CN110764335A

CN110764335A - Lens driving motor, camera and mobile terminal

Info

Publication number: CN110764335A
Application number: CN201911055315.5A
Authority: CN
Inventors: 龚高峰; 王建华; 夏晓锋
Original assignee: Cyprus Shanghai Electronic Ltd By Share Ltd
Current assignee: Cyprus Shanghai Electronic Ltd By Share Ltd; Shanghai BL Electronics Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-07

Abstract

The invention provides a lens driving motor, a camera and a mobile terminal. Wherein lens actuating motor includes shell, drive magnetite, lens supporter, coil, lower spring and base subassembly, and the shell setting is in order to form the accommodation space between the two on the base subassembly, and the coil is around establishing on the lens supporter, and the drive magnetite corresponds the coil setting, and lower spring is located between lens supporter and the base subassembly, and the base subassembly includes: a base body; the reinforced structure, at least one part of reinforced structure buries in base body's inside, and reinforced structure includes a plurality of welding protrusion, and four angular department of base body correspond respectively and are provided with at least one welding protrusion, and each welding protrusion stretches out by base body towards one side at lens supporter place, and the lens supporter passes through down spring and each welding protrusion is connected. The invention solves the problem of poor use performance of the lens motor in the prior art.

Description

Lens driving motor, camera and mobile terminal

Technical Field

The invention relates to the technical field of cameras, in particular to a lens driving motor, a camera and a mobile terminal.

Background

Since a mobile terminal such as a mobile phone is generally required to have a thin structure, a motor is often designed to have a thin structure in order to miniaturize the mobile terminal, and accordingly, a higher demand is made for a combination manner between internal components. Generally, the components are electrically connected and connected by welding, hot riveting, dispensing and the like. However, there are some problems of insufficient solder joint or loose solder joint during soldering, and there are various situations of unstable adhesion during dispensing. When the mobile phone is subjected to external forces such as falling impact and the like, the motor vibrates due to the external force to cause the phenomenon that the internal welding point or the dispensing point is pulled to fall off. Finally, the internal electrical performance and the combined structure are damaged, the normal performance of the motor is affected finally, and adverse consequences are brought to the shooting effect. In a word, various poor driving problems possibly existing in the running process of the motor are closely related to a reasonable assembly mode of internal components, and the camera shooting stability and the user experience are influenced profoundly.

Therefore, the lens motor in the prior art has the problem of poor use performance. The invention further ensures and improves the service performance of the motor by adopting related technical means based on the problem point.

Disclosure of Invention

The present invention is directed to a lens driving motor, a camera and a mobile terminal, so as to solve the problem of poor performance of the lens driving motor in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a lens driving motor including a housing, a driving magnet, a lens support, a coil, a lower spring, and a base assembly, the housing being disposed on the base assembly to form an accommodating space therebetween, the driving magnet, the lens support, the coil, and the lower spring being disposed in the accommodating space, and the coil being wound on the lens support, the driving magnet being disposed corresponding to the coil, and the lower spring being disposed between the lens support and the base assembly, the base assembly including: a base body; the lens support comprises a base body, a reinforcing structure, at least one part of the reinforcing structure is embedded in the base body, the reinforcing structure comprises a plurality of welding protrusions, at least one welding protrusion is correspondingly arranged at each of four corners of the base body, each welding protrusion extends out from one side of the base body towards the lens support body, the lens support body is connected with each welding protrusion through a lower spring, the reinforcing structure further comprises at least two conductive end feet, and the conductive end feet extend out from one side of the base body away from the lens support body.

Furthermore, the welding bulge is of a bending structure, the bending structure at least comprises a first section and a second section which are connected in sequence, the first section extends out from the base body towards the lens support body, and an included angle is formed between the second section and the first section.

Further, the second section extends away from the center of the base body; and/or the extending directions of the second sections of the welding protrusions positioned on the same side of the base body are consistent; and/or the second section of the welding projection at the opposite side of the base body is directed away from each other.

Further, the height of each welding projection is the same; and/or the length of the first section is less than the length of the second section; and/or the ratio between the length of the first segment and the length of the second segment is greater than or equal to 0.25 and less than or equal to 0.60.

Further, the lower spring comprises a first substructure and a second substructure which are identical in structure, the first substructure and the second substructure are symmetrical about the center of a diagonal line of the base body, and the first substructure and the second substructure are respectively connected with a group of two adjacent welding bulges.

