CN114995019A

CN114995019A - Vehicle-mounted camera

Info

Publication number: CN114995019A
Application number: CN202210614940.4A
Authority: CN
Inventors: 罗小平; 谢涌铁
Original assignee: Shenzhen Longhorn Automotive Electronic Equipment Co Ltd
Current assignee: Shenzhen Longhorn Automotive Electronic Equipment Co Ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-09-02

Abstract

The embodiment of the invention provides a vehicle-mounted camera which comprises a shell with a mounting hole at the top end and a lens with the bottom end inserted into the mounting hole, wherein an outer convex ring is formed on the outer side wall of the lens along the radial direction in a protruding mode, a connecting cylinder inserted into the mounting hole and a sealing washer arranged between the outer wall of the connecting cylinder and the hole wall of the mounting hole to fix the connecting cylinder in the mounting hole and seal a gap between the outer wall and the hole wall, limiting bosses which are abutted against the top wall of the shell to limit the insertion depth of the connecting cylinder into the mounting hole are symmetrically and convexly arranged on the outer side wall of the bottom end of the connecting cylinder, the bottom end of the lens is inserted into the connecting cylinder from the top end of the connecting cylinder after extending into the mounting hole, the bottom surface of the outer convex ring is fixedly connected with the end face of the top end of the connecting cylinder, and the parts, which are opposite to the outer side surface of the outer convex ring and the hole wall of the mounting hole, are connected into a whole through a laser welding process. The embodiment can realize stable and sealed connection of the lens and the shell.

Description

Vehicle-mounted camera

Technical Field

The embodiment of the invention relates to the technical field of vehicle-mounted camera equipment, in particular to a vehicle-mounted camera.

Background

An existing vehicle-mounted camera generally includes a housing having a mounting hole at a top end thereof and a lens inserted into the mounting hole at a bottom end thereof. In order to realize the relative fixation of the lens and the shell, an outer convex ring is formed on the outer side wall of the existing lens along the radial direction, one end of the lens is inserted into the mounting hole, a sealing glue is filled in a gap between the outer convex ring and the orifice periphery of the mounting hole, and the lens and the shell are fixedly adhered by the sealing glue.

However, the inventor finds that, in the long-term use process of the vehicle-mounted camera, the sealant is easily subjected to high-pressure water washing or high-temperature solarization to be denatured and fall off, the weather resistance is poor, the connection failure of the lens and the shell is easily caused, the lens has a falling risk, and the stability is relatively poor.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a vehicle-mounted camera, which can realize stable and sealed connection between a lens and a housing.

In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions: a vehicle-mounted camera comprises a shell with a mounting hole at the top end and a lens inserted into the mounting hole at the bottom end, the outer side wall of the lens is provided with an outer convex ring along the radial direction in a protruding manner, the vehicle-mounted camera further comprises a connecting cylinder inserted into the mounting hole and a sealing gasket arranged between the outer wall of the connecting cylinder and the hole wall of the mounting hole so as to fix the connecting cylinder in the mounting hole and seal a gap between the outer wall and the hole wall, the outer side wall of the bottom end of the connecting cylinder is symmetrically convexly provided with limit bosses which are abutted with the top wall of the shell to limit the depth of the connecting cylinder inserted into the mounting hole, the bottom end of the lens extends into the mounting hole and then is inserted into the connecting cylinder from the top end of the connecting cylinder, the bottom surface of the outer convex ring is fixedly connected with the top end face of the connecting cylinder, and the parts of the outer side face of the outer convex ring, which are opposite to the hole wall of the mounting hole, are connected into a whole through a laser welding process.

Furthermore, the bottom surface of the convex ring is sealed and adhered to the end surface of the top end of the connecting cylinder by sealant.

Furthermore, the bottom surface of the outer convex ring and the top end surface of the connecting cylinder are connected into a whole through a laser welding process.

Further, the top surface of the convex ring is flush with the peripheral plane of the top end hole opening of the mounting hole.

Further, the outer wall at connecting cylinder top is equipped with the positioning ring groove, seal ring install in the positioning ring groove and from the notch protrusion of positioning ring groove, insert on the top of connecting cylinder in the mounting hole, by the outer wall of connecting cylinder with the pore wall cooperation extrusion of mounting hole seal ring and make seal ring elastic deformation and press from both sides tight fixedly the connecting cylinder is sealed gap between connecting cylinder outer wall and the mounting hole pore wall.

