On-vehicle camera

Abstract

The utility model discloses an automobile camera, include: the front cover of one end with the installation cylinder of convex, the PCB of assembling in the front cover, the lens of assembling in the installation cylinder of the front cover with AA technology, the stop ring of lens and the outer end surface between the installation cylinder are bonded through UV glue, the back cover, and the front cover corresponding docking and through laser welding are connected into an organic whole, assemble in the back cover and with PCB link's FPC, and one end goes into the back cover and with FPC link's wire harness, wherein, the lens is assembled to the front cover after the back cover and the front cover laser welding connection, still be equipped with the vent hole on the back cover, and the vent hole is sealed by the interference fit of sealing plug after the completion of heat curing. The utility model discloses an automobile camera, and the vent hole is set up on the back cover, and the gas inside is convenient for heat curing UV glue and exports, can conveniently adopt the assembly process of first laser welding and connecting into an organic whole of the front cover and the back cover, and then AA technology assembly lens.

Description

Technical Field

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

[0002] With the development of intelligent vehicle cameras, the resolution of images is increasing, and the functional requirements are becoming more intelligent. This leads to increased power consumption, resulting in high heat generation and persistently high temperatures for the components. To improve heat dissipation, materials such as pure aluminum are typically chosen for the front and rear covers of the vehicle camera housing. In terms of assembly, the front and rear covers are then joined together using laser welding to form the housing. This improves heat dissipation, saves space, and enhances waterproofing.

[0003] However, during implementation, the inventors discovered that the aforementioned existing vehicle cameras still have the following drawbacks: 1. Vehicle cameras typically use AA (Active Autofocus) technology to assemble the lens and adhesives such as UV glue to bond it to the front cover. The high temperatures generated during laser welding can be conducted through the front cover to the UV glue, easily causing it to deform or fail. This can lead to minor issues like lens misalignment, resulting in inaccurate focusing and poor image quality, or even the lens detaching from the front cover. Conversely, if a closed housing is first formed through laser welding before lens assembly, the increased air pressure inside the housing during the UV glue's curing process can cause adhesive leakage, resulting in poor airtightness.

[0004] 2. Lenses assembled using the AA process rely entirely on adhesive to bond the lens to the front cover, which places very high demands on the adhesive and the usage environment. If the adhesive is exposed to too much air, it is prone to corrosion and aging. Under harsh usage conditions, the physical properties of the adhesive deteriorate, which can lead to the risk of the lens falling off. Once the adhesive fails, the lens position will shift, resulting in abnormal camera function.

[0005] 3. The front and rear covers are mainly made of cold-extruded pure aluminum. The cold extrusion process usually results in impurities and folds at the leading edge of the front and rear covers. During the subsequent laser welding process, burrs and voids are likely to occur at the impurities and folds, resulting in poor airtightness of the formed shell. Utility Model Content

[0006] The technical problem to be solved by this utility model embodiment is to provide a vehicle-mounted camera that can be assembled in a low-cost and highly feasible manner.

[0007] To solve the above-mentioned technical problems, the present invention first provides the following technical solution: a vehicle-mounted camera, comprising: A front cover made of metal and having an outwardly protruding mounting cylinder at one end, the front cover having a first cavity; PCB assembled within the first cavity of the front cover; The lens is assembled in the mounting tube of the front cover using the AA process. The middle section of the lens has a radially outward protrusion forming a stop ring. The inner end of the lens is inserted into the mounting tube and is bonded to the outer end face of the mounting tube by UV adhesive through the stop ring. The rear cover, made of metal and having a second cavity, is correspondingly mated with the front cover and connected to it as a whole by laser welding. The second cavity is connected to the first cavity. The rear cover has a wire harness through hole for the wire harness to pass through. An FPC assembled within the second cavity of the rear cover and connected to the PCB; and A wire harness, one end of which extends into the second cavity of the rear cover through the wire harness perforation and is connected to the FPC. The lens is assembled onto the front cover after the rear cover and the front cover are laser welded together. The rear cover is also provided with an vent hole for air to escape from the first cavity and the second cavity during the heat curing of the UV adhesive during lens assembly. After heat curing, the vent hole is sealed by an interference fit of a sealing plug.

[0008] Furthermore, the outer end of the vent hole is filled with sealant to seal the sealing plug.

[0009] Furthermore, the inner end opening of the wire harness perforation is sealed with waterproof adhesive.

[0010] Furthermore, the mating parts of the front cover and the rear cover each expand outward to form an outer ring edge, and the outer ring edges of the two are also welded together to form a whole.

[0011] Furthermore, the outer ring edge is a ring of uniform thickness at all points or a conical ring with decreasing thickness from the root to the outer edge.

[0012] Furthermore, the vehicle-mounted camera also includes an outer cover that is assembled on the outside of the front cover. The outer cover covers the bonding area between the lens and the front cover, and the outer cover has a through hole for the outer end of the lens to be exposed.

[0013] Furthermore, the outer cover is fixed relative to the front cover by a snap-fit ​​structure.

[0014] Furthermore, an venting notch is provided on the side of the PCB.

[0015] After adopting the above technical solution, the present invention has at least the following beneficial effects: The vehicle camera provided by the present invention, by opening an vent hole on the rear cover, facilitates the escape of internal gas during the heat curing of UV adhesive. After heat curing, the vent hole is sealed with a sealing plug. This allows for convenient assembly of the front and rear covers by laser welding them together first, followed by lens assembly using the AA process. This not only avoids the high temperature generated during the traditional method of assembling the lens first and then laser welding the front and rear covers, which causes the UV adhesive bonding the lens and the front cover to deform and fail due to heat, but also avoids the defect of increased gas pressure in the enclosed space inside the camera due to heat, causing UV adhesive to overflow from the bonding area and resulting in poor airtightness when the front cover is laser welded first and the lens is assembled later. The present invention not only effectively fixes the front and rear covers but also meets higher levels of waterproof protection requirements, showing good performance and prospects in vehicle applications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the disassembled structure of an optional embodiment of the vehicle-mounted camera of this utility model.

[0017] Figure 2 This is a schematic diagram of the combined state structure of an optional embodiment of the vehicle-mounted camera of this utility model.

[0018] Figure 3 This is a schematic diagram of the assembly of the lens in an optional embodiment of the vehicle-mounted camera of this utility model.

[0019] Figure 4 This is a cross-sectional view of the assembled structure of an optional embodiment of the vehicle-mounted camera of this utility model.

[0020] Figure 5 for Figure 4 A magnified view of part A in the middle.

[0021] Figure 6 This is a schematic diagram of the outer ring edge of another optional embodiment of the vehicle-mounted camera of this utility model. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 6 As shown, an optional embodiment of this utility model provides a vehicle-mounted camera, including: A front cover 1 made of metal material and having an outward protrusion at one end of the mounting cylinder 10, the front cover 1 having a first cavity 12; PCB 3 assembled within the first cavity 12 of the front cover 1; The lens 5 is assembled in the mounting cylinder 10 of the front cover 1 using the AA process. The middle section of the lens 5 has a radially outward protrusion forming a stop ring 50. The inner end of the lens 5 is inserted into the mounting cylinder 10, and the stop ring 50 is bonded to the outer end face of the mounting cylinder 10 by UV glue 6. The rear cover 7, made of metal and having a second cavity 70, is connected to the front cover 1 by laser welding. The second cavity 70 is connected to the first cavity 12. The rear cover 7 has a wire harness through hole 72 for the wire harness 8 to pass through. The FPC 8 is assembled within the second cavity 70 of the rear cover 7 and connected to the PCB 3; and A wire harness 9, one end of which extends into the second cavity 70 of the rear cover 7 through the wire harness through hole 72 and is connected to the FPC 8; The lens 5 is assembled onto the front cover 1 after the rear cover 7 and the front cover 1 are laser welded together. The rear cover 7 is also provided with an vent 74 for air to escape from the first cavity 12 and the second cavity 70 when the UV adhesive 6 is heat-cured during the assembly of the lens 5. After heat curing, the vent 74 is sealed by an interference fit of a sealing plug 76.

