CN203433709U - Tuning fork vibration demonstrator - Google Patents
Tuning fork vibration demonstrator Download PDFInfo
- Publication number
- CN203433709U CN203433709U CN201320445183.9U CN201320445183U CN203433709U CN 203433709 U CN203433709 U CN 203433709U CN 201320445183 U CN201320445183 U CN 201320445183U CN 203433709 U CN203433709 U CN 203433709U
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- CN
- China
- Prior art keywords
- tuning fork
- light source
- demonstration device
- vibration
- fork vibration
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Abstract
The utility model aims to provide a tuning fork vibration demonstrator. The vibration of a tuning fork is converted into a visible and easily-distinguishable pattern, so as to facilitate students to observe the substance of the vibration. The tuning fork vibration demonstrator comprises a light source, a tuning fork with a reflecting mirror, and a rotary scanning mirror, wherein the rotary scanning mirror comprises a bracket, the bracket is provided with an inclined mirror mounted on a motor, the light emitted from a light source is reflected by the reflecting mirror and then rightly emitted to the inclined mirror of the rotary scanning mirror. If the light reflected by the tuning fork is emitted to the rotary inclined surface of the scanning mirror, and subjected to secondary amplification by the rotary inclined surface and then projected outside, so as to form an elliptic-like closed pattern.
Description
Technical field
The utility model relates to a kind of physics teaching experiment apparatus, relates in particular to a kind of tuning fork vibration and drills device.
Background technology
In order to improve the understanding of student to physical phenomenon, in teaching process, need to use some demonstration equipments.Especially, in the vibration experiment that is difficult for differentiating at naked eyes, in order to make vibration more obvious, we need to adopt special demonstration equipment.Application number is to disclose a kind of demonstration equipment in patent of invention < < novel tuning fork vibration demonstration instrument > > of 201010545451.5, at the sticky gossamery catoptron in the upper end of one of tuning fork, catoptron and tuning fork have pitch angle, fix a semiconductor laser tube on support.Principle of work of the present utility model: on catoptron, the luminous point after reflection is dropped on wall laser.When tuning fork does not vibrate, luminous point is a dot; When tuning fork vibration, due to persistence of vision, luminous point becomes the light beam of a strip.The sound that this instrument sends in the time of not only hearing tuning fork vibration, can also clearly observe the vibration of tuning fork.But because the light beam of strip is still difficult to differentiate in the situation that amplitude is less, such demonstration effect is also bad.
Utility model content
The purpose of this utility model is to provide tuning fork vibration demonstration device, and the vibration of tuning fork is converted into the visible figure of easily differentiating directly perceived, is conducive to observation of students to the essence of vibration.
In order to realize described object, the utility model tuning fork vibration demonstration device, comprise light source and tuning fork, described tuning fork is provided with catoptron, also comprise rotating scan mirror, described rotating scan mirror comprises support, and support is provided with the tilting mirrors being arranged on motor, and the light that light source is launched is just in time transmitted on the tilting mirrors of rotating scan mirror after catoptron reflection.
Preferably, described light source is laser generator, the incident angle of its light sending on catoptron be 30 Du ?45 degree.Because the utility model light path is comparatively complicated, therefore by such position, arrange and can guarantee that light path the least possible in use procedure disturbs, also enough compactness of several parts, avoids taking excessive demonstration place simultaneously.
Preferably, the angle between described tilting mirrors and support place plane be 30 Du ?45 degree.Tilting mirrors obtains mirror angle and has influence on the imaging size in certain distance.By such angle setting, can go out to be of moderate size the distance outer projection of 30 centimetres to be convenient to the image of observation.
Preferably, described tuning fork below is also provided with sympathetic response box.Sympathetic response box can improve the vibrating effect of tuning fork.
Preferably, described sympathetic response box is rectangle hollow tub, and described tuning fork is arranged on center, sympathetic response box top.Such sympathetic response box is simple in structure, easy for installation.
Preferably, described light source, tuning fork and rotating scan mirror are installed on a base plate.It is mobile that such structure is mainly convenient to, can be so that light source, tuning fork and rotating scan mirror be done as a whole carrying, and do not have influence on their mutual alignment.After mobile, just needn't adjust separately like this.
Preferably, described bottom edge is also established a projection blank.Can directly project image onto on blank and observe like this.
By such setting, if when the light that in the utility model, tuning fork reflects is irradiated to the spin canting of scanning mirror, can, via the amplification for the second time of spin canting, be projected away, and be formed a similar oval-shaped closed figure.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the utility model tuning fork vibration demonstration device.
Embodiment
As shown in Figure 1: the utility model tuning fork vibration demonstration device, comprise light source 1 and tuning fork 2, described tuning fork 2 is provided with catoptron 3, also comprise rotating scan mirror, described rotating scan mirror comprises support 4, support 4 is provided with the tilting mirrors 6 being arranged on motor 5, and the light that light source 1 is launched is just in time transmitted on the tilting mirrors 6 of rotating scan mirror after catoptron 3 reflections.Described light source 1 is laser generator, the incident angle of its light sending on catoptron 3 be 30 Du ?45 degree.Angle between described tilting mirrors 6 and support 4 place planes be 30 Du ?45 degree.Described tuning fork 2 belows are also provided with sympathetic response box 7.Described sympathetic response box 7 is rectangle hollow tub, and described tuning fork 2 is arranged on sympathetic response box 7 centers, top.Described light source 1, tuning fork 2 and rotating scan mirror are installed on a base plate.Described bottom edge is also established a projection blank 8.
The tuning fork vibration demonstration device that we take with base is example, first base is put on smooth desktop.Forward, we are positioned at the right side of base top it to sympathetic response box 7 opening surfaces, and the tuning fork 2 that is stained with catoptron 3 is loaded onto.To as the laser generator of light source 1, fix and guarantee that laser can be irradiated on the catoptron 3 of tuning fork 2.
Rotating scan mirror is installed, is guaranteed that tilting mirrors 6 can receive the reflected light that tuning fork 2 upper reflectors 3 reflect.Projection blank 8 is installed the laser that tilting mirrors 6 reflects is finally mapped on projection blank 8, open motor 5, under the static state of tuning fork 2, on projection blank 8, can see the whole oval-shaped pattern that is similar to.
With hand hammer, knock tuning fork 2, under the state of tuning fork 2 vibration soundings, observe the pattern on projection blank 8.
When if the light that tuning fork 2 reflects is irradiated to the tilting mirrors 6 on rotating scan mirror, meeting, via the position of the change throw light of tilting mirrors 6, projects away similar and oval-shaped closed figure of rear formation.The circle that static tuning fork 2 produces is linear ellipse, and the figure that the tuning fork 2 of vibration produces is the ellipse with fluctuation.Contribute to like this student intuitively to observe the form of vibration.Compare with the pattern that in prior art is only straight line, the variation of vibration is more obvious, more can excite student's interest.
The foregoing is only specific embodiment of the utility model, but architectural feature of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification are all encompassed among the scope of the claims of the present utility model.
Claims (7)
1. tuning fork vibration demonstration device, comprise light source (1) and tuning fork (2), described tuning fork (2) is provided with catoptron (3), it is characterized in that, also comprise rotating scan mirror, described rotating scan mirror comprises support (4), and support (4) is provided with the tilting mirrors (6) being arranged on motor (5), and the light that light source (1) is launched is just in time transmitted on the tilting mirrors (6) of rotating scan mirror after catoptron (3) reflection.
2. tuning fork vibration demonstration device according to claim 1, is characterized in that, described light source (1) is laser generator, and the incident angle of its light sending on catoptron (3) is 30 degree-45 degree.
3. tuning fork vibration demonstration device according to claim 1, is characterized in that, the angle between described tilting mirrors (6) and support (4) place plane is 30 degree-45 degree.
4. tuning fork vibration demonstration device according to claim 1, is characterized in that, described tuning fork (2) below is also provided with sympathetic response box (7).
5. tuning fork vibration demonstration device according to claim 4, is characterized in that, described sympathetic response box (7) is rectangle hollow tub, and described tuning fork (2) is arranged on center, sympathetic response box (7) top.
6. tuning fork vibration demonstration device according to claim 1, is characterized in that, described light source (1), tuning fork (2) and rotating scan mirror are installed on a base plate.
7. tuning fork vibration demonstration device according to claim 6, is characterized in that, described bottom edge is also established a projection blank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445183.9U CN203433709U (en) | 2013-07-23 | 2013-07-23 | Tuning fork vibration demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445183.9U CN203433709U (en) | 2013-07-23 | 2013-07-23 | Tuning fork vibration demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433709U true CN203433709U (en) | 2014-02-12 |
Family
ID=50062735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320445183.9U Expired - Fee Related CN203433709U (en) | 2013-07-23 | 2013-07-23 | Tuning fork vibration demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203433709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354051A (en) * | 2013-07-23 | 2013-10-16 | 湖州文思必得科教仪器有限公司 | Demonstration device for tuning fork vibration |
-
2013
- 2013-07-23 CN CN201320445183.9U patent/CN203433709U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354051A (en) * | 2013-07-23 | 2013-10-16 | 湖州文思必得科教仪器有限公司 | Demonstration device for tuning fork vibration |
| WO2015010583A1 (en) * | 2013-07-23 | 2015-01-29 | 湖州文思必得科教仪器有限公司 | Tuning fork vibration demonstrator |
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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: 20140212 Termination date: 20140723 |
|
| EXPY | Termination of patent right or utility model |