CN103879200A - Class drawing board tool - Google Patents
Class drawing board tool Download PDFInfo
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- CN103879200A CN103879200A CN201410108534.6A CN201410108534A CN103879200A CN 103879200 A CN103879200 A CN 103879200A CN 201410108534 A CN201410108534 A CN 201410108534A CN 103879200 A CN103879200 A CN 103879200A
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- briquetting
- boundary line
- chart board
- board
- square
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Abstract
The invention relates to a class drawing board tool. By the class drawing board tool, a drawing can be placed at a proper position rapidly and accurately and fixed to a drawing board rapidly, a drawing frame can be drawn rapidly and accurately, and the class drawing board tool is small in size and suitable for being used on a class. According to the technical scheme, the front face of the drawing board is provided with a border line of an A3 drawing of the national standard and a border line of an A4 drawing of the national standard, and the front face of the drawing board is further provided with locating pressing blocks embedded with pressing block magnets, eight drawing board magnets corresponding to the pressing block magnets in position are embedded in the back face of the drawing board, drawing board size marks are arranged on the periphery of the drawing board, the zero graduation of the drawing board size mark at the upper side and the zero graduation of the drawing board size mark at the left side are arranged in the middle, the zero graduation is arranged in the middle of the surface of a ruler body, the drawing board only meets the placement requirement of the A3 drawing and the A4 drawing according to the demands of a drawing class, the ruler body and a sliding board of a T-square are connected into a whole, and the sliding board is perpendicular to the surface, where the size marks are set, of the T-square. The class drawing board tool is suitable for being used on a drawing class of not only a university but also a middle school.
Description
Technical field
The present invention relates to a kind of drafting instrument, specifically a kind of classroom draughting board tool.
Background technology
In the time of the drawing course study of colleges and universities, chart board and T-square are indispensable drafting instruments, the chart board using mostly now is ganoid hollow plank, not yielding, comparatively light, but when drawing, the location of drawing is inconvenience comparatively, common operating process is the coincidence of first being alignd with the side of chart board in the side of the sliding plate of T-square, make the chi plate of T-square in horizontal level state, again drawing is placed on and allows the top of drawing or below with the chi plate coincidence of T-square or align below chi plate, make drawing also in horizontal level state, with adhesive tape, drawing is pasted and fixed on chart board again, look into again national standard, according to the size of GB regulation, measure, draw out picture frame, such process is not only loaded down with trivial details time-consuming, and poor quality, if students wants this process to carry out, also need accumulation and summing up experience, T-square is made up of chi plate and sliding plate in addition, chi plate and sliding plate are two parts, sliding plate is adhesively fixed on chi plate one end, in use time, there is bonding phenomenon not firm and that come off to occur, sliding plate is parallel bonding with chi plate, and the large surface of sliding plate does not contact with chart board, and just side contacts with chart board and slippage, so while use, T-square area occupied outside chart board is larger, makes troubles to use.
For drawing is fast and accurately fixed on position suitable in chart board, drawing education or researcher have also been made effort, the patent No. is that 94204186.0 utility model patent has been announced a kind of scheme: in chart board, imbed steel plate strip, the mark line that shows steel plate strip position and width is set on chart board, when work, fix drawing with attraction steel plate strip, can more fast drawing be fixed on chart board, no longer need to paste with adhesive tape, but it still can not be determined drawing at the correct position parallel with chart board or T-square fast, steel plate strip can increase the weight of whole chart board greatly in addition, also increased the cost of product, on drawing, only having four angles that magnet just can be set is fixed, all the other space requirements are used for mobile T-square or set square, magnet can not be set, so imbedding steel plate strip in chart board has wasted material and has increased again the weight of chart board.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of for the problem of above-mentioned existence and drawing can be placed into suitable position fast and accurately and be fixed on fast on chart board, draw fast and accurately picture frame, small volume, be applicable to the classroom draughting board tool that uses on classroom.
The technical solution adopted in the present invention is: classroom draughting board tool, it comprises chart board and T-square, it is characterized in that: the front of described chart board arranges GB A3 drawing boundary line and GB A4 drawing boundary line, the position, 4 angles separately of GB A3 drawing boundary line and GB A4 drawing boundary line arranges respectively GB A3 briquetting boundary line and GB A4 briquetting boundary line, align respectively 4 cover GB A3 briquetting boundary lines or 4 cover GB A4 briquetting boundary lines of 4 location briquettings are placed on the front of chart board, described location briquetting is embedded in briquetting magnet, the chart board back side and briquetting magnet correspondence position embed 8 blocks of chart board magnet, between every two GB A3 briquetting boundary lines of chart board surrounding, chart board size indication is set.
The size of described GB A3 drawing boundary line, GB A4 drawing boundary line equals respectively national standard A3, A4 drawing breadth size, GB A4 drawing boundary line is placed in the middle of GB A3 drawing boundary line, and two minor faces of GB A4 drawing boundary line overlap with Liang Tiaochang limit, GB A3 drawing boundary line.
Described GB A3 briquetting boundary line and GB A4 briquetting boundary line are respectively made up of two markings that mutually intersect vertically, markings perpendicular or parallel GB A3 drawing boundary line or GB A4 drawing boundary line, the distance of left and right between two pairs of GB A3 briquetting boundary lines and the distance between upper and lower two pairs of GB A3 briquetting boundary lines equal respectively the length of national standard picture frame of A3 drawing and wide, and the distance between the distance between GB A4 briquetting boundary line, two pairs of left and right and upper and lower two pairs of GB A4 briquetting boundary lines equals respectively the length of national standard picture frame of A4 drawing and wide.
Described location briquetting includes two vertical and crossing picture frame datum levels mutually, and the intersection of picture frame datum level arranges the breach of taper, picture frame datum level vertical alignment GB A3 briquetting boundary line or GB A4 briquetting boundary line.
In the chart board size indication on the both sides up and down of described chart board, there is the zero graduation of chart board size indication to be on one side arranged on middle, the zero graduation of another side chart board size indication is arranged on left end, in the chart board size indication of the right and left, have the zero graduation of chart board size indication to be on one side arranged on centre, the zero graduation of another side chart board size indication is arranged on lower end.
Chi plate and the sliding plate of described T-square are connected as a single entity, and chi plate surface arranges zero graduation and is placed in T-square size indication middle, that upper and lower side all arranges graduation mark, and sliding plate is perpendicular to the surface at T-square size indication place.
The invention has the beneficial effects as follows: 1, chart board of the present invention front arranges GB A3 drawing boundary line and GB A4 drawing boundary line, can fast and accurately drawing be placed into suitable position.2, the present invention has the location briquetting of embedded briquetting magnet, and the chart board back side and briquetting magnet correspondence position also embed 8 blocks of chart board magnet, fast and accurately drawing are fixed on chart board.3, the position, 4 angles separately of GB A3 drawing boundary line of the present invention and GB A4 drawing boundary line arranges respectively GB A3 briquetting boundary line and GB A4 briquetting boundary line, align respectively 4 cover GB A3 briquetting boundary lines or 4 cover GB A4 briquetting boundary lines of 4 location briquettings are placed on the front of chart board, T-square laminating location briquetting, draws picture frame fast and accurately.4, chart board surrounding of the present invention arranges chart board size indication, and the zero graduation of the chart board size indication on top and the left side is arranged on centre, and chi plate surface arranges zero graduation and is placed in centre, conveniently painted view is placed in the middle of drawing.5, the present invention only allows chart board meet the placement of A3 drawing and A4 drawing according to drawing classroom demand, chi plate and the sliding plate of T-square are connected as a single entity, sliding plate, perpendicular to the surface at T-square size indication place, makes the overall dimensions of chart board and T-square less, carries and deposit more convenient.
Accompanying drawing explanation
Fig. 1 is schematic perspective view of the present invention.
Fig. 2 is the front schematic perspective view of chart board of the present invention.
Fig. 3 is the front schematic perspective view of location of the present invention briquetting.
Fig. 4 is the back side schematic perspective view of chart board of the present invention.
Fig. 5 is the back side schematic perspective view of location of the present invention briquetting.
Fig. 6 is T-square schematic perspective view of the present invention.
The specific embodiment
As Fig. 1, shown in Fig. 2, the present embodiment comprises chart board 1 and T-square 2, it is characterized in that: the front of described chart board 1 arranges GB A3 drawing boundary line 3 and GB A4 drawing boundary line 4, in drawing teaching process, while using chart board 1 and T-square 2 to draw, the drawing using mostly is A4 drawing, there is a small amount of A3 drawing, A2 and larger drawing on classroom, almost use less than, chart board 1 and T-square 2 are student oneself keeping when flat, be placed on bedroom, need to use chart board 1 and T-square 2 time, students is just taken classroom, for students keeping and easy to carry, the chart board miniaturization of the present embodiment, practical, convenient and meet and on students classroom, draw A3 drawing and A4 drawing, can also fast and accurately drawing be put into suitable position, overlap and make the chi plate of T-square in horizontal level state without first being alignd with the side of chart board in the side of the sliding plate of T-square, again drawing is placed on and allows the top of drawing or below with the chi plate coincidence of T-square or align and make drawing also in this complicated processes of horizontal level state below chi plate, but directly four limits of A3 drawing or A4 drawing are overlapped with four limits of GB A3 drawing boundary line 3 or GB A4 drawing boundary line 4, convenient and swift and accurate, the position, 4 angles separately of GB A3 drawing boundary line 3 and GB A4 drawing boundary line 4 arranges respectively GB A3 briquetting boundary line 5 and GB A4 briquetting boundary line 6, after A3 drawing or A4 figure paper registration coincidence GB A3 drawing boundary line 3 or GB A4 drawing boundary line 4 place, location briquetting 7 just fast face be placed on accurately on GB A3 briquetting boundary line 5 or GB A4 briquetting boundary line 6, be unlikely to mislay to cause while drawing and locate briquetting 7 and affect the movement of T-square 2 or set square, impact is drawn, also being unlikely to locate briquetting 7, to push down the area of drawing too little and easily make drawing be moved, dislocation, impact is drawn.
As shown in Figure 3, location briquetting 7 includes two vertical and crossing picture frame datum levels 11 mutually, 4 location briquettings 7, the 5 or 4 cover GB A4 briquetting boundary lines 6,4 cover GB A3 briquetting boundary lines of aliging are respectively placed on the front of chart board 1, now picture frame datum level 11 vertical alignment GB A3 briquetting boundary line 5 or GB A4 briquetting boundary lines 6, in the time drawing picture frame, when the horizontal flat picture frame datum level 11 of T-square 2 or set square alignment laminating two location briquettings 7 above, just can accurately and fast draw a limit above of picture frame, when the horizontal flat picture frame datum level 11 of alignment laminating two location briquettings 7 below, just can draw a limit below picture frame, chart board 1 rotates counterclockwise 90 degree, while allowing equally the horizontal flat picture frame datum level 11 of two location briquettings 7 above of T-square 2 or set square alignment laminating and two location briquettings 7 below, just can accurately and fast draw the two other limit of picture frame, the intersection of picture frame datum level 11 arranges the breach 12 of taper, can guarantee in the time using pencil to draw picture frame, the horizontal line of picture frame and vertical line can form and intersect, can also make in addition to locate and between briquetting 7 and drawing, maintain the large contact area of trying one's best, can not reduce too many contact area because of the setting of breach 12, make drawing be moved in use, misplace.