[0024] The vehicle-mounted camera provided in this embodiment of the utility model allows internal gas to escape during the heat-curing of UV adhesive by opening an vent 74 on the rear cover 7 (e.g., Figure 3 (The flow direction is indicated by the dashed arrow). After heat curing, the vent hole 74 can be sealed with the sealing plug 76. This allows for convenient assembly of the front cover 1 and rear cover 7 by laser welding first, followed by AA process assembly of the lens 5. This not only avoids the high temperature generated during the traditional assembly of the lens 5 followed by laser welding of the front cover 1 and rear cover 7, which causes the UV adhesive 6 bonding the lens 5 and the front cover 1 to deform and fail due to heat, but also avoids the defect of increased gas pressure in the closed space inside the camera due to laser welding of the front cover 1 followed by lens 5, which causes the UV adhesive 6 to overflow from the bonding area and result in poor airtightness. This embodiment of the utility model can not only effectively fix the front cover 1 and rear cover 7, but also meet higher levels of waterproof protection requirements, and has good performance and prospects in automotive applications.

[0025] In another optional embodiment of this utility model, such as Figure 1 and Figure 4As shown, the outer end opening of the vent 74 is further filled with sealant 78 to seal the sealing plug 76. In this embodiment, sealant 78 is further filled into the outer end opening of the vent 74 to seal the vent 74 and the sealing plug 76 respectively, resulting in a better sealing effect and better protection for internal components such as PCB3 and FPC8.

[0026] In another optional embodiment of this utility model, such as Figure 1 , Figure 3 and Figure 4 As shown, the inner end opening of the wire harness perforation 72 is sealed with waterproof adhesive 79. In this embodiment, sealing the inner end opening of the wire harness perforation 72 with waterproof adhesive 79 effectively improves waterproof performance. In specific implementation, such as... Figure 1 and Figure 4 As shown, typically the connector 90 at one end of the wire harness 9 passes through the wire harness through hole 72 to mate with the FPC 8. A sealing ring 92 can also be further provided between the connector 90 and the outer wall of the back cover 7 to improve the sealing and waterproof performance.

[0027] In another optional embodiment of this utility model, such as Figures 4-6 As shown, the mating portions of the front cover 1 and the rear cover 7 are further expanded outward to form outer ring edges 13 and 73, respectively, which are then welded together. This embodiment, by expanding the mating portions of the front cover 1 and the rear cover 7 to form outer ring edges 13 and 73, not only increases the mating area of ​​the front cover 1 and the rear cover 7, enhancing the strength and sealing of the welded connection, but also ensures that impurities and defects such as folds, which are prone to occur during the molding of the front cover 1 and the rear cover 7, are mainly concentrated outside the outer ring edges. This allows for the removal of these impurities and defects by necessary adjustments to the outer ring edges 13 and 73 without affecting the main structure of the front cover 1 and the rear cover 7.

[0028] In another optional embodiment of this utility model, such as Figure 5 and Figure 6 As shown, the outer ring edges 13 and 73 are either rings of uniform thickness or tapered rings with decreasing thickness from the root to the outer edge. This embodiment designs two different shapes of outer ring edges 13 and 73, allowing for flexible selection based on structural design needs in specific applications.

[0029] In another optional embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 4As shown, the vehicle-mounted camera also includes an outer cover 4 correspondingly assembled on the outside of the front cover 1. The outer cover 4 covers the bonding area between the lens 5 and the front cover 1, and the outer cover 4 has a through hole 41 for the outer end of the lens 5 to be exposed. In this embodiment, by further providing the outer cover 4 to cover the bonding area between the lens 5 and the front cover 1, the UV adhesive 6 at the bonding area is not exposed and is protected from external light, moisture, and dust, which helps to extend the service life of the UV adhesive 6; while the through hole 41 allows the lens 5 to be exposed without affecting the normal shooting of the vehicle-mounted camera.

[0030] In another optional embodiment of this utility model, such as Figure 1 and Figure 4 As shown, the outer cover 4 is fixed to the front cover 1 via a snap-fit ​​structure. In this embodiment, the outer cover 4 is assembled onto the front cover 1 using a snap-fit ​​structure, which is simple in structure and easy to assemble and disassemble. Specifically, the snap-fit ​​structure typically includes a slot 14 formed on the side wall of the mounting cylinder 10 of the front cover 1 and corresponding hooks 40 formed on the inner wall of the outer cover 4. During assembly, the outer cover 4 is placed onto the mounting cylinder 10, and slight force is applied to engage the hooks 40 into the slot 14.

[0031] In another optional embodiment of this utility model, such as Figure 1 , Figure 3 and Figure 4 As shown, an air overflow notch 30 is provided on the side of the PCB 3. Normally, there is a certain gap between the side of the PCB 3 and the front cover 1, which allows air in the space between the PCB 3 and the lens 5 to pass through the gap and flow towards the air overflow hole 74. In this embodiment, by providing an air overflow notch 30 on the side of the PCB 3, the airflow efficiency can be further improved.

[0032] Combination Figures 1 to 4 As shown, the specific assembly process of the vehicle-mounted camera provided in this embodiment of the present invention is as follows: PCB 3 is assembled to the front cover 1, and FPC 8 is assembled to the rear cover 7 and connected to the wire harness 9 that extends through the wire harness through hole 72 on the rear cover 7. Connect the PCB 3 to the FPC 8; The front cover 1 and the rear cover 7 are connected by laser welding; The lens 5 is assembled onto the front cover 1 using the AA process, and the lens 5 and the front cover 1 are bonded together using UV glue 6. The UV adhesive 6 is heat-cured, during which internal air is discharged from the vent hole 74 opened on the rear cover 7; After curing, the vent hole 74 is sealed tightly with a sealing plug 76. An outer cover 4 is assembled on the outside of the front cover 1, and the outer cover 4 covers the bonding area between the lens 5 and the front cover 1.

[0033] In addition, such as Figure 1 , Figure 3 and Figure 4 As shown, the following steps can also be performed during the assembly process: The inner end opening of the wire harness perforation 72 is sealed by filling it with waterproof adhesive 79; and / or The vent hole 74 and the sealing plug 76 are further sealed and covered by filling the outer end opening of the vent hole 74 with sealant 78.

[0034] 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 variations under the guidance of the present invention without departing from the inventive spirit and the scope of protection of the claims. These variations are all within the protection scope of the present invention.

Claims

1. A vehicle-mounted camera, comprising: A front cover made of metal and having an outwardly protruding mounting cylinder at one end, the front cover having a first cavity; PCB assembled within the first cavity of the front cover; The lens is assembled in the mounting tube of the front cover using the AA process. The middle section of the lens has a radially outward protrusion forming a stop ring. The inner end of the lens is inserted into the mounting tube and is bonded to the outer end face of the mounting tube by UV adhesive through the stop ring. The rear cover, made of metal and having a second cavity, is correspondingly mated with the front cover and connected to it as a whole by laser welding. The second cavity is connected to the first cavity. The rear cover has a wire harness through hole for the wire harness to pass through. An FPC assembled within the second cavity of the rear cover and connected to the PCB; and A wire harness, one end of which extends into the second cavity of the rear cover through the wire harness perforation and is connected to the FPC. The lens is characterized in that it is assembled onto the front cover after the rear cover and the front cover are laser welded together. The rear cover is also provided with an vent hole for air to escape from the first cavity and the second cavity during the heat curing of the UV adhesive during lens assembly. After heat curing, the vent hole is sealed by an interference fit of a sealing plug.

2. The vehicle-mounted camera as described in claim 1, characterized in that, The outer end of the vent hole is also filled with sealant to seal the sealing plug.

3. The vehicle camera according to claim 1 or 2, characterized by The inner end opening of the wire harness perforation is sealed with waterproof adhesive.

4. The vehicle camera of claim 1, wherein, The joints of the front cover and the rear cover also expand outward to form outer ring edges, and the outer ring edges of the two are welded together to form a whole.

5. The vehicle camera of claim 4, wherein, The outer ring edge is either a ring of uniform thickness at all points or a conical ring with decreasing thickness from the root to the outer edge.

6. The vehicle-mounted camera as described in claim 1, characterized in that, The vehicle-mounted camera also includes an outer cover that is assembled on the outside of the front cover. The outer cover covers the bonding area between the lens and the front cover, and the outer cover has a through hole for the outer end of the lens to be exposed.

7. The vehicle camera of claim 6, wherein, The outer cover is fixed to the front cover by a snap-fit ​​structure.

8. The vehicle camera of claim 1, wherein, An vent is provided on the side of the PCB.

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