CN207115819U - A kind of vacuum sound insulation experimental demonstration device - Google Patents
A kind of vacuum sound insulation experimental demonstration device Download PDFInfo
- Publication number
- CN207115819U CN207115819U CN201720638151.9U CN201720638151U CN207115819U CN 207115819 U CN207115819 U CN 207115819U CN 201720638151 U CN201720638151 U CN 201720638151U CN 207115819 U CN207115819 U CN 207115819U
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- CN
- China
- Prior art keywords
- syringe
- wire
- loudspeaker
- demonstration device
- experimental demonstration
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- 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
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- Auxiliary Devices For Music (AREA)
Abstract
The utility model discloses a kind of vacuum sound insulation experimental demonstration device, it is characterised in that：Including syringe, loudspeaker, emulsion tube, wire, iron clamp, light emitting diode, power supply and switch；Wherein, the emulsion tube is tightly placed in the pin mouth end of the syringe, the loudspeaker, light emitting diode, power supply and switch connect into path by the wire, the loudspeaker is placed in inside the syringe at pin mouth end, the wire passes through pin mouth end and the emulsion tube of the syringe, the light emitting diode, power supply and switch are placed in the outside of syringe, and for the wire from the fine copper wire for treating insulated paint, the syringe is capacity 100mL syringe.Vacuum sound insulation experimental demonstration device is with light and handy, economy, and easily materials, are easy to carry, conveniently the advantages that operation.
Description
Technical field
It the utility model is related to physics teaching demonstration teaching aid technical field, and in particular to a kind of vacuum sound insulation experimental demonstration dress
Put.
Background technology
In physical teaching course, the principle of sound transmission is exactly one of course.In order to which demonstrating sound is in vacuum
The property of middle propagation, teacher generally require to complete by the teaching aid of sound transmission.In some teaching aids, sounding body therein is all
Fixing device is needed to be fixed so that sounding body has the structure contacted with other media, it is difficult to which demonstrating sound is in a vacuum
The property of propagation, the problem of degree of accuracy that demonstrating sound is propagated in a vacuum is low be present.And in the teaching aid with magnetic suspension structure
In, because structure is unreasonable, magnetic interference therein is than more serious, it is also difficult to the property that demonstrating sound is propagated in a vacuum.
But general teaching aid of the prior art is also difficult to the property that demonstrating sound is propagated in a vacuum.Such as China is specially
Sharp notification number CN101593446A, publication date on December 02nd, 2009, a kind of entitled sound transmission teaching aid of innovation and creation should
Patent Case discloses a kind of teaching aid of sound transmission, passes through container, syringe and the isostructural combined innovation of buzzer so that learns
Life can intuitively perceive demonstration air-borne sound ability, but the work vacuumized during the teaching aid of the Patent Case by syringe
Make, suction is small, and existing can not the problem of effectively can demonstrating sound be propagated in a vacuum.
The content of the invention
The purpose of this utility model is to be directed to deficiency of the prior art, there is provided a kind of vacuum sound insulation experimental demonstration device.
Vacuum sound insulation experimental demonstration device is with light and handy, economy, and easily materials, are easy to carry, conveniently the advantages of operation.
The purpose of this utility model is realized by following technological means：A kind of vacuum sound insulation experimental demonstration device, its
It is characterised by：Including syringe, loudspeaker, emulsion tube, wire, iron clamp, light emitting diode, power supply and switch；Wherein, the breast
Sebific duct is tightly placed in the pin mouth end of the syringe, and the loudspeaker, light emitting diode, power supply and switch are connected by the wire
Into path, the loudspeaker is placed in inside the syringe at pin mouth end, and the wire passes through the pin mouth of the syringe
End and emulsion tube, the light emitting diode, power supply and switch are placed in the outside of syringe.
Preferably, the wire selects the fine copper wire of tape insulation paint.
Preferably, the syringe is capacity 100mL syringe.
During installation, emulsion tube is tightly placed in the pin mouth end of syringe；And the fine copper wire of tape insulation paint is welded with electric iron
Onto loudspeaker；The piston of syringe is taken out, fine copper wire is passed through into glass syringe method pin mouth and emulsion tube, allows loudspeaker to be adjacent to injection
Pin mouth end inside device, after applying vaseline on the piston of syringe, several circles are rotated further by, can so prevent syringe gas leakage；Can
Circuit is fixed (switch will expose, and be easy to control) on the injector with adhesive tape.
