CN219761138U

CN219761138U - Camera module and vehicle-mounted camera

Info

Publication number: CN219761138U
Application number: CN202320526088.5U
Authority: CN
Inventors: 罗小平; 麦福利
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: 2023-09-26
Anticipated expiration: 2033-03-09

Abstract

The embodiment of the utility model provides a camera module and a vehicle-mounted camera, wherein the camera module comprises a PCB, a lens relatively fixed with the PCB, and a photosensitive chip assembled on the PCB and with an optical center falling on an optical axis of the lens, the periphery of one end face of the lens, which faces the PCB, also protrudes towards the PCB along the optical axis to form a connecting ring arranged around the optical axis, the end face of the connecting ring is also provided with a corresponding sunk dispensing groove extending around the optical axis, and a first sealant is filled in the dispensing groove and overflows from the dispensing groove and is adhered and fixed with the end face of the connecting ring and the surface of the PCB. In this embodiment, the adapter ring with the camera lens is fixed through first sealed sticky with the face of PCB board directly, can effectively reduce the influence of temperature variation to image acquisition.

Description

Camera module and 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 camera module and a vehicle-mounted camera.

Background

The existing vehicle-mounted camera generally comprises a front cover, a lens fixedly adhered to the front end part of the front cover by means of glue, a PCB (printed circuit board) assembled on the rear end part of the front cover, and a photosensitive chip assembled on the surface of the PCB and arranged opposite to the lens, wherein the center point of the photosensitive chip is positioned 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 of the existing vehicle-mounted camera and the PCB are usually connected and assembled by means of a front cover, and the front cover has a large size change along with temperature change, which affects the image acquisition of the vehicle-mounted camera.

Disclosure of Invention

The embodiment of the utility model aims to solve the technical problem of providing a camera module which can effectively reduce the influence of temperature change on image acquisition.

The embodiment of the utility model further aims to solve the technical problem of providing the vehicle-mounted camera, which can effectively reduce the influence of temperature change on image acquisition.

In order to solve the technical problems, the embodiment of the utility model provides the following technical scheme: the utility model provides a module of making a video recording, includes the PCB board, with PCB board relatively fixed's camera lens and assemble in on the PCB board and optical center falls on the epaxial sensitization chip of optical axis of camera lens, the orientation of camera lens still follows the periphery of the one end terminal surface of PCB board is protruding to stretch towards the PCB board direction to form towards the optical axis and encircle the go-between that the optical axis set up, still be equipped with corresponding sunken and encircle on the terminal surface of go-between the optical axis extends glue dispensing groove, glue dispensing inslot packing has first sealant, first sealant follows glue dispensing groove overflows and bonds fixedly the terminal surface of go-between with the face of PCB board.

Further, the glue dispensing groove is a notch groove which is formed by corresponding to the notch on the position, close to the periphery, of the end face of the connecting ring, a lateral notch is formed in the outer side face of the connecting ring in a corresponding manner, an accommodating groove is formed in the outer side wall of the connecting ring, close to the lateral notch of the notch groove, in a corresponding manner, in the PCB, the side face of the photosensitive chip is in compression joint with the end face of the connecting ring, and the first sealant overflows from the lateral notch of the glue dispensing groove and flows along the outer wall of the connecting ring to flow into the accommodating groove.

Further, the side wall of the connecting ring is also provided with an exhaust hole for communicating the inside and the outside of the connecting ring.

Further, the air vent is filled with second sealant for sealing the air vent after the camera module is assembled.

Further, the periphery of the outer opening of the exhaust hole is also provided with a flaring part for filling the second sealant.

Further, the first sealant is a UV glue.

Further, the second sealant is normal-temperature curing glue.

Further, the camera module further comprises a connector which is connected with the PCB and used for being connected with an external circuit.

On the other hand, in order to solve the above further technical problems, the embodiments of the present utility model provide the following technical solutions: the vehicle-mounted camera comprises a shell and a camera module assembled in the shell, wherein the camera module is the camera module according to any one of the above, one end of the shell is provided with a mounting hole, the top end of the lens extends out of the shell from the inside of the mounting hole, and the PCB board is relatively fixed with the shell.

Further, the PCB board is provided with a through hole and a preset inserting hole respectively, a screw hole and a preset inserting column are arranged on the inner wall of one side of the shell, facing the surface of the PCB board, of the shell, the preset inserting column is correspondingly inserted into the preset inserting hole, and a screw penetrates through the through hole and then is locked in the screw hole.

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 lens further protrudes out of the connecting ring along the optical axis towards the PCB, the adhesive dispensing groove is formed in the end face of the connecting ring, the first sealant is filled in the adhesive dispensing groove, the end face of the connecting ring is directly adhered to the surface of the PCB after the first sealant overflows the adhesive dispensing groove, the lens is directly fixed with the PCB, no other structural component exists between the lens and the PCB, and therefore the problem that the image quality is affected due to the change of the shooting focal length caused by the temperature change of other structural components is avoided.

