CN101362412A

CN101362412A - Writing device using chalk

Info

Publication number: CN101362412A
Application number: CNA200810139722XA
Authority: CN
Inventors: 张源清
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-02
Filing date: 2008-09-02
Publication date: 2009-02-11

Abstract

The invention discloses a chalk writing device, which comprises a chalk barrel for holding chalk, a sliding block with a groove body is arranged in the chalk barrel, a spring for providing thrusting force for the sliding block is fixedly installed between the top end inside the chalk barrel and the sliding block, a chalk inserting opening is arranged at the lower part of the chalk barrel, a chalk clamping device is also installed at the lower part of the chalk barrel, a groove is arranged on the outer wall of the clamping device, and a rubber fastening ring is also sleeved at the outer side of the clamping device; the chalk writing device has the advantages that the structure is simple, the use is convenient, the skin is effectively protected, the chalk writing device is more hygienic and cleaner, and the chalk breaking phenomenon caused by uneven force for writing is also avoided.

Description

Writing device using chalk

Technical field

The present invention relates to the daily apparatus of a kind of teacher, relate in particular to a kind of writing and relatively cleaner writing device of chalk of being convenient to.

Background technology

The teacher is that free-hand use chalk is copied writing on the blackboard on class mostly at present, and the main component of chalk is calcium carbonate (lime stone) and calcium sulfate (gypsum), or contain a spot of calcium oxide, and all be the material of alkalescence, long-term contact can cause the skin of palm of hand angling, chap, refers to be out of shape symptoms such as (spoon first); And the teacher can constantly stir textbook when giving lessons, make on hand chalk powder be stained with on the textbook and suitcase in, unhygienic.On the other hand, when writing because the inhomogeneous chalk that causes easily of exerting oneself breaks to form waste.

Summary of the invention

Technical problem to be solved by this invention provides a kind of simple in structure, Writing device using chalk of easy fracture, clean health not when chalk is write.

For solving the problems of the technologies described above, technical scheme of the present invention is: Writing device using chalk, the pen container that comprises the splendid attire chalk, be provided with the slide block that has cell body in the described pen container, the promising described slide block of fixed installation provides the spring of thrust between described pen container inner tip and the described slide block, and described pen container bottom is provided with the insertion mouth of chalk, and described pen container bottom also is equipped with the chalk clamping device, described clamping device outer wall is provided with groove, and the described clamping device outside also is with the rubber tight loop.

Owing to adopted technique scheme, the invention has the beneficial effects as follows: during use, the pen container that grasps the splendid attire chalk just can be write, skin can directly not contact chalk, effectively protected skin on hand, can not be subjected to the calcination of chalk neutral and alkali material, relatively health; The outer wall of chalk clamping device is provided with groove, the clamping device outside also is with the rubber tight loop, utilizing the inner spring that is provided with of pen container by slide block the chalk that inserts to be released suitable length is convenient to write, utilize the elasticity of rubber tight loop, the rubber tight loop is drawn in the groove that is provided with on the clamping device outer wall, the rubber tight loop will shrink immediately make clamping device tightly clamp chalk, chalk double swerve not when having guaranteed to write; The present invention's inhomogeneous chalk fracture of making of exerting oneself in the time of can also preventing to write, simple in structure, easy to use.

Description of drawings

Accompanying drawing is the structural representation of the embodiment of the invention.

The specific embodiment

Be the structural representation of inventive embodiments as shown in drawings, Writing device using chalk, the pen container 1 that comprises the splendid attire chalk, be provided with the slide block 2 that has cell body in the described pen container 1, the promising described slide block 2 of fixed installation provides the spring 3 of thrust between described pen container 1 inner tip and the described slide block 2, described pen container 1 bottom is provided with the insertion mouth 4 of chalk, described pen container 1 bottom also is equipped with chalk clamping device 5, described clamping device 5 outer walls are provided with groove 6, and described clamping device 5 outsides also are with rubber tight loop 7.

During use, rubber tight loop 7 is taken, the ends that chalk 8 is thicker are inserted into and are arranged on having in the cell body on the pen container 1 inner slide block 2 by inserting mouthfuls 4, make it to be in compressive state with force compresses spring 3, chalk 8 is exposed clamping device 5 write length in right amount, then rubber tight loop 7 is enclosed within around the clamping device 5, utilize rubber tight loop 7 elasticity that it is drawn in the groove 6 that is provided with on clamping device 5 outer walls, clamping device 5 just tightly clamp chalk 8, more firm when writing.The purpose that cell body is set on slide block 2 is to prevent to come off owing to rubber tight loop 7 in the use, causes clamping device 5 lax fixedly chalks, makes chalk double swerve when writing.This fact Example can effectively protect on hand skin not to be subjected to the calcination of alkaline matter, and clean health can also prevent the chalk fracture, and is simple in structure, easy to use.

Claims

1. Writing device using chalk, it is characterized in that: the pen container that comprises the splendid attire chalk, be provided with the slide block that has cell body in the described pen container, the promising described slide block of fixed installation provides the spring of thrust between described pen container inner tip and the described slide block, described pen container bottom is provided with the insertion mouth of chalk, described pen container bottom also is equipped with the chalk clamping device, and described clamping device outer wall is provided with groove, and the described clamping device outside also is with the rubber tight loop.