CN203472335U - Chalk cover - Google Patents
Chalk cover Download PDFInfo
- Publication number
- CN203472335U CN203472335U CN201320356632.2U CN201320356632U CN203472335U CN 203472335 U CN203472335 U CN 203472335U CN 201320356632 U CN201320356632 U CN 201320356632U CN 203472335 U CN203472335 U CN 203472335U
- Authority
- CN
- China
- Prior art keywords
- chalk
- main body
- tail
- sleeve
- chalk sleeve
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a chalk cover, comprising a chalk cover main body and a chalk length adjusting device; the chalk cover main body is provided with the chalk length adjusting device; the chalk length adjusting device comprises a chalk tail support block for placing and supporting the tail end of a piece of chalk, and a poking head for adjusting the height position of the chalk tail support block on the chalk cover main body; the chalk tail support block is arranged in a cover of the chalk cover; the poking head is connected with the chalk tail support block and is arranged outside the chalk cover; the chalk cover main body is provided with a height adjusting slot; the length, exposed out of the chalk cover main body, of the chalk placed on the chalk tail support block is obtained by poking the poking head to adjust different height positions of the chalk tail support block on the height adjusting slot. The chalk utilization rate is improved, the length, exposed out of the chalk cover, of the chalk is gradually adjusted in the use process, the chalk is protected, and the maximum utilization rate is realized; meanwhile, poor influence to the body health of a teacher or students caused by fly dust of the chalk is reduced.
Description
Technical field
The utility model relates to a kind of chalk, especially relates to a kind of for placing the auxiliary implement of chalk.
Background technology
Conventionally the major way of classroom instruction is to use chalk-writing on blackboard, to reach the object of passing on education informations; Although chalk is economical and practical educational aid, yet the use of chalk but will inevitably cause producing a large amount of dusts and chalk end phenomenon, the waste of one chalk end is more severe, moreover these dusts not only to endanger teacher and student's eyes and respiratory tract etc. healthy, bring the adverse effect of body illness, the article such as books and clothing of simultaneously also can making dirty, also indirectly produce adverse effect to a certain extent to Classroom Teaching and efficiency.
Utility model content
It is more severe that the chalk that the utility model is the existing teaching use of solution exists chalk end waste in teaching use procedure, chalk dust harm teacher and student's eyes and respiratory tract etc. are healthy, a kind of utilization rate that improves chalk end of bringing the present situations such as adverse effect of body illness and providing, also can play to a certain extent and reduce chalk dust to healthy chalk sleeves that causes adverse effect such as teacher and student's eyes and respiratory tracts.
The utility model is to solve the problems of the technologies described above adopted concrete technical scheme to be: a kind of chalk sleeve, it is characterized in that: comprise chalk sleeve body main body and chalk length adjusting device, chalk sleeve body main body is provided with chalk length adjusting device, chalk length adjusting device comprises for placing and support the chalk tail tray of chalk tail end, for adjusting the shifting block of chalk tail tray height and position in chalk sleeve body main body, chalk tail tray is located in the cover of chalk sleeve, shifting block is connected with chalk tail tray and is located at outside the cover of chalk sleeve, chalk sleeve body main body is provided with Height Adjustment groove, stirring shifting block adjusts the differing heights position of chalk tail tray on Height Adjustment groove and obtains being placed on the exposed length that chalk on chalk tail tray exposes chalk sleeve cover body main body.Improved fully the utilization rate to the chalk end used of imparting knowledge to students, made chalk obtain the use utilization rate of maximum length; Can be in use adjustment chalk progressively expose the length outside chalk sleeve; reach protection chalk and improve to the full extent chalk length and use utilization rate; simultaneously chalk sleeve can also reach and reduce chalk dust and fly upward and cause the identity ill-health impact property that teacher or student are caused, and builds a more healthy teaching environment.
As preferably, described Height Adjustment groove adopts one to prolong longitudinal height chute that chalk sleeve length direction arranges, longitudinally on height chute, be connected with the horizontal altitude location draw-in groove of multistage, the linking arm being connected between shifting block and chalk tail tray can longitudinally highly be free to slide between chute and altitude location draw-in groove.Longitudinally height chute and altitude location draw-in groove are effectively realized the height and position adjustment in chalk sleeve to chalk, improve the maximum of chalk length is used to utilization rate.
As preferably, on described longitudinal height chute, be connected with 4～10 sections of horizontal altitude location draw-in grooves.According to actual needs, improve and use the height of lift of utilization rate to adjust effect to chalk length.
As preferably, described chalk tail tray is provided with dust and takes in frame and protect edge.The take in effect of raising to chalk dust, reduces the adverse health impact on teacher and student.
As preferably, the distance setting between described Multi-section height locating groove is adopted as: near 2～3 sections of altitude location draw-in grooves of chalk outlet end spacing distance each other, be less than the spacing distance between all the other several sections of altitude location draw-in grooves 13.Raising chalk is to a greater extent used the chalk end in latter stage to use utilization rate.
As preferably, described chalk sleeve body main body is tubular.Improve comfort.
As preferably, described chalk sleeve body main body tail end is provided with involution tail-hood.Raising is taken in and unifies to collect and pour out operation convenience chalk dust.
The beneficial effects of the utility model are: improved fully the utilization rate to the chalk end used of imparting knowledge to students, made chalk obtain the use utilization rate of maximum length; Can be in use adjustment chalk progressively expose the length outside chalk sleeve; reach protection chalk and improve to the full extent chalk length and use utilization rate; simultaneously chalk sleeve can also reach and reduce chalk dust and fly upward and cause the identity ill-health impact property that teacher or student are caused, and builds a more healthy teaching environment.
accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the preferred embodiment of the utility model chalk sleeve.
Fig. 2 is the structural representation of another direction of observation of the utility model chalk sleeve.
The specific embodiment
Fig. 1, in embodiment shown in Fig. 2, a kind of chalk sleeve, comprise chalk sleeve body main body 10 and chalk length adjusting device, in chalk sleeve body main body 10, chalk length adjusting device is installed, chalk length adjusting device comprises installs for placing and support the chalk tail tray 20 of chalk tail end, for adjusting the shifting block 21 of chalk tail tray 20 height and position in chalk sleeve body main body 10, chalk tail tray 20 is arranged in the cover of chalk sleeve, shifting block 21 is connected with chalk tail tray 20 and is arranged on outside the body of chalk sleeve, in chalk sleeve body main body 10, have Height Adjustment groove 11, stirring shifting block 21 adjusts the differing heights positions of chalk tail tray 20 on Height Adjustment groove 11 and obtains being placed on the exposed length that chalk 30 on chalk tail tray 20 exposes chalk sleeve cover body main body.Height Adjustment groove 11 adopts one to prolong longitudinal height chute 12 that chalk sleeve length direction arranges, longitudinally on height chute 12, be connected with the horizontal altitude location draw-in groove 13 of multistage, the linking arm being connected between shifting block 21 and chalk tail tray 20 can longitudinally highly be free to slide between chute 12 and altitude location draw-in groove 13.On height chute 12, being connected with 6 sections of horizontal altitude location draw-in grooves 13, can also be also to adopt to be longitudinally connected with 4～10 sections of horizontal altitude location draw-in grooves 13 on height chute 12 certainly.On chalk tail tray 20, being connected with dust takes in frame and protects edge.Distance setting between Multi-section height locating groove 13 is adopted as: 2～3 sections of altitude location draw-in grooves 13 of close chalk outlet end spacing distance is each other less than the spacing distance between all the other several sections of altitude location draw-in grooves 13.Chalk sleeve body main body 10 is tubular.Chalk sleeve body main body 10 tail ends are provided with involution tail-hood.
