CN-224201660-U - Annular light source and visual detection 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, which comprise a shell body, an annular circuit board and an outer ring limiting ring, wherein the outer ring limiting ring is detachably connected with the shell body; the shell body is provided with a detection through hole, 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 outer peripheral edge of the annular circuit board are arranged at the end part of the outer ring limiting ring, two adjacent first clamping bosses are arranged at intervals, and the first clamping bosses extend to the light emitting side of the annular circuit board so as to support the outer peripheral edge of the annular circuit board. The annular light source and the visual detection device can simplify the installation steps and improve the assembly efficiency of the annular light source.

Inventors

• ZHANG ZIHAO
• LIU YING
• ZHAO HUABIN

Assignees

• 广东奥普特科技股份有限公司

Dates

Publication Date

20260505

Application Date

20250603

Claims (10)

1. 1. The annular light source is characterized by comprising a shell body (1), an annular circuit board (2) and an outer ring limiting ring (3), wherein the outer ring limiting ring (3) is detachably connected with the shell body (1); The shell body (1) is provided with a detection through hole (101), and an annular limiting part (11) for limiting an inner hole of the annular circuit board (2) is arranged around the detection through hole (101); The end part of the outer ring limiting ring (3) is provided with first clamping bosses (31) used for limiting the peripheral edge of the annular circuit board (2), two adjacent first clamping bosses (31) are arranged at intervals, and the first clamping bosses (31) extend to the light emitting side of the annular circuit board (2) so as to support the peripheral edge of the annular circuit board (2).
2. 2. An annular light source according to claim 1, characterized in that the housing body (1) is provided with an annular groove (12) for connection with the outer ring stop ring (3); The outer ring limiting ring (3) can be pressed into the annular groove (12) along the central line direction of the detection through hole (101).
3. 3. The annular light source according to claim 1, characterized in that the housing body (1) and the outer ring stop ring (3) form a support body; At least two detection through grooves (13) are formed in the peripheral edge of the support body at intervals, and second clamping bosses (32) used for supporting the annular circuit board (2) are arranged on the back face of the bottom wall, close to the detection through holes (101), of the detection through grooves (13).
4. 4. A ring light source according to claim 3, characterized in that the housing body (1) has a profiling surface (104) facing the ring 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 profiling surface (104), and a cooling gap (201) is formed between the annular circuit board (2) and the profiling surface (104).
5. 5. An annular light source according to claim 3, characterized in that the annular limiting portion (11) is formed with a limiting step groove (111); When the annular circuit board (2) is mounted on the supporting body, the annular circuit board (2) is simultaneously contacted with the step vertical surface and the step transverse surface of the limiting step groove (111).
6. 6. The annular light source according to claim 5, characterized in that the annular circuit board (2) forms a first and a second bonding surface, which both surround the detection through hole (101), and which are perpendicular to the second bonding surface; the first attaching surface is used for attaching the step vertical surface, and the second attaching surface is used for attaching the step transverse surface.
7. 7. An annular light source according to claim 1, characterized in that the first clamping boss (31) is provided with an elastic part (4) for abutting against and supporting the annular circuit board (2).
8. 8. The annular light source according to claim 7, wherein 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. 9. A ring light source according to claim 3, characterized in that the detection through slots (13) are provided with four, four detection through slots (13) being arranged around the circumferential array of detection through holes (101), and that the centre line of the detection through holes (101) and the centre line of the detection through slots (13) intersect.
10. 10. A visual inspection device, characterized by comprising an inspection camera (5) and an annular light source according to any one of claims 1 to 9; the detection camera (5) is opposite to the detection through hole (101).

Description

Annular light source and visual detection device Technical Field The utility model relates to the technical field of machine vision detection, in particular to an annular light source and a vision detection device. Background The annular light source can provide illumination effects with different illumination angles, and has application in the fields of PCB substrate detection, IC element detection, liquid crystal detection and the like. The annular light source generally includes a housing, an annular circuit board, and a fastening assembly including at least three set screws that secure the annular circuit board to the housing. However, the fixing screw is adopted to fix the circuit board, so that the fixing screw is required to be screwed up for many times, and the annular circuit board is easily broken due to the fact that local pressure deformation is too large on the annular circuit board. In order to avoid the fixing screw to fracture the annular circuit board, special care is needed during assembly, and the assembly efficiency is not improved. In view of this, it is desirable to design an annular light source and a visual inspection device, which can facilitate simplifying the installation steps and improving the assembly efficiency of the annular light source. The above information is presented as background information only to aid in the understanding of the present disclosure and is not intended or admitted to be prior art relative to the present disclosure. Disclosure of utility model The utility model provides an annular light source and a visual detection device, which are beneficial to simplifying the installation steps and improving the assembly efficiency of the annular light source. In order to achieve the above object, the present utility model provides the following technical solutions: An annular light source comprises a shell body, an annular circuit board and an outer ring limiting ring, wherein 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 for limiting an inner hole of the annular circuit board is arranged around the detection through hole; The end part of the outer ring limiting ring is provided with first clamping bosses used for limiting the peripheral edge of the annular circuit board, two adjacent first clamping bosses are arranged at intervals, and the first clamping bosses extend to the light emitting side of the annular circuit board so as to support the peripheral edge of the annular circuit board. Optionally, the housing body is provided with an annular groove for connecting with the outer ring limiting ring; The outer ring limiting ring can be pressed into the annular groove along the central line direction of the detection through hole. Optionally, the housing body and the outer ring limit ring form a support body; at least two detection through grooves are formed in the peripheral edge of the supporting body at intervals, and a second clamping boss for supporting the annular circuit board is arranged on the back face of the bottom wall, close to the detection through hole, of the detection through groove. Optionally, the housing body has a contoured surface facing the annular circuit board; When the annular circuit board is mounted on the support body, the back surface of the annular circuit board is parallel to the profiling surface, and a cooling gap is formed between the annular circuit board and the profiling surface. Optionally, a limiting step groove is formed on the annular limiting part; When the annular circuit board is installed on the supporting body, the annular circuit board is simultaneously contacted with the step vertical surface and the step transverse surface of the limiting step groove. Optionally, the annular circuit board forms a first bonding surface and a second bonding surface, the first bonding surface and the second bonding surface both encircle the detection through hole, and the first bonding surface is perpendicular to the second bonding surface; the first attaching surface is used for attaching the step vertical surface, and the second attaching surface is used for attaching the step transverse surface. Optionally, an elastic portion for supporting the annular circuit board in a collision manner is installed on the first clamping boss. Optionally, the section of the elastic part is triangular, and the bottom end of the annular circuit board abuts against the inclined plane of the triangle. Optionally, the detection through grooves are four, the four detection through grooves are arranged around the detection through hole circumference array, and the center line of the detection through hole is intersected with the center line of the detection through groove. A visual inspection device comprising an inspection camera and an annular light source as claimed in any one of the preceding claims; the detection camera is opposite to th