CN216646937U

CN216646937U - Torsion control device of optical lens structure

Info

Publication number: CN216646937U
Application number: CN202220281982.6U
Authority: CN
Inventors: 房凯旋
Original assignee: Cbc Optronics Beijing Co ltd
Current assignee: Cbc Optronics Beijing Co ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-05-31
Anticipated expiration: 2032-02-11

Abstract

The utility model provides a torsion control device of an optical lens structure, which comprises a central shaft and a pressing ring jig. The screwing and torsion regulating mechanism comprises a shell, a central shaft, a connecting piece, a torsion adjusting ring, a spring and a ball. The lower extreme of manual regulation torsion adjustable ring increases spring force, spring force converts the pressure of last connecting piece to the ball into, increases the frictional force between ball and last connecting piece and the shell inner wall, reaches the purpose of adjusting torsion, when the torsion of adjusting is less than the screwing force of tool, the ball can be because the frictional force that receives is less than torsion and be circumferential direction in the arc recess, the shell can carry out idle motion and sound this moment, reminds the operator screw thread clamping ring to have installed correctly. The amount of adjustment can be controlled according to the torque required.

Description

Torsion control device of optical lens structure

Technical Field

The utility model relates to the technical field of mobile charging, in particular to a torsion control device of an optical lens structure.

Background

With the continuous development of optical lens technology and the continuous improvement of lens precision requirements, the requirements for the lens pressing ring assembling torsion are higher and higher. In the existing lens manufacturing process, a lens pressing ring is mainly used for keeping lenses fixed in a lens barrel in a group optical system, so that the interval of each lens in the group system is kept to be a certain part. The tightness of the pressing ring when assembled is different due to different personnel, so that the lens is easy to deform due to the pressure of the pressing ring, and the surface precision of the lens is influenced. Thereby affecting the overall resolution of the lens. And even cause physical damage to the parts.

For example, fig. 3 shows a normal lens interference image. Fig. 4 shows an interference image when the lens is deformed. It can be seen that the interference fringes in fig. 3, which should be parallel, appear to be significantly distorted and deformed.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a torsion control device of an optical lens structure, which solves the technical problem of lens deformation or structure loosening caused by improper screwing torsion control in the prior art and aims to realize torsion control during fastening and dismounting of a threaded pressing ring.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A torsion control device of an optical lens structure comprises a shell, a connecting piece, a central shaft, a torsion adjusting ring and a spring;

the shell is a cylinder-shaped structure with a cavity and one side closing the other side opening; the connecting piece is positioned at the closed side part in the shell; one side of the central shaft extends into the shell and is fixedly connected with the connecting piece, and the other side of the central shaft is used for installing a jig for screwing the lens pressing ring; the radial side surface of the connecting piece is contacted with the inner surface of the closed side part of the shell; the torsion adjusting ring and the spring are respectively sleeved on the outer surface of the central shaft, two ends of the spring are respectively contacted with the connecting piece and the torsion adjusting ring, and the spring is compressed by the connecting piece and the torsion adjusting ring; the side part of the shell with the opening is provided with an internal thread, and the torque adjusting ring is provided with an external thread matched with the internal thread; the inner surface of the closed side of the housing and/or the radial side of the connector has a circumferentially extending groove with one or more balls therein;

when the torsion adjusting ring and the shell rotate relatively, the compression amount of the spring can be increased, so that the friction force between the spring and the connecting piece is greater than the friction force between the connecting piece and the shell, and the connecting piece and the shell are driven to rotate relatively; when the connecting piece and the shell rotate relatively, the balls can be driven to roll.

Preferably, the torsion adjusting ring is of a cylindrical structure; a side portion of the torque adjustment ring extending into the housing has a first projecting portion, and a first projecting portion side end surface of the first projecting portion contacts the spring; the other side portion of the torsion adjusting ring has a second protrusion.

Preferably, the outer circumferential surface of the second rib has a plurality of first parallel knurls extending in the axial direction of the second rib.

Preferably, the outer peripheral surface of the housing has second parallel knurls extending in the axial direction of the housing.

Preferably, the connecting piece is fixedly connected with the central shaft through coating anaerobic adhesive water.

Preferably, the end part of one side of the central shaft is provided with a C-shaped interface used for installing a jig for screwing the lens pressing ring.

It can be seen from the above technical solutions provided by the embodiments of the present invention that the torsion control device for an optical lens structure provided by the present invention includes a central shaft and a pressing ring fixture. The screwing and torsion regulating mechanism comprises a shell, a central shaft, a connecting piece, a torsion adjusting ring, a spring and a ball. The lower extreme of manual regulation torsion adjustable ring increases spring force, spring force converts the pressure of last connecting piece to the ball into, increases the frictional force between ball and last connecting piece and the shell inner wall, reaches the purpose of adjusting torsion, when the torsion of adjusting is less than the screwing force of tool, the ball can be because the frictional force that receives is less than torsion and be circumferential direction in the arc recess, the shell can carry out idle motion and sound this moment, reminds the operator screw thread clamping ring to have installed correctly. The amount of adjustment can be controlled according to the torque required.

Additional aspects and advantages of the utility model 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 the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a torque control device of an optical lens structure according to the present invention;

fig. 2 is a schematic diagram illustrating a use state of a torque control device of an optical lens structure according to the present invention;

FIG. 3 is a schematic diagram of an interference image of a lens at normal time;

fig. 4 is a schematic diagram of an interference image when the lens is deformed.

In the figure:

1. the lens comprises a shell 2, a central shaft 3, a connecting piece 4, a torsion adjusting ring 5, a spring 6, a ball 7, a jig 8 and a lens.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.

Referring to fig. 1, the present invention provides a torsion control device for an optical lens structure, including a housing 1, a connecting member 3, a central shaft 2, a torsion adjusting ring 4 and a spring 5.

The housing 1 has a cylindrical structure with an axially extending cavity, one side of which is closed and the other side of which communicates the cavity with the outside. The connecting piece 3 is located on the closed side in the cavity of the housing 1. One side of the central shaft 2 extends into the cavity of the shell 1, and is mutually connected with the connecting piece 3 along the axial direction of the shell 1 through the side end surface, so that the end-to-end connection state is formed. The other side of the central shaft 2 is positioned outside the shell 1 and is used for installing a jig for screwing the lens pressing ring. The torsion adjusting ring 4 and the spring 5 are respectively sleeved on the outer surface of the central shaft 2, wherein the spring 5 is positioned in the cavity of the shell 1, one axial side of the torsion adjusting ring extends into the shell 1, and the other axial side of the torsion adjusting ring is positioned outside the shell 1. The two ends of the spring 5 are respectively pressed against the connecting piece 3 and the torsion adjusting ring 4. One end of the spring 5 may preferably be connected to the torsion adjusting ring 4.

In the embodiment provided by the utility model, the shell 1 is provided with an internal thread on the inner surface of the side part with the opening, the outer peripheral surface of one side of the torsion adjusting ring 4 is provided with an external thread matched with the internal thread, and the torsion adjusting ring 4 can extend into the shell 1 along the axial direction of the shell 1 through the thread matching in a rotating way, and together with the connecting piece 3, the spring 5 is extruded or reversely and automatically rotated to move out of the shell 1 to loosen the spring 5. The inner surface of the housing 1 on the closed side and/or the outer surface of the connector 3 has a plurality of circumferentially extending, equally spaced grooves (which are offset from one another to form respective spaced equal divisions when grooves are provided in both the housing 1 and the connector 3), each of which has one or more balls 6 therein.

The torsion control device is installed in the following mode: firstly, a torsion adjusting ring 4 and a spring 5 are sequentially sleeved on a central shaft 2, then the central shaft 2 is stretched into a shell 1, a connecting piece 3 and the central shaft 2 are fixed by anaerobic adhesive, balls 6 are placed in an equant arc-shaped groove of the connecting piece 3 and/or the shell 1 in advance, and the upper part of the torsion adjusting ring 4 is assembled with the shell by means of thread matching of the upper part of the torsion adjusting ring and the shell.

The working principle of the torsion control device is as follows: a small interference magnitude exists between the connecting piece 3 and the shell 1, so that the shell 1 can drive the connecting piece 3 and the central shaft 2 to rotate through friction force; when the lens pressing ring is installed, the shell 1 is screwed, and the jig is driven by the connecting piece 3 and the central shaft 2; at this time, the torsion adjusting ring 4 also rotates together; when the lens pressing ring is installed in place, the central shaft 2 and the connecting piece 3 cannot rotate continuously, at the moment, the shell 1 is screwed again, so that the shell 1 and the torsion adjusting ring 4 rotate relatively, the spring 4 is further compressed, the pressure between the spring 4 and the connecting piece 3 is increased and converted into friction force, when the friction force is larger than the friction force between the shell 1 and the connecting piece 3, the shell 1 rotates relatively with the connecting piece 3, namely, the shell 1 idles, the ball 6 is driven to roll, and corresponding sound is emitted to remind a user.

The relative position of the torsion adjusting ring 4 and the shell 1 and the precompression amount of the spring 4 are adjusted in advance when the torsion adjusting ring is installed, for example, the lens sample is tested to obtain the maximum torsion of the clamping ring in position, the maximum torsion is converted to the installation position of the torsion adjusting ring 4, and corresponding scales are arranged on the side surface of the torsion adjusting ring 4, so that the torsion adjusting ring is convenient to return for reuse.

The C-interface lens or the C-interface jig used by the product is arranged on the torsion control device, the lower end of the connecting piece 3 is manually adjusted, and the required torsion is adjusted. The jig is matched with the thread pressing ring, and the shell 1 is screwed to be installed. When the sound of the ball 6 moving between the arc-shaped grooves, i.e. the housing 1 running idle, is heard, it indicates that the current torque has met the desired torque, i.e. the threaded clamping ring has been mounted in place.

In the preferred embodiment of the present invention, the torsion adjusting ring 4 is a cylindrical structure passing through axially. The side portion of the torsion adjustment ring 4 extending into the housing 1 has a first projecting rib, and the first projecting rib side end surface abuts against the spring 5. The torsion adjusting ring 4 has a second protrusion at the other side thereof, so that it is convenient to manually screw the torsion adjusting ring 4. In order to increase the frictional force, the outer circumferential surface of the second rib has a plurality of first parallel knurls extending in the axial direction of the second rib, and the outer circumferential surface of the housing 1 has a plurality of second parallel knurls extending in the axial direction of the housing 1. The torsion adjusting ring 4 and the central shaft 2 can be directly sleeved, and can also be provided with mutually matched thread structures.

In the preferred embodiment of the present invention, as shown in fig. 2, the end portion of one side of the central shaft is a C-shaped interface (the cross section is C-shaped), such as a permanent threaded hole of 1-32un f under ISO metric standard, which has good versatility. The jig is of a fork-shaped structure, and the double-plug pin structure at the end part is used for being inserted into a milling groove reserved in a lens pressing ring of the lens 8.

In this embodiment, one end of the connecting member 3 has a blind hole, the end of the central shaft has a plug inserted into the blind hole, the plug and the blind hole can be connected by mutually matched threads, and the fixing mode can be coating anaerobic glue or a pin, or can adopt reverse threads (that is, the screwing direction of the central shaft 2 of the connecting member 3 which is mutually loosened is opposite to the screwing direction of the housing 1).

In summary, the torsion control device of an optical lens structure provided by the present invention includes a central shaft and a pressing ring fixture. The screwing and torsion regulating mechanism comprises a shell, a central shaft, a connecting piece, a torsion adjusting ring, a spring and a ball. The lower extreme of manual regulation torsion adjustable ring increases spring force, spring force converts the pressure of last connecting piece to the ball into, increases the frictional force between ball and last connecting piece and the shell inner wall, reaches the purpose of adjusting torsion, when the torsion of adjusting is less than the screwing force of tool, the ball can be because the frictional force that receives is less than torsion and be circumferential direction in the arc recess, the shell can carry out idle motion and sound this moment, reminds the operator screw thread clamping ring to have installed correctly. The amount of adjustment can be controlled according to the torque required.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, apparatus or system embodiments, which are substantially similar to method embodiments, are described in relative ease, and reference may be made to some descriptions of method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A torsion control device of an optical lens structure is characterized by comprising a shell, a connecting piece, a central shaft, a torsion adjusting ring and a spring;

the shell is of a cylindrical structure with a cavity and one side of the shell is closed by the other side opening; the connecting piece is positioned on the closed side part in the shell; one side of the central shaft extends into the shell and is fixedly connected with the connecting piece, and the other side of the central shaft is used for installing a jig for screwing the lens pressing ring; the radial side surface of the connecting piece is in contact with the inner surface of the closed side part of the shell; the torsion adjusting ring and the spring are respectively sleeved on the outer surface of the central shaft, two ends of the spring are respectively contacted with the connecting piece and the torsion adjusting ring, and the spring is compressed by the connecting piece and the torsion adjusting ring; the side part of the shell with the opening is provided with an internal thread, and the torque adjusting ring is provided with an external thread matched with the internal thread; the inner surface of the closed side of the housing and/or the radial side of the connector has a circumferentially extending groove with one or more balls therein;

when the torsion adjusting ring and the shell rotate relatively, the compression amount of the spring can be increased, so that the friction force between the spring and the connecting piece is larger than the friction force between the connecting piece and the shell, and the connecting piece and the shell are driven to rotate relatively; when the connecting piece and the shell rotate relatively, the ball can be driven to roll.

2. The torque control device according to claim 1, wherein the torque adjustment ring is a cylindrical structure; a side portion of the torsion adjustment ring extending into the housing has a first projecting portion, and a first corrugated side end surface of the torsion adjustment ring is in contact with the spring; the other side portion of the torsion adjusting ring has a second protrusion.

3. The torsion control apparatus according to claim 2, wherein the outer peripheral surface of the second corrugated portion has a plurality of first parallel knurls extending in the axial direction of the second corrugated portion.

4. The torque control device according to claim 1, wherein the outer peripheral surface of the housing has second parallel knurls extending in the axial direction of the housing.

5. The torque control device according to claim 1, wherein the connection member is fixedly connected to the central shaft by coating anaerobic adhesive water.

6. The torque control device according to claim 1, wherein the end portion of the central shaft on one side has a C-shaped interface for mounting a jig for screwing a lens pressing ring.