Vehicle-mounted camera

Abstract

The utility model relates to the technical field of cameras, and discloses a vehicle-mounted camera, which comprises a lens assembly and a shell. A second calibration section, a threaded section and a first calibration section coaxially and sequentially extend from the lens assembly; the shell is provided with an installation cavity used for installing the lens assembly, and the inner wall of the installation cavity is sequentially provided with a second calibration surface, a threaded surface and a first calibration surface which are connected with the second calibration section, the threaded section and the first calibration section in a matched mode. When the lens assembly is assembled in the mounting cavity, the threaded section is in threaded connection with the threaded surface, the first calibration section abuts against the first calibration surface, and the second calibration section abuts against the second calibration surface. The vehicle-mounted camera provided by the utility model solves the problems that the axial connection between the lens and the shell is easy to deviate, and the coaxiality between the lens and the shell is difficult to guarantee.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, in particular to a vehicle-mounted camera. Background Art

[0002] As automotive cameras place increasingly higher demands on the consistency of the optical axis after lens assembly, higher requirements are placed on the coaxiality and axial displacement between the lens and the housing during assembly. It is necessary to achieve the greatest possible overlap between the lens optical axis and the center of the image sensor in order to improve product assembly yield, reduce product manufacturing costs and improve product manufacturing efficiency.

[0003] In the related art, the assembly methods between the lens and the housing usually include glue point connection, thread connection and thread plus shaft hole matching connection. Among them, the glue point connection is difficult to ensure the accuracy of the optical axis during the production process of the camera; the thread connection is difficult to ensure the coaxiality of the lens and the housing because there are tolerances in the threads of the lens and the housing, and in order to ensure that the lens is smoothly installed in the housing, a certain gap is usually left between the lens and the housing; the thread plus shaft hole matching connection, when the lens and the housing are connected by threads, the upper part of the lens is without any limit or calibration, and the axial connection between the lens and the housing is prone to offset, which is also difficult to ensure the coaxiality between the lens and the housing, and thus it is difficult to ensure the consistency of the optical axis of the camera.

[0004] Therefore, it is urgent to solve the problem that the axial connection between the lens and the housing is prone to deviation and it is difficult to ensure the coaxiality between the lens and the housing. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a vehicle-mounted camera, which solves the problem that the axial connection between the lens and the housing is prone to offset and it is difficult to ensure the coaxiality between the lens and the housing.

[0006] The technical effect to be achieved by the utility model is achieved through the following technical solutions:

[0007] The utility model provides a vehicle-mounted camera, comprising:

[0008] A lens assembly, wherein a second calibration section, a threaded section and a first calibration section are coaxially extended in sequence; and

[0009] The housing is provided with an installation cavity for installing the lens assembly, and the inner wall of the installation cavity is provided with a second calibration surface, a threaded surface and a first calibration surface which are matched and connected with the second calibration section, the threaded section and the first calibration section in sequence;

[0010] When the lens assembly is assembled in the mounting cavity, the threaded section is threadedly connected to the threaded surface, the first calibration section abuts against the first calibration surface, and the second calibration section abuts against the second calibration surface.

[0011] In some implementations, a horizontal cross-sectional diameter of the first calibration surface is smaller than a horizontal cross-sectional diameter of the thread surface.

[0012] In this implementation, since the horizontal cross-sectional diameter of the first calibration surface is smaller than the horizontal cross-sectional diameter of the threaded surface, the first calibration section can smoothly pass through the threaded surface and abut against the first calibration surface, ensuring that the lens assembly can be smoothly installed into the installation cavity, thereby improving operability.

[0013] In some implementations, the outer peripheral wall of the first calibration section and the first calibration surface are both smooth surfaces.

[0014] In this implementation, the smooth surface makes it easier to install the lens assembly into the installation cavity, and avoids interference or greater resistance to the threading caused by the axial hole matching between the first calibration section and the first calibration surface when the threaded section and the threaded surface are threaded together.

[0015] In some implementations, the first calibration surface includes a guide portion and an abutment portion, the guide portion is respectively connected to the threaded surface and the abutment portion, the abutment portion has a horizontal cross-sectional diameter smaller than that of the guide portion and abuts against the first calibration section.

[0016] In this implementation, the guide portion can guide the first calibration section to abut against the abutment portion, thereby improving the operability of the installation.

[0017] In some implementations, the guide portion is an inclined surface.

[0018] In some implementations, a guide member is provided at one end of the first calibration segment away from the threaded segment, and a horizontal cross-sectional diameter of the guide member is smaller than a horizontal cross-sectional diameter of the first calibration surface.

[0019] In this implementation, the guide member makes it easier to install the first calibration section and abut against the first calibration surface when the lens assembly is installed into the installation cavity, thereby improving the assembly convenience of the overall structure.

[0020] In some implementations, the lens assembly further includes a flange connected to an end of the second calibration section that is away from the threaded section; and a snap-in groove extending from the mounting cavity that is snap-fitted with the flange.

[0021] In this implementation, the flange is clamped in the clamping groove, which increases the connection surface between the lens assembly and the housing, thereby making the connection between the lens assembly and the housing more stable and improving the compactness of the overall structure.

[0022] In some implementations, a seal is provided at the connection between the flange and the connection groove.

[0023] In some implementations, the seal is a sealing ring.

[0024] In this implementation, the sealing ring enables a sealed connection between the lens assembly and the housing, thereby achieving waterproof and dustproof effects.

[0025] In some implementations, a glue layer is further provided at the clamping point between the flange and the clamping groove.

[0026] In summary, the utility model has at least the following benefits:

[0027] The vehicle-mounted camera provided by the utility model has a three-section matching connection between the lens assembly and the shell, and the threaded connection ensures the connection stability between the lens assembly and the shell. The axial hole matching connection between the first calibration section and the first calibration surface, and the second calibration section and the second calibration surface not only ensures the coaxiality of the lens assembly and the shell, but also makes the connection between the lens assembly and the shell more stable, thereby solving the problem that the axial connection between the lens and the shell is prone to deviation and it is difficult to ensure the coaxiality between the lens and the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the vehicle-mounted camera of Example 1;

[0029] Figure 2 This is a schematic diagram of the structure of the vehicle-mounted camera of Example 2;

[0030] Figure 3 This is a schematic diagram of the structure of the vehicle-mounted camera of Example 3;

[0031] Figure 4 for Figure 3 An exploded view of the vehicle-mounted camera is shown.

[0032] Markings in the figure:

[0033] 1. lens assembly; 11. second calibration section; 12. threaded section; 13. first calibration section; 131. guide member; 14. flange; 15. sealing member;

[0034] 2. Shell; 2a. Mounting cavity; 2b. Clamping groove; 21. Second calibration surface; 22. Threaded surface; 23. First calibration surface; 231. Guide portion; 232. Abutment portion. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of them.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] Please see attached Figure 1 The vehicle-mounted camera of the utility model comprises a lens assembly 1 and a housing 2.

[0039] Among them, see Figure 1 , Figure 1 The schematic diagram shows the structural relationship between the lens assembly 1 and the housing 2 in the embodiment of the utility model. Specifically, the lens assembly 1 is coaxially extended with a second calibration section 11, a threaded section 12 and a first calibration section 13 in sequence; the housing 2 is provided with a mounting cavity 2a for mounting the lens assembly 1, and the inner wall of the mounting cavity 2a is provided with a second calibration surface 21, a threaded surface 22 and a first calibration surface 23 that are matched and connected with the second calibration section 11, the threaded section 12 and the first calibration section 13 in sequence; when the lens assembly 1 is assembled in the mounting cavity 2a, the threaded section 12 is threadedly connected with the threaded surface 22, the first calibration section 13 is abutted against the first calibration surface 23, and the second calibration section 11 is abutted against the second calibration surface 21.

[0040] In this embodiment, when assembling the lens assembly 1 and the housing 2, the first calibration section 13 is installed into the installation cavity 2a of the housing 2 and abuts against the first calibration surface 23, so as to realize the axial hole matching connection between the first calibration section 13 and the first calibration surface 23, and at the same time, the coaxiality of the lens assembly 1 and the housing 2 is calibrated for the first time to ensure the coaxiality between the lens assembly 1 and the housing 2; the threaded section 12 is rotated and installed into the installation cavity 2a, and is threadedly connected with the threaded surface 22 to fix the lens assembly 1 in the installation cavity 2a; the second calibration section 11 abuts against the second calibration surface 21, and based on the axial hole matching connection and the threaded connection, the lens assembly 1 is calibrated. The coaxiality between the head assembly 1 and the shell 2 is calibrated twice. Since there is a certain tolerance between the threaded segment 12 and the threaded surface 22, the coaxiality between the lens assembly 1 and the shell 2 will be affected, which may easily cause the coaxiality to deviate. The cooperation between the second calibration segment 11 and the second calibration surface 21 is more conducive to observing the coaxiality between the lens assembly 1 and the shell 2, and is convenient for even adjusting the slight deviation between the lens assembly 1 and the shell 2 caused by the threaded connection, thereby ensuring the coaxiality between the lens assembly 1 and the shell 2, and then ensuring the consistency of the optical axis of the camera, while making the connection between the lens assembly 1 and the shell 2 more stable.

[0041] In the above-mentioned vehicle-mounted camera, since the lens assembly 1 and the shell 2 are connected by a three-stage fitting, the threaded connection ensures the connection stability between the lens assembly 1 and the shell 2, and the axial hole fitting connection between the first calibration section 13 and the first calibration surface 23, and the second calibration section 11 and the second calibration surface 21 not only ensures the coaxiality of the lens assembly 1 and the shell 2, but also makes the connection between the lens assembly 1 and the shell 2 more stable, thereby solving the problem that the axial connection between the lens and the shell is prone to deviation and it is difficult to ensure the coaxiality between the lens and the shell.

[0042] It can be understood that since the lens assembly 1 and the housing 2 are connected through a three-stage fitting, the problem of the tension of the seal 15 affecting the connection between the lens assembly 1 and the housing 2 and thus affecting the coaxiality when a seal 15 is provided between the lens assembly 1 and the housing 2 is avoided.

[0043] In some other embodiments, the lens assembly 1 is snap-connected to the shell 2 through a snap-fit ​​structure. Specifically, the shell 2 is provided with an installation cavity 2a for installing the lens assembly 1, and a snap-fit ​​is formed on the inner wall of the installation cavity 2a. A snap-fit ​​groove is provided in the lower section of the lens assembly 1. During assembly, the lens assembly 1 is pressed into the installation cavity 2a so that the snap-fit ​​is snap-connected to the snap-fit ​​groove, thereby fixing the lens assembly 1 in the installation cavity 2a of the shell 2. In addition, the lens assembly 1 is connected to the shell 2 through a seal 15, thereby ensuring the sealing reliability of the overall structure.

[0044] Furthermore, the lens assembly 1 can also be screwed to the shell 2 by means of a threaded connection. Specifically, the shell 2 is provided with an installation cavity 2a for installing the lens assembly 1, and a screw hole is provided in the installation cavity 2a. The lens assembly 1 is provided with a screw section threadedly connected to the screw hole. The lens assembly 1 is rotated into the installation cavity 2a so that the threaded section 12 is screwed to the screw hole, and the lens assembly 1 can be fixed in the installation cavity 2a of the shell 2. At the same time, the lens assembly 1 can be connected to the shell 2 by means of a glue-point sealing method, thereby ensuring the sealing reliability of the overall structure.

[0045] Embodiment 2:

[0046] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the vehicle-mounted camera of the utility model. Figure 1~2 .

[0047] Among them, see Figure 1 , Figure 1 The structure relationship between the first calibration surface 23 and the thread surface 22 in the embodiment of the utility model is illustrated. Specifically, the horizontal cross-sectional diameter of the first calibration surface 23 is smaller than the horizontal cross-sectional diameter of the thread surface 22.

[0048] In this embodiment, since the horizontal cross-sectional diameter of the first calibration surface 23 is smaller than the horizontal cross-sectional diameter of the threaded surface 22, the first calibration section 13 can smoothly pass through the threaded surface 22 and abut against the first calibration surface 23, ensuring that the lens assembly 1 can be smoothly installed in the installation cavity 2a, improving operability. Of course, the horizontal cross-sectional diameters of the first calibration surface 23 and the threaded surface 22 can also be equal.

[0049] In some preferred embodiments, the outer peripheral wall of the first calibration section 13 and the first calibration surface 23 are both smooth surfaces. This makes it easier to install the lens assembly 1 into the installation cavity 2a, and avoids the interference or greater resistance caused by the axial hole matching between the first calibration section 13 and the first calibration surface 23 when the threaded section 12 and the threaded surface 22 are screwed together; at the same time, it is convenient to adjust the coaxiality between the lens assembly 1 and the housing 2, and avoid the coaxiality between the lens assembly 1 and the housing 2 from being offset, thereby causing the problem of inconsistent optical axis of the camera.

[0050] In some preferred embodiments, see Figure 2 , Figure 2The structural relationship between the guide portion 231 and the abutment portion 232 in the embodiment of the utility model is illustrated. Specifically, the first calibration surface 23 includes a guide portion 231 and an abutment portion 232, wherein the guide portion 231 is respectively connected to the threaded surface 22 and the abutment portion 232, wherein the horizontal cross-sectional diameter of the abutment portion 232 is smaller than the horizontal cross-sectional diameter of the guide portion 231 and abuts against the first calibration section 13. When the lens assembly 1 is installed into the installation cavity 2a, the guide portion 231 can guide the first calibration section 13 to abut against the abutment portion 232, thereby improving the operability of the installation; at the same time, the axial connection consistency between the lens assembly 1 and the housing 2 is further ensured, thereby avoiding the problem of offset and thus causing the coaxiality deviation. The reliability of the overall structure is improved.

[0051] In some preferred embodiments, the guide portion 231 is an inclined surface. The horizontal cross-sectional diameter of the threaded surface 22 is larger than the horizontal cross-sectional diameter of the first calibration surface 23. The inclined surface connects the threaded surface 22 and the abutment portion 232, respectively, so that the first calibration section 13 can be quickly installed into the installation cavity 2a and abut against the abutment portion 232. It can be understood that the guide portion 231 is not limited to an inclined surface, and can also be a structure with a guiding function such as a guide groove.

[0052] In some more preferred embodiments, see Figure 2 , Figure 2 The diagram illustrates the structural relationship between the first calibration section 13 and the guide member 131 in an embodiment of the utility model. Specifically, a guide member 131 is provided at one end of the first calibration section 13 away from the threaded section 12, and the horizontal cross-sectional diameter of the guide member 131 is smaller than the horizontal cross-sectional diameter of the first calibration surface 23. When the lens assembly 1 is installed into the installation cavity 2a, the first calibration section 13 is easier to install and abut against the first calibration surface 23, thereby improving the assembly convenience of the overall structure. Of course, it is not limited to the method of making the horizontal cross-sectional diameter of the guide member 131 smaller than the horizontal cross-sectional diameter of the first calibration surface 23 to make the first calibration section 13 easier to install and abut against the first calibration surface 23. The first calibration section 13 can also be deformed to make it easier to install and abut against the first calibration surface 23.

[0053] Furthermore, the length of the first calibration section 13 is greater than the length of the second calibration section 11, so that the housing 2 can better limit the position of the lens assembly 1 and improve the compactness of the overall structure.

[0054] Embodiment 3:

[0055] The difference between this embodiment and embodiment 2 is that this embodiment further optimizes the structure of the vehicle-mounted camera of the utility model. Figure 3~4 .

[0056] Among them, see Figure 3 , Figure 3 The structure relationship between the flange 14 and the clamping groove 2b in the embodiment of the utility model is illustrated. Specifically, the lens assembly 1 also includes a flange 14, which is connected to the end of the second calibration section 11 away from the threaded section 12; the installation cavity 2a extends with a clamping groove 2b that is engaged with the flange 14.

[0057] In this embodiment, the flange 14 is snapped into the snap-in groove 2b, which increases the connection surface between the lens assembly 1 and the shell 2, thereby making the connection between the lens assembly 1 and the shell 2 more stable, improving the compactness of the overall structure, and further ensuring the axial connection consistency between the lens assembly 1 and the shell 2, thereby improving the overall structural reliability and avoiding looseness between the lens assembly 1 and the shell 2, thereby affecting the coaxiality problem.

[0058] In some preferred embodiments, please combine Figure 3 and Figure 4 , Figure 3 and Figure 4 The diagram shows the structural relationship between the seal 15 and the flange 14 and the clamping groove 2b in the embodiment of the utility model. Specifically, the seal 15 is provided at the clamping point of the flange 14 and the clamping groove 2b. The seal 15 ensures the connection sealing between the lens assembly 1 and the housing 2, prevents dust and / or water vapor from entering, and plays a role of waterproof and dustproof.

[0059] Furthermore, the sealing member 15 may be a sealing ring, so that the lens assembly 1 and the housing 2 are sealed and connected.

[0060] In some more preferred embodiments, a glue layer is further provided at the connection between the flange 14 and the connection groove 2b to prevent the lens assembly 1 and the housing 2 from loosening, thereby ensuring the connection stability between the lens assembly 1 and the housing 2, and further ensuring the coaxiality between the lens assembly 1 and the housing 2.

[0061] The vehicle-mounted camera of the utility model has a three-section mating connection between the lens assembly 1 and the shell 2, and the threaded connection ensures the connection stability between the lens assembly 1 and the shell 2. The axial hole mating connection between the first calibration section 13 and the first calibration surface 23, and the second calibration section 11 and the second calibration surface 21 not only ensures the coaxiality of the lens assembly 1 and the shell 2, but also makes the connection between the lens assembly 1 and the shell 2 more stable, thereby solving the problem that the axial connection between the lens and the shell is prone to deviation and it is difficult to ensure the coaxiality between the lens and the shell.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0064] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0065] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A vehicle-mounted camera, characterized in that: include: A lens assembly (1) having a second calibration section (11), a threaded section (12), and a first calibration section (13) extending coaxially in sequence; and The housing (2) is provided with a mounting cavity (2a) for mounting the lens assembly (1), the inner wall of the mounting cavity (2a) being provided with a second calibration surface (21), a threaded surface (22) and a first calibration surface (23) in sequence, which are matched and connected with the second calibration section (11), the threaded section (12) and the first calibration section (13); When the lens assembly (1) is assembled in the mounting cavity (2a), the threaded section (12) is threadedly connected to the threaded surface (22), the first calibration section (13) abuts against the first calibration surface (23), and the second calibration section (11) abuts against the second calibration surface (21).

2. The vehicle-mounted camera according to claim 1, characterized in that: The horizontal cross-sectional diameter of the first calibration surface (23) is smaller than the horizontal cross-sectional diameter of the thread surface (22).

3. The vehicle-mounted camera according to claim 1, characterized in that: The outer peripheral wall of the first calibration section (13) and the first calibration surface (23) are both smooth surfaces.

4. The vehicle-mounted camera according to claim 1, characterized in that: The first calibration surface (23) comprises a guide portion (231) and an abutment portion (232); the guide portion (231) is connected to the threaded surface (22) and the abutment portion (232) respectively; the abutment portion (232) has a horizontal cross-sectional diameter that is smaller than the horizontal cross-sectional diameter of the guide portion (231) and abuts against the first calibration section (13).

5. The vehicle-mounted camera according to claim 4, characterized in that: The guide portion (231) is an inclined surface.

6. The vehicle-mounted camera according to claim 1, characterized in that: A guide member (131) is provided at one end of the first calibration section (13) away from the threaded section (12); the horizontal cross-sectional diameter of the guide member (131) is smaller than the horizontal cross-sectional diameter of the first calibration surface (23).

7. The vehicle-mounted camera according to claim 1, characterized in that: The lens assembly (1) further comprises a flange (14), the flange (14) being connected to an end of the second calibration section (11) facing away from the threaded section (12); the mounting cavity (2a) is extended with a snap-fitting groove (2b) for snap-fitting with the flange (14).

8. The vehicle-mounted camera according to claim 7, characterized in that: A sealing member (15) is provided at the clamping point between the flange (14) and the clamping groove (2b).

9. The vehicle-mounted camera according to claim 8, characterized in that: The sealing element (15) is a sealing ring.

10. The vehicle-mounted camera according to claim 8, characterized in that: A glue layer is also provided at the clamping point between the flange (14) and the clamping groove (2b).

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