CN220140066U - Electromagnetic compatibility protective structure and vehicle-mounted camera - Google Patents
Electromagnetic compatibility protective structure and vehicle-mounted camera Download PDFInfo
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- CN220140066U CN220140066U CN202321944426.3U CN202321944426U CN220140066U CN 220140066 U CN220140066 U CN 220140066U CN 202321944426 U CN202321944426 U CN 202321944426U CN 220140066 U CN220140066 U CN 220140066U
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- circuit board
- board assembly
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- protective structure
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- 230000001681 protective effect Effects 0.000 title claims description 14
- 238000004891 communication Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 230000001965 increasing effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model provides an electromagnetic compatibility protection structure and a vehicle-mounted camera, wherein the electromagnetic compatibility protection structure comprises a shell, wherein the shell is provided with a containing cavity and a connecting hole communicated with the containing cavity; the circuit board assembly is arranged in the accommodating cavity; the shielding cover is arranged in the accommodating cavity and comprises a cover body, a plurality of elastic pieces extending from the side wall of the cover body into the shielding cover and a conducting piece extending from the bottom wall of the cover body into the shielding cover, the cover body is provided with a through hole corresponding to the connecting hole, and the elastic pieces can support the circuit board assembly in a conducting manner; and the adapter penetrates through the connecting hole and the through hole to be electrically connected to the circuit board assembly, and the conducting piece can be in conductive abutting connection with the adapter. The electromagnetic compatibility protection structure can be communicated with the circuit board assembly through the elastic sheet, and the shielding cover and the circuit board assembly form a whole so as to completely enclose the components between the circuit board assembly and the shielding cover, thereby more effectively isolating electromagnetic interference signals and enhancing the electromagnetic interference resistance of the vehicle-mounted camera.
Description
Technical Field
The utility model relates to the technical field of electromagnetic compatibility protection structures in camera modules, in particular to an electromagnetic compatibility protection structure and a vehicle-mounted camera.
Background
With the high-speed development of the automobile industry, the application technology of the vehicle-mounted camera is mature. At present, the existing vehicle-mounted cameras have the problem of electromagnetic interference, and due to the increasing popularization of electronic technology, more and more interference sources enter an electromagnetic environment. As the sensitivity of electronic devices increases, interference and immunity become an increasingly prominent issue. The vehicle-mounted camera is loaded as an advanced driving auxiliary system, the transmission capability of the camera is an extremely important part, and the camera belongs to a high-precision product, so that the use requirement on a camera module is higher, and in the transmission process, the signal is good, so that the important effect is played, wherein the influence of electromagnetic interference generated by an electronic device on the signal transmission of the camera is the greatest.
The normal use of the camera is greatly influenced due to the electromagnetic interference problem, and then the shooting effect of the camera is influenced. In order to solve the electromagnetic interference problem, the existing vehicle-mounted camera is generally provided with an electromagnetic shielding structure, the existing common low-pixel camera shell is mainly divided into two materials, one is made of metal materials, the other is made of plastic materials, and the metal shell is provided with a certain electromagnetic shielding capability, but the metal shell is difficult to form and cannot realize a complex structure; the plastic shell body does not have electromagnetic shielding capability, and electromagnetic interference can be solved by adopting a metal shielding cover generally, but due to structural limitation, the shielding cover is generally smaller in structure or complex in structure, and compared with a camera with the metal shell body, the electromagnetic interference protection effect is poor, and EMC test is difficult to pass.
Disclosure of Invention
Based on this, it is necessary to provide an electromagnetic compatibility protection structure for the electromagnetic interference problem of the vehicle-mounted camera, including:
a housing having a receiving chamber and a connection hole communicating with the receiving chamber;
the circuit board assembly is arranged in the accommodating cavity;
the shielding cover is arranged in the accommodating cavity and comprises a cover body, a plurality of elastic pieces and conducting pieces, the elastic pieces extend into the shielding cover from the side wall of the cover body, the conducting pieces extend into the shielding cover from the bottom wall of the cover body, the cover body is provided with through holes corresponding to the connecting holes, and the elastic pieces can support the circuit board assembly in a conducting mode; and
the adapter penetrates through the connecting hole and the through hole to be electrically connected with the circuit board assembly, and the conducting piece can be in conductive abutting connection with the adapter.
In one embodiment, a plurality of the spring plates are arranged at each corner of the circuit board assembly.
In one embodiment, the spring plate includes a connection portion extending obliquely from a side wall of the housing into the shield case and a support portion extending from the connection portion into the shield case, the support portion being in contact with the circuit board assembly.
In one embodiment, the connecting portion includes two connecting pieces connected to two adjacent side walls of the cover, respectively, and the two connecting pieces are connected to form a reinforcing structure.
In one embodiment, the connection of the connection portion and the support portion has a rounded chamfer.
In one embodiment, the conducting piece comprises a communicating part extending obliquely from the side edge of the connecting hole into the shielding cover and a conducting part extending from the communicating part along the outer surface of the adapter, and the conducting part is attached to the outer surface of the communicating part.
In one embodiment, the spring and the conducting piece are integrally connected to the cover.
In one embodiment, the side wall of the housing has a height within the receiving cavity that is greater than the distance between the circuit board assembly and the bottom wall.
In one embodiment, the side wall of the cover body and the bottom wall of the cover body are respectively attached to the inner wall of the accommodating cavity.
Further, the present utility model also provides a vehicle-mounted camera, including:
a camera body;
the electromagnetic compatibility protecting structure according to any one of the above, wherein the electromagnetic compatibility protecting structure is disposed on the camera body.
The utility model has the advantages that the electromagnetic compatibility protection structure can be communicated with the circuit board assembly through the elastic sheet, and the shielding cover and the circuit board assembly form a whole so as to completely enclose the components between the circuit board assembly and the shielding cover, thereby more effectively isolating electromagnetic interference signals and enhancing the electromagnetic interference resistance of the vehicle-mounted camera.
Drawings
Fig. 1 is a schematic cross-sectional view of a vehicle-mounted camera according to an embodiment of the present utility model;
fig. 2 is a schematic cross-sectional view showing an electromagnetic compatibility protecting structure of the in-vehicle camera according to the above embodiment of the present utility model;
fig. 3 is a schematic top view showing a shield case of an electromagnetic compatibility protection structure of an in-vehicle camera according to the above embodiment of the present utility model;
fig. 4 shows a partially enlarged schematic view of an electromagnetic compatibility guard structure of a vehicle-mounted camera according to the above embodiment of the present utility model.
Reference numerals: 10. a housing; 11. a receiving chamber; 12. a connection hole; 20. a circuit board assembly; 30. a shield; 31. a cover body; 311. a through hole; 32. a spring plate; 321. a connection part; 3211. a connecting sheet; 322. a support part; 33. a conducting plate; 331. a communication section; 332. a conduction part; 40. an adapter; 50. a camera body.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 4, in order to solve the problem of electromagnetic interference in a vehicle-mounted camera, the present utility model provides a vehicle-mounted camera, which may include a camera body 50 and an electromagnetic compatibility protection structure, wherein the electromagnetic compatibility protection structure is disposed on the camera body 50. The electromagnetic protection structure can isolate electromagnetic interference signals and avoid interference to the signal transmission of the vehicle-mounted camera.
In particular, as shown in fig. 2, 3 and 4, the electromagnetic shielding structure may include a housing 10, a circuit board assembly 20, a shield can 30 and an adapter 40. The housing 10 has a receiving chamber 11 and a connection hole 12 communicating with the receiving chamber 11, and the circuit board assembly 20 and the shield can 30 are mounted in the receiving chamber 11. The shield can 30 may include a can body 31, a plurality of spring pieces 32 extending from a sidewall of the can body 31 into the shield can 30, and a conductive piece 33 extending from a bottom wall of the can body 31 into the shield can 30, the can body 31 having a through hole 311 corresponding to the connection hole 12, the spring pieces 32 conductively supporting the circuit board assembly 20. The adaptor 40 is electrically connected to the circuit board assembly 20 through the connection hole 12 and the through hole 311, and the conductive piece 33 is in conductive contact with the adaptor 40. The adapter 40 is used for connecting with other devices to transmit signals on the circuit board assembly 20 to the other devices through the adapter 40. The shielding case 30 is electrically connected to the circuit board assembly 20 through the elastic sheet 32, so that the circuit board assembly 20 and the shielding case 30 form a whole, and the components on the circuit board assembly 20 are wrapped in the whole to fully isolate external electromagnetic interference signals. The conducting piece 33 can be connected with the adapter 40 to prevent electromagnetic interference signals from entering the shielding case 30 from the through hole 311.
More specifically, as shown in fig. 3, in order to avoid a situation where contact points between the shield can 30 and the circuit board assembly 20 are too small, which may result in a situation where the shield can 30 is not connected to the circuit board assembly 20, in one embodiment, a plurality of the spring pieces 32 are disposed at respective corners of the circuit board assembly 20. The corners of the circuit board assembly 20 may be the sides of the circuit board assembly 20 or the corners of the circuit board assembly 20. Through the contact of a plurality of this shell fragment 32 respectively with each corner of this circuit board subassembly 20, constitute more complete circuit, increase the range of putting through of this shield cover 30 and this circuit board subassembly 20, realize fully enclosing this circuit board subassembly 20, improve the anti-electromagnetic interference ability of this electromagnetic compatibility protective structure.
Further, as shown in fig. 2 and 4, in one embodiment, the spring plate 32 includes a connection portion 321 extending obliquely from a side wall of the housing 31 into the shield can 30 and a support portion 322 extending from the connection portion 321 into the shield can 30, and the support portion 322 is in contact with the circuit board assembly 20. In other words, the connecting portion 321 extends obliquely towards the circuit board assembly 20, and the supporting portion 322 extends parallel to the circuit board assembly 20, so that the supporting portion 322 can be completely attached to the circuit board assembly 20, the contact area between the supporting portion 322 and the circuit board assembly 20 is increased, and the problem of poor contact is avoided.
Preferably, as shown in fig. 3 and 4, in one embodiment, the connecting portion 321 includes two connecting pieces 3211 connected to adjacent two sidewalls of the cover 31, respectively, and the two connecting pieces 3211 are connected to form a reinforcing structure. So set up, through the contained angle between two connection pieces 3211, form triangle-shaped's additional strengthening, the force that should be exerted by circuit board assembly 20 in order to support this circuit board assembly 20 and bear can be shared by two this connection pieces 3211 respectively, avoid this connecting portion 321 atress to produce the deformation and lead to this supporting portion 322 unable and this circuit board assembly 20 to contact failure's problem appears, has improved this electromagnetic compatibility protective structure's stability.
More preferably, in one embodiment, the connection portion 321 and the support portion 322 have a rounded corner at the connection. The rounded arc shape of the rounded chamfer can more uniformly distribute the applied force of the connecting portion 321 and the supporting portion 322 than the folded angle shape, so as to more effectively avoid the problem that the elastic sheet 32 is deformed to affect the conduction between the elastic sheet 32 and the circuit board assembly 20.
In particular, as shown in fig. 2 and 4, in one embodiment, the conducting tab 33 includes a communicating portion 331 extending obliquely from a side of the connecting hole 12 into the shielding case 30, and a conducting portion 332 extending from the communicating portion 331 along an outer surface of the adaptor 40, and the conducting portion 332 is attached to the outer surface of the communicating portion 331. In other words, the conducting piece 33 extends from the hole wall of the connection hole 12 to the outer surface of the adapter 40, is in contact conduction with the outer surface through the conducting portion 332, and communicates the adapter 40 and the housing 31 of the shielding case 30 through the communicating portion 331, so as to bring the housing 10 of the adapter 40 into the shielding range of the electromagnetic compatibility protecting structure, and since the conducting piece 33 extends from the connection hole 12, the influence of the communicating hole 311 on the shielding case 30 can be reduced as much as possible. Therefore, the shielding range of the electromagnetic compatibility protective structure is further increased, and the electromagnetic interference resistance of the electromagnetic compatibility protective structure is improved.
Preferably, in one embodiment, the spring plate 32 and the conducting plate 33 are integrally connected to the cover 31. The elastic piece 32 and the conductive piece 33 can be formed by bending after cutting the cover 31 into corresponding shapes. The structural complexity of the shield can 30 is reduced, and the cost of manufacturing the shield can 30 is reduced.
Further, as shown in fig. 1 and 2, in one embodiment, the side wall of the housing 31 has a height within the receiving cavity 11 that is greater than the distance between the circuit board assembly 20 and the bottom wall. I.e., the side walls of the housing 31 can cover the sides of the circuit board assembly 20. Typically, the shield can 30 needs to be pre-installed in the lower case of the housing 10 due to structural limitations, the circuit board assembly 20 needs to be pre-installed in the upper case of the housing 10, and the circuit board assembly 20 may be biased when installed in the upper case of the housing 10. Therefore, to avoid the shield 30 interfering with the circuit board assembly 20 when the upper shell of the housing 10 and the lower shell of the housing 10 are closed, the height of the shield 30 is typically lower than the height of the circuit board assembly 20. In the electromagnetic compatibility protection structure, the circuit board assembly 20 can be directly arranged on the elastic sheet 32 of the shielding case 30, and the circuit board assembly 20 is not required to be fixed on the upper shell of the housing 10, so that the side wall of the case 31 can cover the side edge of the circuit board assembly 20. Thereby further expanding the electromagnetic shielding range of the electromagnetic compatibility protective structure and enhancing the electromagnetic interference resistance of the electromagnetic compatibility protective structure.
