Camera module structure

Abstract

The utility model discloses a camera module structure comprising a lens, a housing assembly connected with the lens, and a PCBA board and a PCBB board which are installed in the housing assembly, the housing assembly is provided with a plurality of fixing pins, the outer wall of the PCBA board is provided with a plurality of slots for the plurality of fixing pins to be inserted therein in a one-to-one correspondence manner, and the PCBA board is provided with a plurality of grooves for the plurality of fixing pins to be inserted therein in a one-to-one correspondence manner. The PCBA board is provided with the notch, the adhesive body is arranged between the notch and the fixing foot, and a screw hole penetrating through the PCBA board is not formed in the PCBA board any more, so that the PCBA board has a larger copper exposure area, the heat transfer surface area of the PCBA board is increased, and the heat dissipation performance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of camera structure design, and specifically relates to a camera module structure. Background Art

[0002] With the continuous development of intelligent transportation technology, especially in vehicle-mounted or autonomous driving technology, vehicles need to monitor road conditions through cameras and other equipment. The vehicle-mounted camera module currently used includes a lens, a housing, a PCBA board and a PCBB board. The PCBA board is provided with multiple screw holes that vertically penetrate the PCBA board. Bolts are assembled in the screw holes to fix the PCBA board to the housing. However, after the PCBA board is provided with multiple screw holes, the exposed copper area of ​​the PCBA board is reduced, so it will be difficult to dissipate heat. Utility Model Content

[0003] Aiming at the technical problem in the prior art that after screw holes are opened on a PCBA board, the exposed copper area is reduced, resulting in poor heat dissipation, the utility model provides a camera module structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A camera module structure comprises a lens, a shell assembly connected to the lens, and a PCBA board and a PCBB board installed in the shell assembly, wherein the shell assembly is provided with a plurality of fixing feet, and an outer wall of the PCBA board is provided with a plurality of notches into which the fixing feet are inserted one by one, and an adhesive is provided between the notches and the fixing feet.

[0006] Furthermore, a first filling gap is formed between each of the defective grooves and a corresponding fixed foot; the adhesive body includes an adhesive main body injected on the periphery of the PCBA board and a first adhesive split body integrally formed on the inner peripheral surface of the adhesive main body and filled in each of the first filling gaps, the outer wall surface of the first adhesive split body is bonded to the inner wall of the defective groove, and the inner wall of the first adhesive split body is bonded to the outer surface of the fixed foot.

[0007] Furthermore, the housing assembly includes a first half shell integrally connected to the lens and a second half shell detachably connected to the first half shell, and the PCBA board and the PCBB board are both installed in the second half shell.

[0008] Furthermore, the first half shell has a first cavity that penetrates along the optical axis direction, the lens is sealed and bonded to the end of the first half shell facing the object side, and the end surface of the first half shell facing the second half shell is provided with the plurality of fixing feet, and the plurality of fixing feet are distributed around the first cavity.

[0009] Furthermore, the outer dimension of the PCBA board is larger than the inner dimension of the first cavity, and on a projection plane perpendicular to the optical axis, the inner periphery of one end of the first half shell facing the second half shell overlaps with the outer edge of the PCBA board and forms a third filling gap;

[0010] The adhesive body protrudes from the second half shell along the optical axis direction toward one end of the first half shell and is bonded to the first half shell. The adhesive body also has a second adhesive split body that is integrated from the adhesive body and fills the third filling gap. One side of the second adhesive split body is bonded to the outer edge of the PCBA board, and the other side is bonded to an end face of the first half shell facing the second half shell.

[0011] Furthermore, the second half shell has a second cavity connected to the first cavity, and the PCBA board and the PCBB board are both arranged in the second cavity; a first step groove with a shape matching the outer edge of the PCBA board is provided on the second half shell at one end close to the first half shell; the PCBA board is placed on the tread of the first step groove, and a second filling gap for the adhesive body to fill in is formed between the outer side surface of the PCBA board and the riser surface of the first step groove; the adhesive body is filled in the second filling gap, and one end of the adhesive body is bonded to the tread of the first step groove, and the other end of the adhesive body is bonded to an end face of the first half shell facing the second half shell, the inner side surface of the adhesive body is bonded to the outer side surface of the PCBA board, and the outer side surface of the adhesive body is bonded to the riser surface of the first step groove.