During use, chalk is put in chalk sleeve, chalk tail end is placed on chalk tail tray 20, obtain the support of chalk to place, when chalk uses after certain degree of wear, the length of exposing the chalk end of chalk sleeve shortens not to be utilized while again writing, rotatable shifting block 21, shifting block 21 drives chalk 30 on chalk tail trays 20 upwards in longitudinal height chute after upward sliding, prolong again the corresponding altitude location draw-in groove 13(that laterally drags on and see Fig. 2), the height that chalk is exposed outside chalk sleeve is readjusted the length that is applicable to writing, and carries out writing and teaching again; Chalk end so is to the last fully utilized.The chalk dust being simultaneously collected in chalk sleeve can also be put upside down by opening chalk sleeve involution tail-hood, more safe and sanitary.
Although more used the terms such as chalk sleeve body main body, chalk length adjusting device, chalk tail tray, shifting block, Height Adjustment groove, longitudinal height chute, altitude location draw-in groove herein; But do not get rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (7)
1. a chalk sleeve, it is characterized in that: comprise chalk sleeve body main body (10) and chalk length adjusting device, chalk sleeve body main body (10) is provided with chalk length adjusting device, chalk length adjusting device comprises for placing and support the chalk tail tray (20) of chalk tail end, be used for adjusting chalk tail tray (20) at the shifting block (21) of the upper height and position of chalk sleeve body main body (10), chalk tail tray (20) is located in the cover of chalk sleeve, shifting block (21) is connected with chalk tail tray (20) and is located at outside the cover of chalk sleeve, chalk sleeve body main body (10) is provided with Height Adjustment groove (11), stirring shifting block adjusts the differing heights position of chalk tail tray (20) on Height Adjustment groove and obtains being placed on the exposed length that chalk (30) on chalk tail tray (20) exposes chalk sleeve cover body main body.
2. according to chalk sleeve claimed in claim 1, it is characterized in that: described Height Adjustment groove (11) adopts one to prolong longitudinal height chute (12) that chalk sleeve length direction arranges, longitudinally on height chute (12), be connected with the horizontal altitude location draw-in groove (13) of multistage, the linking arm being connected between shifting block (21) and chalk tail tray (20) can longitudinally highly be free to slide between chute (12) and altitude location draw-in groove (13).
3. according to chalk sleeve claimed in claim 2, it is characterized in that: on described longitudinal height chute (12), be connected with 4～10 sections of horizontal altitude location draw-in grooves (13).
4. according to the chalk sleeve described in claim 1 or 2, it is characterized in that: described chalk tail tray (20) is provided with dust and takes in frame and protect edge.
5. according to chalk sleeve claimed in claim 2, it is characterized in that: the distance setting between described Multi-section height locating groove (13) is adopted as: 2～3 sections of altitude location draw-in grooves (13) of close chalk outlet end spacing distance is each other less than the spacing distance between all the other several sections of altitude location draw-in grooves (13).
6. according to chalk sleeve claimed in claim 1, it is characterized in that: described chalk sleeve body main body (10) is tubular.
7. according to the chalk sleeve described in claim 1 or 6, it is characterized in that: described chalk sleeve body main body (10) tail end is provided with involution tail-hood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320356632.2U CN203472335U (en) | 2013-06-21 | 2013-06-21 | Chalk cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320356632.2U CN203472335U (en) | 2013-06-21 | 2013-06-21 | Chalk cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203472335U true CN203472335U (en) | 2014-03-12 |
Family
ID=50220733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320356632.2U Expired - Fee Related CN203472335U (en) | 2013-06-21 | 2013-06-21 | Chalk cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203472335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107521257A (en) * | 2017-07-19 | 2017-12-29 | 安徽卓特信息技术有限公司 | A kind of multi-function chalk casing |
| CN108001076A (en) * | 2017-11-22 | 2018-05-08 | 浙江海洋大学 | A kind of chalk sleeve with laser pen |
-
2013
- 2013-06-21 CN CN201320356632.2U patent/CN203472335U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107521257A (en) * | 2017-07-19 | 2017-12-29 | 安徽卓特信息技术有限公司 | A kind of multi-function chalk casing |
| CN108001076A (en) * | 2017-11-22 | 2018-05-08 | 浙江海洋大学 | A kind of chalk sleeve with laser pen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150621 |
|
| EXPY | Termination of patent right or utility model |