Vehicle-mounted camera

Abstract

The invention provides a vehicle-mounted camera, which comprises a first shell, a second shell, a circuit module, a lens module and a shielding cover group, and is characterized in that one side of the first shell is provided with an opening which is communicated with the outside; the second shell and the first shell are mutually connected to form a cavity inside for bearing the circuit module; the circuit module is positioned in the cavity and is adjacent to the lens module; the lens module is located in the first shell, and the shielding cover set is located in the cavity and used for fixing the circuit module. According to the vehicle-mounted camera provided by the invention, the circuit module is divided into three sections of rigid circuit boards and two sections of flexible circuit boards, so that the use space of the circuit module is reduced, and the occupied space of the vehicle-mounted camera is saved; and meanwhile, the size of the rigid circuit board and the size of the flexible circuit board which are respectively processed are unified by utilizing the proportion of the circuit module and the vehicle-mounted camera, so that unified installation after processing is realized, the assembly cost is reduced, and the vehicle-mounted camera module is suitable for vehicle-mounted cameras of various specifications.

Description

Technical Field

[0001] This invention relates to a vehicle-mounted camera. Background Technology

[0002] Nowadays, in-vehicle cameras are widely used by car manufacturers. They can monitor and record the in-vehicle environment and driver's cabin conditions in real time, effectively improving the safety of the cabin. However, as vehicles become more and more intelligent, cameras are required to be more and more intelligent and smaller in size. For traditional cameras, the smaller the size, the less they can accommodate high-performance PCB circuit boards. Therefore, based on existing technology, manufacturers have designed multiple PCB board combination structures to reduce the space required for cameras.

[0003] This multi-board PCB structure is achieved using a rigid-flex board, which is a circuit board containing one or more rigid areas and one or more flexible areas. The original form of the internal PCBA, which was divided into three PCBAs, is replaced by a rigid-flex board with three rigid areas and two flexible areas. The board-to-board connectors used to connect the PCBAs are eliminated, freeing up the space of the original PCBA board-to-board connectors.

[0004] This structure does reduce the space required compared to traditional cameras. However, under this manufacturing process, rigid PCB areas and flexible FPC areas are first fabricated separately. Then, the circuit patterns of each layer are stacked according to the design, aligned, and then bonded together at the corresponding positions using adhesives under high temperature and pressure to achieve board production.

[0005] Under the existing manufacturing process, the PCB board production process causes a mismatch between the size and area of ​​the PCB area and the FPC area, resulting in a disproportionate PCB board during the final assembly process. Moreover, it is impossible to adjust the size of the PCB board during assembly for different camera specifications. Therefore, it is necessary to determine the proportional relationship during production. However, since the sizes of different PCB boards are not the same, it is impossible to determine them uniformly. Targeting only different product models would greatly increase production costs. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a vehicle-mounted camera that changes the traditional PCB board structure by using the interconnection of rigid and flexible areas to reduce assembly space, and at the same time using the ratio of the length of the flexible circuit board to the length of the rigid circuit board and the assembly space size to coordinate the later installation, so as to ensure that all parts can be installed uniformly after production.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A vehicle-mounted camera includes a first housing, a second housing, a circuit module, a lens module, and a shielding cover assembly. The first housing has an opening on one side, connecting outwards. The second housing and the first housing are connected to form a cavity, which houses the circuit module. The circuit module is located within the cavity, adjacent to the lens module. The lens module is located within the first housing, with a portion of it protruding from the opening of the first housing and extending inwards into the cavity, connecting with the circuit module. The shielding cover assembly is located within the cavity and outside the circuit module, used to fix the circuit module. The circuit module includes a first rigid circuit board, a second rigid circuit board, and a third rigid circuit board; a first flexible circuit board is disposed between the first rigid circuit board and the second rigid circuit board, and a second flexible circuit board is disposed between the second rigid circuit board and the third rigid circuit board; the first flexible circuit board and the second flexible circuit board are symmetrically distributed on the upper and lower parts of the two sides of the three rigid circuit boards. The vehicle-mounted camera has a total height, determined by the product specifications, which is the distance from the top of the vehicle-mounted camera to its bottom; the distance between the first rigid circuit board and the second rigid circuit board is set to a first distance, which is 11%-13% of the total height.

