CN203305723U - Triangular ruler with Y-shaped lead grinding opening - Google Patents
Triangular ruler with Y-shaped lead grinding opening Download PDFInfo
- Publication number
- CN203305723U CN203305723U CN2013203355209U CN201320335520U CN203305723U CN 203305723 U CN203305723 U CN 203305723U CN 2013203355209 U CN2013203355209 U CN 2013203355209U CN 201320335520 U CN201320335520 U CN 201320335520U CN 203305723 U CN203305723 U CN 203305723U
- Authority
- CN
- China
- Prior art keywords
- steel
- triangular ruler
- shaped lead
- shaped
- grinding opening
- 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
Links
Abstract
The utility model discloses a triangular ruler with a Y-shaped lead grinding opening. The triangular ruler comprises a triangular ruler body, and a steel Y-shaped lead grinding opening. The triangular ruler is characterized in that the steel Y-shaped lead grinding opening is embedded in one side of the triangular ruler body without scales; the wide part of the steel Y-shaped lead grinding opening is arranged at the inner edge of the triangular ruler body and is 3-3.5mm wide; the width of the narrowest part of the steel Y-shaped lead grinding opening is 1-1.5mm. The lead core grinding speed is high when a lead core is grinded by the steel Y-shaped lead grinding opening in the triangular ruler body, so that the time is saved; the grinded lead core shape just accords with the requirements of scribbling an answer sheet; the mood of an examinee can be stabilized; normal development is facilitated.
Description
Technical field
The utility model relates to mathematical studying, teaching aid, is specifically related to a kind of set square with plumbous mouthful of Y-shaped mill.
Background technology
Set square is one of requisite apparatus in mathematical education and study, common set square only has line or measures length, measures the effect of several common angles, in present examination, often to use the pencil coating writing answer sheet, with the lead for retractable pencil that knife is cut out, can not be directly used in coating writing answer sheet, need to wear into certain shape and fill in speed with raising, and student's bad assurance when mill lead core often needs the time of growing could the break-in lattice.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of set square with plumbous mouthful of Y-shaped mill.
The utility model is realized by following technological means: a kind of set square with plumbous mouthful of Y-shaped mill, comprise plumbous mouthful of set square, steel Y-shaped mill, it is characterized in that: the plumbous mouth of described steel Y-shaped mill is embedded in the side of set square without scale, the wide place that steel Y-shaped mill is plumbous mouthful is arranged on the inside edge of set square and width is 3 ~ 3.5mm, and plumbous mouthful of the steel Y-shaped mill width at narrow place is 1 ~ 1.5mm.
With plumbous mouthful of the mill of the steel Y-shaped on set square, come mill lead core speed fast, save time, the lead for retractable pencil shape ground also just in time meets the requirement of coating writing answer sheet, can stablize examinee's mood, is convenient to normal performance.
The utility model is simple in structure, manufacturing cost and use cost all lower, easy to manufacture, very easily promote.
Although the above is described preferred embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; in the scope situation that does not break away from the protection of the utility model aim, can also make the concrete conversion of a lot of forms, within these all belong to protection domain of the present utility model.
The accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model
In figure: 1-set square, plumbous mouthful of 2-steel Y-shaped mill.
The specific embodiment
Below in conjunction with accompanying drawing explanation and the specific embodiment, the utility model is described in further detail:
As shown in FIG., a kind of set square with plumbous mouthful of Y-shaped mill, comprise plumbous mouthful 2, set square 1, steel Y-shaped mill, it is characterized in that: described steel Y-shaped mill is embedded in the side of set square 1 without scale for plumbous mouthful 2, the wide place that steel Y-shaped mill is plumbous mouthful 2 is arranged on the inside edge of set square and width is 3 ~ 3.5mm, and plumbous mouthful 2, the steel Y-shaped mill width at narrow place is 1 ~ 1.5mm.
With the mill of the steel Y-shaped on set square, come mill lead core speed fast for plumbous mouthful 2, save time, the lead for retractable pencil shape ground also just in time meets the requirement of coating writing answer sheet, can stablize examinee's mood, is convenient to normal performance.
Claims (1)
1. one kind is ground the set square of plumbous mouthful with Y-shaped, comprise plumbous mouthful of set square, steel Y-shaped mill, it is characterized in that: the plumbous mouth of described steel Y-shaped mill is embedded in the side of set square without scale, the wide place that steel Y-shaped mill is plumbous mouthful is arranged on the inside edge of set square and width is 3 ~ 3.5mm, and plumbous mouthful of the steel Y-shaped mill width at narrow place is 1 ~ 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203355209U CN203305723U (en) | 2013-06-10 | 2013-06-10 | Triangular ruler with Y-shaped lead grinding opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203355209U CN203305723U (en) | 2013-06-10 | 2013-06-10 | Triangular ruler with Y-shaped lead grinding opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203305723U true CN203305723U (en) | 2013-11-27 |
Family
ID=49611954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203355209U Expired - Fee Related CN203305723U (en) | 2013-06-10 | 2013-06-10 | Triangular ruler with Y-shaped lead grinding opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203305723U (en) |
-
2013
- 2013-06-10 CN CN2013203355209U patent/CN203305723U/en not_active Expired - Fee Related
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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: 20131127 Termination date: 20140610 |