Shell structure of vehicle-mounted camera module and vehicle-mounted camera module

Abstract

The utility model discloses a shell structure of a vehicle-mounted camera module and the vehicle-mounted camera module, the shell structure comprises a base body and at least two riveting columns, the base body can bear a circuit board, the riveting columns are connected to the base body and extend from the base body to the direction of the circuit board, and at least parts of the riveting columns extend out of the circuit board; the riveting column is provided with a groove with an upward opening, the extending direction of the groove is perpendicular to the axial direction of the riveting column, and the groove penetrates through the riveting column so that flanges can be formed on the two sides of the groove, and the flanges can be bent and deformed to connect the base body and the circuit board. The riveting columns are arranged on the base body, and the base body and the circuit board are connected by using a rivet turning process, so that the space occupied by the structure for fixing the circuit board in the vehicle-mounted camera module is reduced, and meanwhile, the automation degree of the vehicle-mounted camera module can be improved.

Description

Technical Field

[0001] This utility model relates to the field of camera modules, and in particular to a housing structure and a vehicle-mounted camera module. Background Technology

[0002] With the trend of intelligent development in the automotive industry, the technology of in-vehicle camera modules has become increasingly mature. More and more cars are equipped with in-vehicle camera modules as advanced driver assistance systems, which has led to higher and higher requirements for the miniaturization of in-vehicle camera modules. At the same time, with the increase in demand, higher requirements are also placed on the production efficiency of in-vehicle camera modules.

[0003] Therefore, designing a vehicle-mounted camera module that facilitates miniaturization and improves production efficiency has significant practical implications and market value. Utility Model Content

[0004] One objective of this invention is to provide a housing structure for an in-vehicle camera module, which facilitates the miniaturization of the in-vehicle camera module and improves its production efficiency.

[0005] Another objective of this utility model is to provide a vehicle-mounted camera module having the aforementioned housing structure.

[0006] To achieve at least one of the above objectives, the technical solution adopted by this utility model is as follows: a housing structure for a vehicle-mounted camera module, comprising: a base and at least two rivets, wherein the base supports a circuit board, the rivets are connected to the base and extend from the base toward the circuit board, at least a portion of the rivets protrudes from the circuit board; the rivets are provided with an upward-facing groove, the extension direction of the groove is perpendicular to the axial direction of the rivet, and the groove penetrates the rivet to form flanges on both sides of the groove, the flanges being bent and deformed to connect the base and the circuit board.

[0007] Preferably, the cross-sectional dimension of the groove, perpendicular to its extension direction, gradually decreases or remains the same along the direction from the opening of the groove to the bottom of the groove.

[0008] As a preferred embodiment, the length of the rivet is denoted as L1, the depth of the groove is denoted as L2, and the length of the rivet extending out of the circuit board is denoted as L3, satisfying: L1 > L2 > L3.

[0009] As a preferred embodiment, the shell structure includes two rivets, which are located at two corners on the diagonal of the base.

[0010] As a preferred embodiment, when the two rivets are located at two corners on the same side of the base, the flanges of each rivet are arranged in a direction parallel to the side, so that each flange extends in a direction parallel to the side after bending and deformation.

[0011] As a preferred embodiment, the rivet is integrally formed into the substrate.

[0012] As a preferred embodiment, the length of the rivet is denoted as L1, the diameter of the rivet is denoted as d, and the thickness of the portion of the base connected to the rivet is denoted as H, satisfying: H≥1.5d, 3H≥L1.

[0013] To achieve at least one of the above objectives, the technical solution adopted by this utility model is as follows: a vehicle-mounted camera module, comprising: a circuit board, wherein the circuit board is provided with mounting holes; and a housing structure as described above, wherein the rivet of the housing structure passes through the mounting holes, and the flange of the rivet is bent and deformed, so that the circuit board is fixed between the flange and the base of the housing structure.

[0014] As a preferred embodiment, the length of the rivet extending out of the circuit board is denoted as L3, and the distance from the mounting hole to the edge of the circuit board is denoted as T, satisfying: L3≤T.

[0015] As a preferred embodiment, the bilateral clearance between the rivet and the mounting hole is denoted as c, which satisfies the following condition: 0.1mm≤c≤1mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] By setting rivet posts on the base and using a riveting process to connect the base and the circuit board, the space occupied by the structure used to fix the circuit board in the vehicle camera module can be reduced, while the automation level of the vehicle camera module can be improved. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the housing of an in-vehicle camera module in related technologies.

[0019] Figure 2 yes Figure 1 Sectional view along the middle AA.

[0020] Figure 3 This is a perspective view of the housing structure of a vehicle-mounted camera module according to some embodiments of this application.

