CN208569949U - Dotted timer vibrates imaging demonstration instrument - Google Patents
Dotted timer vibrates imaging demonstration instrument Download PDFInfo
- Publication number
- CN208569949U CN208569949U CN201820107185.XU CN201820107185U CN208569949U CN 208569949 U CN208569949 U CN 208569949U CN 201820107185 U CN201820107185 U CN 201820107185U CN 208569949 U CN208569949 U CN 208569949U
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- China
- Prior art keywords
- vertical bar
- dotted timer
- motor
- pedestal
- vibrates
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Abstract
A kind of dotted timer vibration imaging demonstration instrument, one end is provided with dotted timer on pedestal, the other end of pedestal is provided with the second vertical bar, platform is provided on second vertical bar, motor is provided on platform, the output shaft of motor is connected with rotating mirror, motor is electrically connected with student power source, the dotted timer side opposite with rotating mirror is provided with plane mirror, sliding rail is provided between dotted timer and the second vertical bar on pedestal, the first vertical bar is provided on sliding rail, laser emitter is arranged on the first vertical bar, is provided with optical screen on the right side of pedestal upper mounting plate；The utility model structure is simple, sound reception is more preferable and can obviously observe that dotted timer vibrates generated curve image, improves demonstrating effect, can promote the use of teaching demonstration field.
Description
Technical field
The utility model belongs to teaching aid technical field, and in particular to vibrates image-forming demonstration to a kind of dotted timer
Instrument.
Background technique
Middle School Physics learn during the generation of demonstrating sound and propagation, with an important tuning fork vibration demonstration
Experiment makes tuning fork vibration generate sound by tapping tuning fork.The sounding of tuning fork can easily hear, but due to sound
The Oscillation Amplitude of fork is smaller, what the vibration of tuning fork did not observed almost, so that the effect of teaching demonstration is poor.In study simple harmonic quantity
When moving image, the method now commonly with digital camera and computer drawing simple harmonic motion image is inconvenient, and
Student cannot be allowed intuitively to observe and draw its displacement-temporal image process.Meanwhile to oscillography when learning oscillograph
The change of the Signal Regulation and signal source of the transverse and longitudinal axis of device is easy to obscure.
Summary of the invention
The technical problem to be solved by the utility model is to overcome the shortcomings of above-mentioned apparatus, provide it is a kind of design rationally,
Structure is simple, sound reception is more preferable and can obviously observe that dotted timer vibrates generated curve image, improves and drill
Show the dotted timer vibration imaging demonstration instrument of effect.
Solve above-mentioned technical problem the technical solution adopted is that: one end is provided with dotted timer on pedestal, pedestal
The other end is provided with the second vertical bar, and platform is provided on the second vertical bar, and motor, the output shaft of motor and rotation are provided on platform
Reflecting mirror is connected, and motor is electrically connected with student power source, and the dotted timer side opposite with rotating mirror is provided with plane
Reflecting mirror is provided with sliding rail on pedestal, the first vertical bar, Laser emission is provided on sliding rail between dotted timer and the second vertical bar
Device is arranged on the first vertical bar, is provided with optical screen on the right side of pedestal upper mounting plate.
The optical screen of the utility model is using the center of the first vertical bar as the semi-surface in the center of circle.
The podium level of the utility model is adjustable to be arranged on the second vertical bar.
The laser transmitter height of the utility model is adjustable to be arranged on the second vertical bar.
The motor of the utility model is direct current generator.
The dotted timer lower part of the utility model is provided with resonant tank.
The utility model has the advantage that compared with the prior art
1, the utility model is designed using the principle of reflection and visual persistence phenomenon of light, dotted timer work students' skill
It hears sound caused by dotted timer vibration, and can clearly observe song caused by dotted timer vibration
Line image greatly improves demonstrating effect, is conducive to the promotion of teaching.
2, the vibration amplitude of dotted timer immobilizes, and adjustable vibration frequency, compared to tuning fork vibration amplitude
Smaller and smaller effect of covering up is more stable, becomes apparent from intuitive.
3, the voltage output for changing student power source obtains different demonstrating effects to change the revolving speed of motor.
4, sliding rail is set, can be moved back and forth on pedestal, thus change the position of laser emitter, pair of analogy oscillograph
The adjusting of transverse and longitudinal axis, so that the adjusting of the utility model light is more flexible, teaching purposes is more extensive.
The utility model structure is simple, sound reception is more preferable and can obviously observe that dotted timer vibration is produced
Raw curve image improves demonstrating effect, can promote the use of teaching demonstration field.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
1, dotted timer；2, plane mirror；3, resonant tank；4, sliding rail；5, laser emitter；6, the first vertical bar；7,
Second vertical bar；8, platform；9, motor；10, rotating mirror；11, optical screen；12, pedestal.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and examples, but the utility model is not limited to this
A little embodiments.
Embodiment 1
In Fig. 1, the utility model dotted timer vibrates imaging demonstration instrument, base of the pedestal 12 as entire imager
Plinth, one end is placed with dotted timer 1 on pedestal 12, and further, dotted timer 1 can be placed on resonant tank 3, so that
The vibration sounding effect of dotted timer 1 is enhanced, and the other end of pedestal 12 is equipped with the second vertical bar 7, is pacified on the second vertical bar 7
Equipped with platform 8, the platform 8 of the present embodiment is height-adjustable to be mounted on the second vertical bar 7, and motor 9 is placed on platform 8, is
Save the cost and mitigate weight, the motor 9 of the utility model uses direct current generator, the output shaft and rotating mirror of motor 9
10 are connected, and to realize that rotating mirror 10 rotates, motor 9 is electrically connected with student power source, and student power source mentions for the utility model
For power, change the voltage output of student power source, to change the revolving speed of motor 9.
The side opposite with rotating mirror 10 of dotted timer 1 is equipped with plane mirror 2, resonant tank 3 on pedestal 12
And second be equipped with sliding rail 4 between vertical bar 7, and sliding rail 4 can move back and forth along pedestal 12, the first vertical bar 6 is installed on sliding rail 4,
Laser emitter 5 is height-adjustable to be mounted on the first vertical bar 6, and sliding rail 4, which moves back and forth, drives laser emitter 5 to move back
It is dynamic, to adjust the light of the transmitting of laser emitter 5, can be reflected on rotating mirror 10 by plane mirror 2,
The right side of 12 upper mounting plate 8 of pedestal is equipped with optical screen 11, and the optical screen 11 of the present embodiment is half using the center of the first vertical bar 6 as the center of circle
Curved surface, the light after the reflection of 10 receiving plane reflecting mirror 2 of rotating mirror carry out secondary reflection again, and optical screen 11 receives rotating mirror
Light after 10 reflections, is shown, optical screen 11 is installed by mounting rack.
The working principle of the utility model is as follows:
1, after the demonstrator for assembling the utility model, external power supply is accessed, opens student power source, adjusts turning for motor 9
Speed.
2, determine that plane mirror 2 in the side of dotted timer 1, adjusts the vertical height and level of laser emitter 5
Distance is to the centre that can be mapped to plane mirror 2 on dotted timer 1.
3, the height for adjusting 8 center of rotating mirror can receive the light of the reflection of plane mirror 2.
4, luminous point of the laser emitter 5 after the reflection of plane mirror 2 is found with blank sheet of paper, according to deflection of optical point Plane of rotation
The direction of reflecting mirror 2, opposite direction slowly rotate dotted timer 1, until reflection light can shine on rotating mirror 10, due to
The reason of persistence of vision, can see feux rouges scanning ray on optical screen 11.
5, dotted timer 1 is opened, the rattle of dotted timer 1 can be heard at this time, can be observed on optical screen 11
Generated curve image is vibrated to dotted timer 1.
6, shifting sledge 4 adjust light, observe again to change the position of laser emitter 5, or change optical screen
11 position apart from rotating mirror 10 is observed.
Claims (6)
1. a kind of dotted timer vibrates imaging demonstration instrument, it is characterised in that: one end is provided with dotted timer, bottom on pedestal
The other end of seat is provided with the second vertical bar, and platform is provided on the second vertical bar, is provided with motor on platform, the output shaft of motor with
Rotating mirror is connected, and motor is electrically connected with student power source, and the dotted timer side opposite with rotating mirror is provided with
Plane mirror is provided with sliding rail on pedestal, the first vertical bar, laser is provided on sliding rail between dotted timer and the second vertical bar
Transmitter is arranged on the first vertical bar, is provided with optical screen on the right side of pedestal upper mounting plate.
2. dotted timer according to claim 1 vibrates imaging demonstration instrument, it is characterised in that: the optical screen is with the
The center of one vertical bar is the semi-surface in the center of circle.
3. dotted timer according to claim 1 vibrates imaging demonstration instrument, it is characterised in that: the podium level can
The setting of adjusting is on the second vertical bar.
4. dotted timer according to claim 1 vibrates imaging demonstration instrument, it is characterised in that: the laser emitter
Height-adjustable setting is on the second vertical bar.
5. dotted timer according to claim 1 vibrates imaging demonstration instrument, it is characterised in that: the motor is direct current
Motor.
6. dotted timer according to claim 1 vibrates imaging demonstration instrument, it is characterised in that: the dotted timer
Lower part is provided with resonant tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820107185.XU CN208569949U (en) | 2018-01-22 | 2018-01-22 | Dotted timer vibrates imaging demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820107185.XU CN208569949U (en) | 2018-01-22 | 2018-01-22 | Dotted timer vibrates imaging demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208569949U true CN208569949U (en) | 2019-03-01 |
Family
ID=65452254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820107185.XU Expired - Fee Related CN208569949U (en) | 2018-01-22 | 2018-01-22 | Dotted timer vibrates imaging demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208569949U (en) |
-
2018
- 2018-01-22 CN CN201820107185.XU patent/CN208569949U/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 |
Granted publication date: 20190301 Termination date: 20220122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |