CN202394425U - Tone and vibration frequency demonstration device - Google Patents
Tone and vibration frequency demonstration device Download PDFInfo
- Publication number
- CN202394425U CN202394425U CN2011204511440U CN201120451144U CN202394425U CN 202394425 U CN202394425 U CN 202394425U CN 2011204511440 U CN2011204511440 U CN 2011204511440U CN 201120451144 U CN201120451144 U CN 201120451144U CN 202394425 U CN202394425 U CN 202394425U
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- CN
- China
- Prior art keywords
- tone
- vibration frequency
- vertical rods
- wheel
- demonstration device
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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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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model discloses a tone and vibration frequency demonstration device, comprising a pedestal, which is fixedly provided with a rack. The rack comprises a horizontal rod and two vertical rods which are mutually parallel. Two ends of the horizontal rod are respectively connected with the tops of the two vertical rods; the horizontal rod is fixedly provided with an elastic steel disc through a screw; a rotation wheel is provided below the horizontal rod; the rotation wheel is positioned between the two vertical rods and is rotatingly connected with the vertical rods through a rotation shaft passing through the center of the rotation wheel; one end of the rotation shaft is connected with a crank; and the rotation wheel is provided with an obstacle screw corresponding to the elastic steel disc. According to the utility model, the tone and vibration frequency demonstration device is easy to perform and form melodies, and simultaneously, the relation of the tone and vibration frequency can be clearly shown to students through the device.
Description
Technical field
The utility model relates to a kind of acoustics teaching aid, relates in particular to a kind of tone and vibration frequency demonstration device.
Background technology
At present; The tone that in acoustics teaching, often needs the explanation metal material to receive to sound when beaing and the kind of material; And the tightness of material extending is relevant, and general teacher arbitrarily looks for different materials to demonstrate, and is directly perceived inadequately; Inconvenience is carried, and still is not used for carrying out the teaching aid of this demonstration.Put down in writing the employing material different in the teaching material of primary school senior class first volume Unit the 3rd (marvellous sound kingdom), produced different musical instruments, but used them to play, very inconvenient, be not easy into very much accent.How producing a not only convenient performance but also become accent easily, can also make the acoustics teaching aid of tone and vibration frequency relation simultaneously to the student clear, is the improved basic ideas of the utility model.
Summary of the invention
To the problem that above-mentioned prior art exists, the utility model purpose is to provide a kind of not only convenient performance but also becomes to transfer easily, can also make the tone and the vibration frequency demonstration device of tone and vibration frequency relation simultaneously to the student clear.
The technical scheme of the utility model is: a kind of tone and vibration frequency demonstration device, comprise base, and be fixed with support on the said base; Said support is made up of a horizon bar and two vertical rods that are parallel to each other; The two ends of said horizon bar link to each other with the top of two vertical rods respectively, and through the flexible steel disc of screw retention, said horizon bar below is provided with rotor wheel on the said horizon bar; Rotor wheel is between two vertical rods; And be rotationally connected through rotation axis and the vertical rod that passes the rotor wheel center, an end of rotation axis is connected with crank, and rotor wheel is provided with the obstacle screw corresponding with elastic steel sheet.
As preferably, said rotor wheel is made up of a plurality of circle wheels, and the diameter of circle wheel reduces successively, respectively is provided with an obstacle screw on each circle wheel, above each circle wheel an elastic steel sheet corresponding with the obstacle screw is arranged respectively.
The beneficial effect of the utility model is: the utility model has been used wheel shaft and lever principle and object vibration pronunciation principle; Through rotating the rotation of crank drive rotor wheel; Obstacle screw on the rotor wheel is stirred elastic steel sheet and is sounded, and convenient the performance becomes accent, the vibrational state when it can show the elastic steel sheet sounding intuitively simultaneously again easily; Thereby play good demonstration effect; Therefore students understand is more prone to, learning initiative improves, and then has reached the purpose of improving the quality of teaching.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, base; 2, vertical rod; 3, horizon bar; 4, screw; 5, elastic steel sheet; 6, rotor wheel; 7, rotation axis; 8, crank; 9, obstacle screw.
Embodiment
As a kind of embodiment of the utility model, as shown in Figure 1, a kind of tone and vibration frequency demonstration device; Comprise base 1, be fixed with support on the said base 1, said support is made up of a horizon bar 3 and two vertical rods that are parallel to each other 2; The two ends of said horizon bar 3 link to each other with the top of two vertical rods 2 respectively, are fixed with elastic steel sheet 5 through screw 4 on the said horizon bar 3, and said horizon bar 3 belows are provided with rotor wheel 6; Rotor wheel 6 is between two vertical rods 2, and the rotation axis through passing rotor wheel 6 centers 7 is rotationally connected with vertical rod 2, and an end of rotation axis 7 is connected with crank 8; As preferably, said rotor wheel 6 is made up of a plurality of circle wheels, and the diameter of circle wheel reduces successively; Respectively be provided with an obstacle screw 9 on each circle wheel, respectively there is an elastic steel sheet 5 corresponding with obstacle screw 9 each circle wheel top.
The utility model has been used wheel shaft and lever principle and object vibration pronunciation principle, and through rotating the rotation of crank 8 drive rotor wheels 6, the obstacle screw 9 on the rotor wheel 6 is stirred elastic steel sheet 5 and sounded; The convenient performance becomes accent again easily; Vibrational state when it can show elastic steel sheet 5 sounding intuitively simultaneously, thus play good demonstration effect, therefore students understand is more prone to; Learning initiative improves, and then has reached the purpose of improving the quality of teaching.
Claims (2)
1. tone and vibration frequency demonstration device is characterized in that: comprise base, be fixed with support on the said base; Said support is made up of a horizon bar and two vertical rods that are parallel to each other; The two ends of said horizon bar link to each other with the top of two vertical rods respectively, and through the flexible steel disc of screw retention, said horizon bar below is provided with rotor wheel on the said horizon bar; Rotor wheel is between two vertical rods; And be rotationally connected through rotation axis and the vertical rod that passes the rotor wheel center, an end of rotation axis is connected with crank, and rotor wheel is provided with the obstacle screw corresponding with elastic steel sheet.
2. tone according to claim 1 and vibration frequency demonstration device; It is characterized in that: said rotor wheel is made up of a plurality of circle wheels; The diameter of circle wheel reduces successively, respectively is provided with an obstacle screw on each circle wheel, and respectively there is an elastic steel sheet corresponding with the obstacle screw each circle wheel top.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011204511440U CN202394425U (en) | 2011-11-15 | 2011-11-15 | Tone and vibration frequency demonstration device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011204511440U CN202394425U (en) | 2011-11-15 | 2011-11-15 | Tone and vibration frequency demonstration device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202394425U true CN202394425U (en) | 2012-08-22 |
Family
ID=46669332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011204511440U Expired - Fee Related CN202394425U (en) | 2011-11-15 | 2011-11-15 | Tone and vibration frequency demonstration device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202394425U (en) |
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2011
- 2011-11-15 CN CN2011204511440U patent/CN202394425U/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: 20120822 Termination date: 20121115 |