Compared with prior art, the utility model has advantages below：Vacuum sound insulation experimental demonstration device have it is light and handy,
Economy, easy materials, is easy to carry, and convenient the advantages of operating, is easy to promote in all kinds of middle schools, in lecture experiment, by answering
Tested with the every-day object in life, the interest of Students ' Learning physics can be excited, evoke the desire that student visits plain new knowledge,
Embody the new lesson reform spirit that physics is moved towards from life.
Brief description of the drawings
The structural representation of Fig. 1 vacuum sound insulation experimental demonstration device.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Structural representation of the present utility model as shown in Figure 1, a kind of vacuum sound insulation experimental demonstration device, its feature exist
In：Including syringe 1, loudspeaker 2, emulsion tube 3, wire 4, iron clamp 5, light emitting diode 6, power supply 7 and switch 8；Wherein, it is described
Emulsion tube 3 is tightly placed in the pin mouth end of the syringe 1, and the loudspeaker 2, light emitting diode 6, power supply 7 and switch 8 are by described
Wire 4 connects into path, and the loudspeaker 2 is placed in the inside of syringe 1 at pin mouth end, and the wire 4 is described in
The pin mouth end of syringe 1 and emulsion tube 3, the light emitting diode 6, power supply 7 and switch 8 are placed in the outside of syringe 1, described to lead
For line 4 from the fine copper wire of tape insulation paint, the syringe 1 is capacity 100mL syringe.
The loudspeaker 2, light emitting diode 6, power supply 7 and switch 8 connect into path by the wire 4, from music
Circuit occurs for the acousto-optic on greeting card.
The operating procedure of vacuum sound insulation experimental demonstration device：(1) syringe piston is slowly shifted onto the pin mouth of syringe
End, untill contacting loudspeaker, the air inside Inside Syringe, closure switch, there is musical sound, and LED lighting as far as possible
(display has been powered)；
(2) emulsion tube is clamped with iron clamp, does not allow air to be flowed into from the pin mouth of syringe, remain to hear musical sound, diode
Luminous, outwards rapid mobile piston, diode still light, and musical sound is descending, and by small to nothing, this is due in syringe
Air is very thin, near vacuum, illustrates that vacuum can not propagate sound；
(3) remove the iron clamp on emulsion tube, then allow air to be flowed into from the pin mouth of syringe, hear again musical sound by it is small to
Greatly, illustrate that air can propagate sound.
In a word, the utility model provides a kind of vacuum sound insulation experimental demonstration device.It is described above, only the utility model
A part of embodiment, the scope of protection of the utility model is not limited thereto, any skill for being familiar with the art
Art personnel are in the technical scope that the utility model discloses, the change or replacement that can readily occur in, should all cover new in this practicality
Within the protection domain of type.
Claims (3)
- The experimental demonstration device 1. a kind of vacuum insulates against sound, it is characterised in that：Including syringe (1), loudspeaker (2), emulsion tube (3), Wire (4), iron clamp (5), light emitting diode (6), power supply (7) and switch (8)；Wherein, the emulsion tube (3) is tightly placed in the note The pin mouth end of emitter (1), the loudspeaker (2), light emitting diode (6), power supply (7) and switch (8) are connected by the wire (4) Path is connected into, the loudspeaker (2) is placed at the internal close pin mouth end of the syringe (1), and the wire (4) passes through the note The pin mouth end of emitter (1) and emulsion tube (3), the light emitting diode (6), power supply (7) and switch (8) are placed in syringe (1) It is outside.
- The experimental demonstration device 2. vacuum as claimed in claim 1 insulates against sound, it is characterised in that：The wire (4) selects tape insulation The fine copper wire of paint.
- The experimental demonstration device 3. vacuum as claimed in claim 2 insulates against sound, it is characterised in that：The syringe (1) is capacity 100mL syringe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720638151.9U CN207115819U (en) | 2017-06-02 | 2017-06-02 | A kind of vacuum sound insulation experimental demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720638151.9U CN207115819U (en) | 2017-06-02 | 2017-06-02 | A kind of vacuum sound insulation experimental demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207115819U true CN207115819U (en) | 2018-03-16 |
Family
ID=61594275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720638151.9U Expired - Fee Related CN207115819U (en) | 2017-06-02 | 2017-06-02 | A kind of vacuum sound insulation experimental demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207115819U (en) |
-
2017
- 2017-06-02 CN CN201720638151.9U patent/CN207115819U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20190602 |