Motor and forming method

Abstract

The invention provides a motor and a forming method, the motor comprises a base, a lens supporting body, an anti-shake driving assembly and an elastic assembly, the lens supporting body is arranged above the base, the lens supporting body is provided with a light passing axis, a part of the anti-shake driving assembly is arranged on the base, the anti-shake driving assembly further comprises an anti-shake frame, and the elastic assembly is arranged on the anti-shake frame. The lens supporting body is arranged in the anti-shake frame in an elastic supporting mode in the direction of the light passing axis, the elastic assembly is arranged between the lens supporting body and the anti-shake frame, and the elastic assembly is further arranged between the anti-shake frame and the base. The thickness of at least part of the elastic assembly is increased in the direction of the optical axis, at least part of the elastic assembly extends on the plane perpendicular to the direction of the optical axis to form a structure, the thickness of the elastic assembly is increased in the direction of the optical axis to provide elastic force, the size of the elastic piece does not need to be expanded, and therefore the elastic piece is small in size and high in reliability. However, the elastic force of the motor is still large.

Description

Technical Field

[0001] This application relates to the field of microelectronic products, and particularly to a motor for optical image stabilization and a forming method thereof. Background Art

[0002] With the increasing demand of consumers for mobile phone photography, the functions of mobile phone camera modules are becoming more and more abundant. Functions such as portrait shooting, telephoto shooting, optical zoom, and optical image stabilization are integrated in a camera module with limited volume. Among them, functions such as autofocus, optical image stabilization, and optical zoom often need to rely on optical actuators (also known as motors) to achieve. As a structurally compact electronic product, the mobile phone camera module needs to be equipped with a micro motor. For the requirement of small size of the motor, in the prior art, several sets of bent elastic sheets are often arranged between the fixed seat and the moving carrier in the motor to connect them. During the focusing or image stabilization process, the elastic sheets (which can also be called reed sheets) support the moving carrier and can return the moving carrier after the focusing or image stabilization is completed.

[0003] There are many problems with the existing elastic sheets. On the one hand, the rigidity at the bent part of the elastic sheet is large. After the bending process treatment of multiple elastic sheets, it is difficult to ensure the consistency of each individual. The poor consistency of the elastic sheets will affect the driving accuracy of each individual motor, thereby affecting the product performance of the camera module. On the other hand, if the elastic sheet is used as a supporting element for optical image stabilization, if there are cracks generated due to the bent part or different angles generated after bending of the elastic sheet in multiple directions of image stabilization, resulting in different elastic coefficients in each direction, it may cause too large a difference in the elastic recovery coefficients in each direction of the elastic sheet, so that the driving force for optical image stabilization needs to be calibrated specifically for each motor.

[0004] In the prior art, the actual optical image stabilization stroke of the motor will also be reduced due to compensating for manufacturing errors. For example, due to different bending angles of the elastic sheets and different elastic coefficients of each individual elastic sheet, the deformable stroke of the elastic sheet will also be different, which will result in different mechanical strokes and different initial positions (the initial position is the in-situ or central position of the camera module) between individual motors. This will lead to different effective image stabilization strokes of the motors. Even if targeted compensation burning is performed on motors of the same batch, different individual differences will still occur, and there will always be a situation where an individual motor cannot be compensated and calibrated due to excessive manufacturing errors, which may lead to poor motor stroke conditions.

[0005] In summary, the current design of the motor needs to take manufacturing differences into account. Due to manufacturing errors, a motor with a mechanical stroke much larger than the anti-shake stroke will be designed according to the anti-shake stroke (the mechanical stroke is the movable stroke of the motor, and the initial position of the motor also needs to be considered). This determines that the size of the motor's elastic piece can only be designed larger to compensate for manufacturing errors. Designing the elastic piece larger will also cause the sizes of other components of the motor to become larger, ultimately resulting in an increase in the overall size of the motor. In existing motors, the design method of expanding the size of the motor to compensate for the inaccuracy of the elastic piece will lead to redundant motor structures. Therefore, a new motor structure is needed now, especially a technical solution to improve the consistency performance of the motor's elastic piece, so as to solve at least one of the above problems. Summary of the Invention

[0006] The present application provides a motor, including a base, a lens support, an anti-shake drive assembly, and an elastic assembly. The lens support is disposed above the base. The lens support has a light passing axis. A part of the anti-shake drive assembly is disposed on the base. The anti-shake drive assembly further includes an anti-shake frame. The lens support is elastically supported along the light passing axis direction within the anti-shake frame. The elastic assembly is disposed between the lens support and the anti-shake frame, and the elastic assembly is also disposed between the anti-shake frame and the base. At least part of the elastic assembly has an increased thickness along the light passing axis direction, and at least part of the elastic assembly extends its structure in a plane perpendicular to the light passing axis direction. By increasing the thickness of the elastic assembly in the light passing axis direction to provide an elastic force, it is not necessary to expand the size of the elastic piece, thereby providing a motor with a smaller size but still a large elastic force.

[0007] To address the above problems, the present application further provides a motor for optical image stabilization, including a housing, a base. The housing covers the base and forms an accommodation space with the housing. A lens support having a light passing axis, a focusing drive assembly for driving the lens support to move along the light passing axis direction, an anti-shake drive assembly. The anti-shake drive assembly further includes an anti-shake frame. The lens support is elastically supported along the light passing axis direction within the anti-shake frame. An elastic assembly is disposed between the lens support and the anti-shake frame, and the elastic assembly is also disposed between the anti-shake frame and the base. At least part of the elastic assembly is made of silicon and metal materials, and the elastic coefficients of the elastic assembly in two directions of optical image stabilization differ by within 2 times, thereby providing a silicon-metal elastic piece motor with similar elastic coefficients in all directions to reduce the movement tilt of the motor.

[0008] These and other objects, features, and advantages of the present application are fully embodied through the following detailed description, drawings, and claims. Brief Description of the Drawings

[0009] The embodiments of the present application will be described in more detail with reference to the accompanying drawings, and the above and other objects, features, and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application, and do not constitute a limitation to the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0010] Figure 1 The exploded schematic diagram of the motor structure according to an embodiment of the present application is shown.

[0011] Figure 2 The cross-sectional schematic diagram of the motor structure according to an embodiment of the present application is shown.

[0012] Figure 3 The schematic diagram of the motor structure according to an embodiment of the present application is shown.

[0013] Figure 4 The schematic diagram of the elastic component structure according to an embodiment of the present application is shown.

[0014] Figure 5 The partially enlarged schematic diagram of the structure of the elastic component according to an embodiment of the present application is shown.

[0015] Figure 6 The partially enlarged schematic diagram of the structure of the elastic component according to an embodiment of the present application is shown.

[0016] Figure 7 The schematic flow chart of the molding of the elastic component according to an embodiment of the present application is shown.

[0017] Figure 8 The schematic diagram of the elastic component structure according to an embodiment of the present application is shown.

[0018] Figure 9 The schematic diagram of the elastic component structure according to an embodiment of the present application is shown. Detailed Description of the Specific Embodiments

[0019] Next, exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention. It should be understood that the present invention is not limited by the exemplary embodiments described herein.

[0020] In the description of the present invention, it should be noted that for orientation terms, such as the terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence.

[0022] The terms "comprising" and "having" in the description and claims of the present application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0023] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or connected by contact or indirectly through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Attached Figures 1-7 shows a motor for optical image stabilization of the present application. Attached Figure 1Schematically shows a motor according to an embodiment of the present application. The motor 1 for optical image stabilization includes a housing 60 and a base 50. The housing 60 covers the base 50 and forms an accommodation space with the housing 60. A lens support 40 has an optical axis 401. A focusing drive assembly 20, a part of the focusing drive assembly 20 is disposed on the lens support 40. The focusing drive assembly 20 is used to drive the lens support 40 to move along the direction of the optical axis 401. An anti-shake drive assembly 30, a part of the anti-shake drive assembly 30 is disposed on the base 50. The anti-shake drive assembly 30 further includes an anti-shake frame 303. The lens support 40 is elastically supported along the direction of the optical axis 401 within the anti-shake frame 303. The anti-shake frame 303 is elastically supported in a plane perpendicular to the optical axis 401 on the base 50. The anti-shake frame 303 can move freely in a plane perpendicular to the optical axis 401 to achieve image stabilization. The technical solution is to obtain a motor that realizes optical image stabilization. In addition, the motor can also realize focusing. With the user's pursuit of the camera function, a motor that combines focusing and optical anti-shake functions will give users a better experience.

