CN2771953Y - Experimental instrument for demonstrating magnetic strength - Google Patents
Experimental instrument for demonstrating magnetic strength Download PDFInfo
- Publication number
- CN2771953Y CN2771953Y CN 200520012106 CN200520012106U CN2771953Y CN 2771953 Y CN2771953 Y CN 2771953Y CN 200520012106 CN200520012106 CN 200520012106 CN 200520012106 U CN200520012106 U CN 200520012106U CN 2771953 Y CN2771953 Y CN 2771953Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- hyaloid
- magnetic strength
- permanent magnet
- magnetism
- 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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- Magnetic Treatment Devices (AREA)
Abstract
The utility model discloses an experimental instrument for demonstrating magnetic strength, and the experimental instrument is that the upper part of a frame is provided with a hyaloid pipe. The inner of the pipe is provided with a permanent magnet whose size is appreciably less than the inner size of the pipe, and the lower part of the frame is provided with a coil connected with the power supply which has the same axis core with the hyaloid pipe. The hyaloid pipe is marked with scale marks from bottom to top, which are used to display the magnetic strength or the relative change quantity clearly. For the reasons that the experimental instrument primarily utilizes the principle that the same magnetism can repulse mutually, and a magnetic field which the same magnetism repulse mutually generates at the lower part of the permanent magnet. The permanent magnetism block can be limited by the hyaloid pipe wall, which can prevent the permanent magnetism block turning round and thus the repelling force of the magnetism and the gravitational equilibrium of the permanent magnetism block can be stably positioned in the hyaloid pipe with raising. Students can clearly and intuitionally observe the change of the magnetic strength, through the observation for the raising height of the permanent magnet. The utility model has advantages of reasonable structure, clear and intuitional magnetic strength demonstration and favorable demonstration effect.
Description
Technical field
The utility model relates to a kind of instruments used for education, especially a kind of instruments used for education of demonstrating magnetic intensity.
Background technology
Influencing the experimental demonstration of the physical element of magnetic intensity variation, is the emphasis in the physics teaching in secondary school, king's sign indicating number computer company software center of difficult point.Existing magnetic intensity instruments used for education are at one end to hang fixing extension spring lower end to be provided with iron block, and below iron block or be provided with the coil of a hollow on every side, coil and power supply join.During demonstration, coil electricity produces magnetic field, attracts each other after the iron block magnetization, during to magnetic force and spring tension balance, shows the intensity of magnetic from the residing relative position of iron block.Therefore, it is clear inadequately to exist demonstration, and its result is subject to the influence of factors such as the initial relative position, the performance of spring own of iron block and coil.
Summary of the invention
The purpose of this utility model provides a kind of rational in infrastructure, can clear, directly perceived, accurately demonstrate the experiment instrument of magnetic intensity.
The purpose of this utility model is achieved in that and vertically is provided with transparent tube that above support body pipe is built-in with the permanent magnet that is slightly less than its inside dimension, is provided with the coil that links to each other with power supply with the coaxial heart of transparent tube below support body.The xsect of wherein said transparent tube can be circular or square, rectangle, and the gap between described permanent magnet and the transparent tube must not be greater than permanent magnet and thickness.Be marked with from bottom to top scale mark in described transparent tube, to show magnetic intensity or relative variation clearly.Described coil can be some groups of independently coils, also can be to be provided with the tap that several can make its number of turn have level to change by integral multiple in a coil.By there being level to change the number of turn of coil or the output voltage values of direct supply, change and show the variation of magnetic intensity.
Because this experiment instrument mainly is a principle of utilizing the magnetic same sex to repel each other, below permanent magnet, produce the magnetic field that the same sex is repelled each other, and rely on transparent tube wall to limit permanent magnets and prevent the upset of permanent magnets, make it the mutual expelling force of magnetic and stable the soaring of gravitational equilibrium of permanent magnets and be in the transparent tube.The student can observe by height (permanent magnet bottom surface scale value of living in) that permanent magnet is soared, intuitively, clearly observe the variation of magnetic intensity, and with relevant each physical parameter such as coil turn, strength of current between relation.Therefore, have rational in infrastructurely, magnetic intensity demonstration is clear, directly perceived, the advantage of good demonstration effect.
Description of drawings
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing
Fig. 1 structural representation of the present utility model
Among the figure: 1, transparent tube 2, scale clue 3, permanent magnet 4, support body 5, coil 6, power supply
Embodiment
On wooden support body 4, be covered with three-ply board, the top of its central authorities vertically is fixed with organic glass transparent tube 1, wall is marked with scale mark 2 from bottom to top, and pipe is built-in with the permanent magnet 3 that is slightly less than its inside dimension, is provided with the coil 5 that links to each other with power supply 6 with the transparent tube concentric below support body 4 panels.Described coil 5 numbers of turn are totally 600 circles, and it makes coil turn variation capable of being combined at interval in 100 circles, 200 circle place taps.
When in teaching, demonstrating, only need to feed the coil of certain known number of turn by certain voltage, the magnetic intensity that this coil produced, the height of the scale mark of living in that can be soared by the permanent magnet 3 that the same sex is repelled each other is demonstrated intuitively.
Claims (2)
1, a kind of demonstration magnetic intensity experiment instrument, include support body and coil and power supply provided thereon, it is characterized in that vertically being provided with transparent tube above support body, pipe is built-in with the permanent magnet that is slightly less than its inside dimension, is provided with the coil that links to each other with power supply with the coaxial heart of transparent tube below support body.
2, magnetic intensity experiment instrument according to claim 1 is characterized in that being marked with from bottom to top scale mark in described transparent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520012106 CN2771953Y (en) | 2005-03-23 | 2005-03-23 | Experimental instrument for demonstrating magnetic strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520012106 CN2771953Y (en) | 2005-03-23 | 2005-03-23 | Experimental instrument for demonstrating magnetic strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2771953Y true CN2771953Y (en) | 2006-04-12 |
Family
ID=36705743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520012106 Expired - Fee Related CN2771953Y (en) | 2005-03-23 | 2005-03-23 | Experimental instrument for demonstrating magnetic strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2771953Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023749A (en) * | 2016-07-11 | 2016-10-12 | 齐治平 | Magnetic experiment device |
| CN115816022A (en) * | 2023-02-20 | 2023-03-21 | 烟台润蚨祥油封有限公司 | Automobile piston rod oil seal assembling mechanism and working method thereof |
-
2005
- 2005-03-23 CN CN 200520012106 patent/CN2771953Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023749A (en) * | 2016-07-11 | 2016-10-12 | 齐治平 | Magnetic experiment device |
| CN115816022A (en) * | 2023-02-20 | 2023-03-21 | 烟台润蚨祥油封有限公司 | Automobile piston rod oil seal assembling mechanism and working method thereof |
| CN115816022B (en) * | 2023-02-20 | 2023-04-25 | 烟台润蚨祥油封有限公司 | Automobile piston rod oil seal assembly mechanism and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |