CN201222314Y - Double-spring type ultra-agravity demonstration instrument - Google Patents
Double-spring type ultra-agravity demonstration instrument Download PDFInfo
- Publication number
- CN201222314Y CN201222314Y CNU2008200060375U CN200820006037U CN201222314Y CN 201222314 Y CN201222314 Y CN 201222314Y CN U2008200060375 U CNU2008200060375 U CN U2008200060375U CN 200820006037 U CN200820006037 U CN 200820006037U CN 201222314 Y CN201222314 Y CN 201222314Y
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- China
- Prior art keywords
- iron block
- square iron
- normally
- open switch
- normal open
- 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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- Electrically Operated Instructional Devices (AREA)
Abstract
The utility model relates to an educational apparatus, in particular to a double-spring super loss weight demonstration instrument for physical experiment in middle schools. The double-spring super loss weight demonstration instrument mainly comprises a supporting stand, springs, a square iron block, a normally-opened switch, a luminescent diode and the like. The square iron block can contact with a normally-opened switch 7 to lead the normally-opened switch 7 to be closed under the state of overweight, and a red luminescent diode can shine and the moment. The square iron block can contact with a normally-opened switch 6 to lead the normally-opened switch 6 to be closed under the state of weight loss, and a green luminescent diode can shine and the moment. And the phenomenon of overweight and weight loss can be simply watched from the luminous conditions of the luminescent diode. The utility model has the advantages of simple operation and obvious experimental phenomenon.
Description
Technical field
The utility model relates to a kind of instruments used for education, the super weightless demonstrator of the dual spring type that particularly a kind of middle school physical experiment is used.
Background technology
Super weightless test, traditional way is to hang a weight to demonstrate on spring balance, but spring balance is in constant motion during owing to experiment, and the super weightless time is very short again, so the super weightlessness of observation of students will feel very difficult, the pointer of adding spring balance is little, and the student of back has not just seen the motion conditions of Chu Zhizhen at all.
Summary of the invention
The purpose of this utility model provides a kind of when the super weightless test of demonstration, can allow the student be very easy to observe experimental phenomena, and operate experimental provision very easily.
The utility model is achieved like this: it mainly is made of support, spring, square iron block, normal open switch, light emitting diode etc.Under overweight state, square iron block can be met normal open switch K
2Make its closure, this moment, red light emitting diodes will be luminous.Under state of weightlessness, square iron block can be met normal open switch K
1Make its closure, this moment, green LED will be luminous.So just can in the middle of the luminous situation of light emitting diode, observe super weightlessness easily.The utlity model has easy and simple to handlely, experimental phenomena is obvious, and the student is advantage such as observation easily.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Figure a is a structural representation of the present utility model.
Figure b is a circuit connection diagram of the present utility model.
Shown in the figure 1 is red light emitting diodes V
2, the 2nd, spring, the 3rd, support, the 4th, green LED V
1, the 5th, square iron block, the 6th, normal open switch K
1, the 7th, normal open switch K
2
Embodiment
In figure a, support 3 can be made with timber or plastics, fixes green LED 4 and red light emitting diodes 1 on support, and power supply can be in series with two joint button cells, and it is fixed on the back side of support.Vertically square iron block 5 is hung on the support with two springs up and down, be provided with normal open switch 6 above square iron block, be provided with normal open switch 7 below square iron block, normal open switch is made up of two copper sheets insulated from each other.According to the circuit diagram shown in the figure b, normal open switch 6 is connected with power supply with green LED 4 series connection more again, again normal open switch 7 is connected with power supply with red light emitting diodes 1 series connection again.During demonstration: as the utility model when vertical direction is upwards done accelerated motion, overweight phenomenon will appear, this moment red light emitting diodes will be luminous.Follow the utility model when vertical direction is upwards done retarded motion, weightlessness will occur, this moment, green LED will be luminous.
Claims (2)
1, the super weightless demonstrator of a kind of dual spring type, it is mainly by spring (2), support (3), square iron block (5), normal open switch k
1(6), normal open switch k
2(7) constitute, it is characterized in that: with about two springs vertically square iron block is hung on the support, above square iron block, be provided with normal open switch k
1, below square iron block, be provided with normal open switch k
2
2, the super weightless demonstrator of dual spring type according to claim 1 is characterized in that; Normal open switch (6) is connected with power supply with green LED (4) series connection again, and normal open switch (7) is connected with power supply with red light emitting diodes (1) series connection again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200060375U CN201222314Y (en) | 2008-01-27 | 2008-01-27 | Double-spring type ultra-agravity demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200060375U CN201222314Y (en) | 2008-01-27 | 2008-01-27 | Double-spring type ultra-agravity demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201222314Y true CN201222314Y (en) | 2009-04-15 |
Family
ID=40575817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200060375U Expired - Fee Related CN201222314Y (en) | 2008-01-27 | 2008-01-27 | Double-spring type ultra-agravity demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201222314Y (en) |
-
2008
- 2008-01-27 CN CNU2008200060375U patent/CN201222314Y/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 Termination date: 20100301 |