Annular light source and visual inspection device

Abstract

The utility model relates to the technical field of machine vision detection, and discloses an annular light source and a vision detection device, the annular light source and the vision detection device comprise a shell body, an annular circuit board and an outer ring limiting ring, the outer ring limiting ring is detachably connected with the shell body; the shell body is provided with a detection through hole, and an annular limiting part used for limiting the inner hole wall of the annular circuit board is arranged around the detection through hole; first clamping bosses used for limiting the peripheral edge of the annular circuit board are arranged at the end of the outer ring limiting ring, and every two adjacent first clamping bosses are arranged in a spaced mode. The first clamping boss extends to the light emitting side of the annular circuit board so as to support the peripheral edge of the annular circuit board. According to the annular light source and the visual inspection device, the installation steps can be simplified, and the assembly efficiency of the annular light source can be improved.

Description

Technical Field

[0001] This utility model relates to the field of machine vision inspection technology, and in particular to a ring light source and a vision inspection device. Background Technology

[0002] Ring light sources can provide different illumination effects at different angles and are used in fields such as PCB substrate inspection, IC component inspection, and LCD inspection.

[0003] A ring light source typically consists of a housing, a ring-shaped circuit board, and a fastening assembly. The fastening assembly includes at least three fixing screws that secure the ring-shaped circuit board to the housing. However, using fixing screws to secure the circuit board requires repeated tightening of the screws and can easily cause excessive localized pressure deformation of the ring-shaped circuit board, leading to breakage. To avoid the fixing screws cracking the ring-shaped circuit board, special care must be taken during assembly, which is detrimental to improving assembly efficiency.

[0004] Therefore, it is necessary to design a ring light source and a visual inspection device that can simplify the installation process and improve the assembly efficiency of the ring light source.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a ring light source and a visual inspection device, which can simplify the installation steps and improve the assembly efficiency of the ring light source.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A ring light source includes a housing body, a ring circuit board, and an outer ring limiting ring, wherein the outer ring limiting ring is detachably connected to the housing body.

[0009] The outer casing has a detection through hole, and an annular limiting part for limiting the inner hole of the annular circuit board is provided around the detection through hole;

[0010] The outer ring limiting ring has a first clamping protrusion at its end for limiting the outer peripheral edge of the annular circuit board, and two adjacent first clamping protrusions are spaced apart; the first clamping protrusion extends to the light-emitting side of the annular circuit board to support the outer peripheral edge of the annular circuit board.

[0011] Optionally, the outer shell body is provided with an annular groove for connecting with the outer ring limiting ring;

[0012] The outer ring limiting ring can be pressed into the annular groove along the center line of the detection through hole.

[0013] Optionally, the outer shell body and the outer ring limiting ring form a supporting body;

[0014] At least two detection slots are provided at intervals on the outer peripheral edge of the support body; a second clamping boss for supporting the annular circuit board is provided on the back side of the bottom wall of the detection slot near the detection hole.

[0015] Optionally, the housing body has a contoured surface facing the annular circuit board;

[0016] When the annular circuit board is mounted on the support body, the back of the annular circuit board is parallel to the contoured surface, and a cooling gap is formed between the annular circuit board and the contoured surface.

[0017] Optionally, a limiting step groove is formed on the annular limiting portion;

[0018] When the annular circuit board is installed on the support body, the annular circuit board simultaneously contacts the vertical and horizontal surfaces of the limiting step groove.

[0019] Optionally, the annular circuit board forms a first bonding surface and a second bonding surface, both of which surround the detection through hole, and the first bonding surface is perpendicular to the second bonding surface;

[0020] The first bonding surface is used to bond to the vertical surface of the step, and the second bonding surface is used to bond to the horizontal surface of the step.

[0021] Optionally, the first clamping boss is equipped with an elastic part for abutting against and supporting the annular circuit board.

[0022] Optionally, the cross-section of the elastic part is triangular, and the bottom end of the annular circuit board abuts against the inclined surface of the triangle.

[0023] Optionally, four detection slots are provided, arranged in a circumferential array around the detection through hole, and the center line of the detection through hole intersects with the center line of the detection slot.

[0024] A visual inspection device includes an inspection camera and a ring light source as described in any of the preceding claims;

[0025] The detection camera is positioned directly opposite the detection through-hole.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The ring light source and visual inspection device provided by this utility model can directly clamp the inner hole of the ring circuit board onto the ring limiting part, then put the outer limiting ring onto the ring circuit board, and make the end of the ring circuit board away from the ring limiting part clamp onto the first clamping protrusion. Finally, tighten the outer shell body and the outer limiting ring. The ring light source and visual inspection device in this embodiment do not require carefully tightening multiple screws on the ring circuit board, making the installation steps simpler and effectively improving the assembly efficiency of the ring light source.

[0028] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is an exploded view of the ring light source provided in this embodiment of the utility model;

[0031] Figure 2 This is a bottom-view schematic diagram of the ring light source provided in an embodiment of this utility model;

[0032] Figure 3 yes Figure 2 A cross-sectional view of the ring light source along line AA;

[0033] Figure 4 yes Figure 3 A magnified schematic diagram of the ring light source at position A;

[0034] Figure 5 This is a three-dimensional structural schematic diagram of the ring light source provided in an embodiment of the present invention;

[0035] Figure 6 This is a front view schematic diagram of the ring light source provided in an embodiment of this utility model;

[0036] Figure 7 yes Figure 6 A cross-sectional view of the central ring light source along line BB.

[0037] Reference numerals: 1. Outer shell body; 101. Detection through hole; 104. Contour surface; 11. Annular limiting part; 111. Limiting step groove; 12. Annular groove; 2. Annular circuit board; 201. Cooling gap; 3. Outer ring limiting ring; 31. First clamping boss; 32. Second clamping boss; 4. Elastic part; 5. Detection camera. Detailed Implementation

[0038] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0039] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0040] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0041] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0042] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0043] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0044] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0045] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0046] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0047] Example 1

[0048] In view of the aforementioned defects in existing ring light sources, the applicant, based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a ring light source that can solve the defects in the existing technology and make the ring light source more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.

[0049] Please refer to Figures 1 to 7 This utility model embodiment provides a ring light source, including a housing body 1, a ring circuit board 2, and an outer ring limiting ring 3. The outer ring limiting ring 3 is detachably connected to the housing body; for example, the connection method between the outer ring limiting ring 3 and the housing body 1 can be snap-fit, screw fixing, latch connection, or other connections.

[0050] The outer casing 1 has a detection through hole 101, and an annular limiting part 11 for limiting the inner hole of the annular circuit board 2 is provided around the detection through hole 101. Generally, the diameter of the inner hole of the circuit board 2 is equal to or slightly larger than the annular limiting part 11. The end of the outer limiting ring 3 is provided with a first clamping protrusion 31 for limiting the outer peripheral edge of the annular circuit board 2, and two adjacent first clamping protrusions 31 are spaced apart. The first clamping protrusion 31 extends to the light-emitting side of the annular circuit board 2 to support the outer peripheral edge of the annular circuit board 2.

[0051] Specifically, the assembly process of the ring light source in this embodiment is as follows:

[0052] ① Adjust the annular limiting part 11 so that the bottom surface of the annular limiting part 11 faces upward, and then the inner hole of the annular circuit board 2 is locked on the annular limiting part 11. At this time, the annular limiting part 11 positions the annular circuit board 2 and the outer shell body 1 supports the annular circuit board 2.

[0053] ② Insert the outer ring limiting ring 3 into the outer shell body 1, so that the first clamping boss 31 extends to the light-emitting side of the annular circuit board 2, and the first clamping boss 31 supports the outer peripheral edge of the annular circuit board 2.

[0054] ③ The outer ring limiting ring 3 is fixed and inserted into the outer shell body 1, so that the ring limiting part 11 and the first clamping boss 31 clamp and fix the ring circuit board 2; finally, the entire ring light source is flipped so that the ring light source emits light downward.

[0055] The installation method in this embodiment eliminates the need for screws on the annular circuit board 2, effectively preventing it from cracking under pressure, simplifying the installation structure, and improving the assembly efficiency of the annular light source. It should also be noted that the spaced-apart first locking protrusions 31 allow the assembler to adjust the position of the annular circuit board 2 from the bottom, ensuring a more accurate installation.

[0056] Optionally, the outer casing 1 is provided with an annular groove 12 for connecting with the outer ring limiting ring 3; the outer ring limiting ring 3 can be pressed into the annular groove 12 along the center line direction of the detection through hole 101. Specifically, when the outer ring limiting ring 3 is inserted into the annular groove 12 along the center line direction of the detection through hole 101, the outer casing 1 will not obstruct the insertion of the outer ring limiting ring 3, and the annular groove 12 can be accurately positioned, which is beneficial to further improve assembly efficiency.

[0057] Optionally, the outer casing 1 and the outer ring limiting ring 3 form a support body; at least two detection slots 13 are provided at intervals along the outer periphery of the support body; a second clamping boss 32 for supporting the annular circuit board 2 is provided on the back side of the bottom wall of the detection slots 13 near the detection through hole 101. Figure 5 As shown, each inspection slot 13 is equipped with an inspection camera 5 to inspect the surface of different areas of the workpiece. Additionally, an inspection camera 5 is also installed on the top of the inspection through-hole 101. Figure 1 As shown, the distance from the second clamping boss 32 to the detection through hole 101 is less than the distance from the first clamping boss 31 to the detection through hole 101. This not only effectively limits the positioning of the annular circuit board 2, but also reduces the range of flexible bending of the annular circuit board 2.

[0058] Optionally, the housing body 1 has a contoured surface 104 facing the annular circuit board 2; when the annular circuit board 2 is mounted on the support body, the back surface of the annular circuit board 2 is parallel to the contoured surface 104, and a cooling gap 201 is formed between the annular circuit board 2 and the contoured surface 104. The contoured surface 104 allows for a more uniform thickness of the cooling gap 201, resulting in more uniform heat dissipation of the annular circuit board 2 and reducing heat accumulation. Preferably, cooling airflow can be blown into the cooling gap to further improve the cooling effect of the annular circuit board 2.

[0059] Optionally, a limiting step groove 111 is formed on the annular limiting part 11; when the annular circuit board 2 is installed on the support body, the annular circuit board 2 simultaneously contacts the vertical surface and the horizontal surface of the limiting step groove 111.

[0060] Optionally, the annular circuit board 2 forms a first bonding surface and a second bonding surface, both of which surround the detection through hole 101, and the first bonding surface is perpendicular to the second bonding surface; the first bonding surface is used to bond to the vertical surface of the step, and the second bonding surface is used to bond to the horizontal surface of the step, thereby more accurately positioning the installation position and installation height of the annular circuit board 2.

[0061] Optionally, the first clamping boss 31 is equipped with an elastic part 4 for abutting against and supporting the annular circuit board 2. The elastic part 4 provides elastic support for the annular circuit board 2, reducing the possibility of damage to the annular circuit board 2 due to excessive impact force between the annular circuit board 2 and the first clamping boss.

[0062] Optionally, such as Figure 4 The elastic part 4 has a triangular cross-section, and the bottom end of the annular circuit board 2 abuts against the inclined surface of the triangle. The inclined surface of the elastic part 4 can effectively buffer the sliding and falling of the annular circuit board 2. Specifically, the annular circuit board 2 is trumpet-shaped and is installed at an angle. This not only supports the annular circuit board 2 when it slides down, but also allows the inner hole at the top of the annular circuit board 2 to better fit the annular limiting part 11.

[0063] Optionally, four detection slots 13 are provided, arranged in a circumferential array around the detection through hole 101, and the center line of the detection through hole 101 intersects with the center line of the detection slot 13.

[0064] Example 2

[0065] This embodiment discloses a visual inspection device, including an inspection camera 5 and a ring light source as described in Embodiment 1; the inspection camera 5 is directly facing the inspection through hole 101.

[0066] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A ring-shaped light source, characterized in that, It includes an outer shell body (1), a ring circuit board (2) and an outer ring limiting ring (3), wherein the outer ring limiting ring (3) is detachably connected to the outer shell body (1); The outer casing (1) has a detection through hole (101), and an annular limiting part (11) for limiting the inner hole of the annular circuit board (2) is provided around the detection through hole (101); The outer ring limiting ring (3) is provided with a first clamping boss (31) at its end for limiting the outer peripheral edge of the annular circuit board (2), and two adjacent first clamping bosses (31) are spaced apart; the first clamping boss (31) extends to the light-emitting side of the annular circuit board (2) to support the outer peripheral edge of the annular circuit board (2).

2. The ring light source according to claim 1, characterized in that, The outer shell body (1) is provided with an annular groove (12) for connecting with the outer ring limiting ring (3); The outer ring limiting ring (3) can be pressed into the annular groove (12) along the center line direction of the detection through hole (101).

3. The ring light source according to claim 1, characterized in that, The outer shell body (1) and the outer ring limiting ring (3) form a supporting body; At least two detection slots (13) are provided at intervals on the outer periphery of the support body; a second clamping boss (32) for supporting the annular circuit board (2) is provided on the back side of the bottom wall of the detection slot (13) near the detection through hole (101).

4. The ring light source according to claim 3, characterized in that, The outer casing (1) has a contoured surface (104) facing the annular circuit board (2); When the annular circuit board (2) is mounted on the support body, the back side of the annular circuit board (2) is parallel to the contour surface (104), and a cooling gap (201) is formed between the annular circuit board (2) and the contour surface (104).

5. The ring light source according to claim 3, characterized in that, A limiting step groove (111) is formed on the annular limiting part (11); When the annular circuit board (2) is installed on the support body, the annular circuit board (2) simultaneously contacts the vertical and horizontal surfaces of the limiting step groove (111).

6. The ring light source according to claim 5, characterized in that, The annular circuit board (2) forms a first bonding surface and a second bonding surface, both of which surround the detection through hole (101), and the first bonding surface is perpendicular to the second bonding surface. The first bonding surface is used to bond to the vertical surface of the step, and the second bonding surface is used to bond to the horizontal surface of the step.

7. The ring light source according to claim 1, characterized in that, The first clamping boss (31) is equipped with an elastic part (4) for abutting against and supporting the annular circuit board (2).

8. The ring light source according to claim 7, characterized in that, The cross-section of the elastic part (4) is triangular, and the bottom end of the annular circuit board (2) abuts against the inclined surface of the triangle.

9. The ring light source according to claim 3, characterized in that, The detection slots (13) are provided in four arrays, which are arranged in a circumferential array around the detection hole (101), and the center line of the detection hole (101) and the center line of the detection slots (13) intersect.

10. A visual inspection device, characterized in that, Includes a detection camera (5) and a ring light source as described in any one of claims 1 to 9; The detection camera (5) is directly opposite the detection through hole (101).

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