Vehicle camera module

Abstract

The utility model discloses an automobile camera module, comprising: front cover, the lens of AA technology is assembled in the installation cylinder of front cover, and the lens includes the stop ring and the inner end part and the outer end part of being located at the opposite two sides of stop ring respectively, and the inner end part is inserted into the installation cylinder, and the stop ring is bonded between the outer end surface of installation cylinder through AA glue, and the cover cylinder of cover in the lens and the outside of installation cylinder, and the inner hole of cover cylinder is the stepped hole and has the large diameter end and small diameter end, and the outer end hole of small diameter end is exposed to the outside of the outer end of lens, and the point glue groove is equipped on the cylinder wall of large diameter end, and the space that the joint stage surface of large diameter end and small diameter end, the outside wall of installation cylinder and stop ring, the inside wall of large diameter end and the outside wall of front cover enclose forms is filled and sealed by the seal glue that injects through point glue groove. The utility model discloses an automobile camera module, can effectively prevent AA glue from being irradiated by sunlight, and be eroded by outside air, water vapor, delay the aging deterioration of AA glue.

Description

Technical Field

[0001] This utility model relates to the field of vehicle camera technology, and in particular to a vehicle camera module. Background Technology

[0002] As vehicle cameras demand increasingly higher levels of waterproofing, the connection between the camera lens and the camera cover—the frontmost structure of the vehicle camera—also requires higher levels of waterproofing and faces more stringent environmental requirements.

[0003] Existing vehicle cameras mainly use two mature lens assembly processes. The first is a threaded structure, in which the lens and camera module are fixedly connected by a threaded structure. The second is an AA structure, in which the lens and camera module are aligned by an active alignment process (AA process) and then fixed with AA glue.

[0004] Both threaded and AA structures can meet high waterproofing requirements, but they also have limitations and uncertainties in their design. The main problems with the original design are as follows: 1. The threaded structure places higher demands on the production precision and stability of the optical module. At the same time, because the optical axis cannot be adjusted in the X / Y axis direction of the lens, it cannot meet the centering requirements of high-pixel cameras, resulting in high manufacturing costs. 2. Lenses using the AA structure rely entirely on adhesive to bond the lens to the front cover, which places very high demands on the adhesive and the usage environment. If the adhesive fails, the camera module will experience image malfunction. 3. If AA glue is exposed to air for too long, it is prone to corrosion and aging. Under harsh operating conditions, the physical properties of the glue will decline, which may lead to the risk of lens falling off. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is to provide a vehicle camera module that can effectively protect AA glue.

[0006] To solve the above-mentioned technical problems, the present invention first provides the following technical solution: a vehicle-mounted camera module, comprising: A front cover with a protruding mounting cylinder at one end; A lens assembled within the mounting cylinder of the front cover using the AA (Alignment and Finish) process, the lens comprising a radially convex stop ring located in the middle section of the lens, and inner and outer ends located on opposite sides of the stop ring, the inner end being inserted into the mounting cylinder, and the stop ring being bonded to the outer end face of the mounting cylinder using AA adhesive; and A cover sleeve covering the lens and the mounting cylinder has an inner hole that is stepped, having a large-diameter end corresponding to the mounting cylinder and the stop ring, and a small-diameter end corresponding to the outer end of the lens. The outer end of the lens is exposed through the outer end opening of the small-diameter end. A dispensing groove is formed on the cylinder wall of the large-diameter end, penetrating the cylinder wall. The space formed by the connecting stepped surfaces of the large-diameter end and the small-diameter end, the outer side walls of the mounting cylinder and the stop ring, the inner side wall of the large-diameter end, and the outer side wall of the front cover is filled and sealed with sealant injected through the dispensing groove.

[0007] Furthermore, an internal thread is formed on the inner wall of the small-diameter end of the cover, and an external thread is formed on the outer wall of the outer end of the lens. The cover and the lens are fixed to each other by being screwed together by the corresponding internal thread and the external thread.

[0008] Furthermore, the outer end of the lens is interference-fitted with the small-diameter end of the cover.

[0009] Furthermore, the sealant fills the space.

[0010] Furthermore, the dispensing groove is located at the end of the large-diameter end of the cover cylinder that is away from the small-diameter end.

[0011] Furthermore, both the AA adhesive and the sealant are UV adhesives.

[0012] Furthermore, the mounting cylinder is cylindrical, and the inner end of the lens is cylindrical with an outer diameter smaller than the inner diameter of the mounting cylinder.

[0013] Furthermore, the vehicle camera module also includes a rear cover that docks with the front cover to form a storage cavity. A circuit board is assembled inside the storage cavity, and a photosensitive chip is provided on the circuit board that faces the lens inserted into the mounting cylinder and is located at the focal point of the lens.

[0014] Furthermore, the rear cover and the front cover are welded together using a laser welding process.

[0015] Furthermore, the outer surface of the cover is provided with several tool clamping positions.

[0016] After adopting the above technical solution, the present utility model embodiment has at least the following beneficial effects: The vehicle camera module provided by the present utility model embodiment, by adding a cover to cover the outside of the lens and the mounting cylinder, can effectively prevent the AA glue from being exposed to sunlight and corroded by external air and moisture, thereby delaying the aging and deterioration of the AA glue, thus ensuring the positional accuracy of the lens and enabling the camera to always have good imaging effect. Furthermore, the inner hole of the cover is a stepped hole, with its small-diameter end corresponding to the outer end of the lens, and its large-diameter end corresponding to the lens stop ring and the mounting cylinder of the front cover. The space formed by the connecting stepped surface between the large-diameter end and the small-diameter end, the outer wall of the mounting cylinder and the stop ring, the inner wall of the large-diameter end, and the outer wall of the front cover is filled and sealed by sealant injected through the glue groove opened on the cylinder wall of the large-diameter end. This further seals the AA glue, resulting in better protection. Moreover, the sealant can effectively bond the front cover, the lens, and the cover into a whole, which helps to improve the positional stability of the lens and prevent the lens from easily shifting during use, thus ensuring the shooting effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the appearance of an optional embodiment of the vehicle-mounted camera module of this utility model in a combined state.

[0018] Figure 2 This is a structural diagram of the disassembled state of an optional embodiment of the vehicle-mounted camera module of this utility model.

[0019] Figure 3 This is a structural schematic diagram of the disassembled state of an optional embodiment of the vehicle-mounted camera module of this utility model from another angle.

[0020] Figure 4 This is a cross-sectional view of an optional embodiment of the vehicle-mounted camera module of this utility model. Detailed Implementation

[0021] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present utility model and are not intended to limit the present utility model. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0022] like Figures 1-4 As shown, an optional embodiment of this utility model provides a vehicle-mounted camera module, comprising: A front cover 1 with a protruding mounting cylinder 10 at one end; A lens 3 is assembled within the mounting cylinder 10 of the front cover 1 using the AA process. The lens 3 includes a radially protruding stop ring 30 located in the middle section of the lens 3, and an inner end portion 32 and an outer end portion 34 located on opposite sides of the stop ring 30. The inner end portion 32 is inserted into the mounting cylinder 10, and the stop ring 30 is bonded to the outer end face of the mounting cylinder 10 using AA glue 4. A cover sleeve 5 covers the outside of the lens 3 and the mounting cylinder 10. The inner hole of the cover sleeve 5 is stepped and has a large diameter end 50 corresponding to the mounting cylinder 10 and the stop ring 30 and a small diameter end 52 corresponding to the outer end 34 of the lens 3. The outer end 34 of the lens 3 is exposed through the outer end hole of the small diameter end 52. A glue groove 500 is provided on the cylinder wall of the large diameter end 50, which penetrates the cylinder wall. The space formed by the connecting step surface 54 of the large diameter end 50 and the small diameter end 52, the outer side wall of the mounting cylinder 10 and the stop ring 30, the inner side wall of the large diameter end 50 and the outer side wall of the front cover 1 is filled and sealed by the sealant 6 injected through the glue groove 500.

[0023] This embodiment of the utility model adds a cover 5 to cover the outside of the lens 3 and the mounting cylinder 10, which can effectively prevent the AA glue 4 from being exposed to sunlight and corroded by external air and moisture, thereby delaying the aging and deterioration of the AA glue, ensuring the positional accuracy of the lens 3, and ensuring that the camera always has a good imaging effect. Furthermore, the inner hole of the cover 5 is a stepped hole, with its small diameter end 52 corresponding to the outer end 34 of the lens 3, and its large diameter end 50 corresponding to the stop ring 30 of the lens 3 and the mounting cylinder 10 of the front cover. The space formed by the connecting stepped surface 54 between the large diameter end 50 and the small diameter end 52, the outer side wall of the mounting cylinder 10 and the stop ring 30, the inner side wall of the large diameter end 50, and the outer side wall of the front cover 1 is filled and sealed by the sealant 6 injected through the glue groove 500 opened on the cylinder wall of the large diameter end 50. Thus, the AA glue 4 can be further sealed, and the protective effect is better. Moreover, the sealant 6 can also effectively bond the front cover 1, the lens 3, and the cover 5 into a whole, which is beneficial to improve the positional stability of the lens 3. During use, the lens 3 is not easily displaced, thus ensuring the shooting effect.

[0024] In one optional embodiment of this utility model, such as Figures 2 to 4As shown, an internal thread 520 is formed on the inner wall of the small-diameter end 52 of the housing 5, and an external thread 340 is formed on the outer wall of the outer end 34 of the lens 3. The housing 5 and the lens 3 are fixed to each other by screwing the internal thread 520 and the external thread 340 respectively. In this embodiment, the small-diameter end 52 of the housing 5 and the outer end 34 of the lens 3 are connected by a threaded connection, which not only makes the housing 5 and the lens 3 firmly connected, but also effectively seals the gap between the small-diameter end 52 of the housing 5 and the outer end 34 of the lens 3, making it difficult for outside air and moisture to enter the interior through this gap.

[0025] In another optional embodiment of this utility model, the outer end portion 34 of the lens 3 is inserted into the small-diameter end 52 of the housing 5 via an interference fit. This embodiment provides another way to assemble and connect the housing 5 and the lens 3, which has a better sealing effect through the interference fit.

[0026] In another optional embodiment of this utility model, the sealant 6 fills the space. This embodiment, by filling the space with the sealant 6, can better seal the AA adhesive, and also allows for a larger bonding area between the cover 5 and the front shell 1 and the lens 3, resulting in a more stable bond.

[0027] In another optional embodiment of this utility model, such as Figures 1 to 4 As shown, the dispensing groove 500 is located at the end of the large-diameter end 50 of the cover 5, away from the small-diameter end 52. In this embodiment, by setting the dispensing groove 500 at the end of the large-diameter end 50 away from the small-diameter end, molding is facilitated. Furthermore, when dispensing through the dispensing groove 500, the camera module can be positioned with the large-diameter end 50 on top and the small-diameter end 52 on the bottom. Thus, the injected sealant 6 will flow naturally under gravity and effectively fill the space. The dispensing groove 500 is relatively small, resulting in a small exposed area of ​​sealant 6, which is beneficial for the long-term effectiveness of the sealant 6.

[0028] In another optional embodiment of this utility model, both the AA adhesive 4 and the sealant 6 are UV adhesives. This embodiment uses UV adhesives as both the AA adhesive and the sealant 6, which is readily available and convenient for application.

[0029] In another optional embodiment of this utility model, such as Figures 1 to 4As shown, the mounting cylinder 10 is cylindrical, and the inner end portion 32 of the lens 3 is cylindrical with an outer diameter smaller than the inner diameter of the mounting cylinder 10. In this embodiment, the mounting cylinder 10 is designed as cylindrical, and the inner end portion 32 of the lens 3 is designed as cylindrical with an outer diameter smaller than the inner diameter of the mounting cylinder 10. This facilitates the insertion and assembly of the two components. Furthermore, during assembly, the inner wall of the mounting cylinder 10 will not scratch or damage the inner end portion 32 of the lens 3, which helps improve the yield rate of the finished product.

[0030] In another optional embodiment of this utility model, such as Figures 1 to 4 As shown, the vehicle-mounted camera module also includes a rear cover 7 that docks with the front cover 1 to form a storage cavity 12. A circuit board 9 is assembled within the storage cavity 12. The circuit board 9 has a photosensitive chip 90 that faces the lens 3 inserted into the mounting cylinder 10 and is located at the focal point of the lens 3. In this embodiment, by further configuring the rear cover 7, the circuit board 9 used to cooperate with the lens 3 is effectively covered, which helps improve image quality. Specifically, in this embodiment, the circuit board 9 can be secured to the inner wall of the front cover 1 using screws 92.

[0031] In another optional embodiment of this utility model, such as Figures 1 to 4 As shown, the rear cover 7 and the front cover 1 are welded together using laser welding. This embodiment uses laser welding to assemble and fix the rear cover 7 and the front cover, resulting in good sealing of the joints and preventing the lens 3 from shifting due to stress caused by traditional screw fastening methods.

[0032] In another optional embodiment of this utility model, such as Figures 1 to 3 As shown, the outer surface of the cover 5 is provided with a plurality of tool clamping positions 56. In this embodiment, by providing a plurality of tool clamping positions 56 on the outer surface of the cover 5, it is convenient to use corresponding tools (e.g., robotic arms) to clamp the cover 5 during the assembly process, thereby improving the automation level of assembly and improving assembly accuracy.

[0033] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many variations under the guidance of the present invention without departing from the inventive spirit and the scope of protection of the claims. These variations are all within the protection scope of the present invention.

Claims

1. A vehicle-mounted camera module, comprising: A front cover with a protruding mounting cylinder at one end; The lens is assembled in the mounting tube of the front cover using the AA process. The lens includes a stop ring located in the middle section of the lens and radially protruding outward, and inner and outer ends located on opposite sides of the stop ring. The inner end is inserted into the mounting tube, and the stop ring is bonded to the outer end face of the mounting tube with AA glue. The feature is that the vehicle-mounted camera module further includes a cover covering the lens and the mounting cylinder. The inner hole of the cover is stepped and has a large-diameter end corresponding to the mounting cylinder and the stop ring and a small-diameter end corresponding to the outer end of the lens. The outer end of the lens is exposed through the outer end hole of the small-diameter end. A glue groove penetrating the cylinder wall is formed on the cylinder wall of the large-diameter end. The space formed by the connecting stepped surface of the large-diameter end and the small-diameter end, the outer side wall of the mounting cylinder and the stop ring, the inner side wall of the large-diameter end and the outer side wall of the front cover is filled and sealed by sealant injected through the glue groove.

2. The vehicle-mounted camera module as described in claim 1, characterized in that, An internal thread is formed on the inner wall of the small-diameter end of the cover, and an external thread is formed on the outer wall of the outer end of the lens. The cover and the lens are fixed to each other by screwing the internal thread and the external thread in a corresponding manner.

3. The vehicle-mounted camera module as described in claim 1, characterized in that, The outer end of the lens is inserted into the small-diameter end of the cover via an interference fit.

4. The vehicle-mounted camera module as described in claim 1, characterized in that, The sealant fills the space.

5. The vehicle-mounted camera module as described in claim 1 or 4, characterized in that, The dispensing groove is located at the end of the large-diameter end of the cover that is away from the small-diameter end.

6. The vehicle-mounted camera module as described in claim 1 or 4, characterized in that, Both the AA adhesive and the sealant are UV adhesives.

7. The vehicle-mounted camera module as described in claim 1, characterized in that, The mounting cylinder is cylindrical, and the inner end of the lens is cylindrical with an outer diameter smaller than the inner diameter of the mounting cylinder.

8. The vehicle-mounted camera module as described in claim 1, characterized in that, The vehicle camera module also includes a rear cover that docks with the front cover to form a storage cavity. A circuit board is assembled inside the storage cavity, and a photosensitive chip is provided on the circuit board that faces the lens inserted into the mounting cylinder and is located at the focal point of the lens.

9. The vehicle-mounted camera module as described in claim 8, characterized in that, The rear cover and the front cover are welded together using a laser welding process.

10. The vehicle-mounted camera module as described in claim 1, characterized in that, The outer surface of the cover is provided with several tool clamping positions.

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