CN219499476U

CN219499476U - Vehicle-mounted camera

Info

Publication number: CN219499476U
Application number: CN202320547056.3U
Authority: CN
Inventors: 罗小平; 何成云
Original assignee: Shenzhen Longhorn Automotive Electronic Equipment Co Ltd
Current assignee: Shenzhen Longhorn Automotive Electronic Equipment Co Ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-08-08
Anticipated expiration: 2033-03-09

Abstract

The embodiment of the utility model provides a vehicle-mounted camera, which comprises a shell, a lens, a first PCB (printed circuit board) and a photosensitive chip, wherein the top end of the shell is provided with a mounting hole, the bottom end of the lens is inserted into the mounting hole, the first PCB is assembled in the shell, the photosensitive chip is assembled on the first PCB, the middle section of the lens is provided with external threads, the outer wall close to the bottom end is provided with a stop lug, and the vehicle-mounted camera further comprises: the top end of the connecting ring is fixedly connected with the bottom end of the lens, the central axis of the connecting ring coincides with the optical axis, the lens is aligned with the photosensitive chip on the first PCB board through an active focusing process, and the bottom end face of the connecting ring is fixedly adhered to the board surface of the first PCB board through a first sealing adhesive; and the top end of the lens extends out of the mounting hole from the shell, the blocking lug is abutted with the periphery of the inner end hole opening of the mounting hole, and the locking nut is correspondingly screwed on the external thread and abutted against the periphery of the outer end hole opening of the mounting hole to be matched with the blocking lug for locking the lens. The embodiment can effectively reduce the influence of the shell on image acquisition along with temperature change.

Description

Vehicle-mounted camera

Technical Field

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

Background

The existing vehicle-mounted camera generally comprises a shell, a lens fixedly adhered to the front end of the shell by means of glue, a PCB (printed circuit board) assembled on the rear end of the shell and a photosensitive chip assembled on the surface of the PCB and arranged right opposite to the lens, wherein the center point of the photosensitive chip is located on the optical axis of the lens. The focal length of the vehicle-mounted camera is usually fixed, however, as the parts of the camera are relatively more, each part has the phenomena of thermal expansion and contraction, and the size of each part can change, so that the size of each part of the camera can often change the focal length of a lens in the camera due to the change of the ambient temperature, and finally the definition of an image shot by the camera is poor; however, the lens and the PCB of the existing vehicle-mounted camera are usually assembled by means of a housing, and the housing has a larger size variation along with the temperature variation, which affects the image acquisition of the vehicle-mounted camera.

Disclosure of Invention

The technical problem to be solved by the embodiment of the utility model is to provide the vehicle-mounted camera, which can effectively reduce the influence of the shell on image acquisition along with temperature change.

In order to solve the technical problems, the embodiment of the utility model provides the following technical scheme: the utility model provides a vehicle-mounted camera, includes that the top is equipped with the casing of mounting hole, bottom insert camera lens in the mounting hole, assemble in first PCB board in the casing and assemble in on the first PCB board and optical center falls in the epaxial sensitization chip of optical axis of camera lens, the middle section outer wall of camera lens encircles the optical axis is equipped with the external screw thread and is equipped with along radial arch in the outer wall that is close to bottom department and keeps off the lug, vehicle-mounted camera still includes:

the top end of the connecting ring is fixedly connected with the bottom end of the lens, the central axis of the connecting ring coincides with the optical axis, the lens is aligned with a photosensitive chip on the first PCB board through an active focusing process, and the bottom end face of the connecting ring is fixedly adhered to the board surface of the first PCB board by means of first sealing glue; and

the locking nut is used for being in threaded fit with the external thread of the middle section of the lens, the top end of the lens extends out of the mounting hole from the inside of the shell, the blocking protruding block is abutted with the periphery of the inner end hole opening of the mounting hole, and the locking nut is correspondingly in threaded connection with the external thread and abutted against the periphery of the outer end hole opening of the mounting hole so as to be matched with the blocking protruding block to lock the lens.

Further, the top end of the connecting ring and the bottom end face of the lens are connected into a whole through a laser welding process.

