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

Ring varistor and preparation method thereof

A piezoresistor and ring-shaped technology, which is applied in the direction of resistors, resistance manufacturing, non-adjustable metal resistors, etc., can solve the problem that the mechanical strength and flexural strength of ring-shaped piezoresistors are reduced, and the mechanical strength of ring-shaped piezoresistors cannot meet the requirements. To meet the actual needs and other issues, to achieve the effect of improving mechanical strength and simple operation

Active Publication Date: 2013-01-02
GUANGZHOU MAGNET ELECTRICITY
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the ring varistor develops towards miniaturization, its thickness becomes thinner and its outer diameter becomes smaller and smaller, which will inevitably lead to a significant decrease in the mechanical strength (such as flexural strength) of the ring varistor.
In addition, the application field of ring varistors is also developing in the direction of automatic welding, which requires higher mechanical strength. test sorting) the mechanical strength of the prepared ring varistor can no longer meet the actual demand

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
  • Ring varistor and preparation method thereof
  • Ring varistor and preparation method thereof
  • Ring varistor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0038] According to the first embodiment of the present invention, the manufacturing method of the ring varistor includes the following steps:

[0039] Step 1. Mix zinc oxide, cobalt oxide, manganese carbonate and silicon dioxide at a molar ratio of 95:3:1.5:0.5. The spray-dried powder is dry pressed to prepare the ring varistor Porcelain blank

[0040] Step 2. Debinding the porcelain blank prepared in step 1 at 600°C;

[0041] Step 3. The debinding porcelain blank prepared in step 2 is sintered in the air at 1300°C to form a ceramic substrate;

[0042] Step 4. Use a screen printing process to make a glass paste prepared by weight ratio of 70% B-Bi-Si glass powder, 3% ethyl cellulose, 15% terpineol, and 12% dibutyl citrate The screen is printed on the ring resistor body and dried at 150°C. In the screen printing process, a pattern with a specific shape is used to cover the surface of the annular resistor, so that the glass paste cannot print the position of the annular resistor for ...

Embodiment 2

[0052] Figure 4 Shown is a schematic structural diagram of a ring varistor made according to the second embodiment of the present invention, which includes a ring resistor 10, electrodes 20 distributed on the upper end surface of the ring resistor 10, and distributed on the lower end surface of the ring resistor 10 The glass paste 30.

[0053] Compared with the first embodiment of the present invention, the second embodiment of the present invention is different in that: the arrangement of the annular resistor 10 and the electrode 20 is different; the distribution position of the glass paste 30 is different; the glass paste is screen-printed The sintering temperature of the annular resistor body is 650° C., and other preparation processes are the same as the first embodiment of the present invention, and will not be repeated.

[0054] According to experimental testing, the bending strength comparisons of the ring varistors of various sizes prepared according to the second embodime...

Embodiment 3

[0060] Figure 5 Shown is a schematic structural view of a ring varistor made according to the third embodiment of the present invention, which includes a ring resistor body 10, electrodes 20 distributed on the upper end surface of the ring resistor body 10, and distributed on the lower end surface of the ring resistor body 10 And the glass paste 30 on the outer side.

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 discloses a preparation method of a ring varistor. The method comprises the steps that: a ring resistor is prepared; glass slurry is screen-printed on the ring resistor, wherein positions for connection electrodes are preserved; the ring resistor with the screen-printed glass slurry is sintered; and electrodes are connected at the positions for connecting the electrodes. According to the ring varistor preparation method provided by the invention, the screen printing glass slurry is not provided on the ring resistor at the positions of the electrodes. The glass slurry is molten during sintering. The glass slurry wets the ring resistor, and penetrates into the ring resistor, such that an indented state is formed, and a mechanical interlocking connection is formed. Therefore, bending strength of the ring varistor is substantially improved. Also, the invention discloses a ring varistor.

Description

Technical field [0001] The invention belongs to the field of preparing ring varistors. More specifically, the invention relates to a ring varistor with ideal mechanical strength and a preparation method thereof. Background technique [0002] Ring varistor is a kind of semiconductor ceramic electronic components with dual functions of pressure sensitivity and capacitance. It has been widely used in miniature DC brush motors to eliminate sparks, protect brushes and suppress noise: use its pressure sensitive Features Absorb the transient sparks generated on the commutator, which can protect the motor brushes and windings; using its capacitive characteristics to suppress electromagnetic interference can prolong the working life of the micro-motor and improve the working quality of the micro-motor. [0003] The ring varistor usually includes a ring resistor and three or more electrodes connected to the ring resistor. The electrodes can be divided into end electrodes according to their d...

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): H01C17/30H01C7/102
Inventor 王学钊尹峰周水明
Owner GUANGZHOU MAGNET ELECTRICITY
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