CN205344243U - Myopia prevention book limit ruler - Google Patents
Myopia prevention book limit ruler Download PDFInfo
- Publication number
- CN205344243U CN205344243U CN201520953791.XU CN201520953791U CN205344243U CN 205344243 U CN205344243 U CN 205344243U CN 201520953791 U CN201520953791 U CN 201520953791U CN 205344243 U CN205344243 U CN 205344243U
- Authority
- CN
- China
- Prior art keywords
- blade
- ruler
- myopia prevention
- groove
- book limit
- 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
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a myopia prevention book limit ruler, include: it is adj. Tabular that blade, blade are rectangle, and one side of blade is equipped with a plurality of scale marks along the equidistant parallel of its axial, and the scale mark of the same radical in every interval is equipped with a plurality of scale intervals on the blade, blade one side is equipped with a recess that is rectangle and sets up, the embedded dipperstick that is equipped with of recess, and the one end of dipperstick is articulated mutually with the bottom of recess. Through dipperstick 3 make things convenient for people when reading confirm and books between the optimum distance to the effect of protection can be played to eyes, eyes myopia is avoided.
Description
Technical field
This utility model relates to stationery technical field, particularly relates to a kind of myopia prevention book limit ruler.
Background technology
Ruler also has person to be a chi, has accurate straight line seamed edge, is used for measuring length and mapping.It is widely used in mathematics, measures, the subject such as engineering.
Chinese invention patent (CN10279699A) discloses a kind of ruler, ruler is socketed with two positioning sleeves, the middle part of positioning sleeve is provided with mean for the opening that ruler inserts, so that the positioning sleeve being socketed on ruler can move along ruler under external force, one end of positioning sleeve is provided with mean for needle point or the eyelet of nib insertion, and the position of eyelet is positioned at the graduated ruler edge of labelling.Certain needle point or nib are inserted in the eyelet of certain positioning sleeve, maintain static as the center of circle, other nib (such as tip of a pencil or ball-point pen tip) is inserted in the eyelet of another positioning sleeve, drive ruler to rotate in paper plane with nib, can accurately draw circle as required；Regulate positioning sleeve position on ruler, the circle of arbitrary diameter can be gone out at the length range inside-paint of ruler.
In life people suffer from bathomorphic ratio get more and more, and, age also increasingly younger ones in an age groupization, the hypotelorism or too far of distance books when bathomorphic reason is due to reading greatly, but, whether whether moderate apart from the distance of books when above-mentioned ruler of the prior art can not judge to read.
Summary of the invention
For the problems referred to above that prior art exists, this utility model aims to provide a kind of myopia prevention book limit ruler, and people can be made to judge when reading, and whether the distance of oneself distance books is moderate, thus eyes play the effect of protection, it is to avoid hypometropia.
Concrete technical scheme is as follows:
A kind of myopia prevention book limit ruler includes: blade, the tabular that blade is rectangle, and the side of blade axially equidistantly parallel is provided with some graduation marks along it, and blade is provided with some scale values at interval of the graduation mark of identical radical；Blade side is provided with a groove being rectangle setting, is embedded with a dip stick in groove, and one end of dip stick and the bottom of groove are hinged.
Further, blade is provided with the one side of graduation mark and is provided with some adjustment patterns not of uniform size relative to the opposite side of graduation mark, adjusts the pattern axial ascending setting along blade.
Further, the both sides of groove are provided with some draw-in grooves, and the both sides of dip stick are provided with the fin matched with draw-in groove.
Further, blade is provided with clamp relative to the another side being provided with dip stick.
Further, the cross section of clamp is L-shape.
Compared with prior art; what this utility model provided myopia prevention book limit ruler is in use; first; blade is laid on books, then, dip stick is opened; during reading, the distance of eye distance books is larger than the height of dip stick; the utility model has the advantage of: be convenient for people to the optimum distance determining between books when reading by dip stick, it is thus possible to eyes to be played the effect of protection, it is to avoid hypometropia.
Accompanying drawing explanation
Fig. 1 is the view of the myopia prevention book limit ruler provided in embodiment of the present utility model；
Fig. 2 is the right view of the myopia prevention book limit ruler that embodiment of the present utility model provides.
In figure, 1, blade；11, graduation mark；12, scale value；2, groove；3, dip stick；4, pattern is adjusted；5, clamp.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of this utility model protection.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
As shown in Figure 1, it is that the myopia prevention book limit ruler that the present embodiment provides includes: blade 1, the tabular that blade 1 is rectangle, the side of blade 1 axially equidistantly parallel is provided with some graduation marks 11 along it, and blade 1 is provided with some scale values 12 at interval of the graduation mark 11 of identical radical；Blade 1 side is provided with a groove 2 being rectangle setting, and the bottom being embedded with a dip stick 3, one end of dip stick 3 and groove 2 in groove 2 is hinged.
The myopia prevention book limit ruler that the present embodiment provides makes in measurement, the size of article is determined either directly through graduation mark 11 and scale value 12, when to read, first, blade 1 is laid on books, then, dip stick 3 is opened, during reading, the distance of eye distance books is larger than the height of dip stick 3, thus can quickly determine the optimum distance of reading.
As shown in Figure 1, it it is the view of the myopia prevention book limit ruler provided in embodiment of the present utility model, blade 1 is provided with the one side of graduation mark 11 and is provided with some adjustment patterns 4 not of uniform size relative to the opposite side of graduation mark 11, adjust the pattern 4 axial ascending setting along blade 1, after determining the eyes distance with books, the distance of eyes and books can be suitably regulated by observing adjustment pattern 4, it is thus possible to protect eyes better, the present embodiment is as preferred embodiment: when eyes cannot see the hypertelorism then proving eyes and books when adjusting pattern 4 that volume is minimum clearly, when the maximum adjustment pattern 4 of volume can be seen clearly, then prove the hypotelorism between eyes and books, simultaneously, adjusting pattern 4 can be numeral, pattern, and word.
The both sides of groove 2 are provided with some draw-in groove (not shown)s, the both sides of dip stick 3 are provided with the fin (not shown) matched with draw-in groove, dip stick 3 can be made to be stuck in groove 2 by the cooperation of draw-in groove and fin, it is to avoid dip stick 3 is also opened and caused the inconvenience of use when not measuring the distance of eyes and books.
As in figure 2 it is shown, be the right view of myopia prevention book limit ruler that provides of embodiment of the present utility model, blade 1 is provided with clamp 5 relative to the another side being provided with dip stick 3, and the cross section of clamp 5 is L-shape.So can ruler body 1 be fixed on books by clamp 5, be convenient for measuring chi 3 and measure, and, blade 1 can be made to play the effect of bookmark.
These are only this utility model preferred embodiment; not thereby embodiment of the present utility model and protection domain are limited; to those skilled in the art; the equivalent replacement done by all utilization this utility model description and diagramatic content and the obtained scheme of apparent change should be can appreciate that, all should be included in protection domain of the present utility model.
Claims (5)
1. a myopia prevention book limit ruler, it is characterized in that, including: blade, the tabular that described blade is rectangle, the side of described blade axially equidistantly parallel is provided with some graduation marks along it, and on described blade, the described graduation mark at interval of identical radical is provided with some scale values；
Described blade side is provided with a groove being rectangle setting, and the bottom being embedded with a dip stick, one end of described dip stick and described groove in described groove is hinged.
2. myopia prevention book limit according to claim 1 ruler, it is characterized in that, described blade is provided with the one side of described graduation mark and is provided with some adjustment patterns not of uniform size relative to the opposite side of described graduation mark, and described adjustment pattern is along the axial ascending setting of described blade.
3. myopia prevention book limit according to claim 1 ruler, it is characterised in that the both sides of described groove are provided with some draw-in grooves, and the both sides of described dip stick are provided with the fin matched with described draw-in groove.
4. myopia prevention book limit according to claim 1 ruler, it is characterised in that described blade is provided with clamp relative to the another side being provided with dip stick.
5. myopia prevention book limit according to claim 4 ruler, it is characterised in that the cross section of described clamp is L-shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520953791.XU CN205344243U (en) | 2015-11-25 | 2015-11-25 | Myopia prevention book limit ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520953791.XU CN205344243U (en) | 2015-11-25 | 2015-11-25 | Myopia prevention book limit ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205344243U true CN205344243U (en) | 2016-06-29 |
Family
ID=56167576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520953791.XU Expired - Fee Related CN205344243U (en) | 2015-11-25 | 2015-11-25 | Myopia prevention book limit ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205344243U (en) |
-
2015
- 2015-11-25 CN CN201520953791.XU patent/CN205344243U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205468121U (en) | Measure accurate ruler | |
| CN205344243U (en) | Myopia prevention book limit ruler | |
| CN211308060U (en) | Folding multifunctional ruler | |
| CN206544412U (en) | A kind of circular ruler of Fast Drawing | |
| CN201587239U (en) | Compass and caliper with ruler | |
| CN203611603U (en) | Mathematic drawing and measuring multipurpose ruler | |
| CN202304652U (en) | Markable steel tape | |
| CN202439433U (en) | Teaching compass | |
| CN206154974U (en) | Portable multi -functional chi | |
| CN205311174U (en) | Goniometer | |
| CN203920137U (en) | Can draw round ruler | |
| CN210077666U (en) | Accurate dipperstick of nose plastic | |
| CN203185935U (en) | Ruler with circle drawing function | |
| CN203864268U (en) | Novel multifunctional compass | |
| CN201143837Y (en) | Ruler-compass pen | |
| CN104875529A (en) | Circle drawing tool | |
| CN205112764U (en) | Compasses | |
| CN205033805U (en) | Ruler for math graphing | |
| CN204863198U (en) | Two -point discrimination feel caliber | |
| CN215751627U (en) | Ruler suitable for high school student uses | |
| CN201158256Y (en) | Multifunctional ruler | |
| CN209634128U (en) | Ruler | |
| CN201907305U (en) | Pen with length marks | |
| CN203093462U (en) | Pen with straight ruler | |
| CN202573453U (en) | Drawing pencil |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20161125 |