A vehicle-mounted camera with an electrostatic elimination structure

Abstract

This utility model discloses a vehicle-mounted camera with an electrostatic elimination structure, including a lens assembly, a front shell, a sensor plate, and a rear shell. The front shell is connected to the lens assembly and the rear shell on both sides, respectively. A first groove is formed at the position where it mates with the lens assembly. A second groove is also formed on the front shell, coaxially arranged with the first groove. An electrostatic grid of a predetermined thickness is formed between the first and second grooves. A connecting hole is formed on the electrostatic grid, connecting the first and second grooves, and the radial width of the connecting hole is smaller than the radial width of the first and second grooves, so that the electrostatic grid has a predetermined width in the radial direction. Multiple annular grooves are formed on the end face of the electrostatic grid near the first groove, and the annular grooves are filled with conductive adhesive. This solution can reduce the impact of static electricity from the lens assembly on the sensor plate without requiring additional parts, thereby reducing usage costs and installation complexity.

Description

Technical Field

[0001] This utility model relates to the field of video surveillance processing equipment technology, specifically to a vehicle-mounted camera with an electrostatic elimination structure. Background Technology

[0002] With the gradual development of assisted driving technology in the automotive industry, the installation rate of vehicle cameras has been increasing year by year. As a result, the requirements for vehicle driving safety have increased, and the requirements for electrostatic protection of the lenses of vehicle cameras that can be touched are becoming increasingly stringent.

[0003] Existing vehicle cameras mainly consist of a lens assembly, a front housing, and a sensor board. To ensure the working strength of the lens assembly, the lens barrel is generally made of metal. When static electricity strikes the lens assembly, the accumulated static electricity will break down the air and strike the sensor board. At this time, the sensor board is interfered with by static electricity, which can cause problems such as screen flickering, pink screen, and black lines in the vehicle camera. The problems with the vehicle camera image will cause the image algorithm to be unable to recognize the image, making the entire system unable to function. Functions such as lane recognition and obstacle recognition will not be able to be realized, thus affecting the normal operation of the vehicle camera.

[0004] In the existing technology, the connection between the lens assembly and the front housing is achieved by opening a through hole in the front housing, then inserting the lens assembly into the through hole and bonding it to the front housing. In order to eliminate the influence of static electricity from the lens assembly on the sensor board, a metal spring or electrostatic foam is added to the side of the lens assembly closest to the sensor board. Adding an extra part will undoubtedly increase the cost of the entire vehicle camera. At the same time, the installation accuracy requirements for the metal spring or electrostatic foam are also high, which greatly increases the complexity of the installation process. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to provide a vehicle camera with an electrostatic elimination structure that can reduce the impact of static electricity of the lens assembly on the sensor board, without the need for additional parts, thereby reducing the cost of use and the complexity of the installation process.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A vehicle-mounted camera with an electrostatic elimination structure includes a lens assembly, a front housing, a sensor plate, and a rear housing. One side of the front housing is fixedly connected to the lens assembly, and the other side of the front housing is fixedly connected to the rear housing. A mounting chamber is formed between the front housing and the rear housing. The sensor plate is disposed in the mounting chamber and fixedly connected to the front housing. A first groove is formed on the front housing at a position where it mates with the lens assembly. The first groove extends from the outside of the front housing to the inside of the front housing. A second groove is also formed on the front housing. The second groove is coaxially arranged with the first groove and extends from the inside of the front housing to the outside of the front housing. An electrostatic grid with a predetermined thickness is formed between the first groove and the second groove. A connecting hole is formed on the electrostatic grid to connect the first groove and the second groove. The radial width of the connecting hole is smaller than the radial width of the first groove and the second groove, so that the electrostatic grid has a predetermined width in the radial direction. A plurality of annular grooves are formed on the end face of the electrostatic grid near the first groove. The annular grooves are filled with conductive adhesive.

[0007] This solution forms an electrostatic grid between the first and second grooves, and mounts the lens assembly within the first groove. This utilizes the electrostatic grid on the front housing to isolate the lens assembly and the sensor board, increasing the creepage distance between them. Therefore, there is no need for additional metal springs or electrostatic foam, eliminating a component and reducing costs, while also simplifying the installation process. Simultaneously, multiple annular grooves are formed on the end face of the electrostatic grid near the first groove, and these grooves are filled with conductive adhesive. When static electricity accumulates on the lens assembly and is transferred to its bottom, the conductive adhesive in the annular grooves effectively transfers the static electricity from the bottom of the lens assembly to the front housing, further reducing the potential impact of static electricity from the lens assembly on the sensor board.

[0008] In summary, this solution can significantly reduce the impact of static electricity from the lens assembly on the sensor board, without requiring additional parts, thus avoiding increased usage costs and complicated installation processes.

[0009] Preferably, two adjacent annular grooves are connected by a connecting hole, and the connecting hole is also filled with conductive adhesive.

[0010] In this way, two adjacent annular grooves are connected through a connecting hole, and conductive adhesive is also filled in the connecting hole. When the static electricity distribution on the lens assembly is uneven, resulting in varying amounts of static electricity absorbed by the conductive adhesive, the connection through the connecting hole allows the static electricity on the conductive adhesive at different locations to be transferred to each other, thereby ensuring the effective absorption of static electricity on the lens assembly.

[0011] Preferably, a first protrusion is provided on the outer side of the front housing at the position where it connects with the lens assembly. The first groove extends outward and passes through the first protrusion. One end of the lens assembly extends into the first groove and connects with the front housing, while the other end of the lens assembly protrudes from the first protrusion.

[0012] In this way, by setting the first protrusion and allowing the first groove to pass through the first protrusion, the first protrusion is used to meet the requirements of lens assembly installation. The front shell only needs to have a larger thickness at the position where the lens assembly is installed, while the rest can maintain a smaller thickness, thereby enabling the overall front shell to be designed to be lightweight.

[0013] Preferably, a second boss is provided inwardly at the location where the second groove is formed on the inner side of the front shell, and the second groove extends inwardly and penetrates the second boss.

[0014] In this way, by setting a second boss, the increased local thickness formed by the second boss can meet the installation requirements and increase the creepage distance.

[0015] Preferably, the portion of the sensor plate corresponding to the second groove extends into the second groove.

[0016] By extending the sensor plate into the second groove, the overall thickness of the vehicle camera can be reduced, enabling a miniaturized design.

[0017] Preferably, the lens assembly includes a lens and a lens barrel, the lens is installed inside the lens barrel and the lens barrel is fixedly connected to the front shell, and a plurality of conductive plates are provided around the first protrusion, one end of the conductive plate is connected to the front shell and the other end of the conductive plate is connected to the lens barrel.

[0018] In this way, by setting multiple conductive plates around the first protrusion and connecting the two ends of the conductive plates to the front housing and the lens barrel respectively, the static electricity on the lens barrel can be transferred to the front housing using the conductive plates, thereby further reducing the impact of static electricity on the lens assembly on the sensor board.

[0019] Preferably, three conductive sheets are provided around the first protrusion, and the three conductive sheets are evenly distributed in the circumferential direction.

[0020] In this way, the three conductive sheets are evenly distributed circumferentially, so that static electricity at different locations of the lens assembly can be effectively transferred through the corresponding conductive sheets.

[0021] Preferably, the lens assembly is bonded and fixed to the front housing.

[0022] Preferably, the sensor plate is fixedly connected to the front shell by screws.

[0023] Preferably, multiple buckles are provided around the front shell, and a retaining ring is provided on the rear shell at a position corresponding to the buckle. The retaining ring has a retaining hole, and the buckle is engaged in the retaining hole.

[0024] In this way, when connecting the front and rear shells, the buckles on the front shell are engaged with the corresponding holes on the rear shell, thus connecting the front and rear shells by using the buckles and holes.

[0025] Compared with the prior art, this utility model achieves the purpose of eliminating static electricity by adding an electrostatic grid on the front shell, which ensures performance without the need for additional parts, reducing the cost of use and the complexity of installation. Attached Figure Description

[0026] Appendix Figure 1 This is a schematic diagram of the structure of the vehicle-mounted camera with an electrostatic elimination structure according to this utility model; Appendix Figure 2 This is an exploded schematic diagram of the vehicle-mounted camera with an electrostatic elimination structure according to this utility model; Appendix Figure 3 This is a cross-sectional view of the vehicle-mounted camera with an electrostatic elimination structure according to this utility model; Appendix Figure 4 for Figure 3 Enlarged view of point A in the middle; Appendix Figure 5 This is a schematic diagram of the outer structure of the front shell of the vehicle-mounted camera with an electrostatic elimination structure according to this utility model. Appendix Figure 6 This is a schematic diagram of the inner structure of the front shell of the vehicle-mounted camera with an electrostatic elimination structure according to this utility model. Appendix Figure 7 This is a schematic diagram of the rear shell of the vehicle-mounted camera with an electrostatic elimination structure according to this utility model.

[0027] Explanation of reference numerals in the attached drawings: Lens assembly 1, front shell 2, sensor plate 3, rear shell 4, electrostatic grid 5, first protrusion 6, conductive sheet 7, second protrusion 8, buckle 9, retaining ring 10, annular groove 11. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation on the embodiments. Moreover, the method and / or process should not be limited to steps performed in the order written; those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this application. Existing vehicle cameras mainly consist of a lens assembly, a front housing, and a sensor board. To ensure the working strength of the lens assembly, the lens barrel is generally made of metal. When static electricity strikes the lens assembly, the accumulated static electricity will break down the air and strike the sensor board. At this time, the sensor board is interfered with by static electricity, which can cause problems such as screen flickering, pink screen, and black lines in the vehicle camera. The problems with the vehicle camera image will cause the image algorithm to be unable to recognize the image, making the entire system unable to function. Functions such as lane recognition and obstacle recognition will not be able to be realized, thus affecting the normal operation of the vehicle camera.

[0031] In the existing technology, the connection between the lens assembly and the front housing is achieved by opening a through hole in the front housing, then inserting the lens assembly into the through hole and bonding it to the front housing. In order to eliminate the influence of static electricity from the lens assembly on the sensor board, a metal spring or electrostatic foam is added to the side of the lens assembly closest to the sensor board. Adding an extra part will undoubtedly increase the cost of the entire vehicle camera. At the same time, the installation accuracy requirements for the metal spring or electrostatic foam are also high, which greatly increases the complexity of the installation process.

[0032] To address the aforementioned technical problems, this specific embodiment provides a vehicle-mounted camera with an electrostatic elimination structure, as shown in the attached figure. Figure 1 To the attached Figure 7 As shown, the device includes a lens assembly 1, a front housing 2, a sensor plate 3, and a rear housing 4. One side of the front housing 2 is fixedly connected to the lens assembly 1. In this specific embodiment, the front housing 2 and the lens assembly 1 are fixed by adhesive bonding. The other side of the front housing 2 is fixedly connected to the rear housing 4. In this specific embodiment, multiple buckles 9 are provided around the front housing 2, and corresponding buckle rings 10 are protruding on the rear housing 4 at positions corresponding to the buckles 9. The buckle rings 10 have buckle holes, and the buckles 9 are engaged in the buckle holes. Thus, when connecting the front housing 2 and the rear housing 4, the buckles 9 on the front housing 2 are engaged in the corresponding buckle holes on the rear housing 4, thereby connecting the front housing 2 and the rear housing 4 using the connection of the buckles 9 and the buckle holes. A mounting chamber is formed between the front housing 2 and the rear housing 4. The sensor plate 3 is disposed in the mounting chamber and fixedly connected to the front housing 2. In this specific embodiment, the sensor plate 3 and the front housing 2 are fixedly connected by screws.

[0033] Specifically, a first groove is formed on the front housing 2 at the position where it mates with the lens assembly 1. The first groove extends from the outside of the front housing 2 to the inside of the front housing 2. A second groove is also formed on the front housing 2. The second groove is coaxially arranged with the first groove and extends from the inside of the front housing 2 to the outside of the front housing 2. An electrostatic grid 5 with a set thickness (the thickness of the electrostatic grid 5 can be specifically designed according to the actual situation) is formed between the first groove and the second groove. The electrostatic grid 5 is used to increase the creepage distance between the lens assembly 1 and the sensor plate 3, thereby achieving isolation between the lens assembly 1 and the sensor plate 3. A connecting hole is formed on the electrostatic grid 5 to connect the first groove and the second groove. The radial width of the connecting hole is smaller than the radial width of the first groove and the second groove, so that the electrostatic grid 5 has a set width in the radial direction. This width can be designed according to the actual situation, as long as the electrostatic isolation effect is guaranteed.

[0034] Specifically, as shown in the appendix Figure 3 and attached Figure 4As shown, multiple annular grooves 11 are formed on the end face of the electrostatic grid 5 near the first groove. The annular grooves 11 are filled with conductive adhesive, and adjacent annular grooves 11 are connected by connecting holes, which are also filled with conductive adhesive. Conductive adhesive is a special adhesive that combines conductivity and adhesion. It is made by dispersing conductive fillers (such as silver, nickel, or silver-plated copper particles) in a polymer matrix (such as epoxy resin or silicone rubber). Its core value lies in replacing traditional welding or mechanical fixing to achieve electrical connection, electromagnetic shielding (EMC), and environmental sealing of electronic components. Thus, by filling with conductive adhesive, static electricity on the lens assembly 1 can be transferred, while also improving the adhesion between the lens assembly 1 and the front housing 2. Adjacent annular grooves 11 are connected by connecting holes, which are also filled with conductive adhesive. When the static electricity distribution on the lens assembly 1 is uneven, resulting in varying amounts of static electricity absorbed by the conductive adhesive, the connection through the connecting holes allows static electricity on the conductive adhesive at different locations to be transferred to each other, thereby ensuring effective absorption of static electricity on the lens assembly 1.

[0035] Specifically, as shown in the appendix Figure 5 and attached Figure 6 As shown, a first protrusion 6 protrudes outward at the location where the lens assembly 1 connects to the outer side of the front housing 2. A first groove extends outward and penetrates the first protrusion 6. One end of the lens assembly 1 extends into the first groove and connects to the front housing 2, while the other end of the lens assembly 1 protrudes from the first protrusion 6. A second protrusion 8 protrudes inward at the location where the second groove is formed on the inner side of the front housing 2. The second groove extends inward and penetrates the second protrusion 8. The sensor plate 3 extends into the second groove at the corresponding position. In this way, by setting the first protrusion 6 and making the first groove penetrate the first protrusion 6, the first protrusion 6 is used to meet the installation requirements of the lens assembly 1. The front housing 2 only needs to have a larger thickness at the location where the lens assembly 1 is installed, while the rest can maintain a smaller thickness. This allows for a lightweight design of the front housing 2 as a whole. By setting the second protrusion 8, the increased local thickness formed by the second protrusion 8 meets the installation requirements and increases the creepage distance. By extending part of the sensor plate 3 into the second groove, the overall thickness of the vehicle camera can be reduced, achieving a miniaturized design. Therefore, the design of the first protrusion 6 and the second protrusion 8 can achieve the lightweight design of the front shell 2 and the miniaturization of the entire vehicle camera while ensuring the installation effect.

[0036] Specifically, the lens assembly 1 includes a lens element and a lens barrel. The lens element is installed inside the lens barrel, and the lens barrel is fixedly connected to the front housing 2. Multiple conductive plates 7 are arranged around the first protrusion 6. One end of each conductive plate 7 is connected to the front housing 2, and the other end is connected to the lens barrel. In this specific embodiment, three conductive plates 7 are arranged around the first protrusion 6, and the three conductive plates 7 are evenly distributed circumferentially. Thus, by arranging multiple conductive plates 7 around the first protrusion 6 and connecting the two ends of each conductive plate 7 to the front housing 2 and the lens barrel respectively, static electricity on the lens barrel can be transferred to the front housing 2 using the conductive plates 7, thereby further reducing the potential impact of static electricity on the lens assembly 1 on the sensor plate 3. The even distribution of the three conductive plates 7 circumferentially ensures that static electricity at different locations on the lens assembly 1 can be effectively transferred through the corresponding conductive plates 7.

[0037] This solution forms an electrostatic grid 5 between the first and second grooves, and mounts the lens assembly 1 in the first groove. This utilizes the electrostatic grid 5 formed on the front housing 2 to isolate the lens assembly 1 and the sensor plate 3, increasing their creepage distance. Therefore, there is no need for additional metal springs or electrostatic foam, saving a component and reducing cost, while also simplifying the installation process. Furthermore, to further enhance the static elimination effect, this solution also provides multiple annular grooves 11 on the end face of the electrostatic grid 5 near the first groove. These annular grooves 11 are filled with conductive adhesive, and multiple conductive sheets 7 are arranged around the first protrusion 6. The conductive adhesive and conductive sheets 7 effectively absorb and transfer static electricity from the lens assembly 1, thereby further reducing the potential impact of static electricity from the lens assembly 1 on the sensor plate 3.

[0038] In summary, this solution can greatly reduce the impact of static electricity from lens assembly 1 on sensor board 3, without requiring additional parts, thus avoiding increased usage costs and complicated installation processes.

[0039] Compared with the prior art, this utility model achieves the purpose of eliminating static electricity by adding an electrostatic grid 5 to the front shell 2, which ensures performance without the need for additional parts, reducing the cost of use and the complexity of installation.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A vehicle-mounted camera having an electrostatic elimination structure, characterized by comprising: The device includes a lens assembly, a front housing, a sensor plate, and a rear housing. One side of the front housing is fixedly connected to the lens assembly, and the other side of the front housing is fixedly connected to the rear housing. A mounting chamber is formed between the front housing and the rear housing. The sensor plate is disposed in the mounting chamber and fixedly connected to the front housing. A first groove is formed on the front housing at a position where it mates with the lens assembly. The first groove extends from the outside to the inside of the front housing. A second groove is also formed on the front housing. The second groove is coaxially arranged with the first groove and extends from the inside to the outside of the front housing. An electrostatic grid with a predetermined thickness is formed between the first groove and the second groove. A connecting hole is formed on the electrostatic grid to connect the first groove and the second groove. The radial width of the connecting hole is smaller than the radial width of the first groove and the second groove, so that the electrostatic grid has a predetermined width in the radial direction. A plurality of annular grooves are formed on the end face of the electrostatic grid near the first groove. The annular grooves are filled with conductive adhesive.

2. The vehicle camera with electrostatic elimination structure according to claim 1, characterized in that, The two adjacent annular grooves are connected by a connecting hole, which is also filled with conductive adhesive. 3.The car-mounted camera with the electrostatic elimination structure according to claim 1, characterized in that, A first protrusion is provided on the outer side of the front housing at the position where it connects with the lens assembly. The first groove extends outward and passes through the first protrusion. One end of the lens assembly extends into the first groove and connects with the front housing, while the other end of the lens assembly protrudes from the first protrusion.

4. The vehicle camera with electrostatic elimination structure according to claim 1, characterized in that, A second boss is provided inwardly at the location where the second groove is opened on the inner side of the front shell, and the second groove extends inward and passes through the second boss.

5. The vehicle-mounted camera with an electrostatic elimination structure according to claim 4, characterized in that, The portion of the sensor plate corresponding to the second groove extends into the second groove.

6. The vehicle-mounted camera with an electrostatic elimination structure according to claim 3, characterized in that, The lens assembly includes a lens and a lens barrel. The lens is installed inside the lens barrel, and the lens barrel is fixedly connected to the front shell. A plurality of conductive plates are arranged around the first protrusion. One end of the conductive plate is connected to the front shell, and the other end of the conductive plate is connected to the lens barrel.

7. The vehicle-mounted camera with an electrostatic elimination structure according to claim 6, characterized in that, Three conductive plates are arranged around the first protrusion, and the three conductive plates are evenly distributed in the circumferential direction.

8. The vehicle-mounted camera with an electrostatic elimination structure according to claim 1, characterized in that, The lens assembly is bonded and fixed to the front shell.

9. The vehicle-mounted camera with an electrostatic elimination structure according to claim 1, characterized in that, The sensor plate is fixedly connected to the front shell by screws.

10. The vehicle-mounted camera with an electrostatic elimination structure according to claim 1, characterized in that, Multiple buckles are provided around the front shell, and a retaining ring is provided on the rear shell at a position corresponding to the buckle. The retaining ring has a retaining hole, and the buckle is engaged in the retaining hole.

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