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Lens driving stepping motor, lens driving method, lens driving device, and image pickup apparatus

A stepping motor and lens driving technology, applied in the field of photography, can solve the problems of low installation efficiency and low efficiency, and achieve the effects of easy disassembly, expansion of application scope, and improvement of assembly production efficiency.

Active Publication Date: 2022-05-03
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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  • Lens driving stepping motor, lens driving method, lens driving device, and image pickup apparatus
  • Lens driving stepping motor, lens driving method, lens driving device, and image pickup apparatus
  • Lens driving stepping motor, lens driving method, lens driving device, and image pickup apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as Figure 1-Figure 4 As shown, the stepper motor for driving the lens includes a stepper motor body 1, and the stepper motor body 1 includes a casing, a stator disposed 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 stable power output, a U-shaped screw support 2 is provided at the axial end of the stepping motor body 1. The screw support 2 is formed by stamping and bending of a sheet metal plate, which has good consistency and high structural strength. At the same time, mass production is also possible.

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

[0051] For example, the screw ...

Embodiment 2

[0083] Such as 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 method for assembling includes the following steps:

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

[0085] S2. Direct the U-shaped notch of the U-shaped shrapnel holder 5 toward one end of the screw support 2, and then make the first radially outward protrusion 40 on the U-shaped shrapnel holder 5 snap into the limiting groove 5a to realize the orientation of the through-hole bearing Install, and make the first radially outward convex portion 40 and the second radially outwardly convex portion 42 conform to the corresponding surface of one end of the U-shaped elastic frame 5, and the lateral elastic anti-off buckle 52 provided on the U-shaped elastic frame 5 Then it is stuck on the side groove wall 20...

Embodiment 3

[0091] Such as Figure 11 As shown, this embodiment provides a lens driving device, which has the stepping motor for driving the lens of Embodiment 1 or Embodiment 2. For example, the stepper motor for driving the lens uses the driving screw and the wire wheel to drive the anti-shake of the moving frame of the lens. Of course, it can further combine the rack and the gear to realize the focusing of the moving frame of the lens.

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Abstract

The invention belongs to the technical field of camera shooting, and particularly relates to a stepping motor and method for lens driving, a lens driving device and camera shooting equipment. The defects of low assembly efficiency and the like in the prior art are overcome. The stepping motor for driving the lens comprises a stepping motor body, a U-shaped lead screw bracket connected to one axial end of the stepping motor body, and a driving lead screw connected to the stepping motor body and rotationally connected with the lead screw bracket, one end of the driving screw rod penetrates through the screw rod bracket and extends into the through hole bearing, one end of the screw rod bracket, which is provided with the through hole bearing, is sleeved with a U-shaped elastic sheet frame, the U-shaped elastic sheet frame is connected with the screw rod bracket through a buckle anti-falling structure, and a bearing circumferential anti-rotation limiting structure is arranged between the U-shaped elastic sheet frame and the through hole bearing. The method has the advantages that the assembling efficiency is improved, and the final driving precision is ensured.

Description

technical field [0001] 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. 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 driving efficiency of the above methods is low and the thrust is relatively small. For this reason, the inventor has designed the mode that utilizes micro-stepper motor to drive, and its thrust force is big and efficient in this mode. [0003] When the stepper motor is driven, the power of the stepper motor is transmitted through the screw rod. In the traditional stepper motor, both ends of the screw rod are directly fixed in the axial direction. Some inventors have also designed the use of one end of the shrapnel to the corresponding screw rod. The ends are elastically supported. For example, the bearings are used to...

Claims

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Application Information

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