CN113126231B

CN113126231B - Optical anti-shake driving mechanism, driving and image capturing device, and electronic apparatus

Info

Publication number: CN113126231B
Application number: CN202110470284.0A
Authority: CN
Inventors: 王在伟
Original assignee: New Shicoh Motor Co Ltd
Current assignee: New Shicoh Motor Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2023-07-18
Anticipated expiration: 2041-04-28
Also published as: CN113126231A

Abstract

The invention relates to an optical anti-shake driving mechanism, a driving and image capturing device and an electronic device. The push-loading device solves the technical problems of small push-loading force, short distance and the like in the prior art. The optical anti-shake driving mechanism comprises a fixed body; a translational moving body which is positioned in the fixed body and moves in a translational manner perpendicular to the optical axis plane; the first coil is fixed on the circumference of the carrier; a first magnet, a plurality of magnets are fixed on the translation moving body and are matched with the first coil so as to drive the carrier to move along the optical axis; a second magnet, wherein a plurality of magnets are fixed on the translation moving body, and each first magnet corresponds to at least one second magnet; the coil accommodating space is formed by a first magnet and a second magnet corresponding to the first magnet; and a second coil is arranged in each coil accommodating space and fixed on the fixed body. The invention has the advantages that: the carrier obtains increased pushing weight, and long-distance focusing is achieved.

Description

Optical anti-shake driving mechanism, driving and image capturing device, and electronic apparatus

Technical Field

The invention belongs to the technical field of optical component anti-shake, and particularly relates to an optical anti-shake driving mechanism, a driving and shooting device and electronic equipment.

Background

In order to improve high-pixel image quality when a camera is photographed, camera shake is prevented while focusing, so an optical shake prevention mechanism is widely used in advanced cameras. Optical anti-shake mechanisms for miniature cameras in cell phones have also begun to spread. As the ultra-high pixel image sensor chip and the ultra-large lens start to be applied to the mobile phone camera module, the development of the micro heavy-duty focusing motor technology is more and more important.

When the suspension line OIS focuses the motor to move in translation, adopt the magnet coil to prevent shaking at present, however, its electromagnetic thrust of present anti-shaking mechanism is smaller, electromagnetic thrust in three directions including XYZ is smaller, cause driving anti-shaking mechanism to move the carrying capacity little, and focusing movement distance short etc. defect of the direction of optical axis.

Disclosure of Invention

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

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

this optics anti-shake actuating mechanism includes:

a fixed body with a frame structure;

a translational moving body which is positioned in the fixed body and moves in a translational manner perpendicular to the optical axis plane;

the first coil is fixed on the circumference of the carrier;

a first magnet, a plurality of magnets are fixed on the translation moving body and are matched with the first coil so as to drive the carrier to move along the optical axis;

a second magnet, wherein a plurality of magnets are fixed on the translation moving body, and each first magnet corresponds to at least one second magnet; the coil I, the magnet I and the magnet II jointly act to prolong the moving distance of the carrier along the optical axis and increase the pushing force of electromagnetic driving;

the coil accommodating space is formed by a first magnet and a second magnet corresponding to the first magnet;

and a coil II is arranged in each coil accommodating space and fixed on the fixed body, and the coil II, the magnet I and the magnet II act together to increase the electromagnetic driving pushing force of the translation moving body in a plane perpendicular to the optical axis.

In the above optical anti-shake driving mechanism, the first magnet has two to four magnets and is fixed on the inner circumferential surface of the translational moving body.

In the above optical anti-shake driving mechanism, the first magnet and the second magnet are fixed on the outer circumferential surface of the translational moving body.

In the above optical anti-shake driving mechanism, a radial through hole is formed in the circumference of the translational moving body, each coil accommodating space is communicated with the inside of the translational moving body, an inner hole of each radial through hole corresponds to one magnet I, and two magnets corresponding to the magnet I are distributed at outer holes of the radial through hole.

In the above optical anti-shake driving mechanism, an inner magnet positioning groove with a groove bottom communicated with the inner orifice of the corresponding radial through hole and an outer magnet positioning groove with a groove bottom communicated with the outer orifice of the corresponding radial through hole are respectively arranged on the inner circumferential side surface of the translational moving body, a first magnet is fixed in each inner magnet positioning groove, and a second magnet is respectively arranged on the upper groove wall and the lower groove wall of each outer magnet positioning groove.

In the above-mentioned optical anti-shake driving mechanism, a clamping plate is respectively disposed at the upper and lower end surfaces of each side portion of the translational moving body, the inner side of each clamping plate is extended radially toward the center of the translational moving body, so that the above-mentioned inner magnet positioning groove is formed between the upper and lower surfaces of the inner sides of the two clamping plates, the outer side of each clamping plate opposite to the inner side is extended outside the translational moving body, and the above-mentioned outer magnet positioning groove is formed between the upper and lower surfaces of the outer sides of the two clamping plates.

In the above optical anti-shake driving mechanism, each of the inner peripheral side surfaces of the translational moving body is provided with a vertical positioning groove, the first magnets are inserted into the vertical positioning grooves one by one, and simultaneously, two clamping plates parallel to each other seal the upper notch and the lower notch of the vertical positioning groove and press the first magnets.

In the above-described optical anti-shake driving mechanism, each coil is fixed to the bobbin, respectively, and the bobbin is fixed to the fixed body.

In the above-mentioned optical anti-shake driving mechanism, bosses are respectively provided at four corners of the fixing body, the coil frames are fixed on two adjacent bosses, and the coil frames are overhead by the bosses.

In the above-described optical anti-shake driving mechanism, the fixed body and the translational moving body are connected by a suspension device capable of making the axis of the translational moving body coincide with the optical axis.

In the above optical anti-shake driving mechanism, the suspension device includes a spring plate connected to the fixed body and the translational body, a plurality of suspension wires connected to the fixed body and the translational body, and a concentricity holding structure limited on the suspension wires is provided on the spring plate.

In the above-mentioned optical anti-shake driving mechanism, the concentricity holding structure is limited to the anti-torque portion of the elastic sheet.

In the above optical anti-shake driving mechanism, each suspension wire includes a first wire portion connected with the fixed body and a second wire portion connected with the translational moving body, one end of the first wire portion away from the fixed body and one end of the second wire portion away from the translational moving body are connected, and the concentricity holding structure is limited to the first wire portion and the second wire portion of the suspension wire.

In the above-described optical anti-shake driving mechanism, the concentricity holding structure includes two restricting holes provided on the anti-torque portion, a first wire portion of one suspension wire is inserted in one of the restricting holes and restricted in an aperture larger than an outer diameter of the first wire portion, and a second wire portion of the one suspension wire is inserted in the other restricting hole and restricted in an aperture larger than an outer diameter of the second wire portion.

The application provides a lens driving device, which is provided with the optical anti-shake driving mechanism.

The application provides an imaging device, which is provided with the lens driving device.

The application provides electronic equipment, which is provided with the image pickup device.

Compared with the prior art, the invention has the advantages that:

the first magnet is a focusing motor driving magnet, the second magnet is an optical anti-shake driving magnet, the three magnets form a coil accommodating space for accommodating the first coil, the combination of the first magnet and the second magnet forms the strongest magnetic field in the coil accommodating space, larger electromagnetic force is obtained, and the translational moving body is pushed to do translational movement perpendicular to the optical axis and the loading force of the translational moving body is improved.

The first magnet and the second magnet are respectively arranged around the translational moving body to achieve the purpose of X-Y plane movement, and meanwhile, the magnetic field of the first magnet combination towards the focusing coil is enhanced, so that the pushing weight of the carrier is increased. The performance of the load and long-distance movement of the optical anti-shake mechanism is better than that of other optical anti-shake mechanisms, the reliability can be greatly improved, the production process is simplified, and the cost is reduced.

The suspension wire and the elastic sheet are mutually limited in position by utilizing the concentricity retaining structure, and the axial lead of the translational moving body and the optical axis are overlapped under the synergistic effect of the three, so that the drift of the translational moving body in the direction of the optical axis in which the translational moving body is linearly suspended can be eliminated, the hidden danger of the suspension wire being broken due to the impact of external force can be eliminated, and the focusing assembly on the translational moving body can be subjected to hysteresis-free movement.

Drawings

Fig. 1 is a schematic structural diagram of an anti-shake driving apparatus according to the present invention.

Fig. 2 is a schematic structural diagram of the three-dimensional anti-shake driving device according to the present invention.

Fig. 3 is a schematic diagram of a partial explosion structure of the anti-shake driving apparatus according to the present invention.

Fig. 4 is an exploded view of the anti-shake driving apparatus according to the present invention.

Fig. 5 is an enlarged schematic view of the structure at a in fig. 3.

Fig. 6 is a schematic structural view of the anti-torque portion and the suspension wire in a mated state.

Fig. 7 is a schematic view of a second structure of the suspension wire according to the present invention.

Fig. 8 is a schematic view of a third structure of the suspension wire according to the present invention.

Fig. 9 is a schematic view of a fourth configuration of a suspension wire according to the present invention.

FIG. 10 is a schematic cross-sectional view of the structure taken along line A-A in FIG. 1.

Fig. 11 is an enlarged schematic view of the structure at B in fig. 10.

Fig. 12 is a schematic perspective view of a translational moving body according to the present invention, in which clamping plates are disposed on two end surfaces of one side portion.

Fig. 13 is a schematic top view of fig. 12.

FIG. 14 is a schematic cross-sectional view of the structure taken along line B-B in FIG. 13.

Fig. 15 is a schematic diagram of a magnet two and coil two distribution structure according to the present invention.

Fig. 16 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 17 is a schematic view of a third embodiment provided by the present invention.

Fig. 18 is a schematic view of a fourth embodiment provided by the present invention.

Fig. 19 is a schematic view of a fifth embodiment provided by the present invention.

In the figure, a fixed body 1, an inner boss 10, a boss 11, a housing 12, a translational moving body 2, an outer boss 20, a carrier 21, a first coil 22, a first magnet 23, a radial through hole 24, an inner magnet positioning groove 240, an outer magnet positioning groove 241, a clamp plate 242, a second magnet 25, a second coil 26, a coil bobbin 260, a spring plate 3, a torque-resisting portion 30, a U-shaped portion 300, an S-shaped portion 301, a suspension wire 4, a first wire portion 40, a second wire portion 41, an intermediate wire portion 42, a concentricity holding structure 5, a restricting hole 50, a restricting groove 51, a reinforcing portion 52, and an optical axis a.

Detailed Description

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

As shown in fig. 1-3, the optical anti-shake driving mechanism comprises a fixed body 1, which is in a frame structure and is used for carrying a translational moving body 2 in translational motion.

A translational movement body 2, which is located in the fixed body 1 and moves in translation in a plane perpendicular to the optical axis a. The carrier 21 is mounted in the translational movement body 2, the carrier 21 is suspended in the translational movement body 2, and an optical component, such as a lens or the like, is mounted in the carrier 21.

The carrier 21 can be driven to move along the optical axis direction under the action of the optical anti-shake driving mechanism so as to achieve the purposes of anti-shake and focusing.

In order to be able to eliminate translational drift of the translational moving body 2 in a plane perpendicular to the optical axis and to prevent the disconnection of the suspension wire caused by stress, the present embodiment provides an optical anti-shake suspension mechanism having the following structure:

as shown in fig. 3 to 6, the spring plate 3 is connected to the fixed body 1 and the translational moving body 2 and enables the translational moving body 2 to be suspended on the fixed body 1. The design of the spring plate 3 enables the translational moving body 2 to be in a suspension shape so as to realize anti-shake control on the translational moving body 2.

At least one suspension wire 4, and the suspension wire 4 is connected to the stationary body 1 and the translational mobile body 2. And a concentricity holding structure 5 provided on the elastic sheet 3 and restricted to at least one suspension wire 4 so that the axis of the translational movement body 2 coincides with the optical axis a.

The suspension wire 4 and the elastic sheet 3 are mutually limited in position by utilizing the concentricity holding structure 5, and the axial lead of the translational moving body 2 is overlapped with the optical axis a under the synergistic action of the three, so that the drift of the translational moving body 2 in the direction of the optical axis in which the translational moving body 2 is linearly suspended can be eliminated, in addition, the hidden danger of the suspension wire being broken due to the impact of external force can be eliminated, and the hysteresis-free movement of a focusing assembly on the translational moving body is realized.

Preferably, the concentricity maintenance structure 5 of the present embodiment is disposed on at least one anti-torque portion 30 of the spring plate 3. Specifically, the torque resistant portion 30 of the present embodiment includes both end U-shaped portions 300, and an S-shaped portion 301 connected between the two U-shaped portions 300, and the concentricity holding structure 5 is provided on the S-shaped portion 301.

The openings of one U-shaped portion 300 are distributed inward along the X direction, and the openings of the other U-shaped portion 300 are distributed outward along the Y direction.

Specifically, each suspension wire 4 of the present embodiment includes a first wire portion 40 connected to the fixed body 1, and a second wire portion 41 connected to the translational moving body 2, respectively, one end of the first wire portion 40 away from the fixed body 1 and one end of the second wire portion 41 away from the translational moving body 2 are connected, and the concentricity holding structure 5 is limited to the first wire portion 40 and the second wire portion 41 of the suspension wire 4.

