CN203032158U - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN203032158U CN203032158U CN 201220645200 CN201220645200U CN203032158U CN 203032158 U CN203032158 U CN 203032158U CN 201220645200 CN201220645200 CN 201220645200 CN 201220645200 U CN201220645200 U CN 201220645200U CN 203032158 U CN203032158 U CN 203032158U
- Authority
- CN
- China
- Prior art keywords
- chalk
- connecting block
- contiguous block
- shell
- outer shell
- 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
Links
- 239000002699 waste material Substances 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a chalk sleeve and belongs to the field of office supplies. The chalk sleeve comprises an outer shell, wherein a support rod is arranged inside the outer shell, a top connecting block and a bottom connecting block are respectively arranged on the support rod, outer threads are arranged on the top connecting block and the bottom connecting block, inner threads are arranged on the inner wall of the outer shell, a clamping mouth is formed in the top connecting block, and an operating block is connected with the bottom of the support rod. The chalk sleeve has the advantages of being simple in structure and convenient to use; through operation of the operating block, the top connecting block and the bottom connecting block are enabled to do rotational motion inside the outer shell at the same time, a chalk can be driven to move upwards, and the chalk can be clamped by the clamping mouth, so that the chalk which is very short can also be used for writing on a blackboard, waste is avoided, and meanwhile, the arranged outer shell can also protect fingers of a user from being hurt due to direct contact of the fingers and the chalk.
Description
Technical field
The utility model relates to a kind of chalk sleeve, belongs to the office appliance field.
Background technology
When using chalk, can write and abandon because of the too short inconvenience of chalk usually; so not only cause the wasting of resources; and pollute for the academic environment of students; and; usually teacher also often directly contacts chalk, again because the main component of chalk is calcium carbonate and calcium sulfate when using chalk to write; or containing a spot of calcium oxide, contact damages for teacher's finger for a long time.
The utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of simple in structure, easy to use, can protect the user to point, and can save the chalk sleeve of chalk.
The utility model is that the technical scheme that its technical problem of solution adopts is: described chalk sleeve, comprise shell, it is characterized in that: support bar is set in the shell, top contiguous block and bottom contiguous block are set respectively on the support bar, on top contiguous block and the bottom contiguous block external screw thread is set all, outer casing inner wall arranges internal thread, and the folder mouth is set on the contiguous block of top, support bar bottom attended operation piece.
Support bar is used for support, top contiguous block and bottom contiguous block; Folder mouth on the contiguous block of top is used for clamping chalk; Top contiguous block and bottom contiguous block are all installed by the screw-internal thread fit on external screw thread and the shell, chalk rotation from bottom to top from shell can be used, and can use when chalk is very short in the same old way; Shell can avoid user's hand directly to contact chalk, can protect user's hand.
The front end of the outer wall of described shell arranges the groove Handheld Division of arc.The groove Handheld Division that arranges, can make easy to use, make write more smooth.
The beneficial effects of the utility model are:
Simple in structure, easy to use; By the operating operation piece; top contiguous block and bottom contiguous block are rotatablely moved simultaneously in the enclosure; can drive chalk moves upward; the folder mouth can be clamped chalk; when chalk is very short, also can write at blackboard; avoided waste, simultaneously, the shell of setting can protect user's finger can not come to harm because directly contacting chalk.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Among the figure: 1, chalk 2, shell 3, top contiguous block 4, support bar 5, bottom contiguous block 6, operating block 7, groove Handheld Division.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1, chalk sleeve described in the utility model, comprise shell 2, support bar 4 is set in the shell 2, top contiguous block 3 and bottom contiguous block 5 are set respectively on the support bar 4, on top contiguous block 3 and the bottom contiguous block 5 external screw thread is set all, shell 2 inwalls arrange internal thread, the folder mouth is set on the top contiguous block 3, support bar 4 bottom attended operation pieces 6, the front end of the outer wall of shell 2 arranges the groove Handheld Division 7 of arc.
During use, finger is placed on groove Handheld Division 7 writes, when the chalk 1 that exposes shell 2 shortens, can turn operating block 6, top contiguous block 3 and bottom contiguous block 5 are rotated up, drive chalk 1 and move upward, make chalk 1 expose shell 2 backs and continue to use.
Claims (2)
1. chalk sleeve, comprise shell (2), it is characterized in that: support bar (4) is set in the shell (2), top contiguous block (3) and bottom contiguous block (5) are set respectively on the support bar (4), on top contiguous block (3) and the bottom contiguous block (5) external screw thread is set all, shell (2) inwall arranges internal thread, and the folder mouth is set on the top contiguous block (3), support bar (4) bottom attended operation piece (6).
2. chalk sleeve according to claim 1, it is characterized in that: the front end of the outer wall of shell (2) arranges the groove Handheld Division (7) of arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645200 CN203032158U (en) | 2012-11-29 | 2012-11-29 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645200 CN203032158U (en) | 2012-11-29 | 2012-11-29 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203032158U true CN203032158U (en) | 2013-07-03 |
Family
ID=48684299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220645200 Expired - Fee Related CN203032158U (en) | 2012-11-29 | 2012-11-29 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203032158U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773009A (en) * | 2015-05-12 | 2015-07-15 | 罗福仲 | Novel chalk cover |
| CN110001241A (en) * | 2019-04-23 | 2019-07-12 | 长沙宁湖机械设备有限公司 | A kind of multi-function chalk casing |
-
2012
- 2012-11-29 CN CN 201220645200 patent/CN203032158U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773009A (en) * | 2015-05-12 | 2015-07-15 | 罗福仲 | Novel chalk cover |
| CN110001241A (en) * | 2019-04-23 | 2019-07-12 | 长沙宁湖机械设备有限公司 | A kind of multi-function chalk casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131129 |