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Stepping motor for driving lens, method, lens driving device, and imaging device

A technology driven by stepping motors and lenses, applied in the field of photography, can solve the problems of low installation efficiency and low efficiency, and achieve the effects of easy disassembly, expanded application range, and easy maintenance

Active Publication Date: 2022-06-21
NEW SHICOH MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, for the installation of the bearing at the end of the screw rod away from the stepping motor, it needs to use fixing methods such as screws, etc., and the installation efficiency is low
[0005] Secondly, for the installation and fixing of the shrapnel, it also has problems such as low efficiency

Method used

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  • Stepping motor for driving lens, method, lens driving device, and imaging device
  • Stepping motor for driving lens, method, lens driving device, and imaging device
  • Stepping motor for driving lens, method, lens driving device, and imaging device

Examples

Experimental program
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Effect test

Embodiment 1

[0048] like Figure 1-Figure 4 As shown, the stepping motor for driving the lens includes a stepping motor body 1, and the stepping motor body 1 includes a casing, a stator arranged on the inner wall of the casing, and a rotor 7 located in the stator. When the stator is energized, the rotor will rotate, in order to achieve the purpose of power output.

[0049] In order to facilitate the stable output of power, a U-shaped lead screw bracket 2 is provided at the axial end of the stepping motor body 1. The lead screw bracket 2 is formed by stamping and bending a sheet metal plate, with good consistency and high structural strength. At the same time, mass production is also possible.

[0050] The lens driving stepping motor further includes a driving screw 3 connected to the stepping motor body 1 and rotatably connected to the screw bracket 2 . The driving screw 3 can output the power of the rotor to achieve the final purpose of focusing or anti-shake.

[0051] For example, the...

Embodiment 2

[0083] like Figure 1-Figure 8 As shown, this embodiment provides a method for assembling a stepping motor for driving a lens, which is used to assemble the stepping motor for driving a lens in Embodiment 1. The assembling method includes the following steps:

[0084] S1. Install the through-hole bearing 4 in the bearing through-hole at one end of the screw bracket 2;

[0085] S2. Move the U-shaped notch of the U-shaped shrapnel frame 5 toward one end of the screw bracket 2, and then make the first radially outward convex portion 40 on the U-shaped shrapnel frame 5 snap into the limiting groove 5a to realize the orientation of the through-hole bearing Installation, and make the first radially outer convex portion 40 and the second radially outwardly convex portion 42 obedient to the corresponding surface of one end of the U-shaped spring plate frame Then it is stuck on the side slot wall 200 of the corresponding lateral slot 20;

[0086] S3, passing the driving screw 3 throu...

Embodiment 3

[0091] like Figure 11 As shown, this embodiment provides a lens driving device, and the device has the lens driving stepping motor of the first embodiment or the second embodiment. For example, a stepper motor for lens driving uses a driving screw and a screw wheel to drive the anti-shake of the lens moving frame, and of course, it can further combine the rack and gear to realize the focusing of the lens moving frame.

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Abstract

The invention belongs to the technical field of imaging, and in particular relates to a stepping motor for lens driving, a method, a lens driving device and imaging equipment. It solves the defects of low assembly efficiency and the like in the prior art. The stepper motor for driving the lens includes a stepper motor body, and a U-shaped screw support connected to one end of the stepper motor body in the axial direction, and the stepper motor also includes a U-shaped screw bracket connected to the stepper motor body and connected to the wire The driving screw rod connected with the rod bracket is rotated. One end of the driving screw rod passes through the screw rod bracket and extends into the through-hole bearing. The end of the screw rod bracket provided with the through-hole bearing is covered with a U-shaped shrapnel frame. The U-shaped shrapnel frame and the threaded rod bracket are connected by a buckle anti-off structure, and a bearing circumferential anti-rotation limiting structure is arranged between the U-shaped shrapnel frame and the through-hole bearing. Advantages of the present application: the assembly efficiency is improved to ensure the final driving precision.

Description

technical field [0001] The invention belongs to the field of imaging technology, and in particular relates to a stepping motor for lens driving, a method, a lens driving device and imaging equipment. Background technique [0002] In the field of lens focusing or lens anti-shake, most of the existing motors are driven by coil magnets or piezoelectric drives. The above methods have low driving efficiency and relatively small thrust. For this reason, some inventors have designed a method of driving by using a micro stepping motor, which has a large thrust and high efficiency. [0003] When the stepper motor is driven, the power of the stepper motor is transmitted through the screw rod. The two ends of the screw rod of the traditional stepper motor are directly fixed axially. The ends are elastically pressed. For example, bearings are used to install and fix both ends of the screw rod, and then the elastic pieces are pressed against the corresponding end of the screw rod. The d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K37/24H02K15/00G02B7/04
CPCH02K37/24H02K15/00G02B7/04
Inventor 王可
Owner NEW SHICOH MOTOR CO LTD