CN103640369A - Multifunctional chalk - Google Patents
Multifunctional chalk Download PDFInfo
- Publication number
- CN103640369A CN103640369A CN201310688633.1A CN201310688633A CN103640369A CN 103640369 A CN103640369 A CN 103640369A CN 201310688633 A CN201310688633 A CN 201310688633A CN 103640369 A CN103640369 A CN 103640369A
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- China
- Prior art keywords
- chalk
- cylindrical
- square column
- column section
- section
- 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.)
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Abstract
The invention discloses multifunctional chalk consisting of a cylindrical section (1) and a square column section (2) which are integrally formed, wherein a cylindrical dent (3) is formed in one side surface of the square column section (2), a cylindrical bulge (4) is formed in the opposite side surface, and the cylindrical dent (3) and the cylindrical bulge (4) are matched geometrically. Single lines with different thicknesses can be drawn by changing the contact position of the chalk and a black board surface, and particularly, smearing is more convenient; a plurality of the chalk is matched and spliced by the aid of the dents (3) and the bulges (4), so that a plurality of parallel lines can be drawn, and the thicknesses and the gaps are different; and the chalk can be used for drawing an arc on the black board surface, and at the same time, the multifunctional chalk has the characteristic of simple structure.
Description
Technical field
The invention belongs to chalk, more specifically to a kind of multifunctional chalk.
Background technology
In music, foreign language, the Chinese phonetic alphabet, in the teaching process such as make a list, often must on blackboard, with chalk, paint many parallel lines, with common cylindric chalk, paint it, inefficiency not only, the collimation between lines is also poor, the thickness conversion difficulty of lines, the chalk that often must fracture or wear and tear can be realized, and the circular arc of divider calipers model, therefore provides a kind of multifunctional chalk to be very important voluntarily.
Summary of the invention
The object of this invention is to provide a kind of multifunctional chalk.
A kind of multifunctional chalk of the present invention, cylindrical section and square column section by integrated molding form, there is a cylindrical depression one side of described square column section, and there is a cylindrical protrusions relative another side, between described depression and described projection, is the matching relationship on geometric meaning.
The present invention has following beneficial effect compared with prior art:
Convert the position that chalk of the present invention contacts with blackboard surface, can draw the single lines that thickness is different, especially more convenient smearing, by several chalks of the present invention, borrow between described depression and described projection and coordinate spelling mutually, can draw many parallel lines, and thickness and spacing also can be different, and chalk of the present invention also can be at blackboard surface upper drawing circle arc.The simple feature of while lamps structure.
Accompanying drawing explanation
Fig. 1 is the perspective view of chalk of the present invention.
Fig. 2 is spelled the effect schematic diagram of use mutually by seven chalks of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Shown in Fig. 1, a kind of multifunctional chalk of the present invention, consists of cylindrical section 1 and the square column section 2 of integrated molding, and there is a cylindrical depression 3 side of described square column section 2, there is a cylindrical protrusions 4 relative another side, described depression 3 and described protruding 4 matching relationships that are on geometric meaning.
Convert the position that chalk of the present invention contacts with blackboard surface, as described in the termination of cylindrical section 1, the rib of described square column section 2 or angle, can draw the single lines that thickness is different.
By several chalks of the present invention, borrow described depression 3 to coordinate mutually and spell with described protruding 4, can draw many parallel lines, as shown in Figure 2, by seven chalks of the present invention, spelled mutually, can once draw the parallel lines that seven stripe pitch are less, as allow every adjacent three chalks placed in the middle each protruding 4 as rotating shaft to paper introversion and extroversion, rotate as described in take, can once draw the parallel lines that 4 stripe pitch are larger, the lines of described cylindrical section 1 termination picture are thinner, the lines of described square column section 2 termination pictures are thicker, a side have a cylindrical depression 3.
Take described cylindrical section 1 termination is the center of circle, can be at blackboard surface upper drawing circle arc by 2 jiaos of described square column sections or described protruding 4 terminations.
Claims (1)
1. a multifunctional chalk, it is characterized in that, cylindrical section (1) and square column section (2) by integrated molding form, there is a cylindrical depression (3) one side of described square column section (2), there is a cylindrical protrusions (4) relative another side, between described depression (3) and described projection (4), is the matching relationship on geometric meaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688633.1A CN103640369A (en) | 2013-12-06 | 2013-12-06 | Multifunctional chalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688633.1A CN103640369A (en) | 2013-12-06 | 2013-12-06 | Multifunctional chalk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103640369A true CN103640369A (en) | 2014-03-19 |
Family
ID=50245718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310688633.1A Pending CN103640369A (en) | 2013-12-06 | 2013-12-06 | Multifunctional chalk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103640369A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375463Y (en) * | 1999-01-19 | 2000-04-26 | 百能工业股份有限公司 | Building blocks type pen article |
| CN203004654U (en) * | 2012-12-27 | 2013-06-19 | 龚俊豪 | Chalk with cuboid main body |
-
2013
- 2013-12-06 CN CN201310688633.1A patent/CN103640369A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375463Y (en) * | 1999-01-19 | 2000-04-26 | 百能工业股份有限公司 | Building blocks type pen article |
| CN203004654U (en) * | 2012-12-27 | 2013-06-19 | 龚俊豪 | Chalk with cuboid main body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140319 |