CN204936586U - A kind of novel chalk casing - Google Patents
A kind of novel chalk casing Download PDFInfo
- Publication number
- CN204936586U CN204936586U CN201520584781.3U CN201520584781U CN204936586U CN 204936586 U CN204936586 U CN 204936586U CN 201520584781 U CN201520584781 U CN 201520584781U CN 204936586 U CN204936586 U CN 204936586U
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- CN
- China
- Prior art keywords
- chalk
- sleeve body
- tray
- propulsion rod
- chalk sleeve
- 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
The utility model discloses a kind of novel chalk casing, comprise chalk sleeve body and propulsion plant, described propulsion plant is located in described chalk sleeve body, described propulsion plant comprises screw propulsion rod and tray, described screw propulsion rod and tray are rotationally connected, the top of described tray is provided with a groove, the size of described groove and the bigger diameter end of chalk adapt, the inwall of described chalk sleeve body is also provided with screw thread, described screw propulsion rod matches with described screw thread, and also comprise retaining mechanism, described retaining mechanism is arranged on the port of export of described chalk sleeve body, and for locking described chalk.The utility model freely can adjust the length that chalk exposes chalk sleeve body, improve the convenience of writing, and because screw propulsion rod and tray are rotationally connected, which obviate in progradation, the chalk caused because of the rotation of screw propulsion rod reverses breakage phenomenon, meanwhile, avoid rocking of chalk, improve the comfort level and non-frangibility of writing.
Description
Technical field
The utility model relates to chalk technical field, particularly relates to a kind of novel chalk casing.
Background technology
Chalk is the writing implement widely used in schedule life, is generally used in education activities and writes on blackboard.Chalk is generally made up of calcium carbonate, calcium sulfate and calcium oxide, and these compositions are not easily decomposed, and particle is larger, teacher at school in, the finger that hold chalk is corroded dry wizened by chalk powder, especially more dry and cracked rough in winter, is unfavorable for healthy.In addition, hard and crisp owing to having chalk, in writing on the blackboard process, one whole chalk easily fractures, and the chalk impact teaching fractureed, what have can not continue use, causes the waste of resource.In view of this, market there is the chalk sleeve being set with chalk, by chalk sleeve in chalk sleeve, facilitate and write, also solve the problem of clean hygiene, but, this chalk sleeve can not adjust the length that chalk exposes chalk sleeve freely, if the length exposed is long, can fracture, if too short, be unfavorable for writing, bringing difficulty to writing.
Utility model content
The utility model mainly to solve in prior art existing technical problem, thus provides one freely can adjust length, not frangibility and write novel chalk casing easily.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
The novel chalk casing that the utility model provides, comprise chalk sleeve body and propulsion plant, described propulsion plant is located in described chalk sleeve body, described propulsion plant comprises screw propulsion rod and tray, described screw propulsion rod and tray are rotationally connected, the top of described tray is provided with a groove, the size of described groove and the bigger diameter end of chalk adapt, the inwall of described chalk sleeve body is also provided with screw thread, described screw propulsion rod matches with described screw thread, and also comprise retaining mechanism, described retaining mechanism is arranged on the port of export of described chalk sleeve body, and for locking described chalk.
Further, described retaining mechanism includes multiple elastic claw in horn-like distribution and retaining ring, and the excircle of described elastic claw is provided with external screw thread, and described retaining ring is set on described elastic claw, and matches with described external screw thread.
Further, the quantity of described elastic claw is two, and the phase of two described elastic claws is also provided with elastic layer to the inside.
Further, described screw propulsion rod is also provided with a limited block away from one end of described tray, and the diameter of described limited block is greater than the diameter of described chalk sleeve body.
Further, described chalk sleeve body adopts transparent material to be made.
The beneficial effects of the utility model are: by being placed in the groove of tray by the bigger diameter end card of chalk, spiral handspike promotes tray and moves, tray drives chalk to stretch out the outside of chalk sleeve body, it freely can adjust the length that chalk exposes chalk sleeve body, improve the convenience of writing, and because screw propulsion rod and tray are rotationally connected, which obviate in progradation, the chalk caused because of the rotation of screw propulsion rod reverses breakage phenomenon, simultaneously, by arranging retaining mechanism locking chalk, when writing, avoid rocking of chalk, improve the comfort level and non-frangibility of writing.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of novel chalk casing of the present utility model;
Fig. 2 is the top view of novel chalk casing of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Consult shown in Fig. 1-2, novel chalk casing of the present utility model, comprise chalk sleeve body 1 and propulsion plant, propulsion plant is located in chalk sleeve body 1, propulsion plant comprises screw propulsion rod 2 and tray 3, screw propulsion rod 2 and tray 3 are rotationally connected, the top of tray 3 is provided with a groove 4, the size of groove 4 and the bigger diameter end of chalk 5 adapt, the inwall of chalk sleeve body 1 is also provided with screw thread, and screw propulsion rod 2 matches with screw thread, and also comprises retaining mechanism, retaining mechanism is arranged on the port of export of chalk sleeve body 1, and for locking chalk 5.The utility model is by being placed in the groove 4 of tray 3 by the bigger diameter end card of chalk 5, spiral handspike 2 promotes tray 3 and moves, tray 3 drives chalk 5 to stretch out the outside of chalk sleeve body 1, it freely can adjust the length that chalk 5 exposes chalk sleeve body 1, improve the convenience of writing, and because screw propulsion rod 2 and tray 3 are rotationally connected, which obviate in progradation, the chalk 5 caused because of the rotation of screw propulsion rod 2 reverses breakage phenomenon, simultaneously, by arranging retaining mechanism locking chalk 5, when writing, avoid rocking of chalk 5, improve the comfort level and non-frangibility of writing.
Concrete, retaining mechanism includes multiple elastic claws 6 in horn-like distribution and retaining ring 7, and the excircle of elastic claw 6 is provided with external screw thread, and retaining ring 7 is set on elastic claw 6, and matches with external screw thread.By rotation lock ring 7, multiple elastic claws 6 of horn-like distribution are tightened up, clamps one end of chalk 5, avoid chalk 5 rocking in writing process.Preferably, the quantity of elastic claw 6 is two, and the phase of two elastic claws 6 is also provided with elastic layer 8 to the inside.Elastic layer 8 being set mainly for having certain elastic buffer effect when making calvus 6 clamp chalk 5, avoiding it excessively to lock and causing chalk 5 to fracture.
Preferably, screw propulsion rod 2 is also provided with a limited block 9 away from one end of tray 3, and limited block 9, for limiting the propelling degree of depth of screw propulsion rod 2, is avoided screw propulsion rod 2 excessively to advance and interfered with chalk sleeve body 1.Wherein, the diameter of limited block 9 is greater than the diameter of chalk sleeve body 1, and limited block 9 also serves the effect of handle, and operator can carry out drive screw propulsion rod 2 and rotate by rotary spacing block 9.Preferably, conveniently observe length and the using state of chalk 5 in chalk sleeve body 1, chalk sleeve body 1 adopts transparent material to be made.
Above, be only detailed description of the invention of the present utility model, but protection domain of the present utility model is not limited thereto, any change of expecting without creative work or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (5)
1. a novel chalk casing, comprise chalk sleeve body (1) and propulsion plant, described propulsion plant is located in described chalk sleeve body (1), it is characterized in that: described propulsion plant comprises screw propulsion rod (2) and tray (3), described screw propulsion rod (2) and tray (3) are rotationally connected, the top of described tray (3) is provided with a groove (4), the size of described groove (4) and the bigger diameter end of chalk (5) adapt, the inwall of described chalk sleeve body (1) is also provided with screw thread, described screw propulsion rod (2) matches with described screw thread, and also comprise retaining mechanism, described retaining mechanism is arranged on the port of export of described chalk sleeve body (1), and for locking described chalk (5).
2. novel chalk casing as claimed in claim 1, it is characterized in that: described retaining mechanism includes multiple elastic claws (6) in horn-like distribution and retaining ring (7), the excircle of described elastic claw (6) is provided with external screw thread, described retaining ring (7) is set on described elastic claw (6), and matches with described external screw thread.
3. novel chalk casing as claimed in claim 2, it is characterized in that: the quantity of described elastic claw (6) is two, the phase of two described elastic claws (6) is also provided with elastic layer (8) to the inside.
4. novel chalk casing as claimed in claim 3, it is characterized in that: described screw propulsion rod (2) is also provided with a limited block (9) away from one end of described tray (3), the diameter of described limited block (9) is greater than the diameter of described chalk sleeve body (1).
5. novel chalk casing as claimed in claim 1, is characterized in that: described chalk sleeve body (1) adopts transparent material to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520584781.3U CN204936586U (en) | 2015-08-06 | 2015-08-06 | A kind of novel chalk casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520584781.3U CN204936586U (en) | 2015-08-06 | 2015-08-06 | A kind of novel chalk casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204936586U true CN204936586U (en) | 2016-01-06 |
Family
ID=55004034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520584781.3U Expired - Fee Related CN204936586U (en) | 2015-08-06 | 2015-08-06 | A kind of novel chalk casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204936586U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106218272A (en) * | 2016-08-29 | 2016-12-14 | 彭展忠 | Teaching dust arrester installation |
| CN106313947A (en) * | 2016-08-29 | 2017-01-11 | 彭展忠 | Environment-friendly dust-free teaching aid with humidifying device |
| CN106364222A (en) * | 2016-08-29 | 2017-02-01 | 彭展忠 | Dust-free teaching system for chalk writing |
| CN106379091A (en) * | 2016-09-12 | 2017-02-08 | 芜湖能盟信息技术有限公司 | Blackboard eraser structure |
| CN106394069A (en) * | 2016-08-29 | 2017-02-15 | 彭展忠 | Dustless set |
| CN106427299A (en) * | 2016-09-12 | 2017-02-22 | 芜湖能盟信息技术有限公司 | Chalk clamping sleeve |
| CN110001241A (en) * | 2019-04-23 | 2019-07-12 | 长沙宁湖机械设备有限公司 | A kind of multi-function chalk casing |
| CN112405578A (en) * | 2020-11-23 | 2021-02-26 | 哈工大机器人（合肥）国际创新研究院 | Pen-shaped workpiece clamping mechanism at tail end of manipulator |
-
2015
- 2015-08-06 CN CN201520584781.3U patent/CN204936586U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106218272A (en) * | 2016-08-29 | 2016-12-14 | 彭展忠 | Teaching dust arrester installation |
| CN106313947A (en) * | 2016-08-29 | 2017-01-11 | 彭展忠 | Environment-friendly dust-free teaching aid with humidifying device |
| CN106364222A (en) * | 2016-08-29 | 2017-02-01 | 彭展忠 | Dust-free teaching system for chalk writing |
| CN106394069A (en) * | 2016-08-29 | 2017-02-15 | 彭展忠 | Dustless set |
| CN106313947B (en) * | 2016-08-29 | 2017-11-14 | 彭展忠 | Environment-friendly dustless teaching aid with humidification device |
| CN106364222B (en) * | 2016-08-29 | 2019-01-01 | 彭展忠 | The dustless system of chalk-writing teaching |
| CN106379091A (en) * | 2016-09-12 | 2017-02-08 | 芜湖能盟信息技术有限公司 | Blackboard eraser structure |
| CN106427299A (en) * | 2016-09-12 | 2017-02-22 | 芜湖能盟信息技术有限公司 | Chalk clamping sleeve |
| CN110001241A (en) * | 2019-04-23 | 2019-07-12 | 长沙宁湖机械设备有限公司 | A kind of multi-function chalk casing |
| CN112405578A (en) * | 2020-11-23 | 2021-02-26 | 哈工大机器人（合肥）国际创新研究院 | Pen-shaped workpiece clamping mechanism at tail end of manipulator |
| CN112405578B (en) * | 2020-11-23 | 2022-07-26 | 哈工大机器人（合肥）国际创新研究院 | Pen-shaped workpiece clamping mechanism at tail end of manipulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160806 |