Centring clamping device for a lens

Abstract

The application discloses a centripetal clamping device for a lens, and belongs to the technical field of optical equipment. The device comprises a base plate, a hole for placing the lens is formed in the middle of the base plate, a plurality of radial sliding grooves are arranged on the upper surface of the base plate, a clamping block capable of sliding along the radial sliding groove is arranged in each radial sliding groove, and a guide pin is arranged on the upper part of the clamping block; a rotating disc is arranged opposite to the base plate and can rotate relative to the base plate, a plurality of guide grooves matched with the guide pins are arranged on the rotating disc, when the rotating disc rotates, the guide pins slide in the guide grooves and drive the plurality of clamping blocks to move centripetally or centrifugally synchronously to clamp or loosen the lens; and a handle structure is used for rotating the rotating disc and adjusting the clamping force of the clamping blocks on the lens. The device has the advantages of simple structure, small size, low cost and suitability for clamping different models of lenses.

Description

Technical Field

[0001] This application belongs to the field of optical equipment technology, and in particular relates to a centripetal clamping device for a lens. Background Technology

[0002] In the field of lens inspection, it is often necessary to clamp and fix the lens under test to ensure the stability and accuracy of the test. However, the commonly used lens clamping devices are usually planar thread plus gear structure, gear and rack structure or synchronous belt mechanism. These clamping devices are usually large in size, and the structural parts are processed and assembled with high precision, which leads to a significant increase in cost. They are not very practical for tiny lenses in fields such as automotive and drones. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the related art. To this end, this application proposes a centripetal clamping device for lenses, which has a simple structure, small size, low cost, and can be applied to clamping different types of lenses.

[0004] In a first aspect, this application provides a centripetal clamping device for a lens, comprising: The chassis has a hole in the middle for placing the lens, and a plurality of radial grooves are provided on the upper surface of the chassis. Each radial groove is provided with a clamping block that can slide along the radial groove, and a guide pin is provided on the upper part of the clamping block. A rotating disk is disposed opposite to the chassis and can rotate relative to the chassis. The rotating disk is provided with a plurality of guide grooves that are adapted to the guide pins. When the rotating disk rotates, the guide pins slide in the guide grooves and drive the plurality of clamping blocks to move synchronously in a centripetal or centrifugal manner to clamp or release the lens. A handle structure is provided for rotating the rotary disk and adjusting the clamping force of the clamping block on the lens.

[0005] In some embodiments, the handle structure includes: A handle is fixedly mounted on the rotating disk for rotating the rotating disk. The handle is provided with a plurality of mounting holes arranged sequentially along the radial direction of the rotating disk. The support column is fixedly mounted on the chassis; An elastic element is disposed on the support column, and the end of the elastic element facing the handle can be hooked and connected with the mounting hole.

[0006] In some embodiments, the elastic element is a spring, and the end of the spring facing the handle is provided with a hook for engaging with different mounting holes.

[0007] In some embodiments, the size of the plurality of mounting holes increases sequentially along the direction away from the holes.

[0008] In some embodiments, the range of the rotatable angle of the handle is greater than the range of the length of the elastic element, and when the handle is rotated to the support post, the guide pin slides to the side of the guide groove closest to the hole.

[0009] In some embodiments, the end of the handle closer to the rotating disk is smaller than the end farther from the rotating disk.

[0010] In some embodiments, the number of radial grooves is even, and the even number of radial grooves are symmetrically arranged on the upper surface of the chassis.

[0011] In some embodiments, the guide groove is an arc-shaped groove with one end close to the hole and the other end away from the hole.

[0012] In some embodiments, a guide sleeve is further included, which is fitted onto the guide pin.

[0013] In some embodiments, the clamping block is arc-shaped at one end facing the hole, and the clamping block is made of a flexible material.

[0014] The above-described one or more technical solutions in the embodiments of this application have at least the following technical effects: The centripetal clamping device for lenses provided in this application has a hole formed in the middle of the base for placing the lens, and multiple radial grooves are provided on the upper surface of the base. Each radial groove is provided with a clamping block that can slide radially. The upper part of the clamping block is provided with a guide pin, which is used to fit into the guide groove provided on the rotating disk. When the rotating disk is rotated, the guide pin slides in the guide groove and drives the multiple clamping blocks to move synchronously centripetally or centrifugally to clamp or release the lens. At the same time, the device is also provided with a handle structure, which is used to rotate the rotating disk and adjust the clamping force of the clamping blocks to avoid the clamping blocks clamping the lens too tightly or too loosely. The centripetal clamping device has a simple structure, small size, and low cost. And because the handle structure can adjust the clamping force of the clamping blocks, it can be compatible with different models and specifications of lenses.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the centripetal clamping device for a lens provided in an embodiment of this application; Figure 2 This is a cross-sectional structural schematic diagram of the centripetal clamping device for a lens provided in an embodiment of this application; Figure 3 This is a partial structural schematic diagram of the centripetal clamping device for a lens provided in an embodiment of this application; Reference numerals: 1-Rotating disk; 2-Lens; 3-Guide pin; 4-Guide sleeve; 5-Handle; 6-Elastic element; 7-Support column; 8-Clamping block; 9-Chassis; 10-Guide groove. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0018] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] The centripetal clamping device for lenses provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0020] like Figures 1 to 3 As shown, this application embodiment provides a centripetal clamping device for a lens 2, comprising: A base 9 has a hole in its center for placing the lens 2. The upper surface of the base 9 has multiple radial grooves, each containing a clamping block 8 that can slide along the groove. A guide pin 3 is located on the upper part of each clamping block 8. A rotating disk 1 is positioned opposite the base 9 and can rotate relative to it. The rotating disk 1 has multiple guide grooves 10 that mate with the guide pins 3. When the rotating disk 1 rotates, the guide pins 3 slide in the guide grooves 10, causing the clamping blocks 8 to move synchronously centripetally or centrifugally to clamp or release the lens 2. A handle structure is used to rotate the rotating disk 1 and adjust the clamping force of the clamping blocks 8 on the lens 2.

[0021] The centripetal clamping device for lens 2 provided in this application has a hole formed in the middle of the base 9 for placing lens 2, and multiple radial grooves are provided on the upper surface of the base 9. Each radial groove is provided with a clamping block 8 that can slide radially. The upper part of the clamping block 8 is provided with a guide pin 3, which is used to fit into the guide groove 10 provided on the rotating disk 1. When the rotating disk 1 is rotated, the guide pin 3 slides in the guide groove 10 and drives multiple clamping blocks 8 to move synchronously centripetally or centrifugally to clamp or release lens 2. At the same time, the device is also provided with a handle structure, which is used to rotate the rotating disk 1 and adjust the clamping force of the clamping block 8 to avoid clamping lens 2 too tightly or too loosely. The centripetal clamping device has a simple structure, small size, and low cost. Since the handle structure can adjust the clamping force of the clamping block 8, it can be compatible with different models and specifications of lens 2.

[0022] It should be noted that the lens 2 in this embodiment can be the lens under test. That is, the centripetal clamping device is a tool for moving the lens 2 in the lens testing device, avoiding direct hand contact with the lens 2 and thus preventing damage to the lens 2. The lens 2 can be a vehicle lens, a drone lens, an endoscope lens, etc.

[0023] Understandably, in order for the clamping block 8 to move closer to or further away from the hole in the center of the chassis 9, the guide groove 10 is an arc-shaped groove with one end close to the hole and the other end away from the hole. For example... Figure 1 As shown, when the guide pin 3 slides from the end of the guide groove 10 away from the hole to the end near the hole, the clamping block 8 moves centripetally; when the guide pin 3 slides from the end of the guide groove 10 near the hole to the end away from the hole, the clamping block 8 moves centrifugally.

[0024] In some embodiments, the clamping block 8 is elongated and installed in a corresponding radial groove. The length of the clamping block 8 is less than the length of the radial groove, so that when the clamping block 8 moves centripetally or centrifugally in the corresponding radial groove, it does not exceed the range of the radial groove, that is, it does not protrude beyond the rotating disk 1 and the base plate 9, making the centripetal clamping device compact and simple. Understandably, the radial groove is fixedly set on the upper surface of the base plate 9, and the movement of the clamping block 8 is achieved by the movement of the guide groove 10 relative to the guide pin 3.

[0025] In some embodiments, to adapt the guide pin 3 to the guide groove 10, the cross-section of the guide pin 3 is T-shaped, and the base 9 of the guide groove 10 has two support blocks that support the head of the guide pin 3. The distance between the two support blocks is adapted to the size of the guide pin 3. It is understood that any structure that can achieve the adaptation between the guide pin 3 and the guide groove 10 is acceptable, and this application does not limit it.

[0026] In some embodiments, the centripetal clamping device further includes a guide sleeve 4, which is fitted onto the guide pin 3 to protect the guide pin 3.

[0027] In some embodiments, the number of radial grooves is even, and the even number of radial grooves are symmetrically arranged on the upper surface of the chassis 9.

[0028] It is understood that the existence of an even number of radial grooves corresponds to the existence of a corresponding number of clamping blocks 8. The radial grooves are symmetrically arranged on the upper surface of the chassis 9, and the clamping blocks 8 are also symmetrically arranged. The symmetrical clamping blocks 8 can provide clamping force to the lens 2 from opposite directions, ensuring uniform force on the lens 2 and thus improving the clamping accuracy of the lens 2. Furthermore, the even number of radial grooves are equally spaced on the upper surface of the chassis 9 to further ensure balanced force on the lens 2. In some embodiments, there are four radial grooves, which are symmetrically arranged at equal intervals on the upper surface of the chassis 9.

[0029] In some embodiments, the clamping block 8 is arc-shaped at one end facing the hole, and the clamping block 8 is made of a flexible material.

[0030] The curved clamping block 8 can better hold the lens 2. The flexible material clamping block 8 can maintain the clamping strength while flexibly holding the lens 2, avoiding surface damage to the lens 2 during the clamping process. Specifically, the flexible material can be plastic, and more specifically, it can be polyoxymethylene (POM), Teflon (polytetrafluoroethylene), etc.

[0031] In some embodiments, the handle structure includes: a handle 5, fixedly disposed on the rotating disk 1 for rotating the rotating disk 1, the handle 5 having a plurality of mounting holes arranged sequentially along the radial direction of the rotating disk 1; a support column 7, fixedly disposed on the base 9; and an elastic element 6 disposed on the support column 7, one end of the elastic element 6 facing the handle 5 being able to be hooked and connected with the mounting holes.

[0032] This embodiment describes the specific construction of the handle structure. By fixing a handle 5 to the rotating disk 1, the operator can rotate the rotating disk 1 simply by holding the handle 5, avoiding direct contact with the rotating disk 1, making operation simple and convenient. A support column 7 is fixed to the base 9 to provide support for the elastic element 6. The elastic element 6 is fixed to the support column 7 and can be connected to mounting holes at different distances from the openings on the handle 5 to fix the clamping force. Furthermore, when the elastic element 6 is connected to different mounting holes on the handle 5, the clamping force of the clamping block 8 can be adjusted.

[0033] In some embodiments, the elastic element 6 is a spring, and the end of the spring facing the handle 5 is provided with a hook for connecting with different mounting holes.

[0034] Understandably, this embodiment can be obtained by changing the shape of the metal wire at the end of the spring. The design is simple and easy to implement, and the hook and spring are integrally formed, so it is not easy to break or cause other problems.

[0035] In some embodiments, the size of the plurality of mounting holes increases sequentially in the direction away from the orifice. Understandably, the further away from the orifice the mounting hole is, the greater the force required by the operator to hook the spring into the corresponding hole. Setting the size of the mounting holes further away from the orifice to be larger makes it easier for the operator to hook and connect the spring to the corresponding mounting hole.

[0036] In some embodiments, the end of the handle 5 closer to the rotating disk 1 is smaller than the end farther from the rotating disk 1. This structural design conforms to human grip mechanics and improves the comfort for the operator.

[0037] In some embodiments, the range of the rotatable angle of the handle 5 is greater than the range of the length of the elastic member 6, and when the handle 5 is rotated to the support post 7, the guide pin 3 slides to the side of the guide groove 10 closest to the hole.

[0038] Understandably, the elastic force provided by the elastic element 6 is less than the range of the rotatable angle of the handle 5, and when the handle 5 is rotated to the support column 7, the guide pin 3 slides to the side of the guide groove 10 closest to the hole, so as to provide an adjustable centripetal clamping force for the clamping block 8.

[0039] In some embodiments, the chassis 9 is provided with a guide structure at the hole for guiding the lens 2, so as to enable quick placement and removal of the lens 2.

[0040] The working principle of this centripetal clamping device will be explained below to provide a clearer understanding of its structure: First, rotate handle 5 counterclockwise by a certain angle. Handle 5 drives rotating disk 1 to rotate counterclockwise, and the guide groove 10 of rotating disk 1 rotates counterclockwise relative to guide pin 3. At this time, guide pin 3 slides towards the end of guide groove 10 away from the hole, and then guide pin 3 drives clamping block 8 to move centrifugally, so that clamping block 8 is in a loose state. At this time, place lens 2 in the hole in the middle of base 9 through the guide structure, and align the bottom end of lens 2 with the bearing surface at the bottom of hole in base 9. Then, rotate handle 5 clockwise, and handle 5 drives rotating disk 1 to rotate clockwise. The guide groove 10 of rotating disk 1 rotates clockwise relative to guide pin 3, that is, at this time, guide pin 3 slides towards the end of guide groove 10 near the hole, and then guide pin 3 drives clamping block 8 to move centripetally to clamp lens 2. After determining the clamping force of clamping block 8 on lens 2, hook the hook of spring on support column 7 with the corresponding mounting hole on handle 5 to fix the clamping force on lens 2. Since different mounting holes exert different clamping forces on the clamping block 8, for example, when the spring is connected to a mounting hole that is farther away from the hole, it exerts a greater clamping force on the clamping block 8. In this way, different models of lenses 2 can be clamped.

[0041] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0042] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A centripetal clamping device for a lens, characterized in that, include: The chassis (9) has a hole in the middle for placing the lens (2). The upper surface of the chassis (9) is provided with a plurality of radial grooves. Each radial groove is provided with a clamping block (8) that can slide along the radial groove. The upper part of the clamping block (8) is provided with a guide pin (3). A rotating disk (1) is arranged opposite to the chassis (9) and can rotate relative to the chassis (9). The rotating disk (1) is provided with a plurality of guide grooves (10) that are adapted to the guide pins (3). When the rotating disk (1) rotates, the guide pins (3) slide in the guide grooves (10) and drive the plurality of clamping blocks (8) to move synchronously in a centripetal or centrifugal manner to clamp or release the lens (2). A handle structure is provided for rotating the rotary disk (1) and adjusting the clamping force of the clamping block (8) on the lens (2).

2. The centripetal clamping device according to claim 1, characterized in that, The handle structure includes: The handle (5) is fixedly mounted on the rotating disk (1) and is used to rotate the rotating disk (1). The handle (5) is provided with a plurality of mounting holes arranged in sequence along the radial direction of the rotating disk (1). The support column (7) is fixedly installed on the chassis (9); An elastic element (6) is provided on the support column (7), and one end of the elastic element (6) facing the handle (5) can be hooked and connected to the mounting hole.

3. The centripetal clamping device according to claim 2, characterized in that, The elastic element (6) is a spring, and a hook is provided at one end of the spring facing the handle (5) for connecting with different mounting holes.

4. The centripetal clamping device according to claim 2, characterized in that, The size of the plurality of mounting holes increases sequentially along the direction away from the holes.

5. The centripetal clamping device according to claim 2, characterized in that, The range of the rotatable angle of the handle (5) is greater than the length range of the elastic element (6), and when the handle (5) rotates to the support column (7), the guide pin (3) slides to the side of the guide groove (10) closest to the hole.

6. The centripetal clamping device according to claim 5, characterized in that, The end of the handle (5) closer to the rotating disk (1) is smaller than the end farther away from the rotating disk (1).

7. The centripetal clamping device according to any one of claims 1-6, characterized in that, The number of radial grooves is even, and the even number of radial grooves are symmetrically arranged on the upper surface of the chassis (9).

8. The centripetal clamping device according to any one of claims 1-6, characterized in that, The guide groove (10) is an arc-shaped groove with one end close to the hole and the other end away from the hole.

9. The centripetal clamping device according to any one of claims 1-6, characterized in that, It also includes a guide sleeve (4), which is fitted onto the guide pin (3).

10. The centripetal clamping device according to any one of claims 1-6, characterized in that, The clamping block (8) is arc-shaped at one end facing the hole, and the clamping block (8) is made of a flexible material.

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