[0021] Figure 4 This is a schematic diagram of the housing structure of a vehicle-mounted camera module according to some embodiments of this application.

[0022] Figure 5 yes Figure 4 A cross-sectional view along the middle BB.

[0023] Figure 6 yes Figure 5 Enlarged view of point D in the middle.

[0024] Figure 7 This is a schematic diagram of the riveted housing structure of a vehicle-mounted camera module according to some embodiments of this application.

[0025] Figure 8 yes Figure 7 A sectional view along the center CC.

[0026] Figure 9 This is a cross-sectional view of the housing structure of a vehicle-mounted camera module according to other embodiments of this application.

[0027] Figure 10 This is a cross-sectional view of the housing structure of a vehicle-mounted camera module according to other embodiments of this application.

[0028] In the diagram: 10. Shell structure; 11. Base; 111. Bottom wall; 112. Stepped section; 12. Rivet post; 121. Groove; 122. Flanged edge; 20. Circuit board; 21. Mounting hole. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0031] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, a contact connection, or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] A housing structure 10 for a vehicle-mounted camera module, such as Figures 3-10 As shown, it includes: a base 11 and at least two rivets 12. The base 11 supports the circuit board 20. The rivets 12 are connected to the base 11 and extend from the base 11 toward the circuit board 20. At least a portion of the rivets 12 extends out of the circuit board 20. The rivets 12 are provided with an upward-facing groove 121. The extension direction of the groove 121 is perpendicular to the axial direction of the rivet 12, and the groove 121 penetrates the rivet 12 to form flanges 122 on both sides of the groove 121. The flanges 122 can be bent and deformed to connect the base 11 and the circuit board 20.

[0034] like Figure 1 and Figure 2 As shown, in related technologies, bolts are used to fix the circuit board 20 to the base 11. It should be understood that when using bolts for fixing, threaded holes adapted to the bolts need to be made on the base 11. Therefore, the thickness of the base 11 where the threaded holes are made is relatively large, resulting in wasted internal space of the housing. In addition, when assembling the vehicle camera module, tightening the bolts is time-consuming and not conducive to the automated assembly of the vehicle camera module.

[0035] In this embodiment, such as Figures 3-8 As shown, by setting rivets 12 on the base 11 and connecting the base 11 and circuit board 20 using a riveting process, it can be understood that the structural dimensions of the rivet 12 itself are small, and the thickness of the base 11 used to connect the rivet 12 is also small. This makes the structure of the vehicle camera module more compact, meaning that the space occupied by the structure used to fix the circuit board 20 in the vehicle camera module is reduced, which is beneficial for miniaturizing the vehicle camera module. Furthermore, the process of tightening bolts is reduced during the assembly of the vehicle camera module, thereby reducing the assembly difficulty and improving production efficiency. In addition, when fixing the circuit board 20, it is convenient to perform the riveting operation using a flanging machine 122, such as a pneumatic flanging machine, which can improve the automation level of the vehicle camera module, facilitate automated production, further improve production efficiency, and reduce production costs.

[0036] It is worth mentioning that, compared with the riveting process, this application connects the base 11 and the circuit board 20 by bending and deforming the flange 122 of the rivet post 12, which reduces the stress on the circuit board 20 when the punch squeezes the flange 122, thereby reducing the impact on the components on the circuit board 20, which helps to avoid damage to the circuit board 20 and improve the yield of the vehicle camera module.

[0037] In some embodiments, such as Figures 3-9 As shown, along the direction from the opening of the groove 121 to the bottom of the groove 121, the cross-sectional dimension of the groove 121 perpendicular to its extension direction gradually decreases. This guides the punch during the flanging 122 process, facilitating both manual riveting and automated production. Notably, the size of the flanging 122 gradually decreases from the end of the rivet 12 closest to the base 11 to the end furthest from the base 11. This helps avoid significant stress caused by abrupt structural changes, reducing the risk of tearing or breaking the flanging 122 during riveting and improving the structural reliability of the vehicle-mounted camera module.

[0038] In other embodiments, such as Figure 10 As shown, along the direction from the opening of the groove 121 to the bottom of the groove 121, the cross-sectional dimensions of the groove 121 perpendicular to its extension direction are consistent, which reduces the difficulty of machining and forming the rivet 12.

[0039] It is worth mentioning that the cross-section of the groove 121 perpendicular to its extension direction includes, but is not limited to, inverted trapezoid, semi-ellipse, semi-circle, parabolic arc, and rectangle, and this application does not impose specific limitations on it.

