Switchable double-light-source structure for endoscope

Abstract

The utility model relates to the field of industrial endoscopes, and discloses a switchable double-light-source structure for an endoscope, which comprises an endoscope body, a photosensitive camera is arranged in the middle of the front part of the endoscope body, two light guide optical fibers are arranged at the front part of the endoscope body, a thread groove is arranged on the outer surface of the endoscope body close to the front end, and the thread groove is communicated with the endoscope body. A photosensitive camera is installed on the front end of the sight glass body, a light insulation assembly is installed outside the photosensitive camera, a protection assembly is installed outside the light insulation assembly, the light insulation assembly comprises a protection cover, the protection cover is connected to the front end of the sight glass body, and a light guide ring is installed at the position, close to the front end, of the inner ring of the protection cover. Through the light guide ring, the light insulation ring and the protection sheet, the white light illumination light source and the ultraviolet light source can uniformly irradiate the surface of an object, the detection precision is improved, and the interference of light beams on the photosensitive camera is reduced; and through the protection plate and the balls, friction between an object and the sight glass body is reduced, the overall buffering effect is achieved, and collision between the object and the sight glass body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial endoscopes, specifically a switchable dual-light source structure for endoscopes. Background Technology

[0002] Industrial endoscopes are precision instruments used for non-destructive testing in industry. They can visualize the internal structure of mechanical equipment to discover potential safety hazards and faults. They mainly consist of a camera, an illumination system, and a photosensitive system. The dual light source uses dual optical fibers to receive high-brightness LED light emitters and 410nm ultraviolet light sources from the back end, respectively, to collect images of surface cracks in parts. The dual light source switching function is of great importance to the application scenarios of industrial endoscopes.

[0003] The publication number CN221884014U discloses an industrial endoscope, comprising a front end assembly, an insertion tube, a branch sliding rotation assembly, and a protective sleeve connected in sequence; the front end assembly includes an endoscope camera, and the front end assembly is fixedly connected to the insertion tube.

[0004] The aforementioned endoscope effectively prevents rigid tension and breakage of the connecting components, providing good protection for the endoscope. However, during light-guiding detection, the light beam is unevenly irradiated on the object surface, reducing detection accuracy. It is also difficult to separate the light beam from the photosensitive camera to reduce interference. Furthermore, when detecting objects close to them, the endoscope body is prone to friction and collision with the objects, reducing overall protection. Utility Model Content

[0005] The purpose of this invention is to provide a switchable dual-light source structure for endoscopes to solve the technical problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A switchable dual-light source structure for an endoscope includes an endoscope body, a photosensitive camera centrally mounted at the front of the endoscope body, two light-guiding optical fibers disposed at the front of the endoscope body, a threaded groove formed on the outer surface of the endoscope body near the front end, a light-blocking component mounted outside the photosensitive camera, a protective component mounted outside the light-blocking component, the light-blocking component including a protective cover, the protective cover being connected to the front end of the endoscope body, a light-guiding ring mounted on the inner ring of the protective cover near the front end, a light-blocking ring mounted on the inner ring of the light-guiding ring, a protective sheet mounted on the inner ring of the light-blocking ring, and a connecting groove formed on the inner wall of the protective cover near the rear end.

[0008] Preferably, the front end of the optical fiber extends through the front part of the endoscope body, and both optical fibers are arranged in a semi-circular ring.

[0009] Preferably, the diameter of the inner ring at the rear end of the protective cover matches the outer ring of the endoscope body, and the connecting groove and the threaded groove are connected by a thread.

[0010] Preferably, the inner and outer diameters of the light guide ring are equal to the inner and outer diameters between the two light guide fibers, and the diameter of the protective sheet is larger than the shooting range of the photosensitive camera.

[0011] Preferably, the protective assembly includes a plurality of protective plates, which are mounted around the outside of the protective cover. A plurality of ball bearings are movably mounted on the outer side of the protective plates. Two fixing sleeves are fixedly mounted on the outer wall of the protective cover and on the inner side of each protective plate. A connecting post is installed on the inner side of each protective plate and through the corresponding two fixing sleeves. A spring is installed at the inner end of the connecting post and inside the fixing sleeve.

[0012] Preferably, the ball bearing is located on the outside of the protective plate and is rotatably arranged, and several protective plates are installed in a ring.

[0013] Preferably, the connecting column and the protective plate are fixedly installed together, and the connecting column slides through the inside of the fixed sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1) The dual-light source structure of this endoscope, through the setting of light-blocking components, the protective cover is threadedly connected to the front end of the endoscope body, which facilitates the disassembly and regular cleaning of the protective cover. The light guide ring is attached to two light guide optical fibers, which can make the white light illumination source and the ultraviolet light source evenly illuminate the object surface, improving the detection accuracy. The light-blocking ring reduces the interference of the light beam on the photosensitive camera, and the protective sheet reduces the entry of external dust and moisture, thus improving the service life of the photosensitive camera.

[0016] 2) The dual-light source structure of this endoscope, through the setting of protective components, protective plates and ball bearings contacting the object surface, reduces the friction between the object and the endoscope body through the rotation of the ball bearings, and through the connection and extension of the connecting column, plays an overall buffering role, reducing the collision between the object and the endoscope body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall internal structure of a switchable dual-light source structure for an endoscope according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the light-blocking component in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the protective component in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the fixing sleeve in an embodiment of this utility model.

[0021] In the diagram: 1. Endoscope body; 2. Photosensitive camera; 3. Optical fiber; 4. Threaded groove; 5. Light blocking component; 6. Protective component; 7. Protective cover; 8. Light guide ring; 9. Light blocking ring; 10. Protective plate; 11. Connecting groove; 12. Protective plate; 13. Ball bearing; 14. Fixing sleeve; 15. Connecting post; 16. Spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Combination Figure 1-Figure 4 A switchable dual-light source structure for an endoscope includes an endoscope body 1, a photosensitive camera 2 centrally mounted at the front of the endoscope body 1, two light-guiding optical fibers 3 disposed at the front of the endoscope body 1, a threaded groove 4 formed on the outer surface of the endoscope body 1 near the front end, a light-blocking component 5 mounted outside the photosensitive camera 2, and a protective component 6 mounted outside the light-blocking component 5.

[0025] See Figure 2 Furthermore, the light-blocking component 5 includes a protective cover 7, which is connected to the front end of the endoscope body 1. A light guide ring 8 is installed on the inner ring of the protective cover 7 near the front end. A light-blocking ring 9 is installed on the inner ring of the light guide ring 8. A protective sheet 10 is installed on the inner ring of the light-blocking ring 9. A connecting groove 11 is opened on the inner wall of the protective cover 7 near the rear end.

[0026] The front end of the optical fiber 3 extends through the front part of the endoscope body 1. Both optical fibers 3 are arranged in a semi-circular ring. The two optical fibers 3 are used for white light illumination and ultraviolet light irradiation, respectively.

[0027] The inner diameter of the rear end of the protective cover 7 matches the outer diameter of the endoscope body 1. The connecting groove 11 and the threaded groove 4 are connected by threads. The protective cover 7 is threaded to the front end of the endoscope body 1 to facilitate the overall disassembly, assembly and cleaning.

[0028] The inner and outer diameters of the light guide ring 8 are equal to the inner and outer diameters between the two light guide fibers 3. The diameter of the protective sheet 10 is larger than the shooting range of the photosensitive camera 2. The light guide ring 8 enables the light beam of the light guide fiber 3 to be evenly irradiated onto the surface of the object.

[0029] Specifically, the protective cover 7 is threaded onto the outside of the endoscope body 1, the light guide ring 8 is attached to the two light guide optical fibers 3, the light beam of the light guide optical fiber 3 is isolated by the light blocking ring 9 to reduce interference with the photosensitive camera 2, and at the same time, the light beam of the light guide optical fiber 3 is evenly irradiated on the object surface, and the protection of the photosensitive camera 2 is improved by the protective sheet 10.

[0030] Example 2

[0031] See Figure 3 and Figure 4 Furthermore, based on Embodiment 1, the protective component 6 includes several protective plates 12, which are mounted around the outside of the protective cover 7. Several ball bearings 13 are movably mounted on the outer side of the protective plates 12. Two fixing sleeves 14 are fixedly mounted on the outer wall of the protective cover 7 and on the inner side of each protective plate 12. Connecting posts 15 are installed on the inner side of the protective plates 12 and through the corresponding two fixing sleeves 14. A spring 16 is installed at the inner end of the connecting post 15 and inside the fixing sleeve 14.

[0032] The ball bearing 13 is located on the outside of the protective plate 12 and is rotatably arranged. Several protective plates 12 are installed in a ring, which reduces the friction of external objects on the endoscope body 1.

[0033] The connecting post 15 is fixedly installed with the protective plate 12. The connecting post 15 slides through the inside of the fixed sleeve 14. The extension and retraction of the connecting post 15 improves the buffer of the endoscope body 1.

[0034] Specifically, when the endoscope body 1 approaches the object, the friction between the object and the endoscope body 1 is reduced through the contact and rotation of the ball bearing 13. The connecting column 15 extends and retracts through the spring 16, which improves the buffer of the endoscope body 1 and reduces the collision with the object.

[0035] In actual operation, the starting ends of the two independent optical fibers 3 correspond to the white light source and the ultraviolet light source respectively to perform auxiliary image imaging. The photosensitive camera 2 performs magnetic particle induction imaging to collect surface crack images of the parts or display the magnetic particle distribution on the uneven surface.

[0036] When guiding and blocking light, the protective cover 7 is connected to the front of the endoscope body 1 and fixed by the threaded connection between the connecting groove 11 and the threaded groove 4. At the same time, the light guide ring 8 is attached to the two light guide optical fibers 3. The protective sheet 10 is located in front of the photosensitive camera 2. The white light source or ultraviolet light source is evenly dispersed and irradiated onto the object surface through the light guide ring 8. The light blocking ring 9 reduces the interference of the light beam on the photosensitive camera 2. The protective sheet 10 is used to provide protection and reduce the entry of external dust and moisture.

[0037] When protection is applied, the endoscope body 1 is close to the object. The ball bearing 13 provides support to the endoscope body 1 through contact and rotation with the object surface, reducing friction between the object and the endoscope body 1. The connecting column 15 pushes the protective plate 12 outward under the action of the spring 16. The extension and retraction of the connecting column 15 provides buffering and reduces the collision caused by external objects.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switchable dual-light source structure for an endoscope, comprising an endoscope body (1), wherein a photosensitive camera (2) is centrally mounted on the front part of the endoscope body (1), two optical fibers (3) are disposed on the front part of the endoscope body (1), and a threaded groove (4) is formed on the outer surface of the endoscope body (1) near the front end, characterized in that: The photosensitive camera (2) is equipped with a light-blocking component (5), and the light-blocking component (5) is equipped with a protective component (6). The light-blocking component (5) includes a protective cover (7), which is connected to the front end of the endoscope body (1). A light guide ring (8) is installed on the inner ring of the protective cover (7) near the front end. A light-blocking ring (9) is installed on the inner ring of the light guide ring (8). A protective sheet (10) is installed on the inner ring of the light-blocking ring (9). A connecting groove (11) is provided on the inner wall of the protective cover (7) near the rear end.

2. The switchable dual-light source structure for an endoscope according to claim 1, characterized in that: The front end of the optical fiber (3) passes through the front part of the endoscope body (1), and both optical fibers (3) are arranged in a semi-circular ring.

3. The switchable dual-light source structure for an endoscope according to claim 1, characterized in that: The inner diameter of the rear end of the protective cover (7) matches the outer diameter of the endoscope body (1), and the connecting groove (11) and the threaded groove (4) are connected by a thread.

4. The switchable dual-light source structure for an endoscope according to claim 1, characterized in that: The inner and outer diameters of the light guide ring (8) are equal to the inner and outer diameters between the two light guide fibers (3), and the diameter of the protective sheet (10) is larger than the shooting range of the photosensitive camera (2).

5. The switchable dual-light source structure for an endoscope according to claim 1, characterized in that: The protective assembly (6) includes several protective plates (12), which are mounted around the outside of the protective cover (7). Several ball bearings (13) are movably installed on the outer side of the protective plates (12). Two fixing sleeves (14) are fixedly installed on the outer wall of the protective cover (7) and on the inner side of each protective plate (12). A connecting post (15) is installed on the inner side of the protective plate (12) and through the corresponding two fixing sleeves (14). A spring (16) is installed at the inner end of the connecting post (15) and inside the fixing sleeve (14).

6. The switchable dual-light source structure for an endoscope according to claim 5, characterized in that: The ball bearing (13) is located on the outside of the protective plate (12) and is rotatably arranged. Several protective plates (12) are arranged in a ring.

7. The switchable dual-light source structure for an endoscope according to claim 5, characterized in that: The connecting column (15) and the protective plate (12) are fixedly installed together, and the connecting column (15) slides through the inside of the fixed sleeve (14).

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