Further, a dispensing groove is further formed in the inner wall of the shell, adjacent to the hole opening at the inner end of the mounting hole, around the connecting ring, and second sealing glue for sealing the gap between the stop protruding block and the shell is filled in the dispensing groove.

Further, a positioning groove for accommodating the stop lug is formed in the inner wall of the shell adjacent to the inner end hole of the mounting hole.

Further, the blocking protruding block is a ring body arranged around the lens, the positioning groove is a ring groove correspondingly, and the cross section shapes of the blocking protruding block and the positioning groove are non-circular and mutually matched.

Further, the lens is a waterproof lens.

Further, the shell comprises a front shell, the top end of which is provided with the mounting hole, the bottom end of which is provided with the opening, and a rear shell, the top edge of which is abutted with the periphery of the opening and connected into a whole through a laser welding process, the first PCB and the photosensitive chip are contained in the rear shell, and the lens is inserted into the mounting hole from the opening.

Further, the vehicle-mounted camera further comprises a second PCB which is assembled in the rear shell and connected with the first PCB through an internal connector, a transfer connector is further arranged on one side surface of the second PCB, far away from the first PCB, of the second PCB, a perforation is arranged on the side wall of the rear shell corresponding to the position of the transfer connector, and an external connector which is in butt joint with the transfer connector after penetrating through the perforation in a sealing mode is further assembled on the outer side wall of the rear shell.

Further, the middle section of external connector is equipped with the fixed plate along radial outside protrusion, a side that the fixed plate is close to the backshell encircles external connector and is equipped with the annular, it has the top from annular convex sealing washer to assemble in the annular, the backshell still be in the fenestrate position correspond be equipped with the locating groove of fixed plate adaptation, external connector passes when perforating, the fixed plate passes in the locating groove of backshell with the help of the screw lock, the sealing washer top from behind the annular protrusion butt in fenestrate outside drill way periphery.

After the technical scheme is adopted, the embodiment of the utility model has at least the following beneficial effects: according to the embodiment of the utility model, the external threads and the stop lugs are respectively arranged on the outer wall of the middle section and the outer wall of the bottom end of the lens, and the connecting ring and the locking nut are correspondingly additionally arranged, when the vehicle-mounted camera is specifically assembled, the connecting ring which is fixedly connected with the bottom end of the lens and the photosensitive chip on the first PCB are aligned through an active focusing process, then the end face of the bottom end of the connecting ring and the surface of the first PCB are fixedly adhered by means of a first sealing adhesive, the lens and the photosensitive chip are directly connected and fixed through the connecting ring, and the focal length between the lens and the photosensitive chip is not changed due to the fact that the shell changes along with temperature, so that the influence of temperature on image acquisition of the vehicle-mounted camera is reduced; in addition, stretch out the top of camera lens from in the casing the mounting hole, then utilize the fender lug with the inboard drill way periphery butt of mounting hole, lock nut and the external screw thread cooperation in the camera lens outside simultaneously to lock nut with the fender lug mutually support tightly the camera lens, realize that camera lens, first PCB board and the effective connection of casing are fixed.

Drawings

Fig. 1 is a schematic diagram of a split structure of an alternative embodiment of the vehicle-mounted camera of the present utility model.

Fig. 2 is a schematic diagram of a split structure of an alternative embodiment of the vehicle-mounted camera of the present utility model after the connection ring and the first PCB board are fixed by means of the first sealing adhesive.

Fig. 3 is a schematic diagram of an assembled structure of an alternative embodiment of the vehicle camera of the present utility model.

Fig. 4 is a schematic cross-sectional view of an alternative embodiment of the vehicle camera of the present utility model.

Fig. 5 is a schematic diagram of an inverted split structure of an alternative embodiment of the vehicle camera of the present utility model.

Fig. 6 is a schematic diagram of a split structure of an external connector and a rear housing of an alternative embodiment of the vehicle camera according to the present utility model.

