CN202986464U - Novel chalk sleeve - Google Patents
Novel chalk sleeve Download PDFInfo
- Publication number
- CN202986464U CN202986464U CN 201220725116 CN201220725116U CN202986464U CN 202986464 U CN202986464 U CN 202986464U CN 201220725116 CN201220725116 CN 201220725116 CN 201220725116 U CN201220725116 U CN 201220725116U CN 202986464 U CN202986464 U CN 202986464U
- Authority
- CN
- China
- Prior art keywords
- cutting ferrule
- chalk
- guide rod
- sheath body
- elongated slot
- 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
- 239000000428 dust Substances 0.000 abstract description 4
- 210000003660 reticulum Anatomy 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a novel chalk sleeve. The chalk sleeve comprises a clamping sleeve, wherein chalks can be inserted in the clamping sleeve, an opening end of the clamping sleeve is connected to a dialing disk through a connecting rod, the rear end of the clamping sleeve is connected to an inner guide rod, raised points are arranged on the side wall of the clamping sleeve, the clamping sleeve is arranged in a case, an outer guide rod which is connected to the rear cover of the case is arranged in the case, the inner guide rod is arranged in the outer guide rod, a spring is arranged between the clamping sleeve and the rear cover, the spring is sleeved on the outer guide rod and connected to the rear cover, a long slot is arranged on the side wall of the case axially, staggered pawls are arranged on two long edges of the long slot, an opening is arranged at the front end of the long slot, the dialing disk is clamped in the opening of the case, and part of raised points of the clamping sleeve is embedded in the long slot. By the aid of the chalk sleeve, teachers and students can write on the blackboard conveniently, chalk dust cannot stain fingers and chalks are saved.
Description
Technical field
The utility model relates to a kind of stationery, relates to more specifically a kind of novel chalk casing.
Background technology
At present, chalk is still the important tool of class-teaching of teacher writing on the blackboard, and hand-held chalk writes, and can not stay unavoidably chalk dust on the other hand, and chalk is difficult for more in short-term practicality and will changes, and causes certain waste.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of novel chalk casing is provided, and facilitates teachers and students' writing on the blackboard, reduces chalk dust and is infected with finger, saves chalk.
The technical scheme that its technical problem that solves the utility model adopts is: this a kind of novel chalk casing comprises cutting ferrule, sheath body, inner guide, outer guide rod, bonnet, spring, driver plate, connecting rod and elongated slot; Described chalk sleeve has a cutting ferrule that can insert chalk; The openend of described cutting ferrule connects a driver plate by connecting rod, and the cutting ferrule rear end is connected with inner guide, and the sidewall of cutting ferrule is provided with projection; Described cutting ferrule is placed in a sheath body; Be provided with an outer guide rod that is connected with the sheath body bonnet in described sheath body, inner guide can be contained in outer guide rod; Be provided with spring between described cutting ferrule and bonnet, spring housing is outside on guide rod and be connected with bonnet; The sidewall of described sheath body is axially arranged with an elongated slot, and two long limits of described elongated slot are provided with staggered pawl, and the front end of described elongated slot is provided with an opening; Described driver plate is stuck in the opening that sheath body offers, and the bossing of cutting ferrule is embedded in elongated slot.
The beneficial effects of the utility model are: this a kind of novel chalk casing, facilitate teachers and students' writing on the blackboard, and reduce chalk dust and be infected with finger, save chalk.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing 1 is the structural representation of this a kind of novel chalk casing.
Accompanying drawing 2 is the schematic top plan view of this a kind of novel chalk casing.
In figure, 1. cutting ferrule, 2. sheath body, 3. inner guide, 4. outer guide rod, 5. bonnet, 6. spring, 7. driver plate, 8. connecting rod, 9. elongated slot.
The specific embodiment
In the accompanying drawings, this a kind of novel chalk casing comprises cutting ferrule 1, sheath body 2, inner guide 3, outer guide rod 4, bonnet 5, spring 6, driver plate 7, connecting rod 8 and elongated slot 9; Described chalk sleeve has a cutting ferrule 1 that can insert chalk; The openend of described cutting ferrule 1 connects driver plates 7 by connecting rod 8, and cutting ferrule 1 rear end is connected with inner guide 3, and the sidewall of cutting ferrule 1 is provided with projection; Described cutting ferrule 1 is placed in a sheath body 2; Be provided with an outer guide rod 4 that is connected with sheath body 2 bonnets 5 in described sheath body 2, inner guide 3 can be contained in outer guide rod 4; 5 of described cutting ferrule 1 and bonnets are provided with spring 6, and spring 6 overlaps outside on guide rod 4 and is connected with bonnet 5; The sidewall of described sheath body 2 is axially arranged with an elongated slot 9, and two long limits of described elongated slot 9 are provided with staggered pawl, and the front end of described elongated slot 9 is provided with an opening; Described driver plate 7 is stuck in the opening that sheath body 2 offers, and the bossing of cutting ferrule 1 is embedded in elongated slot 9.
The cross section of described connecting rod 8 is the regular polygon that is not more than hexagon, and cutting ferrule 1 is slidably connected with connecting rod 8.
Under the elastic reaction of spring 6, the bossing of cutting ferrule 1 is stuck on the pawl that elongated slot 9 is provided with, and stirs driver plate 7, and the projection of cutting ferrule 1 breaks away from pawl, and cutting ferrule 1 moves forward and snaps into along connecting rod 8 on the next pawl of another side of elongated slot 9, and chalk progressively stretches out thus.When chalk is installed, the cutting ferrule 1 and cutting ferrule 1 is pressed into sheath body 2 depths of directly chalk being packed into.
Claims (2)
1. a novel chalk casing, comprise cutting ferrule (1), sheath body (2), inner guide (3), outer guide rod (4), bonnet (5), spring (6), driver plate (7), connecting rod (8) and elongated slot (9); Described chalk sleeve has a cutting ferrule (1) that can insert chalk; It is characterized in that: the openend of described cutting ferrule (1) connects a driver plate (7) by connecting rod (8), and cutting ferrule (1) rear end is connected with inner guide (3), and the sidewall of cutting ferrule (1) is provided with projection; Described cutting ferrule (1) is placed in a sheath body (2); Be provided with an outer guide rod (4) that is connected with sheath body (2) bonnet (5) in described sheath body (2), inner guide (3) can be contained in outer guide rod (4); Be provided with spring (6) between described cutting ferrule (1) and bonnet (5), it is upper and be connected with bonnet (5) that spring (6) overlaps outside guide rod (4); The sidewall of described sheath body (2) is axially arranged with an elongated slot (9), and two long limits of described elongated slot (9) are provided with staggered pawl, and the front end of described elongated slot (9) is provided with an opening; Described driver plate (7) is stuck in the opening that sheath body (2) offers, and the bossing of cutting ferrule (1) is embedded in elongated slot (9).
2. a kind of novel chalk casing according to claim 1, it is characterized in that: the cross section of described connecting rod (8) is the regular polygon that is not more than hexagon, cutting ferrule (1) is slidably connected with connecting rod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725116 CN202986464U (en) | 2012-12-26 | 2012-12-26 | Novel chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725116 CN202986464U (en) | 2012-12-26 | 2012-12-26 | Novel chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202986464U true CN202986464U (en) | 2013-06-12 |
Family
ID=48557676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220725116 Expired - Fee Related CN202986464U (en) | 2012-12-26 | 2012-12-26 | Novel chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202986464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786696A (en) * | 2015-04-14 | 2015-07-22 | 重庆交通大学 | Multifunctional chalk protecting device |
-
2012
- 2012-12-26 CN CN 201220725116 patent/CN202986464U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786696A (en) * | 2015-04-14 | 2015-07-22 | 重庆交通大学 | Multifunctional chalk protecting device |
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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: 20130612 Termination date: 20131226 |