CN214540192U

CN214540192U - Driving device, lens module and electronic equipment

Info

Publication number: CN214540192U
Application number: CN202120484200.4U
Authority: CN
Inventors: 刘述伦; 罗超; 耿新龙
Original assignee: Guangdong Haideya Technology Co ltd
Current assignee: Guangdong Haideya Technology Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-10-29
Anticipated expiration: 2031-03-05

Abstract

The application provides a drive arrangement, lens module and electronic equipment, drive arrangement includes: a frame body; the SMA actuating mechanism group comprises two SMA actuating mechanisms and a driving block, the SMA actuating mechanisms comprise two fixing parts and at least one SMA wire, the fixing parts are arranged on the frame body, two ends of the SMA wire are respectively connected with the two fixing parts, and the SMA wires respectively comprised by the two SMA actuating mechanisms are respectively abutted with two opposite ends of the driving block; the driving block bends the SMA wires into a V shape, the V-shaped openings of the SMA wires included by the two SMA actuating mechanisms are opposite, and when the SMA wires are electrified and contracted, the driving block can be driven to move. The driving device has a simple structure and small occupied space, and can drive the lens module to move, thereby meeting the requirements of optical anti-shake and focusing of the lens module and not restricting the movement of the driven module.

Description

Driving device, lens module and electronic equipment

Technical Field

The present application relates to the field of electronics, and in particular, to a driving apparatus, a lens module, and an electronic device.

Background

At present, most of electronic devices are provided with a driving device for driving a lens module to perform multi-axis movement so as to realize an anti-shake or focusing function, thereby ensuring the imaging quality of the electronic device. The electronic device has a small internal space, the conventional driving device often restricts the movement of the driven module in the using process, and the driving device has a complex structure, so that the occupied space is too large, and the lightness and the thinness of the electronic device are affected.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a driving device, which is simple in structure and small in occupied space and can drive the lens module to move, so that the optical anti-shake and focusing requirements of the lens module are met, and the movement of the driven module cannot be restricted.

The application also provides a lens module and an electronic device.

An embodiment of the first aspect of the present application provides a driving apparatus, including: a frame body; the SMA actuating mechanism group comprises two SMA actuating mechanisms and a driving block, the SMA actuating mechanism comprises two fixing parts and at least one SMA wire, the fixing parts are arranged on the frame body, two ends of the SMA wire are respectively connected with the two fixing parts, and the SMA wires respectively arranged on the two SMA actuating mechanisms are respectively abutted with two opposite ends of the driving block; the driving block bends the SMA wire into a V shape, the opening directions of the V shape of the SMA wire, which are respectively included by the two SMA actuating mechanisms, are opposite, and when the SMA wire is electrified and contracted, the driving block can be driven to move.

According to the drive device of the embodiment of the application, at least the following technical effects are achieved:

two SMA actuating mechanisms in the SMA actuating mechanism group in the application can respectively drive the driving block to move through the SMA wires, and the driving block is connected with the driven piece, so that the driven piece can be driven to move through the driving device. The SMA wires respectively included by the two SMA actuating mechanisms are respectively abutted against two opposite sides of the driving block, after the SMA wires contract, the V-shaped SMA wires can push the driving block to move linearly, and the opening directions of the bending included angles of the SMA wires respectively included by the two SMA actuating mechanisms are opposite, so that the moving directions of the driving blocks driven by the SMA actuating mechanisms are opposite, and the driving blocks can move in the required directions by matching of the SMA wires. The driving device has a simple mechanism and cannot occupy excessive internal space of a lens module or electronic equipment with the driving device. Simultaneously, the SMA wire forms an included angle through the conflict of drive block to make when the SMA wire contracts, the distance that the drive block moved is greater than the length that the SMA wire contracted, thereby increase this drive arrangement's drive stroke, also make this drive arrangement make more slim under the prerequisite that satisfies the drive stroke.

According to some embodiments of the application, the SMA wire is coated with an insulating layer on a surface thereof.

According to some embodiments of the application, the included angle at which the SMA wire is bent is an obtuse angle.

According to some embodiments of the application, the driving block is provided with two grooves, the two grooves are respectively arranged at two opposite ends of the driving block, and the SMA wire is clamped into the grooves and abutted to the driving block.

According to some embodiments of the present application, there are four sets of SMA actuation mechanisms, the sets of SMA actuation mechanisms being disposed opposite each other in pairs.

