CN203957618U - The anti-waste chalk sleeve of a kind of antiseized hand - Google Patents
The anti-waste chalk sleeve of a kind of antiseized hand Download PDFInfo
- Publication number
- CN203957618U CN203957618U CN201420420531.1U CN201420420531U CN203957618U CN 203957618 U CN203957618 U CN 203957618U CN 201420420531 U CN201420420531 U CN 201420420531U CN 203957618 U CN203957618 U CN 203957618U
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- CN
- China
- Prior art keywords
- screw mandrel
- chalk
- rotating base
- nut
- rotating disc
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- 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.)
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Abstract
The utility model discloses the anti-waste chalk sleeve of a kind of antiseized hand, belong to office teaching aid field.The utility model comprises body, rotating base, screw mandrel, rotating disc, nut and rubbing head, and body is the hollow barrel-like structure of upper end angle shape; Rotating base periphery is provided with some grooves, and rotating base is arranged on the lower end of body; Rotating base center is vertically fixed with screw mandrel, and screw mandrel is positioned at body inside, and rotating disc center is fixed with nut, and the external screw thread of screw mandrel and the internal thread of nut are supporting, and nut sleeve is located on screw mandrel rotating disc is moved up and down in body; Rubbing head is arranged at the below of rotating base, and rubbing head is surrounded by a flannelette napped fabric layer outward, and the material of described body, rotating base, screw mandrel, rotating disc and nut is plastics.The utility model avoids hand directly to contact chalk, protection skin, and chalk sleeve top bezel designs, make chalk once back-out long section do not allow yet easily broken fall, convenient and practical.
Description
Technical field
The utility model relates to office teaching aid technical field, more particularly, relates to the anti-waste chalk sleeve of a kind of antiseized hand.
Background technology
Chalk is conventional instrument in school's office education activities, is for general on blackboard and writes.The chalk in ancient times is made with natural chalk conventionally, now multiplex other material replace, the composition of chalk is a kind of white depositions of calcium sulfate, be not easy to be decomposed, particle is larger than dust, the chalk of domestic use mainly contains two kinds of common chalk and dust-free chalks, and its main component is calcium carbonate and calcium sulfate, or containing a small amount of calcium oxide.Although chalk uses convenient, but attend class in present classroom, most of chalk using is all directly exposed, the pushing time directly contacts chalk, can opponent damage like this, and part teachers association directly removes to wipe wrongly written character with hand accidentally writing when wrongly written character can not find blackboard eraser when another, skin is caused to further injury.And directly use exposed chalk, there will be chalk to use very short time and be not easy to hold, and easily thrown away the problem of waste.
Today that a large amount of fantasies are emerged in large numbers, there is the technical scheme addressing the above problem to a certain extent open, as China Patent No.: ZL201320467587.8, the applying date: on July 26th, 2013, invention and created name is: Chalk casing, this technical scheme discloses one and has not hindered hand, Chalk casing easy to carry and can carry out wrongly written character amendment, comprise the cylindrical housings that two ends are penetrating, housing below is provided with twists dish, in housing, be provided with slide block, slide block middle part is provided with the groove of opening at slide block downside, on groove inwall, be provided with internal thread, twist on dish and be provided with the push rod corresponding to groove, on push rod, be provided with the external screw thread corresponding to internal thread on groove inwall, in inner walls, be provided with axial chute, on slide block, be provided with sliding pin corresponding to chute, twist dish lower end and be provided with wiping piece, twist dish side and be connected with link by cotton rope.This technical scheme has solved to a certain extent the exposed chalk of direct use and has hindered hand and should not hold short chalk and abandon the problem of waste, but, the top of this Chalk casing is flat mouth shape, if the each use of chalk is only back-outed a little, because chalk consumption is very fast, need ceaselessly to back-out, use and inconvenience; If chalk is once back-outed very long one section, the wasting phenomenon of easily fracture, or meeting, so this technical scheme need to further be improved.
