JP3483226B2 - Electronic equipment anti-theft panel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antitheft panel which is effective in preventing the theft of electronic equipment such as an operation panel of an on-vehicle audio equipment.

[0002]

2. Description of the Related Art In-vehicle electronic devices, particularly audio devices, are often pulled out of a console panel and stolen when the user is away from the vehicle. An anti-theft mechanism provided detachably on the main body has been proposed. Further, although a remote controller for remotely controlling a television receiver is widely used, many of the remote controllers are also configured so that they can be attached to the main body of the receiver when not in use. As described above, an attaching / detaching mechanism of an electronic device has been conventionally developed in order to detachably provide an independent single component in the main body case of the electronic device.

[0003]

However, it must be said that the effect of theft prevention is still weak if the operation panel is simply attachable to and detachable from the main body of the electronic device.

An object of the present invention is to provide an electronic device which has a theft prevention panel other than the above-mentioned operation panel so that it can be attached to and detached from the electronic device body and can be key-locked, and an electronic device which is effective in preventing theft is built in. The aim is to improve the anti-theft effect of the.

[0005]

In order to achieve the above object, the present invention relates to an electronic device main body having an operation panel.
In an antitheft panel detachably configured in place of the operation panel, lock means for locking the panel to the electronic device body by key operation, intruder detection sensor and alarm device, and lock by the lock means. In summary, a power supply means for supplying power to the sensor and a first control means for operating the alarm device for a predetermined time after the detection output of the sensor is generated are provided.

The above-mentioned anti-theft panel of the present invention preferably has the following configuration. (A) A test mode switch, an indicator for displaying the operating state of the sensor, and second control means for keeping the sensor and the indicator in the operating state for a predetermined time by the switch when unlocked. (B) The second control means is configured to deactivate the alarm device for the predetermined time. (C) Flashing display means for flashing the indicator when locked by the locking means is provided. (D) The power supply means is adapted to operate after a predetermined time has elapsed from the lock by the key means. (E) A battery built in the panel, an indicator, a battery check switch, a means for comparing the output of the battery with a predetermined value by the operation of the switch, and a means for lighting the indicator according to the comparison result, Is equipped with.

[0007]

In the anti-theft panel of the present invention having the above-described structure, when the panel is attached to the electronic equipment main body instead of the operation panel and locked, the intruder detection sensor is activated by being supplied with power. When the detection output of the sensor is generated at this time, the alarm device operates for a predetermined time. Therefore, if the intruder at this time is a normal person such as a driver, the operation of the sensor can be confirmed and the sensor can be turned off. Immediately thereafter or after a further predetermined time, the sensor of the alarm device is not turned off, and the alarm continues to be issued as long as there is the above detection output.

[0008]

Embodiments of the present invention shown in the drawings will be described below. (1) Operation panel attachment / detachment mechanism First, the operation panel attachment / detachment mechanism will be described. In FIG. 1, reference numeral 1 is a case of an in-vehicle audio device, 2 is an operation panel,
As shown in the figure, a detachable member 16, a connector 4, a pushing member 17, and a claw portion 7 are provided on the front surface 1a of the case in order from the left.

First, the attachment / detachment member 16 is provided on the front surface 1a of the case as follows. That is, as shown in FIG. 2, a rectangular hole is provided in the front surface 1a of the case, and substantially L-shaped support members 18 are provided above and below the rear surface so that the right side (as viewed from the front of the main body case 1) is released. It is installed in different directions. A locking portion 1c is provided on the right side (viewed from the front) of the support member 18. The attaching / detaching member 16 is similar to the conventional example, and has a key portion 16a formed in a key shape, a column-shaped protruding portion 16b, and a shaft portion 1 provided on the protruding portion 16b.
6c and the receiving portion 16d. Then, a smooth inclined surface is formed on the right side surface (as viewed from the front) of the key portion 16a. Such a detachable member 16 has a shaft portion 16c.
To the right, which is the release portion of the support member 18 (as viewed from the front)
That is, by inserting from the direction of the arrow in the drawing and engaging with each other, the case front surface 1a is provided so as to be rotatable left and right. At this time, the key portion 16a projects forward from the hole in the front surface 1a of the case. A torsion coil spring 8 is provided between the upper and lower raised portions 16b of the attachment / detachment member 16. As shown in FIG. 3, one end of the torsion coil spring 8 is locked to the rear end of the plate-shaped portion in the middle of the detachable member 16, and the other end is locked to the locking portion 1c.

Further, as shown in FIGS. 4 and 5, the extruding member 17 is a box-shaped member whose front portion is processed into a semi-cylindrical shape. The rear portion of the pushing member 17 is the main body case 1.
It is embedded so that it can move back and forth, and is biased forward by a coil spring 9. The front end of the push-out member 17 is provided with dish-shaped recesses 17a on the upper and lower surfaces thereof.

On the other hand, on the back surface of the operation panel 2, as shown in FIG. 1, the attachment / detachment engaging portion 2b, the plug 10, and the pressed portion 19 are provided.
Is provided. The pressed portion 19 is a semi-cylindrical recess and is provided at a position corresponding to the pushing member 17. The depressions 17 of the pushing member 17 are formed on the upper and lower surfaces of the pressed portion 19.
A protrusion 19a that engages with a is provided.

Further, as shown in FIG. 7, a release lever 20 is provided on the front surface of the operation panel 2. As shown in FIG. 6, the release lever 20 is a wedge-shaped member whose front portion is widened, and shaft portions 20a which vertically project are provided on both sides of the wedge-shaped member. Since the shaft portion 20a is rotatably supported inside the operation panel 2, the release lever 2
0 is configured to be rotatable about the shaft portion 20a. When the operation panel 2 is mounted on the front surface 1a of the case, the rear end of the release lever 20 faces the pressing surface of the pressing portion 16d of the detachable member 16. A lever portion 20b is provided at the front end of the release lever 20 so as to project obliquely upward. As shown in FIG. 7, the lever portion 20b protrudes from the hole provided on the front surface of the operation panel 2,
The release lever 20 can be rotated by pressing the lever portion 20b.

When the operation panel 2 is mounted on the main body case 1, as shown in FIG. 7, the back surface of the operation panel 2 is directed toward the case front surface 1a, and the groove portion 12 is inserted so that the claw portion 7 engages. When the operation panel 2 is pushed backward,
The operation panel 2 pivots rearward around the engagement portion between the groove portion 12 and the claw portion 7 and the plug 10 is connected to the connector 4, so that the circuit of the audio device and the operation member are connected via the terminals of both members. Are electrically connected. On the other hand, when the operation panel 2 is pressed rearward, the pushing member 17 moves backward against the biasing force of the coil spring 9, and the pushing member 17 provided on the front surface 1a of the case.
As shown in FIG. 8, the front end of the push-fitted portion 19 enters the pushed portion 19 of the operation panel 2, and the protrusion 19a of the pushed portion 19 has the protrusion 19a.
Engages with the recess 17a. Then, as shown in FIG. 3, the key portion 16a of the detachable member 16 is provided at the right edge of the detachable engaging portion 2b.
9 is engaged, the operation panel 2 is attached to the main body case 1 as shown in FIG.

Next, when the operation panel 2 is removed from the main body case 1, the lever portion 20b protruding on the front surface of the operation panel 2 is pressed and rotated. Then, as shown in FIG. 10, the release lever 20 rotates, and its rear end abuts on the pressing surface of the pressing portion 16 d of the attachment / detachment member 16 and slides, and the key portion 16
a is retracted to the left. Therefore, the attachment / detachment member 16 rotates leftward against the biasing force of the torsion coil spring 8, and the key portion 16a is disengaged from the right edge of the locked portion 2b. Since the pushed portion 19 of the operation panel 2 is biased forward by the pushing member 17, the operation panel 2 rotates forward with the engaging portion between the groove portion 12 and the claw portion 7 as an axis. However, as shown in FIG.
The protrusion 19 a of the pressed portion 19 is the recess 17 of the pushing member 17.
Since it is engaged with "a", the rotation of the operation panel 2 is temporarily stopped, and the operation panel 2 is prevented from falling off. When the operation panel 2 is pulled out by hand in this state, the projection 19a is disengaged from the recess 17a and the engagement between the claw 7 and the groove 12 is disengaged, so that the operation panel 2 is removed from the main body case 1.

It should be noted that the coil spring 9, the pressing member 17, the pressed portion 19 and the like are not necessarily provided, and the release lever 20 may be a vertically movable type instead of a horizontally rotatable type.

(2) Anti-theft panel attaching / detaching mechanism FIG. 11 shows the anti-theft panel 50 front surface 50a and back surface 5
0b is shown. The antitheft panel 50 has substantially the same size and shape as the operation panel 2, and the release lever 21, the key receiving portion 22, and the ultrasonic wave transmission sensor 23 are provided on the front surface 50a of the panel.
a, an ultrasonic wave reception sensor 23b, an alarm speaker 24 including a piezoelectric vibrator, an indicator 25, and the like. The antitheft panel 20 does not have the pressing member 17 or the like, and the claws and grooves are not shown.

A dedicated key 26 is inserted into the key receiving portion 22 and can be rotated to an ON or OFF position, and the key 26 can be removed at that position. Panel back 50b
A rear cover 27 is screwed to the rear cover 27, a battery cover 28 is attached to the rear cover 27, and a sensor sensitivity adjusting volume 29, a slide switch 30a used when adjusting the sensor sensitivity, a battery remaining amount display switch 30b, a connector 31, etc. Is provided, and a lock piece described below is projected in the arrow direction on the front side of the back surface when the key is locked.

FIG. 12 shows a panel front escutcheon 20c constituting the panel front face 50a, and a key cylinder constituting the key receiving portion 22 is inserted into the hole 32. A board 33 is mounted inside the escutcheon 20c, and the sensors 23a and 23b, the indicator (LED) 25, the piezoelectric speaker 24, the switches 30a and 30b, the volume 29, and the IC circuits 34 and 3 are mounted on the board 33.
5 etc. are attached.

FIG. 13 shows the inside of the rear cover 27, in which a battery is accommodated in the battery accommodating portion 27a.
8 is attached. 27b is a connector board on which a connector 31 is mounted, and the connector 31 has a hole 2
It is exposed to the outside from 7c. Reference numeral 36 denotes an attachment portion of the key lock portion, to which the lock plate 37 and the spring 38 are attached as described below.

FIG. 14 is an exploded view showing the structure of the key lock portion. Reference numeral 39 is a key cylinder, 40 is a key lock holder, 41 is a turn plate, 42 is a washer, and 43 is a mounting screw. Bosses 36a to 36h for mounting the key lock portion are planted in the mounting portion 36 inside the rear cover 27. Correspondingly, the lock plate 37 has fitting portions 37a to 37d, a slope portion 37e and a bottom surface. Lock pieces 37f and 37g are provided. As is apparent from FIG. 14, the key cylinder 39 is a key lock holder 40.
Is fitted into the hole 41a of the turn plate 41 through the hole 40a, and the turn plate 41 is rotatably integrally assembled by the washer 42 and the mounting screw 43. The fitting portions 37a, 37c and 37d of the lock plate 37 are fitted to the bosses 36a, 36c and 36d, and also the fitting 37b.
Is fitted to the boss 36b via a spring 38.

With the key cylinder assembled as described above, the lock holder 40 is attached and fixed to the bosses 36e to 36h by screws 40e to 40h. In this state,
The lock pieces 37f and 37g are the windows 36i and 36 of the mounting portion 36.
The tip portion 41b of the turn plate 41 is placed on the lowest portion of the inclined surface portion 37e of the lock plate 37, facing the j.

In the key lock portion assembled as described above, the lock plate 37 is slightly floating due to the biasing force of the spring 38, but the dedicated key 26 is inserted into the key cylinder 39 and rotated from the OFF position to the ON position. Then, the turn plate 41 rotates, and the tip portion 41 of the turn plate 41 rotates.
b rises along the sloped portion 37e of the lock plate 37, the lock plate 37 is pushed down against the biasing force of the spring 38, and the lock pieces 37f and 37g are inserted into the holes 36i and 3.
It projects from 6j.

As a result, as shown schematically in FIG.
At the ON position in FIG. 7A, the lock pieces 37f and 37g advance to the positions where the lock pieces 37f and 37g face the key portion 16a of the detachable member 16, so that the release lever 20 prevents the detachable member 16 from rotating and is completely locked. It

On the other hand, in the OFF position, as shown in FIG.
The lock pieces 37f and 37g retreat as shown in FIG.
Since it can be freely rotated, it can be released by the release lever 20.

A lock detection switch 44 is disposed near the turn plate 41 as shown in FIG. 16, and the turn plate 4 is in the OFF position as shown in FIG.
The short diameter portion 41c of No. 1 faces the switch 44 and is in the OFF state without pressing the switch. However, in the ON position, the long diameter portion 41c of the turn plate 41 is rotated as the turn plate 41 rotates.
Since d comes into contact with the switch 44, it is pressed to turn it on. Thereby, the key lock can be detected.

FIG. 17 shows an example of the configuration of the anti-theft circuit built in the above-mentioned anti-theft panel. In FIG. 17, 45 is a comparator circuit, 46 is an indicator (L
ED) blinking circuit, 47 sensor power standby circuit, 48 sensitivity adjustment timer circuit, 49 intruder detection sensor (ultrasonic wave transmission / reception sensors 23a, 23b), 50 indicator drive circuit, 51 indicator on / off circuit, 52 Is an alarm on / off circuit, 53 is an alarm standby circuit, 54 is a sensor detection notification circuit, 55 is an alarm drive circuit, and 56 is an alarm (speaker 24, buzzer, etc.).

The power of the above-mentioned anti-theft circuit is supplied in parallel from the battery 57 built in the panel through the following three switches. That is, the comparator circuit 45 is connected to the battery 57 via the battery check switch 30b,
Indicator blinking circuit 46 and sensor power supply standby circuit 47
Is connected to the battery 57 via the set switch 44 which is turned on when the key lock is turned on, and the sensitivity adjustment timer circuit 48 is connected to the battery 57 via the test switch 30a.

Next, each function of the anti-theft circuit having the above-mentioned structure will be described. (I) By turning on the battery check function switch 30b, the output voltage of the battery 57 is input to the comparator circuit 45 and compared with a predetermined set voltage. As a result, if the battery output voltage is equal to or higher than the set voltage level, the battery is determined to be normal, and therefore the indicator drive circuit 50 turns on the indicator (LED) 25 in response to the comparison output of the comparator circuit 45. This check is performed only while the switch 30b is on.

(Ii) Intruder detection / warning function When the key lock is performed as described above, the set switch 44 is turned on and power is supplied to the blinking circuit 46. Therefore, the blinking signal is output from the circuit 46 as an indicator. It is input to the drive circuit 50 and blinks the indicator 25. The blinking of the indicator 25 continues until the set switch 44 is turned off, that is, until the key lock is released,
Display that the key is locked. When the set switch 44 is turned on as described above, power is supplied to the sensor power supply standby circuit 47, and the sensor 49 is supplied with power after waiting for a predetermined time set in this circuit. Even if the key lock is performed in this way, the sensor 49 becomes operational after a predetermined time elapses. Therefore, if the driver leaves the vehicle for a short time and returns, the alarm should not be issued each time. be able to. When power is supplied to the sensor 49, if there is an intruder, the sensor 49 detects this, and the detection signal is input to the alarm on / off circuit 52 and the indicator on / off circuit 51, and the circuit 52 is turned on. In the state, the ON signals are directly input to the alarm device standby circuit 53 and the sensor detection notification circuit 54, respectively. The alarm on / off circuit 52 is in the on state except in the test mode described later. As a result, the sensor detection notification circuit 54 first activates the built-in monostable multivibrator to input an ON signal to the alarm drive circuit 55 for a predetermined short time, and the alarm 56 outputs an alarm for that short time. Emit.
Therefore, if the driver who sets the key lock is an intruder who has entered the vehicle, he / she can know the operation of the sensor 49. At this time, the alarm device standby circuit 53 outputs an ON signal for a predetermined set time. Since it stands by, the key lock can be released so that the set switch 44 is turned off during this time, and the power can be turned off before the alarm 56 continuously sounds.
If someone other than the driver who locked the key intrudes,
Since the sensor switch notification circuit 54 cannot turn off the set switch 44 even after the alarm device 56 has sounded for a short time, the alarm device standby circuit 5 is activated after waiting for the predetermined set time.
The ON signal from 3 is continuously input to the alarm drive circuit 55, and the alarm 56 continuously outputs a warning sound to repel the intruder.

(Iii) Test mode function (sensor sensitivity adjustment function) The sensor sensitivity is adjusted by the test mode function. The test switch 30a is, for example, a non-lock push-pull switch.
With the switch, it will be on only while you are pressing it.
Sensitivity adjustment timer circuit 4 by pressing switch 30a
8 is supplied with power, and each circuit 49, 51 and 52 is supplied with power for a predetermined time set by the timer circuit 48 to be in an operating state to prevent forgetting to cancel the test mode. While the sensitivity adjustment timer circuit 48 is operating, the intruder detection sensor 49 is in the operating state and the indicator on / off circuit 51 is also in the on state. Therefore, when the detection signal of the sensor 49 is output, It is sent to the indicator drive circuit 50 via the circuit 51 to light the indicator 25. Therefore, the sensor sensitivity adjusting potentiometer 29 can be adjusted while the timer circuit 48 is operating, and can be easily set while observing the indicator 25 so as to obtain an appropriate sensor sensitivity. During this time, the alarm device on / off circuit 52 is in the off state, so the alarm device 56 does not sound. Note that the power supply is obtained from the battery 57 incorporated in the panel, but this may be obtained from, for example, an in-vehicle battery.

[0031]

As described above, according to the present invention, a dedicated anti-theft panel is used to prevent the theft of electronic equipment, and a key lock activates a sensor to detect an intruder and emit an alarm sound. Since it is possible to make a call, the anti-theft effect can be positively enhanced. Moreover, it is practically effective because measures are taken to facilitate the operation confirmation and sensitivity adjustment of the antitheft circuit by the driver who locked the key.

[Brief description of drawings]

FIG. 1 is a perspective view showing a front surface of an operation panel and an electronic device case.

FIG. 2 is an exploded perspective view showing a mounting structure of a detachable member in the operation panel of FIG.

FIG. 3 is a cross-sectional view of the attachment structure of the detachable member.

FIG. 4 is a perspective view showing an extruding member.

FIG. 5 is a side cross-sectional view showing a state where the pushing member is attached to the case.

FIG. 6 is a perspective view showing a positional relationship between a release lever and a detachable member.

FIG. 7 is a perspective view showing a state in which the operation panel is being attached to the front surface of the case and is being removed.

FIG. 8 is a side cross-sectional view showing an engagement state between the protrusion of the pressed portion and the depression of the pushing member.

FIG. 9 is a side sectional view showing how the operation panel is attached to the front surface of the case.

FIG. 10 is a perspective view showing a rotation state of a detachable member by a release lever.

FIG. 11 is a schematic perspective view showing a front surface portion and a rear surface portion of the anti-theft panel.

FIG. 12 is a schematic perspective view showing an escutcheon of an anti-theft panel and a substrate attached to the inside thereof.

FIG. 13 is a schematic perspective view showing the structure inside the back surface of the anti-theft panel.

FIG. 14 is a schematic exploded perspective view showing a structure of a key lock part.

FIG. 15 is a schematic diagram for explaining the operation of the key lock unit.

FIG. 16 is a schematic view for explaining the operation of the turn plate.

FIG. 17 is a block diagram showing a basic circuit configuration built in the anti-theft panel.

[Explanation of symbols]

1 Electronic Equipment Case 2 Operation Panel 16 Attachment / Detachment Member 50 Anti-Theft Panel 22 Key Receiving Parts 23a, 23b Ultrasonic Sensor 24 Speaker 25 Indicator 26 Dedicated Key 45 Comparator Circuit 46 Indicator Flashing Circuit 47 Sensor Power Standby Circuit 54 Sensor Detection Notification Circuit

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-4-232147 (JP, A) JP-A-47-36891 (JP, A) JP-A-62-175894 (JP, A) JP-A-7- 14077 (JP, A) Actually open 63-166853 (JP, U) Actually open 6-75090 (JP, U) Actually open 4-69345 (JP, U) Actually open 3-113497 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G08B 13/00-15/02 B60R 11/02

Claims (6)

(57) [Claims] 1. An electronic device body having an operation panel
In an anti-theft panel that is detachably configured in place of the operation panel, lock means for locking the panel to the electronic device body by key operation, an intruder detection sensor and an alarm device, and lock by the lock means are provided. A theft of an electronic device, comprising: a power supply unit that supplies power to the sensor in response to the sensor; and a first control unit that operates the alarm device for a predetermined time after the detection output of the sensor is generated. Prevention panel. Wherein the test mode switch, and indicators for displaying the operating state of the sensor, when unlocked by said switch for a predetermined time the cell
The anti-theft panel for electronic equipment according to claim 1, further comprising: second control means for activating the sensor and the indicator. 3. The anti-theft panel for electronic equipment according to claim 2, wherein the second control means is configured to deactivate the alarm device for the predetermined time. 4. The anti-theft panel for an electronic device according to claim 2, further comprising a blinking display means for blinking the indicator when the lock means locks the indicator. 5. The anti-theft panel for an electronic device according to claim 1, wherein the power supply means is activated after a predetermined time has elapsed since the lock by the key means. 6. A battery built in the panel, an indicator, a battery check switch, a means for comparing the output of the battery with a predetermined value by the operation of the switch, and a means for lighting the indicator according to the comparison result. The anti-theft panel for an electronic device according to claim 1, further comprising: