A vehicle-mounted camera

By splitting the integrated lens of the vehicle camera into three parts—the lens, the front housing, and the locking ring—and using a threaded structure and sealed connection, the high cost and maintenance difficulties of existing technologies are solved, resulting in cost reduction and improved imaging stability.

CN224947626UActive Publication Date: 2026-11-06HUIZHOU XINHUA OPTICAL TECH CO LTD
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Patent Information

Application Number
CN202522221716.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-21
Publication Date
2026-11-06
Estimated Expiration
2035-10-21

AI Technical Summary

Technical Problem

The integrated lens of existing vehicle cameras has high manufacturing costs, cannot meet the needs of different markets, and has high maintenance and replacement costs.

Method used

The integrated lens is disassembled into three parts: lens, front housing, and locking ring. The outer wall of the lens has a threaded structure and a limiting platform. The locking ring is threaded and fixed to the lens. The front housing and locking ring are fixed to the lens from above and below. The lens and the lens mounting hole are fitted with a small gap to limit radial wobble. The lens and the front housing are sealed and connected by a sealing ring and a rubber ring.

Benefits of technology

It reduces processing costs, supports single-component replacement, simplifies assembly processes, improves production efficiency, ensures imaging stability and sealing, and adapts to different market demands.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of vehicle monitoring technology and discloses a vehicle camera, including: a lens, a front housing, and a locking ring. The front housing has a lens mounting hole. The outer wall of the lens has a first threaded structure and a first limiting platform. The first limiting platform is located above the first threaded structure along the axial direction of the lens. The inner wall of the locking ring has a second threaded structure that matches the first threaded structure. The bottom of the lens passes through the lens mounting hole from the upper surface of the front housing. The first limiting platform abuts against the upper surface of the front housing. The locking ring is fitted onto the lens from the bottom and locked in place by the lens's threads. After being locked to the lens, the locking ring abuts against the lower surface of the front housing. This utility model solves the problems of high processing and replacement costs for integrated lenses by disassembling the integrated lens into three parts: the lens, the front housing, and the locking ring. These three parts can be independently processed and replaced, thus meeting different market demands.
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Description

Technical Field

[0001] This utility model belongs to the field of vehicle monitoring technology, and specifically relates to a vehicle camera. Background Technology

[0002] In the field of automotive cameras, existing camera modules generally adopt a design that integrates the front housing and lens into a single unit, forming an integrated lens. The imaging chip PCB is then mounted onto the integrated lens using an AA (assembly, annealing, and mounting) process, and finally the rear housing is assembled to form a complete module. This integrated lens design was widely used for a period of time, offering advantages in ensuring the lens's optical performance, such as better control over the relative positions of the internal lens elements, thereby guaranteeing image quality.

[0003] Furthermore, the integrated lens design offers advantages in manufacturing processes and quality control. Since the lens and front housing are a single unit, assembly steps can be reduced during production, mitigating the risk of optical performance degradation due to assembly errors. Simultaneously, for manufacturers, quality inspection and control of integrated lenses are more centralized and convenient, better ensuring product consistency and stability.

[0004] However, the manufacturing cost of integrated lenses remains high, primarily due to the high processing costs. The processing of integrated lenses often requires high-precision equipment and complex processes, significantly increasing equipment investment, labor costs, and time costs. This high cost limits the further promotion and application of automotive cameras in the market, especially for cost-sensitive automakers or application scenarios, where the high camera cost may affect the overall product pricing and market competitiveness.

[0005] In today's increasingly competitive automotive industry, cost control is a key focus for major automakers. As a crucial component of automobiles, reducing the cost of automotive cameras is vital for enhancing the overall market competitiveness of a vehicle. The high cost of existing integrated lenses limits the application of automotive cameras in many models, especially for price-sensitive mid-to-low-end vehicles. Therefore, the industry urgently needs a new camera structure that can significantly reduce manufacturing costs while maintaining performance, thus meeting the needs of different market segments. Utility Model Content

[0006] This invention addresses the problems of high processing costs, inability to meet diverse market demands, and high maintenance and replacement costs associated with integrated lenses in existing vehicle-mounted cameras, by providing a new type of vehicle-mounted camera.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: According to one objective of this utility model, a vehicle-mounted camera is provided, comprising: a lens, a front housing, and a locking ring. A lens mounting hole penetrating the front housing is provided along the thickness direction of the front housing. A first threaded structure and a first limiting platform are provided on the outer wall of the lens along the radial direction of the lens. The first limiting platform is located above the first threaded structure along the axial direction of the lens. A second threaded structure matching the first threaded structure is provided on the inner wall of the locking ring. The bottom of the lens passes through the lens mounting hole from the upper surface of the front housing and extends out of the lower surface of the front housing. The first limiting platform abuts against the upper surface of the front housing. The locking ring is fitted onto the lens from the bottom of the lens and is locked and fixed to the first threaded structure of the lens by the second threaded structure. After being locked to the lens, the locking ring abuts against the lower surface of the front housing.

[0008] In some alternative implementations, the front housing protrudes a second limiting platform around the lens mounting hole toward the head of the lens, and the first limiting platform abuts against the second limiting platform.

[0009] In some alternative implementations, a sealing ring is also included, which is fitted onto the lens from the bottom and abuts against the first limiting platform, the first limiting platform being sealed to the upper surface of the front housing via the sealing ring.

[0010] In some alternative implementations, the first limiting platform has a limiting groove on the opposite side of the front shell that surrounds the lens mounting hole, and the sealing ring is embedded in the limiting groove.

[0011] In some optional implementations, a first adhesive ring is also included. A first adhesive groove is provided around the outer wall of the first limiting platform opposite to the front shell. The first adhesive ring is embedded in the first adhesive groove, and the front shell is sealed to the lens through the first adhesive ring.

[0012] In some alternative implementations, a second adhesive ring is also included, wherein a second adhesive groove is provided around the inner wall of the locking ring on the side opposite to the bottom of the lens, the second adhesive ring is embedded in the second adhesive groove, and the locking ring is sealed to the lens through the second adhesive ring.

[0013] In some alternative implementations, an imaging chip PCB is also included, and the lower surface of the front housing is provided with AA adhesive, through which the front housing is fixedly connected to the imaging chip PCB.

[0014] In some alternative implementations, the lower surface of the front housing extends into an adhesive boss toward the bottom of the lens, and the AA adhesive is attached to the adhesive boss.

[0015] In some alternative implementations, a rear shell is also included, which matches the front shell. The bottom surface of the front shell has a groove around its outer wall, and the top surface of the rear shell abuts against the groove. A mounting cavity for mounting the lens and the imaging chip PCB is formed between the rear shell and the front shell.

[0016] In some alternative implementations, the locking ring has a slot on the side opposite to the bottom of the lens.

[0017] Compared with the prior art, the beneficial effects of this utility model's technical solution are: This utility model provides a vehicle-mounted camera that assembles an integrated lens into three parts: a lens, a front housing, and a locking ring. These three parts can be processed independently. The lens only requires machining the optical lens, the first threaded structure on the outer wall, and the first limiting platform, without needing to consider the front housing structure, thus reducing machining steps. The front housing only requires machining the lens mounting hole and the flat surface, further reducing machining steps. The locking ring is a standard annular part, and the second threaded structure on the inner wall can be batch rolled, improving processing efficiency and reducing the overall manufacturing cost of the vehicle-mounted camera. This allows the vehicle-mounted camera of this utility model to meet the cost requirements of low-to-mid-range vehicle models, solving the problem of high processing costs for integrated lenses, and satisfying different market demands.

[0018] The first limiting platform of the lens abuts against the upper surface of the front housing, and the locking ring locks the lens and abuts against the lower surface of the front housing, so that the lens and the front housing are fixed vertically, optimizing the axial displacement of the lens and preventing the lens from moving up and down; the lens and the lens mounting hole are fitted with a small gap, and the locking ring is locked with the thread of the lens, thereby limiting the radial wobble of the lens, ensuring the coaxiality of the lens optical axis with the center of the front housing, and avoiding image shift and resolution reduction.

[0019] The integrated lens is disassembled into three parts: the lens, the front housing, and the locking ring. This allows for the replacement of individual parts. If the lens's optical performance fails, only the locking ring needs to be removed to replace the lens; if the front housing is damaged, only the front housing needs to be replaced, reducing maintenance costs. At the same time, it simplifies the assembly process and improves the assembly efficiency of the production line.

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical solution of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0021] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the structure of a vehicle-mounted camera provided in an embodiment of this utility model; Figure 2 for Figure 1 Sectional view of plane AA; Figure 3 An exploded view of a vehicle-mounted camera provided for an embodiment of this utility model; Figure 4 This is a schematic diagram of an explosion from another angle for an embodiment of the present invention; Figure 5 This is a schematic diagram of the locking ring structure of a vehicle-mounted camera provided in an embodiment of the present invention.

[0022] in, 10. Lens; 11. First thread structure; 12. First limit station; 13. Limiting groove; 14. First glue groove; 20. Front shell; 21. Lens mounting hole; 22. Second limit station; 23. Adhesive boss; 24. Groove; 30. Locking ring; 31. Second thread structure; 32. Second glue groove; 33. Card slot; 40. Sealing ring; 50. First rubber ring; 60. Second rubber ring; 70. Imaging chip PCB; 80. AA adhesive; 90. Rear shell.

[0023] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0024] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of this utility model can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the spirit of this utility model and should not be regarded as an improper limitation of this utility model.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the specific technical solutions of this utility model will be further described in detail below with reference to the accompanying drawings of the embodiments of this utility model. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0026] In the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] Furthermore, in this embodiment of the utility model, directional terms such as "left" and "right" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0028] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0029] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0030] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0031] Example 1 This utility model embodiment overcomes the problems of high processing cost, inability to meet different needs, and high maintenance and replacement cost of the integrated lens of the vehicle camera in the prior art, and provides a vehicle camera.

[0032] This utility model provides a vehicle-mounted camera, such as... Figures 1-4 As shown, the device includes a lens 10, a front housing 20, and a locking ring 30. A lens mounting hole 21 is provided on the front housing 20 along the thickness direction of the front housing 20. A first threaded structure 11 and a first limiting platform 12 are provided on the outer wall of the lens 10 along the radial direction of the lens 10. The first limiting platform 12 is located above the first threaded structure 11 along the axial direction of the lens 10. The inner wall of the locking ring 30 is provided with a second threaded structure 31 that matches the first threaded structure 11. The bottom of the lens 10 passes through the lens mounting hole 21 from the upper surface of the front housing 20 and extends out of the lower surface of the front housing 20. The first limiting platform 12 abuts against the upper surface of the front housing 20. The locking ring 30 is fitted onto the lens 10 from the bottom of the lens 10 and is locked and fixed to the first threaded structure 11 of the lens 10 by the second threaded structure 31. After being locked with the lens 10, the locking ring 30 abuts against the lower surface of the front housing 20.

[0033] In this embodiment, the locking ring 30 is ring-shaped, and the inner diameter of the locking ring 30 matches the outer diameter of the lens 10.

[0034] This embodiment disassembles a traditional integrated lens into three parts: lens 10, front housing 20, and locking ring 30. By setting a first threaded structure 11 and a first limiting platform 12 on the outer wall of lens 10, during assembly, the bottom of lens 10 passes through the lens mounting hole 21 from the upper surface of front housing 20. The first limiting platform 12 abuts against the upper surface of front housing 20, while the locking ring 30 is threadedly locked to the bottom of lens 10. After being fixed, the locking ring 30 abuts against the lower surface of front housing 20, so that the lens 10 and front housing 20 form an axial fixation with downward pushing and upward pressing, which optimizes the axial displacement of lens 10. The lens 10 and the lens mounting hole 21 are axially matched, and the locking ring 30 is threadedly locked to lens 10, thereby limiting the radial wobble of lens 10, ensuring the coaxiality of the lens optical axis with the center of front housing 20, and avoiding image shift and resolution reduction.

[0035] Therefore, the vehicle-mounted camera provided in this embodiment assembles the integrated lens into three parts: lens 10, front housing 20, and locking ring 30. These three parts can be processed independently. Lens 10 only requires processing of the optical lens and the first threaded structure 11 and the first limiting platform 12 on the outer wall, without needing to consider the structure of the front housing 20, thus reducing processing steps. The front housing 20 only requires processing of the lens mounting hole 21 and the flat surface, further reducing processing steps. The locking ring 30 is a standard annular part, and the second threaded structure 31 on the inner wall can be batch rolled, improving processing efficiency and reducing the overall processing cost of the vehicle-mounted camera. This allows the vehicle-mounted camera of this embodiment to meet the cost requirements of low-to-mid-range vehicle models, solving the problem of high processing costs for integrated lenses, and satisfying different market demands.

[0036] The integrated lens is disassembled into three parts: lens 10, front housing 20, and locking ring 30. This allows for the replacement of individual parts. If the optical performance of lens 10 fails, only the locking ring 30 needs to be removed to replace lens 10. If the front housing 20 is damaged, only the front housing 20 needs to be replaced, which reduces maintenance costs. At the same time, it simplifies the assembly process and improves the assembly efficiency of the production line.

[0037] This embodiment is a preferred embodiment, and the assembly structure between the lens 10 and the front shell 20 has been optimized.

[0038] In this embodiment, the front shell 20 protrudes a second limiting platform 22 around the lens mounting hole 21 toward the head of the lens 10, and the first limiting platform 12 abuts against the second limiting platform 22.

[0039] By protruding the front shell 20 and cooperating with the first limiting platform 12 to form a second limiting platform 22, the rotation and radial movement of the lens 10 are further restricted, avoiding the problem of slight rotation or displacement of the lens due to vehicle vibration, thus making the image more stable.

[0040] This embodiment is a preferred embodiment, and the sealing structure between the lens 10 and the front shell 20 has been optimized.

[0041] In this embodiment, the vehicle-mounted camera also includes a sealing ring 40, which is fitted onto the lens 10 from the bottom and abuts against the first limiting platform 12. The first limiting platform 12 is sealed to the upper surface of the front shell 20 through the sealing ring 40.

[0042] Specifically, the first limiting platform 12 is sealed to the second limiting platform 22 of the front shell 20 through the sealing ring 40.

[0043] In this embodiment, since the integrated lens has no seams and naturally possesses good waterproofing, gaps can easily form at the mating surfaces of the lens 10 and the front housing 20 after disassembly, potentially causing a short circuit in the internal imaging chip PCB 70. Therefore, the elastic compression of the sealing ring 40 completely fills the gaps at the mating surfaces of the lens 10 and the front housing 20, improving the waterproofing level. This allows the vehicle-mounted camera of this embodiment to meet the requirements for use in humid environments such as rainy days and car washes, preventing vehicle-mounted camera failure due to water ingress.

[0044] In addition, the vehicle environment is subject to continuous vibration, and the contact between the lens 10 and the front housing 20 after disassembly can easily lead to collision and wear. The sealing ring 40 is made of rubber and has elastic cushioning capabilities, which can absorb a large amount of vibration energy, reduce the rigid impact between the lens 10 and the front housing 20, and extend the service life of the components.

[0045] This embodiment is a preferred embodiment, and the assembly position of the sealing ring 40 is defined.

[0046] In this embodiment, the first limiting platform 12 has a limiting groove 13 on the opposite side of the front shell 20, which surrounds the lens mounting hole 21, and the sealing ring 40 is embedded in the limiting groove 13.

[0047] The sealing ring 40 is embedded in the limiting groove 13, which realizes the positioning of the sealing ring 40 and ensures that the assembly position of the sealing ring 40 is fixed.

[0048] Furthermore, the limiting groove 13 ensures that the sealing ring 40 is subjected to uniform force, and the compression amount is the same in each place.

[0049] This embodiment is a preferred embodiment, and the sealing structure between the front shell 20 and the lens 10 has been further optimized.

[0050] In this embodiment, a first adhesive ring 50 is also included. A first adhesive groove 14 is provided around the outer wall of the opposite side of the first limiting platform 12 and the front shell 20. The first adhesive ring 50 is embedded in the first adhesive groove 14, and the front shell 20 is sealed to the lens 10 through the first adhesive ring 50.

[0051] This embodiment can be understood as follows: A first adhesive groove 14 is provided around the outer wall of the surface opposite to the front housing 20 on the first limiting platform 12. After the front housing 20 and the lens 10 are locked and fixed by the locking ring 30, adhesive is applied in the annular groove formed between the first adhesive groove 14 and the upper surface of the second limiting platform 22, and cured to form a first adhesive ring 50, thus forming a rigid sealing layer between the front housing 20 and the lens 10. This rigid sealing layer can resist high-pressure water impact and chemical corrosion. Combined with the aforementioned sealing connection between the front housing 20 and the lens 10 through the sealing ring 40, a double sealing effect is achieved. The double sealing improves the service life of the vehicle camera in harsh environments.

[0052] This embodiment is a preferred embodiment, and the assembly sealing between the locking ring 30 and the lens 10 has been optimized.

[0053] In this embodiment, as Figure 2 and Figure 5 As shown, the vehicle-mounted camera also includes a second rubber ring 60. A second adhesive groove 32 is provided around the inner wall of the locking ring 30 on the side opposite to the bottom of the lens 10. The second rubber ring 60 is embedded in the second adhesive groove 32, and the locking ring 30 is sealed to the lens 10 through the second rubber ring 60.

[0054] This embodiment can be understood as follows: a second adhesive groove 32 is provided around the inner wall of the locking ring 30 on the side opposite to the bottom of the lens 10. After the locking ring 30 and the lens 10 are threadedly locked, adhesive is applied in the annular groove formed between the second adhesive groove 32 and the outer wall of the lens 10, and cured to form a second adhesive ring 60, so that a rigid sealing layer is formed between the locking ring 30 and the lens 10.

[0055] In this embodiment, after the second adhesive ring 60 is embedded in the second adhesive groove 32, it can fill the gap between the locking ring 30 and the threaded mating surface of the lens 10, forming a full-coverage seal at the top and bottom, completely preventing moisture from entering from the bottom of the locking ring 30 and protecting the internal optical lens of the lens 10.

[0056] In addition, vehicle vibration may cause the threaded connection between the locking ring 30 and the lens 10 to loosen. After the second rubber ring 60 is cured, it can fill the thread gap, increase the friction between the threads, reduce the loosening rate, and ensure that the locking ring 30 is locked for a long time and always presses against the front shell 20, avoiding back focus changes caused by axial displacement of the lens 10.

[0057] In addition, in this embodiment, the locking ring 30 has a slot 33 on the side opposite to the bottom of the lens 10.

[0058] The slot 33 can be set to two or four, and the two or four slots 33 are symmetrically distributed around the locking ring 30.

[0059] The slot 33 allows the tool to firmly hold the locking ring 30, providing more stable force and making it easy to tighten to the specified tightness, preventing the lens 10 from becoming loose due to insufficient tightening. Furthermore, when removing the locking ring 30 for maintenance, the tool can be quickly locked and unscrewed using the slot 33, saving maintenance time.

[0060] This embodiment, as a preferred embodiment, optimizes the structure of the vehicle-mounted camera.

[0061] The vehicle camera provided in this embodiment also includes an imaging chip PCB 70 and a rear shell 90. The lower surface of the front shell 20 is provided with AA adhesive 80, and the front shell 20 is fixedly connected to the imaging chip PCB 70 through the AA adhesive 80.

[0062] The rear shell 90 matches the front shell 20. The bottom surface of the front shell 20 is provided with a groove 24 around the outer wall of the front shell 20. The top surface of the rear shell 90 abuts against the groove 24. A mounting cavity for mounting the lens 10 and the imaging chip PCB 70 is formed between the rear shell 90 and the front shell 20.

[0063] In this embodiment, the vehicle-mounted camera needs to ensure that the optical axis of the lens 10 is aligned with the photosensitive center of the imaging chip. The AA adhesive 80, in conjunction with the active alignment process, can monitor the image quality in real time and adjust the position of the lens 10, thereby improving the alignment accuracy between the optical axis of the lens 10 and the photosensitive center of the imaging chip. This ensures that the photosensitive surface of the imaging chip fully receives the light signal projected by the lens 10, avoiding edge imaging blurring caused by alignment deviation.

[0064] AA Adhesive 80 uses a low-shrinkage material and matches the thermal expansion coefficient of the front shell 20 and the imaging chip PCB 70, optimizing the amount of back focus change after environmental changes and ensuring clear imaging of the vehicle camera in the entire temperature range.

[0065] The rear cover 90 and the front cover 20 form a mounting cavity for mounting the lens 10 and the imaging chip PCB 70. The groove 26 ensures the alignment accuracy between the rear cover 90 and the front cover 20, and avoids damage to the imaging chip PCB 70 due to pressure caused by the offset of the rear cover 90.

[0066] In this preferred embodiment, an adhesive protrusion 23 extends from the lower surface of the front housing 20 toward the bottom of the lens 10, and AA adhesive 80 is attached to the adhesive protrusion 23.

[0067] In this embodiment, by setting the adhesive protrusion 23, the AA adhesive 80 is concentrated in a small area, so that the AA adhesive 80 will not flow around and the bonding position of the AA adhesive 80 is guaranteed.

[0068] Furthermore, the adhesive protrusions 23 provide thickness to the AA adhesive 80, ensuring the adhesion between the AA adhesive 80 and the imaging chip PCB 70.

[0069] The sequence numbers of the above-described embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of the present invention, provided only to clearly illustrate the present invention, and are not intended to limit the patent scope of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description; it is neither necessary nor possible to exhaustively describe all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A vehicle-mounted camera, characterized in that, include: The lens (10), front housing (20), and locking ring (30) are provided. A lens mounting hole (21) is provided on the front housing (20) along the thickness direction of the front housing (20). A first thread structure (11) and a first limiting platform (12) are provided on the outer wall of the lens (10) along the radial direction of the lens (10). The first limiting platform (12) is located above the first thread structure (11) along the axial direction of the lens (10). The inner wall of the locking ring (30) is provided with a second thread structure that matches the first thread structure (11). (31) The bottom of the lens (10) passes through the lens mounting hole (21) from the upper surface of the front shell (20) and extends out of the lower surface of the front shell (20). The first limiting platform (12) abuts against the upper surface of the front shell (20). The locking ring (30) is fitted onto the lens (10) from the bottom of the lens (10) and is locked and fixed to the first thread structure (11) of the lens (10) through the second thread structure (31). After being locked with the lens (10), the locking ring (30) abuts against the lower surface of the front shell (20).

2. The vehicle-mounted camera according to claim 1, characterized in that, The front shell (20) protrudes a second limiting platform (22) around the lens mounting hole (21) toward the head of the lens (10), and the first limiting platform (12) abuts against the second limiting platform (22).

3. A vehicle-mounted camera according to claim 1, characterized in that, It also includes a sealing ring (40), which is fitted onto the lens (10) from the bottom and abuts against the first limiting platform (12). The first limiting platform (12) is sealed to the upper surface of the front shell (20) through the sealing ring (40).

4. A vehicle-mounted camera according to claim 3, characterized in that, The first limiting platform (12) has a limiting groove (13) on the opposite side of the front shell (20) surrounding the lens mounting hole (21), and the sealing ring (40) is embedded in the limiting groove (13).

5. A vehicle-mounted camera according to claim 1, characterized in that, It also includes a first rubber ring (50), and a first adhesive groove (14) is provided around the outer wall of the first limiting platform (12) opposite to the front shell (20). The first rubber ring (50) is embedded in the first adhesive groove (14), and the front shell (20) is sealed to the lens (10) through the first rubber ring (50).

6. A vehicle-mounted camera according to claim 1, characterized in that, It also includes a second rubber ring (60). A second adhesive groove (32) is provided around the inner wall of the locking ring (30) on the side opposite to the bottom of the lens (10). The second rubber ring (60) is embedded in the second adhesive groove (32). The locking ring (30) is sealed to the lens (10) through the second rubber ring (60).

7. A vehicle-mounted camera according to claim 1, characterized in that, It also includes an imaging chip PCB (70), and the lower surface of the front shell (20) is provided with AA adhesive (80), and the front shell (20) is fixedly connected to the imaging chip PCB (70) through the AA adhesive (80).

8. A vehicle-mounted camera according to claim 7, characterized in that, An adhesive boss (23) extends from the lower surface of the front housing (20) toward the bottom of the lens (10), and the AA adhesive (80) is attached to the adhesive boss (23).

9. A vehicle-mounted camera according to claim 7, characterized in that, It also includes a rear shell (90), which matches the front shell (20). The bottom surface of the front shell (20) is provided with a groove (24) around the outer wall of the front shell (20). The top surface of the rear shell (90) abuts against the groove (24). A mounting cavity for mounting the lens (10) and the imaging chip PCB (70) is formed between the rear shell (90) and the front shell (20).

10. A vehicle-mounted camera according to claim 1, characterized in that, The locking ring (30) has a slot (33) on the opposite side of the bottom of the lens (10).