CN201979880U

CN201979880U - Chalk sleeve

Info

Publication number: CN201979880U
Application number: CN2011200981019U
Authority: CN
Inventors: 郑苏格
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-29
Filing date: 2011-03-29
Publication date: 2011-09-21
Anticipated expiration: 2021-03-29

Abstract

The utility model discloses a chalk sleeve, which comprises a shell and a sleeve body, wherein the shell has a hollow cylindrical structure; an elastic sleeve is fixedly connected with the inner surface of the shell; one end of the shell is provided with a through hole, and the other end of the shell is fixedly connected with a telescopic rod; the tail end of the telescopic rod is provided with a laser pen; the end, which is provided with the through hole, of the shell is in threaded connection with the sleeve body; and the surface of the shell is provided with an electronic watch. When the chalk sleeve is used, a chalk can be inserted into the shell from the through hole, and a hand of a teacher touches the shell during writing on a blackboard, so that the skin of the hand can be prevented from being injured by the chalk; and when the chalk sleeve is used as a pointer, the length of the telescopic rod can be adjusted, so that the telescopic rod has the function of the pointer; the laser pen can be used when a projector is used by the teacher for teaching; and the electronic watch on the surface of the shell brings convenience for the teacher to master teaching time. The utility model has the advantages that: the chalk sleeve has a simple structure, is convenient to use, has new functions and brings great convenience for the teachers when the chalk sleeve is used.

Description

A kind of chalk sleeve

Technical field the utility model relates to a kind of teaching aid, especially a kind of chalk sleeve.

Background technology is well-known, chalk sleeve is that instructors is when writing writing on the blackboard, avoid one of requisite articles for use that hand injured by chalk, but existing chalk sleeve function singleness, can not satisfy the use needs of instructors, for example: existing chalk sleeve does not have the function of teacher's pointer, does not have the function of being convenient to take the time, and existing chalk sleeve does not have the function of laser pen, and these have brought inconvenience all for the use of instructors.

The summary of the invention the purpose of this utility model is to provide a kind of chalk sleeve that has teacher's pointer, laser pen function concurrently, to satisfy the use needs of instructors.

The utility model comprises shell and body, and shell is the hollow circuit cylinder body structure, and in the affixed resilient sleeve of the inner surface of shell, is provided with open-work at an end of shell, at the affixed expansion link of the other end of shell, and is provided with laser pen at the end of expansion link; The end that shell is provided with open-work is threaded with body; Surface at shell is provided with electronic watch.

After adopting said structure, during use, chalk can be inserted into enclosure from through-hole position, hand and housing contacts when instructors is write writing on the blackboard can prevent that hand skin from being injured by chalk; When using, can adjust the length of expansion link, make the function of expansion link performance teacher's pointer as teacher's pointer; Laser pen can use projecting apparatus to say in instructors and use class hour; The electronic watch of case surface is convenient to instructors and is grasped instructional blocks of time.

The utility model has the advantages that: simple in structure, easy to use, given chalk sleeve new function, bring greater convenience for the use of instructors.

Description of drawings Fig. 1 is a schematic perspective view of the present utility model.

The specific embodiment is in the schematic perspective view of a kind of chalk sleeve shown in Figure 1, comprise shell 1 and body 2, shell is the hollow circuit cylinder body structure, and in the affixed resilient sleeve 3 of the inner surface of shell, end at shell is provided with open-work 4, at the affixed expansion link 5 of the other end of shell, and be provided with laser pen 6 at the end of expansion link; The end that shell is provided with open-work is threaded with body; Be provided with electronic watch 7 on the surface of shell.

Claims

1. a chalk sleeve comprises shell and body, it is characterized in that: shell is the hollow circuit cylinder body structure, and in the affixed resilient sleeve of the inner surface of shell, end at shell is provided with open-work, at the affixed expansion link of the other end of shell, and is provided with laser pen at the end of expansion link; The end that shell is provided with open-work is threaded with body; Surface at shell is provided with electronic watch.