limiting device

Abstract

The utility model belongs to technical field of lens, disclose limiting position device, limiting position device includes limit seat and limit support, limit seat is used for limiting lens base, limit support is used for limiting circle, when lens base is limited in limit seat, circle is limited in limit support, and the both of lens base and circle are opposite static along the axial direction of lens base. The utility model discloses through the limit seat and limit support among limiting position device can be respectively to lens base and circle carry out the limiting, to this guarantee both in the imaging verification, position no longer change, and can not relatively rotate, in order to the process of subsequent installation lens circle will not follow lens synchronous rotation, also need not to adjust the position of circle again, guarantee the installation position between circle and lens base satisfies the demand, to this improve test assembly when can be accurate, fast, simple and easy installation to lens base and circle, improve the stability while guaranteeing installation efficiency, realize quick verification.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to a limiting device. Background Technology

[0002] The autofocus ring (or focusing ring) in a lens changes the distance between the plane and the lens to ensure the subject is in sharp focus. Therefore, during installation, the lens, focusing ring, and lens mount need to be assembled as a whole for image verification. However, there are specific positional requirements between the focusing ring and the lens mount. During installation, the focusing ring is driven up and down by a motor and fixed in place by a limiting pin. However, during verification, the motor needs to be removed. Regardless of whether the limiting pin is removed, if the focusing ring is not fixed, it will rotate synchronously with the lens during installation, easily leading to the focusing ring falling off, making subsequent lens assembly and disassembly difficult. Currently, verification often involves manually controlling the focusing ring's position during assembly—that is, manually adjusting the focusing ring after tightening the lens, and then locking the lens mount. This is not only overly cumbersome but also overly complex.

[0003] Therefore, ensuring that the mounting position between the adjustment ring and the lens base meets the requirements during the lens installation process, and that the position of the adjustment ring does not change, so as to achieve accurate, quick, and simple installation for verification testing, is a problem that needs to be solved by those in this field. Utility Model Content

[0004] The purpose of this utility model is to provide a limiting device to ensure that the installation position between the adjustment ring and the lens base meets the requirements when the lens is installed during the verification process, and that the position of the adjustment ring does not change, so as to achieve accurate, quick and easy installation for verification tests.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A limiting device for fixing the lens base and the adjustment ring, comprising:

[0007] A limiting seat, used to limit the lens base;

[0008] A limit bracket is used to limit the movement of the adjustment ring;

[0009] When the lens base is positioned within the limiting seat, the adjusting ring is positioned within the limiting bracket, and the lens base and the adjusting ring remain relatively stationary along the axial direction of the lens base.

[0010] Optionally, the lens base is provided with a plurality of positioning posts, and the limiting seat is provided with a plurality of grooves, the grooves being provided in correspondence with the positioning posts, and the positioning posts being able to be limited in the grooves.

[0011] Optionally, the limiting seat is also provided with a flared opening, which corresponds one-to-one with the groove and the two are interconnected, and the positioning post can slide into the corresponding groove through the flared opening.

[0012] Alternatively, the cross-sectional area of ​​the flared opening gradually decreases from the side away from the groove to the side closer to the groove.

[0013] Optionally, the limiting bracket includes a first fixing part, a second fixing part, and a limiting part, with both ends of the limiting part connected to the first fixing part and the second fixing part, and the first fixing part and the second fixing part connected to the limiting seat.

[0014] Optionally, the limiting part is configured as an arc-shaped structure, and the two ends of the limiting part form a first limiting surface and a second limiting surface. The adjusting ring is provided with two abutting surfaces in the circumferential direction, one of which abuts against the first limiting surface and the other abuts against the second limiting surface.

[0015] Optionally, the limiting bracket is provided with a clearance opening through which the locking accessory for fixing the lens base and the adjusting ring can pass.

[0016] Optionally, the limiting seat and the limiting bracket can be detachably connected.

[0017] Optionally, the limiting seat and the limiting bracket are fixedly connected by screws.

[0018] Optionally, the limiting bracket is provided with a clearance groove to avoid the lens base.

[0019] The beneficial effects of this utility model are:

[0020] In this invention, the limiting seat and limiting bracket in the limiting device can respectively limit the position of the lens base and the adjustment ring, thereby ensuring that their positions do not change during imaging verification and that they cannot rotate relative to each other. This prevents the adjustment ring from rotating synchronously with the lens during subsequent lens installation, eliminating the need for readjustment of the adjustment ring's position. This ensures that the installation position between the adjustment ring and the lens base meets the requirements, improving the accuracy, speed, and ease of installation of the lens base and adjustment ring during experimental assembly. It also enhances stability, ensures installation efficiency, and enables rapid verification. Furthermore, the limiting device can fix the positions of the lens base and adjustment ring in the lens assembly, preventing movement of these components during lens installation. Attached Figure Description

[0021] Figure 1This is a first axonometric view of the limiting device and lens assembly as described in this embodiment of the present invention during installation;

[0022] Figure 2 This is a second isometric view of the limiting device and lens assembly as described in this embodiment of the invention during installation;

[0023] Figure 3 This is a first axonometric view of the lens assembly described in this embodiment of the present invention;

[0024] Figure 4 This is a second axonometric view of the lens assembly described in this embodiment of the present invention;

[0025] Figure 5 This is a top view of the limiting device and lens assembly as described in this embodiment of the utility model during installation.

[0026] Figure 6 This is a schematic diagram of the positioning pin inserted into the groove in the limiting device described in this embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the limiting device described in an embodiment of the present invention;

[0028] Figure 8 This is a first isometric view of the limiting seat in the limiting device described in this embodiment of the utility model;

[0029] Figure 9 This is a second isometric schematic diagram of the limiting seat in the limiting device described in this embodiment of the utility model;

[0030] Figure 10 This is a first isometric view of the limiting bracket in the limiting device described in this embodiment of the utility model;

[0031] Figure 11 This is a second isometric view of the limiting bracket in the limiting device described in this embodiment of the utility model.

[0032] In the picture:

[0033] 100 - Lens mount; 200 - Adjustment ring; 300 - Lens; 10 - Limiting seat; 20 - Limiting bracket;

[0034] 101-Positioning pin; 102-Positioning groove; 110-Locking accessory; 201-Abutting surface; 202-Positioning protrusion;

[0035] 11-Groove; 12-Flanged opening; 13-First fixing hole; 14-Mounting slot;

[0036] 21-First fixing part; 211-Second fixing hole; 22-Second fixing part; 221-Third fixing hole; 23-Limiting part; 231-First limiting surface; 232-Second limiting surface; 233-Third limiting surface; 24-Avoidance opening. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and specific implementation methods.

[0041] like Figures 1-2As shown, this embodiment provides a limiting device for fixing a lens base 100 and an adjusting ring 200. Specifically, the limiting device includes a detachably connected limiting seat 10 and a limiting bracket 20. The limiting seat 10 limits the lens base 100, and the limiting bracket 20 limits the adjusting ring 200. When the lens base 100 is limited in the limiting seat 10, the adjusting ring 200 is limited in the limiting bracket 20, and the lens base 100 and the adjusting ring 200 are relatively stationary along the axial direction of the lens base 100, meaning they cannot rotate relative to each other, thus ensuring stable installation of the lens base 100 and the adjusting ring 200. Exemplarily, in other embodiments, the limiting seat 10 and the limiting bracket 20 can also be configured as an integrated structure to improve the mechanical strength of the limiting device. This is not limited here and can be configured according to actual needs. Optionally, the axial direction of the lens base 100 and the adjusting ring 200 is set to a first direction.

[0042] Combination Figure 3 and Figure 4 As shown, specifically, a plurality of positioning posts 101 are provided on the side of the lens base 100 opposite to the adjusting ring 200, and a positioning groove 102 is provided on the side of the lens base 100. Optionally, in this embodiment, two positioning posts 101 are provided, and the positions of the two positioning posts 101 are located at opposite corners of the bottom surface of the lens base 100. Further, the adjusting ring 200 is provided with two abutment surfaces 201 and a positioning protrusion 202 in its circumferential direction. Specifically, when both the lens base 100 and the adjusting ring 200 are confined in the limiting device, the positioning groove 102 and the positioning protrusion 202 are positioned opposite each other, thereby ensuring the accuracy of the positioning and installation of the lens base 100 and the adjusting ring 200, improving the accuracy of the lens assembly installation, and avoiding repeated manual adjustments. Exemplarily, the positioning protrusion 202 is set as a triangular structure, and the positioning groove 102 is set as a square groove, so that the operator can observe and check whether the two are aligned. In other embodiments, the shapes of the two can also be set as needed, which will not be elaborated here.

[0043] like Figures 5-9 As shown, in this embodiment, the limiting seat 10 is provided with a plurality of grooves 11, and the grooves 11 are correspondingly arranged with the positioning posts 101. The positioning posts 101 can be confined in the grooves 11 to ensure the stable installation of the lens base 100 on the limiting seat 10. Exemplarily, two grooves 11 are provided, and both grooves 11 extend along a second direction. Optionally, the second direction is perpendicular to the first direction. Specifically, the distance between the two grooves 11 corresponds to the distance between the two positioning posts 101, so that the two positioning posts 101 can be fixed simultaneously in the two grooves 11 respectively.

[0044] Specifically, the limiting seat 10 is provided with a flared opening 12, which corresponds one-to-one with the groove 11, and the flared opening 12 and the groove 11 are interconnected. The positioning post 101 can slide into the corresponding groove 11 through the flared opening 12, thereby guiding the positioning post 101 through the flared opening 12 and improving installation efficiency. Optionally, two flared openings 12 are provided, and each flared opening 12 is located on the side of the groove 11 away from the limiting bracket 20. For example, the cross-sectional area of ​​the flared opening 12 gradually decreases from the side away from the groove 11 to the side closer to the groove 11, until the cross-sectional area of ​​the flared opening 12 is the same as the cross-sectional area of ​​the groove 11, thereby quickly guiding the positioning post 101.

[0045] Optionally, the limiting seat 10 has a first fixing hole 13 extending through it along a first direction on the side opposite to the flared opening 12, for connection to the limiting bracket 20. Specifically, two first fixing holes 13 are provided, and the two first fixing holes 13 are spaced apart. Figure 9 As shown, the limiting seat 10 is further provided with a downward-facing mounting groove 14 along the first direction, and the mounting groove 14 is connected to the first fixing hole 13. Thus, the screw can be screwed into the first fixing hole 13 through the mounting groove 14, so that the operator can disassemble and assemble the limiting seat 10 and the limiting bracket 20, and can hide the screw during installation.

[0046] like Figure 10 and Figure 11 As shown, in this embodiment, the limiting bracket 20 includes a first fixing part 21, a second fixing part 22, and a limiting part 23. Specifically, the limiting part 23 is configured with an arc-shaped structure, and the arc of the limiting part 23 is adapted to the arc of the adjusting ring 200. Further, the two ends of the limiting part 23 are respectively connected to the first fixing part 21 and the second fixing part 22 to ensure the height setting of the limiting part 23, which facilitates the limiting of the adjusting ring 200. Specifically, the first fixing part 21 and the second fixing part 22 are connected to the limiting seat 10 by screws, thereby realizing the fixed connection between the limiting seat 10 and the limiting bracket 20.

[0047] Optionally, the bottom of the first fixing part 21 is provided with a second fixing hole 211 along the first direction, and the bottom of the second fixing part 22 is provided with a third fixing hole 221 along the first direction. The positions of the second fixing hole 211 and the third fixing hole 221 correspond to the positions of the two first fixing holes 13. By sequentially passing screws through the first fixing holes 13, the second fixing hole 211, and the first fixing holes 13 and the third fixing holes 221, the limiting bracket 20 and the limiting seat 10 can be stably connected. Furthermore, the first fixing part 21 and the second fixing part 22 in the limiting bracket 20 are both set as L-shaped structures, and the L-shaped structure forms a clearance groove, which can avoid the lens base 100 and ensure that the lens base 100 and the adjusting ring 200 are stably installed.

[0048] Combination Figure 5 As shown, further, the limiting part 23 has a first limiting surface 231 and a second limiting surface 232 formed at both ends, and a third limiting surface 233 is provided on the side of the limiting part 23 facing the adjusting ring 200. Optionally, the first limiting surface 231 is provided at the end of the limiting part 23 near the first fixing part 21, and the second limiting surface 232 is provided at the end of the limiting part 23 near the second fixing part 22. Specifically, one of the two circumferential abutting surfaces 201 of the adjusting ring 200 abuts against the first limiting surface 231, and the other abuts against the second limiting surface 232. At this time, the side of the adjusting ring 200 can abut against the third limiting surface 233, thereby limiting the position of the adjusting ring 200 and preventing the adjusting ring 200 from rotating subsequently. For example, the first limiting surface 231 and the second limiting surface 232 are made with beveled edges so that they can correspond to the two abutting surfaces 201 of the adjusting ring 200 and ensure that the positioning groove 102 and the positioning protrusion 202 can be simultaneously aligned after the position of the adjusting ring 200 is fixed.

[0049] In summary, in this embodiment, the limiting seat 10 limits the positioning post 101 of the lens base 100 through the groove 11, allowing it to move only in the second direction. Simultaneously, the first limiting surface 231 and the second limiting surface 232 on the limiting bracket 20 circumferentially limit the adjusting ring 200, allowing it to move only axially and not rotate. This restricts the positions of the lens base 100 and the adjusting ring 200. Correspondingly, the limiting seat 10 and the limiting bracket 20 also ensure that when the lens base 100 and the adjusting ring 200 are limited, the positioning groove 102 and the positioning protrusion 202 on both are aligned, ensuring precise installation, improving installation efficiency, and avoiding repeated adjustments.

[0050] Furthermore, after the lens base 100 and the adjustment ring 200 are accurately aligned, the locking accessory 110 can be used to lock them together. For example, in this embodiment, the first fixing part 21, the second fixing part 22, and the limiting part 23 are arranged to form a clearance opening 24, which extends through the lens in the second direction. Thus, the locking accessory 110 can pass through the clearance opening 24 to lock and position the lens base 100 and the adjustment ring 200, completing their stable installation.

[0051] Combination Figure 4 and Figure 5As shown, in this embodiment, the lens assembly includes a lens base 100, an adjustment ring 200, and a lens 300 connected in sequence. The lens base 100 and adjustment ring 200 are installed after the aforementioned limiting device, and then the lens 300 is installed. This ensures that the positions of the lens base 100 and adjustment ring 200 do not change during the lens 300 installation process, thereby achieving accurate lens assembly installation. Furthermore, by utilizing the clearance slot 24, screws can be used to lock the lens base 100 after the lens 300 is tightened, ensuring the overall stability of the lens assembly.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A limiting device for fixing a lens base (100) and an adjusting ring (200), characterized in that, include: A limiting seat (10) is used to limit the lens base (100); A limiting bracket (20) is used to limit the adjustment ring (200); When the lens base (100) is located in the limiting seat (10), the adjusting ring (200) is located at the limiting bracket (20), and the lens base (100) and the adjusting ring (200) are relatively stationary along the axial direction of the lens base (100).

2. The limiting device according to claim 1, characterized in that, The lens base (100) is provided with a plurality of positioning posts (101), and the limiting seat (10) is provided with a plurality of grooves (11). The grooves (11) are correspondingly provided with the positioning posts (101), and the positioning posts (101) can be limited to the grooves (11).

3. The limiting device according to claim 2, characterized in that, The limiting seat (10) is also provided with a flared mouth (12), the flared mouth (12) corresponds one-to-one with the groove (11) and the two are interconnected, and the positioning post (101) can slide into the corresponding groove (11) from the flared mouth (12).

4. The limiting device according to claim 3, characterized in that, The cross-sectional area of ​​the flared opening (12) gradually decreases from the side away from the groove (11) to the side closer to the groove (11).

5. The limiting device according to claim 1, characterized in that, The limiting bracket (20) includes a first fixing part (21), a second fixing part (22) and a limiting part (23). The two ends of the limiting part (23) are respectively connected to the first fixing part (21) and the second fixing part (22). The first fixing part (21) and the second fixing part (22) are connected to the limiting seat (10).

6. The limiting device according to claim 5, characterized in that, The limiting part (23) is configured as an arc-shaped structure, and the two ends of the limiting part (23) form a first limiting surface (231) and a second limiting surface (232). The adjusting ring (200) is provided with two abutting surfaces (201) in the circumferential direction. One of the two abutting surfaces (201) abuts against the first limiting surface (231), and the other abuts against the second limiting surface (232).

7. The limiting device according to claim 1, characterized in that, The limiting bracket (20) has a through-hole (24) through which the locking accessory (110) for fixing the lens base (100) and the adjusting ring (200) can pass through the through-hole (24).

8. The limiting device according to claim 1, characterized in that, The limiting seat (10) and the limiting bracket (20) are detachably connected.

9. The limiting device according to claim 8, characterized in that, The limiting seat (10) and the limiting bracket (20) are fixedly connected by screws.

10. The limiting device according to claim 1, characterized in that, The limiting bracket (20) is provided with a clearance groove to avoid the lens base (100).

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