Anti-disassembly device for vehicle-mounted unit and vehicle-mounted unit

Abstract

The present invention provides an anti-dismantling device for a vehicle-mounted unit and the vehicle-mounted unit. After the vehicle-mounted unit is disassembled, an electromagnet push rod prevents the anti-dismantling rod from being pressed, and the vehicle-mounted unit cannot be illegally installed again, thereby realizing the anti-dismantling function of the vehicle-mounted unit.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and in particular to an anti-disassembly device applied to a vehicle-mounted unit and the vehicle-mounted unit. Background Art

[0002] With the popularization of electronic toll collection systems (ETC), on-board units (OBUs) installed on the vehicle side have been widely used. Currently, in order to avoid the problem of the OBU being removed from the window and then installed on other vehicles, it is necessary to set an anti-disassembly device (such as an anti-disassembly press switch) on the OBU to detect whether the OBU has been disassembled. Specifically, existing OBUs are usually battery-powered. The chip of the OBU is connected to the battery and the anti-disassembly switch respectively. When the OBU is correctly installed, the anti-disassembly switch is pressed. When the OBU is disassembled, the anti-disassembly switch pops up. The chip can thus record the state of the switch, thereby detecting the removal of the OBU by the pop-up switch. However, since the battery may be damaged or dead, or in the absence of a battery, the chip of the OBU cannot detect whether the OBU has been disassembled. Moreover, if the OBU is disassembled, swiped, and reinstalled on the window during a power outage, the anti-disassembly switch will be pressed again after reinstallation. At this time, even if the power is turned on or the battery is replaced, the OBU still cannot detect whether it has been disassembled during the power outage. Therefore, a new technology is urgently needed to solve the problem that the on-board unit cannot detect whether it has been disassembled when the power is off. Summary of the Invention

[0003] The present invention aims to solve the above-mentioned problems.

[0004] The main purpose of the present invention is to provide an anti-tampering device for a vehicle-mounted unit;

[0005] Another object of the present invention is to provide a vehicle-mounted unit.

[0006] To achieve the above object, the technical solution of the present invention is specifically implemented as follows:

[0007] On one hand, the present invention provides an anti-dismantling device for a vehicle-mounted unit, comprising: an anti-dismantling rod mounting member 1, a circuit board 2, a push-type switch 3, an anti-dismantling rod 4, a spring 5 and an electromagnet push rod 6; wherein: a receiving space is formed between the circuit board 2 and the anti-dismantling rod mounting member 1; the push-type switch 3 is arranged in the receiving space and is fixed on the circuit board 2 and electrically connected to the circuit board 2; the anti-dismantling rod mounting member 1 includes a card slot 101 recessed into the receiving space, a mounting through hole is provided in the card slot 101, and the mounting through hole is correspondingly provided to the push-type switch 3; the anti-dismantling rod 4 includes a blocking plate 401, a connecting rod 402 and a pressing member 403 connected in sequence, and the connecting rod 402 The blocking plate 401 passes through the mounting hole and is located outside the anti-tamper rod mounting member 1. The blocking plate 401 matches the shape of the card slot 101 and is blocked by the card slot 101 from entering the accommodating space. The pressing member 403 is located in the accommodating space and is blocked by the card slot 101 from leaving the accommodating space. The spring 5 is sleeved on the outside of the connecting rod 402 and is set between the card slot 101 and the blocking plate 401. The spring 5 is deformed only between the blocking plate 401 and the card slot 101 and does not enter the accommodating space. The electromagnet The 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. When the vehicle-mounted unit is not installed, the moving iron core extends and is located between the pressing piece 403 and the push-type 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 space between the pressing piece 403 and the push-type switch 3, and the anti-dismantling rod 4 moves toward the push-type switch 3. The upper surface of the blocking plate 401 is flush with the outer surface of the anti-dismantling rod mounting member 1, and the blocking plate 401 is flush with the outer surface of the anti-dismantling rod mounting member 1. When the vehicle window is touched, the pressing member 403 touches the push switch 3, the push switch 3 is triggered to the first state, and the spring 5 contracts; after the vehicle-mounted unit is installed, the electromagnet push rod 6 is powered off, and the electromagnet push rod 6 pushes out the movable iron core; when the vehicle-mounted unit is removed, the spring 5 pops out the anti-dismantling rod 5, and the movable 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 to the second state, which is different from the first state.

[0008] Among them, after the vehicle-mounted unit is removed and powered on again, the chip set on the circuit board 2 detects that the push switch 3 is triggered to the second state, and deletes the confidential data in the chip.

[0009] Another aspect of the present invention provides a vehicle-mounted unit, comprising the above-mentioned anti-disassembly device applied to the vehicle-mounted unit.

[0010] It can be seen from the technical solution provided by the present invention that, by using the anti-dismantling 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-dismantling rod from being pressed, and the on-board unit cannot be illegally installed again, thereby realizing the anti-dismantling function of the on-board unit.

[0011] Furthermore, the security of the on-board unit data is protected by deleting confidential data when the power is turned on again. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 A first cross-sectional view of an anti-tampering device applied to a vehicle-mounted unit provided by an embodiment of the present invention;

[0014] Figure 2 A second cross-sectional view of the anti-tampering device applied to the vehicle-mounted unit provided by an embodiment of the present invention;

[0015] Figure 3 An internal schematic diagram of an anti-tampering device applied to a vehicle-mounted unit provided by an embodiment of the present invention;

[0016] Figure 4 A three-dimensional schematic diagram of an anti-tampering device applied to a vehicle-mounted unit provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate description and simplify the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance, quantity, or position.

[0019] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0020] The following will be combined Figures 1 to 4 The embodiments of the present invention are described in further detail.

[0021] See also Figures 1 to 4 The vehicle-mounted unit provided by the embodiment of the present invention includes: an anti-tamper rod mounting member 1, a circuit board 2, a push-type switch 3, an anti-tamper rod 4, a spring 5 and an electromagnet push rod 6; wherein:

[0022] An accommodating space is formed between the circuit board 2 and the anti-tamper rod mounting member 1;

[0023] The push-type switch 3 is disposed in the accommodation space and is fixed on the circuit board 2 and electrically connected to the circuit board 2;

[0024] The anti-tamper rod mounting member 1 includes a slot 101 recessed into the accommodation space, and a mounting through hole is provided in the slot 101, and the mounting through hole is provided corresponding to the push-type switch 3;

[0025] The anti-tamper lever 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 mounting through hole. The blocking plate 401 is located outside the anti-tamper lever mounting member 1. The blocking plate 401 matches the shape of the card slot 101 and is blocked by the card slot 101 from entering the accommodating space. The pressing member 403 is located in the accommodating space and is blocked by the card slot 101 from leaving the accommodating space.

[0026] The spring 5 is sleeved on the outside of the connecting rod 402. The spring 5 is arranged between the card slot 101 and the blocking plate 401. The spring 5 is deformed only between the blocking plate 401 and the card slot 101 and does not enter the accommodation space.

[0027] The electromagnet push rod 6 is arranged in the accommodation space and fixed on the circuit board 2 and electrically connected to the circuit board 2. When the vehicle-mounted unit is not installed, the moving iron core is extended and located between the pressing member 403 and the push switch 3;

[0028] When the vehicle-mounted unit is installed, the electromagnet push rod 6 is energized, the electromagnet push rod 6 retracts the movable iron core, and the movable iron core avoids the space between the pressing member 403 and the push switch 3. The anti-tampering lever 4 moves toward the push switch 3. The upper surface of the blocking plate 401 is flush with the outer surface of the anti-tampering lever mounting member 1, and the blocking plate 401 contacts the vehicle window. The pressing member 403 contacts the push switch 3, and the push switch 3 is triggered to the first state, and the spring 5 contracts.

[0029] After the vehicle-mounted unit is installed, the electromagnet push rod 6 is powered off and pushes the moving iron core out;

[0030] When the on-board unit is removed, the spring 5 pops out the anti-dismantling rod 5, and 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, which is different from the first state.

[0031] Specifically, in the present invention, the anti-dismantling rod mounting part 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 a film or LENS is set on the circuit board 2; it can also be an independent bracket structure, which is engaged and fixed with the rear shell of the vehicle-mounted unit; the vehicle-mounted unit can also include a front shell, which is not specifically limited in the present invention.

[0032] If the anti-tamper rod mounting member 1 is a rear shell, an adhesive member such as a backing adhesive may be provided on the anti-tamper rod mounting member 1 , and the vehicle-mounted unit may be fixed to the vehicle window through the adhesive member.

[0033] The shape of the card slot 101 can be circular, rectangular, or Figure 4 The figure shows a long slot that passes through the anti-tamper rod mounting member 1, which is not specifically limited in the present invention.

[0034] The shapes of the mounting through hole and the connecting rod 402 match each other and can be circular or square, which is not specifically limited in the present invention.

[0035] During use, the factory status can be Figure 1 As shown, 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 outer surface of the anti-dismantling rod mounting member 1.

[0036] When installation is required, the vehicle-mounted unit is powered on, and the electromagnet push rod 6 retracts the moving iron core after power is supplied. The installer installs the vehicle-mounted unit on the window surface, and the anti-dismantling rod 4 presses on the push switch 3, triggering the push switch to a first state of closing or opening.

[0037] After the installation is completed, the vehicle-mounted unit is powered off, and the electromagnet push rod 6 is powered off to push out the movable iron core, which can be against the anti-tampering rod 4 and is blocked by the anti-tampering rod 4 and cannot be pushed out further.

[0038] Once the OMU is removed from the vehicle window, the spring 5 will push the anti-tamper lever 4 outward, triggering the push-type switch to a second state of open or closed. This state is different from the first state. The movable iron core of the electromagnet push rod 6 will continue to be pushed out, blocking it between the anti-tamper lever 4 and the push-type switch 3, so that the anti-tamper lever 4 cannot be pressed again. The push-type switch 3 maintains the second state, so that in the subsequent detection process of the state of the push-type switch 3, it is detected that the OMU has been removed. Therefore, the OMU cannot be illegally installed again.

[0039] As an optional implementation of the embodiment of the present invention, after the OBU is removed and then powered on again, the chip on circuit board 2 detects that push-type switch 3 has been triggered to the second state and deletes the confidential data within the chip. Specifically, because push-type switch 3 remains in the second state, the chip can detect that push-type switch 3 has been removed when power is applied again, thereby deleting the confidential data and ensuring the security of the OBU's internal data.

[0040] If the on-board unit needs to be reinstalled, the relevant staff will need to power on the on-board unit and repeat the installation process, and further rewrite the confidential data.

[0041] Thus, with the anti-dismantling device and on-board unit provided by the present invention, after the on-board unit is disassembled, the electromagnetic push rod prevents the anti-dismantling lever from being pressed, making it impossible to illegally reinstall the on-board unit, thereby achieving the anti-dismantling function of the on-board unit. Furthermore, by deleting confidential data when the power is restored, the security of the on-board unit data is protected.

[0042] Another aspect of the present invention further provides a vehicle-mounted unit, which includes the above-mentioned Figures 1 to 4 Anti-tamper device for vehicle-mounted units.

[0043] Thus, with the on-board unit provided by the present invention, after the on-board unit is disassembled, the electromagnet push rod prevents the anti-dismantling lever from being pressed, making it impossible to illegally reinstall the on-board unit, thus achieving the anti-dismantling function of the on-board unit. Furthermore, by deleting confidential data when the power is restored, the security of the on-board unit data is protected.

[0044] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are 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 specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0045] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and are not to be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments without departing from the principles and intent of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-disassembly device applied to a vehicle-mounted unit, characterized in that: include: Anti-tamper rod mounting member (1), circuit board (2), push-type switch (3), anti-tamper rod (4), spring (5) and electromagnet push rod (6); wherein: An accommodating space is formed between the circuit board (2) and the anti-dismantling rod mounting piece (1); The push-type 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-disassembly rod mounting piece (1) comprises a slot (101) recessed into the accommodating space, a mounting through hole is provided in the slot (101), and the mounting through hole is provided corresponding to the push-type switch (3); The anti-dismantle rod (4) comprises a blocking plate (401), a connecting rod (402) and a pressing member (403) connected in sequence, the connecting rod (402) passes through the mounting through hole, the blocking plate (401) is located outside the anti-dismantle rod mounting member (1), 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) from leaving the accommodating 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), and is deformed only between the blocking plate (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) and electrically connected to the circuit board (2). When the vehicle-mounted unit is not installed, the moving iron core extends and is located between the pressing member (403) and the push 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, the moving iron core avoids the space between the pressing member (403) and the push-type switch (3), the anti-dismantling rod (4) moves toward the push-type switch (3), the upper surface of the blocking plate (401) is flush with the outer surface of the anti-dismantling rod mounting member (1), and the blocking plate (401) contacts the vehicle window, the pressing member (403) contacts the push-type switch (3), the push-type switch (3) is triggered to the first state, and the spring (5) contracts; After the vehicle-mounted 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-disassembly rod (4), and the movable iron core of the electromagnet push rod (6) continues to be pushed out and is located between the pressing member (403) and the push-type switch (3), and the push-type switch (3) is triggered to a second state, which is different from the first state.

2. The anti-disassembly device for a vehicle-mounted unit according to claim 1, characterized in that: After the on-board unit is removed and then powered on again, the chip provided on the circuit board (2) detects that the push-type switch (3) is triggered to the second state, and deletes the confidential data in the chip.

3. A vehicle-mounted unit, characterized in that: The invention comprises the anti-disassembly device applied to the vehicle-mounted unit as claimed in claim 1 or 2.

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