CN219960709U

CN219960709U - Vehicle-mounted camera module compatible with different light-sensing chips and vehicle

Info

Publication number: CN219960709U
Application number: CN202321695798.7U
Authority: CN
Inventors: 周杰龙; 刘晓超; 王春友
Original assignee: Suzhou Yihang Yuanzhi Intelligent Technology Co ltd
Current assignee: Suzhou Yihang Yuanzhi Intelligent Technology Co ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2023-11-03
Anticipated expiration: 2033-06-30

Abstract

The utility model relates to a vehicle-mounted camera module compatible with different light-sensitive chips, which comprises a lens, an upper shell, a circuit board, a lower shell and a board end connector, wherein a plurality of circles of precise threads are arranged at the middle lower part of a lens barrel of the lens, a flange on the lens barrel is in threaded connection with the lens barrel and is fixedly adhered by glue, and the bottom surface of the flange is fixedly adhered to the upper shell; a circle of bearing sinking table is arranged on the inner side of the upper shell, and the surface of the bearing sinking table, which is contacted with the circuit board, is a conductive surface; the top surface and the bottom surface of the circuit board are both provided with bare copper areas, the bare copper areas are connected with the grounding end of the circuit board, the circuit board is arranged on the bearing sinking table, and the bare copper areas on the top surface are contacted with the conductive surface of the bearing sinking table; the top end of the lower shell is provided with a circle of pressing convex ring, the top surface of the pressing convex ring is a conductive surface and is contacted with the bare copper area on the bottom surface of the circuit board; after the lower shell and the upper shell are assembled and fixed, the circuit board is pressed and fixed in the upper shell by the pressing convex ring of the lower shell. The camera module is beneficial to miniaturization of the module and can be compatible with different light-sensitive chips.

Description

Vehicle-mounted camera module compatible with different light-sensing chips and vehicle

Technical Field

The utility model relates to the technical field of vehicle-mounted cameras, in particular to a vehicle-mounted camera module compatible with different light-sensing chips and a vehicle.

Background

Nowadays, with the rapid development of new energy automobile industry, advanced auxiliary driving systems (ADAS) are rapidly spreading, which can reduce driver fatigue to some extent and improve driving safety. The camera module is indispensable in ADAS. In the prior art, considering that the camera module needs to meet the requirements of AA technology and EMC simultaneously, the camera module is usually designed to bond and fix the lens with the upper shell through UV glue, and fix the circuit board with the upper shell through screws. According to the mode, the circuit board is fixed with the upper shell through the screw, the area of the screw is reserved for the circuit board, components cannot be arranged in the area and the periphery of the area within a certain range, so that the size of the circuit board is increased, the size of the camera module is increased finally, and the miniaturization of the camera module and the arrangement of a vehicle body are not facilitated.

In addition, in order to make the imaging of the camera module clear, focusing is needed, that is, the distance between the flange of the lens and the imaging plane of the photosensitive chip is adjusted to a specific value, and the specific value depends on the 'flange back focus' parameter of the lens. Meanwhile, because different designs of different photo chip manufacturers, the height of an imaging plane (i.e. the distance between the imaging plane and the surface of the circuit board) of the photo chip is usually different, so that when the same lens is matched with different photo chips, the relative distance between the lens flange and the circuit board is different. Because the lens flange is fixed, and the lens flange and the circuit board are fixed with the upper shell, the required upper shell is different in height, and camera modules with different upper shell heights are required to be manufactured for different light sensing chips, so that the cost is increased.

Disclosure of Invention

In view of the above technical problems and drawbacks, an object of the present utility model is to provide a vehicle-mounted camera module compatible with different light-sensing chips, which is beneficial to miniaturization of the module and compatible with different light-sensing chips.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the vehicle-mounted camera module compatible with different light sensing chips comprises a lens, an upper shell, a circuit board, a lower shell and a board end connector, wherein a lens barrel of the lens is fixed with the upper shell through UV (ultraviolet) glue, and the upper shell and the lower shell are made of metal materials and are provided with plating layers on the surfaces; the improvement is that the middle lower part of the lens barrel is provided with a plurality of circles of precise threads, a flange on the lens barrel is in threaded connection with the lens barrel and is fixed by gluing, and the bottom surface of the flange is fixed by gluing with the upper shell through UV glue; a circle of bearing sinking table for bearing the circuit board is arranged on the inner side of the upper shell, and the surface of the bearing sinking table, which is contacted with the circuit board, is a conductive surface; the top surface and the bottom surface of the circuit board are both provided with bare copper areas, the bare copper areas are connected with the grounding end of the circuit board, the circuit board is arranged on the bearing sinking table, and the bare copper areas on the top surface are contacted with the conductive surface of the bearing sinking table; the top end of the lower shell is provided with a circle of pressing convex rings matched with the bearing sinking table, and the top surface of each pressing convex ring is a conductive surface and is contacted with a bare copper area on the bottom surface of the circuit board; after the lower shell and the upper shell are assembled and fixed, the circuit board is pressed and fixed in the upper shell by the pressing convex ring of the lower shell.

