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

Driving mechanism

A driving device and a driven technology, applied in installation, TV, color TV, etc., can solve the problems of resonance frequency drop, narrow range, high device cost, etc., and achieve the effect of stable drive control

Inactive Publication Date: 2009-08-26
FUJI PHOTO OPTICAL CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the cost of the device is high
In addition, according to the conditional expression shown in this document, the range that can be set as the drive frequency is relatively narrow ( Image 6 The range of Q in (B)), therefore, there is a problem that when there is an error in the quality of the device or a failure occurs, the resonance frequency drops so that the condition is deviated from, thereby being affected by the resonance

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
  • Driving mechanism
  • Driving mechanism
  • Driving mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] Next, preferred embodiments of the driving device of the present invention will be described in detail with reference to the drawings. In addition, in description of drawings, the same code|symbol is attached|subjected to the same element, and repeated description is abbreviate|omitted.

[0052] figure 1 It is a plan view showing the actuator 10 of the driving device 100 according to the first embodiment of the present invention. Such as figure 1 As shown, the actuator 10 is composed of a piezoelectric element (corresponding to an electromechanical conversion element) 12 , a drive member 14 , and a hammer member 18 . The piezoelectric elements 12 are stacked in the direction of the arrow, and deformed (expandable) in the stacking direction by application of a voltage. Accordingly, the end faces 12A and 12B in the longitudinal direction of the piezoelectric element 12 are displaced.

[0053] The proximal end of the driving member 14 is fixedly connected to one end ...

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

A drive device capable of suppressing the influence of resonance and performing accurate and stable drive control. The drive device (100) has an actuator (10), a driven part (16) frictionally coupled with the drive part (14), and a drive circuit (26) for applying an electrical signal to the electromechanical conversion element (12); The actuator (10) consists of a conversion element (12) that can be expanded and contracted by inputting an electrical signal, a drive member (14) mounted on one end of the conversion element in the direction of expansion and contraction, and the other side mounted on the conversion element (12). The hammer member (18) at the end of one side is constituted; the driving circuit (26) is in a free system with the conversion element (12) and the driving member (14) as the mass and the hammer member (18) as the spring. When the resonance frequency is set to f0 and the drive frequency of the conversion element is set to f, the conversion element (12) is driven at the drive frequency f satisfying f≥21 / 2·f0.

Description

technical field [0001] The present invention relates to a drive device, and more particularly to a drive device for driving optical components such as relatively small lenses disposed in a compact digital camera, a network camera, or a mobile phone with a camera. Background technique [0002] As a driving device for a lens such as a digital camera, an actuator using an electric device such as a piezoelectric element to convert electric elements is known. For example, as shown in the embodiments of Patent Document 2 and Patent Document 3, the actuator is composed of an electromechanical conversion element and a driving part, and generally the end face of the electromechanical conversion element in one direction of expansion and contraction is fixed to the casing (or the support member). )superior. The driving part is fixed on the end face of the electromechanical conversion element in the other direction of expansion and contraction, and the driving part is frictionally comb...

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 Patents(China)
IPC IPC(8): G02B7/02H01L41/00H04N5/225
Inventor 真锅充雄一宫武史
Owner FUJI PHOTO OPTICAL 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