CN113514930B

CN113514930B - Automatic focusing anti-shake periscope motor with laser etching conducting circuit

Info

Publication number: CN113514930B
Application number: CN202110824728.6A
Authority: CN
Inventors: 龚高峰; 王建华; 王林
Original assignee: Shanghai BL Electronics Co Ltd
Current assignee: Shanghai BL Electronics Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-11-04
Anticipated expiration: 2041-07-21
Also published as: WO2023000487A1; CN113514930A

Abstract

The invention discloses an automatic focusing anti-shake periscope motor with laser etching conductive circuits, which comprises: the device comprises a base, a frame arranged on the base, a carrier arranged in the base and a shell embedded with the base; the Y-axis driving assembly comprises a first driving coil fixed on one side surface of the carrier, a second driving coil arranged on the other side surface of the carrier opposite to the first driving coil, a Hall chip fixed on the carrier and positioned on the same side of the second driving coil, and a capacitor; the first driving coil and the second driving coil are communicated through a laser etching conductive circuit, and the laser etching conductive circuit is fixed on the carrier through a laser etching process. According to the invention, the motor has high integral integration, is convenient for centralized detection, avoids the technical dark corner condition, meets the requirement of a high-quality camera, and simultaneously reduces the difficulty of tooling and processing and the cost.

Description

Automatic focusing anti-shake periscope motor with laser etching conducting circuit

Technical Field

The invention relates to the technical field of lens motors, in particular to an automatic focusing anti-shake periscope motor with laser etching conductive circuits.

Background

The voice coil motor is a device which generates regular motion by utilizing the interaction between a magnetic field from permanent magnetic steel and magnetic poles in a magnetic field generated by an electrified coil conductor, and is widely used in electronic devices such as mobile phone cameras and the like. With the development of technology, many electronic devices (such as tablet computers or smart phones) have a function of taking pictures or recording videos. Through the setting of long focal length lens system, the user can take the photo of different effects for the electron device that has long focal length's lens system also receives popular gradually.

When the lens with a longer focal length needs to be disposed in the electronic device, the thickness of the electronic device is increased, which is not favorable for the electronic device to be light and thin, and the conventional base has a single functionality and poor alignment accuracy when the housing is mounted. Therefore, a reflective element (prism motor) is generally disposed in the lens system to guide incident light to a sensing element in the lens system in a reflective manner. With such a configuration, the thickness of the electronic device can be reduced. However, when the electronic device is shaken, the position where the incident light reaches the sensing assembly may be shifted to a predetermined position, which may make the image generated by the lens system unclear. In addition, in the current periscopic camera structure, the rotation of the prism motor and the two-direction movement of the periscopic motor are utilized to realize the purpose of three-axis motion control, but the problems are that the rotation of the prism motor can cause an imaging dark angle, and the control problem caused by the difference of motion modes of two components is solved, so the requirement of the size precision of the relative position is more strict, the processing and assembling difficulty is increased, or the manufacturing cost and the assembling cost are increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the automatic focusing anti-shake periscope motor with the laser etching conducting circuit, so that the motor is high in integral integration degree, convenient to detect in a centralized mode, capable of avoiding the technical dark angle condition, capable of meeting the requirement of a high-quality camera, capable of reducing the difficulty of tooling and processing and capable of greatly reducing the cost. To achieve the above objects and other advantages in accordance with the present invention, there is provided an auto-focusing anti-shake periscope motor having laser etched conductive traces, comprising:

the device comprises a base, a frame arranged on the base, a carrier arranged in the base and a shell embedded with the base;

a Y-axis driving assembly is arranged on the inner side surface of the frame, an X-axis driving assembly is arranged on the side surface, far away from the Y-axis driving assembly, of the frame, and a Z-axis driving assembly is arranged on one end surface, close to the base, of the frame;

the Y-axis driving assembly comprises a first driving coil fixed on one side surface of the carrier, a second driving coil arranged on the other side surface of the carrier opposite to the first driving coil, a Y-axis driving magnet embedded on the inner side surface of the frame and arranged opposite to the first driving coil and the second driving coil respectively, and a Hall chip and a capacitor which are fixed on the carrier and positioned on the same side of the second driving coil;

the first driving coil and the second driving coil are communicated through a laser etching conducting circuit, and the laser etching conducting circuit is fixed on the carrier through a laser etching process.

Preferably, the X-axis driving assembly includes a first X-axis driving member and a second X-axis driving member disposed opposite to the first X-axis driving member, and the first X-axis driving member and the second X-axis driving member have the same structure.

Preferably, the first X-axis driving member includes an X-axis driving magnet embedded on an outer side surface of the frame and an X driving coil disposed opposite to the X-axis driving magnet, and the X driving coil is attached to an inner wall of the base.

Preferably, the Z-axis driving assembly includes a first Z-axis driving member and a second Z-axis driving member disposed opposite to the first Z-axis driving member, and the first Z-axis driving member and the second Z-axis driving member have the same structure.

Preferably, the first Z-axis driving member includes a Z-axis driving magnet mounted on an end surface of the frame near the base, and a Z-axis driving coil disposed opposite to the Z-axis driving magnet, and the Z-axis driving coil is wound around the base.

Preferably, a first spring assembly is fixed on the upper end face of the frame, a second spring assembly is fixed on the end face of the frame close to the base, one end of the first spring assembly is fixed on the frame, the other end of the first spring assembly is fixed on the upper end face of the carrier, one end of the second spring assembly is fixed on the frame, and the other end of the second spring assembly is fixed on the lower end face of the carrier.

Preferably, the first spring assembly comprises a plurality of first springs, the first springs are fixed at corners of the upper end face of the frame, and the first springs are arranged at intervals and have the same structure.

Preferably, the first spring comprises a fixed main board fixed on the frame, a first carrier fixing plate connected with one end of the fixed main board through a fixing plate, and a suspension needle fixing seat connected with the other end of the fixed main board through a spring chain, and the first carrier fixing plate is fixed on the carrier.

Preferably, the second spring assembly comprises a second spring fixed on the frame and a third spring parallel to the second spring and fixed on the frame, and the second spring and the third spring have the same structure.

Preferably, the second spring includes a second carrier fixing plate fixed on the carrier and second fixing plates respectively fixedly connected to two ends of the second carrier fixing plate, a frame fixing plate is fixedly connected to the second fixing plate, and the frame fixing plate is fixed on the frame.

Preferably, the shell includes a panel and follows the baffle that the panel border extends to vertical direction has been seted up on a shell baffle and has been stepped down the interval, and on the shell with set up the hole of making a video recording on the relative baffle in the interval of stepping down.

Preferably, four suspension wires are arranged on the base, one end of each suspension wire penetrates through the base, the other end of each suspension wire extends in the vertical direction and extends to the first spring assembly, and each suspension wire corresponds to the first spring one to one.

Preferably, the Z-axis driving assembly is attached to a Z-axis closed-loop circuit assembly, the carrier is attached to a Y-axis closed-loop circuit assembly, the Z-axis closed-loop circuit assembly comprises a Z-axis circuit board, a Z-axis Hall chip and an X-axis Hall chip, the Z-axis Hall chip and the X-axis Hall chip are arranged on the Z-axis circuit board, and the Y-axis closed-loop circuit assembly comprises a Y-axis circuit board and a Y-axis Hall chip arranged on the Y-axis circuit board.

Preferably, one side of each first bonding pad is provided with a dispensing boss, one side of each dispensing boss is provided with a suspension wire jack, and a suspension wire is inserted into each suspension wire jack.

Preferably, a prism motor mounting plate is fixedly connected to one side of the bottom plate, and a limit block is fixedly connected to one end, close to the prism motor mounting plate, of the bottom plate.

Preferably, the first driving coil and the second driving coil are electrified and sequentially communicated with a driving circuit board of the first driving coil, the second driving coil, the suspension wire, the first spring assembly and the Z-axis driving assembly through the laser etching conductive circuit.