Utility model content
1. the technical problem that utility model will solve
The purpose of this utility model is to overcome the deficiency that in prior art, the direct exposed use of chalk is easily hindered hand and easily wasted, and provides a kind of antiseized hand anti-waste chalk sleeve.Adopt the technical solution of the utility model, chalk is inserted in chalk sleeve, avoids hand directly to contact chalk, protection skin, and chalk sleeve top bezel designs, make chalk once back-out long section do not allow yet easily broken fall, convenient and practical.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
The anti-waste chalk sleeve of a kind of antiseized hand of the present utility model, comprises body, rotating base, screw mandrel, rotating disc and nut, and described body is hollow barrel-like structure, and this body upper end is angle shape; Described rotating base is arranged on the lower end of body, and described rotating base center is vertically fixed with screw mandrel, and screw mandrel is positioned at body inside; Described rotating disc center is fixed with nut, and the external screw thread of described screw mandrel and the internal thread of nut are supporting, and described nut sleeve is located on screw mandrel rotating disc is moved up and down in body.
Further improve as the utility model, described rotating base periphery is provided with some grooves.
Further improve as the utility model, also comprise rubbing head, described rubbing head is arranged at the below of rotating base, and described rubbing head is surrounded by a flannelette napped fabric layer outward.
Further improve as the utility model, the material of described body, rotating base, screw mandrel, rotating disc and nut is plastics.
3. beneficial effect
The technical scheme that adopts the utility model to provide, compared with prior art, has following beneficial effect:
(1) the anti-waste chalk sleeve of a kind of antiseized hand of the present utility model; by the rotating base of rotation body bottom; nut coordinates rotation with screw mandrel, the circular motion of rotating base is converted into the rectilinear motion of rotating disc, and chalk is contained in body; can be at any time with back-outing at any time; avoided directly contact chalk of finger, protection skin preserves from, and because chalk sleeve can lengthen chalk grip; so chalk uses very short time, is also unlikely to be thrown away waste.
(2) the anti-waste chalk sleeve of a kind of antiseized hand of the present utility model, body upper end is angle shape, the longer part of chalk once can being back-outed, the writing time of the chalk that both can keep back-outing is permanent, and angle shape can ensure again a not easy fracture of long section chalk of back-outing.
(3) the anti-waste chalk sleeve of a kind of antiseized hand of the present utility model, rotating base periphery is provided with when some grooves make to back-out chalk rotates the increase of rotating base frictional force, easy to use.
(4) the anti-waste chalk sleeve of a kind of antiseized hand of the present utility model, rotating base below is provided with rubbing head, rubbing head is surrounded by a flannelette napped fabric layer outward, can need to wipe for less word time, use, avoid specially finding the trouble of blackboard eraser or directly wipe the injury to skin with hand, and flannelette napped fabric layer can hold chalk dust.
(5) the anti-waste chalk sleeve of a kind of antiseized hand of the present utility model, reasonable in design, principle is simple, is convenient to promote the use of.
Brief description of the drawings
Fig. 1 is the anti-waste chalk sleeve schematic diagram of a kind of antiseized hand of the present utility model;
Fig. 2 is the anti-waste chalk sleeve internal structure schematic diagram of a kind of antiseized hand of the present utility model.
Label declaration in schematic diagram:
1, body; 2, rotating base; 21, screw mandrel; 3, rotating disc; 31, nut; 4, rubbing head; 5, chalk.
Detailed description of the invention
For further understanding content of the present utility model, by reference to the accompanying drawings and embodiment the utility model is described in detail.
