CN211454183U - Lens driving device, camera module and electronic equipment - Google Patents

Abstract

A lens driving device, a camera module and an electronic device are provided, wherein the lens driving device comprises a base structure and a rotor, the rotor is used for bearing a lens and can move relative to the base structure, and the base structure comprises a base and an elastic sheet which is arranged on the upper surface of the base and used for being connected with the rotor; the base comprises a base body, the base body is provided with first corner posts which extend upwards respectively at two adjacent corner positions, a side wall is formed by the base body extending upwards between the two first corner posts, and a channel which has the same shape as the tail part of the elastic sheet and is embedded in the tail part of the elastic sheet is formed between the first corner posts and the side wall. The utility model discloses a pedestal upwards extends and forms the lateral wall, and is formed with the shape between first corner post and the lateral wall the same in order to inlay and establish the shell fragment afterbody in channel wherein to can base intensity, and can be firm fixed shell fragment on the base, do not need the shaping of Inserting, processing is simple, can show promotion production efficiency.

Description

Lens driving device, camera module and electronic equipment

Technical Field

The utility model relates to an imaging technology field especially relates to a camera lens drive arrangement, camera module and electronic equipment.

Background

With the progress of science and technology, the application of camera modules is more and more extensive, and at present, except cameras, mobile phones, computers and other electronic equipment are equipped with camera modules, so that people can take pictures at any time and any place conveniently, and convenience and fun are brought to the life of people. The camera module comprises a Fixed Focus (FF) camera module and an Automatic Focusing (AF) camera module, and in the AF camera module, a lens can be driven to move by a lens driving device (motor) so as to realize focusing. Meanwhile, the current camera module generally has an anti-shake function, and therefore, the lens is also required to be movable.

In order to move the lens, the lens driving device generally includes a stator and a mover, and the mover carries the lens and is relatively movable with respect to the stator. The stator comprises a base structure, and the base structure comprises a base and an elastic sheet which is arranged on the upper surface of the base and used for being connected with the rotor. Generally, the base includes a base body and four corner posts disposed at four corners of the base body for cooperating with the housing. The body is flat and has a relatively weak structure, and usually requires a metal sheet to be insert molded into the body to improve its strength. In addition, the dome also typically needs to be held in the housing by an Inserting molding. However, the insert molding is complex, and the production efficiency is seriously influenced.

The foregoing description is provided for general background information and is not admitted to be prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can improve production efficiency's camera lens drive arrangement, camera module and electronic equipment.

The utility model provides a lens driving device, which comprises a base structure and a rotor, wherein the rotor is used for bearing a lens and can move relative to the base structure, and the base structure comprises a base and a spring sheet which is arranged on the upper surface of the base and is used for connecting the rotor; the base comprises a base body, the base body is provided with first corner posts which extend upwards respectively at two adjacent corner positions, a side wall is formed by the base body extending upwards between the two first corner posts, and a channel which has the same shape as the tail part of the elastic sheet and is embedded in the tail part of the elastic sheet is formed between the first corner posts and the side wall.

Further, the upper surface of the channel is higher than the upper surface of the seat body.

Furthermore, the seat body is provided with second corner posts respectively extending upwards at the other two corner positions, the elastic sheet comprises a first end part and a second end part, and the first end part and the second end part are both provided with mounting holes; a first step part with the upper surface lower than that of the first corner post is arranged on one side, close to the second corner post, of each first corner post, and a first convex post matched and fixed with the mounting hole is arranged on the upper surface of the first step part; and a second step part with the upper surface lower than that of the second corner post is arranged on one side of each second corner post close to the first corner post, and a second convex column matched and fixed with the mounting hole is arranged on the upper surface of the second step part.

The base structure and the shell form a containing cavity for containing the rotor, the shell comprises a top plate and four side plates formed by downward extension of the edge of the top plate, and an inner arc surface is arranged between the adjacent side plates; the first corner post and the second corner post are both provided with an outer arc surface matched with the inner arc surface.

Furthermore, bulges are arranged on the inner sides of two opposite side plates of the shell, the rotor comprises a carrier for bearing a lens, the carrier is provided with corresponding surfaces corresponding to the bulges, and gaps for limiting the movement of the carrier are formed between the bulges and the corresponding surfaces.

Further, the protrusion comprises a first protrusion portion formed by vertically extending the side plate inward and a second protrusion portion formed by vertically extending the first protrusion portion further inward.

Furthermore, the inner sides of the two end parts of the side plates with the bulges are provided with two bulges, a first connecting part is arranged between the two bulges, and a second connecting part is arranged between the bulges and the side plates without the bulges.

Furthermore, the tail part of the elastic sheet is positioned at the tail end of the first end part and is bent.

The utility model also provides a camera module, include as above camera lens drive arrangement.

The utility model also provides an electronic equipment, include as above the camera module.

The utility model provides a camera lens drive arrangement, camera module and electronic equipment upwards extends through the pedestal and forms the lateral wall, and is formed with the shape between first corner post and the lateral wall the same in order to inlay and establish the shell fragment afterbody in channel wherein to can base intensity, and can be firm fixed shell fragment on the base, do not need the shaping of Inserting, processing is simple, can show promotion production efficiency.

Drawings

Fig. 1 is a schematic view of a lens driving device according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the housing and the carrier of the lens driving apparatus shown in fig. 1.

Fig. 3 is an exploded perspective view of the housing and carrier shown in fig. 2 at another angle.

Fig. 4 is a perspective assembly view of the housing and carrier shown in fig. 2.

Fig. 5 is an exploded perspective view of a base structure of the lens driving apparatus shown in fig. 1.

Fig. 6 is a perspective assembly view of the base structure shown in fig. 5.

Fig. 7 is an exploded perspective view of the base and the FPC module in the lens driving device shown in fig. 1.

Fig. 8 is a perspective assembly view of the base and the FPC module shown in fig. 7.

Fig. 9 is an exploded perspective view of the base and the FPC module shown in fig. 7 at another angle.

Fig. 10 is a perspective assembly view of the base and the FPC module shown in fig. 9.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 10, in the present embodiment, the lens driving device includes a mover 1 and a stator (not shown). The mover 1 carries a lens (not shown) and can move relative to the stator to achieve functions of auto-focusing and optical anti-shake.

The stator includes a base structure 2 and a housing 3, the base structure 2 and the housing 3 form an accommodating cavity for accommodating the mover 1 therein. The base structure 2 comprises a base 21 and a second elastic sheet 22 arranged on the upper surface of the base 21, a first elastic sheet 4 is arranged between the shell 3 and the mover 1, and the first elastic sheet 4 and the second elastic sheet 22 are both connected with the mover 1 so that the mover 1 can be kept at a predetermined position in the vertical direction relative to the stator 2 and can be restored to an original state after movement.

As shown in fig. 2 to 4, the housing 3 is formed by molding a plastic material, and has a cover-shaped structure, including a square top plate 31 and a side plate 32 formed by extending the edge of the top plate 31 downward. The middle part of the top plate 31 is provided with a through hole 310 to avoid the lens. Between adjacent side plates 32 there is provided a transition fillet (not indicated) having an intrados 33. The inner sides of the two end portions of the two opposite side plates 32 are respectively provided with a protrusion 34, and each protrusion 34 includes a first protrusion 341 formed by the inward vertical extension of the side plate 32 and a second protrusion 342 formed by the further inward vertical extension of the first protrusion 341. The first protruding portion 341 and the second protruding portion 342 are both rectangular, the upper surfaces of the first protruding portion 341 and the second protruding portion 342 are both connected to the top plate 31, the lower surface of the first protruding portion 341 is lower than the lower edge of the side plate 32, and the lower surface of the second protruding portion 342 is lower than the lower surface of the first protruding portion 341. A first connecting portion 35 is disposed between the two first protrusions 341 extending from the same side plate 32. A second connecting portion 36 is disposed between the two protrusions 34 extending from the same side plate 32 and the side plate 32 without the protrusions 34. The first protruding portion 341, the first connecting portion 35, and the second connecting portion 36 can reinforce the strength of the second protruding portion 342 and can avoid various elements on the mover 1.

The mover 1 includes a carrier 11 for carrying a lens, and the carrier 11 is mounted with a coil 12 and the like. The corresponding surface 111 is disposed on the corresponding second protrusion 342 of the carrier 11, and a predetermined gap is formed between the corresponding surface 111 and the inner surface of the second protrusion 342 to limit the displacement and/or rotational displacement of the carrier 11 relative to the base structure 2 in the lateral direction. The second protruding part 342 increases the impact strength between the shell 3 and the carrier 11, so that the shell 3 is protected from being damaged; and the impact area of the shell 3 and the carrier 11 is increased, the fragments generated during impact are reduced, and the stains generated during imaging of the camera module are reduced or even avoided.

As shown in fig. 5 and 6, the base 21 has a square flat seat 211, the seat 211 has two adjacent corners respectively extending upward to form a first corner column 213, and the other two corners respectively form a second corner column 212.

The first corner post 213 has an outer contour 2131 at a corner to match the inner contour 33. Each first corner post 213 is provided with a first step portion 216 having an upper surface lower than that of the first corner post 213 at a side close to the second corner post 212, and the upper surface of the first step portion 216 is provided with a first protruding pillar 217 (see fig. 9). Between the two first corner posts 213, the base extends upward to form a sidewall 218, a channel 219 is formed between the first corner posts 213 and the sidewall 218, and the upper surface of the channel 219 is higher than the upper surface of the base 211 and is flush with the upper surface of the first step portion 216.

The second corner post 212 is substantially prism-shaped and has an outer arc surface 2121 (see fig. 9) at a corner thereof for matching with the inner arc surface 33. Each second corner post 212 is provided with a second step portion 214 on one side close to the first corner post 213, the upper surface of which is lower than that of the second corner post 212, and the upper surface of the second step portion 214 is provided with a second convex post 215. The second corner post 212 and the first corner post 213 are provided with the extrados 2121 and 2131 which are matched with the inner cambered surface 33 of the shell, so that the bonding area of the base 21 and the shell 3 is increased, the bonding strength is improved, and the drawing force is increased.

There are two second resilient sheets 22, each second resilient sheet 22 has a first end 222 and a second end 221, which are respectively mounted on the first corner column 213 and the second corner column 212 on the same side. The second end 221 and the first end 222 are respectively provided with mounting holes 2211 and 2221 to be correspondingly matched with the second convex column 215 and the first convex column 217. The tail portion 223 is disposed at the end of the first end portion 222, the tail portion 223 is bent (limited in the horizontal direction), and is embedded in the groove 219, the shape of the cross section of the groove 219 is the same as that of the tail portion 223, so as to firmly fix the first end portion 222, and the non-Insert molding structure can be used to fix the second resilient tab 22, thereby reducing the cost of the base 21. The upper surface of the slot 219 is higher than the upper surface of the base 211, which not only supports the tail 223 of the second resilient piece, but also increases the strength of the first corner post 213.

As shown in fig. 7 to 10, the sidewall 218 is provided with three through-going housing holes 2181, 2182, 2183 and a plurality of recesses 2184 located on the outer surface, and the recesses 2184 are substantially uniformly distributed in the regions where the housing holes 2181, 2182, 2183 are not located. The lower portion of the sidewall 218 protrudes from the base 211, and two positioning posts 2185 are disposed thereon.

An FPC (flexible circuit board) module 5 is attached and fixed to the outer side of the sidewall 218, and the FPC module 5 includes a flexible circuit board 51 and a plurality of electronic components disposed on the inner surface of the flexible circuit board 51, in this embodiment, the electronic components include a chip 52, an inductor 53 and two capacitors 54 (or one capacitor). The inductor 53 and the capacitor 54 are connected in parallel to form a filter circuit, and then are connected in series with the chip 51, so as to achieve better noise reduction and filtering effects. The chip 52, the inductor 53 and the two capacitors 54 are mounted at positions corresponding to the receiving holes 2181, 2182 and 2183 of the sidewall 218, so that when the FPC module 5 is mounted on the sidewall 218, the chip 52, the inductor 53 and the two capacitors 54 are just located in the receiving holes 2181, 2182 and 2183, and the chip 52, the inductor 53 and the two capacitors 54 are prevented from being squeezed. In addition, the plurality of housing holes 2181, 2182, and 2183 can reduce the area occupied by the housing holes and ensure the strength of the side walls. The recessed portion 2184 of the sidewall 218 is used to store glue when the FPC module 5 is attached to the base 21, so as to increase the fixing strength between the FPC module 5 and the base 21. Two positioning holes 55 are formed at the lower portion of the FPC module 5 for matching with the two positioning posts 2185 on the sidewall 218, which is beneficial to accurately positioning the FPC module 5 and the base 21 during installation.

The embodiment also provides a camera module comprising the lens driving device.

The embodiment also provides an electronic device comprising the camera module.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the sake of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A lens driving device is characterized by comprising a base structure and a rotor, wherein the rotor is used for bearing a lens and can move relative to the base structure; the base comprises a base body, the base body is provided with first corner posts which extend upwards respectively at two adjacent corner positions, a side wall is formed by the base body extending upwards between the two first corner posts, and a channel which has the same shape as the tail part of the elastic sheet and is embedded in the tail part of the elastic sheet is formed between the first corner posts and the side wall.

2. The lens driving apparatus as claimed in claim 1, wherein an upper surface of the groove is higher than an upper surface of the housing.

3. The lens driving device as claimed in claim 1, wherein the seat body is provided with second corner posts respectively extending upward at the other two corners, the resilient plate includes a first end portion and a second end portion, and the first end portion and the second end portion are provided with mounting holes; a first step part with the upper surface lower than that of the first corner post is arranged on one side, close to the second corner post, of each first corner post, and a first convex post matched and fixed with the mounting hole is arranged on the upper surface of the first step part; and a second step part with the upper surface lower than that of the second corner post is arranged on one side of each second corner post close to the first corner post, and a second convex column matched and fixed with the mounting hole is arranged on the upper surface of the second step part.

4. The lens driving device as claimed in claim 3, further comprising a housing, wherein the base structure and the housing form a receiving cavity for receiving the mover, the housing includes a top plate and four side plates formed by extending edges of the top plate downward, and an inner curved surface is disposed between adjacent side plates; the first corner post and the second corner post are both provided with an outer arc surface matched with the inner arc surface.

5. The lens driving apparatus as claimed in claim 4, wherein the housing has protrusions formed on inner sides of two opposite side plates, the mover includes a carrier for carrying the lens, the carrier has corresponding surfaces corresponding to the protrusions, and a gap is formed between the protrusions and the corresponding surfaces for limiting movement of the carrier.

6. The lens driving apparatus as claimed in claim 5, wherein the protrusion includes a first protrusion portion formed by the side plate extending vertically inward and a second protrusion portion formed by the first protrusion portion extending vertically further inward.

7. The lens driving device according to claim 5, wherein the side plate provided with the projection is provided with two projections at inner sides of both end portions, a first connecting portion is provided between the two projections, and a second connecting portion is provided between the projection and the side plate not provided with the projection.

8. A lens driving device as claimed in claim 3, wherein the tail of the resilient plate is located at the end of the first end and is bent.

9. A camera module comprising the lens driving device according to any one of claims 1 to 8.

10. An electronic device characterized by comprising the camera module according to claim 9.

Images