Drawings

Fig. 1 is a schematic diagram of a split structure of an alternative embodiment of a camera module according to the present utility model.

Fig. 2 is a schematic diagram of an assembled structure of an alternative embodiment of the camera module of the present utility model.

Fig. 3 is a schematic cross-sectional view of an alternative embodiment of the camera module of the present utility model.

Fig. 4 is a schematic diagram of a split structure of an alternative embodiment of the vehicle camera of the present utility model.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the 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 of the utility model may be combined with one another without conflict.

As shown in fig. 1-3, an alternative embodiment of the present utility model provides a camera module 1, including a PCB 10, a lens 12 fixed relative to the PCB 10, and a photosensitive chip 14 assembled on the PCB 10 and having an optical center falling on an optical axis of the lens 12, wherein a periphery of an end face of the lens 12 facing the PCB 10 further protrudes along the optical axis toward the PCB 10 to form a connection ring 121 disposed around the optical axis, an end face of the connection ring 121 is further provided with a dispensing groove 123 correspondingly recessed and extending around the optical axis, and a first sealant 124 is filled in the dispensing groove 123, and the first sealant 124 overflows from the dispensing groove 123 and adheres and fixes an end face of the connection ring 121 and a board surface of the PCB 10.

According to the embodiment of the utility model, the lens 12 further protrudes out of the connecting ring 121 along the optical axis towards the PCB 10, the end face of the connecting ring 121 is provided with the dispensing groove 123, the first sealant 124 is filled in the dispensing groove 123, and after the first sealant 124 overflows the dispensing groove 123, the end face of the connecting ring 121 and the surface of the PCB 10 are directly bonded, so that the lens 12 and the PCB 10 are directly fixed, no other structural part exists between the lens 12 and the PCB 10, and the problem that the image quality is affected due to the change of the shooting focal length caused by the change of other structural parts when the temperature is changed is avoided.

In an alternative embodiment of the present utility model, as shown in fig. 1 and 3, the dispensing groove 123 is a notch groove formed by correspondingly recessing a portion of the end surface of the connecting ring 121 near the periphery, where a lateral notch 125 is correspondingly formed on the outer side surface of the connecting ring 121, the connecting ring 121 is further correspondingly recessed with a receiving groove 126 at the lateral notch 125 near the notch groove 123, the PCB board 10 is correspondingly pressed against the end surface of the connecting ring 121 with a side surface provided with the photosensitive chip 14, and the first sealant 124 overflows from the lateral notch of the dispensing groove 123 and flows along the outer wall of the connecting ring 121 to flow into the receiving groove 126. In this embodiment, the glue dispensing groove 123 is a notch groove, during specific assembly, an active focusing process may be adopted to align the connecting ring 121 with the photosensitive chip 14, that is, the PCB board 10 may be clamped by using a manipulator, and meanwhile, the lens 12 is inverted, the PCB board 10 is pressed onto the end face of the connecting ring 121 from top to bottom with a side face provided with the photosensitive chip 14, then the manipulator is controlled to drive the PCB board 10 to translate and rotate, so that the optical center of the photosensitive chip 14 on the PCB board 10 accurately falls on the optical axis of the lens 12, then the manipulator fixes the PCB board 10, the first sealant 124 in the glue dispensing groove 123 overflows from the lateral notch 125 and flows along the outer wall of the connecting ring 121 into the accommodating groove 126, then the first sealant 124 is controlled to be cured, the contact area between the first sealant 124 and the connecting ring 121 is large, and the bonding is more firm.

In an alternative embodiment of the present utility model, as shown in fig. 1-3, the side wall of the connection ring 121 is further provided with a vent hole 127 for communicating the inside and outside of the connection ring 121. When the first sealant 124 is a gel that needs to be heated or cooled to achieve curing, because the space of the inner cavity of the connecting ring 121 is relatively sealed, the air in the inner cavity of the connecting ring is heated or cooled and cannot be immediately discharged, so that the relative positions of the lens 12 and the photosensitive chip 14 before the first sealant 124 is uncured are offset.

In an alternative embodiment of the present utility model, as shown in fig. 3, the vent hole 127 is further filled with a second sealant 128 for sealing the vent hole 127 after the camera module 1 is assembled. In this embodiment, after the assembly of the camera module 1 is completed, in order to prevent dust or water mist from entering between the lens 12 and the PCB 10 during the operation of the camera module 1, thereby affecting the image quality, the exhaust hole 127 is sealed with the second sealant 128.

In an alternative embodiment of the present utility model, as shown in fig. 3, a flared portion 129 for filling the second sealant 128 is further provided at the outer opening periphery of the exhaust hole 127. In this embodiment, the expansion portion 129 is further provided, so that the second sealant 128 is conveniently filled, and sealing of the exhaust hole 127 is effectively achieved.

