CN207409171U - A kind of multifunctional magnetic-force teaching appliance - Google Patents

Abstract

The utility model is related to a kind of multifunctional magnetic-force teaching appliances, and including pedestal, column, cross bar, paper folding small fish and coin, the column is vertically on the pedestal, and cricoid first magnet is cased in the upper end of the column；Paper folding small fish has and multiple has magnetism for demonstration magnet, some described paper folding small fish contain the magnetic material that can be lived when being displaced to upper end along column is manual-up by first magnet adsorption in the mouth wherein, while in paper folding small fish described in other in the mouth containing the non-magnetic material that cannot be lived when being displaced to upper end along column is manual-up by first magnet adsorption；The coin have it is multiple, multiple coins be suspended on after being vertically connected with by the magnetic force of first magnet along the column on the first magnet for demonstrate magnetization phenomenon.The beneficial effects of the utility model are：Can have magnetic (absorption magnetic material) and magnetized magnetics rudimentary knowledge to student's demonstration magnet, there is certain interest and intuitive.

Description

A kind of multifunctional magnetic-force teaching appliance

Technical field

The utility model is related to instruments used for education fields, and in particular to a kind of multifunctional magnetic-force teaching appliance.

Background technology

It needs to carry out magnetic force teaching, the magnetics rudimentary knowledge being described as follows to student in primary school's Third school grade science class：Magnetic Iron has magnetism (absorption magnetic material), magnetization, magnet can adsorb magnetic material across some objects and polylith magnet is different Pole superposition magnetic force can increase.Presently, there are some magnetic force teaching appliances, and e.g., Patent No. 90202844.8, patent name are《More work( It can magnetic force teaching aid board》A kind of teaching aid is disclosed, is mainly that the magnetic principle of research and utilization magnet is fabricated to easily Teaching aid board；The author that Wei Pu is announced on the net is Shen Manchen, entitled《The design and fabrication of magnetic force demonstrator》Article, it is main It is the works shown for the magnetic line of force, magnet the two poles of the earth.The said goods cannot have magnetic (absorption magnetism to student's demonstration magnet Material), magnetization, magnet can across some objects adsorb magnetic material and polylith magnet it is heteropolar superposition magnetic force can increased magnetic Learn rudimentary knowledge.

Utility model content

In conclusion for overcome the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide one Kind multifunctional magnetic-force teaching appliance.

The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of multifunctional magnetic-force teaching appliance, including base Seat, column, cross bar, paper folding small fish and coin, the column is vertically on the pedestal, and in the upper end cap of the column There are cricoid first magnet, the horizontal top for being in the column of the cross bar；

Paper folding small fish have it is multiple there is magnetism for demonstration magnet, some described paper folding small fish are in the mouth wherein Containing the magnetic material that can be lived when being displaced to upper end along column is manual-up by first magnet adsorption, while other one A little containing in the mouth for paper folding small fish cannot be lived when being displaced to upper end along column is manual-up by first magnet adsorption Non-magnetic material；

The coin has multiple, and multiple coins are vertically connected with by the magnetic force of first magnet along the column After be suspended on the first magnet for demonstrate magnetization phenomenon.

The beneficial effects of the utility model are：Can have to student's demonstration magnet magnetic (absorption magnetic material) and magnetized Magnetics rudimentary knowledge has certain interest and intuitive, can adsorb student and participate in learning to deepen the impression, it is readily appreciated that, and And the teaching appliance makes simply.

Based on the above technical solutions, the utility model can also do following improvement：

Further, paper blade, the steel edge of magnetic material can be adsorbed for demonstration magnet across some objects by further including Piece, cotton thread and iron hoop, one end of the cotton thread are connected on the pedestal, and the other end of the cotton thread connects the iron hoop, institute The lower section that iron hoop is in first magnet is stated, and the cotton thread stretches under magneticaction of first magnet to iron hoop After tighten, the paper blade or the metal blade between first magnet and the iron hoop from manually passing through to demonstrate magnetic Iron can adsorb magnetic material across some objects.

Advantageous effect using above-mentioned further scheme is：It can be adsorbed to student's demonstration magnet across some objects magnetic The magnetics rudimentary knowledge of material has certain interest and intuitive.

Further, further include to demonstrate the heteropolar superposition magnetic force of polylith magnet can increased second magnet, the 3rd magnet and Clip, second magnet and the 3rd magnet are the annular magnet to match with first magnet, described back-shaped Pin has multiple；Second magnet is sleeved on the column and both first magnet is heteropolar is superimposed or second magnet It is sleeved on the 3rd magnet on the column and different numbers is adsorbed by iron wire hook from the heteropolar superposition of the first magnet three The clip of amount can increase for the heteropolar superposition magnetic force of demonstration polylith magnet.

Advantageous effect using above-mentioned further scheme is：Demonstrating the heteropolar superposition magnetic force of polylith magnet to student can be increased Magnetics rudimentary knowledge has certain interest and intuitive.

Description of the drawings

Fig. 1 is to roll over small fish demonstration magnet with paper to have magnetic schematic diagram (arrow represents that paper rolls over small fish and drops)；

Fig. 2 is the A enlarged drawings of Fig. 1；

Fig. 3 is the schematic diagram that magnetization phenomenon is demonstrated with coin；

Fig. 4 is the schematic diagram that demonstration magnet can adsorb magnetic material across paper blade；

Fig. 5 be demonstration magnet across metal blade can not adsorb magnetic material schematic diagram (arrow represent iron hoop fall Fall)；

Fig. 6 can increased schematic diagram for the heteropolar superposition magnetic force of demonstration polylith magnet.

In attached drawing, parts list represented by the reference numerals is as follows：

1st, pedestal, 2, column, 3, cross bar, 4, paper folding small fish, 5, coin, 6, magnetic material, 7, non-magnetic material, 8, paper knife Piece, 9, metal blade, 10, cotton thread, 11, iron hoop, the 12, first magnet, the 13, second magnet, the 14, the 3rd magnet.

Specific embodiment

The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality It is new, it is not intended to limit the scope of the utility model.

(1) demonstration magnet is magnetic

As illustrated in fig. 1 and 2, the paper that face contains magnetic material 6 or non-magnetic material 7 is rolled over small fish 4 one by one with hand Near along column 2 " trip " to the first magnet 12 of demonstrator top annular.Whether observation paper folding small fish 4 is inhaled by the first magnet 12 It is attached, it be put on one side small fish 4 can be rolled over by the paper that the first magnet 12 adsorbs, it is impossible to be put by the paper folding small fish 4 that the first magnet 12 adsorbs To another side.The adhesive plaster of paper folding small fish 4 face processing is torn, what material what observation paper folding small fish 4 contained in the mouth is.

【Experimental phenomena, conclusion】

Phenomenon：Some paper folding small fish 4 is adsorbed by the first magnet 12, hangs on teaching appliance, and some paper folding small fish 4 not by Absorption；The article for finding such as iron material of clip, iron nail containing magnetic material 6 in the paper adsorbed folding 4 mouth of small fish is dismantled, What is contained in paper folding 4 mouth of small fish not adsorbed is non-magnetic material 7 such as batten, the article of copper wire non-ferric prepared material.

Conclusion：Magnet is magnetic, and can adsorb the article of iron material.

(2) magnetization phenomenon is demonstrated

As shown in figure 3, the coin 5 of one piece of unitary is placed under the first magnet 12 of annular, coin 5 is adsorbed. One piece one jiao of coin 5 is put in 5 lower section of unitary coin adsorbed again, and whether observation dime 5 can also be adsorbed.Same side Method is adding three pieces one jiao of coin 5 one by one under dime 5, and whether observation coin 5 can also continue to adsorb.

【Experimental phenomena, conclusion】

Phenomenon：The dime 5 added up one by one is all adsorbed.

Conclusion：Magnet, which can magnetize, to be in contact with it or close iron article, so that iron article also has magnetic force.

(3) demonstration magnet can inhale iron across some objects

As shown in Figures 4 and 5, the materials such as paper blade 8, metal blade 9, cotton thread 10 and iron hoop 11, paper blade 8, gold are got out Belong to blade 9 and make pocket knife shape.Paper blade 8, metal blade 9 are carefully cut through respectively between the first magnet 12 and iron hoop 11.It sees Examine whether iron hoop 11 falls down.

