CN2173439Y - Straight line current magnetic field display device - Google Patents
Straight line current magnetic field display device Download PDFInfo
- Publication number
- CN2173439Y CN2173439Y CN 93244596 CN93244596U CN2173439Y CN 2173439 Y CN2173439 Y CN 2173439Y CN 93244596 CN93244596 CN 93244596 CN 93244596 U CN93244596 U CN 93244596U CN 2173439 Y CN2173439 Y CN 2173439Y
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- CN
- China
- Prior art keywords
- magnetic field
- straight line
- box
- conducting wire
- bundling
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- Expired - Fee Related
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Abstract
The utility model discloses a straight line magnetic field display device, which is an experimental apparatus used for the upper-class physics teaching 'current magnetic field '. A bundling coil curl is formed by winding insulated conducting wires, and three surfaces of the coil curl are fixed and sealed in a box body. Two end heads of the bundling coil curl are separately used as binding posts which are fixed on a closing plate of a bottom box, and an exposure bundling conducting wire is perpendicular to the horizontal plane. The utility model penetrates through a cover plate of the bottom box, and the cover plate of the bottom box is arranged on the bottom box and can move up and down along the exposure bundling conducting wire. The straight line magnetic field display device has simple structure and can completely demonstrate the experiment of the pictures (10-17), (10-10) and (10-19) in a textbook and three repeated experiments after the current direction is altered.
Description
The utility model relates to a kind of straight line current magnetic field display instrument, is used for the experimental provision of junior three physics " magnetic field of an electric current " joint teaching, belongs to a kind of magnetic field teaching demonstration apparatus.
At present in 3 years junior middle schools level physical " magnetic field of electric current " joint teaching, teaching for straight line current magnetic field, according to existing instruments used for education, the teacher can only demonstrate the oersted test, exist magnetic field around the proof electrical conductor, and not having a kind of instrument to demonstrate the experiment of figure (10-17), (10-18), (10-19) in the textbook, the repeated experiments behind the change direction of current can only realize teaching purpose by wall chart analysis.The rigid straight line current rule of guiding out on this basis of not obtaining perceptual knowledge the student realizes increasing certain difficulty to this joint teaching purpose undoubtedly.
The purpose of this utility model is to overcome the weak point in the background technology and provides a kind of simple in structure, intuitive is good, can directly guide out the straight line current rule, can help the teacher to finish the straight line current magnetic field display instrument of junior three physics " magnetic field of an electric current " joint teaching effectively.
The purpose of this utility model is achieved in that this display instrument comprises insulated conductor, box body, binding post, insulated conductor turns to the boundling coil, fix and be enclosed in the box body for three of coil, two rear line heads of boundling coil are done binding post respectively and are fixed on the end box wall, appear Bundling conducting wire with vertical with surface level, end lid plate places on the end box, and end lid plate moves up and down along appearing Bundling conducting wire, appears Bundling conducting wire and passes from lid plate center, the end.
The purpose of this utility model can also realize by following technical measures: box body by end box, perpendicular box, top box constitutes and be interconnected.
The utility model is compared background technology and is had the following advantages:
1, simple in structure;
2, help the teacher to finish the teaching of junior three physics " magnetic field of an electric current " joint intuitively, effectively, three revision tests after demonstrating out the experiment of figure (10-17), (10-18), (10-19) in the textbook and changing direction of current, make the student that perceptual knowledge arranged, grasp the straight line current rule easily, learn the content of " magnetic field of an electric current " joint well.
The drawing of accompanying drawing is described as follows:
Accompanying drawing is a structural representation of the present utility model.
Among the figure: appear Bundling conducting wire (1), top box (2), top section Bundling conducting wire (3), perpendicular box (4), perpendicular section Bundling conducting wire (5), end box (6), end section Bundling conducting wire (7), end lid plate (8), binding post (9), (10).
Embodiment describes the utility model in detail below in conjunction with (accompanying drawing): as shown in the figure: turn to rectangle (or other shapes with insulated conductor, but guarantee that the Bundling conducting wire that appears is vertical with surface level), fix and be enclosed in the box body for three of coil, its end section Bundling conducting wire (7) places in the end box (6), perpendicular section Bundling conducting wire (5) places in the perpendicular box (4), top section Bundling conducting wire (3) places in the top box (2), top box is long narrow, go out top box (2) to the Bundling conducting wire of end box for appearing Bundling conducting wire (1), it is vertical with surface level, end lid plate (8) places on the end box (6), appearing boundling line (1) passes from end lid plate (8) center, appearing Bundling conducting wire (1) seals with plastic tube, end lid plate (8) can move up and down along appearing collection lead (1), and the boundling coil is reserved two the end of a thread and done binding post (9) in the bottom, (10) and be fixed on anterior or two lateral box walls of end box (6).Experimental power supply in view of teaching usefulness can only provide low pressure and limit electric current, so the utility model adopts Bundling conducting wire, weak current on variable each bar lead is unidirectional tetanizing current, boundling strength of current equals each bar current in wire intensity sum, and strength of current is big more, and magnetic field is strong more.During experiment, straight line current magnetic field display instrument is connected with slide rheostat, amp gauge, be connected on the experimental power supply, energized just can be done by the requirement in the book and test.Sprinkle iron filings on end lid plate, to lead energising, when gently shaking cover plate, iron filings are lined up a concentric garden of enclosing on every side appearing Bundling conducting wire (1); If put several small magnetic needles on end lid plate, to the lead energising, small magnetic needle can overcome the influence that falls on the ground magnetic field, turns to automatically, demonstrates the direction of straight line current surrounding magnetic field field, and the direction of small magnetic needle arctic indication is exactly the direction in magnetic field, place, small magnetic needle place.When the direction of current that appears Bundling conducting wire (1) makes progress, the small magnetic needle arctic is oriented to counterclockwise, be straight line current surrounding magnetic field direction this moment, when the direction of current that appears Bundling conducting wire (1) is downward, the small magnetic needle arctic is oriented to clockwise direction, promptly is straight line current surrounding magnetic field direction under this kind situation.Lid plate of the mobile end (8) still can be done above-mentioned experiment, draws same conclusion, thereby guides out the straight line current rule.
Claims (2)
1, a kind of straight line current magnetic field display instrument, comprise lead, box body, binding post, it is characterized in that insulated conductor turns to the boundling coil, fix and be enclosed in the box body for three of coil, two terminations of boundling coil are done binding post respectively and are fixed on the end box wall, it is vertical with surface level to appear Bundling conducting wire, and end lid plate places on the end box, appears Bundling conducting wire and passes from the bottom plate center.
2, straight line current according to claim 1 magnetic field display instrument, it is characterized in that box body by end box, perpendicular box, top box constitutes and be interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244596 CN2173439Y (en) | 1993-11-18 | 1993-11-18 | Straight line current magnetic field display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244596 CN2173439Y (en) | 1993-11-18 | 1993-11-18 | Straight line current magnetic field display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2173439Y true CN2173439Y (en) | 1994-08-03 |
Family
ID=33817768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93244596 Expired - Fee Related CN2173439Y (en) | 1993-11-18 | 1993-11-18 | Straight line current magnetic field display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2173439Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464460A (en) * | 2013-09-17 | 2015-03-25 | 余姚市科仪光仪有限公司 | Current magnetic field demonstrating instrument |
| CN108109493A (en) * | 2017-12-30 | 2018-06-01 | 南京陶特思软件科技有限公司 | A kind of junior physics electromagnetic experimental device for electricity field |
-
1993
- 1993-11-18 CN CN 93244596 patent/CN2173439Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464460A (en) * | 2013-09-17 | 2015-03-25 | 余姚市科仪光仪有限公司 | Current magnetic field demonstrating instrument |
| CN108109493A (en) * | 2017-12-30 | 2018-06-01 | 南京陶特思软件科技有限公司 | A kind of junior physics electromagnetic experimental device for electricity field |
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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 |