Vehicle-mounted camera circuit cover plate with strong magnetic interference resistance

Abstract

The utility model relates to the technical field of vehicle-mounted cameras, in particular to a vehicle-mounted camera circuit cover plate, a protective cover covers a vehicle-mounted camera circuit, and the height of a turned-over edge is 4-8 mm; the cover bottom of the protective cover is provided with a mounting hole which is over against a lens of the vehicle-mounted camera; transparent glass for protecting the vehicle-mounted camera is arranged in the mounting hole of the cover bottom; a soft magnetic adhesive tape layer is attached to the face, facing the turned-over edge, of the cover bottom, a semiconductor adhesive tape layer is attached to the soft magnetic adhesive tape layer, and the soft magnetic adhesive tape layer and the semiconductor adhesive tape layer are attached to form a shielding layer. The shielding layer avoids the position of the mounting hole in the cover bottom; a magnetic rubber ring formed by mixing rubber and soft magnetic powder is arranged on the edge of the transparent glass, and the transparent glass with the magnetic rubber ring is embedded into the mounting hole of the cover bottom; a transparent magnetic conductive metal layer is evaporated on the transparent glass; and a vehicle-mounted camera element can be protected from being damaged by a strong magnetic field.

Description

Technical Field

[0001] This application relates to the technical field of vehicle-mounted cameras, and in particular to a circuit cover plate for a vehicle-mounted camera. Background Art

[0002] The camera of a driverless vehicle is an important part of the visual perception system of the driverless vehicle, which can obtain and analyze information about the surrounding roads, traffic signs, pedestrians, vehicles, etc. in real time, and help the driverless vehicle make correct driving decisions.

[0003] However, the camera may be affected by strong magnetic fields and cause malfunctions or damage. The strong magnetic fields can penetrate ordinary circuit cover plates and affect the components of the camera, resulting in damage to the camera or abnormal operation. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and the title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present utility model.

[0005] In view of the above and / or problems existing in the prior art, the present utility model is proposed.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions:

[0007] A circuit cover plate for a vehicle-mounted camera with anti-strong magnetic interference, including a protective cover, and the protective cover includes a cover bottom and a flange arranged around the cover bottom;

[0008] The protective cover covers the vehicle-mounted camera circuit, and the height of the flange is 4 - 8 mm;

[0009] A hole facing the lens of the vehicle-mounted camera is arranged on the cover bottom of the protective cover, which is called the mounting hole;

[0010] A transparent glass for protecting the vehicle-mounted camera is arranged in the mounting hole of the cover bottom;

[0011] A soft magnetic tape layer is attached to the surface of the cover bottom facing the flange, and a semiconductor tape layer is attached to the soft magnetic tape layer. The soft magnetic tape layer and the semiconductor tape layer are bonded to form a shielding layer;

[0012] The shielding layer avoids the position of the mounting hole on the cover bottom;

[0013] A magnetic rubber ring composed of rubber and soft magnetic powder is arranged along the edge of the transparent glass, and the transparent glass with the magnetic rubber ring is embedded in the mounting hole of the cover bottom;

[0014] A transparent magnetic conductive metal layer is vapor-deposited on the transparent glass.

[0015] In the above design, first, the height of the flanging is 4 - 8 mm, so that the interval between the bottom of the protective cover and the flanging of the vehicle-mounted camera circuit reduces the impact of the external shock on the vehicle-mounted camera circuit, ensuring the normal operation of the camera. Finally, a shielding layer is pasted in the interval groove. The shielding layer shields the external strong magnetic field, strong electric field and static electricity. A magnetic rubber ring is arranged on the lens protecting the vehicle-mounted camera, and a transparent magnetic conductive metal layer is vapor-deposited on the transparent glass. The magnetic rubber ring generates a magnetic field to guide and concentrate the external magnetic field, increasing the shielding effect. The magnetic conductive metal layer can effectively shield the external strong magnetic field and protect the vehicle-mounted camera components from being damaged by the strong magnetic field.

[0016] Preferably, a board for protecting the vehicle-mounted camera is connected to the upper side of the flanging of the protective cover, called the upper shielding board. The upper shielding board is located above the transparent glass and extends along the direction from the bottom of the cover to the flanging. The extending length of the upper shielding board is 15 - 25 mm. A shielding layer is also pasted on the lower side of the upper shielding board. By setting the upper shielding board, the upper shielding board protects the vehicle-mounted camera from above, improving the protection ability for the vehicle-mounted camera. The lower side of the upper shielding board is pasted with a soft magnetic tape layer and a shielding layer, preventing the strong magnetic field from damaging the components of the camera from above the vehicle-mounted camera and ensuring that the camera works continuously and effectively without external interference.

[0017] Preferably, the soft magnetic tape layer of the shielding layer uses a soft magnetic tape made of ferrite material; the semiconductor tape layer of the shielding layer uses a copper foil material layer coated with a polyimide film and a carbon black polymer. The protective cover uses a metal cover made of aluminum alloy with a thickness of 1.5 - 2.8 mm. The ferrite soft magnetic tape can provide good soft magnetic properties and flexibility, which is suitable for absorbing and shielding electromagnetic waves and magnetic field interference. The copper foil material layer coated with a polyimide film and a carbon black polymer improves the antistatic performance of the material and can provide a certain degree of shielding function. The aluminum alloy protective cover has high strength and light weight, improving the stability and durability of the vehicle-mounted camera.

[0018] Preferably, a structure sunken into the interval groove is also provided on the protective cover, called a heat dissipation seat. A silica gel heat conduction pad with a thickness of 1 mm - 2.5 mm is connected and arranged on the heat dissipation seat in the interval groove. The length of the silica gel heat conduction pad is 1 - 2 cm, and the width is 1 - 2 cm. The silica gel heat conduction pad has good heat conduction performance and can deform to wrap the electronic components when being impacted, ensuring the long-term stable operation of the vehicle-mounted camera.

[0019] Preferably, staggered strip grooves are formed on the surface of the heat dissipation seat connecting the silica gel heat conduction pad to form a mesh structure, called a heat dissipation net. The depth of the heat dissipation net is 0.1 - 0.4 mm. The setting of the heat dissipation net enhances the heat dissipation ability of the protective cover and ensures the long-term stable operation of the vehicle-mounted camera.

[0020] Preferably, a rib plate is provided at the root of the upper shielding plate; by providing the rib plate, the upper shielding plate is not easily deformed, improving the protection ability of the upper shielding plate.

[0021] Preferably, an outward extending structure for installing the protection cover, called a clamping head, is arranged along the edge of the turning edge of the protection cover; the length of the clamping head extending outward from the turning edge is 1.5 - 4.5 mm; by providing the clamping head, a clamping groove corresponding to the clamping head is provided on the outer shell of the vehicle-mounted camera, and the clamping head is clamped in the clamping groove, facilitating the installation of the protection cover on the circuit cover plate.

[0022] Preferably, at least two threaded through holes for fixing the protection cover are further provided on the turning edge; by providing the threaded through holes, it is convenient to fix the protection cover to the circuit cover plate with bolts, and cooperate with the clamping head to ensure the stable connection of the protection cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0024] Figure 1 Schematic diagram of the side rear structure of the vehicle-mounted camera protection cover with anti-strong magnetic interference provided by an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the side front structure of the vehicle-mounted camera protection cover with anti-strong magnetic interference provided by an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the side rear view structure of the vehicle-mounted camera protection cover with anti-strong magnetic interference provided by an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the sectional view at the heat dissipation seat of the vehicle-mounted camera with anti-strong magnetic interference provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the above objects, features, and advantages of the present invention more understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings of the specification.

[0029] In the following description, numerous specific details are set forth to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0030] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present utility model, for ease of illustration, the cross-sectional views showing the device structure will be enlarged locally out of proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0031] Furthermore, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present utility model. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or selectively exclusive embodiment with other embodiments.

