CN202573424U

CN202573424U - Multifunctional automatic dustless chalk

Info

Publication number: CN202573424U
Application number: CN 201220140984
Authority: CN
Inventors: 王龙华; 崔俊国; 刘忠砚; 冯浩
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-12-05
Anticipated expiration: 2022-03-27

Abstract

The utility model relates to a multifunctional automatic dustless chalk, which mainly comprises a chalk tube with a guide rail, a propeller, a locker, a rear end cover and a dustless chalk. A closed circuit consisting of a laser generator, a power supply battery, a control switch and a lead is arranged in the rear end cover, so that the chalk can emit laser and serve as a laser teaching bar. The chalk is small and portable, can prevent chalk dust when used, and can also serve as the teaching bar.

Description

A kind of multi-functional automatic dust-free chalk

Technical field

The utility model relate to a kind ofly can stretch out automatically, automatic chalk that the indentation chalk can use as laser religion rod again.

Background technology

Before a kind of multi-functional automatic dust-free chalk invention; The teacher uses two kinds of teaching aids of chalk and religion rod, the problem that they have much room for improvement below existing: when chalk is used in (1), be easy to be stained with chalk dust on hand; Both unhygienic also unhealthy (2) hand-held chalk is write frangible; Chalk utilization rate low (3) religion rod and chalk are two independent teaching aids, and it is too much to cause teacher to carry teaching aid, brings inconvenience.

Summary of the invention

To the deficiency of above-mentioned technology, the utility model provides a kind of chalk dust of neither can being infected with can regard the automatic dust-free chalk that the religion rod uses again

The purpose of the utility model is achieved in that multi-functional automatic dust-free chalk, comprises the shaft of a writing brush, propeller, locker, rear end cap and the dust-free chalk of being with guide rail.Chalk places in the shaft of a writing brush, and the chalk rear end is fixed on the propeller front end, and the chalk front end stretches out shaft of a writing brush front end, regulates the chalk position through the push-and-pull propeller.Wherein rear end cap is interior can send laser by the closed-loop path of being made up of laser generator, supplying cell, gauge tap and lead, makees laser religion rod and uses.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the structural representation of the utility model.1-dust-free chalk wherein, the shaft of a writing brush of 2-band guide rail, 3-propeller, 4-locker, 5-rear end cap.

Fig. 2 is the excellent sketch map of laser religion that proposes according to utility model.6-laser generator wherein, 7-supplying cell, 8-lead, 9-gauge tap.

Fig. 3 is the electrical schematic of laser instrument.

The specific embodiment:

As shown in Figure 1, a kind of multi-functional automatic dust-free chalk, comprise dust-free chalk 1, the band guide rail the shaft of a writing brush 2, propeller 3, locker 4 and rear end cap 5.Dust-free chalk 1 places in the shaft of a writing brush 2 of band guide rail; Dust-free chalk 1 rear end is fixed on propeller 3 front ends; Dust-free chalk 1 front end stretches out the shaft of a writing brush 2 front ends of band guide rail, regulates the chalk position through push-and-pull propeller 3, and dragging locker 4 backward can be stuck in propeller 3 on the guide rail; Fix the chalk position, rear end cap 5 is fixed on the shaft of a writing brush 2 rear ends of band guide rail.In Fig. 2 in the rear end cap by the closed-loop path of forming by laser generator 6, supplying cell 7, lead 8 and gauge tap 9 (electrical schematic is consulted Fig. 3), can send laser, make laser religion rod and use.

If rear end cap 5 is used made, then can it be served as lead 8 laser generator 6, supplying cell 7, gauge tap 9 are unified into the loop.

The combinations thereof device is exactly a kind of multi-functional automatic dust-free chalk.

Claims

1. a multi-functional automatic dust-free chalk is characterized in that: the shaft of a writing brush (2), propeller (3), locker (4) and the rear end cap (5) that comprise band dust-free chalk (1), band guide rail; Dust-free chalk (1) places in the shaft of a writing brush (2) of band guide rail, and dust-free chalk (1) rear end is fixed on the propeller (3), and dust-free chalk (1) front end stretches out the shaft of a writing brush (2) front end of band guide rail, regulates the chalk position through push-and-pull propeller (3); The closed-loop path of being made up of laser generator (6), supplying cell (7), lead (8) and gauge tap (9) is wherein arranged in the rear end cap (5), can send laser.

2. a kind of multi-functional automatic dust-free chalk according to claim 1 is characterized in that: have the waveform guide rail on the shaft of a writing brush.

3. a kind of multi-functional automatic dust-free chalk according to claim 1, it is characterized in that: whole laser generator closed-loop path places in the rear end cap (5), and rear end cap (5) is installed in the rear end of the shaft of a writing brush (2) of band guide rail.