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

Vacuum self-made teaching tool unable to emit sound

A vacuum and teaching aid technology, which is applied in the field of teaching aids, can solve the problems of inconvenient portability, aging teaching aids, and large volume, and achieve the effects of easy portability and operation, intuitive and clear phenomena, and simple operation

Inactive Publication Date: 2014-01-01
罗贤勇 +2
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. The traditional experimental teaching aids have a serious aging problem, which is the main reason for poor air tightness and low vacuum
[0005] 3. The demonstration experiment equipment has many parts and is bulky and inconvenient to carry

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
  • Vacuum self-made teaching tool unable to emit sound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Such as figure 1 Shown, a kind of self-made teaching aid that vacuum can not transmit sound, comprises music player 8 and vacuum device, is provided with speaker device on the music player device, and speaker device is placed in vacuum device. Music playing device 8 and sound amplifying device can arbitrarily select required style or model, and every music playing device and sound amplifying device that can cooperate with the working needs of the present invention, in conjunction with the technical solution content of the present invention, all within the scope of protection of the invention . The vacuum device includes a cylindrical body 3, one end of the cylindrical body 3 is provided with a pinhole seat 1, and a miniature microphone device 2 is arranged in the pinhole seat 1, and the miniature microphone device 2 is electrically connected to the loudspeaker device 11 through a wire 12. The end of the cylindrical body 3 away from the pinhole seat runs through and is ...

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 vacuum self-made teaching tool unable to emit a sound. The vacuum self-made teaching tool is characterized by comprising a music player and a vacuum device, wherein a speaker device is arranged on the music player and arranged inside the vacuum device; the vacuum device comprises a cylinder; a pinhole seat is arranged at one end of the cylinder; a microtelephone device is arranged inside the pinhole seat, and electrically connected with a sound amplifying device through a lead; a connecting rod penetrates through and is arranged at one end, far away from the pinhole seat, of the cylinder; a piston is arranged at one end of the connecting rod extending inside the cylinder; the speaker device is arranged on the piston; the lead is wound on the connecting rod; one end of the lead is connected with the speaker device and the other end of the lead is connected with a lead which is connected with the music player. The vacuum self-made teaching tool is easy to draw materials, simple to operate, and straightforward in phenomenon, has the scientificity, the innovativeness and the enlightening property, and also simultaneously has the characteristics of being small in volume, and convenient to carry and operate.

Description

technical field [0001] The invention belongs to the field of teaching aids, and in particular relates to a self-made teaching aid which cannot transmit sound in a vacuum. Background technique [0002] Existing vacuum can't sound transmission demonstration experiment, what used is that the alarm bell of vacuum cover adds sound. This experimental teaching aid has following shortcoming and deficiency: [0003] 1. There are many places that need to be sealed, including the bottom of the glass cover, the air valve, the suction hose, the suction device, etc. If there are many places that need to be sealed, the airtightness will be poor. Even if Vaseline is added to assist the sealing, the effect is not ideal. [0004] 2. The aging problem of traditional experimental teaching aids is serious, which is the most important reason for poor air tightness and low vacuum. [0005] 3. The demonstration experiment equipment has many parts and is bulky and inconvenient to carry. Content...

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 Applications(China)
IPC IPC(8): G09B23/14
Inventor 罗贤勇黄国雄李秀祥
Owner 罗贤勇
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