[0032] Embodiment 1

[0033] Referring to Figure 1 and Figure 2 , this embodiment provides a vehicle-mounted camera circuit cover plate with strong magnetic interference resistance, including a protective cover 1, and the protective cover 1 includes a cover bottom 2 and a flange 3 arranged around the cover bottom 2.

[0034] The protective cover 1 covers the in-vehicle camera circuit, and the height of the flanging 3 is 4 - 8 mm; a hole facing the lens of the in-vehicle camera is provided on the cover bottom 2 of the protective cover 1, which is called the mounting hole; a transparent glass 4 for protecting the in-vehicle camera is provided in the mounting hole of the cover bottom 2; a soft magnetic tape layer is pasted on the surface of the cover bottom 2 facing the flanging 3, and a semiconductor tape layer is pasted on the soft magnetic tape layer, and the soft magnetic tape layer and the semiconductor tape layer are laminated to form a shielding layer; the shielding layer avoids the position of the mounting hole on the cover bottom 2, and a magnetic rubber ring 41 composed of rubber and soft magnetic powder is provided along the edge of the transparent glass 4, and the transparent glass 4 with the magnetic rubber ring 41 is embedded in the mounting hole of the cover bottom 2; a transparent magneto-conductive metal layer is evaporated on the transparent glass 4; when the height of the flanging 3 is 4 - 8 mm, the interval between the cover bottom 2 and the flanging 3 of the protective cover 1 reduces the influence of external impact on the in-vehicle camera circuit, ensuring the normal operation of the camera. Finally, a shielding layer is pasted in the interval groove, and the shielding layer shields external strong magnetic fields, strong electric fields and static electricity. A magnetic rubber ring 41 is provided on the lens protecting the in-vehicle camera, and a transparent magneto-conductive metal layer is evaporated on the transparent glass 4. The magnetic rubber ring 41 generates a magnetic field to guide and concentrate the external magnetic field, increasing the shielding effect. The magneto-conductive metal layer can effectively shield external strong magnetic fields and protect the in-vehicle camera components from being damaged by strong magnetic fields.

[0035] The process of evaporating a transparent magneto-conductive metal layer on the transparent glass is generally called the transparent magneto-conductive coating technology. This technology can form a magneto-conductive metal thin film on the surface of the transparent glass, making the glass have magneto-conductive properties. The application fields of the transparent magneto-conductive coating technology are very extensive. For example, it is applied in fields such as electronic displays, touch screens, solar cells, and disk drives. The main advantage of this technology is that it can maintain the transparency of the raw material while endowing the glass with magneto-conductive properties.

[0036] A board for protecting the in-vehicle camera is connected to the upper side of the flanging 3 of the protective cover 1, which is called the upper shielding board 5. The upper shielding board 5 is located above the transparent glass 4, and the upper shielding board 5 extends along the direction from the cover bottom 2 to the flanging 3; the extending length of the upper shielding board 5 is 15 - 25 mm; a shielding layer is also pasted on the lower side of the upper shielding board 5. By setting the upper shielding board 5, the upper shielding board 5 protects the in-vehicle camera from above, improving the protection ability of the in-vehicle camera. A soft magnetic tape layer and a shielding layer are pasted on the lower side of the upper shielding board 5 to prevent strong magnetic fields from damaging the components of the camera from above the in-vehicle camera, ensuring that the camera works continuously and effectively without external interference.

[0037] The soft magnetic tape layer of the shielding layer adopts a soft magnetic tape of ferrite material; the semiconductor tape layer of the shielding layer adopts a copper foil material layer coated with polyimide film and carbon black polymer; the protective cover 1 adopts a metal cover made of aluminum alloy with a thickness of 1.5-2.8mm; the ferrite soft magnetic tape can provide good soft magnetic properties and flexibility, and is suitable for absorbing and shielding electromagnetic waves and magnetic field interference. The copper foil material layer coated with polyimide film and carbon black polymer improves the antistatic properties of the material and can provide a certain degree of shielding function; the protective cover 1 made of aluminum alloy has high strength and light weight, which improves the stability and durability of the vehicle-mounted camera.

[0038] The root of the upper shield plate 5 is provided with a rib plate 51 ; by providing the rib plate 51 , the upper shield plate 5 will not be easily deformed, thereby improving the protection capability of the upper shield plate 5 .

[0039] When in use, first stick the soft magnetic tape layer on the bottom of the cover 2 and under the upper shield 5, and then stick the shielding layer on the soft magnetic tape layer. The conductive part of the shielding layer is conductively connected to the aluminum alloy protective cover 1, and the soft magnetic tape layer and the shielding layer are also stuck on the lower side of the upper shield 5. When the protective cover 1 is installed on the vehicle camera, the vehicle camera is kept at a certain distance from the outside world through the spacing groove to reduce the impact of external shock on the vehicle camera circuit. The soft magnetic tape layer and the shielding layer also prevent strong magnetism from directly acting on the vehicle camera to damage the components of the vehicle camera. The magnetic rubber ring 41 generates a magnetic field to guide and concentrate the external magnetic field to increase the shielding effect. In this way, the strong magnetic field from the outside world can be effectively shielded, and the vehicle camera components will not be damaged by the strong magnetic field.

[0040] Example 2

[0041] Reference Figures 2 - 4 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0042] The protective cover 1 is also provided with a structure sunken into the spacing groove, called a heat sink 6; the heat sink 6 in the spacing groove is connected to a silicone thermal pad 61 with a thickness of 1mm-2.5mm; the silicone thermal pad 61 has a length of 1-2cm and a width of 1-2cm; the silicone thermal pad 61 has good thermal conductivity and can deform and wrap the electronic components when impacted, thereby ensuring long-term stable operation of the vehicle-mounted camera.

[0043] The surface of the heat sink 6 connected to the silicone thermal pad 61 is provided with staggered strip grooves to form a mesh structure, called a heat sink 62; the depth of the heat sink 62 is 0.1-0.4mm; the heat sink 62 is provided to enhance the heat dissipation capacity of the protective cover 1 and ensure long-term stable operation of the vehicle-mounted camera.

[0044] The flanging 3 of the protective cover 1 is provided with an outward extending structure for installing the protective cover 1 along the edge, which is called a clamping head 31; the length of the clamping head 31 extending outward from the flanging 3 is 1.5 - 4.5 mm; by setting the clamping head 31, a clamping groove corresponding to the clamping head 31 is provided on the outer shell of the vehicle-mounted camera, and the clamping head 31 is clamped in the clamping groove, which facilitates the installation of the protective cover 1 on the circuit cover plate.

[0045] At least two threaded through holes 32 for fixing the protective cover 1 are also provided on the flanging 3; by setting the threaded through holes 32, it is convenient to fix the protective cover 1 to the circuit cover plate with bolts, and cooperate with the clamping head 31 to ensure the stable connection of the protective cover 1.

[0046] During use, when installing the protective cover 1, the soft magnetic tape layer and the shielding layer are attached to the protective cover 1, then the silicone thermal conductive pad 61 is attached to the heat dissipation seat 6, and then the protective cover 1 is clamped in the clamping groove corresponding to the clamping head 31 on the outer shell of the vehicle-mounted camera through the clamping head 31, the silicone thermal conductive pad 61 is attached to the circuit board of the vehicle-mounted camera, and then the protective cover 1 is fixed to the vehicle-mounted camera with bolts passing through the threaded through holes 32. The silicone thermal conductive pad 61 has good thermal conductivity and can deform to wrap the electronic components when impacted, and cooperates with the heat dissipation net 62 for heat dissipation to ensure the long-term stable operation of the vehicle-mounted camera. The bolts cooperate with the clamping head 31 to ensure the stable connection of the protective cover 1 to the vehicle-mounted camera.

[0047] Importantly, it should be noted that the configurations and arrangements of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel aspects and advantages of the subject matter described in this application. For example, the dimensions, scales, structures, shapes and proportions of various components, as well as parameter values (e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc. For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the functions described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangements of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] In addition, to provide a concise description of the exemplary embodiments, all features of the actual embodiments, i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present utility model or those features that are not relevant to the implementation of the present utility model, may not be described.

[0049] It should be understood that in the development of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, the development efforts will be a routine task of design, fabrication, and production.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered by the scope of the claims of the present utility model.

Claims

1. A vehicle-mounted camera circuit cover plate with anti-strong magnetic interference, including a protective cover. The protective cover includes a cover bottom and a flange arranged around the cover bottom. It is characterized in that: The protective cover covers the vehicle-mounted camera circuit, and the height of the flange is 4 - 8 mm; A hole facing the lens of the vehicle-mounted camera is arranged on the cover bottom of the protective cover, which is called the mounting hole; A transparent glass for protecting the vehicle-mounted camera is arranged in the mounting hole of the cover bottom; A soft magnetic tape layer is pasted on the surface of the cover bottom facing the flange, and a semiconductor tape layer is pasted on the soft magnetic tape layer. The soft magnetic tape layer and the semiconductor tape layer are bonded to form a shielding layer; The shielding layer avoids the position of the mounting hole on the cover bottom; A magnetic rubber ring composed of rubber and soft magnetic powder is arranged along the edge of the transparent glass. The transparent glass with the magnetic rubber ring is embedded in the mounting hole of the cover bottom; A transparent magnetic conductive metal layer is evaporated on the transparent glass.

2. The vehicle-mounted camera circuit cover plate with strong anti-magnetic interference according to claim 1, characterized in that: A plate for protecting the vehicle-mounted camera is connected to the upper side of the flange of the protective cover, which is called the upper shielding plate. The upper shielding plate is located above the transparent glass, and the upper shielding plate extends along the direction from the cover bottom to the flange; The extending length of the upper shielding plate is 15 - 25 mm; A shielding layer is also pasted on the lower side of the upper shielding plate.

3. The vehicle-mounted camera circuit cover plate with anti-strong magnetic interference according to claim 1, wherein: The soft magnetic tape layer of the shielding layer uses a soft magnetic tape made of ferrite material; The semiconductor tape layer of the shielding layer uses a copper foil material layer coated with a polyimide film and carbon black polymer The protective cover uses a metal cover made of aluminum alloy with a thickness of 1.5 - 2.8 mm.

4. The in-vehicle camera circuit cover plate with anti-strong magnetic interference according to claim 3, characterized in that: A structure sunken into the spacer groove is also arranged on the protective cover, which is called a heat dissipation seat; A silica gel heat conduction pad with a thickness of 1 mm - 2.5 mm is connected and arranged on the heat dissipation seat in the spacer groove; The length of the silica gel heat conduction pad is 1 - 2 cm, and the width is 1 - 2 cm.

5. The vehicle-mounted camera circuit cover plate with strong magnetic interference resistance according to claim 4, characterized in that: Strip-shaped grooves are arranged in a staggered manner on the surface of the heat dissipation seat where the silica gel heat conduction pad is connected to form a mesh structure, which is called a heat dissipation net; The depth of the heat dissipation net is 0.1 - 0.4 mm.

6. The vehicle-mounted camera circuit cover plate with strong anti-magnetic interference according to claim 2, characterized in that: A rib plate is arranged at the root of the upper shielding plate.

7. The in-vehicle camera circuit cover plate with strong anti-magnetic interference according to claim 1, characterized in that: An outward extending structure for installing the protective cover is arranged in an edge arrangement along the flange of the protective cover, which is called a clamping head; The length of the clamping head extending out from the flange is 1.5 - 4.5 mm.

8. The vehicle-mounted camera circuit cover plate with strong anti-magnetic interference according to claim 7, characterized in that: At least two threaded through holes for fixing the protective cover are also opened on the flange.

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