3c. It is configured as follows. Therefore, the operated part 3a is in two opposite directions e.
_As shown in FIG. 21, even if the anti-theft object E moves in the opposite two directions e ₁ and e ₂ , the operated portion 3a is configured to be rotatable about ₁ and e ₂ . The switch 3 is configured to be appropriately operated in accordance with the moving state of the object E. FIG. 6A shows the switch 3
FIG. 6B is a diagram showing a circuit configuration of the switch 3, and FIGS. 7A and 7B are side sectional views of the switch 3.

As shown in FIG. 8, the speaker housing 32 includes a piezoelectric vibrating plate 21a and a terminal 33 shown in FIG.
And the piezoelectric vibrating plate 21
The sound generated from a is emitted to the outside through the opening 32a. In the figure, reference numeral 32b denotes a shielding wall that shields components in the housing 2 from being exposed to the outside through the opening 10, that is, prevents a foreign object from being inserted through the opening 10. As shown in FIG. 9, the piezoelectric vibrating plate 21 a
Terminals 33a, 33b connected to the electrodes (+,-) of
When the bottom case 2a and the top case 2b are ultrasonically welded, the terminal 3 connected to the negative electrode of the button battery V
3c. 8A is a perspective view of the speaker housing 32, FIG. 8B is a rear view of the speaker housing 32, FIG. 9A is a perspective view of the terminal portion 33, and FIG. FIG.

As shown in FIG. 10, light from one LED lamp 20 is applied to the LED window 34 provided at the corner of the housing 2 so that the LED window 34 contacts the housing 2.
Inclined surfaces 34a and 34b that split light in the directions of side surfaces 2d and 2e
Is provided.

As shown in FIG. 11, the jack unit 4 has a key insertion hole 41 for inserting the rack portion K1 of the key K (see FIG. 19) and a set button pin insertion hole for inserting the projecting pin K2 of the key K. 42 are provided. As shown in FIG. 13, the key insertion hole 41 has a pinion gear 43 that is rotated when the rack portion K1 is inserted into the key insertion hole 41, and a set button pin provided in the set button pin insertion hole 42. A movement-preventing spring 44 for preventing the movement of the moving member 45 (see FIG. 12) is provided. The pinion gear 43 is rotatably supported by the main body of the jack unit 4 with a part protruding into the key insertion hole 41 and another part protruding outside the jack unit 4. FIG.
1 (a) is a perspective view of the jack unit 4, FIG.
(B) is a side view of the jack unit 4.

A set button pin 45 slidable in the set button pin insertion hole 42 is disposed in the set button pin insertion hole 42, and an end of the set button pin insertion hole 42 is pushed by the set button pin 45. A metal contact spring 46 that is operated and swings up and down is provided. As shown in FIG. 12, the set button pin 45 includes an operated portion 45a pushed from the outside of the housing 2 and a positioning portion 45b for positioning the set button pin 45 at a specific position in the set button pin insertion hole 42. And set button pin 4
A spring storage portion 45 for storing a coil spring 47 for urging the return of the set button pin 5 in the direction opposite to the insertion direction.
c, and an end 45g that pushes the contact spring 46 to swing the contact spring 46 up and down.
FIG. 12A is a plan view of the set button pin 45,
FIG. 12B is a cross-sectional view of the set button pin 45.

As shown in FIG. 14, the set button pin projects from the inner wall of the set button pin insertion hole 42 in the space formed by the spring storage portion 45c and the inner wall of the set button pin insertion hole 42. A protruding portion 42a for restricting the movement of the shutter 45 in the sliding direction is formed. It should be noted that the coil spring 47 is, as shown in FIG.
c is arranged between the inner wall and the protrusion 42a,
As described above, the set button pin 45 is
5 is urged to return in the direction opposite to the insertion direction.

Positioning portion 45b of set button pin 45
The positioning button 45d is formed so as to have elasticity so as to be able to protrude and retreat in the protruding direction.
An engagement concave portion 42b is provided on the inner wall of the set button pin insertion hole 42 to engage with the positioning convex portion 45d when the is pressed. When the set button pin 45 is pressed, the end 45g of the set button pin 45 is pressed.
Contacts the contact spring 46 and swings the contact spring 46 up and down. This swing causes the free end of the contact spring 46 to come into contact with the circuit board 30, thereby short-circuiting the two terminals on the circuit board 30. Since the two terminals are short-circuited, the current is supplied from the battery V to each circuit in the housing 2, so that the contact spring 46 corresponds to the power switch 6 in FIG. 1.

FIG. 13 and FIG.
As shown in FIG. 4, a movement preventing spring 44 is provided.
The movement preventing spring 44 is formed so as to be elastically deformable with a thin metal rod, and has one end fixed to one side of the key insertion hole 41 to be a base end and the other end swingable by elastic deformation. The free end side 44a. Free end side end 4 of movement prevention spring 44
4a, when the set button pin 45 is pressed, as shown in FIG. 14, the elastic action of the movement preventing spring 44 on the engaging portion 45e formed on the outer surface of the spring storage portion 45c of the set button pin 45. The intermediate portion 44b between the base end and the free end 44a of the movement preventing spring 44 is in a state of crossing the key insertion hole 41.

The top case 2b is provided with a slider 5 (see FIG. 15) provided with a rack portion 5a that meshes with the pinion gear 43 of the jack unit 4. As shown in FIG. 5, the slider 5 has its base 5b slidably engaged with a guide 2f provided on the inner wall of the top case 2b, and is slidable in both directions indicated by arrows A and B. In addition, the extension portion is configured such that the distal end portion of an elastically deformable extension portion 5c extending from an intermediate portion between the rack portion 5a and the base portion 5b is engaged with the engagement portion 2g of the top case 2b. The return action is urged in the direction of arrow A by the elastic action of 5c. In the drawings, 2h and 2i are projections for preventing the slider 5 from tilting, 2j is a projection for holding the speaker housing 32, and 2k is a terminal 33.
a, 33b and the terminal on the circuit board 30 to reinforce the contact between the terminal and the terminal on the circuit board 30. When the bottom case 2a and the top case 2b are ultrasonically welded, the terminal 33
a, 33b are pressed to the circuit board side.

Next, in order to start the operation of the sensor tag 1, the set button pin 45 is pushed with the projecting pin K2 of the key K to turn on the power switch 6, and the power switch is turned on in the turned-on state. 6 will be described. Initially, the set button pin 45 is held at the position shown in FIG. 16 with the free end of the movement preventing spring 44 engaged with the engaging portion 45f of the set button pin 45.

When the operated portion 45a of the set button pin 45 in the jack unit 4 is pushed inward by the projecting pin K2 of the key K, as shown in FIG.
The end 45g of 5 comes into contact with the contact spring 46, and swings the contact spring 46 downward. Due to this swing, the free end of the contact spring 46 comes into contact with the circuit board, and short-circuits the two terminals on the circuit board. As a result, the power switch 6 is turned on and operated, and the battery V
Energization of each circuit in 2 is started. At this time, when the set button pin 45 is pushed in, the coil spring 4
7 is compressed and acts to push the set button pin 45 back to the outside of the housing 2 (in the direction opposite to the direction in which the set button pin 45 is inserted). The free end end 44a of the movement preventing spring 44 extending from the key insertion hole 41 is engaged with the engagement concave portion 42d of the set button pin insertion hole 42.
5c is engaged with the engaging portion 45e on the outer surface, and thus the position is maintained against the urging force of the coil spring 47.

Next, an operation mechanism for turning off the power switch 6 to stop the operation of the sensor tag 1 will be described. In the state shown in FIG. 17, when the rack portion K1 is inserted into the key insertion hole 41, the rack portion K1
The movement preventing spring 44 provided in a state of crossing the key insertion hole 41 is pressed, and the pinion gear 43 meshing with the rack K1 is rotated. When the middle portion 44b of the movement prevention spring 44 is pressed by the rack portion K1, the middle portion 44b of the movement prevention spring 44 is pressed against the wall of the key insertion hole 41, and as a result, the free end side of the movement prevention spring 44. The end 44a is pivoted downward, and the engagement between the free end 44a and the engaging portion 45e of the set button pin 45 is released. When the pinion gear 43 is rotated by the rack portion K1, as shown in FIG. 18, the rotation of the pinion gear 43 causes the rack portion 5 to mesh with the pinion gear 43.
The slider 5 provided with a moves in the direction of arrow B. The slider 5 is provided with a pressing portion 5d which comes into contact with an end portion 45g of the set button pin 45 as the slider 5 slides in the direction of arrow B.
When d pushes the end 45g of the set button pin 45, the set button pin 45 is moved to the outside of the housing 2 (the set button pin 4
5 in the direction opposite to the insertion direction), and the engaging projection 45d of the set button pin 45 and the set button pin insertion hole 42
Is disengaged from the engagement recess 42b.

As a result, the return biasing force of the coil spring 47 in the spring storage portion 45c causes the set button pin 4
5 returns to the state before the protruding pin K2 is inserted (the state of FIG. 16), the contact spring 46 is separated from the two terminals on the circuit board, and the contact spring 46 is connected to each circuit in the housing 2 from the battery V. The energization will be stopped. The slider 5 that has been slid in the direction of the arrow B has the rack portion K1
As a result of being pulled out from the position 2, the extension portion 5c is urged to return in the direction of arrow A by the elastic action of the extension portion 5c, and returns to its original position (FIG. 16).
Position). 16, (A) of FIG. 16, FIG. 18, and FIG. 18 are cross-sectional views in plan view, and (B) of FIG. 16, FIG. 17, and FIG. 18 are cross-sectional views in side view.

