Fixing structure of camera base and circuit board and camera module

Abstract

The utility model discloses a fixing structure of a camera base and a circuit board. The fixing structure comprises a base, a circuit board and a glue layer, a fixing groove is formed in the circuit board, a boss is arranged at the bottom position where the base and the fixing groove are connected in an inserted mode, the base and the circuit board are located in a matched mode through the fixing groove and the boss, and the portion between the fixing groove and the boss is coated with the glue layer so that the base and the circuit board can be fixedly connected. Compared with the prior art, the bosses on the base are matched with the fixing grooves in the PCB, so that the assembling precision of the base and the circuit board is improved. When glue is dispensed on the PCB, glue is applied to the bottom of the fixing groove and the boss is inserted into the fixing groove in a matched mode, the inner wall of the fixing groove and the boss are fully coated with the glue through extrusion of the boss, the contact area of the fixing groove and the boss is larger, and the bonding strength of the glue layer for bonding the base and the PCB is improved. In addition, the utility model also relates to a camera module.

Description

Technical Field

[0001] The utility model relates to the field of cameras, in particular to a fixing structure of a camera base and a circuit board and a camera module. Background Art

[0002] In the prior art, for a camera module with a CSP structure, the assembly method of the base and the PCB is usually to limit the position using the positioning posts on the base and the positioning holes on the PCB. However, when designing, the size of the positioning holes needs to be larger than the positioning posts, resulting in low assembly accuracy between the base and the PCB. In addition, the PCB needs to be fixed with glue at the connection with the base. When the base and the PCB are pressed together, the glue will flow out through the PCB positioning holes, causing the bottom of the PCB to be uneven, which will further affect the assembly accuracy of the base and the PCB.

[0003] Therefore, there is an urgent need to propose a fixing structure of a base and a circuit board with high assembly accuracy. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a fixing structure of a camera base and a circuit board and a camera module.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A fixing structure for a camera base and a circuit board, comprising: a base, a circuit board and a glue layer; a fixing groove is provided on the circuit board, a boss is provided at the bottom position where the base and the fixing groove are plugged, the base and the circuit board are positioned by the fixing groove and the boss, and the glue layer is applied between the fixing groove and the boss to fix the base and the circuit board.

[0007] In one embodiment, the circuit board is a PCB.

[0008] In one embodiment, a mounting cavity is provided in the base, and an inner wall of the mounting cavity is provided with an internal thread.

[0009] In one embodiment, the boss is in a straight line shape.

[0010] In one embodiment, the cross section of the fixing groove along the width direction is an isosceles trapezoid.

[0011] In one embodiment, a first limiting rib is provided in the fixing groove, and a second limiting rib is provided on the abutting surface of the boss with the fixing groove to limit the position of the first limiting rib.

[0012] In one embodiment, the base is a plastic base.

[0013] In one embodiment, the width of the fixing groove ranges from 0.25 mm to 0.35 mm, and the width of the boss ranges from 0.2 mm to 0.3 mm.

[0014] In one embodiment, the depth of the fixing groove ranges from 0.4 mm to 0.6 mm, and the height of the boss ranges from 0.3 mm to 0.5 mm.

[0015] A camera module comprises the above-mentioned fixing structure of the camera base and the circuit board and a camera, wherein the camera is connected to the base.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] 1. The fixing structure of the camera base and the circuit board and the camera module of the utility model are provided by setting a base, a glue layer and a circuit board, and a fixing groove is provided on the circuit board. A boss is provided at the bottom position where the base and the fixing groove are plugged in, and the base and the circuit board are positioned by the fixing groove and the boss. Compared with the prior art, the boss on the base matches the fixing groove on the PCB, and there is no need to design positioning holes and positioning columns, which improves the assembly accuracy of the base and the circuit board.

[0018] 2. The fixing structure of the camera base and the circuit board and the base and PCB of the camera module of the utility model are assembled and fixed by the boss and the fixing groove, and a glue layer is applied between the fixing groove and the boss, and the glue layer is used to fix the base and the circuit board. When dispensing glue on the PCB, the glue is applied to the bottom of the fixing groove, which improves the accuracy of the dispensing route, and after dispensing glue, in the process of the boss being matched and inserted into the fixing groove, the glue is fully applied to the inner wall and the boss of the fixing groove through the extrusion of the boss, so that the boss and the fixing groove are fully filled with the glue layer. Compared with the prior art, the contact area between the fixing groove and the boss is larger, which increases the bonding strength of the glue layer bonding the base and the PCB, making the connection between the base and the PCB more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0020] Figure 1 It is a cross-sectional schematic diagram of a fixing structure of a camera base and a circuit board in one embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of a circuit board in one embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a camera module in one embodiment of the utility model.

[0023] Reference numerals:

[0024] Base 10 , boss 11 , circuit board 20 , fixing groove 21 , glue layer 30 , camera 40 . DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0026] This application proposes a fixing structure of a camera base and a circuit board, please refer to Figure 1 and Figure 2 , including: a base 10, a glue layer 30 and a circuit board 20. A fixing groove 21 is provided on the circuit board 20, and a boss 11 is provided at the bottom position where the base 10 is plugged into the fixing groove 21. The base 10 and the circuit board 20 are positioned by the fixing groove 21 and the boss 11. Compared with the prior art, the boss 11 on the base 10 matches the fixing groove 21 on the PCB, and there is no need to design positioning holes and positioning columns, thereby improving the assembly accuracy of the base 10 and the circuit board 20. The base 10 and the PCB are assembled and fixed by the boss 11 and the fixing groove 21. A glue layer 30 is applied between the fixing groove 21 and the boss 11. The glue layer 30 is used to fix the base 10 and the circuit board 20. When gluing the PCB, the glue is applied to the bottom of the fixing groove 21, which improves the accuracy of the gluing route. After gluing, when the boss 11 is matched and inserted into the fixing groove 21, the glue is fully applied to the inner wall of the fixing groove 21 and the boss 11 through the extrusion of the boss 11, so that the boss 11 and the fixing groove 21 are fully filled with the glue layer 30. Compared with the prior art, the contact area between the fixing groove 21 and the boss 11 is larger, which increases the bonding strength of the glue layer 30 bonding the base 10 and the PCB, making the connection between the base 10 and the PCB more reliable.

[0027] Since the base 10 needs to be assembled to other equipment and will shake and tremble during use, the circuit board 20 of the present application is set as a PCB. The PCB has a high hardness and can carry the components soldered thereon. When the base 10 and the circuit board 20 are fixed by the boss 11 and the fixing groove 21, the PCB will not be deformed, and the assembly process can be completed smoothly. Preferably, the base 10 is a plastic base.

[0028] It should be noted that the shapes of the boss 11 and the fixing groove 21 are always complementary and can be well spliced. Moreover, before the circuit board 20 and the base 10 are assembled, the staff applies glue to the bottom of the fixing groove 21. When the boss 11 is inserted into the fixing groove 21, the uncured glue has fluidity, so that the glue is spread between the boss 11 and the fixing groove 21. After the glue is cured, a glue layer 30 is formed, thereby firmly connecting the base 10 and the circuit board 20.

[0029] Furthermore, a first limiting rib is provided in the fixing groove 21, and a second limiting rib is provided on the abutting surface of the boss 11 with the fixing groove 21 to limit the first limiting rib. When the boss 11 of the base 10 is inserted into the fixing groove 21 in the circuit board 20, the first rib and the second rib limit each other to prevent the base 10 and the circuit board 20 from being offset before the glue solidifies, thereby further improving the accuracy of the circuit board 20 being bonded to the base 10. In one embodiment, an installation cavity is provided in the base 10, and the installation cavity is used to install the camera 40. The inner wall of the installation cavity is provided with an internal thread so as to be rotatably connected to the camera 40. Preferably, please refer to Figure 1 , the boss 11 is in the shape of a letter "I", a rectangular parallelepiped structure is extended downward from the bottom of the base 10, and the fixing groove 21 of the circuit board 20 is also in the shape of a letter "I", the fixing groove 21 is opened from one end of the circuit board 20 to the other end, and the boss 11 is inserted into the fixing groove 21. In another embodiment, the cross section of the fixing groove 21 along the width direction is an isosceles trapezoid, and the two parallel sides of the cross section are arranged at the top, which increases the contact area between the boss 11 and the fixing groove 21, thereby making the adhesive area of ​​the glue larger, so that the connection between the base 10 and the circuit board 20 is more stable.

[0030] Furthermore, the width of the fixing groove 21 ranges from 0.25 mm to 0.35 mm, and the width of the boss 11 ranges from 0.2 mm to 0.3 mm. In a preferred embodiment, the width of the fixing groove 21 is 0.30 mm, and the width of the boss 11 is 0.25 mm.

[0031] Furthermore, the depth of the fixing groove 21 is in the range of 0.4 mm to 0.6 mm, and the height of the boss 11 is in the range of 0.3 mm to 0.5 mm. In a preferred embodiment, the depth of the fixing groove 21 is 0.50 mm, and the width of the boss 11 is in the range of 0.4 mm.

[0032] In addition, it should be noted that the width of the fixing groove 21 is always slightly larger than the width of the boss 11, so that the boss 11 can be inserted into the fixing groove 21, and the gap between the boss 11 and the fixing groove 21 needs to be filled with a glue layer 30. Similarly, the depth of the fixing groove 21 is slightly larger than the height of the boss 11.

[0033] This application also proposes a camera module, please refer to Figure 1 , Figure 2 and Figure 3The camera module includes the fixing structure of the camera base 10 and the circuit board 20, and also includes a camera 40. The camera 40 is connected to the base 10. The boss 11 on the base 10 matches the fixing groove 21 on the PCB, which improves the assembly accuracy of the base 10 and the circuit board 20, and is convenient for dispensing glue, thereby increasing the bonding strength of the glue layer 30 bonding the base 10 and the PCB, making the connection between the base 10 and the PCB more reliable. In addition, the side of the camera 40 is provided with an external thread, and the camera 40 and the base 10 are screwed together through the external thread and the internal thread, so as to be more stably connected together.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A fixing structure of a camera base and a circuit board, characterized in that: include: Base, circuit board and glue layer; A fixing groove is provided on the circuit board, a boss is provided at the bottom position where the base is plugged into the fixing groove, the base and the circuit board are positioned by the fixing groove and the boss, and the glue layer is coated between the fixing groove and the boss to fix the base and the circuit board.

2. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: The circuit board is a PCB.

3. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: An installation cavity is arranged in the base, and an inner wall of the installation cavity is arranged with an internal thread.

4. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: The boss is in the shape of a letter "I".

5. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: The cross section of the fixing groove along the width direction is an isosceles trapezoid.

6. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: A first limiting rib is arranged in the fixing groove, and a second limiting rib is arranged on the abutting surface of the boss with the fixing groove to limit the position of the first limiting rib.

7. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: The base is a plastic base.

8. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: The width of the fixing groove ranges from 0.25 mm to 0.35 mm, and the width of the boss ranges from 0.2 mm to 0.3 mm.

9. The fixing structure of the camera base and the circuit board according to claim 1, characterized in that: The depth of the fixing groove ranges from 0.4 mm to 0.6 mm, and the height of the boss ranges from 0.3 mm to 0.5 mm.

10. A camera module, comprising the fixing structure of the camera base and the circuit board according to any one of claims 1 to 9, characterized in that: It also includes a camera, which is connected to the base.

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