CN113126231A

CN113126231A - Optical anti-shake drive mechanism, drive and image pickup device, and electronic apparatus

Info

Publication number: CN113126231A
Application number: CN202110470284.0A
Authority: CN
Inventors: 王在伟
Original assignee: New Shicoh Technology Co Ltd
Current assignee: New Shicoh Technology Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-07-16
Anticipated expiration: 2041-04-28
Also published as: CN113126231B

Abstract

The invention relates to an optical anti-shake drive mechanism, a drive and image pickup device, and an electronic apparatus. It has solved the technical problem such as prior art thrust load power is little and apart from short. The optical anti-shake driving mechanism comprises a fixed body; a translational moving body which is located inside the stationary body and which is translationally moved in a plane perpendicular to the optical axis; the first coil is fixed in the circumferential direction of the carrier; the first magnets are fixed on the translational moving body and matched with the first coils so as to drive the carrier to move along the optical axis; a plurality of magnets II fixed on the translational moving body, wherein each magnet corresponds to at least one magnet II; 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 is fixed on the fixed body. The invention has the advantages that: the weight of the carrier is increased, and long-distance focusing is achieved.

Description

Optical anti-shake drive mechanism, drive and image pickup 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

When a camera takes a picture, in order to improve the quality of a high-pixel image, the camera needs to be prevented from shaking while focusing, so that an optical anti-shake mechanism is generally applied to a high-grade camera. Optical anti-shake mechanisms for miniature cameras in cellular phones are also becoming popular. With the application of ultrahigh pixel image sensor chips and oversized lenses to mobile phone camera modules, the technical development of miniature heavy-duty focusing motors becomes more and more important.

When the suspension wire OIS focuses on the translational motion of the motor, a magnet coil is adopted for anti-shake at present, however, the electromagnetic thrust of the current anti-shake mechanism is small, including the electromagnetic thrust in the three directions of XYZ, which results in the defects of small moving load force for driving the anti-shake mechanism, short focusing motion distance in the optical axis direction, and the like.

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 purpose, the invention adopts the following technical scheme:

this optics anti-shake actuating mechanism includes:

the fixing body is of a frame type structure;

a translational moving body which is located inside the stationary body and which is translationally moved in a plane perpendicular to the optical axis;

the first coil is fixed in the circumferential direction of the carrier;

the first magnets are fixed on the translational moving body and matched with the first coils so as to drive the carrier to move along the optical axis;

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

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

and the second coil is arranged in each coil accommodating space and fixed on the fixed body, and the second coil, the first magnet and the second magnet act together to increase the electromagnetic driving thrust force of the translational moving body in a plane perpendicular to the optical axis.

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

In the optical anti-shake driving mechanism, each magnet one corresponds to two magnets two which are parallel to each other in the vertical direction, and the two magnets two corresponding to each magnet one are fixed to the outer circumferential surface of the translational moving body.

In the optical anti-shake driving mechanism, a radial through hole for communicating each coil accommodating space with the inside of the translational moving body is arranged in the circumferential direction of the translational moving body, an inner orifice of each radial through hole corresponds to one magnet I, and two magnets II corresponding to the magnet I are distributed at outer orifices of the radial through holes.

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

In the optical anti-shake driving mechanism, a clamping plate is respectively arranged on the upper end surface and the lower end surface of each side part of the translational moving body, the inner side of each clamping plate radially extends towards the center of the translational moving body so as to form the inner magnet positioning groove between the upper surface and the lower surface opposite to the inner side of the two clamping plates, the outer side of each clamping plate opposite to the inner side extends out of the translational moving body and the outer magnet positioning groove is formed between the upper surface and the lower surface opposite to the outer side of the two clamping plates.

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

In the optical anti-shake drive mechanism, each of the two coils is fixed to a coil frame, and the coil frame is fixed to a fixing body.

In the optical anti-shake drive mechanism, bosses are provided at four corners of the fixed body, respectively, and the bobbin is fixed to two adjacent bosses, and is suspended by the bosses.

In the optical anti-shake drive mechanism described above, the fixed body and the translationally moving body are connected by a suspension device capable of causing the axis line of the translationally moving body and the optical axis to coincide.