Embodiment 1
As shown in Figure 1 and Figure 2, the anti-waste chalk sleeve of a kind of antiseized hand of the present embodiment, comprise body 1, rotating base 2, screw mandrel 21, rotating disc 3, nut 31 and rubbing head 4, described body 1 is hollow barrel-like structure, this body 1 upper end is angle shape, because chalk 5 consumes very fast, the shorter length of once back-outing, use more bothersome, due to the design of angle shape, make the longer part of chalk 5 once can being back-outed, the writing time of the chalk 5 that both can keep back-outing is permanent, and angle shape can ensure again the not easy fracture of chalk 5 of long section of back-outing.Described rotating base 2 peripheries are provided with some grooves, rotate rotating base 2 frictional force and increase while making to back-out chalk 4, easy to use; Described rotating base 2 is arranged on the lower end of body 1, and described rotating base 2 centers are vertically fixed with screw mandrel 21, and screw mandrel 21 is positioned at body 1 inside; Described rotating disc 3 centers are fixed with nut 31, the external screw thread of described screw mandrel 21 and the internal thread of nut 31 are supporting, described nut 31 is set on screw mandrel 21 rotating disc 3 is moved up and down in body 1, what deserves to be explained is, with the matching used chalk 5 of the present embodiment are bottom chalks with holes, hole size and screw mandrel 21 match; By the rotating base 2 of rotary chalk cap bottom; nut 31 coordinates rotation with screw mandrel 21; the circular motion of rotating base 2 is converted into the rectilinear motion of rotating disc 3; chalk 5 is contained in body; sliding up and down of rotating disc 3 drive moving up and down of chalk 5; chalk 5 can be at any time with back-outing at any time; avoid directly contact chalk 5 of finger; protection skin preserves from; and because chalk sleeve can lengthen chalk 5 grips; so chalk 5 uses very short time, is also unlikely to be thrown away waste.Described rubbing head 4 is arranged at the below of rotating base 2, the outer flannelette napped fabric layer that is surrounded by of described rubbing head 4, can need to wipe for less word time, use, avoid specially finding the trouble of blackboard eraser or directly wipe the injury to skin with hand, and flannelette napped fabric layer can hold chalk dust, use after a period of time, flannelette napped fabric layer needs to change.Specifically in the present embodiment, the material of described body 1, rotating base 2, screw mandrel 21, rotating disc 3 and nut 31 is plastics, and material is light, with low cost.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the utility model creation aim, without the creationary frame mode similar to this technical scheme and the embodiment of designing, all should belong to protection domain of the present utility model.
Claims (4)
1. the chalk sleeve that antiseized hand is anti-waste, comprise body (1), rotating base (2) and screw mandrel (21), it is characterized in that: also comprise rotating disc (3) and nut (31), described body (1) is hollow barrel-like structure, and this body (1) upper end is angle shape; Described rotating base (2) is arranged on the lower end of body (1), and described rotating base (2) center is vertically fixed with screw mandrel (21), and screw mandrel (21) is positioned at body (1) inside; Described rotating disc (3) center is fixed with nut (31), the external screw thread of described screw mandrel (21) and the internal thread of nut (31) are supporting, and described nut (31) is set on screw mandrel (21) rotating disc (3) is moved up and down in body (1).
2. the anti-waste chalk sleeve of a kind of antiseized hand according to claim 1, is characterized in that: described rotating base (2) periphery is provided with some grooves.
3. the anti-waste chalk sleeve of a kind of antiseized hand according to claim 2, it is characterized in that: also comprise rubbing head (4), described rubbing head (4) is arranged at the below of rotating base (2), the outer flannelette napped fabric layer that is surrounded by of described rubbing head (4).
4. according to the anti-waste chalk sleeve of a kind of antiseized hand described in claims 1 to 3 any one, it is characterized in that: the material of described body (1), rotating base (2), screw mandrel (21), rotating disc (3) and nut (31) is plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420531.1U CN203957618U (en) | 2014-07-28 | 2014-07-28 | The anti-waste chalk sleeve of a kind of antiseized hand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420531.1U CN203957618U (en) | 2014-07-28 | 2014-07-28 | The anti-waste chalk sleeve of a kind of antiseized hand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203957618U true CN203957618U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420420531.1U Expired - Fee Related CN203957618U (en) | 2014-07-28 | 2014-07-28 | The anti-waste chalk sleeve of a kind of antiseized hand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203957618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759385A (en) * | 2016-04-27 | 2016-07-13 | 东莞市联洲知识产权运营管理有限公司 | Heightening apparatus for communication cable support pole line |
-
2014
- 2014-07-28 CN CN201420420531.1U patent/CN203957618U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759385A (en) * | 2016-04-27 | 2016-07-13 | 东莞市联洲知识产权运营管理有限公司 | Heightening apparatus for communication cable support pole line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20150728 |
|
| EXPY | Termination of patent right or utility model |