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

A shape memory alloy leaf spring and a method for realizing variable stiffness

A leaf spring, memory alloy technology, applied in the direction of spring, spring/shock absorber, spring/shock absorber functional characteristics, etc., can solve the problem of limiting ride comfort and ride comfort, reducing leaf spring life, affecting ride comfort, etc. problems, to achieve the effect of improving ride comfort, saving energy, and overcoming high quality

Active Publication Date: 2017-10-20
JIANGSU UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, friction between multiple alloy spring pieces is easy to occur, which not only reduces the life of the leaf spring, but also produces certain noise, which affects the ride comfort
And for the high-speed development of the vehicle industry, the passive suspension with fixed parameters limits the improvement of ride comfort and ride comfort, so a leaf spring with variable stiffness is required

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
  • A shape memory alloy leaf spring and a method for realizing variable stiffness
  • A shape memory alloy leaf spring and a method for realizing variable stiffness
  • A shape memory alloy leaf spring and a method for realizing variable stiffness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further explained below in conjunction with the drawings:

[0022] Such as Figure 1-2 As shown, a shape memory alloy type leaf spring includes an axle 6, a spring leaf 5, a riding bolt 4, a lug 3, an electromagnet 2, an energized coil 1. The center of the spring sheet 5 is clamped and fixed on the axle 6 with a horse-riding bolt 4, and the two ends of the spring sheet are bent into curling ears 3. The material of the spring sheet 5 is a magnetron type shape memory alloy, and typical ferromagnetron type shape memory alloys include Ni-Mn-Ga, Ni-Fe-Ga, Fe-based alloys (Fe-Pd, Fe-Ni -Co-Ti, etc.) and Co-based alloys (Co-Ni, Co-Mn based alloys, etc.). Along the direction of the axle 6, a pair of electromagnets 2 are arranged equidistantly on the left and right sides of the spring sheet 5 respectively. The electromagnets 2 are wound with an energized coil 1. The electromagnet is controlled by controlling the current flowing through the energized ...

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

PropertyMeasurementUnit
bending strainaaaaaaaaaa
Login to View More

Abstract

The invention provides a shape memory alloy type steel plate spring and a method for achieving variable rigidity. The shape memory alloy type steel plate spring comprises an axle, a spring piece, a u-bolt, coiled lugs, electromagnets and a powered coil. The center of the spring piece is clamped and fixed by the u-bolt. The two tail ends of the spring piece are bent into the coiled lugs. The spring piece is made of memory alloy of a magnetic control type shape memory effect. In the direction of the axle, a pair of electromagnets is distributed on the left side and the right side of the spring piece respectively at equal distance. The powered coil is wound on the electromagnets. The intensity and direction of a magnetic field are controlled by controlling the current flowing through the powered coil. The rigidity of the steel plate spring can be changed according to the car suspension requirement, the suspension performance is improved, and car smoothness and taking comfort are effectively improved.

Description

Technical field [0001] The invention relates to an elastic element of a vehicle suspension, in particular to a shape memory alloy type leaf spring and a method for realizing variable stiffness. Background technique [0002] Shape memory alloy is an alloy material that can completely eliminate its deformation at a lower temperature and restore its original shape after heating up. It is a smart material that can memorize the original shape. Usually can be divided into temperature control type shape memory alloy and magnetron type shape memory alloy. Magnetically Controlled ShapeMemory Alloy (MSM) has a linear deformation rate of 6% and a bending deformation rate of 18% at room temperature. Compared with temperature-controlled shape memory alloys, MSM not only has a large deformation rate and is easy to control, but also has a higher dynamic response speed, which is 80 times the frequency response of temperature-controlled shape memory alloys, which can meet the requirements of gen...

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): F16F1/22B60G17/02
CPCB60G17/023F16F1/22F16F2224/0208F16F2228/06
Inventor 张龙飞袁朝春高泽宇陈龙吴飞刘慧
Owner JIANGSU 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