Unlock instant, AI-driven research and patent intelligence for your innovation.

Mechanical iris device driven by shape memory alloy wire

A technology of memory alloy wire and iris, applied in the direction of mechanical power generation mechanism, mechanical equipment, machine/engine, etc., can solve the problems of complex structure, low control reliability, heavy weight, etc., and achieve the effect of avoiding complex structure

Active Publication Date: 2020-02-28
NORTHWESTERN POLYTECHNICAL UNIV
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of complex structure, relatively large weight and low control reliability existing in existing iris mechanisms that need to be driven by motors, the present invention proposes a mechanical iris device driven by shape memory alloy wires. The driving device constituted can output a long-stroke driving force, and use the driving force to drive the iris mechanism to rotate to realize the opening and closing function of the iris

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
  • Mechanical iris device driven by shape memory alloy wire
  • Mechanical iris device driven by shape memory alloy wire
  • Mechanical iris device driven by shape memory alloy wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The object of the present invention is to provide a mechanical iris device driven by a shape memory alloy wire. The shape memory alloy wire is used as a driving source to output a long-stroke driving force. The driving force drives the iris mechanism to rotate to realize the opening and closing function of the iris.

[0032] The mechanical iris device includes the following features:

[0033] Feature 1: The mechanical iris device driven by a shape memory alloy wire includes an iris mechanism module and a shape memory alloy wire drive module.

[0034] Feature 2: The iris mechanism module includes a blade, an outer shell, and an inner shell. The outer shell is fixed on the device that needs the protection of the iris mechanism, and the blades are opened and closed through the relative rotation of the inner shell and the outer shell.

[0035] Feature 3: The drive module includes a shape memory alloy drive plate. The drive board is composed of a curved PCB board and a sha...

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 mechanical iris device driven by a shape memory alloy wire. The mechanical iris device driven by the shape memory alloy wire comprises an iris mechanism module and a drive module, wherein the drive module comprises a shape memory alloy drive plate; the shape memory alloy drive plate comprises an arc-shaped printed board, a shape memory alloy wire shrunk by heating and an arc-shaped sliding plate. According to the invention, the mechanical iris device is driven by adopting the shape memory alloy wire to realize the opening and closing functions of blades of a mechanicaliris mechanism, and the problems of complex structure, relatively large weight and low control reliability existing by using a motor driving mode are avoided. The mechanical iris device provided by the invention is suitable for various aerospace applications with high requirements on weight and reliability.

Description

technical field [0001] The invention relates to a mechanical iris device, in particular to a mechanical iris device driven by a shape memory alloy wire. Background technique [0002] There are two types of iris mechanisms: 2D (plane) and 3D (spherical). The most common application of the planar iris mechanism is the camera aperture. This aperture is composed of multiple overlapping arc-shaped thin metal blades. The size of the central circular aperture is changed by the clutch of the blades. From 18 to 18, the more blades, the closer the aperture is to a circle. The spherical iris mechanism means that the blades are on a spherical surface, and the blades stretch out to form a spherical surface. The spherical iris has many potential applications, such as being used as a hidden mechanism of an airborne detection device, an opening and closing mechanism of a missile tail nozzle, and so on. [0003] The opening and closing of the iris mechanism is usually achieved by changing...

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): F03G7/06
CPCF03G7/065
Inventor 张亚辉王文龙谷小军朱继宏张卫红王骏
Owner NORTHWESTERN POLYTECHNICAL UNIV