A second aspect of the present application provides a lens module, which includes the driving apparatus of the first aspect of the present application, and further includes a liquid lens, capable of changing a curvature focal length by contact compression; and the focusing ring is arranged below the liquid lens, is connected with the driving block, and can move up and down along with the driving block so as to contact and extrude the liquid lens.

According to the lens module of the embodiment of the second aspect of the present application, at least the following advantages are provided: by arranging the driving device of the embodiment of the first aspect of the present application, the focusing ring is driven by the driving device to press the liquid lens to adjust the focal length of the lens. On the other hand, the driving device has a large driving stroke and occupies a small space of the lens module, so that the lens module can be made thinner.

According to some embodiments of the present application, the focusing ring is provided with a bending surface, and the bending surface is in fit connection with the driving block.

According to some embodiments of the application, the plane of buckling has seted up the perforation, the drive block be provided with perforation assorted lug, the lug card is gone into the perforation.

According to some embodiments of the application, further comprising: and the fixed lens is arranged below the focusing ring.

The electronic equipment according to the embodiment of the third aspect of the present application comprises the lens module according to the embodiment of the second aspect of the present application.

According to the lens module of the embodiment of the third aspect of the present application, at least the following advantages are provided: the driving device comprises the driving device and the lens module, the driving stroke of the driving device is large, and the occupied space is small, so that the electronic equipment with the driving device can be made thinner.

Additional aspects and advantages of the present 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 the present application.

Drawings

The above and or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a driving device according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an SMA driving mechanism group and a driving block in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a lens module according to an embodiment of the present disclosure;

FIG. 4 is another schematic structural diagram of a lens module according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of the combination of the driving block and the focus ring in the embodiment of the present application.

Reference numerals:

the SMA actuating mechanism 100, the fixing part 110, the clamping structure 111, the SMA wire 120, the driving block 200, the protrusion 210, the groove 220, the frame body 300, the liquid lens 400, the focus ring 500, the bending surface 510, the through hole 511, the protrusion 520, and the fixed lens 600.

Detailed Description

Reference will now be made in detail to embodiments of the present application, 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 drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional or positional relationships referred to in the positional descriptions, such as up, down, front, rear, left, right, and the like, are based on the positional or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, a plurality means two or more, and greater than, less than, more than, etc. are understood as excluding the present number, and greater than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected, etc., should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application in view of the detailed contents of the technical solutions.

A driving apparatus according to an embodiment of the present application is described below with reference to fig. 1 and 2.

Referring to fig. 1, fig. 1 shows a driving apparatus of an embodiment of the present application, which includes: a frame body 300; the SMA actuating mechanism group comprises two SMA actuating mechanisms 100 and a driving block 200, the SMA actuating mechanism 100 comprises two fixing parts 110 and at least one SMA wire 120, the fixing parts 110 are arranged on the frame body 300, two ends of the SMA wire 120 are respectively connected with the two fixing parts 110, and the SMA wires 120 respectively comprised by the two SMA actuating mechanisms 100 are respectively abutted with two opposite ends of the driving block 200; the driving block 200 bends the SMA wire 120 into a V shape, the V-shaped openings of the SMA wires 120 included in the two SMA actuation mechanisms 100 are opposite, and when the SMA wires 120 are electrified and contracted, the driving block 200 can be driven to move.

Referring to fig. 1, in some embodiments, an SMA actuation mechanism 100 of the present application includes one SMA wire 120. It is understood that, in order to increase the driving force of the SMA actuation mechanism 100, the number of SMA wires 120 included may be two, three or more, and is not limited thereto.

Referring to fig. 1, in some embodiments, a rack 300 of the present application includes a base plate and a plurality of protruding structures disposed on the base plate. The two fixing portions 110 of the SMA actuating mechanism 100 are disposed on the protruding structure and located at two ends of the frame 300, and a slide for the driving block 200 to slide is disposed in the frame 300. In some embodiments, referring to fig. 1, there are two protruding structures on which the two fixing portions 110 connecting the two ends of the SMA wire 120 are located, and two of the protruding structures are separated to define a slideway. The position of the protruding structure where the fixing portion 110 is disposed is correspondingly provided with a connecting platform recessed relative to the surface of the protruding structure, and the fixing portion 110 is disposed on the connecting platform. Through setting up recessed connection platform, avoid the fixed part to overlap on support body 300 to lead to this drive arrangement to be too thick.

Referring to fig. 2, in some embodiments, a hook-shaped clamping structure 111 is disposed on the fixing portion 110, and the clamping structure 111 is used for clamping the SMA wire 120 connected thereto, so as to meet the requirement of fixedly connecting the fixing portion 110 and the SMA wire 120. It is understood that the SMA wire 120 may also be welded to the fixing portion 110 to satisfy the fixing effect, which is not limited thereto.

Referring to fig. 1, in some embodiments, two fixing portions 110 of one SMA actuation mechanism 100 are disposed at upper positions in a frame body 300, and SMA wires of the SMA actuation mechanism 100 are abutted against the lower end of a driving block 200; the two fixing portions 110 of the other SMA actuation mechanism 100 are disposed at a lower position in the frame 300, that is, below the two fixing portions 110 of the previous SMA actuation mechanism 100, and the SMA wires in the another SMA actuation mechanism 100 abut against the upper end of the driving block 200. By such arrangement, the SMA wires 120 in the two SMA actuation mechanisms 100 are bent into a V shape by the same drive block 200, and the openings of the SMA wires 120 included in the two SMA actuation mechanisms 100 are opposite to each other, so as to meet the requirement that the drive block 200 can move in two opposite directions. By such an arrangement, the thickness of the driving device in the vertical direction can be made as close as possible to the height of the driving block 200, and the driving device can be made thinner.

In the SMA actuation mechanism set of the present application, two SMA actuation mechanisms 100 can respectively drive a driving block 200 to move through an SMA wire 120, and the driving block 200 is connected with a driven member, that is, the driven member can be driven to move through the driving device. The SMA wires 120 respectively included in the two SMA actuation mechanisms 100 are respectively abutted against two opposite sides of the driving block 200, and after the SMA wires 120 are contracted, the V-shaped SMA wires 120 can push the driving block 200 to move linearly, and the opening directions of the bending included angles are opposite, so that the moving directions of the driving blocks 200 driven by the SMA wires 120 respectively included in the two SMA actuation mechanisms 100 are also opposite, that is, the driving block 200 can move in a required direction by matching of the SMA wires 120. The driving device has a simple mechanism and cannot occupy excessive internal space of a lens module or electronic equipment with the driving device. Meanwhile, the SMA wire 120 forms an included angle by the driving block 200, so that when the SMA wire 120 contracts, the moving distance of the driving block 200 is greater than the contracting length of the SMA wire 120, the driving stroke of the driving device is increased, and the driving device can be made thinner on the premise of meeting the driving stroke.

Referring to fig. 2, in some embodiments of the present application, SMA wire 120 is surface coated with an insulating layer. One SMA actuation mechanism set comprises two SMA actuation mechanisms 100 comprising SMA wires 120, each SMA wire 120 cooperating to perform the drive function of the drive module. By coating the insulating layer on the SMA wires 120, the short circuit of the driving apparatus caused by the contact of the SMA wires 120 is avoided, and further, the SMA wires 120 are allowed to contact with each other, so that more SMA wire 120 arrangement modes can be satisfied. It will be appreciated that the insulating layer may be applied to the intersection of the SMA wires 120, and that the insulating layer need not be applied to the entire SMA wire 120, to achieve the technical effect of preventing contact shorting of the SMA wires 120.

Referring to fig. 2, according to some embodiments of the present application, SMA wire 120 is bent at an obtuse angle. By the arrangement, the length of the driving device in the driving direction is reduced, namely the thickness of the driving device is reduced, so that the driving device can be made thinner under the condition of increasing the driving stroke.

Referring to fig. 2, according to some embodiments of the present application, two grooves 220 are formed on the driving block 200, the two grooves 220 are respectively formed at opposite ends of the driving block 200, and each SMA wire 120 is respectively snapped into the grooves 220 to abut against the driving block 200. The two grooves 220 are arranged at two opposite ends of the driving block 200 in the moving direction, the SMA wire 120 is clamped into the grooves 220, the driving block 200 can be driven to move in a required direction by electrifying and contracting the SMA wire 120, and the risk of falling and dislocation of the SMA wire 120 is avoided. Further, referring to fig. 2, the groove 220 is provided with an arc-shaped lead angle to prevent the SMA wire 120 from being scratched or even broken by the edge of the groove 220 during movement.

Referring to fig. 1, there are four sets of SMA actuation mechanisms according to some embodiments of the present application, with the sets of SMA actuation mechanisms being disposed opposite each other in pairs. Further, it encloses a square on the frame body 300. By such an arrangement, the driven member mounted above the frame 300 can be driven to move by the four driving blocks 200, and meanwhile, each SMA actuating mechanism set can be controlled separately, and each driving block 200 can move different distances in its respective moving direction, so that the driven member can move in a translational or rotational motion on the frame 300.

The following describes a lens module according to an embodiment of the second aspect of the present application, which includes the driving device according to an embodiment of the first aspect of the present application. Referring to fig. 3, in some embodiments of the present application, the lens module further includes a liquid lens 400 capable of changing a curvature focal length by contact pressing; and a focus ring 500 disposed below the liquid lens 400 and connected to the driving block 200 to be movable up and down with the driving block 200 to contact and press the liquid lens 400.

The lens module includes a liquid lens 400. The focusing ring 500 is disposed below the liquid lens 400 and connected to the driving block 200. When the SMA wires 120 are energized and contracted, the driving block 200 is driven to move, and the focusing ring 500 is driven to squeeze the liquid lens 400 to change the curvature focal length thereof. On the other hand, the driving device has a large driving stroke and occupies a small space of the lens module, so that the lens module can be made thinner. In some embodiments, the focus ring 500 is provided with a protrusion 520, and the protrusion 520 abuts against the liquid lens 400, so that the liquid lens 400 changes the curvature focal length by moving the pressing. The protrusion 520 is provided to enhance the squeezing effect of the focus ring 500 on the liquid lens 400.

Referring to fig. 3 to 5, according to some embodiments of the present application, the focus ring 500 is provided with a bending surface 510, and the bending surface 510 is attached to the driving block 200. When the focus ring 500 is disposed above the driving device, in order to make the focus ring be well connected to the driving device, a downward bending surface 510 is disposed on the focus ring 500, so that the driving block 200 can be attached to the focus ring 500. Through such arrangement, the bending surface 510 is approximately perpendicular to the horizontal plane of the focusing ring 500 above the bending surface, and the focusing ring 500 is driven to move without adopting a mode that the top of the driving block 200 is contacted with the focusing ring 500, so that the focusing ring 500 is prevented from influencing the normal movement of the driving block 200, and the focusing ring 500 and the driving block 200 can move more smoothly.

Referring to fig. 5, the bending surface 510 is further provided with a through hole 511, the driving block 200 is provided with a protrusion 210 matching with the through hole 511, and the protrusion 210 is snapped into the through hole 511. The through hole 511 on the bending surface 510 and the protrusion 210 on the driving block 200 are correspondingly arranged, so that the bending surface 510 and the driving block 200 can be well connected and can be conveniently assembled and disassembled with each other. In other embodiments, the bending surface 510 and the driving block 200 can be connected by welding, but in this way, the bending surface 510 and the driving block 200 cannot be easily separated.

Referring to fig. 4, further, the lens module further includes: the lens 600 is fixed, and the lens 600 is disposed below the focus ring 500. By this arrangement, an image zoomed by the liquid lens 400 can be transmitted to the fixed lens 600 through the focus ring 500.

An electronic device of an embodiment of the third aspect of the present application is described below, which includes the lens module of the embodiment of the second aspect of the present application. This electronic equipment, through setting up the camera lens module of this application second aspect embodiment, this camera lens module simple structure, it is small, can install in electronic equipment in order to satisfy focusing and the anti-shake function in electronic equipment makes a video recording, can also guarantee this electronic equipment's slimming simultaneously. In some embodiments, an electronic device includes a housing. Further, the inner side of the housing is coated with an insulating layer to prevent the metal housing from contacting the SMA wire 120 inside the metal housing, which may cause a short circuit phenomenon.

The driving apparatus, the lens module and the electronic device of the present application are described in detail with reference to fig. 1 to 5. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.

The electronic device of this embodiment includes the lens module of this embodiment, and the lens module of this embodiment includes the driving apparatus of this embodiment.

An embodiment of the first aspect of the present application provides a driving apparatus, which includes: a frame body 300; an SMA actuation mechanism set comprising two SMA actuation mechanisms 100 and one drive block 200. The SMA actuation mechanism 100 includes two fixed portions 110 and one SMA wire 120. The fixing portion 110 is disposed on the frame body 300, two ends of the SMA wire 120 are respectively connected to the two fixing portions 110, and the SMA wires 120 respectively included in the two SMA actuation mechanisms 100 are respectively abutted to two opposite ends of the driving block 200. Further, the driving block 200 bends the SMA wire 120 into a V shape, and the two SMA actuation mechanisms 100 respectively include SMA wires 120 with the V-shaped openings facing away from each other. When the SMA wire 120 is electrified and contracted, the driving block 200 can be driven to move. The SMA wire 120 is coated with an insulating layer on its surface and bent at an obtuse angle. The driving block 200 is provided with two grooves 220, the two grooves 220 are respectively arranged at two opposite ends of the driving block 200, and the SMA wires 120 included in the two SMA actuation mechanisms 100 are clamped into the grooves 220 to abut against the driving block 200. The SMA actuating mechanism group has four groups, and the SMA actuating mechanism groups are arranged in pairs and opposite to each other, and form a square on the frame body 300.

The lens module, which includes the driving device of the first embodiment of the present application, further includes a liquid lens 400, which can change the curvature focal length by contact compression. The lens module further includes a focusing ring 500 disposed below the liquid lens 400 and connected to the driving block 200, and capable of moving up and down along with the driving block 200 to contact and squeeze the liquid lens 400. The focusing ring 500 is provided with a bending surface 510, and the bending surface 510 is attached to the driving block 200. The bending surface 510 is provided with a through hole 511, the driving block 200 is provided with a protrusion 210 matching with the through hole 511, and the protrusion 210 is inserted into the through hole 511. The lens module further includes: the lens 600 is fixed, and the lens 600 is disposed below the focus ring 500.

According to the driving device, the lens module and the electronic equipment provided by the embodiment of the application, at least some following technical effects can be achieved through the arrangement: in the SMA actuation mechanism set of the present application, two SMA actuation mechanisms 100 can respectively drive a driving block 200 to move through an SMA wire 120, and the driving block 200 is connected with a driven member, that is, the driven member can be driven to move through the driving device. The SMA wires 120 respectively included in the two SMA actuation mechanisms 100 are respectively abutted against two opposite sides of the driving block 200, and after the SMA wires 120 are contracted, the V-shaped SMA wires 120 can push the driving block 200 to move linearly, and the opening directions of the bending included angles are opposite, so that the moving directions of the driving blocks 200 driven by the SMA wires 120 respectively included in the two SMA actuation mechanisms 100 are also opposite, that is, the driving block 200 can move in a required direction by matching of the SMA wires 120. The driving device has a simple mechanism and cannot occupy excessive internal space of a lens module or electronic equipment with the driving device. Meanwhile, the SMA wire 120 forms an included angle by the driving block 200, so that when the SMA wire 120 contracts, the moving distance of the driving block 200 is greater than the contracting length of the SMA wire 120, the driving stroke of the driving device is increased, and the driving device can be made thinner on the premise of meeting the driving stroke.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, those of ordinary skill in the art will understand that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and the equivalents.

Claims

1. A drive device, comprising:

a frame body;

the SMA actuating mechanism group comprises two SMA actuating mechanisms and a driving block, the SMA actuating mechanism comprises two fixing parts and at least one SMA wire, the fixing parts are arranged on the frame body, two ends of the SMA wire are respectively connected with the two fixing parts, and the SMA wires respectively arranged on the two SMA actuating mechanisms are respectively abutted with two opposite ends of the driving block; wherein the content of the first and second substances,

the driving block bends the SMA wire into a V shape, the opening directions of the V shape of the SMA wire, which are respectively included by the two SMA actuating mechanisms, are opposite, and when the SMA wire is electrified and contracted, the driving block can be driven to move.

2. The drive device according to claim 1, characterized in that: and an insulating layer is coated on the surface of the SMA wire.

3. The drive device according to claim 1, characterized in that: the included angle formed by bending the SMA wire is an obtuse angle.

4. The drive device according to claim 1, characterized in that: the driving block is provided with two grooves which are respectively arranged at two opposite ends of the driving block, and the SMA wire is clamped into the grooves and abutted against the driving block.

5. The drive device according to any one of claims 1 to 4, characterized in that: the SMA actuating mechanism groups are four in number, and the SMA actuating mechanism groups are arranged oppositely in pairs.

6. The lens module includes:

the drive device according to any one of claims 1 to 5;

a liquid lens capable of changing a curvature focal length by contact extrusion;

and the focusing ring is arranged below the liquid lens, is connected with the driving block, and can move up and down along with the driving block so as to contact and extrude the liquid lens.

7. The lens module as set forth in claim 6, wherein: the focusing ring is provided with a bending surface, and the bending surface is attached to and connected with the driving block.

8. The lens module as set forth in claim 7, wherein: the bending surface is provided with a through hole, the driving block is provided with a protruding part matched with the through hole, and the protruding part is clamped into the through hole.

9. The lens module as claimed in any one of claims 6 to 8, further comprising: and the fixed lens is arranged below the focusing ring.

10. An electronic device, comprising: the lens module of any one of claims 6 to 9.