CN202130189U - Teaching tool capable of drawing hyperbolic curves in one step - Google Patents
Teaching tool capable of drawing hyperbolic curves in one step Download PDFInfo
- Publication number
- CN202130189U CN202130189U CN201120226974U CN201120226974U CN202130189U CN 202130189 U CN202130189 U CN 202130189U CN 201120226974 U CN201120226974 U CN 201120226974U CN 201120226974 U CN201120226974 U CN 201120226974U CN 202130189 U CN202130189 U CN 202130189U
- Authority
- CN
- China
- Prior art keywords
- ruler
- gear
- slide plate
- vertical
- sliding plate
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a teaching tool capable of drawing hyperbolic curves in one step, which comprises a straight ruler. The teaching tool is characterized in that a vertical strip-shaped hole is arranged at the middle part of the upper plate surface of the straight ruler; a transverse strip-shaped hole is arranged at the middle part of the side plate surface of the straight ruler; racks are arranged on the left side wall and the right side wall of the straight ruler; a sliding plate is arranged in the transverse strip-shaped hole; gears which are equidistant with a middle line of the upper plate surface of the straight ruler are respectively arranged at the two ends of the sliding plate by fixed shafts; the gears at the two ends of the sliding plate are respectively meshed with the corresponding racks; a pushing handle is inserted into the vertical strip-shaped hole; the upper end of the pushing handle is connected with the middle part of the sliding plate; chalk sleeves vertical to the plate surfaces of the gears are arranged on the radial direction of the gears; and chalk sleeves vertical to the sliding plate are also arranged at the middle part of the bottom plate surface of the sliding plate. The teaching tool capable of drawing the hyperbolic curves in one step can draw the hyperbolic curves and the straight centerlines in one step and greatly improve the efficiency and the drawing quality; moreover, the teaching tool is simple in structure, saves the time and the labor and can quickly and briefly draw the hyperbolic curves.
Description
Technical field
The utility model relates to the hyp mathematical education apparatus that draws, specifically a kind of when the mathematics hyperbola is imparted knowledge to students the employed disposable hyp teaching aid that draws.
Background technology
In middle-school mathematics teaching, hyperbola is difficult picture.At present, when drawing hyperbola, often adopt " looking for a trace method ", perhaps directly on blackboard, draw with hand.The existing deficiency of the hyp method of this picture is: the picture system time is long, and the curve inaccuracy influences efficiency of teaching.
Summary of the invention
The purpose of the utility model is to provide a kind of time saving and energy saving, quick succinct, disposable hyp disposable hyp teaching aid that draws that paint straight line and symmetry of ability.
For reaching above purpose, the technical scheme that the utility model adopted is: this disposable hyp teaching aid that draws comprises ruler; It is characterized in that: the upper face middle part of said ruler is provided with vertical bar hole; The lateral plates middle part of ruler is provided with horizontal bar hole, is equipped with tooth bar on the left and right sidewall of ruler, laterally is being provided with slide plate in the bar hole; The two ends of slide plate are provided with the equidistant gear of upper face center line with ruler through fixed axis respectively; The gear at the two ends of slide plate meshes with corresponding tooth bar respectively, in vertical bar hole, inserts and pushes away handle, and the upper end that pushes away handle is connected with the middle part of slide plate; Upwards be provided with the chalk sleeve of vertical teeth wheel plate face in the footpath of gear, also be provided with the chalk sleeve of vertical slide at the base plate face middle part of slide plate.
The utility model is also implemented through following measure: the chalk sleeve on the described gear radially is provided with 2-3, is used to regulate hyp symmetry distance.
The diameter of the gear at described slide plate two ends is identical with the number of teeth.
This disposable hyp teaching aid that draws can be made different specifications, through the change of slide plate length and the change of gear diameter, can realize multiple hyp picture system.
The beneficial effect of the utility model is: with in middle-school mathematics teaching, draw hyp method at present and compare; Can once draw hyperbola and central line; The quality that can significantly raise the efficiency and chart, and simple in structure, time saving and energy saving, draw succinct fast.
Description of drawings
Fig. 1 is the structure schematic top plan view of the utility model.
Fig. 2 is the structure elevational schematic view of the utility model.
Fig. 3 is the section enlarged diagram of the utility model ruler.
Among the figure: 1, ruler; 2, vertical bar hole; 3 horizontal bar holes; 4, tooth bar; 5, slide plate; 6, gear; 7 push away handle; 8,9, chalk sleeve; 10,11 chalks; 12, fixed axis.
The specific embodiment
Make the utility model with reference to Fig. 1, Fig. 2, Fig. 3.This disposable hyp teaching aid that draws comprises ruler 1, it is characterized in that: the upper face middle part of said ruler 1 is provided with vertical bar hole 2; The lateral plates middle part of ruler 1 is provided with horizontal bar hole 3, is equipped with tooth bar 4 on the left and right sidewall of ruler 1, laterally is being provided with slide plate 5 in the bar hole 3; The two ends of slide plate 5 are provided with and the equidistant gear 6 of the upper face center line of ruler 1 through fixed axis 12 respectively, and the gear 6 at the two ends of slide plate 5 meshes with corresponding tooth bar 4 respectively, in vertical bar hole 2, insert and push away handle 7; The upper end that pushes away handle 7 is connected with the middle part of slide plate 5; Upwards be provided with the chalk sleeve 8 of vertical gear 6 plate faces at the warp of gear 6, also be provided with the chalk sleeve 9 of vertical slide 5 at the base plate face middle part of slide plate 5, when using the utility model to draw hyperbola; Ruler 1 is pressed on the blackboard; Promotion pushes away handle 7, and this moment, slide plate 5 also was pushed, and the gear 6 at slide plate 5 two ends is struck under the effect of tooth bar 4; Chalk 10 in the chalk sleeve 8 on gear 6 hyperbola that can draw, the chalks 11 on the slide plate 5 in the chalk sleeve 9 central line of can drawing.
As the improvement of the utility model, the chalk sleeve 8 on the described gear 6 radially is provided with 2-3, is used to regulate hyp symmetry distance.
The diameter of the gear 6 at described slide plate 5 two ends is identical with the number of teeth.
This disposable hyp teaching aid that draws can be made different specifications, through the change of slide plate 5 length and the change of gear 6 diameters, can realize multiple hyp picture system.
Claims (2)
1. the disposable hyp teaching aid that draws; Comprise ruler (1); It is characterized in that: the upper face middle part of said ruler (1) is provided with vertical bar hole (2); The lateral plates middle part of ruler (1) is provided with horizontal bar hole (3), is equipped with tooth bar (4) on the left and right sidewall of ruler (1), laterally is being provided with slide plate (5) in the bar hole (3); The two ends of slide plate (5) are provided with the equidistant gear of upper face center line (6) with ruler (1) through fixed axis (12) respectively; The gear (6) at the two ends of slide plate (5) meshes with corresponding tooth bar (4) respectively, in vertical bar hole (2), inserts and pushes away handle (7), and the upper end that pushes away handle (7) is connected with the middle part of slide plate (5); Upwards be provided with the chalk sleeve (8) of vertical gear (6) plate face in the footpath of gear (6), also be provided with the chalk sleeve (9) of vertical slide (5) at the base plate face middle part of slide plate (5).
2. the disposable hyp teaching aid that draws according to claim 1 is characterized in that the chalk sleeve (8) on the described gear (6) radially is provided with 2-3; The diameter of the gear (6) at described slide plate (5) two ends is identical with the number of teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226974U CN202130189U (en) | 2011-06-30 | 2011-06-30 | Teaching tool capable of drawing hyperbolic curves in one step |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226974U CN202130189U (en) | 2011-06-30 | 2011-06-30 | Teaching tool capable of drawing hyperbolic curves in one step |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202130189U true CN202130189U (en) | 2012-02-01 |
Family
ID=45518971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120226974U Expired - Fee Related CN202130189U (en) | 2011-06-30 | 2011-06-30 | Teaching tool capable of drawing hyperbolic curves in one step |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202130189U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669884A (en) * | 2015-02-26 | 2015-06-03 | 陕西科技大学 | Ruler for drawing symmetric figure |
-
2011
- 2011-06-30 CN CN201120226974U patent/CN202130189U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669884A (en) * | 2015-02-26 | 2015-06-03 | 陕西科技大学 | Ruler for drawing symmetric figure |
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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: 20120201 Termination date: 20120630 |