As shown in Figure 4, Figure 5, described location briquetting 7 is embedded in briquetting magnet 8, chart board 1 back side and briquetting magnet 8 correspondence positions embed 8 blocks of chart board magnet 9, in the time that the present embodiment uses, between briquetting magnet 8 and chart board magnet 9, can form interactional powerful attraction, guarantee fixing to drawing of location briquetting 7, also can make to locate briquetting 7 self holding position and fix, draw out picture frame accurately.
Between every two GB A3 briquetting boundary lines 5 of chart board 1 surrounding, chart board size indication 10 is set, in the time drawing, convenient and measure accurately or definite size, can also utilize at any time the relative chart board size indication 10 in left and right or chart board size indication 10 opposing upper and lower to check easily or confirm whether T-square 2 or set square put horizontal flat or vertically.
GB A3 drawing boundary line 3, the size of GB A4 drawing boundary line 4 equals respectively national standard A3, A4 drawing breadth size, GB A4 drawing boundary line 4 is placed in the middle of GB A3 drawing boundary line 3, two minor faces of GB A4 drawing boundary line 4 overlap with two long limits of GB A3 drawing boundary line 3, the width of A3 drawing equals the length of A4 drawing, the width boundary line that can make less two GB A4 drawing boundary lines 4 is set like this, while using A4 drawing to draw, chart board 1 is rotated counterclockwise to 90 degree, using present top as side or when working edge, the width limit of A4 drawing and chart board size indication 10 distances are very near, can more accurately and easily measure and controlling dimension, draw fast and accurately.
GB A3 briquetting boundary line 5 and GB A4 briquetting boundary line 6 are respectively made up of two markings that mutually intersect vertically, GB A3 briquetting boundary line 5 and GB A4 briquetting boundary line 6 provide location not only can to fast and accurately location briquetting 7, also will provide benchmark for picture frame; The perpendicular or parallel GB A3 drawing of markings boundary line 3 or GB A4 drawing boundary line 4, guarantee the parallel or vertical relation of picture frame and drawing; Distance between distance and upper and lower two pairs of GB A3 briquetting boundary lines 5 that the two pairs of GB A3 briquetting boundary lines, left and right are 5 equals respectively the length of national standard picture frame of A3 drawing and wide, guarantees length and the width of A3 drawing picture frame, has guaranteed the accuracy of A3 drawing picture frame; Distance between distance and upper and lower two pairs of GB A4 briquetting boundary lines 6 that the two pairs of GB A4 briquetting boundary lines, left and right are 6 equals respectively the length of national standard picture frame of A4 drawing and wide, guarantees length and the width of A4 drawing picture frame, has guaranteed the accuracy of A4 drawing picture frame.
In the chart board size indication 10 on the both sides up and down of chart board 1, there is the zero graduation of chart board size indication 10 to be on one side arranged on middle, the zero graduation of another side chart board size indication 10 is arranged on left end, in the chart board size indication 10 of the right and left, there is the zero graduation of chart board size indication 10 to be on one side arranged on middle, the zero graduation of another side chart board size indication 10 is arranged on lower end, chi plate 13 surfaces arrange zero graduation and are placed in middle, in the middle of being placed in, zero graduation can make more easily view that student paints be placed on the centre of drawing, improve drawing quality, in the time drawing the figure that scaling is 2:1, can more conveniently measure accurately size, as draw dimensioning while being the line of 36mm, just can use one end of compasses to be placed on the 36mm place, the left side of zero graduation line, the other end is placed on the 36mm place, the right of zero graduation line, the size that can obtain required 72mm is drawn, convenient, fast, if requirement is got overall dimensions in the time drawing, also can be convenient to use opposite side zero graduation and be arranged on end, chart board size indication 10.
