CN207758424U

CN207758424U - A kind of Dustproof chalk cover

Info

Publication number: CN207758424U
Application number: CN201721585077.5U
Authority: CN
Inventors: 杨方强
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-11-24
Filing date: 2017-11-24
Publication date: 2018-08-24
Anticipated expiration: 2027-11-24

Abstract

The utility model discloses a kind of Dustproof chalk cover, including pen body, it is characterised in that：Pen body one end is equipped with outer gear and prolongs, the pen body other end is equipped with interior gear and prolongs, outer gear is arranged with turncap on prolonging, turncap one end is equipped with indent cushion cap, swingle is connected in indent cushion cap center, the turncap other end is equipped with a placing groove, the hollow setting of swingle, and it is equipped with internal thread, swingle is threadedly coupled advance seat, and advance seat is equipped with pen stand, one group of telescopic rod is also arranged on advance seat, on gear prolongs including telescopic rod is fixedly connected, placing groove is threadedly coupled pen cap, and the interior gear that pen cap can also be threaded in pen body prolongs on this end.The utility model advantage has：Structure novel is convenient for carrying, economic and practical, easy to use.

Description

A kind of Dustproof chalk cover

Technical field

The invention belongs to tutor auxiliary platform equipment, and in particular to a kind of Dustproof chalk cover.

Background technology

Chalk is essential articles for use in teacher's daily teaching, and during use, the powder of many chalks can be stained on finger Dirt, this will certainly hurt skin, cause to waste in addition, chalk in use, easily snaps off.Although existing chalk sleeve It can solve the above problems, but have particular/special requirement to the shape of clamped chalk, and the chalk of normal tape taper cannot be met Requirement, versatility is strong；In addition, chalk sleeve is inconvenient to carry, when carrying, chalk need to be taken out from chalk sleeve, If do not taken out, chalk can be rubbed on clothes or on hand or be wrapped, to which later stage cleaning difficulty is big.Therefore, for the above problem Solution with regard to particularly important.

Invention content

The present invention has overcome the deficiencies of the prior art and provide a kind of structure novel, has been convenient for carrying, is economic and practical, user Just Dustproof chalk cover.

In order to achieve the above object, the technical solution adopted in the present invention is：A kind of Dustproof chalk cover, including pen body, feature It is：Described pen body one end be equipped with it is outer gear prolong, the pen body other end be equipped with it is interior gear prolong, it is described it is outer gear prolong on be arranged with rotation Cap, described turncap one end are equipped with indent cushion cap, connect swingle in indent cushion cap center, the turncap is another One end is equipped with a placing groove, the hollow setting of swingle, and is equipped with internal thread, and the swingle, which is threadedly coupled, to be promoted Seat, the advance seat are equipped with pen stand, are also arranged with one group of telescopic rod on the advance seat, the telescopic rod is fixedly connected on On interior gear prolongs, the placing groove is threadedly coupled pen cap, and the interior gear that the pen cap can also be threaded in pen body prolongs on this end.

Further, the indent cushion cap prolongs clamping with outer gear.

Further, the turncap can prolong upper suitable/counterclockwise rotation centered on pen body axis in the outer gear of pen body Turn.

Further, the turncap is integrally formed with swingle.

Further, the step-like setting of the pen stand can place the chalk of different-diameter.

Further, the pen cap end is equipped with chaining.

Further, the pen cap is equipped with internal thread, and corresponding placing groove is equipped with external screw thread, corresponds Pen body this end for prolonging of interior gear on be again provided with external screw thread.

Further, the advance seat is equipped with external screw thread, is matched with internal thread in swingle.

Compared with prior art, it is an advantage of the invention that：Avoid finger contamination chalk dust, it is therefore prevented that skin damage, It has protected chalk to fracture in use, has met the use of different-diameter chalk, be convenient for carrying simultaneously, economic and practical, structure is new Grain husk.

Description of the drawings

Fig. 1 is a kind of structural representation front view of Dustproof chalk cover of the present invention, and wherein pen cap is threaded on turncap.

Fig. 2 is a kind of structural representation front view of Dustproof chalk cover of the present invention, and wherein pen cap is threaded in pen body.

1. pen body in the figure, gear prolongs outside 2., and gear prolongs in 3., 4. turncaps, 5. indent platforms, 6. swingles, and 7. place Slot, 8. advance seats, 9. pen stands, 10. telescopic rods, 11. pen caps, 12. chainings.

Specific implementation mode

The embodiments given below are intended to further illustrate the invention, but is not to be construed as to the scope of the present invention Limitation, some the nonessential modifications and adaptations of those skilled in the art according to the content of present invention to the present invention still fall within this The protection domain of invention.

Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members Part or other component parts.

In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.

In fig. 1 and 2,1. pen body, gear prolongs outside 2., and gear prolongs in 3., 4. turncaps, 5. indent platforms, 6. swingles, and 7. Placing groove, 8. advance seats, 9. pen stands, 10. telescopic rods, 11. pen caps, 12. chainings.

A kind of Dustproof chalk cover, including pen body 1, it is characterised in that：1 one end of pen body is equipped with outer gear and prolongs 2,1 other end of pen body Prolong 3 equipped with interior gear, outer gear, which prolongs, is arranged with turncap 4 on 2,4 one end of the turncap is equipped with indent cushion cap 5, in indent cushion cap 5 Center connects swingle 6, and 4 other end of turncap is equipped with a placing groove 7,6 hollow setting of swingle, and is equipped with interior spiral shell Line, swingle 6 are threadedly coupled advance seat 8, and advance seat 8 is equipped with pen stand 9, one group of telescopic rod 10 is also arranged on advance seat 8, Telescopic rod 10 is fixedly connected with gear inside and prolongs on 3, and placing groove 7 is threadedly coupled pen cap 11, and pen cap 11 can also be threaded in pen body 1 Interior gear prolong on 3 this end.

Indent cushion cap 5 prolongs 2 clampings with outer gear.

Turncap 4 can prolong suitable/counterclockwise rotation on 2 centered on 1 axis of pen body in the outer gear of pen body 1.

Turncap 4 is integrally formed with swingle 6.

9 step-like setting of pen stand, can place the chalk of different-diameter.

11 end of pen cap is equipped with chaining 12.

Pen cap 11 is equipped with internal thread, and corresponding placing groove 7 is equipped with external screw thread, corresponding pen body 1 Interior keep off on this end for prolong 3 is again provided with external screw thread.

Advance seat 8 is equipped with external screw thread, is matched with internal thread in swingle 6.

Operation principle：

It is suitable/when rotating counterclockwise turncap 4, to make the swingle 6 of structure in conjunction while rotating, due to swingle 6 with Advance seat 8 is threadedly coupled, and advance seat 8 prolongs 3 with interior gear and connect by telescopic rod 10, to which advance seat 8 does piston motion, finally Drive 9 or so back and forth movement of pen stand.

In use, pen cap 11 is backed out from pen body 1, be screwed in the placing groove 7 of turncap 4, make the end face of pen cap 11 with The end face of turncap 4 in the same plane, is then placed on chalk on the pen stand 9 in swingle 6, then by rotating turncap 4, to adjust the length that chalk stretches out pen body 1；After use, pen cap 11 is backed out from the placing groove 7 of turncap 4, is screwed in In pen body 1, chalk can be placed in pen body 1, by the chaining 12 of setting, can tangle on key chain, to facilitate next time It uses.

Claims

1. a kind of Dustproof chalk cover, including pen body（1）, it is characterised in that：The pen body（1）One end is equipped with outer gear and prolongs（2）, described Pen body（1）The other end is equipped with interior gear and prolongs（3）, it is described it is outer gear prolong（2）On be arranged with turncap（4）, the turncap（4）On one end Equipped with indent cushion cap（5）, in the indent cushion cap（5）Center connects swingle（6）, the turncap（4）On the other end Equipped with a placing groove（7）, the swingle（6）Hollow setting, and it is equipped with internal thread, the swingle（6）Threaded connection pushes away Into seat（8）, the advance seat（8）It is equipped with pen stand（9）, the advance seat（8）On be also arranged with one group of telescopic rod（10）, institute State telescopic rod（10）Gear inside is fixedly connected with to prolong（3）On, the placing groove（7）It is threadedly coupled pen cap（11）, the pen cap（11） Pen body can also be threaded in（1）Interior gear prolong（3）On this end.

2. a kind of Dustproof chalk cover according to claim 1, it is characterised in that：The indent cushion cap（5）Prolong with outer gear（2） Clamping.

3. a kind of Dustproof chalk cover according to claim 1, it is characterised in that：The turncap（4）With pen body（1）Axis Centered on can be in pen body（1）Outer gear prolong（2）Upper suitable/counterclockwise rotation.

4. a kind of Dustproof chalk cover according to claim 3, it is characterised in that：The turncap（4）With swingle（6）One It is body formed.

5. a kind of Dustproof chalk cover according to claim 1, it is characterised in that：The pen stand（9）Step-like setting can be put Set the chalk of different-diameter.

6. a kind of Dustproof chalk cover according to claim 1, it is characterised in that：The pen cap（11）End is equipped with chaining （12）.

7. a kind of Dustproof chalk cover according to claim 6, it is characterised in that：The pen cap（11）Equipped with internal thread, with Corresponding placing groove（7）It is equipped with external screw thread, corresponding pen body（1）Interior gear prolong（3）This end on equally set There is external screw thread.

8. a kind of Dustproof chalk cover according to claim 1, it is characterised in that：The advance seat（8）It is equipped with external screw thread, With swingle（6）Middle internal thread matches.