Protective shell assembly, anti-disassembly structure and ETC vehicle-mounted unit

Abstract

The utility model provides a protective shell assembly, an anti-disassembly structure and an ETC vehicle-mounted unit, the ETC vehicle-mounted unit comprises a vehicle-mounted main body and the anti-disassembly structure, and the anti-disassembly structure is in communication connection with the vehicle-mounted main body; the anti-disassembly structure comprises an anti-disassembly assembly and a protective shell assembly. The protective housing assembly comprises: a main housing having a mounting port; the protection part comprises a telescopic part and an attaching part formed on the periphery of the telescopic part, the attaching part is attached to the main shell, the telescopic part right faces the mounting opening and protrudes outwards relative to the mounting opening, and the telescopic part is elastic; and the waterproof structure is used for realizing sealing between the fitting part and the main shell. Sealing between the triggering piece of the anti-disassembly assembly and the main shell can be formed through the telescopic part, the attaching part and the waterproof structure, and waterproof and dustproof effects are achieved.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, and more specifically, relates to a protective housing assembly, an anti-tamper structure, and 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] Current vehicle-mounted units possess anti-disassembly capabilities using mechanical push-button switches. Furthermore, the trigger element 210 must protrude from the edge of the product body, allowing it to move during installation and removal to achieve the mechanical triggering effect. This unique structural design makes it difficult to achieve complete protection for the entire vehicle-mounted unit. Utility Model Content

[0004] The purpose of this application is to provide a protective housing assembly, an anti-tamper structure, and an ETC on-board unit to solve the technical problem that existing ETC on-board units with anti-tamper functions are not easy to protect.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: Firstly, a protective housing assembly is provided, comprising:

[0006] Main housing, with mounting opening;

[0007] The protective component includes a telescopic portion and a fitting portion formed around the periphery of the telescopic portion, the fitting portion being attached to the main housing, the telescopic portion facing the mounting opening and protruding outward relative to the mounting opening, and the telescopic portion being elastic;

[0008] A waterproof structure is provided to achieve a seal between the fitting portion and the main housing.

[0009] In some embodiments, the telescopic portion and the fitting portion are integrally made of a soft material.

[0010] In some embodiments, the telescopic portion includes a telescopic unit;

[0011] Alternatively, the telescopic part includes at least two telescopic units connected sequentially along the depth direction of the mounting opening, and the inner radial direction of each telescopic unit gradually decreases away from the mounting opening.

[0012] In some embodiments, the fitting portion is attached to the outer side of the main housing; or, the fitting portion is attached to the inner side of the main housing.

[0013] In some embodiments, the outer side of the main housing is recessed with a receiving groove, the receiving groove is connected to the mounting opening and surrounds the mounting opening, the fitting part is housed in the receiving groove, and the fitting part is attached to the bottom wall of the receiving groove;

[0014] Alternatively, the inner side of the main housing is recessed with a receiving groove, the receiving groove is connected to the mounting port and surrounds the mounting port, the fitting part is housed in the receiving groove, and the fitting part is attached to the top wall of the receiving groove.

[0015] In some embodiments, the waterproof structure includes at least one first waterproof layer that is elastically abutted between the bonding portion and the main housing.

[0016] In some embodiments, the waterproof structure includes at least one second waterproof layer covering the bonding portion and the main housing.

[0017] In some embodiments, the waterproof structure includes at least one first waterproof layer and at least one second waterproof layer, wherein the first waterproof layer is elastically abutting between the bonding portion and the main housing, and the second waterproof layer covers the bonding portion and the main housing.

[0018] Secondly, this application also provides an anti-disassembly structure, including an anti-disassembly component and the aforementioned protective housing component, wherein the anti-disassembly component is installed in the mounting cavity of the main housing, and the trigger of the anti-disassembly component is correspondingly housed in the telescopic part.

[0019] Thirdly, this application also provides an ETC on-board unit, including an on-board body and the aforementioned anti-tamper structure, wherein the anti-tamper structure is communicatively connected to the on-board body.

[0020] The beneficial effects of the protective housing assembly, anti-tamper structure, and ETC on-board unit provided in this application are as follows: By providing a protective component at the mounting opening of the main housing, the protective component includes a telescopic part and a fitting part formed around the periphery of the telescopic part. The fitting part is attached to the main housing, and the telescopic part faces the mounting opening and protrudes outward relative to the mounting opening. A waterproof structure is used to achieve a seal between the fitting part and the main housing. With this configuration, when the anti-tamper assembly is installed in the mounting cavity of the main housing, and the trigger of the anti-tamper assembly extends from the mounting opening to the telescopic part, a seal is formed between the trigger and the main housing through the telescopic part, the fitting part, and the waterproof structure, achieving waterproofing and dustproofing. In addition, by making the telescopic part elastic, the telescopic part can retract inward with the trigger to be in a ready-to-trigger state, and the telescopic part can also extend outward with the trigger to achieve triggering, ensuring the triggering function of the trigger. Attached Figure Description

[0021] 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.

[0022] Figure 1 A three-dimensional structural diagram of the ETC on-board unit provided in the embodiments of this application;

[0023] Figure 2 An exploded view of the ETC on-board unit provided in an embodiment of this application;

[0024] Figure 3 A cross-sectional view of the ETC on-board unit provided in an embodiment of this application;

[0025] Figure 4 An enlarged cross-sectional view of the mounting port of the protective housing assembly provided in the embodiments of this application;

[0026] Figure 5 This is a schematic diagram of the structure of the upper cover in the protective housing assembly provided in the embodiments of this application.

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

[0028] 100. Protective housing assembly; 110. Main housing; 111. Base; 112. Top cover; 1121. Mounting port; 1122. Receiving groove; 1123. Groove; 113. Sealing ring; 114. Screw; 115. Mounting cavity; 120. Protective component; 121. Fitting part; 122. Telescopic part; 1221. Telescopic unit; 1221a. First telescopic unit; 1221b. Second telescopic unit; 1221c. Third telescopic unit; 1222. Receiving cavity; 1223. First connecting section; 1224. Second connecting section; 130. First waterproof layer; 140. Second waterproof layer; 200. Anti-tamper assembly; 210. Trigger. 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] With the development of ETC on-board units, the application scenarios of ETC on-board units are gradually becoming more diverse. They can be applied not only to passenger cars or commercial vehicles, but also to vehicles such as motorcycles. In some application scenarios, such as motorcycle usage scenarios, the environment is relatively harsh, requiring higher protection levels for the equipment.

[0034] Therefore, this application provides a protective housing assembly 100 with better protective effect. Please refer to... Figures 1 to 4 The protective housing assembly 100 provided in this application embodiment will now be described. This protective housing assembly 100 is used to provide waterproofing, dustproofing, and other protection for the circuit assembly, which includes at least a telescopic structure that needs to extend out of the housing. The circuit assembly can be a button structure, a button extension trigger structure, a linkage structure, a transmission structure, or an anti-tamper assembly 200, etc. This application will use the protection provided by the anti-tamper assembly 200 as an example for description.

[0035] The protective housing assembly 100 includes a main housing 110, a protective component 120, and a waterproof structure. The main housing 110 has a mounting opening 1121. The protective component 120 includes a telescopic portion 122 and a fitting portion 121. The fitting portion 121 is formed on the periphery of the telescopic portion 122 and is attached to the main housing 110. The telescopic portion 122 faces the mounting opening 1121 and protrudes outward relative to the mounting opening 1121. The telescopic portion 122 is elastic. The waterproof structure is used to achieve a seal between the fitting portion 121 and the main housing 110.

[0036] The fitting portion 121 is formed around the periphery of the telescopic portion 122, meaning it extends outward from the periphery of the telescopic portion 122. The fitting portion 121 is integrally connected to the telescopic portion 122 and surrounds the outer periphery of the telescopic portion 122. The fitting portion 121 is mainly used to install the protective component 120 on the main housing 110. Specifically, the fitting portion 121 is attached to the inner or outer side of the main housing 110. The inner side of the main housing 110 refers to the side of the main housing 110 facing the mounting cavity 115, and the outer side of the main housing 110 refers to the side of the main housing 110 away from its mounting cavity 115.

[0037] The telescopic part 122 faces the mounting port 1121 and protrudes outward relative to the mounting port 1121. That is, the telescopic part 122 can close the mounting port 1121. The telescopic part 122 protrudes outward to form a receiving cavity 1222. The receiving cavity 1222 is used to accommodate the trigger 210 of the anti-tamper component 200, so that the trigger 210 can protrude outside the mounting port 1121 when it is triggered. After the trigger 210 is triggered, the entire trigger 210 is isolated from the external air, dust and moisture, achieving a protective effect.

[0038] It should be noted that the telescopic part 122 is elastic. This can be achieved by using an elastic material, allowing the telescopic part 122 to be elastic under external force; or by designing the shape and thickness of the telescopic part 122 to ensure its elasticity under external force. When the anti-tamper assembly 200 is assembled into the mounting cavity 115 of the main housing 110, and the trigger 210 of the anti-tamper assembly 200 extends from the mounting port 1121 to be accommodated within the receiving cavity 1222 of the telescopic part 122, due to the elasticity of the telescopic part 122, both the trigger 210 and the telescopic part 122 can retract when the main housing 110 abuts against the external mounting surface, thus remaining in a non-triggered state. When the main housing 110 separates from the external mounting surface, the trigger 210 can push the telescopic part 122 outward to trigger the connection.

[0039] Additionally, it should be noted that the waterproof structure is used to achieve a seal between the fitting part 121 and the main housing 110. This waterproof structure can be located between the upper side of the fitting part 121 and the inner side of the main housing 110, or between the lower side of the fitting part 121 and the outer side of the main housing 110; alternatively, it can be located between the peripheral side of the fitting part 121 and the main housing 110; or it can cover the upper side of the fitting part 121 and the outer side of the main housing 110, or the lower side of the fitting part 121 and the inner side of the main housing 110. Here, the lower side of the fitting part 121 refers to the side of the fitting part 121 facing the mounting cavity 115, the upper side of the fitting part 121 refers to the side of the fitting part 121 away from the mounting cavity 115, and the peripheral side of the fitting part 121 refers to the side of the fitting part 121 connecting the upper and lower sides.

[0040] The protective housing assembly 100 in this embodiment of the application provides a protective member 120 at the mounting port 1121 of the main housing 110. The protective member 120 includes a telescopic part 122 and a fitting part 121 formed around the periphery of the telescopic part 122. The fitting part 121 is attached to the main housing 110. The telescopic part 122 faces the mounting port 1121 and protrudes outward relative to the mounting port 1121. A waterproof structure is used to achieve a seal between the fitting part 121 and the main housing 110. With this configuration, when the anti-tamper assembly 200 is installed in the mounting cavity 115 of the main housing 110, and the trigger 210 of the anti-tamper assembly 200 extends from the mounting port 1121 to the telescopic part 122, a seal between the trigger 210 and the main housing 110 can be formed by the telescopic part 122, the fitting part 121 and the waterproof structure, thereby achieving waterproofing and dustproofing. Furthermore, by making the telescopic part 122 elastic, the telescopic part 122 can retract inward with the trigger member 210 to be in a ready-to-trigger state, and the telescopic part 122 can also extend outward with the trigger member 210 to achieve triggering, thus ensuring the triggering function of the trigger member 210.

[0041] In some embodiments, please refer to Figure 3 and Figure 4The telescopic portion 122 and the fitting portion 121 are integrally made of a soft material. Soft materials typically refer to materials with high elasticity and plasticity, capable of significant deformation under external force and returning to their original shape after the force is removed. For example, the telescopic portion 122 and the fitting portion 121 can be integrally connected using rubber or silicone, meaning the protective component 120 is integrally made of rubber or silicone. In this embodiment, by integrally making the telescopic portion 122 and the fitting portion 121, the manufacturing process of the protective component 120 is simplified, and the sealing performance between the telescopic portion 122 and the fitting portion 121 is high. Furthermore, it also ensures good elasticity of the telescopic portion 122, allowing it to expand and contract, and good elasticity of the fitting portion 121, facilitating a seal. It is understood that in other embodiments of this application, the telescopic part 122 may also be made of a soft material, while the bonding part 121 may be made of other plastic materials. Then, the telescopic part 122 and the bonding part 121 may be integrally connected by secondary injection molding, bonding or laser welding. This is not a unique limitation.

[0042] In some embodiments, please refer to Figure 3 and Figure 4 The telescopic part 122 includes at least two telescopic units 1221 connected sequentially along the depth direction of the mounting opening 1121, and the inner radial direction of each telescopic unit 1221 gradually decreases away from the mounting opening 1121.

