CN208428839U

CN208428839U - Chalk cover

Info

Publication number: CN208428839U
Application number: CN201820352542.9U
Authority: CN
Inventors: 叶光进
Original assignee: CHENGDU SONGQIMING TECHNOLOGY Co Ltd
Current assignee: CHENGDU SONGQIMING TECHNOLOGY Co Ltd
Priority date: 2018-03-15
Filing date: 2018-03-15
Publication date: 2019-01-25
Anticipated expiration: 2028-03-15

Abstract

The utility model provides a kind of Chalk cover, the pen cap includes pen tube, driving assembly and crawl block, hollow portion is provided in pen tube, driving assembly and crawl block are separately positioned in hollow portion, and extending direction of the driving assembly driving crawl block in pen tube along hollow portion moves；Grabbing block includes bottom plate and multiple side plates, multiple side plates are arranged along the outer edge of bottom plate, crawl section is provided between multiple side plates, the free end of side plate is obliquely installed far from crawl section, using the above structure, after shortening with the length using chalk of chalk, the length for the chalk that user can drive driving assembly that chalk adjustment pen tube shell is pushed to write, the length of the chalk outside the pen cap is set to be in length appropriate, so that user's chalk during writing is not easy to break.

Description

Chalk cover

Technical field

The utility model relates to educational aid fields, more particularly, to a kind of Chalk cover.

Background technique

Currently, still using chalk in the enterprising andante book of blackboard on the teaching classroom in China, but in order to reduce on classroom Dust pollution, gradually using water-soluble chalk replace common chalk.But during writing on the blackboard, user is also to need basis The length of chalk come the fixed point for the chalk that determines to hold steadily, but slightly firmly when, the chalk in hand is easily broken off, post-rift chalk It is difficult to continue on for writing on the blackboard, causes certain waste.

Summary of the invention

Chalk Chalk cover not easy to break when the main purpose of the utility model is to provide a kind of writing on the blackboard.

To realize above-mentioned main purpose, Chalk cover provided by the utility model includes pen tube, driving assembly and grabs Block is taken, hollow portion is provided in pen tube, driving assembly and crawl block are separately positioned in hollow portion, driving assembly driving crawl block Extending direction in pen tube along hollow portion moves；

Crawl block includes bottom plate and multiple side plates, and multiple side plates are arranged along the outer edge of bottom plate, is set between multiple side plates It is equipped with crawl section, the free end of side plate is obliquely installed far from crawl section.

It can be seen that chalk is adjacent with the bottom plate in crawl block and is arranged in crawl section, multiple side plates are in chalk periphery To drive chalk to move along the extending direction of hollow portion, so that chalk enters pen when driving assembly drives crawl block mobile Guan Zhong, after shortening with the length using chalk of chalk, user can drive driving assembly to push chalk adjustment pen tube shell book The length for the chalk write makes the length of the chalk outside the pen cap be in length appropriate, so that user's chalk during writing It is not easy to break, and user, during writing, user no longer directly contacts chalk, to play centainly to the skin of user Protective effect.

Further embodiment is that side plate includes first segment and second segment, and the first end bending of first segment is arranged and and bottom plate Connection, the first end of the second end connection second segment of first segment, the second end of second segment are tilted away from the direction of crawl section Setting.

As it can be seen that pen tube is cylinder, the first end that first segment is connect with bottom plate is bent setting, can better adapt in pen tube Circular inner wall reduces and generates friction during grabbing block in in-pipe, and side plate is divided into two sections, each section with bottom plate it Between have different angles, guarantee side plate preferably can be coated on chalk periphery outside, it is also possible to guarantee crawl block being capable of band Dynamic chalk can smoothly enter into pen tube.

Further embodiment is, side plate is class rectangle, second segment include first while, second while and third side, third side Setting first while second while between, third while connect first while one end be bent setting, third while connect second while one End also bending setting.

As it can be seen that third is at first, the connection between the second side is fillet connection, avoid multiple sides in cladding chalk When periphery, side plate scratching chalk too much is avoided.

Further embodiment is that the angle between first segment and bottom plate is 93 degree, the angle between second segment and first segment It is 15 degree.

As it can be seen that the angle between first segment and bottom plate is 93 degree, the angle between second segment and first segment is 15 degree, is being protected Card side plate can be preferably coated on outside the periphery of chalk, it is also possible to guarantee that crawl block is able to drive chalk and can smoothly enter into pen tube It is interior,

Further embodiment is that the free end of width from fixing end to the side plate of side plate of side plate becomes larger.

As it can be seen that be gradually increased can be when chalk be placed on crawl section to the width of side plate, multiple side plates can be coated preferably In the periphery of chalk, when driving assembly driving crawl block is mobile, chalk can be easier to enter in pen tube.

Further embodiment is that driving assembly includes fixed block, drive block and spring, and fixed block is tilted to be provided with One through slot, drive block run through the first through slot, are provided with articulated section on drive block, articulated section is articulated with fixation in the first through slot Block, articulated section are arranged between the first end of drive block and the second end of drive block, and the first end of drive block is provided with protruding block, The inner wall of the adjacent pen tube of protruding block, the second end of drive block are provided with handle block, and handle block drives protruding block in the first through slot Rotation, the first end of the second end connecting spring of drive block, the second end connection fixing block of spring, spring are arranged in the first through slot It is interior.

As it can be seen that drive first end rotation when pressing the second end of drive block, make the first end of drive block not with pen tube Inner wall is adjacent, enables driving assembly to drive crawl block after an in-pipe, the second end for discharging drive block, in the bullet of spring Under power, the first end of drive block resets, and first end abuts pen tube inner wall, so that fixed drive block, begins to use powder convenient for user Pen.

Further embodiment is that the second through slot is provided in pen tube, and the second through slot is connected to hollow portion, and handle portion setting exists In second through slot.

As it can be seen that handle portion is arranged outside pen tube, the length of chalk in pen tube is adjusted in time convenient for user.

Further embodiment is that the multiple through-holes axially set gradually along pen tube are additionally provided in pen tube.

As it can be seen that user can observe the length of chalk in pen tube by through-hole.

Detailed description of the invention

Fig. 1 is the structure chart of the utility model Chalk cover embodiment.

Fig. 2 is the schematic diagram that drive block is connect with crawl block in the utility model Chalk cover embodiment.

Fig. 3 is the top view that drive block is connect with crawl block in the utility model Chalk cover embodiment.

Fig. 4 is the cross-sectional view that the A-A in Fig. 3 is obtained.

Fig. 5 is the top view that block is grabbed in the utility model Chalk cover embodiment.

Fig. 6 is the left view that block is grabbed in the utility model Chalk cover embodiment.

The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.

Specific embodiment

The Chalk cover of the utility model is applied in daily teaching writing on the blackboard, and chalk is placed on the crawl section of crawl block, more A side plate, thus when driving assembly drives crawl block mobile, drives chalk to move along the extending direction of pen tube in chalk periphery, To which chalk enters in pen tube, after shortening with the length using chalk of chalk, user can drive driving assembly to push chalk The length for adjusting the chalk that pen tube shell is write, makes the length of the chalk outside the pen cap be in length appropriate, so that user is in book Chalk is not easy to break during writing.

Referring to Fig. 1, the Chalk cover of the utility model includes pen tube 1, driving assembly 2 and crawl block 3, is set in pen tube 1 It is equipped with hollow portion 11, driving assembly 2 and crawl block 3 are separately positioned in hollow portion 11, and the driving crawl block 3 of driving assembly 2 is in pen Extending direction in pipe 1 along hollow portion 11 moves.

Referring to fig. 2, it grabs on block 3 and is provided with multiple pilot holes 30, be provided in driving assembly 2 and cooperate company with pilot hole 30 The assembling block 2 connect, to complete driving assembly 2 and grab the connection between block 3.Referring to fig. 2, Fig. 3 and Fig. 4, driving assembly 2 Including fixed block 21, drive block 22 and spring 23, fixed block 21 is tilted to be provided with the first through slot 211, and drive block 22 runs through First through slot 211 is provided with articulated section 223 on drive block 22, and articulated section 223 is articulated with fixed block 21 in the first through slot 211, Articulated section 223 is arranged between the first end 221 of drive block 22 and the second end 222 of drive block 22.The first end of drive block 22 221 are provided with protruding block 224, and protruding block 224 abuts the inner wall of pen tube 1, in the present embodiment, the first end 221 of drive block 22 It can contact, connect with the fixed block 21 in the first through slot 211 in the first end 221 of the tilted setting of the first through slot 211, drive block 22 When touching the setting direction of protruding block 224 perpendicular to hollow portion 11 extending direction so that protruding block 224 preferably abuts pen tube 1 Inner wall, keep the frictional force between protruding block 224 and the inner wall of pen tube 1.The second end 222 of drive block 22 is provided with handle block 225, in the present embodiment, the extending direction of the second end 222 of drive block 22 is parallel with the extending direction of hollow portion 11, handle block 225 is arc-shaped, is preferably adjacent to the contact surface of finger, and handle block 225 drives protruding block 224 to rotate in the first through slot 211.It drives The first end of 222 connecting spring 23 of second end of motion block 22, the second end connection fixing block 21 of spring 23, the setting of spring 23 is the In one through slot 211, in the present embodiment, the elastic force direction of spring 23 and the second end 222 of drive block 22 are vertical.When pressing drives Drive first end 221 to rotate when the second end 222 of block 22, make the protruding block 224 of the first end 221 of drive block 22 not with pen tube 1 Inner wall it is adjacent, enable driving assembly 2 that crawl block 3 to be driven to move in pen tube 1, after the second end 222 for discharging drive block 22, Under the elastic force of spring 23, the first end 221 of drive block 22 resets, and first end 221 abuts the inner wall of pen tube 1, so that fixed drive Motion block 22 begins to use chalk convenient for user.

Referring to Fig. 5, Fig. 6, grabbing block 3 includes bottom plate 31 and multiple side plates 32, and multiple side plates 32 are along the outside of bottom plate 31 Edge is arranged, and crawl section 33 is provided between multiple side plates 32, and the free end of side plate 32 is in tilted layout far from crawl section 33.In this reality It applies in example, pen tube 1 is cylinder, and correspondingly fixed block 21 is cylinder, and the bottom plate 31 grabbed in block 3 is also circle.At this In embodiment, the quantity of side plate 32 is four, and four side plates 32 are equidistantly arranged along the outer edge of bottom plate 31, since bottom plate 31 is in Circle, so that side plate 32 is arc-shaped, the degree of central angle corresponding to side plate 32 is 40 degree at this time.

Side plate 32 includes first segment 321 and second segment 322, and the first end bending setting of first segment 321 simultaneously connects with bottom plate 31 It connects, the first end of the second end connection second segment 322 of first segment 321, the second end of second segment 322 is set far from the inclination of crawl section 33 It sets, pen tube 1 is cylinder, and one end that first segment 321 is connect with bottom plate 31 is bent setting, can better adapt to the circle of pen tube 1 Inner wall reduces and generates friction during grabbing the movement in pen tube 1 of block 3.It is two sections, each section and bottom plate 31 that side plate 32, which is divided to, Between have different angles, guarantee side plate 32 preferably can be coated on chalk periphery outside, it is also possible to guarantee crawl 3 energy of block Enough chalk is driven to can smoothly enter into pen tube 1.

The projection of shape of side plate 32 is class rectangle, and second segment 322 includes first at 323, second 324 and third side 325, third when 325 are arranged first 323 and second between side 324, third in 325 connection first 323 one end bending Setting, third 324 one end in 325 connection second are also bent setting.Third at 325 and first 323, second side 324 it Between connection be fillet connection, avoid multiple side plates 32 when coating chalk periphery, avoid the scratching chalk too much of side plate 32.

Angle between first segment 321 and bottom plate 31 is 93 degree, and the angle between second segment 322 and first segment 321 is 15 Degree, outside the periphery that guarantee side plate 32 preferably can be coated on chalk, it is also possible to it is smooth to guarantee that crawl block 3 is able to drive chalk Into in pen tube.

The free end of the width of side plate 32 from fixing end to the side plate 32 of side plate 32 becomes larger, and the width of side plate 32 is gradually Increasing can be when chalk be placed on crawl section 33, and multiple side plates 32 can preferably be coated on the periphery of chalk, and driving assembly 2 drives When dynamic crawl block 3 movement, chalk can be easier to enter in pen tube 1.

As another embodiment, side plate 32 is one section from fixing end towards the inclined linear type side plate in free end.

Chalk with crawl block 3 in bottom plate 31 it is adjacent and be arranged in crawl section 33, multiple side plates 32 chalk periphery from And when driving assembly 2 drives crawl block 3 mobile, drive chalk to move along the extending direction of hollow portion 11, so that chalk enters In pen tube 1, after shortening with the length using chalk of chalk, user can drive driving assembly 2 to push outside chalk adjustment pen tube 1 The length for the chalk that shell is write, makes the length of the chalk outside the pen cap 1 be in length appropriate, so that user is during writing Chalk is not easy to break, and user, during writing, user no longer directly contacts chalk, so that the skin to user plays The effect of protection.

The second through slot 12 is provided in pen tube 1, the second through slot 12 is connected to hollow portion 11, and fixed block 21 is arranged in hollow portion When in 11, handle portion 225 is arranged in the second through slot 12, and handle portion 225 is arranged outside pen tube 1, adjusts pen in time convenient for user The length of chalk in pipe 1.

Be additionally provided with multiple through-holes 13 in pen tube 1, the axis of each through-hole 13 perpendicular to pen tube 1 axis, and in pen On the axial direction of pipe 1, multiple through-holes 13 are sequentially arranged, and user can observe the length of chalk in pen tube 1 by through-hole 13.

The front end of pen tube is detachably connected with a pen cap, and the rear end of pen tube can be fixedly connected with a plug.

Finally it is emphasized that the above is only the preferred embodiment of the present invention, it is not limited to this reality With novel, for those skilled in the art, the utility model can have various change and change, all in the utility model Spirit and principle within, any modification, equivalent substitution, improvement and etc. done should be included in the protection model of the utility model Within enclosing.

Claims

1. Chalk cover, it is characterised in that: the pen cap includes pen tube, driving assembly and crawl block, setting in the pen tube There is hollow portion, the driving component and the crawl block are separately positioned in the hollow portion, described in the driving component driving Extending direction of the block in the pen tube along the hollow portion is grabbed to move；

The crawl block includes bottom plate and multiple side plates, and multiple side plates are arranged along the outer edge of the bottom plate, Duo Gesuo It states and is provided with crawl section between side plate, the free end of the side plate is obliquely installed far from the crawl section.

2. Chalk cover according to claim 1, it is characterised in that:

The side plate includes first segment and second segment, and the first end bending of the first segment is arranged and connect with the bottom plate, institute The second end for stating first segment connects the first end of the second segment, and the second end of the second segment is away from the crawl section Direction is obliquely installed.

3. Chalk cover according to claim 2, it is characterised in that:

The side plate is class rectangle, the second segment include first while, second while and third side, the third side be arranged in institute State first at described second between, one end when connecting described first of the third is bent setting, and the third side connects The one end for connecing second side is also bent setting.

4. Chalk cover according to claim 3, it is characterised in that:

Angle between the first segment and the bottom plate is 93 degree, and the angle between the second segment and the first segment is 15 Degree.

5. Chalk cover according to claim 1 or 4, it is characterised in that:

The free end of the width of the side plate from fixing end to the side plate of the side plate becomes larger.

6. Chalk cover according to claim 1, it is characterised in that:

The driving component includes fixed block, drive block and spring, and the fixed block is tilted to be provided with the first through slot, described Drive block runs through first through slot, is provided with articulated section on the drive block, the articulated section is cut with scissors in first through slot It is connected to the fixed block, the articulated section is arranged between the first end of the drive block and the second end of the drive block, institute The first end for stating drive block is provided with protruding block, the inner wall of the adjacent pen tube of the protruding block, the second end of the drive block It is provided with handle block, the handle block drives the protruding block to rotate in first through slot, the second end of the drive block The first end of the spring is connected, the second segment of the spring connects the fixed block, and the spring setting is logical described first In slot.

7. Chalk cover according to claim 6, it is characterised in that:

The second through slot is provided in the pen tube, second through slot is connected to the hollow portion, and the handle portion is arranged in institute It states in the second through slot.

8. Chalk cover according to claim 1, it is characterised in that:

The multiple through-holes being axially sequentially arranged along the pen tube are additionally provided in the pen tube.