CN203995341U - A kind of Multifunctional straightedge for mathematical education - Google Patents
A kind of Multifunctional straightedge for mathematical education Download PDFInfo
- Publication number
- CN203995341U CN203995341U CN201420491846.5U CN201420491846U CN203995341U CN 203995341 U CN203995341 U CN 203995341U CN 201420491846 U CN201420491846 U CN 201420491846U CN 203995341 U CN203995341 U CN 203995341U
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- dwang
- groove
- veneer
- structure embedded
- fixed
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Abstract
A kind of Multifunctional straightedge for mathematical education.Main purpose is to provide a kind of multiple functional, convenient and practical teaching gauge for mathematics teacher.It is characterized in that: the two ends up and down of forward and backward veneer have the rectangle embeded slot caving inward, the every pair of rectangle embeded slot that is positioned at forward and backward veneer upper/lower terminal is closely being pressed and is being formed respectively that angle is delineated structure embedded groove and circular arc is delineated structure embedded groove afterwards; The first turning cylinder is fixed by central authorities in angle is delineated structure embedded groove, and the stiff end of the first dwang is rotatably connected on the first turning cylinder, and the mobile terminal of the first dwang is positioned at angle and delineates structure embedded groove; On front veneer, the position of corresponding the first dwang mobile terminal has the first dial-out groove, first transfers to bottom land end to be fixed with the first back-moving spring and a T shape plectrum, T shape plectrum level is positioned at the first dial-out groove, and the mobile terminal of the first dwang is positioned at the top of T shape plectrum; On front veneer, there are the some gauge points corresponding with different angles.
Description
Technical field
The utility model relates to a kind of apparatus being applied in mathematical education field.
Background technology
At present be mostly a simple plane meter for the ruler of mathematical education, on chi, be carved with scale.When teacher uses such ruler to draw straight line on blackboard, be very easy at one end slide.In addition,, because this ruler does not possess the function that can draw various angles and the function that draws circular arc, teacher also needs to carry in addition cyclograph and protractor, very inconvenient.
Summary of the invention
In order to solve the technical problem of mentioning in background technology, the utility model provides a kind of Multifunctional straightedge for mathematical education, after this kind of ruler is pressed against on blackboard, can not slide again, can also draw various angles and circular arc, there is stronger practicality simultaneously.
The technical solution of the utility model is: this kind is for the Multifunctional straightedge of mathematical education, by forming blade after forward and backward veneer clamping, on blade with conventional scale, its unique distinction is: the upper/lower terminal of forward and backward veneer has the rectangle embeded slot caving inward, and the every pair of rectangle embeded slot that is positioned at described forward and backward veneer upper/lower terminal is closely being pressed and formed respectively that angle is delineated structure embedded groove and circular arc is delineated structure embedded groove afterwards; Central authorities in angle is delineated structure embedded groove are fixed with the first turning cylinder, and the stiff end of the first dwang is rotatably connected on the first turning cylinder, and the mobile terminal of the first dwang is positioned at angle and delineates structure embedded groove; On front veneer, the position of corresponding the first dwang mobile terminal has one first and transfers to groove, first transfers to the bottom in groove to be fixed with the first back-moving spring and a T shape plectrum, T shape plectrum level is positioned at the first dial-out groove, and the mobile terminal of the first dwang is positioned at the top of T shape plectrum; On front veneer, there are the some gauge points corresponding with different angles.
Central authorities in circular arc is delineated structure embedded groove are fixed with the second turning cylinder, and the stiff end of the second dwang is rotatably connected on the second turning cylinder, and the mobile terminal of the second dwang is positioned at circular arc and delineates structure embedded groove; On front veneer, the position of corresponding the second dwang mobile terminal has one second and transfers to groove, and second transfers to the bottom in groove to be fixed with the second back-moving spring and the 2nd T shape plectrum; On the second dwang, be distributed with some chalk jacks that insert chalk.
The utlity model has following beneficial effect: this kind of Multifunctional straightedge, except having general ruler functions, also has the function that can draw fast the circular arc of different angles and different radii, also has the characteristic that can prevent that ruler from sliding in the time of setting-out simultaneously.In addition, the various parameters that the figure that teacher need to can also be drawn on blackboard has write on ruler surface, thereby make teacher repeatedly to bow and to see teaching notes again, have improved picture efficiency when teacher carries out traditional instruction.
Brief description of the drawings:
Fig. 1 is that the utility model is in overlooking the planar structure schematic diagram under state.
Fig. 2 is the planar structure schematic diagram after the first dwang described in the utility model and the second dwang are all opened.
Fig. 3 is the structural representation showing after the tight pressing of rectangle embeded slot of forward and backward veneer described in the utility model.
Fig. 4 is the structural representation of U-shaped rubber cushion described in the utility model.
Fig. 5 is the structural representation of palm fixed cover described in the utility model.
1-sliding tray in figure, 2-regulates jackscrew, and 3-points jack, 4-peg board, 5-the first turning cylinder, 6-gauge point, 7-the first dwang, 8-first transfers to groove, and 9-angle is delineated structure embedded groove, 10-T shape plectrum, 11-the first back-moving spring, 12-blade, 13-writes with blank, 14-circular arc is delineated structure embedded groove, and 15-second transfers to groove, 16-the second dwang, 17-chalk jack, 18-the second turning cylinder, 19-thumbhole, 20-palm fixed cover, 21-U-shaped rubber cushion, veneer before 22-, veneer after 23-, the miniature sucker of 24-.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, this kind be for the Multifunctional straightedge of mathematical education, by forming blade 12 after forward and backward veneer clamping, on blade with conventional scale.Its unique distinction is: the upper/lower terminal of forward and backward veneer has the rectangle embeded slot caving inward, and the every pair of rectangle embeded slot that is positioned at described forward and backward veneer upper/lower terminal is closely being pressed and formed respectively that angle is delineated structure embedded groove 9 and circular arc is delineated structure embedded groove 14 afterwards.
The stiff end that central authorities in angle is delineated structure embedded groove 9 are fixed with the first turning cylinder 5, the first dwangs 7 is rotatably connected on the first turning cylinder 5, and the mobile terminal of the first dwang 7 is positioned at angle and delineates structure embedded groove 9; On front veneer 22, the position of corresponding the first dwang 7 mobile terminals has one first and transfers to groove 8, first transfers to the bottom in groove 8 to be fixed with the first back-moving spring 11 and a T shape plectrum 10, the mobile terminal that the one T shape plectrum 10 levels are positioned at the first dial-out groove 8, the first dwangs 7 is positioned at the top of T shape plectrum 10; On front veneer 22, there are the some gauge points 6 corresponding with different angles.Fig. 2 is the planar structure schematic diagram after the first dwang and the second dwang are all opened.Fig. 3 is the structural representation showing after the tight pressing of rectangle embeded slot of forward and backward veneer.The rule that gauge point 6 can exist according to angle, is labeled as 15 degree, 30 degree, 45 degree, 60 ..., like this, as long as gauge point place corresponding to the first dwang forward to, just can draw fast the angle needing.The effect of the one T shape plectrum is the first dwang to transfer to from groove, and after transfering to, under the effect of back-moving spring, plectrum can automatically reset.
In order to realize the function of delineating fast circular arc, central authorities in circular arc is delineated structure embedded groove 14 are fixed with the second turning cylinder 18, the stiff end of the second dwang 16 is rotatably connected on the second turning cylinder 18, and the mobile terminal of the second dwang 16 is positioned at circular arc and delineates structure embedded groove 14; The bottom that the position of corresponding the second dwang 16 mobile terminals has in one second dial-out groove, 15, the second dial-out grooves 15 on front veneer 22 is fixed with the second back-moving spring and the 2nd T shape plectrum; On the second dwang 16, be distributed with some chalk jacks 17 that insert chalk.In this groove, the effect that the 2nd T shape plectrum plays is identical with a T shape plectrum.Teacher can draw the hole of the radius selection chalk insertion of circular arc as required, and rotation the second dwang can draw circular arc.
On above scheme basis, can further optimize:
Prioritization scheme 1: be fixed with U-shaped rubber cushion 21 at the two ends of blade 12, there is the miniature sucker 24 of some colloids the bottom side of U-shaped rubber cushion 21.Like this, will avoid ruler to slide on blackboard.
Prioritization scheme 2: have pair of sliding groove 1 on front veneer 22, on sliding tray 1, by regulating jackscrew 2 to be fixed with a peg board 4 with finger jack 3; Below peg board 4, be fixed with a palm fixed cover 20, the right-hand member of palm fixed cover 20 has thumbhole 19.Fig. 4 is the structural representation of described U-shaped rubber cushion, and Fig. 5 is the structural representation of described palm fixed cover.Teacher, just can be on the blade that is pressed in one end firm palm in the time drawing like this, avoids blade to slide or displacement.
Prioritization scheme 3: fix writing with blank 13 of plastics on front veneer 22.Like this, the various parameters that teacher can have the figure drawing on blackboard write on ruler surface, thereby make teacher repeatedly to bow and to see teaching notes again, have improved picture efficiency when teacher carries out traditional instruction.
Claims (4)
1. the Multifunctional straightedge for mathematical education, by forward and backward veneer (22,23) after clamping, form blade (12), it is characterized in that: forward and backward veneer (22,23) upper/lower terminal has the rectangle embeded slot caving inward, and the every pair of rectangle embeded slot that is positioned at described forward and backward veneer upper/lower terminal is closely being pressed and formed respectively that angle is delineated structure embedded groove (9) and circular arc is delineated structure embedded groove (14) afterwards;
Central authorities in angle is delineated structure embedded groove (9) are fixed with the first turning cylinder (5), it is upper that the stiff end of the first dwang (7) is rotatably connected on the first turning cylinder (5), and the mobile terminal of the first dwang (7) is positioned at angle and delineates structure embedded groove (9); Have one first in the position of upper corresponding the first dwang (7) of front veneer (22) mobile terminal and transfer to groove (8), first transfers to the bottom in groove (8) to be fixed with the first back-moving spring (11) and a T shape plectrum (10), the one T shape plectrum (10) level is positioned at the first dial-out groove (8), and the mobile terminal of the first dwang (7) is positioned at the top of T shape plectrum (10); On front veneer (22), there are the some gauge points (6) corresponding with different angles;
Central authorities in circular arc is delineated structure embedded groove (14) are fixed with the second turning cylinder (18), it is upper that the stiff end of the second dwang (16) is rotatably connected on the second turning cylinder (18), and the mobile terminal of the second dwang (16) is positioned at circular arc and delineates structure embedded groove (14); Have one second in the position of upper corresponding the second dwang (16) of front veneer (22) mobile terminal and transfer to groove (15), second transfers to the bottom in groove (15) to be fixed with the second back-moving spring and the 2nd T shape plectrum; On the second dwang (16), be distributed with some chalk jacks (17) that insert chalk.
2. a kind of Multifunctional straightedge for mathematical education according to claim 1, is characterized in that: the two ends of blade (12) are fixed with U-shaped rubber cushion (21), there is the miniature sucker (24) of some colloids the bottom side of U-shaped rubber cushion (21).
3. a kind of Multifunctional straightedge for mathematical education according to claim 2, it is characterized in that: on front veneer (22), have pair of sliding groove (1), upper at sliding tray (1), by regulating jackscrew (2) to be fixed with a peg board (4) with finger jack (3); Be fixed with a palm fixed cover (20) in the below of peg board (4), the right-hand member of palm fixed cover (20) has thumbhole (19).
4. a kind of Multifunctional straightedge for mathematical education according to claim 3, is characterized in that: on front veneer (22), fix writing with blank (13) of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491846.5U CN203995341U (en) | 2014-08-29 | 2014-08-29 | A kind of Multifunctional straightedge for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491846.5U CN203995341U (en) | 2014-08-29 | 2014-08-29 | A kind of Multifunctional straightedge for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203995341U true CN203995341U (en) | 2014-12-10 |
Family
ID=52035396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420491846.5U Expired - Fee Related CN203995341U (en) | 2014-08-29 | 2014-08-29 | A kind of Multifunctional straightedge for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203995341U (en) |
-
2014
- 2014-08-29 CN CN201420491846.5U patent/CN203995341U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |