WO2024104451A1 - 一种光学镜头驱动马达 - Google Patents

一种光学镜头驱动马达 Download PDF

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Publication number
WO2024104451A1
WO2024104451A1 PCT/CN2023/132203 CN2023132203W WO2024104451A1 WO 2024104451 A1 WO2024104451 A1 WO 2024104451A1 CN 2023132203 W CN2023132203 W CN 2023132203W WO 2024104451 A1 WO2024104451 A1 WO 2024104451A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball
base
lens
driving
buffer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/132203
Other languages
English (en)
French (fr)
Inventor
白华
刘佳
卢鹏
袁栋立
黄桢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Sunny Opotech Co Ltd
Original Assignee
Ningbo Sunny Opotech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Sunny Opotech Co Ltd filed Critical Ningbo Sunny Opotech Co Ltd
Priority to CN202380079645.6A priority Critical patent/CN120202614A/zh
Publication of WO2024104451A1 publication Critical patent/WO2024104451A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors

Definitions

  • the present invention relates to the technical field of camera module lens driving devices, and in particular to a ball motor driving assembly.
  • a corresponding driving device can be configured in the camera module structure to drive the optical lens to move along the direction of the optical axis to obtain a clearer image.
  • the driving device generally selected in the prior art is a motor structure, such as a ball motor, an SMA motor or a piezoelectric motor structure.
  • it is necessary to make corresponding improvements to the optical lens For example, increasing the number of lenses of the optical lens, replacing the plastic lens in the optical lens with a glass lens, etc. will effectively improve the imaging quality of the optical lens, but at the same time, measures to improve the imaging quality of the optical lens will also further increase the weight of the optical lens, and the increase in the weight of the optical lens will require the driving device to provide a greater driving force.
  • the camera module configured in the mobile terminal needs to achieve miniaturization of the overall structure, and the various components that make up the camera module also need to achieve corresponding structural optimization.
  • the improvement of the imaging quality of optical lenses has become an irreversible trend, and how to increase the driving force to drive the movement of the optical lens is a problem that needs to be solved at present.
  • the driving force of the driving device will be increased by increasing the number of turns of the coil or increasing the volume of the magnet, but as the driving force increases, the size of the driving device will also increase, which does not conform to the development trend of miniaturization of camera modules.
  • the present invention provides a ball motor and a driving assembly thereof, which can effectively solve some or most of the above-mentioned problems.
  • the present invention provides a ball motor and its lens assembly, by dividing the optical lens into multiple lens groups, which are the first lens group, the second lens group and the third lens group in sequence along the direction of the optical axis, and configuring the ball motor on the second lens group can effectively drive the second lens group to move along the direction of the optical axis to obtain clear imaging.
  • the first lens group and the third lens group always remain in a fixed state, and the second lens group moves along the direction of the optical axis in the space formed by the first lens group and the third lens group, and the ball motor only needs to drive the second lens group to move, which can effectively reduce the requirements for driving force.
  • the driving motor uses structures such as magnets and coils as its driving force
  • the second lens group is accommodated on the carrier of the driving motor.
  • a ball holder structure is set on one of the side surfaces of the driving motor.
  • the ball holder is at least two parts, and a ball receiving groove is formed in the middle.
  • the diameter of the ball receiving groove is larger than the diameter of the ball.
  • the ball is restricted inside the ball receiving groove and can be ensured to roll freely relative to the ball receiving groove.
  • One side of the ball contacts the track groove reserved on the lens carrier, so that the ball can assist the movement of the second lens group, which can effectively reduce the resistance of the second lens group when it moves along the optical axis.
  • the magnet coil is set on one side of the lens carrier, and the side of the lens carrier is extended downward to form a magnet installation position, which can further improve the integration of components and ensure the miniaturization of the module structure.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, which realizes the miniaturization of the driving motor structure while driving the optical lens to move along the optical axis by setting a corresponding driving structure on one side of the optical lens.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein the optical lens is arranged along the optical axis as a first lens group, a second lens group and a third lens group, and a driving motor is used to drive the second lens group to move to obtain a clear image.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein a magnet mounting portion is extended downwardly on one side of a lens carrier, and the second lens group and the magnet mounting portion are arranged on the same element, thereby miniaturizing the drive motor.
  • One embodiment of the present application provides a ball motor and a lens assembly thereof, wherein a track groove is reserved on a magnet mounting portion extending downward from one side of a lens carrier, and the ball can move along the reserved track groove, while ensuring the alignment of the lens movement. At the same time, it can effectively reduce the requirements for driving force.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein a base driving unit is provided on a base corresponding to a magnet mounting position, and a coil is provided on the base driving unit opposite to the mounting position of the magnet so that the magnet and the coil can interact with each other.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein the base of the driving motor includes a base driving part and a base bearing part, wherein the base driving part and the base bearing part are arranged on the same plane to ensure the compactness of the overall structure.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein a base driving portion and a base bearing portion are arranged adjacent to each other, wherein the base bearing portion is used to install a third lens group, and a lens snap groove is provided in the light-through hole of the base bearing portion, and the third lens group can be fixed on the base bearing portion through the snap groove, thereby increasing the stability of the connection between the third lens group and the base bearing portion.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein the base driving portion is further provided with an auxiliary component, the auxiliary component comprising a retaining frame and at least one ball, the retaining frame being fixed on the base driving portion to confine the ball therein, wherein one side surface of the ball contacts the track groove on the side surface of the lens carrier to assist the movement of the second lens group.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein the ball holder is composed of at least two parts, wherein the interior of the holder has a ball receiving groove, and the diameter of the ball receiving groove is larger than the diameter of the ball, so that the ball can roll freely in the ball receiving groove to assist the movement of the second lens group.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein the driving motor is provided with buffer pads, which are arranged at the four corners of the lens carrier to prevent the second lens group from excessively moving and thereby damaging the components inside the driving motor.
  • One of the embodiments of the present application provides a ball motor and a lens assembly thereof, wherein a buffer pad on the driving motor can be disposed below the magnet mounting position to prevent the magnet mounting position from colliding with the upper surface of the base, thereby providing protection for the base.
  • a driving motor comprises a movable part, a fixed part, a driving part and an auxiliary part, wherein the movable part can move relative to the fixed part under the action of the driving part;
  • the movable part is arranged above the fixed part, the auxiliary part is arranged on a side of the fixed part adjacent to the movable part, and the auxiliary part is used to reduce the resistance of the movable part when it moves relative to the fixed part, characterized in that
  • the auxiliary part includes a ball and a retaining frame, and the retaining frame is composed of at least two parts of the structure.
  • the two parts of the structure are combined to form at least one ball installation cavity.
  • the retaining frame has at least one ball aperture, and the minimum diameter of the ball aperture is smaller than the diameter of the ball.
  • the ball is confined in the ball installation cavity so that the ball can roll freely in the ball installation cavity.
  • the ball at least partially protrudes from the ball aperture and contacts the movable part.
  • FIG1 is a schematic diagram of the overall structure of a driving motor in the present invention.
  • FIG2 is a schematic cross-sectional view of the driving motor of the present invention.
  • FIG3 is a schematic diagram of the exploded structure of the components of the drive motor in the present invention.
  • FIG4 is a schematic structural diagram of the active part of the driving motor in the present invention.
  • FIG5 is a schematic structural diagram of an angle of the base in the present invention.
  • FIG6 is a schematic structural diagram of the base from another angle in the present invention.
  • FIG7 is an exploded schematic diagram of the ball retainer and the base in the present invention.
  • FIG8 is an exploded schematic diagram of a plurality of ball retainers and the base in the present invention.
  • FIG9 is a schematic diagram of the exploded structure of the retainer of the present invention.
  • FIG10 is a cross-sectional schematic diagram of the drive motor and the optical lens after installation in the present invention.
  • FIG11 is a schematic diagram of the overall structure of the drive motor and the optical lens after installation in the present invention.
  • FIG. 12 is a schematic diagram of the structure of the optical lens driving assembly in the present invention.
  • 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, a contact connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two elements.
  • the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • the present invention provides a driving motor 20, comprising a movable part 21, a fixed part 22, a driving part 23, an auxiliary part 24 and a sensing part 25, wherein the movable part 21 can move relative to the fixed part 22 under the action of the driving part 23.
  • the auxiliary part 24 is arranged between the movable part 21 and the fixed part 22, and the auxiliary part 24 is mainly used to reduce the friction force when the movable part 21 moves relative to the fixed part 22, so as to reduce the requirement for the driving force when the movable part 21 moves.
  • the auxiliary part 24 also has a buffering effect to prevent the excessive movement of the movable part 21, thereby improving the accuracy of the adjustment of the driving motor 20.
  • the sensing part 25 is arranged on the bottom surface of the movable part 25 to sense the position of the movable part 21 in real time, and the position information of the movable part 21 is fed back to the driving motor 20 to improve the accuracy of the adjustment of the driving motor 20.
  • the driving part 23 in the present invention includes a magnet 231, a coil 232, and a circuit board 233 for conducting the coil 232.
  • the magnet 231 is arranged on the movable part 21 and can move with the movement of the movable part 21.
  • the coil 232 is arranged on the fixed part 22. During the operation of the driving part 23, the coil 232 is always in a fixed state.
  • the driving part 23 also includes a circuit board 233, which includes a soft board body 234, a supporting substrate 235, and a welding pin 236.
  • the soft board body 234 has a coil mounting position and a sensor mounting position.
  • the coil mounting position is mainly used to fix and conduct the coil 232 to provide the current required by the coil 232 during operation.
  • the sensor mounting position is used to provide the mounting position of the sensing element to sense the real-time position information of the movable part 21 in real time.
  • the soft board body 234 and the supporting substrate 235 can be implemented as the same structure, and part of the circuit of the driving motor 20 is arranged inside the supporting base 235.
  • One end of the welding pin 236 is connected to the supporting substrate 235, and the other end is connected to an external power supply device to provide the current required for the driving motor 20 to work.
  • the movable part of the driving motor 20 is implemented as a lens carrier 211.
  • the lens carrier 211 is mainly used to carry a movable lens group, that is, to fix the optical lens group to be moved to the lens carrier 211.
  • the lens carrier 211 moves under the action of the driving force, it can drive the optical lens group fixed to the lens carrier 211 to move, thereby realizing the adjustment of the position of part of the optical lens group.
  • part of the optical lens group constituting the optical system moves, part of the optical parameters of the entire optical system can be changed, so that a clearer image can be obtained according to the actual situation of the photographed object.
  • the lens carrier 211 drives part of the optical lens group to move along the direction of the optical axis, so that a clearer image can be obtained.
  • the lens carrier 211 serves as a movable part in the driving motor 20, and a corresponding driving member is arranged on it. Under the action of the driving member, the lens carrier 211 drives part of the lens group to move relative to the fixed part 22 to realize the adjustment of the position of the part of the lens group, thereby obtaining a clearer image. For clear imaging.
  • the lens carrier 211 includes a first structural member 212 and a second structural member 213.
  • the first structural member 212 is mainly used to carry the movable lens group, and the second structural member is mainly used to install part of the driving member.
  • the second structural member 213 is formed by extending downward from a side surface of the first structural member 212. During the manufacturing process, the second structural member 213 and the first structural member 212 can be integrally formed to simplify the manufacturing process of the lens carrier 211.
  • the first structural member 212 has a second light hole 2121, a lens bearing end surface 2122, a buffer hole 2123 and a protective clamping position 2124.
  • the second light hole 2121 is located on the upper surface of the first structural member 212, and its interior is mainly used to accommodate a movable lens group so that the movable lens group is fixed to the lens carrier 211, and the optical axis of the movable lens group is consistent with the center of the second light hole 2121 on the first structural member 212, so that as much light as possible can pass through the second light hole 2121, thereby ensuring the imaging quality of the camera module.
  • the lens bearing end surface 2122 is disposed on the upper surface of the first structural member 212, and the lens bearing end surface 2122 is disposed around the second light-through hole 2121, and is mainly used to fix the movable lens group, so that the movable lens group is fixed on the first structural member 212.
  • a plurality of buffer holes 2123 and protective clamping positions 2124 are also disposed on the first structural member 212, and the buffer hole 2123 is disposed on the upper surface of the first structural member 212.
  • the buffer hole 2123 is a cylindrical groove formed by being recessed downward from the surface of the first structural member 212.
  • the number of the buffer holes 2123 can be four, which are evenly disposed on the upper surface of the first structural member 212, and are specifically disposed around the second light-through hole 2121.
  • the interior of the buffer hole 2123 may be a buffer structure made of a flexible material, and the buffer structure will be described in detail in conjunction with the auxiliary component 24, so the corresponding description is omitted here.
  • the movable part 21 is implemented as a lens carrier 211.
  • the lens carrier 211 can move along the direction of the optical axis under the action of a driving member.
  • the specific direction of the optical axis is shown in the figure.
  • the lens carrier 211 can move up and down along the direction of the optical axis.
  • a corresponding protective structure and the auxiliary member 24 described in the present invention are provided on the lens carrier 211.
  • the auxiliary member 24 has a corresponding buffer structure to protect the lens carrier 211.
  • the buffer structure includes the buffer hole 2123 and the protective clamping position 2124 provided on the first structural member 212.
  • the buffer hole 2123 is provided on the first structural member 212 and can be used to prevent the lens carrier 211 from excessively moving along the direction of the optical axis.
  • the protective clamping position 2124 is provided on other side edges of the first structural member 212, except for the side edges extending from the second structural member 213. At least one protective stop 2124 may be provided on the other sides. In a specific embodiment, there are three protective stop 2124, which are respectively provided on the sides of the first structural member 212, wherein the protective stop 2124 is formed by extending downward from the side of the first structural member 212.
  • the length of the protective stop 212 is less than the length of the side of the first structural member 213, and it is mainly used to prevent the lens carrier 211 from excessively moving along the direction of the optical axis.
  • the protective stop 2124 extending from the side of the first structural member 213 has a height along the optical axis that is less than the movable stroke of the lens carrier 211, thereby forming a protective effect on the lens carrier
  • the second structural member 213 is formed by extending downward from a side surface of the first structural member 212, and the second structural member 213 has a magnet mounting portion 2131, an injection molding mounting portion 2132 and a track groove 2133, and the magnet mounting portion 2131 is mainly used to fix part of the driving member in the driving portion 23.
  • the magnet mounting portion 2131 and the track groove 2133 are located on the side surface of the second structural member 213, and the track groove 2133 is mainly used to limit the path of the ball movement so that the ball can move along the direction of the optical axis.
  • the injection molding mounting portion 2132 can be integrally formed with the second structural member 213, or can be directly fixed with the second structural member 213 after imaging, and the injection molding mounting portion 2132 is mainly used to increase the strength of the second structural member 213.
  • the lens carrier 211 can be made of metal material, and the ball groove 2133 is directly formed on the metal material, which is difficult to form and the precision is also difficult to control. Therefore, the solution provided in the present invention is adopted to directly form a square through hole on the second structural member 213, and fix the injection molding mounting portion 2132 on the inner side of the square through hole to form the track groove 2133. This can not only effectively solve the problem that metal materials are difficult to form, but also ensure the accuracy of the formed track groove 213.
  • the fixed part 22 is in a fixed state relative to the movable part 21 in the present invention.
  • the fixed part 22 includes a shell 221 and a base 222.
  • the shell 221 is arranged on the outer surface of the drive motor 20, and other components of the drive motor 20 can be covered inside it to protect other components.
  • the shell 221 has a first light hole 2211 and a shell shell 2212.
  • the first light hole 2211 is mainly used for external light to enter the interior of the camera module for imaging.
  • the shell shell 2212 is arranged around the first light hole 2211.
  • the interior of the shell shell 2212 can form a accommodating space, and the components of the drive motor 20 can be accommodated inside it.
  • the shell shell 2212 can be made of metal material to increase the strength of the shell 221 so as to better protect the components inside the drive motor 20. At the same time, due to the magnetic conductivity of the metal material, the shell 221 can be stably adsorbed under the action of the drive part 23.
  • the fixing portion 22 of the present invention further includes a base 222.
  • the base 222 includes a base driving part 223 and a base bearing part 224.
  • the base driving part 223 is mainly used to set a part of the driving parts of the driving motor 20, and the base bearing part 224 provides a position for installing the optical lens.
  • the base driving part 223 and the base bearing part 224 are arranged on the same plane, and the base driving part 223 and the base bearing part 224 are arranged adjacent to each other.
  • the base driving part 223 can be integrally formed with the base bearing part 224 using a mold structure, which can simplify the molding process of the base 222 and further improve the molding accuracy of the base 222.
  • the base driving part 223 corresponds to the position of the second structural part 213 on the lens carrier 211, that is, the base driving part 223 and the second structural part 213 on the lens carrier 211 are arranged on the same side of the driving motor 20.
  • the second structural member 213 on the lens carrier 211 is provided with the magnet mounting portion 2131, and a part of the driving members on the corresponding driving member 23 is fixed on the magnet mounting portion 2131, and the base driving member 223 on the base 222 corresponding to the second structural member 213 on the lens carrier 211 is provided with another part of the driving members on the driving member 23.
  • the driving member provided on the lens carrier 211 interacts with the driving member on the base driving member 223, so that the lens carrier 211 moves relative to the base 222.
  • a movable lens group is fixed on the lens carrier 211, and when the lens carrier 211 moves relative to the base 222, the movable lens group can be driven to move, so that the part of the lens group of the optical lens moves along the optical axis direction to obtain clear imaging.
  • the base driving part 223 also has a holder mounting position 2234, and the holder mounting position 2234 is arranged at both ends of the base bracket 2232, and is arranged adjacent to the base bracket 2232.
  • the holder mounting position 2234 is arranged on the side of the base bracket 2232.
  • the holder mounting position 2234 and the base supporting part 2231 can be integrally formed, that is, the shape of the holder mounting position 2234 is directly formed by a prefabricated mold, and the holder mounting position 2233 can be directly formed by an injection molding process.
  • the holder mounting position 2234 has a groove, and the groove can be used to accommodate structures such as balls, so as to form an accommodation effect for structures such as balls.
  • the specific structure of the holder mounting position 2234 will be described in detail in conjunction with the auxiliary part 24 later, and no corresponding redundant description is made here.
  • the base driving part 223 has a bottom bearing seat 2231, a base bracket 2232, a circuit board mounting position 2233, a retainer mounting position 2234 and a bracket through hole 2235, wherein other components are arranged on the base bearing part 2231.
  • the base bearing part 2231 extends upward along the direction of the optical axis to form a base bracket 2232, and the base bracket 2232 has a bracket through hole 2235 penetrating the middle of the base bearing part 2231.
  • a circuit board mounting position 2233 is formed between the base bracket 2232, one side of the circuit board mounting position 2233 is located on the bottom supporting position 2231, and the other side is located on the base bracket 2232.
  • the circuit board mounting position 2233 is located in the bracket through hole 2235, and the coil 232 is fixed on the circuit board mounting position 2233.
  • the coil 232 is accommodated in the bracket through hole 2235, so as to make full use of the space of the base bracket 2232 and realize the compact arrangement of components.
  • the coil 232 is conducted through the supporting substrate 235 arranged on the circuit board mounting position 2233, wherein the circuit board mounting position 2233 on the base driving part 223 is mainly used to install the circuit board 233 in the driving part 23, and the circuit board 233 has a coil mounting position.
  • the coil 232 structure is accommodated inside the bracket through hole 2235 on the base driving part 223 to make full use of the space on the base driving part 223, thereby realizing a compact setting of the overall structure.
  • the base also has a base bearing part 224, which has a third light hole 2241, a bearing bottom surface 2242, a molded seat 2243, a buffer groove 2244, a limit slot 2245, a coil avoidance position 2246 and a lens buckle slot 2247, wherein the bearing bottom surface 2242 and the bottom bearing position in the base driving part 223 are on the same plane, and the base bearing position 2231 and the bearing bottom surface 2242 can be integrally formed.
  • the third light hole 2241 is located in the middle position of the bearing bottom surface 2242 to allow external light to reach the photosensitive chip of the camera module through the third light hole 2241.
  • the mold seat 2243 is formed by extending upward from the bearing bottom surface 2242 along the direction of the optical axis.
  • the mold seat 2243 itself has a certain height, and a lens mounting position is formed inside the mold seat, wherein the lens mounting position can be the same structure as the third light through hole 2241.
  • a plurality of buffer grooves 2244 are formed on the upper surface of the mold seat 2243, and the buffer grooves 2244 correspond to the positions of the buffer holes 2123 on the lens carrier 211, that is, the lens carrier 211 is arranged on the upper surface of the base 222, and the buffer holes 2123 on the lens carrier 211 correspond to the positions of the buffer grooves 2244 on the base 222, so as to reserve the movable space of the lens carrier 211.
  • the limiting card slot 2245 on the base bearing part 224 is arranged on the side of the molded seat 2243, and the first mechanism 212 on the lens carrier 211 has the protective card position 2124, and the protective card position 2124 is formed to extend downward from the side of the lens carrier 211.
  • the limiting card slot 2245 is formed on the side of the molded seat 2243 on the base bearing part 224 at a position where the protective card position 2124 extends downward, and the protective card position 2124 extends into the limiting card slot 2245, wherein the height of the limiting card slot 2245 is greater than the height of the protective card position 2124, while ensuring the normal movement of the lens carrier 211, the lens carrier 211 can also be effectively protected.
  • a protective card position 2124 is formed on the base bearing part 224.
  • a coil avoidance position 2246 is formed, and the orthographic projection position of the coil avoidance position 2246 is consistent with the installation position of the coil 232.
  • the lens buckle groove 2247 is formed on the bearing bottom surface 2242 of the base bearing portion 224, and the lens buckle groove 2247 is located on the inner side of the third light hole 2241, so as to be fixed to the optical lens through the lens buckle groove 2247.
  • the optical lens can be fixed to the motor carrier by means of glue bonding, etc., and the present solution fixes the optical lens to the motor carrier through a buckle structure, which can effectively solve the problem that the change in the thermal performance of the glue affects the driving accuracy of the driving motor.
  • the present invention further provides an auxiliary member 24, which includes a holder 241, a ball 242 and a buffer portion 243.
  • the auxiliary member 24 is mainly used to reduce the resistance of the lens carrier 211 when it moves so as to reduce the requirement of the driving force of the driving motor 20.
  • the auxiliary member 24 also provides a buffer portion 243 to prevent the lens carrier 211 from excessively moving and damaging some components of the driving motor 20.
  • the auxiliary member 24 includes a holder structure and a buffer structure, the holder structure includes the holder 241 and the ball 242, the holder 241 is used to accommodate the ball 242, wherein the holder 241 is composed of at least two symmetrical parts.
  • the retainer 241 includes a symmetrically arranged first retainer 2411 and a second retainer 2412, and the first retainer 2411 and the second retainer 2412 are combined to form a ball installation cavity, and the ball 242 is confined inside the ball installation cavity to provide an installation position for the ball 242.
  • the first retainer 2411 and the second retainer 2412 have at least one ball aperture, the minimum diameter of the ball aperture is r, and the diameter of the ball 242 is R, wherein the minimum diameter r of the ball aperture is smaller than the diameter R of the ball 242, so as to confine the ball 242 within its ball aperture.
  • the ball 242 is restricted on the holder 241 by the ball aperture, and the ball 242 can roll freely in the ball installation cavity formed by the holder 241, wherein the ball 242 restricted inside the holder 241 has a part of its structure protruding from the ball installation cavity and in contact with the track groove 2133 reserved on the lens carrier 211, that is, one side of the ball 242 is restricted in the track groove 2133, so that the ball 242 can move along the direction restricted by the track groove 2133.
  • the preset direction of the track groove 2133 in the present invention is consistent with the direction of the optical axis, so with the assistance of the ball 242, the lens carrier 211 can move along the direction of the optical axis.
  • the retaining frame 241 is arranged on the retaining frame mounting position 2234 preset on the base driving part 223, and the interior of the retaining frame mounting position 2234 has a recessed structure, and part of the ball 242 is accommodated inside the recessed structure.
  • the retaining frame 241 is fixed on the retaining frame mounting position 2234, and the accommodating space formed by the retaining frame mounting position 2234 and the retaining frame 241 accommodates the ball 242 therein, so that the ball 242 can roll in the internal space formed thereby.
  • one side of the ball 242 contacts the track groove 2133 on the lens carrier 211, so that the track groove 2133 can move along the direction of the optical axis with the assistance of the ball 242, and the ball 242 is restricted in the space formed by the holder 241 and the holder mounting position 2233, so that the ball 242 can roll freely in the space, which can effectively restrict the position of the ball 242 and prevent the ball 242 from rolling down to affect the mechanical properties of the drive motor 20.
  • the structure of the holder 241 with multiple parts can restrict the ball 242 inside the holder 241, and then the combined structure formed by the ball 242 and the holder 241 is installed on the holder mounting position 2234. While simplifying the assembly process of the ball 242, due to the limiting effect of the holder 241 on the ball 242, the assembly accuracy of the drive motor 20 can be further improved, and the assembly efficiency of the drive motor 20 can be further improved.
  • the holder 241 includes a first holder 2411 and a second holder 2412, and the first holder 2411 and the second holder 2412 have multiple through holes.
  • the number of the ball 242 on one side is two, and the corresponding first holder 2411 and the second holder 2412 respectively have two through holes, and the through holes on the first holder 2411 and the second holder 2412 are arranged at the same position.
  • the ball 242 can be restricted to the position of the through hole inside them.
  • Part of the structure of the ball 242 extends from both sides of the through hole, and the extended side of the ball 242 contacts the track groove 2133 on the lens carrier 211 to assist the movement of the lens carrier 211.
  • the structure of the combination of the retainer 241 and the ball is mounted on the retainer mounting position 2234.
  • the height of the structure of the combination of the retainer 241 and the ball 242 in the optical axis direction is greater than the height of the single ball structure in the optical axis direction.
  • the retainer mounting position 2234 is set as a receiving groove.
  • the structure formed by the first retainer 2411 and the second retainer 2412 of the retainer 241 restricting the ball 242 therein can be directly fixed to the base 222 through the retainer mounting position 2234.
  • adhesive materials such as glue can be set on the retainer 241 so that the retainer 241 is stably set on the base driving part 223 to form a corresponding auxiliary effect on the movement of the lens carrier 211.
  • the auxiliary member 24 further includes a buffer portion 243, which is mainly made of an elastic material to prevent the lens carrier 211 from excessively moving.
  • the buffering part 243 is provided on the lens carrier 211.
  • the lens carrier 211 can move up and down along the direction of the optical axis under the action of the driving part 23.
  • the buffering part 243 is provided on the lens carrier 211 to effectively protect the movement of the lens carrier 211.
  • the buffer hole 2123 is reserved on the first structural member 212 of the lens carrier 211.
  • the buffer hole 2123 is provided on the upper surface of the first structural member 212 of the lens carrier 211.
  • the number of the buffer holes 2123 is at least two, which can be respectively provided at the focus position on the upper surface of the first structural member 212.
  • the buffering part 243 includes at least two rubber pads 2431, which are provided in the buffer holes 2123 reserved on the lens carrier 211.
  • the lower surface of the rubber pad 2431 is correspondingly provided with the base bearing part 224 of the base 222, and the position of the base bearing part 224 corresponding to the rubber pad 2431 has the buffer groove 2244.
  • the rubber pad 2431 fixed on the lens carrier 211 can move with the movement of the lens carrier 211. When the lower surface of the rubber pad 2431 abuts against the buffer groove 2244 on the base bearing part 224, it can form a corresponding protective effect on the lens carrier 211.
  • the driving motor 20 of the present invention further has a sensing part 25, which is mainly used to sense the position of the movable part 21.
  • the movable part 21 is implemented as a lens carrier 211, that is, the sensing part 25 is mainly used to sense the position of the lens carrier 211.
  • the sensing part 25 includes a position sensor 251 and a position detection magnet 252.
  • the position sensor 251 is arranged on the side of the coil 232.
  • the coil 232 is fixed on the circuit board 233, so the position sensing magnet 251 is fixed on the circuit board 233 to supply the current required for its operation.
  • the position detection magnet 252 is arranged on the lens carrier 211, specifically, on the second structural member 213 of the lens carrier 211.
  • the position detection magnet 252 and the magnet 231 of the driving part 23 can be of the same structure. By sensing the change of the magnetic field around the magnet 231, the position of the lens carrier 211 can be obtained. Furthermore, by feeding back the position information of the lens carrier 211 to the control center of the drive motor 20, the lens carrier 211 is moved to a predetermined position through a preset program to obtain a clear image.
  • the sensing unit 25 may also include a plurality of position sensing sensors 251 to more accurately detect the position of the lens carrier 211.
  • the specific information feedback mechanism of the drive motor 20 and the specific working principle of the control center are not the focus of the present invention and will not be described in detail herein.
  • the present invention further provides an optical lens 10 adapted to the driving motor 20.
  • the optical lens 10 and the driving motor 20 are installed to form an optical lens driving assembly.
  • the optical lens driving assembly drives the optical lens 10 along the optical axis through the driving motor 20.
  • the drive motor 20 is required to move in a certain direction, while ensuring the miniaturization of the overall structure.
  • the present invention provides an optical lens 10 adapted to the drive motor 20, wherein the optical lens 10 is a split optical lens, which includes a plurality of optical lens groups, which are sequentially arranged along the direction of the optical axis.
  • the drive motor 20 only needs to drive part of the lens group to move to obtain a clear image, and the weight of the part of the lens group is much less than the weight of the entire lens, so the requirement for the driving force of the drive motor 20 can be reduced.
  • the optical lens 10 can be implemented as three lens groups, which include a first lens group 11, a second lens group 12 and a third lens group 13.
  • the first lens group 11 includes a first lens group 111 and a first lens barrel 112
  • the second lens group 12 includes a second lens group 121 and a second lens barrel 122
  • the third lens group 13 includes a third lens group 131 and a third lens barrel 132.
  • the number of lenses in the first lens group 111, the second lens group 121 and the third lens group 131 is at least one.
  • the first lens group 11, the second lens group 12 and the third lens group 13 are sequentially distributed along the direction of the optical axis to form an imageable optical system, wherein the second lens group 12 can be driven by the driving motor 20 to move along the direction of the optical axis, and the first lens group 11 and the third lens group 13 are fixedly arranged relative to the driving motor 20, that is, the second lens group 12 is arranged between the first lens group 11 and the third lens group 13. There is a certain gap between the first lens group 11 and the third lens group 13 and the second lens group 12, so as to reserve space for adjusting the second lens group 12 in the optical axis direction.
  • the driving motor 20 provided in the present invention comprises a movable part 21, a fixed part 22, a driving part 23 and an auxiliary part 24.
  • the movable part 21 is implemented as the lens carrier 211.
  • the lens carrier 211 is mainly used to carry the movable lens group.
  • the movable lens group in the present invention is the second lens group 12, that is, the second lens group 12 is arranged on the movable part 21. Under the action of the driving part 23, the lens carrier 211 drives the second lens group 12 to move along the direction of the optical axis.
  • the fixed part 22 is in a fixed state relative to the movable part 21 during operation.
  • the fixed part 22 is fixedly arranged with the first lens group 11 and the third lens group 13 to provide corresponding installation space for the first lens group 11 and the third lens group 13.
  • the first lens group 11 is arranged on the first light hole 2211 of the housing 221
  • the third lens group 13 is arranged in the base bearing part 224 of the base 222.
  • the side of the third lens barrel 132 of the third lens group 12 has a buckle structure, and the buckle structure cooperates with the lens buckle groove 2247 on the base bearing part 224, so that the third lens group 13 is fixed on the base bearing part 224 through the cooperation between the buckle structure and the lens buckle groove 2247.
  • the buckle structure is used to fix the third lens group 13, compared with Compared with the traditional method of directly using glue to fix the third lens group 13, the influence of glue performance changes on the optical performance of the optical lens can be effectively solved.
  • the outer side of the lens barrel 132 of the third lens group 13 may have an external thread
  • the base bearing part 224 on which the third lens group 13 is installed may have an internal thread.
  • the third lens group 13 matches the internal thread on the base bearing part 224 through the external thread on the third lens group 13, so as to fix the third lens group 13 on the base bearing part 224.
  • the specific fixing method of the third lens group 13 and the base bearing part 224 can be any one of a snap-on type or a threaded connection, and no corresponding limitation is made here.
  • the optical lens 10 is set as a split optical lens, so that the drive motor 20 drives part of the lens group of the optical lens to achieve focusing, which can effectively reduce the driving force requirements of the drive motor 20.
  • the movable lens group i.e., the second lens group 12
  • a second structural member 213 is formed by extending downward on one side of the lens carrier 211.
  • the corresponding track groove 2133 is set on the second structural member 213, so that the ball 242 can move along the direction defined by the track groove 2133, thereby assisting the lens carrier 211 to move along the direction of the optical axis to reduce the resistance of the lens carrier 211 to move.
  • the ball 242 is set inside the retaining frame 241, and the retaining frame 241 includes multiple components, which can limit the ball 242 inside the retaining frame 241, and the ball 242 can roll freely inside the retaining frame 241, and at the same time, it can assist the movement of the lens carrier 211 to reduce the driving force requirements of the drive motor 20, thereby realizing the miniaturization of the overall structure of the drive motor 20.
  • the retaining frame 241 can confine the ball 242 inside to prevent the ball 242 from falling off.
  • the ball 242 and the retaining frame 241 can be combined into an integral structure for assembly, which can further improve the assembly accuracy while simplifying the assembly process of the drive motor 20, solve the problems of difficulty and size of conventional ball motor assembly, and utilize large-scale industrial production.
  • the driving part 23 is mainly used to provide the driving force required for the movement of the movable part 21.
  • the auxiliary structure 24 will be used to assist the movement of the movable part 21. While reducing the friction force of the movable part 21 relative to the fixed part 22, it can also effectively ensure the movement accuracy of the movable part 21.
  • the sensing part 25 is arranged on the fixed part 22, corresponding to the position of the movable part 21, so as to detect the position of the movable part 21 in real time and ensure the adjustment accuracy of the movable part 21.

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Abstract

本发明提供一种驱动马达，在活动部的一侧设置相应的轨道槽，将滚珠设置在保持架的内部，其中，保持架由至少两部分结构组成，组合形成的保持架内部具有一滚珠安装腔，以将滚珠限制在滚珠安装腔内部，滚珠的一侧与轨道槽接触，另一侧被限制在保持架中。将滚珠保持架设置在活动部轨道槽对应的位置，在驱动件的作用下，使得活动部可相对于滚珠保持架滑动，以减小活动部移动时的摩擦力；进一步的，光学镜头包括多个镜头组，将其中部分镜头组设置在滚珠马达的活动部上，利用驱动件驱动部分镜头可动，以实现拍摄过程中的对焦作用，同时减小对焦驱动力的要求，从而实现整体结构的小型化。

Description

一种光学镜头驱动马达 技术领域
本发明涉及摄像模组镜头驱动装置技术领域，尤其涉及一种滚珠马达驱动组件。
背景技术
在摄像模组的成像过程中，为了更好的提升摄像模组的成像质量，可在摄像模组结构中配置相应的驱动装置，以驱动光学镜头沿着光轴的方向移动从而得到更清晰的图像。现有技术中一般选择的驱动装置为马达结构，如滚珠马达、SMA马达或者压电马达结构等，为了进一步的提升摄像模组的成像质量，需要对光学镜头做相应的改进。如增加光学镜头的镜片数量、将光学镜头中塑料镜片替换为玻璃镜片等都会有效的提升光学镜头的成像质量，但同时提升光学镜头成像质量的措施，也会进一步的增加光学镜头的重量，而光学镜头重量的增加将会要求驱动装置提供更大的驱动力。
为了迎合终端设备轻薄化的趋势，配置在移动终端中的摄像模组需要实现整体结构的小型化，组成摄像模组的各元件也需要实现相应的结构优化。而光学镜头成像质量提升已经成为不可逆转的趋势，而如何增加驱动光学镜头移动的驱动力是目前需要解决的问题。进一步，通过增加线圈的匝数或增加磁铁的体积都会增加驱动装置的驱动力，但是随着驱动力的增加也会使得驱动装置的尺寸增加，不符合摄像模组小型化的发展趋势。
如何解决驱动装置小型化和驱动力提升之间存在的矛盾，是摄像模组领域极为关注的问题，现有方案中，存在一种技术方案，将光学镜头设置为分体式光学镜头，利用驱动装置驱动其中的部分镜头组移动从而得到较为清晰的成像。但如何实现部分镜头组移动的具体结构并无详细的说明，同时在驱动部分镜头组移动实现对焦的情况下如何实现整体结构的小型化，也没有可行的方案。
针对上述存在的问题，本方案提供一种滚珠马达及其驱动组件，可以有效的解决上述存在的部分或大部分问题。
发明内容
为了提升摄像模组的成像质量并同时实现整体结构的小型化，本发明提供了一种滚珠马达及其镜头组件，通过将光学镜头分为多个镜头组，沿着光轴的方向依次为第一镜头组、第二镜头组和第三镜头组，将滚珠马达配置在第二镜头组上可有效驱动第二镜头组沿着光轴的方向移动，以得到清晰的成像。其中，第一镜头组和第三镜头组始终保持固定状态，第二镜头组在第一镜头组和第三镜头组形成的空间内沿着光轴的方向移动，而滚珠马达只需驱动第二镜头组移动，可有效的降低对于驱动力的要求。
进一步的，该驱动马达利用磁铁和线圈等结构作为其驱动力，将第二镜头组容纳在该驱动马达的载体上，为了缩小该驱动马达的尺寸，在驱动马达的其中一个侧面上设置滚珠保持架结构。其中，该滚珠保持架至少为两个部分，其中间形成一滚珠容纳槽，该滚珠容纳槽的直径大于该滚珠的直径，将滚珠限制在其滚珠容纳槽内部的同时可保证该滚珠相对于该滚珠容纳槽自由滚动。该滚珠的一侧面与该镜头载体上预留的轨道槽相接触，使得滚珠可辅助该第二镜头组移动，可有效减小该第二镜头组沿着光轴方向移动时的阻力。同时，将磁铁线圈设置在镜头载体的其中一侧，利用镜头载体侧面向下延伸形成磁铁安装位，可进一步提高元件的集成度，进而保证模组结构的小型化。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，通过在光学镜头的一侧设置相应的驱动结构，在驱动光学镜头沿着光轴移动的同时，实现驱动马达结构的小型化。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，将光学镜头沿着光轴方向设置为第一镜头组、第二镜头组和第三镜头组，利用驱动马达驱动第二镜头组移动以得到清晰的成像。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，在镜头载体的一侧向下延伸形成磁铁安装部，将第二镜头组与磁铁安装部设置在同一个元件上，可以实现驱动马达的小型化。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，在镜头载体的一侧向下延伸形成的磁铁安装部上预留有轨道槽，滚珠可沿着预留的轨道槽移动，在保证镜头移动准直度 的同时，可有效降低对驱动力的要求。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，在与磁铁安装位对应的基座上设置有基座驱动部，线圈被设置于基座驱动部上与磁铁的安装位置相对设置，以使得磁铁和线圈可发生相互作用。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，驱动马达的基座包括一基座驱动部和一基座承载部，其中，基座驱动部和基座承载部被设置在同一个平面上，以保证整体结构的紧凑性。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，基座驱动部和基座承载部被相邻设置，其中，基座承载部用于安装第三镜头组，在基座承载部的通光孔内设置有镜头卡扣槽，可通过该卡扣槽将第三镜头组固定在基座承载部上，增加第三镜头组与基座承载部连接的稳定性。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，基座驱动部还设置有一辅助件，辅助件包括一保持架和至少一滚珠，该保持架被固定于该基座驱动部上，用以将滚珠限制在其内部，其中，该滚珠的一侧面与该镜头载体侧面的轨道槽相接触，以辅助该第二镜头组的移动。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，该滚珠保持架至少由两部分构成，其中，该保持架的内部具有一滚珠容纳槽，该滚珠容纳槽的直径大于该滚珠的直径，以使得该滚珠可在该滚珠容纳槽内自由滚动，以辅助该第二镜头组移动。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，该驱动马达上设置有缓冲垫，该缓冲垫被设置于镜头载体的四角位置，以防止该第二镜头组过度移动从而损坏驱动马达内部的元件。
本申请的其中一个实施例提供一种滚珠马达及其镜头组件，该驱动马达上的缓冲垫可被设置在该磁铁安装位的下方以防止该磁铁安装位与基座的上表面相碰撞，以对该基座形成保护作用。
为达到以上目的，本发明采用的技术方案为：
一种驱动马达，包括一活动部、一固定部、一驱动部和一辅助件，所述活动部在所述驱动部的作用下，可相对于所述固定部移动；
所述活动部被设置在所述固定部的上方，所述辅助件被设置于所述固定部与所述活动部相邻的一侧面，所述辅助件用于减小所述活动部相对于所述固定部移动时的阻力，其特征在于
所述辅助件包括一滚珠和一保持架，所述保持架由至少两部分结构组合而成，所述两部分结构组合后形成至少一滚珠安装腔，所述保持架具有至少一滚珠孔径，所述滚珠孔径的最小直径小于所述滚珠的直径，所述滚珠被限制在所述滚珠安装腔内，以使得所述滚珠可在所述滚珠安装腔内自由滚动，所述滚珠至少部分凸出所述滚珠孔径与所述活动部相接触。
附图说明
通过结合附图对本发明实施例进行更详细的描述，本发明的上述以及其他目的、特征和优势将变得更加明显。附图用来提供对本发明实施例的进一步理解，并且构成说明书的一部分，与本发明实施例一起用于解释本发明，并不构成对本发明的限制。在附图中，相同的参考标号通常代表相同部件或步骤。
图1为本发明中驱动马达整体结构示意图；
图2为本发明中该驱动马达的剖面结构示意图；
图3为本发明中该驱动马达各部件的分解结构示意图；
图4为本发明中该驱动马达的活动部的结构示意图；
图5为本发明中该基座的一个角度的结构示意图；
图6为本发明中该基座的另一个角度的结构示意图；
图7为本发明中滚珠保持架与该基座之间的分解示意图；
图8为本发明中多个滚珠保持架与该基座之间的分解示意图；
图9为本发明中保持架的分解结构示意图；
图10为本发明中驱动马达与光学镜头安装后的剖面示意图；
图11为本发明中驱动马达与光学镜头安装后的整体结构示意图；
图12为本发明中光学镜头驱动组件的结构示意图。
具体实施方式
下面，结合具体实施方式，对本发明做进一步描述，需要说明的是，在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
在本发明的描述中，需要说明的是，对于方位词，如有术语“中心”、“横向”、“纵向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示方位和位置关系为基于附图所示的方位或位置关系，仅是为了便于叙述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定方位构造和操作，不能理解为限制本发明的具体保护范围。
需要说明的是，本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本申请的说明书和权利要求书中的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以是接触连接或通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
