CN2210445Y

CN2210445Y - Teaching article combining point with pen

Info

Publication number: CN2210445Y
Application number: CN 94220115
Authority: CN
Inventors: 魏吉祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-30
Filing date: 1994-08-30
Publication date: 1995-10-18
Anticipated expiration: 2004-08-30

Abstract

The utility model relates to a teaching appliance which combines a ferule and a demonstrating and teaching chalk sleeve and comprises an outer sleeve 1, an inner sleeve 2, a cartridge 3, a sliding piece 4, a ferule sleeve 6 and a hollow telescopic rod 5, wherein, the ferule sleeve 6 and the outer sleeve 1 are fixed into a whole; the cartridge 3 is a hollow double spiral structure and the inner sleeve 2 is sheathed on the outer part of the cartridge 3 and the inner part of the outer sleeve 1; the hollow telescopic rod is sheathed in the ferule sleeve according to the sizes of inner and outer diameters; a chalk sleeve is arranged in the cartridge when the inner sleeve is rotated, a chalk is screwed out along with the movement of the sliding piece. In teaching and explaining, the telescopic rod is pulled out to form the ferule and teachers do not directly touch the chalk. The utility model has the advantages of simple and portable structure and combination of the chalk sleeve and the ferule and purifies workplaces.

Description

Teaching article combining point with pen

The utility model relates to a kind of teacher's pointer and the Demostration and teaching pen teaching aid that two combine into one.Be a kind of chalk sleeve and teacher's pointer teaching aid that two combine into one with teacher's writing blackboard.

The teacher is saying that the class hour free-hand chalk of taking writes on blackboard in existing technology, has caused on teacher's hand and the clothes and all has been stained with chalk dust.The absorption method of chalk dust when in the instrument that the teacher uses, only having considered to erase the board at present, and to the teacher directly grabs chalk with hand this phenomenon, still be wanting in consideration.Secondly, when the teacher write, chalk was because of long normal off, too short then write difficult.Put down chalk and take teacher's pointer again in the process of teaching, seem more busy, it is too many that the article on the lectern also show.

The purpose of this utility model is: make the teacher break away from the pollution of chalk dust, the article on teacher's lectern are not messy.

Scheme of the present utility model is as follows: design a kind of chalk sleeve, with chalk sleeve interior.This chalk sleeve is rotatable, after chalk is write weak point, the chalk that protects in the sleeve is rotated again, writes with the length that is fit to.Simultaneously, the lower end of sleeve is connected with an extension type teacher's pointer.Serve as a teacher when writing on blackboard, teacher's pointer is partially retracted, and teacher's hand is grabbed the chalk sleeve and is write on blackboard.Avoid the teacher directly to grab chalk like this and polluted hand and clothes.Owing to write when chalk is shortened, chalk is spun out from sleeve make it that enough length be arranged again.Serve as a teacher when needing to use teacher's pointer, each sleeve in the telescopic teacher's pointer is pulled out, teacher's pointer just has enough length.Use in the classroom for the teacher.

The utility model makes the teacher break away from the pollution of chalk dust.Two combine into one for chalk sleeve and teacher's pointer, makes teacher's lectern not messy.

Below in conjunction with accompanying drawing the utility model is illustrated:

Fig. 1-Figure 13 is embodiment of the present utility model.Fig. 1, Fig. 2 are assembly drawing of the present utility model, and Fig. 1 is a cut-open view, and Fig. 2 is a front elevation.Fig. 3-Fig. 5 is the structure of pen core, and Fig. 4 is its cut-open view.Fig. 3, Fig. 5 be respectively A to, B to view.Fig. 6, Fig. 7 are the structural drawing of pen container, and Fig. 6 is that the A-A of Fig. 7 is to view.Fig. 8, Fig. 9 are the structural drawing of slide.Figure 10-Figure 12 is the structural drawing of outer sleeve.Figure 10 is a cut-open view, and Figure 11 is that A-A is to (teacher's pointer sleeve part) view.Figure 12 is its forward view.Figure 13 is the structural drawing of six roots of sensation expansion link in the teacher's pointer sleeve.

The utility model is made up of chalk sleeve and movable teacher's pointer two parts.The chalk sleeve part is made up of outer sleeve (1), inner sleeve (2), pen core (3), slide (4).The teacher's pointer part is made up of teacher's pointer sleeve (6), telescopic more piece teacher's pointer (5).Outer sleeve (1) and teacher's pointer sleeve (6) are connected to one.

Chalk (cylindrical) is enclosed within the pen core (3), and its end is near slide (4).Pen core (3) is double-spiral structure shown in Fig. 3,4,5, its base (7) is fixed on the back of outer sleeve (1).Inner sleeve (2) is shown in Fig. 6,7.Tightly be enclosed within outside, outer sleeve (2) inside of pen core (3), in the grooving of slide (4) two ears is arranged.When pen core (3) is enclosed within the inner sleeve (2), after put outer sleeve (3) after, because the base (7) of pen core (3) is fixedlyed connected with outer sleeve (1), the rotation inner sleeve is when (2), makes two microtias of slide (4) pass two groovings (8) lining that double spiral groove on the pen core (3) is enclosed within inner sleeve (2).Slide (4) can move with the rotation of inner sleeve (2).The bottom of chalk leans against on the slide (4), with moving of slide (4) pen is and then screwed out.

Teacher's pointer sleeve (6) and outer sleeve (1) are fixed as one (as shown in Figure 6).Teacher's pointer sleeve (6) Nei Yinei external diameter size is with six roots of sensation expansion link (5) successively.Every hollow expansion link.Every all has interior platform (9) and outer platform (10).The interior platform hanging sleeve of the outer platform of first (the thickest) and sleeve, first interior platform and second outer platform hanging sleeve, the mutual hanging sleeve of root root.Can pull into a long teacher's pointer.The time spent does not push back in the teacher's pointer sleeve.

Above-mentioned material is all made of plastic, and is light, practical.

Claims

1, a kind of teacher's pointer and the Demostration and teaching pen teaching aid that two combine into one, it is characterized in that above-mentioned teaching aid is made up of chalk sleeve and movable teacher's pointer two parts, above-mentioned chalk sleeve is by outer sleeve (1), inner sleeve (2), pen core (3), slide (4) is formed, above-mentioned movable teacher's pointer part is by teacher's pointer sleeve (6), telescopic more piece teacher's pointer (5) is formed, outer sleeve (1) and teacher's pointer sleeve (6) are fixed as one, above-mentioned pen core (3) is hollow double-spiral structure, its base (7) is fixed on the back of outer sleeve (1), inner sleeve (2) is enclosed within the outer sleeve (1), the outside of pen core (3), there are two microtia shapes of two groovings (8) and slide (4) identical on the interior cover (2), slide (4) is contained in the pen core (3) and the end of chalk joins, teacher's pointer sleeve (6) is fixedlyed connected with outer sleeve (1), be with the hollow expansion link (5) more than in the teacher's pointer sleeve (6), in the above-mentioned many expansion links, the outer platform (10) of the thickest expansion link and the internal diameter of teacher's pointer sleeve (6) join, and the flexible external diameter of interior platform (9) and next root joins.