CN210378033U

CN210378033U - Experiment box for exploring factors influencing magnetism of electromagnet

Info

Publication number: CN210378033U
Application number: CN201921371003.0U
Authority: CN
Inventors: 卫凤丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-04-21
Anticipated expiration: 2029-08-22

Abstract

The utility model relates to a pupil's experiment teaching aid's technical field is a probe experiment box that influences electro-magnet magnetism size factor, both ends are provided with the support hinge respectively about going up the case lid downside, from a left side to the right side fixed mounting in proper order on the inner wall of last case lid have a plurality of battery casees, it has the battery of figure difference to establish ties in every battery case, the electric wire on the battery case is connected with lamp pearl, the switch, fixedly connected with support on the inner wall of last case lid, a plurality of iron cores are installed to detachably on the support, the coil of the difference of the number of turns is equipped with around. The utility model has the advantages of reasonable and compact structure, electric wire, battery, the switch through will dispersing originally has carried out grouping integration, but has kept alone again around the iron core that has the coil, does not have all things all integrated together, is a semi-integrated product, neither influences the exercise to student's hands-on ability, also enables students to have sufficient time to explore the influence of coil number of turns and electric current size to electromagnetism ferromagnetism.

Description

Experiment box for exploring factors influencing magnetism of electromagnet

Technical Field

The utility model relates to a pupil's experiment teaching aid's technical field is an explore experimental box that influences electro-magnet magnetism size factor.

Background

In the unit of 'energy' recorded in the six grades of science of the primary school in the current textbook, the magnetic experiment of the electromagnet is the most basic and important experiment, and factors influencing the magnetic strength of the electromagnet are many, but for pupils with low cognitive competence and comprehension ability, in order to enable the pupils to understand the factors influencing the magnetic strength of the electromagnet conveniently and intuitively, the best method is to study the influence of the number of turns of a coil on an iron core and the current strength on the electromagnetic ferromagnetism, the teaching material is divided into two experimental lessons, one is the 'coil experiment', the other is the 'current experiment', and when the pupils perform corresponding experimental research, the parts required in the experiment need to be connected and assembled, so the practical result is that the pupils waste a large amount of time on the assembly of the parts, once a certain part is connected wrongly, the whole experiment can be failed, the time for really researching the electromagnet experiment is not enough, the observation, the recording and the analysis are greatly discounted, the time and the labor are not convenient, the importance of circuit connection is excessively emphasized, the essence that the number of turns of a coil and the current magnitude of the coil influence the magnetism of the electromagnet is separated from the study of students, and the teaching quality is influenced. The existing advanced experimental device can integrate all parts together, and students can carry out fool operation, so that the experimental efficiency can be greatly improved, but the prior experimental device is too advanced, so that the demonstration process of the prior experimental device is not visual enough, the prior experimental device exceeds the normal cognitive level of the primary school students in the age, the teaching effect is not good, and the fool operation simultaneously limits the improvement of the practical ability of the students.

Disclosure of Invention

The utility model provides a probe the experimental box that influences the big or small factor of electro-magnet magnetism, overcome above-mentioned prior art not enough, it can effectively solve the pupil when carrying out the probing experiment of electro-magnet magnetism size, utilizes current method and experimental apparatus, can't guarantee when the research electro-magnet has sufficient time, also does not influence the problem that the student's hands-on ability improves.

The purpose of the application is realized as follows: the experimental box for researching the factors influencing the magnetism of the electromagnet comprises an upper box cover, a lower box cover and a plurality of battery boxes, wherein the left end and the right end of the lower side of the upper box cover are respectively provided with a supporting hinge, one end of the supporting hinge is arranged on the upper box cover, the other end of the supporting hinge is arranged on the lower box cover, the plurality of battery boxes are sequentially and fixedly arranged on the inner wall of the upper box cover from left to right, batteries with different numbers are connected in series in each battery box, two electric wires electrically connected with the batteries are arranged on each battery box, a lamp bead and a switch are electrically connected on each electric wire, a support is fixedly connected on the inner wall of the upper box cover, a plurality of iron cores are detachably arranged on each support, coils with different turns are wound on each iron core, two free ends of each coil are wiring ends, a digital number plate of each battery box is bonded on each electric wire, a, the cushion block is provided with two grooves, a storage box is clamped in one groove, a counting box is clamped in the other groove, small iron rings are densely distributed in the storage box, and a plurality of folders are fixedly connected in the lower box cover on the side without the cushion block.

