A double-layer base structure of a VCM motor

Abstract

The present application discloses a double-layer base structure of a VCM motor, comprising an upper base and a lower base that are mutually buckled and connected; the upper base and the lower base both comprise an injection-molded base body, a plurality of conductors are arranged in the base body, and the two ends of the conductor A extend to the upper and lower surfaces of the base body A to form contacts and inserts arranged perpendicular to the lower surface of the base body; a hollow adjustment cavity for installing a VCM motor lens is arranged in the middle of the base body, and a plurality of through grooves are arranged around the adjustment cavity A in an axially symmetrical or centrally symmetrical manner. By using a mold to stamp a 3D metal circuit and combining it with an injection molding machine for layered injection molding, the problems of cumbersome process, low efficiency, and even deformation of the connected panel caused by the installation of a flexible circuit board are effectively avoided, the operation efficiency is improved, the labor cost is reduced, and the quality and reliability of the product are improved.

Description

Technical Field

[0001] The present invention relates to the field of VCM motors, and in particular to a base in a VCM motor for fixing the entire VCM motor and providing power to a coil, and specifically to a double-layer base structure of a VCM motor. Background Art

[0002] VCM motor, also known as voice coil motor, is a device that converts electrical energy into mechanical energy and realizes linear and limited swing angle movement. It is a device that uses the interaction between the magnetic field from permanent magnets and the magnetic field generated by the energized coil conductor to produce regular movement. Because the voice coil motor is a non-commutated power device. The main components are relatively simple, coils, springs, magnets, and some fixed structures. Specifically, according to the functional division from top to bottom, it can be divided into a shell, a base that interlocks with the shell to realize the fixed structure of the entire voice coil motor, a lens for videography installed between the shell and the base, a carrier for fixing the lens, an upper spring and a lower spring that connect the carrier to the carrier respectively, and partially connect the lower spring to the base. Finally, by setting a coil on the circumferential side of the lens carrier, by energizing the coil and setting it around the coil, the lens can be moved slightly axially and / or radially in the voice coil motor to achieve focusing and / or anti-shake, so as to improve the imaging quality of the camera.

[0003] Among them, the base plays two roles: First, it is the simplest fixing role, which is the basic role that any structure of the voice coil motor base can achieve. Second, it is to transmit the electrical signal of the control board used to control the action of the voice coil motor to the coil and the Hall sensor installed in the voice coil motor, so that the coil and the Hall sensor can be powered on normally to work, so as to achieve precise focusing and anti-shake of the lens. These are the two basic conditions that the base needs to meet. Due to the very small size of the voice coil motor, it is unrealistic to set up a physical circuit inside. In the prior art, PCB boards are mostly used to achieve this. For multi-circuit circuits, flexible circuits are used to connect to achieve multi-circuit conduction in space. Although flexible circuits can achieve multi-circuit conduction in a voice coil motor in a small space, the processing and installation of flexible circuit boards are very cumbersome and complicated. In the actual installation process, multiple positions are required to cooperate in assembly operations, which is inefficient. For the installation accuracy, it is very high, and it is impossible to achieve both high-precision and high-efficiency manufacturing. Summary of the invention

[0004] In order to solve the problem that the existing VCM motor base needs to use flexible circuit boards to realize the conduction of multiple circuit loops located at different spatial levels in the VCM motor, since the flexible circuit board objectively has the problems of complicated manufacturing and installation process, extremely high installation precision requirements, and low actual installation efficiency, the present application provides a double-layer base structure for the VCM motor. By using a mold to stamp a 3D metal circuit and an injection molding machine for layered injection molding, and then the upper base and the lower base formed by layered injection molding are buckled together, so that the circuit boards of two different levels are physically combined together, but the circuits injected in the upper base and the lower base can be powered on and conducted independently, forming a double-layer base structure with 3D circuits that do not affect each other, effectively avoiding the complicated process, low efficiency, and even deformation of the connected panel affecting subsequent welding caused by the installation of a flexible circuit board, and effectively solving the problem of malfunction during the mechanical impact test or use of the VCM motor. It effectively solves the problem that multi-line conductors cannot be integrally formed during the injection molding process. By using an integrated 3D circuit double-layer base structure, it improves operating efficiency, reduces labor costs, and enables automated product assembly, ensuring product stability and production efficiency, and improving product quality and reliability.

[0005] In order to achieve the above purpose, the technical solution adopted in this application is:

[0006] A double-layer base structure of a VCM motor, including an upper base and a lower base that are buckled together; when the upper base and the lower base are buckled together, the base forms an integrated structure for fixing the VCM motor and becomes a part of the power circuit of the original components including the coil and the Hall sensor. The specific structural design is as follows:

[0007] The upper base includes an injection-molded base body A, in which a plurality of conductors A are arranged, and the two ends of the conductors A extend toward the upper and lower surfaces of the base body A to form contacts A and inserts A arranged perpendicular to the lower surface of the base body A; the middle of the base body A is provided with a hollow adjustment cavity A for installing a VCM motor lens, and a plurality of through grooves arranged around the adjustment cavity A in an axisymmetric or center-symmetrical manner. The base body A is an integrated structure formed in one step by an injection molding process. Before the injection molding, the conductor A according to the pre-design is firstly accurately stamped into a 3D shape by a mold, and then placed in an injection mold for fixing, and finally injection molded into the base body A. The pre-designed 3D conductor A accurately stamped by the mold is fixed in the base body A, and only the two ends of the same conductor A are respectively located on the upper and lower surfaces of the base body A to form contacts A and inserts A for electrical welding or plugging. Similarly, the lower base includes an injection-molded base body B, in which a plurality of conductors B are arranged, and the two ends of the conductors B extend to the upper and lower surfaces of the base body B respectively to form contacts B and plugs B arranged perpendicular to the lower surface of the base body B; the base body B and the corresponding positions of the through grooves are provided with winding posts for installing the OIS anti-shake coil. The base body B and the base body A are implemented by the same method to inject the conductor B, which is precisely stamped into a 3D shape by a mold, into the base body B, and finally only the contacts B and plugs B are retained for electrical connection with the adjacent energized components in the VCM motor. Generally speaking, the plugs A and B located below the base body A and the base body B are used to connect the access end circuit board that controls the VCM motor, the contact A is used to connect the lower spring sheet, and the contact B is used to power the OIS anti-shake coil. It is worth noting that the above-mentioned power supply method and connection method are not the contents that need to be explained and protected in this application, but are only for further convenience of understanding that the conductor A and the conductor B are injected into the base body A and the base body B to form a part of an independent energized circuit, which is used to replace the existing installation of a flexible circuit board to achieve better stability and better installation convenience brought by the power supply method. However, the double-layer base provided in this application can replace the existing flexible circuit board for connecting multiple circuit loops, and can be realized without the need to install any additional conductive mechanism or component. Easy to install and reliable connection. At the same time, the present application is provided with multiple conductors A and conductors B in the base body A located on the upper layer and the base body B located on the lower layer, which can be specifically set according to the number of circuits that need to be turned on, and can flexibly adjust the position of the contact A and / or contact B used for connection according to the actual VCM motor shape structure, which is compatible with VCM motors with different shape structures and has strong practicality. At the same time, since the present application adopts an independent double-layer structure setting, it can meet the circuit connection requirements of different levels in the VCM motor.For example, the OIS anti-shake coil used for anti-shake in the existing VCM motor is set on the base, but the induction electromagnetic coil used to achieve lens focusing is set at the outer circumference of the lens carrier. Generally, suspension wires are installed at the four corners of the spring sheet or the shrapnel as conductors for connection and conduction. Then, the circuits designed in the same plane are used for structures at different levels. For example, the existing PCB board cannot be implemented in the narrow space of the VCM motor, so it has to be connected with the help of a flexible circuit board. The disadvantages of using a flexible circuit board to achieve power supply have been explained in detail in the background technology section, so I will not go into details here. However, two layers are interlocked and each has a built-in conductive material to replace the existing external flexible circuit board without the need for additional installation, so that multi-circuit circuit connection and power supply can be achieved, which significantly simplifies the installation process and improves installation efficiency and reliability.

[0008] As a preferred setting scheme of the present application, further, the multiple conductors A arranged in the base body A constitute an electromagnetic coil circuit connected to adjust the focal length of the lens and a sensor circuit connected to detect the Hall effect generated by the electromagnetic coil. The actual role of the conductor A is the same as that of the conductive wiring in the flexible circuit board in the prior art center. For example, when a circuit loop needs to be conducted, two wirings are used in the flexible circuit board. Similarly, in the present application, only two conductors A need to be injection molded in the base body A. However, the use of the conductor A in the present application can more flexibly set the position of the contact A for connection or welding in the base body A, which can be achieved by presetting the size and shape of the conductor A. Compared with the limitations of the connection points of the existing flexible circuit board, it is more flexible, has lower requirements for assembly connection, and has a more reliable connection effect.

[0009] As a preferred setting scheme of the present application, further, four winding posts are symmetrically arranged on the base body B, and each winding post is provided with an OIS anti-shake coil. Both ends of any OIS anti-shake coil are respectively connected through a terminal A and a terminal B which are electrically connected to independent contacts B arranged on both sides of the winding post, and are connected to the corresponding plug-in piece B through a conductor B arranged in the base body B. The function of the winding post is to provide an environment for the OIS anti-shake coil to be wound, and the terminal A and the terminal B are two conductors B and plug-in pieces B corresponding to each other. After such a setting, any group of OIS anti-shake coils only needs to be connected to the control board provided by the corresponding pulse signal through a group of plug-in pieces B corresponding to the two contacts B connected at both ends of the coil, without the need for cumbersome flexible circuit board connection, and the installation is time-saving, labor-saving, efficient and reliable.

[0010] As a preferred arrangement of the present application, further, at least two lower columns are symmetrically arranged on the lower surface of the base body A, and positioning holes that match and plug with the lower columns are arranged on the base body B. The lower columns and the positioning holes that match and plug with the lower columns are arranged to further improve the assembly efficiency, quickly align, position and assemble, and ensure the accuracy and reliability of assembly.

[0011] As a preferred configuration scheme of the present application, further, the lower surface of the base body A is integrally connected with one or more plug blocks for fixing the plug sheet A, and the lower surface of the base body B is integrally connected with one or more plug blocks for fixing the plug sheet B;

[0012] When there is one insert block provided on the base body A or the base body B, the insert piece A or the insert piece B is fixed at intervals on the same side wall of the insert block;

[0013] When there are multiple inserting blocks arranged on the base body A or the base body B, the inserting pieces A or the inserting pieces B are fixed one by one to the same side wall of the inserting blocks arranged at intervals;

[0014] The base body B is provided with a through hole for avoiding the plug-in block connected to the base body A. Since both the plug-in A and the plug-in B are connected to the peripheral circuit of the VCM motor, that is, the control circuit board, and are powered on, in order to facilitate the connection, it is the simplest to adopt the plug-in plug-in method. The purpose of setting the plug-in block is to increase the strength, ensure the reliability of the plug-in, and avoid the problem of poor contact caused by insufficient strength of the plug-in A and the plug-in B. The plug-in blocks can be arranged in one row or multiple rows, and multiple plug-ins A or plug-ins B that are not connected to each other are arranged on any row. Of course, due to the different structures of VCM motors, a single plug-in block arranged in a row is very likely to be unsuitable or inconvenient for the design of the VCM motor base. Therefore, a single plug-in block can be connected to the plug-in A or plug-in B, which will be more flexible. The specific setting position is preferably close to the lower surface of the base edge. Of course, it can be known to those skilled in the art that it can also be powered on by setting it in other positions that are convenient for connecting the peripheral circuit of the VCM motor, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is an exploded view of the upper and lower bases looking down obliquely;

[0017] Figure 2 This is an exploded view of the upper and lower bases looking diagonally upward;

[0018] Figure 3 This is a structural diagram of the upper base looking diagonally upward;

[0019] Figure 4 This is a structural diagram of the upper base from an oblique top view;

[0020] Figure 5 It is a top view of the upper base;

[0021] Figure 6 is a top view of an upper circuit disposed in an upper base;

[0022] Figure 7 yes Figure 6 The main view;

[0023] Figure 8 It is a three-dimensional structural diagram of the lower base;

[0024] Fig. 9 yes Figure 8 A top view of

[0025] Fig.10 is a top view of a lower circuit disposed in a lower base;

[0026] Fig.11 yes Fig.10 main view.

[0027] In the figure: 1-upper base; 11-through slot; 12-adjustment cavity A; 13-upper column; 14-lower column; 15-base body A;

[0028] 2-upper circuit; 21-contact point A; 22-conductor A; 23-plug A;

[0029] 3-lower base; 31-base body B; 32-adjustment cavity B; 33-winding post; 34-positioning hole; 35-binding post A; 36-binding post B;

[0030] 4-lower circuit; 41-contact point B; 42-conductor B; 43-plug B. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In conjunction with the instruction manual Figure 1-11 The double-layer base structure of the VCM motor shown in the figure includes an upper base 1 and a lower base 3 that are buckled together; when the upper base 1 and the lower base 3 are buckled together, the base formed into an integrated structure is used to fix the VCM motor and become a part of the power circuit of the original components including the coil and the Hall sensor. The specific structural design is as follows:

[0038] The upper base 1 includes an injection-molded base body A15, in which a plurality of conductors A22 are arranged, and the two ends of the conductors A22 extend toward the upper and lower surfaces of the base body A15 to form contacts A21 and inserts A23 arranged perpendicular to the lower surface of the base body A15; a hollow adjustment cavity A12 for installing a VCM motor lens is arranged in the middle of the base body A15, and a plurality of through grooves 11 are arranged around the adjustment cavity A12 in an axially symmetrical or centrally symmetrical manner. The base body A15 is an integrated structure formed in one step by an injection molding process. Before the injection molding, the pre-designed conductor A22 is firstly precisely stamped into a 3D shape by a mold, then placed in the injection mold and fixed, and finally injection molded into the base body A15. The pre-designed 3D conductor A22 that has been precisely stamped by the mold is fixed in the base body A15, and only the two ends of the same conductor A22 are respectively located on the upper and lower surfaces of the base body A15 to form contacts A21 and plugs A23 for electrical welding or plugging. Stamping into a 3D shape means that the conductor A22 is stamped into structures of different levels in the longitudinal plane, such as Figure 8 The longitudinal structural profile of the conductor A22 is shown. Since the conductor A22 is wrapped by the injection-molded base body A15, only the contacts A21 and the insert A23 set at the two ends are exposed on the upper and lower surfaces of the base body A15. Therefore, during the stamping process of the conductor A22, it is necessary to ensure that the distance between the contacts A21 and the insert A23 in the longitudinal plane is equal to the thickness of the base body A15.

[0039] The lower base 3 adopts the same configuration, and includes an injection-molded base body B31, in which a plurality of conductors B42 are arranged. The two ends of the conductors B42 extend toward the upper and lower surfaces of the base body B31 to form contacts B41 and inserts B43 arranged perpendicular to the lower surface of the base body B31. 31 A winding post 33 for installing the OIS anti-shake coil is provided at a position corresponding to the through slot 11. The base body B31 and the base body A15 use the same method to realize the injection molding of the conductor B42, which is precisely stamped into a 3D shape by a mold, into the base body B31, and finally only the contact B41 and the plug B43 are retained for electrical connection with the adjacent energized components in the VCM motor. Generally speaking, the plug A23 and the plug B43 located below the base body A15 and the base body B31 are used to connect the access end circuit board for controlling the VCM motor, the contact A21 is used to connect the lower spring sheet, and the contact B41 is used to power the OIS anti-shake coil. It is worth noting that the above-mentioned power supply method and connection method are not the content that needs to be explained and protected in this application, but only for further convenience of understanding that the conductor A22 and the conductor B42 are injected into the base body A15 and the base body B31 to form a part of an independent energized circuit in this application, which is used to replace the existing installation of flexible circuit boards to achieve better stability and better installation convenience brought by the power supply method. However, the double-layer base provided by the present application can replace the existing flexible circuit board for connecting multiple circuit loops, and it can be realized without the need to install any additional conductive mechanism or components. It is easy to install and the connection is reliable. At the same time, the present application is provided with multiple conductors A22 and conductors B42 in the base body A15 located on the upper layer and the base body B31 located on the lower layer, which can be specifically set according to the number of circuits that need to be turned on, and the position of the contact A21 and / or contact B41 used for connection can be flexibly adjusted according to the actual shape and structure of the VCM motor. It is compatible with VCM motors of different shapes and structures and has strong practicality. At the same time, since the present application adopts an independent double-layer structure, it can meet the circuit connection requirements of different levels in the VCM motor. For example, the OIS anti-shake coil used for anti-shake in the existing VCM motor is set on the base, but the induction electromagnetic coil used to achieve lens focusing is set at the outer circumference of the lens carrier, and is generally connected to the power supply through a spring sheet as a conductor. Then the structures at different levels use the same plane design circuit, such as the existing PCB board. It cannot be realized in the narrow space of the VCM motor, so it has to be connected with the help of a flexible circuit board. The disadvantages of using a flexible circuit board to achieve power supply have been explained in detail in the background technology section, so I will not go into details here. However, two layers of interlocking and respectively built-in conductive materials are used to replace the existing external flexible circuit boards without the need for additional installation, so that multi-circuit circuit connection and power supply are achieved, which significantly simplifies the installation process and improves installation efficiency and reliability.

[0040] The multiple conductors A22 arranged in the base body A15 constitute an electromagnetic coil circuit connected to adjust the focal length of the lens and a sensor circuit connected to detect the Hall effect generated by the electromagnetic coil. The actual role of the conductor A22 is the same as that of the conductive wiring in the flexible circuit board in the prior art. For example, when a circuit loop needs to be conducted, two wirings are used in the flexible circuit board. Similarly, in this application, only two conductors A22 need to be injection molded in the base body A15. However, the use of the conductor A22 in this application can more flexibly set the position of the contact A21 for connection or welding in the base body A15, which can be achieved by presetting the size and shape of the conductor A22. Compared with the limitations of the connection points of the existing flexible circuit board, it is more flexible, has lower requirements for assembly connection, and has a more reliable connection effect. Four winding posts 33 are symmetrically arranged on the base body B31, and each winding post 33 is provided with an OIS anti-shake coil. The two ends of any OIS anti-shake coil are respectively connected through the terminal A35 and the terminal B36 which are electrically connected to the independent contacts B41 arranged on both sides of the winding post 33, and are connected with the corresponding plug-in piece B43 through the conductor B42 arranged in the base body B31. The function of the winding post 33 is to provide an environment for the OIS anti-shake coil to be wound. The terminal A35 and the terminal B36 are two conductors B42 and plug-in pieces B43 corresponding to each other. After such arrangement, any group of OIS anti-shake coils only needs to be connected to the control board provided by the corresponding pulse signal through a group of plug-in pieces B43 corresponding to the two contacts B41 connected at both ends of the coil, without the need for cumbersome flexible circuit board connection, and the installation is time-saving, labor-saving, efficient and reliable.

[0041] As a preferred embodiment of the present application, at least two lower columns 14 are symmetrically arranged on the lower surface of the base body A15, and the base body B31 is provided with positioning holes 34 that match and plug with the lower columns 14. The lower columns 14 and the positioning holes 34 that match and plug with the lower columns 14 are provided to further improve the assembly efficiency, quickly align, position and assemble, and ensure the accuracy and reliability of assembly. The lower surface of the base body A15 is integrally connected with one or more plug blocks for fixing the plug A23, and the lower surface of the base body B31 is integrally connected with one or more plug blocks for fixing the plug B43; when there is one plug block set on the base body A15 or the base body B31, the plug A23 or the plug B43 is fixed at intervals on the same side wall of the plug block; when there are multiple plug blocks set on the base body A15 or the base body B31, the plug A23 or the plug B43 is fixed one by one on the same side wall of the plug blocks set at intervals; the base body B31 is provided with a through hole for avoiding the plug block connected to the base body A15. Since the plug A23 and the plug B43 are both connected to the peripheral circuit of the VCM motor, that is, the control circuit board, for the convenience of connection, it is the simplest to use the plug-in method. The purpose of setting the plug block is to increase the strength, ensure the reliability of the plug-in, and avoid the problem of poor contact due to insufficient strength of the plug A23 and the plug B43. The plug blocks can be arranged in one row or multiple rows, and multiple plugs A23 or plugs B43 that are not connected to each other are arranged in any row. Of course, due to the different structures of VCM motors, a single plug block arranged in a row is very likely not suitable or convenient for the design of the VCM motor base. Therefore, a single plug block can be connected to the plug A23 or the plug B43, which will be more flexible. The specific setting position is preferably close to the lower surface of the base edge. Of course, it can be known to those skilled in the art that it can also be powered on by setting it in other positions that are convenient for connecting the peripheral circuit of the VCM motor, which will not be repeated here.

[0042] Furthermore, in order to facilitate the fixed installation of the lower spring sheet, an upper column 13 is also integrally formed on the upper surface of the upper base 1. The technical effect of setting the upper column 13 is in two aspects. One is to facilitate the positioning and installation of the lower spring sheet, and the other is to facilitate the fixation after precise positioning.

[0043] Preferred embodiment:

[0044] In this embodiment, the double-layer base structure described above is used to power the OIS anti-shake coils with four symmetrically arranged on the base, and four pairs of independent circuit loops need to be connected; at the same time, it is also necessary to power the focus coils arranged on the outer circumference of the lens carrier, and the focus coil circuit will have one pair of independently connected circuits; and two pairs of independently connected Hall sensor circuit loops. Then the double-layer base structure of this embodiment is specifically implemented as follows: 4 pairs of 8 independent conductors B42 for connecting each OIS anti-shake coil are stamped and set on the lower base 3 according to the preset setting method, forming a lower circuit 4 built into the base body B31. At this time, the 8 conductors B42 set in the base body B31 can be understood as 8 independent wires; at the same time, the same injection molding method is used to inject 6 independent conductors A22 into the base body A15 to form an upper circuit 2 for connecting the focus coil and the two pairs of Hall sensor circuit loops respectively, and the base body A15 and the upper circuit 2 constitute the upper base 1. Similarly, the six conductors A22 can be understood as six wires fixed in the base body A15, two of which are used to conduct the focus coil, and the other two are used to conduct the two Hall sensors. The positions of the two ends of each conductor A22 and conductor B42 are determined by the specific VCM motor structure. The setting method of this embodiment can set the position of the contact A21 and / or contact B41 as needed, without technical limitations, good compatibility, and strong practicality.

[0045] The upper base 1 and the lower base 3 are then buckled together to form a complete double-layer base structure, realizing multi-level and multi-circuit power supply, and at the same time, there is no need to use the flexible circuit board or circuit belt in the prior art to realize the overlapping connection of the circuit, so that the design and installation of the entire VCM motor are more simplified, and the assembly accuracy and efficiency can be significantly improved. The cumbersome process caused by the connection of the flexible circuit board in the prior art will no longer exist, and the technology disclosed in this embodiment is a significant improvement over the prior art.

[0046] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double-layer base structure of a VCM motor, characterized in that: It comprises an upper base (1) and a lower base (3) which are buckled and connected to each other. The upper base (1) comprises an injection-molded base body A (15), wherein a plurality of conductors A (22) are arranged in the base body A (15), and the two ends of the conductors A (22) respectively extend toward the upper and lower surfaces of the base body A (15) to form contacts A (21) and inserts A (23) arranged perpendicular to the lower surface of the base body A (15); a hollow adjustment cavity A (12) for mounting a VCM motor lens is arranged in the middle of the base body A (15), and a plurality of through grooves (11) are arranged around the adjustment cavity A (12) in an axially symmetrical or centrally symmetrical manner; The lower base (3) comprises an injection-molded base body B (31), wherein a plurality of conductors B (42) are arranged in the base body B (31), and the two ends of the conductors B (42) respectively extend toward the upper and lower surfaces of the base body B (31) to form a contact point B (41) and an insert piece B (43) arranged perpendicular to the lower surface of the base body B (31); a winding post (33) for mounting an OIS anti-shake coil is arranged at a position corresponding to the base body B (31) and the through slot (11); the plurality of conductors A (22) arranged in the base body A (15) constitute an electromagnetic coil circuit connected to adjust the focal length of the lens and a sensor circuit connected to detect the Hall effect generated by the electromagnetic coil; Four winding posts (33) are symmetrically arranged on the base body B (31), and each winding post (33) is provided with an OIS anti-shake coil. The two end terminals of any OIS anti-shake coil are respectively connected through a terminal A (35) and a terminal B (36) which are arranged on both sides of the winding post (33) and are electrically connected to an independent contact B (41), and are connected with a corresponding plug-in piece B (43) through a conductor B (42) arranged in the base body B (31); at least two lower posts (14) are symmetrically arranged on the lower surface of the base body A (15), and a positioning hole (34) which is matched and plugged with the lower posts (14) is arranged on the base body B (31).

2. The double-layer base structure of a VCM motor according to claim 1, characterized in that: The lower surface of the base body A (15) is integrally connected with one or more plug blocks for fixing the plug piece A (23), and the lower surface of the base body B (31) is integrally connected with one or more plug blocks for fixing the plug piece B (43); When there is only one insert block provided on the base body A (15) or the base body B (31), the insert piece A (23) or the insert piece B (43) is fixed at intervals on the same side wall of the insert block; When a plurality of insert blocks are arranged on the base body A (15) or the base body B (31), the insert pieces A (23) or the insert pieces B (43) are fixed one by one to the same side wall of the insert blocks arranged at intervals; The base body B (31) is provided with a through hole for accommodating an insert block connected to the base body A (15).

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