Lens module angle adjustment device

Abstract

The present invention belongs to the technical field of security lenses, and discloses a lens module angle adjustment device, including a guide base plate, a motor limit plate, a support column and a base limit plate. The guide base plate can carry the lens module, and the lens end face of the lens module abuts the guide base plate; one end of the motor limit plate is detachably connected to the guide base plate, and the motor limit plate is provided with a motor limit groove that can clamp the motor of the lens to limit the rotation of the lens; the support column is detachably connected to the motor limit plate, and the end face of the support column can abut the clamp of the lens module; the base limit plate is detachably connected to the other end of the motor limit plate away from the guide base plate, and the base limit plate is provided with a base limit groove, which can clamp the base of the lens module and limit the rotation of the base. The lens module angle adjustment device of the present invention can control the assembly position and assembly angle error of the lens and the base, and avoid undesirable phenomena such as clamp breakage during installation.

Description

Technical Field

[0001] The present invention relates to the technical field of security lenses, and in particular to a lens module angle adjustment device. Background Art

[0002] Existing security lenses often need to be used with corresponding bases. The assembly of common security lenses and bases generally relies on the human eye to judge the relative position, which often leads to individual deviations in assembly. In different environments, the lens module requires a special use angle. When the assembly deviation between the lens and the base is large, the lens module will be incompatible with the camera structure. In order to enable the lens module to meet the requirements of specific angles, it is necessary to control the angle deviation of the IRCUT (filter) in the base and the lens motor during assembly, so that the base is parallel to the lens axis and the relative angle error in the horizontal plane is controlled within ±2°. The traditional method of using the human eye to judge the assembly angle not only leads to large individual angle differences, but also easily causes undesirable phenomena such as the base clamp breaking during the assembly process. Therefore, there is an urgent need for an assembly tool that assists in angle adjustment. Summary of the invention

[0003] The object of the present invention is to provide a lens module angle adjustment device, which can control the assembly position and assembly angle error of the lens and the base, and avoid undesirable phenomena such as clamp breakage during installation.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A lens module angle adjustment device, comprising:

[0006] A guide bottom plate, the guide bottom plate can carry the lens module, and the lens end surface of the lens module abuts against the guide bottom plate;

[0007] a motor limit plate, one end of which is detachably connected to the guide bottom plate, the motor limit plate being provided with a motor limit groove, the motor limit groove being capable of clamping the motor of the lens and limiting the rotation of the lens;

[0008] A supporting column, the supporting column is detachably connected to the motor limit plate, and the end surface of the supporting column can abut against the clamp of the lens module; and

[0009] The base limit plate is detachably connected to the other end of the motor limit plate away from the guide bottom plate, and the base limit plate is provided with a base limit groove, which can clamp the base of the lens module and limit the rotation of the base.

[0010] As a preferred structure of the present invention, the motor limiting groove includes a bottom surface and an extension surface. When the motor limiting groove is engaged with the motor, the bottom surface and the extension surface abut against the side surface of the motor at the same time.

[0011] As a preferred structure of the present invention, the supporting column is perpendicular to the motor limiting plate, and when the motor limiting groove is clamped with the motor, the end face of the supporting column abuts against the end face of the clamp.

[0012] As a preferred structure of the present invention, the supporting column and the clamp are coaxially arranged.

[0013] As a preferred structure of the present invention, the guide base plate includes a lens limiting groove, and the lens limiting groove can be clamped with the outer circumferential surface of the lens.

[0014] As a preferred structure of the present invention, the lens limiting groove comprises a guide groove and a clamping groove which are interconnected, one end of the guide groove is open and extends along the axial direction of the supporting column, the clamping groove is a semicircular arc groove, and when the motor limiting groove is clamped with the motor, the clamping groove can abut the outer circumferential surface of the lens.

[0015] As a preferred structure of the present invention, the motor limit plate also includes a lens body limit groove, and the lens body limit groove is a V-shaped groove. When the motor limit groove is engaged with the motor, the lens body limit groove is engaged with the outer cylindrical surface of the lens body of the lens.

[0016] As a preferred structure of the present invention, the base limiting plate is parallel to the guide bottom plate, the base limiting groove includes two limiting surfaces parallel to each other, the limiting surfaces are parallel to the center line of the guide groove, and the two limiting surfaces respectively abut the side plates of the base.

[0017] As a preferred structure of the present invention, the base limiting groove also includes a receiving groove, and the receiving groove is configured to receive the side frame of the base.

