CN2880516Y - Adjustable hand protecting chalk holder - Google Patents
Adjustable hand protecting chalk holder Download PDFInfo
- Publication number
- CN2880516Y CN2880516Y CN 200520125767 CN200520125767U CN2880516Y CN 2880516 Y CN2880516 Y CN 2880516Y CN 200520125767 CN200520125767 CN 200520125767 CN 200520125767 U CN200520125767 U CN 200520125767U CN 2880516 Y CN2880516 Y CN 2880516Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- button
- sleeve
- inner sleeve
- spring
- 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
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to an adjustable hand-protection chalk sleeve, which belongs to the field of teaching appliance. The chalk sleeve mainly includes an outer sleeve, an inner sleeve, a clamping spring, a button and a jacking spring. The inner sleeve is passed through the outer sleeve, a cylinder at the handle of the inner sleeve extends out from the hole on the outer sleeve, a spring is sleeved on the extending part and a button is fixed on this part. Press the button to place a chalk in at the front end, leave a certain length of chalk at outside, release the button, and then the chalk is clamped for writing.
Description
Technical field
The utility model relates to a kind of adjustable handguard chalk sleeve, belongs to the teaching aid field.
Background technology
The teacher is when writing on the blackboard, and hand-held chalk is write on blackboard, and not only chalk dust sticks hand easily, and when writing bad firmly, reasonable in designly, simple in structure, easy to use when firmly big slightly fracture easily.
Summary of the invention:
The utility model provides a kind of adjustable handguard chalk sleeve at the deficiencies in the prior art, has advantage reasonable in design, simple in structure, easy to use.
The purpose of this utility model is achieved through the following technical solutions: a kind of adjustable handguard chalk sleeve, mainly form by outer tube, inner sleeve, fastening spring, button and ejector spring, wherein, inner sleeve is through in the outer tube, the shank of inner sleeve has the hole of a Cylinder from outer tube and passes, and passes part and is with spring and is fixed with button.
Use the utility model can protect chalk not easily broken, have advantages such as reasonable in design, simple in structure, easy to use, sanitation and hygiene.
Description of drawings:
Accompanying drawing is the utility model structural representation.
Wherein: 1, outer tube, 2, inner sleeve, 3, fastening spring, 4, button, 5, ejector spring.
The specific embodiment:
Embodiment: structure as shown in drawings.Form by outer tube 1, inner sleeve 2, fastening spring 3, button 4, ejector spring 5.Wherein, it is the otch of the quartering that there is a rip cutting at inner sleeve 2 collar extension positions, under the force action of fastening spring 3 and outer tube 1 port, is cut open part and inwardly tightens up, and the promptly effect of chalk is arranged.Inner sleeve 2 is through in the outer tube 1, the shank of inner sleeve has the hole of a Cylinder from outer tube 1 and passes, and there is a screw at the shank center that passes, and button 4 is fixed in the inner sleeve shank by this hole, be with fastening spring 3 in the gap of this shank and button, when pressing the button 4, the compression fastening spring promotes inner sleeve simultaneously and outwards moves, the inner sleeve upper cut partly unclamps, chalk is an extended part under the effect of ejector spring 5, and when release button, chalk is firmly grasped again.During use, press the button, put into chalk, reserve suitable length from front end, release button, chalk is clamped, writes.
Claims (1)
1, a kind of adjustable handguard chalk sleeve, mainly be made up of outer tube, inner sleeve, fastening spring, button and ejector spring, wherein, inner sleeve is through in the outer tube, the shank of inner sleeve has the hole of a Cylinder from outer tube and passes, and passes part and is with spring and is fixed with button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125767 CN2880516Y (en) | 2005-12-16 | 2005-12-16 | Adjustable hand protecting chalk holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125767 CN2880516Y (en) | 2005-12-16 | 2005-12-16 | Adjustable hand protecting chalk holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2880516Y true CN2880516Y (en) | 2007-03-21 |
Family
ID=37880355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520125767 Expired - Fee Related CN2880516Y (en) | 2005-12-16 | 2005-12-16 | Adjustable hand protecting chalk holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2880516Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950319A (en) * | 2014-04-08 | 2014-07-30 | 华南理工大学 | Chalk holder |
| CN104786695A (en) * | 2015-05-08 | 2015-07-22 | 攀枝花学院 | Pen container capable of lengthening short pencil |
-
2005
- 2005-12-16 CN CN 200520125767 patent/CN2880516Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950319A (en) * | 2014-04-08 | 2014-07-30 | 华南理工大学 | Chalk holder |
| CN104786695A (en) * | 2015-05-08 | 2015-07-22 | 攀枝花学院 | Pen container capable of lengthening short pencil |
| CN104786695B (en) * | 2015-05-08 | 2017-08-25 | 攀枝花学院 | Short pencil lengthens pen container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |