CN202507738U

CN202507738U - Chalk holder

Info

Publication number: CN202507738U
Application number: CN2012201423531U
Authority: CN
Inventors: 刘平; 赵德众; 王业路; 李程程; 安柏祥; 邵玉; 刘俊超
Original assignee: 刘平
Priority date: 2012-04-07
Filing date: 2012-04-07
Publication date: 2012-10-31
Anticipated expiration: 2022-04-07

Abstract

The utility model relates to a chalk holder for holding a chalk. The chalk holder comprises a hollow conical shell, two rotating bodies, a twisting body, rotating body gears and a twisting body gear, wherein the two rotating bodies are parallel with each other and can be rotationally connected to the shell; the twisting body is rotationally connected to the shell; one ends of the two rotating bodies close to the twisting body are provided with the rotating body gears; the twisting body is provided with the twisting body gear which is meshed with the two rotating body gears; and a bearing platform is clamped in spiral grooves of the two rotating bodies. Because the chalk sleeve is protected by the shell, the situation of touching the chalk with a hand is avoided and the skin of the hand of a user is favorably protected. When the chalk exposed out of the chalk holder is used up, the chalk can be stretched out of the chalk holder by rotating the rotating bodies, so that the chalk can be used conveniently and rapidly; because the chalk is pressed by an elastic body in the chalk holder, so that the chalk is unlikely to break up when being used; and moreover, even if a short section of the chalk is left, the chalk still can be used.

Description

A kind of chalk folder

Technical field

The utility model relates to a kind of stationery, is specifically related to a kind of chalk folder that is used for the clamping chalk.

Background technology

Well-known chalk is a kind of writing implement that the numerous teachers and the masses often use, because chalk is made up of calcium carbonate and calcium sulfate, in use fractures easily so chalk is generally very crisp.And people use in the process of chalk and often are stained with the chalk powder, and calcium carbonate and calcium sulfate are alkaline matter, so skin is on hand had certain excitant.Along with the increasing of content written, chalk is used shorter and shorter in addition, and the good clamping master chalk of user's finger often when using certain-length so most of chalk head has all been thrown away, can not re-use, and causes waste.

Summary of the invention

The utility model is in order to overcome the deficiency of above technology, provides a kind of and adopted protector that chalk is wrapped can prevent to point to be infected with powder, to avoid chalk often to rupture, increase the chalk folder that chalk effectively uses length.

The technical scheme that its technical problem that overcomes the utility model adopts is:

The chalk folder of the utility model; Comprise hollow conical shell, two be parallel to each other and be rotationally connected with rotary body in the housing, be rotationally connected with reversing body, rotary body gear and reversing the body gear of housing; Two rotary bodies all are equipped with the rotary body gear near an end that reverses body; Reverse body and be equipped with and reverse the body gear and be meshed with two rotary body gears, cushion cap is clipped in the helicla flute of two rotary bodies.

The smaller part shell of half shell constituted outside above-mentioned housing was fixed in by outer half shell and through bayonet socket.

The openend of said housing is equipped with elastomer.

The beneficial effect of the utility model is: this chalk folder is owing to outer chlamydate protection, so effectively avoided the situation favourable protection user skin on hand of hand contact chalk.After the chalk that is exposed to the chalk folder uses up; Thereby reversing body, rotation just can make chalk can conveniently use chalk from stretching out in chalk presss from both sides; Because flexible body is pushed down chalk and can be fractureed in the chalk use in the chalk folder, and can when chalk is only remaining a bit of, designate so can use.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the generalized section of the utility model;

Among the figure, 1. outer half shell, 2. rotary bodies, 3. cushion caps 4. reverse body 5. bayonet sockets 6. elastomers 7. smaller part shells 8. chalks 9. rotary body gears 10. and reverse the body gear.

The specific embodiment

Further specify below in conjunction with accompanying

drawing

1,2 pairs of the utility model of accompanying drawing.

The smaller part shell 7 of half shell 1 constituted the shape that overall structure is similar to chalk outside the chalk folder of the utility model was fixed in by outer half shell 1 and through bayonet socket 5.Half shell 1 was interior and parallel with outer half shell 1 outside two rotary bodies 2 were rotationally connected with, and reversed body 4 and was rotationally connected with outside outer half shell 1, and cushion cap 3 is clipped in the helicla flute of two rotary bodies 2.Earlier smaller part shell 7 is opened during use, chalk 8 is put into the chalk folder, the tail end of chalk 8 places on the cushion cap 3.After putting chalk 8 well, buckle well smaller part shell 7, it is as a whole that chalk is pressed from both sides into, can avoid chalk because of firmly fractureing and avoiding chalk contact staff.

Two rotary bodies 2 are equipped with rotary body gear 9 near an end that reverses body 4; Reversing body 4 is equipped with and reverses body gear 10 and be meshed with two rotary body gears 9; Because reversing body gear 10 is meshed with two rotary body gears 9; Can drive 2 rotations of two rotary bodies so body 4 is reversed in rotation, rotary body 2 rotates cushion cap 3 is moved axially along rotary body 2.Thereby realize that chalk 8 can reverse the length that body 4 controls are exposed to the chalk folder through rotation, and after the chalk head that exposes uses up, continue rotation rotary body 2 and can make chalk protruding, can proceed to use, simple and easy to use.

Outer half shell 1 is equipped with elastomer 6 with the openend of smaller part shell 7, and elastomer 6 can be pushed down chalk 8 after outer half shell 1 and smaller part shell 7 merge, and prevents that chalk 8 is because of gravity effect landing powder delivery pen clip.And because elastomer 6 is close to the openend of chalk folder, thus the pressure of 6 pairs of chalks 8 of elastomer fixedly chalk 8 make not frangible of chalk 8, and chalk 8 so can use in only surplus following a bit of an of situation, saved the consumption of chalk 8.

Claims

1. a chalk presss from both sides; It is characterized in that: comprise hollow conical shell, two be parallel to each other and be rotationally connected with rotary body (2) in the housing, be rotationally connected with reversing body (4), rotary body gear (9) and reversing body gear (10) of housing; Two rotary bodies (2) all are equipped with rotary body gear (9) near an end that reverses body (4); Reverse body (4) and be equipped with and reverse body gear (10) and be meshed with two rotary body gears (9), cushion cap (3) is clipped in the helicla flute of two rotary bodies (2).

2. chalk folder according to claim 1 is characterized in that: described housing is fixed in smaller part shell (7) formation of outer half shell (1) by outer half shell (1) and through bayonet socket (5).

3. chalk folder according to claim 1, it is characterized in that: the openend of housing is equipped with elastomer (6).