CN202106729U - Clamping and fixing sleeve for chalk writing - Google Patents
Clamping and fixing sleeve for chalk writing Download PDFInfo
- Publication number
- CN202106729U CN202106729U CN2011202072398U CN201120207239U CN202106729U CN 202106729 U CN202106729 U CN 202106729U CN 2011202072398 U CN2011202072398 U CN 2011202072398U CN 201120207239 U CN201120207239 U CN 201120207239U CN 202106729 U CN202106729 U CN 202106729U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- screw rod
- wall
- chalk
- extrusion plate
- 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
A clamping and fixing sleeve for chalk writing relates to the technical field of a teaching aid. The clamping and fixing sleeve consists of a sleeve, an extrusion plate, supporting rods, supporting springs and a screw rod and is characterized in that the arc-shaped extrusion plate which is adaptive to an inner cavity of the sleeve is arranged inside the sleeve; the supporting rods which are vertically fixed on outer walls of arch-shaped tops at both ends of the extrusion plate respectively pass through corresponding through holes on the sleeve wall of the sleeve and then are connected with limiting bulges; the supporting springs are sheathed on the supporting rods between the limiting bulges and the outer wall of the sleeve; the screw rod is connected in a screwed hole on the sleeve wall of the middle part of the sleeve by an internal thread, wherein a hand wheel is arranged at the outer end of the screw rod; and the lower end of the screw rod is propped against the outer wall of the middle arc-shaped top of the extrusion plate. The clamping and fixing sleeve is simple in structure and is convenient to use; after a chalk is inserted into the sleeve and is clamped and fixed by using the extrusion plate, a person can hold the sleeve by a hand for writing, thereby avoiding the direct contact between the hand and the chalk, keeping the hand clean and sanity and reducing pollution.
Description
Technical field
The utility model relates to teaching appurtenance technical field, and specifically a kind of chalk is write with gripping cover.
Background technology
Chalk is the staple that school teacher writes on blackboard, when writing, points directly to contact with chalk, often expires the powder that hand is a white after class for one, and the adversary pollutes, healthy unfavorable to the people.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, provides a kind of user's hand directly not contact with chalk, can avoid pointing the chalk that is polluted and write with gripping cover.
The purpose of the utility model is achieved in that this chalk is write with gripping cover and is made up of sleeve, stripper plate, support bar, support spring, screw rod; Sleeve inner is provided with the arc stripper plate that adapts with barrel bore; The support bar of vertical fixing passes respectively above the sleeve wall and links to each other with spacing preiection behind the corresponding through hole on the outer wall of arc top, stripper plate two ends, is with support spring on the support bar between spacing preiection and the sleeve outer wall; Screwed hole internal thread above the barrel of sleeve middle part is connecting the screw rod that the outer end is provided with handwheel, and the screw rod lower end withstands on the outer wall of arc top, stripper plate middle part.
The advantage of the utility model: simple in structure, easy to use, with chalk insert sleeve and grip with stripper plate after just hand-holdable sleeve write, can avoid hand directly to contact with chalk, keep the sanitation and hygiene of hand, reduce and pollute.
Description of drawings
Accompanying drawing is the structure cutaway view of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail: this chalk is write with gripping cover and is made up of sleeve 1, stripper plate 2, support bar 3, support spring 4, screw rod 5; Sleeve 1 inside is provided with the arc stripper plate 2 that adapts with sleeve 1 inner chamber; The support bar 3 of vertical fixing passes respectively above sleeve 1 barrel and links to each other with spacing preiection 6 behind the corresponding through hole on the outer wall of arc top, stripper plate 2 two ends, is with support spring 4 on the support bar 3 between spacing preiection 6 and sleeve 1 outer wall; Screwed hole internal thread above the sleeve 1 middle part barrel is connecting the screw rod 5 that the outer end is provided with handwheel 7, and screw rod 5 lower ends withstand on the outer wall of arc top, stripper plate 2 middle part.
Claims (1)
1. a chalk is write with gripping cover; Form by sleeve (1), stripper plate (2), support bar (3), support spring (4), screw rod (5); It is characterized in that sleeve (1) inside is provided with the arc stripper plate (2) that adapts with sleeve (1) inner chamber; The support bar (3) of vertical fixing passes sleeve (1) respectively and links to each other with spacing preiection (6) behind the corresponding through hole above the barrel on the outer wall of arc top, stripper plate (2) two ends, is with support spring (4) on the support bar (3) between spacing preiection (6) and sleeve (1) outer wall; Screwed hole internal thread above the barrel of sleeve (1) middle part is connecting the screw rod (5) that the outer end is provided with handwheel (7), and screw rod (5) lower end withstands on the outer wall of arc top, stripper plate (2) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202072398U CN202106729U (en) | 2011-06-06 | 2011-06-06 | Clamping and fixing sleeve for chalk writing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202072398U CN202106729U (en) | 2011-06-06 | 2011-06-06 | Clamping and fixing sleeve for chalk writing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202106729U true CN202106729U (en) | 2012-01-11 |
Family
ID=45432176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202072398U Expired - Fee Related CN202106729U (en) | 2011-06-06 | 2011-06-06 | Clamping and fixing sleeve for chalk writing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202106729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108284682A (en) * | 2018-03-16 | 2018-07-17 | 上海市格致中学 | Pencil stretcher |
| CN110053417A (en) * | 2019-05-24 | 2019-07-26 | 安徽工程大学 | A kind of paintbrush fixator |
-
2011
- 2011-06-06 CN CN2011202072398U patent/CN202106729U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108284682A (en) * | 2018-03-16 | 2018-07-17 | 上海市格致中学 | Pencil stretcher |
| CN110053417A (en) * | 2019-05-24 | 2019-07-26 | 安徽工程大学 | A kind of paintbrush fixator |
| CN110053417B (en) * | 2019-05-24 | 2020-11-13 | 安徽工程大学 | Painting brush fixer |
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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: 20120111 Termination date: 20120606 |