Preferably, as shown in fig. 1 and 2, in one embodiment, the side wall of the cover 31 and the bottom wall of the cover 31 are respectively attached to the inner wall of the accommodating cavity 11. In this way, the side wall of the cover 31 and the bottom wall of the cover 31 are attached to the inner wall of the accommodating chamber 11 as much as possible, so that the coverage of the shielding case 30 can be increased, and the circuit board assembly 20 can be more fully covered.
In summary, the utility model provides an electromagnetic compatibility protection structure and a vehicle-mounted camera, which can more comprehensively resist electromagnetic interference signals in the environment, avoid interference of the electromagnetic interference signals on transmission signals of the vehicle-mounted camera, and enable the vehicle-mounted camera to transmit clearer pictures.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. An electromagnetic compatibility protective structure, comprising:
a housing having a receiving chamber and a connection hole communicating with the receiving chamber;
the circuit board assembly is arranged in the accommodating cavity;
the shielding cover is arranged in the accommodating cavity and comprises a cover body, a plurality of elastic pieces and conducting pieces, the elastic pieces extend into the shielding cover from the side wall of the cover body, the conducting pieces extend into the shielding cover from the bottom wall of the cover body, the cover body is provided with through holes corresponding to the connecting holes, and the elastic pieces can support the circuit board assembly in a conducting mode; and
the adapter penetrates through the connecting hole and the through hole to be electrically connected with the circuit board assembly, and the conducting piece can be in conductive abutting connection with the adapter.
2. The electromagnetic compatibility protective structure of claim 1, wherein a plurality of said spring plates are disposed at respective corners of said circuit board assembly.
3. The electromagnetic compatibility protective structure of claim 2, wherein the spring includes a connection portion extending obliquely from a side wall of the housing into the shield and a support portion extending from the connection portion into the shield, the support portion being in contact with the circuit board assembly.
4. An electromagnetic compatibility protecting structure according to claim 3 wherein said connecting portion includes two connecting pieces respectively connected to adjacent two side walls of said cover, two of said connecting pieces being connected to form a reinforcing structure.
5. The electromagnetic compatibility protecting structure of claim 4, wherein the junction of the connecting portion and the supporting portion has a rounded chamfer.
6. The electromagnetic compatibility protective structure of any one of claims 1 to 5, wherein the conductive tab includes a communication portion extending obliquely inward of the shield case from a side edge of the connection hole and a conductive portion extending from the communication portion along an outer surface of the adapter, the conductive portion being attached to the outer surface of the communication portion.
7. The electromagnetic compatibility protective structure of any one of claims 1-5, wherein the spring and the conductive tab are integrally connected to the housing.
8. The electromagnetic compatibility protective structure of any one of claims 1-5, wherein a height of a sidewall of the housing within the receiving cavity is greater than a distance between the circuit board assembly and the bottom wall.
9. The electromagnetic compatibility protecting structure of any one of claims 1 to 5, wherein the side wall of the cover and the bottom wall of the cover are respectively attached to the inner wall of the accommodating chamber.
10. A vehicle-mounted camera, comprising:
a camera body;
the electromagnetic compatibility protecting structure of any one of claims 1-9, which is provided to the camera body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321944426.3U CN220140066U (en) | 2023-07-21 | 2023-07-21 | Electromagnetic compatibility protective structure and vehicle-mounted camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321944426.3U CN220140066U (en) | 2023-07-21 | 2023-07-21 | Electromagnetic compatibility protective structure and vehicle-mounted camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220140066U true CN220140066U (en) | 2023-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321944426.3U Active CN220140066U (en) | 2023-07-21 | 2023-07-21 | Electromagnetic compatibility protective structure and vehicle-mounted camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220140066U (en) |
-
2023
- 2023-07-21 CN CN202321944426.3U patent/CN220140066U/en active Active
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