[0043] The depth direction of the mounting port 1121 refers to the direction from the inner port of the mounting port 1121 that connects to the mounting cavity 115 to the outer port of the mounting port 1121 that is away from the mounting cavity 115.

[0044] The number of telescopic units 1221 can be two, three, or more, depending on the required extension length of the actual trigger 210. Taking three telescopic units 1221 as an example, for ease of description, each telescopic unit 1221 is referred to as the first telescopic unit 1221a, the second telescopic unit 1221b, and the third telescopic unit 1221c. The first telescopic unit 1221a is away from the mounting port 1121, and the third telescopic unit 1221c is close to the mounting port 1121. When the first telescopic unit 1221a, the second telescopic unit 1221b, and the third telescopic unit 1221c retract, the first telescopic unit 1221a retracts into the second telescopic unit 1221b, and the second telescopic unit 1221b retracts into the third telescopic unit 1221c, so that the retracted first telescopic unit 1221a, the second telescopic unit 1221b, and the third telescopic unit 1221c are distributed sequentially from the inside to the outside.

[0045] Specifically, the first telescopic unit 1221a and the second telescopic unit 1221b are connected by a first connecting section 1223, and the second telescopic unit 1221b and the third telescopic unit 1221c are connected by a second connecting section 1224. The first connecting section 1223 is flat and perpendicular to the depth direction of the mounting opening 1121, while the second connecting section 1224 is arc-shaped and transitionally connects the second telescopic unit 1221b and the third telescopic unit 1221c.

[0046] In other embodiments of this application, the telescopic part 122 may also include a telescopic unit 1221, which is made elastic by means of the structural material properties of the telescopic unit 1221.

[0047] In some embodiments, the telescopic portion 122 has a thin-walled structure, and the thickness of the telescopic portion 122 is uniformly distributed. It is understood that in other embodiments, the thickness of the telescopic portion 122 at various points can also be adjusted according to actual needs.

[0048] In some embodiments, please refer to Figure 3 and Figure 4 To accommodate the shape of the trigger 210, the third telescopic unit 1221c has a rectangular cross-section and is fitted onto the outer periphery of the top end of the trigger 210. The second telescopic unit 1221b has a square cross-section and is fitted onto the telescopic portion of the trigger 210. The first telescopic unit 1221a is arc-shaped and is fitted onto the tip of the trigger 210. The arc shape reduces scratches between the tip and the external mounting surface.

[0049] In some embodiments, please refer to 3 and Figure 4 The fitting part 121 is attached to the outer side of the main housing 110. During assembly, the fitting part 121 is directly attached to the outer side of the main housing 110 from the outside. In other embodiments of this application, the fitting part 121 can also be attached to the inner side of the main housing 110. During assembly, the fitting part 121 is inserted into the mounting cavity 115 of the main housing 110 through the mounting port 1121 and attached to the inner side of the main housing 110. The telescopic part 122 extends outward through the mounting port 1121.

[0050] In some embodiments, please refer to Figures 3 to 5The outer surface of the main housing 110 is recessed with a receiving groove 1122, which communicates with and surrounds the mounting opening 1121. The fitting part 121 is housed in the receiving groove 1122 and is attached to the bottom wall of the receiving groove 1122. The receiving groove 1122 serves two purposes: firstly, it accommodates the fitting part 121 to improve the connection strength between the fitting part 121 and the main housing 110; secondly, it facilitates the installation of a waterproof structure for better protection; and thirdly, it extends the water path from the outside of the protective housing assembly 100 to the mounting cavity 115, thereby improving the protective effect. In other embodiments, a receiving groove 1122 may be recessed on the inner side of the main housing 110. The receiving groove 1122 communicates with and surrounds the mounting port 1121. The fitting part 121 is housed in the receiving groove 1122 and is attached to the top wall of the receiving groove 1122.

[0051] In some embodiments, please refer to Figure 3 and Figure 4 The waterproof structure includes at least one first waterproof layer 130, which elastically abuts against the bonding portion 121 and the main housing 110. Specifically, the first waterproof layer 130 is housed in the receiving groove 1122, and abuts against the lower side of the bonding portion 121 and the bottom wall of the receiving groove 1122.

[0052] The number of first waterproof layers 130 can be one or more. When the number of first waterproof layers 130 is multiple, the materials of each first waterproof layer 130 can be the same or different. For example, adhesive can be applied between the bonding portion 121 and the bottom wall of the receiving groove 1122. After the adhesive cures, the first waterproof layer 130 is formed, and the bonding portion 121 can be bonded to the bottom wall of the receiving groove 1122 by the adhesive. Alternatively, at least one soft adhesive layer can be provided between the bonding portion 121 and the bottom wall of the receiving groove 1122, and then adhesive can be applied between the soft adhesive layer and the bottom wall of the receiving groove 1122, and adhesive can also be applied between the soft adhesive layer and the bonding portion 121 to form multiple first waterproof layers 130. In this embodiment, at least one first waterproof layer 130 is used to form a seal between the upper side of the bonding portion 121 and the main housing 110. Understandably, in the embodiment where the fitting portion 121 is attached to the inner side of the main housing 110, the first waterproof layer 130 is housed in the receiving groove 1122, and the first waterproof layer 130 abuts between the upper side of the fitting portion 121 and the top wall of the receiving groove 1122.

[0053] In some embodiments, please refer to Figure 3 and Figure 4 The waterproof structure includes at least one second waterproof layer 140, which covers the lower side of the bonding portion 121 and the outer side of the main housing 110.

[0054] The second waterproof layer 140 can be one or more layers; when the second waterproof layer 140 is multiple layers, each second waterproof layer 140 is stacked sequentially. For example, a waterproof layer with double-sided adhesive can be provided to facilitate the bonding and fixing of the protective housing assembly 100 to the external mounting surface; or, one or more soft adhesive layers can be provided, and then glue can be applied to the outermost soft adhesive layer to bond it to the external mounting surface.

[0055] In this embodiment, the provision of at least one second waterproof layer 140 can prevent external moisture or dust from entering the mounting cavity 115 of the main housing 110 through the gap between the lower side of the adhesive part 121 and the outer side of the main housing 110, thereby achieving waterproof and dustproof effects. It can be understood that in other embodiments, when the adhesive part 121 is attached to the inner side of the main housing 110, the second waterproof layer 140 covers the upper side of the adhesive part 121 and the inner side of the main housing 110.

[0056] In some embodiments, please refer to Figure 3 and Figure 4 The waterproof structure includes at least one first waterproof layer 130 and at least one second waterproof layer 140. The first waterproof layer 130 elastically abuts against the bottom wall of the fitting portion 121 and the receiving groove 1122, and the second waterproof layer 140 covers the lower side of the fitting portion 121 and the outer side of the main housing 110. This arrangement achieves double-layer protection by forming seals on the inner and outer sides of the fitting portion 121 within the main housing 110, resulting in better protection. In other embodiments, the first waterproof layer 130 may also elastically abut against the top wall of the fitting portion 121 and the receiving groove 1122, and the second waterproof layer 140 may cover the upper side of the fitting portion 121 and the inner side of the main housing 110.

[0057] In some embodiments, please refer to Figures 3 to 5 The outer surface of the main housing 110 is recessed with a groove 1123, which surrounds the receiving groove 1122. The second waterproof layer 140 is at least partially housed in the groove 1123. The groove 1123 can limit the second waterproof layer 140 to a certain extent, and also increases the length of the water path from the outside to the inside, thereby enhancing the protective effect.

[0058] In some embodiments, please refer to Figure 2 and Figure 3The main housing 110 includes a base 111 and a top cover 112. The top cover 112 is mounted on the base 111, and the top cover 112 and the base 111 together form a mounting cavity 115. A mounting opening 1121 is formed in the top cover 112. Specifically, the top cover 112 and the base 111 can be positioned by positioning pins and locked by screws 114. In addition, a sealing ring 113 abuts between the top cover 112 and the base 111 to form a seal between the top cover 112 and the base 111. Understandably, in other embodiments, the top cover 112 and the base 111 can also be sealed by applying adhesive and curing it.

[0059] The groove 1123 forms the top cover 112, and the periphery of the groove 1123 extends to the periphery of the top cover 112. That is, the size of the groove 1123 is large enough to make the area of ​​the second waterproof layer 140 large enough, further increasing the water path and improving the protection level.