Further, the vehicle-mounted camera further comprises a PCB and a photosensitive chip, the PCB is fixedly assembled in the shell, the photosensitive chip is assembled in the middle of the PCB, the bottom end of the connecting cylinder is fixed on the PCB, and the photosensitive chip is located on the inner side of the connecting cylinder.

Furthermore, a pre-positioning column is further arranged at a preset position of the bottom end of the connecting cylinder in a protruding mode, a pre-positioning hole is correspondingly formed in the PCB, and the pre-positioning column is inserted into the pre-positioning hole to enable the connecting cylinder to be positioned relative to the PCB.

Furthermore, a first screw hole is formed in the limiting boss, a first through hole is formed in the PCB, and a first screw penetrates through the first through hole from the bottom surface of the PCB and then is screwed in the first screw hole to fix the bottom end of the connecting cylinder on the PCB.

Furthermore, the bottom of casing is equipped with the opening, PCB board and sensitization chip are all certainly the opening is packed into in the casing, still be equipped with the second perforation on the PCB board, correspond on the roof of casing and be equipped with the second screw, in addition by the second screw follow the bottom surface of PCB board passes behind the second perforation the lock solid in the second screw and be fixed in the casing with the PCB board.

Further, the vehicle-mounted camera further comprises a top surface edge and a bottom cover which is connected with the periphery of the opening in an abutting mode through a laser welding process, a plug connector used for being in butt joint with an external connector is further arranged on one side face of the photosensitive chip, which is away from the PCB, and a connecting sleeve which surrounds the plug connector and is used for inserting the external connector is formed in the bottom face of the bottom cover in a protruding mode.

After the technical scheme is adopted, the embodiment of the invention at least has the following beneficial effects: according to the embodiment of the invention, the connecting cylinder is additionally arranged and is arranged between the outer wall of the connecting cylinder and the wall of the mounting hole through the sealing washer, so that on one hand, the connecting cylinder can be fixed in the mounting hole through the sealing washer; on the other hand, realize the sealed of gap between the pore wall to the outer wall of connecting cylinder and mounting hole, further with the bottom surface of the outer bulge loop of camera lens with the top end face fixed connection of connecting cylinder realizes the fixed of camera lens and connecting cylinder, prescribes a limit to the degree of depth that the connecting cylinder inserted the mounting hole through spacing boss moreover, guarantees that the position of outer bulge loop and mounting hole corresponds, convenient with the lateral surface of outer bulge loop with both just right parts of the pore wall of mounting hole pass through laser welding technology and link as an organic whole, and the welding seam leakproofness is good and connect firmly, can realize waterproof dustproof effect well, simultaneously because the gap between the outer wall of connecting cylinder and the pore wall of mounting hole utilizes seal ring to seal, can further strengthen the leakproofness between camera lens and the casing.

Drawings

Fig. 1 is a schematic diagram of a disassembled structure of an alternative embodiment of the vehicle-mounted camera.

Fig. 2 is a schematic assembly structure diagram of an alternative embodiment of the vehicle-mounted camera according to the invention.

Fig. 3 is a schematic cross-sectional structure view of axial surfaces of two limiting bosses in an alternative embodiment of the vehicle-mounted camera.

Fig. 4 is a schematic view of an inverted split structure of an alternative embodiment of the vehicle-mounted camera according to the present invention.

Detailed Description

The present application will now be described in further detail with reference to the accompanying drawings and specific examples. It should be understood that the following illustrative embodiments and description are only intended to explain the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments may be combined with each other in the present application without conflict.

