CN219107268U

CN219107268U - Module shaft-moving motor based on spring plate structure

Info

Publication number: CN219107268U
Application number: CN202222684210.XU
Authority: CN
Inventors: 庄龙强
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-05-30
Anticipated expiration: 2032-10-12

Abstract

The utility model provides a module moving shaft type motor based on an elastic sheet structure, which comprises a motor anti-shake main body, an inclined anti-shake mechanism and a circuit board, wherein the motor anti-shake main body, the inclined anti-shake mechanism and the circuit board are sequentially arranged from top to bottom, the motor anti-shake main body comprises a photosensitive chip, the inclined anti-shake mechanism comprises a central support piece and a plurality of auxiliary support elastic sheets which are arranged around the periphery of the central support piece, the central support piece is fixedly arranged on the lower surface of the photosensitive chip, two ends of each auxiliary support elastic sheet are respectively and electrically connected with the photosensitive chip and the circuit board, and two ends of each auxiliary support elastic sheet are positioned at different plane heights. The module shaft-moving motor based on the elastic sheet structure has the beneficial effects that the manufacturing process is simple and quick, the structural design is compact and ingenious, and the large-angle inclined anti-shake movement can be effectively supported.

Description

Module shaft-moving motor based on spring plate structure

Technical Field

The utility model relates to the technical field of anti-shake modules, in particular to a module moving shaft type motor based on a spring plate structure.

Background

The optical anti-shake of the smart phone needs to call an acceleration sensor and a gyroscope which are arranged in the smart phone to detect the shake amplitude of the smart phone and adjust and correct the picture of the mobile phone sensor in real time according to the optical anti-shake structure, and the traditional optical anti-shake structure has certain limitation: the anti-shake in the up-down, left-right directions can be realized only, and the anti-shake in the front-back direction of the lens cannot be realized.

Compared with the traditional optical anti-shake technology, the module tilting anti-shake has the inherent structural advantage, namely the lossless anti-shake effect is better than the traditional OIS optical anti-shake effect. Thanks to the integral movement of the lens and the sensor, the module is inclined to prevent the shake in the shake-preventing movement, the module is free from relative displacement, 100% of the module is truly subjected to integral shake prevention, and the problem of image quality loss at the edge is ignored. Secondly, under the holding of module inclination anti-shake and anti-shake, the main lens has a larger rotation angle, the area of the anti-shake range can reach 3.2 times of that of the OIS optical anti-shake mobile phone, and better anti-shake stability is provided.

The existing anti-shake module often adopts a ball type inclined anti-shake module, namely a micro-cradle head mode to overcome the gesture difference generated by inclination in the OIS motion direction, and the micro-cradle head generally adopts a mode of stacking a magnetomotive frame with a special-shaped structure, and consists of a limiting mechanism, a double-ball suspension, a lens, a voice coil motor, a double-S-shaped FPC flat cable, a T-FPC, a magnetomotive frame and an iron shell, and has a complex structure, wherein the micro-cradle head on the market at present needs to be manufactured by a part of a module factory and then is further manufactured by the motor factory, and finally returns to the module factory for integral assembly. The structure has poor anti-shake effect, more complex manufacturing process and complicated material turnover, and the overall reliability and response speed are poor.

In view of this, the inventor of the present application invented a module moving shaft motor based on a spring plate structure, which has a simple and quick process, a compact and smart structural design, and can effectively support a large-angle tilting anti-shake motion.

Disclosure of Invention

The utility model aims to provide a module moving shaft motor based on a spring plate structure, which has simple and quick manufacturing process, compact and ingenious structural design and can effectively support large-angle inclined anti-shake movement.

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

the utility model provides a module moves shaft type motor based on shell fragment structure, includes motor anti-shake main part, slope anti-shake mechanism and the circuit board that from top to bottom set gradually, motor anti-shake main part includes the sensitization chip, slope anti-shake mechanism includes central support piece and a plurality of encircles the supplementary support shell fragment that central support piece week side was arranged, central support piece fixed set up in sensitization chip lower surface, every the sensitization chip and the circuit board are connected to the both ends of supplementary support shell fragment electricity respectively, every the both ends of supplementary support shell fragment are located different plane heights.

As a further improvement, the center support is located at the center of the lower surface of the photosensitive chip, and the lower surface of the center support is spherical to realize tilting motion on the circuit board.

As a further improvement, the auxiliary supporting spring plate comprises two sections of supporting sections distributed at an acute angle, and the height of the auxiliary supporting spring plate is gradually reduced.

As a further improvement, the auxiliary supporting spring plates are divided into four groups which are arranged on the periphery of the central supporting piece in a square shape, and each group comprises a plurality of auxiliary supporting spring plates which are arranged side by side in parallel.

As a further improvement, the auxiliary supporting spring plate comprises a plurality of sections of supporting sections which are bent continuously in a broken line shape, every two adjacent sections of supporting sections are distributed in an obtuse angle mode, and the height of the auxiliary supporting spring plate is gradually reduced.

As a further improvement, the auxiliary supporting spring pieces are divided into four groups which are arranged on the periphery of the central supporting piece in a square shape, each group comprises a plurality of auxiliary supporting spring pieces which are parallel to each other side by side, and the extending directions of each supporting section of the auxiliary supporting spring pieces projected onto the circuit board are different.

As a further improvement, the auxiliary supporting spring plate comprises a plurality of supporting sections which are continuously bent in a broken line shape, the projection of the auxiliary supporting spring plate on the vertical surface is in a curve shape, and the height of the auxiliary supporting spring plate is gradually reduced.

As a further improvement, each auxiliary supporting spring piece is integrally formed.

As a further improvement, the motor anti-shake main body further comprises a shell, an anti-shake coil group, a flexible circuit board support base, an upper focusing spring, a lower focusing spring, focusing coils, a carrier, a magnet support and a magnet group, wherein the number of the focusing coils is two, and two coil limiting grooves are formed in the carrier.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the module moving shaft type motor integral module based on the spring plate structure, the supporting structure that the central supporting piece is matched with the auxiliary supporting spring plate is adopted, on one hand, main supporting force is provided for the motor anti-shake main body through the central supporting piece, the motor anti-shake main body is supported to perform tilting motion through point contact with the circuit board, and secondly, the central supporting piece is arranged on the lower surface of the photosensitive chip, so that the central supporting piece can be prevented from shielding a lens to influence lighting; on the other hand, set up the auxiliary stay shell fragment in the center support piece week side and cooperate the center support piece to provide the even holding power on the face, utilize the auxiliary stay shell fragment to have the structure of difference in height to produce the precompression simultaneously, effectively strengthen the cushioning effect when supporting intensity and slope anti-shake move, ensure whole slope anti-shake effect, overcome the gesture potential difference.

2. The lower surface of the central support piece in the module moving shaft type motor based on the elastic piece structure adopts the arc surface structure, can be effectively matched with the auxiliary support elastic piece to form swinging with the central point as an origin, the swinging amplitude can be flexibly adjusted according to the distance between the photosensitive chip and the circuit board and the volume of the whole module, and the module moving shaft type motor based on the elastic piece structure has the advantages of simple and ingenious structural design and easy and practical function.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an explosion structure of a module moving shaft motor display top based on a spring plate structure;

FIG. 2 is a schematic diagram of an explosion structure of a module moving shaft motor showing the bottom based on a spring structure according to the present utility model

FIG. 3 is a schematic view of the structure of the auxiliary supporting spring plate shown in FIG. 2;

FIG. 4 is a schematic diagram showing a partial structure of an anti-shake body of a modular moving-axis motor based on a spring structure according to the present utility model;

FIG. 5 is a schematic diagram of a modular shift motor according to the present utility model;

FIG. 6 is a schematic diagram of an auxiliary supporting spring plate in a first embodiment of a module moving shaft motor based on spring plate structure according to the present utility model;

FIG. 7 is a schematic diagram of an auxiliary supporting spring plate in a second embodiment of a module moving shaft motor based on spring plate structure according to the present utility model;

FIG. 8 is a schematic diagram of an auxiliary supporting spring plate in a second embodiment of a module moving shaft motor based on spring plate structure according to the present utility model;

fig. 9 is a schematic structural diagram of a module moving shaft motor based on spring structures before the auxiliary supporting spring is not preloaded in a third embodiment of the utility model.

Description of the main reference signs

10. A motor anti-shake body; 11. a housing; 12. an anti-shake coil group; 13. a flexible circuit board; 14. a flexible circuit board support base; 15. focusing an upper spring; 16. a lower focusing spring; 17. a focusing coil; 18. a carrier; 19. a magnet holder; 60. a magnet group; 70. a photosensitive chip; 80. a lens base; 90. a base; 20. an inclined anti-shake mechanism; 21. a center support; 22. an auxiliary supporting spring plate; 30. a circuit board; 40. reinforcing the steel sheet; 50. and (5) a closed-loop control chip.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3 and 5, a novel large-angle anti-shake module with a built-in photosensitive chip 70 includes a motor anti-shake body 10, an inclined anti-shake mechanism 20 and a circuit board 30, which are sequentially arranged from top to bottom, the motor anti-shake body 10 includes a photosensitive chip 70 located at the bottommost of the motor anti-shake body 10, the photosensitive chip 70 is disposed on a plastic chip carrier with leads, the inclined anti-shake mechanism 20 includes a central support 21 and a plurality of auxiliary support spring pieces 22 surrounding the periphery of the central support 21, the central support 21 is fixedly disposed on the lower surface of the photosensitive chip 70, the lower surface of the central support is in contact with the circuit board 30 in a point contact or facet contact manner, two ends of each auxiliary support spring piece 22 are respectively electrically connected with the photosensitive chip 70 and the circuit board 30, two ends of each auxiliary support spring piece 22 are located at different plane heights, the upper end of each auxiliary support spring piece 22 is connected with a lead of the photosensitive chip 70, and the lower end of each auxiliary support spring piece is connected with the lead on the circuit board 30, and the connection of each auxiliary support spring piece 22 is used for realizing conduction on the circuit through connection of the auxiliary support spring pieces 22.

The whole module adopts a supporting structure that the central supporting piece 21 is matched with the auxiliary supporting spring piece 22, on one hand, the central supporting piece 21 provides main supporting force for the motor anti-shake main body 10, the motor anti-shake main body 10 is supported to do tilting motion by point contact with the circuit board 30, and on the other hand, the central supporting piece 21 is arranged on the lower surface of the photosensitive chip 70, so that the central supporting piece 21 can be prevented from shielding a lens to influence lighting; on the other hand, the auxiliary supporting spring piece 22 is arranged on the periphery of the center supporting piece 21 to be matched with the center supporting piece 21 to provide uniform supporting force on the surface, and meanwhile, the structure with the height difference of the auxiliary supporting spring piece 22 is utilized to generate precompression, so that the supporting strength and the buffering effect during the inclined anti-shake movement are effectively enhanced, the overall inclined anti-shake effect is ensured, and the gesture potential difference is overcome.

Referring to fig. 2, the central supporting member 21 is located at the center of the lower surface of the photosensitive chip 70, the upper surface of the central supporting member 21 is a plane for applying glue to achieve fixed adhesion with the lower surface of the photosensitive chip 70, and the lower surface of the central supporting member 21 is a spherical surface to achieve tilting motion on the circuit board 30.

The lower surface of the central support piece 21 adopts an arc surface structure, can be effectively matched with the auxiliary support elastic piece 22 to form swinging with the central point as an origin, the swinging amplitude of the auxiliary support elastic piece can be flexibly adjusted according to the distance between the photosensitive chip 70 and the circuit board 30 and the volume of the whole module, and the auxiliary support elastic piece has simple and ingenious structural design and easy function.

Referring to fig. 3 and 6, the auxiliary supporting spring 22 includes two sections of supporting sections distributed at an acute angle, the whole is in a shape of a plane, two ends of the auxiliary supporting spring 22 and the bending portion are in a shape of a plane, the height of the auxiliary supporting spring 22 is gradually reduced, and the projection lines of the two sections of supporting sections projected onto the circuit board 30 are in a parallel state or have an included angle of not more than 10 degrees.

The auxiliary support spring piece 22 adopts a mode that two sections of bending are matched with three small planes, so that the stability of connection between two ends of the auxiliary support spring piece and the photosensitive chip 70 and the circuit board 30 can be effectively ensured, meanwhile, the bending section with an acute angle is utilized to generate larger upward resilience force, enough supporting force is provided for the anti-shake motor main body on a single point, and the simple integrated structure of the auxiliary support spring piece also enables the production and the installation process to be very convenient.

Further, the auxiliary supporting spring plates 22 are divided into four groups which are arranged on the periphery of the central supporting member 21 in a square shape, and each group comprises a plurality of auxiliary supporting spring plates 22 which are arranged side by side in parallel.

The auxiliary supporting structure formed by adopting the plurality of auxiliary supporting spring plates 22 can fully spread the periphery of the whole plane as far as possible through four groups of supporting unit groups which are arranged side by side in parallel, overcomes the problem that a single auxiliary supporting spring plate 22 is easy to break due to strong resilience force, provides uniform upward plane supporting force for the anti-shake motor main body, and ensures the whole supporting strength.

In addition, each of the auxiliary supporting spring plates 22 is integrally formed. The integrated structure and the manufacturing process are very simple, the whole processing cost and the whole working procedure can be obviously reduced, and the industrialization is easy.

Referring to fig. 1 and 4, the motor anti-shake body 10 further includes a housing 11, an anti-shake coil set 12, a flexible circuit board 13, a flexible circuit board support base 90, an upper focusing spring 15, a lower focusing spring 16, a focusing coil 17, a carrier 18, a magnet support 19, a magnet set 60, a lens seat 80 and a base 90, the number of the focusing coils 17 is two, two coil limiting grooves are formed in the carrier 18, and the overall thrust of the motor can be effectively enhanced by adopting the structure of two diagonal coils, so that the motor with larger volume and weight is adapted.

Further, the magnet support 19 is assembled with four magnets 60, and is provided with a closed-loop control chip 50, the VCM of the mobile phone camera needs the closed-loop control chip 50, namely a Driver IC, to cooperate to complete focusing and anti-shake, and the VCM controls the magnitude of the VCM power supply current through the focusing closed-loop control chip 50 to determine the moving distance of the lens carried by the VCM, so as to adjust to a proper position to shoot a clear image. The inner side of the upper focusing spring 15 is connected with the focusing coil 17 and the closed-loop control chip 50 through wires in the carrier 18, and the outer side of the upper focusing spring is connected with the flexible circuit board bracket base 90 and is communicated with the circuit board 30 at the bottom through the flexible circuit board 13 to realize AF circuit. The in-focus spring 16 is electrically non-conductive and is connected only to the magnet holder 19 and the carrier 18. The focus upper spring 15, focus lower spring 16, magnet holder 19, and carrier 18 form an AF focus member.

Four OIS coils, namely an anti-shake coil set 12, are assembled on the inner side of the flexible circuit board 13, and two OIS closed-loop ICs (not shown in the figure) are disposed on the inner sides of the two OIS coils, for implementing three-axis closed-loop control in cooperation with the AF closed-loop control chip 50, and four bending points at the upper end are welded with the upper focusing spring 15 to communicate with the AF circuit. The AF focusing part, the flexible circuit board 13, and the flexible circuit board holder base 90 further form the OIS anti-shake part, that is, the main part of the motor anti-shake body 10.

The lens seat 80 is arranged below the carrier 18 for supporting and fixing the lens, and the lower surface of the lens seat 80 is used for fixedly arranging the photosensitive chip 70; the base 90 is a pure plastic part, and is arranged below the base 90 of the flexible circuit board support and used for supporting the OIS anti-shake component and protecting the inclined anti-shake mechanism 20, the base 90 is fixed on the circuit board 30, and the circuit board 30, namely, the lower part of the PCB is further provided with a reinforcing steel sheet 40 to improve the overall rigidity of the circuit board 30, so that the problems of circuit damage and the like caused by easy bending are avoided.

Example 2

Referring to fig. 7 and 8, unlike embodiment 1, further, the auxiliary supporting spring 22 includes a plurality of supporting sections continuously bent in a zigzag shape, each two adjacent supporting sections are distributed at an obtuse angle, and the height of the auxiliary supporting spring 22 is gradually reduced. In this embodiment, the number of the supporting sections is five, and the first section is planar and is used for connecting with the lead wire of the photosensitive chip 70; the second section is a bending section with gradually decreasing height, the third section is a planar transition section, the fourth section is a bending section with gradually decreasing height, and the fifth section is planar and is used for being connected with the lead wires of the circuit board 30.

The auxiliary supporting spring piece 22 adopts a multi-section connection mode, so that the connection stability of the two ends with the photosensitive chip 70 and the circuit board 30 can be effectively ensured, and meanwhile, the pre-pressure is formed by utilizing the height difference generated by the middle bending section, so that the supporting force is provided for the anti-shake motor main body.

Furthermore, the auxiliary supporting spring plates 22 are divided into four groups which are arranged on the periphery of the central supporting member 21 in a square shape, each group comprises a plurality of auxiliary supporting spring plates 22 which are arranged side by side in parallel, and the extending directions of each supporting section of the auxiliary supporting spring plates 22 projected onto the circuit board 30 are different.

The auxiliary support structure formed by the auxiliary support spring plates 22 can fully cover the whole plane periphery as much as possible through different extension modes of the extension directions, is compact in structure, provides uniform upward plane support force for the anti-shake motor main body, avoids pose potential difference caused by uneven stress at a certain place, and provides enough support force through four support unit groups arranged side by side in parallel to increase the overall support strength.

Example 3

The auxiliary supporting spring piece 22 comprises a plurality of supporting sections which are continuously bent in a fold line shape, and before the auxiliary supporting spring piece 22 is not pre-pressed, the auxiliary supporting spring piece is in a plane shape, as shown in fig. 9; in actual use, one end of the auxiliary supporting spring plate is pressed down onto the circuit board 30 through a pre-pressing process, a pre-pressing state is formed, after pre-pressing, the projection of the auxiliary supporting spring plate on the vertical surface is in a curve shape, and the height of the auxiliary supporting spring plate is gradually reduced.

The auxiliary supporting spring piece 22 adopts a multi-section connection mode, so that the connection stability of the two ends with the photosensitive chip 70 and the circuit board 30 can be effectively ensured, and meanwhile, the pre-pressure is formed by utilizing the height difference generated by the middle curve part, so that the supporting force is provided for the anti-shake motor main body.

The auxiliary support shrapnel 22 are divided into four groups which are square and distributed on the periphery of the central support piece 21, each group comprises a plurality of auxiliary support shrapnels 22 which are parallel and distributed side by side, and the extending directions of each section of the auxiliary support shrapnel 22 projected onto the circuit board 30 are different, so that a larger support area with a more compact structure is formed.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A module shaft-moving motor based on a spring plate structure is characterized in that: including motor anti-shake main part (10), slope anti-shake mechanism (20) and circuit board (30) that from top to bottom set gradually, motor anti-shake main part (10) are including sensitization chip (70), slope anti-shake mechanism (20) are including central support piece (21) and a plurality of encircle supplementary support shell fragment (22) that central support piece (21) week side was arranged, central support piece (21) fixed set up in sensitization chip (70) lower surface, every supplementary support shell fragment (22) both ends are electric respectively connected sensitization chip (70) and circuit board (30), every supplementary support shell fragment (22) both ends are located different plane heights.

2. The spring structure-based modular shift motor of claim 1, wherein: the center support (21) is located at the center of the lower surface of the photosensitive chip (70), and the lower surface of the center support (21) is spherical to realize tilting motion on the circuit board (30).

3. The spring structure-based modular shift motor of claim 1, wherein: the auxiliary supporting spring piece (22) comprises two sections of supporting sections which are distributed at an acute angle, and the height of the auxiliary supporting spring piece (22) is gradually reduced.

4. A modular shift motor based on a spring structure according to claim 3, wherein: the auxiliary supporting elastic pieces (22) are divided into four groups which are arranged on the periphery of the central supporting piece (21) in a square shape, and each group comprises a plurality of auxiliary supporting elastic pieces (22) which are arranged side by side in parallel.

5. The spring structure-based modular shift motor of claim 1, wherein: the auxiliary supporting spring piece (22) comprises a plurality of supporting sections which are bent continuously in a broken line shape, every two adjacent supporting sections are distributed in an obtuse angle mode, and the height of the auxiliary supporting spring piece (22) is gradually reduced.

6. The spring structure-based modular shift motor of claim 5, wherein: the auxiliary support spring plates (22) are divided into four groups which are square-shaped and distributed on the periphery of the central support piece (21), each group comprises a plurality of auxiliary support spring plates (22) which are distributed in parallel side by side, and the extending directions of each section of the auxiliary support spring plates (22) projected onto the circuit board (30) are different.

7. The spring structure-based modular shift motor of claim 1, wherein: the auxiliary support spring piece (22) comprises a plurality of support sections which are continuously bent in a broken line shape, the projection of the auxiliary support spring piece (22) on a vertical surface is in a curve shape, and the height of the auxiliary support spring piece (22) is gradually reduced.

8. The spring structure-based modular shift motor of claim 7, wherein: the auxiliary support spring plates (22) are divided into four groups which are square-shaped and distributed on the periphery of the central support piece (21), each group comprises a plurality of auxiliary support spring plates (22) which are distributed in parallel side by side, and the extending directions of each section of the auxiliary support spring plates (22) projected onto the circuit board (30) are different.

9. The spring structure-based modular shift motor according to any one of claims 1 to 8, wherein: each auxiliary supporting spring piece (22) is integrally formed.

10. The spring structure-based modular shift motor of claim 1, wherein: the motor anti-shake main body (10) further comprises a shell (11), an anti-shake coil group (12), a flexible circuit board (13), a flexible circuit board support base (90), an upper focusing spring (15), a lower focusing spring (16), focusing coils (17), a carrier (18), a magnet support (19) and a magnet group (60), wherein the number of the focusing coils (17) is two, and two coil limiting grooves are formed in the carrier (18).