CN205211270U - Propagation of demonstration sound needs device of medium - Google Patents
Propagation of demonstration sound needs device of medium Download PDFInfo
- Publication number
- CN205211270U CN205211270U CN201520912327.6U CN201520912327U CN205211270U CN 205211270 U CN205211270 U CN 205211270U CN 201520912327 U CN201520912327 U CN 201520912327U CN 205211270 U CN205211270 U CN 205211270U
- Authority
- CN
- China
- Prior art keywords
- reflective membrane
- light source
- sound
- support
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
The utility model relates to a propagation of demonstration sound needs device of medium, including valve, ground bottle lid, ground bottle, laser lamp -house, light source fixing clip, light source support, light source fixing support, reflective membrane connecting axle, reflective membrane, reflective membrane support, bluetooth speaker, sound box support, semicircle blotter, reflective membrane support, reflective membrane bracing piece, demonstration facula wall, light path light. The utility model discloses an idealized model of " become listen into seeing ", it needs the air dielectric principle to observe the more deep propagation of understanding sound of the observation mode that replaces the tradition experiment to listen with the ear with eyes, produce what kind of influence to vibrations after knowing the isolation air simultaneously, the utility model discloses be superior to traditional " bell jar experiment " appearance, obvious, the directly perceived nature of experiment phenomena is strong moreover, has spreading value.
Description
Technical field
The utility model belongs to the technical field of physics teaching experimental device, particularly relates to a kind of demonstrating sound and propagates the device needing medium.
Background technology
The transmission of mechanical wave energy, needs the quasi-elastic collision of certain material elementary particle to realize.The composition of this material, shape, density, motion state, determine direction of transfer and the speed of Wave energy, and this material played a decisive role to wave propagation, is called the medium of this ripple.Sound wave (SoundWave or AcousticWave) is the mode of propagation of sound.Sound wave is a kind of mechanical wave, and vibrated by object (sound source) and produce, the space of Acoustic Wave Propagation is just called sound field.Be a kind of compressional wave when propagating in gas and liquid medium, but may shear wave be mixed with when propagating in solid dielectric.The sound wave frequency that people's ear can be heard is generally between 20 hertz to 20000 hertz.Solid, liquids and gases material are the media that sound (sound wave) transmits.Sound wave in air is that the vibration of air particles is formed.
Sound is in communication process, the motion of medium with the naked eye cannot be observed, therefore, in physics teaching in secondary school, drawing of " propagation of sound needs medium " this physics conclusion, relies on Physical Experiment, by observation experiment phenomenon, experimental phenomena after contrast exists medium and removes medium, show that the propagation of sound needs this important physical conclusion of medium.
At present, checking " propagation of sound needs medium " this physics conclusion, what adopt is that " bell jar experiment " experimental provision is tested by cloche (vacuum (-tight) housing), air pump, electric bell (or electronic sound source), experiment is placed in cloche by the electric bell of energising, the size of student's listening, the air in vacuum (-tight) housing is taken out again by air pump, experience the size of sound, contrast the size variation of front and back sound of bleeding, illustrate that sound can not be propagated in a vacuum, the propagation of sound needs air---medium.
Adopt this device test subject matter be: 1) due to the deadening of glass bell jar, electric bell is once put as in cloche, and sound has become very little, adds by the noise of air pump, and student cannot contrast twice, front and back sound size.Experimental phenomena is very not obvious, and demonstrating effect is bad, causes teachers on classroom, do not demonstrate this experiment; 2) between cloche and pedestal rubber seal, surface of contact is too large, and be difficult to accomplish well airtight, gas leakage is unavoidable, and after a period of time deposited by instrument, ageing of rubber causes completing experiment, and instrument is shorter for serviceable life.
Traditional " bell jar experiment " instrument ubiquity: experimental phenomena is not obvious, lack deficiencies such as obviously contrasting, demonstrating visual's property is poor, operation inconvenience, serviceable life are short, this also just existing teaching aid " change is listened into seeing " thinking of development that designs need be carried out.
Utility model content
Demonstrating effect is bad, operation is inconvenient, serviceable life is not enough in order to solve " bell jar experiment " in physics teaching in secondary school for the utility model, the problem of sound " change is listened into seeing " can not be provided a kind of demonstrating sound to propagate the device needing medium.
The technical scheme that the utility model is taked for the technical matters existed in solution known technology is:
Demonstrating sound propagates the device needing medium, comprises valve, ground stoppered bottle cap, port grinding bottle, LASER Light Source, the fixing card of light source, light source bracket, light source hold-down support, reflective membrane coupling shaft, reflective membrane, reflective membrane support, Baffle Box of Bluetooth, sound box bracket, semicircle cushion pad, reflective membrane bearing, reflective membrane support bar, display hot spot metope, light path light;
Described valve is arranged on ground stoppered bottle cap top, and ground stoppered bottle cap is enclosed within port grinding bottle top; Described LASER Light Source, light source fix card, light source bracket, light source hold-down support, reflective membrane coupling shaft, reflective membrane, reflective membrane support, Baffle Box of Bluetooth, sound box bracket, semicircle cushion pad, reflective membrane bearing, reflective membrane support bar, light path light are all arranged on port grinding bottle inside; Display hot spot metope is arranged on port grinding bottle outside;
Described LASER Light Source is fixed on the fixing card of light source, light source is fixed cartoon and is crossed light source bracket and light source hold-down support is adhesively fixed on port grinding bottle inwall, light path ray cast is on reflective membrane, reflective membrane is positioned at LASER Light Source bottom, reflective membrane is fixed on reflective membrane coupling shaft to be hinged mode, reflective membrane coupling shaft is hinged on reflective membrane support, to be fixed on reflective membrane support with reflective membrane support bar and to be positioned at reflective membrane bottom, reflective membrane support is fixed on reflective membrane bearing, reflective membrane bearing is fixed on semicircle cushion pad, Baffle Box of Bluetooth to be fixed on audio amplifier bearing and to be positioned at reflective membrane support lower left quarter, audio amplifier bearing is placed on semicircle cushion pad, semicircle cushion pad is arranged on bottom port grinding bottle, light path light is incident upon on display hot spot metope by reflective membrane.
Further, described ground stoppered bottle cap offers through hole, valve is communicated with port grinding bottle inside by through hole.
Further, described light source is fixed card and is set to regulate the fixing card of the light source of LASER Light Source upper-lower position.
Further, described semicircle cushion pad is set to two, the goods that semicircle cushion pad 13 is produced through molded vulcanization moulding process with glass cement, silica gel starting material, and glass rubber cushion can be adsorbed on glass surface easily, and be easy to take off, without any residue at glass surface; Can prevent the friction of surface of contact, avoid surface of contact scratch, glass cement spacer has shockproof, anti-skidding, crashproof, the anti-scratch aesthetic function of anti-scratch, and transparency is high.
Further, described Baffle Box of Bluetooth is provided with power switch.
Further, described reflective membrane adopts polyester plated film film.
Further, at ground stoppered bottle cap ground, appropriate vaseline is smeared at place, improves the obturation effect of bottle, covers bottle cap, and air pump tracheae and valve mouth are connected.
The advantage that the utility model has and good effect are: utilize the utility model to achieve the idealized model of " change is listened into seeing ", replace the propagation of the more deep understanding sound of the view mode of traditional experiment ear to need air dielectric principle with eye observation; After understanding air-isolation, what kind of impact is produced on vibrations simultaneously; Ground glass stoppered bottle replaces cloche, mounted valve that bottle cap is holed, and obturation effect is good, long service life; Baffle Box of Bluetooth replaces traditional sound source, and volume is little, broadcasting and closedown easy for installation, just realize sound with mobile phone; Ground glass stoppered bottle replaces cloche, mounted valve that bottle cap is holed, and obturation effect is good, long service life; Adopt polyester plated film film to do reflectance coating, lightweight, reflecting effect are good; By LASER Light Source, brightness is high, and demonstrating effect is obvious; The utility model solves sound in communication process, and the motion of medium is with the naked eye the difficult problem that cannot observe, and the utility model is better than traditional " bell jar experiment " instrument, and experimental phenomena is obvious, intuitive is strong, easy to operate, there is promotional value.
