WO2021208173A1 - 镜头传动装置及镜头组件 - Google Patents

镜头传动装置及镜头组件 Download PDF

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Publication number
WO2021208173A1
WO2021208173A1 PCT/CN2020/090158 CN2020090158W WO2021208173A1 WO 2021208173 A1 WO2021208173 A1 WO 2021208173A1 CN 2020090158 W CN2020090158 W CN 2020090158W WO 2021208173 A1 WO2021208173 A1 WO 2021208173A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
assembly
lens
transmission device
drive
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Application number
PCT/CN2020/090158
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English (en)
French (fr)
Inventor
王尧
周帅宇
刘柯佳
吴龙兴
Original Assignee
诚瑞光学(常州)股份有限公司
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Application filed by 诚瑞光学(常州)股份有限公司 filed Critical 诚瑞光学(常州)股份有限公司
Publication of WO2021208173A1 publication Critical patent/WO2021208173A1/zh

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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
    • G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
    • 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
    • G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment

Definitions

  • the invention relates to the field of electronic equipment, in particular to a lens transmission device and a lens assembly used in portable electronic products.
  • the lens assembly includes a lens module and a lens transmission device for controlling the elevation or rotation of the lens module, and the lens transmission device includes a first motor for controlling the elevation and ejection of the lens module And a second motor for controlling the lens module to rotate after being ejected.
  • the purpose of the present invention is to provide a lens transmission device and a lens assembly to solve the problems of complex transmission structure, large space occupation, and low practicability.
  • the present invention provides a lens transmission device, which includes:
  • a drive assembly the drive assembly is used to provide a driving force
  • a first transmission component comprising a linear transmission component connected to the output end of the drive component and a rotary drive nut fixed to an end of the linear transmission component away from the drive component;
  • the second transmission component includes a second sleeve, a rotating component and a spring, the second sleeve is sleeved on an end of the linear transmission component away from the drive component and forms a sliding connection;
  • the rotation The assembly includes a rotating screw contained in the second sleeve and forming a threaded connection with the rotating drive nut, and a rotating shaft located outside the second sleeve and connected to an end of the rotating screw away from the drive assembly;
  • the spring is housed in the second sleeve and sleeved on the rotating screw at intervals, one end of the spring is fixed to an end of the second sleeve away from the drive assembly, and the other end of the spring is fixed to
  • the linear transmission assembly is connected with an external camera lens;
  • the drive assembly drives the linear drive assembly to move linearly in a first direction parallel to the axial direction of the rotating screw, and pushes the second drive assembly along the line through the interaction between the linear drive assembly and the spring Move in the first direction, when the second transmission assembly moves to the limit position along the first direction, the linear transmission assembly drives the rotary drive nut to move in the first direction so that the rotary screw is relatively
  • the rotating drive nut produces relative rotation, and drives the rotating shaft to rotate around the axial direction of the rotating screw.
  • the driving assembly includes a motor and a sliding screw connected to the output end of the motor;
  • the linear transmission assembly includes a first sleeve sleeved on the sliding screw at intervals and forming a threaded transmission connection with the sliding screw
  • the sliding drive nut is fixed to an end of the first sleeve close to the drive assembly and partially extends into the first sleeve, and the second sleeve is sleeved on the first sleeve The sleeve is away from one end of the drive assembly and forms a sliding connection.
  • the lens transmission device further includes a bearing support seat for supporting the sliding screw, and the bearing support seat includes a support plate, which protrudes from opposite ends of the support plate along the first direction.
  • An extension wall and a bearing fixedly installed on the extension wall, the sliding screw is fixed to the extension wall through the bearing, and the lens transmission device is fixed to an external mobile terminal through the support plate.
  • the first sleeve is provided with an escape opening extending therethrough, the extension wall extends through the escape opening into the first sleeve, and the escape opening extends along the first direction Until the first sleeve is close to the end surface of the drive assembly.
  • the second sleeve is provided with a limiting groove extending therethrough, the limiting groove extends along the axial direction of the second sleeve, and the first sleeve protrudes perpendicularly to the first direction.
  • a first limit post is provided, and the first limit post penetrates the limit slot.
  • the rotary drive nut is fixed to an end of the first sleeve away from the drive assembly, the first sleeve includes an inner surface facing the sliding screw, and the inner surface is convex toward the sliding screw. It extends to form a fixed wall, the fixed wall is surrounded to form a limiting hole, and the rotary drive nut is received in the limiting hole and fixed to the fixed wall.
  • one end of the spring is fixed to the second sleeve, and the other end is fixed to an end surface of the first sleeve away from the drive assembly.
  • the drive assembly further includes a reducer connected to the output end of the motor, and the sliding screw is connected to the output end of the reducer.
  • a second limit post is fixedly provided on the first sleeve, and the second limit post is fixedly connected to a part of the sliding drive nut extending into the first sleeve.
  • the first limit post and the second limit post are limit screws or limit pins.
  • the drive assembly includes an air cylinder;
  • the linear transmission assembly includes a first sleeve connected with the output end of the air cylinder, and the rotary drive nut is fixed to an end of the first sleeve away from the air cylinder,
  • the second sleeve is sleeved on an end of the first sleeve away from the cylinder and forms a sliding connection.
  • the present invention provides a lens assembly, which includes a camera lens module and the lens transmission device of the present invention, and the camera lens module is fixedly installed on the rotating shaft.
  • the driving assembly drives the linear transmission assembly to move linearly in a first direction parallel to the axial direction of the rotating screw, and the interaction between the linear transmission assembly and the spring pushes the second transmission assembly along Move in the first direction.
  • the linear transmission component drives the rotary drive nut to move in the first direction so that the rotary screw and the rotary drive nut rotate relative to each other, and drive the rotary shaft along the The axis of the rotating screw rotates;
  • the second transmission assembly is slidably connected to the first transmission assembly so that the two together form a single-bar structure, and a single drive assembly is arranged in conjunction with the horizontal-bar structure to realize the lens transmission device along the first
  • the lifting movement in one direction and the rotation movement around the first direction that is, a variety of motion control can be realized by one drive assembly.
  • This structure effectively reduces the space occupied by the drive assembly, and at the same time makes the transmission structure simpler, which is beneficial to The ultra-thin design of the mobile terminal improves the practicability.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the lens transmission device of the present invention.
  • FIG. 2 is an exploded schematic diagram of a part of the three-dimensional structure of the lens transmission device of the present invention
  • FIG. 3 is an exploded schematic diagram of another part of the three-dimensional structure of the lens transmission device of the present invention.
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the first sleeve of the lens transmission device of the present invention.
  • Figure 5 is a schematic cross-sectional view of Figure 4.
  • Figure 6 is a cross-sectional view taken along line A-A in Figure 1;
  • FIG. 7 is a schematic diagram of the three-dimensional structure of the lens assembly of the present invention.
  • FIG. 8 is a schematic cross-sectional view of the initial state of the lens assembly of the present invention.
  • FIG. 9 is a schematic cross-sectional view of the extended state of the lens assembly of the present invention.
  • FIG. 10 is a schematic cross-sectional view of the lens assembly of the present invention rotated by 180°;
  • FIG. 11 is a schematic cross-sectional view of the lens assembly of the present invention rotated by 360°.
  • the present invention provides a lens transmission device 100, which includes a driving assembly 1, a first transmission assembly 2, a second transmission assembly 3, and a bearing support 4.
  • the driving assembly 1 is used to provide driving force.
  • the drive assembly 1 includes a motor 11, a reducer 12 connected to the output end of the motor 11, and a sliding screw 13 connected to the output end of the reducer 12.
  • the reducer 12 is provided to remove the motor 11 Part of the rotation speed is converted to torque.
  • the sliding screw 13 has a more reliable rotation performance; of course, in other embodiments, it is also feasible not to provide a reducer.
  • the reducer is not provided, the sliding screw Connect directly to the output terminal of the motor.
  • the first transmission assembly 2 includes a linear transmission assembly 21 connected to the output end of the drive assembly 1 and a rotary drive nut 22 fixed to an end of the linear transmission assembly 21 away from the drive assembly 1.
  • the linear transmission assembly 21 includes a first sleeve 211 sleeved on the sliding screw 13 at intervals and a sliding drive nut 212 forming a threaded transmission connection with the sliding screw 13.
  • the sliding drive nut 212 is fixed to the first sleeve 211 close to the drive assembly
  • One end of 1 partially extends into the first sleeve 211
  • the rotating drive nut 22 is fixed to the end of the first sleeve 211 away from the drive assembly 1.
  • the first sleeve 211 is provided with an opening 2101 penetrating therethrough along a first direction (that is, the X-axis direction) parallel to the axial direction of the second transmission assembly 3, and the opening 2101 is located in the first sleeve 211 close to the drive assembly.
  • the sliding drive nut 212 is fixed to the opening 2101 and forms a first housing space 20 with the first sleeve 211;
  • the first sleeve 211 includes an inner surface 2111 facing the sliding screw 13 and the inner surface 2111 facing the sliding screw 13
  • the protrusions extend to form a fixed wall 2112.
  • the fixed wall 2112 surrounds and forms a limiting hole 2102 communicating with the first receiving space 20.
  • the rotary drive nut 22 is received in the limiting hole 2102 and fixed to the fixed wall 2112. This arrangement effectively avoids The relative rotation of the rotary drive nut 22 around the first direction is achieved.
  • the second transmission assembly 3 includes a second sleeve 31, a rotating assembly 32 and a spring 33.
  • the second sleeve 31 is sleeved on the end of the linear transmission assembly 21 away from the drive assembly 1 and forms a sliding connection, and the second sleeve 31 has a second accommodating space 30; more specifically, the second sleeve 31 is sleeved on the first sleeve
  • the barrel 211 has one end away from the driving assembly 1 and forms a sliding connection.
  • the rotating assembly 32 includes a rotating screw 321 received in the second receiving space 30 of the second sleeve 31 and a rotating shaft 322 located outside the second sleeve 31.
  • the rotating screw 321 and the rotating drive nut 22 form a threaded connection, and the rotating shaft 322
  • One end of the screw rod 321 is connected to one end of the rotating screw 321 away from the driving assembly 1, and the other end is used to connect an external camera lens.
  • the spring 33 is accommodated in the second accommodating space 30 of the second sleeve 31 and is sleeved on the rotating screw 321 at intervals.
  • One end of the spring 33 is fixed to the end of the second sleeve 31 away from the drive assembly 1, and the other end of the spring 33 is fixed to the straight line.
  • the transmission assembly 21, specifically, the other end of the spring 33 is fixed on the end surface of the first sleeve 211 away from the drive assembly 1.
  • the axial direction of the rotating screw 321 is defined as the axial direction of the second transmission assembly 3, and the first direction is parallel to the axial direction of the rotating screw 321.
  • the second sleeve 31 is provided with a limiting groove 310 extending therethrough along the first direction perpendicular to the first sleeve.
  • the second sleeve 31 extends in the axial direction.
  • the first sleeve 211 protrudes along the first direction to form a first limiting post 2113.
  • the first limiting post 2113 passes through the limiting groove 310; in order to avoid the first sleeve
  • the relative rotation between the barrel 211 and the sliding drive nut 212, the first sleeve 211 is also fixed with a second limiting post 2114, the second limiting post 2114 and the sliding drive nut 212 extend into the part of the first sleeve 211 Fixed connection; here, it should be noted that the first limit post 2113 and the second limit post 2114 are both limit screws or limit pins.
  • the bearing support 4 is used to support the sliding screw 13.
  • the bearing support base 4 includes a support plate 41, two extension walls 42 respectively protruding and extending from opposite ends of the support plate 41 along the first direction, and two extension walls 42 respectively fixedly installed on the two extension walls 42 A bearing 43;
  • the first sleeve 211 is provided with an escape opening 2103 passing through it along a first vertical direction, and the escape opening 2103 extends along the first direction from the end surface of the fixed wall 2112 close to the receiving space 20 to the first sleeve 211 close to
  • the extension wall 42 partially passes through the avoiding opening 2103 and extends into the first sleeve 211.
  • the opposite ends of the sliding screw 13 are respectively fixedly supported by the two extension walls 42 through two bearings 43.
  • the lens transmission device 100 The mobile terminal fixed to the outside by the support plate 41.
  • the drive assembly 1 is used to drive the linear drive assembly 21 to move linearly in the first direction, and the second drive assembly 3 is pushed to move in the first direction by the elastic force of the spring 33.
  • the linear transmission assembly 21 continues to drive the rotary drive nut 22 to move in the first direction, so that the rotary screw 321 rotates relative to the rotary drive nut 22, and drives the rotary shaft 322 to rotate along the axis of the rotary screw 321 .
  • the present invention also provides a lens assembly 200, which includes a camera lens module 5 and the lens transmission device 100 of the present invention.
  • Group 5 includes a lens 51 for photography; in actual use, the lens assembly 200 is installed inside an external mobile terminal. When not in use, the lens module 5 of the lens assembly 200 is always housed inside the mobile terminal.
  • the lens transmission device 100 drives the camera lens module 5 to extend out of the mobile terminal, so that the lens 51 is exposed.
  • the lens transmission device 100 drives the camera lens module 5 to retract and move The interior of the terminal.
  • the limiting mechanism 6 is shown in FIGS. 8-11.
  • the limiting mechanism 6 is a part of the mobile terminal. During the use of the lens assembly, the limiting mechanism 6 is used to The sleeve 31 is restricted.
  • Figure 8 shows the initial state of the lens assembly of the present invention.
  • the entire lens assembly is located inside the mobile terminal.
  • the sliding drive nut 212 is located at one end of the sliding screw rod close to the drive assembly.
  • the screw thread is connected to the end of the rotating screw 321, and the rotating screw 321 is completely located outside the first receiving space 20.
  • FIG. 9 shows the extended state of the lens assembly of the present invention.
  • the motor rotates through the reducer to drive the sliding screw to rotate.
  • the sliding screw and the sliding drive nut 212 produce relative rotation, so that the sliding drive nut 212 moves along the first direction (ie, the X-axis direction).
  • the first sleeve 211 compresses the spring 33 and pushes the second sleeve 211 through the elastic force of the spring 33.
  • the transmission assembly 3 moves in the first direction as a whole, so as to extend the camera lens module 5 in the first direction until the second transmission assembly 3 moves to the limit position in the first direction, that is, when the second sleeve 31 abuts
  • the second transmission assembly 3 stops moving in the first direction, and the camera lens module 5 is fully extended. It should be noted that during the extension process, there is no relative rotation between the rotating drive nut 22 and the rotating screw 321. Therefore, the rotating assembly 32 does not rotate, and the rotating screw 321 is still completely outside the first receiving space 20.
  • FIG. 10 shows a state of the lens assembly of the present invention rotated by 180°.
  • the state of the lens assembly rotated by 180° is regarded as the proactive state of the mobile terminal, that is, after the camera lens module is fully extended, the second sleeve 31 is restricted and passes
  • the sliding drive nut 212 and the first sleeve 211 continue to drive the rotary drive nut 22 to move in the first direction, so that the rotary screw 321 and the rotary drive nut 22 rotate relative to each other, and drive the rotary shaft 322 to rotate 180° along the axis of the rotary screw 321 , That is, drive the camera lens module 5 to rotate 180° along the axis of the rotating screw 321; it should be noted that the spring 33 is compressed and elastically deformed, and the rotating screw 321 partially extends into the first receiving space 20.
  • FIG. 11 shows the 360° state of the lens assembly of the present invention.
  • the 360° state of the lens assembly is used as the back-shooting state of the mobile terminal.
  • the second sleeve 31 is restricted and passes through a straight line.
  • the transmission assembly continues to drive the rotating drive nut 22 to move in the first direction, so that the rotating screw 321 and the rotating drive nut 22 rotate relative to each other, and drive the rotating shaft 322 to rotate 360° along the axis of the rotating screw 321, that is, drive the camera lens module 5 It rotates 360° along the axis of the rotating screw 321; it should be noted that the spring 33 is compressed to the maximum amount of elastic deformation, and the rotating screw 321 mostly extends into the first receiving space 20.
  • the lead of the sliding drive nut on the sliding screw can be controlled to control the extension distance of the camera lens module and the rotation angle of the camera lens module after it is extended, which is controlled by software
  • the extension distance, rotation speed, rotation start and end positions of the camera lens module can make the lens of the camera lens module stay at any angle position.
  • the transmission relationship between the drive assembly and the first transmission assembly is not limited to the sliding screw transmission of the screw and nut. It can be specifically set according to the actual design needs, as long as it can be achieved through
  • the drive assembly drives the first drive assembly to move linearly in the first direction; for example, as another embodiment, the drive assembly includes an air cylinder, and the linear drive assembly includes a first sleeve connected to the output end of the air cylinder to rotate and drive The nut is fixed on the end of the first sleeve away from the cylinder, and the second sleeve is sleeved on the end of the first sleeve away from the cylinder and forms a sliding connection. It is also feasible to directly control the reciprocating movement of the first sleeve in the first direction through the cylinder. .
  • the driving assembly drives the linear transmission assembly to move linearly in a first direction parallel to the axial direction of the rotating screw, and the interaction between the linear transmission assembly and the spring pushes the second transmission assembly along Move in the first direction.
  • the linear transmission component drives the rotary drive nut to move in the first direction so that the rotary screw and the rotary drive nut rotate relative to each other, and drive the rotary shaft along the The axis of the rotating screw rotates;
  • the second transmission assembly is slidably connected to the first transmission assembly so that the two together form a single-bar structure, and a single drive assembly is arranged in conjunction with the horizontal-bar structure to realize the lens transmission device along the first
  • the lifting movement in one direction and the rotation movement around the first direction that is, a variety of motion control can be realized by one drive assembly.
  • This structure effectively reduces the space occupied by the drive assembly, and at the same time makes the transmission structure simpler, which is beneficial to The ultra-thin design of the mobile terminal improves the practicability.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

本发明提供一种镜头传动装置，其包括驱动组件、第一传动组件和第二传动组件；第一传动组件包括直线传动组件和旋转驱动螺母；第二传动组件包括第二套筒、旋转组件以及弹簧；旋转组件包括旋转螺杆以及连接于旋转螺杆的旋转轴；驱动组件驱动直线传动组件沿第一方向直线移动，并通过直线传动组件与弹簧的相互作用推动第二传动组件沿第一方向移动，当第二传动组件沿第一方向移动至限位位置时，直线传动组件带动旋转驱动螺母沿第一方向移动，以使旋转螺杆与旋转驱动螺母产生相对转动，并带动旋转轴沿旋转螺杆的轴线旋转。与相关技术相比，本发明的镜头传动装置的结构简单、占用空间小、实用性强。

Description

镜头传动装置及镜头组件 技术领域
本发明涉及电子设备领域，尤其涉及一种运用于便携式电子产品的镜头传动装置及镜头组件。
 背景技术
随着移动终端产品的不断发展，对屏幕的屏占比的要求也越来越高，尤其在采用全面屏的方案当中，该方案要求在屏幕一侧不能设置其他元器件，因此，为了避免摄像镜头设置在屏幕一侧，需采用弹出式摄像头方案以满足全面屏设计的需求。
相关技术的镜头组件中，镜头组件包括镜头模组以及用于控制所述镜头模组升降或旋转的镜头传动装置，所述镜头传动装置包括用于控制所述镜头模组升降弹出的第一电机以及用于控制所述镜头模组弹出后实现旋转的第二电机。
 技术问题
然而，相关技术中，通过两个独立的电机以分别实现镜头模组的升降弹出和旋转功能，使得镜头传动装置的传动结构复杂，另外，多个电机的结构设置，所占用的空间过大，不利于移动终端的超薄化设计，其实用性低。
因此，实有必要提供一种新的镜头传动装置及镜头组件解决上述技术问题。
 技术解决方案
本发明的目的在于提供一种镜头传动装置及镜头组件，以解决传动结构复杂、占用空间大、实用性低等问题。
为了达到上述目的，本发明提供一种镜头传动装置，其包括：
驱动组件，所述驱动组件用于提供驱动力；
第一传动组件，所述第一传动组件包括连接于所述驱动组件输出端的直线传动组件以及固定于所述直线传动组件远离所述驱动组件一端的旋转驱动螺母；
第二传动组件，所述第二传动组件包括第二套筒、旋转组件以及弹簧，所述第二套筒套设于所述直线传动组件远离所述驱动组件一端并形成滑动连接；所述旋转组件包括收容于所述第二套筒内且与所述旋转驱动螺母形成螺纹连接的旋转螺杆以及位于所述第二套筒外且连接于所述旋转螺杆远离所述驱动组件一端的旋转轴；所述弹簧收容于所述第二套筒内并间隔套设于所述旋转螺杆，所述弹簧的一端固定于所述第二套筒远离所述驱动组件一端，所述弹簧的另一端固定于所述直线传动组件；所述旋转轴与外部的摄像镜头连接；
所述驱动组件驱动所述直线传动组件沿平行于所述旋转螺杆轴向的第一方向直线移动，并通过所述直线传动组件与所述弹簧的相互作用推动所述第二传动组件沿所述第一方向移动，当所述第二传动组件沿所述第一方向移动至限位位置时，所述直线传动组件带动所述旋转驱动螺母沿所述第一方向移动以使所述旋转螺杆相对于所述旋转驱动螺母产生相对转动，并带动所述旋转轴绕所述旋转螺杆的轴向旋转。
优选的，所述驱动组件包括电机和连接于所述电机的输出端的滑动螺杆；所述直线传动组件包括间隔套设于所述滑动螺杆的第一套筒以及与所述滑动螺杆形成螺纹传动连接的滑动驱动螺母，所述滑动驱动螺母固定于所述第一套筒靠近所述驱动组件的一端并部分伸入所述第一套筒内，所述第二套筒套设于所述第一套筒远离所述驱动组件的一端并形成滑动连接。
优选的，所述镜头传动装置还包括用于支撑所述滑动螺杆的轴承支撑座，所述轴承支撑座包括支撑板、分别由所述支撑板沿所述第一方向相对两端凸出延伸的延伸壁以及固定装设于所述延伸壁的轴承，所述滑动螺杆通过所述轴承固定于所述延伸壁，所述镜头传动装置通过所述支撑板固定于外部的移动终端。
优选的，所述第一套筒上设有贯穿其上的避让开口，所述延伸壁穿过所述避让开口延伸至所述第一套筒内，所述避让开口沿所述第一方向延伸至所述第一套筒靠近所述驱动组件的端面。
优选的，所述第二套筒设有贯穿其上的限位槽，所述限位槽沿所述第二套筒的轴向延伸，所述第一套筒沿垂直所述第一方向凸出设有第一限位柱，所述第一限位柱穿设于所述限位槽内。
优选的，所述旋转驱动螺母固定于所述第一套筒远离所述驱动组件的一端，所述第一套筒包括朝向所述滑动螺杆的内表面，所述内表面朝向所述滑动螺杆凸起延伸形成固定壁，所述固定壁围设形成限位孔，所述旋转驱动螺母收容于所述限位孔内并固定于所述固定壁。
优选的，所述弹簧的一端固定于所述第二套筒、另一端固定于所述第一套筒远离所述驱动组件的端面。
优选的，所述驱动组件还包括与所述电机的输出端连接的减速器，所述滑动螺杆连接于所述减速器的输出端。
优选的，所述第一套筒上固定设有第二限位柱，所述第二限位柱与所述滑动驱动螺母伸入所述第一套筒内的部分固定连接。
优选的，所述第一限位柱以及第二限位柱为限位螺钉或限位销钉。
优选的，所述驱动组件包括气缸；所述直线传动组件包括与所述气缸的输出端连接的第一套筒，所述旋转驱动螺母固定于所述第一套筒远离所述气缸的一端，所述第二套筒套设于所述第一套筒远离所述气缸的一端并形成滑动连接。
本发明提供一种镜头组件，其包括摄像镜头模组以及本发明所述的镜头传动装置，所述摄像镜头模组固定装设于所述旋转轴。
 有益效果
与相关技术相比，本发明的镜头传动装置中，驱动组件驱动直线传动组件沿平行于旋转螺杆轴向的第一方向直线移动，并通过直线传动组件与弹簧的相互作用推动第二传动组件沿第一方向移动，当第二传动组件沿第一方向移动至限位位置时，直线传动组件带动旋转驱动螺母沿第一方向移动以使旋转螺杆与旋转驱动螺母产生相对转动，并带动旋转轴沿旋转螺杆的轴线旋转；上述结构中，第二传动组件滑动连接于第一传动组件以使两者共同构成单杆结构，而通过单个的驱动组件配合该单杠结构设置，可实现镜头传动装置沿第一方向上的升降运动和绕第一方向的旋转运动，即通过一个驱动组件可实现多种的运动控制，该结构有效地减少了驱动组件所占用的空间，同时使得传动结构更加简单，有利于移动终端的超薄化设计，提高了实用性。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明镜头传动装置的立体结构示意图；
图2为本发明镜头传动装置的部分立体结构分解示意图；
图3为本发明镜头传动装置的另一部分立体结构分解示意图；
图4为本发明镜头传动装置的第一套筒的立体结构示意图；
图5为图4的截面示意图；
图6为图1中A-A线的剖视图；
图7为本发明镜头组件的立体结构示意图；
图8为本发明镜头组件初始状态的截面示意图；
图9为本发明镜头组件伸出状态的截面示意图；
图10为本发明镜头组件旋转180°状态的截面示意图；
图11为本发明镜头组件旋转360°状态的截面示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请同时参阅图1-7所示，本发明提供一种镜头传动装置100，其包括驱动组件1、第一传动组件2、第二传动组件3以及轴承支撑座4。
具体的，驱动组件1用于提供驱动力。
在本实施方式中，驱动组件1包括电机11、与电机11的输出端连接的减速器12以及连接于减速器12的输出端的滑动螺杆13，在此，设置减速器12是为了将电机11的部分转速转为扭力，由于旋转变小、扭力变大，使得滑动螺杆13转动性能更加可靠；当然，在其他的实施方式当中，不设置减速器也是可行的，当不设置减速器时，滑动螺杆直接连接至电机输出端。
第一传动组件2包括连接于驱动组件1输出端的直线传动组件21以及固定于直线传动组件21远离驱动组件1一端的旋转驱动螺母22。
进一步的，直线传动组件21包括间隔套设于滑动螺杆13的第一套筒211以及与滑动螺杆13形成螺纹传动连接的滑动驱动螺母212，滑动驱动螺母212固定于第一套筒211靠近驱动组件1的一端并部分伸入第一套筒211内，旋转驱动螺母22固定于第一套筒211远离驱动组件1的一端。
更进一步的，第一套筒211沿平行于第二传动组件3的轴向的第一方向（即X轴方向）设有贯穿其上的开口2101，开口2101位于第一套筒211靠近驱动组件1的一端，滑动驱动螺母212盖设固定于开口2101并与第一套筒211形成第一收容空间20；第一套筒211包括朝向滑动螺杆13的内表面2111，内表面2111朝向滑动螺杆13凸起延伸形成固定壁2112，固定壁2112围设形成与第一收容空间20连通的限位孔2102，旋转驱动螺母22收容于限位孔2102内并固定于固定壁2112，该设置有效地避免了旋转驱动螺母22绕第一方向的相对转动。
第二传动组件3包括第二套筒31、旋转组件32以及弹簧33。
第二套筒31套设于直线传动组件21远离驱动组件1一端并形成滑动连接，且第二套筒31具有第二收容空间30；更具体的，第二套筒31套设于第一套筒211远离驱动组件1的一端并形成滑动连接。
