Multi-functional launch demonstration device

A demonstration device and ejection device technology, which is applied in the direction of educational appliances, instruments, teaching models, etc., can solve the problems that students cannot capture, the experimental effect is poor, and the trajectory is blurred, so as to achieve intuitive and clear movement trajectory, clear and clear collision sound, and experimental good effect

Inactive Publication Date: 2010-06-23
上海市复兴高级中学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing device is slow to reflect, and the trajectory of the collision is blur

Method used

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  • Multi-functional launch demonstration device
  • Multi-functional launch demonstration device
  • Multi-functional launch demonstration device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 Shown, drill a diameter to be about the aperture of 0.2cm in the left end center of glass tube 4, backguy 2 penetrates from the hole and is connected with the right end of spring 3, groove type switch 6 control electromagnet is installed in the right end of glass tube 4. When in use, the laser is aimed at the iron ball 8 through the laser pointer 1 and the glass bead 5, presenting three points and one line. Pull the stay wire 2 hard, the spring 3 is compressed, release the stay wire 2, the spring 3 stretches rapidly, and the ball 5 is ejected. When the small ball 5 rushes to the right end port of the glass tube 4, it blocks the infrared rays in the notch of the ditch switch 6, the closed circuit is interrupted, and the iron ball 8 falls freely immediately, realizing the flat throwing of the glass small ball 5 and the free falling iron ball 8 falling at the same time.

[0013] Such as figure 2 , image 3 As shown, the internal structure of the groov...

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PUM

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Abstract

The invention relates to a demonstration device, in particular to a multi-functional launch demonstration device. The device comprises a small glass ball (5), a catapult, a glass tube (4) and an iron ball (8), wherein the small glass ball (5) does throwing motion; the catapult is used for launching the small glass ball (5); the glass tube (4) is used for supporting the small glass ball (5); the iron ball (8) does free-fall motion; a ditch-type switch (6) is arranged at a right end port of the glass tube (4); the upper end of the iron ball (8) is provided with an electromagnet (7) which can make the iron ball fall through the on and off of the circuit; and when the small glass ball (5) rushes to the right end port of the glass tube (4) to block the infrared ray in a notch of the ditch-type switch (6), the closed circuit is interrupted, the iron ball (8) freely falls to realize that the small throwing glass ball (5) and the free-fall iron ball (8) fall at the same time. The multi-functional launch demonstration device has the advantages of clear light path, nimble and fast reaction of an experiment, clear collision sound and clear and intuitive motion trail.

Description

technical field [0001] The invention relates to a demonstration device, in particular to a multifunctional ejection demonstration device. Background technique [0002] At present, middle school students' extracurricular experiments and small productions are a new experimental form that has emerged in teaching research and teaching this year. Extracurricular experiments and small productions can enable students to clearly verify multiple laws, connect the knowledge learned in class with the colorful physical world in daily life, and provide opportunities to observe nature and explore the mysteries of the world. The focus is on cultivating students' innovative consciousness, the ability to design experiments and make equipment by themselves, understand the connection between physics and other subjects, and strengthen the connection between theory and practice, which is conducive to the transformation of middle school education from exam-oriented education to quality education....

Claims

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Application Information

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IPC IPC(8): G09B23/10
Inventor 蔡德广
Owner 上海市复兴高级中学
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