CN2852296Y

CN2852296Y - Electromagnetic traction scientific exhibit

Info

Publication number: CN2852296Y
Application number: CN 200520075901
Authority: CN
Inventors: 闫光亚; 姚穗; 罗斌; 刘曦东
Original assignee: ANHUI SCIENCE &TECHNOLOGY MUSEUM
Current assignee: ANHUI SCIENCE &TECHNOLOGY MUSEUM
Priority date: 2005-09-28
Filing date: 2005-09-28
Publication date: 2006-12-27
Anticipated expiration: 2015-09-28

Abstract

The utility model relates to an electromagnetic traction scientific exhibit, wherein a bar-shaped magnet which can rotate corresponding to a chassis is arranged at the central position of the chassis which is fixedly arranged; a plurality of small magnetic needles which can be arranged into a magnetic force line are arranged at the periphery of the chassis in the magnetic field of the bar-shaped magnet; each small magnetic needle uses respective center as a rotating shaft. The utility model is characterized in that a magnet coil and a small bulb are fixedly arranged on the chassis, and the magnet coil and the small bulb form a closed loop. The utility model can simultaneously display the magnetic force line and induction current. The utility model can be fixedly arranged in a scientific hall to display, and can also be used as a scientific caravan for loading exhibits to do excursion display.

Description

Electromagnetic traction science popularization showpiece

Technical field:

The utility model relates to the science popularization showpiece, more specifically says so to be used for demonstrating the science popularization showpiece of the magnetic line of force and electromagnetic principle.

Background technology:

In the universal method of middle Chinese's republic's science and technology, clear and definite with the form of law: science popularization is utility, is the important content of construction of socialist material and spirit civilization.Work of popular science improves citizen's scientific and cultural quality for implementing the strategy of developing the country by relying on science and education and the strategy of sustainable development, promotes economic growth and social progress, and significant meaning is arranged.Also emphasize in section's popularize law, carry out science popularization, should take the mode of public's easy to understand, acceptance and participation.

At present, more large-scale science popularization venue has been had in China, also has " science and technology center of flowing "---and science popularization van (existing 66 science popularization vans in the whole nation at present are distributed in 30 provinces and cities in the whole nation), they all need various science popularization showpieces to enrich its contents of the exhibition.

At the present existing showpiece that is used for showing the magnetic line of force, all be to adopt in the middle of showpiece a rotating bar magnet is set, around bar magnet, setting can be arranged into numerous small magnetic needles of the magnetic line of force, and small magnetic needle is rotating shaft with center separately.For any rest position of bar magnet, around small magnetic needle was arranged in by its magnetic line of force, when bar magnet rotated, small magnetic needle changed spread pattern along with the change of magnetic direction.This form image, lively and interesting.But this form does not have to show electromagnet phenomenon and principle simultaneously, does not make corresponding displaying for induction current yet, shows that content is single.

Summary of the invention:

The utility model is for avoiding above-mentioned existing in prior technology weak point, providing a kind of and can show the magnetic line of force and faradic electromagnetic traction science popularization showpiece simultaneously.

The technical scheme that the utility model technical solution problem is adopted is:

The utility model is on the middle position on the chassis that fixedly installs, setting can be with respect to the bar magnet of chassis rotation, in the periphery on chassis, be in the magnetic field of bar magnet, numerous small magnetic needles that are arranged in the magnetic line of force are set, every small magnetic needle is rotating shaft with center separately.

Design feature of the present utility model is on described chassis, fixedly installs solenoid and miniature bulb, and constitutes the closed-loop path by described solenoid and miniature bulb.

The utility model is to utilize bar magnet rotate to form rotating magnetic field, forms the cutting to the magnetic line of force between rotating magnetic field and static solenoid, because the existence of closed-loop path, thereby the generation electric current makes miniature bulb luminous.Compared with the prior art, the beneficial effects of the utility model not only are embodied in the demonstration that has realized simultaneously the induction current phenomenon, and under the illumination and decoration of miniature bulb, whole presentation process is more attractive;

The utility model both can be placed in the science popularization venue to be showed, also can be used as the vehicle-mounted showpiece of science popularization van, shows with car is touring.

Description of drawings:

Fig. 1 is the utility model planar structure synoptic diagram.

Fig. 2 is the utility model perspective view.

Number in the figure: 1 chassis, 2 bar magnets, 3 small magnetic needles, 4 miniature bulbs, 5 solenoids, 6 guard shields.

Below the utility model is described in further detail by example.

Referring to accompanying drawing, identical with prior art is on the middle position on the chassis 1 that fixedly installs, setting can be with respect to the bar magnet 2 of chassis 1 rotation, in the periphery on chassis 1, be in the magnetic field of bar magnet 2, numerous small magnetic needles 3 that are arranged in the magnetic line of force are set, and every small magnetic needle 3 is rotating shaft with center separately;

In the present embodiment, be pedestal, on chassis 1, fixedly install solenoid 5, constitute the closed-loop path with solenoid 5 and miniature bulb 4 with chassis 1.

In concrete the enforcement, hemispherical transparent shroud 6 can be set, therein on chassis 1 with chassis 1, bar magnet 2, solenoid 5 and miniature bulb 4 integral protections.

The demonstration mode:

The energized switch, bar magnet 2 rotates, and small magnetic needle 3 is rotating shaft with center separately on every side, change its arrangement mode along with the magnetic direction change, form simultaneously the cutting to the magnetic line of force between rotating magnetic field and the static magnetic line of force, the generation induction current makes miniature bulb 4 luminous.

Claims

1, electromagnetic traction science popularization showpiece, on the middle position of the chassis that fixedly installs (1), setting can be with respect to the bar magnet (2) of chassis (1) rotation, in the periphery of chassis (1), be in the magnetic field of bar magnet (2), numerous small magnetic needles (3) that are arranged in the magnetic line of force are set, every small magnetic needle (3) is rotating shaft with center separately, it is characterized in that on described chassis (1), fixedly install solenoid (5) and miniature bulb (4), and constitute the closed-loop path by described solenoid (5) and miniature bulb (4).

2, electromagnetic traction science popularization showpiece according to claim 1, it is characterized in that on described chassis (1), fixedly install hemispherical transparent shroud (6), described chassis (1), bar magnet (2), solenoid (5) and miniature bulb (4) integral protection are in guard shield (6).