[0025] Still referring to the attached Figure 3 As shown, in this embodiment, the motor 1 further includes an elastic component 10. The elastic component 10 is disposed between the lens support 40 and the anti-shake frame 303. The elastic component 10 is also disposed between the anti-shake frame 303 and the base 50. At least part of the elastic component 10 is made of silicon and metal materials. The elastic coefficients of the elastic component 10 in two directions of optical image stabilization differ by within 2 times. In this embodiment, the elastic component 10 made of silicon and metal materials can be integrally formed by a semiconductor-level forming process with high forming accuracy. In the prior art, the bending part of the elastic sheet has a large rigidity, and it is difficult to ensure the consistency of the bending angles of multiple elastic sheets. It may occur that the bending angles of some elastic sheets are 89°, 90°, 91°. These differences in bending angles may lead to poor consistency of the elastic sheets, thus affecting the driving accuracy of the motor and the product performance of the camera module. On the other hand, if the elastic sheet is used as a supporting element in the direction of optical anti-shake (generally, anti-shake in the X-Y plane in the industry), if there are cracks due to bending or different bending angles in multiple directions of anti-shake, it may cause too large differences in the elastic recovery coefficients of each direction of the elastic sheet, resulting in poor optical anti-shake effect. For example, if the elastic coefficient in the X direction is larger than that in the Y direction due to the bending angle, it may cause the driving stroke to deviate when the rated driving force (the acting force of the coil magnet) of the motor drives the motor to move.

[0026] More importantly, in the present application, the elastic component 10 is disposed between the lens support 40 and the anti-shake frame 303, and the elastic component 10 is also disposed between the anti-shake frame 303 and the base 50. At least a part of the elastic component 10 has an increased thickness in the direction along the optical axis 401, and at least a part of the elastic component 10 has an extended structure in a plane perpendicular to the optical axis 401. Refer to the appendix Figure 3 shown. It can be seen that there is an elastic member part on the outer side of the elastic component 10 in the direction along the optical axis 401. The outer elastic member is used to provide an elastic supporting force in the plane direction perpendicular to the optical axis 401. Those skilled in the art should know that in the prior art, most metal shrapnel are formed by chemically etching metal sheets. Therefore, in the prior art, metal shrapnel are all in the shape of thin sheets, and it is very difficult to increase the thickness in the direction of elastic support or perpendicular to the elastic support direction. In the present application, a forming method different from stamping metal sheets is adopted, which can realize that the elastic component 10 has an increased thickness in the direction along the optical axis 401, thereby providing a greater elastic supporting force. Still refer to the appendix Figure 3 shown. The outer elastic member has an extended structure in a plane perpendicular to the optical axis 401. Referring to the figure, the structure of the outer elastic member extends from the middle of one side to the middle of the adjacent side and turns at the corner. This extended structure provides the elastic supporting force of the elastic component in the plane direction perpendicular to the optical axis 401. That is to say, in the present application, the elastic component 10 adopts a forming method different from stamping metal sheets in the prior art, and can realize that while the elastic component 10 has an extended structure, it maintains a certain thickness in the direction along the optical axis 401, realizing a small-sized elastic component 10 but having a large elastic restoring force.

[0027] It is worth mentioning that, refer to the appendix Figure 3 shown. The elastic component 10 includes elastic member parts arranged in parallel. In the appendix Figure 3 , the outer elastic member includes 3 elastic members arranged in parallel. Those skilled in the art should know that in the prior art, most metal shrapnel are formed by chemically etching or stamping metal sheets, which limits the shape of the shrapnel. The requirements of the chemical etching process are that the thickness of the shrapnel cannot be too large in the plane where the structure of the shrapnel extends. The prior art also limits the arrangement direction of the elastic members to a single tree branch shape. The shrapnel component 10 in the present application can include elastic member parts arranged in parallel, so as to further ensure that a large elastic force is provided in the case of small-sized elastic members.

[0028] Refer to the appendix Figure 3As shown, in this embodiment, the elastic component 10 further includes a first frame 103, a second frame 102, and a suspension component 101. The first frame 103 is disposed around the outside of the second frame 102. The suspension component 101 is disposed between the first frame 103 and the second frame 102. The suspension component 101, the first frame 103, and the second frame 102 are formed together in an integrally molded manner. The suspension component 101 is formed of silicon and a metal material. By adjusting the relative content of the silicon and the metal material in the suspension component 101, the elastic coefficient of the suspension component 101 can be adjusted. By adjusting the ratio of this silicon and metal material, it is possible to adjust the ratio of the material with high rigidity and the material with low rigidity to obtain suspension components 101 with different elastic coefficients, thereby meeting different design requirements. It is worth mentioning that the suspension component 101 expands in thickness along the direction of the optical axis 401, the suspension component 101 extends the structure in a plane perpendicular to the optical axis 401, and the suspension component 101 includes elastic member portions arranged in parallel. Thus, the suspension component 101 can achieve a design with a small size but a large elastic coefficient, so as to reduce the size of the elastic structure in the motor and improve the individual consistency of the elastic members at the same time.

[0029] Reference appendix Figure 4 As shown, in this embodiment, the suspension component 101 further includes a first-direction elastic structure 1011 and a second-direction elastic structure 1012. Among them, the first-direction elastic structure 1011 and the second-direction elastic structure 1012 have different elastic recovery directions respectively. The elastic recovery directions of the first-direction elastic structure 1011 and the second-direction elastic structure 1012 are perpendicular to the optical axis 401. The difference between the first-direction elastic recovery coefficient of the first-direction elastic structure 1011 and the second elastic recovery coefficient of the second-direction elastic structure 1012 is within 0.8 - 1.2 times. The first-direction elastic structure 1011 and the second-direction elastic structure 1012 are integrally molded. Both the first-direction elastic structure 1011 and the second-direction elastic structure 1012 are formed of silicon and a metal material. By using the semiconductor-level molding process to mold with this silicon and metal material, the accuracy of the elastic coefficients in each direction can be improved. As a result, under the same-sized motor, because the manufacturing error is reduced, relatively speaking, the mechanical stroke that the motor needs to compensate is reduced, and the driving stroke of the motor can be relatively larger.

[0030] In the prior art, the actual optical image stabilization (OIS) stroke of a motor is also reduced due to compensating for manufacturing errors. For example, due to different bending angles of the shrapnel, different elastic coefficients of individual shrapnel, and different deformable strokes of the shrapnel, the mechanical strokes between individual motors and the initial positions between individual motors will be different (the initial position is the in-situ position or the central position of the camera module), which results in different effective OIS strokes of the motors. Even if targeted compensation programming is performed on motors of the same batch, different individual differences will still occur, and there will always be cases where individual motors cannot be compensated and calibrated due to excessive manufacturing errors.

[0031] Currently, the design of the motor needs to consider manufacturing differences. That is, due to manufacturing errors, a motor with a mechanical stroke much larger than the OIS stroke will be designed according to the OIS stroke (the mechanical stroke is the movable stroke of the motor, and the initial position of the motor also needs to be considered). This determines that the size of the shrapnel of the motor can only be designed to be larger to compensate for manufacturing errors. Designing the shrapnel size to be larger will also cause the sizes of other components of the motor to be larger, ultimately resulting in an increase in the overall size of the motor. The existing design method of expanding the size of the motor due to inaccurate shrapnel requires a new shrapnel structure to solve. The method of forming this silicon and metal material using semiconductor-level forming processes in this embodiment can improve the accuracy of the elastic coefficient in all directions, so that under the same OIS stroke specifications, this embodiment can provide a more compact design to reduce the size of the motor.

[0032] Still referring to the appendix Figure 1As shown, the anti-shake drive assembly 30 further includes an anti-shake coil 301 and an anti-shake magnet 302. The anti-shake coil 301 is disposed on the base 50, and the anti-shake magnet 302 is disposed on the anti-shake frame 303. The anti-shake frame 303 is in a frame shape. The number of both the anti-shake magnet 302 and the anti-shake coil 301 is four. Each anti-shake magnet 302 is disposed opposite to each anti-shake coil 301 in the direction of the optical axis 401. The focusing drive assembly 20 further includes a focusing coil 201 and a focusing magnet 202. Among them, the focusing coil 201 and the focusing magnet 202 are disposed opposite to each other in the direction perpendicular to the optical axis 401. The focusing coil 201 is disposed around the lens support 40, and the focusing magnet 202 is disposed on the anti-shake frame 303. The focusing magnet 202 and the anti-shake magnet 302 are at least partially the same. In this embodiment, the anti-shake coil 301 and the anti-shake magnet 302 can interact with each other to generate an anti-shake driving force. The anti-shake coil 301 is disposed on the base 50. The number of the anti-shake coils 301 can be four, and the four anti-shake coils 301 are disposed on the four sides of the base 50 to achieve driving in at least two directions and realize image anti-shake. Those skilled in the art should know that the four anti-shake coils 301 can also be first installed on a circuit board and then installed on the base 50. However, in this embodiment, the base 50 can have an internal circuit, and finally the conductive terminal 70 is externally disposed on an outer end of the base 50, so that the motor in this embodiment can be electrically connected to the circuit in an external manner, facilitating the conductive process of the motor.

[0033] More specifically, in this embodiment, still referring to the attached Figure 1 As shown, the anti-shake magnet 302 is disposed on the anti-shake frame 303. The anti-shake frame 303 is generally in a frame shape, and the number of the anti-shake magnets 302 is also four. Each anti-shake magnet 302 is disposed opposite to each anti-shake coil 301 in the direction of the optical axis 401. Under the control of the anti-shake magnet 302, the anti-shake coil 301 can generate a Lorentz force to drive the anti-shake frame 303 to move. After the anti-shake coil 301 is energized, it is affected by the Ampere force in the magnetic field and moves relative to the anti-shake magnet 302. In this embodiment, the anti-shake coil 301 is fixedly disposed on the base 50, and the anti-shake magnet 302 is installed on the anti-shake frame 303. Therefore, the anti-shake magnet 302 can drive the anti-shake frame 303 to move. Since the relative movement relationship between the lens support 40 and the anti-shake frame 303 in this embodiment is that it can move along the direction of the optical axis 401, and in the plane direction perpendicular to the optical axis 401, the lens support 40 and the anti-shake frame 303 cannot move. Therefore, the anti-shake frame 303 can also drive the lens support 40 to perform anti-shake movement in the plane direction perpendicular to the optical axis 401.

[0034] Referring to the attachedFigure 2 , attached Figure 3 and attached Figure 4 As shown, the suspension assembly 101 further includes a third-direction elastic structure 1013. The third-direction elastic structure 1013 has an elastic recovery direction along the optical axis 401. The upper end face of the lens support 40 is mounted on the upper side of the anti-shake frame 303 through the third-direction elastic structure 1013, and the lower end face of the lens support 40 is also mounted on the lower side of the anti-shake frame 303 through the third-direction elastic structure 1013. In this embodiment, the third-direction elastic structure 1013 has a degree of freedom along the optical axis 401, that is, the third-direction elastic structure 1013 can be deformed along the optical axis 401. In this embodiment, the upper end face of the lens support 40 is mounted on the upper side of the anti-shake frame 303 through the third-direction elastic structure 1013, and the lower end face of the lens support 40 is also mounted on the lower side of the anti-shake frame 303 through the third-direction elastic structure 1013. The lens support 40 can be supported in the anti-shake frame 303 in a manner of being supported at both the upper and lower ends by the third-direction elastic structure 1013. In this embodiment, through the balanced design of adapting the gravity of the lens support 40 and the lens and the elastic force of the third-direction elastic structure 1013, the lens support 40 can start the focusing process in a "centered" state in the initial position state, thereby being able to accelerate the focusing time.

[0035] Attached Figure 4 Illustrates an implementation manner of a suspension assembly 101 of the present application, wherein the third-direction elastic structure 1013 includes a first focusing spring piece 10131, a second focusing spring piece 10132, an inner clamping portion 10133, and an outer clamping portion 10134. The inner edge of the second frame 102 surrounds a rectangle. The first focusing spring piece 10131 and the second focusing spring piece 10132 are rotationally symmetric with respect to the center of the rectangle surrounded by the inner edge of the second frame 102. The first focusing spring piece 10131 and the second focusing spring piece 10132 are clamped on the second frame 102 through the outer clamping portion 10134. A part of the circuit of the focusing coil 201 is conducted by the first focusing spring piece 10131, and another part of the circuit of the focusing coil 201 is conducted by the second focusing spring piece 10132. The first focusing spring piece 10131 and the second focusing spring piece 10132 are clamped on the lens support 40 through the inner clamping portion 10133. The circuit formed by the first focusing spring piece 10131 is extended by the second frame 102, and the circuit formed by the second focusing spring piece 10132 is extended by the second frame 102.

[0036] Refer to attached Figure 4As shown, in this embodiment, the structure of the first focusing elastic piece 10131 is rotationally symmetric with that of the second focusing elastic piece 10132. The inner edge of the second frame 102 is surrounded into a rectangle. The first focusing elastic piece 10131 and the second focusing elastic piece 10132 are rotationally symmetric about the center of the rectangle surrounded by the inner edge of the second frame 102. The first focusing elastic piece 10131 includes an inner clamping portion 10133 and an outer clamping portion 10134. The first focusing elastic piece 10131 is clamped on the second frame 102 through the inner clamping portion 10133. In this application, the second frame 102 is made by semiconductor process. Therefore, the second frame 102 uses a material that is easy to etch, engrave or eliminate, and various shapes can be formed from the material. Due to the easy forming property of this material, a complex integrated elastic piece structure can be formed. In addition, since the second frame 102 is formed by a semiconductor-level forming process, the formed precision is relatively high, which can make the assembly precision of the first focusing elastic piece 10131 and the second focusing elastic piece 10132 relatively high, thereby improving the movement parallelism of the motor.

[0037] Refer to the attached Figure 3 and 4 As shown, the first focusing elastic piece 10131 is installed on the lens support 40 through the inner clamping portion 10133. The second focusing elastic piece 10132 is also installed on the lens support 40 through the inner clamping portion 10133. The first focusing elastic piece 10131 and the second focusing elastic piece 10132 are symmetrically arranged with each other, so that the lens support 40 can be supported in a symmetric manner, and thus the lens support 40 can be relatively balancedly supported in the direction of the optical axis 401.

[0038] Refer to the attached Figure 4 As shown, in this embodiment, the elastic piece needs to directly support the lens support 40. With the development of the technology of the current camera module, the size of the photosensitive chip is getting larger and larger. Correspondingly, the size of the lens is also getting larger and larger. When the lens becomes larger, the weight of the lens also becomes heavier. Therefore, in this embodiment, the higher the stiffness requirement of the third-direction elastic structure 1013 is. If it is still made of semiconductor material, it may cause the elastic force of the third-direction elastic structure 1013 not to meet the requirements. When the third-direction elastic structure 1013 is made of copper sheet in this embodiment, the stiffness of the third-direction elastic structure 1013 can be improved, and at the same time, it can also have a relatively long service life. In this embodiment, due to the relatively high forming precision of the second frame 102, the accuracy of the elastic component 10 can be ensured.

[0039] Refer to the attached Figure 4As shown, in this embodiment, the suspension assembly 101 further includes a turning portion 1014 disposed between the first-direction elastic structure 1011 and the second-direction elastic structure 1012. The rigidity of the turning portion 1014 is greater than that of the first-direction elastic structure 1011, and the rigidity of the turning portion 1014 is also greater than that of the second-direction elastic structure 1012. In this embodiment, due to the relatively large rigidity of the turning portion 1014, it can resist relatively large deformations, and at the same time, it can also constrain the deformation direction of the suspension assembly 101, thereby improving the strength of the suspension assembly 101 and ensuring the reliability of the suspension assembly 101.

[0040] Refer to the attached Figure 5 As shown, in this embodiment, a first-direction constrained deformation section 10111 and a first-direction elastic deformation section 10112 are provided on the first-direction elastic structure 1011. The first-direction constrained deformation section 10111 and the first-direction elastic deformation section 10112 extend integrally. A second-direction constrained deformation section 10121 and a second-direction elastic deformation section 10122 are provided on the second-direction elastic structure 1012. The second-direction constrained deformation section 10121 and the second-direction elastic deformation section 10122 extend integrally. The rigidity of the first-direction constrained deformation section 10111 is greater than that of the first-direction elastic deformation section 10112, and the rigidity of the second-direction constrained deformation section 10121 is greater than that of the second-direction elastic deformation section 10122. In this embodiment, by providing the constrained deformation sections as the parts with relatively large rigidity to constrain the deformation direction of the first-direction elastic structure 1011, the first-direction elastic structure 1011 can be made to deform in the constrained direction and is not easily caused to collide and break due to random deformation and contact with other structural surfaces. Relatively, by providing the second-direction constrained deformation section 10121 with relatively large rigidity, the second-direction elastic structure 1012 can be made to deform in the constrained direction and is not easily caused to collide and break due to random deformation and contact with other structural surfaces.

[0041] Refer to the attached Figure 5 As shown, in this embodiment, the thickness of the first-direction constrained deformation section 10111 is thicker than that of the first-direction elastic deformation section 10112, and the thickness of the second-direction constrained deformation section 10121 is thicker than that of the second-direction elastic deformation section 10122. Since the first-direction elastic structure 1011 and the second-direction elastic structure 1012 are formed by a semiconductor-level forming process, it is more convenient to provide rigidity by forming relatively thick parts in the integral forming structure.

[0042] Refer to the attached Figure 5As shown, it is worth mentioning that in this embodiment, the first-direction constraint deformation section 10111 is arranged in the middle of the first-direction elastic structure 1011, which enables the first-direction elastic deformation sections 10112 to be respectively arranged on both sides of the first-direction constraint deformation section 10111. The first-direction constraint deformation section 10111 can achieve that the rigid binding force can exactly constrain the middle section of the first-direction elastic structure 1011, so as to reduce the excessive moment generated by the relatively rigid part of the first-direction elastic deformation section 10112, which may cause the first-direction elastic structure 1011 to collide and break due to random deformation and contact with other structural surfaces.

[0043] Refer to the appendix Figure 5 As shown, correspondingly, in this embodiment, the second-direction constraint deformation section 10121 is arranged in the middle of the second-direction elastic structure, which enables the second-direction elastic deformation sections 10122 to be respectively arranged on both sides of the second-direction constraint deformation section 10121. The second-direction constraint deformation section 10121 can achieve that the rigid binding force can exactly constrain the middle section of the second-direction elastic structure 1012, so as to reduce the excessive moment generated by the relatively rigid part of the second-direction elastic deformation section 10122, which may cause the second-direction elastic structure 1012 to collide and break due to random deformation and contact with other structural surfaces.

[0044] Refer to the appendix Figure 5 As shown, in this embodiment, the first-direction elastic structure 1011 is composed of a sheet-like structure of three groups of first-direction constraint deformation sections 10111 and first-direction elastic deformation sections 10112 stacked along the direction of the optical axis 401. The second-direction elastic structure 1012 is composed of a sheet-like structure of three groups of second-direction constraint deformation sections 10121 and second-direction elastic deformation sections 10122 stacked along the direction of the optical axis 401. By adjusting the distance between the two groups, the elastic coefficient of the suspension assembly 101 can be adjusted. Those skilled in the art should know that the more the number of the first-direction constraint deformation sections 10111 and the first-direction elastic deformation sections 10112 groups is set, the greater the rigidity is. The scheme of adopting three groups in this embodiment is designed and can meet the elastic coefficient requirements of the motor. Of course, according to the elastic coefficient requirements, one group, two groups or other numbers can also be configured.

[0045] In this embodiment, specifically, the first-direction elastic structure 1011 is composed of three silicon steel sheets, and the second-direction elastic structure 1012 is also composed of three silicon steel sheets. The silicon steel sheet is composed of silicon material and steel material. In the structure formed by this silicon and steel, since the mixing scheme of silicon material and steel material can provide stronger rigidity and better reliability effect, it can meet the elastic coefficient requirements of the motor. Of course, according to the elastic coefficient requirements, the combination of silicon material and copper material, silicon material and aluminum material, or silicon material and silver material can also be used.

[0046] In this embodiment, the focusing coil 201 and the diagonal magnet are arranged opposite to each other along the optical axis direction. The focusing coil 201 is disposed around the lens support 40, and the focusing magnet 202 is disposed on the base 50. Since the electromagnetic force generated by the focusing coil 201 and the focusing magnet 202 is parallel to the optical axis direction, the lens support 40 can move along the optical axis direction. The lens support 40 can drive the lens installed in the lens support 40 to move together, so that the lens performs a focusing movement.

[0047] More specifically, the anti-shake coil 301 can further include an X-direction coil and a Y-direction coil. The X direction is a direction perpendicular to the plane of the light passing axis 401, and the Y direction is another direction perpendicular to the plane of the light passing axis 401. The X direction and the Y direction are also perpendicular to each other.

[0048] The X-direction coil is wound around the opposite sides of the motor in the X direction, and the Y-direction coil is wound around the opposite sides of the motor in the Y direction. The conductive terminal 70 can supply power to the X-direction coil and the Y-direction coil, and the conductive terminal 70 can achieve anti-shake movement in the X direction and the Y direction through a drive control method.

[0049] Appendix Figure 4Illustrated is an embodiment of a suspension assembly 101 of the present application, wherein the third-direction elastic structure 1013 includes a first focusing spring piece 10131 and a second focusing spring piece 10132. The structure of the first focusing spring piece 10131 is rotationally symmetric with that of the second focusing spring piece 10132. The inner edge of the second frame 102 surrounds a rectangle. The first focusing spring piece 10131 and the second focusing spring piece 10132 are rotationally symmetric about the center of the rectangle surrounded by the inner edge of the second frame 102. The first focusing spring piece 10131 includes an inner clamping portion 10133 and an outer clamping portion 10134. The first focusing spring piece 10131 is clamped to the second frame 102 through the inner clamping portion 10133. The second frame 102 of the present application is made by semiconductor process. Therefore, the second frame 102 uses a material that is easy to etch, engrave or eliminate, and various shapes can be formed from the material. Due to the easy forming property of this material, a complex integrated spring piece structure can be formed.

[0050] The first focusing spring piece 10131 is mounted on the lens support 40 through the inner clamping portion 10133. The second focusing spring piece 10132 is also mounted on the lens support 40 through the inner clamping portion 10133. The first focusing spring piece 10131 and the second focusing spring piece 10132 are symmetrically arranged with each other, so that the lens support 40 can be supported symmetrically, and thus the lens support 40 can be supported relatively balancedly in the direction of the optical axis 401.

[0051] In this embodiment, the spring piece needs to directly support the lens support 40. With the development of the technology of the current camera module, the size of the photosensitive chip is getting larger and larger. Correspondingly, the size of the lens is also getting larger and larger. When the lens becomes larger, the weight of the lens also becomes heavier. Therefore, in this embodiment, the higher the stiffness requirement of the third-direction elastic structure 1013 is. If it is still made of semiconductor material, the elastic force of the third-direction elastic structure 1013 may not meet the requirements. When the third-direction elastic structure 1013 is made of a copper sheet in this embodiment, the stiffness of the third-direction elastic structure 1013 can be improved, and at the same time, it can also have a strong service life.

[0052] In this embodiment, both the inner engaging portion 10133 and the outer engaging portion 10134 of the third-direction elastic structure 1013 are through-hole structures. In this embodiment, the first inner engaging portion 10133 of the third-direction elastic structure 1013 is a through-hole. Correspondingly, convex columns are provided on the second frame 102. Since the second frame 102 is formed by semiconductor processes, convex columns can be relatively simply formed on the second frame 102. In this embodiment, the third-direction elastic structure 1013 is welded to the convex columns provided on the second frame 102 through the first inner engaging portion 10133. In this embodiment, the third-direction elastic structure 1013 is formed by semiconductor materials. Since the second frame 102 can be made of silicon and metal materials, the melting point of silicon is generally around 1400°C, and the melting point of copper is generally around 1100°C. In this embodiment, a laser welding device with a welding temperature > 1500°C in the prior art can be used. In this embodiment, the third-direction elastic structure 1013 and the first inner engaging portion 10133 can be connected by laser welding.

[0053] Those skilled in the art should know that the third-direction elastic structure 1013 can also be a complex structure. For example, a larger number of the third-direction elastic structures 1013 can be used. For example, four focusing elastic pieces can also meet the requirements and may better ensure the accuracy of the direction of the optical axis 401.

[0054] In this application, an elastic component 10 is also proposed, which includes a first frame 103, a second frame 102. The first frame 103 is disposed around the outside of the second frame 102, and a suspension component 101. The suspension component 101 is disposed between the first frame 103 and the second frame 102. The suspension component 101 further includes a first-direction elastic structure 1011 and a second-direction elastic structure 1012. Among them, the first-direction elastic structure 1011 and the second-direction elastic structure 1012 have different elastic recovery directions respectively. The elastic recovery direction of the first-direction elastic structure 1011 is the first direction, and the elastic recovery direction of the second-direction elastic structure 1012 is the second direction. Among them, the first-direction elastic recovery coefficient of the first-direction elastic structure 1011 and the second elastic recovery coefficient of the second-direction elastic structure 1012 differ within 0.8 - 1.2 times. Among them, the first direction and the second direction are intersecting directions. Since the multiple of the difference between the elastic recovery coefficients of the first direction and the second direction of the elastic component 10 in this application is relatively low, that is, the elastic recovery coefficients of the first direction and the second direction of the elastic component 10 are relatively close, it is beneficial for optical image stabilization or the combined restoring force of the overall first direction and the second direction to be easily calibrated. In addition, due to the high forming accuracy, the elastic coefficients between the formed individuals are relatively close, which can also improve the yield rate of assembling the elastic component 10 into a camera module motor.

[0055] In the prior art, the shrapnel in the motor is often made of a thin sheet of metal copper, and its shape is stamped out and thermally riveted to a plastic structural member. A clamping hole needs to be provided on the shrapnel, and a riveting post corresponding to the clamping hole will also be provided on the plastic structural member assembled with the shrapnel. Generally speaking, the prior art includes a group of shrapnel and a frame. When the shrapnel is connected to the plastic structural member through a thermal riveting process using the riveting hole, the thermal riveting equipment performs a heating and pressurizing process on the riveting post on the frame. Since the plastic itself will deform when heated, the melted material after the plastic is heated may also fill in various places between the shrapnel and the frame, thus affecting the flatness of the assembled shrapnel. Therefore, in the prior art, the installation flatness of the four corners of the shrapnel in the motor may be uneven, which may cause the overall tilt of the shrapnel of the motor, thereby affecting the performance of the motor. The static tilt of the motor (referred to as the motor static tilt in the industry) may be too large, resulting in poor imaging performance of the camera module using the motor.

[0056] In this embodiment, both the first-direction elastic structure 1011 and the second-direction elastic structure 1012 are made of silicon and metal materials. In this embodiment, both the first-direction elastic structure 1011 and the second-direction elastic structure 1012 are fabricated by semiconductor processes. This application can adopt the etching technology in semiconductor processes: using chemical substances (such as acids, or etching gases, etc.) to remove metal materials, or using the etching technology in semiconductor processes: a technology that removes part of the material by chemical reaction or physical impact to form a structure. Using semiconductor processes such as etching technology or etching techniques enables the first-direction elastic structure 1011 and the second-direction elastic structure 1012 to be formed on a basis, so that the first-direction elastic structure 1011 and the second-direction elastic structure 1012 can extend integrally from the first frame 103 or the second frame 102. In this application, the first-direction elastic structure 1011 and the second-direction elastic structure 1012 extend integrally with the first frame 103 and the second frame 102, so that the flatness between the first-direction elastic structure 1011 and the second-direction elastic structure 1012 relative to the first frame 103 and the second frame 102 is better, ensuring the overall flatness of the elastic component 10. When the elastic component 10 is installed in the motor, it provides a better static tilt for the motor, ensuring the imaging performance of the camera module equipped with the motor.

[0057] Specifically, in the embodiment of the present application, the first-direction elastic structure 1011 extends integrally within the first frame 103, so that the structural strength of the first-direction elastic structure 1011 and the first frame 103 is relatively high. The first-direction elastic structure 1011 extends integrally outside the second frame 102, and the first frame 103 and the second frame 102 are connected by the first-direction elastic structure 1011. Since the first frame 103, the second frame 102, and the first-direction elastic structure 1011 are formed in this one-piece molding manner, the structural strength between the first-direction elastic structure 1011 and the first frame 103 and the second frame 102 is relatively high, and it is difficult for the first-direction elastic structure 1011 to fall off or break between the first frame 103 and the second frame 102.

[0058] Similarly, the second-direction elastic structure 1012 extends integrally within the first frame 103, so that the structural strength of the second-direction elastic structure 1012 and the first frame 103 is relatively high. The second-direction elastic structure 1012 extends integrally outside the second frame 102, and the first frame 103 and the second frame 102 are connected by the second-direction elastic structure 1012. Since the first frame 103, the second frame 102, and the second-direction elastic structure 1012 are formed in this one-piece molding manner, the structural strength between the second-direction elastic structure 1012 and the first frame 103 and the second frame 102 is relatively high, and it is difficult for the second-direction elastic structure 1012 to fall off or break between the first frame 103 and the second frame 102. Overall, the first-direction elastic structure 1012, the second-direction elastic structure 1012, the first frame 103, and the second frame 102 are all formed by integral extension, so as to ensure that the overall structural strength of the elastic component 10 is relatively high.

[0059] A third-direction elastic structure 1013 is further provided on the second frame 102. The third-direction elastic structure 1013 includes a first focusing elastic piece 10131 and a second focusing elastic piece 10132. The inner edge of the second frame 102 surrounds a rectangle, and the first focusing elastic piece 10131 and the second focusing elastic piece 10132 are rotationally symmetric about the center of the rectangle surrounded by the inner edge of the second frame 102, so that the elastic restoring forces of the first focusing elastic piece 10131 and the second focusing elastic piece 10132 can act relatively uniformly and symmetrically.

[0060] Refer to the appendix Figure 6As shown, the third-directional elastic structure 1013 also includes an inner clamping portion 10133 and an outer clamping portion 10134, wherein the inner clamping portion 10133 is arranged at a position close to the center of the first focusing spring piece 10131 and the second focusing spring piece 10132, and the outer clamping portion 10134 is arranged at a position away from the center of the first focusing spring piece 10131 and the second focusing spring piece 10132, the first focusing spring piece 10131 is fixed to the lens support body 40 through the inner clamping portion 10133, and the second focusing spring piece 10132 is fixed to the second frame 102 through the outer clamping portion 10134.

[0061] In this embodiment, the third directional elastic structure 1013 also includes a first arc segment 10135, a second arc segment 10136, a first corner unit 10138, and a second corner unit 10139, wherein the first corner unit 10138 and the second corner unit 10139 are arranged at adjacent corners. In this embodiment, the first corner unit 10138 and the second corner unit 10139 extend integrally, thereby enhancing the strength of the third directional elastic structure 1013 and preventing the first corner unit 10138 and the second corner unit 10139, which serve as fixed parts, from twisting due to large deformation.

[0062] The first arc segment 10135 is integrally extended from the first corner unit 10138. The first arc segment 10135 is provided with at least 5 arcs. Generally speaking, the more arcs are provided, the smaller the overall rigidity of the first arc segment 10135 is, and the easier it is for the first arc segment 10135 to deform. In this embodiment, the radius of the arc close to the first corner unit 10138 among the at least 5 arcs is the longest. In this embodiment, since the first corner unit 10138 serves as a fixing portion, when the third-direction elastic structure 1013 is deformed, it is not expected that the first corner unit 10138 will deform. Element 10138 falls off or breaks due to excessive deformation. In this embodiment, the radius of the arc close to the first corner unit 10138 is the largest, so that when the third-direction elastic structure 1013 is subjected to force, the strain is first released through the deformation of at least 5 arcs. The radius of the arc close to the first corner unit 10138 is the largest, and the arc close to the first corner unit 10138 is most easily deformed. Therefore, a lot of strain will be released on the arc close to the first corner unit 10138, which greatly reduces the deformation of the first corner unit 10138 when subjected to force.

[0063] In the present embodiment, the second arc segment 10136 is integrally extended from the second corner unit 10139, and at least five arcs are also provided on the second arc segment 10136. Generally speaking, the more arcs are provided, the smaller the overall rigidity of the second arc segment 10136 is, and the easier it is for the second arc segment 10136 to deform. In the present embodiment, the radius of the arc close to the second corner unit 10139 among at least the five arcs is the largest. In the present embodiment, since the second corner unit 10139 serves as a fixed part, when the third-directional elastic structure 1013 is deformed, it is not expected that the second corner unit 10139 will fall off or break due to excessive deformation. In this embodiment, the radius of the arc close to the second corner unit 10139 is the largest, which can enable the strain of the third-directional elastic structure 1013 to be released through the deformation of at least 5 arcs when the force is applied. The radius of the arc close to the second corner unit 10139 is the largest, and the arc close to the second corner unit 10139 is most easily deformed. Therefore, a lot of strain will be released on the arc close to the second corner unit 10139, which greatly reduces the deformation of the second corner unit 10139 when subjected to force.

[0064] In this embodiment, an extension piece 10137 is provided between the first arc segment 10135 and the second arc segment 10136, and the extension piece 10137 integrally connects the first arc segment 10135 and the second arc segment 10136, thereby enhancing the structural strength of the third-direction elastic structure 1013. The first arc segment 10135 and the second arc segment 10136 have mirror-image or rotationally symmetrical shapes, so that when the third-direction elastic structure 1013 is subjected to force, the first arc segment 10135 and the second arc segment 10136 can be uniformly deformed, ensuring that the shape center of the third-direction elastic structure 1013 remains unchanged.

[0065] The extension piece 10137 is provided with an arc edge corresponding to the shape of the lens support body 40 to better support the lens support body 40. In this embodiment, the inner clamping portion 10133 is provided near two sections of the arc edge of the extension piece 10137, so that when the extension piece 10137 is clamped to the lens support body 40, the clamping position interval is as large as possible, so that the structural strength of the clamping piece clamped to the lens support body 40 can be stable.

[0066] Attached Figure 7 A molding method of an elastic component 10 of the present application is illustrated, which includes the following steps:

[0067] S1: Provide a substrate

[0068] In step S1, the provided substrate can be a silicon wafer material. Since the semiconductor forming process based on silicon wafer material is relatively mature, it is more convenient to use silicon material as the substrate.

[0069] S2: Form a metal layer on the substrate

[0070] In step S2, the metal layer can be formed on the substrate by chemical processing and vapor deposition. The metal layer can be used as the basis for etching. Additionally, electroplating can be performed on the vapor-deposited metal layer to thicken the metal layer to meet the processing requirements.

[0071] S3: Etch a pattern on the metal layer

[0072] In step S3, to etch a pattern on the metal layer, on the materials of the metal layer and the substrate obtained in S2, the unwanted pattern can be removed by means of a mask. Additionally, the unwanted pattern can be removed by means of a plasma gas on the materials of the metal layer and the substrate obtained in S2, removing the unwanted material and retaining the pattern on the metal layer. Specifically, a technique that can remove part of the material on the metal layer by chemical reaction or physical impact to form a structure can be used. Using etching technology or semiconductor processes such as etching technology enables the first-direction elastic structure 1011 and the second-direction elastic structure 1012 to be formed on a basis, so that the first-direction elastic structure 1011 and the second-direction elastic structure 1012 can integrally extend from the first frame 103 or the second frame 102. In this application, the first-direction elastic structure 1011 and the second-direction elastic structure 1012 integrally extend with the first frame 103 and the second frame 102, so that the flatness between the first-direction elastic structure 1011 and the second-direction elastic structure 1012 relative to the first frame 103 and the second frame 102 is better, ensuring the overall flatness of the elastic component 10. When the elastic component 10 is installed in the motor, a better static tilt is provided to the motor, ensuring the imaging performance of the camera module equipped with the motor.

[0073] S4: Perform circuit processing on the pattern

[0074] In step S4, since the elastic component 10 in this embodiment needs to meet the requirement of conducting electricity, in the field of compact camera modules (CCMs), it is often necessary to design the circuit of the coil through the elastic piece of the motor, so as to facilitate the conductive design of the motor and reduce the size of the motor. In this embodiment, in order to further reduce the size of the motor, at least two electrical circuit interfaces are provided in the elastic component 10, so as to meet the conduction of at least 2 electrical circuits. This method can save more conductive structures, thereby reducing the size of the motor.

[0075] S5: Remove the substrate to obtain a metal layer

[0076] In step S5, the metal layer with an etched shape is obtained in the previous steps, and this metal layer with a pattern shape can serve as a metal structure with elastic restoring force. Therefore, this metal layer can be used as the elastic piece of the motor. In this embodiment, this metal layer contains a stacked polysilicon layer and at least one metal layer. Since the metal layer is conductive, this shaped "elastic piece" can be fabricated by semiconductor processes, and the shape can be made compact, and the conductive circuit can also be more complex. It is worth mentioning that in this embodiment, the metal layer is preferably a silicon steel sheet, and the silicon steel sheet can be a silicon material and a steel material. Since the silicon steel sheet uses the silicon material as the substrate and the metal material as the conductive and reinforcing material, it can enhance the conductivity and rigidity of the material.

[0077] In this application, the suspension piece is formed by semiconductor processes, specifically by silicon-based materials. By forming with silicon-based materials, metal solder joints can be formed on the surface of the suspension piece, and by using semiconductor processes for forming, the focusing elastic piece can be welded to the metal solder joints, thereby realizing the fixed connection between the focusing elastic piece and the suspension piece.

[0078] In addition, the overall silicon-based material is a mixture of metal and silicon materials, so it can possess certain metal characteristics. The suspension piece can have the strength, stiffness, and resilience of metal. Obviously, by adjusting the proportion of the metal and silicon materials, the elastic coefficient can be adjusted to meet different elasticity requirements.

[0079] In the field of compact camera modules (CCM), it is often necessary to conduct the circuit of the coil through the elastic piece of the motor, so as to conveniently conduct electricity to the motor and reduce the size of the motor. In this embodiment, in order to further reduce the size of the motor, at least two electrical circuit interfaces are provided in the elastic component 10, so as to meet the conduction of at least 2 electrical circuits. This method can save more conductive structures, thereby reducing the size of the motor.

