Camera module

Abstract

The utility model provides a camera module which comprises a lens, a support, a front shell, a heating piece, a flexible circuit board and a circuit mainboard, the heating piece is arranged in the lens, the lens is connected with the support through threads, the support is welded and fixed with the front shell, the circuit mainboard is bonded at the bottom of the front shell through fixing glue, and the flexible circuit board is arranged in the front shell. One end of the flexible circuit board is connected with the heating piece, and the other end of the flexible circuit board penetrates through the front shell and is electrically connected with the circuit mainboard. The structure is stable and reliable, the lens and the support are in threaded connection, the connection reliability of the lens and the support is ensured, and the lens is prevented from loosening or falling out of the support after long-term use; the bracket and the shell are fixed in a welding manner, so that the stable structure of the camera module is further ensured, the welding manner is simple, and the lens can be quickly assembled; meanwhile, the heating piece is arranged in the lens, it is ensured that the lens can achieve defrosting and demisting, and the imaging quality of the camera module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical imaging equipment, in particular to a camera module. Background Art

[0002] With the development of the economy and technology, the trend towards automotive automation and intelligence has made the importance of vehicle-mounted camera modules increasingly prominent. Drivers are now increasingly relying on vehicle-mounted camera modules for assisted driving, especially in blind spot detection, collision warning, and autonomous driving. To ensure driving safety, increasingly higher requirements are being placed on vehicle-mounted camera modules. When a vehicle is driven in continuous rain, frost, or alternating hot and cold conditions, the inner and outer surfaces of the near-object side lens of the vehicle-mounted lens are prone to fogging or frost, seriously affecting the optical performance of the vehicle-mounted lens and endangering people's driving safety. At the same time, due to the harsh operating environment of vehicle-mounted camera modules, the module structure requires extremely high stability. The lens and housing in existing vehicle-mounted camera modules are mainly connected by glue or threaded connections, which cannot meet the requirements for vehicle-mounted camera module structural stability. Utility Model Content

[0003] In view of the above problems, the purpose of the present invention is to provide a camera module that can defrost and defog and has a stable structure.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides a camera module, comprising a lens, a bracket, a front shell, a heating plate, a flexible circuit board and a circuit main board, wherein the heating plate is arranged inside the lens, the lens is connected to the bracket by threads, the bracket is fixed to the front shell by welding, the circuit main board is adhered to the bottom of the front shell by fixing glue, one end of the flexible circuit board is connected to the heating plate, and the other end passes through the front shell and is electrically connected to the circuit main board.

[0006] Further preferably, a retaining wall is provided at the bottom of the front shell, and the circuit main board is bonded to the retaining wall by fixing glue.

[0007] Further preferably, a through hole is provided on the retaining wall, and the flexible circuit board is electrically connected to the main circuit board through the through hole.

[0008] Further preferably, a circle of blocking portions is provided at the bottom of the bracket, and the blocking portions protrude from the bottom of the bracket and extend and abut against the inner wall surface of the front shell.

[0009] Further preferably, the lens comprises a lens barrel and a lens arranged in the lens barrel, and the material of the lens barrel is 1 series aluminum alloy.

[0010] Further preferably, the bracket and the front shell are both made of 6 series aluminum alloy.

[0011] Further preferably, a sealant is provided at the threaded connection between the lens and the bracket.

[0012] Further preferably, the outer side wall of the lens barrel is provided with a flange portion, and the flange portion is provided with a section parallel to the optical axis of the lens.

[0013] Further preferably, a circuit board connector is connected to a side of the circuit main board away from the front shell, and the flexible circuit board is connected to the circuit board connector by plugging.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The structure of the utility model is stable and reliable. The lens and the bracket are connected by threads to ensure the reliability of the connection between the two and prevent the lens from loosening or falling out of the bracket after long-term use; the bracket and the shell are fixed by welding to further ensure the stability of the camera module structure, and the welding method is simple, which facilitates the rapid assembly of the lens; at the same time, a heating plate is provided in the lens to ensure that the lens can be defrosted and defogged, thereby improving the imaging quality of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic structural diagram of the camera module provided by the present invention;

[0018] Figure 2 An exploded view of the camera module provided by the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the connection between the lens, bracket and front shell provided by the utility model;

[0020] Illustration: 1-lens, 101-lens barrel, 102-flange, 103-cut surface, 2-bracket, 201-blocking part, 3-front shell, 301-blocking wall, 302-through hole, 4-fixing glue, 5-circuit board connector, 6-circuit board, 7-sealing glue, 8-flexible circuit board, 9-heating plate.

[0021] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0022] To better understand the present invention, various aspects of the present invention will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrations of embodiments of the present invention and are not intended to limit the scope of the present invention in any way. Throughout this specification, like reference numerals refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0024] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present invention, "may" is used to mean "one or more embodiments of the present invention." Furthermore, the term "exemplary" is intended to refer to an example or illustration.

[0025] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Please refer to Figure 1-Figure 3As shown, the present invention provides a camera module, including a lens 1, a bracket 2, a front shell 3, a heating plate 9, a flexible circuit board 8, and a circuit board 6. The heating plate 9 is arranged inside the lens 1. The lens 1 and the bracket 2 are connected by threads. The bracket 2 is welded and fixed to the front shell 3. The circuit board 6 is bonded to the bottom of the front shell 3 by fixing glue 4. One end of the flexible circuit board 8 is connected to the heating plate 9, and the other end passes through the front shell 3 to be electrically connected to the circuit board 6. The lens 1 and the bracket 2 are connected by threads to ensure the reliability of the connection between the two and prevent the lens 1 from loosening or falling out of the bracket 2 after long-term use. The bracket 2 and the shell are fixed by welding, further ensuring the stability of the camera module structure. The welding method is simple and facilitates the rapid assembly of the lens 1. At the same time, the heating plate 9 is arranged inside the lens 1 to ensure that the lens 1 can be defrosted and defogged, thereby improving the imaging quality of the camera module.

[0028] More specifically, a retaining wall 301 is provided at the bottom of the front housing 3, and the circuit board 6 is bonded to the retaining wall 301 via adhesive 4. The retaining wall 301 protrudes from the bottom of the front housing 3 to facilitate bonding between the front housing 3 and the circuit board 6. The retaining wall 301 can be designed with different sizes to suit different types of circuit boards 6, and the accuracy of the AA (alignment assembly) between the front housing 3 and the circuit board 6 can be achieved by simply controlling the machining accuracy of the retaining wall 301.

[0029] Retaining wall 301 is provided with a through-hole 302, through which the flexible circuit board 8 is electrically connected to the main circuit board 6. The lens 1 and bracket 2 are first threaded together, then the bracket 2 is soldered to the front housing 3. The flexible circuit board 8 is then extended through through-hole 302. The main circuit board 6 with the photosensitive chip is aligned with the front housing 3 and a circle of adhesive glue 4 is applied to secure the connection. The extended flexible circuit board 8 is then electrically connected to the main circuit board 6. In addition to facilitating the extension of the flexible circuit board 8 for connection to the main circuit board 6, the through-hole 302 also serves as a position limiter for the flexible circuit board 8, facilitating its connection to the main circuit board 6.

[0030] A barrier 201 is provided at the bottom of the bracket 2. This barrier 201 extends from the bottom of the bracket 2 and abuts against the inner wall of the front housing 3. This barrier 201 facilitates the alignment and assembly of the bracket 2 and the front housing 3, acting as a position limiter. It also reduces heat transfer from the weld between the bracket 2 and the front housing 3 to the lens 1, preventing any damage to the lens 1.

[0031] More specifically, the lens 1 includes a lens barrel 101 and a lens disposed within the lens barrel 101. The lens barrel 101 is made of a Series 1 aluminum alloy. The Series 1 aluminum alloy is high-purity aluminum with an aluminum content exceeding 99.00%. This series of aluminum alloys has good electrical conductivity and corrosion resistance.

[0032] Both the bracket 2 and the front housing 3 are made of 6-series aluminum alloy. 6-series aluminum alloy offers moderate strength, good corrosion resistance and weldability, as well as excellent processability (such as ease of extrusion forming) and oxidation coloring properties. Using the same material for the bracket 2 and front housing 3 facilitates welding and produces excellent results.

[0033] In order to further prevent external moisture or dust from entering the interior of the camera module, a sealant 7 is provided at the threaded connection between the lens 1 and the bracket 2 .

[0034] The outer wall of the lens barrel 101 is provided with a flange 102, which has a cut surface 103 parallel to the optical axis of the lens 1. The flange 102 facilitates the installation and positioning of the lens 1, while the cut surface 103 facilitates the clamping and positioning of the lens 1 with a fixture, facilitates threaded assembly of the lens 1 with the bracket 2, and also facilitates welding of the bracket 2 to the front housing 3.

[0035] The side of the circuit board 6 facing away from the front housing 3 is connected to a circuit board connector 5, to which the flexible circuit board 8 is plugged. Mounting the circuit board connector 5 on the back side of the circuit board 6 fully utilizes the surface area of ​​the circuit board 6, leaving ample space on the front side for alignment (AA) assembly with the front housing 3 and for mounting the photosensitive chip.

[0036] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A camera module, characterized in that: The invention comprises a lens (1), a bracket (2), a front shell (3), a heating plate (9), a flexible circuit board (8) and a circuit main board (6); the heating plate (9) is arranged inside the lens (1); the lens (1) and the bracket (2) are connected by screw threads; the bracket (2) and the front shell (3) are fixed by welding; the circuit main board (6) is bonded to the bottom of the front shell (3) by fixing glue (4); one end of the flexible circuit board (8) is connected to the heating plate (9); the other end passes through the front shell (3) and is electrically connected to the circuit main board (6).

2. A camera module according to claim 1, characterized in that: A retaining wall (301) is provided at the bottom of the front shell (3), and the circuit main board (6) is bonded to the retaining wall (301) by means of fixing glue (4).

3. A camera module according to claim 2, characterized in that: The retaining wall (301) is provided with a through hole (302), and the flexible circuit board (8) passes through the through hole (302) to be electrically connected to the main circuit board (6).

4. The camera module according to claim 1, wherein: A circle of blocking portions (201) is provided at the bottom of the bracket (2); the blocking portions (201) protrude from the bottom of the bracket (2) and extend to abut against the inner wall surface of the front shell (3).

5. The camera module according to claim 1, wherein: The lens (1) comprises a lens barrel (101) and a lens arranged in the lens barrel (101); the lens barrel (101) is made of a 1 series aluminum alloy.

6. The camera module according to claim 1, wherein: The bracket (2) and the front shell (3) are both made of 6 series aluminum alloy.

7. The camera module according to claim 1, wherein: The threaded connection between the lens (1) and the bracket (2) is provided with a sealant (7).

8. The camera module according to claim 5, wherein: The outer wall of the lens barrel (101) is provided with a flange portion (102), and the flange portion (102) is provided with a cut surface (103) parallel to the optical axis of the lens (1).

9. The camera module according to claim 1, wherein: A circuit board connector (5) is connected to the side of the circuit main board (6) away from the front shell (3), and the flexible circuit board (8) is connected to the circuit board connector (5) by plugging.

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