CN201154602Y - Chalk holder device - Google Patents
Chalk holder device Download PDFInfo
- Publication number
- CN201154602Y CN201154602Y CNU2008200557299U CN200820055729U CN201154602Y CN 201154602 Y CN201154602 Y CN 201154602Y CN U2008200557299 U CNU2008200557299 U CN U2008200557299U CN 200820055729 U CN200820055729 U CN 200820055729U CN 201154602 Y CN201154602 Y CN 201154602Y
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- CN
- China
- Prior art keywords
- chalk
- pipe
- hollow
- sheath
- truncated cone
- 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 chalk sheath device, which relates to the technical field of the stationery products. In order to solve the problems that chalks are easy to dirty hands and short chalks are difficult for holding, the utility model provides the technical proposal that the chalk sheath device is characterized by comprising an inner sheath (3) and an outer sheath (2); the inner sheath (3) has a structure of a hollow pipe and the surface of the inner sheath (3) is provided with outer threads; the same end of the inner sheath (3) is a. provided with an elongated slot cut (3-1) and b. provide with an inclined surface or arc surface at the intersecting position of an end surface and a pipe column surface; the outer sheath (2) has a structure of a hollow pipe; the hollow part of the pipe is a truncated cone hollow area (2-1) and a cylindrical hollow area (2-2) which are communicated with each other; the hollow part of the pipe is provided with inner threads; the inner threads match with the outer threads; the chalk is arranged in the inner sheath (3) which is arranged in the outer sheath (2). The chalk sheath device has the advantages of being capable of preventing the chalks from dirtying the hand as well as being easy for holding the short chalks and reducing waste.
Description
Technical field
The utility model relates to the technical field of stationery product, particularly relates to a kind of chalk sleeve device.
Background technology
Teacher writes on blackboard on class, and to the defective of using chalk to exist, everybody has been accustomed to, and does not improve.Now, the defective of using chalk to exist has two: first chalk is made hand dirty easily, and it two is when chalk is about to use up, and the clamping difficulty often just abandons and gets over, causes waste.
People wish to have new product to emerge, to overcome above-mentioned two defectives.
The utility model content
Chalk is made hand dirty easily and the problem of short and small chalk clamping difficulty in order to solve, and the utility model proposes following technical scheme.
1. chalk sleeve device, center clamping chalk, cover and overcoat in comprising;
Cover is the structure of hollow pipe in described, and external screw thread is offered on the surface of hollow pipe; Same end at interior cover is: a. offers the elongated slot breach, and the intersection on b. end face and tubing string surface is inclined-plane or cambered surface;
Described overcoat is the structure of hollow pipe, and hollow position is truncated cone hollow out and the cylindrical hollow out that is connected in the pipe; Hollow position is offered internal thread in the described pipe;
Described external screw thread and internal thread, the two threaded engagement;
Described chalk among interior cover, in be enclosed among the overcoat.
2. described elongated slot breach is more than two and spacing equates.
3. described overcoat, its appearance at truncated cone hollow out one end is a truncated cone, described truncated cone is the truncated cone on inclined-plane or the truncated cone of cambered surface.
4. described overcoat is shorter than interior cover.
The beneficial effects of the utility model are: the utility model device, provide a kind of new product to society, and use it not only can avoid chalk that hand is made dirty, and can carry out clamping at an easy rate, write short and small chalk, cut the waste.
Description of drawings
Fig. 1 is one of schematic diagram among the embodiment one;
Fig. 2 be among the embodiment one schematic diagram two;
Fig. 3 be among the embodiment one schematic diagram three.
The number in the figure explanation
1. chalk; 2. overcoat; 2-1. truncated cone hollow out;
2-2. cylindrical hollow out; 3. interior cover; 3-1. elongated slot breach.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The specific embodiment
Chalk is made hand dirty easily and the problem of short and small chalk clamping difficulty in order to solve, and the utility model proposes relevant technical scheme.
1. a chalk sleeve device has interior cover 3 and overcoat 2; Chalk among interior cover 3, interior cover 3 is among overcoat 2.
Hollow position is offered internal thread in the pipe of overcoat 2; For internal thread, a. can be opened in truncated cone hollow out 2-1; B. can be opened in cylindrical hollow out 2-2; C. can be opened in truncated cone hollow out 2-1 place and cylindrical hollow out 2-2 place simultaneously.
During use, in chalk is contained among the cover 3, interior cover 3 is contained among the overcoat 2; Interior cover 3 is done relative rotation with overcoat 2, and the front portion of interior cover 3 is subjected to the compressing of overcoat 2 truncated cone hollow out 2-1, the shrinkage in width of elongated slot breach 3-1, thus the banding chalk.
Suggestion is in design with when producing: above-mentioned external screw thread or internal thread, at the position that rotates near the end, should be progressively shallow go out, and promptly the degree of depth of screw thread is more and more littler, so, can realize the shrinkage in width of elongated slot breach 3-1 smoothly.
Optional technical scheme is below described.
Optional technical scheme 1, described elongated slot breach 3-1 is more than two and spacing equates.
Optional technical scheme 2, described overcoat 2, its appearance at truncated cone hollow out 2-1 one end is a truncated cone, described truncated cone is the truncated cone on inclined-plane or the truncated cone of cambered surface.
Optional technical scheme 3, described overcoat 2 is than interior cover 3 weak points.In use, hand-held interior cover 3, one a hand-held overcoat 2 carries out relative rotation.
Embodiment one
Describe in conjunction with Fig. 1, Fig. 2 and Fig. 3.
Earlier the label among the figure is described.The 1st, chalk; The 2nd, overcoat; 2-1 is the truncated cone hollow out; 2-2 is cylindrical hollow out; The 3rd, interior cover; 3-1 is the elongated slot breach.
Fig. 1 is the schematic diagram of the interior cover 3 in the present embodiment, in put and have 4 elongated slot breach (all not drawing among the figure), 4 elongated slot breach equate by 90 ° of even angle Boulezs and spacing.
Fig. 2 is the schematic diagram of the overcoat 2 in the present embodiment.Wherein, the left end of internal thread is progressively shallow goes out (not drawing among the figure).
In the present embodiment: chalk among interior cover 3, interior cover 3 is among overcoat 2; Fig. 3 is the schematic diagram of foregoing description situation.
Claims (4)
1. chalk sleeve device, clamping chalk in center is characterized in that: comprise interior cover (3) and overcoat (2);
Cover (3) is the structure of hollow pipe in described, and external screw thread is offered on the surface of hollow pipe; Same end at interior cover (3) is: a. offers elongated slot breach (3-1), and the intersection on b. end face and tubing string surface is inclined-plane or cambered surface;
Described overcoat (2) is the structure of hollow pipe, and hollow position is truncated cone hollow out (2-1) and the cylindrical hollow out (2-2) that is connected in the pipe; Hollow position is offered internal thread in the described pipe;
Described external screw thread and internal thread, the two threaded engagement;
Described chalk among the interior cover (3), interior cover (3) is among overcoat (2).
2. chalk sleeve device according to claim 1 is characterized in that: described elongated slot breach (3-1) is more than two and spacing equates.
3. chalk sleeve device according to claim 1 is characterized in that: described overcoat (2), and its appearance at conical hollow out (2-1) end is a truncated cone, described truncated cone is the truncated cone on inclined-plane or the truncated cone of cambered surface.
4. chalk sleeve device according to claim 1 is characterized in that: described overcoat (2) is shorter than interior cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200557299U CN201154602Y (en) | 2008-02-26 | 2008-02-26 | Chalk holder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200557299U CN201154602Y (en) | 2008-02-26 | 2008-02-26 | Chalk holder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201154602Y true CN201154602Y (en) | 2008-11-26 |
Family
ID=40102389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200557299U Expired - Fee Related CN201154602Y (en) | 2008-02-26 | 2008-02-26 | Chalk holder device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201154602Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150718A (en) * | 2015-09-11 | 2015-12-16 | 无锡市翱宇特新科技发展有限公司 | Chalk auxiliary writing device |
-
2008
- 2008-02-26 CN CNU2008200557299U patent/CN201154602Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150718A (en) * | 2015-09-11 | 2015-12-16 | 无锡市翱宇特新科技发展有限公司 | Chalk auxiliary writing 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: 20081126 |