CN203344543U

CN203344543U - Chalk sleeve

Info

Publication number: CN203344543U
Application number: CN 201320364645
Authority: CN
Inventors: 戴建华; 冒莉
Original assignee: Wuxi Institute of Commerce
Current assignee: Wuxi Institute of Commerce
Priority date: 2013-06-25
Filing date: 2013-06-25
Publication date: 2013-12-18
Anticipated expiration: 2023-06-25

Abstract

The utility model discloses a chalk sleeve comprising a shell body. The shell body is a containing cavity with an open end, a spring connected with the bottom of the containing cavity is arranged in the containing cavity, the other end of the spring is connected with a flat plate, chalk enables the spring to be in a compressed state through the flat plate, the side wall of the containing cavity is provided with a locking device used for fixing the chalk, the outer side of the containing cavity is provided with a laser pen and a pointer, and the laser pen and the pointer are respectively connected with the shell body. The chalk sleeve enables a teacher to prepare a teaching aid conveniently, and meanwhile enables the chalk to be fully used, and waste is reduced.

Description

A kind of chalk sleeve

Technical field

The utility model relates to a kind of chalk sleeve.

Background technology

Teachers ' teaching be unable to do without chalk, and chalk dust is a very large injury to teacher, and breathing for a long time chalk dust can be influential to respiratory tract, and when simultaneously pushing, the Contact chalk dust can make hand dry and cracked.Occurred various chalk sleeves in prior art, contacted with chalk for preventing the pushing time, simultaneously, the part that chalk exposes is very short, and not only frangibility not, also can take full advantage of chalk end, thereby reduce waste,

In addition, teacher is when teaching, need to make indication to corresponding position on blackboard, lower position on blackboard, teacher's custom is made indication with teacher's pointer, higher position on blackboard, common teacher's pointer is difficult to make indication, so just need to indicate with laser pen, therefore, teacher before class needs special standby chalk sleeve, teacher's pointer, laser pen, also need that textbook, other facilities of teaching such as computer, some unnecessary work have been increased, in use also may be because will look for corresponding teaching aid, wasted the time, interrupted thinking, brought very large trouble simultaneously.

Summary of the invention

Technical problem to be solved in the utility model is: for shortcoming and defect of the prior art, the utility model provides a kind of chalk sleeve, teacher's pointer and laser pen are set on chalk sleeve, have solved the problem that needs standby multiple teaching aid before the class-teaching of teacher, saved the time simultaneously.

The utility model, for solving the problems of the technologies described above, adopts following technical scheme:

A kind of chalk sleeve, comprise housing, the container cavity that described housing is an end opening; The spring be connected with bottom is set in described container cavity, and the spring other end is connected with flat board, and chalk makes spring in compressive state by flat board, and described container cavity sidewall arranges locking device, for fixing chalk; Described container cavity outside arranges respectively laser pen, teacher's pointer, and described laser pen, teacher's pointer are connected with described housing respectively.

Also comprise the teacher's pointer fixture be arranged on housing, teacher's pointer is arranged on the teacher's pointer fixture.

Described locking device is clamping device or spiral knob; Described locking device is arranged at the container cavity opening part.

Described teacher's pointer fixture is hinge or screw.

Described teacher's pointer is collapsible teacher's pointer or Telescopic pointer.

Compared with prior art, the utlity model has following beneficial effect:

(1) integrated laser pen and teacher's pointer on chalk sleeve, avoid staff directly to contact with chalk, chalk dust can directly not sticked on staff, there are common and two kinds of functions of electronic teacher pointer, avoid the long-time and blackboard close contact of teacher, facilitated teacher to prepare teaching aid.

(2) locking device is selected clamping device or spiral knob, and is arranged at the container cavity opening part, makes chalk still can use very in short-term, and not only frangibility not, also can take full advantage of chalk end, thereby reduce waste.

The accompanying drawing explanation

Fig. 1 is the utility model structured flowchart.

Wherein, being labeled as in figure: 1-chalk; The 2-locking device; The 3-housing; The 4-flat board; The 5-spring; The 6-button cell box; The 7-teacher's pointer; The 8-laser pen; The 9-laser head; 10-teacher's pointer fixture.

The specific embodiment

Below in conjunction with accompanying drawing, the technical solution of the utility model is elaborated:

A kind of chalk sleeve, comprise housing 3, the container cavity that described housing 3 is an end opening; The spring 5 is connected with bottom is set in described container cavity, and spring 5 other ends are connected with flat board 4, and chalk 1 makes spring 5 in compressive state by flat board 4, and described container cavity sidewall arranges locking device 2, for fixing chalk 1; Described container cavity outside arranges respectively laser pen 8, teacher's pointer 7, and described laser pen 8, teacher's pointer 7 are connected with described housing 3 respectively.

Also comprise the teacher's pointer fixture 10 be arranged on housing 3, teacher's pointer 7 is arranged on teacher's pointer fixture 10.

Described locking device 2 is clamping device or spiral knob; Described locking device 2 is arranged at the container cavity opening part.

Described teacher's pointer fixture 10 is hinge or screw.

As shown in Figure 1, a kind of chalk sleeve, comprise housing 3 to its concrete structure, and described housing 3 comprises two container cavities, and be fixedly connected with bottom two container cavities, and the opening direction of two container cavities is contrary; The spring 5 be fixedly connected with bottom wherein is set in the first container cavity, and spring 5 other ends are connected with flat board 4, and chalk 1 makes spring 5 in compressive state by flat board 4, and described the first container cavity sidewall arranges locking device 2, for fixing chalk 1; Described the second container cavity inner bottom part arranges button cell box 6, and described button cell box 6 tops arrange laser pen 8, and the laser head 9 of described laser pen 8 is arranged at the opening part of the second container cavity; The collapsible teacher's pointer of the second container cavity arranged outside, described teacher's pointer fixture 10 is arranged at the second container cavity lateral wall opening part, and collapsible teacher's pointer is arranged on the teacher's pointer fixture.

The present embodiment is usingd spiral knob as locking device 2, the using method of hinge as teacher's pointer fixture 10 these devices of analysis of usining;

Described spring 5 does not occur under elastically-deformable state, dull and stereotyped 4 are positioned at spiral button place, the spiral button of outwarding winding, chalk is pushed to container cavity, by dull and stereotyped 4 Compress Springs 5, after chalk 1 is pushed into container cavity, the length that the part be exposed is accustomed to using with the teacher is advisable, now screw spiral button, spiral button is pressed on the sidewall of container cavity chalk 1, the part that in use procedure, the discovery chalk exposes is too short, the spiral button of can outwarding winding on the other hand, make chalk 1 release container cavity by the elastic force of spring 5, in order to prevent that chalk 1 is ejected, another hand is lived chalk 1, release suitable length, screw spiral button.

Described two container cavities can be used as integral type and connect, and share a bottom, or between two container cavities, a plate washer are set, and spring 5 is fixed on baffle plate.

It is parallel with housing 3 that described teacher's pointer 7 can be arranged at the outside of described housing 3.

Claims

1. a chalk sleeve, comprise housing, it is characterized in that: the container cavity that described housing is an end opening; The spring be connected with bottom is set in described container cavity, and the spring other end is connected with flat board, and chalk makes spring in compressive state by flat board, and described container cavity sidewall arranges locking device, for fixing chalk; Described container cavity outside arranges respectively laser pen, teacher's pointer, and described laser pen, teacher's pointer are connected with described housing respectively.

2. chalk sleeve according to claim 1, it is characterized in that: also comprise the teacher's pointer fixture be arranged on housing, teacher's pointer is arranged on the teacher's pointer fixture.

3. chalk sleeve according to claim 1, it is characterized in that: described locking device is clamping device or spiral knob; Described locking device is arranged at the container cavity opening part.

4. chalk sleeve according to claim 2, it is characterized in that: described teacher's pointer fixture is hinge or screw.

5. chalk sleeve according to claim 1 and 2, it is characterized in that: described teacher's pointer is collapsible teacher's pointer or Telescopic pointer.