[0008] Furthermore, the length of the first flexible circuit board is set to 128%-145% of the first pitch.

[0009] Furthermore, the vertical distance between the upper surface of the first rigid circuit board and the end of the first housing is set as a second gap, which is 40%-70% of the length of the first flexible circuit board.

[0010] Furthermore, the vertical distance between the upper surface of the second rigid circuit board and the end of the first housing is set to a third spacing of 2.5-5mm.

[0011] Furthermore, the shielding cover group comprises three shielding covers, corresponding to the three rigid circuit boards, namely a first shielding cover, a second shielding cover, and a third shielding cover; the first shielding cover corresponds to the first rigid circuit board, and its internal depth is 12% to 15% of the total height; the second shielding cover corresponds to the second rigid circuit board, and its internal depth is 12% to 13.88% of the total height; the third shielding cover corresponds to the third rigid circuit board, and its internal depth is 17.2% to 23.2% of the total height.

[0012] Furthermore, a connection slot is provided on one side of the first rigid circuit board for connection with the first flexible circuit board.

[0013] Furthermore, the second rigid circuit board has connection slots on both sides, which are respectively connected to the first flexible circuit board and the second flexible circuit board.

[0014] Furthermore, a connection slot is provided on one side of the third rigid circuit board, which is connected to the second flexible circuit board.

[0015] Furthermore, the length of the second flexible circuit board is 128%-145% of the first pitch.

[0016] Furthermore, the internal depth of the second outer shell is 35% to 41% of the total height.

[0017] Compared with the prior art, the vehicle-mounted camera provided by the present invention reduces the space used by dividing the circuit module into three rigid circuit boards and two flexible circuit boards, thus saving the space occupied by the camera. At the same time, by utilizing the ratio of the circuit module to the vehicle-mounted camera, the dimensions of the separately processed rigid circuit boards and flexible circuit boards are unified, realizing unified installation after processing, reducing assembly costs, and applicable to products of various specifications. Attached Figure Description

[0018] Figure 1 This is an exploded view of the structure of the present invention.

[0019] Figure 2 This is a cross-sectional view of the present invention.

[0020] Among them: 2. Circuit module, 3. Lens module, 4. Shielding cover assembly, 5. First shell, 6. Second shell, 7. First rigid circuit board, 8. Second rigid circuit board, 9. Third rigid circuit board, 10. First flexible circuit board, 11. Second flexible circuit board, 12. Connecting bayonet, 13. First shielding cover, 14. Second shielding cover, 15. Third shielding cover, L. Total height, L1. First spacing, L2. Second spacing, L3. Third spacing. Detailed Implementation

[0021] In one embodiment, such as Figure 1 and 2As shown, a vehicle-mounted camera includes a first housing 5, a second housing 6, a circuit module 2, a lens module 3, and a shielding cover assembly 4. The first housing 5 has an opening on one side, connecting outwards. The second housing 6 is connected to the first housing 5 to form a cavity, which carries the circuit module 2. The circuit module 2 is located inside the cavity, adjacent to the lens module 3. The lens module 3 is located inside the first housing 5, with part of it protruding from the opening of the first housing 5 and the remainder extending inwards into the cavity, connecting with the circuit module 2. The shielding cover assembly 4 is located in the cavity and above the circuit module 2, used to fix the circuit module 2. The circuit module 2 includes three rigid circuit boards and two flexible circuit boards, namely a first rigid circuit board 7, a second rigid circuit board 8, and a third rigid circuit board 9; a first flexible circuit board 10 is disposed between the first rigid circuit board 7 and the second rigid circuit board 8, and a second flexible circuit board 11 is disposed between the second rigid circuit board 8 and the third rigid circuit board 9; the first flexible circuit board 10 and the second flexible circuit board 11 are symmetrically distributed on the upper and lower parts of both sides of the circuit module 2. The total height of the vehicle-mounted camera is set to L, which can be determined according to product specifications. In this embodiment, the total height L is from the top of the vehicle-mounted camera to the bottom of the vehicle-mounted camera, and the circuit module 2 is placed in the cavity of the first housing 5 and the second housing 6. The distance between the first rigid circuit board 7 and the second rigid circuit board 8 is set to a first distance L1, which is 11%-13% of the total height L.

[0022] In one embodiment, the length of the first flexible circuit board 10 is set to 128%-145% of the first pitch L1 of the first rigid circuit board 7; the vertical distance between the lower surface of the first rigid circuit board 7 and the end of the first housing 5 is set to a second pitch L2, which is 40%-70% of the length of the first flexible circuit board 10; the vertical distance between the upper surface of the second rigid circuit board 8 and the end of the first housing 5 is set to a third pitch L3, which is 2.5-5mm.

[0023] In one embodiment, three shielding covers 4 are provided, corresponding to the three rigid circuit boards; the shielding cover group is provided with three shielding covers, corresponding to the three rigid circuit boards, namely a first shielding cover 13, a second shielding cover 14, and a third shielding cover 15; the first shielding cover 13 corresponds to the first rigid circuit board 7, and its depth is 12% to 15% of the total height L; the second shielding cover 14 corresponds to the second rigid circuit board 8, and its depth is 12% to 13.88% of the total height L; the third shielding cover 15 corresponds to the third rigid circuit board 9, and its depth is 17.2% to 23.2% of the total height L.

[0024] In one embodiment, the first rigid circuit board 7 has a connection slot 12 on one side, which is connected to the first flexible circuit board 10; the second rigid circuit board 8 has connection slots 12 on both sides, which are connected to the first flexible circuit board 10 and the second flexible circuit board 11 respectively; and the third rigid circuit board 9 has a connection slot 12 on one side, which is connected to the second flexible circuit board 11.

[0025] In one embodiment, the length of the second flexible circuit board 11 is the same as the length of the first flexible circuit board 10; the distance between the second rigid circuit board 8 and the third rigid circuit board 9 is the same as the first spacing L1.

[0026] In one embodiment, the overall dimensions are 23mm x 23mm x 45mm, i.e., the total height L is 45mm. The external dimensions of the circuit module 2 are 18.6mm x 18.6mm x 1.6mm. The first spacing L1 between the first rigid circuit board 7 and the second rigid circuit board 8 is 5.5mm, and the optional size ratio is 11.11% to 13% of the total height L. When assembling the first rigid circuit board 7 and the lens module 2 into the first housing 5, to avoid obstruction by the second rigid circuit board 8 and the third rigid circuit board 9, the length of the first flexible circuit board 10 needs to be controlled so that the second rigid circuit board 8 and the third rigid circuit board 9 can be placed on the outside of the first housing 5. The internal depth of the first housing 5 is 5.5mm, and the optional size ratio is 10% to 13% of the overall total height L. The length of the first flexible circuit board 10 is 8m, and the optional size ratio is 128% to 145% of the first spacing L1. The optimal configuration is that after placing the second rigid circuit board 8 and the third rigid circuit board outside the first housing 5, the outer wall end of the first housing 5 is positioned at the centerline of the first flexible circuit board 10. A possible position is a 0.5mm offset to the left or right of the centerline of the first flexible circuit board 10, representing -10% to 10% of the first spacing L1. To facilitate subsequent shielding cover nesting assembly, the height of the first shielding cover 13 needs to be slightly greater than the depth of the first housing 5, so that the first shielding cover 13 protrudes from the first housing 5 after assembly. The height of the first shielding cover 13 is 6.4mm, with a possible size ratio of 12% to 15% of the total height L. The height of the second shielding cover 14 is 5.9mm, with a possible size ratio of 12% to 13.88% of the total height L. Similarly, to avoid the third rigid circuit board 9 obstructing the assembly of the shielding cover group 4 and the second rigid circuit board 7, the length of the second flexible circuit board 11 needs to be controlled so that the third rigid circuit board 9 can be placed outside the second shielding cover 14 by bending. The length of the second flexible circuit board 11 is 8m, and the optional proportion is the same as that of the first flexible circuit board 10. The optimal state is that the second shielding cover 14 is located at the center line of the second flexible circuit board 10. The optional position is that the center line of the second flexible circuit board 11 is offset to the left or right by 0.5mm, and the optional proportion is the same as that of the first flexible circuit board 10. The height of the third shielding cover 15 is 8.8mm, and the optional size proportion is 17.2% to 23.2% of the total height L. The internal depth of the second outer shell 6 is 16.85mm, and the optional size proportion is 35% to 41% of the total height L.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A vehicle-mounted camera, comprising a first housing, a second housing, a circuit module, a lens module, and a shielding assembly; the first housing has an opening on one side, communicating outwards; the second housing and the first housing are connected to form a cavity; the circuit module is located within the cavity, adjacent to the lens module; the lens module is located within the first housing, with a portion of the lens module protruding from the opening of the first housing and extending inwards into the cavity, connecting to the circuit module; the shielding assembly is located within the cavity and simultaneously outside the circuit module, for fixing the circuit module; The circuit module includes a first rigid circuit board, a second rigid circuit board, a third rigid circuit board, a first flexible circuit board, and a second flexible circuit board; the first flexible circuit board is disposed between the first rigid circuit board and the second rigid circuit board, and the second flexible circuit board is disposed between the second rigid circuit board and the third rigid circuit board; the first flexible circuit board and the second flexible circuit board are symmetrically distributed on both sides of the circuit module. Its features are, The vehicle-mounted camera has a total height; there is a first gap between the first rigid circuit board and the second rigid circuit board; the length of the first flexible circuit board is set to 128%-145% of the first gap; the vertical distance between the upper surface of the first rigid circuit board and the end of the first housing is set to a second gap, which is 40%-70% of the length of the first flexible circuit board.

2. The vehicle-mounted camera according to claim 1, characterized in that, The first spacing is 11%-13% of the total height.

3. A vehicle-mounted camera according to claim 1, characterized in that, The vertical distance between the upper surface of the second rigid circuit board and the end of the first housing is set to a third spacing of 2.5-5mm.

4. A vehicle-mounted camera according to claim 1, characterized in that, The shielding cover group comprises three shielding covers, corresponding to the three rigid circuit boards, namely a first shielding cover, a second shielding cover, and a third shielding cover; the first shielding cover corresponds to the first rigid circuit board, and its internal depth is 12% to 15% of the total height; the second shielding cover corresponds to the second rigid circuit board, and its internal depth is 12% to 13.88% of the total height; the third shielding cover corresponds to the third rigid circuit board, and its internal depth is 17.2% to 23.2% of the total height.

5. A vehicle-mounted camera according to claim 1, characterized in that, The first rigid circuit board has a connection slot on one side for connection with the first flexible circuit board.

6. A vehicle-mounted camera according to claim 1, characterized in that, The second rigid circuit board has connection slots on both sides, which are respectively connected to the first flexible circuit board and the second flexible circuit board.

7. A vehicle-mounted camera according to claim 1, characterized in that, The third rigid circuit board has a connection slot on one side, which is connected to the second flexible circuit board.

8. A vehicle-mounted camera according to claim 1, characterized in that, The internal depth of the second outer shell is 35% to 41% of the total height.

Images