Image pickup device and vehicle
By adopting welding connection and positioning coordination methods in the imaging device, the shrinkage problem caused by glue curing is solved, the alignment accuracy between the photosensitive chip and the lens is improved, and the imaging effect of the imaging device is improved.
Patent Information
- Application Number
- CN202423171567.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing camera devices are prone to shrink during glue curing, which affects the alignment accuracy of the photosensitive chip and the lens, resulting in poor imaging effects.
The first housing is connected to the circuit board by welding, and the first housing and the circuit board are pre-positioned through the coordination of the positioning column and the positioning hole to facilitate soldering and ensure the alignment accuracy of the lens and the photosensitive chip.
Through welding connection, the occurrence of shrinkage is reduced, the alignment accuracy between the lens and the photosensitive chip is improved, and the imaging effect of the camera device is improved.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of camera device design, and specifically relates to a camera device and a vehicle. Background Art
[0002] The camera device can be placed outdoors to detect the surrounding environment. The camera device usually includes a housing, a camera and a circuit board. The housing includes a first housing and a second housing connected to each other. The camera is installed on the first housing. In the specific process of preparing the camera device, the AA (Active Alignment) process is usually used to form the camera device, that is, the circuit board is glued to the first housing by glue so that the photosensitive chip on the circuit board always faces the lens of the camera, thereby ensuring the imaging effect of the camera device.
[0003] However, after bonding with glue, obvious shrinkage is likely to occur during the curing process of the glue, that is, the glue shrinks significantly, which can easily affect the alignment accuracy of the photosensitive chip and the lens, and further affect the imaging effect of the camera device.
[0004] In summary, the camera device involved in the related art has the problem of poor imaging effect. Utility Model Content
[0005] The present application discloses a camera device and a vehicle to solve the problem of poor imaging effect of the camera device involved in the related art.
[0006] In order to solve the above technical problems, this application adopts the following technical solutions:
[0007] A camera device comprises a housing, a camera head, a circuit board and a positioning column;
[0008] The housing comprises a first housing and a second housing connected to each other, the camera is connected to the first housing, the camera has a first inner cavity, a lens is arranged in the first inner cavity, a photosensitive chip is arranged on a side of the circuit board facing the lens, and the first housing is welded to the circuit board so that the lens and the photosensitive chip are arranged opposite to each other;
[0009] One of the first shell and the circuit board is connected to the positioning post, and the other of the first shell and the circuit board is provided with a positioning hole, and the positioning post is positioned and matched with the positioning hole.
[0010] A vehicle comprises a vehicle body and the above-mentioned camera device, wherein the camera device is mounted on the vehicle body.
[0011] The technical solution adopted in this application can achieve the following beneficial effects:
[0012] In the present application, since the first shell and the circuit board are connected by welding, the connection between the first shell and the circuit board is more stable. At the same time, since the material used for welding is metal, and the chemical properties of metal are relatively stable, the welding point between the first shell and the circuit board is not prone to obvious shrinkage, that is, the shrinkage is small or even nonexistent, which makes it difficult for the lens and the photosensitive chip to move relative to each other, that is, the alignment accuracy of the lens and the photosensitive chip is high, which is not easy to affect the imaging effect of the camera device. In addition, since the positioning column and the positioning hole are positioned in coordination, the first shell and the circuit board can be pre-positioned when welding the first shell and the circuit board, so as to facilitate welding the first shell and the circuit board, which can further improve the alignment accuracy of the lens and the photosensitive chip, thereby further improving the imaging effect of the camera device. Therefore, the camera device disclosed in the present application can solve the problem of poor imaging effect of the camera device involved in the related art. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A schematic cross-sectional view of the camera device disclosed in an embodiment of the present application;
[0014] Figure 2 A schematic diagram of the connection structure between the camera and the first housing disclosed in the embodiment of the present application;
[0015] Figure 3 and Figure 4 A schematic diagram of the connection structure of the camera, the first housing and the circuit board disclosed in the embodiment of the present application;
[0016] Figure 5 It is a schematic cross-sectional structural diagram of the camera and the first housing disclosed in the embodiment of the present application;
[0017] Figure 6 It is a schematic cross-sectional structure diagram of the camera, the first housing and the sealing ring disclosed in the embodiment of the present application;
[0018] Figure 7 This is a schematic diagram of the coordination of the camera, first housing, circuit board and sealing ring disclosed in an embodiment of the present application.
[0019] Description of reference numerals:
[0020] 100 - shell, 110 - first shell, 111 - reinforcement part, 112 - stopper, 120 - second shell, 130 - second inner cavity;
[0021] 200-camera, 210-lens, 220-lens barrel;
[0022] 300-circuit board, 310-photosensitive chip, 320-positioning hole;
[0023] 400-positioning column;
[0024] 500-welding ring;
[0025] 600-Seal ring. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0027] The camera device disclosed in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.
[0028] Please refer to Figure 1-Figure 7 The present application discloses a camera device, which includes a housing 100 , a camera head 200 , a circuit board 300 and a positioning column 400 .
[0029] The camera device disclosed in the present application can be installed as a vehicle-mounted camera on the body of a vehicle (the vehicle may specifically be the vehicle described below), for example, it can be installed on the front, rear (i.e., the rear of the vehicle described below) and both sides of the vehicle body, and powered by a vehicle-mounted power supply or other specially provided power supply to facilitate the realization of assisted driving functions.
[0030] For example, the camera device can be used as a streaming media exterior rearview mirror. Since the size of the camera device is usually small, it can reduce wind resistance to a certain extent. At the same time, the picture taken by the streaming media exterior rearview mirror is clearer and the shooting angle is wider. Therefore, the streaming media exterior rearview mirror can display the scene behind the side of the vehicle more clearly, so that the driver can accurately obtain the conditions of the environment around the vehicle body.
[0031] When the camera device is installed as a vehicle-mounted camera at the front, both sides or the rear of the vehicle body, the camera device can be used to obtain images in the corresponding orientation. For example, the camera device can be used as a vehicle-mounted camera that can realize the automatic parking function of the vehicle. The camera device can be specifically installed on the bumper at the rear of the vehicle body. The camera device can capture the image behind the vehicle body in real time and transmit the captured image to the central rearview mirror, so that the vehicle driver can observe the real situation behind the vehicle from the perspective of the camera device. At the same time, during the automatic parking process, the camera device monitors the environment at the rear of the vehicle body in real time, and cooperates with the reversing radar and other sensors arranged around the vehicle body to scan and find a suitable parking space. Once a suitable space is found, the vehicle-mounted system will calculate the best parking path, and control the steering, acceleration and braking systems through the vehicle's electronic control unit to achieve precise automatic parking operations. It can be seen that the camera device plays a particularly important role in automatic parking operations.
[0032] The housing 100 is a basic component of the camera device, which can provide a mounting base for other components of the camera device, such as providing a mounting base for the camera 200 and the circuit board 300. Specifically, the housing 100 may include a first housing 110 and a second housing 120 connected to each other, the camera 200 is connected to the first housing 110, the camera 200 has a first inner cavity, a lens 210 is disposed in the first inner cavity, and external light can enter the camera device through the lens 210.
[0033] A photosensitive chip 310 is provided on the side of the circuit board 300 facing the lens 210, and the first housing 110 is welded and connected to the circuit board 300, so that the lens 210 and the photosensitive chip 310 are arranged opposite to each other, and the alignment accuracy of the lens 210 and the photosensitive chip 310 is high, which can enable the photosensitive chip 310 to capture the light passing through the lens 210 and convert it into an electronic signal, and finally form the image to be captured. Due to the high alignment accuracy of the lens 210 and the photosensitive chip 310, the camera device disclosed in this application can better meet the potential requirements of high-performance imaging in the future.
[0034] Optionally, in order to further ensure the alignment accuracy between the lens 210 and the photosensitive chip 310 , other molds may be used to position the first shell 110 and the circuit board 300 during the specific welding process of the first shell 110 and the circuit board 300 .
[0035] In another embodiment, please refer to Figures 1 to 3One of the first shell 110 and the circuit board 300 is connected to the positioning post 400, and the other of the first shell 110 and the circuit board 300 is provided with a positioning hole 320, and the positioning post 400 is positioned and matched with the positioning hole 320, that is, the first shell 110 and the circuit board 300 are positioned by the positioning post 400 and the positioning hole 320, which makes the positioning of the first shell 110 and the circuit board 300 simpler, and then facilitates the welding of the first shell 110 and the circuit board 300, so as to further improve the alignment accuracy of the lens 210 and the photosensitive chip 310, thereby further improving the imaging effect of the camera device.
[0036] When the positioning column 400 is closer to the center area of the circuit board 300, the positioning column 400 will limit the size of the photosensitive chip 310. To this end, the positioning column 400 can be made farther away from the center area of the circuit board 300. For example, the positioning column 400 is located at the edge of the circuit board 300. At this time, the size of the photosensitive chip 310 can be set larger, which is more conducive to improving the imaging effect of the camera device.
[0037] In the present application, since the first shell 110 and the circuit board 300 are connected by welding, the connection between the first shell 110 and the circuit board 300 is more stable. At the same time, since the material used for welding is metal, and the chemical properties of metal are relatively stable, the welding point between the first shell 110 and the circuit board 300 is not easy to shrink significantly, that is, the shrinkage is small or even non-existent, which makes it difficult for the lens 210 and the photosensitive chip 310 to move relative to each other, that is, the alignment accuracy of the lens 210 and the photosensitive chip 310 is high, which is not easy to affect the imaging effect of the camera device. In addition, since the positioning column 400 is positioned and matched with the positioning hole 320, the first shell 110 and the circuit board 300 can be pre-positioned when welding the first shell 110 and the circuit board 300, so as to facilitate welding the first shell 110 and the circuit board 300, which can further improve the alignment accuracy of the lens 210 and the photosensitive chip 310, thereby further improving the imaging effect of the camera device. Therefore, the camera device disclosed in the present application can solve the problem of poor imaging effect of the camera device involved in the related art.
[0038] Optionally, the first shell 110 and the second shell 120 can be connected by a threaded connector, and the two are connected to enclose the second inner cavity 130, and the circuit board 300 can be located in the second inner cavity 130, that is, the first shell 110 and the second shell 120 can jointly protect the circuit board 300. In addition, to ensure the sealing of the second inner cavity 130, a sealing structure is required between the second shell 120 and the first shell 110, and the sealing structure can ensure the sealing of the second inner cavity 130. Optionally, the sealing structure here can be an O-ring.
[0039] In another embodiment, please refer to Figure 1 The first shell 110 and the second shell 120 can be welded together to enclose the above-mentioned second inner cavity 130. The circuit board 300 can be located in the second inner cavity 130. The first shell 110 and the second shell 120 can be connected by laser welding. This ensures the sealing of the second inner cavity 130. At the same time, since there is no need to reserve the installation space of the above-mentioned threaded connector, the camera device disclosed in the present application is smaller in size and can reduce the processing steps and material costs to a certain extent.
[0040] Since the sealing of the second inner cavity 130 is guaranteed, dust and water vapor in the external environment can be effectively prevented from entering the second inner cavity 130, thereby preventing the lens 210 from fogging. When the camera device disclosed in the present application is installed on a vehicle body, it can assist the driver in eliminating weather interference during driving and can capture clearer images in real time.
[0041] Optionally, the first housing 110 may be connected to the positioning post 400, and the first end of the positioning post 400 may pass through the positioning hole 320 and be located on a side of the circuit board 300 away from the lens 210, see Figure 4 The camera device may further include a welding ring 500, which is sleeved on the first end and is welded to the positioning column 400. In this case, the welding ring 500 has a certain height, which can increase the welding area of the first housing 110 and the circuit board 300, thereby ensuring the welding stability of the two. Of course, the camera device may not include the welding ring 500, in which case the positioning column 400 and the circuit board 300 can be directly welded to each other at the positioning hole 320.
[0042] Optionally, the positioning post 400 may be a positioning copper post, that is, the positioning post 400 may be made of copper, which has a relatively low cost and good thermal conductivity, thereby achieving a better welding effect between the first housing 110 and the circuit board 300. Of course, in other embodiments, the positioning post 400 may be made of other materials.
[0043] Optionally, a connection hole may be opened on the first shell 110, and the second end of the positioning column 400 is connected to the connection hole to connect the first shell 110 to the positioning column 400. The second end of the positioning column 400 and the first end may be two ends of the positioning column 400 arranged opposite to each other.
[0044] In another embodiment, please refer to Figure 2 A reinforcing portion 111 is protruded from the first shell 110, and a connecting hole is opened on the reinforcing portion 111. The second end of the positioning column 400 is connected to the connecting hole. In this embodiment, the reinforcing portion 111 can enhance the structural strength of the connection between the first shell 110 and the positioning column 400, so as to achieve a better connection effect between the first shell 110 and the positioning column 400.
[0045] Optionally, the welding ring 500 may be directly connected to the positioning column 400 by welding.
[0046] In another embodiment, the welding ring 500 may be a welding tin ring, that is, the material of the welding ring 500 may be tin, and the outer peripheral surface of the positioning column 400 may be provided with a welding tin layer, and the welding tin layer is welded to the welding tin ring. Optionally, the welding tin layer may be formed on the outer peripheral surface of the positioning column 400 by electroplating or other processes. In this embodiment, the first housing 110 and the circuit board 300 are welded by tin, and since the melting point of tin is relatively low, after the welding ring 500 and the welding tin layer are melted by laser heating, the first housing 110 and the circuit board 300 are more easily welded.
[0047] In addition, the cost of tin is relatively low and the curing time is shorter, which can shorten the overall processing time. After cooling, the shrinkage of tin is smaller, which is less likely to affect the alignment accuracy of the lens 210 and the photosensitive chip 310. At the same time, tin is not easily affected by the external environment, that is, it is not sensitive to the temperature and humidity of the external environment, which makes different temperature and humidity conditions have less impact on the imaging of the camera device disclosed in this application.
[0048] Optionally, the number of the positioning posts 400 and the number of the positioning holes 320 may be equal to one.
[0049] In another embodiment, please refer to Figure 3 The number of the positioning posts 400 and the number of the positioning holes 320 can both be at least two, the positioning posts 400 can be arranged at intervals, the positioning holes 320 can be arranged at intervals, and the positioning posts 400 correspond to the positioning holes 320 one by one and are positioned and matched, that is, through multiple positioning posts 400 and positioning holes 320, the alignment accuracy of the lens 210 and the photosensitive chip 310 can be further improved. Specifically, the positioning posts 400 and the positioning holes 320 can be arranged at intervals along the direction surrounding the photosensitive chip 310.
[0050] Optionally, refer to Figure 1 and Figure 7The camera device may further include a sealing ring 600, which surrounds the photosensitive chip 310, that is, the sealing ring 600 is arranged around the photosensitive chip 310, and the sealing ring 600 can protect the photosensitive chip 310. The sealing ring 600 is sealed with the first housing 110 and the circuit board 300, that is, the sealing ring 600, the first housing 110 and the circuit board 300 form a sealed cavity for arranging the photosensitive chip 310, which can prevent dust and other impurities from entering the second inner cavity 130, and then entering the sealed cavity, and then falling on the photosensitive chip 310, thereby avoiding affecting the imaging function of the photosensitive chip 310. Of course, the camera device may not include the sealing ring 600.
[0051] Optionally, the sealing ring 600 may be made of a softer material such as rubber. In the specific welding process of the first housing 110 and the circuit board 300, the first housing 110 and the circuit board 300 may squeeze the sealing ring 600 so that the sealing ring 600 is compressed and deformed, thereby playing a sealing role. Optionally, the shape of the sealing ring 600 may be adapted to the shape of the photosensitive chip 310, for example, it may be square or round. Of course, the embodiment of the present application does not impose specific restrictions on this.
[0052] Optionally, refer to Figure 5 and Figure 6 , a stopper 112 is protruded on at least one of the first housing 110 and the circuit board 300, and the sealing ring 600 is limitedly matched with the stopper 112 in a direction perpendicular to the optical axis of the camera 200, that is, the sealing ring 600 is limited by the stopper 112, so that the sealing ring 600 is not easily displaced during the specific welding process of the first housing 110 and the circuit board 300, so that the sealing ring 600 can better play a sealing role. Of course, the stopper 112 may not be protruded on the first housing 110 and the circuit board 300.
[0053] Optionally, the shape of the limit member 112 can be adapted to the shape of the sealing ring 600, that is, the limit member 112 can be an annular limit member, which can make the limit member 112 fit with the sealing ring 600 to increase the matching area between the two, thereby further ensuring the limiting effect of the limit member 112 on the sealing ring 600. Of course, the embodiment of the present application does not impose any specific restrictions on this.
[0054] In an optional embodiment, the first shell 110 is provided with a limit member 112 , and a gap is provided between the limit member 112 and the circuit board 300 , such that the distance between the first shell 110 and the circuit board 300 can be changed, thereby satisfying the pressing requirement for the sealing ring 600 .
[0055] Optionally, the camera 200 may include a lens barrel 220, which has the first inner cavity mentioned above. Since the lens 210 is arranged in the first inner cavity, the lens barrel 220 can protect the lens 210. The lens barrel 220 can be installed on the first shell 110, that is, the lens barrel 220 and the first shell 110 can be arranged separately, and the two can be connected by threaded matching and sealing adhesive bonding.
[0056] In another embodiment, the lens barrel 220 and the first housing 110 may be integrally provided, which may reduce the assembly steps to a certain extent, thereby shortening the manual assembly time and reducing the labor cost, while ensuring the overall sealing.
[0057] Optionally, the first shell 110 and the second shell 120 may both be aluminum alloy shells, that is, the materials made of the first shell 110 and the second shell 120 may both be aluminum alloys, which are usually softer. Therefore, when the first shell 110 and the second shell 120 are welded together, the welding effect of the first shell 110 and the second shell 120 is better, and after welding, the sealing effect of the second inner cavity 130 is better. Of course, the materials made of the first shell 110 and the second shell 120 may also be other metal materials.
[0058] Aluminum alloys are generally divided into different series according to the aluminum content in the aluminum alloy, among which the aluminum alloy corresponding to the series with the highest aluminum content is softer. Therefore, optionally, the material made of the first shell 110 and the material made of the second shell 120 can both be aluminum alloys corresponding to the series with the highest aluminum content. For example, the material made of the first shell 110 and the material made of the second shell 120 can both be A1070 or A1060, which makes the first shell 110 and the second shell 120 easier to weld.
[0059] Since the camera device is usually placed outdoors, it has certain requirements on the structural strength, corrosion resistance and oxidation resistance of the camera device. Optionally, in order to reduce the production cost as much as possible while meeting the above requirements, one of the materials made of the first shell 110 and the materials made of the second shell 120 can be an aluminum alloy corresponding to a series with the highest aluminum content, and the other of the materials made of the first shell 110 and the second shell 120 can be an aluminum alloy corresponding to a series with a lower aluminum content. For example, the material made of the first shell 110 and the other of the materials made of the second shell 120 can be 6061. The hardness of the aluminum alloy in this series is relatively large, and it is widely used in application scenarios with high requirements for corrosion resistance and oxidation resistance.
[0060] Optionally, the present application also discloses a vehicle, including a vehicle body and the camera device described above, wherein the camera device is installed on the vehicle body so that the camera device disclosed in the present application is a vehicle-mounted camera device, that is, it can be used as the vehicle-mounted camera described above, which can facilitate the auxiliary driver to drive the vehicle safely and stably.
[0061] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.
[0062] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims
1. A camera device, characterized in that: It comprises a housing (100), a camera (200), a circuit board (300) and a positioning column (400); The housing (100) comprises a first housing (110) and a second housing (120) connected to each other; the camera (200) is connected to the first housing (110); the camera (200) has a first inner cavity, a lens (210) is arranged in the first inner cavity; a photosensitive chip (310) is arranged on a side of the circuit board (300) facing the lens (210); the first housing (110) and the circuit board (300) are connected by welding so that the lens (210) and the photosensitive chip (310) are arranged opposite to each other; One of the first shell (110) and the circuit board (300) is connected to the positioning column (400), and the other of the first shell (110) and the circuit board (300) is provided with a positioning hole (320), and the positioning column (400) is positioned and matched with the positioning hole (320).
2. The camera device according to claim 1, characterized in that The first shell (110) and the second shell (120) are connected by welding to enclose a second inner cavity (130), and the circuit board (300) is located in the second inner cavity (130).
3. The imaging device according to claim 1, wherein: The first shell (110) is connected to the positioning column (400), the first end of the positioning column (400) passes through the positioning hole (320) and is located on a side of the circuit board (300) away from the lens (210), and the camera device also includes a welding ring (500), the welding ring (500) is sleeved on the first end and is welded to the positioning column (400).
4. The camera device according to claim 3, characterized in that: The positioning column (400) is a positioning copper column; and / or, A reinforcement portion (111) is protruding from the first shell (110), a connection hole is formed on the reinforcement portion (111), and the second end of the positioning column (400) is connected to the connection hole.
5. The camera device according to claim 3, characterized in that: The welding ring (500) is a welding tin ring, and the outer peripheral surface of the positioning column (400) is provided with a welding tin layer, and the welding tin layer is connected to the welding tin ring by welding.
6. The imaging device according to claim 1, wherein: The number of the positioning posts (400) and the number of the positioning holes (320) are both at least two, the positioning posts (400) are arranged at intervals, the positioning holes (320) are arranged at intervals, and the positioning posts (400) correspond to the positioning holes (320) one by one and are positioned in coordination.
7. The imaging device according to claim 1, wherein: The camera device further comprises a sealing ring (600), the sealing ring (600) surrounding the photosensitive chip (310), and the sealing ring (600) is in sealing cooperation with the first housing (110) and the circuit board (300).
8. The imaging device according to claim 7, wherein: A limiting piece (112) is protruding from at least one of the first shell (110) and the circuit board (300), and the sealing ring (600) is in limiting cooperation with the limiting piece (112) in a direction perpendicular to the optical axis of the camera (200).
9. The imaging device according to claim 1, wherein: The camera (200) comprises a lens barrel (220), the lens barrel (220) having the first inner cavity, and the lens barrel (220) and the first housing (110) are integrally arranged; And / or, the first shell (110) and the second shell (120) are both aluminum alloy shells.
10. A vehicle, characterized in that: The invention comprises a vehicle body and the camera device according to any one of claims 1 to 9, wherein the camera device is mounted on the vehicle body.