CN110341348A - A kind of chalk clamping device - Google Patents
A kind of chalk clamping device Download PDFInfo
- Publication number
- CN110341348A CN110341348A CN201910753521.7A CN201910753521A CN110341348A CN 110341348 A CN110341348 A CN 110341348A CN 201910753521 A CN201910753521 A CN 201910753521A CN 110341348 A CN110341348 A CN 110341348A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- semi
- chalk
- circular tube
- clamping device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
- B43K23/016—Holders for crayons or chalks
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The present invention discloses a kind of chalk clamping device, belong to teaching equipment technical field, the inventive system comprises: first sleeve, first sleeve has the through-hole of perforation, through-hole one end is plugged with the first that plug, the other end is threaded with push rod, connection component, including the first fixed sleeving being socketed in first sleeve, first fixed sleeving side is connected with the second fixed sleeving by connecting plate, wherein, the second clamping object is plugged on second fixed sleeving, second fixed sleeving includes the first semi-circular tube being fixedly connected with connecting plate, first semi-circular tube is by being hingedly connected with the second semi-circular tube, it is fastened between first semi-circular tube and the second semi-circular tube by fastener.The device of the invention can be clamped for chalk of different shapes, and be suitable for hand disability, height lower than personnel's use of writing height, and different users are effectively ensured and are normally carried out writing on blackboard.
Description
Technical field
The invention belongs to teaching equipment technical fields, and in particular to a kind of chalk clamping device.
Background technique
With the development of social modernization, popularizing for compulsory education establishes more and more schools, therewith between urban and rural areas
And come be chalk usage amount increase, and most teachers chalk used of attending class all is directly to grip in book on hand now
It writes, for a long time there is a great harm for the upper skin of opponent, and remaining segment chalk end cannot reuse to the end for writing, cause
The waste of resource, therefore propose that a variety of chalk clamping devices clamp so as to user's use chalk in the prior art, but
It is that existing chalk shape is different to have cylinder also to have polygon prism shape, as shown in Figure 1, for prior art chalk clamping device
For usually select circular hole casing bad to the chalk clamping effect of polygon prism shape to chalk clamping, and writing effect is not good enough,
Text dysgraphia is carried out especially for the place for being higher than user's height to writing height.
Summary of the invention
The purpose of the present invention is to provide a kind of chalk clamping devices, can be clamped for chalk of different shapes, and
It is used suitable for hand disability, height lower than the personnel of writing height, different users is effectively ensured and are normally carried out on blackboard
It writes.
A kind of technical solution that the present invention is taken to achieve the above object are as follows: chalk clamping device, comprising:
First sleeve, first sleeve have the through-hole of perforation, and through-hole one end is plugged with the first that plug, and other end screw thread connects
Push rod is connected to,
Connection component, including the first fixed sleeving being socketed in first sleeve, the first fixed sleeving side passes through connection
Plate is connected with the second fixed sleeving,
Wherein, the second clamping object is plugged on the second fixed sleeving, the second fixed sleeving includes being fixedly connected with connecting plate
The first semi-circular tube, the first semi-circular tube by being hingedly connected with the second semi-circular tube, between the first semi-circular tube and the second semi-circular tube lead to
Cross fastener fastening.
The present invention is used as the plug connector to object, such as the first that plug of grafting by setting first sleeve, this is first slotting
Connecing object is chalk, realizes clamping to chalk, and further setting connection component realizes the clamping to the second clamping object, second
Clamping object can be the chalk of polygon prism shape or hand lacks other fingers of thumb personage or pole used of imparting knowledge to students, when second
Clamping object, which solves common chalk clamping device in the prior art when being the chalk of polygon prism shape, can not effectively clamp prism-shaped
The problem of chalk, realizes the personnel of hand disability when the second clamping object is that hand lacks other fingers of thumb personage
The operation that can also be easily write on blackboard using chalk, solve hand lack thumb can not effectively taking chalk exist
The problem of writing on blackboard, when the second clamping object is to impart knowledge to students pole used, pole can make the device for being clamped with chalk in blackboard
Eminence is write, and writing range of the user of service on blackboard is improved, specifically, the second fixed sleeving of the invention is to pass through
First semi-circular tube and the second semi-circular tube are cooperated by fastener clamps the second clamping object placed between both,
It is not limited and is clamped by the shape of the second clamping object and be less prone to loosening, guarantee the writing effect of chalk when device uses.
Preferably, extension protrusion is all had on the first semi-circular tube and the second semi-circular tube, had in the protrusion of the first semi-circular tube
Fastener hole, has fastener in the protrusion of the second semi-circular tube, and fastener and fastener hole are cooperatively connected.Utilize fastener and fastener hole
Cooperation the folder on the second clamping object surface that the inner surface of the first semicircle pipe internal surface and the second semi-circular tube clamps it can be achieved
Tautness is held, the second clamping object is avoided to loosen.Fastener is bolt, and fastener hole is threaded through-hole.
Preferably, the first fixing sleeve side is equipped with through slot, and through slot is arranged in parallel with the first fixing sleeve axis.For suitable for not
First sleeve with size is expanded that can realize that the first fixing sleeve internal diameter is variable in such a way that the first fixing sleeve side opens up through slot
The adaptation range of big first fixing sleeve, and also the first fixed cover endoporus can be made to expand by way of clogging rubber block in through slot
The first sleeve that big its inside of conveniently taking is socketed.
Preferably, flexible body is equipped in first sleeve, wall is socketed the first that plug in flexible boot body.The material of flexible body
Matter selects silica gel material, by the way that flexible body is being arranged in first sleeve come between filling between the first that plug and first sleeve
Gap fixes the first that plug with respect to first sleeve, and it is cylindric to realize that the first that plug of institute's grafting in first sleeve can be
Or polygon prism shape and degree of being completely embedded height.
Preferably, the upper and lower side of flexible body is equipped with half through slot, and half through slot is right around the external wall interval setting of flexible boot
It is arc that flexible body, which is divided at least three pieces of limited blocks, limited block, and its surface is equipped with deformation through-hole.Pass through flexible body
Gap between fillable first that plug and first sleeve is set, the first that plug is reduced with this and generates rotation in first sleeve
The probability turned, and the upward thrust of push rod spiral that the first that plug bottom is effectively ensured is transferred to the first that plug and makes it upwards
It is mobile, flexible body is separated by the limited block that muti-piece has gap by half through slot, flexible body is made to be filled in first sleeve
And limited block can be extended to the gap between it to adjust the tension effects to the first that plug when the first gap between that plug,
Be compared to the mode in the prior art directly chalk being inserted into sleeve, the present invention can be improved first by the way that flexible body is arranged
The tautness of that plug and first sleeve makes the first that plug of pluggable different structure shape in first sleeve, and guaranty
Write stabilization.
Preferably, the threaded hole being threadedly coupled with push rod is equipped in first sleeve, push rod surface is equipped with corresponding with threaded hole
The external screw thread of threaded connection connect push rod with first sleeve using thread connecting mode, is adjusted by way of rotating push rod
Section push rod is connected to the length in first sleeve, the rotary motion of push rod is converted to the linear motion of the first that plug, with this
It pushes moving up for the first that plug in first sleeve, guarantees that the first that plug end exposes to outside first sleeve,
The feeding length for adjusting the first that plug according to actual needs is realized, is not easy stuck.
Preferably, the sponge body that the first that plug of first sleeve grafting end is socketed with, for teaching person
It is possible that the case where wrongly writing in writing process, but the amount wrongly write and little, teaching person time-consuming and laborious with blackboard eraser
Fault typically directly is removed with hand sassafras and thus causes the skin contact of dust Yu teaching person, compared to existing skill
The chalk chucking device of art, the present invention cover by the way that sea is arranged in first sleeve and directly can carry out sassafras except work, solution to blackboard
The blackboard eraser of taking of having determined is time-consuming and laborious or remove the problem of teaching person's health of damaging using hand sassafras.
Preferably, first sleeve connection push rod end is socketed with the second casing, and the second sleeve surface has an anti-skid chequer, and second
The anti-skidding material of the preferred absorbing sweat of casing material, it is contemplated that teaching person needs to carry out writing work on blackboard for a long time in teaching
It is whole, the comfort level of user's taking chalk clamping device is improved, in such a way that the second casing is set to reduce teaching
Degree of fatigue in person's writing process.
Compared with prior art, the invention has the benefit that the present invention is by being arranged first sleeve as to object
Plug connector, such as the first that plug of grafting, first that plug are chalk, realize the clamping to chalk, and further setting connects
Group is connect to realize the clamping to the second clamping object, the second clamping object can be the chalk of polygon prism shape or hand lacks thumb people
Other fingers of scholar or pole used of imparting knowledge to students, solve general in the prior art when the second clamping object is the chalk of polygon prism shape
Logical chalk clamping device can not effectively clamp the problem of prism-shaped chalk, when the second clamping object is that hand lacks thumb personage's
When other fingers, the operation that the personnel of hand disability can also easily be write on blackboard using chalk is realized, is solved
Hand lack thumb can not effectively taking chalk the problem of being write on blackboard, when the second clamping object 30 is pole used of imparting knowledge to students
When, pole can be such that the device for being clamped with chalk is write in blackboard eminence, improve writing range of the user of service on blackboard.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is existing cylindric chalk and polygon prism shape chalk schematic diagram；
Fig. 2 is a kind of schematic diagram of chalk clamping device of the invention；
Fig. 3 is the cross-sectional view of first sleeve；
Fig. 4 is the structural schematic diagram of connection component；
Fig. 5 is the structural schematic diagram of flexible body；
Fig. 6 is the structural schematic diagram of sea body.
Description of symbols: the first that plug of 10-；20- sponge body；30- second clamps object；40- connection component；41-
Fastener；The second semi-circular tube of 42-；The first semi-circular tube of 43-；44- fastener hole；The first fixed sleeving of 45-；46- through slot；47- connection
Plate；The second fixed sleeving of 48-；50- first sleeve；51- internal thread hole；The second casing of 60-；70- push rod；80- flexibility body；
Half through slot of 81-；82- limited block；83- deformation through-hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
Referring to fig. 2 shown in -6, a kind of chalk clamping device, comprising:
First sleeve 50, first sleeve 50 have the through-hole of perforation, and through-hole one end is plugged with the first that plug 10, the other end
It is threaded with push rod 70,
Connection component 40, including the first fixed sleeving 45 being socketed in first sleeve 50,45 side of the first fixed sleeving
It is connected with the second fixed sleeving 48 by connecting plate 47,
Wherein, the second clamping object 30 is plugged on the second fixed sleeving 48, the second fixed sleeving 48 includes and connecting plate 47
The first semi-circular tube 43 being fixedly connected, the first semi-circular tube 43 is by being hingedly connected with the second semi-circular tube 42,43 He of the first semi-circular tube
It is fastened between second semi-circular tube 42 by fastener 41.
The present invention is by setting first sleeve 50 as the plug connector to object, such as the first that plug of grafting 10, this
One that plug is chalk, realizes the clamping to chalk, and connection component 40 is arranged further to realize to the second clamping object 30
Clamping, the second clamping object 30 can be the chalk of polygon prism shape or hand lacks used in other fingers or the teaching of thumb personage
Pole, solving common chalk clamping device in the prior art when the second clamping object 30 is the chalk of polygon prism shape can not have
The problem of effect clamping prism-shaped chalk, realizes when the second clamping object 30 is that hand lacks other fingers of thumb personage
The operation that the personnel of hand disability can also easily be write on blackboard using chalk, solve hand lack thumb can not
The problem of writing on blackboard, when the second clamping object 30 is to impart knowledge to students pole used, pole can make to be clamped with effective taking chalk
The device of chalk is write in blackboard eminence, improves writing range of the user of service on blackboard, specifically, of the invention the
Two fixed sleevings 48 are cooperated by fastener 41 between both by the first semi-circular tube 43 and the second semi-circular tube 42
The the second clamping object 30 placed is clamped, and the shape for not clamped object 30 by second, which is limited and clamped, is less prone to loosening, guarantees
The writing effect of chalk when device uses.
Extension protrusion is all had on first semi-circular tube 43 and the second semi-circular tube 42, is had in the protrusion of the first semi-circular tube 43 tight
Solid hole 44, has fastener 41 in the protrusion of the second semi-circular tube 42, and fastener 41 and fastener hole 44 are cooperatively connected.Utilize fastener
41 and fastener hole 44 cooperation can be achieved that the inner surface of 43 inner surface of the first semi-circular tube and the second semi-circular tube 42 clamps it the
The clamping fastener degree on two clamping 30 surfaces of object, avoids the second clamping object 30 from loosening.Fastener 41 is bolt, and fastener hole 44 is
Threaded through-hole.
First fixing sleeve, 45 side is equipped with through slot 46, and through slot 46 is arranged in parallel with 45 axis of the first fixing sleeve.For suitable for
Various sizes of first sleeve 50 is that can realize the first fixing sleeve 45 in such a way that 45 side of the first fixing sleeve opens up through slot 46
Internal diameter is variable, expands the adaptation range of the first fixing sleeve 45, and can also make by way of clogging rubber block in through slot 46
First fixing sleeve, 45 inner hole expands the first sleeve 50 that its inside of conveniently taking is socketed.
Flexible body 80 is equipped in first sleeve 50, flexible 80 inner wall of body is socketed the first that plug 10.Flexible body 80
Material selection silica gel material, fill the first that plug 10 and first set by the way that flexible body 80 is arranged in first sleeve 50
Gap between pipe 50 keeps the opposite first sleeve 50 of the first that plug 10 fixed, realizes first of institute's grafting in first sleeve 50
That plug can be cylindric or polygon prism shape and degree of being completely embedded height.
The upper and lower side of flexible body 80 is equipped with half through slot 81, and half through slot 81 is arranged around flexible 80 outer wall interval of body,
At least three pieces of limited blocks 82 are divided into flexible body 80, limited block 82 is arc, and its surface is equipped with deformation through-hole 83.Pass through
Gap between fillable first that plug 10 of the setting of flexible body 80 and first sleeve 50, reduces the first that plug 10 with this
The probability of rotation is generated in first sleeve 50, and the thrust that 70 spiral of push rod that 10 bottom of the first that plug is effectively ensured is upward
It is transferred to the first that plug 10 to move it up, flexible body 80 is separated by the limit that muti-piece has gap by half through slot 81
Position block 82, limited block 82 can be between it when flexible body 80 being made to be filled in gap between first sleeve 50 and the first that plug 10
Gap extend to adjust the tension effects to the first that plug 10, be compared to and chalk be directly inserted into sleeve in the prior art
The tautness of the first that plug 10 and first sleeve 50 can be improved by the way that flexible body 80 is arranged in interior mode, the present invention, makes the
First that plug 10 of pluggable different structure shape in sleeve 50, and guarantee to write and stablize.
The threaded hole 51 being threadedly coupled with push rod 70 is equipped in first sleeve 50,70 surface of push rod is equipped with right with threaded hole 51
The external screw thread that should be threadedly coupled connect push rod 70 with first sleeve 50 using thread connecting mode, passes through rotating push rod 70
Mode adjusts the length that push rod 70 is connected in first sleeve 50, and the rotary motion of push rod 70 is converted to the first that plug 10
Linear motion, moving up for the first that plug 10 in first sleeve 50 is pushed with this, guarantees 10 end of the first that plug
Portion exposes to outside first sleeve 50, also achieves the feeding length for adjusting the first that plug according to actual needs, is not easy stuck.
The sponge body 20 that 50 the first that plug of grafting of first sleeve, 10 end is socketed with, for teaching person
It is possible that the case where wrongly writing in writing process, but the amount wrongly write and little, time-consuming and laborious with blackboard eraser, teaching person is logical
Often directly removing fault with hand sassafras thus causes the skin contact of dust Yu teaching person, compared with the prior art
Chalk chucking device, the present invention by first sleeve 50 be arranged sea cover 20 can directly to blackboard carry out sassafras remove work,
The blackboard eraser that solves the problems, such as to take it is time-consuming and laborious or using hand sassafras except teaching person's health can be damaged.
First sleeve 50 connects 70 end of push rod and is socketed with the second casing 60, and 60 surface of the second casing has anti-skid chequer, the
The anti-skidding material of the preferred absorbing sweat of two casings, 60 material, it is contemplated that teaching person needs to be write on blackboard for a long time in teaching
Carefully and neatly, the comfort level of user's taking chalk clamping device is improved, in such a way that the second casing 60 is set to reduce teaching
Degree of fatigue in worker's writing process.
Embodiment 2:
Chalk clamping device of the invention is in actual use: it is divided into three kinds of use states:
The first use state: chalk is inserted into first sleeve 50 by teaching person, fills powder by flexible body 80
Gap between pen and first sleeve 50, and it is suitable for cylindric chalk or polygon prism shape chalk, teaching person is by holding
Take the second casing 60 that can be write on blackboard, it can also be another to clamp by the second fixed sleeving 48 of connection group valence 40
Sponge body 20 also can be used directly when there is clerical error such as the different chalk of color or polygon prism shape chalk for chalk
Sassafras is except at clerical error.
Second of use state: book position is higher makes teaching person can not for or institute lower for teaching person's height
When specified altitude assignment position is write, teaching pole used is clamped by the second fixed sleeving 48 of connection component 40, is realized
Expand and writes range.
The third use state: for the teaching person of hand disability, thumb or other fingers are especially the absence of
The personnel of missing can use this hair clip of the invention by the fixation of the second fixing sleeve 48 and hand of connection component 40 to realize
Device is held, realization is write on blackboard.
Chalk clamping device material therefor of the invention removes flexible body 80 and selects silica gel, and other materials, which is both preferably, to be moulded
Material, be beneficial to reduce the device of the invention weight, convenient for instructor use, be also beneficial to the production cost of the present apparatus reduction and
Obtain market.
Device provides the use feedback of teaching teacher according to the present invention, and the usage experience of teacher is preferable, most feedbacks
Content is several: 1. no longer directly to be contacted as follows with chalk with hand, does not have to worry " chalk hand ", solving finger skin becomes thick
It is rough, dry, the problems such as finger tip even occurs chapping, bleed, pain；2. writing range in teaching effectively to be expanded, it is not necessarily to
Higher position is write using movable blackboard；3. for directly abandoning compared to former chalk end, saving big
The chalk of amount.
According to statistics: a teaching class needs nearly 30 box of chalk filled with 100, one box of chalk of 100 dresses every year on average
About 10 yuan, using the chalk end of discarding up to nearly 5-6 box, at least 4 boxes can be saved using chalk clamping device of the invention
Chalk end abandon the case where occur, single year 4 box chalks of savings of as each class, if by the device of the invention promote the use of press
One university, 100 classes calculate, and can save within 1 year the quantity of 400 box chalks, can effectively save school's spending.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (8)
1. a kind of chalk clamping device, comprising:
First sleeve (50), the first sleeve (50) have the through-hole of perforation, and described through-hole one end is plugged with the first that plug
(10), the other end is threaded with push rod (70),
Connection component (40), including the first fixed sleeving (45) being socketed on first sleeve (50), first fixed sleeving
(45) side is connected with the second fixed sleeving (48) by connecting plate (47),
Wherein, the second clamping object (30) is plugged on second fixed sleeving (48), second fixed sleeving (48) includes
The first semi-circular tube (43) being fixedly connected with connecting plate (47), first semi-circular tube (43) is by being hingedly connected with the second semicircle
It manages (42), is fastened between first semi-circular tube (43) and the second semi-circular tube (42) by fastener (41).
2. a kind of chalk clamping device according to claim 1, it is characterised in that: first semi-circular tube (43) and second
Extension protrusion is all had on semi-circular tube (42), and there are fastener hole (44) in the protrusion of first semi-circular tube (43), described second
There are fastener (41) in the protrusion of semi-circular tube (42), the fastener (41) and fastener hole (44) are cooperatively connected.
3. a kind of chalk clamping device according to claim 1, it is characterised in that: the first fixing sleeve (45) side is set
Have through slot (46), the through slot (46) is arranged in parallel with the first fixing sleeve (45) axis.
4. a kind of chalk clamping device according to claim 1, it is characterised in that: be equipped in the first sleeve (50) soft
Property body (80), it is described flexibility body (80) inner wall socket the first that plug (10).
5. a kind of chalk clamping device according to claim 4, it is characterised in that: the upper and lower side of the flexibility body (80)
It is equipped with half through slot (81), half through slot (81) is around flexible body (80) outer wall interval setting, to flexible body (80) point
At least three pieces of limited blocks (82) are cut into, the limited block (82) is arc, and its surface is equipped with deformation through-hole (83).
6. a kind of chalk clamping device according to claim 1, it is characterised in that: be equipped in the first sleeve (50) with
The threaded hole (51) that push rod (70) is threadedly coupled, push rod (70) surface are equipped with the outer of threaded connection corresponding with threaded hole (51)
Screw thread.
7. a kind of chalk clamping device according to any claim from 1 to 6, it is characterised in that: the first set
The sponge body (20) that pipe (50) grafting the first that plug (10) end is socketed with.
8. a kind of chalk clamping device according to any claim from 1 to 6, it is characterised in that:
First sleeve (50) connection push rod (70) end is socketed with the second casing (60), the second casing (60) surface tool
There is anti-skid chequer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753521.7A CN110341348A (en) | 2019-08-15 | 2019-08-15 | A kind of chalk clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753521.7A CN110341348A (en) | 2019-08-15 | 2019-08-15 | A kind of chalk clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110341348A true CN110341348A (en) | 2019-10-18 |
Family
ID=68185077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910753521.7A Pending CN110341348A (en) | 2019-08-15 | 2019-08-15 | A kind of chalk clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110341348A (en) |
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| US6905271B1 (en) * | 2002-11-26 | 2005-06-14 | Ronald J. Short | Finger-mounted marking device |
| KR200426595Y1 (en) * | 2006-07-06 | 2006-09-13 | 현 덕 신 | FINGER's SUPPORT IMPLEMENT |
| CN200998956Y (en) * | 2006-10-30 | 2008-01-02 | 王思宇 | Rotary chalk cap |
| US20080205038A1 (en) * | 2007-02-27 | 2008-08-28 | Becnel Mark C | Chalk holding device with light |
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| CN201483953U (en) * | 2009-08-29 | 2010-05-26 | 梁玉新 | convenient chalk sleeve |
| CN201559418U (en) * | 2009-12-03 | 2010-08-25 | 曹轲捷 | Multifunctional chalk cover |
| CN103182885A (en) * | 2013-04-07 | 2013-07-03 | 高启元 | Chalk cover |
| CN107571663A (en) * | 2017-10-24 | 2018-01-12 | 宋恒曦 | Adjustable appliance for holding pen |
| CN206926432U (en) * | 2017-03-22 | 2018-01-26 | 河南工程学院 | Chalk clamp |
| CN107685565A (en) * | 2017-08-29 | 2018-02-13 | 许昌市建安区第实验学校 | A kind of Novel chalk clamp |
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2019
- 2019-08-15 CN CN201910753521.7A patent/CN110341348A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6905271B1 (en) * | 2002-11-26 | 2005-06-14 | Ronald J. Short | Finger-mounted marking device |
| KR200426595Y1 (en) * | 2006-07-06 | 2006-09-13 | 현 덕 신 | FINGER's SUPPORT IMPLEMENT |
| CN200998956Y (en) * | 2006-10-30 | 2008-01-02 | 王思宇 | Rotary chalk cap |
| US20080205038A1 (en) * | 2007-02-27 | 2008-08-28 | Becnel Mark C | Chalk holding device with light |
| CN201366869Y (en) * | 2009-01-19 | 2009-12-23 | 谭颖彤 | Chalk sleeve without sticking hands |
| CN201483953U (en) * | 2009-08-29 | 2010-05-26 | 梁玉新 | convenient chalk sleeve |
| CN201559418U (en) * | 2009-12-03 | 2010-08-25 | 曹轲捷 | Multifunctional chalk cover |
| CN103182885A (en) * | 2013-04-07 | 2013-07-03 | 高启元 | Chalk cover |
| CN206926432U (en) * | 2017-03-22 | 2018-01-26 | 河南工程学院 | Chalk clamp |
| CN107685565A (en) * | 2017-08-29 | 2018-02-13 | 许昌市建安区第实验学校 | A kind of Novel chalk clamp |
| CN107571663A (en) * | 2017-10-24 | 2018-01-12 | 宋恒曦 | Adjustable appliance for holding pen |
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Application publication date: 20191018 |