Vehicle-mounted camera

Abstract

The embodiment of the utility model provides a vehicle-mounted camera, which comprises a shell, a circuit board and a wire harness assembly, one end of the shell is provided with a through hole, the circuit board and the wire harness assembly are assembled in the shell, and the wire harness assembly comprises a multi-core cable; the crimping ring is crimped and fixed at a position close to one end of the multi-core cable; the cable core fixing seat is provided with a plurality of threading holes, the cable skin of the section, located between the crimping ring and the tail end face of the adjacent end of the multi-core cable, of the multi-core cable is stripped, and all cable cores in the multi-core cable penetrate through the threading holes in a one-to-one correspondence mode; the embedded rubber-coated seat is formed at one end of the multi-core cable through secondary injection molding and wraps the crimping ring and one end, close to the crimping ring, of the wire core fixing seat; one end, far away from the crimping ring, of the wire core fixing seat extends out of the embedded rubber-coated seat to form an exposed end; the wire harness assembly covers an outer hole opening of the through hole in a sealed mode through the embedded rubber coating base and is fixed to the outer side wall of the shell, and the tail ends of all the wire cores are correspondingly welded to a preset welding part on the circuit board. According to the embodiment, the sealing performance and the tensile performance can be effectively improved.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of vehicle accessories, and particularly to a vehicle-mounted camera. Background Art

[0002] Existing vehicle-mounted cameras are usually connected to external devices through a wire harness assembly. Correspondingly, through holes are provided on the housing of the vehicle-mounted camera for the wire harness assembly to extend into the housing to be electrically connected to the circuit board assembled in the housing. The wire harness assembly and the circuit board are usually plugged and conducted through a female terminal connector and a male terminal connector.

[0003] However, existing vehicle-mounted cameras usually only assemble a rubber plug or a wire cover at the through hole of the housing to achieve simple waterproofing, and their sealing performance is poor. When a motor vehicle travels in various environments, external water vapor can easily enter the housing along the gaps between the wire harness and the rubber plug ( / wire cover) and between the rubber plug and the hole wall of the through hole (or between the wire cover and the peripheral edge of the outer end of the through hole), thereby having an adverse effect on the internal circuit and seriously affecting the normal operation of the vehicle-mounted camera. In addition, during the driving of the motor vehicle, the part of the wire harness assembly outside the housing is prone to swinging, which will exert a pulling force on the female terminal connector, causing excessive wear or deformation of the female terminal connector and the male terminal connector, or even loosening, resulting in poor electrical connection stability. Summary of the Utility Model

[0004] The technical problem to be solved by the embodiments of the present utility model is to provide a vehicle-mounted camera with effective improved sealing performance and strong tensile strength.

[0005] To solve the above technical problem, the embodiments of the present utility model provide the following technical solutions: A vehicle-mounted camera includes a housing with a through hole at one end, a circuit board assembled in the housing, and a wire harness assembly with one end passing through the through hole and electrically connected to the circuit board while the other end is used to connect to an external device. The wire harness assembly includes:

[0006] A multi-core cable;

[0007] A crimping ring crimped and fixed at a position close to one end of the multi-core cable;

[0008] A wire core fixing seat provided with a plurality of wire passing holes. The section of the multi-core cable between the crimping ring and the end face of the adjacent end of the multi-core cable is stripped of the wire skin, and each of the internal wire cores passes through the wire passing holes correspondingly; and

[0009] An embedded encapsulation seat formed by secondary injection molding at one end of the multi-core cable and wrapping the crimping ring and one end of the wire core fixing seat adjacent to the crimping ring. The end of the wire core fixing seat far from the crimping ring extends outside the embedded encapsulation seat to form an exposed end;

[0010] The exposed end of the wire core fixing seat of the wire harness assembly is inserted into the through hole of the housing, and the buried rubber coating seat seals and covers the outer orifice of the through hole and is fixed to the outer wall of the housing. The ends of the wire cores extending through the wire core fixing seat are respectively welded to the preset welding parts on the circuit board.

[0011] Furthermore, a first sealant for sealing the gap between the hole wall of the wire passing hole and the wire core is filled in each of the wire passing holes.

[0012] Furthermore, an annular baffle is formed on the inner wall of the housing around the through hole. A glue dispensing groove is formed on the inner side of the annular baffle. The circuit board is received in the glue dispensing groove. A second sealant for sealing the inner orifice of the through hole and covering the circuit board is filled in the glue dispensing groove.

[0013] Furthermore, the circuit board is a flexible FPC board. One side of the end of the flexible FPC board provided with the welding parts is attached to the exposed end face of the wire core fixing seat and is welded and fixed to the wire cores one by one by the welding parts. The second sealant correspondingly covers the welding parts of the flexible FPC board and the wire cores. The other end of the flexible FPC board passes through the second sealant and forms an FPC cable.

[0014] Furthermore, the welding part includes a jack penetrating through the circuit board and a solder pad formed on the surface of the circuit board around the jack. The end part of the wire core passes through the jack and is welded and fixed to the solder pad.

[0015] Furthermore, positioning holes are provided on the circuit board, and positioning convex columns for inserting and mating with the positioning holes to align the jacks with the wire cores one by one are provided on the outer end face of the wire core fixing seat.

[0016] Furthermore, convex ears are symmetrically protruded from both sides of the bottom end of the buried rubber coating seat. Locking holes are provided on the convex ears. An annular embedding groove surrounding the wire core fixing seat is provided on the bottom end face of the buried rubber coating seat. A sealing washer with a top end protruding from the annular embedding groove is embedded in the annular embedding groove. Then, screws pass through the locking holes of the convex ears and are locked in the preset screw holes of the housing to fix the buried rubber coating seat to the outer wall of the housing. The sealing washer tightly abuts against the periphery of the through hole to seal the outer orifice of the through hole.

[0017] Furthermore, the outer contour of the cross section of the crimping ring is non-circular.

[0018] Further, a positioning rib is formed by the protrusion of the hole wall of the through hole, and a positioning groove for inserting and cooperating with the positioning rib so that the wire core fixing seat can be inserted into the through hole only at a predetermined angle is provided on the bottom side wall of the wire core fixing seat. Anti-detachment protrusions for preventing the wire core fixing seat from detaching from the embedded rubberized seat are respectively protruded from both side walls at the top end of the wire core fixing seat.

[0019] Further, the housing includes a front shell and a rear cover that are snap-fitted and hermetically connected to each other. The through hole is provided on the rear cover. The vehicle-mounted camera further includes a camera module assembled at one end inside the housing and extending out of the front shell. The end of the FPC cable is correspondingly inserted into the camera module.

[0020] After adopting the above technical solution, the embodiment of the present invention has at least the following beneficial effects: The wire harness assembly of the embodiment of the present invention includes a multi-core cable, a crimping ring, a wire core fixing seat, and an embedded rubberized seat. The crimping ring is crimped and fixed on the multi-core cable near one end to enhance the holding force between the wire cores of the multi-core cable. Then, each wire core inside the multi-core cable is correspondingly passed through the wire passing hole, and the exposed wire cores are positioned by the wire core fixing seat. Then, an embedded rubberized seat is formed by secondary injection molding at the end of the multi-core cable to wrap the crimping ring and one end of the wire core fixing seat adjacent to the crimping ring, realizing the sealing of each wrapped position, preventing water vapor from entering the housing through the gaps between various parts, and further enhancing the holding force between the wire cores. Then, the wire harness assembly is inserted into the through hole of the housing with the exposed end of the wire core fixing seat, positioning the wire harness assembly with the housing. At the same time, the outer hole of the through hole is hermetically covered by the embedded rubberized seat and fixed to the outer side wall of the housing. Finally, the ends of the respective wire cores extending through the wire core fixing seat are correspondingly welded to the preset welding parts on the circuit board. Using the welding method can not only achieve electrical connection but also realize the positioning of the ends of the wire cores, effectively improving the sealing performance and tensile strength. Description of the Drawings

[0021] Figure 1 It is a split structural schematic diagram of an optional embodiment of the vehicle-mounted camera of the present invention.

[0022] Figure 2 It is an assembly schematic diagram of an optional embodiment of the vehicle-mounted camera of the present invention.

[0023] Figure 3 It is a split-state structural schematic diagram of the wire harness assembly of an optional embodiment of the vehicle-mounted camera of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the wire harness assembly of an optional embodiment of the vehicle-mounted camera of the present invention after assembly.

[0025] Figure 5 Schematic diagram of the structure when the wire harness assembly of an alternative embodiment of the vehicle-mounted camera of the present utility model is assembled to the housing.

[0026] Figure 6 Schematic diagram of the structure when the second sealant is filled after the wire harness assembly of an alternative embodiment of the vehicle-mounted camera of the present utility model is assembled to the housing.

[0027] Figure 7 Schematic cross-sectional structure diagram of an alternative embodiment of the vehicle-mounted camera of the present utility model along the plane where the central axes of two wire cores are located.

[0028] Figure 8 Schematic cross-sectional structure diagram of an alternative embodiment of the vehicle-mounted camera of the present utility model along the central plane of the housing. Detailed implementation manners

[0029] 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, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0030] As Figures 1-7 shown, an alternative embodiment of the present utility model provides a vehicle-mounted camera, including a housing 1 with a through hole 10 at one end, a circuit board 3 assembled in the housing 1, and a wire harness assembly 5 with one end passing through the through hole 10 and electrically connected to the circuit board 3 and the other end for connecting to an external device. The wire harness assembly 5 includes:

[0031] A multi-core cable 50;

[0032] A crimping ring 52 crimped and fixed at a position near one end of the multi-core cable 5;

[0033] A wire core fixing seat 54, on which a plurality of wire passing holes 541 are provided. The section of the multi-core cable 50 between the crimping ring 52 and the end face of the adjacent end of the multi-core cable 50 is stripped of the wire skin, and each internal wire core 501 passes through the wire passing holes 541 in a one-to-one correspondence; and

[0034] An embedded encapsulation seat 56 formed by secondary injection molding at one end of the multi-core cable 50 and wrapping the crimping ring 52 and one end of the wire core fixing seat 54 adjacent to the crimping ring 52. The end of the wire core fixing seat 54 far from the crimping ring 52 extends outside the embedded encapsulation seat 56 to form an exposed end;

[0035] The wire harness assembly 5 has the exposed end of the wire core fixing base 54 inserted into the through hole 10 of the housing 1, and the outer hole opening of the through hole 10 is sealed and covered by the embedded rubber coating base 56 and fixed to the outer wall of the housing 1. The ends of the wire cores 501 extending through the wire core fixing base 54 are correspondingly welded to the preset welding parts 30 on the circuit board 3.

[0036] In the embodiment of the present utility model, the wire harness assembly 5 includes a multi-core cable 50, a crimping ring 52, a wire core fixing base 54, and an embedded rubber coating base 56. The crimping ring 52 is crimped and fixed to the multi-core cable 50 near one end to enhance the holding force between the wire cores 501 of the multi-core cable 50. Then, each of the wire cores 501 inside the multi-core cable 50 passes through the wire passing holes 541 one by one. The wire core fixing base 54 is used to position the exposed wire cores 501. Then, the embedded rubber coating base 56 is formed by secondary injection molding at the end of the multi-core cable 50 to wrap the crimping ring 52 and one end of the wire core fixing base 54 adjacent to the crimping ring 52, realizing the sealing of each wrapped position, preventing water vapor from entering the housing 1 through the gaps between various parts, and further enhancing the holding force between the wire cores 501. Then, the wire harness assembly 5 is inserted into the through hole 10 of the housing 1 with the exposed end of the wire core fixing base 54, positioning the wire harness assembly 5 and the housing 1. At the same time, the outer hole opening of the through hole 10 is sealed and covered by the embedded rubber coating base 56 and fixed to the outer wall of the housing 1. Finally, the ends of the wire cores 501 extending through the wire core fixing base 54 are correspondingly welded to the preset welding parts 30 on the circuit board 3. Using the welding method can not only achieve electrical connection but also realize the positioning of the ends of the wire cores 501, effectively improving the sealing performance and tensile strength.

[0037] In an alternative embodiment of the present utility model, as Figure 1 and Figure 7 shown, a first sealing glue 503 for sealing the gap between the hole wall of the wire passing hole 541 and the wire core 501 is further filled in each of the wire passing holes 541. In this embodiment, by further filling the first sealing glue 503 in the wire passing holes 541, the first sealing glue 503 can not only seal the gap between the wire passing hole 541 and the wire core 501, preventing external water vapor from entering the housing 1 through this gap, but also realize the stable fixation of the wire core 501 and the wire core fixing base 54, enhancing the tensile strength of the multi-core cable 50 and making the connection more stable.

[0038] In an alternative embodiment of the present utility model, as Figures 1-3 、 Figures 5-8As shown, an annular baffle 12 is further formed on the inner wall of the housing 1 around the through hole 10. A dispensing groove 14 is formed inside the annular baffle 12. The circuit board 3 is received in the dispensing groove 14. A second sealant 15 for sealing the inner end orifice of the through hole 10 and covering the circuit board 3 is further filled in the dispensing groove 14. In this embodiment, by further forming the dispensing groove 14 on the inner wall of the housing 1 around the through hole 10, receiving the circuit board 3 in the dispensing groove 14, the second sealant 15 filled in the dispensing groove 14 can not only seal the inner end orifice of the through hole 10 to achieve secondary sealing and waterproofing, but also cover the circuit board 3 to achieve the fixation of the circuit board 3.

[0039] In an alternative embodiment of the present utility model, as Figures 5 to 6 shown, the circuit board 3 is a flexible FPC board. One side of the end of the flexible FPC board 3 provided with the welding part 30 is attached to the exposed end face of the wire core fixing seat 54 and is welded and fixed to the wire cores 501 one by one by the welding part 30. The second sealant 15 correspondingly covers the welding parts of the flexible FPC board 3 and the wire cores 501. The other end of the flexible FPC board 3 passes out of the second sealant 15 and forms an FPC cable 32. By using the flexible FPC board as the circuit board 3, it has a thin thickness, is convenient to be assembled to the exposed end face of the wire core fixing seat 54 and welded and fixed to the respective wire cores 501, and is also beneficial to implement sealing by the second sealant 15. Moreover, the other end of the flexible FPC board forms an FPC cable 32 extending outside the second sealant 15, which is convenient to be docked with other circuit modules of the vehicle-mounted camera.

[0040] In an alternative embodiment of the present utility model, the welding part 30 includes a jack 301 penetrating through the circuit board 3 and pads 303 formed on the surface of the circuit board 3 around the jack 301. The end part of the wire core 501 passes through the jack 301 and is welded and fixed to the pads 303. In this embodiment, the welding part 30 adopts the combination of the jack 301 and the pads 303. During specific assembly, the end part of the wire core 501 can be directly passed through the jack 301 on the circuit board 3, and then the end part of the wire core 501 can be welded and fixed to the pads 303 on the periphery of the jack 301, and the operation is more convenient.

[0041] In an alternative embodiment of the present utility model, as Figures 1-3 、 Figures 5-6As shown, the circuit board 3 is provided with positioning holes 34, and the bottom end face of the wire core fixing seat 54 is provided with positioning studs 543 for inserting and mating with the positioning holes 34 so that the welding holes 30 are aligned with the wire cores 501 one by one. In this embodiment, the positioning studs 543 of the wire core fixing seat 54 are inserted and mated with the positioning holes 34, so that the wire cores 501 on the wire core fixing seat 54 can be aligned with the jacks 301 on the circuit board 3 one by one, which is convenient for assembly.

[0042] In an alternative embodiment of the present invention, as Figures 1-8 shown, convex ears 560 are symmetrically protruded from both sides of the bottom end of the embedded rubber-coated seat 56. Locking holes 562 are provided on the convex ears 560. The bottom end face of the embedded rubber-coated seat 56 is provided with an annular groove 564 around the wire core fixing seat 54. A sealing washer 566 with its top protruding from the annular groove 564 is embedded in the annular groove 564. Further, a screw 568 passes through the locking hole 564 of the convex ear 560 and is locked in a preset screw hole 16 of the housing 1 to fix the embedded rubber-coated seat 56 to the outer side wall of the housing 1. The sealing washer 566 tightly abuts against the periphery of the through hole 10 to seal the outer hole of the through hole 10. In this embodiment, the embedded rubber-coated seat 56 is locked to the outer side wall of the housing 1 by the screw 568, so that the sealing washer 566 tightly abuts against the periphery of the through hole 10, thereby effectively sealing the outer hole of the through hole 10.

[0043] In an alternative embodiment of the present invention, as Figure 1 shown, the outer contour of the cross-section of the crimping ring 52 is non-circular. In this embodiment, the outer contour of the cross-section of the crimping ring 52 is non-circular. The embedded rubber-coated seat 56 wrapped outside the crimping ring 52 can cooperate with the outer side wall of the crimping ring 52 to limit the rotation of the crimping ring 52, thereby preventing the multi-core cable 50 from twisting and causing the welding part to fall off. Specifically, during implementation, in order to facilitate crimping and positioning on the outer side of the wire sheath at the end of the multi-core cable 50 and have a good pressing effect on the wire cores 501, the crimping ring 52 is usually made of a metal material (for example: copper, iron).

[0044] In an alternative embodiment of the present invention, as Figures 1-3 and Figure 5As shown, a positioning rib 101 is formed by the protrusion of the hole wall of the through hole 10. A positioning groove 545 is provided on the bottom side wall of the wire core fixing seat 54 for plugging and matching with the positioning rib 101 so that the wire core fixing seat 54 can be inserted into the through hole 10 only at a predetermined angle. Anti-detachment protrusions 547 are respectively protruded from both side walls at the top end of the wire core fixing seat 54 for preventing the wire core fixing seat 54 from detaching from the embedded rubberized seat 56. In this embodiment, through the plugging and matching between the positioning groove 545 of the wire core fixing seat 54 and the positioning rib 101 of the through hole 10, the wire core fixing seat 54 can be inserted into the through hole 10 only at a predetermined angle, ensuring that after the wire core fixing seat 54 is inserted into the through hole 10, the wire core 501 thereon can be accurately aligned with the welding part 30 of the circuit board 3, facilitating assembly. The anti-detachment protrusions 547 are also provided on the wire core fixing seat 54. After the embedded rubberized seat 56 is injection-molded to wrap the anti-detachment protrusions 547, the anti-detachment protrusions 547 will cooperate with the inner wall of the embedded rubberized seat 56 to prevent the wire core fixing seat 54 from detaching.

[0045] In an alternative embodiment of the present invention, as Figure 8 shown, the housing 1 includes a front shell 17 and a rear cover 18 that are snap-fitted and hermetically connected to each other. The through hole 10 is provided on the rear cover 18. The vehicle-mounted camera further includes a camera module 8 assembled at one end inside the housing 1 and extending from the front shell 1. The end of the FPC cable 32 is correspondingly inserted into the camera module 8. In this embodiment, the housing 1 is assembled by the front shell 17 and the rear cover 18. During specific assembly, the structures related to the rear cover 18 can be assembled on the rear cover 18 first, and then the front shell 17 and the rear cover 18 are connected and assembled to improve the assembly efficiency. Specifically, the camera module 8 includes a lens 80, a PCB board 82, and a photosensitive chip 84 to realize the normal image acquisition function of the vehicle-mounted camera. A plug is provided at the end of the FPC cable 32 and is inserted into a preset socket 821 on the PCB board 82, thereby realizing the signal interaction between the PCB board 82 and external devices.

[0046] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. A vehicle-mounted camera, comprising a housing having a through hole at one end, a circuit board assembled in the housing, and a wire harness assembly having one end passing through the through hole and electrically connected to the circuit board and the other end for connecting to an external device, characterized in that, The wire harness assembly includes: A multi-core cable; A crimping ring crimped and fixed at a position near one end of the multi-core cable; A core fixing seat provided with a plurality of wire passing holes. The section of the multi-core cable between the crimping ring and the end face of the adjacent end of the multi-core cable is stripped of the wire sheath, and each of the internal cores passes through the wire passing holes in a one-to-one correspondence; and An embedded rubber coating seat formed by secondary injection molding at one end of the multi-core cable and wrapping the crimping ring and one end of the core fixing seat adjacent to the crimping ring. The end of the core fixing seat away from the crimping ring extends outside the embedded rubber coating seat to form an exposed end; The wire harness assembly inserts the exposed end of the core fixing seat into the through hole of the housing, and the embedded rubber coating seat seals and covers the outer orifice of the through hole and is fixed to the outer side wall of the housing. The ends of the respective cores extending through the core fixing seat are correspondingly welded to the preset welding parts on the circuit board.

2. The vehicle-mounted camera according to claim 1, wherein, Each of the wire passing holes is further filled with a first sealing glue for sealing the gap between the hole wall of the wire passing hole and the core.

3. The vehicle-mounted camera according to claim 1, wherein An annular baffle is further formed on the inner wall of the housing around the through hole. A dispensing groove is formed on the inner side of the annular baffle. The circuit board is received in the dispensing groove. The dispensing groove is further filled with a second sealing glue for sealing the inner orifice of the through hole and covering the circuit board.

4. The vehicle-mounted camera according to claim 3, wherein, The circuit board is a flexible FPC board. One side of the end of the flexible FPC board provided with the welding parts is attached to the end face of the exposed end of the core fixing seat and is welded and fixed to the cores in a one-to-one correspondence by the welding parts. The second sealing glue correspondingly covers the welding parts of the flexible FPC board and the cores. The other end of the flexible FPC board passes through the second sealing glue and forms an FPC cable.

5. The vehicle-mounted camera according to claim 1 or 4, characterized in that, The welding part includes a jack penetrating the circuit board and a solder pad formed on the surface of the circuit board around the jack. The end part of the core passes through the jack and is welded and fixed to the solder pad.

6. The vehicle-mounted camera according to claim 5, wherein, The circuit board is provided with positioning holes, and the outer end face of the core fixing seat is provided with positioning convex columns for inserting and cooperating with the positioning holes to align the jacks with the cores in a one-to-one correspondence.

7. The vehicle-mounted camera according to claim 1, characterized in that, Convex ears are symmetrically protruded from both sides of the bottom end of the embedded rubber coating seat respectively. Locking holes are provided on the convex ears. An annular embedding groove is provided on the bottom end face of the embedded rubber coating seat around the core fixing seat. A sealing gasket with a top end protruding from the annular embedding groove is embedded in the annular embedding groove. Another screw passes through the locking holes of the convex ears and is locked in the preset screw holes of the housing to fix the embedded rubber coating seat to the outer side wall of the housing. The sealing gasket tightly abuts against the periphery of the through hole to seal the outer orifice of the through hole.

8. The vehicle-mounted camera according to claim 1, wherein, The outer contour of the cross section of the crimping ring is non-circular.

9. The vehicle-mounted camera according to claim 1, characterized in that, Positioning convex ribs are protruded on the hole wall of the through hole. Positioning grooves for inserting and cooperating with the positioning convex ribs are provided on the bottom side wall of the core fixing seat so that the core fixing seat can be inserted into the through hole only at a predetermined angle. Anti-detachment protrusions for preventing the core fixing seat from detaching from the embedded rubber coating seat are further protruded from both side walls of the top end of the core fixing seat.

10. The in-vehicle camera according to claim 4, characterized in that, The housing includes a front shell and a rear cover that are snap-fitted and sealed together. The through hole is provided on the rear cover. The vehicle-mounted camera further includes a camera module assembled at one end inside the housing and extending out from the front shell, and the end of the FPC cable is correspondingly inserted on the camera module.

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