CN202517902U - Chalk section device - Google Patents
Chalk section device Download PDFInfo
- Publication number
- CN202517902U CN202517902U CN2012201483763U CN201220148376U CN202517902U CN 202517902 U CN202517902 U CN 202517902U CN 2012201483763 U CN2012201483763 U CN 2012201483763U CN 201220148376 U CN201220148376 U CN 201220148376U CN 202517902 U CN202517902 U CN 202517902U
- Authority
- CN
- China
- Prior art keywords
- chalk
- outer tube
- interior
- opening
- gradient
- 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
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 208000002193 Pain Diseases 0.000 abstract description 4
- 230000036407 pain Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005728 strengthening Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a chalk section device. The chalk section device is composed of an inner tube (1) and an outer tube (2), wherein the inner tube (1) is connected with an outer tube (2) through a thread (3); the chalk section device is characterized in that the front end of the inner tube (1) is provided with an opening (4), and the rear end of the opening (4) is provided with an outer inclination (5); and the front end of the outer tube (2) is provided with an inner inclination (6), and the outer side of the outer tube (2) is provided with a strengthening ring (7). The chalk section device is compared with a hand which currently directly holds a chalk head to write, the section chalk device is convenient to use, reduces waste, improves the chalk utilization rate and avoids finger pains of teachers compared with the current mode of directly using a chalk section to write.
Description
Technical field
The utility model relates to a kind of chalk fixture head, specifically a kind of joint chalk device.
Background technology
Now, units such as school, office the teaching and training process in, the chalk that the teacher uses on blackboard; Be a teacher to arrest with hand and write at need, just throw away it, the teacher who has throws away and feels unfortunate; Just pinching the chalk head with finger continues to use; Above-mentioned processing method, the problem of existence: the one, throw away, cause waste; The 2nd, continue to use, very inconvenient, the time has been grown, finger pain.
Summary of the invention
It is a kind of simple in structure, easy to use that the purpose of the utility model is to provide, and cuts the waste, and improves the chalk utilization rate, avoids the teacher to point the joint chalk device of pain.
For reaching above purpose; The technical scheme that the utility model is taked is: this joint chalk device is made up of interior pipe and outer effective being threaded interior pipe, outer tube; It is characterized in that establishing opening at the front end of interior pipe; Gradient outside establish the rear end of opening is established interior gradient at the front end of outer tube, establishes reinforcing ring outside.The utility model is also implemented through following measure: the interior diameter of pipe is consistent with the overall diameter of chalk in said, and the interior gradient of outer tube front end, its angle are complementary with the outer gradient of interior tube opening rear end between 10-15 °.When using the utility model, left-handed outer tube, the interior diameter of pipe is identical with the chalk overall diameter of clamping in making, with the chalk interior pipe of packing into, dextrorotation outer tube then, the outer tube reach makes in the inboard gradient compression and manages, and tight the chalk head-clamp, hand-held outer tube writes.
Use the beneficial effect of the utility model to be: compare with directly writing with hand-held chalk head at present, have easy to usely, cut the waste, raising chalk utilization rate avoids the teacher to point the advantage of pain.
Description of drawings
Fig. 1 looks sketch map for the utility model structure master.
Fig. 2 be the utility model along A-A to cross-sectional schematic.
The specific embodiment
Make the utility model with reference to accompanying drawing 1,2.This joint chalk device is made up of interior pipe 1, outer tube 2, and interior pipe 1 is connected with outer tube 2 usefulness screw threads 3, it is characterized in that establishing opening 4 at the front end of interior pipe 1, and gradient 5 outside establish the rear end of opening 4, and gradient 6 in the front end of outer tube 2 is established, and establish reinforcing ring 7 outside.Pipe 1 interior diameter is consistent with the overall diameter of chalk in said, and the interior gradient 6 of outer tube 2 front ends, its angle are complementary with the outer gradient 5 of interior pipe 1 opening 4 rear ends between 10-15 °.
Claims (2)
1. a joint chalk device is made up of interior pipe (1), outer tube (2), and interior pipe (1) is connected with screw thread (3) with outer tube (2); It is characterized in that establishing opening (4) at the front end of interior pipe (1); Gradient (5) outside establish the rear end of opening (4) is established interior gradient (6) at the front end of outer tube (2), establishes reinforcing ring (7) outside.
2. joint chalk device according to claim 1; The interior diameter that it is characterized in that said interior pipe (1) is consistent with the overall diameter of chalk; The interior gradient (6) of outer tube (2) front end, its angle are complementary with the outer gradient (5) of interior pipe (1) opening (4) rear end between 10-15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201483763U CN202517902U (en) | 2012-03-28 | 2012-03-28 | Chalk section device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201483763U CN202517902U (en) | 2012-03-28 | 2012-03-28 | Chalk section device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202517902U true CN202517902U (en) | 2012-11-07 |
Family
ID=47100864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201483763U Expired - Fee Related CN202517902U (en) | 2012-03-28 | 2012-03-28 | Chalk section device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202517902U (en) |
-
2012
- 2012-03-28 CN CN2012201483763U patent/CN202517902U/en not_active Expired - Fee Related
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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: 20121107 Termination date: 20130328 |