[0040] In some embodiments, such as Figure 6 As shown, the length of the rivet 12 is denoted as L1, the depth of the groove 121 as L2, and the length of the rivet 12 extending out of the circuit board 20 as L3, satisfying: L1 > L2 > L3. That is, along the length of the rivet 12, the bottom surface of the groove 121 is located between the top and bottom surfaces of the circuit board 20. The portion of the rivet 12 without the groove 121 has better structural strength, thus providing a positioning function for the circuit board 20. This helps prevent the circuit board 20 from shifting due to deformation of the flange 122 during riveting operations. Furthermore, as... Figure 8 As shown, the portion of the flange 122 extending out of the circuit board 20 is bent and deformed under the action of the punch to fix the circuit board 20 between the flange 122 and the base 11. At this time, the portion of the flange 122 housed in the mounting hole 21 can also undergo transition deformation, which helps the flange 122 to fit the upper surface of the circuit board 20 and reduces the stress of the flange 122, thereby improving the structural reliability of the vehicle camera module.

[0041] In some embodiments, such as Figures 3-10 As shown, the housing structure 10 includes two rivets 12, which are located at the two corners of the base 11 diagonally. That is, the rivets 12 can pass through the two mounting holes 21 on the diagonal of the circuit board 20, so that the two corners of the circuit board 20 diagonally are connected to the base 11 by riveting. This helps to avoid excessive constraint on the circuit board 20, thereby reducing the risk of damage to the circuit board 20 and improving the stability of the vehicle camera module.

[0042] Furthermore, such as Figure 7 and Figure 8 As shown, the flanges 122 of each rivet 12 are arranged in a direction parallel to the side, so that each flange 122 extends in a direction parallel to the side after bending and deformation. This allows the flanges 122 to transmit stress more evenly, which helps to avoid stress concentration in the flanges 122 and also enhances the pull-out resistance of the rivet 12, thereby improving the structural reliability of the vehicle camera module.

[0043] In other embodiments, the housing structure 10 includes three, four, or even more rivets 12, and this application does not impose specific limitations thereon. In at least one embodiment, the housing structure 10 includes three rivets 12, which are respectively located at the three corners of the base 11. That is, three corners of the circuit board 20 are connected to the base 11 by riveting, thereby further improving the stability of the vehicle-mounted camera module. In at least one embodiment, the housing structure 10 includes three rivets 12, two of which are located at the two corners on the same side of the base 11, and the other rivet 12 is located in the middle of the opposite side, to further improve the stability of the vehicle-mounted camera module. In at least one embodiment, the housing structure 10 includes four rivets 12, which are respectively located at the four corners of the base 11. That is, all four corners of the circuit board 20 are connected to the base 11 by riveting, thereby further improving the stability of the vehicle-mounted camera module.

[0044] It is worth mentioning that the corners of the substrate 11 where no rivet 12 is provided can be provided with structures such as guide posts, elastic clips, and conductive adhesive, so that the two corners of the circuit board 20 that are not connected to the substrate 11 by riveting can be connected to the substrate 11 by structures such as guide posts, elastic clips, and conductive adhesive. This can not only improve the connection strength and reliability between the circuit board 20 and the substrate 11, but also allow the circuit board 20 to undergo appropriate displacement or deformation in its plane.

[0045] In some embodiments, such as Figures 3-10As shown, the rivet 12 is integrally formed into the base 11, which improves the connection strength between the rivet 12 and the base 11, and enhances the pull-out resistance of the rivet 12. In addition, the integrally formed shell structure 10 helps to avoid introducing stress concentration sources such as holes and gaps into the base 11, and also reduces the sealing difficulty of the shell structure 10, thus facilitating the sealing design of the vehicle camera module.

[0046] In some embodiments, such as Figure 6 As shown, the length of the rivet 12 is denoted as L1, the diameter of the rivet 12 is denoted as d, and the thickness of the part of the base 11 connected to the rivet 12 is denoted as H, satisfying: H≥1.5d, 3H≥L1. It should be understood that the shell structure 10 is integrally formed through processes such as forging, casting, or additive manufacturing. If H<1.5d, during the processing of the shell structure 10, insufficient thickness of the base 11 may lead to stress concentration, cracking, and other defects. If 3H<L1, the rivet 12 may be too long, causing deformation or fracture of the base 11, or resulting in poor structural strength of the rivet 12. In this application, H≥1.5d and 3H≥L1 are satisfied, thus balancing the structural strength of the shell structure 10 and facilitating the miniaturization of the vehicle-mounted camera module.

