Supercharge Your Innovation With Domain-Expert AI Agents!

Single-sided multi-pole annular magnetizing magnetic sheet for magnetic attraction

A ring-shaped, magnetic sheet technology, applied in the direction of magnets, magnetic objects, permanent magnets, etc., can solve the problems of unstable magnetic attraction, non-rotating magnetic sheets, poor reliability, etc., and achieve high magnetic field utilization rate, meet the use conditions, and magnetic field strength low effect

Pending Publication Date: 2022-02-18
HANGZHOU QIANSHI TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the axially magnetized magnetic sheet is that the magnetic attraction is unstable under the action of external force, and the unfavorable factors that affect the magnetic attraction such as dislocation between the two axially magnetized magnetic sheets are prone to occur, and the reliability is poor. Magnetic interference from external structures
The disadvantage of the single-sided multi-pole magnetized magnetic sheet is that it cannot realize the rotation of the single-sided multi-polar magnetized magnetic sheet at any angle in the circumferential direction
The disadvantage of the double-sided multi-pole magnetized magnetic sheet is that it will generate magnetic field interference to the external structure, and there will be adverse factors affecting the magnetic attraction such as positioning deviation under the action of an external force. At the same time, the magnetic sheet cannot be in the circumferential direction during magnetic attraction rotation at any angle
[0007] There are more or less problems in the magnetic attraction process of the above-mentioned various magnetic sheet magnetization methods, which affect the purpose and effect of the magnetic attraction, and the use is greatly restricted

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
  • Single-sided multi-pole annular magnetizing magnetic sheet for magnetic attraction
  • Single-sided multi-pole annular magnetizing magnetic sheet for magnetic attraction
  • Single-sided multi-pole annular magnetizing magnetic sheet for magnetic attraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 10 A single-sided multi-pole annular magnetized magnetic sheet for magnetic attraction is shown, including a magnetic sheet body 1 and two annular magnetic poles 2 (two poles), the diameter of the magnetic sheet body is 20mm, and the height is 5mm. The body pellets are made by injection molding orientation process. The ferrite magnetic powder in the injection molded ferrite pellets accounts for 90%, and the density of the injection molded ferrite pellets is 3.58g / cm 3 , the magnetic energy product is 1.98MGOe, two ring-shaped magnetic poles are concentrically arranged radially from the inside to the outside with the center of the magnetic plate body as the center (N pole, S pole), the two ring-shaped magnetic poles are arranged in a Halbach array, and the two ring-shaped magnetic poles The polarity of the magnetic sheet body is opposite, the end face of the side with the stronger magnetic field of the magnetic sheet body forms the magnetic attraction use...

Embodiment 2

[0041]Compared with Example 1, Example 2 differs in that the main body of the magnetic sheet is made by injection molding anisotropic NdFeB pellets through an injection molding orientation process, and the anisotropic NdFeB pellets in injection molding anisotropic NdFeB pellets Boron magnetic powder accounts for 93%, and the density of injection-molded anisotropic NdFeB pellets is 5.15g / cm 3 , the magnetic energy product is 14.2MGOe, and the rest are exactly the same as in Example 1.

[0042] The magnetic attraction force test was carried out on the magnetic sheet sample prepared in this embodiment, and the results are as follows: F=60.96N.

Embodiment 3

[0044] Compared with Example 1, Example 3 differs in that the main body of the magnetic sheet is made of injection-molded anisotropic SmFeN pellets through an injection molding orientation process, and the anisotropic SmFeN pellets in the injection-molded anisotropic SmFeN pellets Nitrogen magnetic powder accounts for 90%, and the density of injection-molded anisotropic samarium-iron-nitrogen pellets is 4.33g / cm 3 , the magnetic energy product is 9.42MGOe, and the rest are exactly the same as in Example 1.

[0045] The magnetic attraction force test was carried out on the magnetic sheet sample prepared in this embodiment, and the results are as follows: F=40.34N.

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
Diameteraaaaaaaaaa
Heightaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a single-sided multi-pole annular magnetizing magnetic sheet for magnetic attraction. The single-sided multi-pole annular magnetizing magnetic sheet for magnetic attraction comprises a magnetic sheet body, at least two annular magnetic poles are arranged in the magnetic sheet body from inside to outside along the radial direction, the annular magnetic poles are arranged in a Halbach array, the polarities of the adjacent annular magnetic poles are opposite, the end face of the side, with the strong magnetic field, of the magnetic sheet body forms a magnetic suction use face, and the end face of the side, with the weak magnetic field, of the magnetic sheet body forms a non-magnetic suction use face. According to the invention, the use reliability is high, positioning is accurate, adverse factors, such as positioning deviation, influencing magnetic attraction are avoided, magnetic field interference on an external structure is avoided, and rotation at any angle in the circumferential direction can be realized during magnetic attraction, and the use in various occasions can be met.

Description

technical field [0001] The invention relates to a magnetic sheet, in particular to a single-sided multi-pole annular magnetized magnetic sheet for magnetic attraction. Background technique [0002] The magnetic sheet used for magnetic attraction has a wide application prospect in the field of magnetic attraction, such as wireless charging of mobile phones, watches or handles, various buckles, buttons, etc., when the magnetic sheet is magnetically attracted, it has a high degree of magnetic attraction and positioning. Requirements; At the same time, in order to reduce the interference of the magnetic field to other components, the magnetic field generated by the magnetic sheet is required to be concentrated on the magnetic working surface, and the magnetic field on the non-magnetic working surface should be as small as possible. Therefore, the biggest technical difficulties in the magnetic attraction process of the magnetic sheet are the precise positioning of the magnetic sh...

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): H01F7/02H01F13/00
CPCH01F7/0221H01F7/021H01F7/0215H01F13/003
Inventor 蔡伟施志平王伟沈森棋陈海波虞洪峰赵宁宁王勇杰王鑫姜力强车声雷
Owner HANGZHOU QIANSHI TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com