Preferably, a circle of glue containing grooves are formed in the bottom surface of the flange along the internal threads, the glue containing grooves are used for containing glue, and the surface of the surface, where the flange is bonded with the upper shell, is machined into a concave-convex alternate structure.

Preferably, a sealing ring is provided between the upper case and the lower case.

As the preferable mode of the utility model, a circle of first annular bare copper area is arranged on the outer edge of the outermost side of the top surface of the circuit board, a circle of second annular bare copper area is arranged on the outer edge of the outermost side of the bottom surface of the circuit board, the first annular bare copper area is profiled with a bearing sinking table at the bottom of the upper shell and used for bearing the circuit board, the second annular bare copper area is profiled with a pressing convex ring at the top of the lower shell and used for pressing the circuit board, and the first annular bare copper area, the second annular bare copper area and components at the inner side of the circuit board keep a safe distance.

As the optimization of the utility model, four sides of the bearing sinking table are respectively provided with a limiting rib, and the limiting ribs are used for radially limiting the circuit board.

As the optimization of the utility model, any one of the four sides of the bearing sinking platform is also provided with a fool-proof block, the outer edge of the circuit board is provided with a fool-proof opening at the position opposite to the fool-proof block, and the fool-proof block is matched with the fool-proof opening of the circuit board.

Preferably, the bottom of the lower shell is provided with a through hole, and the board end connector is inserted into the SMB terminal on the bottom surface of the circuit board through the through hole on the back of the lower shell and is fixed on the lower shell through two screws.

As a further preferable mode of the utility model, a circle of inner grooves for installing the sealing rings are arranged on the inner side of the upper shell at the position close to the bearing sinking table, and the pressing convex ring of the lower shell is sleeved with the sealing rings and then assembled with the upper shell.

As a further preferred aspect of the present utility model, the plate end connector and the lower housing are sealed by a plate end connector sealing ring and fixed by two screws.

The utility model also provides a vehicle, which comprises a vehicle-mounted camera module, wherein the vehicle-mounted camera module is the vehicle-mounted camera module compatible with different light-sensitive chips or the vehicle-mounted camera module compatible with different light-sensitive chips.

The utility model has the advantages and beneficial effects that:

(1) According to the camera module provided by the utility model, the circuit board (PCBA) is pressed and fixed through the pressing convex ring at the top of the lower shell, screws are not needed any more, the problem of screw locking stress caused by connection of the circuit board and the upper shell through the screws is avoided, the reliability of the circuit board is improved, and as the circuit board is not required to be provided with screw holes, a space is not needed to be reserved for the screws, the area of the circuit board which can be used for layout is increased, and the miniaturization of the module is facilitated; meanwhile, PCBA fixing screws and assembly time cost are saved, and production efficiency is improved.

(2) The flange of the lens provided by the utility model is screwed with the lens barrel through threads and fixed through dispensing, can realize the adjustment of the flange back Jiao Moji, can compensate the difference of the image surface heights of different light sensing chips, and realizes the compatibility of the same vehicle-mounted camera module with different light sensing chips.

(3) The surface of the bearing sinking table for bearing the PCBA in the upper shell is subjected to plating removal treatment, so that the surface is a conductive surface, the top of the lower shell is provided with a circle of annular convex structures (pressing convex rings) which are profiled with annular bare copper areas of the PCBA, the surface is subjected to plating removal treatment, and the upper shell and the lower shell are both contacted with the bare copper around the PCBA, so that the grounding and electromagnetic shielding performance is ensured.

(4) According to the vehicle-mounted camera module, the four sides of the bearing sinking table are respectively provided with the limit ribs for radially limiting the PCBA, so that the positioning holes are prevented from being arranged on the PCBA, and the area of the PCBA, which can be used for layout, is further increased; in addition, one side of the bearing sinking platform is also provided with a foolproof block, and the foolproof block is matched with a foolproof opening of the PCBA to prevent foolproof, so that the assembly is convenient.

(5) The camera module provided by the utility model is of a sealing design, and has excellent waterproof and dustproof performances; in addition, one surface of the flange, which is adhered to the upper shell, forms a concave-convex alternate structure on the surface through laser engraving or CNC, and the concave-convex alternate structure increases the contact area between the UV adhesive and the flange, changes the cross section shape of the UV adhesive, and can improve the pulling-off force and the shearing force adhered to the upper shell.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a camera module according to the present utility model;

FIG. 2 is a cross-sectional view of a camera module of the present utility model;

FIG. 3 is an isometric view of a lens of the present utility model;

FIG. 4 is a top view of the flange of the lens of the present utility model;

FIG. 5 is a top view of the upper housing of the present utility model;

FIG. 6 is an assembly view of the upper housing and the circuit board of the present utility model;

fig. 7 is a top view of the lower housing of the present utility model.

Reference numerals: lens cone 1, upper shell 2, circuit board 3, lower shell 4, board end connector 5, sealing washer 6, UV glue 7, screw 8, flange 101, bearing sinking platform 201, inner groove 202, limit rib 203, fool-proof block 204, pressing convex ring 401, through hole 402, glue containing groove 1011.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, the positional or positional relationship indicated by the terms such as "top surface", "bottom surface" and the like are based on the positional or positional relationship shown in the drawings, or the positional or positional relationship conventionally put in use of the product of the application, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore, should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, the vehicle-mounted camera module compatible with different light sensing chips provided in this embodiment includes a lens, an upper housing 2, a circuit board 3, a lower housing 4, and a board end connector 5, where a lens barrel 1 of the lens is fixed with the upper housing 2 by UV glue, and the upper housing 2 and the lower housing 4 are made of metal materials and have plating layers on surfaces; the improvement is that the middle lower part of the lens cone 1 is provided with a plurality of circles of precise threads, a flange 101 on the lens cone 1 is in threaded connection with the lens cone 1 and is fixed through glue adhesion, and the bottom surface of the flange 101 is fixed with the top surface of the upper shell 2 through UV glue 7;

a circle of bearing sinking platform 201 for bearing the circuit board is arranged on the inner side of the upper shell 2, and the surface of the bearing sinking platform 201, which is contacted with the circuit board 3, is a conductive surface (the plating layer of the removed surface is a conductive surface); the top surface and the bottom surface of the circuit board 3 are both provided with bare copper areas, the bare copper areas are connected with the grounding end of the circuit board, the circuit board 3 is arranged on the bearing sinking table 201, and the bare copper areas on the top surface are contacted with the conductive surface of the bearing sinking table 201; the top end of the lower shell 4 is provided with a circle of pressing convex rings 401 matched with the bearing sinking table 201, the top surface of each pressing convex ring 401 is a conductive surface (a plating layer on the removed surface is a conductive surface) and is contacted with a bare copper area on the bottom surface of the circuit board; after the lower casing 4 is assembled and fixed with the upper casing 2, the pressing convex ring 401 of the lower casing 4 presses and fixes the circuit board 3 in the upper casing 2, and simultaneously plays roles of grounding and electromagnetic interference shielding.

The lens in this embodiment further includes optical elements such as an optical lens and a light shielding pad, and the present utility model does not limit the installation of the optical elements in the lens barrel 1, and a person skilled in the art may use an existing optical element installation structure. In addition, the present utility model requires precise thread processing on the outer surface of the lens barrel 1, and for convenience of processing, a clearance groove (not shown) is provided between the precise thread on the lower part of the lens barrel 1 and the top and bottom of the lens barrel.

In this embodiment, a sealing ring 6 is disposed between the upper casing 2 and the lower casing 4, and the sealing ring 6 is assembled and extruded with the lower casing 4 via the upper casing 2 to form a seal, so as to play a role in waterproof and dustproof.

Further, as shown in fig. 3 and 4, in this embodiment, the flange 101 is in a circular ring structure, an aluminum alloy material is adopted, the surface is subjected to black anodic oxidation treatment, a circle of glue containing grooves 1011 are arranged on the bottom surface of the flange 101 along internal threads, the glue containing grooves 1011 are used for containing glue, and after the flange 101 is rotated to adjust the heights of the flange 101 and the lower end surface of the lens barrel 1 to a proper position, the flange 101 is adhered and fixed on the lens barrel 1 through the glue in the glue containing grooves; the surface that flange 101 and last casing 2 bond forms unsmooth alternate structure at the surface through radium carving or CNC, and unsmooth alternate structure has increased the area of contact of UV glue 7 and flange, has changed the UV simultaneously and has glued cross-sectional shape, can improve the pull-out force and the shearing force that bond with last casing 2.

Further, as shown in fig. 1 and 2, in this embodiment, a circle of inner groove 202 for installing the sealing ring 6 is provided on the inner side of the upper housing 2 near the bearing platform 201, and the pressing convex ring 401 of the lower housing 4 is sleeved with the sealing ring 6 and then assembled with the upper housing 2, and is fixed by two diagonal screws 8.

Further, as shown in fig. 5 and 6, in this embodiment, four sides of the carrying platform 201 are respectively provided with a limit rib 203, and the limit ribs 203 are used for radially limiting the circuit board 3; the fool-proof block 204 is further arranged on any one of the four sides of the bearing sinking table 201, fool-proof openings are formed in positions, opposite to the fool-proof blocks 204, of the outer edges of the circuit board 3, and the fool-proof blocks 204 are matched with the fool-proof openings of the circuit board 3.

Further, in this embodiment, the circuit board 3 is provided with a photosensitive chip, an SMB terminal, other related components and circuits; the photosensitive chip is used for converting optical signals provided by the lens into electric signals, and the SMB terminal is used for being spliced with the board-end connector 5; the top surface of circuit board 3 is outside along outer edge arrangement round first annular naked copper district, and the bottom surface is outside along outer edge arrangement round second annular naked copper district, first annular naked copper district is profiling with the annular bearing platform 201 of being used for bearing the weight of the circuit board of last casing 2 bottom, the annular pressing bulge loop 401 profile modeling of being used for pressing the circuit board of second annular naked copper district and lower casing top, first annular naked copper district, second annular naked copper district keep safe interval (1 mm) with circuit board 3 inboard components and parts to guarantee EMC performance.

Further, as shown in fig. 7, in this embodiment, a through hole 402 is provided at the bottom of the lower housing 4 for inserting a board end connector 5, the board end connector 5 is a FAKRA connector, the FAKRA connector passes through the through hole at the bottom of the lower housing 4 to be plugged with an SMB terminal on the bottom surface of the circuit board 3, and the FAKRA connector 5 is electrically connected with an external connector to provide an external power supply and signal transmission interface.

Further, in this embodiment, the FAKRA connector and the lower housing 4 are sealed by a plate end connector sealing ring and fixed by two screws.

The assembly method of the camera module provided by the embodiment is as follows:

(1) The fool-proof block 204 of the upper shell is aligned with the fool-proof notch of the circuit board (PCBA) and is arranged in the upper shell 2;

(2) The sealing ring 6 is arranged in the lower shell 4 along the outer side of the pressing convex ring 401 of the lower shell 4;

(3) The pressing convex ring 401 of the lower shell 4 is clamped into the upper shell 2;

(4) Locking two diagonal screws 8 to complete the assembly of the upper shell 2 and the lower shell 4;

(5) Rotating the flange 101 on the lens barrel 1, and adjusting the heights of the flange 101 and the lower end surface of the lens barrel 1 to proper positions:

if the distance between the top surface of the upper shell and the plane of the fixed circuit board 3 (i.e. the upper surface of the circuit board) is a, the image surface height of the photosensitive chip is b, the back focus BFL of the lens machinery is c, and the gap between the bonding surface of the upper shell and the bottom surface of the lens flange is fixedly designed to be 0.5mm, so that the upper shell is used as the space required by AA and is used for placing UV glue; wherein a, b, c are all obtainable by measurement or from a specification; at the moment, the heights of the flange and the lower end face of the lens barrel are adjusted to d=a+0.5mm-b-c, so that the lens is matched with the upper shell and AA assembly can be carried out;

(6) A circle of UV glue is dispensed on the top surface of the upper shell 2, then the lens is carried on the top surface of the upper shell 2 through AA equipment, and the lens and the shell are assembled through UV and heat curing;

(7) Inserting the FAKRA connector into the PCBA corresponding to the SMB terminal along the through hole 402 at the back of the lower shell 4, and locking 2 screws;

(8) And (5) completing the assembly of the camera.

Example 2

The present embodiment provides a vehicle including the vehicle-mounted camera module of embodiment 1.

The foregoing is a specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. The vehicle-mounted camera module compatible with different light sensing chips comprises a lens, an upper shell, a circuit board, a lower shell and a board end connector, wherein a lens barrel of the lens is fixed with the upper shell through UV (ultraviolet) glue, and the upper shell and the lower shell are made of metal materials and are provided with plating layers on the surfaces; the device is characterized in that a plurality of circles of precise threads are arranged at the middle lower part of the lens barrel, a flange on the lens barrel is in threaded connection with the lens barrel and is fixedly adhered by glue, and the bottom surface of the flange is fixedly adhered to the upper shell by UV glue; a circle of bearing sinking table for bearing the circuit board is arranged on the inner side of the upper shell, and the surface of the bearing sinking table, which is contacted with the circuit board, is a conductive surface; the top surface and the bottom surface of the circuit board are both provided with bare copper areas, the bare copper areas are connected with the grounding end of the circuit board, the circuit board is arranged on the bearing sinking table, and the bare copper areas on the top surface are contacted with the conductive surface of the bearing sinking table; the top end of the lower shell is provided with a circle of pressing convex rings matched with the bearing sinking table, and the top surface of each pressing convex ring is a conductive surface and is contacted with a bare copper area on the bottom surface of the circuit board; after the lower shell and the upper shell are assembled and fixed, the circuit board is pressed and fixed in the upper shell by the pressing convex ring of the lower shell.

2. The vehicle-mounted camera module compatible with different light-sensitive chips as claimed in claim 1, wherein a circle of glue containing grooves are formed on the bottom surface of the flange along the internal threads, the glue containing grooves are used for containing glue, and the surface of the surface, bonded with the upper shell, of the flange is processed into a concave-convex alternate structure.

3. The vehicle-mounted camera module compatible with different light sensing chips as defined in claim 1, wherein a sealing ring is arranged between the upper shell and the lower shell.

4. The vehicle-mounted camera module compatible with different light-sensing chips according to claim 1, wherein a circle of first annular bare copper area is arranged on the outermost edge of the top surface of the circuit board, a circle of second annular bare copper area is arranged on the outermost edge of the bottom surface of the circuit board, the first annular bare copper area is profiled with a bearing sinking table at the bottom of the upper shell and used for bearing the circuit board, the second annular bare copper area is profiled with a pressing convex ring at the top of the lower shell and used for pressing the circuit board, and the first annular bare copper area, the second annular bare copper area and components at the inner side of the circuit board keep a safe distance.

5. The vehicle-mounted camera module compatible with different light-sensitive chips as claimed in claim 1, wherein four sides of the bearing sinking platform are respectively provided with a limiting rib, and the limiting ribs are used for radially limiting the circuit board.

6. The vehicle-mounted camera module compatible with different light-sensitive chips according to claim 1, wherein any one of the four sides of the bearing sinking platform is further provided with a fool-proof block, the outer edge of the circuit board is provided with a fool-proof opening at a position opposite to the fool-proof block, and the fool-proof block is matched with the fool-proof opening of the circuit board.

7. The vehicle-mounted camera module compatible with different light-sensing chips according to claim 1, wherein a through hole is formed in the bottom of the lower shell, and the board-end connector penetrates through the through hole in the back of the lower shell and is plugged with the SMB terminal on the bottom surface of the circuit board.

8. The vehicle-mounted camera module compatible with different light-sensitive chips as claimed in claim 3, wherein a circle of inner grooves for installing sealing rings are arranged on the inner side of the upper shell at a position close to the bearing sinking table, and the pressing convex ring of the lower shell is sleeved with the sealing rings and then assembled with the upper shell and fixed by two diagonal screws.

9. The vehicle-mounted camera module compatible with different light sensing chips according to claim 7, wherein the sealing between the plate end connector and the lower shell is realized through a plate end connector sealing ring and is fixed through two screws.

10. A vehicle comprising a vehicle-mounted camera module, wherein the vehicle-mounted camera module is a vehicle-mounted camera module compatible with different light-sensing chips according to any one of claims 1 to 9.