CN204605274U - A kind of novel chalk casing - Google Patents
A kind of novel chalk casing Download PDFInfo
- Publication number
- CN204605274U CN204605274U CN201520302540.5U CN201520302540U CN204605274U CN 204605274 U CN204605274 U CN 204605274U CN 201520302540 U CN201520302540 U CN 201520302540U CN 204605274 U CN204605274 U CN 204605274U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- outer tube
- pipe
- screw rod
- 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.The internal diameter of chalk sleeve outer tube lower end of pipe in chalk sleeve is radially provided with round turntable, is provided with screw rod in the screwed hole in the axle center of round turntable; Top and the tapped sleeve of screw rod are into a single integrated structure, and sleeve coordinates with the external screw thread of the round boss of the bottom of chalk body and connects; The outer, footpath of sleeve is axially arranged with two symmetries, uniform raised line, in the elongated slot that the inwall wall thickness part that raised line embeds pipe in chalk sleeve is respectively arranged vertically, elongated slot start from pipe in chalk sleeve top, terminate in interior pipe clamp ring corresponding position.After the utility model and novel chalk support the use, the round boss of novel chalk and sleeve are screwed, novel chalk can move up or down in pipe in chalk sleeve, not frangibility, conveniently writes, and can also cut the waste.
Description
Technical field
The utility model relates to chalk sleeve technical field, especially a kind of novel chalk casing.
Background technology
Existing chalk is generally the truncated cone-shaped that is thick, is thin, by calcium sulfate, calcium carbonate and a small amount of calcium chloride add water stir into pasty state, injection molding after drying form.Because chalk is hard and crisp, be easy to when writing fracture.Meanwhile, be difficult to pinch during a remaining little budgust, cause the waste of chalk.
On 05 12nd, 2015, inventor have submitted the patent application that is called " a kind of novel chalk ".The main technical schemes of this application is: a kind of novel chalk comprising cylindrical chalk body, the bottom of cylindrical chalk body is provided with round boss, round boss is provided with external screw thread, round boss is aimed at the sleeve of novel chalk casing, can move up or down in pipe in chalk sleeve after screwing; The height dimension of round boss is 0.5-1.0cm.After this utility model and novel chalk casing support the use, not frangibility, conveniently writes, and can also cut the waste.
Utility model content
The purpose of this utility model be to provide a kind of support the use with novel chalk after can make novel chalk not frangibility, the novel chalk casing conveniently writing, can also cut the waste.
The technical solution of the utility model is: a kind of novel chalk casing, comprise pipe in chalk sleeve outer tube and chalk sleeve, the upper end of described chalk sleeve outer tube is provided with outer tube snap ring, in described outer tube snap ring and chalk sleeve, the interior pipe clamp ring adaptation of the lower end of pipe is tightly locked, the lower end of chalk sleeve outer tube is provided with internal thread and coordinates with the externally threaded plug of band and connects, main feature of the present utility model is: the internal diameter of described chalk sleeve outer tube lower end of pipe in chalk sleeve is radially provided with round turntable, screw rod is provided with in the screwed hole in the axle center of described round turntable, during rotary chalk cap outer tube, along with the rotation of round turntable, screw rod can move up or down.
Top and the tapped sleeve of described screw rod are into a single integrated structure, described sleeve coordinates with the external screw thread of the round boss of the bottom of chalk body and connects, after round boss and sleeve screw, chalk body and sleeve can move up or down in pipe in chalk sleeve along with screw rod.
The outer, footpath of described sleeve is axially arranged with two symmetries, uniform raised line, in the elongated slot that the inwall wall thickness part that described raised line embeds pipe in chalk sleeve is respectively arranged vertically, described elongated slot start from pipe in chalk sleeve top, terminate in interior pipe clamp ring corresponding position, guarantee that sleeve is along with screw rod movement flexibly up or down in elongated slot, but can not deviate from from the lower end of elongated slot.
The height dimension of described sleeve is 0.7-1.2cm.
Because the utility model adopts said structure, after supporting the use with novel chalk, the round boss of novel chalk and sleeve are screwed, novel chalk can move up or down in pipe in chalk sleeve, not frangibility, conveniently writes, and can also cut the waste.
Accompanying drawing explanation
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the concrete structure according to a kind of novel chalk casing that the utility model proposes.
Fig. 2 is the A-A sectional view of the concrete structure according to a kind of novel chalk casing that the utility model proposes.
Fig. 3 is the structural representation of the concrete structure of novel chalk.
In figure, (1) is chalk body, and (2) are elongated slot, and (3) are for managing in chalk sleeve, (4) be sleeve, (5) be screw rod, (6) are outer tube snap ring, and (7) are round turntable, (8) be chalk sleeve outer tube, (9) be plug, (10) are raised line for interior pipe clamp ring, (11), (12) be round boss, (13) are external screw thread.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described further.