Accompanying drawing explanation
Fig. 1 is that the demonstrating sound that the utility model embodiment provides propagates the apparatus structure schematic diagram needing medium;
Fig. 2 is that the demonstrating sound that the utility model embodiment provides propagates the device ground stoppered bottle cap structural representation needing medium.
In figure: 1, valve; 2, ground stoppered bottle cap; 3, port grinding bottle; 4, LASER Light Source; 5, the fixing card of light source; 6, light source bracket, 7, light source hold-down support; 8, reflective membrane coupling shaft; 9, reflective membrane; 10, reflective membrane support; 11, Baffle Box of Bluetooth; 12, audio amplifier bearing, 13, semicircle cushion pad, 14, reflective membrane bearing; 15, reflective membrane support bar; 16, hot spot metope is shown; 17, light path light.
Embodiment
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows.
As depicted in figs. 1 and 2: a kind of demonstrating sound propagates the device needing medium, comprise valve 1, ground stoppered bottle cap 2, port grinding bottle 3, LASER Light Source 4, light source fix card 5, light source bracket 6, light source hold-down support 7, reflective membrane coupling shaft 8, reflective membrane 9, reflective membrane support 10, Baffle Box of Bluetooth 11, sound box bracket 12, semicircle cushion pad 13, reflective membrane bearing 14, reflective membrane support bar 15, display hot spot metope 16, light path light 17;
Described valve 1 is arranged on ground stoppered bottle cap 2 top, and ground stoppered bottle cap 2 is enclosed within port grinding bottle 3 top; It is inner that described LASER Light Source 4, light source fix card 5, light source bracket 6, light source hold-down support 7, reflective membrane coupling shaft 8, reflective membrane 9, reflective membrane support 10, Baffle Box of Bluetooth 11, sound box bracket 12, semicircle cushion pad 13, reflective membrane bearing 14, reflective membrane support bar 15, light path light 17 is all arranged on port grinding bottle 3; It is outside that display hot spot metope 16 is arranged on port grinding bottle 3;
Described LASER Light Source 4 is fixed on light source and fixes on card 5, light source is fixed card 5 and is adhesively fixed on port grinding bottle 3 inwall by light source bracket 6 and light source hold-down support 7, light path light 17 is incident upon on reflective membrane 9, reflective membrane 9 is positioned at LASER Light Source 4 bottom, reflective membrane 9 is fixed on reflective membrane coupling shaft 8 to be hinged mode, reflective membrane coupling shaft 8 is hinged on reflective membrane support 10, to be fixed on reflective membrane support 10 with reflective membrane support bar 15 and to be positioned at reflective membrane 9 bottom, reflective membrane support 10 is fixed on reflective membrane bearing 14, reflective membrane bearing 14 is fixed on semicircle cushion pad 13, Baffle Box of Bluetooth 11 to be fixed on audio amplifier bearing 12 and to be positioned at reflective membrane support 10 lower left quarter, audio amplifier bearing 12 is placed on semicircle cushion pad 13, semicircle cushion pad 13 is arranged on bottom port grinding bottle 3, light path light 17 is incident upon on display hot spot metope 16 by reflective membrane 9.
Described ground stoppered bottle cap 2 offers through hole, and valve 1 is communicated with port grinding bottle 3 inside by through hole, and ground glass stoppered bottle replaces cloche, and mounted valve that bottle cap is holed, obturation effect is good, long service life.
Described light source is fixed card 5 and is set to regulate the fixing card of the light source of LASER Light Source upper-lower position, and by LASER Light Source, brightness is high, and demonstrating effect is obvious.
Described semicircle cushion pad 13 is set to two, the goods that semicircle cushion pad 13 is produced through molded vulcanization moulding process with glass cement, silica gel starting material, glass rubber cushion can be adsorbed on glass surface easily, and is easy to take off, without any residue at glass surface; Can prevent the friction of surface of contact, avoid surface of contact scratch, glass cement spacer has shockproof, anti-skidding, crashproof, the anti-scratch aesthetic function of anti-scratch, and transparency is high.
Described Baffle Box of Bluetooth 11 is provided with power switch, and Baffle Box of Bluetooth replaces traditional sound source, and volume is little, broadcasting and closedown easy for installation, just realize sound with mobile phone.
Described reflective membrane 9 adopts polyester plated film film, and adopt polyester plated film film to do reflectance coating, lightweight, reflecting effect are good.By LASER Light Source, brightness is high, and demonstrating effect is obvious;
At ground stoppered bottle cap 2 ground, appropriate vaseline is smeared at place, improves the obturation effect of bottle, covers bottle cap, and air pump tracheae and valve mouth are connected.
Instantiation and principle of work:
When handle assembly is placed in vial, closed Baffle Box of Bluetooth power switch, opens laser pen switch, and adjustment mobile phone bluetooth function completes bluetooth with Baffle Box of Bluetooth and is connected.
In order to improve the obturation effect of bottle, at bottle cap ground, appropriate vaseline is smeared at place, covers bottle cap, and air pump tracheae and valve mouth are connected.
The effect of semicircle cushion pad mainly absorbs the vibration of audio amplifier, avoids, because audio amplifier vibration causes vial to vibrate, causing reflective membrane to vibrate, and two and half ring washers are exactly generally speaking the vibration of isolation audio amplifier.
A first melody play by mobile phone, student can hear the musical sound that in bottle, audio amplifier sends, propagate in air in bottle due to audio amplifier sound simultaneously and form sound wave, sound wave makes reflective membrane shake, the light that LASER Light Source sends is radiated on reflective membrane, reflection through reflective membrane is incident upon on metope far away, can be clear that hot spot moves up and down on the wall.Teacher can mark the scope of spot motion on the wall with red adhesive tape, for Germicidal efficacy is below made comparisons.
Start air pump, after gradually the air in bottle being taken out, without medium (air), the sound that loudspeaker send can not pass to reflective membrane, and reflective membrane is static, can observe the hot spot almost transfixion on metope.Can illustrate that the propagation of sound needs medium well by paired observation.
Valve-off, closes air pump, now can hear that slowly open valve, the hot spot can obviously observed on wall starts again to move up and down, and sound also increases to some extent than sound less before just now bleeding.
Whole description of test, the propagation of sound needs medium.
The above is only to preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (6)
1. a demonstrating sound propagates the device needing medium, it is characterized in that, this demonstrating sound is propagated needs the device of medium to comprise valve, ground stoppered bottle cap, port grinding bottle, LASER Light Source, the fixing card of light source, light source bracket, light source hold-down support, reflective membrane coupling shaft, reflective membrane, reflective membrane support, Baffle Box of Bluetooth, sound box bracket, semicircle cushion pad, reflective membrane bearing, reflective membrane support bar, display hot spot metope, light path light;
Described valve is arranged on ground stoppered bottle cap top, and ground stoppered bottle cap is enclosed within port grinding bottle top; Described LASER Light Source, light source fix card, light source bracket, light source hold-down support, reflective membrane coupling shaft, reflective membrane, reflective membrane support, Baffle Box of Bluetooth, sound box bracket, semicircle cushion pad, reflective membrane bearing, reflective membrane support bar, light path light are all arranged on port grinding bottle inside; Display hot spot metope is arranged on port grinding bottle outside;
Described LASER Light Source is fixed on the fixing card of light source, light source is fixed cartoon and is crossed light source bracket and light source hold-down support is adhesively fixed on port grinding bottle inwall, light path ray cast is on reflective membrane, reflective membrane is positioned at LASER Light Source bottom, reflective membrane is fixed on reflective membrane coupling shaft to be hinged mode, reflective membrane coupling shaft is hinged on reflective membrane support, to be fixed on reflective membrane support with reflective membrane support bar and to be positioned at reflective membrane bottom, reflective membrane support is fixed on reflective membrane bearing, reflective membrane bearing is fixed on semicircle cushion pad, Baffle Box of Bluetooth to be fixed on audio amplifier bearing and to be positioned at reflective membrane support lower left quarter, audio amplifier bearing is placed on semicircle cushion pad, semicircle cushion pad is arranged on bottom port grinding bottle, light path light is incident upon on display hot spot metope by reflective membrane.
