Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Drive regulation structure of piezoelectric actuator and lens drive equipped with the same

A technology of piezoelectric actuator and structure, which is applied in the focus device of camera, focus device of projector, piezoelectric device/electrostrictive device, etc., and can solve the problems of damage and pull-out of abutting parts

Inactive Publication Date: 2009-07-22
ALPS ALPINE CO LTD
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the contact member is damaged, or the rotating shaft bites into the contact member and cannot be pulled out from the stopped state.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Drive regulation structure of piezoelectric actuator and lens drive equipped with the same
  • Drive regulation structure of piezoelectric actuator and lens drive equipped with the same
  • Drive regulation structure of piezoelectric actuator and lens drive equipped with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0028] figure 1 It is an exploded perspective view of a lens driving device to which a driving restriction structure of a piezoelectric actuator according to an embodiment of the present invention is applied; figure 2 is assembled figure 1 A perspective view of the appearance of the case of the lens driving device shown.

[0029] Such as figure 1 As shown, the lens driving device 1 of this embodiment includes: a substrate 3 on which an image sensor 2 is mounted; a base 5 on which an IR cut filter 4 is mounted; a housing on which a lens holder 6 and a motor 7 as a piezoelectric actuator are mounted. 8; the shielding case 9 for housing the housing 8 .

[0030] Substrate 3 in from figure 1 The shown upper side is assumed to be a square when viewed from the upper side. Image sensor 2 is running from figure 1 The shown upper side is viewed as a rectangle,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a drive regulation structure of a piezoelectric actuator for efficiently regulating parallel translation of the rotating shaft of the piezoelectric actuator without causing any damage on the peripheral member or abrasion thereof. The drive regulation structure of a piezoelectric actuator for rotating the rotating shaft by controlling application of a voltage to a piezoelectric element and translating the rotating shaft to the axial direction is characterized by comprising a stopper (7c) projecting in the direction intersecting the axial direction of a rotating shaft (7b) perpendicularly and rotating integrally with the rotating shaft (7b), and regulation pieces (16a, 16b) abutting against the stopper (7c) when the rotating shaft (7b) translates up to a predetermined position and regulating rotation of the rotating shaft (7b).

Description

technical field [0001] The present invention relates to a drive limiting structure of a piezoelectric actuator and a lens driving device having the structure, and more particularly to a piezoelectric actuator that rotates a rotating shaft by controlling the voltage applied to the piezoelectric element and moves parallel to the axial direction. A drive limiting structure of an actuator and a lens driving device having the structure. Background technique [0002] Currently, piezoelectric actuators are widely used in the precision control of semiconductor manufacturing and industrial equipment. In recent years, applications to digital cameras and camera mobile phones have rapidly expanded, and they are used in various fields such as hand-shake correction functions of digital cameras and drive control of lenses for autofocus, for example. [0003] As such a piezoelectric actuator, there is provided a piezoelectric actuator including a rotating shaft having threaded threads form...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00H01L41/09
CPCG02B7/102H02N2/043H02N2/0095G02B7/04G03B13/34G03B3/10G03B2205/0061
Inventor 石黑克之龟山泰明
Owner ALPS ALPINE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com