旋转组件32包括收容于第二套筒31的第二收容空间30内的旋转螺杆321以及位于第二套筒31外的旋转轴322，旋转螺杆321与旋转驱动螺母22形成螺纹连接，旋转轴322的一端与旋转螺杆321远离驱动组件1的一端连接、另一端用于连接外部的摄像镜头。
弹簧33收容于第二套筒31的第二收容空间30内并间隔套设于旋转螺杆321，弹簧33的一端固定于第二套筒31远离驱动组件1一端，弹簧33的另一端固定于直线传动组件21，具体的，弹簧33的另一端固定于第一套筒211远离驱动组件1的端面上。其中，将旋转螺杆321的轴向定义为第二传动组件3的轴向，则第一方向平行于旋转螺杆321的轴向。
更优的，为了避免第一套筒211与第二套筒31之间的相对转动，第二套筒31沿垂直第一方向设有贯穿其上的限位槽310，限位槽310沿第二套筒31的轴向延伸，第一套筒211沿垂直第一方向凸出延伸形成第一限位柱2113，第一限位柱2113穿设于限位槽310内；为了避免第一套筒211与滑动驱动螺母212之间的相对转动，第一套筒211还固定设有第二限位柱2114，第二限位柱2114与滑动驱动螺母212伸入第一套筒211内的部分固定连接；在此，需要说明的是，第一限位柱2113和第二限位柱2114均为限位螺钉或限位销钉。
轴承支撑座4用于支撑滑动螺杆13。
在本实施方式中，轴承支撑座4包括支撑板41、分别由支撑板41沿第一方向的相对两端凸出延伸的两个延伸壁42以及分别固定装设于两个延伸壁42的两个轴承43；第一套筒211设有沿垂直第一方向贯穿其上的避让开口2103，该避让开口2103沿第一方向自固定壁2112靠近收容空间20的端面延伸至第一套筒211靠近驱动组件1的端面，延伸壁42部分穿过避让开口2103延伸至第一套筒211内，滑动螺杆13的相对两端分别通过两个轴承43固定支撑于两个延伸壁42，镜头传动装置100通过支撑板41固定于外部的移动终端。
上述结构中，驱动组件1用于驱动直线传动组件21沿第一方向直线移动，并通过弹簧33的弹力作用推动第二传动组件3沿第一方向移动，当第二传动组件3沿第一方向移动至限位位置时，直线传动组件21继续带动旋转驱动螺母22沿第一方向移动，以使旋转螺杆321相对于旋转驱动螺母22产生相对转动，并带动旋转轴322沿旋转螺杆321的轴线旋转。
本发明还提供一种镜头组件200，其包括摄像镜头模组5以及本发明的镜头传动装置100，摄像镜头模组5固定装设于旋转轴322远离第一传动组件2一端，且摄像镜头模组5包括用于摄影的镜头51；在实际使用中，镜头组件200装设于外部的移动终端的内部，在未使用时，镜头组件200的镜头模组5始终收容于移动终端的内部，当需要使用镜头51进行拍摄时，镜头传动装置100驱动摄像镜头模组5伸出至移动终端外，以使得镜头51外露，当停止使用时，镜头传动装置100又驱动摄像镜头模组5缩回移动终端的内部。
为了方便理解镜头传动装置的传动原理，下面将结合图8-11所示展开说明：
首先，需要说明的是，图8-11中均示出了限位机构6，该限位机构6为移动终端的一部分，在镜头组件使用的过程中，该限位机构6用于对第二套筒31进行限位。
图8示出本发明镜头组件的初始状态，整个镜头组件位于移动终端的内部，滑动驱动螺母212位于滑动螺杆靠近驱动组件一端，第二套筒31与限位机构6间隔设置，旋转驱动螺母22螺纹连接于旋转螺杆321的末端，旋转螺杆321完全位于第一收容空间20外。
图9示出本发明镜头组件伸出状态，电机通过减速器转动以带动滑动螺杆转动，滑动螺杆与滑动驱动螺母212之间产生相对转动，使得滑动驱动螺母212沿第一方向（即X轴方向）作直线移动，同时滑动驱动螺母212带动第一套筒211和旋转驱动螺母22沿第一方向移动，在移动过程中，第一套筒211压缩弹簧33，通过弹簧33的弹力作用推动第二传动组件3整体沿第一方向移动，从而实现沿第一方向将摄像镜头模组5伸出，直至第二传动组件3沿第一方向移动至限位位置时，即当第二套筒31抵接于限位机构6被限位时，第二传动组件3停止沿第一方向移动，摄像镜头模组5被完全伸出。需要说明的是，在伸出过程中，旋转驱动螺母22与旋转螺杆321之间不存在相对转动，因此，旋转组件32未发生旋转，旋转螺杆321依然完全位于第一收容空间20外。
图10示出本发明镜头组件旋转180°状态，该镜头组件旋转180°状态作为移动终端的前摄状态，即在摄像镜头模组被完全伸出后，第二套筒31被限位，通过滑动驱动螺母212和第一套筒211继续带动旋转驱动螺母22沿第一方向移动，以使旋转螺杆321与旋转驱动螺母22产生相对转动，并带动旋转轴322沿旋转螺杆321的轴线旋转180°，即带动摄像镜头模组5沿旋转螺杆321的轴线旋转180°；需要说明的是，弹簧33被压缩并产生弹性形变，旋转螺杆321部分延伸至第一收容空间20内。
图11示出本发明镜头组件旋转360°状态，该镜头组件旋转360°状态作为移动终端的后摄状态，在摄像镜头模组被完全伸出后，第二套筒31被限位，通过直线传动组件继续带动旋转驱动螺母22沿第一方向移动，以使旋转螺杆321与旋转驱动螺母22产生相对转动，并带动旋转轴322沿旋转螺杆321的轴线旋转360°，即带动摄像镜头模组5沿旋转螺杆321的轴线旋转360°；需要说明的是，弹簧33被压缩到最大弹性变形量，旋转螺杆321大部分延伸至第一收容空间20内。
综上可知，在实际使用中，可以通过对滑动驱动螺母在滑动螺杆上的导程控制，以控制摄像镜头模组的伸出距离以及摄像镜头模组伸出后的旋转角度，为通过软件控制摄像镜头模组的伸出距离、旋转速度、旋转起止位置等，可使摄像镜头模组的镜头在任意角度位置停留。
需要说明的是，在本实施方式中，驱动组件和第一传动组件之间的传动关系不限于此螺杆和螺母的滑动螺旋传动，其可以根据实际设计的需要进行具体的设置，只要能够实现通过驱动组件驱动第一传动组件沿第一方向作直线运动的目的即可；比如，作为其他的实施方式，驱动组件包括气缸，直线传动组件包括与气缸的输出端连接的第一套筒，旋转驱动螺母固定于第一套筒远离气缸的一端，第二套筒套设于第一套筒远离气缸的一端并形成滑动连接，通过气缸直接控制第一套筒沿第一方向的往复运动也是可行的。
与相关技术相比，本发明的镜头传动装置中，驱动组件驱动直线传动组件沿平行于旋转螺杆轴向的第一方向直线移动，并通过直线传动组件与弹簧的相互作用推动第二传动组件沿第一方向移动，当第二传动组件沿第一方向移动至限位位置时，直线传动组件带动旋转驱动螺母沿第一方向移动以使旋转螺杆与旋转驱动螺母产生相对转动，并带动旋转轴沿旋转螺杆的轴线旋转；上述结构中，第二传动组件滑动连接于第一传动组件以使两者共同构成单杆结构，而通过单个的驱动组件配合该单杠结构设置，可实现镜头传动装置沿第一方向上的升降运动和绕第一方向的旋转运动，即通过一个驱动组件可实现多种的运动控制，该结构有效地减少了驱动组件所占用的空间，同时使得传动结构更加简单，有利于移动终端的超薄化设计，提高了实用性。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (12)

  1. 一种镜头传动装置，其特征在于，其包括：
    驱动组件，所述驱动组件用于提供驱动力；
    第一传动组件，所述第一传动组件包括连接于所述驱动组件输出端的直线传动组件以及固定于所述直线传动组件远离所述驱动组件一端的旋转驱动螺母；
    第二传动组件，所述第二传动组件包括第二套筒、旋转组件以及弹簧，所述第二套筒套设于所述直线传动组件远离所述驱动组件一端并形成滑动连接；所述旋转组件包括收容于所述第二套筒内且与所述旋转驱动螺母形成螺纹连接的旋转螺杆以及位于所述第二套筒外且连接于所述旋转螺杆远离所述驱动组件一端的旋转轴；所述弹簧收容于所述第二套筒内并间隔套设于所述旋转螺杆，所述弹簧的一端固定于所述第二套筒远离所述驱动组件一端，所述弹簧的另一端固定于所述直线传动组件；所述旋转轴与外部的摄像镜头连接；
    所述驱动组件驱动所述直线传动组件沿平行于所述旋转螺杆轴向的第一方向直线移动，并通过所述直线传动组件与所述弹簧的相互作用推动所述第二传动组件沿所述第一方向移动，当所述第二传动组件沿所述第一方向移动至限位位置时，所述直线传动组件带动所述旋转驱动螺母沿所述第一方向移动以使所述旋转螺杆相对于所述旋转驱动螺母产生相对转动，并带动所述旋转轴绕所述旋转螺杆的轴向旋转。
  2. 根据权利要求1所述的镜头传动装置，其特征在于，所述驱动组件包括电机和连接于所述电机的输出端的滑动螺杆；所述直线传动组件包括间隔套设于所述滑动螺杆的第一套筒以及与所述滑动螺杆形成螺纹传动连接的滑动驱动螺母，所述滑动驱动螺母固定于所述第一套筒靠近所述驱动组件的一端并部分伸入所述第一套筒内，所述第二套筒套设于所述第一套筒远离所述驱动组件的一端并形成滑动连接。
  3. 根据权利要求2所述的镜头传动装置，其特征在于，所述镜头传动装置还包括用于支撑所述滑动螺杆的轴承支撑座，所述轴承支撑座包括支撑板、分别由所述支撑板沿所述第一方向相对两端凸出延伸的延伸壁以及固定装设于所述延伸壁的轴承，所述滑动螺杆通过所述轴承固定于所述延伸壁，所述镜头传动装置通过所述支撑板固定于外部的移动终端。
  4. 根据权利要求3所述的镜头传动装置，其特征在于，所述第一套筒上设有贯穿其上的避让开口，所述延伸壁穿过所述避让开口延伸至所述第一套筒内，所述避让开口沿所述第一方向延伸至所述第一套筒靠近所述驱动组件的端面。
  5. 根据权利要求2所述的镜头传动装置，其特征在于，所述第二套筒设有贯穿其上的限位槽，所述限位槽沿所述第二套筒的轴向延伸，所述第一套筒沿垂直所述第一方向凸出设有第一限位柱，所述第一限位柱穿设于所述限位槽内。
  6. 根据权利要求2所述的镜头传动装置，其特征在于，所述旋转驱动螺母固定于所述第一套筒远离所述驱动组件的一端，所述第一套筒包括朝向所述滑动螺杆的内表面，所述内表面朝向所述滑动螺杆凸起延伸形成固定壁，所述固定壁围设形成限位孔，所述旋转驱动螺母收容于所述限位孔内并固定于所述固定壁。
  7. 根据权利要求2所述的镜头传动装置，其特征在于，所述弹簧的一端固定于所述第二套筒、另一端固定于所述第一套筒远离所述驱动组件的端面。
  8. 根据权利要求2所述的镜头传动装置，其特征在于，所述驱动组件还包括与所述电机的输出端连接的减速器，所述滑动螺杆连接于所述减速器的输出端。
  9. 根据权利要求5所述的镜头传动装置，其特征在于，所述第一套筒上固定设有第二限位柱，所述第二限位柱与所述滑动驱动螺母伸入所述第一套筒内的部分固定连接。
  10. 根据权利要求9所述的镜头传动装置，其特征在于，所述第一限位柱以及第二限位柱为限位螺钉或限位销钉。
  11. 根据权利要求1所述的镜头传动装置，其特征在于，所述驱动组件包括气缸；所述直线传动组件包括与所述气缸的输出端连接的第一套筒，所述旋转驱动螺母固定于所述第一套筒远离所述气缸的一端，所述第二套筒套设于所述第一套筒远离所述气缸的一端并形成滑动连接。
  12. 一种镜头组件，其包括摄像镜头模组，其特征在于，所述镜头组件包括权利要求1-11任一项所述的镜头传动装置，所述摄像镜头模组固定装设于所述旋转轴。
PCT/CN2020/090158 2020-04-16 2020-05-14 镜头传动装置及镜头组件 WO2021208173A1 (zh)

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