CN215340499U

CN215340499U - Lens driving mechanism

Info

Publication number: CN215340499U
Application number: CN202121318367.XU
Authority: CN
Inventors: 鲍和平; 彭坤; 林聪�; 刘富泉; 吕新科
Original assignee: Henan Hozel Electronics Co Ltd
Current assignee: Henan Hozel Electronics Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-12-28
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a lens driving mechanism, comprising: the device comprises a base, a carrier, a connecting assembly, a friction rod, a piezoelectric deformation piece and a counterweight piece, wherein the carrier is movably positioned on the base and used for mounting a lens; the connecting component is connected with the carrier; the peripheral surface of the friction rod is in friction fit with the connecting assembly, the friction rod is used for driving the carrier to move, and the friction rod extends along the direction parallel to the optical axis of the lens; the piezoelectric deformation piece is arranged on the upper end face of the friction rod and can be operably deformed along the axial direction of the friction rod to drive the friction rod to move; the counterweight piece is arranged on the upper end surface of the piezoelectric deformation piece. The piezoelectric deformation piece is operable to deform along the axis direction of the friction rod to drive the friction rod to move, the piezoelectric deformation piece drives the friction rod to move, and the friction rod and the connecting assembly drive the carrier to move along the axis of the friction rod, so that focusing of the lens is achieved.

Description

Lens driving mechanism

Technical Field

The embodiment of the utility model relates to the technical field of optical imaging equipment, in particular to a lens driving mechanism.

Background

With the development of technology, many electronic devices (such as smart phones or digital cameras) have a function of taking pictures or recording videos. Some electronic devices with a camera or video recording function are provided with a lens driving module to drive an optical component such as a lens to move, so as to achieve an auto focus (auto focus) function. The requirements for image quality are increasing, and the driving function of the lens module (optical element) is becoming more important.

SUMMERY OF THE UTILITY MODEL

An object of an embodiment of the present invention is to provide a lens driving mechanism that enables a lens to move for focusing.

To solve the above technical problem, an embodiment of the present invention provides a lens driving mechanism including:

a base;

the carrier is movably positioned on the base and is used for mounting a lens;

a connection assembly connected with the carrier;

the peripheral surface of the friction rod is in friction fit with the connecting assembly, the friction rod is used for driving the carrier to move, and the friction rod extends along the direction parallel to the optical axis of the lens;

the piezoelectric deformation piece is arranged on the upper end face of the friction rod and can be operably deformed along the axial direction of the friction rod to drive the friction rod to move; and

the weight piece is arranged on the upper end face of the piezoelectric deformation piece.

Compared with the prior art, the embodiment of the utility model has the advantages that the lens driving mechanism comprises: piezoelectricity deformation spare and friction stick, friction stick and coupling assembling friction fit, and piezoelectricity deformation spare sets up on the up end of friction stick, piezoelectricity deformation spare is operable to take place to deform along friction stick ground axis direction and rubs excellent motion with the drive, in addition, coupling assembling is connected with the carrier, consequently, drive the friction stick through piezoelectricity deformation spare and move, again through rubbing stick and coupling assembling drive carrier along the axis of rubbing stick move, because the friction stick extends along the optical axis direction of camera lens, also be exactly the optical axis direction motion that the camera lens can be followed to the carrier, thereby realize the focusing to the camera lens.

In one embodiment, the friction rod is arranged on one side of the carrier, a notch is formed in the position, opposite to the friction rod, of the outer peripheral surface of the carrier, and the notch penetrates through the carrier along the height direction of the carrier;

the connecting assembly encircles the peripheral surface of the friction rod, and at least one part of the part encircling the friction rod is clamped in the notch; preferably, the connecting assembly is clamped on the upper surface and the lower surface of the carrier relative to the outer peripheral surface of the carrier.

In an embodiment, the connecting assembly includes a first connecting member and a second connecting member, the first connecting member and the second connecting member surround the friction bar and are respectively in friction fit with the friction bar, and the first connecting member is located on the inner side of the second connecting member and at least partially clamped in the recess.

In an embodiment, the first connecting member and the second connecting member further extend along the circumferential direction of the outer periphery of the carrier by a predetermined distance to form extending portions, and the extending portions of the first connecting member and the second connecting member are clamped on the upper surface and the lower surface of the carrier relative to the outer peripheral surface of the carrier.

In one embodiment, the carrier has a first guide surface and a second guide surface, the first guide surface and the second guide surface are oppositely positioned at two sides of the notch and are connected with the inner wall for defining the notch, and the first guide surface and the second guide surface are inclined from the direction from the inside of the notch to the outside of the notch to the direction away from the friction rod;

the first guide surface and the second guide surface are abutted against the part of the connecting component surrounding the friction rod.

In one embodiment, the notch is an arc-shaped notch, and the arc-shaped notch is preferably arc-shaped or semi-arc-shaped.

In one embodiment, the first connector includes:

the arc plate is sunken towards the direction of the friction rod, the friction rod is in friction fit with the arc plate, the arc plate protrudes outwards towards the direction of the notch, and at least the top end part of the protruding arc plate is clamped in the notch;

the first clamping jaw is fixedly connected with the arc plate, and the first clamping jaw is clamped on the upper surface and the lower surface relative to the outer peripheral surface of the carrier.

In one embodiment, the second connector includes:

the friction rod is abutted in the groove, and the friction rod is in friction fit with the groove;

and the second clamping jaw is fixedly connected with the connecting plate, and the second clamping jaw is clamped on the upper surface and the lower surface relative to the peripheral surface of the carrier.

In an embodiment, the lens driving mechanism further includes a circuit board electrically connected to the piezoelectric ceramic element.

In one embodiment, the base includes: the side frame is arranged on the bottom plate;

the friction rod, the piezoelectric deformation piece and the counterweight piece are exposed outside the side frame, and the circuit board is arranged on the outer surface of the side frame.

In an embodiment, the lens driving mechanism further includes a guide post disposed on the base, the guide post being parallel to an optical axis of the optical element, and the guide post being slidably connected to the carrier.

In one embodiment, the first jaw comprises:

the first middle clamping plate is fixedly connected with the arc plate and arranged along the height direction of the carrier;

the first middle clamping plate is arranged on the carrier, and the first upper clamping plate and the first lower clamping plate are oppositely arranged on the first middle clamping plate along the height direction of the carrier;

wherein a distance between the first upper board and the first lower board is less than or equal to a height of the carrier.

In one embodiment, the second jaw comprises:

the second middle clamping plate is fixedly connected with the connecting plate and arranged along the height direction of the carrier;

the second upper clamping plate and the second lower clamping plate are oppositely arranged on the second middle clamping plate along the height direction of the carrier;

wherein a distance between the second upper board and the second lower board is less than or equal to a height of the carrier.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a perspective view with a housing in a lens driving mechanism according to an embodiment of the present invention;

fig. 2 is a perspective view of a lens driving mechanism in an embodiment of the present invention with a housing removed;

FIG. 3 is a perspective view of the carrier and connection assembly, friction bar, piezoelectric deformation member, and weight member of an embodiment of the present invention after assembly;

FIG. 4 is a perspective view of the circuit board, the connection assembly, the friction bar, the piezoelectric deformation member, and the weight member after assembly in an embodiment of the present invention;

FIG. 5 is a top view of FIG. 3;

fig. 6 is an enlarged view at a in fig. 5.

Description of reference numerals:

1. a base; 11. a base plate; 12. a side frame; 121. a back plate; 122. a first side plate; 123. a second side plate; 124. connecting the bent plates; 2. a carrier; 21. a recess; 22. an upper surface of the carrier; 23. a lower surface of the carrier; 24. an outer peripheral surface of the carrier; 25. accommodating grooves; 26. a first guide surface; 27. a second guide surface; 28. a notch; 3. rubbing the rod; 4. a piezoelectric deformation member; 5. a balancing weight; 6. a first connecting member; 61. a circular arc plate; 62. a first jaw; 621. a first intermediate pallet; 622. a first upper clamping plate; 623. a first lower clamping plate; 7. a second connecting member; 71. a connecting plate; 72. a second jaw; 721. a second intermediate pallet; 722. a second upper clamping plate; 723. a second lower clamping plate; 724. a second side clamping plate; 8. a circuit board; 9. a guide post; 10. a housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

A lens driving mechanism according to an embodiment of the present invention is described below with reference to the accompanying drawings, as shown in fig. 1 to 4, and includes: base 1, carrier 2, coupling assembling, friction stick 3, piezoelectricity deformation 4 and counterweight, wherein, carrier 2 movably is located base 1, and be used for installing the camera lens, coupling assembling is connected with

carrier

2, 3 outer global and coupling assembling friction fit of friction stick, friction stick 3 extends along the optical axis direction of parallel with the camera lens, piezoelectricity deformation 4 sets up on the up end of friction stick 3, and piezoelectricity deformation 4 is operable to take place to warp along the axis direction of friction stick 3 and move with drive friction stick 3, the counterweight sets up on the up end of piezoelectricity deformation 4, as shown in fig. 4, the counterweight is a balancing weight 5.

Since the lens driving mechanism includes: piezoelectricity deformation 4 and friction stick 3, friction stick 3 and coupling assembling friction fit, and piezoelectricity deformation 4 sets up on the up end of friction stick 3, piezoelectricity deformation 4 is operable to take place to deform in order to drive friction stick 3 motion along 3 ground axis directions of friction stick, in addition, coupling assembling is connected with carrier 2, consequently, drive friction stick 3 through piezoelectricity deformation 4 and move, drive carrier 2 again through friction stick 3 and coupling assembling and move along the axis of friction stick 3, because friction stick 3 extends along the optical axis direction of camera lens, also be carrier 2 and can follow the optical axis direction motion of camera lens, thereby realize the focusing to the camera lens.

In addition, as shown in fig. 2 and 3, the friction bar 3 is disposed at one side of the carrier 2, a notch 21 is formed at a position of an outer peripheral surface 24 of the carrier opposite to the friction bar 3, the notch 21 penetrates through the carrier 2 along a height direction of the carrier 2, the connection assembly surrounds the outer peripheral surface of the friction bar 3, at least a part of the position of the environment-friendly friction bar 3 is elastically deformed and clamped in the notch 21, and at least a part of the position of the connection assembly surrounding the friction bar 3 is clamped in the notch 21 to surround the friction bar 3, so in an assembly process, as shown in fig. 2 to 4, only the friction bar 3 needs to be disposed in the position of the connection assembly surrounding the friction bar 3, then a worker pushes the position of the connection assembly surrounding the friction bar 3 into the notch 21 to utilize the notch 21 to add the connection assembly surrounding the position of the friction bar 3, so that the position can surround the friction bar 3, in this way, the friction bar 3 can be connected to the carrier 2, and it can be easily found from the above that the friction bar 3, the connecting component and the carrier 2 can be connected conveniently and simply only by pushing the connecting component into the notch 21.

Preferably, the connecting assembly is also clamped between the upper surface 22 of the carrier and the lower surface 23 of the carrier against the outer circumferential surface 24 of the carrier. Because coupling assembling still relative outer peripheral face centre gripping is on the upper surface 22 of carrier and the lower surface 23 of carrier, consequently only need to promote coupling assembling motion and just can be with coupling assembling centre gripping on carrier 2 to make the fixed between coupling assembling and the carrier 2 more firm, owing to only need promote coupling assembling, can make coupling assembling push in notch 21, promote coupling assembling simultaneously and also can make coupling assembling centre gripping on carrier 2, consequently the process of installation coupling assembling is very simple and convenient, only need promote coupling assembling can be connected to on carrier 2 with friction stick 3.

Specifically, as shown in fig. 2 to 6, in the present embodiment, the connecting assembly includes a first connecting member 6 and a second connecting member 7, the first connecting member 6 and the second connecting member 7 surround the friction bar 3 and are respectively in friction fit with the friction bar 3, and the first connecting member 6 is located inside the second connecting member 7 and at least partially clamped in the notch 21. Meanwhile, the first connecting piece 6 and the second connecting piece 6 respectively extend along the peripheral circumferential direction of the carrier 2 for a preset distance to form extension parts, and the extension parts of the first connecting piece 6 and the second connecting piece 7 are clamped on the upper surface 22 and the lower surface of the carrier relative to the peripheral surface 24 of the carrier. Because the first connecting piece 6 and the second connecting piece 7 respectively extend along the peripheral circumferential direction of the carrier 2 for a preset distance to form an extending part, and the extending parts of the first connecting piece 6 and the second connecting piece 7 are clamped on the upper surface 22 and the lower surface of the carrier relative to the peripheral surface 24 of the carrier, in the actual assembling process, the connecting assembly can be clamped into the notch 21 by pushing the connecting assembly in the same direction, and meanwhile, the connecting assembly can be clamped on the upper surface and the lower surface of the carrier 2. Thus further simplifying the mounting steps of the connection assembly.

As shown in fig. 4 and 6, the first connecting member 6 includes: the friction plate comprises an arc plate 61 and a first clamping jaw 62, wherein the arc plate 61 is sunken towards the direction of the friction rod 3, the friction rod 3 is in friction fit with the arc plate 61, the arc plate 61 protrudes outwards towards the direction of the notch 21, and the arc plate 61 elastically deforms, so that at least the protruded top end part of the arc plate 61 is clamped in the notch 21 to clamp the friction rod 3; the first claws 62 are fixedly connected with the circular arc plate 61, and the first claws 62 are clamped on the upper surface and the lower surface relative to the outer peripheral surface 24 of the carrier.

Specifically, as shown in fig. 4 and 6, the first jaw 62 includes: the first middle clamping plate 621, the first upper clamping plate 622 and the first lower clamping plate 623, wherein the first middle clamping plate 621 is fixedly connected with the arc plate 61 and extends for a preset distance along the circumferential direction of the periphery of the carrier 2 main body; the first upper clamping plate 622 and the first lower clamping plate 623 are oppositely arranged on the first middle clamping plate 621 along the height direction of the carrier 2, the first middle clamping plate 621 is oppositely arranged on the outer peripheral surface 2424 of the carrier, and the first upper clamping plate 622 and the first lower clamping plate 623 are respectively and operatively abutted against the upper surface and the lower surface of the main body of the carrier 2. Specifically, as shown in fig. 4 and 6, the first latch 62 is held on the side on which the notch 21 is opened. Of course, in some embodiments, the first latch 62 may not be clamped on the side where the recess 21 is opened, that is, the first latch 62 and the recess 21 are not located on the same side.

In addition, as shown in fig. 4 to 6, the second connecting member 7 includes: the friction rod 3 is abutted in the groove, and the friction rod 3 is in friction connection with the groove; the second claws 72 are fixedly connected to the connecting plate 71, and the second claws 72 are held on the upper and lower surfaces with respect to the outer peripheral surface of the main body of the carrier 2.

As shown in fig. 4 to 6, the second jaw 72 includes: the second middle clamping plate 721, the second upper clamping plate 722 and the second lower clamping plate 723, wherein the second middle clamping plate 721 is fixedly connected with the arc plate 61 and extends a preset distance along the circumferential direction of the periphery of the carrier 2 main body; the second upper clamping plate 722 and the second lower clamping plate 723 are oppositely arranged on the second middle clamping plate 721 along the height direction of the carrier 2, the second middle plate is oppositely arranged with the outer peripheral surface 24 of the carrier, and the second upper clamping plate 722 and the second lower clamping plate 723 are respectively and operatively abutted against the upper surface and the lower surface of the main body of the carrier 2. Specifically, as shown in fig. 4 to 6, the second latch 72 is held on the side of the opening 21. Of course, in some embodiments, the second latch 72 may not be clamped on the side where the recess 21 is opened, that is, the second latch 72 and the recess 21 are not located on the same side. In addition, more preferably, the second claw 72 further comprises a second side clamping plate 724, the second side clamping plate 123 is fixedly connected with the end of the second middle clamping plate 721 and is perpendicular to the second middle clamping plate 721, the second upper clamping plate 722 and the second lower clamping plate 723, and the second side clamping plate 724 is clamped on the other side edge of the carrier 2.

In this embodiment, when the friction rod 3 and the piezoelectric deformer need to be assembled, the friction rod 3 can be placed in the grooves of the circular arc plate 61 and the connecting plate 71, the second connecting member 7 is pushed, so that the circular arc plate 61 is clamped in the notch 21 to clamp the friction rod 3, and meanwhile, the first clamping jaw 62 and the second clamping jaw 72 are clamped on the carrier 2.

In addition, as shown in fig. 5 and 6, the outer peripheral surface of the main body of the carrier 2 is provided with a receiving groove 25 at a position opposite to the first connecting member 6, the receiving groove 25 penetrates through the main body of the carrier 2 along the height direction of the main body of the carrier 2, the notch 21 is formed in a groove wall defining the receiving groove 25, and the second connecting member 7 is at least partially positioned in the receiving groove 25.

It should be noted that in some embodiments, the connecting assembly may further comprise a cylindrical sleeve, which replaces the circular arc plate 61 and the connecting plate 71, the friction plate is coaxially connected with the cylindrical sleeve, and the cylindrical sleeve is in friction fit with the friction bar 3, and the cylindrical sleeve is elastically deformed to be snapped into the recess 21, so that the friction bar 3 can be connected to the carrier 2.

Meanwhile, as shown in fig. 6, in order to facilitate the connection component to clamp the portion of the friction bar 3 into the notch 21, as shown in fig. 6, the carrier 2 includes a first guide surface 26 and a second guide surface 27, the first guide surface 26 and the second guide surface 27 are located on two sides of the notch 21 and are connected to the inner wall defining the notch 21, and at the same time, the first guide surface 26 and the second guide surface 27 are inclined from the inside of the notch 21 to the outside of the notch 21 in a direction away from the friction bar 3. And the first guide surface 26 and the second guide surface 27 are both abutted with the part of the connecting component surrounding the friction rod 3, namely the first guide surface 26 and the second guide surface 27 are both abutted with the arc plate 61, the arc plate 61 can be guided by the first guide surface 26 and the second guide surface 27, and the arc plate 61 can be conveniently clamped into the notch 21.

Specifically, as shown in fig. 6, the notch 21 is a circular arc-shaped notch 21, and it is further preferable that the notch 21 is preferably arc-shaped or semi-arc-shaped, but of course, in some embodiments, the notch 21 may also be a square-shaped or other-shaped notch 21 without departing from the scope of the present invention.

In addition, as shown in fig. 2 and 4, the lens driving mechanism further includes a circuit board 8, and the circuit board 8 is electrically connected to the piezoelectric ceramic element. This circuit board 8 is arranged on the base 1, as shown in fig. 2, the carrier 2 is a hollow frame, the lens is fixed in the hollow area of the carrier 2, and the base 1 includes: a bottom plate 11, a side frame 12 arranged on the bottom plate 11; wherein, carrier 2 sets up in side frame 12, and friction stick 3, piezoelectric deformation 4 and balancing weight 5 expose outside side frame 12, and circuit board 8 sets up on the surface of side frame 12. The side frame 12 includes: the back plate 121, the first side plate 122 and the second side plate 123, wherein the back plate 121, the first side plate 122 and the second side plate 123 are all disposed on the bottom plate 11, the first side plate 122 and the second side plate 123 are disposed oppositely, and are all disposed perpendicular to the back plate 121, as shown in fig. 2, a section of the second side plate 123 close to the back plate 121 is left empty for mounting the friction rod 3, the piezoelectric deformation piece 4 and the counterweight 5, so that the friction rod 3, the piezoelectric deformation piece 4 and the counterweight 5 are mounted outside the side frame 12, the second side plate 123 is connected with the back plate 121 through the connecting bent plate 124, the friction rod 3, the piezoelectric deformation piece 4 and the counterweight 5 are disposed outside the connecting bent plate 124, and the circuit board 8 is disposed on the outer surface of the second side plate 123.

In the assembling process, can install friction stick 3 on coupling assembling earlier, coupling assembling adopts above-mentioned mode to be connected to on the carrier 2, be friction fit between friction stick 3 and the coupling assembling this moment, also be when friction stick 3 moves along the axis direction, because friction stick 3 and coupling assembling friction fit, coupling assembling can follow friction stick 3 and move because of the frictional force between 3 with the friction stick, thereby make carrier 2 can follow the axis direction motion of friction stick 3, also be carrier 2 and can drive the optical axis direction motion of camera lens edge. After the friction rod 3 is assembled on the carrier 2, the carrier 2 is horizontally pushed into the base 1 from the direction opposite to the back plate 121, the friction rod 3 penetrates through the lower portion of the connecting bent plate 124, the piezoelectric deformation piece 4 is arranged on the upper end face of the friction rod 3, the piezoelectric deformation piece 4 can be glued on the upper end face of the friction rod 3, or a fixing pin mode is adopted, for example, a pin hole is formed in one side, facing the upper end face of the friction rod 3, of the piezoelectric deformation piece 4, a pin hole is formed in the upper end face of the friction rod 3, and the fixing pin is inserted into the pin holes of the piezoelectric deformation piece 4 and the friction rod 3 respectively and is in interference fit with the two pin holes. The balancing weight 5 is arranged on the upper end face of the piezoelectric deformation piece 4, and similarly, the balancing weight 5 can be glued on the upper end face of the piezoelectric deformation piece 4 or fixedly connected with the piezoelectric deformation piece 4 in a fixing pin mode. In the present embodiment, the piezoelectric deformation member 4 may be a piezoelectric ceramic block. The deformation quantity of the piezoelectric ceramic generated under the action of an electric field is very small, the deformation quantity is not more than one million of the size of the piezoelectric ceramic, and the small change is considered. Therefore, the friction bar 3 can be driven to move by the deformation of the piezoelectric ceramics, and the carrier 2 is driven to move.

In addition, as shown in fig. 2, 3 and 5, the lens driving mechanism further includes a guide post 9 disposed on the base 1, the guide post 9 is parallel to the optical axis of the optical element, and the guide post 9 is slidably connected to the carrier 2. Specifically, the carrier 2 is provided with a notch 28, and the guide post 9 is slidably disposed in the notch 28, so that the carrier 2 can be guided by the guide post 9.

In addition, as shown in fig. 1, the lens driving mechanism further includes a housing 10, and the housing 10 is covered outside the carrier 2 and is fixedly connected to a bottom plate 11 of the base 1.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the utility model, and that various changes in form and details may be made therein without departing from the spirit and scope of the utility model in practice.

Claims

1. A lens driving mechanism, characterized by comprising:

a base;

the carrier is movably positioned on the base and is used for mounting a lens;

a connection assembly connected with the carrier;

the peripheral surface of the friction rod is in friction fit with the connecting assembly, and the friction rod extends in the direction parallel to the optical axis of the lens;

2. The lens driving mechanism according to claim 1, wherein the rubbing stick is provided on one side of the carrier, and a notch is formed in a portion of an outer peripheral surface of the carrier opposite to the rubbing stick, the notch penetrating through the carrier in a height direction of the carrier;

3. The lens driving mechanism as claimed in claim 2, wherein the connecting member comprises a first connecting member and a second connecting member, the first connecting member and the second connecting member surround the friction bar and are respectively in friction fit with the friction bar, the first connecting member is located inside the second connecting member and at least partially clamped in the recess.

4. The lens driving mechanism according to claim 3, wherein the first connecting member and the second connecting member further extend in a circumferential direction of an outer periphery of the carrier by a predetermined distance to form extending portions, respectively, and the extending portions of the first connecting member and the second connecting member are held on the upper surface and the lower surface of the carrier with respect to the outer peripheral surface of the carrier.

5. A lens driving mechanism according to claim 3, wherein the carrier has a first guide surface and a second guide surface, the first guide surface and the second guide surface being located on opposite sides of the notch and each being connected to an inner wall defining the notch, the first guide surface and the second guide surface each being inclined away from the rubbing stick from a direction from inside the notch to outside the notch;

6. The lens driving mechanism according to claim 5, wherein the notch is a circular arc-shaped notch, and the circular arc-shaped notch is preferably arc-shaped or semi-arc-shaped.

7. The lens driving mechanism according to claim 4, wherein the first link member includes:

the arc plate is sunken towards the direction of the friction rod, the friction rod is in friction fit with the arc plate, the arc plate protrudes outwards towards the direction of the notch, and at least the top end part of the protruding arc plate is clamped in the notch; and

8. The lens driving mechanism according to claim 4, wherein the second link member includes:

the friction rod is abutted in the groove, and the friction rod is in friction fit with the groove; and

9. The lens driving mechanism according to claim 1, further comprising a circuit board electrically connected to the piezoelectric ceramic element.

10. The lens driving mechanism according to claim 9, wherein the base includes: the side frame is arranged on the bottom plate;

11. The lens driving mechanism according to claim 1, further comprising a guide post provided on the base, the guide post being parallel to an optical axis of the lens, the guide post being slidably connected to the carrier.