Detailed Description

The present application is described in further detail below with reference to the drawings and specific examples. It should be understood that the following exemplary embodiments and descriptions are only for the purpose of illustrating the utility model and are not to be construed as limiting the utility model, and that the embodiments and features of the embodiments herein may be combined with one another without conflict.

As shown in fig. 1-5, an alternative embodiment of the present utility model provides a vehicle-mounted camera, which includes a housing 1 having a mounting hole 10 at a top end, a lens 2 having a bottom end inserted into the mounting hole 10, a first PCB 3 assembled in the housing 1, and a photosensitive chip 4 assembled on the first PCB and having an optical center falling on an optical axis of the lens 2, wherein an external thread 20 is disposed on an outer wall of a middle section of the lens 2 around the optical axis, and a stop bump 22 is disposed on an outer wall near the bottom end in a radial protrusion, and the vehicle-mounted camera further includes:

the top end of the connecting ring 5 is fixedly connected with the bottom end of the lens 2, the central axis of the connecting ring is coincident with the optical axis, the lens 2 and the photosensitive chip 4 on the first PCB 3 are aligned through an active focusing process, and the bottom end face of the connecting ring 5 and the plate surface of the first PCB 3 are adhered and fixed by means of a first sealant 50; and

the locking nut 6 is used for being in threaded fit with the external thread 20 in the middle section of the lens 2, the top end of the lens 2 extends out of the mounting hole 10 from the inside of the shell 1, the blocking protruding block 22 is abutted with the periphery of the inner end hole opening of the mounting hole 10, and the locking nut 6 is correspondingly in threaded connection with the external thread 20 and abutted against the periphery of the outer end hole opening of the mounting hole 10 to be matched with the blocking protruding block 22 to lock the lens 2.

According to the embodiment of the utility model, the external threads 20 and the stop lugs 22 are respectively arranged on the outer wall of the middle section and the outer wall of the bottom end of the lens 2, and the connecting ring 5 and the locking nut 6 are correspondingly additionally arranged, when the lens is specifically assembled, the connecting ring 5 fixedly connected with the bottom end of the lens 2 and the photosensitive chip 4 on the first PCB 3 are aligned through an active focusing process, then the bottom end face of the connecting ring 5 and the surface of the first PCB 3 are fixedly bonded by the aid of the first sealant 50, the lens 2 and the photosensitive chip 4 are directly fixedly connected by the connecting ring 5, and the focal length between the lens 2 and the photosensitive chip 4 is not changed due to the fact that the shell 1 changes along with temperature change, so that the influence of temperature on image acquisition of a vehicle-mounted camera is reduced; in addition, the top end of the lens 2 extends out of the mounting hole 10 from the inside of the housing 1, then the blocking protruding block 22 is abutted against the periphery of the inner hole opening of the mounting hole 10, and meanwhile, the locking nut 6 is in threaded fit with the external thread 20 on the outer side of the lens 2, so that the locking nut 6 and the blocking protruding block 22 are mutually matched to clamp the lens 2, and the lens 2, the first PCB 3 and the housing 1 are effectively connected and fixed.

The vehicle-mounted camera provided by the embodiment of the utility model is measured by a specific experiment, and is used in the temperature range of-40 ℃ to 105 ℃, and the acquired image definition has no obvious change.

In an alternative embodiment of the present utility model, the top end of the connecting ring 5 and the bottom end face of the lens 2 are connected into a whole through a laser welding process. In this embodiment, the top end of the connecting ring 5 and the bottom end of the lens 2 are connected into a whole by adopting a laser welding process, so that the connection between the connecting ring 5 and the bottom end of the lens 2 can be effectively realized, the sealing can be realized, and the sealing waterproof property of the vehicle-mounted camera can be effectively enhanced.

In an alternative embodiment of the present utility model, as shown in fig. 1, 4 and 5, a dispensing groove 12 is further disposed on the inner wall of the housing 1 adjacent to the inner end opening of the mounting hole 10, and the dispensing groove 12 is further filled with a second sealant 121 for sealing the gap between the stop protrusion 22 and the housing 1. In this embodiment, the glue dispensing groove 12 is further disposed at the outer side of the connection ring 5, and the second sealant 121 filled in the glue dispensing groove 12 is used to seal the gap between the stop ring 22 and the housing 1 effectively, so that external water vapor is prevented from entering the housing 1 through the mounting hole 10, and sealing waterproof performance of the vehicle-mounted camera is enhanced.