The following are further optimization or/and improvement of the technical scheme of the utility model: further, the iron core is a U-shaped soft iron, the winding directions of the coils on the left side and the right side of the U-shaped soft iron are opposite, the support is provided with a plurality of clamping pieces which are distributed at intervals along the horizontal direction, and the left side and the right side of the U-shaped soft iron are clamped in a gap formed between the adjacent clamping pieces.

Furthermore, the electric wire and the coil are electrically connected through a male-female plug connector, at least one hasp capable of locking the upper box cover and the lower box cover together is arranged on the outer surfaces of the upper box cover and the lower box cover on the front side of the supporting hinge, and a handle is further arranged on the outer surface of the upper box cover.

Furthermore, a plurality of wire walking clamps are arranged on the electric wire at intervals to fix the trend of the electric wire.

Further, check the box and include box body, lid, and the upper end of box body is the open end, and the lid is installed on the open end of box body, and still an organic whole is connected with two-layer baffle about divideing into the box body inner space in the box body, and the right side of baffle is provided with the breach, and the breach is two-layer about with in the box body is linked together, and the breach department of baffle below still level is provided with turns over the board, and the middle part of turning over the board is provided with the pivot of installing in the box body.

The utility model has reasonable and compact structure, the electric wires, batteries and switches which are originally dispersed are grouped and integrated, but the iron core wound with the coil is independently reserved, all the objects are not integrated together, the semi-integrated product is a semi-integrated product, although the students still need to carry out circuit connection during the experiment, compared with the previous circuit, the connection steps are greatly simplified, thus not only the students can feel the interest of the experiment and enhance the practical ability, but also the time for connecting the circuit in the experiment process can be greatly reduced, the time, the labor and the efficiency are saved, the students can have enough time to explore the influence of the number of turns of the coil and the current magnitude on the electromagnetic ferromagnetism, in the experiment process, the students can more intuitively and perceptively know the factors influencing the magnetic magnitude of the electromagnet by counting the number of small iron rings on the iron core, and the cognitive level of the age bracket of the primary school students are in line, the teaching quality of teachers is improved, and the method has strong practicability.

Drawings

The specific structure of the application is given by the following figures and examples:

FIG. 1 is a schematic diagram of a front view structure of an experimental box for researching factors influencing the magnetism of an electromagnet;

FIG. 2 is a schematic diagram of a top view structure of an experimental box for researching factors influencing the magnetic size of an electromagnet;

fig. 3 is a schematic cross-sectional view of the counting cassette.

Legend: 1. go up the case lid, 2, lower case lid, 3, the battery case, 4, support hinge, 5, battery, 6, electric wire, 7, lamp pearl, 8, switch, 9, iron core, 10, coil, 11, digit number tablet, 12, number plate of turns, 13, cushion, 14, containing box, 15, check box, 16, little iron ring, 17, file folder, 18, card, 19, contact pin, 20, insert the section of thick bamboo, 21, latch seat, 22, lock seat, 23, handle, 24, walk the ply-yarn drill, 25, box body, 26, lid, 27, baffle, 28, turn over the board, 29, pivot.

Detailed Description

The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1 in the specification.

The invention will be further described with reference to the following examples and drawings, in which: as shown in the attached figures 1 to 3, the experimental box for exploring the factors influencing the magnetism of the electromagnet comprises an upper box cover 1, a lower box cover 2 and a plurality of battery boxes 3, wherein the left end and the right end of the lower side of the upper box cover 1 are respectively provided with a supporting hinge 4, one end of the supporting hinge 4 is arranged on the upper box cover 1, the other end of the supporting hinge 4 is arranged on the lower box cover 2, the plurality of battery boxes 3 are fixedly arranged on the inner wall of the upper box cover 1 from left to right in sequence, batteries 5 with different numbers are connected in series in each battery box 3, two electric wires 6 electrically connected with the batteries 5 are arranged on the battery boxes 3, a lamp bead 7 and a switch 8 are electrically connected on each electric wire 6, a support is fixedly connected on the inner wall of the upper box cover 1, a plurality of iron cores 9 are detachably arranged on the support, coils 10 with different turns are wound on each iron core 9, two free ends of the coils, the iron core 9 is adhered with a number plate 12 with the number of turns corresponding to the number of turns of the coil 10, one side in the lower box cover 2 is fixedly provided with a cushion block 13, the cushion block 13 is provided with two grooves, one groove is internally clamped with a storage box 14, the other groove is internally clamped with a counting box 15, small iron rings 16 are densely distributed in the storage box 14, and the lower box cover 2 without the cushion block 13 is fixedly connected with a plurality of file folders 17.

The utility model discloses when showing 10 turns of coil and electric current size of display coil and to the influence of electro-magnet magnetism size, mainly study through the control variable method, for example, when studying 10 turns of coil to electro-magnet magnetism's influence, can confirm a battery case 3 as fixed power earlier wantonly, then establish ties selected coil 10 together through electric wire 6 on the battery case 3, when opening switch 8, the electro-magnet that comprises coil 10 and iron core 9 produces magnetism, stretch into iron core 9 in container box 14 afterwards, can absorb certain quantity's little iron ring 16 on the iron core 9 this moment, we will inhale the iron core 9 of little iron ring 16 and put into in checking box 15 back, close switch 8, through dial little iron ring 16 and fall checking in checking box 15, the student will have a perceptual understanding to the magnetism size of electro-magnet in this experiment, the last little iron ring 16 quantity of drawing the experiment and the number of turns of this time used coil 10 fixed in file 17 The fixed experiment data table is recorded, so that an experiment is completed, according to the method, a plurality of groups of experiment data of the influence of the turns of the coil 10 on the magnetism of the electromagnet under the same power supply condition can be obtained by continuously replacing the coil 10 with different turns, and in the process of analyzing the data and counting the number of the small iron rings 16, students can intuitively and sensitively recognize that the magnetism of the electromagnet is enhanced along with the increase of the turns of the coil 10; similarly, when the influence of the current on the electromagnetic ferromagnetism is researched, the experiment is also carried out according to the principle of a control variable method, firstly, the coil 10 with a certain number of turns and the iron core 9 thereof are selected as fixed electromagnets, then, the coil 10 is electrically connected on the battery boxes 3 provided with batteries 5 with different numbers, after each experiment, the number of the small iron rings 16 sucked by the electromagnets and the number of the corresponding batteries 5 are recorded to form a plurality of groups of experimental data, and in the process of analyzing the data and counting the number of the small iron rings 16, students can intuitively and sensitively recognize that the magnetism of the electromagnets is enhanced along with the increase of the number of the batteries 5.

When the circuit at lamp pearl 7 place is correctly connected and battery 5 in corresponding battery case 3 still has the electricity, lamp pearl 7 will light, the luminous colour of lamp pearl 7 is the best green, not only can amazing the student do the interest of experiment, and can also remind the student can normally carry out the magnetism demonstration experiment of electro-magnet, digital number tablet 11 that sets up on electric wire 6, can make the student when carrying out electric wire 6 and coil 10 be connected, avoid linking wrong circuit because of taking wrong electric wire 6, and then delay the problem of experimental time, it is the number tablet 12 that sets up the turn number then can more directly perceivedly know the turn number of used coil 10 for the student, conveniently record experimental data. The cushion block 13 with the groove is preferably made of elastic materials, so that when the object containing box 14 and the counting box 15 are placed in the groove, the object containing box 14 and the counting box 15 can be packed more tightly and are not easy to fall off, the object containing box 14 and the counting box 15 can be fixed, and the object containing box and the counting box 15 can be taken out conveniently when necessary. The utility model discloses a through battery 5 what, come the size of visual reflection electric current, battery 5 is more, the electric current is big more, the reason is under the unchangeable condition of circuit total resistance, battery 5 who establishes ties together is more, voltage in the circuit is big more, so the electric current is also big more, current experimental apparatus, it is mostly that mains voltage is unchangeable, change the size of resistance in the circuit through the slide rheostat, and then finally change the electric current size in the circuit, but electric current size and voltage, the relation of resistance, these contents have surpassed the teaching category of primary school's stage, also hardly understand with the cognitive level of this age bracket of pupil, so do not explain the perception that the size of electric current comes through battery 5, directly perceived, the student also changes understanding, support hinge 4 can make the utility model discloses be in 90 open mode, conveniently carry out the experiment.

The utility model carries out grouping integration on the electric wires 6, the batteries 5 and the switches 8 which are originally dispersed, but the iron core 9 wound with the coil 10 is independently reserved, all the objects are not integrated together, the students still need to carry out circuit connection during the experiment, but before the comparison, the connection steps of the circuit are greatly simplified, thereby not only enabling the students to feel the interest of the experiment and enhancing the practical ability, but also greatly shortening the time for connecting the circuit during the experiment, saving time and labor and having high efficiency, enabling the students to have enough time to explore the influence of the number of turns of the coil 10 and the current magnitude on the magnetism of the electromagnet, and enabling the teaching task which can be completed only by at least two lessons to be completed originally, the teaching efficiency and the teaching quality are greatly improved, the utility model also more conforms to the cognitive level of the primary school students at this age, has good practicability.

According to the actual needs, the experimental box for researching the factors influencing the electromagnetic ferromagnetism is further optimized or/and improved: further, as shown in fig. 1, the iron core 9 is a U-shaped soft iron, the winding directions of the coils 10 on the left and right sides of the U-shaped soft iron are opposite, the bracket is a plurality of clamping pieces 18 which are horizontally distributed at intervals, and the left and right sides of the U-shaped soft iron are clamped in a gap formed between the adjacent clamping pieces 18.

We usually make iron core 9 into bar or U shape (i.e. hoof shape) to make iron core 9 magnetize more easily, in order to make the magnetism of electro-magnet stronger, strengthen the demonstration effect of the utility model, usually make iron core 9 into hoof shape, but note that winding direction of coil 10 on hoof iron core 9 is opposite, one side is clockwise, the other side must be anticlockwise, if winding direction is the same, the magnetization of two coils 10 to iron core 9 will offset each other, make iron core 9 not show magnetism. In order to make 9 deenergizations of iron core demagnetize immediately, we often adopt the faster soft iron or silicon steel material of demagnetization to make, such electro-magnet has magnetism when the circular telegram, magnetism just disappears thereupon after the outage, reduces the interference when inhaling little iron ring 16 between the adjacent twice experiments, if iron core 9 is made with the steel, in case by the magnetization back, will keep magnetism for a long time and can not demagnetize, then the intensity of its magnetism just can not be controlled with the size of electric current, makes the utility model discloses can not demonstrate the influence of electric current size to the electromagnetism ferromagnetism.

Further, as shown in fig. 1 and 2, the electric wire 6 is electrically connected with the coil 10 by arranging a male-female plug-in connector,

at least one hasp capable of locking the upper box cover 1 and the lower box cover 2 together is arranged on the outer surfaces of the upper box cover 1 and the lower box cover 2 at the front side of the supporting hinge 4, and a handle is further arranged on the outer surface of the upper box cover 1.

The male-female plug-in connector is a known technology and comprises two parts, one part is a plug pin 19, namely a male plug, and the other part is a plug barrel 20, namely a female plug, and the male-female plug-in connector can be used for conveniently connecting circuit elements, so that students can reduce the consumption on a connecting circuit, and most of the time is used for researching the influence of the number of turns of a coil 10 and the current magnitude on electromagnetic ferromagnetism. The hasp is for having publicly known technique, also known as hasp lock, it includes lock seat 22, the lock body, the spring bolt, spring bolt seat 21 fixed connection is on case lid 2 down, lock seat 22 fixed connection is on last case lid 1, the lock body that is equipped with the lock core can rotate around the round pin axle of fixing on lock seat 22, the spring bolt links as an organic wholely with the lock body, be equipped with the recess corresponding with the spring bolt on the spring bolt seat 21, through lifting, the padlock body can make the spring bolt break away from, the card is established in the recess to realize going up the swift opening or the locking between case lid 1 and lower case lid 2, the design of handle 23 then can be convenient right the utility model discloses shift.

Further, as shown in fig. 1, a plurality of wire feeding clips 24 are arranged on the electric wire 6 at intervals to fix the direction of the electric wire 6.

The wire feeding clamp 24 is a known technology, and the wire feeding clamp 24 is fixedly mounted on the wire 6, so that the arrangement of the wire 6 in the upper case cover 1 is clear and orderly, pupils who do experiments can see the arrangement clearly, wrong wires are not easy to connect, and smooth completion of the experiments is further ensured.

Further, as shown in fig. 3, the counting box 15 includes a box body 25 and a box cover 26, the upper end of the box body 25 is an open end, the box cover 26 is installed on the open end of the box body 25, a partition 27 dividing the internal space of the box body 25 into an upper layer and a lower layer is further integrally connected in the box body 25, the right side of the partition 27 is provided with a notch, the upper layer and the lower layer in the box body 25 are communicated by the notch, a turning plate 28 is horizontally arranged at the notch below the partition 27, a rotating shaft 29 installed in the box body 25 is arranged in the middle of the turning plate 28, and the turning plate 28 is hinged in.

The storage box 14 also comprises a box body 25 and a box cover 26, the upper end of the box body 25 is an open end, the box cover 26 is installed on the open end of the box body 25, the counting box 15 is mainly used for conveniently placing the small iron ring 16 adsorbed by each electromagnetic experiment on the baffle of the counting box 15 for counting, the number of the small iron rings 16 is adsorbed, students can directly perceive the electromagnetic property, the more the number of the small iron rings 16 is, the larger the magnetism of the electromagnet is, otherwise, the smaller the magnetism is, in order to not influence the counting of the small iron ring 16 in the next experiment, the small iron ring 16 which is placed on the baffle in the previous experiment and counted should be pushed into the lower layer of the counting box 15 from the turning plate 28, so as to empty the upper layer area of the baffle, after the experiment is finished, only the turning plate 28 needs to be opened, the small iron ring 16 is poured back to the storage box 14 for standby in the next experiment.

The foregoing description is by way of example only and is not intended as limiting the embodiments of the present application. All obvious variations and modifications of the present invention are within the scope of the present invention.

Claims

1. An experimental box for researching factors influencing the magnetism of an electromagnet is characterized by comprising an upper box cover, a lower box cover and a plurality of battery boxes, wherein the left end and the right end of the lower side of the upper box cover are respectively provided with a supporting hinge, one end of the supporting hinge is arranged on the upper box cover, the other end of the supporting hinge is arranged on the lower box cover, the plurality of battery boxes are sequentially and fixedly arranged on the inner wall of the upper box cover from left to right, batteries with different numbers are connected in series in each battery box, two electric wires electrically connected with the batteries are arranged on the battery boxes, lamp beads and switches are electrically connected on the electric wires, a support is fixedly connected on the inner wall of the upper box cover, a plurality of iron cores are detachably arranged on the support, coils with different numbers of turns are wound on each iron core, two free ends of the coils are wiring ends, digital number plates of the battery boxes connected to the, one side in the lower box cover is fixedly provided with a cushion block, the cushion block is provided with two grooves, a storage box is clamped in one groove, a counting box is clamped in the other groove, small iron rings are densely distributed in the storage box, and a plurality of folders are fixedly connected in the lower box cover on the side without the cushion block.

2. The experimental box for researching the factors influencing the magnetic property of the electromagnet according to claim 1, wherein the iron core is a U-shaped soft iron, the winding directions of the coils on the left side and the right side of the U-shaped soft iron are opposite, the support is a plurality of clamping pieces which are horizontally distributed at intervals, and the left side and the right side of the U-shaped soft iron are clamped in the gap formed between the adjacent clamping pieces.

3. The experimental box for exploring the factors affecting the magnetism of the electromagnet according to claim 1 or 2, wherein the electric wire and the coil are electrically connected by a male-female plug, at least one snap fastener for locking the upper box cover and the lower box cover together is installed on the outer surface of the upper box cover and the lower box cover on the front side of the supporting hinge, and a handle is further installed on the outer surface of the upper box cover.

4. The experimental box for exploring the factors influencing the magnetism of the electromagnet as claimed in claim 1 or 2, wherein a plurality of wiring clamps are arranged on the electric wire at intervals to fix the trend of the electric wire.

5. The experimental box for exploring the influence on the magnitude of electromagnetic ferromagnetism according to claim 3, wherein a plurality of wiring clamps are arranged on the electric wires at intervals to fix the trend of the electric wires.

6. The experimental box for exploring the size factor affecting the electromagnetic ferromagnetism according to claim 3, characterized in that the counting box comprises a box body and a box cover, the upper end of the box body is an open end, the box cover is installed on the open end of the box body, a partition board dividing the inner space of the box body into an upper layer and a lower layer is further integrally connected in the box body, a notch is arranged on the right side of the partition board and communicates the upper layer and the lower layer in the box body, a turning plate is further horizontally arranged at the notch below the partition board, a rotating shaft installed in the box body is arranged in the middle of the turning plate, and.

7. The experimental box for exploring the size factor affecting the electromagnetic ferromagnetism according to claim 4, characterized in that the counting box comprises a box body and a box cover, the upper end of the box body is an open end, the box cover is installed on the open end of the box body, a partition board dividing the inner space of the box body into an upper layer and a lower layer is further integrally connected in the box body, a notch is arranged on the right side of the partition board and communicates the upper layer and the lower layer in the box body, a turning plate is further horizontally arranged at the notch below the partition board, a rotating shaft installed in the box body is arranged in the middle of the turning plate, and.

8. The experimental box for researching the factors influencing the magnetism of the electromagnet according to the claim 1, the experimental box for researching the factors influencing the magnetism of the electromagnet is characterized in that the counting box comprises a box body and a box cover, the upper end of the box body is an open end, the box cover is installed on the open end of the box body, a partition board dividing the inner space of the box body into an upper layer and a lower layer is further integrally connected in the box body, a notch is formed in the right side of the partition board and communicates the upper layer and the lower layer in the box body, a turning plate is further horizontally arranged at the position of the notch below the partition board, a rotating shaft installed in the.