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

Driving device

A technology for driving devices and moving parts, applied in focusing devices, electromechanical devices, installation, etc., can solve problems such as the limitation of contact rod material selection, achieve the effect of avoiding alignment problems and simplifying the assembly process

Inactive Publication Date: 2013-06-26
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The structure in which the magnets are arranged at both ends of the optical axis path of the optical lens group (that is, the up-and-down attraction method) will inevitably increase the height of the drive device; in addition, since there must be a force between the contact rod and the magnet, the contact rod must be selected to be compatible with the magnet. Materials to which magnets attract each other, e.g. metals or magnetic materials, limiting the choice of contact rod materials

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 device
  • Driving device
  • Driving device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] see figure 1 , figure 2 and image 3 As shown, the driving device 100 provided by the embodiment of the present invention is used to drive the movement of the lens module (not shown) to realize the focusing operation. A piezoelectric unit 15 , a magnet 16 , a magnetic sheet 17 , a circuit board 18 , a holder 19 and a contact rod 20 .

[0015] The circuit board 18 is used to provide electrical energy to the piezoelectric unit 15 to make it work. When the circuit board 18 provides voltage to the piezoelectric unit 15, the piezoelectric unit 15 has mechanical deformation, and voltages in different directions have mechanical deformations in different directions, and different Different magnitudes of voltage have different magnitudes of mechanical deformation. The circuit board 18 may be a general printed circuit board or a flexible circuit board (FPCB).

[0016] The fixing frame 11 has a square structure with a first receiving space 110 for receiving the movable elemen...

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 driving device is used for driving a lens module to move. The driving device comprises a fixing support, a movable piece, a magnet, a magnetic plate, a supporting body, a guiding rod, a contact rod and a piezoelectric unit. The fixing support is provided with an accommodating space and an opening. The movable piece is arranged in the accommodating space and provided with a through hole. The magnet is fixed on the fixing support. The magnetic plate is fixed on the movable piece, and acting force between the magnet and the magnetic plate can fix the movable piece on a preset position in the fixing support. The supporting body is matched with the fixing support and used for accommodating the movable piece. The guiding rod penetrates through the through hole of the movable piece, and two ends of the guiding rod are fixed on the fixing support and the supporting body respectively. The contact rod is fixed on the movable piece. The piezoelectric unit is fixed in the opening, butts against the contact rod and is used for deforming to generate friction between the piezoelectric unit and the contact rod to drive the movable piece to move in the accommodating space along the guiding rod.

Description

technical field [0001] The invention relates to a driving device, in particular to a driving device using a piezoelectric unit. Background technique [0002] A digital camera or a mobile phone with a shooting function is equipped with at least one lens module, and the function of the lens module is to drive the optical lens or the optical lens group to move along the optical axis to achieve auto-focus and / or zoom functions. [0003] One of the moving methods of the optical lens group is a piezoelectric motor, which has a piezoelectric unit and a contact rod in contact with the piezoelectric unit. , the movable part can be fixed without moving, so as to prevent damage to the lens module), and the two magnets are used to attract the contact rod fixed on the movable part to achieve this. The magnets are located on both sides of the optical axis path of the optical lens group At the end, the piezoelectric unit is located between the two magnets, the piezoelectric unit is deform...

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
IPC IPC(8): G02B7/09G03B13/36H02K33/18
Inventor 吴松青
Owner HONG FU JIN PRECISION IND (SHENZHEN) 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