In a specific implementation, the first sealant 50 is AA glue, that is, epoxy resin, and the second sealant 121 is glue for achieving adhesive sealing, such as UV glue.

In an alternative embodiment of the present utility model, as shown in fig. 1, 4 and 5, a positioning groove 14 for receiving the stop protrusion 22 is provided on the inner wall of the housing 1 adjacent to the inner end of the mounting hole 10. In this embodiment, the positioning groove 14 is provided to position and assemble the stop lug 22, which is beneficial to improving the assembly efficiency.

In an alternative embodiment of the present utility model, as shown in fig. 1, 4 and 5, the stop protrusion 22 is a ring body disposed around the lens 2, and the positioning groove 14 is a corresponding ring groove, and the cross-sectional shapes of the stop protrusion 22 and the positioning groove 14 are both non-circular and mutually matched. In this embodiment, the stop lug 22 is a ring body, the positioning groove 14 is a ring groove, the assembly is convenient, the sealing is convenient to realize, the cross section shapes of the stop lug and the positioning groove are non-circular and mutually matched, and after the stop lug and the positioning groove are assembled and aligned, the positioning can be realized in the circumferential direction, so that the position deviation is avoided.

In an alternative embodiment of the present utility model, the lens 2 is a waterproof lens. In this embodiment, the waterproof lens is adopted in the lens 2, so that the influence of external vapor on the optical path transmission of the lens 2 is avoided, and the overall waterproof performance of the vehicle-mounted camera is improved. In the specific implementation, the lens 2 is a lens meeting the IP69K waterproof grade.

In an alternative embodiment of the present utility model, as shown in fig. 1 and 4-6, the housing 1 includes a front case 18 having the mounting hole 10 at a top end and an opening 16 at a bottom end, and a rear case 19 having a top edge abutting against a periphery of the opening 16 and integrally connected thereto by a laser welding process, the first PCB 3 and the photo-sensing chip 4 are both accommodated in the rear case 19, and the lens 2 is inserted into the mounting hole 10 from the opening 16. In this embodiment, the housing 1 includes a front housing 18 and a rear housing 19, where the front housing 18 is provided with an opening 16, so as to facilitate mounting the lens 2, the first PCB 3, the photosensitive chip 4, and other structures inside the housing 1; and the front shell 18 and the rear shell 19 are connected into a whole by adopting a laser welding process, so that the sealing between the front shell 18 and the rear shell 19 can be effectively realized, and the waterproof performance is enhanced.

In an alternative embodiment of the present utility model, as shown in fig. 1 and fig. 4-6, the vehicle-mounted camera further includes a second PCB 7 assembled in the rear housing 19 and connected to the first PCB 3 through an internal connector 70, a transit connector 72 is further disposed on a side surface of the second PCB 7 away from the first PCB 3, a through hole 191 is disposed on a side wall of the rear housing 19 corresponding to the transit connector 72, and an external connector 8 that is in butt joint with the transit connector 72 after passing through the through hole 191 in a sealing manner is further assembled on an outer side wall of the rear housing 19. In the embodiment, by arranging the second PCB 7, the transit connector 72 and the through hole 191, the vehicle-mounted camera is convenient to acquire power supply and data communication with external equipment; and the external connector 8 passes through the perforation 191 in a sealing way, so that external water vapor is prevented from entering the shell 1 through the perforation 191, and the waterproof performance is improved.

In the specific implementation, the first PCB 3 is an FPC board with a reinforced steel plate attached to the surface, and the second PCB 7 is a plastic printed circuit board made of conventional FR-4 material; an ISP image processing chip is usually arranged on the second PCB 7; the inner connector 70 is typically a flex cable connector; the transit connector 72 and the external connector 8 are typically coaxial signal transmission connectors that are mutually adapted.

In an alternative embodiment of the present utility model, as shown in fig. 1 and fig. 4 to fig. 6, a fixing plate 80 is protruded radially outwards from a middle section of the external connector 8, a ring groove 801 is formed around the external connector 8 on a side surface of the fixing plate 80, which is close to the rear housing 19, a sealing gasket 803 with a top end protruded from the ring groove 801 is assembled in the ring groove 801, a positioning groove 193 adapted to the fixing plate 80 is correspondingly formed in the rear housing 19 at a position of the through hole 191, and when the external connector 8 passes through the through hole 191, the fixing plate 80 is locked in the positioning groove 193 of the rear housing 19 by means of a screw 82, and the top end of the sealing gasket 803 is protruded from the ring groove 801 and then abuts against the periphery of an outer hole of the through hole 191. In this embodiment, the fixing plate 80 is locked in the positioning groove 193 of the rear housing 19 by means of the screw 82, so as to realize positioning connection between the rear housing 19 and the external connector 8, and the fixing plate 80 is used to press the sealing gasket 803 against the outer wall of the rear housing 19, and the top end of the sealing gasket 803 protrudes from the annular groove 801 and then abuts against the periphery of the outer hole of the through hole 191, so as to realize effective sealing of the through hole 191.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are all within the scope of the present utility model.

Claims

1. The utility model provides a vehicle-mounted camera, includes that the top is equipped with the casing of mounting hole, bottom are inserted camera lens in the mounting hole, assemble in first PCB board in the casing and assemble in on the first PCB board and optical center falls in the epaxial sensitization chip of optical axis of camera lens, its characterized in that, the middle section outer wall of camera lens encircles the optical axis is equipped with the external screw thread and is equipped with along radial arch in the outer wall that is close to bottom department and keeps off the lug, vehicle-mounted camera still includes:

2. The vehicle-mounted camera of claim 1, wherein the top end of the connecting ring and the bottom end face of the lens are connected into a whole through a laser welding process.

3. The vehicle-mounted camera of claim 1, wherein a dispensing groove is further formed in the inner wall of the housing adjacent to the inner end opening of the mounting hole and surrounds the connecting ring, and the dispensing groove is filled with a second sealant for sealing a gap between the stop lug and the housing.

4. A vehicle camera according to claim 1, 2 or 3, wherein a locating slot for receiving the stop lug is provided in an inner wall of the housing adjacent an inner end aperture of the mounting hole.

5. The vehicle-mounted camera of claim 4, wherein the stop projection is a ring body disposed around the lens, and the positioning groove is a corresponding ring groove, and the cross-sectional shapes of the stop projection and the positioning groove are non-circular and mutually fit.

6. The vehicle camera of claim 1, wherein the lens is a waterproof lens.

7. The vehicle-mounted camera as claimed in claim 1, wherein the housing includes a front case having the mounting hole at a top end and an opening at a bottom end, and a rear case having a top end edge abutting a periphery of the opening and integrally connected thereto by a laser welding process, the first PCB and the photo-sensing chip are accommodated in the rear case, and the lens is inserted into the mounting hole from the opening.

8. The vehicle-mounted camera of claim 7, further comprising a second PCB assembled in the rear housing and connected to the first PCB via an internal connector, wherein a transfer connector is further disposed on a side of the second PCB away from the first PCB, a perforation is disposed on a position of the rear housing side wall corresponding to the transfer connector, and an external connector is further assembled on an outer side wall of the rear housing and is in butt joint with the transfer connector after the external connector passes through the perforation in a sealing manner.

9. The vehicle-mounted camera of claim 8, wherein a fixing plate is arranged on the middle section of the external connector in a protruding mode along the radial direction, an annular groove is formed in the side face, close to the rear shell, of the fixing plate, a sealing gasket with the top end protruding from the annular groove is assembled in the annular groove, a positioning groove matched with the fixing plate is correspondingly formed in the rear shell at the position of the through hole, when the external connector passes through the through hole, the fixing plate is locked in the positioning groove of the rear shell by means of screws, and the top end of the sealing gasket is abutted to the periphery of an outer hole of the through hole after protruding from the annular groove.