Magnifier capable of performing crack detection

Abstract

The magnifying lens comprises a handle, a lower lens ring, an upper lens ring, a main convex lens and a thin lens, the side wall of the lower lens ring is provided with a connecting seat, the connecting seat is movably connected to the bottom of the handle, the connecting seat is provided with an adjusting piece, the upper lens ring is movably arranged on the adjusting piece, and the main convex lens is arranged on the upper lens ring. The main convex lens is fixedly arranged on the lower lens ring, and the thin lens shell is detachably arranged on the upper lens ring. The utility model belongs to the technical field of magnifying glass frames, and particularly relates to a magnifying glass capable of detecting cracks.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnifying glass frames, in particular to a magnifying glass capable of detecting cracks. Background Art

[0002] Magnifying glasses are crucial for detecting and observing cracks on the surface of objects in many fields such as construction engineering, material testing, and cultural relic restoration.

[0003] Traditional magnifying glasses have relatively simple functions and are usually equipped with only a single lens structure, which makes it difficult to meet the observation needs of cracks of different depths and distances. Moreover, when facing the fine details of the cracks, such as width, depth changes and internal textures, ordinary magnifying glasses cannot provide high-resolution images due to problems such as aberrations, which hinders the accurate assessment of the crack condition. In addition, traditional magnifying glasses also have shortcomings in terms of ease of use. For example, it is difficult to adapt to the gripping habits and observation angles of different users, and it is not convenient to store and carry. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the traditional magnifying glass has a relatively single function and is usually equipped with only a single lens structure, which makes it difficult to meet the demand for accurate observation of cracks of different depths and distances.

[0005] In order to achieve the above functions, the technical solution adopted by the present invention is as follows: a magnifying glass capable of crack detection, comprising a handle, a lower lens ring, an upper lens ring, a main convex lens and a thin lens, the side wall of the lower lens ring being provided with a connecting seat, the connecting seat being movably connected to the bottom of the handle, an adjusting piece being provided on the connecting seat, the upper lens ring being movably provided on the adjusting piece, the main convex lens being fixedly provided on the lower lens ring, and the thin lens shell being detachably provided on the upper lens ring.

[0006] Preferably, the adjusting member includes a pillar, a screw and a sliding sleeve, the bottom end of the pillar is fixed on the connecting seat, the bottom end of the screw is rotatably arranged on the connecting seat, the sliding sleeve is threadedly connected to the screw and the sliding sleeve is arranged on the pillar, the upper lens ring is movably arranged on the sliding sleeve, and a handle is provided at the top of the screw.

[0007] Preferably, the side wall of the sliding sleeve is provided with a limiting groove, a slider is slidably provided on the limiting groove, there is friction between the slider and the limiting groove, the friction force can position the slider, and the side wall of the upper mirror ring is fixedly connected to the end of the slider.

[0008] Preferably, the inner side wall of the upper lens ring is threadedly connected with a pressing ring, and the thin lens is pressed into the upper lens ring by the pressing ring.

[0009] Preferably, a groove is provided at the bottom end of the handle, a fastening bolt passes through the connecting seat and the groove, a nut is threadedly connected to the fastening bolt, and the connecting seat is fastened to the groove through the nut.

[0010] Preferably, an LED light strip is provided around the bottom wall of the lower mirror ring.

[0011] Preferably, the bottom wall of the lower mirror ring is provided with a flat glass, and the flat glass is provided with a scale, which facilitates the measurement of the crack width.

[0012] The utility model adopts the above-mentioned structure to achieve the following beneficial effects: through the combination of the main convex lens and the thin lens, and in conjunction with the adjusting piece, the focal length can be adjusted to adapt to the observation of cracks at different depths and distances, thereby improving the flexibility and accuracy of detection, and different thin lenses can be replaced and their distances from the main convex lens can be adjusted to correct aberrations, so as to improve the resolution of the entire optical system, help to clearly present the fine details of the cracks, and provide more accurate data support for crack assessment; the adjustable design between the handle and the connecting seat and the foldable structure make it convenient for different users to adjust the angle according to their own needs, and it can be folded and stored when not in use, thereby improving the practicality and portability of the magnifying glass. At the same time, the LED light strip design of the lower lens ring can provide auxiliary lighting in low-light environments, and the width of the crack can be easily measured through the scale on the flat glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 2 The overall structure of the embodiment of the utility model is shown in FIG. Figure 2 ;

[0015] Figure 3 The overall structure of the embodiment of the utility model is shown in FIG. Figure 3 ;

[0016] Figure 4 The overall structure of the embodiment of the utility model is shown in FIG. Figure 4 .

[0017] Among them, 1. handle, 2. lower mirror ring, 3. upper mirror ring, 4. main convex lens, 5. thin lens, 6. connecting seat, 7. adjustment part, 8. pillar, 9. screw, 10. sleeve, 11. handle, 12. limit groove, 13. slider, 14. pressure ring, 15. groove, 16. fastening bolt, 17. nut, 18. LED light strip, 19. flat glass, 20. scale. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The present invention will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1 and 4 As shown, the present invention proposes a magnifying glass capable of crack detection, comprising a handle 1, a lower lens ring 2, an upper lens ring 3, a main convex lens 4 and a thin lens 5. The side wall of the lower lens ring 2 is provided with a connecting seat 6, and the bottom wall of the lower lens ring 2 is provided with an LED light strip 18, which can provide auxiliary lighting in an environment with insufficient light. The connecting seat 6 is movably connected to the bottom of the handle 1, and an adjusting member 7 is provided on the connecting seat 6. The upper lens ring 3 is movably provided on the adjusting member 7, the main convex lens 4 is fixedly provided on the lower lens ring 2, and the thin lens 5 is detachable. It is installed on the upper lens ring 3. When observing cracks, the cracks may be at different depths or at different distances from the observer. The main convex lens 4 and the thin lens 5 can adjust the focal length after being combined with the adjustment part 7. By changing the distance between the thin lens 5 and the main convex lens 4, the optical system can adapt to different observation distances. Cracks usually have very fine details, such as the width of the cracks, depth changes, internal textures, etc. By replacing different thin lenses 5 and adjusting their distances from the main convex lens 4, the aberrations can be corrected, thereby improving the resolution of the entire optical system.

[0021] like Figure 2As shown, the adjusting member 7 includes a pillar 8, a screw 9 and a sliding sleeve 10. The bottom end of the pillar 8 is fixed on the connecting seat 6, the bottom end of the screw 9 is rotatably set on the connecting seat 6, the sliding sleeve 10 is threadedly connected to the screw 9 and is slidably set on the pillar 8, the upper lens ring 3 is movably set on the sliding sleeve 10, and the top end of the screw 9 is provided with a handle 11. By rotating the handle 11, the sliding sleeve 10 moves up and down under the limit of the pillar 8 to adjust the distance between the thin lens 5 and the main convex lens 4 in the upper lens ring 3 on the sliding sleeve 10.

[0022] like Figure 1 As shown, the side wall of the sliding sleeve 10 is provided with a limiting groove 12, and a slider 13 is slidably provided on the limiting groove 12. There is friction between the slider 13 and the limiting groove 12, and the friction force can position the slider 13. The side wall of the upper mirror ring 3 is fixed to the end of the slider 13. Through the limiting groove 12, the thin lens 5 on the upper mirror ring 3 can be positioned so that the thin lens 5 is directly above the main convex lens 4. At the same time, when the thin lens 5 is not in use, the upper mirror ring 3 can be unscrewed from directly above the main convex lens 4.

[0023] like Figure 3 As shown, the inner wall of the upper lens ring 3 is threadedly connected with a pressing ring 14 , and the thin lens 5 is pressed into the upper lens ring 3 by the pressing ring 14 . The thin lens 5 can be replaced by unscrewing the pressing ring 14 .

[0024] like Figure 3-4 As shown, a groove 15 is provided at the bottom end of the handle 1, and a fastening bolt 16 is passed through the connecting seat 6 and the groove 15. A nut 17 is threadedly connected to the fastening bolt 16, and the connecting seat 6 is fastened to the groove 15 by the nut 17. By loosening the nut 17, the angle of the handle 1 can be adjusted to meet the needs of different users. At the same time, the setting of the groove 15 makes it convenient to fold the lower lens ring 2, the upper lens ring 3 and the handle 1 when not in use, and the adjustment member 7 is screwed into the groove 15.

[0025] like Figure 4 As shown, a flat glass 19 is provided on the bottom wall of the lower mirror ring 2 , and a scale 20 is provided on the flat glass 19 , which facilitates measurement of the crack width.

[0026] When in use, first select a suitable thin lens 5 according to the observation requirements, and install it in the upper lens ring 3 through the pressure ring 14. Then, if it is necessary to adjust the distance between the thin lens 5 and the main convex lens 4 to adapt to the observation distance of the crack, the handle 11 at the top of the screw 9 can be rotated to make the sliding sleeve 10 move up and down under the limit of the pillar 8, thereby driving the thin lens 5 in the upper lens ring 3 to move and realize the adjustment of the focal length. During the adjustment process, the friction between the slider 13 and the limit groove 12 can position the thin lens 5 to ensure that it is directly above the main convex lens 4. If the thin lens 5 is not needed, the upper lens ring 3 can be unscrewed from directly above the main convex lens 4.

[0027] When the angle of the handle 1 needs to be adjusted to suit different users, loosen the nut on the fastening bolt 16, adjust the handle 1 to a suitable angle and then tighten the nut. In a low-light environment, the LED light strip on the bottom wall of the lower lens ring 2 can be turned on for auxiliary lighting to more clearly observe the crack. After use, loosen the nut, fold the lower lens ring 2, upper lens ring 3 and handle 1, and screw the adjustment part 7 into the groove 15 at the bottom end of the handle 1 for easy storage and carrying.

[0028] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A magnifying glass capable of detecting cracks, characterized in that: The lens comprises a handle, a lower lens ring, an upper lens ring, a main convex lens and a thin lens. The side wall of the lower lens ring is provided with a connecting seat, the connecting seat is movably connected to the bottom of the handle, an adjusting piece is provided on the connecting seat, the upper lens ring is movably provided on the adjusting piece, the main convex lens is fixedly provided on the lower lens ring, and the thin lens is detachably provided on the upper lens ring.

2. A magnifying glass capable of crack detection according to claim 1, characterized in that: The adjusting part includes a pillar, a screw and a sliding sleeve. The bottom end of the pillar is fixed on the connecting seat, the bottom end of the screw is rotatably arranged on the connecting seat, the sliding sleeve is threadedly connected to the screw and the sliding sleeve is arranged on the pillar, the upper lens ring is movably arranged on the sliding sleeve, and a handle is provided at the top of the screw.

3. The magnifying glass capable of crack detection according to claim 2, characterized in that: The side wall of the sliding sleeve is provided with a limiting groove, and a slider is slidably provided on the limiting groove. There is friction between the slider and the limiting groove, and the friction force can position the slider. The side wall of the upper mirror ring is fixedly connected to the end of the slider.

4. The magnifying glass capable of crack detection according to claim 1, characterized in that: The inner side wall of the upper lens ring is threadedly connected with a pressing ring, and the thin lens is pressed into the upper lens ring by the pressing ring.

5. The magnifying glass capable of crack detection according to claim 1, characterized in that: A groove is provided at the bottom end of the handle, and a fastening bolt passes through the connecting seat and the groove. A nut is threadedly connected to the fastening bolt, and the connecting seat is fastened to the groove through the nut.

6. The magnifying glass capable of crack detection according to claim 1, characterized in that: An LED light strip is arranged around the bottom wall of the lower mirror ring.

7. The magnifying glass capable of crack detection according to claim 1, characterized in that: The bottom wall of the lower mirror ring is provided with a flat glass, and the flat glass is provided with scales.

Images