Compared with the prior art, the invention has the beneficial effects that: the laser etching conductive circuit is fixed on the carrier through the laser etching process, a lateral FPC board in the prior art is replaced, the number of motor assembling parts is reduced, the structure of the motor is simplified, the motor is easy to assemble, and the assembling stability of the motor can be improved; the motor is characterized in that a spring, a Hall element and a Y-axis coil are connected through LDS wiring, a larger electric connection area is convenient to realize, the condition of poor conduction can be reduced, the current fault rate of a motor structure is reduced, and the stability of the motor performance is further improved; the movement of a prism motor is cancelled, so that the dark corner condition in the prior art is avoided; the whole device processing and the equipment degree of difficulty reduce, manufacturing cost such as die sinking has also been reduced, be located Y axle drive assembly, drive magnetite in X axle drive assembly and the drive of Z axle drive assembly plays hall response's effect simultaneously, the problem of the mutual magnetic interference of drive magnetite and hall magnetite magnetism that often meets in the conventional anti-shake motor structure has not only been overcome, the framework and the function of triaxial anti-shake control have been successfully realized, the whole more loose size design space of motor has been given simultaneously. Because the number of the parts is reduced, the cost is saved to a certain extent, and the assembly is easier and simpler.

Drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of an auto-focusing anti-shake periscope motor with laser etching conductive circuits according to the present invention;

FIG. 2 is a schematic diagram of a three-dimensional explosion structure of an auto-focusing anti-shake periscope motor with laser etched conductive traces according to the present invention;

FIG. 3 is a schematic diagram of a three-dimensional structure of a second spring assembly of the auto-focus anti-shake periscope motor with laser etched conductive traces according to the present invention;

FIG. 4 is a schematic diagram showing a three-dimensional structure of a Y-axis driving coil of the auto-focusing anti-shake periscope motor with laser etching conductive circuits according to the present invention;

FIG. 5 is a schematic diagram of a three-dimensional structure of a Y-axis driving coil of the auto-focus anti-shake periscope motor with laser etched conductive traces according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an auto-focusing anti-shake periscope motor with laser etching conductive circuit includes: a base 20, a frame 30 provided on the base 20, a carrier 40 provided in the base 20, and a housing 10 fitted to the base 20; a Y-axis driving assembly 100 is arranged on the inner side surface of the frame 30, an X-axis driving assembly 50 is arranged on the side surface, far away from the Y-axis driving assembly 100, of the frame 30, and a Z-axis driving assembly 60 is arranged on one end surface, close to the base 20, of the frame 30; the Y-axis driving assembly 100 includes a first driving coil 51 fixed on one side surface of the carrier 40, a second driving coil 53 fixed on the other side surface of the carrier 40 opposite to the first driving coil 51, a Y-axis driving magnet embedded on the inner side surface of the frame 30 and disposed opposite to the first and second driving coils 51, 53, and a hall chip 52 and a capacitor 54 fixed on the same side of the carrier 40 as the second driving coil 53, so that electromagnetic force is generated between the first and second driving coils 51, 53 and the Y-axis driving magnet, and according to fleming's principle, the Y-axis motor is driven to linearly move along the Y-axis direction by the action of the electromagnetic force, even if the carrier 40 finally stays at a position point where the resultant force of the electromagnetic force generated between the first and second driving coils 51, 53 and the Y-axis driving magnet and the elastic force of the first and second spring assemblies 90, 70 reaches a balanced state. Through letting in established electric current to first drive coil 51 and second drive coil 53, steerable wire winding carrier moving quantity of motion reaches the deviation of adjustment and correction camera lens, reach the purpose of anti-shake with this, first drive coil 51 and second drive coil 53 twine on carrier 40 lateral surface, this Y axle drive magnetite plays hall induction's effect simultaneously, not only overcome the problem of the mutual magnetic interference of drive magnetite and hall magnetite magnetism that often meets in the conventional anti-shake motor structure, the framework and the function of triaxial anti-shake control have been successfully realized, the whole more loose size design space of motor has been given simultaneously. The number of parts is reduced, so that the cost is saved to a certain extent, and the assembly is easier and simpler; the first driving coil 51 is communicated with the second driving coil 53 through the laser etching conductive circuit 80, and the laser etching conductive circuit 80 is fixed on the carrier 40 through the laser etching process, so that the number of parts of the motor is reduced, the structure of the motor is simplified, the assembly of the motor is easy, and the assembly stability of the motor can be improved; the first spring 90, the hall chip 52, the first driving coil 51 and the second driving coil 53 are connected through the LDS routing, so that a larger electric connection area is conveniently realized, the condition of poor conduction can be reduced, the current failure rate of the motor structure is reduced, and the stability of the motor performance is further improved.

Further, the X-axis driving assembly 50 includes a first X-axis driving member and a second X-axis driving member disposed opposite to the first X-axis driving member, and the first X-axis driving member and the second X-axis driving member have the same structure, the first X-axis driving member includes an X-axis driving magnet embedded on the outer side surface of the frame 30 and an X-axis driving coil disposed opposite to the X-axis driving magnet, when a current is applied to the X-axis driving coil, an electromagnetic force is generated between the X-axis driving coil and the X-axis driving magnet, according to fleming's left-hand rule, due to the action of the electromagnetic force, the X-axis actuator is driven to move linearly along the X-axis direction, even if the resultant force of the electromagnetic force generated between the X-axis driving coil and the X-axis driving magnet and the elastic force of the four-corner suspension wires finally reaches a position point when the resultant force reaches a phase equilibrium state. Through letting in established electric current to X axle collar form coil, steerable wire winding carrier moving quantity of movement reaches the adjustment and corrects the off normal of camera lens to this purpose that reaches the anti-shake, the attached setting of X drive coil is on base 20's inner wall, and this X axle drive magnetite plays hall response's effect simultaneously, has not only overcome the drive magnetite that often meets in the conventional anti-shake motor structure and has disturbed the problem of the mutual magnetic flux of hall magnetite magnetism, has successfully realized the framework and the function of triaxial anti-shake control, has given the whole more loose dimensional design space of motor simultaneously. Because the number of the parts is reduced, the cost is saved to a certain extent, and the assembly is easier and simpler.

Further, the Z-axis driving assembly 60 includes a first Z-axis driving member and a second Z-axis driving member disposed opposite to the first Z-axis driving member, and the first Z-axis driving member and the second Z-axis driving member have the same structure, the first Z-axis driving member includes a Z-axis driving magnet embedded on the end surface of the frame 30 close to the base 20 and a Z-axis driving coil disposed opposite to the Z-axis driving magnet, when current is applied to the Z-axis driving coil, electromagnetic force is generated between the Z-axis driving magnet and the Z-axis driving magnet, according to fleming's left-hand rule, the Z-axis actuator is driven by electromagnetic force to move linearly along the optical axis direction of the lens (i.e., the Z-axis), even if the winding carrier finally stays at a position point when the resultant force of the electromagnetic force generated between the driving coil and the Z-axis driving magnet and the elastic force of the four-corner suspension wires reaches a phase equilibrium state. The winding carrier can be controlled to move to a target position by applying a set current to the Z-axis driving coil, so that the purpose of automatic focusing is achieved. The Z-axis driving coil is wound on the coil fixing column of the base 20 and fixed on the bottom PCB, and the Z-axis driving magnet plays a role in Hall induction at the same time, so that the problem of magnetic interference between the driving magnet and the Hall magnet in a conventional anti-vibration motor structure, which is often encountered, is solved, the framework and the function of three-axis anti-vibration control are successfully realized, and meanwhile, a more loose size design space is given to the whole motor. Because the number of the parts is reduced, the cost is saved to a certain extent, and the assembly is easier and simpler.

Further, a first spring assembly 90 is fixed on the upper end face of the frame 30, and a second spring assembly 70 is fixed on the end face of the frame 30 close to the base 20, one end of the first spring assembly 90 is fixed on the frame 30, the other end of the first spring assembly is fixed on the upper end face of the carrier 40, one end of the second spring assembly 70 is fixed on the frame 30, and the other end of the second spring assembly is fixed on the lower end face of the carrier 40.

Further, the first spring assembly 90 includes a plurality of first springs 91, the first springs 91 are fixed at corners of the upper end surface of the frame 30, each of the first springs 91 is spaced apart from each other and has the same structure, the first springs 91 include a fixed main board 911 fixed on the frame 30, a first carrier fixing plate 913 connected to one end of the fixed main board 911 through a fixing plate, and a suspension needle fixing seat 912 connected to the other end of the fixed main board 911 through a spring chain, and the first carrier fixing plate 913 is fixed on the carrier 40.

Further, the second spring assembly 70 includes a second spring 71 fixed on the frame 30 and a third spring parallel to the second spring 71 and fixed on the frame 30, the second spring 71 and the third spring have the same structure, the second spring 71 includes a second carrier fixing plate 711 fixed on the carrier 40 and second fixing plates respectively fixedly connected to two ends of the second carrier fixing plate 711, the second fixing plate is fixedly connected to a frame fixing plate 712, and the frame fixing plate 712 is fixed on the frame 30.

Furthermore, the shell 10 includes a flat panel 11 and follows the baffle 12 that 11 borders of flat panel extend to vertical direction has seted up the interval of stepping down on the baffle 12 of shell 10, and on the shell 10 with set down and seted up the hole of making a video recording on the interval relative baffle 12.

Further, the base 20 is provided with four suspension wires 21, one end of each suspension wire 21 penetrates through the base 20, the other end of each suspension wire 21 extends in the vertical direction and extends to the first spring assembly 90, each suspension wire 21 corresponds to the first spring 91 one by one, currents of the four suspension wires 21 are divided into two inlets and two outlets, and the current inlet and outlet directions of the suspension wires 21 are determined by routing on the Z-axis circuit board.

Furthermore, the first driving coil 51 and the second driving coil 53 are sequentially communicated with a driving circuit board of the first driving coil 51, the second driving coil 53, the suspension wire 21, the first spring assembly 90 and the Z-axis driving assembly 60 through laser etching conductive circuits 80 by electrifying the first driving coil 51 and the second driving coil 53.

The number of devices and the scale of the processes described herein are intended to simplify the description of the invention, and applications, modifications and variations of the invention will be apparent to those skilled in the art.

While embodiments of the invention have been described above, it is not intended to be limited to the details shown, described and illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are readily available to those skilled in the art, and it is not intended to be limited to the details shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.

Claims

1. An auto-focusing anti-shake periscope motor with laser etching conductive circuits is characterized by comprising: a base (20), a frame (30) arranged on the base (20), a carrier (40) arranged in the base (20) and a shell (10) embedded with the base (20); a Y-axis driving component (100) is arranged on the inner side surface of the frame (30), an X-axis driving component (50) is arranged on the side surface, far away from the Y-axis driving component (100), of the frame (30), and a Z-axis driving component (60) is arranged on one end surface, close to the base (20), of the frame (30); the Y-axis driving assembly (100) comprises a first driving coil (51) fixed on one side surface of a carrier (40), a second driving coil (53) which is arranged on the other side surface of the carrier (40) opposite to the first driving coil (51), Y-axis driving magnets which are embedded on the inner side surface of the frame (30) and are respectively arranged opposite to the first driving coil (51) and the second driving coil (53), and a Hall chip (52) and a capacitor (54) which are fixed on the carrier (40) and are positioned on the same side of the second driving coil (53); the first driving coil (51) is communicated with the second driving coil (53) through a laser etching conductive circuit (80), and the laser etching conductive circuit (80) is fixed on the carrier (40) through a laser etching process;

the X-axis driving assembly (50) comprises a first X-axis driving piece and a second X-axis driving piece which is opposite to the first X-axis driving piece, and the first X-axis driving piece and the second X-axis driving piece are identical in structure;

the first X-axis driving part comprises an X-axis driving magnet embedded on the outer side surface of the frame (30) and an X driving coil arranged opposite to the X-axis driving magnet, and the X driving coil is attached to the inner wall of the base (20);

the Z-axis driving assembly (60) comprises a first Z-axis driving piece and a second Z-axis driving piece opposite to the first Z-axis driving piece, and the first Z-axis driving piece and the second Z-axis driving piece are identical in structure;

the first Z-axis driving part comprises a Z-axis driving magnet embedded on the end face, close to the base (20), of the frame (30) and a Z-axis driving coil arranged opposite to the Z-axis driving magnet, and the Z-axis driving coil is wound on the base (20);

the first driving coil (51) and the second driving coil (53) are electrified and are sequentially communicated with a driving circuit board of the first driving coil (51), the second driving coil (53), the suspension wire (21), the first spring assembly (90) and the Z-axis driving assembly (60) through the laser etching conducting circuit (80);

the Z-axis drive assembly is attached to a Z-axis closed-loop circuit assembly, the carrier is attached to a Y-axis closed-loop circuit assembly, the Z-axis closed-loop circuit assembly comprises a Z-axis circuit board, a Z-axis Hall chip and an X-axis Hall chip, the Z-axis Hall chip and the X-axis Hall chip are arranged on the Z-axis circuit board, and the Y-axis closed-loop circuit assembly comprises a Y-axis circuit board and a Y-axis Hall chip, the Y-axis Hall chip is arranged on the Y-axis circuit board.

2. The auto-focusing anti-shake periscope motor with laser etching conductive circuits as claimed in claim 1, wherein a first spring assembly (90) is fixed on the upper end face of the frame (30), and a second spring assembly (70) is fixed on the end face of the frame (30) close to the base (20), one end of the first spring assembly (90) is fixed on the frame (30), the other end is fixed on the upper end face of the carrier (40), one end of the second spring assembly (70) is fixed on the frame (30), and the other end is fixed on the lower end face of the carrier (40).

3. The auto-focusing anti-shake periscope motor with laser etching conductive circuits as claimed in claim 2, wherein the first spring assembly (90) comprises a plurality of first springs (91), the first springs (91) are fixed at corners of an upper end face of the frame (30), and each first spring (91) is spaced apart from each other and has the same structure.

4. The auto-focusing anti-shake periscope motor with laser engraving conductive circuits as claimed in claim 3, wherein the first spring (91) comprises a fixed main board (911) fixed on the frame (30), a first carrier fixing board connected with one end of the fixed main board (911) through a fixing board, and a suspension needle fixing base connected with a spring chain at the other end of the fixed main board (911), and the first carrier fixing board is fixed on the carrier (40).

5. The auto-focusing anti-shake periscope motor with laser-engraved conductive traces of claim 2, wherein the second spring assembly (70) comprises a second spring (71) fixed on the frame (30) and a third spring parallel to the second spring (71) and fixed on the frame (30), and the second spring (71) and the third spring have the same structure.

6. The auto-focusing anti-shake periscope motor with laser-engraved conductive traces of claim 5, wherein the second spring (71) comprises a second carrier fixing plate (711) fixed on the carrier (40) and second fixing plates fixedly connected to two ends of the second carrier fixing plate (711), respectively, and a frame fixing plate is fixedly connected to the second fixing plate and fixed on the frame (30).

7. The auto-focusing anti-shake periscope motor with laser engraving conductive circuits as claimed in claim 1, wherein the housing (10) comprises a flat plate (11) and a baffle (12) extending along the edge of the flat plate (11) in a vertical direction, a yielding section is disposed on the baffle (12) of the housing (10), and a camera hole is disposed on the baffle (12) of the housing (10) opposite to the yielding section.

8. The auto-focusing anti-shake periscope motor with laser engraving conductive circuits as claimed in claim 3, wherein four suspension wires (21) are disposed on the base (20), one end of each suspension wire (21) penetrates through the base (20), the other end of each suspension wire (21) extends in a vertical direction and extends to the first spring assembly (90), and each suspension wire (21) corresponds to the first spring (91) one by one.