CN201385493Y

CN201385493Y - Movable chalk cover

Info

Publication number: CN201385493Y
Application number: CN200920142241U
Authority: CN
Inventors: 陈学爱
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-07
Filing date: 2009-04-07
Publication date: 2010-01-20
Anticipated expiration: 2019-04-07

Abstract

A movable chalk cover comprises a casing, one end of the casing has an opening, and the other end is enclosed. The cover is characterized in that a spring is arranged in the casing, the length of the spring is slightly longer than that of the casing, the external end of the spring has a concave chalk support block, one to two notches are arranged on the opening of the casing, a Z-shaped steel block is arranged on the notch which is fixed on the casing through a moveable pin, one end of the steel block is a handle bar, the other end has a curved location piece, and a rubber band is arranged on the steel block and the notch of the casing to press the curved location piece. In the utility model, the casing is adopted to automatically extend out chalks, chalks can be automatically popped out by only pressing one hand when the chalk is used up until the writing is completed, hands do not need to directly contact chalks with using the chalk cover, the corrosion to hands by the chalk can be effectively prevented, the chalk is prevented from breaking, thereby reducing wastes of chalks. After finishing the writing, the chalk cover can be hung on the pocket, and the convenient carrying is provided.

Description

The Propelling chalk cover

Technical field

The utility model product relates to teaching aid, particularly chalk sleeve.

Technical background

Chalk is the still main writing implement in the teaching now, after each teacher uses up chalk, all can stay a lot of chalk dusts on hand, and is very unhygienic, particularly in winter, when washing one's hands inconvenience can to the user on hand skin cause very big infringement.

Summary of the invention

The purpose of the utility model product is to provide a kind of chalk sleeve of hygienic and convenient, just can stretch out chalk for writing as long as click during use.

The technical scheme of the utility model product is as follows:

It comprises: sleeve pipe, the length of sleeve pipe be greater than chalk length, its internal diameter than chalk diameter more greatly, sleeve pipe one end opening, other end sealing.Be provided with spring in the sleeve pipe, spring length is slightly longer than casing length, and the spring outer end is provided with a spill chalk tray.Sleeve pipe is provided with the pen card outward, is provided with 1-2 breach at the ferrule openings place, is provided with the Z bar card in indentation, there, and the steel cartoon is crossed removable pin and is fixed on the sleeve pipe, and steel card one end is a handle, and the other end is provided with the arc spacer, and the arc spacer is rubber or plastic products.Indentation, there at steel card and sleeve pipe is provided with rubber band to compress the arc spacer.Can also establish chalk pincers above the chalk sleeve pipe in addition, be used for pressing from both sides chalk in sleeve pipe.

The utility model adopts sleeve pipe to stretch out chalk automatically, very convenient during use, need only several seconds to writing from the dress chalk, when writing, chalk is write and is over as long as hand one can eject a bit again automatically by the Z bar card, till having write, directly do not contact chalk with its hand that writes, thus the waste that can prevent chalk adversary's corrosion effectively and prevent chalk fracture minimizing chalk.After having write word, can hang on the pocket, carry easily.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation of chalk sleeve pipe;

Fig. 3 is the structural representation of Z bar card;

Fig. 4 is the structural representation of spring;

Fig. 5 is the structural representation of chalk pincers.

Specific embodiment

Below in conjunction with accompanying drawing and example the utility model product is described:

The utility model comprises pen cap pipe 1, and the length of sleeve pipe 1 is greater than chalk 2 length, the internal diameter of sleeve pipe 1 than chalk 2 diameters more greatly, sleeve pipe 1 one end openings, other end sealing.Be provided with spring 3 in the sleeve pipe 1, the length of spring 3 is slightly longer than casing length, and the outer end of spring 3 is provided with a spill chalk tray 4.The outer pen card 5 that is provided with of sleeve pipe 1 is provided with 2 breach 10 at the opening part of sleeve pipe 1, and 10 places are provided with Z bar card 6 at breach, steel card 6 is fixed on the sleeve pipe 1 by removable pin 7, steel card 6 one ends are handle, and the other end is provided with arc spacer 8, and arc spacer 8 is rubber or plastic products.Breach 10 places at steel card 6 and sleeve pipe 1 are provided with rubber band 9 to compress arc spacer 8.On sleeve pipe 1, can also establish chalk pincers 11 in addition, be used for pressing from both sides chalk 2 in sleeve pipe 1.

Claims

1, a kind of Propelling chalk cover, comprise pen cap pipe (1),: sleeve pipe (1) one end opening, other end sealing, it is characterized in that: be provided with spring (3) in the sleeve pipe (1), the length of spring (3) is slightly longer than the length of sleeve pipe (1), be provided with a spill chalk tray (4) in the outer end of spring (3), opening part at sleeve pipe (1) is provided with 1-2 breach (10), locate to be provided with Z bar card (6) at breach (10), steel card (6) is fixed on the sleeve pipe (1) by removable pin (7), and an end of steel card (6) is a handle, the other end is provided with arc spacer (8), locates to be provided with rubber band (9) to compress arc spacer (8) at the steel card (6) and the breach (10) of sleeve pipe (1).

2, Propelling chalk cover as claimed in claim 1 is characterized in that: the length of sleeve pipe (1) is greater than chalk (2) length, the internal diameter of sleeve pipe (1) than the diameter of chalk (2) more greatly, the outer pen card (5) that is provided with of sleeve pipe (1).

3, Propelling chalk cover as claimed in claim 1 is characterized in that: establish chalk pincers (11) on the sleeve pipe (1), be used for pressing from both sides chalk (2) in sleeve pipe (1).