CN114518635A

CN114518635A - Lens driving device, camera device and electronic apparatus

Info

Publication number: CN114518635A
Application number: CN202111307232.8A
Authority: CN
Inventors: 李朝阳; 余林涛; 曹宏; 张友
Original assignee: Ruien Photoelectric Co ltd
Current assignee: Ruien Photoelectric Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-05-20

Abstract

The present disclosure provides a lens driving device including: the vibration control device comprises a first anti-shake base, a second anti-shake base, a first driving part, a first ball part and a second ball part; the second anti-shake base is arranged in the first anti-shake base; the first driving part is arranged to the first side of the first anti-shake base and used for driving the second anti-shake base, and the driving direction of the first driving part is the first direction; the first ball part is arranged between the second side of the first anti-shake base and the second anti-shake base, the second ball part is arranged between the first anti-shake base and the second anti-shake base and is spaced apart from the first ball part, the first ball part and the second ball part are used for guiding the second anti-shake base to move in the first direction relative to the first anti-shake base, and the first side and the second side of the first anti-shake base are arranged oppositely. The present disclosure also provides a camera device and an electronic apparatus.

Description

Lens driving device, camera device and electronic apparatus

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a lens driving device, a camera device, and an electronic apparatus.

Background

At present, most camera devices of mobile electronic products such as digital cameras, smart phones, or tablet computers have an Auto Focusing (AF) function. In addition, with the development of high precision and high magnification of cameras, Optical Image Stabilization (OIS) is also required when photographing or imaging using a smartphone or the like.

Conventionally, in a lens driving device of a camera device, optical anti-shake in an X-axis direction and a Y-axis direction of the camera device is generally realized by a combined action of a SIDM piezoelectric driving device and a plurality of ball holding mechanisms.

However, the inventors have found that in the lens driving device having the above structure, the balls in the ball holding mechanism receive a large movement resistance, the following property is poor, and when the lens moves in the X-axis direction or the Y-axis direction, a tilt may occur, which may cause a position detection error in the moving direction, and the optical anti-shake cannot be stably controlled.

Disclosure of Invention

In order to solve one of the above-described technical problems, the present disclosure provides a lens driving device, a camera device, and an electronic apparatus.

According to an aspect of the present disclosure, a lens driving apparatus includes: the vibration control device comprises a first anti-shake base, a second anti-shake base, a first driving part, a first ball part and a second ball part; wherein,

the second anti-shake base is arranged in the first anti-shake base;

the first driving part is arranged to the first side of the first anti-shake base and used for driving the second anti-shake base, and the driving direction of the first driving part is a first direction;

the first ball part is arranged between the second side of the first anti-shake base and the second anti-shake base, the second ball part is arranged between the first anti-shake base and the second anti-shake base and is spaced apart from the first ball part, the first ball part and the second ball part are used for guiding the second anti-shake base to move in the first direction relative to the first anti-shake base, and the first side and the second side of the first anti-shake base are arranged oppositely;

the first ball part includes first and second balls, the second ball part includes a third ball, and on a movement plane of the first and second ball parts, movement directions of two balls among the first, second and third balls are constrained by the first and second anti-shake bases, and movement directions of the other ball are not constrained by the first and second anti-shake bases.

According to at least one embodiment of the present disclosure, the moving direction of the second ball and the moving direction of the third ball are constrained by the first anti-shake base and the second anti-shake base, and the moving direction of the first ball is not constrained by the second anti-shake base and the first anti-shake base.

According to at least one embodiment of the present disclosure, the first anti-shake base is provided with a first accommodating portion and a second accommodating portion, the second anti-shake base is correspondingly provided with a third accommodating portion and a fourth accommodating portion, the first anti-shake base is provided with a fifth accommodating portion, the second anti-shake base is correspondingly provided with a sixth accommodating portion, the first ball is accommodated in the first accommodating portion and the third accommodating portion, the second ball is accommodated in the second accommodating portion and the fourth accommodating portion, and the third ball is accommodated in the fifth accommodating portion and the sixth accommodating portion.

According to at least one embodiment of the present disclosure, the first accommodating portion, the second accommodating portion, and the fifth accommodating portion are each a V-shaped groove, the third accommodating portion is a cylindrical recess or an angular cylindrical recess, and the fourth accommodating portion and the sixth accommodating portion are conical recesses; the first ball is in conical surface contact with two surfaces or three surfaces of the first accommodating part, and is in one surface contact with the third accommodating part, and the second ball is in conical surface contact with two surfaces or three surfaces of the second accommodating part and is in conical surface contact with the fourth accommodating part; the third ball and the fifth accommodating part are in conical surface contact with each other on two sides or three sides, and the sixth accommodating part is in conical surface contact with each other.

According to at least one embodiment of the present disclosure, further comprising: the lens support part, the automatic focusing base, the second driving part, the third ball part and the fourth ball part;

the lens support part is used for supporting at least one lens; the lens supporting part is arranged to the inner part of the automatic focusing base; the automatic focusing base is arranged inside the second anti-shaking base;

the second driving part is arranged to the first side of the second anti-shake base and used for driving the automatic focusing base, and the driving direction of the second driving part is a second direction;

the third ball part is arranged between the second side of the second anti-shake base and the automatic focusing base, the fourth ball part is arranged between the second anti-shake base and the automatic focusing base and is spaced from the third ball part, the third ball part and the fourth ball part are used for guiding the automatic focusing base to move in the second direction relative to the second anti-shake base, and the first side and the second side of the second anti-shake base are arranged oppositely;

the third ball part includes a fourth ball and a fifth ball, the fourth ball part includes a sixth ball, and on the movement plane of the third ball part and the fourth ball part, the moving direction of two balls of the fourth ball, the fifth ball and the sixth ball is constrained by the auto-focusing base and the second anti-shake base, and the moving direction of the other ball is not constrained by the auto-focusing base and the second anti-shake base.

According to at least one embodiment of the present disclosure, the moving direction of the fifth ball and the moving direction of the sixth ball are constrained by the auto-focusing base and the second anti-shake base, and the moving direction of the fourth ball is not constrained by the auto-focusing base and the first anti-shake base.

According to at least one embodiment of the present disclosure, the second anti-shake base is provided with a seventh accommodation portion and an eighth accommodation portion, the auto-focus base is provided with a ninth accommodation portion and a tenth accommodation portion, the second anti-shake base is provided with an eleventh accommodation portion, the auto-focus base is provided with a twelfth accommodation portion, and the fourth ball is accommodated in the seventh accommodation portion and the ninth accommodation portion, the fifth ball is accommodated in the eighth accommodation portion and the tenth accommodation portion, and the sixth ball is accommodated in the eleventh accommodation portion and the twelfth accommodation portion.

According to at least one embodiment of the present disclosure, the seventh accommodating portion, the eighth accommodating portion and the eleventh accommodating portion are both V-shaped grooves, the ninth accommodating portion is a cylindrical recess or an angular cylindrical recess, and the tenth accommodating portion and the twelfth accommodating portion are conical recesses; the fourth ball is in conical surface contact with two surfaces or three surfaces of the seventh accommodating part and in one surface contact with the ninth accommodating part, and the fifth ball is in conical surface contact with two surfaces or three surfaces of the eighth accommodating part and in conical surface contact with the tenth accommodating part; the sixth ball makes tapered surface contact with the eleventh accommodating part on both sides or on both sides and the twelfth accommodating part on a tapered surface.

According to another aspect of the present disclosure, the camera apparatus includes: the lens driving device of any one of the above, and a lens; the lens driving device can drive the lens to move, and the focusing of the camera device is realized.

According to still another aspect of the present disclosure, the electronic device includes the camera apparatus described above.

The present disclosure provides a lens driving apparatus, a camera apparatus, and an electronic device, in which a first ball part includes a first ball and a second ball, a second ball part includes a third ball, and the first ball is not limited by a first anti-shake base and a second anti-shake base, the second ball is limited by the second anti-shake base and not limited by the first anti-shake base, and the third ball is limited by the first anti-shake base and the second anti-shake base on a movement plane of the first ball part and the second ball part, so that, in a process in which the first ball part and the second ball part guide the second anti-shake base to move in a first direction with respect to the first anti-shake base, movement resistances received by the first ball, the second ball, and the third ball are all different, and movement resistances received by the first ball and the second ball are all smaller than that received by a ball in the related art, the follow-up property is good, and the optical anti-shake function is favorably realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of a lens driving apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along the line C-C of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along the direction D-D of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along direction E-E of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along the direction F-F of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 8 is a cross-sectional view taken along the line G-G of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 5 in accordance with an embodiment of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 6 in accordance with an embodiment of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 8 in accordance with an embodiment of the present invention;

FIG. 12 is a partial schematic view of FIG. 1 according to an embodiment of the present invention;

FIG. 13 is a cross-sectional view taken along the direction H-H of FIG. 12 according to an embodiment of the present invention;

FIG. 14 is a cross-sectional view taken along the line J-J of FIG. 12 in accordance with an embodiment of the present invention;

FIG. 15 is a cross-sectional view taken along the line K-K of FIG. 12 according to an embodiment of the present invention;

FIG. 16 is a cross-sectional view taken along the line L-L of FIG. 12 in accordance with an embodiment of the present invention;

FIG. 17 is a cross-sectional view taken along the line M-M of FIG. 12 according to an embodiment of the present invention;

FIG. 18 is an enlarged partial view of FIG. 14 provided in accordance with an embodiment of the present invention;

FIG. 19 is an enlarged partial view of FIG. 15 provided in accordance with an embodiment of the present invention;

FIG. 20 is an enlarged partial view of FIG. 16 provided in accordance with an embodiment of the present invention;

fig. 21 is a first structural view of a first piezoelectric driving unit according to an embodiment of the present invention;

fig. 22 is a first diagram showing a positional relationship among the first piezoelectric element, the first fixing mechanism, and the first driving shaft according to the embodiment of the present invention;

fig. 23 is a second positional relationship diagram of the first piezoelectric element, the first fixing mechanism, and the first driving shaft according to the embodiment of the present invention;

FIG. 24 is a first schematic structural diagram of a first protection mechanism according to an embodiment of the present invention;

FIG. 25 is a second structural diagram of the first protection mechanism according to the embodiment of the present invention;

fig. 26 is a third schematic structural diagram of the first protection mechanism according to the embodiment of the present invention;

fig. 27 is a fourth schematic structural diagram of the first protection mechanism according to the embodiment of the present invention;

fig. 28 is a fifth schematic structural diagram of the first protection mechanism according to the embodiment of the present invention;

fig. 29 is a sixth schematic structural view of the first protection mechanism according to the embodiment of the present invention;

fig. 30 is a second structural view of the first piezoelectric driving unit according to the embodiment of the present invention;

fig. 31 is a third structural view of the first piezoelectric driving unit according to the embodiment of the present invention;

fig. 32 is a fourth structural view of the first piezoelectric driving unit according to the embodiment of the present invention.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "sidewall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Moreover, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

It should be noted that, unless conflicting, the technical features in the embodiments of the present invention may be combined with each other.

Specifically, as shown in fig. 1 to 8, fig. 1 is a schematic structural diagram of a lens driving apparatus according to an embodiment of the present invention, and fig. 2 to 8 are sectional views taken along a direction a-A, B-B, C-C, D-D, E-E, F-F and a direction G-G of fig. 1 according to an embodiment of the present invention, respectively, the lens driving apparatus includes: the vibration damping device includes a first anti-shake base 100, a second anti-shake base 200, a first piezoelectric driving part 300, a first ball part 400, and a second ball part 500.

The second anti-shake base 200 is disposed into the first anti-shake base 100; the first piezoelectric driving part 300 is disposed to a first side of the first anti-shake base 100, and is used for driving the second anti-shake base 200 under the action of an external voltage, and the driving direction of the first piezoelectric driving part 300 is a first direction X; the first ball part 400 is disposed between the first side of the first anti-shake base 100 and the second anti-shake base 200, the second ball part 500 is disposed between the second side of the first anti-shake base 100 and the second anti-shake base 200, the first ball part 400 and the second ball part 500 are used to guide the second anti-shake base 200 to move in the first direction X with respect to the first anti-shake base 100, and the first side and the second side of the first anti-shake base 100 are disposed opposite to each other; the first ball part 400 includes first balls 410 and second balls 420, the second ball part 500 includes third balls 510, a moving direction of the first balls 410 is not limited by the first and second anti-shake bases 100 and 200, a moving direction of the second balls 420 is limited by the second and first anti-shake bases 200 and 100, and a moving direction of the third balls 510 is limited by the first and second anti-shake bases 100 and 200 on a moving plane of the first and second ball parts 400 and 500.

Therefore, in the process that the first ball part 400 and the second ball part 500 guide the second anti-shake base 200 to move in the first direction X relative to the first anti-shake base 100, the moving resistances of the first ball 410, the second ball 420 and the third ball 510 are all different, the moving resistances of the first ball 410 and the second ball 420 are all smaller than the moving resistance of the balls in the prior art, the following performance is good, and the optical anti-shake function is favorably realized.

Moreover, the first ball 410 and the second ball 420 are located at opposite sides of the first piezoelectric driving part 300, the third ball 510 is located at the same side of the first piezoelectric driving part 300, the moving resistance of the first ball 410 and the moving resistance of the second ball 420 are both smaller than the moving resistance of the balls in the prior art, the moving resistance of the third ball 510 is the same as the moving resistance of the balls in the prior art, the degree of movement of both sides of the second anti-shake base 200 can be ensured to be consistent, and the optical anti-shake effect can be further improved.

In the embodiment of the present invention, the structures of the first anti-shake base 100 and the second anti-shake base 200 can be reasonably designed, so that the first balls 410 are not limited by the first anti-shake base 100 and the second anti-shake base 200, the second balls 420 are limited by the second anti-shake base 200 and not limited by the first anti-shake base 100, and the third balls 510 are limited by the first anti-shake base 100 and the second anti-shake base 200 on the movement planes of the first ball part 400 and the second ball part 500.

Exemplarily, as shown in fig. 9 to 11, fig. 9 to 11 are partially enlarged views of fig. 5, fig. 6 and fig. 8 provided in an embodiment of the present invention, in which a first accommodating portion 110 and a second accommodating portion 120 are disposed on a first side of a first anti-shake base 100, and a third accommodating portion 210 and a fourth accommodating portion 220 are correspondingly disposed on a second anti-shake base 200; the second side of the first anti-shake base 100 is provided with a fifth receiving portion 130, and the second anti-shake base 200 is correspondingly provided with a sixth receiving portion 230.

The first accommodating part 110, the second accommodating part 120, and the fifth accommodating part 130 are all V-shaped grooves (the V-shape is an approximate description of the shapes of the first accommodating part 110, the second accommodating part 120, and the fifth accommodating part 130, and actually as shown in fig. 9 to 11, the groove bottoms of the V-shaped grooves have small-sized planar portions), the third accommodating part 210 is a cylindrical or angular cylindrical recess, and the fourth accommodating part 220 and the sixth accommodating part 230 are conical recesses; the first ball 410 is in contact with the side wall of the first receiving portion 110 and the groove bottom of the third receiving portion 210, and the second ball 420 is in contact with the groove bottom of the second receiving portion 120 and the side wall of the fourth receiving portion 220; the third ball 510 contacts with the sidewalls of the fifth receiving part 130 and the sixth receiving part 230.

As shown in fig. 1, the second anti-shake base 200 has an extension portion on which the third, fourth and sixth receiving

parts

210, 220 and 230 may be located.

Wherein the first ball 410 is not in contact with the side wall of the third receiving portion 210 (i.e., the size of the cross section of the third receiving portion 210 is larger than the diameter of the first ball 410) on the moving plane of the first ball portion 400 and the second ball portion 500, the first ball 410 is not limited by the first receiving portion 110 and the third receiving portion 210, and the side wall of the first receiving portion 110 and the groove bottom of the third receiving portion 210 limit the first ball 410 in the optical axis direction of the lens; on the movement planes of the first ball part 400 and the second ball part 500, the second ball 420 does not contact with the sidewall of the second receiving part 120 (i.e., the size of the cross section of the second receiving part 120 is larger than the diameter of the second ball 420), contacts with the sidewall of the fourth receiving part 220, and is restricted by the sidewall of the fourth receiving part 220, and the second ball 420 is restricted by the groove bottom of the second receiving part 120 and the sidewall of the fourth receiving part 220 in the optical axis direction of the lens; in the movement plane of the first and second ball parts 400 and 500, the third ball 510 is in contact with the side walls of the fifth and sixth receiving parts 130 and 230, doubly restricted by the fifth and sixth receiving parts 130 and 230, and doubly restricted by the fifth and sixth receiving parts 130 and 230 in the optical axis direction of the lens.

Alternatively, as shown in fig. 1 and fig. 12 to 17, fig. 12 is a partial schematic view of fig. 1 provided in the embodiment of the present invention, and fig. 13 to 17 are sectional views of fig. 12 taken along the directions H-H, J-J, K-K, L-L and M-M, respectively, provided in the embodiment of the present invention, the lens driving apparatus further includes: a lens support part 600, an auto-focus mount 700, a second piezoelectric driving part 800, a third ball part 900, and a fourth ball part 1000.

The lens support 600 is for supporting at least one lens; the lens support 600 is disposed into the auto-focusing base 700; the auto-focusing base 700 is provided into the second anti-shake base 200.

The second piezoelectric driving part 800 is disposed on the second anti-shake base 200, and is configured to drive the auto-focusing base 700 under the action of an external voltage, and a driving direction of the second piezoelectric driving part 800 is a second direction Y.

The third ball portion 900 is disposed between the first side of the second anti-shake base 200 and the auto-focusing base 700, the fourth ball portion 1000 is disposed between the second side of the second anti-shake base 200 and the auto-focusing base 700, the third ball portion 900 and the fourth ball portion 1000 are used to guide the auto-focusing base 700 to move in the second direction Y with respect to the second anti-shake base 200, and the first side and the second side of the second anti-shake base 200 are disposed opposite to each other.

The third ball part 900 includes a fourth ball 910 and a fifth ball 920, the fourth ball part 1000 includes a sixth ball 1010, a moving direction of the fourth ball 910 is not limited by the second anti-shake base 200 and the auto-focus base 700, a moving direction of the fifth ball 920 is limited by the second anti-shake base 200 and the auto-focus base 700, and a moving direction of the sixth ball 1010 is limited by the auto-focus base 700 and the second anti-shake base 200 on a moving plane of the third ball part 900 and the fourth ball part 1000.

In the embodiment of the present invention, the structures of the second anti-shake base 200 and the automatic focusing base 700 may be designed reasonably, so that the fourth ball 910 is not limited by the second anti-shake base 200 and the automatic focusing base 700, the fifth ball 920 is limited by the second anti-shake base 200 and the automatic focusing base 700, and the sixth ball 1010 is limited by the automatic focusing base 700 and is not limited by the second anti-shake base 200 on the movement plane of the third ball 900 and the fourth ball 1000.

Exemplarily, as shown in fig. 18 to 20, fig. 18 to 20 are partial enlarged views of fig. 14, 15 and 16 provided by an embodiment of the present invention, respectively, in which a seventh accommodating portion 240 and an eighth accommodating portion 250 are provided on a first side of the second anti-shake base 200, and a ninth accommodating portion 710 and a tenth accommodating portion 720 are correspondingly provided on the auto-focusing base 700; an eleventh accommodating part 260 is disposed on the second side of the second anti-shake base 200, and a twelfth accommodating part 730 is correspondingly disposed on the automatic focusing base 700;

the seventh accommodating section 240, the eighth accommodating section 250, and the eleventh accommodating section 260 are each a V-shaped groove (the V-shape is an approximate description of the shape of the seventh accommodating section 240, the eighth accommodating section 250, and the eleventh accommodating section 260, and actually as shown in fig. 9 to 11, the groove bottom of the V-shaped groove has a small-sized flat portion), the ninth accommodating section 710 is a cylindrical or horn-cylindrical recess, and the tenth accommodating section 720 and the twelfth accommodating section 730 are conical recesses; the fourth ball 910 contacts with the side wall of the seventh receiving part 240 and the groove bottom of the ninth receiving part 710, and the fifth ball 920 contacts with the side wall of the eighth receiving part 250 and the side wall of the tenth receiving part 720; the sixth ball 1010 contacts the groove bottom of the eleventh receiving part 260 and the sidewall of the twelfth receiving part 730.

As shown in fig. 1 and 12, the auto-focusing base 700 has an extended portion on which the ninth container 710, the tenth container 720 and the twelfth container 730 may be located.

Wherein, on the moving plane of the third ball part 900 and the fourth ball part 1000, the fourth ball 910 is not in contact with the side wall of the seventh accommodating part 240 (i.e. the size of the cross section of the seventh accommodating part 240 is larger than the diameter of the fourth ball 910), the fourth ball 910 is not limited by the seventh accommodating part 240 and the ninth accommodating part 710, and the side wall of the seventh accommodating part 240 and the groove bottom of the ninth accommodating part 710 limit the fourth ball 910 in the optical axis direction of the lens; in the movement planes of the third and fourth ball portions 900 and 1000, the fifth ball 920 is in contact with the sidewalls of the eighth and tenth receiving portions 250 and 720, doubly restricted by the eighth and tenth receiving portions 250 and 720, and doubly restricted by the eighth and tenth receiving portions 250 and 720 in the optical axis direction of the lens; in the movement planes of the third ball section 900 and the fourth ball section 1000, the sixth ball 1010 is not in contact with the side wall of the eleventh receiving section 260 (i.e., the size of the cross section of the eleventh receiving section 260 is larger than the diameter of the sixth ball 1010), is in contact with the side wall of the twelfth receiving section 730, is restricted by the side wall of the twelfth receiving section 730, and the groove bottom of the eleventh receiving section 260 and the side wall of the twelfth receiving section 730 restrict the sixth ball 1010 in the optical axis direction of the lens.

In the lens driving device having the above structure, when the third ball part 900 and the fourth ball part 1000 guide the auto-focusing base 700 to move in the second direction Y relative to the second anti-shake base 200, the fourth ball 910 and the sixth ball 1010 receive a small moving resistance, so that the following performance is good, which is beneficial to better realizing the optical anti-shake function.

Alternatively, as shown in fig. 21, 22 and 23, fig. 21 is a first structural diagram of a first piezoelectric driving portion according to an embodiment of the present invention, fig. 22 is a first positional relationship diagram of a first piezoelectric element, a first fixing mechanism and a first driving shaft according to an embodiment of the present invention, fig. 23 is a second positional relationship diagram of a first piezoelectric element, a first fixing mechanism and a first driving shaft according to an embodiment of the present invention, and the first piezoelectric driving portion 300 includes a first piezoelectric element 310, a first fixing mechanism 320, a first driving shaft 330 and a first protection mechanism 340.

The first piezoelectric element 310 is adapted to expand or contract in a first direction X under the action of an external voltage. A first end of the first piezoelectric element 310 is fixedly connected with a first fixing mechanism 320, and the first fixing mechanism 320 is used for fixing the first piezoelectric element 310; the second end of the first piezoelectric element 310 is connected to the first end of the first driving shaft 330, and the axial direction of the first driving shaft 330 is the same as the first direction X; the first protection mechanism 340 is connected to the first driving shaft 330 and the first fixing mechanism 320, and is configured to provide at least one direction of support protection for the first driving shaft 330 and the first fixing mechanism 320 when the first piezoelectric driving unit 300 is subjected to an external force.

In the using process of the first piezoelectric driving part 300, under the action of an external voltage, the first piezoelectric element 310 extends or contracts along the first direction X, so as to drive the first driving shaft 330 to move along the axial direction thereof, and the second anti-shake base 200 in friction contact with the first driving shaft 330 is driven by the movement of the first driving shaft 330.

When the first piezoelectric driving part 300 is subjected to an external force, the first protection mechanism 340 connected to the first driving shaft 330 and the first fixing mechanism 320 may provide support protection for the first driving shaft 330 and the first fixing mechanism 320 from at least one direction, so that a joint between the first piezoelectric element 310 and the first fixing mechanism 320, a joint between the first piezoelectric element 310 and the first driving shaft 330, the first piezoelectric element 310 itself, and the like may be effectively prevented from being damaged, and a risk of damage to the first piezoelectric driving part 300 may be reduced.

Alternatively, the first piezoelectric element 310 provided in the embodiment of the present invention is a stacked piezoelectric element, and the stacking direction thereof coincides with the first direction X.

Optionally, the first fixing mechanism 320 provided in the embodiment of the present invention is a weight. The first securing mechanism 320 may be any alternative shape, and in embodiments of the present invention the shape of the first securing mechanism 320 is selected to be cylindrical. Alternatively, as shown in fig. 21 and fig. 24 to 29, fig. 24 to 29 are schematic structural diagrams of a first protection mechanism provided in an embodiment of the present invention, i.e., a first protection mechanism 340 includes a first fixing mechanism supporting portion 341, a first driving shaft supporting portion 342, a second driving shaft supporting portion 343, and a first supporting arm 344; the first fixing mechanism supporting part 341, the first driving shaft supporting part 342, and the second driving shaft supporting part 343 are fixed to one side of the first support arm 344; the first fixing mechanism supporting part 341 is fixedly connected to the first fixing mechanism 320, and the first driving shaft supporting part 342 and the second driving shaft supporting part 343 are movably connected to the first driving shaft 330. The first fixing mechanism supporting portion 341 and the first fixing mechanism 320 may be fixed by bonding. A specific manner of movably coupling the first and second drive

shaft supporting parts

342 and 343 to the first drive shaft 330 may be: the first and second drive

shaft supporting parts

342 and 343 are in direct contact with the first drive shaft 330, and the first drive shaft 330 is axially displaceable relative to the first and second drive

shaft supporting parts

342 and 343. The first fixing mechanism supporting portion 341, the first driving shaft supporting portion 342, the second driving shaft supporting portion 343, and the first supporting arm 344 included in the first protection mechanism 340 may be integrally formed, so that the first protection mechanism 340 has a better strength.

In the first protection mechanism 340 having the above-described structure, the first fixing mechanism supporting part 341 may provide effective support for the first fixing mechanism 320 from at least one direction to prevent the first fixing mechanism 320 from moving in the direction, and the first driving shaft supporting part 342 and the second driving shaft supporting part 343 may each provide effective support for the first driving shaft 330 from at least one direction to prevent the first driving shaft 330 from moving in the direction, and thus, the mutual movement between the first piezoelectric element 310 and the first fixing mechanism 320, between the first piezoelectric element 310 and the first driving shaft 330, and/or, the inside of the first piezoelectric element 310, thereby effectively reducing or avoiding damage to the joint between the first piezoelectric element 310 and the first fixing mechanism 320, the joint between the first piezoelectric element 310 and the first driving shaft 330, and the first piezoelectric element 310 itself.

Alternatively, as shown in fig. 21 and 30, fig. 30 is a second structural view of the first piezoelectric driving part provided in the embodiment of the present invention, and a second driving shaft supporting part 343 corresponds to a second end of the first driving shaft 330; the first driving shaft supporting part 342 corresponds to the middle portion of the first driving shaft 330, and the distance between the first driving shaft supporting part 342 and the second driving shaft supporting part 343 is the same as or close to the distance between the first driving shaft supporting part 342 and the first fixing mechanism supporting part 341. Based on this, the first protection mechanism 340 provides a good protection effect for the entire first piezoelectric driving unit 300.

Among them, the first fixing mechanism support 341, the first driving shaft support 342, and the second driving shaft support 343 may support the first fixing mechanism 320 and the first driving shaft 330 by any possible structures.

Exemplarily, as shown in fig. 27 and 28, the first drive shaft supporting part 342 is provided with a thirteenth accommodating part 3421 penetrating therethrough, and an extending direction of the thirteenth accommodating part 3421 is the same as the first direction X; the second drive shaft supporting part 343 is provided with a fourteenth accommodating part 3431 penetrating therethrough, and the extending direction of the fourteenth accommodating part 3431 is the same as the first direction X; the thirteenth accommodating part 3421 and the fourteenth accommodating part 3431 are each quarter-circular in cross section, having the same radius as the first drive shaft 330. The thirteenth accommodating part 3421 and the fourteenth accommodating part 3431, which are in the shape of a quarter circle, may protect the first driving shaft 330 well, and at the same time, they may not form a large friction force with the first driving shaft 330, and may not affect the driving effect of the first driving shaft 330 on the second anti-shake base 200.

In which, the orientations of the openings of the thirteenth accommodating part 3421 and the fourteenth accommodating part 3431 may be selected according to actual needs in the embodiment of the present invention, and exemplarily, the orientations of the openings of the thirteenth accommodating part 3421 and the fourteenth accommodating part 3431 are the same.

As shown in fig. 21, 27 and 28, the first fixing mechanism 320 is cylindrical, a fifteenth receiving portion 3411 is disposed on the first fixing mechanism supporting portion 341, a cross section of the fifteenth receiving portion 3411 is semicircular, a radius of the semicircle is the same as a radius of the first fixing mechanism 320, and a length of the fifteenth receiving portion 3411 is equal to a height of the first fixing mechanism 320.

In addition, as shown in fig. 21, 31 and 32, fig. 31 is a third structural view of the first piezoelectric driving unit according to the embodiment of the present invention, fig. 32 is a fourth structural view of the first piezoelectric driving unit according to the embodiment of the present invention, the first piezoelectric driving unit 300 according to the embodiment of the present invention further includes a first friction part 350 and a first adjusting part 360, the first friction part 350 and the first driving shaft 330 form a friction contact, the first friction part 350 is used for connecting the second anti-shake base 200, the second anti-shake base 200 is driven to move by a friction force between the first driving shaft 330 and the first friction part 350, and the first adjusting part 360 is used for applying a force to the first friction part 350 to adjust a magnitude of the friction force between the first friction part 350 and the first driving shaft 330.

Alternatively, in the embodiment of the present invention, the first friction part 350 is provided to the first drive shaft 330 between the first drive shaft support part 342 and the second drive shaft support part 343.

Illustratively, as shown in fig. 31 and 32, in the embodiment of the present invention, the first friction part 350 has a first receiving groove 351 for receiving the first driving shaft 330, a first threaded hole 352 and a first retaining groove 353, the first adjusting part 360 includes a first adjusting piece 361, a first spring 362, a first spacer 363 and a first adjusting screw 364, one end of the first adjusting piece 361 is retained in the first retaining groove 353, the other end of the first adjusting piece 361 is provided with a second threaded hole 3611, the first adjusting screw 364 passes through the first spacer 363, the first spring 362, the second threaded hole 3611 of the first adjusting piece 361 and the first threaded hole 352 of the first friction part 350 in sequence, and the adjustment of the friction force between the first friction part 350 and the first driving shaft 330 is achieved by adjusting the tightness of the first adjusting screw 364. In the embodiment of the present invention, the cross section of the first retaining groove 353 is selected to be trapezoidal.

Specifically, the second piezoelectric driving part 800 includes a second piezoelectric element, a second fixing mechanism, a second driving shaft, and a second protection mechanism; the second piezoelectric element is used for extending or contracting along the second direction Y under the action of external voltage; the first end of the second piezoelectric element is fixedly connected with a second fixing mechanism, and the second fixing mechanism is used for fixing the second piezoelectric element; the second end of the second piezoelectric element is connected with the first end of the second driving shaft, and the axial direction of the second driving shaft is the same as the second direction Y; the second protection mechanism is connected to the second driving shaft and the second fixing mechanism, and is configured to provide at least one direction of support protection for the second driving shaft and the second fixing mechanism when the second piezoelectric driving unit 800 is subjected to an external force.

In the use process of the second piezoelectric driving part 800, under the action of the external voltage, the second piezoelectric element extends or contracts along the second direction Y, so as to drive the second driving shaft to move along the axial direction thereof, and the auto-focusing base 700 in friction contact with the second driving shaft is driven by the movement of the second driving shaft.

When the second piezoelectric driving portion 800 is affected by an external force, the second protection mechanism connected to the second driving shaft and the second fixing mechanism may provide support protection for the second driving shaft and the second fixing mechanism from at least one direction, so that the joint between the second piezoelectric element and the second fixing mechanism, the joint between the second piezoelectric element and the second driving shaft, the second piezoelectric element itself, and the like may be effectively prevented from being damaged, and the risk of damage to the second piezoelectric driving portion 800 may be reduced.

The specific structures and dimensions of the second piezoelectric element, the second fixing mechanism, the second driving shaft, and the second protection mechanism included in the second piezoelectric driving unit 800 can be set with reference to the first piezoelectric driving unit 300, as long as attention is paid to the conversion of the directions thereof, and the details are not repeated here.

As shown in fig. 1 and 12, the lens driving apparatus according to the embodiment of the present invention further includes two hall elements 1200, one hall element 1200 is disposed at a middle position of the first side of the first anti-shake base 100 between the first ball 410 and the second ball 420, and the other hall element 1200 is disposed at a middle position of the first side of the second anti-shake base 200 between the fourth ball 910 and the fifth ball 920. The two hall elements 1200 are respectively used for detecting the moving direction and the moving distance of the lens, and assist in realizing the automatic focusing of the lens.

In addition, an embodiment of the present invention further provides a camera apparatus, including: the lens driving device of any one of the above, and a lens; the lens driving device can drive the lens to move, and the focusing of the camera device is realized.

The embodiment of the invention also provides electronic equipment which comprises the camera device.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may be made to those skilled in the art, based on the above disclosure, and still be within the scope of the present disclosure.

Claims

1. A lens driving device, comprising: the vibration control device comprises a first anti-shake base, a second anti-shake base, a first driving part, a first ball part and a second ball part; wherein,

the second anti-shake base is arranged in the first anti-shake base;

2. The lens driving device according to claim 1, wherein a moving direction of the second ball and a moving direction of the third ball are constrained by the first anti-shake base and the second anti-shake base, and a moving direction of the first ball is not constrained by the second anti-shake base and the first anti-shake base.

3. The lens driving device according to claim 1,

the first anti-shake base is provided with a first accommodating part and a second accommodating part, the second anti-shake base is correspondingly provided with a third accommodating part and a fourth accommodating part, the first anti-shake base is provided with a fifth accommodating part, the second anti-shake base is correspondingly provided with a sixth accommodating part, the first ball is accommodated in the first accommodating part and the third accommodating part, the second ball is accommodated in the second accommodating part and the fourth accommodating part, and the third ball is accommodated in the fifth accommodating part and the sixth accommodating part.

4. The lens driving device according to claim 3,

the first accommodating part, the second accommodating part and the fifth accommodating part are both V-shaped grooves, the third accommodating part is a cylindrical concave part or an angular cylindrical concave part, and the fourth accommodating part and the sixth accommodating part are conical concave parts; the first ball is in conical surface contact with two surfaces or three surfaces of the first accommodating part, and is in one surface contact with the third accommodating part, and the second ball is in conical surface contact with two surfaces or three surfaces of the second accommodating part and is in conical surface contact with the fourth accommodating part; the third ball and the fifth accommodating part are in conical surface contact with each other on two sides or three sides, and the sixth accommodating part is in conical surface contact with each other.

5. The lens driving device according to claim 1, further comprising: the lens support part, the automatic focusing base, the second driving part, the third ball part and the fourth ball part are arranged on the base;

6. The lens driving device according to claim 5,

the moving direction of the fifth ball and the moving direction of the sixth ball are constrained by the automatic focusing base and the second anti-shaking base, and the moving direction of the fourth ball is not constrained by the automatic focusing base and the first anti-shaking base.

7. The lens driving device according to claim 5,

the second anti-shake base is provided with a seventh accommodating portion and an eighth accommodating portion, the auto-focusing base is correspondingly provided with a ninth accommodating portion and a tenth accommodating portion, the second anti-shake base is provided with an eleventh accommodating portion, the auto-focusing base is correspondingly provided with a twelfth accommodating portion, the fourth ball is accommodated in the seventh accommodating portion and the ninth accommodating portion, the fifth ball is accommodated in the eighth accommodating portion and the tenth accommodating portion, and the sixth ball is accommodated in the eleventh accommodating portion and the twelfth accommodating portion.

8. The lens driving device according to claim 7,

the seventh accommodating portion, the eighth accommodating portion and the eleventh accommodating portion are both V-shaped grooves, the ninth accommodating portion is a cylindrical recess or a horn-cylindrical recess, and the tenth accommodating portion and the twelfth accommodating portion are conical recesses; the fourth ball makes conical surface contact with two surfaces or three surfaces of the seventh accommodating part and makes one surface contact with the ninth accommodating part, and the fifth ball makes conical surface contact with two surfaces or three surfaces of the eighth accommodating part and makes conical surface contact with the tenth accommodating part; the sixth ball makes tapered surface contact with the eleventh accommodating part on both sides or on both sides and the twelfth accommodating part on a tapered surface.

9. A camera apparatus, comprising:

the lens driving device according to any one of claims 1 to 8, and a lens; the lens driving device can drive the lens to move, and the focusing of the camera device is realized.

10. An electronic device characterized by comprising the camera apparatus of claim 9.