Embodiment: as shown in drawings, a kind of novel chalk casing, comprise pipe (3) in chalk sleeve outer tube (8) and chalk sleeve, the upper end of chalk sleeve outer tube (8) is provided with outer tube snap ring (6), outer tube snap ring (6) is tightly locked with interior interior pipe clamp ring (10) adaptation of managing the lower end of (3) of chalk sleeve, the lower end of chalk sleeve outer tube (8) is provided with internal thread and coordinates with the externally threaded plug of band (9) and connects, main feature of the present utility model is: the internal diameter of chalk sleeve outer tube (8) lower end of pipe (3) in chalk sleeve is radially provided with round turntable (7), screw rod (5) is provided with in the screwed hole in the axle center of round turntable (7), time rotary chalk cap outer tube (8), along with the rotation of round turntable (7), screw rod (5) can move up or down.
Top and the tapped sleeve (4) of screw rod (5) are into a single integrated structure, sleeve (4) coordinates with the external screw thread (13) of the round boss (12) of the bottom of chalk body (1) and connects, after round boss (12) and sleeve (4) screw, chalk body (1) and sleeve (4) can move up or down along with screw rod (5) is managed in (3) in chalk sleeve.
The outer, footpath of sleeve (4) is axially arranged with two symmetries, uniform raised line (11), in the elongated slot (2) that the inwall wall thickness part that described raised line (11) embeds pipe (3) in chalk sleeve is respectively arranged vertically, elongated slot (2) start from pipe (3) in chalk sleeve top, terminate in interior pipe clamp ring (10) corresponding position, guarantee that sleeve (4) is along with screw rod (5) movement flexibly up or down in elongated slot (2), but can not deviate from from the lower end of elongated slot (2).
The height dimension of sleeve (4) is 1.0cm.
Working condition of the present utility model is: aimed at by sleeve of the present utility model and screw with the round boss of novel chalk, rotary chalk cap outer tube, novel chalk can be made to move up or down in pipe in chalk sleeve.
Claims (2)
1. a novel chalk casing, comprise pipe (3) in chalk sleeve outer tube (8) and chalk sleeve, the upper end of described chalk sleeve outer tube (8) is provided with outer tube snap ring (6), described outer tube snap ring (6) is tightly locked with interior interior pipe clamp ring (10) adaptation of managing the lower end of (3) of chalk sleeve, the lower end of chalk sleeve outer tube (8) is provided with internal thread and coordinates with the externally threaded plug of band (9) and connects, it is characterized in that: the internal diameter of described chalk sleeve outer tube (8) lower end of pipe (3) in chalk sleeve is radially provided with round turntable (7), screw rod (5) is provided with in the screwed hole in the axle center of described round turntable (7), time rotary chalk cap outer tube (8), along with the rotation of round turntable (7), screw rod (5) can move up or down,
Top and the tapped sleeve (4) of described screw rod (5) are into a single integrated structure, described sleeve (4) coordinates with the external screw thread (13) of the round boss (12) of the bottom of chalk body (1) and connects, after round boss (12) and sleeve (4) screw, chalk body (1) and sleeve (4) can move up or down along with screw rod (5) is managed in (3) in chalk sleeve;
The outer, footpath of described sleeve (4) is axially arranged with two symmetries, uniform raised line (11), in the elongated slot (2) that the inwall wall thickness part that described raised line (11) embeds pipe (3) in chalk sleeve is respectively arranged vertically, described elongated slot (2) start from pipe (3) in chalk sleeve top, terminate in interior pipe clamp ring (10) corresponding position, guarantee that sleeve (4) is along with screw rod (5) movement flexibly up or down in elongated slot (2), but can not deviate from from the lower end of elongated slot (2).
2. a kind of novel chalk casing according to claim 1, is characterized in that, the height dimension of described sleeve (4) is 0.7-1.2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520302540.5U CN204605274U (en) | 2015-05-12 | 2015-05-12 | A kind of novel chalk casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520302540.5U CN204605274U (en) | 2015-05-12 | 2015-05-12 | A kind of novel chalk casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204605274U true CN204605274U (en) | 2015-09-02 |
Family
ID=53957852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520302540.5U Expired - Fee Related CN204605274U (en) | 2015-05-12 | 2015-05-12 | A kind of novel chalk casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204605274U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773009A (en) * | 2015-05-12 | 2015-07-15 | 罗福仲 | Novel chalk cover |
-
2015
- 2015-05-12 CN CN201520302540.5U patent/CN204605274U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773009A (en) * | 2015-05-12 | 2015-07-15 | 罗福仲 | Novel chalk cover |
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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 |
Granted publication date: 20150902 Termination date: 20160512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |