CN2255361Y - Automatic holder for conic chalk - Google Patents
Automatic holder for conic chalk Download PDFInfo
- Publication number
- CN2255361Y CN2255361Y CN 96200313 CN96200313U CN2255361Y CN 2255361 Y CN2255361 Y CN 2255361Y CN 96200313 CN96200313 CN 96200313 CN 96200313 U CN96200313 U CN 96200313U CN 2255361 Y CN2255361 Y CN 2255361Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- utility
- model
- chalks
- conic
- 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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- Clamps And Clips (AREA)
Abstract
The utility model relates to an automatic clamping device for conic chalks. The utility model is suitable for teachers. A hand can be avoided from bonding with chalk dust, and chalks can be saved when chalk words are written by using the utility model. The maximum characteristic of the utility model is that the utility model is suitable for teachers of China because chalks made in China are all in conic shapes. The utility model can clamp chalks with changeable diameters. A conic hole of the end part of an inner hole of an outer chalk sleeve 2 is mainly used by the utility model to control the size of the diameter of a clamping mouth of an elastic clamping chalk body 1, and the size of the diameter of the clamping mouth is changed with the change of different cross section diameters of chalks so that chalks can be always clamped.
Description
The utility model relates to a kind of taper chalk automatic clamping device, is mainly used in teaching.
At present, the teacher directly holds chalk with hand and writes writing on the blackboard in teaching process, and the teacher can stick the chalk foam on hand after class, and some teacher is because long-term contact chalk makes hand decortication, phenomenons such as breach occur.
The utility model purpose is to make the teacher in teaching process, and hand does not directly contact chalk, keeps the cleaning of hand.In addition, also can avoid some teacher's hand because phenomenons such as decortication, breach appear in long-term contact chalk.
The purpose of this utility model provides the automatic binding clasp of a kind of taper chalk, and it can not only clamp the taper chalk, and can regulate the chalk exposed length easily again.And making people in use, hand does not contact chalk.
It is to clamp the taper chalk that the utility model compared with prior art has advantage.Because the chalk that domestic chalk manufacturer produces all is taper, diameter at butt end and top diameter differ the 5-4 millimeter.And external some similar products can only use on the chalk with tapering not.In addition, the utility model is provided with spring controlled automatic clamping device, can regulate the length of chalk exposed portions serve at any time, and can clamp automatically.
Concrete structure the following drawings of the present utility model provides:
Fig. 1 is the automatic binding clasp structural representation of taper chalk.
This device overcoat (2) endoporus one end has designed taper hole, cooperate with elasticity pen clip body (1) the end elasticity dop (having three grooves) in being contained in endoporus, automatically regulate the dop diameter of elasticity pen clip body (1) by spring (3) effect, clamp taper chalk purpose thereby reach.
During use, hold an overcoat (2), down press elasticity pen clip body (1) with thumb with four fingers.At this moment, elasticity pen clip body (1) moves downward, and elasticity dop diameter increases thereupon, chalk can be put into elasticity handwriting (1) hole.Unclamp thumb, by spring (3) effect, chalk is clamped automatically.In the use, if after chalk is used weak point, press elasticity pen clip body (1) with thumb again, chalk can regulate required length automatically from Kong Zhonglu under the gravity effect, unclamp the thumb chalk and clamped automatically again.
Automatic chalk device of the present invention has designed taper hole at endoporus one end of an overcoat 2, its controls the size of elasticity dop (having three grooves) diameter of elasticity pen clip body 1 end.Thereby can clamp the diameter of the different cross section of taper chalk automatically.
Claims (2)
1, the automatic binding clasp of a kind of taper chalk, outside in the pen cap (2), spring (3) and elasticity handwriting (1) are installed, it is characterized in that: spring (3) is put into the outer pen cap (2) endoporus end face step and is fixed, elasticity handwriting (1) is placed in spring (3) endoporus end face step and fixes, and elasticity handwriting (1) is placed in spring (3) endoporus end face step and fixes.
2, the automatic binding clasp of taper chalk according to claim 1, it is characterized in that: the interior bore ends of the outer pen cap (2) is a bellmouth, be contained in uniform three pods in elasticity pen clip body (1) dop end in this hole, control the dop diameter and clamp the taper chalk by spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96200313 CN2255361Y (en) | 1996-01-08 | 1996-01-08 | Automatic holder for conic chalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96200313 CN2255361Y (en) | 1996-01-08 | 1996-01-08 | Automatic holder for conic chalk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2255361Y true CN2255361Y (en) | 1997-06-04 |
Family
ID=33886919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96200313 Expired - Fee Related CN2255361Y (en) | 1996-01-08 | 1996-01-08 | Automatic holder for conic chalk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2255361Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950319A (en) * | 2014-04-08 | 2014-07-30 | 华南理工大学 | Chalk holder |
-
1996
- 1996-01-08 CN CN 96200313 patent/CN2255361Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950319A (en) * | 2014-04-08 | 2014-07-30 | 华南理工大学 | Chalk holder |
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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 |