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

Slender diameter piston type piezoelectric straight line motor

A linear motor and piston-type technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, piezoelectric devices/electrostrictive devices, generators/motors, etc., can solve the problem of low electromechanical energy conversion efficiency , Difficult to reduce the diameter of the driver structure, and the increase in the cost of the driver, etc., to achieve the effect of low power consumption, low cost, and stable output speed

Inactive Publication Date: 2008-04-16
SHANGHAI UNIV
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its main disadvantages are: 1) Since the piezoelectric film is arranged perpendicular to the moving direction of the mover, the diameter of the film cannot be too small, so it is difficult to further reduce the diameter of the driver structure; 2) The driver adopts a sawtooth waveform drive signal, work in a non-resonant state
Therefore, its electromechanical energy conversion efficiency is not high, and the driving circuit is more complicated, which is not good for control; 3) Due to the use of piezoelectric film, although it has the advantage of low voltage driving, it also increases the cost of the driver

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
  • Slender diameter piston type piezoelectric straight line motor
  • Slender diameter piston type piezoelectric straight line motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Referring to Fig. 1 and Fig. 2, the thin-diameter piston type piezoelectric linear motor includes a tubular stator 1 and a mover 13 placed in the tubular stator 1, and the mover 13 is composed of upper and lower layers of slender sheet-like vibrators 3, 9 and left and right End two coupling heads 6,12 are formed. The mover 13 is a left-right symmetrical structure. There are protrusions 2 symmetrically distributed above and below the mover 13 . The boss 2 is a thin elastic pin. The elongated sheet vibrator 3, 9 is composed of a narrow strip of elastic metal sheet and piezoelectric actuators 10, 5, 8, 11, 4, 7 pasted on its upper and lower surfaces. The piezoelectric actuator used here is a piezoelectric ceramic sheet uniformly coated with silver electrodes on the upper and lower sides and polarized along the thickness direction, so the piezoelectric actuator is referred to as a piezoelectric ceramic sheet hereinafter. When pasting, ensure that the polarization directi...

Embodiment 2

[0042] Referring to Fig. 3 and Fig. 4, the thin-diameter piston-type piezoelectric linear motor is basically the same as the above-mentioned embodiment. The difference is that the structure of the connecting head 6, 12 is: a whole block, in the middle of which two layers of elongated vibrator 3, 9 are processed, and the two ends maintain the original block three-dimensional rectangular body to form the connecting head 6, 12. The protrusions 2 at the upper and lower ends of the two elongated sheet vibrators 3 and 9 are thin elastic sheets.

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 relates to a thin-diameter piston-type piezoelectric linear motor, comprising a tubular stator and a mover arranged inside the tubular stator. The stator comprises an upper and lower slender strip oscillators (the coupling heads at both ends of either oscillator are connected in a permanent manner, and the upper and lower lug bosses are arranged on both ends and supported on the inner wall of the tubular stator). The invention adopts a slender structure, and can be used for two-way driving and control; the invention is characterized in a simple structure and user-friendly functions.

Description

technical field [0001] The invention relates to a miniature linear motor with both linear motion drive and control, in particular to a thin-diameter piston-type piezoelectric linear motor. Background technique [0002] With the development of electromechanical industry towards high precision, electromechanical products are rapidly miniaturized and thinned. In many fields such as information technology, semiconductor manufacturing, industrial testing, military cutting-edge equipment, biomedicine, aerospace, etc., the traditional linear motion drive method of screw plus rotary motor has become more and more difficult to meet the requirements, and there is an urgent need for hydraulic cylinders. Slim miniature linear motors are used as direct drives. However, the lateral size (perpendicular to the direction of linear motion output) of the currently developed miniature linear motors is generally too large, which limits its application in the above-mentioned fields. [0003] To...

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): H02N2/02H02N2/04H01L41/08H10N30/00
Inventor 李朝东许京荆姚华邵定国张燕燕
Owner SHANGHAI UNIV
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