[0047] In at least one embodiment, such as Figures 3-10 As shown, the substrate 11 includes a bottom wall 111 and a stepped portion 112. The stepped portion 112 protrudes from the bottom wall 111 toward the circuit board 20. A rivet 12 is connected to the stepped portion 112, thereby locally thickening the area where the substrate 11 connects to the rivet 12 to improve the structural strength of the housing structure 10. At the same time, other parts of the substrate 11, such as the bottom wall 111, can maintain a relatively thin size, which is beneficial for miniaturizing the vehicle camera module and for heat dissipation. In addition, the circuit board 20, mounted on the stepped portion 112, is suspended above the bottom wall 111, which further improves the heat dissipation efficiency of the circuit board 20, thereby improving the stability of the vehicle camera module.

[0048] A vehicle-mounted camera module, such as Figures 3-10 As shown, it includes: a circuit board 20 and the aforementioned housing structure 10. The circuit board 20 is provided with mounting holes 21. The rivet 12 of the housing structure 10 passes through the mounting holes 21, and the flange 122 of the rivet 12 is bent and deformed, so that the circuit board 20 is fixed between the flange 122 and the base 11 of the housing structure 10.

[0049] In some embodiments, such as Figures 6-8As shown, the length of the rivet 12 extending out of the circuit board 20 is denoted as L3, and the distance from the mounting hole 21 to the edge of the circuit board 20 is denoted as T. The condition that L3≤T is met helps to prevent the flange 122 of the rivet 12 from extending beyond the circuit board 20 after bending and deformation, thereby reducing the risk of interference between the flange 122 and the base 11 or other components, and making the structure of the vehicle camera module more compact, which is conducive to the miniaturization of the vehicle camera module.

[0050] In some embodiments, the bilateral clearance between the rivet 12 and the mounting hole 21 is denoted as c, satisfying: 0.1mm ≤ c ≤ 1mm. This allows the rivet 12 to be inserted more easily into the mounting hole 21 of the circuit board 20, helping to avoid scratching the hole wall with the rivet 12; it also reduces the space occupied by the mounting hole 21 on the circuit board 20. Furthermore, the cooperation between the rivet 12 and the mounting hole 21 can also provide auxiliary positioning for the circuit board 20. It should be understood that the bilateral clearance c is the diameter of the mounting hole 21. The difference between the diameter d of the rivet 12 and that of the rivet post 12 is... .

[0051] The basic principles, main features, and advantages of this utility model have been described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A housing structure for a vehicle-mounted camera module, characterized in that, include: A base and at least two rivets, the base supporting a circuit board, the rivets being connected to the base and extending from the base toward the circuit board, at least a portion of the rivets extending out of the circuit board; The rivet post has an upward-facing groove, the groove extending perpendicular to the axial direction of the rivet post, and the groove penetrates the rivet post to form flanges on both sides of the groove. The flanges can be bent and deformed to connect the substrate and the circuit board.

2. The shell structure according to claim 1, characterized in that, Along the direction from the opening of the groove to the bottom of the groove, the cross-sectional dimension of the groove perpendicular to its extension direction gradually decreases or remains the same.

3. The shell structure according to claim 1, characterized in that, The length of the rivet is denoted as L1, the depth of the groove is denoted as L2, and the length of the rivet extending out of the circuit board is denoted as L3, satisfying: L1 > L2 > L3.

4. The shell structure according to claim 1, characterized in that, It includes two rivet posts, which are located at the two corners of the diagonal of the base.

5. The shell structure according to claim 4, characterized in that, When the two rivets are located at two corners on the same side of the base, the flanges of each rivet are arranged in a direction parallel to the side, so that each flange extends in a direction parallel to the side after bending and deformation.

6. The shell structure according to any one of claims 1-5, characterized in that, The rivet is integrally formed on the substrate.

7. The shell structure according to claim 6, characterized in that, The length of the rivet is denoted as L1, the diameter of the rivet is denoted as d, and the thickness of the part of the base connected to the rivet is denoted as H, satisfying: H≥1.5d, 3H≥L1.

8. A vehicle-mounted camera module, characterized in that, include: The circuit board is provided with mounting holes; In any one of claims 1-7, the rivet of the housing structure passes through the mounting hole, and the flange of the rivet is bent and deformed so that the circuit board is fixed between the flange and the base of the housing structure.

9. The vehicle-mounted camera module according to claim 8, characterized in that, The length of the rivet extending out of the circuit board is denoted as L3, and the distance from the mounting hole to the edge of the circuit board is denoted as T, satisfying: L3≤T.

10. The vehicle-mounted camera module according to claim 8, characterized in that, The bilateral clearance between the rivet and the mounting hole is denoted as c, and satisfies the following condition: 0.1mm≤c≤1mm.

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