CN219936258U - Anti-shake driving mechanism, imaging device, and electronic apparatus - Google Patents

Abstract

The utility model relates to an anti-shake driving mechanism, an imaging device and electronic equipment. It solves the defects of unreasonable design in the prior art. The anti-shake driving mechanism comprises a base, a shell and a moving body, wherein the shell is buckled on the base, the moving body is suspended in a cavity formed by surrounding the base and the shell, the moving body moves on a plane perpendicular to an optical axis, a carrier moving along the optical axis direction is arranged in the moving body, a driving magnet group which is positioned on the periphery of the carrier is arranged on the top surface of the shell, a moving body driving coil group which is positioned on one side of the top surface, away from the driving magnet group, is arranged on the moving body, and a carrier driving coil group which is spaced with the driving magnet group is arranged on the peripheral surface of the carrier. The utility model has the advantages that: the purpose of light load movement of the moving body is achieved, meanwhile, the driving magnet group is always fixed, so that the problem of mutual magnetic interference can be solved, and the shooting precision and the driving stability rate are improved.

Description

Anti-shake driving mechanism, imaging device, and electronic apparatus

Technical Field

The utility model belongs to the technical field of lens driving, and particularly relates to an anti-shake driving mechanism, an imaging device and electronic equipment.

Background

The existing suspension line OIS motor mainly has a dynamic magnetic structure, a rotor is heavy, and the problem of magnetic interference exists. For example, CN109413305B discloses a multi-lens camera module, in which the main driving magnets in the auto-focusing modules included in the first and second lens modules do not cover the adjacent surfaces between the two lens modules at the same time, and a smaller-volume magnet is used as the sub-driving magnet in the optical image stabilization module included in the first and second lens modules. The arrangement of the main magnetic field and the auxiliary magnetic field reduces the mutual interference between the magnetic fields, so that the distance between the first lens module and the second lens module can be shortened, the problem of space arrangement of the mobile phone can be solved, and the arrangement and the application of multiple lenses can be further prolonged.

Although the magnetic interference is reduced to a certain extent by the scheme, the driving magnet of the scheme needs to follow motion during anti-shake and/or focusing, so that the weight of the active cell of the whole module is heavy, and in order to realize driving of corresponding strokes, the coil needs to be enlarged, which is not beneficial to microminiaturization development.

Secondly, the above solution still suffers from magnetic interference problems.

Disclosure of Invention

The present utility model has been made in view of the above problems, and an object of the present utility model is to provide an anti-shake driving mechanism, an imaging device, and an electronic apparatus that can solve the above problems.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the anti-shake driving mechanism comprises a base, a shell and a moving body, wherein the shell is buckled on the base, the moving body is suspended in a cavity formed by surrounding the base and the shell, the moving body moves on a plane perpendicular to an optical axis, a carrier moving along the optical axis direction is arranged in the moving body, a driving magnet group which is positioned on the periphery of the carrier is arranged on the top surface of the shell, a moving body driving coil group which is positioned on one side of the top surface, away from the driving magnet group, is arranged on the moving body, and a carrier driving coil group which is spaced with the driving magnet group is arranged on the peripheral surface of the carrier.

In the above anti-shake driving mechanism, the driving magnet group includes at least three magnets, two of the three magnets are distributed along an X direction of the plane, and the remaining magnets are distributed along a Y direction of the plane.

In the anti-shake driving mechanism, a chamfer is arranged at an inner edge of one side of each magnet close to the base.

In the anti-shake driving mechanism, one side of the magnet is fixed on the top surface, and a distance is reserved between one side of the magnet away from the top surface and the base.

In the anti-shake driving mechanism, the top surface is provided with a vertical surface perpendicular to the top surface, the top surface and the vertical surface form a magnet fixing position, and one side of the magnet is fixed on the magnet fixing position one by one.

In the anti-shake driving mechanism, a plurality of concave areas corresponding to the magnets one by one are arranged on the outer wall, close to the top surface, of the shell, an inner convex part corresponding to the concave areas is arranged on the outer wall, close to the top surface, of the shell, and the vertical surface is arranged on one side surface, close to the optical axis, of the inner convex part.

In the above anti-shake driving mechanism, the anti-shake driving mechanism further comprises a front reed, a rear reed and a suspension wire;

the front reed is connected with the front side of the movable body and the front side of the carrier;

the rear reed is connected to the rear side of the movable body and the rear side of the carrier;

the front end of the suspension wire is connected with the front reed, and the rear end of the suspension wire is connected with the base.

In the anti-shake driving mechanism, four suspension wires are arranged on the periphery of the movable body; the base is provided with a first conductive piece electrically connected with the suspension wire; the front reed is provided with four pieces, the movable body driving coil group comprises at least three movable body driving coils, a second conductive piece electrically connected with the movable body driving coils is arranged on the movable body, and the second conductive piece is electrically connected with the front reed.

In the above anti-shake driving mechanism, the back reed has at least two, one end surface of the moving body, which is close to the base, is provided with two conducting elastic pieces, one end of each conducting elastic piece is fixed on the moving body, one end of each conducting elastic piece is respectively and electrically connected with one back reed, the back reed is electrically connected with the carrier driving coil set, and the other end of each conducting elastic piece is electrically connected with a third conducting piece arranged on the base.

In the above anti-shake driving mechanism, the conductive elastic pieces are distributed on one diagonal line of the moving body.

The utility model also discloses an image pickup device, which comprises the anti-shake driving mechanism.

The utility model also discloses electronic equipment which comprises the camera device.

Compared with the prior art, the utility model has the advantages that:

the driving magnet group which does not move all the time is used as a driving source and matched with the coil group, so that the aim of light load movement of the moving body is fulfilled.

Since the driving magnet group is fixed, the driving force for the moving body can be greatly reduced, that is, the manufacturing cost for the coil group, particularly the manufacturing cost for the moving body driving coil group can be greatly reduced.

Drawings

Fig. 1 is a schematic perspective view of an anti-shake driving mechanism according to the present utility model.

Fig. 2 is a schematic diagram of a top view of an anti-shake driving mechanism according to the present utility model.

FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 taken along line A-A.

Fig. 4 is a schematic diagram of an anti-shake driving mechanism according to the present utility model with a removed housing.

Fig. 5 is a schematic view of the structure of fig. 4 with the chassis removed.

Fig. 6 is a schematic diagram of a fifth embodiment provided by the present utility model.

Fig. 7 is a schematic view of a sixth embodiment provided by the present utility model.

In the figure, a base 10, a first conductive member 100, a third conductive member 101, a boss 102, an IC chip 103, a fourth conductive member 104, a housing 11, a ceiling 110, a vertical surface 111, a concave region 112, an inner convex portion 113, a movable body 12, a second conductive member 120, a flexible circuit board 121, a conductive spring piece 122, a detection magnet 123, a carrier 13, a driving magnet group 14, a magnet 140, a chamfer 141, a movable body driving coil group 15, a movable body driving coil 150, a carrier driving coil group 16, a front reed 17, a rear reed 18, a suspension wire 19, and an optical axis a.

Detailed Description

The following are specific embodiments of the utility model and the technical solutions of the utility model will be further described with reference to the accompanying drawings, but the utility model is not limited to these embodiments.

This embodiment provides three coordinates, namely X, Y and Z-axis coordinates.

It will be understood that the Z axis is the optical axis, the X axis and the Y axis are two axes perpendicular to the Z axis plane, and the X axis and the Y axis are perpendicular to each other.

Example 1

As shown in fig. 1-3, the anti-shake driving mechanism includes a base 10 and a housing 11 fastened on the base 10, the housing 11 is a metal housing, a top surface 110 of the housing 11 has a light hole, and a moving body 12 suspended in a cavity formed by surrounding the base 10 and the housing 11, the moving body 12 moves on a plane perpendicular to an optical axis a (i.e. anti-shake), a carrier 13 moving along the optical axis a is disposed in the moving body 12, and the movement in the optical axis direction is focusing.

The top surface 110 of the housing 11 is provided with a driving magnet group 14 positioned at the circumferential periphery of the carrier 13, the moving body 12 is provided with a moving body driving coil group 15 positioned at one side of the driving magnet group 14 far away from the top surface 110, the moving body driving coil group 15 and the driving magnet group 14 are distributed at intervals, and the carrier 13 is provided with a carrier driving coil group 16 spaced from the driving magnet group 14. That is, the driving magnet group 14 of the present embodiment can be used as a common magnet, so that the internal space can be greatly saved, and the development of miniaturization can be achieved.

In this embodiment, the driving magnet set 14 which is not moving all the time is used as a driving source, and the coil set is matched to achieve the purpose of light-load movement of the moving body 12, meanwhile, since the driving magnet set 14 is fixed all the time, the problem of mutual magnetic interference can be solved, so as to improve the shooting precision and driving stability.

Next, since the drive magnet group 14 is stationary, the driving force for the movable body 12 can be greatly reduced, that is, the manufacturing cost for the coil group, particularly the manufacturing cost for the movable body drive coil group 15 can be greatly reduced.

In addition, the driving magnet group 14 is fixed to the ceiling 110 of the housing 11, and since the housing 11 is made of metal, the housing 11 can perform a magnetizing function on the driving magnet group 14.

Specifically, as shown in fig. 3-4, the driving magnet set 14 in this embodiment includes three to four magnets 140, the shape of the magnets 140 may be understood as rectangular, each of the magnets 140 may be a single piece of magnetic material, or may be formed by combining multiple pieces of magnetic materials, and when performing anti-shake driving, the following two conditions may be adopted:

first, when three magnets 140 are used, two magnets 140 of the three magnets 140 are distributed along the X direction of the plane, and the remaining magnets 140 are distributed along the Y direction of the plane.

Second, when four magnets 140 are used, two magnets 140 are arranged along the X direction of the plane, and the remaining two magnets 140 are arranged along the Y direction of the plane.

Preferably, the magnet 140 is fixed to the ceiling 110, that is, both are fixed by a surface-to-surface method, and of course, in order to improve the fixing firmness, a glue may be provided between the surface and the surface, and a space may be provided between the base 10 and the side of the magnet 140 away from the ceiling 110. The clearance that leaves can reduce the weight under the prerequisite that satisfies the drive, simultaneously, the dismouting maintenance of magnetite 140 of being convenient for efficiency is higher.

In order to further improve the magnet fixing firmness, as shown in fig. 3-4, a vertical surface 111 perpendicular to the top surface 110 is provided on the top surface 110, the top surface 110 and the vertical surface 111 form a magnet fixing position, the magnet fixing position can be understood as a step, and one side of the magnet 140 is fixed on the corresponding magnet fixing position one by one. The outer wall of the shell 11 close to the top surface 110 is provided with a plurality of concave areas 112 which are in one-to-one correspondence with the magnets 140, the outer wall of the shell 11 close to the top surface 110 is provided with inner convex portions 113 which are corresponding to the concave areas 112, and the vertical surface 111 is arranged on one side surface of the inner convex portions 113 close to the optical axis a.

The concave region 112 and the inner convex portion 113 are processed by the concave-convex forming mode, so that the production efficiency can be improved, meanwhile, the consistency of the positions of the vertical faces 111 can be ensured, the accuracy of the installation positions of the magnets 140 is improved, and the magnets 140 are ensured to be parallel to the optical axis.

Further, a chamfer 141 is provided at an inner corner of one side of each magnet 140 adjacent to the base 10. The chamfer 141 is any one of a chamfer and a circular arc chamfer. The chamfer 141 is designed for weight reduction and space avoidance.

Example two

The structure and the working principle of the present embodiment are basically the same as those of the first embodiment, and the different structures are as follows: the driving magnet set 14 positioned on the outer wall of the carrier 13 is arranged on one side of the base 10 close to the movable body 12, which is not shown.

Example III

Based on the first embodiment, as shown in fig. 4 to 5, the present embodiment of the anti-shake driving mechanism further discloses a front reed 17, a rear reed 18, and a suspension wire 19. Specifically, the front reed 17 is connected to the front side of the movable body 12 and the front side of the carrier 13, and the front reed 17 plays a role in elastic reset and electric conduction; the rear reed 18 is connected to the rear side of the movable body 12 and the rear side of the carrier 13, and the rear reed 18 has elastic resetting and conductive effects; the front end of the suspension wire 19 is connected to the front reed 17, the rear end of the suspension wire 19 is connected to the base 10, and the suspension wire 19 plays a role in suspending the movable body 12 and conducting electricity.

Further, in this embodiment, four suspension wires 19 are located at the periphery of the moving body 12, specifically, the periphery of four outer corners of the moving body 12; the base 10 is provided with first conductive pieces 100 connected with at least three suspension wires 19 in parallel in the suspension wires 19, and the first conductive pieces 100 are arranged at any positions of the cross section of the base 10; the front reed 17 has four pieces, the moving body driving coil group 15 includes at least three moving body driving coils 150, and the moving body 12 is provided with a second conductive member 120 connected in parallel with at least three moving body driving coils 150 of the moving body driving coils 150. The second conductive member 120 is disposed at any position of the cross section of the movable body 12.

The first conductive member 100 and the second conductive member 120 are made of metal, and perform conductive and reinforcing functions. Of course, injection molding is preferred.

The first conductive member 100 is electrically connected to an external power source, and at this time, current is sequentially introduced into the suspension wire 19, the front reed 17, the second conductive member 120 and the moving body driving coil 150, and when the moving body driving coil 150 is energized, lorentz force is formed between the moving body driving coil 150 and the magnets 140 at corresponding intervals, so as to drive the moving body 12 to move in the X axis or the Y axis, thereby achieving the anti-shake purpose.

When the number of the moving body driving coils 150 is four, the number of the first conductive members 100 is four.

Of course, in order to improve the attachment/detachment efficiency, the flexible circuit board 121 is provided on the movable body 12, and the movable body driving coil group 15 is electrically connected to the flexible circuit board 121. For example, the moving body driving coil group 15 is embedded in the cross section of the flexible circuit board 121, so that the flexible circuit board 121 and the moving body driving coil group 15 are integrated. The flexible circuit board 121 is parallel to the XY plane, and the moving body driving coils 150 on the flexible circuit board 121 are in one-to-one correspondence with the magnets 140 and are located at the rear side of the magnets 140 in the optical axis direction.

As shown in fig. 3-5, the back reed 18 has at least two pieces, two conducting spring plates 122 are disposed at an end surface of the movable body 12 near the base 10, one end of each conducting spring plate 122 is fixed on the movable body 12, one end of each conducting spring plate 122 is electrically connected to one back reed 18, the electrical connection can be conducted through an embedded metal piece, the back reed 18 is electrically connected to the carrier driving coil set 16, the carrier driving coil set 16 in this embodiment is a coil surrounding the circumference of the carrier 13, and the other end of each conducting spring plate 122 is electrically connected to the third conductive piece 101 disposed on the base 10. The third conductive element 101 is disposed on the cross section of the base 10, for example, by injection molding and insert molding, and is directly formed inside the base 10.

The first conductive member 100, the second conductive member 120, and the third conductive member 101 have PIN PINs extending out of the circumferential surface of the base 10, respectively, so as to be in communication with an external circuit.

As shown in fig. 4-5, the conducting spring plates 122 are distributed on one of the diagonal lines of the moving body 12. To act as a center of gravity counterbalance. The conducting spring 122 plays a role in conducting electricity, and at the same time, provides a balancing function for the gravity center of the carrier 13, so that the AF power supply design is simpler, and cost increase, capacity reduction and the like caused by excessive component design are avoided.

After the third conductive element 101 is powered on, the conductive spring piece 122, the rear spring piece 18 and the carrier driving coil set 16 are sequentially led in, and the carrier driving coil set 16 and the magnet 140 generate lorentz force after being powered on so as to drive the carrier 13 to axially move on the optical axis a, thereby realizing focusing movement.

Example IV

Based on any one of the first to third embodiments, as shown in fig. 4, a boss 102 is provided on a base 10, an IC chip 103 is designed on the boss 102, a first conductive member 100, a second conductive member 120 and a third conductive member 101 are respectively connected with the IC chip 103, a detecting magnet 123 is provided at any corner of a moving body 12, the IC chip 103 and the detecting magnet 123 are distributed at intervals, and a fourth conductive member 104 is designed on the base 10 for supplying power to the IC chip 103, and the fourth conductive member 104 is arranged in a manner referring to the first conductive member 100 or the third conductive member 101.

Preferably, the number of the bosses 102 is plural in this embodiment, and one of the IC chips 103 and the detection magnet 123 is used for detecting the movement amount of the movable body 12 in the X axis, and the other IC chip 103 and the detection magnet 123 are used for detecting the movement amount of the movable body 12 in the Y axis.

Example five

As shown in fig. 6, the present embodiment provides an image pickup apparatus including the anti-shake driving mechanism of any of the first to fourth embodiments. The lens is mounted in the carrier 13 at this time.

Example six

As shown in fig. 7, the present embodiment provides an electronic apparatus including the image pickup device of the fifth embodiment. Electronic devices such as cell phones and the like.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (12)

1. Anti-shake actuating mechanism, including base (10) and detain in shell (11) on base (10), and unsettled in base (10) with shell (11) enclose moving body (12) in the cavity that forms, moving body (12) remove on the plane of perpendicular to optical axis (A) and be equipped with in moving body (12) along carrier (13) of optical axis direction motion, characterized in that, top (110) of shell (11) are equipped with and are located carrier (13) peripheral drive magnetite group (14) be equipped with on moving body (12) be located drive magnetite group (14) are kept away from top (110) one side moving body drive coil group (15) carrier (13) periphery be equipped with carrier drive coil group (16) of drive magnetite group (14) interval.

2. The anti-shake driving mechanism according to claim 1, wherein the driving magnet group (14) includes at least three magnets (140), two of the three magnets (140) being distributed along an X-direction of the plane, and the remaining magnets (140) being distributed along a Y-direction of the plane.

3. The anti-shake driving mechanism according to claim 2, wherein a chamfer (141) is provided at an inner corner of a side of each magnet (140) adjacent to the base (10).

4. The anti-shake driving mechanism according to claim 2, wherein the top surface (110) is provided with a vertical surface (111) perpendicular to the top surface (110), the top surface (110) and the vertical surface (111) form a magnet fixing position, and one side of the magnet (140) is fixed on the corresponding magnet fixing position one by one.

5. The anti-shake driving mechanism according to claim 4, wherein a plurality of concave areas (112) corresponding to the magnets (140) one by one are arranged on the outer wall of the housing (11) close to the top surface (110), an inner convex portion (113) corresponding to the concave areas (112) is arranged on the outer wall of the housing (11) close to the top surface (110), and the vertical surface (111) is arranged on one side surface of the inner convex portion (113) close to the optical axis (a).

6. The anti-shake driving mechanism according to claim 1, further comprising a front reed (17), a rear reed (18), and a suspension wire (19);

the front reed (17) is connected to the front side of the movable body (12) and the front side of the carrier (13); the rear reed (18) is connected to the rear side of the movable body (12) and the rear side of the carrier (13); the front end of the suspension wire (19) is connected to the front reed (17), and the rear end of the suspension wire (19) is connected to the base (10).

7. The anti-shake driving mechanism according to claim 6, wherein the suspension wires (19) are four and located at the periphery of the movable body (12); the base (10) is provided with a first conductive piece (100) electrically connected with the suspension wire (19); the front reed (17) is provided with four pieces, the moving body driving coil group (15) comprises at least three moving body driving coils (150), a second conductive piece (120) electrically connected with the moving body driving coils (150) is arranged on the moving body (12), and the second conductive piece (120) is electrically connected with the front reed (17).

8. The anti-shake driving mechanism according to claim 7, wherein a flexible circuit board (121) is provided on the moving body (12), and the moving body driving coil group (15) is electrically connected to the flexible circuit board (121).

9. The anti-shake driving mechanism according to claim 6, wherein the back reed (18) has at least two pieces, two conducting elastic pieces (122) are disposed on an end surface of the moving body (12) near the base (10), one end of each conducting elastic piece (122) is fixed on the moving body (12), one end of each conducting elastic piece (122) is electrically connected to one back reed (18), the back reed (18) is electrically connected to the carrier driving coil assembly (16), and the other end of each conducting elastic piece (122) is electrically connected to a third conductive member (101) disposed on the base (10).

10. The anti-shake driving mechanism according to claim 9, wherein the conductive elastic pieces (122) are distributed on one diagonal line of the moving body (12).

11. An image pickup apparatus, characterized in that the image pickup apparatus comprises the anti-shake driving mechanism according to any one of claims 1 to 10.

12. An electronic device comprising the image pickup apparatus according to claim 11.