As shown in fig. 1 to 3, an alternative embodiment of the present invention provides a vehicle-mounted camera, including a housing 1 having a mounting hole 10 at a top end thereof, a lens 3 inserted into the mounting hole 10 at a bottom end thereof, an outer sidewall of the lens 3 being formed with an outer convex ring 30 in a radially protruding manner, a connecting cylinder 5 inserted into the mounting hole 10, and a sealing gasket 6 disposed between an outer wall of the connecting cylinder 5 and a wall of the mounting hole 10 to fix the connecting cylinder 5 in the mounting hole 10 and seal a gap between the outer wall and the wall of the mounting hole, a position-limiting boss 50 abutting against a top wall of the housing 1 to limit a depth of the connecting cylinder 5 inserted into the mounting hole 10 being symmetrically protruded from an outer sidewall of the bottom end of the connecting cylinder 5, the bottom end of the lens 3 being inserted into the connecting cylinder 5 from the top end of the connecting cylinder 5 after being inserted into the mounting hole 10, the bottom surface of the outer convex ring 30 is fixedly connected with the end surface of the top end of the connecting cylinder 5, and the outer side surface 301 of the outer convex ring 30 is connected with the part 101, which is opposite to the hole wall of the mounting hole 10, into a whole through a laser welding process.

In the embodiment of the invention, the connecting cylinder 5 is additionally arranged and the sealing washer 6 is arranged between the outer wall of the connecting cylinder 5 and the hole wall of the mounting hole 10, so that on one hand, the connecting cylinder 5 can be fixed in the mounting hole 10 by using the sealing washer 6; on the other hand, realize the sealed of gap between the pore wall of the outer wall of connecting cylinder 5 and mounting hole 10, further with the bottom surface of lens 3's evagination ring 30 with the top end face fixed connection of connecting cylinder 5 realizes the fixed of lens 3 and connecting cylinder 5, inject the degree of depth that connecting cylinder 5 inserted mounting hole 10 through spacing boss 50 in addition, guarantee that evagination ring 30 corresponds with the position of mounting hole 10, conveniently with the lateral surface 301 of evagination ring 30 with both just right parts 101 of the pore wall of mounting hole 10 link as an organic whole through the laser welding technology, the welding seam leakproofness is good and connect firmly, can realize waterproof dustproof effect well, simultaneously because the gap between the pore wall of connecting cylinder 5 and the pore wall of mounting hole 10 utilizes seal ring 6 sealed, can further strengthen the leakproofness between lens 3 and the casing 1.

In an alternative embodiment of the present invention, as shown in fig. 1, 3 and 4, the bottom surface of the external convex ring 30 is sealingly adhered to the top end surface of the connector barrel 5 by a sealant 32. In this embodiment, the bottom surface of the outer protruding ring 30 and the top end surface of the connecting cylinder 5 are bonded by the sealant 32, so that relative fixation can be effectively achieved, and even if the welding layer formed by the laser welding process between the top surface 301 of the outer protruding ring 30 and the peripheral plane 101 of the top port of the mounting hole 10 fails, the lens 3 and the housing 1 can be effectively sealed by the sealing connection between the top end surface of the connecting cylinder 5 and the bottom surface of the outer protruding ring 30 and the sealing connection between the top end of the connecting cylinder 5 and the top port wall of the mounting hole 10; and the distance (i.e. focal length) between the bottom end of the lens 3 and the photosensitive surface of the photosensitive chip 7 can be adjusted by flexibly adjusting the thickness of the sealant 32.

In an alternative embodiment of the present invention, the bottom surface of the male ring 30 is integrally connected to the top end surface of the connecting cylinder 5 by a laser welding process. In this embodiment, the bottom surface of the outer convex ring 30 and the top end surface of the connecting cylinder 5 are connected into a whole by using a laser welding process, and relative fixation can also be effectively realized.

In an alternative embodiment of the present invention, as shown in fig. 3, the top surface 301 of the male ring 30 is flush with the peripheral plane 101 of the top end opening of the mounting hole 10. In this embodiment, the top surface 301 of the outer convex ring 30 and the peripheral plane 101 of the top port of the mounting hole 10 are flush when assembled, so that laser welding is facilitated, and the welding surface is relatively flat and beautiful after the laser welding.