Further, first substructure corresponds a set of adjacent straight flange of base body, and first substructure includes first bight connection piece and second bight connection piece, and first bight connection piece and second bight connection piece correspond two adjacent bights of base body respectively, and first bight connection piece is located the tip of first substructure, second bight connection piece is located the middle part of first substructure, first bight connection piece is connected with second bight connection piece through first linkage segment, all be provided with a plurality of hot riveting holes on first bight connection piece and the second bight connection piece, four corners department of base body is provided with at least one hot riveting post respectively, a plurality of hot riveting holes and hot riveting post one-to-one.

Furthermore, the first substructure further comprises a plurality of connecting holes, one end of the first connecting section, which is close to the second substructure, is provided with a connecting hole, the position of the first connecting section, which is located between the first corner connecting sheet and the second corner connecting sheet, is provided with a connecting hole, and the connecting hole is connected with the positioning column of the lens support body.

Furthermore, the first substructure further comprises a cantilever section connected with the first connection section, the cantilever end of the cantilever section is provided with at least one soldering tin hole, and the lower spring is connected with the winding post of the lens support body through the soldering tin hole.

Further, the base body comprises two first limiting walls, one first limiting wall is arranged on each of a group of parallel opposite sides of the base body, and the first limiting walls extend out towards the lens support body.

Furthermore, the base body also comprises a plurality of glue dispensing grooves which are arranged on the peripheral side wall of the base body at intervals; and/or the surface of one side of the first limiting wall far away from the lens support body is provided with at least one spot gluing groove.

Furthermore, a plurality of clamping bulges are arranged at the edge of the base, and a clamping groove matched with the clamping bulges is arranged on the shell; or the edge of the base is provided with a plurality of clamping grooves, and the shell is provided with clamping bulges matched with the clamping grooves.

Further, lens actuating motor still includes the upper cover, and the upper cover setting is between shell and lens supporter, and the drive magnetite is two, and two drive magnetites set up respectively at one of upper cover to the edge, and the upper cover includes two spacing walls of second, and two spacing walls of second set up at the other group of edge of upper cover, and the spacing wall of second and the first spacing wall parallel arrangement of base body, lie in and have the installation clearance between the spacing wall of first spacing wall and the second with one side.

Further, the lens driving motor further comprises an upper spring, the upper spring is arranged between the upper cover and the driving magnet, the upper cover and the lens supporting body are respectively provided with a plurality of positioning columns, the upper cover is connected with the upper spring through the positioning columns, and the lens supporting body is respectively connected with the upper spring and the lower spring through the positioning columns.

Further, the upper spring includes: an inner ring structure; the lens support comprises an outer ring structure, a plurality of through holes are formed in the inner ring structure and the outer ring structure respectively, a positioning column of the upper cover is connected with the through holes of the outer ring structure, and the positioning column, close to one side of the upper cover, of the lens support body is connected with the through holes in the inner ring structure.

Furthermore, a plurality of glue seams are further arranged on the outer ring structure and communicated with the through holes, and the glue seams are symmetrically arranged relative to the through holes.

Furthermore, the upper spring further comprises a plurality of intermediate structures arranged at intervals, two ends of the plurality of intermediate structures are respectively connected with the inner ring structure and the outer ring structure, the intermediate structures are provided with bending sections, and each bending section comprises at least one U-shaped section.

Furthermore, the shell also comprises at least one connecting terminal pin, the connecting terminal pin is arranged on one side of the shell close to the base body, and the distance from one end of the connecting terminal pin far away from the shell to the lens support body is greater than the distance from the base body to the lens support body.

According to another aspect of the present invention, there is provided a camera including the lens driving motor described above.

According to another aspect of the present invention, there is provided a mobile terminal including the camera described above.

Further, the mobile terminal comprises at least one of a mobile phone, an information carrying terminal and a notebook computer.

By applying the technical scheme of the invention, the lens driving motor comprises a shell, a driving magnet, a lens supporting body, a coil, a lower spring and a base assembly, wherein the shell is arranged on the base assembly to form an accommodating space between the shell and the base assembly, the driving magnet, the lens supporting body, the coil and the lower spring are all positioned in the accommodating space, the coil is wound on the lens supporting body, the driving magnet is arranged corresponding to the coil, the lower spring is positioned between the lens supporting body and the base assembly, and the base assembly comprises a base body and a reinforcing structure. At least one part of the reinforcing structure is embedded in the base body, the reinforcing structure comprises a plurality of welding protrusions, at least one welding protrusion is correspondingly arranged at each of four corners of the base body respectively, each welding protrusion extends out from one side of the base body, which faces the lens support body, the lens support body is connected with each welding protrusion through a lower spring, the reinforcing structure further comprises at least two conductive end feet, and the conductive end feet extend out from one side, which is far away from the lens support body, of the base body.

