CN201800367U - Novel chalk device - Google Patents
Novel chalk device Download PDFInfo
- Publication number
- CN201800367U CN201800367U CN2010205604255U CN201020560425U CN201800367U CN 201800367 U CN201800367 U CN 201800367U CN 2010205604255 U CN2010205604255 U CN 2010205604255U CN 201020560425 U CN201020560425 U CN 201020560425U CN 201800367 U CN201800367 U CN 201800367U
- Authority
- CN
- China
- Prior art keywords
- chalk
- push rod
- drum
- tube
- novel
- 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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- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The utility model discloses a novel chalk device, comprising a chalk drum; the inner wall of the chalk drum is provided with inner threads; the chalk drum is provided with a push rod; the lower end of the push rod penetrates through the bottom of the chalk drum to enter the chalk drum; the lower end of the push rod is provided with a blocking piece body capable of moving along the inner threads; and a port rubber bush for clamping a chalk is sheathed at an opening position of the chalk drum. The novel chalk device adopts the inner threads to control the push rod to lift or fall, replaces the structure mode that a spring is matched with a fastener in the prior art, is simple in structure, and enhances the firmness of the push rod, particularly, a port rubber bush arranged at the opening position of the chalk drum is elastic, can hoop the chalk firmly, and is not limited by the shape of the chalk, thus expanding the range of application objects and saving the use cost and the maintenance cost; in addition, after being worn, the port rubber bush can be replaced in time, thus being convenient for a user to operate.
Description
Technical field
The utility model relates to a kind of stationery, relates in particular to a kind of novel chalk device.
Background technology
At present, seldom have on the market to prevent to point the instrument that directly contacts with chalk, the finger of making dirty easily uses even damage user's finger because the user is long-term, and more most of chalk sleeves uses inconvenience not attractive in appearance and not promoted.Also there is more chalk structure in the prior art, but the general more complicated of its internal structure, manufacture craft is loaded down with trivial details, difficult quilt is extensively promoted, and its inner spring structure damages easily, increased user's use cost and maintenance cost, and it is only applicable to the taper chalk, the form that adapts to chalk is more single.
This shows that prior art needs further improvement and develops.
The utility model content
The utility model provides a kind of novel chalk device for solving above-mentioned defective of the prior art, and chalk sleeve of the prior art has been carried out scientific and reasonable improvement, with user-friendly, reduces the infringement to user's finger.
For solving the problems of the technologies described above, the utility model scheme comprises:
A kind of novel chalk device, it comprises the chalk tube, wherein, the inwall of this chalk tube is provided with internal thread, this chalk tube disposes a push rod, and the bottom that the lower end of this push rod passes the chalk tube enters in the chalk tube, and the lower end of push rod is provided with one can stop lamellar body along what internal thread moved; The opening part of this chalk tube is equipped with the port rubber case that is used to clamp chalk.
Described novel chalk device, wherein, the length of above-mentioned chalk tube is between ten centimetres to 13 centimetres, its opening diameter is between two centimetres to three centimetres.
A kind of novel chalk device that the utility model provides, adopt the rising or the decline of internal thread control push rod, replace the prior art medi-spring to cooperate the frame mode of buckle, it is simple in structure, strengthened the fastness of push rod, especially the port rubber case of the opening part setting of chalk tube has elasticity, banding chalk that can be firm, be not subjected to the restriction of chalk profile, expanded the scope of its application, save user's use cost and maintenance cost, and can in time change after the wearing and tearing of port rubber case, made things convenient for user's operation; The user can use wherein chalk by gripping the port rubber case, avoid user's finger directly to contact with chalk, and the port rubber case is soft, has reduced the extent of damage that the user is pointed.
Description of drawings
Fig. 1 is the cross-section structure sketch of novel chalk device in the utility model;
The specific embodiment
The utility model provides a kind of novel chalk device, and is clearer, clear and definite in order to make the purpose of this utility model, technical scheme and advantage, below with reference to accompanying drawing and embodiment, the utility model further described.
The utility model provides a kind of novel chalk device, adopts the frame mode of the frame mode replacement prior art medi-spring of internal thread, has made things convenient for user's operation, reduces the infringement to user's finger.As shown in Figure 1, the novel chalk device comprises chalk tube 1, and the inwall of this chalk tube 1 is provided with internal thread, and this chalk tube disposes a push rod 2, the bottom that the lower end of this push rod 2 passes the chalk tube enters in the chalk tube, and the lower end of push rod 2 is provided with one can stop lamellar body 3 along what internal thread moved; The opening part of this chalk tube 1 is equipped with the port rubber case 4 that is used to clamp chalk.The user can adjust push rod 2 as required and stretch into length in the chalk tube 1, thereby determines that chalk exposes the length of chalk tube 1, has made things convenient for user's operation, has saved the use amount of chalk.
In order further to improve performance of the present utility model, the length of chalk tube 1 is between ten centimetres to 13 centimetres, and its opening diameter is between two centimetres to three centimetres.Make chalk tube 1 more suitable, made things convenient for user's operation with the outline of chalk.
Should be understood that; above-mentioned description at preferred embodiment is comparatively detailed; can not therefore think restriction to the utility model scope of patent protection; those of ordinary skill in the art is under enlightenment of the present utility model; do not breaking away under the scope situation that the utility model claim protected; can also make various deformation such as replacement, simple combination, these all fall within the protection domain of the present utility model, and the scope of asking for protection of the present utility model should be as the criterion with claims.
Claims (2)
1. novel chalk device, it comprises the chalk tube, it is characterized in that: the inwall of this chalk tube is provided with internal thread, and this chalk tube disposes a push rod, the bottom that the lower end of this push rod passes the chalk tube enters in the chalk tube, and the lower end of push rod is provided with one can stop lamellar body along what internal thread moved; The opening part of this chalk tube is equipped with the port rubber case that is used to clamp chalk.
2. novel chalk device according to claim 1 is characterized in that: the length of above-mentioned chalk tube is between ten centimetres to 13 centimetres, and its opening diameter is between two centimetres to three centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205604255U CN201800367U (en) | 2010-10-14 | 2010-10-14 | Novel chalk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205604255U CN201800367U (en) | 2010-10-14 | 2010-10-14 | Novel chalk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201800367U true CN201800367U (en) | 2011-04-20 |
Family
ID=43869884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205604255U Expired - Fee Related CN201800367U (en) | 2010-10-14 | 2010-10-14 | Novel chalk device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201800367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274922A (en) * | 2018-02-07 | 2018-07-13 | 嘉善信息技术工程学校 | A kind of teaching chalk set |
| CN108274921A (en) * | 2018-02-07 | 2018-07-13 | 嘉善信息技术工程学校 | A kind of chalk sleeve for preventing dirty hand |
-
2010
- 2010-10-14 CN CN2010205604255U patent/CN201800367U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274922A (en) * | 2018-02-07 | 2018-07-13 | 嘉善信息技术工程学校 | A kind of teaching chalk set |
| CN108274921A (en) * | 2018-02-07 | 2018-07-13 | 嘉善信息技术工程学校 | A kind of chalk sleeve for preventing dirty hand |
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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: 20110420 Termination date: 20111014 |