[0080] Refer to the appendix Figure 8Another suspension assembly 101A is shown. In this embodiment, the first-direction elastic structure 1011A and the second-direction elastic structure 1012A included in the suspension assembly 101A are of a compact design. The first-direction elastic structure 1011A and the second-direction elastic structure 1012A form a "V" shaped structure with each other. Among them, the first-direction elastic structure 1011A is a structure of a group of silicon steel sheets. The first-direction elastic structure 1011A is connected to the second-direction elastic structure 1012A through a turning part 1014A. The included angle between the first-direction elastic structure 1011A and the second-direction elastic structure 1012A is 30 - 60°. Those skilled in the art should know that when the first-direction elastic structure 1011A is in the shape of silicon steel laminations, the deformation direction of the first-direction elastic structure 1011A is the stacking direction of the silicon steel sheets. Due to the setting of the first-direction elastic structure 1011A and the second-direction elastic structure 1012A, from an overall perspective, the deformation directions of the first-direction elastic structure 1011A and the second-direction elastic structure 1012A can be superimposed, so that the suspension assembly 101A can have deformation degrees of freedom in multiple directions.

[0081] In this embodiment, the number of the suspension assemblies 101A is four, which are respectively arranged at the four corners of the first frame 103A and the second frame 102A. The first frame 103A and the second frame 102A are elastically supported and connected through the four suspension assemblies 101A.

[0082] In this embodiment, the turning part 1014A is a silicon steel sheet in this embodiment. Among them, the first-direction elastic structure 1011A is a structure of three silicon steel sheets. The three silicon steel sheets of the first-direction elastic structure 1011A are all connected to one silicon steel sheet of the turning part 1014A. This way can reduce the redundant deformation directions caused by the complex shape of the turning part 1014A and ensure the accuracy of the elastic deformation degree-of-freedom direction of the first-direction elastic structure 1011A. The second-direction elastic structure 1012A is also a structure of three silicon steel sheets. The three silicon steel sheets of the second-direction elastic structure 1012A are all connected to one silicon steel sheet of the turning part 1014A. This way can reduce the redundant deformation directions caused by the complex shape of the turning part 1014A. In this embodiment, the accuracy of the deformation degree-of-freedom directions of the first-direction elastic structure 1011A and the second-direction elastic structure 1012A can be ensured. The turning part 1014A can ensure the accuracy of the deformation direction of the suspension assembly 101A with a simple structure and a structure with fewer deformation degrees of freedom.

[0083] In this embodiment, the rigidity of the turning portion 1014A is greater than that of the first-direction elastic structure 1011A and the second-direction elastic structure 1012A, so as to ensure the deformation freedom degrees of the first-direction elastic structure 1011A and the second-direction elastic structure 1012A. Additionally, the deformation freedom degree direction of the turning portion 1014A intersects with the deformation freedom degree direction of the first-direction elastic structure 1011A, and the deformation freedom degree direction of the turning portion 1014A intersects with the deformation freedom degree direction of the second-direction elastic structure 1012A, so that the turning portion 1014A does not affect the deformation freedom degree directions of the first-direction elastic structure 1011A and the second-direction elastic structure 1012A.

[0084] In this embodiment, the first-direction elastic structure 1011A and the second-direction elastic structure 1012A are symmetrically arranged with respect to the midline of the first turning portion 1014A, so that the deformations and elastic restoring forces generated by the first-direction elastic structure 1011A and the second-direction elastic structure 1012A can be relatively evenly arranged, so that the restoring forces of the suspension assembly 101A are relatively symmetric. The midline of the first turning portion 1014A is parallel to the midline of the included angle between two adjacent sides of the first outer frame. Finally, the elastic coefficients along the X direction and the Y direction are the same, so as to ensure that the driving elastic restoring force of the suspension assembly 101A can act relatively evenly, so as to ensure the driving accuracy of the anti-shake driving assembly in this application.

[0085] Attached Figure 9 shows the specific structural schematic diagram of the elastic structure in the attached Figure 8 The first-direction elastic structure 1011A is implemented as a silicon steel lamination structure, where the silicon steel lamination structure is a structure of 3 silicon steel sheets 10111A arranged inside and outside. In this application, the number of silicon steel sheets 10111A can also be changed, so that the elastic coefficient of the first-direction elastic structure 1011A can be greatly changed. In this application, the thickness of the silicon steel sheet can also be changed, and the elastic coefficient of the first-direction elastic structure 1011A can also be changed, so that the elastic coefficient of the first-direction elastic structure 1011A can meet the design requirements.

[0086] It is worth mentioning that the second-direction elastic structure 1012A and the first-direction elastic structure 1011A are connected by a turning portion 1014A. In this application, the turning portion 1014A is not bent by machine heating and pressing. In this application, the turning portion 1014A is still integrally formed with the first-direction elastic structure 1011A and the second-direction elastic structure 1012A. In this application, the turning portion 1014A is processed by an etching technique or a lithography technique to obtain a specific bending angle. In this processing method, for example, the raw material can be cut by ion gas cutting to ensure accuracy. In this embodiment, the turning portion 1014A is a straight edge. In this embodiment, the turning portion 1014A connects the first-direction elastic structure 1011A and the second-direction elastic structure 1012A. The turning portion 1014A is subjected to a trimming process, which can improve the yield of semiconductor processing. The second-direction elastic structure 1012A also includes a second silicon steel sheet 10121A structure.

[0087] In this embodiment, the thickness of the silicon steel sheet of the turning portion 1014A is thicker than the thickness of the silicon steel sheet of the first-direction elastic structure 1011A, so that the rigidity of the turning portion 1014A can be greater than that of the first-direction elastic structure 1011A. During the deformation process of the elastic component 10A, the turning portion 1014A with high rigidity can ensure the freedom of deformation of the first-direction elastic structure 1011A and the second-direction elastic structure 1012A, so that the elastic recovery direction of the elastic component 10A can be maintained in the designed direction, ensuring that the elastic component 10A will not have accidental deformation causing the structure of the elastic component 10A to break due to collision.

[0088] In addition, the first-direction elastic structure 1011A may further include a first thickening portion 10112A located in the middle. The first thickening portion 10112A is located in the middle of the first-direction elastic structure 1011A and can act as a portion with relatively large rigidity to restrict the deformation direction of the first-direction elastic structure 1011A. Correspondingly, the second-direction elastic structure 1012A may further include a second thickening portion 10122A located in the middle. The second thickening portion 10122A is located in the middle of the second-direction elastic structure 1012A and can act as a portion with relatively large rigidity to restrict the deformation direction of the second-direction elastic structure 1012A, so as to ensure at least two degrees of freedom of deformation and adopt a symmetric design to make the elastic coefficients in at least two directions close to improve the accuracy of the elastic coefficient.

[0089] It is worth mentioning that in this application, the anti-shake coil 301 is provided in four numbers and is respectively arranged in the four side directions of the base 50. Since the acting force of the anti-shake coil 301 may pass through the dimension center of the motor, if the suspension assembly 101 can ensure that the "holding force" of the suspension assembly 101 (equivalent to the shrapnel) at the four corners between the first frame 103 and the second frame 102 is the same. For example, in this embodiment, a scheme with an elastic coefficient of 20 mN / mm in the designed X direction and an elastic coefficient of 20 mN / mm in the Y direction and the same elastic coefficient (K value) in the XY direction can be adopted, so that the relative elastic coefficient between the first frame 103 and the second frame 102 can be the same, that is, the elastic action provided by the holding member between the first frame 103 and the second frame 102 can also be more accurate. Correspondingly, the rated driving force of the motor (the rated driving force needs to consider that when at the maximum end of the stroke, the driving force still has to be greater than the maximum elastic holding force between the first frame 103 and the second frame 102) can be made smaller, and finally the overall size of the motor can also be reduced.

[0090] In this application, the elastic coefficients of the first-direction elastic structure 1011 and the second-direction elastic structure 1012 can be adjusted by adjusting the ratio of the silicon material and the metal material. Since the ratio of the silicon and metal materials determines the stiffness of the first-direction elastic structure 1011 and the second-direction elastic structure 1012, adjusting the ratio of silicon and metal in the first-direction elastic structure 1011 and the second-direction elastic structure 1012 can affect the elastic coefficients of the first-direction elastic structure 1011 and the second-direction elastic structure 1012.

[0091] In the prior art, due to the large rigidity at the bending part of the shrapnel, it is very difficult to ensure the consistency of the bending angles of multiple shrapnels. There may be cases where the bending angles of some shrapnels are 89°, 90°, 91°. These differences in bending angles may lead to poor consistency of the shrapnels, thus affecting the driving accuracy of the motor and the product performance of the camera module. On the other hand, if the shrapnel is used as a supporting element in the optical anti-shake direction (generally called anti-shake in the XY direction plane in the industry), if there are cracks at the bending part or different bending angles in multiple anti-shake directions of the shrapnel, it may cause too large differences in the elastic recovery coefficients in each direction of the shrapnel, resulting in poor optical anti-shake effect. For example, if the elastic coefficient in the X direction is larger than that in the Y direction due to the bending angle, it may cause a situation where the driving accuracy is not high when the rated driving force (the acting force of the coil magnet) of the motor drives the motor to move. Through the structure and forming method of the elastic component in this application, the consistency of the elastic component can be improved, thereby improving the consistency of various performances of the motor.

[0092] The foregoing has described the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor, characterized in that, comprising: a base; a lens support body, which is arranged above the base, and the lens support body has an optical axis; an anti-shake drive assembly, a part of the anti-shake drive assembly is arranged on the base, the anti-shake drive assembly further includes an anti-shake frame, and the lens support body is arranged in the anti-shake frame in a manner of elastic support along the direction of the optical axis; an elastic component, the elastic component is arranged between the lens support body and the anti-shake frame, the elastic component is also arranged between the anti-shake frame and the base, at least part of the elastic component expands in thickness along the direction of the optical axis, and at least part of the elastic component extends in structure on a plane perpendicular to the direction of the optical axis.

2. The motor according to claim 1, characterized in that, at least part of the elastic component is made of silicon and a metal material, the anti-shake drive assembly drives the lens support body to move on a plane perpendicular to the optical axis to achieve image anti-shake, and the elastic coefficients of the elastic component in two directions of optical image anti-shake differ by within 2 times.

3. The motor according to claim 2, characterized in that, the elastic component further includes a first frame, a second frame, and a suspension component, the suspension component expands in thickness along the direction of the optical axis, the first frame is arranged around the outside of the second frame, the suspension component is arranged between the first frame and the second frame, the suspension component, the first frame, and the second frame are formed together in an integrally formed manner, the suspension component is formed of silicon and a metal material, and the elastic coefficient of the suspension component can be adjusted by adjusting the relative content of silicon and metal materials in the suspension component.

4. The motor according to claim 3, characterized in that, the suspension component further includes a first-direction elastic structure and a second-direction elastic structure, wherein the first-direction elastic structure and the second-direction elastic structure have different elastic recovery directions respectively, the elastic recovery directions of the first-direction elastic structure and the second-direction elastic structure are perpendicular to the optical axis, the first-direction elastic recovery coefficient of the first-direction elastic structure and the second elastic recovery coefficient of the second-direction elastic structure differ by within 0.8 - 1.2 times, the first-direction elastic structure and the second-direction elastic structure are integrally formed, and both the first-direction elastic structure and the second-direction elastic structure are formed of silicon and a metal material.

5. The motor according to claim 4, characterized in that, The anti-shake driving component further includes an anti-shake coil and an anti-shake magnet. The anti-shake coil is disposed on the base, and the anti-shake magnet is disposed on the anti-shake frame. The anti-shake frame is in a frame shape. The number of both the anti-shake magnet and the anti-shake coil is four. Each of the anti-shake magnets is disposed opposite to each of the anti-shake coils in the direction of the optical axis. The motor further includes a focusing driving component, and the focusing driving component further includes a focusing coil and a focusing magnet. Among them, the focusing coil and the focusing magnet are disposed opposite to each other in the direction perpendicular to the optical axis. The focusing coil is disposed around the lens support, and the focusing magnet is disposed on the anti-shake frame. At least part of the focusing magnet and the anti-shake magnet are the same.

6. The motor according to claim 5, wherein, a part of the focusing driving component is disposed on the lens support. The focusing driving component is used to drive the lens support to move along the direction of the optical axis. The suspension component further includes a third-direction elastic structure. The third-direction elastic structure has an elastic restoring direction along the direction of the optical axis. The upper end surface of the lens support is mounted on the upper side of the anti-shake frame through the third-direction elastic structure, and the lower end surface of the lens support is mounted on the lower side of the anti-shake frame through the third-direction elastic structure.

7. The motor according to claim 6, wherein, the third-direction elastic structure includes a first focusing spring piece, a second focusing spring piece, an inner clamping portion, and an outer clamping portion. The inner edge of the second frame is surrounded into a rectangle. The first focusing spring piece and the second focusing spring piece are rotationally symmetric about the center of the rectangle surrounded by the inner edge of the second frame. The first focusing spring piece and the second focusing spring piece are clamped on the second frame through the outer clamping portion. A part of the circuit of the focusing coil is conducted by the first focusing spring piece, and another part of the circuit of the focusing coil is conducted by the second focusing spring piece. The first focusing spring piece and the second focusing spring piece are clamped on the lens support through the inner clamping portion. The circuit formed by the first focusing spring piece is extended by the second frame, and the circuit formed by the second focusing spring piece is extended by the second frame.

8. The motor according to claim 7, wherein, the suspension component further includes a turning portion disposed between the first-direction elastic structure and the second-direction elastic structure. The rigidity of the turning portion is greater than that of the first-direction elastic structure, and the rigidity of the turning portion is also greater than that of the second-direction elastic structure.

9. The motor according to claim 8, wherein, The first-direction elastic structure is provided with a first-direction constrained deformation section and a first-direction elastic deformation section, the first-direction constrained deformation section and the first-direction elastic deformation section extend integrally, the second-direction elastic structure is provided with a second-direction constrained deformation section and a second-direction elastic deformation section, the second-direction constrained deformation section and the second-direction elastic deformation section extend integrally, the rigidity of the first-direction constrained deformation section is greater than that of the first-direction elastic deformation section, and the rigidity of the second-direction constrained deformation section is greater than that of the second-direction elastic deformation section.

10. The motor according to claim 9, wherein, the thickness of the first-direction constrained deformation section is thicker than that of the first-direction elastic deformation section, and the thickness of the second-direction constrained deformation section is thicker than that of the second-direction elastic deformation section.

11. The motor according to claim 10, wherein, the first-direction elastic structure is composed of three sets of sheet-like structures of the first-direction constrained deformation section and the first-direction elastic deformation section stacked along the optical axis direction, the second-direction elastic structure is composed of three sets of sheet-like structures of the second-direction constrained deformation section and the second-direction elastic deformation section stacked along the optical axis direction, and the elastic coefficient of the suspension assembly can be adjusted by adjusting the distance between every two sets of sheet-like structures.

12. The motor according to claim 11, wherein, the first-direction elastic structure is a structure of three silicon steel sheets, the second-direction elastic structure is also a structure of three silicon steel sheets, and the silicon steel sheet is composed of silicon material and steel material.

13. A forming method of an elastic component, wherein, comprises the following steps: S1: Provide a substrate In step S1, the provided substrate is silicon material; S2: Form a metal layer on the substrate In step S2, based on the silicon material as the substrate, a metal layer is formed by chemical processing and vapor deposition; S3: Etch a pattern on the metal layer In step S3, on the materials of the metal layer and the substrate obtained in S2, the metal layer is patterned through a mask, and through the method of removing unnecessary materials by plasma gas on the materials of the metal layer and the substrate obtained in S2, the unnecessary materials are removed and a pattern is retained on the metal layer; S4: Perform circuit processing on the pattern In step S4, at least two electrical circuit interfaces are set for the pattern; S5: Remove part of the substrate to obtain an elastic component containing silicon and a metal layer In step S5, the obtained elastic component has a metal layer containing a silicon material layer and at least one metal layer stacked elastic component, and the elastic coefficient of the elastic component can be adjusted by adjusting the ratio of the metal and the silicon material.

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