As shown in Figure 6, chi plate 13 and the sliding plate 14 of T-square 2 are connected as a single entity, and make the manufacture of T-square 2 more easy, save cost, have also improved the bonding strength between chi plate 13 and sliding plate 14; The surperficial upper and lower side of chi plate 13 all arranges the T-square size indication 15 of graduation mark, makes T-square 2 upper and lower sides all can be used as working edge, and instant noodles are drawn efficiently; Sliding plate 14 is perpendicular to the surface at T-square size indication 15 places, in the time using the present embodiment, make the left surface of the large surface laminating chart board 1 of sliding plate 14 carry out slippage, reduce the overall dimensions of T-square 2, make the overall dimensions of chart board 1 and T-square 2 less, carry and deposit more convenient.
In the time using A3 drawing to draw, A3 figure paper registration coincidence GB A3 drawing boundary line 3, the briquetting 7 GB A3 briquetting boundary line 5 of aliging in location is pressed on drawing, and briquetting magnet 8 attracts each other with chart board magnet 9, completes the fixing of A3 drawing; In the time using A4 drawing to draw, A3 figure paper registration coincidence GB A4 drawing boundary line 4, the briquetting 7 GB A4 briquetting boundary line 6 of aliging in location is pressed in and on drawing, completes the fixing of A4 drawing; Left surface laminating the sliding plate 14 of T-square 2 with chart board 1, as shown in Figure 1, slippage T-square 2, make chi plate 13 laminating location briquettings 7 can draw out picture frame, recycling chart board size indication 10 and T-square size indication 15 just can facilitate drawing view accurately, and are placed on the middle suitable position of drawing.
The present invention is suitable for colleges and universities' drawing classroom and uses, and the drawing classroom that is also suitable for middle school is used.
Claims (6)
1. a classroom draughting board tool, it comprises chart board (1) and T-square (2), it is characterized in that: the front of described chart board (1) arranges GB A3 drawing boundary line (3) and GB A4 drawing boundary line (4), the position, 4 angles separately of GB A3 drawing boundary line (3) and GB A4 drawing boundary line (4) arranges respectively GB A3 briquetting boundary line (5) and GB A4 briquetting boundary line (6), align respectively 4 cover GB A3 briquetting boundary lines (5) or 4 cover GB A4 briquetting boundary lines (6) of 4 location briquettings (7) are placed on the front of chart board (1), described location briquetting (7) is embedded in briquetting magnet (8), chart board (1) back side and briquetting magnet (8) correspondence position embed 8 blocks of chart board magnet (9), between every two GB A3 briquetting boundary lines (5) of chart board (1) surrounding, chart board size indication (10) is set.
2. according to the draughting board tool of the classroom shown in claim 1, it is characterized in that: the size of described GB A3 drawing boundary line (3), GB A4 drawing boundary line (4) equals respectively national standard A3, A4 drawing breadth size, GB A4 drawing boundary line (4) is placed in the middle of GB A3 drawing boundary line (3), and two minor faces of GB A4 drawing boundary line (4) overlap with long limit, (3) two of GB A3 drawing boundary lines.
3. according to the draughting board tool of the classroom shown in claim 1, it is characterized in that: described GB A3 briquetting boundary line (5) and GB A4 briquetting boundary line (6) are respectively made up of two markings that mutually intersect vertically, the perpendicular or parallel GB A3 drawing of markings boundary line (3) or GB A4 drawing boundary line (4), distance between left and right two pairs of GB A3 briquetting boundary lines (5) and the distance between upper and lower two pairs of GB A3 briquetting boundary lines (5) equal respectively the length of national standard picture frame of A3 drawing and wide, distance between left and right two pairs of GB A4 briquetting boundary lines (6) and the distance between upper and lower two pairs of GB A4 briquetting boundary lines (6) equal respectively the length of national standard picture frame of A4 drawing and wide.
4. according to the draughting board tool of the classroom shown in claim 1, it is characterized in that: described location briquetting (7) includes two vertical and crossing picture frame datum levels (11) mutually, the intersection of picture frame datum level (11) arranges the breach (12) of taper, picture frame datum level (11) vertical alignment GB A3 briquetting boundary line (5) or GB A4 briquetting boundary line (6).
5. according to the draughting board tool of the classroom shown in claim 1, it is characterized in that: in the chart board size indication (10) on the both sides up and down of described chart board (1), there is the zero graduation of chart board size indication (10) to be on one side arranged on middle, the zero graduation of another side chart board size indication (10) is arranged on left end, in the chart board size indication (10) of the right and left, have the zero graduation of chart board size indication (10) to be on one side arranged on centre, the zero graduation of another side chart board size indication (10) is arranged on lower end.
6. according to the draughting board tool of the classroom shown in claim 1, it is characterized in that: the chi plate (13) of described T-square (2) is connected as a single entity with sliding plate (14), chi plate (13) surface arranges zero graduation and is placed in T-square size indication (15) middle, that upper and lower side all arranges graduation mark, and sliding plate (14) is perpendicular to the surface at T-square size indication (15) place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108534.6A CN103879200B (en) | 2014-03-24 | 2014-03-24 | Classroom draughting board tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108534.6A CN103879200B (en) | 2014-03-24 | 2014-03-24 | Classroom draughting board tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103879200A true CN103879200A (en) | 2014-06-25 |
| CN103879200B CN103879200B (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410108534.6A Expired - Fee Related CN103879200B (en) | 2014-03-24 | 2014-03-24 | Classroom draughting board tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN103879200B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442115A (en) * | 2014-12-16 | 2015-03-25 | 济南大学 | Drawing board |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056461A (en) * | 1990-05-14 | 1991-11-27 | 王彩仁 | Magnetic drawing board |
| CN2108630U (en) * | 1990-12-12 | 1992-07-01 | 张瑞生 | Drawing-board with graduation |
| CN2185205Y (en) * | 1994-03-12 | 1994-12-14 | 张留云 | Magnetic drawing board |
| US5845409A (en) * | 1994-06-21 | 1998-12-08 | Kimoto; Masao | Drawing board |
| JP2006231889A (en) * | 2005-02-23 | 2006-09-07 | Masahiro Matsuura | Drafting board fitted with straightedge having paper holding channel |
| CN101863181A (en) * | 2009-04-17 | 2010-10-20 | 冯婉莹 | Multifunction drawing board |
| CN202115194U (en) * | 2011-07-13 | 2012-01-18 | 陈运来 | Drawing board with T-square |
| CN103381726A (en) * | 2013-06-29 | 2013-11-06 | 王建友 | Drafting board |
| CN203792966U (en) * | 2014-03-24 | 2014-08-27 | 浙江水利水电学院 | Drawing board tool for class |
-
2014
- 2014-03-24 CN CN201410108534.6A patent/CN103879200B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056461A (en) * | 1990-05-14 | 1991-11-27 | 王彩仁 | Magnetic drawing board |
| CN2108630U (en) * | 1990-12-12 | 1992-07-01 | 张瑞生 | Drawing-board with graduation |
| CN2185205Y (en) * | 1994-03-12 | 1994-12-14 | 张留云 | Magnetic drawing board |
| US5845409A (en) * | 1994-06-21 | 1998-12-08 | Kimoto; Masao | Drawing board |
| JP2006231889A (en) * | 2005-02-23 | 2006-09-07 | Masahiro Matsuura | Drafting board fitted with straightedge having paper holding channel |
| CN101863181A (en) * | 2009-04-17 | 2010-10-20 | 冯婉莹 | Multifunction drawing board |
| CN202115194U (en) * | 2011-07-13 | 2012-01-18 | 陈运来 | Drawing board with T-square |
| CN103381726A (en) * | 2013-06-29 | 2013-11-06 | 王建友 | Drafting board |
| CN203792966U (en) * | 2014-03-24 | 2014-08-27 | 浙江水利水电学院 | Drawing board tool for class |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442115A (en) * | 2014-12-16 | 2015-03-25 | 济南大学 | Drawing board |
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| Publication number | Publication date |
|---|---|
| CN103879200B (en) | 2016-03-16 |
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