[Another Embodiment] Hereinafter, another embodiment will be described. In the above embodiment, the switch 3 is provided on the side surface 2c of the housing 2, but the position where the switch 3 is provided is not limited to the side surface 2c, and may be provided on another side surface. For example,
As shown in FIG. 22, the switch 3
May be provided. In the above-described embodiment, theft is performed by inserting a thin plate-like foreign object such as a ruler between the sensor tag 1 and the anti-theft object E so that the operated portion 3a of the switch 3 does not protrude from the contact surface. Although the preliminary action cannot be detected, in order to detect such a stolen preliminary action, as shown in FIG.
Alternatively, a plurality of protrusions 2m for projecting into the antitheft object E may be provided in a state surrounding the periphery of the operated portion 3a. However, in this case, the anti-theft object E needs to be a thing (such as a cardboard box) into which the protrusion 2m can enter. In the above embodiment, the operation portion 3a of the switch 3 has been swingably configured in opposite two directions e _1, e _2, may be swung in the other plurality of directions. In the above embodiment, the LED lamp 20 is turned on and the piezoelectric buzzer 21 is sounded to output an alarm.
The alarm may be output only by using the
The sensor tag 1 is detached from the anti-theft object E as a configuration in which a transmitting device for transmitting a radio wave is provided in the inside, and a device for receiving a radio wave from the transmitting device and emitting an alarm sound or the like is provided in any place. A warning may be output by transmitting a radio wave from the transmitting device when the signal is received.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the attached drawings.

[Brief description of the drawings]

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

FIG. 2 is an external view of an anti-theft device according to an embodiment of the present invention.

FIG. 3 is an explanatory perspective view of a bottom case component according to the embodiment of the present invention.

FIG. 4 is an explanatory perspective view of components of a top case according to the embodiment of the present invention.

FIG. 5 is a plan view of a top case according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram of a switch according to the embodiment of the present invention.

FIG. 7 is a side sectional view of the switch according to the embodiment of the present invention;

FIG. 8 is an external explanatory view of a speaker housing according to an embodiment of the present invention.

FIG. 9 is an explanatory view showing the appearance of a terminal according to an embodiment of the present invention.

FIG. 10 is a perspective view of an LED window according to an embodiment of the present invention.

FIG. 11 is an explanatory view showing the appearance of a jack unit according to an embodiment of the present invention.

FIG. 12 is a configuration explanatory view of a set button pin according to the embodiment of the present invention.

FIG. 13 is an illustrative sectional view of a jack unit according to an embodiment of the present invention.

FIG. 14 is a perspective view of a main part according to the embodiment of the present invention.

FIG. 15 is an explanatory view showing the appearance of a slider according to an embodiment of the present invention.

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

FIG. 17 is a sectional view of a main part according to an embodiment of the present invention.

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

FIG. 19 is an external view of a key according to an embodiment of the present invention.

FIG. 20 is an external perspective view of a transmitter according to an embodiment of the present invention.

FIG. 21 is an explanatory diagram of the operation of the switch according to the embodiment of the present invention.

FIG. 22 is an explanatory view of the appearance of an anti-theft device according to another embodiment.

FIG. 23 is an explanatory view of the appearance of an anti-theft device according to another embodiment.

FIG. 24 is a perspective view of an anti-theft device according to a conventional example.

FIG. 25 is a diagram illustrating the operation of a switch according to a conventional example.

[Explanation of symbols]

 2 Housing 2m Projection 3 Switch 3a Operated part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G08B 13/14 H01H 13/52

Claims (3)

(57) [Claims] 1. A swing-type operated part which is urged to return to a projecting position protruding from a contact surface of the anti-theft object to a housing (2) attached to be brought into contact with the anti-theft object. An anti-theft detection device provided with a switch (3) having (3a), wherein the switch (3) is configured to be swingable in at least two opposite directions from a protruding position. Operation unit (3
a), an elastic portion (3d) for urging the operated portion (3a) to return to the projecting position, and at least a phase of the operated portion (3a) from the projecting position.
Linked to the swinging motion in one of the two opposite directions.
A theft-prevention detecting device comprising a pair of electrode portions that move to switch between an energized state and a non-energized state. 2. The device is to be taken in a state of contacting an anti-theft object.
A contact surface of the anti-theft object on a housing (2) to be attached
Oscillating operated that is urged to return to the protruding position that protrudes from
Theft protection provided with a switch (3) having a part (3a)
A stop detector, wherein the switch (3) is at least opposite to the projecting position.
Operated part (3a) configured to be swingable in two directions
Urges the operated portion (3a) to return to the projecting position.
Interlocked with the swing of the elastic part (3d) and the operated part (3a)
A pair of electrodes to switch between energized and de-energized states
And the operated portion (3a) is provided with a swing axis at the operated portion (3a).
a) a detection tool for anti-theft, which is provided at both ends of (a) and swings around the swing axis near the point of application of the biasing force applied to the operated portion (3a). . 3. A swing-type operated part which is urged to return to a projecting position protruding from a contact surface of the anti-theft object to a housing (2) attached to be in contact with the anti-theft object. An anti-theft detection device provided with a switch (3) including (3a), wherein the operated portion (3a) is configured to be swingable in a plurality of directions including at least two opposite directions, The anti-theft detection tool, wherein a plurality of protrusions (2m) for projecting into the anti-theft object are provided on the contact surface so as to surround the operated portion (3a).