In an alternative embodiment of the present utility model, the first sealant 124 is a UV glue. In this embodiment, the first sealant 124 is a UV adhesive, which is a thermosetting adhesive, and after curing, the connection is stable and the bonding effect is good.

In an alternative embodiment of the present utility model, the second sealant 128 is a room temperature curing glue. In this embodiment, the second sealant 128 is a normal temperature curing adhesive, so as to avoid the problem that the air in the inner cavity of the connecting ring 121 is heated or cooled and cannot be immediately discharged when the second sealant 128 is cured.

In an alternative embodiment of the present utility model, as shown in fig. 1-3, the camera module 1 further includes a connector 16 connected to the PCB 10 for connecting to an external circuit. In this embodiment, the connection between the PCB 10 and the external circuit is also facilitated by providing the connector 16.

On the other hand, as shown in fig. 4, an embodiment of the present utility model provides a vehicle-mounted camera, which includes a housing 3 and a camera module assembled in the housing 3, where the camera module 1 is a camera module as described in the foregoing embodiment, one end of the housing 3 is provided with a mounting hole 30, the top end of the lens 12 extends from the inside of the mounting hole 30 to the outside of the housing 2, and the PCB 10 is fixed relative to the housing 2. In this embodiment, the vehicle-mounted camera adopts the camera module 1 as described above, so that the influence of temperature change on image acquisition can be effectively reduced.

In an alternative embodiment of the present utility model, as shown in fig. 4, the PCB 10 is provided with a through hole 101 and a pre-positioning hole 103, the inner wall of the side of the housing 3 facing the board surface of the PCB 10 is provided with a screw hole 32 and a pre-positioning post 34, the pre-positioning post 34 is correspondingly inserted into the pre-positioning hole 101, and a screw 36 is inserted through the through hole 101 and then locked in the screw hole 32. In this embodiment, the pre-positioning posts 34 are correspondingly inserted into the pre-positioning insertion holes 101, so that the pre-positioning of the PCB 10 and the housing 3 can be achieved, and the PCB 10 and the housing 2 can be effectively fixed relatively by locking the screws 36.

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 module of making a video recording, includes the PCB board, with PCB board relatively fixed's camera lens and assemble in on the PCB board and optical center falls on the epaxial sensitization chip of optical axis of camera lens, its characterized in that, the orientation of camera lens still follows the periphery of the one end terminal surface of PCB board is protruding to stretch towards the PCB board direction to form towards the optical axis and encircle the go-between that the optical axis set up, still be equipped with corresponding sunken and encircle on the terminal surface of go-between the terminal surface the optical axis extends glue the groove, glue the inslot and fill and have first sealant, first sealant is followed glue the groove overflows and bonds fixedly the terminal surface of go-between with the face of PCB board.

2. The camera module of claim 1, wherein the dispensing groove is a notch groove formed by correspondingly recessing a part of the end face of the connecting ring, which is close to the periphery, and a lateral notch is correspondingly formed on the outer side face of the connecting ring, the outer side wall of the connecting ring is correspondingly recessed at the lateral notch near the notch groove, a containing groove is correspondingly formed in the outer side wall of the connecting ring, the PCB board is correspondingly pressed against the end face of the connecting ring by a side face provided with the photosensitive chip, and the first sealant overflows from the lateral notch of the dispensing groove and flows along the outer wall of the connecting ring to flow into the containing groove.

3. The camera module of claim 1, wherein the side wall of the connecting ring is further provided with an exhaust hole for communicating the inside and the outside of the connecting ring.

4. A camera module according to claim 3, wherein the vent hole is further filled with a second sealant for sealing the vent hole after the camera module is assembled.

5. The camera module of claim 4, wherein the perimeter of the outer opening of the vent further comprises a flare for filling the second sealant.

6. A camera module according to claim 1 or 3, wherein the first sealant is a UV glue.

7. The camera module of claim 4, wherein the second sealant is a room temperature curing glue.

8. The camera module of claim 1, further comprising a connector coupled to the PCB for connecting to an external circuit.

9. The vehicle-mounted camera comprises a shell and a camera module assembled in the shell, and is characterized in that the camera module is a camera module according to any one of claims 1-8, one end of the shell is provided with a mounting hole, the top end of the lens extends out of the shell from the inside of the mounting hole, and the PCB is relatively fixed with the shell.

10. The vehicle-mounted camera of claim 9, wherein the PCB board is provided with a through hole and a pre-positioning jack, an inner wall of one side of the casing facing the surface of the PCB board is provided with a screw hole and a pre-positioning plug, the pre-positioning plug is correspondingly inserted into the pre-positioning jack, and a screw penetrates through the through hole and is locked in the screw hole.