CN202491568U

CN202491568U - Multifunctional chalk cover

Info

Publication number: CN202491568U
Application number: CN2012201101472U
Authority: CN
Inventors: 冀兰英
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-22
Filing date: 2012-03-22
Publication date: 2012-10-17
Anticipated expiration: 2022-03-22

Abstract

The utility model relates to a multifunctional chalk cover. The multifunctional chalk cover is composed of a chalk body, a base seat, a clamping groove, a shell, a protrusion, a chalk lid, a laser light and the like. By means of the multifunctional chalk cover, the problem that the chalk is directly contacted with hands of teachers is avoided, harm to the hands is reduced, and a laser pen on the end of the multifunctional chalk cover can be used as a pointer.

Description

A kind of multifunctional chalk cover

Technical field

The utility model relates to the teaching appliance technical field, the chalk sleeve that especially a kind of teacher's writing on the blackboard is used.

Background technology

People in life process, particularly the teacher in the process of giving lessons, the chalk instrument that is absolutely necessary.But traditional chalk is after having used major part, and remaining chalk head can not continue to use and can only lose; And the teacher all directly contacts chalk when using chalk, because chalk contains harmful substance, can produce injury to teacher's hand, influences the healthy of teacher, and when using teacher's pointer, changes back and forth also and can cause inconvenience.

The utility model content

The purpose of the utility model is in order to overcome above-mentioned technical disadvantages with not enough, a kind of multifunctional sanitary chalk sleeve to be provided, and this chalk sleeve can avoid chalk directly to contact with teacher's hand, minimizing adversary's injury; Can also utilize the laser pen of end to use as teacher's pointer.

The technical scheme that the utility model technical solution problem adopts is: a kind of multifunctional chalk cover; It comprises chalk body, base, draw-in groove, shell, convexity, chalk lid and laser lamp; Said chalk body is embedded in the middle of the draw-in groove, and the draw-in groove bottom is fixedly connected on the base, and the draw-in groove outer cover is connected to shell; Said draw-in groove and shell are through being threaded, through the length of rotation case scalable chalk body; Being fixed with convexity on the said shell, caves in said convex center position; Said chalk body is an interference fit with cooperating of draw-in groove; Also be provided with the chalk lid on the said shell; Base is provided with the laser pen circuit that laser lamp, battery and switch are formed.

The beneficial effect that the utility model had is:

The utility model reasonable in design, easy to operate, can avoid directly contacting with teacher's hand, reduce adversary's injury, and can use remaining chalk head to make full use of in traditional chalk, practiced thrift resource, reduced educational costs.

Description of drawings

Accompanying drawing 1 is the structural generalized section of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done following detailed description.

As shown in the figure; The multifunctional chalk cover of the utility model comprises chalk body 1, base 2, draw-in groove 3, shell 4, convexity 5, chalk lid 6 and laser lamp L, and said chalk body 1 is embedded in the middle of the draw-in groove 3, and chalk can be changed according to operating position at any time; Draw-in groove 3 bottoms are fixedly connected on the base 2; Draw-in groove 3 outer cover are connected to shell 4, and said draw-in groove 3 and shell 4 are through being threaded, through the length of rotational shell 4 scalable chalk bodies 1; Being fixed with convexity 5 on the said shell 4, caves in said protruding 5 centers; Said chalk body 1 is an interference fit with cooperating of draw-in groove 3; Also be provided with chalk lid 6 on the said shell 4; Base 2 is provided with the laser pen circuit that laser lamp L, battery and switch are formed.

Owing to adopted said structure, when need not use chalk, chalk lid 6 is covered shell 4, prevent that chalk from becoming damp and rotten in put procedure; Serve as a teacher when needs use chalk, only need chalk be covered 6 and take off, hold base 2; Rotational shell 4 then, and the chalk body 1 that will be positioned at shell 4 screws out, and hand-held protruding 5 recess is write on blackboard and got final product; Exhaust up to chalk; After being positioned at shell chalk body and using, can traditional chalk body be fixed on again on the draw-in groove, repeat aforesaid operations and can continue to use.On base 2, circuit is set, this circuit has laser lamp L, open switch after, laser lamp L can launch laser forward, makes things convenient for the teacher to work as teacher's pointer and uses.

Claims

1. multifunctional chalk cover; It comprises chalk body, base, draw-in groove, shell, convexity, chalk lid and laser lamp; Said chalk body is embedded in the middle of the draw-in groove, and the draw-in groove bottom is fixedly connected on the base, and the draw-in groove outer cover is connected to shell; Said draw-in groove and shell are through being threaded, through the length of rotation case scalable chalk body; Being fixed with convexity on the said shell, caves in said convex center position; Said chalk body is an interference fit with cooperating of draw-in groove; Also be provided with the chalk lid on the said shell; Base is provided with the laser pen circuit that laser lamp, battery and switch are formed.