ETC vehicle-mounted unit

Abstract

The utility model provides an ETC vehicle-mounted unit, which comprises a vehicle-mounted main body and an anti-dismounting structure, the anti-dismounting structure is installed at one end of the vehicle-mounted main body along a first direction and can rotate around a first central shaft relative to the vehicle-mounted main body, the first central shaft is parallel to the first direction, and the first direction is perpendicular to the front-back direction of the vehicle-mounted main body; and the anti-disassembly structure is in communication connection with the vehicle-mounted main body. According to the ETC vehicle-mounted unit, the anti-dismounting structure is arranged to rotate around the first center shaft relative to the vehicle-mounted main body, and the first center shaft is perpendicular to the front-back direction of the vehicle-mounted main body, so that the mounting surface of the anti-dismounting structure can face different directions under the condition that the directions of the front side and the rear side of the vehicle-mounted main body are not changed; the anti-disassembly structure can be installed at different positions in the motor vehicle, so that the ETC vehicle-mounted unit is diversified in installation mode and wider in application range.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, and more specifically, relates to an ETC vehicle-mounted unit. Background Technology

[0002] In the ETC system, the on-board unit (OBU) installed in the vehicle uses DSRC technology to establish a microwave communication link with the RSU (Road Side Unit), thereby enabling vehicle identification and electronic toll collection without stopping the vehicle.

[0003] Because factors such as the radiating antenna and tamper-proof button need to be considered—for example, the radiating antenna needs to face forward of the vehicle, and the tamper-proof button needs to be in contact with the mounting surface—the installation location of the vehicle unit is rather unique. Vehicle units are generally installed on the windshield or dashboard of a vehicle; however, due to the different installation requirements in different locations, it is difficult for a vehicle unit to be compatible with different installation locations simultaneously. Utility Model Content

[0004] The purpose of this application is to provide an ETC on-board unit to solve the technical problem in the prior art that it is difficult for on-board units to be compatible with different installation locations at the same time.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: an ETC on-board unit is provided, including an on-board body and an anti-tamper structure. The anti-tamper structure is installed at one end of the on-board body along a first direction and is rotatable relative to the on-board body around a first central axis. The first central axis is parallel to the first direction, and the first direction is perpendicular to the front-rear direction of the on-board body. The anti-tamper structure is communicatively connected to the on-board body.

[0006] In some embodiments, the vehicle body has a plurality of first mounting surfaces surrounding the first central axis, and the anti-tamper structure has a second mounting surface; after the anti-tamper structure rotates by a first preset angle, the second mounting surface becomes flush with one of the first mounting surfaces.

[0007] In some embodiments, the anti-tamper structure includes a plurality of first limiting portions surrounding the first central axis, and the vehicle body includes a second limiting portion, the second limiting portion being capable of limiting and cooperating with each of the first limiting portions respectively;

[0008] Alternatively, the anti-tamper structure includes a first limiting part, and the vehicle body includes a plurality of second limiting parts surrounding the first central axis, wherein the first limiting part can respectively engage with each of the second limiting parts for limiting.

[0009] In some embodiments, the vehicle-mounted body includes a guide rod, and the anti-tamper structure includes a guide groove surrounding the first central axis, with the guide rod slidably disposed in the guide groove.

[0010] In some embodiments, the inner peripheral wall of the guide groove is provided with a plurality of limiting protrusions that surround the first central axis and are spaced apart, and the guide rod can respectively form a limiting engagement with each of the limiting protrusions.

[0011] In some embodiments, the vehicle-mounted main body includes a vehicle-mounted box and a rotating shaft protruding from the vehicle-mounted box; the anti-tamper structure includes an anti-tamper box and an anti-tamper component installed in the anti-tamper box; the anti-tamper box has a rotating hole, and the rotating shaft is rotatably engaged with the rotating hole.

[0012] In some embodiments, the tamper-proof housing has a guide groove for guiding the assembly of the rotating shaft, the guide groove extending from a first side of the tamper-proof housing to the rotating hole, the opening size of the guide groove gradually decreasing from the first side to the rotating hole.

[0013] In some embodiments, the tamper-proof housing includes two opposing elastic arms that extend from a first side of the tamper-proof housing to the rotating hole and enclose the guide groove.

[0014] In some embodiments, the tamper-proof box includes a rotating plate and an tamper-proof cover, and the tamper-proof component is installed in the mounting cavity formed by the rotating plate and the tamper-proof cover; the rotating hole and the elastic arm are formed in the rotating plate, the tamper-proof cover is provided with a first stop and a second stop, and at least one side of the elastic arm abuts against the first stop and the second stop respectively.

[0015] In some embodiments, the tamper-evident cover has a snap-fit ​​portion for snapping the tamper-evident component;

[0016] And / or, the tamper-evident cover has a positioning post, the rotating plate has a positioning hole, and the positioning post is inserted into the positioning hole;

[0017] And / or, the tamper-evident cover has a first locking post, the rotating plate has a second locking post, and the tamper-evident cover is locked to the rotating plate.

[0018] The beneficial effects of the ETC on-board unit provided in this application are as follows: by setting the anti-tamper structure to be able to rotate relative to the vehicle body around a first central axis, and the first central axis being perpendicular to the front-rear direction of the vehicle body, the mounting surface of the anti-tamper structure can face different directions while the front and rear positions of the vehicle body remain unchanged. The anti-tamper structure can be installed in different positions inside the vehicle, such as on the windshield and the dashboard, making the installation method of the ETC on-board unit more diverse and its application range wider. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural diagram of the ETC on-board unit provided in the embodiments of this application;

[0021] Figure 2 This is an assembly diagram of the vehicle-mounted main body and rotating plate in the ETC vehicle-mounted unit provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the rotating plate facing the vehicle body in the ETC on-board unit provided in the embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of the rotating plate on the side facing away from the vehicle body in the ETC on-board unit provided in the embodiments of this application;

[0024] Figure 5 A cross-sectional view of the ETC on-board unit provided in this embodiment of the application, facing the vehicle body from one side via a rotating plate;

[0025] Figure 6 This is an exploded view of the anti-tamper structure in the ETC on-board unit provided in the embodiments of this application;

[0026] Figure 7 This is an assembly diagram of the anti-tamper components and anti-tamper cover in the ETC on-board unit provided in this embodiment of the application.

[0027] The following are the labeling elements in the figure:

[0028] 100. Vehicle-mounted main body; 110. First mounting surface; 120. Guide rod; 130. Vehicle-mounted box; 140. Rotating shaft; 141. Mating section; 142. Limiting section; 150. Second limiting part; 200. Anti-tamper structure; 210. Rotating plate; 211. Guide groove; 212. Rotating hole; 213. Guide groove; 214. Elastic arm; 215. Positioning hole; 216. Second locking pin; 217. First limiting part; 2170. Limiting protrusion; 2170a. First limiting protrusion; 21 71a, First limiting surface; 2170b, Second limiting protrusion; 2171b, Second limiting surface; 218, Through groove; 219, Slot; 220, Anti-tamper cover; 221, First stop block; 222, Second stop block; 223, Snap-fit ​​part; 224, Positioning post; 225, First locking post; 230, Anti-tamper component; 231, Anti-tamper circuit board; 232, Trigger button; 240, Second mounting surface; 300, First adhesive piece; 400, Second adhesive piece; X, First direction; Y, Second direction. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0033] Please see Figure 1The ETC on-board unit provided in this application embodiment will now be described. This ETC on-board unit is mainly used to be installed on motor vehicles and uses DSRC technology to establish a microwave communication link with the RSU (Road Side Unit), thereby realizing vehicle identification and electronic toll collection without stopping.

[0034] Please see Figure 1 The ETC on-board unit includes an on-board body 100 and an anti-tamper structure 200. The anti-tamper structure 200 is installed at one end of the on-board body 100 along a first direction X and can rotate relative to the on-board body 100 around a first central axis. The first central axis is parallel to the first direction X and the first direction X is perpendicular to the front-rear direction of the on-board body 100. The anti-tamper structure 200 is communicatively connected to the on-board body 100.

[0035] The front-rear orientation of the vehicle-mounted main body 100 is generally determined by the orientation of its radiating antenna, which needs to face the front of the vehicle. In this application, the front-rear orientation of the vehicle-mounted main body 100 is as follows: Figure 1 As shown, for ease of description, the front-rear direction of the vehicle-mounted main body 100 will be referred to as the front-rear direction in the following text.

[0036] The first central axis is parallel to the first direction X and perpendicular to the front-rear direction. When the anti-tamper structure 200 rotates around the first central axis, the trigger key 232 on the anti-tamper structure 200 also rotates around the first central axis. This allows the trigger key 232 of the anti-tamper structure 200 to face different directions while the front and rear positions of the vehicle body 100 remain unchanged. In other words, the anti-tamper structure 200 can be installed in different positions.

[0037] In this embodiment of the ETC on-board unit, the anti-tamper structure 200 is configured to rotate relative to the vehicle body 100 around a first central axis, and the first central axis is perpendicular to the front-rear direction of the vehicle body 100. This allows the mounting surface of the anti-tamper structure 200 to face different directions while the front and rear orientations of the vehicle body 100 remain unchanged. The anti-tamper structure 200 can be installed in different locations inside the vehicle, such as on the windshield and the dashboard, making the installation method of the ETC on-board unit more diverse and its application range wider.

[0038] In some embodiments, please refer to Figure 1The vehicle-mounted main body 100 has a first dimension along a first direction X, a second dimension along a second direction Y, and a third dimension along a front-rear direction. The first direction X, the second direction Y, and the front-rear direction of the vehicle-mounted main body 100 are mutually perpendicular. The first dimension is larger than the second dimension, and the third dimension is larger than the third dimension. That is, the anti-tamper structure 200 is installed at the end of the vehicle-mounted main body 100 in the direction with the relatively larger dimension. It is understood that in other embodiments of this application, the anti-tamper structure 200 may also be installed at one end of the vehicle-mounted main body 100 along the second direction Y; this is not a unique limitation.

[0039] In some embodiments, please refer to Figure 1 The vehicle-mounted main body 100 has multiple first mounting surfaces 110 surrounding a first central axis, and the anti-disassembly structure 200 has a second mounting surface 240; after the anti-disassembly structure 200 rotates by a first preset angle, the second mounting surface 240 becomes flush with one of the first mounting surfaces 110.

[0040] The second mounting surface 240 of the anti-tamper structure 200 refers to the side of the trigger key 232 of the anti-tamper structure 200 that protrudes. When the second mounting surface 240 is in contact with the surface to be installed, the trigger key 232 retracts and abuts against the surface to be installed; when the second mounting surface 240 is separated from the surface to be installed, the trigger key 232 extends and triggers to realize the anti-tamper alarm.

[0041] The above configuration ensures that, during the assembly of the ETC on-board unit, the second mounting surface 240 of the anti-tamper structure 200 is flush with one of the first mounting surfaces 110 of the vehicle body 100. This makes the overall mounting surface of the ETC on-board unit flush, facilitating the attachment of the ETC on-board unit to the surface to be installed, such as the windshield or dashboard, ensuring a stable and secure attachment. It is understood that in other embodiments of this application, after the anti-tamper structure 200 is rotated, the second mounting surface 240 may not be flush with the first mounting surface 110 or may form an angle with it. In this case, the anti-tamper structure 200 and the vehicle body 100 can be respectively installed on the two uneven or angled surfaces to be installed; this is not a unique limitation.

[0042] In some embodiments, please refer to Figure 1The vehicle-mounted main body 100 is generally rectangular in shape and has four first mounting surfaces 110 connected vertically in sequence. Two of the first mounting surfaces 110 are arranged opposite each other in the front-rear direction, i.e., the front side and the rear side, and the other two first mounting surfaces 110 are arranged opposite each other in the second direction Y. For every 90 degrees rotated, the second mounting surface 240 of the anti-tamper structure 200 becomes flush with one of the first mounting surfaces 110. It can be understood that in other embodiments of this application, the vehicle-mounted main body 100 may also have other shapes, and may have three, five, or more first mounting surfaces 110 surrounding a first central axis. For every 60, 72, or 120 degrees rotated, the first mounting surface 110 becomes flush with one of the second mounting surfaces 240.

[0043] In some embodiments, please refer to Figure 2 The anti-tamper structure 200 includes multiple first limiting portions 217 surrounding a first central axis, and the vehicle-mounted main body 100 includes a second limiting portion 150. The second limiting portion 150 can respectively engage with each of the first limiting portions 217 to limit the anti-tamper structure 200 to different positions along the circumference. Specifically, through the arrangement of multiple first limiting portions 217 and second limiting portions 150, when the anti-tamper structure 200 rotates by a second preset angle, the second limiting portion 150 will engage with one of the first limiting portions 217 to limit the anti-tamper structure 200 to that position, ensuring the stability of the relative position between the anti-tamper structure 200 and the vehicle-mounted main body 100 in the assembled state, that is, ensuring the assembly stability of the ETC vehicle-mounted unit.

[0044] In this application, the number of first limiting portions 217 can be determined based on the second preset angle that the anti-tamper structure 200 needs to rotate each time. For example, if the anti-tamper structure 200 needs to stop at its current position after rotating 45 degrees, the central angle between every two adjacent first limiting portions 217 can be set to 45 degrees; if the anti-tamper structure 200 needs to stop at its current position after rotating 90 degrees, the central angle between every two adjacent first limiting portions 217 can be set to 90 degrees. Furthermore, if the anti-tamper structure 200 needs to rotate one full turn around its first central axis, the first limiting portions 217 can be distributed sequentially and spaced apart along the circumference; if the anti-tamper structure 200 needs to rotate half a turn around its first central axis, the first limiting portions 217 can be sequentially and spaced apart along the half-circumference.

[0045] The first preset angle can be equal to the second preset angle, or the first preset angle can be an integer multiple of the second preset angle. For example, when the second preset angle is equal to the first preset angle, the anti-tamper structure 200 can stay at its current position after rotating by the first preset angle, and at this time the second mounting surface 240 of the anti-tamper structure 200 is flush with one of the first mounting surfaces 110 of the vehicle body 100; when the first preset angle is an integer multiple of the second preset angle, the anti-tamper structure 200 can stay at its current position after rotating by the second preset angle, but at this time the second mounting surface 240 of the anti-tamper structure 200 may form an angle with or be flush with the first mounting surface 110 of the vehicle body 100.

[0046] In one specific embodiment, please refer to Figure 2 The central angle between any two adjacent first limiting portions 217 on the anti-disassembly structure 200 is 45 degrees. Each first limiting portion 217 on the anti-disassembly structure 200 is sequentially spaced along a semicircle surrounding the first central axis. The anti-disassembly structure 200 can stop at its current position after rotating 45 degrees. Furthermore, when the second mounting surface 240 of the anti-disassembly structure 200 is rotated to be flush with the front side, rear side, and one of the first mounting surfaces 110 along the second direction Y of the vehicle body 100, it can also stop at its current position for ease of assembly. It can be understood that in other embodiments of this application, the anti-disassembly structure 200 includes first limiting portions 217, and the vehicle body 100 includes multiple second limiting portions 150 surrounding the first central axis. The first limiting portions 217 can respectively engage with each of the second limiting portions 150 for limiting.

[0047] In some embodiments, please refer to Figure 2 and Figure 3 The vehicle-mounted main body 100 includes a guide rod 120, and the anti-tamper structure 200 includes a guide groove 211 surrounding a first central axis. The guide rod 120 is slidably disposed in the guide groove 211. The guide groove 211 and the guide rod 120 guide the rotational movement of the anti-tamper structure 200 around the first central axis, ensuring the rotational accuracy and smoothness of the anti-tamper structure 200 and preventing the first mounting surface 110 and the second mounting surface 240 from becoming uneven after the anti-tamper structure 200 has rotated.

[0048] Optionally, the guide groove 211 is semi-circular, and the guide rod 120 can slide along the guide groove 211 to guide the anti-tamper structure 200 to perform a semi-circular reciprocating rotational motion. It can be understood that in other embodiments of this application, the guide groove 211 may also be circular, and the guide rod 120 may slide along the guide groove 211 to guide the anti-tamper structure 200 to perform a circular reciprocating rotational motion.

[0049] In some embodiments, please refer to Figure 2 and Figure 3The inner peripheral wall of the guide groove 211 is provided with a plurality of limiting protrusions 2170 that surround the first central axis and are spaced apart. The guide rod 120 can form a limiting engagement with each limiting protrusion 2170. In this embodiment, the rotation of the anti-tamper structure 200 is limited by the guide rod 120 and the limiting protrusions 2170 on the inner peripheral wall of the guide groove 211. That is, the first limiting part 217 includes the limiting protrusions 2170, and the second limiting part 150 includes the guide rod 120. The guide rod 120 can not only be used as a rotation guide for the anti-tamper structure 200, but also as a rotation limiting device for the anti-tamper structure 200, thereby simplifying the limiting structure of the anti-tamper structure 200.

[0050] In some embodiments, please refer to Figure 3 Each limiting protrusion 2170 includes two first limiting protrusions 2170a near the opposite ends of the guide groove 211 and a plurality of second limiting protrusions 2170b located between the two first limiting protrusions 2170a.

[0051] When the guide rod 120 is located at opposite ends of the guide groove 211, the guide rod 120 can only slide in one direction, for example... Figure 3 When the guide rod 120 is at the upper end, it can only slide clockwise; when it is at the lower end, it can only slide counterclockwise. Therefore, the first limiting protrusion 2170a has a first limiting surface 2171a, which is an inclined surface. The guide groove 211 has a central surface surrounding the first central axis. Along the sliding direction of the guide rod 120, the distance from the first limiting surface 2171a to the central surface gradually decreases, thereby restricting the sliding of the guide rod 120. The user only needs to apply driving force to the anti-tamper structure 200 to overcome the limiting force of the first limiting surface 2171a, thus driving the anti-tamper structure 200 to rotate.

[0052] When the guide rod 120 is located between the two ends of the guide groove 211, the guide rod 120 can slide clockwise or counterclockwise. Therefore, the second limiting protrusion 2170b has two opposing second limiting surfaces 2171b. Both second limiting surfaces 2171b are inclined surfaces. The distance from the two second limiting surfaces 2171b to the center surface gradually decreases along the sliding direction of the guide rod 120 to prevent the guide rod 120 from sliding to both sides.

[0053] In some embodiments, please refer to Figure 2 , Figure 5 and Figure 6The vehicle-mounted main body 100 includes a vehicle-mounted box 130 and a rotating shaft 140 protruding from the vehicle-mounted box 130; the anti-tamper structure 200 includes an anti-tamper box and an anti-tamper component 230 installed inside the anti-tamper box; the anti-tamper box has a rotating hole 212, and the rotating shaft 140 is rotatably engaged with the rotating hole 212. A guide rod 120 is formed on the outer end face of the vehicle-mounted main body 100. In this embodiment, since the internal structure of the anti-tamper box is relatively simple, by forming the rotating shaft 140 outside the vehicle-mounted box 130 and inserting it into the anti-tamper box, the insertion of the rotating shaft 140 from the anti-tamper box into the vehicle-mounted box 130 can be avoided from affecting the internal structure of the vehicle-mounted box 130. In addition, by forming the rotating shaft 140 outside the vehicle-mounted box 130, the additional rotating shaft 140 is not required, simplifying the assembly process between the rotating shaft 140 and the vehicle-mounted box 130. It is understood that in other embodiments of this application, the pivot 140 may be formed on the tamper-proof box, and the rotating hole 212 may be formed on the vehicle box 130; in addition, the pivot 140 may be additionally provided and fixed to the tamper-proof box or the vehicle box 130, which is not the only one here.

[0054] In some embodiments, please refer to Figures 2 to 5 The tamper-proof housing has a guide groove 213 for guiding the assembly of the rotating shaft 140. The guide groove 213 extends from the first side of the tamper-proof housing to the rotating hole 212, and the opening size of the guide groove 213 gradually decreases from the first side to the rotating hole 212. During assembly, the rotating shaft 140 is inserted into the guide groove 213 from the first side of the tamper-proof housing, and pushed along the guide groove 213 until the rotating shaft 140 is engaged in the rotating hole 212, thereby completing the assembly of the rotating shaft 140. The guide groove 213 allows the rotating shaft 140 to be inserted into the rotating hole 212 from the side of the tamper-proof housing without needing to be inserted axially into the rotating hole 212. This allows the outer diameter of the rotating shaft 140 outside the rotating hole 212 to be larger than the inner diameter of the rotating hole 212, thus achieving axial positioning of the rotating shaft 140.

[0055] For details, please refer to Figure 5 The rotating shaft 140 includes a mating section 141 and a limiting section 142 connected axially. The mating section 141 extends outward from the outer end face of the vehicle housing 130 along a first direction X. The limiting section 142 is connected to the end of the mating section 141 opposite to the vehicle housing 130. The outer diameter of the mating section 141 is adapted to the inner diameter of the rotating hole 212, and the outer diameter of the limiting section 142 is larger than the outer diameter of the mating section 141. During assembly, the mating section 141 of the rotating shaft 140 is aligned, inserted into the guide groove 213, and engaged in the rotating hole 212, so that the limiting section 142 stops on the end face of the rotating hole 212 opposite to the vehicle housing 130, thereby achieving axial limiting of the rotating shaft 140.

[0056] In some embodiments, please refer to Figures 2 to 5 The tamper-proof housing includes two opposing elastic arms 214 extending from the first side of the housing to a rotating hole 212, forming a guide groove 213. The arrangement of the two elastic arms 214 allows the minimum distance between them to be designed to be smaller than the outer diameter of the rotating shaft 140, specifically smaller than the outer diameter of the mating section 141 of the rotating shaft 140. During assembly, the mating section 141 presses against the two elastic arms 214, allowing it to engage with the rotating hole 212. Once the mating section 141 is in place, the minimum distance between the two elastic arms 214, being smaller than the outer diameter of the mating section 141, makes it difficult for it to slip out of the rotating hole 212, preventing detachment and ensuring the secure assembly of the rotating shaft 140.

[0057] In one specific embodiment, the end faces of the two elastic arms 214 are arc-shaped. When the mating section 141 is inserted into the rotating hole 212, the end faces of the two elastic arms 214 serve as part of the inner wall of the rotating hole 212. The end faces of the two elastic arms 214 respectively form a shaft hole fit with the mating section 141, while also preventing the mating section 141 from disengaging.

[0058] In some embodiments, please refer to Figures 3 to 5 The tamper-proof box also includes two through slots 218 arranged opposite to each other. The two through slots 218 are respectively located on the side of the elastic arm 214 away from the guide slot 213. That is, the guide slot 213 and the through slot 218 are respectively provided on the opposite sides of each elastic arm 214, so that the elastic arm 214 has elasticity and is easy to deform after being subjected to force.

[0059] For details, please refer to Figures 3 to 5 The through groove 218 is connected to the rotating hole 212, which means that the end of the elastic arm 214 facing away from the first side is suspended, thus ensuring the elasticity of the elastic arm 214.

[0060] In some embodiments, please refer to Figures 5 to 7 The tamper-proof housing includes a rotating plate 210 and an tamper-proof cover 220. An tamper-proof component 230 is installed in the mounting cavity formed by the rotating plate 210 and the tamper-proof cover 220. A rotating hole 212 and an elastic arm 214 are formed in the rotating plate 210. The tamper-proof cover 220 has a first stop 221 and a second stop 222 protruding from it. At least one elastic arm 214 has its opposite sides abutting against the first stop 221 and the second stop 222, respectively. The first stop 221 and the second stop 222 enhance the structural strength of the elastic arm 214, preventing deformation and thus preventing the rotating shaft 140 from disengaging from the rotating hole 212.

[0061] Please see Figure 5One of the elastic arms 214 has a first stop 221 and a second stop 222 on opposite sides, respectively. Understandably, in other embodiments, the first stop 221 and the second stop 222 may also be abutted on opposite sides of both elastic arms 214.

[0062] Specifically, the first stop 221 is disposed in the guide groove 213 and abuts against one side of the elastic arm 214. The first stop 221 is thin plate-shaped and fits snugly against the elastic arm 214. The second stop 222 is disposed in the through groove 218 and abuts against the other side of the elastic arm 214. The second stop 222 fits against the outer peripheral surface of the limiting section 142 of the rotating shaft 140 to ensure the rotational stability of the anti-disassembly structure 200 and the vehicle body 100.

[0063] In some embodiments, please refer to Figure 7 The tamper-evident cover 220 has a snap-fit ​​part 223 for snapping the tamper-evident component 230 into place. The tamper-evident component 230 is snapped into place by the snap-fit ​​part 223 to achieve assembly of the tamper-evident component 230 on the tamper-evident cover 220.

[0064] Specifically, the anti-tamper component 230 includes an anti-tamper circuit board 231 and a trigger button 232 disposed on the anti-tamper circuit board 231. The latching part 223 has a first limiting block 2231 and a second limiting block 2232. The anti-tamper circuit board 231 is inserted between the first limiting block 2231 and the second limiting block 2232. Specifically, one side of the anti-tamper circuit board 231 abuts against the first limiting block 2231, and the other side of the anti-tamper circuit board 231 abuts against the second limiting block 2232.

[0065] Specifically, there are two first limiting blocks 2231 and two second limiting blocks 2232. The two first limiting blocks 2231 are respectively located on opposite sides of the tamper cover 220 along the second direction Y, and the two second limiting blocks 2232 are located between the two first limiting blocks 2231.

[0066] In addition, please see Figure 4 The rotating plate 210 is also provided with a slot 219 corresponding to the anti-tamper circuit board 231. During assembly, the anti-tamper circuit board 231 is inserted into the slot 219. The insertion and cooperation between the anti-tamper circuit board 231 and the slot 219 can avoid structural interference between the anti-tamper circuit board 231 and the rotating plate 210, and at the same time improve the connection strength between the anti-tamper circuit board 231 and the rotating plate 210, ensuring that the two rotate synchronously.

[0067] In some embodiments, please refer to Figure 5 and Figure 7The tamper-evident cover 220 has a positioning post 224, and the rotating plate 210 has a positioning hole 215. The positioning post 224 and the positioning hole 215 are inserted and engaged to form an assembly positioning between the rotating plate 210 and the tamper-evident cover 220.

[0068] In some embodiments, please refer to Figure 5 and Figure 7 The tamper-evident cover 220 has a first locking post 225, and the rotating plate 210 has a second locking post 216. The tamper-evident cover 220 and the rotating plate 210 are locked together, thereby forming a lock between the rotating plate 210 and the tamper-evident cover 220.

[0069] When assembling the anti-tamper structure 200 of this application, the rotating plate 210 is first assembled with the vehicle box 130. Specifically, the mating section 141 of the rotating shaft 140 is inserted into the rotating hole 212 via the guide groove 213, and the guide rod 120 is slid into the guide groove 211. Then, the anti-tamper component 230 is installed into the anti-tamper cover 220. Finally, the anti-tamper cover 220 and the rotating plate 210 are positioned by the positioning pin 224 and the positioning hole 215, and the anti-tamper cover 220 and the rotating plate 210 are locked together by screws passing through the first locking pin 225 and the second locking pin 216 respectively, thereby completing the assembly.

