CN201273953Y - Lens actuating device - Google Patents

Abstract

The utility model provides a lens actuating device, which comprises a fixed part, a movable part and at least one elastic sheet part; the movable piece is movably combined in the fixed piece, the elastic piece is provided with an outer frame piece, an inner frame piece arranged in the outer frame piece in an adjacent mode, a first connecting arm and a second connecting arm, the first connecting arm and the second connecting arm extend from the inner wall of the outer frame piece to be connected with the inner frame piece, two first positioning portions are symmetrically arranged on the outer frame piece, two second positioning portions are symmetrically arranged on the inner frame piece, the second positioning portions are arranged relative to the first positioning portions, the two first positioning portions and the two second positioning portions are located in the same linear direction, the first connecting arm and the second connecting arm are arranged oppositely and are arranged at intervals in a staggered mode with the two first positioning portions, the first positioning portions are in contact with the fixed piece, and the second positioning portions are in contact with the movable piece. By the design, the utility model has the advantages that the movable piece is reduced to slightly rotate, so that the problem that the movable piece is damaged due to collision to the elastic piece is solved.

Description

lens actuator

technical field

The utility model relates to a lens actuating device, in particular to a lens actuating device which can be applied to driving the lens of a miniature imaging module.

Background technique

In recent years, it has become increasingly common for handheld devices such as mobile phones and PDAs to be equipped with imaging modules. With the market demand for better functions and smaller volumes of handheld devices in the product market, imaging modules have become increasingly popular. Faced with the dual requirements of higher image quality and miniaturization. For the improvement of the picture quality of the imaging module, on the one hand, it is to increase the pixels. The market trend has been improved from the original VGA level of 30 pixels to the current common 2 million pixels, 3 million pixels, and even worse. Introduce a higher level of 5 megapixels or more. In addition to the improvement of pixels, another concern is the clarity of image capture. Therefore, the image capture module of handheld devices has also developed from the fixed-focus image capture function to the optical auto-focus function similar to a camera, or even the optical zoom function.

The operating principle of the optical autofocus function is to properly move the lens in the imaging module according to the different distances and short distances of the target, so that the optical image of the captured target can be accurately focused on the image sensor to produce clear image. Currently, common actuation methods for moving the lens in the imaging module include stepping motor actuation, piezoelectric actuation, and voice coil motor (Voice Coil Motor, VCM) actuation.

Generally speaking, the mechanism of a voice coil motor is mainly composed of a coil placed in a magnetic circuit containing a permanent magnet. According to the left-hand rule, when the coil conducts electricity, it will generate a driving force that interacts with the permanent magnet to move. Connect the bearing seat of the permanent magnet, and then drive the lens assembly fixed in the bearing seat, and achieve the purpose of optical zoom and focus by adjusting the magnitude of the current flowing through the coil. However, the actuation/reset change speed of the voice coil motor is relatively slow compared to the change speed of several milliseconds in other actuation methods, so at least one element is added to the mechanism of the voice coil motor shrapnel to accelerate the change speed of actuation/reset.

Please refer to Fig. 1, as Japanese Patent Application Laid-Open No. 2006-201525 discloses a shrapnel 1a of a lens driving device, which has an outer ring circumference 11a, three branches extending from the inner wall of the outer ring circumference 11a and then continuously bent. Arm 12a, and an inner ring circumference 13a that is located in the outer ring circumference 11a and is connected with the end of the support arm 12a, utilizes the inner ring circumference 13a of the elastic piece 1a to be fixed on the lens assembly of the lens driving device, and the outer ring circumference 11a is fixed on On the supporting seat, and through the elastic force of the elastic piece 1a, the purpose of positioning/resetting of the voice coil motor is achieved.

As shown in Figure 2, Japanese Patent Laid-Open No. 2003-295033 also discloses a shrapnel 1b of a lens driving device, which reveals two symmetrical C-shaped arc elastic arms 11b and a ring connector 12b, which are stamped and finished. After the elastic piece 1b, the arc-shaped elastic arms 11b are bent and extended at a first positioning end 111b, and then bent and extended to form an elastic arm 112b, and a second positioning end 113b is formed at its end, and the ring connector 12b connects the two arc-shaped elastic arms 11b to position them. In addition, during installation, the first positioning end 111b and the second positioning end 113b of the two arc-shaped elastic arms 11b are respectively positioned on the lens assembly and the bearing seat, and the ring connector 12b needs to be cut off by a cutting process. Only then can the two arc-shaped elastic arms 11b serve the purpose of providing positioning/resetting of the voice coil motor.

However, when the shrapnel in the above two patent applications is driven by the lens assembly and moves in the vertical (axial) direction, the lens assembly tends to rotate slightly, and then collides with the shrapnel and damages it, which may eventually cause the shrapnel Lose desired utility.

Secondly, the shrapnel is formed by stamping, but when the design is more complicated, such as the above-mentioned Japanese Patent Application Laid-Open No. 2006-201525, the support arm presents a continuous bending state, which increases the difficulty in the development and design of the stamping die. , cost and finished product yield and other issues.

In addition, in the aforementioned Japanese Patent Laid-Open No. 2003-295033, after the shrapnel has been blanked and stamped, it needs to go through a cutting action (that is, cutting off the connecting piece). In this way, an additional process operation is added, thereby increasing the Questions such as cost and man-hours.

In addition, please refer to Fig. 3 and Fig. 4 again, as Japanese Patent Application Laid-Open No. 2008-026619 also discloses a lens driving device, its upper elastic piece 91a is sandwiched between the shell 93a and the top frame seat 94a, and the outer surface of the upper elastic piece 91a The ring portion 911a is fixed completely between the outer shell 93a and the top frame seat 94a, and the inner ring portion 912a of the upper elastic piece 91a is fixed on the lens mount 96a for the purpose of positioning/resetting the lens mount 96a. The lower elastic piece 92a is sandwiched between the bottom frame seat 95a and the lens holder 96a, and an insulating ring piece 97a is sleeved outside the lens holder 96a and presses the outer ring portion 921a of the lower elastic piece 92a, so that the lower elastic piece 92a is fixed on the bottom frame On the seat 95a, the outer ring portion 921a and the inner ring portion 922a of the lower elastic piece 92a are clamped in this way, so there is no possibility of flexibility.

In addition, more importantly, the wrist 913a of the upper elastic piece 91a connects the inner and outer ring parts 911a, 912a, and is used as a flexible elastic section when the outer ring part 911a and the inner ring part 912a move relatively, but the wrist The portion 913a is designed in a continuous bending manner, so it is not easy to manufacture, and it is easy to be deformed and damaged.

Utility model content

The main purpose of the present invention is to provide a lens actuator, which can improve and reduce the slight rotation of the movable part of the lens actuator, so as to improve and reduce the problem of collision to the shrapnel and damage it.

The purpose of this utility model is to provide a lens actuator, the overall design of the shrapnel used in it achieves a relatively simple purpose, so as to reduce the difficulty and cost of stamping die development and design, and has the advantage of improving the yield rate of finished products effect.

Another object of the present invention is to provide a lens actuating device. The elastic piece used in the overall design can reduce the redundant material cutting action, so as to reduce the cost and man-hour.

In order to achieve the above purpose, the utility model provides a lens actuator, comprising: a fixed part; a moving part, which can move relative to the fixed part and is combined in the fixed part; and at least one elastic piece, which has at least one The outer frame sheet, at least one inner frame sheet adjacent to the outer frame sheet, and the first connecting arm and the second connecting arm extending from the inner wall of the outer frame sheet in a sheet shape to connect the inner frame sheet, the outer frame sheet Two first positioning portions symmetrically arranged are formed on the frame sheet, and two second positioning portions symmetrically arranged are formed on the inner frame sheet, and the second positioning portion of the inner frame sheet is opposite to the first positioning portion of the outer frame sheet. The positioning part is arranged so that the first positioning part and the second positioning part are located in the same linear direction, the first connecting arm and the second connecting arm are arranged oppositely, and are staggered and equidistant from the first positioning part, and the outer frame piece The first positioning part of the inner frame piece is in contact with the fixed part, and the second positioning part of the inner frame sheet is in contact with the moving part; wherein, the moving part moves relative to the fixed part, and the second positioning part of the inner frame piece moves away from the When the fixed part moves in a direction, the second positioning part exerts an elastic restoring force on the moving part.

The utility model has the beneficial effect that two first positioning parts and two second positioning parts are symmetrically formed on the inner frame piece and the outer frame piece through the elastic piece, and then contact and locate the moving part in the same linear direction. And on the fixed part, in this way, it can reduce the situation that the moving part rotates slightly, so as to improve and reduce the problem of collision to the shrapnel and damage it.

Secondly, the utility model constitutes the elastic piece through the outer frame piece, the inner frame piece, and the first connecting arm and the second connecting arm extending in a sheet shape. The difficulty and cost of mold development and design, and the effect of improving the yield of finished products.

Furthermore, the shrapnel parts of the utility model can be made after blanking and punching, and can be arranged on the moving parts and the fixed parts. Compared with the prior art, the utility model reduces the unnecessary cutting Action to have the function of reducing cost man-hours.

In order to further understand the features and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model. However, the attached drawings are only for reference and illustration, and are not intended to limit the present utility model.

Description of drawings

Fig. 1 is the plan view of the shrapnel of existing lens driving device;

FIG. 2 is a perspective view of a shrapnel of another existing lens driving device;

FIG. 3 is an exploded perspective view of yet another existing lens driving device;

FIG. 4 is a perspective view of another existing shrapnel of a lens driving device;

5 is a perspective view of the lens actuator of the present invention;

Fig. 6 is a top view of the lens actuator of the present invention;

7 is a top view of the elastic piece of the first embodiment of the lens actuator of the present invention;

Fig. 8 is a schematic diagram of the flexible deformation of the elastic piece of the lens actuator device of the present invention;

9 is a plan view of the elastic piece of the second embodiment of the lens actuator of the present invention;

Fig. 10 is another perspective view of the second embodiment of the lens actuator of the present invention;

Fig. 11 is a top view of the elastic piece of the third embodiment of the lens actuator of the present invention;

Fig. 12 is a top view of the elastic piece of the fourth embodiment of the lens actuator of the present invention;

Fig. 13 is another perspective view of the lens actuator of the present invention;

FIG. 14 is another perspective view of the lens actuator of the present invention.

Explanation of main component symbols

Shrapnel 1a

Outer Ring Circumference 11a Support Arm 12a

Circumference of inner ring 13a

Shrapnel 1b

Arc Elastic Arm 11b First Positioning End 111b

elastic arm 112b second positioning end 113b

Ring connector 12b

Upper shrapnel 91a Outer ring part 911a

Inner Ring 912a Wrist 913a

Lower shrapnel 92a Outer ring part 921a

Inner Ring 922a Shell 93a

Top frame seat 94a Bottom frame seat 95a

Lens mount 96a Insulation ring 97a

Lens Assembly 2

Fixing seat 3

Base 31 Through Hole 32

convex part 33

Coil Assembly 4

Magnetic Assembly 5

The first magnet 51 Magnetic material parts 52

The second magnet 53

Shrapnel pieces 6

Outer frame 61

  First Positioning Department 611

The first connecting arm 62a

Second connecting arm 62b

Inner frame 63

The second positioning department 631

Punching 64

Shrapnel piece 6’

Outer frame 61'

  First Positioning Department 611’

The first connecting arm 62'a

First connecting arm 62'b

Inner frame 63'

The second positioning unit 631’

Shrapnel 6”

The first outer frame piece 61”a

The second outer frame piece 61”b

The first positioning department 611”

First connecting arm 62”a

Second connecting arm 62”b

First inner frame piece 63”a

Second inner frame piece 63”b

The second positioning part 631”

Detailed ways

Please refer to FIG. 5 to FIG. 7 , which are the first embodiment of the present utility model. The utility model provides a lens actuator, which includes a lens component 2 , a fixing base 3 , a coil component 4 , at least one magnetic component 5 and at least one elastic piece 6 .

The lens assembly 2 can provide a lens (not shown) for taking images, and the lens assembly 2 and the magnetic assembly 5 constitute a moving part of the present invention after being assembled, and the magnetic assembly 5 can include a The first magnet 51, a magnetic permeable material part 52 and a second magnet 53, the first magnet 51 and the second magnet 53 are combined on the two sides of the magnetic permeable material part 52 with the same magnetic poles opposite to form the magnetic assembly 5 . After the fixed seat 3 and the coil assembly 4 are assembled, a fixed part in the utility model can be formed, and the movable part is combined in the fixed part so as to be movable relative to the fixed part. When the coil assembly 4 is energized, an electromagnetic field is generated, and the electromagnetic field interacts with the magnetic field lines of the magnetic assembly 5 to generate an electromagnetic thrust, which can be used to push the movable element to move axially on the fixed element.

In addition, the above assembly method can be changed in different ways, the magnetic assembly 5 can be assembled on the fixed seat 3 to form a fixed part, and the coil assembly 4 can be assembled to the lens assembly 2 to form a moving part, so as to achieve the same purpose as above (here Examples are not shown in the drawings).

In this embodiment, the elastic piece 6 is set as an embodiment, and in the utility model, the elastic piece 6 is a component made by punching, and has at least one outer frame piece 61, a first connecting arm 62a, The second connecting arm 62b and at least one inner frame sheet 63, the inner frame sheet 63 is adjacent to the outer frame sheet 61, and extends in a sheet form from the inner wall of the outer frame sheet 61 by the first connecting arm 62a and the second connecting arm 62b. Connect the inner frame sheet 63 so that the inner frame sheet 63 can be located in the outer frame sheet 61. And, the outer frame sheet 61 is formed with two symmetrically arranged first positioning portions 611, and the inner frame sheet 63 is formed with two symmetrically arranged second positioning portions 631, and the second positioning portion 631 of the inner frame sheet 63 is opposite to the outer frame sheet 63. The first positioning portion 611 of the frame piece 61 makes the two first positioning portions 611 and the two second positioning portions 631 in the same linear direction, and the first connecting arm 62a and the second connecting arm 62b are arranged oppositely, and The first positioning parts 611 are arranged in a staggered manner.

In the first embodiment of the present utility model, the outer frame piece 61 and the inner frame piece 63 of the elastic piece 6 are each a frame piece surrounding a hollow closed body.

The above-mentioned fixing base 3 may have a base portion 31 , a through hole 32 penetrating through the central portion of the base portion 31 , and two protrusions 33 extending from obliquely opposite side ends of the base portion 31 .

The movable part of the lens assembly 2 is arranged at the through hole 32 of the fixed seat 3, and the elastic piece 6 is assembled on the fixed seat 3 and the lens assembly 2, and the first positioning part 611 of the outer frame piece 61 is contacted and positioned on the fixed seat. 3 on the corresponding convex portion 33, and the second positioning portion 631 of the inner frame piece 63 is positioned on the top of the lens assembly 2 in contact.

When the coil component 4 conducts electricity and then interacts with the magnetic component 5, the generated electromagnetic force pushes the lens component 2 of the moving part to move relative to the fixed seat 3 of the fixed part, and the lens component 2 can drive the inner frame at the same time 63 of the second positioning part 631, so that it moves away from the fixed seat 3 (that is, elastically deformed), and the two second positioning parts 631 that the elastic piece 6 moves will simultaneously apply an elastic restoring force to the lens assembly 2; when adjusting When the current of the coil assembly 4 is large or closed, the restoring force generated by the elastic piece 6 can cause the lens assembly 2 to produce a positioning/resetting effect. Simultaneously, please cooperate and refer to Fig. 8 again, all possess flexible elastic force through outer frame sheet 61 and inner frame sheet 63, and take most of the periphery of elastic sheet part 6 as flexible elastic section, then can effectively disperse The stress generated on the elastic piece 6 when the piece and the fixed piece move relatively makes the elastic piece 6 not easily deformed and damaged. On the other hand, the first connecting arm 62a and the second connecting arm 62b do not need to fully bear the flexible elasticity when the moving part moves, so the first connecting arm 62a and the second connecting arm 62b are appropriately thickened in the design of this embodiment. In order to disperse the received stress, the elastic piece 6 is not easily deformed and damaged. In addition, in this embodiment, the outer frame piece 61 and the inner frame piece 63 of the elastic piece 6 are designed in a polygonal shape, and the first positioning portion 611 is two opposite ends of the outer frame piece 61 .

Please refer to Fig. 9 and Fig. 10, which is the second embodiment of the present utility model, which is different from the above-mentioned embodiments in that the outer frame piece 61' and the inner frame piece 63' of the elastic piece 6' are a ring Shaped frame design, the first positioning portion 611 ′ extends from the outer wall of the outer frame 61 ′, and the second positioning portion 631 ′ extends from the inner wall of the inner frame 63 ′.

In this embodiment, the elastic piece 6' is assembled at the bottom of the base 31 of the fixed base 3, so that the first positioning part 611' of the outer frame piece 61' is positioned on the bottom of the base 31, and the inner frame piece 63' The second positioning portion 631 ′ is positioned in contact with the bottom of the lens assembly 2 . As described above, when the lens assembly 2 moves, it can drive the second positioning portion 631' of the inner frame 63' to move, and then apply a restoring force to the lens assembly 2. In this embodiment, it also has the same characteristics as the above-mentioned embodiments, that is, the outer frame piece 61' and the inner frame piece 63' also have flexible elastic force, and most of the surroundings of the elastic piece 6' are used as flexible The flexible elastic section can effectively disperse the stress on the elastic piece 6' when the moving piece and the fixed piece move relative to each other, so that the elastic piece 6' is not easily deformed and damaged; in addition, the first connecting arm 62' of this embodiment a and the second connecting arm 62'b do not need to fully bear the flexible elasticity when the movable part moves, so the first connecting arm 62'a and the second connecting arm 62'b can be appropriately thickened in design to disperse the stress , so that the elastic piece 6' is not easily deformed and damaged.

Please refer to Fig. 11 again, which is the third embodiment of the present utility model, which is different from the above-mentioned first embodiment in that: the first connecting arm 62a and the second connecting arm 62b are each punched with a punching hole 64 during the stamping process , so that the original number of one first connecting arm 62 a and second connecting arm 62 b is further transformed into two first connecting arms 62 a and second connecting arm 62 b due to the design of the punching hole 64 .

Please refer to Fig. 12 again, which is the fourth embodiment of the present utility model, which is different from the above-mentioned embodiments in that it can directly align the first positioning part 611" of the elastic piece 6" with an oblique angle during the punching process. The second positioning portion 631" is cut off, so that in the present embodiment, the outer frame sheet and the inner frame sheet of the elastic piece 6" are transformed into two, each having a first outer frame with a relative shape and a space adjacent to each other. Sheet 61 "a and a first inner frame sheet 63 "a, and a second outer frame sheet 61 "b and a second inner frame sheet 63 "b, the first connecting arm 62 "a is formed from the first outer frame sheet The inner wall of 61 "a extends and connects the first inner frame sheet 63 "a, and the second connecting arm 62 "b extends from the inner wall of the second outer frame sheet 61 "b to connect the second inner frame sheet 63 "b, and the second connecting arm 62 "b An outer frame sheet 61 "a and a second outer frame sheet 61 "b are all formed with the first positioning portion 611 ", and the first inner frame sheet 63 "a and the second inner frame sheet 63 "b are all formed with The second positioning portion 631" thus has the same structure and purpose as above.

In the present utility model, the quantity of the shrapnel parts can be set as required, and has the following methods:

(1) one of the elastic piece 6, the elastic piece 6', and the elastic piece 6" of the four embodiments can be selected to be positioned on the moving part and the fixed part.

(2) Please refer to Fig. 13, two elastic pieces can be further provided, and the two elastic pieces 6 and two elastic pieces 6' of the first embodiment and the second embodiment can be selected to become a first elastic piece and a first elastic piece. The second elastic piece is positioned on the movable piece and the fixed piece with spaced contact, and the setting position has been described in the above description, so it will not be repeated here, and it is not limited to this, and it can also be selected from Combination of four examples.

(3) Please refer to Fig. 14, it can be the same as the description of item (2), but the first positioning part 611, the first positioning part 611' and the second positioning part 631 of the two elastic pieces 6 and two elastic pieces 6' 1. The second positioning part 631' adopts a mutual spaced and staggered configuration, that is, the first positioning part 611 of the first elastic piece is fixed on two relative positions of the fixing seat 3, and the first positioning part 611 of the second elastic piece is 'Fixed at two-phase positions that are equidistant and staggered from the fixed position of the first elastic piece, a staggered arrangement of mutual intervals can be achieved, and this arrangement can help to suppress the tilting and shaking of the moving part when it is actuated.

Through the above description, the elastic piece of the utility model is formed with two first positioning parts and two second positioning parts' in a symmetrical manner on the inner and outer frame pieces, and they are positioned in the same linear direction in contact with the moving part and the On the fixed part, in this way, the slight rotation of the lens assembly of the moving part can be reduced, so as to improve and reduce the problem of damage to the shrapnel due to collision.

Secondly, the utility model constitutes the elastic piece through the outer frame piece, the inner frame piece, and the first connecting arm and the second connecting arm extending in a sheet shape. The difficulty and cost of mold development and design, and the effect of improving the yield of finished products.

Furthermore, the shrapnel parts of the utility model can be made after blanking and punching, and can be arranged on the moving parts and the fixed parts. Compared with the prior art, the utility model reduces the unnecessary cutting Action to have the function of reducing cost man-hours.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present utility model.

Claims (14)

1. A lens actuator, characterized in that, comprising: a fixing piece; a movable member incorporated in the fixed member movable relative to the fixed member; and At least one elastic piece has at least one outer frame piece, at least one inner frame piece adjacent to the outer frame piece, and a first connecting arm extending in sheet shape from the inner wall of the outer frame piece to connect the inner frame piece and the second connecting arm, two symmetrically arranged first positioning portions are formed on the outer frame sheet, and two symmetrically arranged second positioning portions are formed on the inner frame sheet, and the second positioning portion of the inner frame sheet is opposite to the For the first positioning part of the outer frame, the first positioning part and the second positioning part are located in the same linear direction, the first connecting arm and the second connecting arm are arranged oppositely, and are arranged alternately and equidistantly from the first positioning part , the first positioning portion of the outer frame piece is in contact with the fixed piece, and the second positioning portion of the inner frame piece is in contact with the moving piece; Wherein, the moving part moves relative to the fixing part, the second positioning part of the inner frame moves away from the fixing part, and the second positioning part exerts an elastic restoring force on the moving part. 2. The lens actuating device as claimed in claim 1, wherein the fixed part has a fixed seat, and the moving part has a lens assembly movably disposed on the fixed seat. 3 . The lens actuating device as claimed in claim 2 , wherein the fixing part further has at least one magnetic component assembled on the fixing seat, and the moving part further has a coil component assembled on the lens component. 4 . 4. The lens actuating device as claimed in claim 2, wherein the fixing part further has a coil component assembled on the fixing seat, and the moving part further has at least one magnetic component assembled on the lens component. 5. The lens actuating device according to claim 3 or 4, wherein the magnetic component comprises a first magnet, a magnetically permeable material and a second magnet, and the first magnet and the second magnet are The same magnetic poles are oppositely combined on two sides of the magnetically permeable material piece. 6 . The lens actuating device according to claim 2 , wherein the first positioning portion of the elastic member is formed from opposite ends of the outer frame or extending from an outer wall of the outer frame. 7 . 7. The lens actuator as claimed in claim 2, wherein the outer frame piece and the inner frame piece of the elastic piece are each a frame piece surrounding a hollow closed body. 8. The lens actuating device according to claim 2, characterized in that, the outer frame piece and the inner frame piece of the elastic piece are each set to two, and there is a first outer frame piece with a relative shape and a space adjacent to each other. and a first inner frame piece, and a second outer frame piece and a second inner frame piece, the first connecting arm extends from the inner wall of the first outer frame piece to connect the first inner frame piece, the second The connecting arm extends from the inner wall of the second outer frame to connect the second inner frame, and the first positioning portion is formed on the first outer frame and the second outer frame, and the first inner frame Both the frame piece and the second inner frame piece are formed with the second positioning portion. 9. The lens actuating device according to claim 2, wherein the fixing base has a base, a through hole penetrating the base, and two protrusions extending from obliquely opposite side ends of the base, The lens assembly corresponds to the through hole. 10. The lens actuating device according to claim 9, wherein the first positioning portion of the elastic piece is in contact with the corresponding convex portion of the fixing seat, and the second positioning portion of the elastic piece is in contact with the lens the top of the component. 11 . The lens actuating device as claimed in claim 9 , wherein the first positioning portion of the elastic piece is in contact with the bottom of the base, and the second positioning portion of the elastic piece is in contact with the bottom of the lens assembly. 12. The lens actuating device according to claim 2, characterized in that two elastic pieces are provided, the two elastic pieces are a first elastic piece and a second elastic piece, and are spaced apart from each other and contact the fixing seat and the lens assembly. 13. The lens actuating device according to claim 12, wherein the first positioning portion of the first elastic piece is fixed at two opposite positions of the fixing base, and the first positioning portion of the second elastic piece is fixed at two opposite positions of the fixing base. The first elastic piece is fixed in two relative positions that are equidistant and staggered. 14. The lens actuating device according to claim 12, wherein the outer frame piece and the inner frame piece of the first elastic piece are respectively a polygonal frame, and the outer frame piece and the inner frame piece of the second elastic piece are The frame pieces are ring-shaped frames respectively.

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