CN202871165U - Ampere force demonstration teaching device - Google Patents
Ampere force demonstration teaching device Download PDFInfo
- Publication number
- CN202871165U CN202871165U CN 201220582733 CN201220582733U CN202871165U CN 202871165 U CN202871165 U CN 202871165U CN 201220582733 CN201220582733 CN 201220582733 CN 201220582733 U CN201220582733 U CN 201220582733U CN 202871165 U CN202871165 U CN 202871165U
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- CN
- China
- Prior art keywords
- lead frame
- ampere force
- crossbeam
- pedestal
- lever
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- Expired - Fee Related
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Abstract
The utility model provides an ampere force demonstration teaching device which includes a pedestal and U-shaped magnets arranged on the pedestal. The ampere force demonstration teaching device is characterized in that the U-shaped magnets are sleeved with a lead frame; the lead frame is connected with a crossbeam which is provided with a lever and a pointer via vertical connecting rods; the crossbeam is arranged in a groove which is arranged on the top of a support of the pedestal; a lead of the lead frame is electrically connected with a power supply. The ampere force demonstration teaching device can visually demonstrate the movement of the lead frame in the U-shaped magnets when the device is powered on, and the movement of the lead frame drives the vertical connecting rods, the crossbeam, and the lever and the pointer on the crossbeam to move, and the swing angle of the pointer can be read on a dial. The device proves that after the lead frame is powered on, the ampere force is generated in the U-shaped magnets, and the ampere force is closely related to the current direction and the magnetic field intensity. The students can comprehensively and clearly understand the relations among the ampere force, the current direction and the magnetic field intensity. The ampere force demonstration teaching device can improve the teaching quality, and enables the students to easily grasp the related knowledge.
Description
Technical field
The utility model relates to a kind of instruments used for education, and particularly a kind of ampere force presentation instruments used for education belong to teaching equipment design and manufacturing technology field.
Background technology
High school physics often needs the demonstration by instruments used for education in the time spent of doing of explanation magnetic field to electric current, allows the student that Ampère force is had a comprehensively understanding.Present employed instruments used for education are conductors of placing energising in common U-shaped magnet, and by adjusting the electric current both positive and negative polarity, conductor are moved forward and backward in magnet, thereby show Ampère force.Such instruments used for education can only demonstrate the existence of Ampère force, but can't indicate its size.Make the student still can't understand relation between size of current, magnetic induction and the Ampère force, can not play good demonstration lesson effect.Therefore be necessary prior art is improved.
Summary of the invention
For solving in the existing senior secondary course, when the explanation Ampère force, because can't intuitively demonstrating relation between size of current, magnetic induction and the Ampère force by instruments used for education, thus the problem such as allow that the student beyonds one's depth, and the utility model provides a kind of ampere force presentation instruments used for education.
The utility model is finished by following technical proposal: a kind of ampere force presentation instruments used for education, comprise pedestal, and be located at U-shaped magnet on the pedestal, it is characterized in that cover has lead frame on the U-shaped magnet, lead frame is established lever by on vertical connecting rod and its, the crossbeam of pointer links to each other, crossbeam places in the groove of set top of the trellis on the pedestal, the wire of lead frame is electrically connected with power supply, in order in U-shaped magnet, produce Ampère force after the lead frame energising, thereby make lead frame generation displacement and drive vertical connecting rod, crossbeam and on lever, the beat of pointer is to demonstrate the size of Ampère force.
Open column is established respectively at described crossbeam two ends, open column and the vertical connecting rod that is connected lead frame link to each other, and this vertical connecting rod is hollow stem, so that when being fixed on vertical connecting rod on the crossbeam, make the positive and negative electrode wire of lead frame pass hollow vertical connecting rod and open column and after drawing, link to each other with power supply.
Described crossbeam is provided with through hole, and lever places in the through hole, and the lever two ends are provided with mobile counterweight, in order to make lead frame and lever energy be in the state of vertical equilibrium during no power.
Described pointer is fixed on the end of crossbeam, and matches with facade index dial on being fixed on pedestal, in order to intuitively demonstrate the angle of the beat of pointer, thus the size of explanation Ampère force.
Described support comprises symmetrically arranged two risers, and each riser lower end is fixed on the pedestal, and the upper end connects a cantilever, and the side of cantilever end establishes groove, and groove one side is established binding post, to make things convenient for wire to connect and to fix.
The utlity model has following advantages and effect: adopt such scheme, can be in the energising situation, demonstrate out intuitively the movement of lead frame in U-shaped magnet, and drive vertical connecting rod, crossbeam and on lever, the beat of pointer, thereby read the pendulum angle of pointer at index dial, after having proved the lead frame energising, can in U-shaped magnet, produce Ampère force, and the size of this Ampère force and direction of current, magnetic field intensity are closely related, allow the student clear, understand relation between them all sidedly, to improve the quality of teaching, make the student easily grasp relevant knowledge.Be a desirable physics educational apparatus in fact.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the right view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The ampere force presentation instruments used for education that the utility model provides, comprise pedestal 1, and be located at U-shaped magnet 3 on the pedestal 1, U-shaped magnet 3 is fixed by the block 4,2 of the left and right sides, cover has lead frame 16 on the U-shaped magnet 3, the vertical connecting rod 15 of lead frame 16 by both sides before and after it with its on establish lever 13, pointer 10 crossbeam 11 link to each other, crossbeam 11 lower ends place in the groove 14 of set top of the trellis on the pedestal 1, the wire of lead frame 16 is electrically connected with power supply; Open column 12 is established respectively in described crossbeam 11 rear and front ends, open column 12 links to each other with the vertical connecting rod 15 that is connected lead frame 16, this vertical connecting rod 15 is hollow stem, so that when being fixed on vertical connecting rod 15 on the crossbeam 11, make the positive and negative electrode wire of lead frame 16 pass the hollow position of vertical connecting rod 15 and open column 12 and after drawing, link to each other with power supply; Described crossbeam 11 is provided with through hole, and lever 13 places in the through hole, and lever 13 two ends are provided with mobile counterweight 8, in order to make lead frame 16 and lever 13 can be in the state of vertical equilibrium during no power; Described pointer 10 is fixed on the rearward end of crossbeam 11, and matches with facade index dial 9 on being fixed on pedestal 1, in order to intuitively demonstrate the angle that pointer 10 swings, thus the size of explanation Ampère force; Described support comprises symmetrically arranged two risers 5, and each riser lower end is fixed on the pedestal 1, and the upper end connects a cantilever 6, and groove 14 is established in the top of cantilever 6 ends, establishes binding post 7 on the cantilever 6 in groove 14 left sides, to make things convenient for wire to connect and to fix.
During work, after giving lead frame 16 energisings, at U-shaped magnet 3 interior generation Ampère forces, thereby make lead frame 16 produce displacements and drive vertical connecting rod 15, crossbeam 11 and on lever 13, pointer 10 swing, with the swinging of display pointer 10, thereby intuitively reflect the size of Ampère force.
Claims (5)
1. ampere force presentation instruments used for education, comprise pedestal, and be located at U-shaped magnet on the pedestal, it is characterized in that cover has lead frame on the U-shaped magnet, lead frame by vertical connecting rod with its on establish lever, pointer crossbeam link to each other, crossbeam places in the groove of set top of the trellis on the pedestal, and the wire of lead frame is electrically connected with power supply.
2. ampere force presentation instruments used for education according to claim 1 is characterized in that described crossbeam two ends establish respectively open column, and open column links to each other with the vertical connecting rod that is connected lead frame, and this vertical connecting rod is hollow stem.
3. ampere force presentation instruments used for education according to claim 1 is characterized in that described crossbeam is provided with through hole, and lever places in the through hole, and the lever two ends are provided with mobile counterweight.
4. ampere force presentation instruments used for education according to claim 1 is characterized in that described pointer is fixed on the end of crossbeam, and match with facade index dial on being fixed on pedestal.
5. ampere force presentation instruments used for education according to claim 1 is characterized in that described support comprises symmetrically arranged two risers, and each riser lower end is fixed on the pedestal, and the upper end connects a cantilever, and groove is established in the top of cantilever end, and groove one side is established binding post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220582733 CN202871165U (en) | 2012-11-07 | 2012-11-07 | Ampere force demonstration teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220582733 CN202871165U (en) | 2012-11-07 | 2012-11-07 | Ampere force demonstration teaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871165U true CN202871165U (en) | 2013-04-10 |
Family
ID=48037863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220582733 Expired - Fee Related CN202871165U (en) | 2012-11-07 | 2012-11-07 | Ampere force demonstration teaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871165U (en) |
-
2012
- 2012-11-07 CN CN 201220582733 patent/CN202871165U/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: 20130410 Termination date: 20131107 |