By using the first wire portion 40 and the second wire portion 41 to cooperate with the concentricity holding structure 5 to perform position restriction with two position points, the position restriction of the translational moving body 2 can be performed, and the drift of the translational moving body 2 can be eliminated, and at the same time, the coincidence of the axis line and the optical axis height of the translational moving body 2 can be ensured, so that better concentricity is obtained, and focusing accuracy and focusing efficiency are ensured.

Next, the first line portion 40 and the second line portion 41 are parallel to the optical axis a, respectively, and the first line portion 40, the second line portion 41, and the optical axis a are distributed in the same Z-direction plane distributed along the optical axis a, so as to perform both inner and outer restrictions.

The first wire part 40 and the second wire part 41 are parallel to each other.

Preferably, the number of suspension wires 4 may be set depending on the number of concentricity maintenance structures 5, for example: the number of one to four roots is even more, the number of the arranged roots is not too large, and the excessive number can cause the defects of increased cost, increased processing difficulty, reduced production efficiency and the like. Preferably, the suspension wires 4 of the present embodiment are four and uniformly distributed circumferentially about the optical axis a.

Of course, the concentricity maintenance structure 5 of the present embodiment is limited to the first wire portion 40 and the second wire portion 41 of the one to four suspension wires 4. Mode one: the first wire portion 40 and the second wire portion 41 limited to one suspension wire 4, mode two: the first wire portion 40 and the second wire portion 41 limited to the adjacent two suspension wires 4, modes three/four: the first wire portion 40 and the second wire portion 41 limited to three or four suspension wires 4.

As the most preferable scheme: the first wire portion 40 and the second wire portion 41 of the four suspension wires 4 are restricted to ensure uniform restriction in the circumferential direction.

Meanwhile, an end of the first wire part 40 away from the fixed body 1 and an end of the second wire part 41 away from the translational moving body 2 are connected by an intermediate wire part 42, the intermediate wire part 42 is a straight line, and the intermediate wire part 42 is transversely arranged above the anti-torque part 30 to play a limiting role.

Of course, as shown in FIGS. 7-9, the intermediate wire portion 42 herein may have a variety of deformed configurations, the first: the middle wire part 42 has a linear structure, and forms an inverted U shape with the first wire part 40 and the second wire part 41; second kind: the middle wire part 42 is in a straight line structure, and forms an H-shaped structure with the first wire part 40 and the second wire part 41, the middle wire part 42 is transversely arranged above or below the anti-torque part 30, and limiting convex points are arranged at the upper end parts of the first wire part 40 and the second wire part 41 to play a limiting role; third kind: the intermediate wire portion 42 has a curved wire structure, for example: any one of the W shape, the spiral shape and the V shape can meet the use requirement. The present embodiment is not exemplified for other deformed configurations of the intermediate wire portion 42.

Preferably, the first wire portion 40 and the second wire portion 41 of the present embodiment are both in a straight line structure, so as to ensure that the vertical suspension and the axial deformation are greatly deformed, and thus the use requirements cannot be met.

In addition, as shown in fig. 4 to 5, each first wire part 40 is respectively connected to an outer boss 20, the outer boss 20 is fixed on the outer circumferential surface of the translational moving body 2, each second wire part 41 is respectively connected to an inner boss 10, the inner bosses 10 are fixed on the inner circumferential surface of the fixed body 1, and one inner boss 10 corresponds to one outer boss 20 and is distributed at intervals. Further, an outer boss 20 is provided at each corner of the outer circumferential surface of the translational movement body 2, and an inner boss 10 is provided at each corner of the inner circumferential surface of the fixed body 1. The structure can utilize the space of the corner to the greatest extent, so that the whole structure is more compact, and the purpose of small volume is achieved.

The elastic sheet 3 of the present embodiment has the above-mentioned torsion-resistant portions 30 uniformly distributed around and circumferentially. To ensure that the resilient support is balanced.

The following is further described by way of example limited to one anti-torque portion 30 and to four anti-torque portions 30:

as shown in fig. 4 to 6, the concentricity holding structure 5 includes two limiting holes 50 provided on the primary torque resisting portion 30, the axes of the two limiting holes 50 being parallel to each other, the first wire portion 40 of one suspension wire 4 being inserted into one of the limiting holes 50 and the limiting hole 50 having a larger diameter than the outer diameter of the first wire portion 40, the second wire portion 41 of the one suspension wire 4 being inserted into the other limiting hole 50 and the limiting hole 50 having a larger diameter than the outer diameter of the second wire portion 41.

The concentricity holding structure 5 includes two limiting holes 50 provided on four anti-torque portions 30 and each of the anti-torque portions 30, a first wire portion 40 of one suspension wire 4 is inserted into one of the limiting holes 50 of the same anti-torque portion 30 and the limiting hole 50 has a larger diameter than the outer diameter of the first wire portion 40, and a second wire portion 41 of the one suspension wire 4 is inserted into the other limiting hole 50 of the anti-torque portion 30 and the limiting hole 50 has a larger diameter than the outer diameter of the second wire portion 41.

The pore size larger than the above value is a smaller value in micrometers.

When limited to two torque-resistant portions 30, it may be limited to two diagonal torque-resistant portions 30 or two adjacent torque-resistant portions 30, and this embodiment is not described in detail herein.

The limiting hole 50 may be any one or two of a round hole, a square hole and a diamond hole, and the two holes may be a round hole or another square hole, which is not exemplified herein.

Preferably, as shown in fig. 6, two reinforcing portions 52 are provided on the torque-resisting portion 30, and one of the above-described restricting holes 50 is provided on each reinforcing portion 52. The reinforcement 52 serves to form structural reinforcement against the torque portion 30.

By using the gap between the limiting hole 50 and the first line portion 40 and the gap between the limiting hole 50 and the second line portion 41, not only the requirement of the translational movement body 2 can be met, but also the translational movement body 2 can be limited in position, so that the coincidence of the axial lead and the optical axis of the translational movement body 2 can be ensured.

Preferably, as shown in fig. 4 to 5, one of the limiting holes 50 on the inner side of the four anti-torque portions 30 is uniformly circumferentially distributed about the optical axis a, and the other limiting hole 50 on the four anti-torque portions 30 is located one by one on the outer side of the one limiting hole 50 and is also uniformly circumferentially distributed about the optical axis a.

As shown in fig. 6, in order to realize the hysteresis-free movement of the translational moving body 2, the translational moving body 2 is suspended in the accommodating cavity of the fixed body 1, the elastic pieces 3 are respectively arranged around the translational moving body 2, one end of the elastic pieces is fixed on the translational moving body 2, and the other end of the elastic pieces is fixed on the fixed body 1; the suspension wire 4 is inverted in a U-shaped wire, is correspondingly configured with the elastic sheet 3, and has two ends penetrating through the limiting holes 50 of the elastic sheet 3, one end fixed on the translational moving body 2 and the other end fixed on the fixed body 1; the suspension combination of the focusing motor component can eliminate the drift of the optical axis direction of the linear suspension, obtain better concentricity through the positioning of the suspension spring plate, and eliminate the hidden trouble of disconnection of the suspension wire due to the impact of external force when combined with the suspension spring plate.

As shown in fig. 3-4 and fig. 10-11, regarding the anti-shake driving apparatus described above, the anti-shake driving apparatus according to this embodiment is an electromagnetic driving apparatus, and the structure thereof includes:

the first coil 22 is wound around the carrier 21, and of course, the first coil 22 may be one coil 22 around the carrier 21, or two to four independent coils 22 disposed on four sides of the carrier 21 in the circumferential direction, which can meet the focusing requirement in the Z direction. In this embodiment, a coil 22 is used around the circumference of the carrier 21.

Two to four magnets (23) are arranged outside the coils (22) and fixed on the inner circumferential side surface of the translational moving body (2), the two magnets (23) are oppositely distributed along the optical axis a when the two magnets (23) are arranged, the magnets (23) correspond to the corresponding outer side surface of one coil (22) which surrounds the whole circle, or correspond to the independent two to four coils (22), and when the coils (22) are electrified, the carrier (21) is driven to move in the Z direction by the Lorenter magnetic force matched with the coils (22) and the magnets (23). In this embodiment, four magnets 23 are selected.

The above-described driving may be defined as Z-direction driving.

In order to achieve the optical anti-shake effect, the present embodiment provides the following structure:

a second magnet 25 corresponding to each first magnet 23 and distributed outside the first magnet 23, wherein one first magnet 23 corresponds to at least one second magnet 25, and the second magnet 25 is fixed on the translational moving body 2;

the first coil 22, the first magnet 23 and the second magnet 25 work together to prolong the moving distance of the carrier 21 along the optical axis a and increase the pushing force of electromagnetic driving; the electromagnetic driving pushing force is increased, so that the embodiment has more excellent loading capacity.

Preferably, one magnet one 23 corresponds to two magnets two 25 which are distributed in parallel up and down, the upper surface of the magnet one 23 is flush with the upper surface of one magnet two 25 above the two magnets two 25, and the lower surface of the magnet one 23 is flush with the lower surface of the other magnet two 25, so as to ensure the compactness of the structure and the installation and fixation.

The upper and lower parts of the outer surface of the first magnet 23 are respectively attached to the surfaces of the corresponding inner surfaces of the translational moving body 2, so as to improve the fixing stability.

The inner surface of the magnet two 25 opposite to the magnet one 23 is adhered to the surface of the corresponding outer side surface of the translational moving body 2, so as to improve the fixing stability.

The first magnet 23 and the second magnet 25 corresponding to the first magnet are surrounded to form a coil accommodating space, and the number of the coil accommodating spaces is determined according to the number of the first magnets 23.

Namely, one magnet one 23 and one magnet two 25 form an L-shaped coil accommodating space;

one magnet one 23 and two magnets two 25 form a U-shaped coil accommodating space.

The coils two 26 are arranged in a plurality of corresponding coil accommodating spaces, the coils two 26 are fixed on the fixed body 1, and the coils two 26, the magnets one 23 and the magnets two 25 work together to increase the electromagnetic driving pushing weight of the translational moving body 2 in a plane perpendicular to the optical axis a.

The first magnet 23 and the second corresponding magnets 25 greatly improve electromagnetic thrust, can improve bearing performance, achieve the purpose of heavy load of the carrier 21, and can also prolong the Z-direction moving stroke of the carrier 21, achieve the purpose of long-distance movement and meet the purpose of long-distance focusing. Secondly, the first magnet 23 and the second corresponding magnets 25 can cooperate with the second coil 26 to make the translational moving body 2 do translational motion on a plane perpendicular to the optical axis a, so as to play a role in anti-shake.

As shown in fig. 11 to 14, a radial through hole 24 for communicating each coil accommodating space with the inside of the translational moving body 2 is formed in the circumferential direction of the translational moving body 2, an inner magnet positioning groove 240 with the groove bottom communicating with the inner hole of the corresponding radial through hole 24 and an outer magnet positioning groove 241 with the groove bottom communicating with the outer hole of the corresponding radial through hole 24 are formed in the inner circumferential side surface of the translational moving body 2, the first magnet 23 is fixed to the inner magnet positioning groove 240 and seals the inner hole of the radial through hole 24, the upper magnet 25 of the two parallel magnets 25 is fixed to the upper groove wall of the corresponding outer magnet positioning groove 241, the lower magnet 25 of the two parallel magnets 25 is fixed to the lower groove wall of the corresponding outer magnet positioning groove 241, and the upper groove wall and the lower groove wall are distributed in an up-down parallel manner.

As shown in fig. 11, the second coil 26 is located at the outer orifice of the corresponding radial through hole 24.

The design of the radial through holes 24 allows the magnetic force to be enhanced, for example, electromagnetic thrust in three directions of XYZ.

Further, as shown in fig. 11 to 14, a clamping plate 242 is provided at each of the upper and lower end surfaces of each side portion of the translational moving body 2, and the inner side of each clamping plate 242 is extended radially toward the center of the translational moving body 2 to form the above-mentioned inner magnet positioning groove 240 between the upper and lower surfaces of the inner sides of the two clamping plates 242, and the outer side of each clamping plate 242 opposite to the inner side is extended to the outside of the translational moving body 2 and the above-mentioned outer magnet positioning groove 241 is formed between the upper and lower surfaces of the outer sides of the two clamping plates 242.

By utilizing the design of the two clamping plates 242, the two clamping plates can be used for fixing the first magnet 23 and the second magnet 25, so that the assembly difficulty is greatly reduced, and the production efficiency and the production capacity are greatly improved.

Preferably, each of the inner peripheral side surfaces of the translational moving body 2 is provided with a vertical positioning groove 27, and the first magnets 23 are inserted into the vertical positioning grooves 27 one by one, and simultaneously, two clamping plates 242 which are parallel to each other seal the upper notch and the lower notch of the vertical positioning groove 27 and press the first magnets 23. Next, the side of the vertical positioning groove 27 near the optical axis a has an opening communicating with the inside of the translational moving body 2, so that the first magnet 23 and the first coil 22 interact to realize electromagnetic driving. The vertical positioning groove 27 can form the pre-positioning for the first magnet 23 so as to improve the fixing firmness of the first magnet 23 and position the first magnet 23 in the length and thickness directions.

The clamping plate 242 may be fixed to the translational movement body 2 by welding, and may be fixed to the translational movement body 2 by adhesive.

As shown in fig. 3 to 4 and 11, each of the second coils 26 is fixed to a bobbin 260, and the bobbin 260 is fixed to the fixed body 1.

The four corners of the fixing body 1 are respectively provided with the bosses 11, the coil frames 260 are fixed on the two adjacent bosses 11, and the coil frames 260 are overhead by the bosses 11, so that the coil frames can be conveniently assembled and fixed to improve the production efficiency.

The boss 11 is right angle structure, and the interior right angle face of a boss 11 connects an interior boss 10, and the height of boss 11 is higher than the height of interior boss 10 to improve the joint strength with the shell.

The housing 12 is provided on the stationary body 1, and the translational movement body 2 and the carrier 21 are built in a chamber formed by the stationary body 1 and the housing 12. The outer right angle surface of the boss 11 and the outer side surface of the coil former 260 are fitted with the inner circumferential surface of the housing 12, and fixedly connected with each other by glue.

The first magnet 23 is a focusing motor driving magnet, the second two magnets 25 are optical anti-shake driving magnets, the three magnets form a coil accommodating space for accommodating the first coil, the combination of the first magnet and the second magnet forms the strongest magnetic field in the coil accommodating space, larger electromagnetic force is obtained, and the translational moving body 2 is pushed to do translational movement perpendicular to the optical axis.

The first magnet 23 and the second magnet 25 are combined and respectively placed around the translational moving body 2 to achieve the purpose of X-Y plane movement. Meanwhile, the magnet combination of the invention enhances the magnetic field towards the first focusing coil, so that the pushing weight of the carrier 21 is increased, the electromagnetic thrust of the voice coil motor and the OIS anti-shake mechanism is enhanced, the performance of the load and long-distance movement of the voice coil motor and the OIS anti-shake mechanism is better than that of other optical anti-shake mechanisms, the production process is greatly simplified, and the cost is reduced.

Example two

The working principle and structure of this embodiment are basically the same as those of the first embodiment, and the different structures are as follows: as shown in fig. 16 to 17, the concentricity holding structure 5 includes two restriction grooves 51 provided on at least one of the torque-resisting portions 30, the first wire portion 40 of one suspension wire 4 is inserted in one of the restriction grooves 51 and the inner diameter of the restriction groove 51 is larger than the outer diameter of the first wire portion 40, and the second wire portion 41 of the one suspension wire 4 is inserted in the other restriction groove 51 and the inner diameter of the restriction groove 51 is larger than the outer diameter of the second wire portion 41. The notches of the two limiting grooves 51 on the same torque resisting part 30 are oppositely arranged or staggered.

Example III

Based on the first embodiment and the second embodiment, as shown in fig. 2, the present embodiment provides a lens driving apparatus having the first embodiment or the second embodiment.

Example IV

Based on the third embodiment, as shown in fig. 18, the present embodiment provides an image pickup apparatus having the lens driving apparatus described in the third embodiment. An imaging device such as an imaging module.

Example five

Based on the fourth embodiment, as shown in fig. 19, this embodiment provides an electronic apparatus having the image pickup device described in the fourth 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 invention. 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 invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An optical anti-shake driving mechanism comprising:

a fixed body (1) with a frame structure;

a translation moving body (2) which is located in the fixed body (1) and moves in translation in a plane perpendicular to the optical axis (a);

the first coil (22) is fixed on the circumference of the carrier (21);

a first magnet (23) which is fixed to the translational moving body (2) and cooperates with the first coil (22) to drive the carrier (21) to move along the optical axis (a); the mechanism is characterized by further comprising:

a second magnet (25) which is fixed on the translational moving body (2) and each first magnet (23) corresponds to at least one second magnet (25); the first coil (22), the first magnet (23) and the second magnet (25) work together to prolong the moving distance of the carrier (21) along the optical axis (a) and increase the pushing force of electromagnetic driving;

the coil accommodating space is formed by a first magnet (23) and a second magnet (25) corresponding to the first magnet;

a second coil (26), wherein each coil accommodating space is provided with a second coil (26) respectively, the second coil (26) is fixed on the fixed body (1), and the second coil (26), the first magnet (23) and the second magnet (25) act together to increase the electromagnetic driving pushing force of the translational moving body (2) in a plane perpendicular to the optical axis (a);

the number of the magnets I (23) is two to four, and the magnets I (23) are fixed on the inner circumferential surface of the translation moving body (2); two magnets (25) which are distributed up and down are corresponding to each magnet (23), and the two magnets (25) corresponding to each magnet (23) are fixed on the outer circumferential surface of the translation moving body (2).

2. The optical anti-shake driving mechanism according to claim 1, characterized in that a radial through hole (24) for communicating each coil accommodating space with the inside of the translational moving body (2) is arranged in the circumferential direction of the translational moving body (2), an inner hole of each radial through hole (24) corresponds to one magnet one (23), and two magnets two (25) corresponding to the magnet one (23) are distributed at an outer hole of the radial through hole (24).

3. The optical anti-shake driving mechanism according to claim 2, characterized in that an inner magnet positioning groove (240) with the groove bottom communicating with the inner hole of the corresponding radial through hole (24) is respectively provided on the inner circumferential side surface of the translational moving body (2), and an outer magnet positioning groove (241) with the groove bottom communicating with the outer hole of the corresponding radial through hole (24) is provided on the outer circumferential surface of the translational moving body (2), a magnet one (23) is fixed in each inner magnet positioning groove (240), and a magnet two (25) is respectively provided on the upper side groove wall and the lower side groove wall of each outer magnet positioning groove (241).

4. An optical anti-shake driving mechanism according to claim 3, wherein a clamp plate (242) is provided at each of upper and lower end surfaces of each side portion of the translational movement body (2), an inner side of each clamp plate (242) is extended radially toward a center of the translational movement body (2) to form the above-mentioned inner magnet positioning groove (240) between upper and lower surfaces of the two clamp plates (242) which are opposite to each other, an outer side of each clamp plate (242) which is opposite to the inner side is extended to an outside of the translational movement body (2), and the above-mentioned outer magnet positioning groove (241) is formed between upper and lower surfaces of the two clamp plates (242) which are opposite to each other.

5. The optical anti-shake driving mechanism according to claim 4, wherein each of the inner peripheral side surfaces of the translational movement body (2) is provided with a vertical positioning groove (27), the first magnets (23) are inserted into the vertical positioning grooves (27) one by one, and simultaneously, two clamping plates (242) parallel to each other seal the upper notch and the lower notch of the vertical positioning groove (27) and press the first magnets (23).

6. The optical anti-shake driving mechanism according to claim 1, wherein each of the second coils (26) is fixed to a bobbin (260), and the bobbins (260) are fixed to the fixed body (1).

7. The optical anti-shake driving mechanism according to claim 6, wherein bosses (11) are provided at four corners of the fixed body (1), respectively, and a bobbin (260) is fixed to two adjacent bosses (11), the bobbin (260) being suspended by the bosses (11).

8. The optical anti-shake driving mechanism according to claim 1, wherein the fixed body (1) and the translational movement body (2) are connected by a suspension mechanism capable of coinciding an axial line of the translational movement body (2) and the optical axis (a).

9. The optical anti-shake driving mechanism according to claim 8, wherein the suspension mechanism comprises a spring plate (3) connected to the fixed body (1) and the translational body (2), a plurality of suspension wires (4) connected to the fixed body (1) and the translational body (2), and a concentricity holding structure (5) limited to the suspension wires (4) is provided on the spring plate (3).

10. An optical anti-shake driving mechanism according to claim 9, wherein the concentricity-maintaining structure (5) is limited to the anti-torque portion (30) of the spring plate (3).

11. The optical anti-shake driving mechanism according to claim 10, wherein each suspension wire (4) includes a first wire portion (40) connected to the fixed body (1) and a second wire portion (41) connected to the translational movement body (2), respectively, an end of the first wire portion (40) remote from the fixed body (1) and an end of the second wire portion (41) remote from the translational movement body (2) are connected, and the concentricity holding structure (5) is limited to the first wire portion (40) and the second wire portion (41) of the suspension wire (4).

12. The optical anti-shake driving mechanism according to claim 11, wherein the concentricity holding structure (5) includes two limiting holes (50) provided on the anti-torque portion (30), a first wire portion (40) of one suspension wire (4) is inserted in one of the limiting holes (50) and the limiting hole (50) has a larger aperture than an outer diameter of the first wire portion (40), and a second wire portion (41) of the one suspension wire (4) is inserted in the other limiting hole (50) and the limiting hole (50) has a larger aperture than an outer diameter of the second wire portion (41).

13. A lens driving device having the optical anti-shake driving mechanism according to any one of claims 1 to 12.

14. An imaging device comprising the lens driving device according to claim 13.

15. An electronic apparatus comprising the image pickup device according to claim 14.