CN201222317Y - Air-borne sound demonstration instrument - Google Patents
Air-borne sound demonstration instrument Download PDFInfo
- Publication number
- CN201222317Y CN201222317Y CNU2008200374828U CN200820037482U CN201222317Y CN 201222317 Y CN201222317 Y CN 201222317Y CN U2008200374828 U CNU2008200374828 U CN U2008200374828U CN 200820037482 U CN200820037482 U CN 200820037482U CN 201222317 Y CN201222317 Y CN 201222317Y
- Authority
- CN
- China
- Prior art keywords
- container
- buzzer
- air
- students
- borne sound
- 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
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- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Closures For Containers (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
The utility model relates to an air-borne sound transmission demonstration instrument, which is characterized by comprising a container, an injector and a buzzer, wherein the opening on the upper portion of the container is sealed by a plug, the syringe needle of the injector is inserted in the container through the plug, the buzzer is arranged in the container, a wire which is connected with the buzzer extends out of the container, and a power supply and a switch which are connected with the buzzer in series are arranged on the wire. The utility model is a teaching aid, which is specially used on air-borne sound transmission teaching, and is used to teach preschoolers and primary students to learn natural science, when in use, a switch is opened, the buzzer is started, and the buzzer sends out sound, the injector is forcibly outwards pumped, and part of air in the container is pumped out, since air is reduced, and buzzer sound of the buzzer is reduced, students can vividly and directly sense the sound transmission capability of air, and the air-borne sound transmission demonstration instrument can attract the interest of students, which is beneficial for improving the practical ability of students.
Description
Technical field
The utility model relates to a kind of teaching aid, particularly a kind of airborne sound demonstrator.
Background technology
In the prior art, when being carried out the natural science teaching, preschool child and the students of the junior years generally all do not have special teaching aid.Particularly to air can be transaudient teaching process in, only say that intuitive is relatively poor with teacher, student's cognitive ability can not obtain the performance.
Summary of the invention
Technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of simple in structure, lively airborne sound demonstrator intuitively is provided.
Technical problem to be solved in the utility model is to realize by following technical scheme.The utility model is a kind of airborne sound demonstrator, is characterized in, it comprises container, syringe and hummer, and the opening on described container top seals by plug, and the syringe needle of syringe inserts in the container by plug; Described hummer places in the container, connects outside the lead propelling container of hummer, and be provided with the power supply and the switch of connecting with hummer on lead.
Compared with prior art, the utility model is a kind of teaching aid that is specifically designed to the airborne sound teaching.Use it the preschool child and the students of the junior years are carried out the natural science teaching, during use, open switch, start hummer, hummer sends the sound, firmly syringe is taken out outward, air in the container is taken out some, because the air minimizing, so the buzzer of hummer reduces, the student can the very lively air of perception intuitively transaudient ability, can attract student's interest and help improving students'ability for practice.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present utility model, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1.A kind of airborne sound demonstrator, it comprises container 6, syringe 1 and hummer 5, and the opening on described container 6 tops is by plug 7 sealings, and the syringe needle 8 of syringe 1 inserts in the container 6 by plug 7; Described hummer 5 places in the container 1, connects outside lead 2 propelling containers 6 of hummer 5, and be provided with the power supply 4 and the switch 3 of connecting with hummer 5 on lead 2.
Claims (1)
1, a kind of airborne sound demonstrator, it is characterized in that, it comprises container (6), syringe (1) and hummer (5), and the opening on described container (6) top is by plug (7) sealing, and the syringe needle (8) of syringe (1) inserts in the container (6) by plug (7); Described hummer (5) places in the container (1), connects outside lead (2) propelling container (6) of hummer (5), and be provided with the power supply (4) and the switch (3) of connecting with hummer (5) on lead (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200374828U CN201222317Y (en) | 2008-05-29 | 2008-05-29 | Air-borne sound demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200374828U CN201222317Y (en) | 2008-05-29 | 2008-05-29 | Air-borne sound demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201222317Y true CN201222317Y (en) | 2009-04-15 |
Family
ID=40575820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200374828U Expired - Fee Related CN201222317Y (en) | 2008-05-29 | 2008-05-29 | Air-borne sound demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201222317Y (en) |
-
2008
- 2008-05-29 CN CNU2008200374828U patent/CN201222317Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 |