CN201922726U

CN201922726U - Chalk sleeve

Info

Publication number: CN201922726U
Application number: CN201120054886XU
Authority: CN
Inventors: 陈阿永
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-04
Filing date: 2011-03-04
Publication date: 2011-08-10
Anticipated expiration: 2021-03-04

Abstract

The utility model relates to a chalk sleeve comprising a main body of a casing, wherein the main body of the casing is in a hollow structure, the inside of the hollow structure is provided with a baffle plate, two cavity bodies are formed at both sides of the baffle plate, the cavity body at the front end of the main body of the casing is a chalk placing chamber which can be used for placing chalks, the head end of the chalk placing chamber is provided with a clamping mechanism, the cavity body at the back end of the main body of the casing is an eraser placing chamber, and the eraser placing chamber is provided with eraser heads which can be used for erasing chalk writings. The chalk sleeve has a simple structure, is easy to manufacture and is easy to popularize; in addition, the chalk sleeve has the functions of chalk erasers, the frequency of taking the chalk erasers by a teacher is reduced, and the classroom efficiency is enhanced; and meanwhile, the probability that the teacher directly contacts with chalk dust also is further reduced.

Description

A kind of chalk sleeve

Technical field

The utility model relates to teaching aid, the chalk sleeve that particularly a kind of chalk of packing into can write.

Background technology

At present, most of school instructions be unable to do without chalk, teacher writes on blackboard on class and directly pinches chalk with hand, hand directly contacts with chalk, hand will inevitably be stained with a lot of chalk dusts, bring certain hidden danger for teacher's health, and teacher has a class at every turn and will wash one's hands, this has also increased the use amount of water when increasing trouble to teacher.In addition; the phenomenon that chalk fractures appears in teacher regular meeting when writing with chalk word, and chalk bring certain difficulty can for writing of teacher when reaching certain-length and form the chalk head; the chalk head of this moment tends to be dropped, and this has just caused the very big waste of chalk.

Appearing at of chalk sleeve solved above problem to a certain extent, had a variety of chalk sleeves on the market, and the structure of some chalk sleeve is relatively complicated, and its price is higher relatively, can not well popularize.In addition, teacher keeps away when using chalk to write and wrong word unavoidably occurs, and a lot of teachers specially do not go to take chalkboard eraser that wrong word is wiped, but directly wipe with finger in order to improve classroom efficiency, have so just occurred the problems referred to above again.For this reason, we provide a kind of chalk sleeve that has the chalkboard eraser function simple in structure, that production cost is low to be very important.

Summary of the invention

The utility model provides a kind of chalk sleeve, to solve the chalk sleeve complex structure, the price height that exist in the prior art, not possess problem such as chalkboard eraser function.

The utility model adopts following technical scheme: a kind of chalk sleeve, comprise housing body, this housing body is a hollow structure, this hollow structure inside is provided with a dividing plate, these dividing plate both sides form two cavitys, put the chamber of the cavity of this housing body front end for putting chalk, and this is put a chamber head end and is provided with clamp mechanism, the cavity of this housing body rear end is wiped the chamber for putting, and this is put and wipes the chamber and be provided with the wiping head that can wipe the chalk mark.

Described clamp mechanism comprises a jaw and a sliding sleeve that can be complementary with this jaw, this jaw is the hollow structure that is truncated cone-shaped that is provided with some otch, this sliding sleeve rear end is provided with internal thread, and described housing body corresponding position is provided with the external screw thread that can be meshed with this internal thread.

Described otch is and is distributed in described jaw sidewall symmetrically, and this incision length direction is parallel with described housing body length direction.

Described wiping head removably is inserted in described putting and wipes the chamber.

By above-mentioned description to the utility model structure as can be known, compare, the utlity model has following advantage: the manufacturing simple in structure, easy of this chalk sleeve, easily popularize with prior art; In addition, this chalk sleeve has the chalkboard eraser function, has reduced the number of times that teacher takes chalkboard eraser, improved classroom efficiency, simultaneously, has also further reduced the possibility that teacher directly contacts chalk dust.

Description of drawings

Fig. 1 is chalk sleeve 1/4th cutaway views.

Fig. 2 is the enlarged drawing of local Y among Fig. 1.

The specific embodiment

The specific embodiment of the present utility model is described with reference to the accompanying drawings.

With reference to Fig. 1, Fig. 2, a kind of chalk sleeve comprises housing body, and these dividing plate 15 both sides form two cavitys, put the chamber of the cavity of this housing body front end for putting chalk, and this is put a chamber head end and is provided with clamp mechanism,

A kind of chalk sleeve, comprise housing body 1, this housing body 1 is a hollow structure, this hollow structure inside is provided with a dividing plate 15, this dividing plate 1 both sides form two cavitys, and the cavity of this housing body 1 front end is put a chamber 11 for what put chalk 3, and this is put a chamber 11 head ends and is provided with

clamp mechanism

12,13, the cavity of this housing body 1 rear end is wiped chamber 14 for putting, and this is put and wipes chamber 14 and be provided with the wiping 2 that can wipe the chalk mark; The setting that this wipes 2 makes this chalk sleeve have the function of chalkboard eraser, reduced the number of times that teacher takes chalkboard eraser, improved classroom efficiency, simultaneously, also further reduced the possibility that teacher directly contacts chalk dust.

Described

clamp mechanism

12,13 comprises a jaw 12 and a sliding sleeve 13 that can be complementary with this jaw 12, this jaw 12 is for being provided with the hollow structure that is truncated cone-shaped of some otch 120, these sliding sleeve 13 rear ends are provided with internal thread, and described housing body 1 corresponding position is provided with the external screw thread 121 that can be meshed with this internal thread.In actual use, one end of chalk 3 is pushed along these jaw 12 ports, expose to chalk 3 and suitable to stop to push when writing word length, make these chalk 3 bared ends pass this sliding sleeve 13 then, make the internal thread of this sliding sleeve 13 make this jaw 12 compress chalk 3 to reach the fixedly purpose of chalk 3 with external screw thread 121 contacts of this housing body 1 and by its relative rotation, when chalk 3 bared ends have been write need regulate the time, the sliding sleeve 13 of only need outwarding winding is pulled out suitable length with chalk 3 and is screwed sliding sleeve 13 again and get final product.

In addition, described otch 120 is and is distributed in described jaw 12 sidewalls symmetrically, and these otch 120 length directions are parallel with described housing body 1 length direction.

The cleaning of described wiping for convenience 2, this wipings 2 removably is inserted in the described wiping chamber 14 of putting.

Above-mentioned only is the specific embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. chalk sleeve, comprise housing body, it is characterized in that: described housing body is a hollow structure, this hollow structure inside is provided with a dividing plate, these dividing plate both sides form two cavitys, put the chamber of the cavity of this housing body front end for putting chalk, and this is put a chamber head end and is provided with clamp mechanism, the cavity of this housing body rear end is wiped the chamber for putting, and this is put and wipes the chamber and be provided with the wiping head that can wipe the chalk mark.

2. a kind of chalk sleeve as claimed in claim 1, it is characterized in that: described clamp mechanism comprises a jaw and a sliding sleeve that can be complementary with this jaw, this jaw is the hollow structure that is truncated cone-shaped that is provided with some otch, this sliding sleeve rear end is provided with internal thread, and described housing body corresponding position is provided with the external screw thread that can be meshed with this internal thread.

3. a kind of chalk sleeve as claimed in claim 2 is characterized in that: described otch is and is distributed in described jaw sidewall symmetrically, and this incision length direction is parallel with described housing body length direction.

4. a kind of chalk sleeve as claimed in claim 1 is characterized in that: described wiping head removably is inserted in described putting and wipes the chamber.