JPH08260794A - Burglarproof attachable and detachable mechanism for electronic apparatus - Google Patents

Abstract

PURPOSE: To improve a positive burglarproof effect, in a mechanism in which an operation panel is made mountable on and demountable from an electronic apparatus. CONSTITUTION: An operation panel is made mountable on and demountable from the front surface of an electron apparatus case by a quick-disconnect member. After the operation panel is removed, a burglarproof panel 20 is locked by inserting an exclusive key 26 to the key cylinder of a key receiver 22 and made in the ON position. In the key locking condition, ultrasonic sensors 23a and 23b are in the operating condition, and when an invader comes in, it is detected and the alarm is output from a speaker 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement for making a mechanism capable of attaching / detaching an operation part of an electronic device to a main body of the electronic device such as an operation panel of an on-vehicle audio device to further effectively prevent theft.

[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 a mechanism in which an operation panel is attachable to and detachable from an electronic equipment body, and further, a burglarproof panel other than the operation panel is attachable to and detachable from the electronic equipment body and can be key-locked. By doing so, it is possible to more positively improve the antitheft effect of electronic devices.

[0005]

In order to achieve the above object, an antitheft attachment / detachment mechanism for an electronic device according to the present invention has an operation panel that is attachable / detachable to / from the main body of the electronic device. Another anti-theft panel is configured to be attachable / detachable to / from the electronic device body, the anti-theft panel is provided with a lock means by a key, and the anti-theft panel is locked to the electronic equipment body by a key operation on the lock means. The summary is that it is configured as described above.

It is preferable that the antitheft attachment / detachment mechanism of the present invention has the following configuration. (I) The lock means includes a key receiving portion provided on the panel surface of the anti-theft panel, an operating member that interlocks with the rotation of a key inserted in the key receiving portion, and an electronic device body side by the operating member. And a lock member that locks or disconnects the attachment / detachment member. (Ii) The anti-theft panel includes an ultrasonic wave transmission / reception sensor and an alarm device that responds to the output of the sensor, and is configured so that the sensor and the alarm device are activated when locked by the key. (Iii) The anti-theft panel has a built-in battery,
The sensor and the alarm device are adapted to be powered from the battery when locked by the key. (Iv) The anti-theft panel is provided with at least one remaining battery level indicator on its panel surface.

[0007]

In the mechanism of the present invention, for example, when the driver leaves the vehicle, the operation panel is removed from the audio device, and then the antitheft panel is mounted and key locked. As a result, the sensor and the alarm device are activated after a lapse of a predetermined time, an intruder is detected by the sensor, and an alarm is issued after a predetermined time.

[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, rectangular holes are provided in the front surface 1a of the case, and substantially L-shaped support members 18 are provided above and below the rear surface to release the right side (as viewed from the front of the main case 1). 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 the key portion 16a formed in a key shape, the columnar protruding portion 16b, and the 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 intermediate plate-shaped portion 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 12 and the claw 7, and the plug 10 is connected to the connector 4, so that the circuit of the audio device and the operation panel are connected via the terminals of both members. Are electrically connected. On the other hand, when the operation panel 2 is pressed backward, the pushing member 17 moves backward against the biasing force of the coil spring 9, and the pushing member 1 provided on the front surface 1a of the case.
The front end of 7 enters the pressed portion 19 of the operation panel 2 as shown in FIG.
It engages with the recessed part 17a of No. 7. 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 front surface 20a and the back surface 2 of the anti-theft panel 20.
0b is shown. The anti-theft panel 20 has substantially the same size and shape as the operation panel 2, and a release lever 21, a key receiving portion 22, an ultrasonic transmission sensor 23 are provided on the front surface 20a 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 20b
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 which constitutes the panel front face 20a, and a key cylinder which constitutes 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, and 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 is a basic electrical system diagram of the above-mentioned anti-theft panel. Reference numeral 45 is a control circuit (CPU), the power source Vcc of which is supplied from the battery, and the sensors 23a, 2 are provided.
3b, speaker 24, switches 30a, 30b, 44,
An indicator (LED) 25, a volume 29, etc. are connected.

When the key is locked as described above, the switch 44 detects it and in response to the detection signal, the control circuit 45 activates the sensors 23a and 23b. At this time, when an intruder enters the passenger compartment, the ultrasonic wave emitted by the sensor 23a is reflected, the sensor 23b receives the reflected wave, and the control circuit 45 responds to the detection signal from the sensor.
Turns on the alarm circuit 46 and causes the speaker 24 to generate an alarm. When the switch 30b is turned on and the battery capacity is equal to or larger than a predetermined value, the indicator 25 lights up. When the slide switch 30a is turned to the on position,
The sensitivity of the sensors 23a and 23b can be adjusted by the volume 29. Since the anti-theft panel 20 has a built-in battery, the connector 31 is not always necessary. However, when power is supplied from the electronic device body, the connector 31 is used.

[0028]

As described above, according to the present invention, not only the operation panel can be attached and detached, but also the operation panel can be detached so that another anti-theft panel can be key-locked to the electronic equipment main body. Since this anti-theft panel can detect an intruder by a sensor and emit an alarm sound, the anti-theft effect can be positively enhanced. Also, if a battery is built into the anti-theft panel, the alarm sound will continue to be generated even if the electronic device is removed.
It is more effective in preventing theft.

[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 attaching / detaching member 20 anti-theft panel 22 key receiving portions 23a, 23b ultrasonic sensor 24 speaker 25 indicator 26 dedicated key

Claims (5)

[Claims] 1. An attachment / detachment mechanism having an operation panel attachable / detachable to / from an electronic device body, wherein an anti-theft panel other than the operation panel is configured to be attachable / detachable to / from the electronic device body. An antitheft attachment / detachment mechanism for an electronic device, characterized in that the panel is provided with a lock means by a key, and the antitheft panel is locked to the main body of the electronic device by a key operation on the lock means. 2. The lock means includes a key receiving portion provided on a panel surface of an anti-theft panel, an operating member that interlocks with rotation of a key inserted in the key receiving portion, and an electronic device by the operating member. A lock member that locks or unlocks the detachable member on the main body side.
Anti-theft mechanism for electronic devices described in. 3. The anti-theft panel comprises an ultrasonic wave transmission / reception sensor and an alarm device responsive to the output of the sensor, and the sensor and the alarm device are activated when locked by the key. The anti-theft attachment / detachment mechanism for an electronic device according to claim 2. 4. The anti-theft panel has a built-in battery, and the sensor and alarm device are powered from the battery when locked by the key. Anti-theft attachment / detachment mechanism for electronic devices. 5. The antitheft attachment / detachment mechanism for an electronic device according to claim 4, wherein the antitheft panel is provided with at least one indicator for displaying the remaining amount of the battery on the panel surface.