2. demonstrating sound propagates the device needing medium as claimed in claim 1, and it is characterized in that, described ground stoppered bottle cap offers through hole, and valve is communicated with port grinding bottle inside by through hole.
3. demonstrating sound propagates the device needing medium as claimed in claim 1, it is characterized in that, described light source is fixed card and is set to regulate the fixing card of the light source of LASER Light Source upper-lower position.
4. demonstrating sound propagates the device needing medium as claimed in claim 1, and it is characterized in that, described semicircle cushion pad is set to two.
5. demonstrating sound propagates the device needing medium as claimed in claim 1, and it is characterized in that, described Baffle Box of Bluetooth is provided with power switch.
6. demonstrating sound propagates the device needing medium as claimed in claim 1, it is characterized in that, described reflective membrane adopts polyester plated film film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912327.6U CN205211270U (en) | 2015-11-16 | 2015-11-16 | Propagation of demonstration sound needs device of medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912327.6U CN205211270U (en) | 2015-11-16 | 2015-11-16 | Propagation of demonstration sound needs device of medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205211270U true CN205211270U (en) | 2016-05-04 |
Family
ID=55848973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520912327.6U Expired - Fee Related CN205211270U (en) | 2015-11-16 | 2015-11-16 | Propagation of demonstration sound needs device of medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205211270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146505A (en) * | 2017-07-05 | 2017-09-08 | 夏晓东 | A kind of senior middle school physics teaching apparatus for demonstrating and method |
| CN114419965A (en) * | 2022-01-14 | 2022-04-29 | 特斯联科技集团有限公司 | Sound wave visual interaction device |
-
2015
- 2015-11-16 CN CN201520912327.6U patent/CN205211270U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146505A (en) * | 2017-07-05 | 2017-09-08 | 夏晓东 | A kind of senior middle school physics teaching apparatus for demonstrating and method |
| CN114419965A (en) * | 2022-01-14 | 2022-04-29 | 特斯联科技集团有限公司 | Sound wave visual interaction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203378038U (en) | Screen sounding device and mobile terminal using screen sounding device | |
| CN203352639U (en) | Screen sounding device and mobile terminal using same device | |
| CN205211270U (en) | Propagation of demonstration sound needs device of medium | |
| WO2012174812A1 (en) | Portable resonance speaker | |
| CN202058351U (en) | Multifunctional vibration imaging demonstrator | |
| KR101831747B1 (en) | speaker volume expanding apparatus combined with stand for smart phone | |
| CN109121051A (en) | Microphone device | |
| CN201663651U (en) | Transparent sounding-medium electric flat-panel loudspeaker | |
| CN202917067U (en) | Sound propagation demonstration instrument | |
| CN202503632U (en) | Sound box and sound system | |
| CN202310076U (en) | Miniature loudspeaker | |
| CN206058683U (en) | A kind of demonstrating sound propagates the device for needing medium | |
| CN203858791U (en) | Sound energy experimental instrument | |
| CN104504972B (en) | Sound transmission demonstration instrument | |
| WO2006069056A2 (en) | An audio speaker utilizing an unanchored magnet for primary force generation | |
| CN204614309U (en) | A kind of physics teaching sound propagation demonstrator | |
| CN201392605Y (en) | Sound transmission displayer | |
| CN207135245U (en) | A kind of pronunciation component, mobile terminal, headphone | |
| US9561970B2 (en) | Audio device for altering water structure | |
| CN203503211U (en) | Sound energy demonstration device | |
| CN206331697U (en) | A kind of double-tone pitches resonance demonstration instrument | |
| CN203181212U (en) | Screen sounder | |
| CN207251875U (en) | A kind of pull rod sound equipment with illumination reflector lamp component | |
| CN202525487U (en) | Music desk | |
| CN201946287U (en) | Sound absorbing device for suona horn |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20161116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |