CN112928889A

CN112928889A - Driving device, camera module and electronic equipment

Info

Publication number: CN112928889A
Application number: CN202110299842.1A
Authority: CN
Inventors: 靖二勇; 易长飞
Original assignee: New Shicoh Technology Co Ltd
Current assignee: New Shicoh Technology Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-06-08
Anticipated expiration: 2041-03-22
Also published as: CN112928889B

Abstract

The invention discloses a driving device, a camera module and an electronic device, wherein the driving device comprises: the winding device comprises a carrier, a winding device and a control device, wherein the carrier comprises a carrier body and a winding bulge, and the winding bulge is arranged on at least one surface of the carrier body; the coil is wound on the winding bulge; and the first depressed part is arranged on the carrier body, the first depressed part corresponds to the position of the winding protrusion, and glue can be filled in the first depressed part to ensure that the carrier body is connected with the coil. The invention has large operation space and simple and convenient dispensing operation, and the glue in the first concave part can be solidified to form a glue column, thereby further improving the connection strength of the carrier body and the coil.

Description

Driving device, camera module and electronic equipment

Technical Field

The invention relates to the technical field of micro motors, in particular to a driving device, a camera module and electronic equipment.

Background

The camera is often arranged in the existing electronic equipment such as a camera, a smart phone and a smart watch, and mainly comprises a driving device and a lens, wherein the driving device is in driving connection with the lens to drive the lens to realize automatic focusing. The related driving device mainly comprises a shell, a base, a carrier, an upper elastic sheet, a lower elastic sheet, a magnet, a coil and other structures, wherein when the coil is electrified, the carrier can move along the optical axis direction of the lens to drive the lens to realize automatic focusing.

In the prior art, the carrier and the coil are generally connected and fixed through glue, but the carrier and the coil are inconvenient to glue, so that the connection firmness is poor.

Disclosure of Invention

Therefore, it is necessary to provide a driving device, a camera module and an electronic device with simple structure, convenient dispensing operation and firm connection for solving the above technical problems.

A drive device, comprising:

the winding device comprises a carrier, a winding device and a control device, wherein the carrier comprises a carrier body and a winding bulge, and the winding bulge is arranged on at least one surface of the carrier body;

the coil is wound on the winding bulge; and

the first depressed part, first depressed part is seted up on the carrier body, just first depressed part with the bellied position of wire winding is corresponding, can fill glue in the first depressed part, make the carrier body with the coil is connected.

In one embodiment, the first recess includes a first bottom wall and a first side wall, the first bottom wall is located above the winding protrusion, and the first side wall is connected to the first bottom wall.

In one embodiment, the first side wall is a vertical plane or a slope.

In one embodiment, the number of the first recesses is multiple, and the first recesses are distributed at intervals along the length direction of each winding protrusion.

In one embodiment, the carrier further comprises an elastic sheet, the elastic sheet comprises an inner ring connecting portion, a second recessed portion is arranged on the carrier body, and glue can be filled in the second recessed portion to connect the inner ring connecting portion and the carrier body.

In one embodiment, the first recess and the second recess communicate with each other.

In one embodiment, the inner ring connecting portion is provided with a through hole, and the through hole is communicated with the second concave portion.

In one embodiment, the second recess includes a second bottom wall, a third side wall, a fourth side wall, a fifth side wall and a first opening, the third side wall, the fourth side wall and the fifth side wall are connected in sequence, an included angle between the third side wall and the fourth side wall is an obtuse angle, and the first opening corresponds to the first recess.

In one embodiment, the second bottom wall is a plane or a slope.

In one embodiment, a riveting column is arranged on the carrier body, the inner ring connecting portion is sleeved on the riveting column, and the inner ring connecting portion is riveted and fixed with the carrier body through the riveting column.

In one embodiment, the fifth side wall is shaped like an inwardly protruding arc, and the fifth side wall is close to the rivet column.

A camera module comprises the driving device.

An electronic device comprises the camera module.

Above-mentioned drive arrangement, module and electronic equipment make a video recording, when using, only need through some adhesive device with glue point go into first depressed part, glue flows to the clearance department of carrier body and coil along first depressed part, can bond carrier body and coil fixedly, its operating space is big, and some adhesive operation is simple and convenient to it can also solidify the formation and glue the post to, glue in the first depressed part to further improve the joint strength of carrier body and coil.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described 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 that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the construction of the driving apparatus of the present invention;

FIG. 2 is a schematic view of the structure of the carrier of the drive of the present invention;

fig. 3 is a schematic view of a connection structure of a coil and a carrier of the driving device of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic view of a connection structure between a coil and a spring plate of the driving device of the present invention;

FIG. 6 is a schematic structural diagram of a camera module according to the present invention;

fig. 7 is a schematic structural diagram of the electronic device of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all 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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The first embodiment is as follows:

referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a driving device according to the present invention; FIG. 2 is a schematic view of the structure of the carrier of the drive of the present invention; fig. 3 is a schematic view of a connection structure of the coil and the carrier of the driving device of the present invention. An embodiment of the present invention provides a driving device 10, which includes a carrier 101, a coil 102, and a first recess 103. The carrier 101 comprises a carrier body 1011 and a routing protrusion 1012, wherein the routing protrusion 1012 is arranged on at least one surface of the carrier body 1011; the coil 102 is wound on the winding protrusion 1012; the first concave part 103 is arranged on the carrier body 1011, the position of the first concave part 103 corresponds to that of the winding protrusion 1012, and glue can be filled in the first concave part 103, so that the carrier body 1011 is connected with the coil 102.

Specifically, the driving device 10 may further include a housing 104, a base body 105, a magnet, a spring plate 106, and the like. The housing 104 is covered on the base body 105, and encloses with the base body 105 to form an installation cavity, the magnet is installed in the installation cavity and located at the periphery of the carrier 101, the coil 102 is electrically connected with an external power supply, when in actual use, a structure (such as a lens component) to be driven is connected with the carrier 101, at this time, the coil 102 is electrified, and the carrier 101 can move in the installation cavity, so that the lens component and other structures can be driven to move.

Further, the winding protrusion 1012 may be disposed at a middle portion of an outer sidewall of the carrier body 1011, so that when the coil 102 is wound on the winding protrusion 1012, it may make an arrangement of the coil 102 and the carrier body 1011 more compact, facilitating miniaturization of the driving apparatus 10. In some embodiments, the routing protrusion 1012 may also be disposed on the upper or lower portion of the outer sidewall of the carrier body 1011.

Further, the winding protrusion 1012 may be disposed on a side wall of one side of the carrier body 1011, or the winding protrusion 1012 may be disposed on two opposite side walls of the carrier body 1011, so that when the coil 102 is energized, two sides of the carrier body 1011 are simultaneously stressed, so as to make the carrier body 1011 in a stress balanced state, thereby improving stability of the carrier body 1011 during movement. In other embodiments, the routing protrusion 1012 may also be disposed on a four-sided side wall on the carrier body 1011.

When the driving device 10 is used, glue is only needed to be dispensed into the first concave part 103 through the glue dispensing equipment, the glue flows to the gap between the carrier body 1011 and the coil 102 along the first concave part 103, the carrier body 1011 and the coil 102 can be bonded and fixed, the operation space is large, the glue dispensing operation is simple and convenient, and the glue in the first concave part 103 can be solidified to form a glue column, so that the connection strength of the carrier body 1011 and the coil 102 is further improved.

In an embodiment of the present invention, the first recess 103 includes a first bottom wall 1031 and a first side wall 1032, the first bottom wall 1031 is located above the winding protrusion 1012, and the first side wall 1032 is connected to the first bottom wall 1031. That is, when glue is added into the first recess 103, the glue flows along the first sidewall 1032 to the first bottom wall 1031, and then flows into the gap between the carrier body 1011 and the coil 102 from the first bottom wall 1031, so that not only the contact area between the carrier body 1011 and the coil 102 is increased and the connection strength is improved, but also the glue can uniformly flow into the gap between the carrier body 1011 and the coil 102, and the adhesive is prevented from being insecure due to uneven distribution of the glue.

Alternatively, the first side wall 1032 may be a vertical plane, so that the glue in the first recess 103 has a short residence time on the first side wall 1032, which accelerates the flow onto the first bottom wall 1031 and into the gap between the carrier body 1011 and the coil 102, thereby improving the bonding efficiency between the carrier body 1011 and the coil 102. In other embodiments of the present invention, the first side wall 1032 may be a slope, and the slope may be a forward slope extending from the first bottom wall 1031 to a direction away from the winding protrusion 1012, or the slope may be a reverse slope extending from the first bottom wall 1031 to a direction close to the winding protrusion 1012. When the inclined plane is a forward inclined plane, a larger opening can be formed at the top of the first concave part 103, so that the dispensing operation of the dispensing equipment is facilitated. When the inclined plane is a reverse inclined plane, a larger opening can be formed at the bottom of the first concave part 103, so that the overflow and leakage of the glue from the top of the first concave part 103 can be reduced on the premise of ensuring the connection strength.

Optionally, in order to further increase the contact area between the carrier body 1011 and the coil 102 and improve the connection strength, the number of the first recesses 103 is plural and is distributed at intervals along the length direction of each winding protrusion 1012.

Referring to fig. 5, fig. 5 is a schematic view of a connection structure between a coil and a spring plate of the driving device of the present invention. In an embodiment of the invention, the resilient tab 106 includes an inner ring connecting portion 1061, a second recess 1013 is disposed on the carrier body 1011, and the second recess 1013 can be filled with glue, so that the inner ring connecting portion 1061 is connected to the carrier body 1011.

It should be noted that the inner ring connecting portion 1061 is an inner ring tail portion of the elastic sheet 106, and the second recess 1013 corresponds to the inner ring tail portion of the elastic sheet 106, so that the inner ring connecting portion 1061 and the carrier body 1011 can be adhered to each other by glue, which can avoid the defects of the inner ring connecting portion 1061, such as warping and loose connection. In other embodiments of the present invention, the second recess 1013 may be disposed at other positions of the carrier body 1011.

In the present embodiment, the first and

second recesses

103 and 1013 communicate with each other; with such an arrangement, after glue is added into the second recess 1013, the glue can bond the inner ring connecting part 1061 and the carrier body 1011, and the redundant glue can flow into the first recess 103 along the first side wall 1032, so that not only can the influence of the redundant glue on other parts on the carrier body 1011 be avoided, but also the waste of the redundant glue can be avoided.

Optionally, a through hole 1062 is formed in the inner ring connecting portion 1061, and the through hole 1062 is partially communicated with the second recess 1013. Specifically, the through hole 1062 may have various shapes such as a circle, a square, etc., and the through hole 1062 may be partially located outside the second recess 1013, and the rest of the through hole 1062 is communicated with the second recess 1013, so that after the glue flows in from the through hole 1062, a part of the glue stays outside the second recess 1013, and another part of the glue flows into the second recess 1013 along the sidewall thereof, which can avoid the defect that the inner ring connecting portion 1061 and the second recess 1013 are hollow or do not contact due to insufficient glue amount.

Referring to fig. 4, fig. 4 is a partial enlarged view of fig. 3 at a. In an embodiment of the present invention, the second recess 1013 includes a second bottom wall 10131, a third side wall 10132, a fourth side wall 10133, a fifth side wall 10134 and a first opening 10135, the third side wall 10132, the fourth side wall 10133 and the fifth side wall 10134 are connected in sequence, an included angle between the third side wall 10132 and the fourth side wall 10133 is an obtuse angle, and the first opening 10135 corresponds to the first recess 103. With this arrangement, the recessed area of the second recess 1013 can be enlarged in a limited space, thereby increasing the contact area between the inner ring connecting part 1061 and the carrier body 1011. Excess glue in the second recess 1013 may flow into the first recess 103 through the first opening 10135.

Optionally, the second bottom wall 10131 may be a plane, or the second bottom wall 10131 may also be a slope, so that the excess glue in the second recess 1013 flows into the first recess 103.

In one embodiment, in order to increase the connection strength between the spring 106 and the carrier body 1011, a riveting column 1014 is disposed on the carrier body 1011, the inner ring connection 1061 is sleeved on the riveting column 1014, and the inner ring connection 1061 is riveted and fixed to the carrier body 1011 through the riveting column 1014.

Optionally, the fifth side wall 10134 is shaped like an arc protruding inwards, and the fifth side wall 10134 is close to the rivet column 1014. Thus, the structural strength of the carrier body 1011 at the position of the riveting column 1014 can be increased, and the second recess 1013 is prevented from being damaged when the riveting column 1014 is riveted.

Example two:

referring to fig. 6, fig. 6 is a schematic structural diagram of a camera module according to the present invention. An embodiment of the invention provides a camera module 20, which includes the driving device 10. Specifically, the camera module 20 includes a driving device 10 and a lens assembly 30, the driving device 10 is connected to the lens assembly 30, and when the driving device 10 is connected to the lens assembly 30, the lens assembly 30 is connected to a carrier 101 of the driving device 10, and when a coil 102 of the driving device 10 is energized, the carrier 101 can move along an optical axis direction of the lens assembly 30, so that the lens assembly 30 can be driven to achieve auto-focusing.

Example three:

referring to fig. 7, fig. 7 is a schematic structural diagram of an electronic device according to the present invention. An embodiment of the invention provides an electronic device, which includes the camera module 20. Specifically, the electronic device 40 may be a mobile phone, a tablet computer, a telephone watch, a security camera, an in-vehicle camera, and the like, and includes a camera module 20 and a housing 401, where the camera module 20 is disposed on the housing 401.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A drive device, comprising:

the coil is wound on the winding bulge; and

2. The drive of claim 1, wherein the first recess includes a first bottom wall and a first side wall, the first bottom wall being located above the winding protrusion, the first side wall being connected to the first bottom wall.

3. The drive of claim 2, wherein the first sidewall is a vertical plane or a bevel.

4. The driving apparatus as claimed in claim 2 or 3, wherein said first recesses are plural in number and spaced apart along a length direction of each of said winding protrusions.

5. The drive device of claim 1, further comprising a spring, wherein the spring comprises an inner ring connecting portion, the carrier body is provided with a second recess, and the second recess can be filled with glue to connect the inner ring connecting portion and the carrier body.

6. The drive of claim 5, wherein the first recess and the second recess communicate with each other.

7. The drive of claim 5, wherein the inner race connecting portion is provided with a through hole communicating with the second recessed portion.

8. The driving apparatus as claimed in any one of claims 5 to 7, wherein the second recess comprises a second bottom wall, a third side wall, a fourth side wall, a fifth side wall and a first opening, the third side wall, the fourth side wall and the fifth side wall are connected in sequence, an included angle between the third side wall and the fourth side wall is an obtuse angle, and the first opening corresponds to the first recess.

9. The drive of claim 8, wherein the second bottom wall is planar or beveled.

10. The drive device as claimed in claim 9, characterized in that a rivet column is provided on the carrier body, the inner ring connecting portion is fitted over the rivet column, and the inner ring connecting portion is riveted to the carrier body by the rivet column.

11. The drive of claim 10, wherein the fifth side wall is shaped as an inwardly projecting circular arc, and wherein the fifth side wall is adjacent the rivet post.

12. A camera module, characterized in that it comprises a drive device according to any one of claims 1 to 11.

13. An electronic apparatus characterized by comprising the camera module according to claim 12.