[0070] In some embodiments, please refer to Figure 1 When assembling the ETC on-board unit, a second adhesive piece 400 can be attached to the second mounting surface 240 of the anti-tamper structure 200, and a first adhesive piece 300 can be attached to the first mounting surface 110 corresponding to the on-board body 100. This allows the on-board body 100 and the anti-tamper structure 200 to be attached to the mounting surfaces via the first adhesive piece 300 and the second adhesive piece 400, respectively, making the assembly simple and reliable.

[0071] The first adhesive component 300 and the second adhesive component 400 can be double-sided adhesive.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An ETC on-board unit, characterized in that, The device includes a vehicle-mounted main body and an anti-tamper structure. The anti-tamper structure is installed at one end of the vehicle-mounted main body along a first direction and is rotatable relative to the vehicle-mounted main body around a first central axis. The first central axis is parallel to the first direction, and the first direction is perpendicular to the front-rear direction of the vehicle-mounted main body. The anti-tamper structure is communicatively connected to the vehicle-mounted main body.

2. The ETC on-board unit as described in claim 1, characterized in that, The vehicle-mounted main body has multiple first mounting surfaces surrounding the first central axis, and the anti-disassembly structure has a second mounting surface; after the anti-disassembly structure rotates by a first preset angle, the second mounting surface becomes flush with one of the first mounting surfaces.

3. The ETC on-board unit as described in claim 1, characterized in that, The anti-tamper structure includes multiple first limiting parts surrounding the first central axis, and the vehicle body includes a second limiting part, which can respectively limit and cooperate with each of the first limiting parts; Alternatively, the anti-tamper structure includes a first limiting part, and the vehicle body includes a plurality of second limiting parts surrounding the first central axis, wherein the first limiting part can respectively engage with each of the second limiting parts for limiting.

4. The ETC on-board unit as described in claim 1, characterized in that, The vehicle-mounted main body includes a guide rod, and the anti-tamper structure includes a guide groove surrounding the first central axis, with the guide rod slidably disposed in the guide groove.

5. The ETC on-board unit as described in claim 4, characterized in that, The inner peripheral wall of the guide groove is provided with a plurality of limiting protrusions that surround the first central axis and are spaced apart, and the guide rod can respectively form a limiting engagement with each of the limiting protrusions.

6. The ETC on-board unit as described in any one of claims 1 to 5, characterized in that, The vehicle-mounted main body includes a vehicle-mounted box and a rotating shaft protruding from the vehicle-mounted box; the anti-tamper structure includes an anti-tamper box and an anti-tamper component installed inside the anti-tamper box; the anti-tamper box has a rotating hole, and the rotating shaft is rotatably engaged with the rotating hole.

7. The ETC on-board unit as described in claim 6, characterized in that, The tamper-proof housing has a guide groove for guiding the assembly of the rotating shaft. The guide groove extends from a first side of the tamper-proof housing to the rotating hole, and the opening size of the guide groove gradually decreases from the first side to the rotating hole.

8. The ETC on-board unit as described in claim 7, characterized in that, The tamper-proof box includes two opposing elastic arms that extend from the first side of the tamper-proof box to the rotating hole, and the two elastic arms enclose to form the guide groove.

9. The ETC on-board unit as described in claim 8, characterized in that, The tamper-proof box includes a rotating plate and an tamper-proof cover. The tamper-proof component is installed in the mounting cavity formed by the rotating plate and the tamper-proof cover. The rotating hole and the elastic arm are formed in the rotating plate. The tamper-proof cover is provided with a first stop and a second stop. At least one side of the elastic arm abuts against the first stop and the second stop, respectively.

10. The ETC on-board unit as described in claim 9, characterized in that, The tamper-evident cover has a snap-fit ​​portion for snapping the tamper-evident component into place; And / or, the tamper-evident cover has a positioning post, the rotating plate has a positioning hole, and the positioning post is inserted into the positioning hole; And / or, the tamper-evident cover has a first locking post, the rotating plate has a second locking post, and the tamper-evident cover is locked to the rotating plate.

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