In an alternative embodiment of the present invention, as shown in fig. 1, 3 and 4, the outer wall of the top of the connecting cylinder 5 is provided with a positioning ring groove 52, the sealing washer 6 is installed in the positioning ring groove 52 and protrudes from the notch of the positioning ring groove 52, when the top end of the connecting cylinder 5 is inserted into the mounting hole 10, the outer wall of the connecting cylinder 5 is matched with the hole wall of the mounting hole 10 to press the sealing washer 82, so that the sealing washer 6 is elastically deformed to clamp and fix the connecting cylinder 5 and seal the gap between the outer wall of the connecting cylinder 5 and the hole wall of the mounting hole 10. In this embodiment, adopt the outer wall of connecting cylinder 5 with the pore wall cooperation extrusion of mounting hole 10 seal ring 6 can effectively utilize seal ring 6 to realize the sealing connection between connecting cylinder 5 and the mounting hole 10, and through setting up positioning ring groove 52, avoid seal ring 6 to receive the extrusion in-process to take place relative slip, can improve the convenience of equipment moreover.

In an optional embodiment of the present invention, as shown in fig. 1 and 3, the vehicle-mounted camera further includes a PCB 7 fixedly assembled in the housing 1 and a photosensitive chip 8 assembled in the middle of the PCB 7, the bottom end of the connecting cylinder 5 is fixed on the PCB 7, and the photosensitive chip 8 is located inside the connecting cylinder 5. In this embodiment, the bottom end of the connecting cylinder 5 is fixed to the PCB board 7, and during specific assembly, the connecting cylinder 5 may be fixed to the PCB board 7, the bottom end of the lens 3 is inserted into the connecting cylinder 5, the outer convex ring 30 of the lens 3 is fixedly connected to the top end surface of the connecting cylinder 5, and finally the lens 3 and the connecting cylinder 5 are inserted into the mounting hole 10 of the housing 1 together to complete assembly.

In an alternative embodiment of the present invention, as shown in fig. 4, a pre-positioning column 54 is further protruded from a predetermined position of the bottom end of the connecting cylinder 5, a pre-positioning hole 70 is correspondingly formed on the PCB board 7, and the pre-positioning column 54 is inserted into the pre-positioning hole 70 to position the connecting cylinder 5 and the PCB board 7 relatively. In this embodiment, the pre-positioning column 54 is inserted into the pre-positioning hole 70, so as to realize the preliminary positioning of the connecting cylinder 5 and the PCB board 7, ensure the relative fixation of the positions of the photosensitive chips 8 on the connecting cylinder 5 and the PCB board 7, and avoid the situation that the optical axes of the lens 3 and the photosensitive chips 8 cannot be accurately coincided due to the displacement of the connecting cylinder 5 in the subsequent assembly process.

In an alternative embodiment of the present invention, as shown in fig. 1, fig. 3 and fig. 4, a first screw hole 501 is formed on the limiting boss 50, a first through hole 72 is formed on the PCB 7, and a first screw 74 passes through the first through hole 72 from the bottom surface of the PCB 7 and then is screwed into the first screw hole 501 to fix the bottom end of the connecting cylinder 5 on the PCB 7. In this embodiment, the screw 74 passes through the first through hole 72 from the bottom surface of the PCB 7 and then is fastened to the first screw hole 501, the first screw 74 is used to fix the bottom ends of the PCB 7 and the connecting cylinder 5 relatively, the assembly structure is relatively simple, and the assembly and disassembly are very convenient.

In an alternative embodiment of the present invention, as shown in fig. 1, fig. 3 and fig. 4, an opening 12 is provided at a bottom end of the housing 1, the PCB 5 and the photo chip 7 are both installed in the housing 1 from the opening 12, a second through hole 76 is further provided on the PCB 7, a second screw hole 14 is correspondingly provided on a top wall of the housing 1, and a second screw 78 passes through the second through hole 76 from a bottom surface of the PCB 7 and is locked in the second screw hole 14 to fix the PCB 7 in the housing 1. In the embodiment, the opening 12 is arranged, so that the PCB 7 and the photosensitive chip 8 can be conveniently arranged in the shell 1 from the opening 12, and the assembly efficiency is improved; the PCB 7 can be effectively fixed in the housing 1 by locking the second screws 78.

In an alternative embodiment of the present invention, as shown in fig. 1 and 3, the vehicle-mounted camera further includes a bottom cover 9 whose top surface edge abuts against the periphery of the opening 12 and is connected into a whole through a laser welding process, a plug connector 79 for being butted with an external connector is further disposed on a side surface of the PCB board 7 away from the optical sensor chip 8, and a connection sleeve 90 disposed around an outer side of the plug connector 18 and for inserting the external connector is further formed in a protruding manner on a bottom surface of the bottom cover 9. In the embodiment, by arranging the bottom cover 9, after the edge of the top surface of the bottom cover 9 is abutted against the periphery of the opening 12, the bottom cover and the opening are connected into a whole by adopting a laser welding process, so that the sealing connection of the bottom cover and the opening can be effectively realized, and the connection stability is good; and the connection between the vehicle-mounted camera and an external controller is facilitated and the acquired image signal is output by arranging the plug connector 79, and the connection sleeve 90 is arranged, so that the internal plug connector 79 can be protected, and the butt joint with an external connector is also facilitated.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a vehicle-mounted camera, includes that the top is equipped with the casing of mounting hole and inserts with the bottom camera lens in the mounting hole, the lateral wall of camera lens is formed with the evagination ring along radial arch, its characterized in that, vehicle-mounted camera still including insert connecting cylinder in the mounting hole and set up in the outer wall of connecting cylinder with between the pore wall of mounting hole in order to be fixed in the connecting cylinder and seal the sealing washer in the gap between outer wall and the pore wall, the lateral wall of the bottom of connecting cylinder protrusion symmetrically be equipped with the roof butt of casing is in order to inject the spacing boss that the connecting cylinder inserted the mounting hole degree of depth, the bottom of camera lens stretches into behind the mounting hole follow the top of connecting cylinder inserts in the connecting cylinder, the bottom surface of evagination ring with the top terminal surface fixed connection of connecting cylinder, the lateral surface of evagination ring with the part that the pore wall of mounting hole is just right between both links as an organic wholely through the laser welding technology.

2. The vehicular camera according to claim 1, wherein a bottom surface of said outer convex ring is sealingly bonded to a top end surface of said connector barrel by a sealant.

3. The vehicle-mounted camera according to claim 1, wherein a bottom surface of the outer convex ring and a top end surface of the connecting cylinder are integrated by a laser welding process.

4. The vehicle camera of claim 1, wherein a top surface of the outer collar is flush with a peripheral plane of a top end aperture of the mounting hole.

5. The vehicle-mounted camera according to claim 1, wherein the outer wall of the top of the connecting cylinder is provided with a positioning ring groove, the sealing washer is embedded in the positioning ring groove and protrudes from the notch of the positioning ring groove, and when the connecting cylinder is inserted into the mounting hole, the outer wall of the connecting cylinder and the hole wall of the mounting hole are matched to press the sealing washer, so that the sealing washer is elastically deformed to clamp and fix the connecting cylinder and seal the gap between the outer wall of the connecting cylinder and the hole wall of the mounting hole.

6. The vehicle-mounted camera according to claim 1, further comprising a PCB fixedly assembled in the housing and a photosensitive chip assembled in the middle of the PCB, wherein the bottom end of the connecting cylinder is fixed on the PCB, and the photosensitive chip is located inside the connecting cylinder.

7. The vehicle-mounted camera according to claim 6, wherein a pre-positioning post is further protruded from a predetermined position of the bottom end surface of the connecting cylinder, a pre-positioning hole is correspondingly formed in the PCB, and the pre-positioning post is inserted into the pre-positioning hole to relatively position the connecting cylinder and the PCB.

8. The vehicle-mounted camera according to claim 6, wherein the limiting boss is provided with a first screw hole, the PCB is provided with a first through hole, and a first screw passes through the first through hole from the bottom surface of the PCB and then is screwed in the first screw hole to fix the bottom end of the connecting cylinder on the PCB.

9. The vehicle-mounted camera according to claim 6, wherein an opening is formed in a bottom end of the housing, the PCB and the photo sensor chip are both installed in the housing through the opening, a second through hole is further formed in the PCB, a second screw hole is correspondingly formed in a top wall of the housing, and a second screw passes through the second through hole from a bottom surface of the PCB and is locked in the second screw hole to fix the PCB in the housing.

10. The vehicle-mounted camera according to claim 9, further comprising a bottom cover having a top surface edge abutting against a periphery of the opening and being connected to the opening by a laser welding process, wherein a connector for mating with an external connector is further provided on a side of the PCB board facing away from the photo chip, and a connection sleeve disposed around an outer side of the connector and for inserting the external connector is further formed on a bottom surface of the bottom cover in a protruding manner.