Camera lens protection structure

Abstract

The utility model relates to the technical field of protective structures, in particular to a camera lens protective structure, which comprises a protective cylinder detachably sleeved outside a lens main body, a clamping ring groove is arranged on the outer side wall of the lens main body along the circumferential direction of the lens main body, two ends of the protective cylinder are opened, and a detachable blanking cap is arranged at the outer end of the protective cylinder. Telescopic positioning pieces are uniformly distributed in the protection cylinder, and the positioning pieces extend into the clamping ring groove and are used for realizing fixation of the protection cylinder outside the lens main body. According to the utility model, through the telescoping of the telescopic cylinder at the inner end part of the protective cylinder, when the telescopic cylinder stretches out, a focal ring outside the lens main body can be covered and protected, so that the focal ring is protected, and when the telescopic cylinder retracts, the focal ring outside the lens main body can be exposed. And therefore, an operator can conveniently operate the focal ring to adjust the focal length of the lens main body, and the applicability of the protection structure is better.

Description

Technical Field

[0001] The utility model relates to the technical field of protection structures, and more specifically, to a protection structure for a camera lens. Background Art

[0002] The camera lens is one of the most important parts of a camera. It can focus light and form an image, which is a key factor determining the quality of a photo. However, the lens is usually relatively fragile and vulnerable to physical impacts, scratches, contamination and other factors. Therefore, a camera lens protection mechanism can effectively protect the lens, avoid these damages, and thus extend the service life of the lens.

[0003] For example, a lens protection structure of a camera disclosed in a Chinese patent with the publication number CN221239166U protects the camera lens by covering the camera lens with a protective cylinder. However, in actual use, for a zoom lens, a focusing ring for focal length adjustment is provided outside the camera lens. At this time, when the protective cylinder covers the camera lens for protection, it will affect the use of the focusing ring. When the focal length needs to be adjusted, it is necessary to repeatedly disassemble and assemble the protective cylinder, and the operation is rather inconvenient, so it needs to be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a protection structure for a camera lens to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A protection structure for a camera lens includes a protective cylinder detachably sleeved outside the lens body. A clamping ring groove is provided on the outer side wall of the lens body along its circumferential direction. Both ends of the protective cylinder are open. A detachable plug is provided at the outer end of the protective cylinder. Telescopic positioning members are evenly distributed inside the protective cylinder. The positioning members extend into the clamping ring groove to fix the protective cylinder outside the lens body. A telescopic cylinder is further provided at the inner end of the protective cylinder.

[0007] Further, an arc-shaped ring groove is provided on the inner side wall of the protective cylinder along its circumferential direction, and a plurality of arc-shaped ring grooves are distributed along the circumferential direction of the protective cylinder;

[0008] The positioning member includes an arc-shaped slider slidably arranged in the arc-shaped ring groove. A threaded rod that can rotate and penetrate through the protective cylinder and extend out is provided on the arc-shaped slider. Turning the threaded rod drives the arc-shaped slider to extend into the clamping ring groove to install the protective cylinder outside the lens body.

[0009] Further, a turning cap is provided at the extending end of the threaded rod.

[0010] Furthermore, a clamping groove is provided in the side wall of the protective tube along its circumferential direction, the opening of the clamping groove is arranged away from the blocking cover, and a limiting groove connected to the clamping groove is provided on the outer side wall of the protective tube along its axial direction;

[0011] One end of the telescopic cylinder is slidably installed in the clamping groove, and a limiting column is arranged outside the protective cylinder and penetrates the limiting groove and is threadedly connected to the telescopic cylinder.

[0012] Furthermore, a groove is provided on the side wall of the slot near the protective tube along its circumference, and the groove is relatively arranged at the two ends of the slot; a convex ring which can be inserted into the groove is provided on the side wall of the telescopic tube.

[0013] Furthermore, the lens body outer sleeve is provided with a movable ring member matched with the extended end of the telescopic tube, and the movable ring member is provided with a lap ring portion extending into the telescopic tube.

[0014] Furthermore, the extended end of the telescopic tube extends outward to form a toggle ring portion.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model, through the extension and retraction of the telescopic tube at the inner end of the protective tube, can cover and protect the focus ring outside the lens body when the telescopic tube is extended, so that it is protected; when the telescopic tube is retracted, the focus ring outside the lens body can be exposed, thereby facilitating the operator to operate the focus ring to adjust the focal length of the lens body, thereby making the applicability of the protective structure better.

[0017] 2. The utility model drives the arc-shaped slider to extend and retract in the arc-shaped ring groove by twisting the threaded rod, so that the arc-shaped slider can extend into or out of the clamping ring groove, thereby better realizing the disassembly and assembly of the protective tube at the outer end of the lens body, which is convenient for actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic structural diagram of a camera lens protection structure.

[0019] Figure 2 It is a structural schematic diagram of the lens body in the utility model.

[0020] Figure 3 It is a schematic diagram of the structure of the telescopic tube being installed on the lens body when the protective tube is retracted in the utility model.

[0021] Figure 4 It is a cross-sectional schematic diagram of the utility model when the telescopic tube extends out of the protective tube.

[0022] Figure 5 It is a half-section schematic diagram of the telescopic tube in the utility model when the protective tube is retracted.

[0023] Figure 6It is a half-section schematic diagram of the protective tube in the utility model.

[0024] Figure 7 It is a structural schematic diagram of the telescopic cylinder in the utility model.

[0025] Figure 8 It is a structural schematic diagram of the movable ring in the utility model.

[0026] The meanings of the numbers in the figure are as follows: 10, lens body; 20, protective tube; 30, telescopic tube; 40, blocking cover; 41, transparent glass; 50, moving ring; 201, snap-on ring groove; 202, snap-on interface; 210, focus ring; 410, arc-shaped slider; 420, threaded rod; 421, screw cap; 431, snap-on groove; 432, limit groove; 441, limit column; 501, step groove; 601, arc-shaped ring groove; 602, groove; 701, convex ring; 702, toggle ring portion; 800, moving ring; 801, overlapping ring portion. DETAILED DESCRIPTION

[0027] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0028] The following is combined with Figures 1 - 8 This embodiment is described in further detail.

[0029] See also Figures 1 - 8 A camera lens protection structure in this embodiment includes a protective tube 20 that can be detachably mounted on the outside of a lens body 10. A snap-on ring groove 201 is provided on the outer wall of the lens body 10 along its circumference. Both ends of the protective tube 20 are opened. A detachable plugging cover 40 is provided at the outer end of the protective tube 20. Retractable positioning members are evenly distributed inside the protective tube 20. The positioning members extend into the snap-on ring groove 201 to fix the protective tube 20 outside the lens body 10. A retractable telescopic tube 30 is also provided at the inner end of the protective tube 20.

[0030] In this embodiment, the lens body 10 is an existing zoom lens, one end of which forms a card interface 202 that is detachably connected to a camera. A focus ring 210 for adjusting the focal length is disposed outside the lens body 10. When the lens body 10 is installed on a camera, a protective tube 20 is mounted on the lens body 10 to protect it.

[0031] The protective tube 20 is opened at both ends, one end of which is the inner end, so that the protective tube 20 is mounted on the other end of the lens body 10, and the other end is the outer end for detachable installation of the blocking cover 40;

[0032] In actual use, a transparent glass 41 is embedded in the center of the blocking cover 40. By using the transparent glass 41, the image acquisition work of the lens body 10 is preferably achieved; Figure 5 As shown, a step groove 501 is formed at the outer end opening of the protective tube 20, and the plugging cover 40 is installed in the step groove 501 by means of threads to realize the detachable installation of the plugging cover 40, thereby facilitating the maintenance and replacement of the plugging cover 40.

[0033] In this embodiment, the snap-in ring groove 201 is arranged close to the outer end of the lens body 10. Through the arrangement of the positioning piece, in actual use, when the protective tube 20 is sleeved on the outer end of the lens body 10, the positioning piece is extended and retracted to make it snap into the snap-in ring groove 201, so that the protective tube 20 can be fixedly installed at the outer end of the lens body 10. By retracting the positioning piece, it can be disengaged from the snap-in ring groove 201, so that the fixation of the protective tube 20 can be released and the protective tube 20 can be removed.

[0034] Among them, through the setting of the telescopic tube 30, in actual use, when the telescopic tube 30 is extended out of the protective tube 20, the focus ring 210 outside the lens body 10 can be covered and protected. At the same time, the telescopic tube 30 is retracted into the protective tube 20 to expose the focus ring 210 outside the lens body 10, which is convenient for the operator to adjust the focal length of the lens body 10 through the focus ring 210.

[0035] Combination Figures 4 - 6 As shown, in this embodiment, an arcuate annular groove 601 is provided on the inner side wall of the protective tube 20 along its circumference, and a plurality of arcuate annular grooves 601 are distributed along the circumference of the protective tube 20;

[0036] The positioning member includes an arc-shaped slider 410 slidingly arranged in the arc-shaped ring groove 601, and a rotatable threaded rod 420 is provided on the arc-shaped slider 410 and threadedly penetrates through the protective tube 20 and extends out. Twisting the threaded rod 420 drives the arc-shaped slider 410 to extend into the clamping ring groove 201 to realize the installation of the protective tube 20 outside the lens body 10.

[0037] In actual use of this embodiment, the number of arcuate annular grooves 601 is set to 3, and positioning members are arranged in each of them; wherein the shape of the arcuate slider 410 is adapted to the shape of the arcuate annular groove 601, even if the arcuate slider 410 is restricted so that it can only extend or retract into the arcuate annular groove 601;

[0038] One end of the threaded rod 420 is rotatably mounted on the arc-shaped slider 410 through a bearing, so that the arc-shaped slider 410 can be driven to extend out of the arc-shaped ring groove 601 by twisting the protruding end of the threaded rod 420, so that the arc-shaped slider 410 is inserted into the clamping ring groove 201, and the protective tube 20 can be fixed. The arc-shaped slider 410 can be driven to retract into the arc-shaped ring groove 601 by twisting the protruding end of the threaded rod 420 in the opposite direction, so that the arc-shaped slider 410 is disengaged from the clamping ring groove 201, so that the protective tube 20 can be disassembled.

[0039] In actual use, in order to facilitate the operator to drive the threaded rod 420 to rotate, a screw cap 421 is provided at the protruding end of the threaded rod 420, and wear-resistant grooves are distributed on the outer wall of the screw cap 421, thereby facilitating the operator to rotate the threaded rod 420 by screwing the cap 421.

[0040] In this embodiment, a clamping groove 431 is provided in the side wall of the protective tube 20 along its circumferential direction, and the opening of the clamping groove 431 is arranged away from the plug cover 40. A limiting groove 432 communicating with the clamping groove 431 is provided on the outer side wall of the protective tube 20 along its axial direction.

[0041] One end of the telescopic cylinder 30 is slidably installed in the clamping groove 431 , and a limiting column 441 is provided outside the protective cylinder 20 and penetrates the limiting groove 432 and is threadedly connected to the telescopic cylinder 30 .

[0042] In this embodiment, by setting the card slot 431, it is preferable to make the telescopic tube 30 slide and set in the card slot 431, that is, to realize the telescopic setting of the telescopic tube 30 at the inner end of the protective tube 20;

[0043] The movement of the telescopic tube 30 in the slot 431 is restricted by the cooperation of the limiting slot 432 and the limiting column 441 , so that the telescopic tube 30 will not be separated from the protective tube 20 .

[0044] Combination Figure 6 and Figure 7 As shown, in this embodiment, a groove 602 is provided on the side wall of the slot 431 close to the protective tube 20 along its circumference, and the grooves 602 are relatively arranged at the two ends of the slot 431; a convex ring 701 that can be inserted into the groove 602 is provided on the side wall of the telescopic tube 30.

[0045] In this embodiment, the convex ring 701 is made of rubber material, so that it has better deformation ability. When the convex ring 701 slides against the side wall of the slot 431, the friction force makes it difficult for the telescopic cylinder 30 to slide in the slot 431. In particular, through the matching arrangement of the groove 602 and the convex ring 701, in actual use, the operator drives the telescopic cylinder 30 to slide in the slot 431 through a large external force, so that the convex ring 701 is snapped into the corresponding groove 602 to fix the telescopic cylinder 30. In particular, the grooves 602 are relatively arranged at the two ends of the slot 431. Therefore, when the convex ring 701 is snapped into the groove 602 at the inner end, the telescopic cylinder 30 can be kept in a state of being retracted in the protective cylinder 20. When the convex ring 701 is snapped into the outer groove 602, the telescopic cylinder 30 can be kept in a state of being extended out of the protective cylinder 20, thereby facilitating the actual use of the protective structure.

[0046] In actual use, in order to facilitate the operator to move the telescopic cylinder 30 , the protruding end of the telescopic cylinder 30 extends outward to form a moving ring portion 702 .

[0047] Combination Figure 8 As shown, in this embodiment, the lens body 10 is provided with a movable ring 50 that matches with the extended end of the telescopic tube 30 , and the movable ring 50 is provided with a lap ring portion 801 that extends into the telescopic tube 30 .

[0048] In actual use of this embodiment, the movable ring 50 is spliced ​​and installed on the outside of the lens body 10 through the relative movable ring 800, wherein, through the setting of the overlapping ring portion 801, when the telescopic tube 30 is extended to protect the focus ring 210 outside the lens body 10, the extended end of the telescopic tube 30 can be inserted into the outside of the overlapping ring portion 801, so that the overlapping ring portion 801 supports the inner side wall of the extended end of the telescopic tube 30, thereby improving the strength of the telescopic tube 30, making it less susceptible to deformation caused by bumps, which affects its protection of the lens body 10.

[0049] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A protective structure for a camera lens, comprising a protective cylinder (20) detachably sleeved outside the lens body (10), characterized in that: A snap ring groove (201) is provided on the outer wall of the lens body (10) along its circumference, the protective tube (20) is provided with openings at both ends, a detachable plugging cover (40) is provided at the outer end of the protective tube (20), and retractable positioning members are evenly distributed inside the protective tube (20), and the positioning members extend into the snap ring groove (201) to achieve the fixing of the protective tube (20) outside the lens body (10); a retractable telescopic tube (30) is also provided at the inner end of the protective tube (20).

2. The protective structure for a camera lens according to claim 1, wherein: An arcuate annular groove (601) is provided on the inner side wall of the protective tube (20) along its circumference, and a plurality of arcuate annular grooves (601) are distributed along the circumference of the protective tube (20); The positioning member comprises an arc-shaped slider (410) slidably arranged in the arc-shaped ring groove (601), and a threaded rod (420) is rotatably arranged on the arc-shaped slider (410) and threadedly penetrates through the protective tube (20) and extends out, and the threaded rod (420) is turned to drive the arc-shaped slider (410) to extend into the clamping ring groove (201) to realize the installation of the protective tube (20) outside the lens body (10).

3. The protective structure for a camera lens according to claim 2, wherein: The protruding end of the threaded rod (420) is provided with a screw cap (421).

4. The protective structure for a camera lens according to claim 1, characterized in that: A clamping groove (431) is provided in the side wall of the protective tube (20) along its circumferential direction, the opening of the clamping groove (431) is arranged away from the blocking cover (40), and a limiting groove (432) communicating with the clamping groove (431) is provided on the outer side wall of the protective tube (20) along its axial direction; One end of the telescopic cylinder (30) is slidably mounted in the clamping groove (431), and a limiting column (441) is provided outside the protective cylinder (20) and penetrates the limiting groove (432) and is threadedly connected to the telescopic cylinder (30).

5. The protective structure of a camera lens according to claim 4, characterized in that: A groove (602) is provided on the side wall of the slot (431) close to the protective tube (20) along its circumference, and the grooves (602) are relatively arranged at the two ends of the slot (431); a convex ring (701) that can be inserted into the groove (602) is provided on the side wall of the telescopic tube (30).

6. The protective structure for a camera lens according to claim 4, wherein: The lens body (10) is provided with a movable ring (50) matched with the extended end of the telescopic tube (30) on its outer sleeve, and a lap ring portion (801) extending into the telescopic tube (30) is provided on the movable ring (50).

7. The protective structure for a camera lens according to claim 4, wherein: The extended end of the telescopic cylinder (30) extends outward to form a toggle ring portion (702).

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