参考图1-图12，本发明提供一种驱动马达20，包括一活动部21、一固定部22、一驱动部23、一辅助件24和一感测部25，该活动部21在该驱动部23的作用下可相对于该固定部22移动。其中，该辅助件24被设置于该活动部21与该固定部22之间，该辅助件24主要用于减小该活动部21相对于该固定部22移动时的摩擦力，以降低该活动部21移动时对于驱动力的要求。进一步的，该辅助件24还具有缓冲作用，以防止该活动部21的过度移动，从而提升该驱动马达20调整的准确度。该感测部25被设置于该活动部25的底面，以实时感测该活动部21所处的位置，将该活动部21所处的位置信息反馈给驱动马达20，以提升该驱动马达20调整的精度。
具体的，如图2和图11所示，本发明中的该驱动部23包括一磁铁231、一线圈232以及导通该线圈232的线路板233，该磁铁231被设置在该活动部21上，可随该活动部21的移动而移动，该线圈232被设置在该固定部22上，在该驱动部23工作的过程中，该线圈232始终处于固定状态。进一步的，该驱动部23还包括一线路板233，该线路板233包括一软板主体234、一支撑基板235和一焊接引脚236，该软板主体234上具有一线圈安装位和一感测器安装位，该线圈安装位主要用于固定并导通该线圈232，以提供该线圈232工作过程中所需的电流，该感测器安装位用于提供感测元件的安装位置，以实时感测该活动部21的实时位置信息。在一种优选的实施方式中，该软板主体234与该支撑基板235可实施为同一个结构，该支撑基座235内部设置有该驱动马达20的部分线路，该焊接引脚236一端与在该支撑基板235连接，另一端与外部的电源装置导通，以提供该驱动马达20工作所需的电流。
如图2和图3所示，具体的，该驱动马达20的活动部被实施为一镜头载体211，该镜头载体211主要用于承载可动镜头组，即将需要移动的光学镜头组与该镜头载体211固定，当该镜头载体211在驱动力的作用下移动时，可带动与该镜头载体211固定的光学镜头组移动，进而实现部分光学镜头组位置的调整。当构成光学系统的部分光学镜头组移动时，可改变整个光学系统的部分光学参数，从而可根据拍摄物体的实际情况得到更为清晰的成像，该镜头载体211带动部分光学镜头组沿着光轴的方向移动，可得到更清晰的成像。该镜头载体211作为驱动马达20中的活动部件，其上被设置相应的驱动件，在该驱动件的作用下，使得该镜头载体211带动部分镜头组相对于该固定部22移动，以实现该部分镜头组位置的调整，从而得到更 为清晰的成像。
如图4所示，在一种具体的实施例中，该镜头载体211包括第一结构件212和第二结构件213，第一结构件212主要用于承载可动镜头组，第二结构件主要用于安装部分驱动件，其中，该第二结构件213自该第一结构件212的一侧面向下延伸形成，在制造的过程中，可使得该第二结构件213与该第一结构件212一体成型以简化该镜头载体211的制造工艺。进一步的，该第一结构件212上具有一第二通光孔2121、一镜头承靠端面2122、一缓冲孔2123和一保护卡位2124。其中，该第二通光孔2121位于该第一结构件212的上表面，其内部主要用于容纳可动镜头组，以使得该可动镜头组与该镜头载体211相固定，该可动镜头组的光轴与该第一结构件212上的第二通光孔2121的中心保持一致，以使得光线尽可能多的通过该第二通光孔2121，从而保证摄像模组的成像质量。
具体的，该镜头承靠端面2122被设置于该第一结构件212的上表面，该镜头承靠端面2122围绕该第二通光孔2121设置，其主要用于固定可动镜头组，以使得该可动镜头组被固定在该第一结构件212上。进一步的，为防止该第一结构件212带动可动镜头组过度移动，该第一结构件212上还设置有多个缓冲孔2123和保护卡位2124，该缓冲孔2123被设置在该第一结构件212的上表面。其中，该缓冲孔2123为自该第一结构件212的表面向下凹陷形成的一圆柱形凹槽，在一种优选的实施例中，该缓冲孔2123的数量可以为四个，其被均匀设置在该第一结构件212上表面，具体的围绕该第二通光孔2121的周围设置。该缓冲孔2123的内部可由柔性材料制成的缓冲结构，该缓冲结构将会结合辅助件24做详细的阐述，此处不做相应的赘述。
本发明中，该活动部21被实施为镜头载体211，该镜头载体211在驱动件的作用下可沿着光轴的方向移动，具体的光轴的方向如图中所示，该镜头载体211可沿着光轴的方向上下移动。为进一步保证该镜头载体211移动的可靠性，该镜头载体211上设置相应的保护结构及本发明中的所述的辅助件24，该辅助件24中具有相应的缓冲结构可保护该镜头载体211。其中，该缓冲结构包括设置在第一结构件212上的该缓冲孔2123和该保护卡位2124，该缓冲孔2123被设置在该第一结构件212上，可用于防止该镜头载体211沿着光轴的方向过度移动。该保护卡位2124被设置在该第一结构件212的其他侧边，除了延伸出第二结构件213的侧边， 其他侧边都可设置至少一个保护卡位2124。在一种具体的实施例中，该保护卡位2124的数量有三个，其分别设置在该第一结构件212的侧边，其中，该保护卡位2124自该第一结构件212的侧面向下延伸形成。该保护卡位212的长度小于该第一结构件213侧面的长度，其主要用于防止该镜头载体211沿着光轴的方向过度移动，自该第一结构件213的侧面延伸形成的该保护卡位2124，其沿着光轴方向的高度小于该镜头载体211的可动行程，从而对该镜头载体211形成保护作用。
如图4所示，在一种具体的实施例中，该第二结构件213自该第一结构件212的一侧面向下延伸而形成，该第二结构件213上具有一磁铁安装部2131、一注塑件安装部2132和一轨道槽2133，该磁铁安装部2131主要用于固定该驱动部23中的部分驱动件。其中，该磁铁安装部2131与该轨道槽2133位于该第二结构件213的侧面上，该轨道槽2133主要用于限制滚珠移动的路径，以使得该滚珠可沿着光轴的方向移动。其中，该注塑件安装部2132可以与该第二结构件213一体成型，也可以直接成像后与该第二结构件213进行固定，该注塑件安装部2132主要用于增加该第二结构件213的强度。在一种优选的实施例中，该镜头载体211可以为金属材料，直接在金属材料上形成该滚珠槽2133，其成型难度较大且精度也比较难控制。故采用本发明中提供的方案，直接在第二结构件213上形成一方形通孔，将该注塑件安装部2132固定在其方形通孔的内侧面以形成该轨道槽2133，不仅可以有效解决金属材料难以成型的问题，还可以保证形成的该轨道槽213的精度。
如图1所示，本发明中相对于该活动部21处于固定状态的为固定部22，该固定部22包括一外壳221和一基座222，该外壳221被设置于驱动马达20的外表面，可将该驱动马达20其他的元件包覆在其内部以对其他元件形成保护作用。其中，该外壳221上具有一第一通光孔2211和外壳壳体2212，该第一通光孔2211主要用于外部的光线进入到摄像模组的内部以成像，该外壳壳体2212围绕该第一通光孔2211设置，该外壳壳体2212的内部可形成一容纳空间，可将该驱动马达20的组成元件容纳在其内部。进一步的，该外壳壳体2212可由金属材料制成，以增大该外壳221的强度从而更好的保护该驱动马达20内部的元件，同时由于金属材料的导磁作用，可使得外壳221在该驱动部23的作用下被稳定吸附。
如图3、图5至图8所示，具体的，本发明中的该固定部22还包括一基座222，该基 座222包括一基座驱动部223和一基座承载部224，该基座驱动部223主要用于设置该驱动马达20的部分驱动件，该基座承载部224提供安装光学镜头的位置。其中，该基座驱动部223和该基座承载部224被设置于同一个平面上，该基座驱动部223和该基座承载部224相邻设置，该基座驱动部223可利用模具结构与该基座承载部224一体成型，在简化该基座222成型工艺的同时还可进一步提升该基座222的成型精度。在一种具体的实施例中，该基座驱动部223与该镜头载体211上的第二结构件213的位置相对应，即基座驱动部223与该镜头载体211上的该第二结构件213设置于该驱动马达20的同一侧。该镜头载体211上的第二结构件213上预留有该磁铁安装部2131，对应的该驱动部23上的部分驱动件被固定于该磁铁安装部2131上，与该镜头载体211上的第二结构件213对应的该基座222上的该基座驱动部223设置有该驱动部23上的另一部分驱动件。当该驱动部23工作时，设置在该镜头载体211上的驱动件与该基座驱动部223上的驱动件相互作用，以使得该镜头载体211相对于该基座222发生移动。进一步的，该镜头载体211上固定有可动镜头组，当该镜头载体211相对于该基座222移动时，可带动该可动镜头组移动，从而实现该光学镜头部分镜头组沿着光轴方向移动，以得到清晰的成像。
如图5和图6所示，本发明中，该基座驱动部223上还具有一保持架安装位2234，该保持架安装位2234被设置在该基座支架2232的两端，与该基座支架2232相邻设置，在一种具体的实施例中，该保持架安装位2234设置在该基座支架2232的侧边。在一种优选的实施方式中，该保持架安装位2234与该基座承靠部2231可一体成型，即利用预制模具直接形成该保持架安装位2234的形状，可通过注塑工艺直接形成该保持架安装位2233。其中，该保持架安装位2234上具有一凹槽，该凹槽可用于容纳滚珠等结构，以对滚珠等结构形成一容纳作用，该保持架安装位2234的具体构造，后续将结合辅助件24进行详细的阐述，此处不做相应的赘述。
如图5至图8所示，在一种具体的实施例中，该基座驱动部223具有一底部承靠座2231、一基座支架2232、一线路板安装位2233、一保持架安装位2234和一支架通孔2235，其中，其他部件都被设置在该底座承靠部2231上。该基座承靠部2231上沿着光轴的方向向上延伸形成一基座支架2232，该基座支架2232中间具有一贯穿的该支架通孔2235，该底座承靠部2231 与该基座支架2232之间形成一线路板安装位2233，该线路板安装位2233的一侧位于该底部承靠位2231上，另一侧位于该基座支架2232上。其中，该线路板安装位2233位于该支架通孔2235中，该线路板安装位2233上固定有该线圈232，该线圈232被容纳在该支架通孔2235内部，以充分利用该基座支架2232的空间从而实现元件的紧凑设置。该线圈232通过设置在该线路板安装位2233上的该支撑基板235导通，其中，该基座驱动部223上的该线路板安装位2233主要用于安装该驱动部23内的该线路板233，该线路板233上又具有一线圈安装位，该线圈232被设置在该线圈安装位时，此时该线圈232结构被容纳于该基座驱动部223上的该支架通孔2235内部，以充分利用该基座驱动部223上的空间，从而实现整体结构的紧凑设置。
在本发明中，该基座还具有一基座承载部224，该基座承载部224上具有一第三通光孔2241、一承载底面2242、一模塑座2243、一缓冲凹槽2244、一限位卡槽2245、一线圈避让位2246和一镜头卡扣槽2247，其中，该承载底面2242与该基座驱动部223中的该底部承靠位处于同一个平面上，该基座承靠位2231与该承载底面2242可一体成型。具体的，该第三通光孔2241位于该承载底面2242的中间位置，以允许外部的光线经由该第三通光孔2241到达该摄像模组的感光芯片。进一步的，该模塑座2243自该承载底面2242沿着光轴的方向向上延伸而形成，该模塑座2243其本身具有一定的高度，其内部形成一镜头安装位，其中，该镜头安装位可与该第三通光孔2241为同一个结构。该模塑座2243的上表面形成有多个缓冲凹槽2244，该缓冲凹槽2244与该镜头载体211上的该缓冲孔2123的位置相对应，即该镜头载体211被设置于该基座222的上表面，该镜头载体211上的该缓冲孔2123与该基座222上的该缓冲凹槽2244的位置相对应，以预留出该镜头载体211的活动空间。
进一步的，该基座承载部224上该限位卡槽2245被设置于该模塑座2243的侧边，该镜头载体211上的该第一机构件212上具有该保护卡位2124，该保护卡位2124自该镜头载体211的侧面向下延伸形成。与该保护卡位2124向下延伸的位置，在该基座承载部224上的该模塑座2243的侧边形成该限位卡槽2245，该保护卡位2124延伸入该限位卡槽2245内部，其中，该限位卡槽2245的高度大于该保护卡位2124的高度，在保证该镜头载体211正常移动的同时，也可对该镜头载体211形成有效的保护。在一种具体的实施例中，为了进一步保证该结构的紧凑性，在该基座驱动部223与该基座承载部224相邻的位置，在该基座承载部224上形 成一线圈避让位2246，该线圈避让位2246的正投影位置与该线圈232的安装位置相一致。在该基座承载部224的该承载底面2242上形成有该镜头卡扣槽2247，该镜头卡扣槽2247位于该第三通光孔2241的内侧面上，以通过该镜头卡扣槽2247与该光学镜头固定。一般情况下，光学镜头可通过胶水粘接等方式与马达载体固定，而本方案通过卡扣结构使得该光学镜头与该马达载体相固定，可有效解决胶水受热性能变化影响该驱动马达的驱动精度。
如图7至图10所示，本发明还提供一种辅助件24，该辅助件24包括一保持架241、一滚珠242和一缓冲部243，该辅助件24主要用于减小该镜头载体211移动时的阻力以降低对该驱动马达20的驱动力的要求，同时该辅助件24还提供一种缓冲部243，以防止该镜头载体211过度移动而损坏该驱动马达20的部分元件。具体的，该辅助件24包括一保持架结构和一缓冲结构，该保持结构包括该保持架241和该滚珠242，该保持架241用于容纳该滚珠242，其中，该保持架241至少由两个对称的部分构成。
如图9所示，在一种优选的实施方式中，该保持架241包括对称设置的第一保持架2411和第二保持架2412，该第一保持架2411和该第二保持架2412组合后形成一滚珠安装腔，该滚珠242被限制在该滚珠安装腔内部，以提供该滚珠242的安装位置。进一步的，该第一保持架2411和该第二保持架2412上具有至少一滚珠孔径，所述滚珠孔径的最小直径为r，所述滚珠242的直径为R，其中，所述滚珠孔径的最小直径r小于所述滚珠242的直径R，以将所述滚珠242限制在其滚珠孔径内。通过所述滚珠孔径将所述滚珠242限制在所述保持架241上，所述滚珠242可在所述保持架241形成的滚珠安装腔内自由滚动，其中，限制在该保持架241内部的该滚珠242其部分结构突出所述滚珠安装腔与该镜头载体211上预留的该轨道槽2133相接触，即该滚珠242的一侧被限制在该轨道槽2133内，使得该滚珠242可沿着该轨道槽2133限制的方向移动。具体的，本发明中该轨道槽2133的预设的方向与光轴的方向一致，故在该滚珠242的辅助作用下，该镜头载体211可沿着光轴的方向移动。
进一步的，该保持架241被设置于该基座驱动部223上预设的该保持架安装位2234上，该保持架安装位2234的内部具有一凹陷结构，该滚珠242的部分被容纳于该凹陷结构内部，该保持架241被固定在该保持架安装位2234上，该保持架安装位2234和该保持架241形成的容纳空间将该滚珠242容纳在其内部，使得该滚珠242在其形成的内部空间内可滚动。 具体的，该滚珠242的一侧与该镜头载体211上的该轨道槽2133相接触，使得该轨道槽2133可在该滚珠242的辅助作用下沿着光轴的方向移动，将该滚珠242限制在该保持架241和该保持架安装位2233形成的空间内，使得该滚珠242在该空间内自由滚动，可有效限制该滚珠242的位置，防止该滚珠242滚落以影响该驱动马达20的机械性能。使用多部分的该保持架241的结构，可将该滚珠242限制在该保持架241内部，再将该滚珠242与该保持架241形成的组合结构安装到该保持架安装位2234上，在简化该滚珠242组装工艺的同时，由于该保持架241对该滚珠242的限制作用，还可进一步提升该驱动马达20的组装精度，进一步提升该驱动马达20的组装效率。
如图8和图9所示，在另一种实变形实施例中，为了增加该镜头载体211的可动行程，提供一种多滚珠辅助移动的结构，其中，该滚珠242的数量为多个，将多个该滚珠242限制在该保持架241中，具体的，该保持架241包括一第一保持架2411和一第二保持架2412，该第一保持架2411和该第二保持架2412上具有多个贯穿的通孔。在一种优选的实施例中，该滚珠242一侧的数量为两个，对应的该第一保持架2411和该第二保持架2412上分别具有两个贯穿的通孔，该第一保持架2411和该第二保持架2412上通孔设置在位置相一致。其中，该第一保持架2411与该第二保持架2412组合后可将该滚珠242限制在其内部的通孔位置，该滚珠242的部分结构从该贯穿的通孔的两侧延伸而出，该滚珠242延伸出的一侧与该镜头载体211上的该轨道槽2133相接触以辅助该镜头载体211的移动。
进一步的，该保持架241与该滚珠组合的结构被安装在该保持架安装位2234上，该保持架241与该滚珠242组合后的结构相比与单滚珠的结构，其在光轴方向上的高度大于单滚珠结构在光轴方向上的高度。为了便于组装该多滚珠的保持架结构，将该保持架安装位2234设置为容纳槽，该保持架241的该第一保持架2411与该第二保持架2412将该滚珠242限制在其内部形成的结构，可直接通过该保持架安装位2234与该基座222固定设置。为了进一步保证该保持架242在容纳槽内的稳定性，可通过在该保持架241上设置胶水等粘接物质，使得该保持架241被稳定设置在该基座驱动部223上，以对该镜头载体211的移动形成相应的辅助作用。
如图2、图3和图11所示，具体的，为了防止该镜头载体211的过度移动，该辅助件24还包括一缓冲部243，该缓冲部243主要由具有弹性的物质制成，以对该镜头载体211的过 度移动起到相应的缓冲作用，对该驱动马达20内部的元件起到相应的保护作用。该缓冲部243被设置在该镜头载体211上，该镜头载体211在该驱动部23的作用下可沿着光轴的方向上下移动，将该缓冲部243设置在该镜头载体211上，可对该镜头载体211的移动形成有效的保护作用。在一种优选的实施方式中，该镜头载体211的第一结构件212上预留有该缓冲孔2123，该缓冲孔2123被设置在该镜头载体211的该第一结构件212的上表面，该缓冲孔2123的数量至少为两个，可分别设置在该第一结构件212上表面的对焦位置。其中，该缓冲部243包括至少两个橡胶软垫2431，该橡胶软垫2431设置在该镜头载体211上预留的该缓冲孔2123内。对应的，该橡胶软垫2431的下表面对应设置有该基座222的基座承载部224，该基座承载部224上与该橡胶软垫2431对应的位置具有该缓冲凹槽2244，固定在该镜头载体211上的该橡胶软垫2431可随着该镜头载体211的移动而移动，当该橡胶软垫2431的下表面抵接到该基座承载部224上的该缓冲凹槽2244时，可对该镜头载体211形成相应的保护作用。
如图2所示，本发明中该驱动马达20还具有一感测部25，该感测部25主要用于感测该活动部21所处的位置，该活动部21被实施为镜头载体211，即该感测部25最主要用于感测该镜头载体211所处的位置。进一步的，该感测部25包括一位置传感器251和一位置检测磁铁252，该位置传感器251被设置在该线圈232的侧边，该线圈232被固定在该线路板233上，故该位置感测磁铁251被固定在该线路板233上以供给其工作所需的电流。该位置检测磁铁252被设置在该镜头载体211上，具体的设置在该镜头载体211的该第二结构件213上，该位置检测磁铁252与该驱动部23的该磁铁231可为同一个结构，通过感测该磁铁231周围磁场的变化情况，即可得出该镜头载体211所处的位置。进一步的，通过将该镜头载体211的位置信息反馈给该驱动马达20的控制中心，通过预设的程序使得该镜头载体211移动到预定的位置以清晰成像。该感测部25还可以包括多个位置感测传感器251以更为准确的检测该镜头载体211所处的位置，具体的该驱动马达20的信息反馈机制和控制中心的具体工作原理，并不是本发明的重点，此处不做相应的赘述。
如图9至图12所示，为了进一步降低对于该驱动马达20驱动力的要求，本发明还提供一种与该驱动马达20相适配的光学镜头10，该光学镜头10与该驱动马达20安装后形成一光学镜头驱动组件，该光学镜头驱动组件通过该驱动马达20驱动该光学镜头10沿着光轴的方 向移动以得到清晰的成像，同时保证整体结构的小型化。具体的，为了降低对于该驱动马达20驱动力的要求，本发明提供了一种与该驱动马达20相适配的该光学镜头10，其中，该光学镜头10为分体式光学镜头，其包括多个光学镜头组，沿着光轴的方向依次设置。该驱动马达20只需驱动部分镜头组移动即可得到清晰的成像，而部分镜头组的重量远小于整镜头的重量，故可以降低对该驱动马达20的驱动力的要求。
如图10所示，进一步的，在具体的实施方式中，该光学镜头10可实施为三个镜头组，其包括第一镜头组11、第二镜头组12和第三镜头组13，该第一镜头组11包括第一镜片组111和第一镜筒112，该第二镜头组12包括第二镜片组121和第二镜筒122，该第三镜头组13包括第三镜片组131和第三镜筒132。其中，该第一镜片组111、第二镜片组121和第三镜片组131中的镜片数量至少为一个。该第一镜头组11、第二镜头组12和第三镜头组13沿着光轴的方向依次分布以形成可成像的光学系统，其中，该第二镜头组12可被该驱动马达20驱动使其沿着光轴的方向移动，该第一镜头组11和该第三镜头组13相对于该驱动马达20被固定设置，即该第二镜头组12被设置于该第一镜头组11和该第三镜头组13之间。其中，该第一镜头组11和该第三镜头组13与该第二镜头组12之间分别存在一定的间隙，以预留出该第二镜头组12在光轴方向上调整的空间。
如图11所示，本发明中提供的该驱动马达20包括一活动部21、一固定部22、一驱动部23以及一辅助件24，该活动部21被实施为该镜头载体211，该镜头载体211主要用于承载可动镜头组，本发明中可动镜头组为该第二镜头组12，即该第二镜头组12被设置于该活动部21上，该镜头载体211在该驱动部23的作用下，带动该第二镜头组12沿着光轴的方向移动。该固定部22相对于该活动部21在工作中处于固定状态，该固定部22与该第一镜头组11和该第三镜头组13固定设置，为该第一镜头组11和该第三镜头组13提供相应的安装空间。其中，该第一镜头组11被设置在该外壳221的该第一通光孔2211上，该第三镜头组13被设置在该基座222的该基座承载部224中。
具体的，该第三镜头组12的该第三镜筒132的侧边具有卡扣结构，该卡扣结构与该基座承载部224上的该镜头卡扣槽2247相配合，以通过该卡扣结构与该镜头卡扣槽2247的配合，将该第三镜头组13固定在该基座承载部224上。利用该卡扣结构固定该第三镜头组13，相比 于传统的直接利用胶水粘接固定第三镜头组13的方式，可以有效解决胶水性能变化对该光学镜头光学性能的影响。在另一种变形实施例中，该第三镜头组13的该镜筒132的外侧可具有外螺纹，安装该第三镜头组13的该基座承载部224上可具有内螺纹，该第三镜头组13通过其上的外螺纹与该基座承载部224上的内螺纹相匹配，以将该第三镜头组13固定在该基座承载部224上。具体的该第三镜头组13与该基座承载部224的固定方式可以为卡扣式或螺纹连接的任一种，此处不做相应的限制。
本发明中，将光学镜头10设置为分体式光学镜头，使得该驱动马达20驱动该光学镜头的部分镜头群组以实现对焦，可有效降低对于该驱动马达20的驱动力的要求，具体的，将可动镜头群组即第二镜头组12设置在镜头载体211上，在镜头载体211的一侧向下延伸形成一第二结构件213，在该第二结构件213上设置相应的该轨道槽2133，使得该滚珠242可沿着该轨道槽2133限定的方向移动，从而辅助该镜头载体211沿着光轴的方向移动，以减小该镜头载体211移动的阻力。进一步的，将该滚珠242设置在该保持架241的内部，该保持架241包括多个组成部分，可将在该在滚珠242限制在其内部，该滚珠242可在该保持架241内部自由滚动，同时可辅助该镜头载体211的移动以减小对该驱动马达20驱动力的要求，实现该驱动马达20整体结构的小型化。
如图11所示，该保持架241可将该滚珠242限制在其内部，防止该滚珠242脱落，同时可将该滚珠242与该保持架241组合成整体结构进行组装，在简化该驱动马达20组装工艺的同时可进一步提升该组装的精度，解决常规的滚珠马达组装难度和尺寸等问题，利用大规模的工业化生产。该驱动部23主要用于提供该活动部21移动时所需的驱动力，该辅助结构24将用以辅助该活动部21的移动，在减小该活动部21相对于该固定部22移动摩擦力的同时，还可以有效的保证该活动部21移动的精度。该感测部25被设置于该固定部22上，与该活动部21所处的位置相对应，以实时检测该活动部21所处的位置，保证该活动部21调整的精度。
以上描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是本发明的原理，在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明的范围内。本发明要求的保护范围由所附的权利要求书及其等同物界定。

Claims (10)

  1. 一种驱动马达，包括一活动部、一固定部、一驱动部和一辅助件，所述活动部在所述驱动部的作用下，可相对于所述固定部移动；
    所述活动部被设置在所述固定部的上方，所述辅助件被设置于所述固定部与所述活动部相邻的一侧面，所述辅助件用于减小所述活动部相对于所述固定部移动时的阻力，其特征在于：
    所述辅助件包括一滚珠和一保持架，所述保持架由至少两部分结构组合而成，所述两部分结构组合后形成至少一滚珠安装腔，所述保持架具有至少一滚珠孔径，所述滚珠孔径的最小直径小于所述滚珠的直径，所述滚珠被限制在所述滚珠安装腔内，以使得所述滚珠可在所述滚珠安装腔内自由滚动，所述滚珠至少部分凸出所述滚珠孔径与所述活动部相接触。
  2. 根据权利要求1所述的驱动马达，其特征在于，所述固定部包括一基座和一外壳，所述外壳包覆在所述基座上，所述基座包括一基座驱动部和一基座承载部，所述基座驱动部与所述基座承载部相邻设置，其中，所述基座驱动部上具有一保持架安装位，所述保持架被设置在所述保持架安装位上。
  3. 根据权利要求2所述的驱动马达，其特征在于，所述活动部被实施为一镜头载体，所述镜头载体包括一第一结构件和一第二结构件，其中，所述第二结构件自所述第一结构件的一侧面向下延伸形成，所述第二结构件设置在与所述基座驱动部相同的一侧。
  4. 根据权利要求3所述的驱动马达，其特征在于，所述驱动部包括一磁铁和一线圈，所述第二结构件上具有一磁铁安装位，其中，所述磁铁被固定设置在所述磁铁安装位上，在所述线圈通电时，所述磁铁可带动所述镜头载体移动。
  5. 根据权利要求3所述的驱动马达，其特征在于，所述第二结构件与所述基座驱动部的一侧面相邻，所述第二结构件上设置有一轨道槽，所述轨道槽与凸出所述保持架内的所述滚珠相接触，以使得凸出所述保持架的所述滚珠被限制在所述轨道槽内。
  6. 根据权利要求2所述的驱动马达，其特征在于，所述基座驱动部沿着其底面向上延伸形成一基座支架，所述基座支架与所述底面形成一贯穿的支架通孔，其中，所述保持架安装位被设置在所述基座支架的两侧，所述保持架安装位具有一凹槽，以将所述保持架部分结构容纳在其内部。
  7. 根据权利要求2所述的驱动马达，其特征在于，所述基座上的所述基座承载部用于承 载光学镜头，其中，所述基座承载部上设置有多个镜头卡扣槽，所述光学镜头可通过所述镜头卡扣槽固定在所述基座上。
  8. 根据权利要求3-7任一所述的驱动马达，其特征在于，所述辅助件还包括一缓冲部，所述缓冲部被设置于所述镜头载体上，其中，所述镜头载体上预留有多个缓冲孔，所述缓冲部可被设置在所述缓冲孔内。
  9. 根据权利要求8所述的驱动马达，其特征在于，所述缓冲部由具有弹性的柔性材料制成，其中，所述缓冲部可被实施为橡胶软垫，所述橡胶软垫的数量可以与所述镜头载体上的缓冲孔的数量一致。
  10. 根据权利要求9所述的驱动马达，其特征在于，所述镜头载体上与所述缓冲孔对应的所述基座驱动部的位置，设置有相应的缓冲凹槽，所述缓冲凹槽为自所述基座驱动部上表面向内凹陷形成，以预留出所述缓冲部的缓冲空间。
PCT/CN2023/132203 2022-11-17 2023-11-17 一种光学镜头驱动马达 Ceased WO2024104451A1 (zh)

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