WO2022048602A1

WO2022048602A1 - Anti-tamper device for vehicle-mounted unit and vehicle-mounted unit

Info

Publication number: WO2022048602A1
Application number: PCT/CN2021/116269
Authority: WO
Inventors: 李东声
Original assignee: 天地融科技股份有限公司
Priority date: 2020-09-04
Filing date: 2021-09-02
Publication date: 2022-03-10
Also published as: CN112078493A

Abstract

An anti-tamper device for a vehicle-mounted unit and a vehicle-mounted unit, the device comprising: an anti-tamper rod mounting piece (1), a circuit board (2), a press switch (3), an anti-tamper rod (4), a spring (5), and an electromagnetic push rod (6). The electromagnetic push rod (6) is provided inside of an accommodation space and is fixed on and electrically connected to the circuit board (2). When a vehicle-mounted unit is not mounted, a movable iron core extends out and is located between a press member (403) and the press switch (3). Once the vehicle-mounted unit is removed, the electromagnetic push rod prevents the anti-tamper rod from being pressed down, and the vehicle-mounted unit cannot be re-mounted without authorization, thereby achieving an anti-tamper function for the vehicle-mounted unit.

Description

An anti-dismantling device applied to a vehicle-mounted unit and the vehicle-mounted unit

CROSS-REFERENCE TO RELATED APPLICATIONS

This application requires the Chinese patent application number "202010920785.X", which was submitted by Tiandirong Technology Co., Ltd. on September 4, 2020, with the title of the invention "An anti-disassembly device applied to a vehicle-mounted unit and a vehicle-mounted unit". priority.

technical field

The present invention relates to the field of electronic technology, in particular to an anti-disassembly device applied to a vehicle-mounted unit and a vehicle-mounted unit.

Background technique

With the popularization of the non-stop toll collection electronic system ETC, the on-board unit installed on the vehicle end is widely used. At present, in order to avoid the problem that the on-board unit is removed from the window and then installed on other vehicles, it is necessary to install a tamper-proof device (such as a tamper-proof push switch, etc.) on the on-board unit to detect whether the on-board unit is disassembled. Specifically, the existing on-board unit is usually powered by a battery, and the chip of the on-board unit is connected to the battery and the anti-disassembly switch respectively. When the on-board unit is installed correctly, the anti-dismantle switch is pressed. The dismantling switch pops up, so that the chip can record the state of the switch, so that the on-board unit is detected by the switch popping up. However, since the battery may be damaged or dead, or in the absence of a battery, the chip of the on-board unit cannot detect whether the on-board unit is removed or not, and if the on-board unit is removed while the power is off, The brush was stolen, and it was re-installed on the window. Since the tamper switch was pressed again after re-installation, the power was immediately turned on or the battery was replaced, and the on-board unit still could not detect whether it was disassembled during the power outage. Therefore, a new technology is urgently needed to solve the problem that the vehicle-mounted unit cannot detect whether it is disassembled when the power is turned off.

SUMMARY OF THE INVENTION

One aspect of the present invention provides an anti-dismantling device applied to a vehicle-mounted unit, comprising: an anti-dismantle rod mounting member 1, a circuit board 2, a push switch 3, an anti-dismantle rod 4, a spring 5 and an electromagnet push rod 6; wherein : An accommodating space is formed between the circuit board 2 and the tamper-proof rod mounting member 1; the push switch 3 is arranged in the accommodating space, and is fixed on the circuit board 2 to be electrically connected to the circuit board 2; the tamper-proof rod mounting member 1 includes a The slot 101 is recessed in space. The slot 101 is provided with a mounting through hole, and the mounting through hole is set corresponding to the push switch 3; Passing through the installation through hole, the blocking plate 401 is located outside the anti-removal rod mounting member 1, the blocking plate 401 matches the shape of the card slot 101, the blocking plate 401 is blocked by the card slot 101 from entering the accommodating space, and the pressing member 403 is located in the accommodating space , and the pressing member 403 is blocked by the card slot 101 and does not leave the accommodation space; the spring 5 is sleeved on the outside of the connecting rod 402, and the spring 5 is arranged between the card slot 101 and the blocking plate 401, only between the blocking plate 401 and the card slot 101. The electromagnet push rod 6 is arranged in the accommodating space, and is fixed on the circuit board 2 and electrically connected to the circuit board 2. In the non-installed state of the vehicle-mounted unit, the moving iron core extends and is located in the pressing position. between the pusher 403 and the push switch 3; when the on-board unit is installed, the electromagnet push rod 6 is powered on, the electromagnet push rod 6 retracts the moving iron core, and the moving iron core avoids the gap between the push piece 403 and the push switch 3 Space, the anti-dismantle lever 4 moves in the direction of the push switch 3, the upper surface of the blocking plate 401 is flush with the outer surface of the anti-dismantle rod mounting member 1, and the blocking plate 401 is pressed against the window, and the pressing member 403 is pressed against On the push switch 3, the push switch 3 is triggered to the first state, and the spring 5 shrinks; after the installation of the on-board unit is completed, the electromagnet push rod 6 is powered off, and the electromagnet push rod 6 pushes out the moving iron core; When removed, the spring 5 ejects the anti-removal lever 5, the moving iron core of the electromagnet push rod 6 continues to be pushed out and is located between the pressing member 403 and the push switch 3, the push switch 3 is triggered to the second state, the first The second state is different from the first state.

Description of drawings

1 is a first cross-sectional view of an anti-disassembly device applied to a vehicle-mounted unit provided by an embodiment of the present invention;

2 is a second cross-sectional view of the anti-disassembly device applied to the vehicle-mounted unit provided by an embodiment of the present invention;

3 is an internal schematic diagram of an anti-disassembly device applied to a vehicle-mounted unit provided by an embodiment of the present invention;

FIG. 4 is a schematic perspective view of an anti-disassembly device applied to a vehicle-mounted unit according to an embodiment of the present invention.

detailed description

The embodiments of the present invention will be described in further detail below with reference to FIGS. 1 to 4 .

Referring to FIGS. 1 to 4 , the vehicle-mounted unit provided by the embodiment of the present invention includes: a tamper-proof rod mounting member 1, a circuit board 2, a push switch 3, a tamper-proof rod 4, a spring 5, and an electromagnet push rod 6; wherein:

A accommodating space is formed between the circuit board 2 and the anti-removal rod mounting member 1;

The push switch 3 is arranged in the accommodating space, and is fixed on the circuit board 2 and electrically connected to the circuit board 2;

The anti-removal rod mounting member 1 includes a card slot 101 recessed into the accommodating space, and an installation through hole is arranged in the card slot 101, and the installation through hole is correspondingly arranged with the push switch 3;

The anti-dismantle rod 4 includes a blocking plate 401, a connecting rod 402 and a pressing member 403 connected in sequence. The connecting rod 402 passes through the installation through hole, the blocking plate 401 is located outside the anti-dismantling rod mounting member 1, and the blocking plate 401 matches the shape of the card slot 101. , and the blocking plate 401 is blocked by the card slot 101 from entering the accommodating space, the pressing member 403 is located in the accommodating space, and the pressing member 403 is blocked by the card slot 101 and does not leave the accommodating space;

The spring 5 is sleeved on the outside of the connecting rod 402, and the spring 5 is arranged between the clamping slot 101 and the blocking plate 401, and is only deformed between the blocking plate 401 and the clamping slot 101, and does not enter the accommodating space;

The electromagnet push rod 6 is arranged in the accommodating space, and is fixed on the circuit board 2 to be electrically connected to the circuit board 2. In the non-installed state of the vehicle-mounted unit, the moving iron core extends and is located between the pressing member 403 and the pressing switch 3 ;

When the on-board unit is installed, the electromagnet push rod 6 is powered on, the electromagnet push rod 6 retracts the moving iron core, the moving iron core avoids the space between the pressing member 403 and the push switch 3, and the anti-removal rod 4 is directed toward the push switch 3-direction movement, the upper surface of the blocking plate 401 is flush with the outer surface of the anti-removal rod mounting member 1, and the blocking plate 401 is pressed against the window, the pressing member 403 is pressed against the push switch 3, and the push switch 3 Triggered to the first state, the spring 5 contracts;

After the on-board unit is installed, the electromagnet push rod 6 is powered off, and the electromagnet push rod 6 pushes out the moving iron core;

When the vehicle-mounted unit is removed, the spring 5 ejects the anti-removal lever 5, the moving iron core of the electromagnet push rod 6 continues to be pushed out and is located between the pressing member 403 and the push switch 3, and the push switch 3 is triggered as the first Two states, the second state is different from the first state.

Specifically, in the present invention, the anti-removal rod mounting member 1 can be the rear shell of the vehicle-mounted unit, which is integrally engaged with the circuit board 2 to form the outer shell of the vehicle-mounted unit, and the circuit board 2 is covered with a film or provided with LENS; it can also be an independent support structure. , which is clamped and fixed with the rear casing of the vehicle-mounted unit; the vehicle-mounted unit may also include a front casing, which is not specifically limited in the present invention.

If the tamper-proof rod mounting member 1 is a rear shell, an adhesive member such as a back glue can be provided on the tamper-proof rod mounting member 1, and the vehicle-mounted unit can be fixed on the window through the adhesive member.

The shape of the clamping slot 101 may be circular or rectangular, and may also be a long slot passing through the anti-removal rod mounting member 1 as shown in FIG. 4 , which is not specifically limited in the present invention.

The shape of the mounting through hole and the connecting rod 402 is matched, and may be circular or square, which is not specifically limited in the present invention.

During use, the factory state can be as shown in Figure 1, and the on-board unit is not powered on, the moving iron core of the electromagnet push rod 6 is blocked between the pressing member 403 and the push switch 3; the blocking plate 401 is higher than the tamper-proof The outer surface of the rod mount 1.

When installation is required, power on the on-board unit, and after the electromagnet push rod 6 is powered on, the moving iron core is retracted, the installer installs the on-board unit on the surface of the window, and the anti-removal lever 4 is pressed on the push switch 3 to trigger the The push switch is in a closed or open first state.

After the installation is completed, power off the on-board unit, and the electromagnet push rod 6 is powered down to push out the moving iron core. The moving iron core can rest on the anti-dismantle rod 4 and cannot be pushed out further when blocked by the anti-dismantle rod 4 .

Once the on-board unit is removed from the window, the spring 5 will pop out the anti-removal lever 4, triggering the push switch to a second state of opening or closing, which is different from the first state, the electromagnet push rod The moving iron core of 6 will continue to push out and block between the anti-dismantle lever 4 and the push switch 3, so that the anti-dismantle lever 4 cannot be pressed again, and the push switch 3 maintains the second state, so that in the subsequent During the detection of the state of the switch 3, it is detected that the vehicle-mounted unit has been removed. Therefore, the on-board unit cannot be illegally installed back.

As an optional implementation of the embodiment of the present invention, after the vehicle-mounted unit is removed, when the power is turned on again, the chip disposed on the circuit board 2 detects that the push switch 3 is triggered to the second state, and deletes the Confidential data. Specifically, since the push switch 3 maintains the second state, when the power is turned on again, the chip can detect that the push switch 3 is in a disassembled state, thereby deleting the confidential data and ensuring the safety of the data inside the vehicle-mounted unit.

If the on-board unit needs to be re-installed, the relevant staff needs to power on the on-board unit and repeat the installation process, and further need to re-write the confidential data.

It can be seen that by using the anti-removal device and the on-board unit provided by the present invention, after the on-board unit is disassembled, the electromagnet push rod prevents the anti-dismantle lever from being pressed, and the on-board unit cannot be illegally installed again. The anti-disassembly function of the on-board unit is provided. Further, the security of the data of the vehicle-mounted unit is protected by deleting the confidential data when the power is turned on again.

Another aspect of the present invention further provides a vehicle-mounted unit, the vehicle-mounted unit includes the anti-dismantling device applied to the vehicle-mounted unit as shown in FIG. 1 to FIG. 4 .

It can be seen that using the vehicle-mounted unit provided by the present invention, after the vehicle-mounted unit is disassembled, the electromagnet push rod prevents the anti-disassembly lever from being pressed, and the vehicle-mounted unit cannot be illegally installed again, thus realizing the anti-disassembly function of the vehicle-mounted unit. Further, the security of the data of the vehicle-mounted unit is protected by deleting the confidential data when the power is turned on again.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those of ordinary skill in the art will not depart from the principles and spirit of the present invention Variations, modifications, substitutions, and alterations to the above-described embodiments are possible within the scope of the present invention without departing from the scope of the present invention. The scope of the invention is defined by the appended claims and their equivalents.

Claims

An anti-disassembly device applied to a vehicle-mounted unit, characterized in that it comprises: an anti-disassembly rod mounting member (1), a circuit board (2), a push switch (3), an anti-disassembly rod (4), and a spring (5) and solenoid pusher (6); where:

An accommodating space is formed between the circuit board (2) and the anti-removal rod mounting member (1);

The push switch (3) is arranged in the accommodating space, and is fixed on the circuit board (2) and electrically connected to the circuit board (2);

The anti-removal rod mounting member (1) includes a card slot (101) recessed into the accommodating space, and an installation through hole is arranged in the card slot (101), and the installation through hole is connected to the push switch (3). ) corresponding settings;

The anti-removal rod (4) includes a blocking plate (401), a connecting rod (402) and a pressing member (403) connected in sequence, the connecting rod (402) passes through the installation through hole, and the blocking plate (402) passes through the installation through hole. 401) The blocking plate (401) is located outside the anti-dismantle rod mounting member (1), the blocking plate (401) matches the shape of the card groove (101), and the blocking plate (401) is blocked by the card groove (101) Without entering the accommodating space, the pressing member (403) is located in the accommodating space, and the pressing member (403) is blocked by the card slot (101) and does not leave the accommodating space;

The spring (5) is sleeved on the outside of the connecting rod (402), and the spring (5) is arranged between the locking groove (101) and the blocking plate (401), and only when the blocking deformation between the board (401) and the card slot (101), and does not enter the accommodating space;

The electromagnet push rod (6) is arranged in the accommodating space, and is fixed on the circuit board (2) to be electrically connected to the circuit board (2). The iron core protrudes and is located between the pressing member (403) and the pressing switch (3);

When the vehicle-mounted unit is installed, the electromagnet push rod (6) is powered on, the electromagnet push rod (6) retracts the moving iron core, and the moving iron core avoids the pressing member (403) and the pressing The space between the type switches (3), the anti-dismantle rod (4) moves in the direction of the push-type switch (3), the upper surface of the blocking plate (401) is connected to the anti-dismantle rod mounting member (1) ) is flush with the outer surface, and the blocking plate (401) is pressed against the window, the pressing member (403) is pressed against the push switch (3), and the push switch (3) Triggered to the first state, the spring (5) contracts;

After the installation of the vehicle-mounted unit is completed, the electromagnet push rod (6) is powered off, and the electromagnet push rod (6) pushes out the driving iron core;

When the vehicle-mounted unit is removed, the spring (5) ejects the anti-removal lever (5), and the moving iron core of the electromagnet push rod (6) continues to be pushed out and is located at the pressing piece (403) Between the push switch (3), the push switch (3) is triggered into a second state, and the second state is different from the first state.
The anti-disassembly device applied to the vehicle-mounted unit according to claim 1, characterized in that, after the vehicle-mounted unit is removed, when the power is turned on again, the chip provided on the circuit board (2) detects the pressing The switch (3) is triggered to the second state, and the confidential data in the chip is deleted.
A vehicle-mounted unit, characterized in that it comprises the anti-dismantling device applied to the vehicle-mounted unit as claimed in claim 1 or 2.