Vehicle-mounted waterproof camera

Abstract

The utility model relates to the technical field of cameras, in particular to a vehicle-mounted waterproof camera, which comprises a lens, a front cover, a lens support, a PCBA (printed circuit board assembly) board, a rear cover and a mounting support, the lens is connected with the lens support and partially penetrates through the front cover, a first accommodating cavity used for placing the lens support and the PCBA board is arranged in the rear cover, the rear cover is connected with the front cover, and the mounting support is connected with the front cover. The lens support is connected with the rear cover, the PCBA board is arranged between the lens support and the rear cover, the rear cover is arranged in the mounting support, a first sealing ring is arranged between the lens and the front cover, a first waterproof structure is arranged between the front cover and the rear cover, and a second waterproof structure is arranged between the rear cover and the mounting support. According to the utility model, a multi-group waterproof design is adopted, the risk that water enters from each part of the camera is eliminated, and the overall protection level of the camera is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, and more specifically, to a vehicle-mounted waterproof camera. Background Art

[0002] Car cameras are a crucial component in modern vehicles, providing video evidence to assist with traffic accident handling and helping drivers observe the vehicle's surroundings. However, cameras mounted on the rear or around the vehicle's body are susceptible to moisture intrusion in rainy or foggy conditions due to increased humidity, shortening their service life. Therefore, car cameras must meet high requirements for water and dust resistance, and must meet IP67 protection levels.

[0003] In the prior art, for example, Chinese patent CN210491021U discloses a waterproof high-definition camera, which is composed of a lens mount, a lens, a front cover, a back cover, a hollow threaded part, a PCB board, wires, a sealing ring, and glue. By designing two sealing rings at the connection between the hollow threaded part and the back cover, at the connection between the lens mount and the back cover, and at the connection between the lens mount and the lens, various parts of the camera housing are sealed to achieve waterproofing. However, there is still a risk of water ingress from the connection between the lens and the front cover, and the overall protection level cannot meet the IP67 requirements. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art that there is a risk of water entering from the connection between the lens and the front cover, and the overall protection level cannot meet the IP67 requirements. It provides a car-mounted waterproof camera, eliminates the risk of water entering from various parts of the camera, and improves the overall protection level of the camera.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A vehicle-mounted waterproof camera is provided, comprising a lens, a front cover, a lens holder, a PCBA board, a back cover, and a mounting bracket. The lens is connected to the lens holder and partially passes through the front cover. A first accommodating cavity for accommodating the lens holder and the PCBA board is provided in the back cover. The back cover is connected to the front cover, the lens holder is connected to the back cover, the PCBA board is arranged between the lens holder and the back cover, and the back cover is arranged inside the mounting bracket. A first sealing ring is provided between the lens and the front cover, a first waterproof structure is provided between the front cover and the back cover, and a second waterproof structure is provided between the back cover and the mounting bracket.

[0007] The utility model relates to a vehicle-mounted waterproof camera. The lens passes through a front cover and is connected to a lens holder. The front cover covers the connection between the lens and the lens holder and is connected to a rear cover. A first accommodating cavity is provided between the rear cover and the front cover. The lens holder is disposed within the first accommodating cavity and is connected to the rear cover. The PCBA board is fixed between the lens holder and the rear cover. One end of the rear cover is connected to the front cover and the entire body is fixed within a mounting bracket. To improve the overall waterproof performance of the vehicle-mounted camera and eliminate the risk of water ingress from various parts of the camera, a first sealing ring is provided between the lens and the front cover to prevent water droplets from flowing into the camera through the gap at the connection between the lens and the front cover; a first waterproof structure is provided between the front cover and the rear cover to prevent water droplets from seeping into the camera through the connection between the front cover and the rear cover; and a second waterproof structure is provided between the rear cover and the mounting bracket to prevent water droplets from flowing into the vehicle-mounted camera through the mounting structure inside the vehicle body and thus affecting the service life of the vehicle-mounted camera. The multiple waterproof structure designs cooperate with each other to further improve the waterproof and dustproof capabilities of the vehicle-mounted camera, meeting the IP67 protection level requirements.

[0008] Furthermore, the first sealing ring includes a fixed portion and a sealing portion that are interconnected. The fixed portion is connected to the front cover, and the sealing portion has a larger diameter than the fixed portion. The sealing portion is positioned between the front cover and the lens. The fixed portion is connected to the front cover to secure the entire position of the first sealing ring. The sealing portion has a larger diameter than the fixed portion and is clamped between the lens and the front cover, thereby improving the waterproof performance of the connection between the lens and the front cover.

[0009] Furthermore, the first waterproof structure is a second sealing ring. The rear cover is provided with a groove, and the second sealing ring is disposed between the groove and the front cover. The rear cover is provided with a groove for accommodating the second sealing ring. The second sealing ring disposed between the groove and the front cover can prevent water droplets from flowing into the camera through the gap at the connection between the front and rear covers.

[0010] Furthermore, the second waterproof structure is a waterproof sponge. A second accommodating cavity is provided between the mounting bracket and the back cover, and the waterproof sponge is disposed within the second accommodating cavity. The waterproof sponge is installed within the second accommodating cavity between the back cover and the mounting bracket, and its water absorption properties absorb and isolate moisture, preventing water droplets from seeping into the camera.

[0011] Furthermore, a waterproof pad is provided between the lens holder and the PCBA board, which can not only fix the position between the lens holder and the PCBA board, but also improve the sealing and waterproof performance inside the camera.

[0012] Furthermore, the system includes a wiring harness module connected to the rear cover. The wiring harness module includes a connector, a connector housing, and a wiring harness. The connector housing is mounted on the connector, and the wiring harness is connected to the connector. The wiring harness is connected to the rear cover via the connector to enable signal transmission between the PCBA board and the host. The connector housing is mounted on the connector to protect the connector structure during use.

[0013] Furthermore, a third sealing ring is provided between the connector housing and the back cover, which is used to prevent water droplets from seeping into the gap between the connector housing and the back cover, thereby improving the overall waterproof performance of the camera.

[0014] Furthermore, a room temperature curing glue is provided between the wiring harness and the connector. The room temperature curing glue is provided at the connection between the wiring harness and the connector using a dispensing process to prevent water from entering the camera through the gap between the wiring harness and the connection.

[0015] Furthermore, the PCBA is equipped with a DC converter, an image sensor chip, an image signal processor, a video driver, a ground interface, and an analog video signal interface. The DC converter is electrically connected to the image sensor chip, the image sensor chip is signal-connected to the image signal processor, the image signal processor is signal-connected to the video driver, the analog video signal interface is connected to the video driver, and the ground interface is connected to the image sensor chip. The image sensor chip is connected to the DC converter for converting input voltage to the image sensor chip's operating voltage. The image sensor chip converts received light through its photosensitive surface into an electrical signal, which is then transmitted to the image signal processor for processing into a digital signal and digital image. The image signal processor is connected to the video driver, transmitting the processed digital image to the video driver. The video driver is connected to the host computer via the analog video signal interface. The ground interface provides a reference potential and safety protection to ensure circuit stability.

[0016] Furthermore, the PCBA is equipped with a flash memory chip, a reset chip, and a surface mount crystal oscillator. The reset chip and the surface mount crystal oscillator are both connected to the image sensor chip, and the flash memory chip is connected to the DC converter and the image sensor chip. Data in the flash memory chip is not lost after a power outage. The reset chip is used to reset the pixel units, which can improve the dynamic range and signal-to-noise ratio of the image sensor and enhance its anti-saturation capability. The image sensor chip is also connected to a surface mount crystal oscillator to provide a stable clock signal.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Improve the overall waterproof performance of the car camera, eliminate the risk of water entering from all parts of the camera, and improve the overall protection level of the camera;

[0019] 2. Ensure that the images and videos captured by the vehicle-mounted camera can be stably transmitted, saved and recorded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the vehicle-mounted camera;

[0021] Figure 2 for Figure 1 Partial structural cross-sectional view at the AA position;

[0022] Figure 3 This is the structural explosion diagram of the vehicle-mounted camera;

[0023] Figure 4 This is the internal system diagram of the PCBA board;

[0024] In the accompanying drawings: 100, lens; 200, front cover; 300, lens bracket; 400, PCBA board; 500, back cover; 510, first accommodating cavity; 520, groove; 600, wiring harness module; 610, connector; 620, connector housing; 700, mounting bracket; 710, second accommodating cavity; 810, first sealing ring; 811, fixing part; 812, sealing part; 820, second sealing ring; 830, waterproof sponge; 840, waterproof pad; 850, third sealing ring; 900, screw. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, 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 from the drawings.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Example 1

[0028] This embodiment is the first embodiment of a vehicle-mounted camera, including a lens 100, a front cover 200, a lens holder 300, a PCBA board 400, a back cover 500 and a mounting bracket 700. The lens 100 is connected to the lens holder 300, and the lens 100 partially passes through the front cover 200. The back cover 500 is provided with a first accommodating cavity 510 for placing the lens holder 300 and the PCBA board 400. The back cover 500 is connected to the front cover 200, and the lens holder 300 is connected to the back cover 500. The PCBA board 400 is arranged between the lens holder 300 and the back cover 500. The back cover 500 is arranged inside the mounting bracket 700. A first sealing ring 810 is provided between the lens 100 and the front cover 200, a first waterproof structure is provided between the front cover 200 and the back cover 500, and a second waterproof structure is provided between the back cover 500 and the mounting bracket 700.

[0029] In the vehicle-mounted camera of this embodiment, the lens 100 and the lens bracket 300 are fixedly connected by screw threads. Figure 1 As shown, the front cover 200 is arranged between the lens 100 and the lens bracket 300, and covers the connection between the lens 100 and the lens bracket 300 and the lens bracket 300; the front cover 200 and the back cover 500 are fixedly connected by screws 900; the lens bracket 300 and the front cover 200 are fixed by buckles, and the lens bracket 300 and the back cover 500 are fixedly connected by screws 900. The PCBA board 400 is arranged between the lens bracket 300 and the back cover 500 and is provided with a through hole. The screws 900 pass through the through hole to fix the lens bracket 300 and the PCBA board 400 to the back cover 500, and finally the back cover 500 is fixed to the mounting bracket 700 by the screws 900, completing the overall position fixation of the vehicle-mounted camera. A first sealing ring 810 is provided between the lens 100 and the front cover 200 to prevent water droplets from flowing into the interior of the camera through the gap at the connection between the lens 100 and the front cover 200; a first waterproof structure is provided between the front cover 200 and the rear cover 500 to prevent water droplets from penetrating from the connection between the front cover 200 and the rear cover 500, causing water to enter the interior of the camera; a second waterproof structure is provided between the rear cover 500 and the mounting bracket 700 to prevent water droplets from flowing into the vehicle-mounted camera from the mounting structure inside the vehicle body, thereby affecting the service life of the vehicle-mounted camera. Multiple sets of waterproof structure designs cooperate with each other to further improve the waterproof and dustproof capabilities of the vehicle-mounted camera, meeting the protection level requirements of IP67.

[0030] The first sealing ring 810 includes a fixing portion 811 and a sealing portion 812 connected to each other. The fixing portion 811 is connected to the front cover 200. The diameter of the sealing portion 812 is larger than that of the fixing portion 811. The sealing portion 812 is located between the front cover 200 and the lens 100. The material of the first sealing ring 810 can be selected from rubber with a hardness in the range of 50-70A and a compression ratio of about 20% to 30%, which can provide an excellent sealing effect. Figure 3 As shown, the first sealing ring 810 in this embodiment includes a fixing portion 811 and a sealing portion 812. The surface of the fixing portion 811 is threaded, which is convenient for fixing on the front cover 200; the sealing portion 812 extends outward from the fixing portion 811 and has a diameter larger than the fixing portion 811. The sealing portion 812 is squeezed between the front cover 200 and the lens 100 to prevent water droplets from seeping into the gap at the connection between the lens 100 and the front cover 200.

[0031] The first waterproof structure is a second sealing ring 820. The rear cover 500 has a groove 520, and the second sealing ring 820 is positioned between the groove 520 and the front cover 200. The shape of the second sealing ring 820 matches the shape of the groove 520 on the rear cover 500. The interior of the second sealing ring 820 accommodates the lens holder 300 and is constructed of rubber to prevent water from entering the connection between the front cover 200 and the rear cover 500.

[0032] The second waterproof structure is a waterproof sponge 830. The second accommodating cavity 710 is located between the mounting bracket 700 and the rear cover 500, and the waterproof sponge 830 is disposed within the second accommodating cavity 710. The waterproof sponge 830, mounted within the second accommodating cavity 710 between the rear cover 500 and the mounting bracket 700, uses its water-absorbing properties to absorb and isolate moisture, preventing it from entering the camera through the mounting bracket 700 on the vehicle body.

[0033] A waterproof gasket 840 is installed between the lens bracket 300 and the PCBA board 400. Made of silicone, the gasket 840 has mounting holes for accommodating various protruding structures on the PCBA board 400. Installed between the lens bracket 300 and the PCBA board 400, it seals and waterproofs the camera interior, preventing moisture from flowing between the camera's internal components.

[0034] The working principle of the vehicle camera in this embodiment is as follows: the lens 100 and the lens bracket 300 are fixedly connected by threads, and the front cover 200 is arranged between the lens 100 and the lens bracket 300; the front cover 200 and the rear cover 500 are fixedly connected by screws 900; the lens bracket 300 and the front cover 200 are fixed by snap fasteners, and the lens bracket 300 and the rear cover 500 are fixedly connected by screws 900. The PCBA board 400 is arranged between the lens bracket 300 and the rear cover 500 and is provided with a through hole. The screws 900 pass through the through hole to fix the lens bracket 300 and the PCBA board 400 to the rear cover 500, and finally the rear cover 500 is fixed to the mounting bracket 700 by the screws 900. A first sealing ring 810 is provided between the lens 100 and the front cover 200; a second sealing ring 820 is provided between the front cover 200 and the rear cover 500; a waterproof sponge 830 is provided between the rear cover 500 and the mounting bracket 700; and a waterproof pad 840 is provided between the lens bracket 300 and the PCBA board 400.

[0035] Example 2

[0036] This embodiment is the second embodiment of a vehicle-mounted camera. This embodiment is similar to the first embodiment, differing in that it also includes a wiring harness module 600 connected to the rear cover 500. The wiring harness module 600 comprises a connector 610, a connector housing 620, and a wiring harness. The connector housing 620 fits over the connector 610, and the wiring harness is connected to the connector 610. One end of the connector 610 snaps onto the rear cover 500, and the other end connects to the wiring harness, thereby completing signal transmission between the camera and the host. The connector housing 620 fits over the connector 610, protecting the connector 610 structure during use.

[0037] A third sealing ring 850 is provided between the connector housing 620 and the rear cover 500. Figure 3 As shown, the third sealing ring 850 in this embodiment is an O-type rubber sealing ring, which is arranged between the connector housing 620 and the back cover 500 to prevent water droplets from flowing into the interior of the camera from the connection between the connector housing 620 and the back cover 500.

[0038] A room temperature curing adhesive is provided between the wiring harness and the connector 610. The room temperature curing adhesive is provided between the wiring harness and the connector 610 through a dispensing process to seal the gap between the wiring harness and the connector 610, thereby improving the waterproof level of the camera.

[0039] The working principle of the vehicle-mounted camera in this embodiment is as follows: one end of the connector 610 is snap-connected to the rear cover 500, and the other end is connected to the wiring harness. The connector shell 620 is sleeved on the connector 610. A third sealing ring 850 is provided between the connector shell 620 and the rear cover 500, and room temperature curing glue is provided between the wiring harness and the connector 610.

[0040] Example 3

[0041] This embodiment is the third embodiment of the vehicle-mounted camera. This embodiment is similar to the first embodiment, except that a DC converter, an image sensor chip, an image signal processor, a video driver, a ground interface, and an analog video signal interface are provided on the PCBA board 400. The DC converter is electrically connected to the image sensor chip, the image sensor chip is signal-connected to the image signal processor, the image signal processor is signal-connected to the video driver, the analog video signal interface is connected to the video driver, and the ground interface is connected to the image sensor chip. Figure 4 As shown, the image sensor chip is connected to a DC converter for converting between the input voltage and the image sensor operating voltage. The image sensor chip is connected to the image signal processor via the MIPI-CSI (Mobile Industry Processor Interface-Camera Serial Interface) high-speed transmission interface to achieve high-speed transmission of image and video data. The peripheral interface of the PCBA board 400 includes an analog video signal interface and a ground interface. The analog video signal interface is externally connected to the host, and the ground interface is used to provide a reference potential and safety protection to ensure the stability of the circuit. The video driver is mainly responsible for managing and controlling the camera, converting the captured image into data that can be parsed by the application in real time, and displayed by the application. It usually includes a series of processes such as video capture, encoding, decoding, and display.

[0042] The PCBA board 400 is also provided with a flash memory chip, a reset chip and a surface mount crystal oscillator. The reset chip and the surface mount crystal oscillator are both connected to the image sensor chip, and the flash memory chip is connected to the DC converter and the image sensor chip.

[0043] The flash memory chip in this embodiment is a FLASH flash memory chip, a non-volatile memory that protects data from power failure. The image sensor chip connects to the FLASH flash memory chip via an SPI serial communication interface to temporarily store camera-captured data. The image sensor chip is connected to a reset chip for pixel reset control, which improves the image sensor's dynamic range and signal-to-noise ratio, enhances saturation resistance, reduces reset noise, and eliminates image lag and nonlinearity. The image sensor chip is also connected to a 27MHz surface-mount crystal oscillator to provide a stable clock signal.

[0044] The operating principle of the vehicle-mounted camera in this embodiment is as follows: the image sensor chip converts received light through its photosensitive surface into electrical signals. This electrical signal is then transmitted to the image signal processor, where it is processed into a digital signal and a digital image. The image signal processor connects to the video driver via a DVP (Digital Video Port) interface, which transmits the processed digital image to the video driver. The video driver connects to the host computer via an analog video signal interface, transmitting the images captured by the camera to the host computer for storage and recording.

[0045] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A vehicle-mounted waterproof camera, characterized in that: The invention comprises a lens (100), a front cover (200), a lens bracket (300), a PCBA board (400), a back cover (500) and a mounting bracket (700), wherein the lens (100) is connected to the lens bracket (300) and the lens (100) partially passes through the front cover (200), the back cover (500) is provided with a first accommodating cavity (510) for accommodating the lens bracket (300) and the PCBA board (400), the back cover (500) is connected to the front cover (200), and the The lens bracket (300) is connected to the back cover (500), the PCBA board (400) is arranged between the lens bracket (300) and the back cover (500), the back cover (500) is arranged inside the mounting bracket (700), a first sealing ring (810) is provided between the lens (100) and the front cover (200), a first waterproof structure is provided between the front cover (200) and the back cover (500), and a second waterproof structure is provided between the back cover (500) and the mounting bracket (700).

2. The vehicle-mounted waterproof camera according to claim 1, characterized in that: The first sealing ring (810) includes a fixing portion (811) and a sealing portion (812) that are connected to each other, the fixing portion (811) is connected to the front cover (200), the diameter of the sealing portion (812) is larger than the diameter of the fixing portion (811), and the sealing portion (812) is arranged between the front cover (200) and the lens (100).

3. The vehicle-mounted waterproof camera according to claim 1, characterized in that: The first waterproof structure is a second sealing ring (820), a groove (520) is provided on the rear cover (500), and the second sealing ring (820) is arranged between the groove (520) and the front cover (200).

4. The vehicle-mounted waterproof camera according to claim 1, characterized in that: The second waterproof structure is a waterproof sponge (830), a second accommodating cavity (710) is provided between the mounting bracket (700) and the back cover (500), and the waterproof sponge (830) is arranged in the second accommodating cavity (710).

5. The vehicle-mounted waterproof camera according to claim 1, characterized in that: A waterproof pad (840) is provided between the lens bracket (300) and the PCBA board (400).

6. The vehicle-mounted waterproof camera according to claim 1, characterized in that: It also includes a wiring harness module (600) connected to the rear cover, the wiring harness module (600) includes a connector (610), a connector housing (620) and a wiring harness, the connector housing (620) is sleeved on the connector (610), and the wiring harness is connected to the connector (610).

7. The vehicle-mounted waterproof camera according to claim 6, characterized in that: A third sealing ring (850) is provided between the connector housing (620) and the rear cover (500).

8. The vehicle-mounted waterproof camera according to claim 6, characterized in that: Normal temperature curing glue is provided between the wiring harness and the connector (610).

9. The vehicle-mounted waterproof camera according to any one of claims 1 to 8, characterized in that: The PCBA board (400) is provided with a DC converter, an image sensor chip, an image signal processor, a video driver, a grounding interface, and an analog video signal interface; the DC converter is electrically connected to the image sensor chip; the image sensor chip is signal-connected to the image signal processor; the image signal processor is signal-connected to the video driver; the analog video signal interface is connected to the video driver; and the grounding interface is connected to the image sensor chip.

10. The vehicle-mounted waterproof camera according to claim 9, characterized in that: The PCBA board (400) is also provided with a flash memory chip, a reset chip, and a patch crystal oscillator; the reset chip and the patch crystal oscillator are both connected to the image sensor chip; and the flash memory chip is connected to the DC converter and the image sensor chip.

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