[0060] In other embodiments of this application, the waterproof structure further includes a third waterproof layer disposed between the second waterproof layer 140 and the bonding portion 121. By adding a third waterproof layer between the bonding portion 121 and the second waterproof layer 140, the protective effect between the main housing 110 and the protective member 120 can be enhanced.

[0061] Specifically, the third waterproof layer can be a waterproof layer formed by applying glue and curing, or it can be a soft adhesive layer with double-sided adhesive.

[0062] Specifically, the third waterproof layer can be housed in the receiving groove 1122.

[0063] In some other embodiments of this application, a fourth waterproof layer is affixed to the outer surface of the telescopic portion 122. This fourth waterproof layer does not affect the elasticity of the telescopic portion 122 and increases the protection level of the protective housing assembly 100. Furthermore, in other embodiments, a waterproof layer may also be provided on the mating surface of the main housing 110 used to fit with the external mounting surface; this is not a limiting factor.

[0064] Secondly, please refer to Figures 1 to 3 This application embodiment also provides an anti-disassembly structure, including an anti-disassembly component 200 and the aforementioned protective housing component 100. The anti-disassembly component 200 is installed in the mounting cavity 115 of the main housing 110, and the trigger element 210 of the anti-disassembly component 200 is correspondingly housed in the telescopic part 122. In this embodiment, the anti-disassembly structure, through the provision of the aforementioned protective housing component 100, achieves good protective effect.

[0065] Thirdly, please refer to Figures 1 to 3This application also provides an ETC on-board unit, including an on-board body and the aforementioned anti-tamper structure, wherein the anti-tamper structure is communicatively connected to the on-board body. The ETC on-board unit in this embodiment, through the aforementioned anti-tamper structure, achieves better protection.

[0066] In some embodiments, the tamper-proof structure is mechanically connected to and communicates with the vehicle body. In other embodiments, the tamper-proof structure and the vehicle body may be independently configured and communicatively connected.

[0067] 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. A protective housing assembly, characterized by, The application relates to a protective shell assembly. The protective shell assembly comprises a main shell, a protection piece and a waterproof structure. The protection piece comprises a telescopic part and a fitting part formed on the periphery of the telescopic part. The fitting part is attached to the main shell.

2. The protective enclosure assembly of claim 1, wherein, The telescopic part is opposite to the mounting port and protrudes outward relative to the mounting port.

3. The protective enclosure assembly of claim 1, wherein, The telescopic part is made of soft material. The telescopic part comprises one telescopic unit.

4. The protective enclosure assembly of claim 1, wherein, Alternatively, the telescopic part comprises at least two telescopic units connected in sequence along the depth direction of the mounting port.

5. The protective enclosure assembly of claim 1, wherein, The outer side of the main housing is concavely provided with a containing groove, which is communicated with and surrounds the mounting port, and the fitting part is received in the containing groove and is attached to the bottom wall of the containing groove ； The inner diameter of each telescopic unit gradually decreases away from the direction of the mounting port.

6. A protective enclosure assembly as claimed in any one of claims 1 to 5, wherein, The fitting part is attached to the outer side of the main shell.

7. A protective enclosure assembly as claimed in any one of claims 1 to 5, wherein, Alternatively, the fitting part is attached to the inner side of the main shell.

8. A protective enclosure assembly as claimed in any one of claims 1 to 5, wherein, Alternatively, the inner side of the main shell is concave and provided with a receiving groove.

9. A tamper-evident structure characterised in that The receiving groove is in communication with the mounting port and surrounds the mounting port.

10. An ETC on-board unit characterized by comprising: The fitting part is received in the receiving groove. The fitting part is attached to the top wall of the receiving groove. The waterproof structure comprises at least one first waterproof layer. The first waterproof layer is elastically abutted between the fitting part and the main shell. The waterproof structure comprises at least one second waterproof layer. The second waterproof layer covers the fitting part and the main shell. The waterproof structure comprises at least one first waterproof layer and at least one second waterproof layer. The first waterproof layer is elastically abutted between the fitting part and the main shell. The second waterproof layer covers the fitting part and the main shell. The protective shell assembly further comprises a tamper-proof assembly. The tamper-proof assembly is installed in the mounting cavity of the main shell. The trigger of the tamper-proof assembly is correspondingly received in the telescopic part. The tamper-proof assembly further comprises a communication device. The communication device is in communication connection with the vehicle body.

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