Shielding structure of vehicle-mounted camera

Abstract

The utility model provides a vehicle-mounted camera shielding structure, and the structure comprises a housing assembly which is used for fixing a lens of a vehicle-mounted camera and providing structural support; the shell assembly is fixedly connected with the printed circuit board assembly; the shielding cover assembly is arranged between the shell assembly and the printed circuit board assembly, the shielding cover assembly surrounds the printed circuit board assembly to form a shielding cavity, and the shielding cover assembly is in electrical contact with a copper laying area on the printed circuit board assembly; the electromagnetic interference isolation module is used for isolating electromagnetic interference between the printed circuit board assembly and the outside; and the wire harness connector sequentially penetrates through the shell assembly and the shielding cover assembly, is electrically connected with the printed circuit board assembly and is used for transmitting a signal of a vehicle-mounted camera to a control system of a vehicle. The shielding cover assembly surrounds the printed circuit board assembly to form the shielding cavity, so that all-directional electromagnetic shielding of the PCBA is realized, electromagnetic interference is effectively isolated, and the stability and reliability of a vehicle-mounted camera signal are ensured.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle-mounted camera technology, and in particular to a shielding structure for vehicle-mounted cameras. Background Technology

[0002] In modern automotive technology, in-vehicle cameras play an increasingly important role, especially in driver assistance systems and safety monitoring. With technological advancements, the design and manufacturing of in-vehicle cameras are constantly improving to meet higher performance requirements and more complex application scenarios. Against this backdrop, electromagnetic compatibility (EMC) of in-vehicle cameras has become a critical technical challenge, particularly for cameras with plastic housings.

[0003] Traditional shielding methods for automotive cameras primarily rely on physical shielding covers to reduce electromagnetic interference (EMI). These covers are typically fixed to the copper-plated area of ​​the camera's printed circuit board assembly (PCBA) with screws to achieve grounding. This method provides relatively effective electromagnetic shielding protection on the side covered by the shielding cover and around the PCBA, effectively blocking or reducing electromagnetic wave leakage and the intrusion of external interference.

[0004] However, this traditional shielding method has certain limitations. In particular, the electromagnetic shielding effect of the camera is not ideal on the side not covered by the shielding cover, which is usually the side where the connector is located. Since the connector is one of the main entry points for electromagnetic interference, this design defect may lead to the electromagnetic compatibility performance of the vehicle camera failing to meet standards, affecting its stability and reliability in complex electromagnetic environments. Utility Model Content

[0005] The purpose of this disclosure is to provide a shielding structure for an automotive camera, designed to provide comprehensive shielding protection for printed circuit board assemblies.

[0006] This disclosure provides a shielding structure for an in-vehicle camera, comprising: a printed circuit board assembly for integrating electronic components of the in-vehicle camera; a housing assembly for fixing the in-vehicle camera lens and providing structural support; the housing assembly and the printed circuit board assembly are fixedly connected; a shielding cover assembly is disposed between the housing assembly and the printed circuit board assembly, the shielding cover assembly forming a shielding chamber around the printed circuit board assembly and electrically contacting a copper-plated area on the printed circuit board assembly; used to isolate the printed circuit board assembly from electromagnetic interference from the outside world; and a wire harness connector that passes sequentially through the housing assembly and the shielding cover assembly and is electrically connected to the printed circuit board assembly for transmitting signals from the in-vehicle camera to the vehicle's control system.

[0007] In this implementation, a shielding chamber is formed by surrounding the printed circuit board assembly with a shielding cover assembly, which achieves all-round electromagnetic shielding of the PCBA, effectively isolates electromagnetic interference, and ensures the stability and reliability of the vehicle camera signal.

[0008] In an embodiment of the first aspect, the housing assembly includes a front housing and a rear housing, wherein the front housing is used to fix the vehicle-mounted camera lens and provide structural support; the front housing is fixedly connected to the printed circuit board assembly; the rear housing cooperates with the front housing to jointly form a sealed housing of the vehicle-mounted camera; the rear housing is provided with a through hole for the wire harness connector to pass through.

[0009] In this implementation, the housing assembly is subdivided into a front housing and a rear housing. The front housing fixes the camera lens, and the rear housing cooperates with the front housing to form a sealed outer shell, protecting the internal components from environmental influences and improving the structural stability and environmental adaptability of the vehicle camera.

[0010] In an embodiment of the first aspect, the shielding assembly includes a front shielding cover and a rear shielding cover, wherein the front shielding cover is disposed between the front housing and the printed circuit board assembly, and is electrically in contact with the copper-plated area on the printed circuit board assembly to achieve grounding; the rear shielding cover is disposed between the rear housing and the printed circuit board assembly, and overlaps with the front shielding cover to form a shielding cavity to isolate the printed circuit board assembly from electromagnetic interference from the outside; the rear shielding cover is provided with a first through hole for the wire harness connector to pass through.

[0011] In this implementation, comprehensive electromagnetic shielding of the vehicle-mounted camera's printed circuit board assembly is achieved through the cooperation of front and rear shielding covers. The electrical contact between the front shielding cover and the PCBA ensures effective grounding, while the rear shielding cover overlaps with the front shielding cover to form a shielding cavity, isolating electromagnetic interference and ensuring the camera's electromagnetic compatibility.

[0012] In an embodiment of the first aspect, the front shield and the rear shield overlap to form a shielding chamber, comprising: the edge of the rear shield is provided with a plurality of first spring clip structures, each first spring clip structure including a first base and a first free end, wherein the first base is fixed to the edge of the rear shield and the first free end extends outward to form a contact portion; the edge of the front shield is provided with a plurality of corresponding second spring clip structures, each second spring clip structure including a second base and a second free end, wherein the second base is fixed to the edge of the front shield and the second free end extends outward to form a contact portion; when the front shield and the rear shield overlap, the first free end of the rear shield is inserted into the groove or protrusion formed by the second spring clip structure of the front shield, or the second free end of the front shield is inserted into the groove or protrusion formed by the first spring clip structure of the rear shield, such that the spring clip structures of the front shield and the rear shield engage with each other to form a stable mechanical lock.

[0013] In this implementation, the first and second spring structures are overlapped to achieve a stable mechanical lock between the front and rear shielding covers, thereby enhancing the stability and shielding effect of the shielding cover structure.

[0014] In an embodiment of the first aspect, the rear housing and the rear shield are connected by a fixing structure, wherein the rear housing is provided with at least one protruding first snap-fit ​​structure; the rear shield is provided with at least one corresponding third spring sheet structure, the third spring sheet structure cooperating with the protruding first snap-fit ​​structure on the rear housing, and is fixed by elastic deformation into the snap-fit ​​and springing back; the rear housing is also provided with at least one bracket locking screw post; the rear shield is provided with at least one corresponding fourth spring sheet structure, the fourth spring sheet structure cooperating with the bracket locking screw post, and is fixed by screw fastening; the rear housing is further provided with at least one rear housing connector screw post; the rear shield is provided with at least one corresponding fifth spring sheet structure, the fifth spring sheet structure cooperating with the rear housing connector screw post, and is fixed by screw fastening.

[0015] In this implementation, the various fixing structures between the rear housing and the rear shield (snap-fit ​​structure, bracket locking screw post, rear housing connector screw post) provide a flexible and stable connection method, ensuring the stability and reliability of the shield in various environments.

[0016] In the first aspect of the embodiment, the rear shield is further provided with at least one first grounding spring structure, one end of the first grounding spring structure is fixed to the inner sidewall of the rear shield, and the other end extends out and forms a contact portion, the contact portion abutting against the metal shell of the wire harness connector to achieve electrical grounding.

[0017] In this implementation, the design of the first grounding spring structure achieves electrical grounding between the rear shield and the wire harness connector, providing a good electromagnetic interference discharge path and enhancing the overall shielding effect.

[0018] In an embodiment of the first aspect, the front shield makes electrical contact with the copper-filled area on the printed circuit board assembly to achieve grounding, including: the front shield is provided with at least one second grounding spring structure, one end of the second grounding spring structure is fixed to the inner sidewall of the front shield, and the other end extends out and forms a contact portion, the contact portion directly contacts the copper-filled area on the printed circuit board assembly to achieve electrical grounding.

[0019] In this implementation, the design of the second grounding spring structure realizes the electrical grounding between the front shield and the copper-paved area of ​​the PCBA, providing a direct grounding path between the shield and the PCBA, and further enhancing the electromagnetic shielding effect.

[0020] In an embodiment of the first aspect, at least one locking screw is further included, which passes sequentially through the printed circuit board assembly, the front shield, and the front housing to achieve mechanical fixation between the printed circuit board assembly, the front shield, and the front housing.

[0021] In this implementation, the mechanical fixing between the printed circuit board assembly, the front shield, and the front housing is achieved by setting the fastening screws, providing a simple and stable assembly method and ensuring the stability of the components during vehicle operation.

[0022] In the first aspect of the embodiment, it further includes: a fixed connection between the front housing and the front shield, wherein the front housing is provided with at least one protruding second snap-fit ​​structure; the front shield is provided with at least one sixth spring-loaded structure, the sixth spring-loaded structure including a base and a free end, wherein the base is fixed to the edge of the front shield, and the free end extends outward to form a contact portion; the free end of the sixth spring-loaded structure is inserted into the groove or notch of the second snap-fit ​​structure through elastic deformation, and automatically springs back to the locked position due to elasticity after release, thereby realizing the mechanical fixation between the front shield and the front housing.

[0023] In this implementation, the cooperation between the second snap-fit ​​structure on the front housing and the sixth spring-loaded structure on the front shield provides a simple and reliable mechanical fixing method between the front shield and the front housing, simplifying the assembly process and improving the stability of the structure.

[0024] In an embodiment of the first aspect, the front housing is fixedly connected to the printed circuit board assembly, comprising: the front housing having a plurality of ribs for supporting the printed circuit board assembly; the front shield having a plurality of openings corresponding to the ribs of the front housing; the openings for mounting the printed circuit board assembly into the front housing, and the front shield covering the printed circuit board assembly.

[0025] In this implementation, the ribs on the front housing and the openings on the front shielding cover enable the printed circuit board assembly to be smoothly installed into the front housing, while ensuring that the front shielding cover can cover the PCBA, thus achieving effective assembly of the components and electromagnetic shielding.

[0026] In an embodiment of the first aspect, the front shield has a lens opening in the middle for assembling the vehicle-mounted camera.

[0027] In this implementation, the lens opening design on the front shield provides mounting space for the vehicle camera lens, ensuring the integrity and functionality of the camera assembly.

[0028] In an embodiment of the first aspect, the area around the lens opening of the front shield is provided with at least one convex structure, the convex structure being used to enhance the planar rigidity of the front shield around the lens opening.

[0029] In this implementation, the convex hull structure around the lens opening of the front shielding enhances the planar rigidity of the area, preventing planar deformation caused by lens installation and improving the structural stability and durability of the shielding. Attached Figure Description

[0030] Figure 1 The diagram shown is an exploded view of the vehicle-mounted camera shielding structure described in the embodiments of this application.

[0031] Figure 2 The image shown is a cross-sectional view of the vehicle-mounted camera shielding structure described in an embodiment of this application.

[0032] Figure 3 The diagram shown is a structural schematic of the front shield as described in an embodiment of this application.

[0033] Figure 4 The diagram shown is a structural schematic of the front housing and the front shield as described in the embodiment of this application.

[0034] Figure 5 The diagram shown is a structural schematic of the rear shield as described in an embodiment of this application.

[0035] Figure 6 The image shown is a top view of the overlap between the front and rear shielding covers as described in the embodiments of this application.

[0036] Figure 7 Displayed as Figure 6 A sectional view along the AA direction.

[0037] Figure 8 The diagram shown is a structural schematic of the rear housing as described in an embodiment of this application.

[0038] Component designation explanation

[0039]

[0040] Detailed Implementation

[0041] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0042] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0043] In the design of automotive cameras, traditional electromagnetic interference (EMI) suppression strategies mainly rely on physical shielding covers. These covers are fixed to the copper foil area of ​​the camera's printed circuit board assembly (PCBA) with screws to achieve grounding, thereby providing a certain degree of electromagnetic shielding. Although this shielding method provides effective protection in the area covered by the shielding cover and around the PCBA, reducing electromagnetic radiation and the penetration of external interference, it has significant shortcomings in terms of comprehensive protection.

[0044] Specifically, traditional methods fail to provide adequate electromagnetic shielding for areas not covered by the shielding cover, especially the side where the connector is located. Given that connectors are often the primary entry point for electromagnetic interference, this design oversight can reduce the electromagnetic compatibility performance of the vehicle camera, thus affecting its stability and reliability in varying electromagnetic environments. Without comprehensive shielding of the PCBA, electromagnetic interference may penetrate through unshielded areas, interfering with the normal operation of the vehicle camera, causing signal distortion, system malfunction, and even potential safety incidents.

[0045] To address the aforementioned problems, this invention proposes a shielding structure for vehicle-mounted cameras, aiming to provide comprehensive shielding protection for PCBAs. The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0046] like Figure 1 and Figure 2 As shown, a vehicle-mounted camera shielding structure according to this application includes: a printed circuit board assembly 1, a housing assembly 2, a shielding cover assembly 3, and a wiring harness connector 4, wherein...

[0047] The printed circuit board assembly 1 is used to integrate the electronic components of the vehicle-mounted camera 14.

[0048] Specifically, the printed circuit board assembly 1, commonly referred to as a PCBA, consists of a printed circuit board and various electronic components mounted thereon. These components include, but are not limited to, microprocessors, memory, sensors, and interface chips required for communication with the vehicle control system. The design and layout of the PCBA are designed to optimize the performance of the electronic components, ensure efficient and reliable signal transmission, and reduce the generation of electromagnetic interference.

[0049] To achieve these goals, the PCBA employs a multi-layered structure in its physical design, comprising multiple layers of copper foil and insulating materials. The copper foil layers not only provide electrical connections for electronic components but also, as part of the shielding structure, help guide and reduce electromagnetic interference. Furthermore, the copper-plated areas on the PCBA undergo special treatment to ensure electrical contact and grounding with the shielding assembly, a key technical means to ensure electromagnetic compatibility.

[0050] The housing assembly 2 is used to fix the vehicle-mounted camera lens 14 and provide structural support; the housing assembly 2 is fixedly connected to the printed circuit board assembly 1.

[0051] In some embodiments, the housing assembly includes a front housing 21 and a rear housing 22.

[0052] The front housing 21 is used to fix the lens of the vehicle camera 14 and provide structural support; the front housing 21 is fixedly connected to the printed circuit board assembly 1.

[0053] Specifically, the front housing 21 is an external component of the shielding structure of the vehicle-mounted camera 14. Its main function is to fix the lens assembly of the vehicle-mounted camera 14 and ensure that the lens maintains accurate positioning and stable performance under various environmental conditions. The front housing 21 is typically made of high-strength materials, such as engineering plastics or lightweight metal alloys, which provide sufficient mechanical strength while meeting the requirements of lightweight design. The design of the front housing 21 takes into account the fitting precision with the lens, ensuring that the lens can be securely installed inside, while allowing the lens to be adjusted as necessary to achieve the optimal visual angle and focal length.

[0054] The rear housing 22 cooperates with the front housing 21 to form a sealed housing of the vehicle camera 14; the rear housing 22 is provided with a through hole for the wire harness connector 4 to pass through.

[0055] The shielding assembly 3 is disposed between the housing assembly 2 and the printed circuit board assembly 1. The shielding assembly 3 surrounds the printed circuit board assembly 1 to form a shielding chamber and is in electrical contact with the copper-plated area on the printed circuit board assembly 1; it is used to isolate the printed circuit board assembly 1 from electromagnetic interference from the outside world.

[0056] In some embodiments, the shielding assembly 3 includes a front shielding 31 and a rear shielding 32.

[0057] The front shield 31, such as Figures 2-4 As shown, it is located between the front housing 21 and the printed circuit board assembly 1, and is in electrical contact with the copper-plated area on the printed circuit board assembly 1 to achieve grounding.

[0058] Specifically, the front shield 31 is a metal cover installed between the front housing 21 and the printed circuit board assembly 1 (PCBA). Its main function is to form an electromagnetic barrier to prevent external electromagnetic interference from affecting the internal circuitry of the vehicle camera 14, and also to reduce the impact of electromagnetic interference generated inside the camera on other electronic systems of the vehicle. The front shield 31 is typically made of conductive materials, such as copper, aluminum, or metal-plated plastic, which have good electromagnetic shielding performance.

[0059] In some embodiments, the front shield 31 is provided with at least one second grounding spring structure 78, one end of the second grounding spring structure 78 is fixed to the inner sidewall of the front shield 31, and the other end extends out and forms a contact portion, which directly contacts the copper-plated area on the printed circuit board assembly 1 to achieve electrical grounding.

[0060] Specifically, the second grounding spring structure 78 is a specially designed grounding mechanism to enhance the electrical connection between the front shield 31 and the printed circuit board assembly 1 (PCBA). Made of conductive material, it is designed to provide a direct and reliable electrical path from the shield to the copper-paved area of ​​the PCBA for electrical grounding.

[0061] The second grounding spring structure 78 comprises a fixed end and a free end. The fixed end is mounted or welded to the inner wall of the front shield 31, ensuring that the spring structure and the shield form a robust whole. The free end extends out and forms a contact portion designed to directly contact the copper-plated area on the PCBA. Through this design, the second grounding spring structure 78 can establish a stable electrical connection point between the front shield 31 and the PCBA, effectively connecting the shield to ground and thus reducing electromagnetic interference.

[0062] The following describes the fixing structure between the front shield 31, the printed circuit board assembly 1, and the front housing 21.

[0063] In some embodiments, at least one locking screw 9 is also included, which passes sequentially through the printed circuit board assembly 1, the front shield 31 and the front housing 21, for mechanical fixing between the printed circuit board assembly 1, the front shield 31 and the front housing 21.

[0064] Specifically, during installation, the fastening screw 9 passes through specific holes in the PCBA, and then sequentially through corresponding holes in the front shield 31 and the front housing 21. Precise alignment and dimensional control of these holes are crucial to ensuring the correct installation of the fastening screw 9. The end of the fastening screw 9 may be threaded or self-tapping to achieve a secure hold when passing through the plastic or metal front housing 21. Furthermore, to improve connection reliability, washers or other anti-loosening devices may be used to prevent screw loosening due to long-term vibration.

[0065] In some embodiments, the front housing 21 and the front shield 31 are fixedly connected, including: the front housing 21 is provided with at least one protruding second snap-fit ​​structure 84; the front shield 31 is provided with at least one corresponding sixth spring-loaded structure 76, the sixth spring-loaded structure 76 includes a base and a free end, wherein the base is fixed to the edge of the front shield 31, and the free end extends outward to form a contact portion; the free end of the sixth spring-loaded structure 76 is inserted into the groove or notch of the second snap-fit ​​structure 84 by elastic deformation, and automatically springs back to the locked position due to elasticity after release, thereby realizing the mechanical fixation between the front shield 31 and the front housing 21.

[0066] Specifically, the second snap-fit ​​structure 84, as part of the front housing 21, is designed as a protruding shape extending from the housing surface, with a groove or notch at its end to receive the spring clip structure on the front shield 31. This snap-fit ​​structure is designed with mechanical strength and ease of assembly in mind, providing stable support and fixation for the front shield 31 without relying on additional fasteners.

[0067] The sixth spring-loaded structure 76 is a key component of the front shield 31, made of elastic material, and includes a base and a free end. The base is fixed to the edge of the front shield 31, while the free end extends outward to form a contact portion. This spring-loaded structure design utilizes the elastic properties of the material, allowing the free end to insert into the groove or notch of the second snap-fit ​​structure 84, and automatically spring back to the locked position due to elasticity after release. This self-locking mechanism not only ensures a tight fit between the front shield 31 and the front housing 21, but also provides a quick and reliable assembly method.

[0068] During actual assembly, the free end of the sixth spring structure 76 is temporarily deformed to fit the groove or notch of the second snap-fit ​​structure 84. Subsequently, the spring returns to its original shape and, due to its elastic properties, automatically locks itself in the snap-fit ​​structure. This locking mechanism not only improves assembly efficiency but also enhances the stability and reliability of the structure, ensuring that the front shield 31 will not shift due to vibration or impact during vehicle operation.

[0069] In some embodiments, the front housing 21 is fixedly connected to the printed circuit board assembly 1, including: the front housing 21 is provided with a plurality of ribs 10, the ribs 10 being used to support the printed circuit board assembly 1; the front shield 31 is provided with a plurality of openings 11 corresponding to the ribs 10 on the front housing 21; the openings 11 are used to allow the printed circuit board assembly 1 to be installed into the front housing 21, and the front shield 31 covers the printed circuit board assembly 1.

[0070] Specifically, such as Figure 4 As shown, the front housing 21 is designed with multiple ribs 10, which provide stable support for the printed circuit board assembly 1. As part of the front housing 21, the ribs 10 are evenly distributed inside the housing, forming a structural frame to ensure that the PCBA does not shift or bend under external forces. The design of the ribs 10 takes into full account the size and weight of the PCBA to provide sufficient support while maintaining the lightweight of the front housing 21.

[0071] To ensure smooth installation of the PCBA into the front housing 21 and effective coverage of the front shield 31, the front shield 31 is provided with multiple openings 11. The positions and dimensions of these openings 11 are carefully designed to avoid the ribs 10 on the front housing 21, allowing various parts of the PCBA to pass through the openings 11 and engage with the ribs 10. The design of the openings 11 not only ensures smooth PCBA installation but also avoids any interference with the ribs 10, thus guaranteeing the structural integrity of the front housing 21.

[0072] During assembly, the front shield 31 is first positioned and placed over the printed circuit board assembly 1. Then, the front housing 21 is assembled onto the periphery of the front shield 31. Since the opening 11 of the front shield 31 corresponds to the rib 10 of the front housing 21, the edge of the printed circuit board assembly 1 can pass through the opening 11 and stably overlap the rib 10 of the front housing 21. This installation method of the front shield 31 not only simplifies the assembly process but also improves the overall structural stability and shielding effect.

[0073] In some embodiments, the front shield 31 has a lens opening 12 in the middle, which is used to assemble the vehicle camera 14.

[0074] Specifically, the lens opening 12 is a special design of the front shield 31 to accommodate the lens assembly of the vehicle camera 14. The size and shape of the lens opening 12 are precisely designed to match the outer diameter of the lens, ensuring that the lens can smoothly pass through the opening 11 and be fixed in place, while maintaining optical performance unaffected by the shield.

[0075] Furthermore, the area around the lens opening 12 of the front shield 31 is provided with at least one convex structure 13, which is used to enhance the planar rigidity of the front shield 31 around the lens opening 12.

[0076] Specifically, the convex hull structures 13 are designed with mechanical reinforcement in mind. They enhance the structural strength of the front shield 31 around the lens opening 12 by increasing the local thickness or volume of the material. This design helps resist stress caused by installation, temperature changes, or mechanical vibration, reducing the risk of deformation or damage to the front shield 31 in critical areas. The shape and dimensions of the convex hull structures 13 are precisely calculated to ensure maximum mechanical benefit without compromising the overall electromagnetic shielding effectiveness of the shield.

[0077] During manufacturing, the convex bulge structure 13 can be integrally formed with the front shield 31 by stamping, injection molding, or other metal forming techniques, or it can be installed as a separate component onto the front shield 31 by welding, bonding, or other mechanical fixing methods. The position and layout of these structures are optimized to ensure that they can effectively disperse the forces applied around the lens opening 12, thereby protecting the lens assembly from damage.

[0078] The rear shield 32 is disposed between the rear housing 22 and the printed circuit board assembly 1, and overlaps with the front shield 31 to form a shielding chamber to isolate the printed circuit board assembly 1 from electromagnetic interference from the outside world; the rear shield 32 is provided with a first through hole 79 for the wire harness connector 4 to pass through.

[0079] Specifically, such as Figure 5 and Figure 2 As shown, the rear shield 32 is positioned between the rear housing 22 and the printed circuit board assembly 1 (PCBA), and overlaps with the front shield 31. This layout ensures that the front shield 31 and the rear shield 32 together form a complete shielding space, effectively isolating the PCBA from external electromagnetic interference. The design of the rear shield 32 also considers the passage requirements of the wire harness connector 4, and therefore provides a first through hole thereon. The position and size of these through holes are carefully designed according to the specifications of the wire harness connector 4 to ensure that the wire harness connector 4 can pass through smoothly while maintaining the overall structural integrity of the shield. The design of the through holes also considers sealing to prevent environmental factors such as moisture and dust from entering the shielding space through the through holes, affecting the performance and reliability of the camera.

[0080] During actual assembly, the wiring harness connector 4 passes through the first through hole 79 on the rear shield 32, connecting the PCBA to the vehicle's control system. This design simplifies the assembly process while ensuring the wiring harness connector 4 is fixed and protected inside the shield. This design of the rear shield 32 not only improves the assembly efficiency of the vehicle camera 14 but also enhances its stability and reliability in complex electromagnetic environments.

[0081] In some implementations, such as Figure 6 and Figure 7 As shown, the mating overlap between the front shield 31 and the rear shield 32 includes:

[0082] The rear shield 32 has multiple first spring clip structures 71 on its edge. Each first spring clip structure 71 includes a first base and a first free end, wherein the first base is fixed to the edge of the rear shield 32 and the first free end extends outward to form a contact portion. The front shield 31 has multiple corresponding second spring clip structures 72 on its edge. Each second spring clip structure 72 includes a second base and a second free end, wherein the second base is fixed to the edge of the front shield 31 and the second free end extends outward to form a contact portion. When the front shield 31 overlaps with the rear shield 32, the first free end of the rear shield 32 is inserted into the groove formed by the second spring clip structure 72 of the front shield 31, or the second free end of the front shield 31 is inserted into the groove formed by the first spring clip structure 71 of the rear shield 32, so that the spring clip structures of the front shield 31 and the rear shield 32 are interlocked to form a stable mechanical lock.

[0083] In some embodiments, the rear housing 22 and the rear shield 32 are connected by a fixing structure, including:

[0084] The rear housing 22 is provided with at least one protruding first snap-fit ​​structure 81; the rear shield 32 is provided with at least one corresponding third spring sheet structure 73, the third spring sheet structure 73 cooperates with the protruding first snap-fit ​​structure 81 on the rear housing 22, and is fixed by elastic deformation to insert into the snap-fit ​​and spring back; the rear housing 22 is also provided with at least one bracket locking screw post 82; the rear shield 32 is provided with at least one corresponding fourth spring sheet structure 74, the fourth spring sheet structure 74 cooperates with the bracket locking screw post 82, and is fixed by screw fastening; the rear housing 22 is further provided with at least one rear housing connector screw post 83; the rear shield 32 is provided with at least one corresponding fifth spring sheet structure 75, the fifth spring sheet structure 75 cooperates with the rear housing connector screw post 83, and is fixed by screw fastening.

[0085] Specifically, such as Figure 8 As shown, the fixed connection between the rear housing 22 and the rear shielding cover 32 adopts a composite fixing method combining a snap-fit ​​structure and screw fastening. This design aims to provide a quick and stable connection solution, ensuring the stable installation of the rear shielding cover 32 on the rear housing 22 while maintaining the electromagnetic shielding performance of the shielding cover.

[0086] The rear housing 22 is designed with at least one protruding first snap-fit ​​structure 81. These snap-fit ​​structures, as part of the fixing mechanism, are used to engage with a third spring-loaded structure 73 on the rear shield 32. The third spring-loaded structure 73 is made of an elastic material and has sufficient elasticity to engage with the first snap-fit ​​structure 81. Through elastic deformation, the third spring-loaded structure 73 can insert into the first snap-fit ​​structure 81 and spring back to the locked position, achieving quick and stable mechanical fixing.

[0087] In addition to the snap-fit ​​structure, the rear housing 22 is also provided with at least one bracket locking screw post 82, which is used to engage with the fourth spring-loaded structure 74 on the rear shield 32. The fourth spring-loaded structure 74 is designed to receive screw fastening, and the engagement of the screw with the bracket locking screw post 82 achieves a secure connection between the rear shield 32 and the rear housing 22. This fastening method provides additional stability, ensuring that the shield will not loosen due to vibration during vehicle operation.

[0088] Furthermore, the rear housing 22 is also provided with at least one rear housing connector screw post 83, which mates with the fifth spring contact structure 75 on the rear shield 32. The fifth spring contact structure 75 is also designed to receive screw fastening, and through its engagement with the rear housing connector screw post 83, another layer of fixation is achieved between the rear shield 32 and the rear housing 22. This design not only enhances structural stability but also provides convenience for adjustment and maintenance.

[0089] In some embodiments, the rear shield 32 is further provided with at least one first grounding spring structure 77, one end of the first grounding spring structure 77 is fixed to the inner sidewall of the rear shield 32, and the other end extends out and forms a contact portion, the contact portion abutting against the metal shell of the wire harness connector 4 to achieve electrical grounding.

[0090] Specifically, during actual assembly, after the wire harness connector 4 passes through the first through hole 79 of the rear housing 22 and the rear shield 32, its metal outer shell will come into contact with the contact portion of the first grounding spring structure 77. This contact not only achieves electrical grounding but also helps improve the shielding effectiveness of the shield because it provides an additional electromagnetic interference shielding path. Furthermore, the material selection for the first grounding spring structure 77 also takes conductivity into account, typically using copper, aluminum, or other highly conductive materials to ensure effective grounding.

[0091] The wiring harness connector 4 passes sequentially through the housing assembly 2 and the shielding cover assembly 3, and is electrically connected to the printed circuit board assembly 1, for transmitting the signal from the vehicle camera to the vehicle's control system.

[0092] In some embodiments, the wiring harness connector 4 passes sequentially through the rear housing 22 and the rear shield 32 and is electrically connected to the printed circuit board assembly 1 to transmit the signal of the vehicle camera 14 to the vehicle's control system.

[0093] Specifically, the wiring harness connector 4 is responsible for transmitting the signals captured by the camera to the vehicle's control system. This connector passes sequentially through the rear housing 22 and the rear shield 32, ultimately connecting electrically to the printed circuit board assembly 1 (PCBA). This design ensures a direct and efficient signal path from the camera to the vehicle control system.

[0094] As the wire harness connector 4 passes through the rear housing 22, it passes through specially designed through-holes whose dimensions and positions are precisely calculated to fit the connector's specifications. This design allows the wire harness connector 4 to pass smoothly while minimizing the impact on the structural integrity of the rear housing 22. The through-holes are also designed to accommodate sealing requirements, ensuring that the connector's sealing performance is not compromised as it passes through the rear housing 22.

[0095] Subsequently, the wire harness connector 4 passes through the rear shield 32, a step also utilizing the through-holes on the rear shield 32. These through-holes not only allow the wire harness connector 4 to pass through but are also designed with sufficient space to accommodate the connector's movement while ensuring that the electromagnetic shielding effect of the shield is not affected. A reinforcing structure may be provided around the through-holes on the rear shield 32 to enhance the mechanical strength of this area and prevent a reduction in shielding effectiveness due to the connector passing through.

[0096] Finally, the wire harness connector 4 is electrically connected to the PCBA, completing the signal transmission path. The connection between the connector and the PCBA may be achieved through methods such as soldering, mating, or crimping to ensure the reliability and long-term stability of the electrical connection. This connection method not only guarantees high-quality signal transmission but also helps reduce the risk of poor contact or loose connection.

[0097] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A shielding structure for a vehicle-mounted camera, characterized in that, include: Printed circuit board assemblies for integrating electronic components for automotive cameras; Housing assembly for securing the vehicle-mounted camera lens and providing structural support; The housing assembly is fixedly connected to the printed circuit board assembly; A shielding assembly is disposed between the housing assembly and the printed circuit board assembly. The shielding assembly surrounds the printed circuit board assembly to form a shielding chamber and is in electrical contact with the copper-plated area on the printed circuit board assembly; it is used to isolate the printed circuit board assembly from electromagnetic interference from the outside world. The wiring harness connector passes sequentially through the housing assembly and the shielding assembly, and is electrically connected to the printed circuit board assembly, for transmitting the signal from the vehicle camera to the vehicle's control system.

2. The vehicle-mounted camera shielding structure according to claim 1, characterized in that, The housing assembly includes a front housing and a rear housing, wherein, The front housing is used to fix the vehicle-mounted camera lens and provide structural support; the front housing is fixedly connected to the printed circuit board assembly. The rear housing, together with the front housing, forms a sealed housing for the vehicle camera; the rear housing has a through hole for the wiring harness connector to pass through.

3. The vehicle-mounted camera shielding structure according to claim 2, characterized in that, The shielding assembly includes a front shielding cover and a rear shielding cover, wherein... The front shield is disposed between the front housing and the printed circuit board assembly, and is in electrical contact with the copper-plated area on the printed circuit board assembly to achieve grounding; The rear shield is disposed between the rear housing and the printed circuit board assembly, and overlaps with the front shield to form a shielding chamber to isolate the printed circuit board assembly from external electromagnetic interference; the rear shield is provided with a first through hole for the wire harness connector to pass through.

4. The vehicle-mounted camera shielding structure according to claim 3, characterized in that, The front shield and the rear shield overlap to form a shielding chamber, including: The edge of the rear shield is provided with a plurality of first spring sheet structures, each first spring sheet structure including a first base and a first free end, wherein the first base is fixed to the edge of the rear shield and the first free end extends outward to form a contact portion; The edge of the front shield is provided with a plurality of corresponding second spring sheet structures. Each second spring sheet structure includes a second base and a second free end, wherein the second base is fixed to the edge of the front shield and the second free end extends outward to form a contact portion. When the front shield and the rear shield overlap, the first free end of the rear shield is inserted into the groove or protrusion formed by the second spring sheet structure of the front shield, or the second free end of the front shield is inserted into the groove or protrusion formed by the first spring sheet structure of the rear shield, so that the spring sheet structures of the front shield and the rear shield are engaged with each other to form a stable mechanical lock.

5. The vehicle-mounted camera shielding structure according to claim 3, characterized in that, Also includes: The rear housing and the rear shield are connected by a fixing structure, wherein... The rear housing is provided with at least one protruding first snap-fit ​​structure; At least one third spring sheet structure is provided on the rear shielding cover. The third spring sheet structure cooperates with the first buckle structure protruding on the rear housing. It is fixed by elastically deforming into the buckle and springing back. The rear housing is also provided with at least one bracket locking screw post; the rear shield is provided with at least one fourth spring sheet structure, which cooperates with the bracket locking screw post and is fixed by screw fastening. The rear housing is further provided with at least one rear housing connector screw post; the rear shield is provided with at least one fifth spring structure, which cooperates with the rear housing connector screw post and is fixed by screw fastening.

6. The vehicle-mounted camera shielding structure according to claim 5, characterized in that, The rear shield is also provided with at least one first grounding spring structure. One end of the first grounding spring structure is fixed to the inner side wall of the rear shield, and the other end extends out to form a contact portion. The contact portion abuts against the metal shell of the wire harness connector to achieve electrical grounding.

7. The vehicle-mounted camera shielding structure according to claim 3, characterized in that, The front shield makes electrical contact with the copper-plated area on the printed circuit board assembly to achieve grounding, including: The front shield is provided with at least one second grounding spring structure. One end of the second grounding spring structure is fixed to the inner sidewall of the front shield, and the other end extends out to form a contact portion. The contact portion directly contacts the copper-plated area on the printed circuit board assembly to achieve electrical grounding.

8. The vehicle-mounted camera shielding structure according to claim 3, characterized in that, It also includes at least one fastening screw, which passes sequentially through the printed circuit board assembly, the front shield, and the front housing to achieve mechanical fixation between the printed circuit board assembly, the front shield, and the front housing.

9. The vehicle-mounted camera shielding structure according to claim 3, characterized in that, Also includes: The front housing and the front shield are fixedly connected, wherein, The front housing is provided with at least one protruding second snap-fit ​​structure; At least one sixth spring structure is provided on the front shield. The sixth spring structure includes a base and a free end, wherein the base is fixed to the edge of the front shield and the free end extends outward to form a contact portion. The free end of the sixth spring structure is inserted into the groove or notch of the second snap-fit ​​structure through elastic deformation, and automatically springs back to the locked position due to elasticity after release, thereby achieving mechanical fixation between the front shield and the front housing.

10. The vehicle-mounted camera shielding structure according to claim 3, characterized in that, The front housing is fixedly connected to the printed circuit board assembly, including: The front housing is provided with multiple ribs, which are used to support the printed circuit board assembly; The front shield is provided with a plurality of openings that avoid the front housing ribs; the openings are used to install the printed circuit board assembly into the front housing, and the front shield covers the printed circuit board assembly.

11. The vehicle-mounted camera shielding structure according to claim 3, characterized in that, Also includes: The front shield has a lens opening in the middle, which is used to assemble the vehicle camera.

12. The vehicle-mounted camera shielding structure according to claim 11, characterized in that, The front shield has at least one convex structure around the lens opening, which is used to enhance the planar rigidity of the front shield around the lens opening.

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