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Anti-deviation teaching compass ruler based on gas pressure

A gas pressure, anti-offset technology, applied in the field of teaching equipment, can solve problems such as affecting teaching efficiency and increasing drawing difficulty, and achieve the effects of increasing cleaning effect, increasing sealing performance, and increasing stability

Inactive Publication Date: 2021-06-08
刘璐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide an anti-offset teaching compass ruler based on gas pressure. The purpose is to fix the drawing ruler on the blackboard and solve the problem of sliding the compass ruler, which increases the difficulty of drawing and affects the teaching efficiency. question

Method used

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  • Anti-deviation teaching compass ruler based on gas pressure
  • Anti-deviation teaching compass ruler based on gas pressure
  • Anti-deviation teaching compass ruler based on gas pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 - Figure 5 As shown, the present invention provides a kind of anti-deviation teaching compass ruler based on gas pressure, comprising a ruler rod 1, the two sides of the lower end of the ruler rod 1 are respectively provided with a clamping end 2 and a fixed end 3, and the inside of the fixed end 3 A connecting rod 31 and an adsorption rod 32 are provided, and the lower end of the connecting rod 31 is slidably engaged with the upper end of the adsorption rod 32 and tightly matched. A squeeze shrapnel 36 is fixedly connected between the connecting rod 31 and the adsorption rod 32, and the lower end of the adsorption rod 32 The adsorption structure 33 is fixedly connected, the inside of the adsorption rod 32 is provided with a sliding cavity 34, the lower end of the adsorption rod 32 is located at the sliding cavity 34, and a sealing plug 35 is provided, and the outer surface above the middle part of the connecting rod 31 is slidably engaged with a conne...

Embodiment 2

[0028] Such as image 3 As shown in -6, on the basis of Embodiment 1, the present invention provides a technical solution: the inside of the inner chuck a2 is provided with a clamping claw s1, the inside of the clamping claw s1 is provided with an air hole s2, and the inside of the clamping claw s1 A knocking ball s4 is provided for movable clamping on one side, and a magnet s3 is fixedly connected to the side of the air hole s2 away from the knocking ball s4.

[0029] Among them, a rubber ring d1 is arranged inside the knocking ball s4, a limiting structure d3 is provided on the outside of the rubber ring d1, and a shaking ball d4 is arranged inside the limiting structure d3, and the inner surface of the rubber ring d1 is located between the limiting structures d3 The iron piece d2 is fixedly connected, and the inside of the rubber ring d1 is hollowed out, thereby reducing the force required for the airflow to squeeze and hit the ball s4, thus making vibration easier to gener...

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PUM

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Abstract

The invention discloses an anti-deviation teaching compass ruler based on gas pressure, and relates to the technical field of teaching aids. The anti-deviation teaching compass ruler comprises a ruler rod, wherein a clamping end and a fixing end are respectively arranged at two sides of the lower end of the ruler rod; a connecting rod and an adsorption rod are arranged in the fixing end; and the lower end of the connecting rod and the upper end of the adsorption rod are slidably clamped and tightly matched. Through the combination of a closing rod and a sliding cavity, when the connecting rod is extruded, gas flow can circulate when the gas pressure reaches a certain value through the elasticity of an extrusion sheet, so that the gas is sprayed out in a point-breaking mode, the gas impacts a blackboard, and dust on the surface of the blackboard is shaken off; through cooperation with flowing of the gas flow, the dust flows out from the space between the adsorption structure and the blackboard, so that the sealing performance between the adsorption structure and the blackboard is guaranteed; and by arranging an inner chuck, when an elastic piece is extruded to push the connecting rod to reset, a suction cup and the inner chuck deform through gas drawing, so that the blackboard is clamped, the stability between the blackboard and the suction cup is improved, and sliding is prevented.

Description

technical field [0001] The invention relates to a compass ruler, relates to the technical field of teaching instruments, in particular to a deflection-proof teaching compass ruler based on gas pressure. Background technique [0002] In mathematics and drawing, compasses are tools used to draw circles or chords. They are often used for drawing with rulers and gauges. In classroom teaching, compasses need to be fixed on the blackboard for drawing teaching on the blackboard. There are following problems at prior art: [0003] 1. In the prior art, when the compass ruler is fixed on the blackboard, it is difficult to fix the end, and it is easy to slide when drawing, which makes drawing difficult and affects the teaching efficiency; [0004] 2. In the prior art, for some teachers, it will increase the difficulty of drawing, reduce the teaching efficiency, and then fail to achieve the original intention of the use of auxiliary teaching, and the applicability of the compass become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L9/00B43L9/24B43L21/02B43L12/00B43L21/00
CPCB43L9/00B43L9/24B43L12/00B43L21/00B43L21/02
Inventor 孙全胜
Owner 刘璐