CN216356419U

CN216356419U - Voice coil motor and reed structure thereof

Info

Publication number: CN216356419U
Application number: CN202122548072.8U
Authority: CN
Inventors: 胡哲斌; 李育昇; 叶健忠; 程韦翔
Original assignee: SAE Magnetics HK Ltd
Current assignee: SAE Magnetics HK Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-04-19
Anticipated expiration: 2031-10-21

Abstract

The utility model relates to the technical field of camera shooting, in particular to a voice coil motor and a reed structure thereof. In one aspect, the first and second strings are respectively provided with a plurality of first and second bending sections, so that the lengths of the first and second strings are increased, and the stress bearing capacity of the first and second strings is improved; on the other hand, the first string and the second string can always keep parallel to each other, the limited string moving space is utilized to the maximum extent, the effects of maximizing the strings and reducing stress are achieved, the reliability and the durability of the inner ring spring and the outer ring spring can be effectively ensured, and therefore the yield of products is improved, and the production cost is reduced.

Description

Voice coil motor and reed structure thereof

Technical Field

The utility model relates to the technical field of camera shooting, in particular to a voice coil motor and a reed structure thereof.

Background

A Voice coil Motor (also called Voice coil Motor) is a device that converts electrical energy into mechanical energy and realizes linear and limited swing motion. Means for producing regular motion by interaction between the magnetic field from the permanent magnet and the magnetic poles in the magnetic field produced by the conductor of the electrical coil. Since the voice coil motor is a non-commutating type power device. The main components are simple, and the coil, the spring, the magnet, the Hall and IC devices and some fixing mechanisms enable the lens to simultaneously move the components for balancing the electromagnetic force and limiting the moving position of the lens along the axial direction, the radial direction or the axial/radial direction under the electromagnetic action of the coil.

The existing voice coil motor spring is very simple in structure, and although the design concept and the matching lens are different according to different manufacturers, the overall structure is basically consistent. The lens carrier and the voice coil motor are connected with each other in the same plane, the inner ring spring and the outer ring spring are connected with each other, the inner ring spring is used for being connected with the lens carrier, the outer ring is used for being connected to the outside of the motor, the inner ring spring and the outer ring spring are respectively provided with strings, each string is communicated with a control loop, therefore, the lens carrier and the voice coil motor are connected with each other through the connection action of the springs, the effect similar to suspension is realized, as long as slight current generates the effect on the lens carrier through the interaction of an electromagnetic coil arranged on the lens carrier and a permanent magnet arranged on a shell of the voice coil motor, the movement of the lens is finally realized, and the effects of adjusting the focal length and the like are achieved.

However, in a limited string running space, strings of the inner ring spring and the outer ring spring are subjected to sectional string running, and the strings are run in respective regions, the string running space of the two strings is extremely small, so that the total length of the strings is insufficient, great stress is generated, the strings are easy to break, and accordingly, a circuit is broken, the function is lost, products are scrapped, the yield of the products is reduced, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a voice coil motor and a reed structure thereof, which improve the utilization rate of a string running space, thereby being beneficial to increasing the length of a string, reducing the stress borne by the string and improving the use stability of a product.

In order to achieve the above object, the present invention provides a reed structure comprising:

an outer ring spring provided with a first string; and

the inner ring spring is provided with a second string, and the inner ring spring is arranged on the inner side of the outer ring spring;

the first string is provided with a plurality of first bending sections which are sequentially connected along a first string running direction, the second string is provided with a plurality of second bending sections which are sequentially connected along a second string running direction, the first string running direction is parallel to the second string running direction, and the first bending sections are in one-to-one correspondence with the second bending sections and are arranged in parallel.

In some embodiments of the present application, the first bending section is provided with a groove with an opening facing the inner side, the second bending section is provided with a protrusion protruding to the outer side, the protrusion is embedded into the groove and forms a chord running gap between the grooves, and the outer contour of the protrusion is parallel to the inner contour of the groove.

In some embodiments of this application, first section of bending with the second section of bending all includes first connecting portion, second connecting portion and the third connecting portion that connects gradually, first connecting portion and third connecting portion all with the second connecting portion is perpendicular and form arch or recess.

In some embodiments of the present application, the first bending section and the second bending section are both arc-shaped extensions, and two adjacent first bending sections or second bending sections are connected in a smooth transition manner.

In some embodiments of the present application, the first bending section and the second bending section each include a first connecting portion and a second connecting portion, and one end of the first connecting portion is connected with one end of the second connecting portion to form an included angle.

Based on above-mentioned utility model purpose, this application still provides a voice coil motor, including foretell reed structure.

The embodiment of the utility model has the following technical effects:

on one hand, the first string line and the second string line are respectively connected with a plurality of first bending sections and second bending sections, so that the lengths of the first string line and the second string line are increased by bending within a limited linear distance, and the stress bearing capacity of the first string line and the second string line is improved; on the other hand, the first string and the second string can always keep parallel to each other, the limited string moving space is utilized to the maximum extent, the effects of maximizing the strings and reducing stress are achieved, the reliability and the durability of the inner ring spring and the outer ring spring can be effectively ensured, and therefore the yield of products is improved, and the production cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment 1 of the present invention;

FIG. 2 is an enlarged schematic view at A in embodiment 1 shown in FIG. 1;

FIG. 3 is a schematic structural view of a first bending section and a second bending section in the embodiment 1 shown in FIG. 1;

fig. 4 is a schematic structural view of a first bending section and a second bending section in the preferred embodiment 2 of the present invention;

fig. 5 is a schematic structural view of the first bending section and the second bending section in the preferred embodiment 3 of the present invention.

Description of reference numerals:

100. a cup spring 110, a first chord line 111, a first bending section 112 and a groove;

200. an inner coil spring 210, a second chord line 211, a second bend section 212, a bulge;

310. a first connection portion 320, a second connection portion 330, and a third connection portion.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In addition, the terms "first", "second", and the like are employed in the present invention to describe various information, but the information should not be limited to these terms, which are used only to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

Example 1:

referring to fig. 1 to 3, an embodiment of the present invention provides a voice coil motor including a reed structure including an outer coil spring 100 and an inner coil spring 200, described below.

Wherein, the outer ring spring 100 is provided with a first chord line 110, the inner ring spring 200 is provided with a second chord line 210, and the inner ring spring 200 is arranged at the inner side of the outer ring spring 100;

further, the first string line 110 is provided with a plurality of first bending sections 111 sequentially connected along a first string running direction, the second string line 210 is provided with a plurality of second bending sections 211 sequentially connected along a second string running direction, the first string running direction is parallel to the second string running direction, and the plurality of first bending sections 111 and the plurality of second bending sections 211 are in one-to-one correspondence and parallel arrangement.

In this way, in the voice coil motor and reed structure provided by the present embodiment, on one hand, the first string 110 and the second string 210 are respectively connected to the plurality of first bending sections 111 and the plurality of second bending sections 211, so that the lengths of the first string 110 and the second string 210 are increased by bending within a limited linear distance, so as to improve the stress bearing capacity of the first string 110 and the second string 210; on the other hand, the first string 110 and the second string 210 of the present invention can always keep parallel to each other, so as to utilize the limited string running space to the maximum extent, achieve the effects of maximizing the string and reducing the stress, and effectively ensure the reliability and durability of the inner ring spring 200 and the outer ring spring 100, thereby improving the yield of the product and reducing the production cost.

Further, referring to fig. 2 and 3, the first bending section 111 in this embodiment is provided with a groove 112 opening to the inside, the second bending section 211 is provided with a protrusion 212 protruding to the outside, the protrusion 212 is inserted into the groove 112 and forms a running gap with the groove 112, the outer contour of the protrusion 212 is parallel to the inner contour of the groove 112, specifically, the first bending section 111 and the second bending section 211 each include a first connecting portion 310, a second connecting portion 320, and a third connecting portion 330 connected in sequence, the first connecting portion 310 and the third connecting portion 330 are perpendicular to the second connecting portion 320 and form the protrusion 212 or the groove 112, so that the lengths of the first string 110 and the second string 210 can be increased in a limited linear distance by providing the protrusion 212 and the groove 112, and in addition, when the inner coil spring 200 is assembled with the outer coil spring 100, by fitting the protrusion 212 and the groove 112 of the first string 110 and the second string 210 with each other, when the first string wire 110 and the second string wire 210 are moved in the chord zone, the moving spaces of the first string wire 110 and the second string wire 210 are partially overlapped, the utilization rate of the moving spaces is improved, and when the protrusion 212 is embedded in the groove 112, the outer contour of the protrusion 212 is parallel to the inner contour of the groove 112, and a moving gap is formed between the protrusion 212 and the groove 112, so that the influence of the contact between the inner ring spring 200 and the outer ring spring 100 on the stability of the operation of the control circuit is avoided.

Example 2:

referring to fig. 4, the present embodiment is different from the above-mentioned embodiment 1 in that the first bending section 111 and the second bending section 211 each include a first connecting portion 310 and a second connecting portion 320, and one end of the first connecting portion 310 is connected to one end of the second connecting portion 320 at an included angle, specifically, the included angle β formed by connecting the first connecting portion 310 to the second connecting portion 320 in the present embodiment is 30 ° to 90 °, and preferably, β may be 30 °, 45 °, 60 °, or 90 °.

Example 3:

referring to fig. 5, the present embodiment is different from embodiment 1 in that the first bending section 111 and the second bending section 211 extend in an arc shape, and two adjacent first bending sections 111 or second bending sections 211 are connected in a smooth transition manner, which can help to reduce stress concentration generated by the first string 110 and the second string 210 when a force is applied, and the first bending section 111 and the second bending section 211 extending in an arc shape can effectively increase the length of the first string 110 and the second string 210, reduce stress, and avoid string breakage.

In summary, according to the voice coil motor and the reed structure thereof provided by the utility model, in a limited winding space, the lengths of the first string 110 and the second string 210 can be increased by the first string 110 provided with the plurality of first bending sections 111 and the second string 210 provided with the plurality of second bending sections 211, and the stress on the first string 110 and the second string 210 is reduced, so that the reed has high reliability and durability; in addition, the first chord running direction is parallel to the second chord running direction, and the plurality of first bending sections 111 and the plurality of second bending sections 211 are arranged in a one-to-one correspondence and parallel manner, so that the first chord line 110 and the second chord line 210 are prevented from deforming and contacting with each other in the working process, and the reliability and the stability of the reed in the working process are ensured.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A reed structure, comprising:

an outer ring spring provided with a first string; and

2. A reed structure as in claim 1, wherein the first folded section has a groove opening to the inside, the second folded section has a protrusion protruding to the outside, the protrusion fits into the groove and forms a gap with the groove, and the outer contour of the protrusion is parallel to the inner contour of the groove.

3. A reed structure as in claim 2, wherein the first and second folded sections each comprise first, second and third connecting portions connected in series, the first and third connecting portions each being perpendicular to the second connecting portion and forming the protrusion or recess.

4. A reed structure as in claim 2, wherein the first and second bent segments each extend in an arc shape, and two adjacent first or second bent segments are connected in smooth transition.

5. A reed structure as in claim 2, wherein the first and second folded sections each comprise a first connection portion and a second connection portion, one end of the first connection portion being connected at an angle to one end of the second connection portion.

6. A voice coil motor comprising a reed structure according to any one of claims 1 to 5.