CN210244786U - Teaching tool for detecting magnetic force of magnet - Google Patents

Abstract

The utility model relates to a teaching tool technical field especially relates to a detect teaching tool of magnet magnetic force size, and it includes the main tributary fagging, sets up in the first bar magnet of main tributary fagging upside and be used for with a plurality of counting parts of first bar magnet ferromagnetism complex, every counting part transversal personally submit the polygon. The utility model fixes the first bar magnet on the main support plate, which can avoid the bar magnet from shaking during the experiment and make the counting part fall off; on one hand, the counting piece and the bar magnet, and the counting piece are adsorbed together more stably; on the other hand, compare in the clip, the counting part counts the number more easily, and the experimental result is more directly perceived, the utility model discloses reduce the experiment degree of difficulty, practiced thrift classroom time, improved classroom efficiency.

Description

Teaching tool for detecting magnetic force of magnet

Technical Field

The utility model relates to a teaching tool technical field especially relates to a detect teaching tool of magnet magnetic force size.

Background

In the teaching work, a teacher needs to do a teaching experiment to clearly and intuitively show the magnetic force of different areas of the bar magnet to students. During the experiment, firstly, uniformly marking a plurality of test points along the length direction of the bar magnet; then, tying two ends of the bar magnet by thin wires, hanging the bar magnet on an iron support, and adjusting the bar magnet to keep the bar magnet horizontal; then, manufacturing a plurality of hooks by using a paper clip, and adsorbing one hook on each test point; and finally, adding the clip on each hook one by one until the clip can not be hung up any more, and recording the number of the clips adsorbed by each test point, thereby obtaining the magnetic force of each test point by comparison.

However, in the teaching experiment, because the clip has small volume and light weight, the clip is not easy to hang on the bar magnet during the experiment, the operation is troublesome, the difficulty is high, and the experiment is easy to fail; meanwhile, the number of the clip is large, so that the number of the clip is very difficult to record, the classroom time is greatly consumed, and the classroom efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The not enough to above-mentioned prior art, the utility model aims at providing a detect teaching tool of magnet magnetic force size can improve the experiment success rate, reduces the experiment degree of difficulty, practices thrift the classroom time, improves classroom efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a detect teaching tool of magnet magnetic force size, includes that main tributary fagging, level set up in the first bar magnet of main tributary fagging upside and be used for with a plurality of counting parts of first bar magnet iron magnetic coordination, the counting part is magnetic metal, every the polygon is personally submitted to the cross section of counting part.

Furthermore, a fixed track perpendicular to the bar magnets is arranged on the main supporting plate and located right below each test point of the first bar magnets, and the counting piece is in sliding fit with the fixed track.

Furthermore, the lower side of the main supporting plate and the lower side of the plurality of fixed rails are provided with accommodating grooves for accommodating the counting parts.

Furthermore, a counting scale used for displaying the number of the counting pieces is arranged in the fixed track.

Furthermore, the counting piece is provided with an observation hole for observing counting scales.

Further, the number of sides of the counting piece is even.

Further, the main tributary fagging downside just keeps away from one side of accomodating the groove and is provided with the fixed plate, the fixed plate is L type vertical connection with the main tributary fagging.

Furthermore, a plurality of reinforcing ribs are arranged between the fixing plate and the main supporting plate.

Furthermore, the two sides of the main support plate are respectively hinged with auxiliary support plates, each auxiliary support plate is provided with a second bar magnet at the upper side, and the length of the second bar magnet is one half of that of the first bar magnet.

The utility model has the advantages that:

firstly, the utility model fixes the first bar magnet to the main support plate, which can avoid the first bar magnet from shaking during the experiment, so that the counting piece falls off and the experiment fails, thereby reducing the experiment difficulty and improving the classroom efficiency;

secondly, the counting part with the polygonal cross section is matched with the first bar-shaped magnet in a magnetic way, on one hand, the counting part and the first bar-shaped magnet and the counting part are adsorbed together more stably; on the other hand, compare in the clip, the count piece is counted more easily, and the experimental result is more directly perceived, the utility model discloses reduce the experiment degree of difficulty, practiced thrift classroom time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a front view of a first embodiment of the present invention;

fig. 3 is a front view of a second embodiment of the present invention.

Reference numerals: 1. a main supporting plate; 2. a first bar magnet; 3. fixing a track; 4. a receiving groove; 5. a counting member; 51. an observation hole; 6. counting scales; 7. a fixing plate; 71. reinforcing ribs; 8. a sub-support plate; 9. a second bar magnet.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The first embodiment is as follows: a teaching tool for detecting the magnetic force of a magnet, which is shown in figure 1, comprises a main support plate 1, a first bar-shaped magnet 2 horizontally arranged on the upper side of the main support plate 1, and a plurality of counting parts 5 used for being magnetically matched with the first bar-shaped magnet 2, wherein the counting parts 5 are magnetic metal, and the magnetic metal can be iron, cobalt, nickel and the like which can be adsorbed by the magnet. The cross section of the counting part 5 is polygonal.

Specifically, 5 test points (not shown in the figure) can be uniformly arranged from the end part of the first bar magnet 2 along the length direction of the bar magnet, the main support plate 1 is a plastic plate, the first bar magnet 2 is horizontally fixed on the upper side of the main support plate 1, and compared with the method that the bar magnet is hung on an iron support by tying the two ends of the bar magnet with thin wires, the mode can avoid that the first bar magnet 2 shakes during the experiment, the counting piece 5 is not easy to fall off in advance, and the experiment fails; counting member 5 is the polygon, and counting member 5 can be more convenient adsorb in the test point of first bar magnet 2, easy operation, and the count is very convenient, the utility model discloses can improve the experiment success rate, reduce the experiment degree of difficulty, practice thrift classroom time, improve classroom efficiency.

Preferably, due to the fact that the distance between the adjacent test points is short, the magnetic field intensity of each test point is different, the counting pieces 5 on the adjacent test points are possibly adsorbed together, the experiment fails, repeated experiments are needed, interest and enthusiasm of students in exploring are reduced, and classroom teaching time is wasted. The main support plate 1 is provided with a fixed track 3 perpendicular to the bar magnets under each test point of the first bar magnets 2, and the counting part 5 is in sliding fit with the fixed track 3. The fixed track 3 is two parallel arrangement's plastic slab, and count piece 5 can slide in fixed track 3, and fixed track 3 can avoid count piece 5 on the adjacent test point to adsorb together, improves the success rate of experiment.

Preferably, because the counting piece 5 that needs to retrieve after the experiment finishes, noise is produced easily when the counting piece 5 breaks away from first bar magnet 2, influences the classroom, and it is inconvenient to pick up the operation of counting piece 5 one by one with the hand and retrieves arrangement material trouble simultaneously, takes a long time. The lower side of the main supporting plate 1 and below the plurality of fixed rails 3 are provided with a receiving groove 4 for receiving a counting member 5. When needs retrieve and adsorb in the counting piece 5 of first bar magnet 2, press the counting piece 5 that presses near the test point with the finger, then slide this counting piece 5 and make it break away from first bar magnet 2, a plurality of counting pieces 5 can fall into along fixed track 3 and accomodate in groove 4, accomodate the setting of groove 4, practice thrift the test time, the production of noise reduction improves the efficiency of retrieving counting piece 5.

As shown in fig. 2, a counting scale 6 for displaying the number of the counting members 5 is provided in the fixed rail 3. Specifically, from last to having set gradually "1, 2, 3 … …" count scale 6 down in trapped orbit 3, the interval of count scale 6 equals the width of count piece 5, owing to adsorb in the 5 many of count pieces of test point, also make mistakes easily very difficult when counting, count scale 6 can make things convenient for the student to observe the number that adsorbs in every test point count piece 5 directly perceivedly, make things convenient for the student to carry out analysis and statistics to the data of every test point, shorten the test time, classroom efficiency is improved.

Preferably, in order to observe the counting scale 6 conveniently, the counting member 5 is provided with an observation hole 51 for observing the counting scale 6.

Preferably, the number of the sides of the counting part 5 is an even number, and when the counting part 5 is adsorbed together, a larger contact area exists between the adjacent counting parts 5, so that the counting part 5 is adsorbed on the first bar magnet 2 more stably and is not easy to fall off in advance. Specifically, the cross section of counting member 5 can be quadrangle, hexagon or octagon, and counting member 5 here adopts the nut, and the nut cross section is regular hexagon, and the screw hole of nut can be used as inspection hole 51 simultaneously, and the nut can be purchased from market and is got, has reduced the utility model discloses a manufacturing cost.

As shown in fig. 1, a fixing plate 7 is disposed on a side of the main support plate 1 away from the receiving slot 4, and the fixing plate 7 is connected to the main support plate 1 in an L-shape. Specifically, main tributary fagging 1 is provided with respectively near the both sides of bottom and accomodates groove 4 and fixed plate 7, and the bottom of fixed plate 7, the bottom of main tributary fagging 1 and the bottom of accomodating groove 4 are located the coplanar, can improve the stability of main tributary fagging 1 like this, avoids main tributary fagging 1 to collapse when the experiment, causes the experiment failure.

Preferably, in order to improve the strength of the connection of the fixing plate 7 to the main support plate 1, a plurality of reinforcing ribs 71 are disposed between the fixing plate 7 and the main support plate 1.

Example two: an educational aid for detecting the magnitude of the magnetic force of a magnet, referring to fig. 3, the present embodiment is different from the first embodiment in that: the both sides of main tributary fagging 1 articulate respectively has accessory support board 8, adopt hinge connection (not showing in the picture) between main tributary fagging and the accessory support board 8, and accessory support board 8's width is half of main tributary fagging 1 width, can fold one side that main tributary fagging 1 kept away from first bar magnet 2, every accessory support board 8's upside all is provided with second bar magnet 9, the length of second bar magnet 9 is the half of 2 length of first bar magnet, and here is applied paint two second bar magnet 9 with a brush respectively for red and blue, conveniently does contrast experiment, verifies when the magnet rupture back, still exists two magnetic poles and magnetic field intensity distribution rule and same before the rupture.

The fixing plate 7 and the reinforcing ribs 71 are not disposed on the sub-support plate 8, the rest of the present embodiment is the same as the first embodiment, and the features not explained in the present embodiment are explained by the first embodiment, which is not described again here.

The operation method comprises the following steps:

during the experiment, the main support plate 1 is flatly placed on the teacher's desk, the first bar-shaped magnet 2 is over against the student, then the plurality of counting parts 5 are attached to the test points of the first bar-shaped magnet 2 in a sliding mode along the fixed track 3 one by one, and when each test point cannot attach the counting part 5, the counting scale 6 in the observation hole 51 of the counting part 5 at the lowest end of each test point is read, so that the magnetic force of each test point is obtained; when the counting piece 5 needs to be recovered, a finger presses the counting piece 5 close to the test point, then the counting piece 5 is slid to be separated from the first bar magnet 2, and the plurality of counting pieces 5 can fall into the accommodating groove 4 along the fixed track 3; when comparison is needed, the auxiliary supporting plate 8 is opened, the second bar magnet 9 is opposite to the student, and the steps are repeated.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims (9)

1. The utility model provides a detect teaching tool of magnet magnetic force size, characterized by: including main tributary fagging, level set up in the first bar magnet of main tributary fagging upside and be used for with a plurality of counting parts of first bar magnet iron magnetic coordination, the counting part is magnetic metal, every the cross section of counting part is the polygon.

2. The teaching tool for detecting the magnitude of the magnetic force of the magnet as claimed in claim 1, wherein: and a fixed track perpendicular to the bar magnets is arranged right below each test point of the first bar magnets on the main supporting plate, and the counting part is in sliding fit with the fixed track.

3. The teaching tool for detecting the magnitude of the magnetic force of the magnet as claimed in claim 2, wherein: and a containing groove for containing the counting part is arranged on the lower side of the main supporting plate and below the plurality of fixed rails.

4. The teaching tool for detecting the magnitude of the magnetic force of the magnet as claimed in claim 3, wherein: and counting scales for displaying the number of the counting parts are arranged in the fixed track.

5. The teaching tool for detecting the magnitude of the magnetic force of the magnet as claimed in claim 4, wherein: and the counting piece is provided with an observation hole for observing counting scales.

6. The teaching tool for detecting the magnitude of the magnetic force of the magnet as claimed in claim 5, wherein: the number of sides of the counting piece is even.

7. The teaching tool for detecting the magnitude of the magnetic force of the magnet as claimed in claim 3, wherein: the one side that the main tributary fagging downside just kept away from and accomodate the groove is provided with the fixed plate, the fixed plate is L type vertical connection with the main tributary fagging.

8. The teaching tool for detecting the magnitude of the magnetic force of the magnet as claimed in claim 7, wherein: and a plurality of reinforcing ribs are arranged between the fixing plate and the main supporting plate.

9. The teaching tool for detecting the magnitude of the magnetic force of a magnet according to any one of claims 1 to 8, wherein: the two sides of the main supporting plate are respectively hinged with auxiliary supporting plates, each auxiliary supporting plate is provided with a second bar magnet at the upper side, and the length of the second bar magnet is half of that of the first bar magnet.

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