When the lens driving motor with the structure is used, the base assembly comprises the base body and the reinforcing structure, so that the shock resistance of the base body can be improved through the reinforcing structure, and the base assembly can not deform after the lens driving motor is impacted and vibrated. Because four angular point departments of base body correspond respectively again and are provided with at least one welding arch, the spring just can appear with base subassembly disconnection's condition after spring and whole welding arch break away from the connection down in addition when setting up, can realize being connected with base subassembly through welding with welding arch down. Therefore, the stability of the electric connection between the lower spring and the base assembly is effectively ensured through the arrangement. Therefore, the arrangement effectively improves the service performance of the lens driving motor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic configuration of a lens driving motor according to an embodiment of the present invention;

fig. 2 shows a cross-sectional view of the lens driving motor of fig. 1;

FIG. 3 shows an exploded view of the lens drive motor of FIG. 1;

fig. 4 is a schematic view showing an internal structure of the lens driving motor of fig. 1;

FIG. 5 is a schematic view showing a positional relationship among a housing, a driving magnet, and an upper spring of the lens driving motor in FIG. 1;

FIG. 6 is a schematic diagram showing the structure of the upper spring of the lens driving motor in one embodiment of the present invention;

FIG. 7 shows an enlarged view at A in FIG. 6;

FIG. 8 is a schematic diagram showing the structure of an upper spring of a lens driving motor in another embodiment of the present invention;

fig. 9 shows an enlarged view at B in fig. 8;

FIG. 10 shows a schematic view of a first substructure of the lower spring of the lens driving motor in an embodiment of the invention;

FIG. 11 shows a schematic view of a first substructure of the lower spring of a lens driving motor in another embodiment of the invention;

FIG. 12 is a schematic view showing a reinforcing structure of a base assembly of the lens driving motor in FIG. 3;

FIG. 13 is a schematic diagram showing the positional relationship of the base assembly of the lens driving motor of FIG. 3 and the lower spring;

FIG. 14 is a schematic view of the reinforcement structure of the base assembly of FIG. 13 in relation to the position of the lower spring;

FIG. 15 is a schematic view of the connection of the housing to the base assembly of FIG. 1;

fig. 16 is a schematic view showing a positional relationship between an upper cover and an upper spring of the lens driving motor in fig. 3;

fig. 17 is a schematic view showing a positional relationship between a lens support body and a lower spring of the lens driving motor in fig. 3;

FIG. 18 shows a schematic view of the upper spring of the lens driving motor of FIG. 3;

fig. 19 shows an enlarged view at C in fig. 18.

Wherein the figures include the following reference numerals:

10. a housing; 11. clamping the groove; 12. connecting the terminal pins; 20. a drive magnet; 30. a lens support; 40. a coil; 50. a lower spring; 51. a first substructure; 511. a first corner connecting piece; 512. a second corner connecting piece; 513. hot riveting holes; 514. connecting holes; 515. a cantilever section; 516. soldering tin holes; 517. a first connection section; 518. dispensing holes; 519. welding the hole; 52. a second substructure; 60. a base assembly; 61. a base body; 611. a first limiting wall; 612. dispensing a glue groove; 613. clamping the bulges; 614. carrying out hot riveting on the column; 62. a reinforcing structure; 621. welding a bump; 622. a conductive terminal pin; 623. a first stage; 624. a second stage; 70. a positioning column; 80. an upper cover; 81. a second limiting wall; 90. an upper spring; 91. an inner ring structure; 92. an outer ring structure; 93. a through hole; 94. glue dispensing seams; 95. an intermediate structure; 96. a U-shaped section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that lens motor performance is poor among the prior art, the application provides a lens driving motor, camera and mobile terminal.

And the mobile terminal in this application has the camera in this application.

The camera in the present application includes a lens driving motor described below.

And, the mobile terminal may be at least one of a mobile phone, a portable information terminal, and a notebook computer.

As shown in fig. 1 to 19, the lens driving motor in the present application includes a housing 10, a driving magnet 20, a lens support 30, a coil 40, a lower spring 50, and a base assembly 60, wherein the housing 10 is disposed on the base assembly 60 to form a receiving space therebetween, the driving magnet 20, the lens support 30, the coil 40, and the lower spring 50 are all disposed in the receiving space, the coil 40 is wound on the lens support 30, the driving magnet 20 is disposed corresponding to the coil 40, the lower spring 50 is disposed between the lens support 30 and the base assembly 60, and the base assembly 60 includes a base body 61 and a reinforcing structure 62. At least a part of the reinforcing structure 62 is embedded in the base body 61, and the reinforcing structure 62 includes a plurality of welding protrusions 621, four corners of the base body 61 are respectively and correspondingly provided with at least one welding protrusion 621, and each welding protrusion 621 extends out from one side of the base body 61 toward the lens support body 30, the lens support body 30 is connected with each welding protrusion 621 through the lower spring 50, the reinforcing structure 62 further includes at least two conductive terminal pins 622, and the conductive terminal pins 622 extend out from one side of the base body 61 away from the lens support body 30.

When the lens driving motor with the above structure is used, since the base assembly 60 includes the base body 61 and the reinforcing structure 62, the shock resistance of the base body 61 can be increased by the reinforcing structure 62, thereby effectively ensuring that the base assembly 60 is not deformed after the lens driving motor is shocked by impact. Because four corners of the base body 61 are respectively and correspondingly provided with at least one welding protrusion 621, the lower spring 50 can be electrically connected with the base assembly 60 by welding with the welding protrusions 621, and when the lower spring 50 is arranged in this way, the lower spring is disconnected from the base assembly 60 only after being disconnected from all the welding protrusions 621. Accordingly, the stability of the electrical connection between the lower spring 50 and the base assembly 60 is effectively secured by such an arrangement. Therefore, the arrangement effectively improves the service performance of the lens driving motor.

Note that, in the present application, the strength of the reinforcing structure 62 is greater than that of the base body 61. And the reinforcing structure 62 and the base body 61 may be of an integral injection molding structure.

Note that the lower spring 50 also has a welding hole 519 for welding with the welding projection 621.

It should also be noted that the reinforcing structure 62 is made of an electrically conductive material, since only then is electrical conduction through the terminal pins of the reinforcing structure 62 possible.

In one embodiment of the present application, the reinforcing structure 62 is embedded in the base body 61 by INSERT-MOLDING.

Specifically, the welding protrusion 621 is a bent structure, the bent structure at least includes a first section 623 and a second section 624 connected in sequence, the first section 623 extends from the base body 61 toward the lens support 30, and an included angle is formed between the second section 624 and the first section 623. By providing the welding projection 621 in a bent structure, welding between the lower spring 50 and the welding projection 621 can be made easier. And, the lower spring 50 is welded to the second segment 624 in an actual welding process. The first segment 623 is provided to be positioned such that the welding projection 621 can protrude from the base body 61.

Also, as shown in FIG. 12, in one particular embodiment, the angle between the first segment 623 and the second segment 624 is 90 degrees.

It is also noted that laser welding is performed between the lower spring 50 and the second segment 624 in the present application.

Specifically, the second segment 624 protrudes away from the center of the base body 61.

Specifically, the protruding directions of the second segments 624 of the welding projections 621 located on the same side of the base body 61 are uniform.

Specifically, the protruding directions of the second segments 624 of the welding protrusions 621 located at the opposite sides of the base body 61 are deviated.

By such an arrangement, it can be effectively ensured that the welding point of the lower spring 50 and the second section 624 is closer to the corner of the base body 61, and the welding between the lower spring 50 and the second section 624 is firmer.

Specifically, the height of each welding projection 621 is the same. By this arrangement, when the lens support 30 is in the rest state and is located at the initial position, the parallelism between the lower spring 50 and the base body 61 can be ensured.

Optionally, the length of the first segment 623 is less than the length of the second segment 624.

Alternatively, the ratio between the length of the first segment 623 and the length of the second segment 624 is 0.25 or more and 0.60 or less.

Specifically, the lower spring 50 includes a first sub-structure 51 and a second sub-structure 52 having the same structure, the first sub-structure 51 and the second sub-structure 52 are symmetrical about a diagonal center of the base body 61, and the first sub-structure 51 and the second sub-structure 52 are respectively connected to a group of two adjacent welding protrusions 621.

In one embodiment of the present application, the reinforcing structure 62 also has an insulating seam to prevent a short circuit between the two conductive terminal pins 622.

Alternatively, the reinforcing structure 62 may be formed of two parts, each part having one conductive terminal pin 622 and two solder bumps 621. And the two parts correspond one-to-one to the first and

second sub-structures

51 and 52, respectively.

It is noted that in the present application the same welding projection 621 is welded to only one of the first substructure 51 and the second substructure 52.

In one embodiment of the present application, the reinforcing structure 62 has four welding protrusions 621, and the four welding protrusions 621 are located at four corners of the base body 61, respectively. At this time, the first substructure 51 is welded to two adjacent welding bumps 621, and the second substructure 52 is welded to the other two adjacent welding bumps 621.

As shown in fig. 10, the first substructure 51 corresponds to a group of adjacent straight edges of the base body 61, and the first substructure 51 includes a first corner connecting sheet 511 and a second corner connecting sheet 512, and the first corner connecting sheet 511 and the second corner connecting sheet 512 respectively correspond to two adjacent corners of the base body 61, and the first corner connecting sheet 511 is located at an end of the first substructure 51, the second corner connecting sheet 512 is located at a middle of the first substructure 51, the first corner connecting sheet 511 is connected with the second corner connecting sheet 512 through a first connecting section 517, and a plurality of hot riveting holes 513 are disposed on both the first corner connecting sheet 511 and the second corner connecting sheet 512; at least one hot riveting column 614 is respectively arranged at four corners of the base body 61, and the hot riveting holes 513 correspond to the hot riveting columns 614 one by one. That is, in the present application, the lower spring 50 is welded not only to the reinforcing structure 62 but also to the base body 61. By doing so, the stability of the force applied among the lower spring 50, the base body 61, and the reinforcing structure 62 can be effectively ensured.

It should be noted that, since the first substructure 51 and the second substructure 52 have the same structure, the specific structure of the second substructure 52 will not be described.

Also, in one embodiment of the present application, two heat stakes 614 are provided at each corner of the base body 61.

It is further noted that the first substructure 51 is also welded to the corresponding welding projection 621 by the first and second

corner connecting tabs

511 and 512, respectively.

Specifically, the first substructure 51 further includes a plurality of connection holes 514, and one end of the first connection section 517 near the second substructure 52 is provided with the connection holes 514, the first connection section 517 is provided with the connection holes 514 at a position between the first corner connection sheet 511 and the second corner connection sheet 512, and the connection holes 514 are connected with the positioning posts 70 of the lens support body 30.

In two different embodiments as shown in fig. 10 and fig. 11, the first sub-structure 51 further has a dispensing hole 518, and the dispensing hole 518 is disposed on both sides of the connecting hole 514 and between the two thermal riveting holes 513, and dispensing can be performed through the dispensing hole 518.

Specifically, the first substructure 51 further includes a cantilever section 515 connected to the first connection section 517, a cantilever end of the cantilever section 515 is provided with at least one solder hole 516, and the lower spring 50 is connected to the winding post of the lens support 30 through the solder hole 516. In the present application, since the winding post is electrically connected to the coil 40, the lower spring 50 is electrically connected to the coil 40, and the coil 40 is ensured to be able to act on the driving magnet 20 after being energized.

As shown in fig. 3, the base body 61 includes two first limiting walls 611, one first limiting wall 611 is respectively disposed on a group of parallel opposite sides of the base body 61, and the first limiting walls 611 extend toward the lens support 30. The movement of the lens holder 30 can be limited by providing the first limiting wall 611, so that the lens holder 30 can move along a set position.

As shown in fig. 4, the base body 61 further includes a plurality of glue dispensing grooves 612, and the glue dispensing grooves 612 are disposed on the outer peripheral sidewall of the base body 61 at intervals.

Optionally, at least one glue dispensing groove 612 is disposed on a surface of the first limiting wall 611 on a side away from the lens support 30.

Through setting up some glue groove 612, can carry out the injecting glue between shell 10 and base body 61 to guarantee that can not appear rocking and guarantee stability between shell 10 and the base subassembly 60.

As shown in fig. 15, a plurality of clamping protrusions 613 are disposed at the edge of the base, and a clamping groove 11 matched with the clamping protrusions 613 is disposed on the housing 10.

Optionally, a plurality of clamping grooves 11 are formed in the edge of the base, and a clamping protrusion 613 matched with the clamping grooves 11 is formed in the housing 10.

The base body 61 and the housing 10 can be easily spliced by the engagement of the snap projection 613 and the snap groove 11, and the sealing performance of the entire lens driving motor can be effectively improved by such an arrangement.

Specifically, the lens driving motor further includes an upper cover 80, the upper cover 80 is disposed between the housing 10 and the lens support 30, the number of the driving magnets 20 is two, the two driving magnets 20 are respectively disposed on a set of opposite sides of the upper cover 80, the upper cover 80 includes two second limiting walls 81, the two second limiting walls 81 are disposed on the other set of opposite sides of the upper cover 80, the second limiting walls 81 are disposed in parallel with the first limiting walls 611 of the base body 61, and an installation gap is formed between the first limiting walls 611 and the second limiting walls 81 located on the same side. By providing the upper cover 80, it is possible to limit the installation of the driving magnet 20, and also to limit the movement of the lens support 30 and prevent the occurrence of impact between the lens support 30 and the housing 10. The second limiting wall 81 is also provided to ensure that the lens holder 30 can move in a predetermined direction. The purpose of providing the mounting gap between the first limiting wall 611 and the second limiting wall 81 is to ensure that the lens holder 30 has a sufficient movement space, thereby ensuring the focusing performance of the camera.

As shown in fig. 16 and 17, the lens driving motor further includes an upper spring 90, the upper spring 90 is disposed between the upper cover 80 and the driving magnet 20, the upper cover 80 and the lens support 30 respectively have a plurality of positioning posts 70, the upper cover 80 is connected to the upper spring 90 through the positioning posts 70, and the lens support 30 is connected to the upper spring 90 and the lower spring 50 through the positioning posts 70. With this arrangement, the impact of the lens support 30 on the base body 61 can be reduced by the upper spring 90.

Note that, in the present application, the lens support 30 has positioning posts 70 on both the side near the upper spring 90 and the side near the lower spring 50.

Specifically, the upper spring 90 includes an inner race structure 91 and an outer race structure 92. The inner ring structure 91 and the outer ring structure 92 are respectively provided with a plurality of through holes 93, the positioning posts 70 of the upper cover 80 are connected with the through holes 93 of the outer ring structure 92, and the positioning posts 70 on one side of the lens support 30 close to the upper cover 80 are connected with the through holes 93 of the inner ring structure 91. With this arrangement, the effect of the upper spring 90 on the movement of the lens support 30 can be effectively reduced.

Optionally, a plurality of glue seams 94 are further disposed on the outer ring structure 92, each glue seam 94 is communicated with the through hole 93, and the glue seams 94 are symmetrically disposed with respect to the through hole 93. By this arrangement, the dispensing operation can be performed through the dispensing slit 94, thereby reinforcing the gap between the upper cover 80 and the upper spring 90 and preventing the upper cover 80 from being separated from the upper spring 90. Moreover, the connection between the dispensing seam 94 and the through hole 93 is beneficial to absorbing excessive glue, so that the overflowing glue is prevented from influencing the appearance of the lens driving motor. On the other hand, the arrangement can better absorb the glue amount and increase the adhesive surface, thereby improving the bonding strength between the upper cover 80 and the upper spring 90 and ensuring that the connection between the upper cover 80 and the upper spring 90 is more reliable.

Specifically, the upper spring 90 further includes a plurality of intermediate structures 95 disposed at intervals, two ends of the plurality of intermediate structures 95 are respectively connected with the inner ring structure 91 and the outer ring structure 92, and the intermediate structures 95 have bending sections, and each bending section includes at least one U-shaped section 96.

When the upper spring 90 is designed, the yield stress and the maximum stress of the material need to be considered, the safety rate, the K value and the like of the upper spring are calculated, and meanwhile, all performance indexes of the lens driving motor reach the standard. The bend segments in this application comprise an irregular wire configuration of at least one U-shaped segment 96. The spring wire structure is compared through simulation, and has very high reliability, and stress distribution is reasonable, and the drive is symmetrical stable, and the difficult rupture of spring wire, security height.

It should be noted that the lower spring 50 may also have a U-shaped section 96.