[0018] As a preferred structure of the present invention, it is characterized in that the flatness of the guide base plate is not greater than 0.01 mm, and the roughness is not greater than Ra0.8.

[0019] Beneficial effects of the present invention: The lens module angle adjustment device provided by the present invention has a motor limit groove that clamps the motor of the lens to limit the rotation of the lens and the movement in the horizontal plane; the end face of the supporting column abuts against the clamp to limit the movement of the base in the horizontal plane; moreover, the end face of the supporting column provides support for the clamp to avoid the clamp from breaking; the base limit groove can limit the rotation of the base; by controlling the relative positions of the base limit groove and the motor limit groove, and when the processing accuracy meets the requirements, the assembly angle between the base and the lens can be accurately limited and the axes of the two can be made parallel, which is easy to use and simple to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural schematic diagram of a lens module angle adjustment device provided by an embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of adjusting a lens module by a lens module angle adjustment device provided by an embodiment of the present invention;

[0022] Figure 3 is a structural schematic diagram of a lens module provided by an embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of a motor limit slot provided in an embodiment of the present invention;

[0024] Figure 5 It is a structural schematic diagram of a base limiting plate provided in an embodiment of the present invention.

[0025] In the figure:

[0026] 1. Guide bottom plate; 11. Lens limit groove; 111. Guide groove; 112. Clamping groove; 2. Motor limit plate; 21. Motor limit groove; 211. Bottom surface; 212. Extension surface; 22. Lens body limit groove; 3. Support column; 4. Base limit plate; 41. Base limit groove; 411. Limit surface; 412. Accommodating groove;

[0027] 100, lens module; 101, lens; 102, motor; 103, clamp; 104, base; 1041, side panel; 1042, side frame. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides a lens module angle adjustment device for adjusting and limiting the assembly angle of the lens module 100. Figure 3As shown, the lens module 100 includes a lens 101 and a base 104, a motor 102 is fixedly connected to the lens 101, and a clamp 103 is fixedly connected to the base 104. When the lens 101 and the base 104 are assembled, it is necessary not only to ensure that the axes of the two are parallel, but also to ensure that the relative angle error of the lens 101 and the base 104 in the horizontal plane is controlled within ±2°. The lens module angle adjustment device of this embodiment includes a guide base plate 1, a motor limit plate 2, a support column 3 and a base limit plate 4. The guide base plate 1 can carry the lens module 100. When in use, the lens module 100 is placed on the guide base plate 1, and the end face of the lens 101 of the lens module 100 abuts the guide base plate 1. One end of the motor limit plate 2 is detachably connected to the guide base plate 1. Preferably, the motor limit plate 2 is threadedly connected to the guide base plate 1 by a fastening screw through the guide base plate 1, which is convenient for disassembly and assembly. The motor limit plate 2 is provided with a motor limit groove 21, which can clamp the motor 102 of the lens 101 and limit the rotation and horizontal movement of the lens 101. When the motor 102 is clamped, the rotation and horizontal movement of the lens 101 are limited. The support column 3 is detachably connected to the motor limit plate 2, and the end face of the support column 3 can abut the clamp 103 of the lens module 100. At this time, the horizontal movement of the base 104 is limited; moreover, the end face of the support column 3 provides support for the clamp 103, and when the electric screwdriver is used to install the connecting screws for the clamp 103, the clamp 103 can be prevented from breaking. The base limit plate 4 is detachably connected to the other end of the motor limit plate 2 away from the guide bottom plate 1. Preferably, the other end of the motor limit plate 2 is threadedly connected by fastening screws through the base limit plate 4, which is convenient for disassembly and assembly. The base limiting plate 4 is provided with a base limiting groove 41, which can clamp the base 104 of the lens module 100 and limit the rotation of the base 104. It can be understood that by controlling the relative position of the base limiting groove 41 and the motor limiting groove 21, and when the processing accuracy meets the requirements, the assembly angle between the base 104 and the lens 101 can be accurately limited and the axes of the two are parallel. Preferably, the flatness of the guide bottom plate 1 is not greater than 0.01mm, and the roughness is not greater than Ra0.8, so that the end face of the lens 101 can fit the guide bottom plate 1 horizontally, thereby providing a high-precision reference bottom surface for the lens module 100.

[0033] Furthermore, the motor limit slot 21 includes a bottom surface 211 and an extension surface 212. When the motor limit slot 21 is engaged with the motor 102, the bottom surface 211 and the extension surface 212 simultaneously abut against the side surface of the motor 102. In the present embodiment, the motor limit slot 21 is W-shaped, having a bottom surface 211 and two extension surfaces 212 connected to the bottom surface 211. The bottom surface 211 and the extension surface 212 can completely fit the side surface of the motor 102, which can limit the movement of the motor 102 in the horizontal plane and the rotation of the motor 102, thereby accurately and completely positioning the lens 101. In other embodiments, the motor limit slot 21 of other shapes can also be set according to the appearance of the motor 102, not limited to the present embodiment.

[0034] Furthermore, the supporting column 3 is perpendicular to the motor limit plate 2. When the motor limit groove 21 is engaged with the motor 102, the end face of the supporting column 3 abuts against the end face of the clamp 103. When the assembly angle between the base 104 and the lens 101 is accurate, the front boss of the base 104 should be aligned with the front of the motor 102. At this time, the end face of the clamp 103 is parallel to the motor limit plate 2; when the supporting column 3 is perpendicular to the motor limit plate 2, the end face of the supporting column 3 can completely fit the end face of the clamp 103 for accurate positioning. It can be understood that the length of the supporting column 3 is designed according to the appearance size of the lens module 100, and this embodiment is not limited here.

[0035] Furthermore, the supporting column 3 and the hoop 103 are coaxially arranged. In this way, the supporting column 3 can stably support the hoop 103, and when the electric screwdriver is tightening the screws on the hoop 103, the hoop 103 will not break due to uneven force.

[0036] Further, the guide base plate 1 includes a lens limiting groove 11, which can be clamped to the outer circumference of the lens 101. Specifically, the lens limiting groove 11 is a U-shaped groove, including a guide groove 111 and a clamping groove 112 that are interconnected. One end of the guide groove 111 is open and extends along the axial direction of the supporting column 3. The clamping groove 112 is a semi-circular arc groove. When the motor limiting groove 21 is clamped to the motor 102, the clamping groove 112 can abut the outer circumference of the lens 101. When the lens module angle adjustment device of this embodiment is used to adjust the assembly angle of the base 104 and the lens 101, the lens module 100 can slowly slide through the guide groove 111 and gradually approach the supporting column 3 and the motor limiting plate 2 to avoid damage to the lens module 100 caused by excessive adjustment impact. The clamping groove 112 can further limit the lens 101, and the limiting accuracy is higher.

[0037] Furthermore, the motor limit plate 2 also includes a lens body limit groove 22, which is a V-shaped groove. When the motor limit groove 21 is engaged with the motor 102, the lens body limit groove 22 is engaged with the outer cylindrical surface of the lens 101. Preferably, the lens body limit groove 22 is arranged in the middle of the motor limit plate 2, and can support the middle of the lens body of the lens 101 to prevent the lens 101 from tilting. The lens body limit groove 22 is arranged as a V-shaped groove, so that there is a line contact between the lens body limit groove 22 and the outer cylindrical surface of the lens 101, thereby preventing the lens 101 from being over-positioned.

[0038] Furthermore, the base limiting plate 4 is parallel to the guide bottom plate 1, such as Figure 5 As shown, the base limit groove 41 includes two limit surfaces 411 parallel to each other, the limit surfaces 411 are parallel to the center line of the guide groove 111, and the two limit surfaces 411 respectively abut against the side plate 1041 of the base 104. When the lens module 100 slowly slides through the guide groove 111 and gradually approaches the supporting column 3 and the motor limit plate 2, the two parallel limit surfaces 411 will adjust the angle of the base 104 and finally completely fit the side plate 1041 of the base 104. The limit structure is simple and the adjustment accuracy is high.

[0039] Furthermore, if Figure 5 As shown, the base limiting groove 41 further includes a receiving groove 412, and the receiving groove 412 is configured to receive the side frame 1042 of the base 104. Since the side of the base 104 has two side frames 1042 for installing bolts, one of the side frames 1042 protrudes from the side plate 1041, when the side plate 1041 abuts against the limiting surface 411, the receiving groove 412 provides a receiving space for the side frame 1042, which can prevent the side frame 1042 from affecting the adjustment action of the base 104 and also prevent the side frame 1042 from being damaged.

[0040] The method of using the lens module angle adjustment device of the embodiment of the present invention is as follows: place the lens 101 to be fixed and the base 104 on the guide base plate 1, then rotate the angle of the base 104 so that its front boss and the motor 102 face in the same direction; apply a driving force to the lens module 100 so that it slowly slides through the guide groove 111 and gradually approaches the supporting column 3 and the motor limit plate 2; the base limit groove 41 of the base limit plate 4 adjusts the angle of the base 104 through two parallel limit surfaces 411, and the motor 102 is rotated to move the front boss 104 ... The motor limit groove 21 of the limit plate 2 adjusts the angle and position of the lens 101, and the lens limit groove 11 of the guide base plate 1 further corrects the position of the lens 101. When the end face of the supporting column 3 abuts against the end face of the clamp 103, the position of the base 104 is limited. At this time, the axes of the lens 101 and the base 104 are parallel, and the relative angle error of the horizontal plane is controlled within ±2°; then use an electric screwdriver to tighten the screws of the clamp 103, and the end face of the supporting column 3 provides support to prevent the clamp 103 from breaking.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lens module angle adjustment device, used for adjusting the assembly angle of a lens module (100), characterized in that: The lens module (100) comprises a lens (101) and a base (104); the motor (102) is fixedly connected to the lens (101); and the clamp (103) is fixedly connected to the base (104); The lens module angle adjustment device comprises: A guide bottom plate (1), the guide bottom plate (1) being capable of carrying the lens module (100), the end surface of the lens (101) of the lens module (100) abutting against the guide bottom plate (1); a motor limiting plate (2), one end of the motor limiting plate (2) being detachably connected to the guide base plate (1), the motor limiting plate (2) being provided with a motor limiting groove (21), the motor limiting groove (21) being capable of engaging the motor (102) of the lens (101) and limiting the rotation of the lens (101); A supporting column (3), the supporting column (3) being detachably connected to the motor limiting plate (2), and the end surface of the supporting column (3) being capable of abutting against the clamp (103) of the lens module (100); and A base limiting plate (4), the base limiting plate (4) being detachably connected to the other end of the motor limiting plate (2) away from the guide bottom plate (1), the base limiting plate (4) being provided with a base limiting groove (41), the base limiting groove (41) being capable of engaging the base (104) of the lens module (100) and limiting the rotation of the base (104), the base limiting plate (4) being parallel to the guide bottom plate (1).

2. The lens module angle adjustment device according to claim 1, characterized in that: The motor limiting groove (21) comprises a bottom surface (211) and an extension surface (212); when the motor limiting groove (21) is engaged with the motor (102), the bottom surface (211) and the extension surface (212) simultaneously abut against the side surface of the motor (102).

3. The lens module angle adjustment device according to claim 1, characterized in that: The supporting column (3) is perpendicular to the motor limiting plate (2), and when the motor limiting groove (21) is engaged with the motor (102), the end surface of the supporting column (3) abuts against the end surface of the clamp (103).

4. The lens module angle adjustment device according to claim 3, characterized in that: The supporting column (3) and the clamp (103) are coaxially arranged.

5. The lens module angle adjustment device according to claim 1, characterized in that: The guide base plate (1) comprises a lens limiting groove (11), and the lens limiting groove (11) can be clamped with the outer circumferential surface of the lens (101).

6. The lens module angle adjustment device according to claim 5, characterized in that: The lens limiting groove (11) comprises a guide groove (111) and a clamping groove (112) which are interconnected. One end of the guide groove (111) is open and extends along the axial direction of the supporting column (3). The clamping groove (112) is a semicircular arc groove. When the motor limiting groove (21) is clamped to the motor (102), the clamping groove (112) can abut against the outer circumferential surface of the lens (101).

7. The lens module angle adjustment device according to claim 1, characterized in that: The motor limit plate (2) further comprises a lens body limit groove (22), wherein the lens body limit groove (22) is a V-shaped groove, and when the motor limit groove (21) is engaged with the motor (102), the lens body limit groove (22) is engaged with the outer cylindrical surface of the lens body of the lens (101).

8. The lens module angle adjustment device according to claim 6, characterized in that: The base limiting plate (4) is parallel to the guide bottom plate (1); the base limiting groove (41) comprises two limiting surfaces (411) parallel to each other; the limiting surfaces (411) are parallel to the center line of the guide groove (111); and the two limiting surfaces (411) respectively abut against the side plates (1041) of the base (104).

9. The lens module angle adjustment device according to claim 1, characterized in that: The base limiting groove (41) further comprises a receiving groove (412), wherein the receiving groove (412) is configured to receive a side frame (1042) of the base (104).

10. The lens module angle adjustment device according to any one of claims 1 to 9, characterized in that: The flatness of the guide base plate (1) is not greater than 0.01 mm, and the roughness is not greater than Ra0.8.

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