【Experimental phenomena, conclusion】

Phenomenon：When paper blade 8 is cut through between the first magnet 12 and iron hoop 11, iron hoop 11 remains suspended in the first magnet 12 lower sections；And when metal blade 9 is cut through between the first magnet 12 and iron hoop 11, iron hoop 11 is fallen down.

Conclusion：Magnet has the property for attracting iron, that is, the magnetism of magnet.Magnet can inhale iron across some objects, Such as paper blade 8, but not can be adsorbed across all objects, such as metal blade 9.

(4) demonstration magnet is superimposed the influence to magnetic force size

Iron wire hook 15 is adsorbed at the first magnet 12, adds clip 16 on iron wire hook 15 one by one, until clip 16 Gravity be more than the magnetic force that is subject to and fall down, count the quantity for the clip 16 that the first magnet 12 can be hung up.

The second magnet 13 is added in the position of column 2 and corresponding first magnet 12, makes two blocks of magnet are heteropolar to be drawn onto together, According still further to the method for step 1, in addition clip 16, clip 16 can be hung up by counting the first magnet 12 and the second magnet 13 Quantity.

According to above-mentioned same method, 14 3 blocks of the first magnet 12, the second magnet 13 and the 3rd magnet magnet is made to inhale one It rises, counts the quantity that can hang up clip 16.

The quantity for the clip 16 hung up three times is compared, sees that the clip 16 which time is hung up counts at most, which time is minimum.

【Experimental phenomena, conclusion】

Phenomenon：Three blocks of magnet are heteropolar to stack up, and the clip number that can be hung up is most.

Experiment conclusion：Magnetic force caused by the heteropolar superposition of magnet can increase.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within new spirit and principle, any modifications, equivalent replacements and improvements are made should be included in the guarantor of the utility model Within the scope of shield.

Claims (3)

1. a kind of multifunctional magnetic-force teaching appliance, which is characterized in that including pedestal (1), column (2), cross bar (3), paper folding small fish (4) With coin (5), the column (2) is cased in the upper end of the column (2) cricoid vertically on the pedestal (1) First magnet (12), the horizontal top for being in the column (2) of the cross bar (3)；

The paper folding small fish (4) has multiple for mouth of the demonstration magnet with magnetism, wherein some paper folding small fish (4) In containing the magnetic material (6) that can be adsorbed by first magnet (12) when being displaced to upper end along column (2) is manual-up, Simultaneously in paper folding small fish (4) described in other in the mouth containing cannot be by when being displaced to upper end along column (2) is manual-up The non-magnetic material (7) that first magnet (12) adsorbs；

The coin (5) has multiple, and multiple coins (5) are by the magnetic force of first magnet (12) along the column (2) it is suspended on the first magnet (12) to demonstrate magnetization phenomenon after being vertically connected with.

2. multifunctional magnetic-force teaching appliance according to claim 1, which is characterized in that further including can be every for demonstration magnet Paper blade (8), metal blade (9), cotton thread (10) and the iron hoop (11) of some object absorption magnetic materials, the cotton thread (10) One end be connected on the pedestal (1), the other end of the cotton thread (10) connects the iron hoop (11), at the iron hoop (11) In the lower section of first magnet (12), and the cotton thread (10) makees the magnetic force of iron hoop (11) in first magnet (12) It is tightened after being stretched under, the paper blade (8) or the metal blade (9) are from first magnet (12) and the iron hoop (11) magnetic material can be adsorbed with demonstration magnet across some objects by being manually passed through between.

3. multifunctional magnetic-force teaching appliance according to claim 1 or 2, which is characterized in that further include to demonstrate polylith magnetic Iron it is heteropolar superposition magnetic force can increased second magnet (13), the 3rd magnet (14) and clip (16), second magnet (13) It is the annular magnet that matches with first magnet (12) with the 3rd magnet (14), the clip (16) has more It is a；Second magnet (13) is sleeved on the column (2) and both first magnet (12) is heteropolar is superimposed or described the Two magnet (13) and the 3rd magnet (14) are sleeved on the column (2) leads to heteropolar be superimposed of the first magnet (12) three Iron wire hook (15) is crossed to adsorb the clip of different number (16), can be increased for the heteropolar superposition magnetic force of demonstration polylith magnet.