In the optical anti-shake driving mechanism, the suspension device includes a spring plate connected to the fixed body and the translational moving body, and a plurality of suspension lines connected to the fixed body and the translational moving body, and the spring plate is provided with a concentricity retaining structure restricted on the suspension lines.

In the optical anti-shake driving mechanism, the concentricity retaining structure is limited to the anti-torque part of the elastic sheet.

In the optical anti-shake drive mechanism described above, each of the suspension wires includes a first wire portion connected to the fixed body and a second wire portion connected to the translationally moving body, an end of the first wire portion remote from the fixed body and an end of the second wire portion remote from the translationally moving body being connected, and the concentricity retaining structure is restricted to the first wire portion and the second wire portion of the suspension wires.

In the optical anti-shake drive mechanism described above, the concentricity retaining structure includes two restricting holes provided on the torque resisting portion, the first wire portion of one suspension wire is inserted in one of the restricting holes and the restricted aperture is larger than the outer diameter of the first wire portion, and the second wire portion of the one suspension wire is inserted in the other restricting hole and the restricted aperture is larger than the 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 image pickup device, which is provided with the lens driving device.

The application provides an electronic device with the camera device.

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

the first magnet is a focusing motor driving magnet, the two second magnets are optical anti-shake driving magnets, the three magnets form a coil accommodating space for accommodating the first coil, and the combination of the first magnet and the second magnet forms a strongest magnetic field in the coil accommodating space, so that larger electromagnetic force is obtained, the translational moving body is pushed to perform translational motion vertical to an optical axis, and the load capacity 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 motion, and meanwhile, the magnetic field of the first magnet towards the focusing coil is enhanced, so that the thrust of the carrier is increased. The performance of load and long-distance movement better than that of other optical anti-shake mechanisms is obtained, the reliability can be greatly improved, the production process is simplified, and the cost is reduced.

The suspension lines and the elastic sheets are mutually limited in position by utilizing the concentricity retaining structure, and under the synergistic action of the concentricity retaining structure, the axial lead of the translational moving body and the optical axis can be coincided, the drifting of the linear suspended optical axis direction of the translational moving body can be eliminated, in addition, the hidden danger of the disconnection of the suspension lines impacted by external force can be eliminated, and the non-hysteresis motion of the focusing assembly on the translational moving body is realized.

Drawings

Fig. 1 is a schematic structural diagram of an anti-shake driving device provided by the present invention.

Fig. 2 is a schematic structural diagram of a stereoscopic anti-shake driving device provided by the invention.

Fig. 3 is a schematic view of a local explosion structure of the anti-shake driving device provided by the present invention.

Fig. 4 is a schematic diagram of an explosion structure of the anti-shake driving apparatus provided by the present invention.

Fig. 5 is an enlarged schematic view of a portion a in fig. 3.

Fig. 6 is a schematic structural view of the torque-resisting part and the suspension wire in a matched state.

Fig. 7 is a schematic view of a second structure of the suspension wire provided by the invention.

Fig. 8 is a schematic view of a third structure of the suspension wire provided by the present invention.

Fig. 9 is a schematic view of a fourth structure of the suspension wire provided by the present invention.

Fig. 10 is a schematic sectional view taken along line a-a in fig. 1.

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

Fig. 12 is a schematic perspective view of the translational motion body of the present invention, wherein clamping plates are disposed on two end surfaces of one side portion of the translational motion body.

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

FIG. 14 is a schematic sectional view taken along line B-B in FIG. 13.

FIG. 15 is a schematic diagram of a two-magnet and coil arrangement according to the present invention.

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

FIG. 17 is a schematic diagram of a third structure of the present invention.

Fig. 18 is a schematic structural diagram of the fourth embodiment of the present invention.

Fig. 19 is a schematic structural diagram of the fifth embodiment of 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 frame 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 retaining structure 5, a limiting hole 50, a limiting groove 51, a reinforcing portion 52 and an optical axis a.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the optical anti-shake driving mechanism includes a fixed body 1 in a frame structure for carrying a translational moving body 2 for translational movement.

And a translational moving body 2 which is located within the fixed body 1 and is in translational motion in a plane perpendicular to the optical axis a. A carrier 21 is mounted in the translatory displacement body 2, the carrier 21 being suspended in the translatory displacement body 2, and optical components, such as lenses or the like, 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 the translational movement body 2 from drifting in translation in a plane perpendicular to the optical axis and to prevent the suspension wires from being disconnected due to force, the present embodiment is provided with an optical anti-shake suspension mechanism having the following structure:

as shown in fig. 3-6, the elastic sheet 3 is connected to the fixed body 1 and the translational movement body 2 and enables the translational movement body 2 to be suspended on the fixed body 1. The design of the spring plate 3 makes the translational motion body 2 in a suspended state, so as to realize anti-shake control of the translational motion body 2.

And a suspension wire 4, at least one, and the suspension wire 4 is connected to the fixed body 1 and the translationally moving body 2. And a concentricity retaining structure 5 provided on the spring plate 3 and constrained to the at least one suspension wire 4 such that the axis line of the translationally moving body 2 coincides with the optical axis a.

The suspension lines 4 and the elastic pieces 3 are mutually limited in position by the concentricity retaining structure 5, and under the synergistic action of the concentricity retaining structure and the elastic pieces, the axial lead of the translational moving body 2 and the optical axis a can be coincided, the drifting of the linear suspension of the translational moving body 2 in the direction of the optical axis can be eliminated, in addition, the hidden danger of the disconnection of the suspension lines under the impact of external force can be eliminated, and the non-hysteresis motion of the focusing assembly on the translational moving body is realized.

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

One U-shaped portion 300 opening is distributed inwardly along the X-direction and the other U-shaped portion 300 opening is distributed outwardly along the Y-direction.

Specifically, each suspension wire 4 of the present embodiment comprises a first wire portion 40 connected to the fixed body 1 and a second wire portion 41 connected to the translationally moving body 2, the end of the first wire portion 40 remote from the fixed body 1 and the end of the second wire portion 41 remote from the translationally moving body 2 being connected, the concentricity retaining structure 5 being confined to the first wire portion 40 and the second wire portion 41 of the suspension wire 4.

By using the first line part 40 and the second line part 41 in cooperation with the concentricity retaining structure 5 to perform position limitation at two position points, it is possible to perform position limitation on the translationally moving body 2 and to eliminate drift of the translationally moving body 2, and at the same time, it is possible to ensure that the axial line and the optical axis of the translationally moving body 2 are highly coincident, to obtain more excellent concentricity and to ensure focusing accuracy and focusing efficiency.

Next, the first line portion 40 and the second line portion 41 are respectively parallel to the optical axis a, 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 the limitation of both inside and outside.

The first line portion 40 and the second line portion 41 are parallel to each other.

Preferably, the number of suspension wires 4 may be set in accordance with the number of concentricity retaining structures 5, for example: the number of the one to four is even more, the number of the arrangement is not too large, the cost is increased and the processing difficulty is increased due to too large number, and the production efficiency is reduced. Preferably, the suspension wires 4 of the present embodiment are four and uniformly distributed circumferentially around the optical axis a.

Of course, the concentricity retaining structure 5 of the present embodiment is limited to the first line portion 40 and the second line portion 41 of one to four suspension lines 4. The first method is as follows: the first wire portion 40 and the second wire portion 41 restricted to one suspension wire 4, manner two: the first wire portion 40 and the second wire portion 41, which are restricted to the adjacent two suspension wires 4, in a third/fourth manner: a first wire portion 40 and a 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 line portion 40 away from the fixed body 1 and an end of the second line portion 41 away from the translationally moving body 2 are connected by a middle line portion 42, the middle line portion 42 is a straight line, and the middle line portion 42 is disposed laterally above the torque resisting portion 30 to perform a stopper function.

Of course, as shown in FIGS. 7-9, the medial line portion 42 may have a variety of alternative configurations, a first: the intermediate line portion 42 has a linear structure, and is formed in an inverted U-shape with the first line portion 40 and the second line portion 41; and the second method comprises the following steps: the middle line part 42 is a straight line structure, forms an H-shaped structure with the first line part 40 and the second line part 41, the middle line part 42 is transversely arranged above or below the torque resisting part 30, and limiting salient points are arranged at the upper end parts of the first line part 40 and the second line part 41 to play a role of limiting; and the third is that: the centerline portion 42 is a curved line structure, such as: any one of the W shape, the spiral shape and the V shape can meet the use requirement. This embodiment is not overly exemplified with respect to other alternative configurations of the middle line portion 42.

Preferably, the first line part 40 and the second line part 41 of the present embodiment are both in a straight line structure to ensure vertical suspension and large axial deformation, which may result in failure to meet the use requirements.

In addition, as shown in fig. 4 to 5, each first line portion 40 is connected to one outer boss 20, the outer bosses 20 are fixed to the outer circumferential surface of the translationally moving body 2, each second line portion 41 is connected to one inner boss 10, the inner bosses 10 are fixed to the inner circumferential surface of the fixed body 1, and one inner boss 10 corresponds to one outer boss 20 and is spaced apart therefrom. Further, an outer boss 20 is provided at each corner of the outer circumferential surface of the translationally moving 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 part to the maximum extent, so that the whole structure is more compact, and the aim of small volume is fulfilled.

The elastic sheet 3 of the present embodiment has the torque resisting portions 30 distributed at four positions and uniformly distributed circumferentially. To ensure the resilient support is balanced.

As further illustrated below, the limitation to one anti-torque portion 30 and the limitation to four anti-torque portions 30 are taken as examples:

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

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

The above pore size greater values are smaller values in microns.

When the number of the anti-torque portions 30 is two, the number of the anti-torque portions 30 may be two, which are diagonally opposite, or two adjacent anti-torque portions 30 may be used, and the detailed description of the embodiment is omitted here.

The limiting hole 50 may be any one or two combinations of a circular hole, a square hole and a diamond hole, and when the two combinations are combined, the two combinations may be a circular hole and another square hole, which is not illustrated herein.

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

By utilizing the gap between the limiting hole 50 and the first line part 40 and the gap between the limiting hole 50 and the second line part 41, not only the requirement of the translational movement body 2 can be satisfied, but also the position of the translational movement body 2 can be limited, so as to ensure that the axial line of the translational movement body 2 coincides with the optical axis.

Preferably, as shown in fig. 4 to 5, the inner limiting holes 50 of the four torque resisting parts 30 are circumferentially and uniformly distributed around the optical axis a, and the other limiting holes 50 of the four torque resisting parts 30 are located one by one outside the one limiting hole 50 and are also circumferentially and uniformly distributed around the optical axis a.

As shown in fig. 6, in order to realize the movement of the translational mobile body 2 without hysteresis, the translational mobile body 2 is suspended in the accommodating cavity of the fixed body 1, the elastic pieces 3 are respectively arranged around the translational mobile body 2, one end of each elastic piece is fixed on the translational mobile body 2, and the other end of each elastic piece is fixed on the fixed body 1; the suspension wire 4 is inverted in a U-shaped wire and is configured corresponding to the elastic sheet 3, two ends of the suspension wire penetrate through the limiting holes 50 of the elastic sheet 3, one end of the suspension wire is fixed on the translational moving body 2, and the other end of the suspension wire is fixed on the fixed body 1; the suspension combination of the focusing motor assembly can eliminate the drift of the linear suspension in the optical axis direction, obtains better concentricity by positioning the suspension elastic sheet, and can eliminate the hidden trouble of the suspension line disconnection caused by the impact of external force by combining the suspension elastic sheet and the suspension elastic sheet.

As shown in fig. 3-4 and fig. 10-11, regarding the anti-shake driving device, the anti-shake driving device of the present embodiment is an electromagnetic driving device, and the structure thereof includes:

the first coil 22 is wound around the circumference of the carrier 21, but the first coil 22 may be a first coil 22 wound around the circumference of the carrier 21, or two to four independent coils 22 arranged on four outer circumferential sides of the carrier 21, and both of the two ways can satisfy the focusing requirement in the Z direction. In the present embodiment, a first coil 22 is selected to surround the circumference of the carrier 21.

And the first magnets 23 are two to four and distributed outside the first coil 22 and fixed on the inner circumferential side surface of the translational moving body 2, the two first magnets 23 are distributed oppositely by the optical axis a when the two first magnets 23 are arranged, the first magnets 23 correspond to the corresponding outer side surface of a full-circle surrounding first coil 22 or correspond to two to four independent first coils 22, and when the first coils 22 are electrified, the first magnets 22 and the first magnets 23 are driven by Lorentz magnetic force matched with each other so that the carrier 21 moves in the Z direction. In this embodiment, four magnets 23 are selected.

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

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

two magnets 25 corresponding to each of the first magnets 23 and distributed outside the first magnets 23, one first magnet 23 corresponding to at least one second magnet 25, the second magnets 25 being fixed on the translational moving body 2;

the first coil 22, the first magnet 23 and the second magnet 25 jointly act to prolong the moving distance of the carrier 21 along the optical axis a and increase the pushing force of the electromagnetic drive; the electromagnetic driving thrust force is increased, so that the embodiment has more excellent load-carrying capacity.

Preferably, one magnet I23 corresponds to two magnets II 25 which are distributed in parallel up and down, the upper surface of the magnet I23 is flush with the upper surface of one magnet II 25 above the two magnets II 25, and the lower surface of the magnet I23 is flush with the lower surface of the other magnet II 25, so that the structure is compact, and the mounting and the fixing are ensured.

The upper and lower portions of the outer surface of the first magnet 23 are fitted to the surfaces of the corresponding inner side surfaces of the translationally moving body 2 to improve the fixing stability.

The second magnet 25 is conformed to the surface of the corresponding outer side surface of the translational moving body 2 relative to the inner surface of the first magnet 23 to improve the fixing stability.

One magnet 23 and the corresponding magnet 25 surround to form a coil accommodating space, and the number of the coil accommodating space is determined according to the number of the magnets 23.

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

the first magnet 23 and the second magnet 25 form a U-shaped coil accommodating space.

And the second coil 26 is provided with a plurality of coils and is positioned in the corresponding coil accommodating space, 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 cooperate to increase the electromagnetic driving thrust force of the translational moving body 2 in a plane vertical to the optical axis a.

The first magnet 23 and the second magnet 25 greatly improve the electromagnetic thrust, can improve the bearing performance, and achieve the purpose of heavy load of the carrier 21, and meanwhile, the Z-direction moving stroke of the carrier 21 can be prolonged, so that the purpose of long-distance movement is achieved, and the purpose of long-distance focusing is met. Secondly, the first magnet 23 and the corresponding second magnets 25 can cooperate with the second coil 26 to make the translational moving body 2 perform translational motion on a plane perpendicular to the optical axis a, so as to achieve the anti-shake purpose.

As shown in fig. 11 to 14, radial through holes 24 communicating each coil accommodating space with the inside of the translatory moving body 2 are provided in the circumferential direction of the translatory moving body 2, inner magnet positioning grooves 240 communicating the groove bottoms with the inner apertures of the respective radial through holes 24 and outer magnet positioning grooves 241 communicating the groove bottoms with the outer apertures of the respective radial through holes 24 are provided in the inner circumferential side surfaces of the translatory moving body 2, respectively, a magnet one 23 is fixed to the inner magnet positioning groove 240 and closes the inner apertures of the radial through holes 24, upper magnets two 25 of two magnets two 25 parallel to each other are fixed to the upper side groove walls of the respective outer magnet positioning grooves 241, lower magnets two 25 of two magnets two 25 parallel to each other are fixed to the lower side groove walls of the respective outer magnet positioning grooves 241, and the upper side groove walls and the lower side groove walls are distributed in parallel up and down.

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

The radial through hole 24 is designed such that magnetic force is enhanced, for example, electromagnetic thrust in three directions of XYZ.

Further, as shown in fig. 11 to 14, a clamp plate 242 is provided on each of upper and lower end surfaces of each side portion of the translationally moving body 2, an inner side of each clamp plate 242 is extended radially toward the center of the translationally moving body 2 to form the above-mentioned inner magnet positioning groove 240 between the upper and lower surfaces opposing to the inner side of the clamp plate 242, and an outer side of each clamp plate 242 opposing to the inner side is extended to the outside of the translationally moving body 2 and the above-mentioned outer magnet positioning groove 241 is formed between the upper and lower surfaces opposing to the outer side of the clamp plate 242.

By utilizing the design of the two clamping plates 242, the first magnet 23 can be fixed, and the second magnet 25 can be fixed, 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 translationally moving body 2 is provided with a vertical positioning groove 27, and the magnets one 23 are inserted into the vertical positioning grooves 27 one by one, and at the same time, the two parallel clamping plates 242 close the upper and lower notches of the vertical positioning grooves 27 and press the magnets one 23. Secondly, the side of the vertical positioning slot 27 close to the optical axis a has an opening communicated with the interior of the translational mobile body 2, so that the magnet I23 and the coil I22 can interact to realize electromagnetic driving. Vertical constant head tank 27 it can form the prepositioning to the magnetite 23 thereby improves the fixed firmness of magnetite 23 to and the location in the length and the thickness direction of magnetite 23.

The clamp plate 242 may be fixed to the translationally moving body 2 by welding, or may be fixed to the translationally moving body 2 by an adhesive.

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

Bosses 11 are respectively provided at four corners of the fixing body 1, the bobbin 260 is fixed on two adjacent bosses 11, and the bobbin 260 is suspended by the bosses 11, which can facilitate assembly and fixation to improve production efficiency.

The boss 11 is of a right-angle structure, the inner right-angle surface of one boss 11 is connected with an inner boss 10, and the height of the boss 11 is higher than that of the inner boss 10, so that the connection strength between the boss 11 and the shell is improved.

The fixed body 1 is provided with a housing 12, and the translationally-moving body 2 and the carrier 21 are built in a chamber formed by the fixed body 1 and the housing 12. The outer right-angle surface of the boss 11 and the outer side surface of the coil frame 260 are matched with the inner circumferential surface of the shell 12 and fixedly connected by glue.

The first magnet 23 is a focusing motor driving magnet, the second magnets 25 are optical anti-shake driving magnets, the three magnets form a coil accommodating space for accommodating the first coil, and the combination of the first magnet and the second magnet forms a strongest magnetic field in the coil accommodating space to obtain larger electromagnetic force so as to push the translational moving body 2 to perform translational motion vertical to the optical axis.

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

Example two

The working principle and structure of the 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 retaining structure 5 includes two restraining grooves 51 provided on at least one torque resisting portion 30, a first wire portion 40 of one suspension wire 4 is inserted in one of the restraining grooves 51 and an inner diameter of the restraining groove 51 is larger 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 restraining groove 51 and an inner diameter of the restraining groove 51 is larger than an outer diameter of the second wire portion 41. The two limiting grooves 51 on the same torque resisting part 30 are oppositely arranged or arranged oppositely 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 four

Based on embodiment three, as shown in fig. 18, this embodiment provides an image pickup apparatus having the lens driving apparatus described in embodiment three. The image pickup device is, for example, an image pickup module.

EXAMPLE five

Based on the fourth embodiment, as shown in fig. 19, the present 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 merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. Optical anti-shake drive mechanism includes:

the fixing body (1) is of a frame type structure;

a translational moving body (2) which is located within the fixed body (1) and which is translationally moved in a plane perpendicular to the optical axis (a);

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

the magnets (23) are fixed on the translational moving body (2) and are matched with the coils (22) so as to drive the carrier (21) to move along the optical axis (a); it is characterized in that the mechanism further comprises:

two magnets (25) which are fixed on the translational moving body (2) and each magnet one (23) corresponds to at least one magnet two (25); the first coil (22), the first magnet (23) and the second magnet (25) jointly act to enable the moving distance of the carrier (21) along the optical axis (a) to be prolonged and the pushing force of the electromagnetic drive to be increased;

a coil accommodating space formed by a magnet I (23) and a magnet II (25) corresponding to the magnet I;

and a second coil (26), wherein each coil accommodating space is provided with a second coil (26) respectively, the second coils (26) are fixed on the fixed body (1), and the second coils (26), the first magnets (23) and the second magnets (25) jointly act to increase the electromagnetic driving thrust gravity of the translational moving body (2) in a plane perpendicular to the optical axis (a).

2. The optical anti-shake drive mechanism according to claim 1, wherein the first magnets (23) are two to four and the first magnets (23) are fixed to an inner circumferential surface of the translationally moving body (2).

3. The optical anti-shake drive mechanism according to claim 2, wherein each first magnet (23) corresponds to two magnets (25) distributed vertically, and the two magnets (25) corresponding to each first magnet (23) are fixed to the outer circumferential surface of the translationally moving body (2).

4. Optical anti-shake drive mechanism according to claim 1, 2 or 3, wherein radial through holes (24) are provided in the circumferential direction of the translator (2) to communicate each coil-accommodating space with the interior of the translator (2), an inner opening 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 outer openings of the radial through holes (24).

5. Optical anti-shake actuator according to claim 4, wherein inner magnet positioning grooves (240) having groove bottoms communicating with inner openings of the corresponding radial through holes (24) are provided on the inner circumferential side of the translationally moving body (2), respectively, and outer magnet positioning grooves (241) having groove bottoms communicating with outer openings of the corresponding radial through holes (24) are provided on the outer circumferential side of the translationally moving body (2), one magnet one (23) is fixed in each inner magnet positioning groove (240), and one magnet two (25) is provided on the upper and lower groove walls of each outer magnet positioning groove (241), respectively.

6. The optical anti-shake drive mechanism according to claim 5, wherein a clamp plate (242) is provided on each of upper and lower end surfaces of each side portion of the translationally moving body (2), an inner side of each clamp plate (242) is extended radially toward the center of the translationally moving body (2) to form the inner magnet positioning groove (240) between the upper and lower surfaces opposite to the inner side of the clamp plates (242), an outer side of each clamp plate (242) opposite to the inner side is extended to the outside of the translationally moving body (2) and the outer magnet positioning groove (241) is formed between the upper and lower surfaces opposite to the outer side of the clamp plates (242).

7. The optical anti-shake driving mechanism according to claim 6, wherein vertical positioning grooves (27) are formed in each of the inner peripheral side surfaces of the translationally moving body (2), the first magnets (23) are inserted into the vertical positioning grooves (27), and the two parallel clamping plates (242) close the upper and lower notches of the vertical positioning grooves (27) and press the first magnets (23).

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

9. The optical anti-shake drive mechanism according to claim 8, wherein bosses (11) are provided at four corners of the fixed body (1), respectively, and the bobbin (260) is fixed to two adjacent bosses (11), the bobbin (260) being suspended by the bosses (11).

10. Optical anti-shake drive according to claim 1, characterised in that the fixed body (1) and the translationally moving body (2) are connected by a suspension mechanism that enables the axis of the translationally moving body (2) to coincide with the optical axis (a).

11. Optical anti-shake actuator according to claim 10, characterised in that the suspension means comprise a spring (3) connected to the fixed body (1) and the translatable body (2), a plurality of suspension wires (4) connected to the fixed body (1) and the translatable body (2), the spring (3) being provided with concentricity retaining structures (5) constrained to the suspension wires (4).

12. Optical anti-shake actuation mechanism according to claim 11, characterized in that the concentricity retaining structure (5) is constrained to the anti-torque part (30) of the spring (3).

13. Optical anti-shake drive mechanism according to claim 12, wherein each suspension wire (4) comprises a first wire portion (40) connected to the fixed body (1) and a second wire portion (41) connected to the translationally moving body (2), 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 translationally moving body (2) being connected, the concentricity retaining structure (5) being confined to the first wire portion (40) and the second wire portion (41) of the suspension wire (4).

14. The optical anti-shake drive mechanism according to claim 13, wherein the concentricity retaining structure (5) includes two limiting holes (50) provided on the anti-torque part (30), the first wire part (40) of one suspension wire (4) is inserted in one of the limiting holes (50) and the aperture of the limiting hole (50) is larger than the outer diameter of the first wire part (40), the second wire part (41) of the one suspension wire (4) is inserted in the other limiting hole (50) and the aperture of the limiting hole (50) is larger than the outer diameter of the second wire part (41).

15. Lens driving device having an optical anti-shake drive mechanism according to any of claims 1-14.

16. An image pickup apparatus comprising the lens driving apparatus according to claim 15.

17. An electronic apparatus comprising the imaging device according to claim 16.