It should be noted that the embodiment shown in fig. 6 and 7 and the other embodiment shown in fig. 8 and 9 respectively show two different design forms of the intermediate structure. In the embodiment shown in fig. 18 and 19, the upper spring 90 does not have a bead 94.

Specifically, the housing 10 further includes at least one connecting terminal 12, the connecting terminal 12 is disposed on a side of the housing 10 close to the base body 61, and a distance from an end of the connecting terminal 12 far away from the housing 10 to the lens support 30 is greater than a distance from the base body 61 to the lens support 30. By providing the connecting terminal pins 12, the lens driving motor can be more easily fixed inside the camera.

In addition, in the present application, the connection terminal 12 also has a grounding function, i.e., can conduct static electricity, thereby effectively preventing the electronic components from being burned out by static electricity and preventing static electricity from interfering with the operation of internal electric components.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the lens driving motor has better impact resistance, is safe and reliable in part connection, and effectively improves the service performance of the lens driving motor;

2. the strength of the base assembly 60 is improved, and the deformation of the base assembly 60 caused by the impact of the lens support 30 is effectively avoided;

3. simple structure, reasonable design and easy assembly.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The lens driving motor is characterized by comprising a shell (10), a driving magnet (20), a lens support body (30), a coil (40), a lower spring (50) and a base assembly (60), wherein the shell (10) is arranged on the base assembly (60) to form an accommodating space between the two, the driving magnet (20), the lens support body (30), the coil (40) and the lower spring (50) are both positioned in the accommodating space, the coil (40) is wound on the lens support body (30), the driving magnet (20) corresponds to the coil (40), the lower spring (50) is positioned between the lens support body (30) and the base assembly (60), and the base assembly (60) comprises:

a base body (61);

the lens support comprises a base body (61), a reinforcing structure (62), at least one part of the reinforcing structure (62) is embedded in the base body (61), the reinforcing structure (62) comprises a plurality of welding protrusions (621), at least one welding protrusion (621) is correspondingly arranged at each of four corners of the base body (61), each welding protrusion (621) extends out from one side of the base body (61) facing the lens support body (30), the lens support body (30) is connected with each welding protrusion (621) through a lower spring (50), the reinforcing structure (62) further comprises at least two conductive end pins (622), and the conductive end pins (622) extend out from one side of the base body (61) far away from the lens support body (30).

2. Lens driving motor according to claim 1, characterized in that said welding projection (621) is of a bent structure comprising at least a first segment (623) and a second segment (624) connected in sequence, and said first segment (623) protrudes from said base body (61) towards said lens support body (30), said second segment (624) having an angle with said first segment (623).

3. The lens driving motor of claim 2,

the second segment (624) projects away from the center of the base body (61); and/or

The extending directions of the second sections (624) of the welding protrusions (621) on the same side of the base body (61) are consistent; and/or

The direction of projection of the second section (624) of the welding projection (621) on the opposite side of the base body (61) is directed away.

4. The lens driving motor of claim 2,

the heights of the welding bulges (621) are the same; and/or

The length of the first segment (623) is less than the length of the second segment (624); and/or

The ratio between the length of the first segment (623) and the length of the second segment (624) is greater than or equal to 0.25 and less than or equal to 0.60.

5. The lens driving motor according to any one of claims 1 to 4, wherein the lower spring (50) comprises a first substructure (51) and a second substructure (52) having the same structure, the first substructure (51) and the second substructure (52) are symmetrical with respect to a diagonal center of the base body (61), and the first substructure (51) and the second substructure (52) are respectively connected to a set of two adjacent welding protrusions (621).

6. Lens driving motor according to claim 5, wherein the first substructure (51) corresponds to a set of adjacent straight sides of the base body (61), and the first substructure (51) comprises a first corner connection tab (511) and a second corner connection tab (512), and the first corner connection tab (511) and the second corner connection tab (512) correspond to two adjacent corners of the base body (61), respectively, and the first corner connection tab (511) is located at an end of the first substructure (51), the second corner connection tab (512) is located in a middle of the first substructure (51), the first corner connection tab (511) is connected to the second corner connection tab (512) by a first connection section (517), a plurality of hot riveting holes (513) are provided on each of the first corner connection tab (511) and the second corner connection tab (512), at least one hot riveting column (614) is arranged at each of four corners of the base body (61), and the hot riveting holes (513) are in one-to-one correspondence with the hot riveting columns (614).

7. The lens driving motor of claim 6, wherein the first substructure (51) further comprises a plurality of connection holes (514), and one end of the first connection section (517) near the second substructure (52) is provided with the connection holes (514), the first connection section (517) is provided with the connection holes (514) at a position between the first corner connection piece (511) and the second corner connection piece (512), and the connection holes (514) are connected with the positioning posts (70) of the lens support body (30).

8. The lens driving motor of claim 6, wherein the first substructure (51) further comprises a cantilever section (515) connected to the first connection section (517), a cantilever end of the cantilever section (515) is provided with at least one solder hole (516), and the lower spring (50) is connected to the winding post of the lens support (30) through the solder hole (516).

9. Lens driving motor according to any of claims 1 to 4, wherein the base body (61) comprises two first limiting walls (611), one first limiting wall (611) is provided on each of a set of parallel opposite sides of the base body (61), and the first limiting walls (611) protrude towards the lens support (30).

10. The lens driving motor of claim 9, wherein the base body (61) further comprises a plurality of glue wells (612),

the glue dispensing grooves (612) are arranged on the peripheral side wall of the base body (61) at intervals; and/or

The surface of one side of the first limiting wall (611) far away from the lens support body (30) is provided with at least one dispensing groove (612).

11. The lens driving motor according to any one of claims 1 to 4,

a plurality of clamping protrusions (613) are arranged at the edge of the base body (61), and a clamping groove (11) matched with the clamping protrusions (613) is arranged on the shell (10); or

The edge of base body (61) is provided with a plurality of joint recesses (11), be provided with on shell (10) with joint recess (11) complex joint arch (613).

12. The lens driving motor according to any one of claims 1 to 4, further comprising an upper cover (80), wherein the upper cover (80) is disposed between the housing (10) and the lens support body (30), the number of the driving magnets (20) is two, the two driving magnets (20) are respectively disposed on one pair of opposite sides of the upper cover (80), the upper cover (80) comprises two second limit walls (81), the two second limit walls (81) are disposed on the other pair of opposite sides of the upper cover (80), and the second limit walls (81) are disposed in parallel with the first limit walls (611) of the base body (61), and a mounting gap is provided between the first limit walls (611) on the same side as the second limit walls (81).

13. The lens driving motor according to claim 12, further comprising an upper spring (90), wherein the upper spring (90) is disposed between the upper cover (80) and the driving magnet (20), the upper cover (80) and the lens support body (30) have a plurality of positioning posts (70), respectively, the upper cover (80) is connected to the upper spring (90) through the positioning posts (70), and the lens support body (30) is connected to the upper spring (90) and the lower spring (50) through the positioning posts (70), respectively.

14. The lens driving motor according to claim 13, wherein the upper spring (90) comprises:

an inner ring structure (91);

the lens support body comprises an outer ring structure (92), the inner ring structure (91) and the outer ring structure (92) are respectively provided with a plurality of through holes (93), positioning columns (70) of the upper cover (80) are connected with the through holes (93) of the outer ring structure (92), and the positioning columns (70) on one side of the lens support body (30) close to the upper cover (80) are connected with the through holes (93) in the inner ring structure (91).

15. The lens driving motor according to claim 14, wherein a plurality of adhesive dispensing slits (94) are further formed in the outer ring structure (92), each adhesive dispensing slit (94) is communicated with the through hole (93), and the adhesive dispensing slits (94) are symmetrically arranged with respect to the through hole (93).

16. The lens driving motor according to claim 14, wherein the upper spring (90) further comprises a plurality of spaced intermediate structures (95), both ends of the plurality of intermediate structures (95) are respectively connected with the inner ring structure (91) and the outer ring structure (92), and the intermediate structures (95) have bending sections, and the bending sections comprise at least one U-shaped section (96).

17. Lens driving motor according to any of claims 1 to 4, characterized in that the housing (10) further comprises at least one connecting terminal pin (12), the connecting terminal pin (12) is arranged on the side of the housing (10) close to the base body (61), and the distance from the end of the connecting terminal pin (12) remote from the housing (10) to the lens support body (30) is larger than the distance from the base body (61) to the lens support body (30).

18. A camera characterized by comprising the lens driving motor of any one of claims 1 to 17.

19. A mobile terminal characterized by comprising the camera of claim 18.

20. The mobile terminal of claim 19, wherein the mobile terminal comprises at least one of a mobile phone, an information carrying terminal, and a notebook computer.