阅读说明：本技术 透镜马达簧片、透镜马达及摄像装置 (lens motor reed, lens motor, and image pickup apparatus ) 是由 王建华 张晓良 于 2019-09-30 设计创作，主要内容包括：本发明提供了一种透镜马达簧片、透镜马达及摄像装置。其中,透镜马达簧片,包括：本体部,本体部具有中心孔以避让透镜,本体部与透镜马达的AF马达组件连接；挠曲臂,挠曲臂由本体部的周向边缘伸出并沿本体部的周向延伸,挠曲臂的延伸端与透镜马达的OIS底座连接,且挠曲臂与本体部不共面。本发明解决了现有技术中OIS簧片使用性能差的问题。(The invention provides a lens motor reed, a lens motor and an image pickup apparatus. Wherein, lens motor reed includes: a body part having a central hole to avoid the lens, the body part being connected with an AF motor component of the lens motor; and the deflection arm extends out of the peripheral edge of the body part and extends along the peripheral direction of the body part, the extending end of the deflection arm is connected with the OIS base of the lens motor, and the deflection arm is not coplanar with the body part. The invention solves the problem of poor use performance of the OIS reed in the prior art.)

1. A lens motor reed, comprising:

A body portion (10), the body portion (10) having a central aperture (11) to avoid a lens, the body portion (10) being connected to an AF motor assembly (40) of a lens motor;

A flexure arm (20), the flexure arm (20) protruding from a circumferential edge of the body portion (10) and extending along a circumferential direction of the body portion (10), an extending end of the flexure arm (20) being connected to an OIS base (200) of the lens motor, and the flexure arm (20) being non-coplanar with the body portion (10).

2. The lens motor reed according to claim 1, wherein at least one moment arm extension (21) is formed bent along the flexure arm (20) in a direction in which it extends, the moment arm extension (21) protruding away from the center hole (11).

3. The lens motor reed of claim 2, wherein the distance between the moment arm extension (21) and the OIS mount (200) in its direction of extension increases gradually.

4. The lens motor reed as in claim 2, wherein the circumferential edge of the body portion (10) comprises four straight sections (12) and a corner section (13) connecting two adjacent straight sections (12), and the moment arm extension (21) is located at the corner section (13).

5. the lens motor reed according to claim 1, wherein the circumferential edge of the body portion (10) includes four straight sections (12) and a corner section (13) connecting two adjacent straight sections (12), the flexure arm (20) includes a first section (22), a transition section (23), and a second section (24) connected in sequence, the first section (22) is close to the body portion (10) relative to the second section (24), and the first section (22) and the second section (24) respectively correspond to a set of two adjacent straight sections (12), and the cross-sectional area of the second section (24) is larger than that of the first section (22).

6. The lens motor reed of claim 5,

the cross-sectional area of the first section (22) decreases in a direction approaching the transition section (23); and/or

The cross-sectional area of the second section (24) decreases in a direction close to the transition section (23).

7. The lens motor reed as in claim 2, wherein the arm extension (21) has a U-shaped structure comprising a first bending section (211), a second bending section (212) and a third bending section (213) connected in sequence, and a distance L between a surface of the first bending section (211) on a side close to the third bending section (213) and a surface of the first bending section (211) on a side far from the third bending section (213) is greater than or equal to 0.10mm and less than or equal to 0.15 mm.

8. The lens motor reed as in claim 2, wherein the cross-sectional area is equal everywhere on the moment arm extension (21).

9. The lens motor reed as in claim 7, wherein the body portion (10) has a projection (14) projecting toward the second bend section (212).

10. The lens motor reed as in claim 1, wherein an angle between the flexure arm (20) and a plane in which the body portion (10) is located is 3 degrees or more and 4 degrees or less.

11. A lens motor comprising an OIS chassis (200), a shield cover (30), an AF motor assembly (40) and a lens motor reed, said shield cover (30) and said OIS chassis (200) forming a receiving space therebetween, said AF motor assembly (40) and said lens motor reed being located in said receiving space, said lens motor reed being disposed between said OIS chassis (200) and said AF motor assembly (40), wherein said lens motor reed is a lens motor reed according to any one of claims 1 to 10.

12. The lens motor of claim 11, wherein the OIS mount (200) has a blade assembly with a relief space that mates with a moment arm extension (21) of a flexure arm (20) of the lens motor reed.

13. An image pickup apparatus comprising the lens motor according to claim 11 or 12.

Technical Field

the invention relates to the field of an image pickup device, in particular to a lens motor reed, a lens motor and an image pickup device.

Background

At present, sometimes, photos shot in the process of shooting by a mobile phone are blurred, namely shot pictures are not clear enough, and even ghost images or blurring occur. These causes, in addition to occasional defocus (i.e., the camera fails to focus properly), are largely due to slight jitter that occurs when the photographic scene is exposed.

In an optical image stabilization system (i.e., an OIS system), the OIS reed is usually stressed unevenly, so that the optimization effect of the driving software is poor, and the performance of the lens motor is poor.

Therefore, the conventional technology has a problem of poor use performance of the OIS reed.

Disclosure of Invention

The invention mainly aims to provide a lens motor reed, a lens motor and a camera device, and aims to solve the problem that an OIS reed in the prior art is poor in service performance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a lens motor reed comprising: a body part having a central hole to avoid the lens, the body part being connected with an AF motor component of the lens motor; and the deflection arm extends out of the peripheral edge of the body part and extends along the peripheral direction of the body part, the extending end of the deflection arm is connected with the OIS base of the lens motor, and the deflection arm is not coplanar with the body part.

Further, at least one moment arm extension is formed along the bending of the bending arm in the extending direction of the bending arm, and the moment arm extension extends to the direction away from the central hole.

Further, the distance between the arm extension and the OIS base increases gradually along the extension direction of the arm extension.

Further, the circumferential edge of the body portion includes four straight side sections and a corner section connecting two adjacent straight side sections, and the moment arm extension is located at the corner section.

Further, the peripheral edge of the body portion comprises four straight edge sections and corner sections connecting two adjacent straight edge sections, the flexible arm comprises a first section, a transition section and a second section which are connected in sequence, the first section is close to the body portion relative to the second section, the first section and the second section respectively correspond to a group of two adjacent straight edge sections, and the cross-sectional area of the second section is larger than that of the first section.

Further, the cross-sectional area of the first section decreases in a direction approaching the transition section; and/or the cross-sectional area of the second section decreases in a direction closer to the transition section.

Furthermore, arm of force extension is U-shaped structure and includes first bending segment, second bending segment and the third bending segment of connecting in order, and the distance L between the surface that first bending segment is close to third bending segment one side and the surface that first bending segment keeps away from third bending segment one side is more than or equal to 0.10mm and is less than or equal to 0.15 mm.

Further, the cross-sectional area is equal at each location on the arm extension.

Further, the body portion has a projection projecting toward the second bent section.

Furthermore, the included angle between the bending arm and the plane of the main body part is more than or equal to 3 degrees and less than or equal to 4 degrees.

According to another aspect of the present invention, there is provided a lens motor comprising an OIS chassis, a shield case, an AF motor assembly, and a lens motor reed, wherein an accommodation space is formed between the shield case and the OIS chassis, the AF motor assembly and the lens motor reed are located in the accommodation space, and the lens motor reed is disposed between the OIS chassis and the AF motor assembly, wherein the lens motor reed is the above-mentioned lens motor reed.

Further, the OIS mount has a blade assembly with a relief space that mates with the arm extension of the flexure arm of the lens motor reed.

According to another aspect of the present invention, there is provided an image pickup apparatus including the lens motor described above.

With the technical scheme of the invention, the lens motor reed comprises a body part and a deflection arm. The body part is provided with a central hole to avoid the lens, and the body part is connected with an AF motor component of the lens motor; the deflection arm extends from the peripheral edge of the body part and extends along the periphery of the body part, the extending end of the deflection arm is connected with the OIS base of the lens motor, and the deflection arm is not coplanar with the body part.

When the lens motor reed with the structure is used, the deflection arm and the body part are not coplanar, so that the lens motor reed can have a certain tilting power, and the force applied by the lens motor reed moving in the X/Y axis horizontal direction can be correspondingly reduced. On the other hand, by so setting, it is also possible to enhance the tensile strength against the self weight of the AF motor assembly in the Z-axis optical axis direction.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic view of a lens motor reed according to an embodiment of the present invention;

FIG. 2 is a schematic diagram showing the positional relationship between the body portion and the flexure arms of the lens motor reed of FIG. 1;

FIG. 3 shows a schematic view of the lens motor of the present application;

Fig. 4 shows an exploded view of the lens motor of fig. 3.

Wherein the figures include the following reference numerals:

10. A body portion; 11. a central bore; 12. a straight side section; 13. a corner section; 14. a protrusion; 20. a flexure arm; 21. a moment arm extension; 211. a first bending section; 212. a second bending section; 213. a third bending section; 22. a first stage; 23. a transition section; 24. a second stage; 30. a shield case; 40. an AF motor assembly; 50. a PCB assembly; 60. pressing the mixture into tablets; 70. SMA wire; 80. pressing the mixture downwards; 90. an OIS support; 100. an OIS substrate; 200. and (4) an OIS base.

Detailed Description

it should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, 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 application belongs.

in the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that OIS reed performance is poor among the prior art, this application provides a lens motor reed, lens motor and camera device.

Wherein the image pickup apparatus includes a lens motor, and the lens motor in the present application has a lens motor reed described below.

the imaging device in the present application may be a mobile terminal with an imaging function, such as a mobile phone.

Also, it is to be noted that the lens motor reed in the present application may be an IOS reed.

As shown in fig. 1 and 2, the lens motor reed in the present application includes a body portion 10 and a flexure arm 20. The body portion 10 has a central hole 11 to avoid the lens, the body portion 10 is connected with the AF motor assembly 40 of the lens motor; the flexure arm 20 protrudes from the circumferential edge of the body portion 10 and extends along the circumference of the body portion 10, the extended end of the flexure arm 20 is connected with the OIS base 200 of the lens motor, and the flexure arm 20 is not coplanar with the body portion 10.

When the lens motor reed with the structure is used, the deflection arm 20 and the main body part 10 are not coplanar, so that the lens motor reed can have a certain tilting power, and the force applied when the lens motor reed moves in the X/Y axis horizontal direction can be correspondingly reduced. On the other hand, by so setting, it is also possible to enhance the tensile strength against the self weight of the AF motor assembly 40 in the Z-axis optical axis direction.

note that, in the present application, the main body 10 is connected to the bottom surface of the AF motor assembly 40.

Specifically, at least one moment arm extension 21 is formed along the flexure arm 20 bent in the direction of extension thereof, the moment arm extension 21 projecting away from the central bore 11. By arranging the moment arm extension part 21, the stress of the bending arm 20 can be effectively dispersed, so that the elasticity of the lens motor reed in the horizontal direction is relatively even, the driving software of the camera device can be better optimized, various performance data of the driving motor can be improved, and the camera shooting effect is further improved. Therefore, the problem of poor use performance of the OIS reed in the prior art can be effectively solved by arranging the moment arm extension part 21.

Specifically, the distance between the moment arm extension 21 and the OIS chassis 200 in the direction of extension thereof increases gradually. With this arrangement, the arm extension 21 can be effectively prevented from affecting the movement of the lens support.

Specifically, the circumferential edge of the body portion 10 includes four straight sections 12 and a corner section 13 connecting adjacent two straight sections 12, and the moment arm extension 21 is located at the corner section 13. By such an arrangement, the overall structure of the lens motor can be ensured to be more compact.

Specifically, the peripheral edge of the body portion 10 includes four straight sections 12 and a corner section 13 connecting two adjacent straight sections 12, the flexure arm 20 includes a first section 22, a transition section 23, and a second section 24 connected in sequence, the first section 22 is close to the body portion 10 relative to the second section 24, and the first section 22 and the second section 24 respectively correspond to a group of two adjacent straight sections 12, and the cross-sectional area of the second section 24 is larger than that of the first section 22.

Optionally, the cross-sectional area of the first section 22 decreases in a direction closer to the transition section 23.

Optionally, the cross-sectional area of the second section 24 decreases in a direction closer to the transition section 23.

By this arrangement, it is possible to effectively secure the use strength of the flexure arms 20 and prevent the flexure arms 20 from breaking during the movement of the body portion 10.

Optionally, the moment arm extension portion 21 has a U-shaped structure and includes a first bending section 211, a second bending section 212, and a third bending section 213 connected in sequence, and a distance L between a surface of the first bending section 211 close to the third bending section 213 and a surface of the first bending section 211 far from the third bending section 213 is greater than or equal to 0.10mm and less than or equal to 0.15 mm.

In a specific embodiment of the present application, the value of L is set to 0.12 mm.

Specifically, the cross-sectional area is equal throughout the arm extension 21. By the arrangement, the stress on each part of the moment arm extension part 21 can be more uniform, and the use strength of the moment arm extension part 21 can be ensured.

Optionally, the body portion 10 has a projection 14 projecting towards the second bend 212. By this arrangement, the force arm extension 21 can be restrained by the protrusion 14 during the movement of the body portion 10, and the force arm extension 21 can be prevented from being displaced.

Optionally, the angle between the flexing arm 20 and the plane of the body portion 10 is greater than or equal to 3 degrees and less than or equal to 4 degrees.

It should be noted that, as shown in fig. 3 and 4, the lens motor of the present application includes, in addition to the lens motor reed: shield can 30, PCB assembly 50, upper press 60, SMA wire 70, lower press 80, OIS mount 90, OIS substrate 100, and OIS chassis 200.

The OIS mount 200 has a clicker assembly with a relief space that mates with the moment arm extension 21 of the flexure arm 20 of the lens motor reed. It should be noted that the sheeting assembly herein may include the upper sheeting 60 and the lower sheeting 80 described above.

An accommodation space is formed between the shield case 30 and the OIS chassis 200, the AF motor assembly 40 and a lens motor reed are located in the accommodation space, and the lens motor reed is disposed between the OIS chassis 200 and the AF motor assembly 40.

And, the SMA wire 70 is fixedly connected to the lens motor reed. The SMA wire 70 contracts or expands under the action of the current and drives at least part of the OIS reed to move in a predetermined direction; the OIS bearer 90 is disposed on the OIS substrate 100, and the OIS reed is disposed on the OIS bearer 90, and the OIS reed is supported by the OIS bearer 90. The OIS mount 200 is disposed on a side of the OIS substrate 100 remote from the OIS mount 90 and is connected to the OIS substrate 100. The sides of the OIS chassis 200 have shield 30 ground sockets for receiving ground terminals of the shield 30. Wherein, the OIS reed is used to connect with the AF motor, so that at least a part of the OIS reed drives the AF motor to move along a predetermined direction when moving under the drive of the SMA wire 70. Wherein, the SMA wire 70 is a nickel titanium Alloy material, and SMA is an abbreviation of english Shape Memory Alloy, which means "Shape Memory Alloy". The SMA wire 70 has the characteristics of thermal shrinkage and cold expansion, and when current flows into the SMA wire 70, the SMA wire 70 is heated to begin to contract and overcome lateral elasticity; when the current is cut off, the biasing spring force overcomes the SMA wire 70 wire force and begins to cold expand. Specifically, the OIS substrate 100, the OIS carrier 90 and the OIS base 200 may be separate structures, or may be selectively combined into an integral structure, and the structures may be combined and adjusted as needed. In the present embodiment, the OIS substrate 100, the OIS carrier 90 and the OIS chassis 200 are all separate structures.

In the application, the anti-shake compensation function is realized by selecting the SMA wire 70 with the shape memory function, and specifically, the SMA wire 70 is fixed on the OIS reed; the OIS reed is arranged on the OIS support 90, and the SMA wire 70 is electrically connected with the tabletting assembly, so that the SMA wire 70 contracts or expands under the action of current and drives at least part of the OIS reed to move along a preset direction; wherein the OIS reed is used to connect to the AF motor. The length of the SMA wire 70 is changed by adjusting the current and utilizing the thermal shrinkage and cold expansion characteristics of the SMA wire 70, so that at least part of the OIS reed is subjected to position adjustment along the X axis and/or the Y axis, and the aim of carrying the AF motor is fulfilled by the pulling force of the SMA wire 70, so that the AF motor is subjected to position adjustment along the X axis and/or the Y axis quickly, and the aims of moving the whole lens in a micro-distance manner, changing the focal length and realizing the purpose of clearing images are fulfilled.

In addition, in the present embodiment, the OIS mount 90 and the OIS base 200 are configured to hold and connect the SMA wire 70 with the presser assembly, and the OIS mount 90 supports the OIS reed. The structure of each part is relatively simple, so that the production and the processing are convenient.

Specifically, the SMA wire 70 has a small power, high rigidity and stability, and can increase the reaction rate of the device.

The SMA wire 70 includes a plurality of SMA wires 70, the plurality of SMA wires 70 are disposed along the circumference of the OIS reed, one end of each SMA wire 70 is connected to the OIS reed, and the other end of each SMA wire 70 is a fixed end, and in this embodiment, the other end of each SMA wire 70 is fixed to the OIS substrate 100 through the lower pressing plate 80. Thus the SMA wire 70 can only reposition the end connected to the OIS reed when deformed.

Specifically, the number of the SMA wires 70 is four, and the four SMA wires 70 are a first SMA wire, a second SMA wire, a third SMA wire and a fourth SMA wire respectively; the first SMA wire and the third SMA wire are arranged in parallel, the second SMA wire and the fourth SMA wire are arranged in parallel, and the first SMA wire and the second SMA wire are arranged vertically.

In the application, the upper pressing sheet 60 is arranged on one side of the OIS reed, which is far away from the OIS support 90, the upper pressing sheet 60 is provided with an upper wire clamping groove, and one end of the SMA wire 70 is fixed in the upper wire clamping groove; the lower pressing sheet 80 is arranged on the OIS substrate 100, the lower pressing sheet 80 is arranged on the same side of the OIS support 90, a support avoiding opening is formed in the inner ring of the lower pressing sheet 80, and the OIS support 90 is located in the support avoiding opening. The flexure arms 20 are fixedly connected to a lower platen 80, the lower platen 80 having a lower clamping slot in which the other end of the SMA wire 70 is secured.