[0012] Furthermore, a second step groove is provided on the inner side wall of the second cavity. On a projection plane perpendicular to the optical axis direction, the second step groove is surrounded by the first step groove, and the PCBB board is fixed to the upper end of the second step groove.

[0013] Furthermore, at least two spaced-apart positioning posts are provided in the second cavity for connecting with positioning holes on the PCBB board; at least two positioning holes are provided on the PCBB board at positions corresponding to the at least two positioning posts, wherein at least one positioning hole is defined as a strip hole.

[0014] Furthermore, at least two internally threaded mounting columns are provided in the second cavity, and first mounting holes corresponding to the internally threaded mounting columns are provided on the PCBB board, and the first mounting holes and the internally threaded mounting columns are connected by bolts.

[0015] Furthermore, a first mounting portion is provided on the lower end surface of the second half shell, and a second mounting hole communicating with the interior of the second half shell is provided in the first mounting portion, a wire-shedding plug-in connected to the PCBB board is passed through the second mounting hole, the wire-shedding plug-in has a second mounting portion whose position corresponds to the first mounting portion, and the first mounting portion is connected to the second mounting portion by mounting bolts.

[0016] In summary, the beneficial effects of the utility model are as follows: 1. A plurality of fixing feet are arranged on the first half shell, and a corresponding notch connected to the fixing feet is arranged on the side wall of the PCBA board. When the fixing feet enter the notch, the fixing feet are fixed in the notch by means of adhesive. The fixing of the PCBA board no longer requires the opening of a through screw hole on the PCBA board. The integrity of the PCBA board is higher, and a larger copper exposed area can be provided, which helps to improve the heat dissipation performance. 2. The lens and the first half shell become a whole, and there is no gap between the two. There is no need to install a sealing ring or sealant, which improves the waterproof performance and saves material costs. 3. When filling the fixing feet and the notch with adhesive, the adhesive can be injected on the first half shell and the second half shell. Not only can the fixing feet and the notch be fixed by adhesive, but also the first half shell and the second half shell can be bonded and fixed, which simplifies the assembly steps and saves processing time. Fourth, the PCBA board is fixed on the first step groove, the PCBB board is fixed on the second step groove, and both the PCBA board and the PCBB board are installed in the second half shell, which simplifies the structure of the first half shell, facilitates the processing and molding of the first half shell and the outer shell of the lens, and also helps to ensure the processing accuracy when processing the two step grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a camera module structure provided by the utility model.

[0018] Figure 2 yes Figure 1 Sectional view along AA direction.

[0019] Figure 3 It is a structural schematic diagram of the connection between the fixed foot and the notch in the utility model.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the first half shell in the utility model.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the first half shell and the adhesive in the utility model.

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the second half shell in the utility model.

[0023] Figure 7 yes Figure 6 Top view of the .

[0024] Figure 8 yes Figure 6 Bottom view of .

[0025] In the figure, 100-lens, 200-shell assembly, 210-first half shell, 211-fixed foot, 212-first cavity, 220-second half shell, 221-second cavity, 2210-convex portion, 2211-first connecting portion, 222-first step groove, 222A-tread, 222B-kick surface, 223-second step groove, 2230-positioning column, 2231-inner thread mounting column, 224-first mounting portion, 2240-second mounting hole, 2241-screw cavity, 300-PCBA board, 310-missing groove, 400-PCBB board, 500-viscosity, 600-bolt, 700-line plug-in, 710-second mounting portion, 800-mounting bolt. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific drawings.

[0027] See also Figure 1 and Figure 2 As shown, the present invention provides a camera module structure, including a lens 100, a housing assembly 200 connected to the lens 100, and a PCBA board 300 and a PCBB board 400 installed in the housing assembly 200, wherein the housing assembly 200 is provided with a plurality of fixing feet 211. Figure 3 The outer wall of the PCBA board 300 is provided with a plurality of slots 310 for a plurality of fixing legs 211 to be inserted therein one by one, and the slots 310 are formed by being recessed inward from the outer surface of the PCBA board 300. The depth of the slots 310 is less than the diameter of the fixing legs 211, and an adhesive 500 is provided between the slots 310 and the fixing legs 211. No screw holes are provided on the PCBA board 300 to penetrate the PCBA board 300, so that the PCBA board 300 can have a larger copper exposed area, and the surface area of ​​the PCBA board 300 to which heat can be transferred is increased, which means that heat can be transferred from the heating elements on the PCBA board 300 to the surrounding environment more quickly, thereby improving the heat dissipation performance.

[0028] The lens 100 includes a housing and a lens assembly installed in the housing. The housing and the shell assembly 200 are integrally formed by injection molding or die-casting. There is no longer a gap at the connection between the lens 100 and the shell assembly 200, which not only improves the waterproof performance of the camera module, but also eliminates the need to install a sealing ring at the connection, thereby saving structural parts such as sealing rings, helping to reduce material costs, and saving assembly steps.

[0029] The housing assembly 200 includes a first half shell 210 integrally connected to the lens 100 and a second half shell 220 detachably connected to the first half shell 210, and the PCBA board 300 and the PCB board 400 are both installed in the second half shell 220. The first half shell 210 and the second half shell 220 can be separated, which facilitates the first half shell 210 and the housing to be integrally formed by injection molding or die-casting, thereby reducing the difficulty of processing and forming.

[0030] See also Figure 5 The first half shell 210 has a first cavity 212 that runs through along the optical axis. The first cavity 212 communicates with the interior of the housing of the lens 100. The lens assembly (i.e., lenses, aperture blades, and other components) is installed in the housing. The lens 100 is located on the end of the first half shell 210 that faces the object side (the side facing the object when shooting, called the object side). Please continue to refer to Figure 5 The first half shell 210 is provided with a plurality of fixing feet 211 on one end surface facing the second half shell 220. The plurality of fixing feet 211 are distributed around the first cavity 212. The design of the plurality of fixing feet 211 can help to strengthen the connection strength of the connection.

[0031] A first filling gap is formed between each of the notches 310 and a corresponding fixed foot 211; the adhesive body 500 includes an adhesive body injected on the outer periphery of the PCBA board 300 and a first adhesive split body integrally formed on the inner periphery of the adhesive body and filled in each of the first filling gaps, the outer wall surface of the first adhesive split body is bonded to the inner wall of the notches 310, and the inner wall of the first adhesive split body is bonded to the outer surface of the fixed foot 211. The adhesive body 500 is filled in the notches 310 so that the fixed foot 211 is stably fixed in the notches 310, and the method of reinforcing the connection is convenient and quick, and the operation is simple, which reduces the difficulty of processing.

[0032] The outer dimensions of the PCBA board 300 are larger than the inner dimensions of the first cavity 212. On the projection plane perpendicular to the optical axis, the inner periphery of one end of the first half shell 210 facing the second half shell 220 overlaps with the outer edge of the PCB board 400 and forms a third filling gap. The adhesive body protrudes from the second half shell 220 along the optical axis and faces one end of the first half shell 210 and is bonded to the first half shell 210. The adhesive body 500 also has a second adhesive split body that is integrated from the adhesive body and filled into the third filling gap. One side of the second adhesive split body is bonded to the outer edge of the PCBA board 300, and the other side of the first half shell 210 is bonded to one end of the second half shell 220. When bonding and fixing the fixing foot 211, the processing personnel can also inject the adhesive body 500 on the first half shell 210 and the second half shell 220. Please refer to Figure 2 and Figure 4 When the fixing foot 211 is bonded into the notch 310 by using the adhesive 500, the adhesive 500 can also bond the connection between the first half shell 210 and the second half shell 220, thereby simplifying the assembly steps and reducing the difficulty of production and processing.

[0033] The second half shell 220 has a second cavity 221 connected to the first cavity 212. The PCBA board 300 and the PCB board 400 are both arranged in the second cavity 221, which is beneficial to make the structural construction of the first half shell 210 simpler without increasing the size of the shell assembly 200, and facilitate the integrated molding of the first half shell 210 and the outer shell.

[0034] See also Figure 6 , a first step groove 222 having a shape matching the outer edge of the PCBA board 300 is provided on one end of the second half shell 220 close to the first half shell 210; the PCBA board 300 is placed on the tread 222A of the first step groove 222, and a second filling gap for the adhesive body to fill in is formed between the outer side surface of the PCBA board 300 and the riser 222B of the first step groove 222; the adhesive body is filled in the second filling gap. One end of the adhesive body is bonded to the tread 222A of the first step groove 222, and the other end of the adhesive body is bonded to an end surface of the first half shell 210 facing the second half shell 220. The inner side surface of the adhesive body is bonded to the outer side surface of the PCBA board 300, and the outer side surface of the adhesive body is bonded to the riser 222B of the first step groove 222. The joints of the first half shell 210 , the second half shell 220 and the PCBA board 300 are all covered with adhesive 500 . The adhesive 500 not only realizes the connection and fixation of the joints, but also provides comprehensive waterproof protection for the joints.

[0035] The inner wall of the second cavity 221 is provided with a second step groove 223. Figure 7 On the projection plane perpendicular to the optical axis direction, the second step groove 223 is surrounded by the first step groove 222, and the PCBB board 400 is fixed to the upper end of the second step groove 223. The PCBA board 300 and the PCBB board 400 are both fixed in the second half shell 220, which is conducive to ensuring the processing accuracy when processing the two step grooves.

[0036] At least two spaced positioning posts 2230 are provided in the second cavity 221 for connecting with the positioning holes on the PCBB board 400. At least two positioning holes are provided on the PCBB board 400 at positions corresponding to the at least two positioning posts 2230, wherein at least one positioning hole is defined as a strip hole, which can prevent over-positioning. A first connecting portion 2211 for connecting each positioning post 2230 to the corresponding inner cavity wall is also provided in the second cavity 221, which increases the strength and molding of the positioning posts 2230 and the second half shell 220, and can also be quickly molded as a whole.

[0037] At least two internally threaded mounting columns 2231 are further provided in the second cavity 221, and the PCBB board 400 is provided with first mounting holes corresponding to the internally threaded mounting columns 2231 one by one. The first mounting holes and the internally threaded mounting columns 2231 are connected by bolts 600, so that the PCBB board 400 can be quickly and conveniently fixed on the second step groove 223, and disassembly and assembly are very convenient.

[0038] See also Figure 8 , a first mounting portion 224 is provided on the lower end surface of the second half shell 220, and a second mounting hole 2240 communicating with the interior of the second half shell 220 is provided in the first mounting portion 224, a wire-dropping plug-in 700 connected to the PCBB board 400 is passed through the second mounting hole 2240, the wire-dropping plug-in 700 has a second mounting portion 710 corresponding to the position of the first mounting portion 224, and the first mounting portion 224 is connected to the second mounting portion 710 by a mounting bolt 800. In order to facilitate the installation of the mounting bolt 800, at least two convex portions 2210 extending in a direction away from the first mounting portion 224 are provided in the second cavity 221, and a screw connection cavity 2241 is provided on the end surface of the first mounting portion 224, which is recessed in the direction of the convex portion 2210 and does not penetrate the convex portion 2210, and the mounting bolt 800 is screwed into the screw connection cavity 2241 to lock the first mounting portion 224 and the second mounting portion 710. The line-swinging plug-in 700 can be fixed without providing a through hole, thereby avoiding the problem of reduced waterproof performance of the second half shell 220 due to the provision of a through hole.

[0039] The structure of the camera module: 1. A plurality of fixing feet 211 are arranged on the first half shell 210, and a notch 310 connected to the fixing feet 211 is arranged on the side wall of the PCBA board 300. When the fixing feet 211 enter the notch 310, the fixing feet 211 are fixed in the notch 310 by the adhesive 500. The fixing of the PCBA board 300 no longer requires the opening of a through screw hole on the PCBA board 300. The integrity of the PCBA board 300 is higher, and a larger copper exposed area can be provided, which helps to improve the heat dissipation performance. 2. The lens 100 and the first half shell 210 are integrated into one, and there is no gap between the two. There is no need to install a sealing ring or sealant, which improves the waterproof performance and saves material costs. 3. When the adhesive 500 is filled at the position of the fixed foot 211 and the notch 310, the adhesive 500 can be injected on the first half shell 210 and the second half shell 220. The adhesive can not only fix the fixed foot 211 and the notch 310, but also bond and fix the first half shell 210 and the second half shell 220, simplifying the assembly steps and saving processing time. 4. The PCBA board 300 is fixed on the first step groove 222, the PCBB board 400 is fixed on the second step groove 223, and the PCBA board 300 and the PCBB board 400 are both installed in the second half shell 220, simplifying the structure of the first half shell 210, facilitating the processing and forming of the first half shell 210 and the outer shell of the lens 100, and also helping to ensure the processing accuracy when processing the two step grooves.

[0040] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure made using the contents of the specification and drawings of the present utility model, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present utility model.

Claims

1. A camera module structure, characterized in that: It includes a lens, a shell assembly connected to the lens, and a PCBA board and a PCBB board installed in the shell assembly. The shell assembly is provided with a plurality of fixing feet. The outer wall of the PCBA board is provided with a plurality of notches for the fixing feet to be inserted into one by one. An adhesive is provided between the notches and the fixing feet.

2. The camera module structure according to claim 1, characterized in that: A first filling gap is formed between each of the defective grooves and a corresponding fixed foot; the adhesive body includes an adhesive main body injected on the periphery of the PCBA board and a first adhesive split body integrally formed on the inner peripheral surface of the adhesive main body and filled in each of the first filling gaps, the outer wall surface of the first adhesive split body is bonded to the inner wall of the defective groove, and the inner wall of the first adhesive split body is bonded to the outer surface of the fixed foot.

3. The camera module structure according to claim 2, characterized in that: The housing assembly comprises a first half shell integrally connected to the lens and a second half shell detachably connected to the first half shell, and the PCBA board and the PCBB board are both installed in the second half shell.

4. The camera module structure according to claim 3, characterized in that: The first half shell has a first cavity that penetrates along the optical axis direction, the lens is sealed and bonded to the end of the first half shell facing the object side, and the end surface of the first half shell facing the second half shell is provided with a plurality of fixing feet, and the plurality of fixing feet are distributed around the first cavity.

5. The camera module structure as claimed in claim 4, characterized in that: The outer size of the PCBA board is larger than the inner size of the first cavity, and on a projection plane perpendicular to the optical axis, the inner edge of one end of the first half shell facing the second half shell overlaps with the outer edge of the PCBA board to form a third filling gap; The adhesive body protrudes from the second half shell along the optical axis direction toward one end of the first half shell and is bonded to the first half shell. The adhesive body also has a second adhesive split body that is integrated from the adhesive body and fills the third filling gap. One side of the second adhesive split body is bonded to the outer edge of the PCBA board, and the other side is bonded to an end face of the first half shell facing the second half shell.

6. The camera module structure according to claim 4, characterized in that: The second half shell has a second cavity connected to the first cavity, and the PCBA board and the PCBB board are both arranged in the second cavity; a first step groove with a shape matching the outer edge of the PCBA board is provided on the second half shell at one end close to the first half shell; the PCBA board is placed on the tread of the first step groove, and a second filling gap for the adhesive body to fill in is formed between the outer side surface of the PCBA board and the riser surface of the first step groove; the adhesive body is filled in the second filling gap, and one end of the adhesive body is bonded to the tread of the first step groove, and the other end of the adhesive body is bonded to an end face of the first half shell facing the second half shell, the inner side surface of the adhesive body is bonded to the outer side surface of the PCBA board, and the outer side surface of the adhesive body is bonded to the riser surface of the first step groove.

7. The camera module structure according to claim 6, characterized in that: A second step groove is provided on the inner side wall of the second cavity. On a projection plane perpendicular to the optical axis, the second step groove is surrounded by the first step groove, and the PCBB board is fixed to the upper end of the second step groove.

8. The camera module structure according to claim 7, characterized in that: At least two spaced-apart positioning posts are provided in the second cavity for connecting with positioning holes on the PCBB board; at least two positioning holes are provided on the PCBB board at positions corresponding to the at least two positioning posts, wherein at least one positioning hole is defined as a strip-shaped hole.

9. The camera module structure according to claim 7, characterized in that: At least two internally threaded mounting columns are further provided in the second cavity, and first mounting holes corresponding to the internally threaded mounting columns are provided on the PCBB board, and the first mounting holes and the internally threaded mounting columns are connected by bolts.

10. The camera module structure according to any one of claims 3 to 9, characterized in that: A first mounting portion is provided on the lower end surface of the second half shell, and a second mounting hole communicating with the interior of the second half shell is provided in the first mounting portion, a wire-shedding plug-in connected to the PCBB board is passed through the second mounting hole, the wire-shedding plug-in has a second mounting portion whose position corresponds to the first mounting portion, and the first mounting portion is connected to the second mounting portion by mounting bolts.

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