Vehicle-mounted camera

Abstract

The embodiment of the utility model provides a vehicle-mounted camera. The vehicle-mounted camera comprises a shell, wherein one end of the shell is provided with a mounting hole and the other end of the shell is provided with an opening; the PCB is arranged in the shell through the opening and shields an inner end hole opening of the mounting hole, and a photosensitive chip is arranged on the plate surface of one side, facing the mounting hole, of the PCB; the lens is assembled in the mounting hole of the shell through an active focusing process, the outer wall of the middle section of the lens protrudes outwards in the radial direction to form an outer protruding ring, and after the lens and the photosensitive chip are actively focused, the outer protruding ring adheres and is fixed to the periphery of an outer end hole opening of the mounting hole through first sealing glue; a glue injection hole penetrating through the PCB is further formed in the gap between the outer side wall of the inner end, right facing the lens, of the PCB and the mounting hole, and the gap is filled with second sealant which is injected through the glue injection hole and then solidified. According to the embodiment of the invention, the connection stability of the lens and the shell can be improved on the premise of not changing the assembly process of the lens.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted camera equipment technology, and in particular to a vehicle-mounted camera. Background Technology

[0002] An existing vehicle-mounted camera includes a housing with a mounting hole at one end, a PCB board assembled inside the housing with a photosensitive chip on its side facing the mounting hole, and a lens passing through the mounting hole with its focus on the center of the photosensitive chip. The lens has a radially outwardly convex ring formed on its middle section outer wall. In actual assembly, the PCB board is typically fixed inside the housing first. Then, the lens is inserted into the mounting hole and focused on the photosensitive chip on the PCB board using active focusing. Finally, the outer ring is bonded and fixed to the housing using the outer ring and / or a sealant pre-applied to the periphery of the mounting hole's outer end.

[0003] During implementation, the inventors discovered that because the sealant is directly exposed, it is prone to aging and deterioration in the long-term harsh vehicle environment, which can lead to poor connection stability between the lens and the housing, or even detachment. Moreover, after the lens and the housing are bonded and fixed with sealant, the space between the outer wall of the lens and the wall of the mounting hole is relatively closed, making it impossible to add other connection measures between the lens and the housing. Therefore, other methods of lens installation must be selected, which increases the assembly cost. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a vehicle-mounted camera that can improve the connection stability between the lens and the housing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vehicle-mounted camera, comprising:

[0006] A housing with a mounting hole at one end and an opening at the other end;

[0007] A PCB board, inserted into the housing through the opening and covering the inner end opening of the mounting hole, has a photosensitive chip on the side of the PCB board facing the mounting hole; and

[0008] The lens is assembled in the mounting hole of the housing using an active focusing process. The outer wall of the middle section of the lens has a radially outward protrusion forming an outer protrusion ring. After the lens and the photosensitive chip are actively focused, the outer protrusion ring is used to bond and fix the lens to the periphery of the outer end opening of the mounting hole with the help of a first sealant.

[0009] A glue injection hole is also provided in the gap between the inner outer wall of the lens and the wall of the mounting hole on the PCB board, and the gap is filled with a second sealant that is injected through the glue injection hole and then cured.

[0010] Furthermore, the injection hole is also sealed by a corresponding sealing plug.

[0011] Furthermore, the sealing plug includes a plunger portion inserted into the glue injection hole and an outer cover portion located on the side of the PCB board away from the lens, which completely covers the glue injection hole and its surrounding area and is integrally connected with the plunger portion.

[0012] Furthermore, the sealing plug is formed by injecting a third sealant into the injection hole and allowing it to overflow and solidify.

[0013] Furthermore, the third sealant overflows into the gap between the side of the PCB board and the inner wall of the housing and cures to form an adhesive part that is used to bond and position the side of the PCB board and the housing. The adhesive part is integrated with the outer cover.

[0014] Furthermore, the outer end of the mounting hole has a corresponding radial inward protrusion to form an inner ring edge, and the outer protruding ring on the lens is bonded and fixed to the inner ring edge by the first sealant.

[0015] Furthermore, the inner wall of the housing is provided with positioning steps for supporting and positioning the PCB board.

[0016] Furthermore, the positioning step is provided with a positioning pin, and the PCB board is provided with a corresponding positioning hole for inserting the positioning pin so that the PCB board is installed into the housing at a predetermined angle.

[0017] Furthermore, the housing includes a front shell and a rear cover that interlock to form an accommodating space. The mounting hole and the opening are both provided on the front shell. The rear cover is assembled at the opening of the front shell and correspondingly covers the opening. An internal connector is assembled on the side of the PCB board facing the rear cover. The rear cover is provided with a through hole corresponding to the internal connector for an external connector to pass through and mate with the internal connector.

[0018] Furthermore, the cross-section of the injection hole is adapted to the cross-section of the needle used for injection.

[0019] After adopting the above technical solution, the present utility model embodiment has at least the following beneficial effects: Since the PCB board will block the inner end opening of the mounting hole after assembly, by opening an injection hole on the PCB board, with the injection hole facing the gap between the inner end outer wall of the lens and the wall of the mounting hole, after the lens is assembled, the assembler can inject a second sealant into the gap through the injection hole on the PCB board. After curing, the gap can be sealed and the lens and housing can be connected accordingly. Moreover, the second sealant in the gap will not be exposed and is not prone to aging and failure, thereby enabling the lens to be effectively bonded and installed in the mounting hole of the housing for a long time, effectively ensuring the long-term stable imaging quality of the vehicle camera. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the split structure of an optional embodiment of the vehicle-mounted camera of this utility model.

[0021] Figure 2 This is a schematic diagram of the assembly structure of an optional embodiment of the vehicle-mounted camera of this utility model.

[0022] Figure 3 This is a cross-sectional view of an optional embodiment of the vehicle-mounted camera of this utility model before filling with the second sealant.

[0023] Figure 4 This is a schematic cross-sectional view of an optional embodiment of the vehicle-mounted camera of this utility model after filling with a third sealant.

[0024] Figure 5 This is a schematic diagram of the disassembled rear cover of an optional embodiment of the vehicle-mounted camera of this utility model.

[0025] Figure 6 This is a schematic diagram of the rear cover assembly of an optional embodiment of the vehicle-mounted camera of this utility model. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present utility model and are not intended to limit the present utility model. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0027] like Figures 1-4 As shown, an optional embodiment of this utility model provides a vehicle-mounted camera, including:

[0028] A housing 1 with a mounting hole 10 at one end and an opening 12 at the other end;

[0029] A PCB board 3, inserted into the housing 1 through the opening 12 and covering the inner end opening of the mounting hole 10, has a photosensitive chip 30 on the side of the PCB board 3 facing the mounting hole 10; and

[0030] The lens 5 is assembled in the mounting hole 10 of the housing 1 using an active focusing process. The outer wall of the middle section of the lens 5 has a radially protruding outer ring 50. After the lens 5 and the photosensitive chip 30 are actively focused, the outer ring 50 is bonded and fixed to the periphery of the outer end opening of the mounting hole 10 by the first sealant 52.

[0031] A glue injection hole 32 is also provided on the PCB board 1 at the gap 101 between the inner end outer wall of the lens 5 and the mounting hole 10, which is through the PCB board 1. The gap 101 is filled with a second sealant 103 that is injected through the glue injection hole 32 and then cured.

[0032] In this embodiment of the invention, since the PCB board 3 will block the inner end opening of the mounting hole 10 after assembly, an injection hole 32 is opened on the PCB board 3. The injection hole 32 is directly opposite the gap 101 between the inner end outer wall of the lens 5 and the hole wall of the mounting hole 10. After the lens 5 is assembled, the assembler can inject the second sealant 103 into the gap 101 through the injection hole 32 on the PCB board 3. After curing, the gap 101 can be sealed and the lens 5 and the housing 1 can be connected accordingly. Moreover, the second sealant 103 in the gap 101 will not be exposed to the outside and is not prone to aging and failure. Thus, the lens 5 can be effectively and permanently bonded and installed in the mounting hole 10 of the housing 1, effectively ensuring the long-term stable imaging quality of the vehicle camera.

[0033] In one optional embodiment of this utility model, such as Figures 1-4 As shown, the injection hole 32 is also sealed by a corresponding sealing plug 34. In this embodiment, the injection hole 32 is also sealed by the sealing plug 34, so that the space between the PCB board 3 and the lens 5 is relatively sealed. External moisture and foreign objects will not enter the space through the injection hole 32. On the one hand, this can protect the internal circuit and the second sealant 103. On the other hand, it can also prevent moisture or foreign objects from affecting the optical path between the lens 5 and the photosensitive chip 30 on the PCB board 3, thus ensuring stable imaging quality.

[0034] In one optional embodiment of this utility model, such as Figure 4As shown, the sealing plug 34 includes a plunger portion 341 inserted into the glue injection hole 32 and an outer cover portion 343 located on the side of the PCB board 3 facing away from the lens 5, completely covering the glue injection hole 32 and its surrounding area, and integrally connected with the plunger portion 341. In this embodiment, in addition to the plunger portion 341 inserted into the glue injection hole 32, the sealing plug 34 also includes an outer cover portion 343 that completely covers the glue injection hole 32 and its surrounding area. This not only improves the sealing effect of the glue injection hole 32, but also prevents the plunger portion 341 from falling into the space between the PCB board 3 and the lens 5. It also facilitates the removal of the sealing plug 34 by performing relevant operations on the outer cover portion 343 when necessary.

[0035] In one optional embodiment of this utility model, such as Figure 4 As shown, the sealing plug 34 is formed by injecting a third sealant into the injection hole 32 and allowing it to overflow and cure. In this embodiment, the sealing plug 34 is formed by injecting and curing a third sealant, which is a simple molding process and provides a good sealing effect.

[0036] In one optional embodiment of this utility model, such as Figure 4 As shown, the third sealant also overflows into the gap between the side of the PCB board 3 and the inner wall of the housing 1 and cures to form an adhesive portion 345 that corresponds to the bonding and positioning of the side of the PCB board 3 and the housing 1. The adhesive portion 345 is integrally connected with the outer cover portion 343. In this embodiment, the adhesive portion 345 formed by the overflow of the third sealant is used to correspondingly bond and position the side of the PCB board 3 and the housing 1, which can assist in the positioning of the PCB board 3.

[0037] In one optional embodiment of this utility model, such as Figure 3 and Figure 4 As shown, an inner ring edge 105 is formed by radially protruding inward at the outer end opening of the mounting hole 10. The outer convex ring 50 on the lens 5 is bonded and fixed to the inner ring edge 105 by the first sealant 52. In this embodiment, by forming an inner ring edge 105 at the outer end opening of the mounting hole 10, the bonding area between the outer end face of the mounting hole 10 and the first sealant 52 can be effectively increased, thereby improving the bonding and positioning effect with the outer convex ring 50 of the lens 5.

[0038] In one optional embodiment of this utility model, such as Figures 3-4 As shown, the inner wall of the housing 1 is provided with a positioning step 14 for supporting and positioning the PCB board 3. In this embodiment, the positioning step 14 is also provided to facilitate the housing 1 in supporting and positioning the PCB board 3.

[0039] In one optional embodiment of this utility model, such as Figure 1As shown, the positioning step 14 is provided with a positioning pin 141, and the PCB board 3 is provided with a corresponding positioning hole 35 for inserting the positioning pin 141 so that the PCB board 3 is installed into the housing 1 at a predetermined angle. In this embodiment, by setting the positioning pin 141 and the positioning hole 35 to be mutually inserted and cooperated, not only can the PCB board 3 be initially positioned, but the PCB board 3 can also be installed at a predetermined angle during assembly, ensuring that the position of the photosensitive chip 5 and the lens 5 on the PCB board 3 correspond.

[0040] In one optional embodiment of this utility model, such as Figure 5 and Figure 6 As shown, the housing 1 includes a front shell 15 and a rear cover 16 that interlock to form a receiving space. The mounting hole 10 and the opening 12 are both provided on the front shell 15. The rear cover 16 is assembled at the opening 12 of the front shell 15 and correspondingly covers the opening 12. An internal connector 36 is assembled on the side of the PCB board 3 facing the rear cover 16. The rear cover 16 has a through hole 161 corresponding to the internal connector 36 for an external connector 18 to pass through and mate with the internal connector 36. In this embodiment, the housing 1 includes a front shell 15 and a rear cover 16. When the PCB board 3 is installed in the front shell 15, the opening 12 can be covered by the rear cover 16, ensuring the airtightness of the housing 1 and protecting the internal structure. Furthermore, by providing the internal connector 36 to mate with the external connector 46 through the through hole 161, it facilitates the signal and circuit connection between the vehicle camera and external devices.

[0041] In an optional embodiment of this invention, the cross-section of the injection hole 32 is adapted to the cross-section of the needle used for injection. In this embodiment, by setting the cross-section of the injection hole 32 to match the cross-section of the injection needle, it is convenient for the injection needle to pass through the injection hole 32 to inject adhesive. For example, both the injection hole 32 and the needle have circular cross-sections, and the diameter of the injection hole 32 is slightly larger than the outer diameter of the needle.

[0042] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present invention.

Claims

1. A vehicle-mounted camera, comprising: A housing with a mounting hole at one end and an opening at the other end; A PCB board, inserted into the housing through the opening and covering the inner end opening of the mounting hole, has a photosensitive chip on the side of the PCB board facing the mounting hole; and The lens is assembled in the mounting hole of the housing using an active focusing process. The outer wall of the middle section of the lens has a radially outward protrusion forming an outer protrusion ring. After the lens and the photosensitive chip are actively focused, the outer protrusion ring is used to bond and fix the lens to the periphery of the outer end opening of the mounting hole with the help of a first sealant. The feature is that an injection hole penetrating the PCB board is provided in the gap between the inner outer wall of the lens and the wall of the mounting hole, and the gap is filled with a second sealant injected through the injection hole and then cured.

2. The vehicle-mounted camera as described in claim 1, characterized in that, The injection hole is also sealed by a corresponding sealing plug.

3. The vehicle-mounted camera as described in claim 2, characterized in that, The sealing plug includes a plunger portion inserted into the glue injection hole and an outer cover portion located on the side of the PCB board away from the lens, which completely covers the glue injection hole and its surrounding area and is integrally connected with the plunger portion.

4. The vehicle-mounted camera as described in claim 3, characterized in that, The sealing plug is formed by injecting a third sealant into the injection hole and allowing it to overflow and solidify.

5. The vehicle-mounted camera as described in claim 4, characterized in that, The third sealant also overflows into the gap between the side of the PCB board and the inner wall of the housing and cures to form an adhesive part that is used to bond and position the side of the PCB board and the housing. The adhesive part is integrated with the outer cover.

6. The vehicle-mounted camera as described in claim 1, characterized in that, The outer end of the mounting hole convexes radially inward to form an inner ring edge, and the outer convex ring on the lens is bonded and fixed to the inner ring edge by the first sealant.

7. The vehicle-mounted camera as described in claim 1, characterized in that, The inner wall of the housing is provided with positioning steps for supporting and positioning the PCB board.

8. The vehicle-mounted camera as described in claim 7, characterized in that, The positioning step is provided with a positioning pin, and the PCB board is provided with a corresponding positioning hole for inserting the positioning pin so that the PCB board is installed into the housing at a predetermined angle.

9. The vehicle-mounted camera as described in claim 1, characterized in that, The housing includes a front shell and a rear cover that interlock to form a receiving space. The mounting hole and the opening are both provided on the front shell. The rear cover is assembled at the opening of the front shell and covers the opening accordingly. An internal connector is assembled on the side of the PCB board facing the rear cover. The rear cover is provided with a through hole corresponding to the internal connector for an external connector to pass through and mate with the internal connector.

10. The vehicle-mounted camera as described in claim 1, characterized in that, The cross-section of the injection hole is adapted to the cross-section of the needle used for injection.

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