CN201765730U

CN201765730U - Suspended left-hand rule demonstrating device

Info

Publication number: CN201765730U
Application number: CN2010201489031U
Authority: CN
Inventors: 王富民
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-29
Filing date: 2010-03-29
Publication date: 2011-03-16
Anticipated expiration: 2020-03-29

Abstract

The utility model relates to a suspended left-hand rule demonstrating and experimental device which uses a No.1 dry battery, a flat magnet, a single-blade key, a pair of metal supports for suspending a U-shaped conductor, the suspended U-shaped conductor formed by bending a straight conducting wire, a sliding rheostat, a battery clamp and a plastic baseplate, wherein the components are connected and combined, and then integrated on the plastic baseplate, and the flat magnet is attracted on an iron sheet which is bonded on the plastic baseplate, thereby being easy to change the direction of a magnetic field, the intensity and the direction of current, and capable of demonstrating the strains of an electrified straight conductor in the magnetic field with simple operation and intuitive phenomenon.

Description

Suspension type left-hand rule demonstration device

Affiliated technical field

The utility model relates to a kind of left-hand rule demonstrating experiment device, especially can be with dry cell of a joint, suspension type U-shaped conductor, one flat plate magnet demonstration energising straight conductor stressed physics teaching experiment device in magnetic field.

Background technology

At present, the stressed experiment in magnetic field of demonstration energising straight conductor is obviously many with multiturn coil, multiple batteries and ungulate strong magnets in order to make effect in the physics teaching in secondary school, needs a plurality of parts to connect, combine during the demonstration operation, time-consuming, effort, the presentation process troublesome poeration; Multiturn coil does not have the sub-thread electromotion straight wire directly perceived; The technology of existing left-hand rule demonstrator uses multiple batteries, parts more more, and battery separates with existing left-hand rule demonstration device, is not easy to move and the inclination certain angle makes wider student viewing.

Summary of the invention

The utility model provides a kind of suspension type left-hand rule demonstration device, it is a kind of energising straight conductor stressed experimental provision in magnetic field of demonstrating, each experiment components and parts is integrated on the plastic bottom board, compared with prior art used unit is few, simple in structure, phenomenon is obvious, directly perceived, and presentation process is simple to operate, is convenient to move and repetitive operation; Use the one flat plate strong magnet, area is big, is convenient to change the direction in magnetic field; Use a dry cell of a joint, a battery folder, a slide rheostat, counter clamp discharge pond can change sense of current, regulates the size that slide rheostat can change electric current, can deepen profound understanding and the understanding of student to left-hand rule by lecture experiment.

The technical scheme that its technical matters that solves the utility model adopts is: use dry cell of a joint, one flat plate magnet, hilted broadsword telegraph key, the metal support of a pair of suspension type U-shaped conductor, suspension type U-shaped conductor, a slide rheostat, a battery folder, the plastic bottom board that the straight lead of usefulness is converted into, each is integrated on the plastic bottom board after testing components and parts connection combination; Use a U-shaped electrical conductor that hangs on the magnet upper metal support, simple and clear; Use dry cell of a joint, because suspension type U-shaped conductor resistance is little, induction reactance is little in magnetic field, during work maximum current no better than one the joint dry cell short-circuit current 2.5-3 ampere, this suspension type U-shaped conductor suffered power in high-intensity magnetic field, be enough to make the bigger angle of suspension type U-shaped conductor deflection in high-intensity magnetic field, need not the series, parallel dry cell and form battery-poweredly, experimental phenomena is obvious; The metal support heat seal of a pair of suspension U-shaped conductor is on plastic bottom board, a tagger is bonded on the plastic bottom board that hangs U-shaped conductor below, use a dull and stereotyped ferrite or a neodymium iron boron strong magnet that is pull-in on the tagger, be convenient to pick and place magnet, to change the direction in magnetic field, and the certain angle that brassboard can be tilted, the scope of broadening one's vision; A slide rheostat is convenient to change the size of electric current; Dry cell folder the two poles of the earth have the identical spring leaf of shape, after dry cell of a joint is taken out in the battery folder, oppositely fold up again, can change sense of current, and are simple and clear, easy to operate.

The beneficial effects of the utility model are: the utility model compared with prior art used unit is few, and is simple in structure, phenomenon obviously, directly perceived, presentation process simple to operate is convenient to move and repetitive operation, is easy to promote.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is a three-dimensional structure diagram of the present utility model.

Fig. 3 is a conductor support cut-open view of the present utility model.

Fig. 4 is a battery folder front view of the present utility model.

201 is suspension type U-shaped conductor, and 202 is the metal support of a pair of suspension type U-shaped conductor, and 203 is dull and stereotyped magnet, and 204 is slide rheostat, and 205 is the hilted broadsword telegraph key, and 206 is battery folder.

301 for being bonded in the tagger on the plastic bottom board, and 302 is plastic bottom board.

401 is binding post, and 402 is the spring leaf at battery folder the two poles of the earth, and 403 is a dry cell,

404 is the Plastic clamping piece of battery folder.

Embodiment

Fig. 1 is circuit theory diagrams of the present utility model.

The metal support (202) of a pair of suspension type U-shaped conductor in Fig. 2 embodiment be converted into being about 80 centimetres, the about 2 millimeters copper conductors of diameter, and heat seal is on plastic bottom board; In Fig. 2, Fig. 3 embodiment, suspension type U-shaped conductor (201) is converted into yellow that outsourcing is eye-catching or red plastic adhesive tape with being about 80 centimetres, the about 1 millimeter enameled wire of diameter or the about 1.5 millimeters aluminum steel of diameter; The metal support contact portion of suspension type U-shaped conductor and suspension type U-shaped conductor is removed insulated hull; 20 ohm of slide rheostat (204) maximum values; Press circuit theory diagrams with 1 square millimeter sclerderm copper cash and connect parts such as switch, battery folder; Each parts is integrated on the plastic bottom board, and bonding is fixing; Plastic bottom board is a template, about 2 millimeters of plastics thickness, and 36 centimetres of about 2 cm x of volume 24 cm x, the ribbing of the template back side, 3 of long 24 cm x of high 1.5 cm x, 3 of long 36 cm x of high 1.5 cm x become well word shape.

In Fig. 3 embodiment, tagger (301) bonding or heat seal are on the plastic bottom board below the suspension type U-shaped conductor, and dull and stereotyped magnet piece is pull-in on the tagger that is bonded on the plastic bottom board; Suspension type U-shaped conductor (201) quality is little and have certain elasticity, this experimental provision to be convenient to move and the inclination certain angle makes wider student viewing.

In Fig. 4 embodiment, dry cell of a joint is had from the two poles of the earth take out in the battery folder of spring leaf after, oppositely fold up again, can change sense of current, simple and clear, easy to operate.

The utility model not only is confined to above-mentioned preferred forms, every structural change of under the utility model enlightenment, making, and the technical scheme identical or close with the utility model is all within protection domain of the present utility model.

Claims

1. suspension type left-hand rule demonstration device, it is characterized in that: use dry cell of a joint, one flat plate magnet, a hilted broadsword telegraph key, the metal support of a pair of suspension U-shaped conductor, the suspension type U-shaped conductor that straight lead is converted into, a slide rheostat, a battery folder, a plastic bottom board, after connecting combination, be integrated on the plastic bottom board, the metal support heat seal of a pair of suspension U-shaped conductor is on plastic bottom board, a tagger is bonded on the plastic bottom board that hangs U-shaped conductor below, dull and stereotyped magnet piece is pull-in on the tagger, is convenient to change the direction in magnetic field.

2. suspension type left-hand rule demonstration device according to claim 1 is characterized in that: No. one dry cell folder the two poles of the earth have the identical spring leaf of shape, and counter clamp discharge pond can change sense of current, regulates the size that slide rheostat can change electric current.