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

Motor vehicle horn long-time sounding protection method and circuit

A technology for protecting circuits and motor vehicles, applied in transducer circuits, electrical components, vehicle parts, etc., can solve the problems of burnt contacts of horns, damage to horns, and the time for each horn to sound more than 3-4 minutes, so as to achieve protection Effects of overheating damage

Active Publication Date: 2014-09-24
万喻
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the horns widely used in automobiles are mainly divided into mechanical electric horns and electronic horns. According to the standard, the sounding time of these two horns should not exceed 3-4 minutes each time, otherwise the horn contacts will be burned, or the horn electromagnet will be damaged. The horn is damaged due to the melting of the coil insulating paint layer and the electromagnet coil frame
However, in some special cases in actual use, the horn may sound for more than 3-4 minutes each time.

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
  • Motor vehicle horn long-time sounding protection method and circuit
  • Motor vehicle horn long-time sounding protection method and circuit
  • Motor vehicle horn long-time sounding protection method and circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] An embodiment of the present invention provides a motor vehicle horn beeping protection circuit for a long time. The protection circuit includes a horn coil, and is characterized in that it also includes: a temperature detection unit for detecting the temperature of the horn coil when the motor vehicle horn is working or a temperature close to it; a control unit for detecting the temperature of the horn coil when the motor vehicle horn is working When the coil temperature increases, reduce the horn drive current.

[0019] figure 1 A protection circuit diagram for a motor vehicle horn sounding for a long time provided by the embodiment of the present invention. Such as figure 1 As shown, the protection circuit includes a horn coil and a positive temperature coefficient power thermistor PTC element.

[0020] The power thermistor PTC element with a positive temperature coefficient can be used as a detection and control unit, and is connected in series between the speake...

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 protection method and circuit, for preventing overheating damage caused by long-time sounding of a motor vehicle mechanical electric horn and a motor vehicle electronic horn. In one embodiment, the protection circuit comprises a horn coil, and is characterized by further comprising a temperature detecting unit which is used for detecting the temperature of the horn coil when a motor vehicle horn works and a similar temperature, and a control unit which reduces horn driving currents when the motor vehicle horn works and the temperature of the horn coil increases, such that the horn is prevented from damage caused by overheating, and the motor vehicle mechanical electric horn and the motor vehicle electronic horn are effectively protected.

Description

technical field [0001] The invention relates to the field of motor vehicle horns, in particular to a protection method and a circuit thereof when the motor vehicle horn is sounding for a long time. Background technique [0002] At present, the horns widely used in automobiles are mainly divided into mechanical electric horns and electronic horns. According to the standard, the sounding time of these two horns should not exceed 3-4 minutes each time, otherwise the horn contacts will be burned, or the horn electromagnet will be damaged. The horn is damaged due to the melting of the coil insulation varnish and the solenoid coil frame. However, in some special cases in actual use, the horn may sound for more than 3-4 minutes each time. For example, in Brazil and other countries, due to reasons such as weddings and funerals, users often honk the horn for a long time to show respect. Therefore, it is required that the horn can continuously sound for one hour without damage. Con...

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): H04R3/00B60Q5/00
Inventor 万喻
Owner 万喻
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