CN202093718U - Solenoid magnetism intensity demonstration device - Google Patents
Solenoid magnetism intensity demonstration device Download PDFInfo
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- CN202093718U CN202093718U CN2011201558322U CN201120155832U CN202093718U CN 202093718 U CN202093718 U CN 202093718U CN 2011201558322 U CN2011201558322 U CN 2011201558322U CN 201120155832 U CN201120155832 U CN 201120155832U CN 202093718 U CN202093718 U CN 202093718U
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- solenoid
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Abstract
The embodiment of the utility model provides a solenoid magnetism intensity demonstration device which comprises an indicator (8), a solenoid (3), a spring (5), a soft magnet (6) and a support plate (14); the indicator (8) is articulated on the support plate (14) by a rotation axis (7), the soft magnet (6) is fixed at the lower end of the indicator (8), one end of the spring (5) is fixed at the lower end of the soft magnet (6), and the other end of the spring (5) is fixed on the support plate (14); and the solenoid (3) is arranged at one side of the soft magnet (6), and at least one tap (2) is arranged in the coil of the solenoid (3). The solenoid magnetism intensity demonstration device facilitates demonstration of solenoid magnetism intensity, intuitive for the method, clear in physical meaning, and good in effect.
Description
Technical field
The utility model relates to a kind of physics facility, relates in particular to a kind of apparatus for demonstrating that is used to demonstrate solenoid magnetic strong or weak relation.
Background technology
In junior middle school physics teaching, propose energization solenoid and be magnetic.The magnetic of energization solenoid has following character: coil turn increases on the energization solenoid, and magnetic strengthens; Electric current increases in the energising solenoid coil, and magnetic strengthens; Insert iron core in energization solenoid, magnetic strengthens greatly.
In the teaching, the teacher does not generally demonstrate it now; The teacher who has has made simple device by oneself, in practical operation, all can't reflect the variation of magnetic objectively, often is difficult to receive Expected Results, and particularly when the energization solenoid magnetic power of iron core was not inserted in demonstration, effect was very not obvious.
Summary of the invention
The purpose of this utility model provides the strong and weak apparatus for demonstrating of a kind of solenoid magnetic, is convenient to carry out in the classroom demonstration of solenoid magnetic power, and method is directly perceived, and the physical significance clear and definite is effective.
The purpose of this utility model is achieved through the following technical solutions:
The strong and weak apparatus for demonstrating of a kind of solenoid magnetic comprises: pointer 8, solenoid 3, spring 5, soft magnetic bodies 6 and supporting plate 14;
Solenoid 3 is located at a side of soft magnetic bodies 6, is provided with at least one tap 2 in the coil of solenoid 3.
Supporting plate 14 places of described pointer 8 tops are provided with index dial 1.
The inside of described solenoid 3 is provided with removable iron core 4.
1/5 to 1/3 place apart from pointer 8 lower ends is located in rotating shaft 7 on the described pointer 8.
Rotating shaft 7 on the described pointer 8 is located at apart from 1/4 place of pointer 8 lower ends.
The strong and weak apparatus for demonstrating of described solenoid magnetic also comprises balanced weight 9; Described balanced weight 9 is placed on the pointer 8 of pointer 8 and the pin joint top of rotating shaft 7.
The technical scheme that provides by above-mentioned the utility model as can be seen, the strong and weak apparatus for demonstrating of a kind of solenoid magnetic that the utility model embodiment provides is convenient to carry out in the classroom demonstration of solenoid magnetic power, method is directly perceived, the physical significance clear and definite is effective.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The structural representation of the strong and weak apparatus for demonstrating of the solenoid magnetic that Fig. 1 provides for the embodiment of the invention;
The circuit diagram of the strong and weak apparatus for demonstrating of the solenoid magnetic that Fig. 2 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills belong to protection domain of the present utility model not making the every other embodiment that is obtained under the creative work prerequisite.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
As shown in Figure 1, the strong and weak apparatus for demonstrating of a kind of solenoid magnetic comprises: pointer 8, solenoid 3, spring 5, soft magnetic bodies 6 and supporting plate 14;
Soft magnetic bodies 6 is made for soft ferromagnetic material, and being not only can magnetic conduction, but also do not have the material of remanent magnetism after external magnetic field removes, and also was easy to be widely used in electrical equipment and the electronic equipment (as electromagnetic lifter) by beaing and heating demagnetization.Generally can be used as the permeability magnetic material in transformer, the motor, and various soft iron magnetic ferrites.For example be used to make electromagnet, electromagnetic relay, the iron core of transformer and motor etc.
Solenoid 3 is located at a side of soft magnetic bodies 6, is provided with at least one tap 2 in the coil of solenoid 3.
Supporting plate 14 places of described pointer 8 tops are provided with index dial 1.
The inside of described solenoid 3 is provided with removable iron core 4.Iron core adopts soft ferromagnetic material.
1/5 to 1/3 place apart from pointer 8 lower ends is located in rotating shaft 7 on the described pointer 8.If this plays the displacement of amplifying the lower end, the reading that is reacted to index dial 1 place on the pointer 8 is just big, reads easily.Can select the rotating shaft 7 on the described pointer 8 to be located in the specific embodiment apart from 1/4 place of pointer 8 lower ends.
The strong and weak apparatus for demonstrating of described solenoid magnetic also comprises balanced weight 9; Balanced weight 9 is a resilient ring, and described balanced weight 9 tightly is enclosed within on the pointer 8 of pointer 8 and the pin joint top of rotating shaft 7, and can move along pointer 8 so that and soft magnetic bodies 6 (heavier) balance each other.Make pointer 8 not need bigger moment just can begin to rotate.
Experimental principle:
The strong and weak apparatus for demonstrating of solenoid magnetic is proofreaied and correct by the first step, elder generation, makes pointer 8 be in equilibrium state, and makes pointer 8 be in 0 groove position; By Fig. 2 solenoid 3 is connected power supply 10, reometer 12, slide rheostat 11 and switch 13 etc., wherein, power supply 10 is that DC12V, reometer 12 ranges 11 are 5A, slide rheostat 11 models: 10 Europe-5 peace;
Second step, connect solenoid 3 the many taps 2 of the number of turn, just power supply 10 is connected in the tap 2 of two end lines of solenoid 3 coilings.After the energized 10, soft magnetic bodies 6 is attracted to solenoid 3, and under the leverage that pointer 8 forms, pointer 8 upper ends produce bigger skew, can read from index dial 1.When adjusting slide rheostat 11 can be observed the increase of reometer 12 readings, pointer 8 deflection angles increased, and show that the strong more solenoid magnetic of electric current is strong more.
The 3rd step, connect solenoid 3 the few tap 2 of the number of turn, just power supply 10 is connected between end line tap 2 post and centre tap 2 of solenoid 3 coilings.Regulate slide rheostat 11, observe reometer 12 readings, make it to reach the maximal value in second step, see obviously that then pointer 8 deflection angles reduce, show that the solenoid number of turn is few more, magnetic is weak more.
The 4th step, insert iron core 4, can see that the needle deflection angle obviously increases, show that the energization solenoid magnetic of inserting iron core 4 strengthens greatly from solenoid 3 left ends.
This experimental provision physical significance clear and definite is particularly suitable for physics demonstrative experiments in middle school.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (6)
1. the strong and weak apparatus for demonstrating of solenoid magnetic is characterized in that, comprising: pointer (8), solenoid (3), spring (5), soft magnetic bodies (6) and supporting plate (14);
Pointer (8) is articulated on the supporting plate (14) by rotating shaft (7), and pointer (8) lower end is soft magnetic bodies (6) fixedly, and spring (5) one ends are fixed in soft magnetic bodies (6) lower end, and the other end is fixed on the supporting plate (14);
Solenoid (3) is located at a side of soft magnetic bodies (6), is provided with at least one tap (2) in the coil of solenoid (3).
2. the strong and weak apparatus for demonstrating of solenoid magnetic according to claim 1 is characterized in that the supporting plate (14) of described pointer (8) top locates to be provided with index dial (1).
3. the strong and weak apparatus for demonstrating of solenoid magnetic according to claim 1 and 2 is characterized in that the inside of described solenoid (3) is provided with removable iron core (4).
4. the strong and weak apparatus for demonstrating of solenoid magnetic according to claim 1 and 2 is characterized in that the rotating shaft (7) on the described pointer (8) is located at apart from 1/5 to 1/3 place of pointer (8) lower end.
5. the strong and weak apparatus for demonstrating of solenoid magnetic according to claim 4 is characterized in that the rotating shaft (7) on the described pointer (8) is located at apart from 1/4 place of pointer (8) lower end.
6. the strong and weak apparatus for demonstrating of solenoid magnetic according to claim 4 is characterized in that, also comprises balanced weight (9); Described balanced weight (9) is placed on the pointer (8) of pin joint top of pointer (8) and rotating shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201558322U CN202093718U (en) | 2011-05-16 | 2011-05-16 | Solenoid magnetism intensity demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201558322U CN202093718U (en) | 2011-05-16 | 2011-05-16 | Solenoid magnetism intensity demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093718U true CN202093718U (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201558322U Expired - Fee Related CN202093718U (en) | 2011-05-16 | 2011-05-16 | Solenoid magnetism intensity demonstration device |
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| CN (1) | CN202093718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245532A (en) * | 2013-04-23 | 2013-08-14 | 上海市刑事科学技术研究院 | Scene sampler for toxicants in water body and using method |
-
2011
- 2011-05-16 CN CN2011201558322U patent/CN202093718U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245532A (en) * | 2013-04-23 | 2013-08-14 | 上海市刑事科学技术研究院 | Scene sampler for toxicants in water body and using method |
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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: 20111228 Termination date: 20120516 |