CN210211829U - Arc drawing device for mathematical education - Google Patents
Arc drawing device for mathematical education Download PDFInfo
- Publication number
- CN210211829U CN210211829U CN201920778728.5U CN201920778728U CN210211829U CN 210211829 U CN210211829 U CN 210211829U CN 201920778728 U CN201920778728 U CN 201920778728U CN 210211829 U CN210211829 U CN 210211829U
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- ruler
- groove
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- fixed
- side wall
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Abstract
The utility model discloses an arc line drawing device for mathematical education, including first fixed ruler and with first fixed ruler sliding connection's flat board, be equipped with in the second recess and adjust the radial first adjusting device of pitch arc, the third recess in-connection of telling has the fixing device in the fixed centre of a circle, install the second adjusting device that can adjust oval major axis position on the first fixed ruler. The utility model discloses the case is through first movable ruler and first recess sliding connection, the second sliding tray has been seted up to first movable ruler the latter half, first recess lateral wall threaded connection's spliced pole runs through the second spout, can adjust the length that oval major axis was confirmed to the distance between movable rod and the spreader, second movable ruler and second recess sliding connection, set up threaded pinhole on the second movable ruler, pinhole female connection horizontal pole, confirm required circle radius and oval semi-axis length through adjusting the distance between chalk draw-in groove on the second movable ruler and the fixed needle.
Description
Technical Field
The utility model relates to a mathematical education field especially relates to pitch arc drawing device for mathematical education.
Background
Mathematics is a subject of researching concepts such as quantity, structure, change, space and information, and belongs to a form science from a certain angle.
At present, the arc-shaped device drawn by mathematical education is mostly separated, for example, drawing a circle and an ellipse, and switching back and forth when drawing is troublesome, and when carrying, the arc-shaped device is troublesome, and when drawing an ellipse, the arc-shaped device is often inaccurate in drawing, and the accuracy is insufficient, so that the teaching quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an arc drawing device for mathematical education.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an arc line drawing device for mathematical education comprises a first fixed ruler and a flat plate connected with the first fixed ruler in a sliding way, wherein a first groove is formed in the first fixed ruler, a first movable ruler is connected in the first groove in a sliding way, a first sliding groove is formed in the middle of the first movable ruler, a second sliding groove is formed at the lower end of the first movable ruler, a connecting column is connected with the side wall of the first groove in a threaded way and penetrates through the second sliding groove, a through hole is formed in the side wall of the flat plate, a movable rod is connected in the through hole in a sliding way and penetrates through the side wall of the first groove and the first sliding groove, a first knob is fixedly connected with one end of the movable rod, a third sliding groove is formed in the first fixed ruler, a connecting rod is connected with the side wall of the flat plate in a threaded way and penetrates through the third sliding groove, and a second fixed ruler, the connecting rod one end fixedly connected with second knob, the second recess has been seted up to the second solid fixed ruler lateral wall, the third recess has been seted up to the dull and stereotyped lateral wall, be equipped with the first adjusting device that can adjust the pitch arc radius in the second recess, the third recess in-connection of telling has the fixing device of fixed centre of a circle, install the second adjusting device that can adjust oval major axis position on the first solid fixed ruler.
Preferably, first adjusting device includes sliding connection's second expansion ruler in the second recess, a plurality of screw thread pinholes have been seted up to the equipartition on the second expansion ruler, second expansion ruler lateral wall threaded connection have with pinhole matched with horizontal pole, horizontal pole one end fixedly connected with third knob, the one end fixedly connected with chalk draw-in groove of third knob is kept away from to the horizontal pole, the horizontal pole runs through second expansion ruler lateral wall and can freely remove, the fourth sliding tray has been seted up on the second expansion ruler, second recess lateral wall threaded connection has the spliced pole, the spliced pole runs through the fourth sliding tray.
Preferably, fixing device includes the diaphragm of sliding connection in the third recess, the diaphragm lateral wall passes through spring and third recess lateral wall elastic connection, one side fixedly connected with fixed needle that the spring was kept away from to the diaphragm, connecting rod and third recess intercommunication.
Preferably, the second adjusting device comprises a transverse column fixedly connected to the first fixed ruler, the transverse column penetrates through the first fixed ruler and the flat plate, a tape measure is fixedly connected to one end of the transverse column, a tape measure switch is arranged on the tape measure, a nylon rope is wound on the tape measure, and the nylon rope is wound on the movable rod.
Preferably, the movable rod and the end of the transverse column, which are positioned on the flat plate, are both connected with detachable suckers, and the cap is screwed by fixedly connecting one end of the connecting column.
Preferably, a rubber pad is attached to the first fixed ruler and the flat plate, and anti-skid grains are arranged on the rubber pad.
The utility model discloses following beneficial effect has:
1. the first movable ruler is slidably connected with the first groove, a second sliding groove is formed in the lower half portion of the first movable ruler, a connecting column in threaded connection with the side wall of the first groove penetrates through the second sliding groove, a first sliding groove is formed in the middle of the first movable ruler, a movable rod in sliding connection with a through hole formed in the side wall of the flat plate penetrates through the side wall of the first groove and the first sliding groove, a tape measure is connected to the side wall of the first fixed ruler through a cross column, and the length of the long axis of the ellipse can be determined by adjusting the distance between the movable rod and the cross column;
2. through second expansion ruler and second recess sliding connection, set up threaded pinhole on the second expansion ruler, pinhole internal thread connection horizontal pole, chalk draw-in groove is connected to horizontal pole one end, and the fourth sliding tray of setting up on the second expansion ruler passes through spliced pole and second recess lateral wall threaded connection, confirms required radius of circle and oval semi-axis length through adjusting the distance between chalk draw-in groove on the second expansion ruler and the stationary needle.
Drawings
Fig. 1 is a schematic structural view of an arc drawing device for mathematical education according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic side view of an arc drawing device for mathematical education according to the present invention;
fig. 4 is a schematic top view of an adjusting device in the arc drawing device for mathematical education according to the present invention;
fig. 5 is a schematic structural diagram of a drawing device in the arc drawing device for mathematical education provided by the utility model.
In the figure: the chalk comprises a first fixed ruler 1, a first sliding groove 2, a first groove 3, a third sliding groove 4, a second knob 5, a second fixed ruler 6, a tape switch 7, a nylon rope 8, a first movable ruler 9, a second sliding groove 10, a first knob 11, a flat plate 12, a fourth sliding groove 13, a second groove 14, a third knob 15, a pin hole 16, a second movable ruler 17, a fixed pin 18, a third groove 19, a chalk clamping groove 20 and a cross column 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-5, an arc drawing device for mathematical education comprises a first fixed ruler 1 and a flat plate 12 slidably connected with the first fixed ruler 1, wherein the first fixed ruler 1 is provided with a first groove 3, the first groove 3 is slidably connected with a first movable ruler 9, the middle part of the first movable ruler 9 is provided with a first sliding groove 2, the lower end of the first movable ruler 9 is provided with a second sliding groove 10, the side wall of the first groove 3 is in threaded connection with a connecting column, the connecting column penetrates through the second sliding groove 10, the side wall of the flat plate 12 is provided with a through hole, the through hole is slidably connected with a movable rod, the movable rod penetrates through the side wall of the first groove 3 and the first sliding groove 2, one end of the movable rod is fixedly connected with a first knob 11, the first fixed ruler 1 is provided with a third sliding groove 4, the side wall of the flat plate 12 is provided with a plurality of threaded holes, the side wall, the connecting rod runs through a third sliding groove 4, a second fixed ruler 6 is sleeved on the connecting rod, one end of the connecting rod is fixedly connected with a second knob 5, the side wall of the second fixed ruler 6 is provided with a second groove 14, the side wall of the flat plate 12 is provided with a third groove 19, a first adjusting device capable of adjusting the radius of an arc line is arranged in the second groove 14, the first adjusting device comprises a second movable ruler 17 which is in sliding connection with the second groove 14, a plurality of threaded pin holes 16 are uniformly distributed on the second movable ruler 17, the side wall of the second movable ruler 17 is in threaded connection with a cross rod which is matched with the pin holes 16, one end of the cross rod is fixedly connected with a third knob 15, one end of the cross rod, far away from the third knob 15, is fixedly connected with a chalk clamping groove 20, the diameter of the chalk clamping groove 20 is smaller than that of the cross rod, the cross rod runs through the side wall of the second movable ruler, the connection column penetrates through the fourth sliding groove 13.
The fixing device for fixing the circle center is connected in the third groove 19 and comprises a transverse plate which is connected in the third groove 19 in a sliding mode, the side wall of the transverse plate is elastically connected with the side wall of the third groove 19 through a spring, one side, far away from the spring, of the transverse plate is fixedly connected with a fixing needle 18, and the connecting rod is communicated with the third groove 19.
Install the second adjusting device that can adjust oval long axis position on the first fixed ruler 1, second adjusting device includes fixed connection's spreader 21 on the first fixed ruler 1, and spreader 21 runs through first fixed ruler 1 and dull and stereotyped 12, and 21 one end fixedly connected with tape measures of spreader are equipped with tape measure switch 7 on the tape measure, and the winding has nylon rope 8 on the tape measure, and nylon rope 8 twines with the movable rod.
In the utility model, when a circle needs to be drawn, the second knob 5 is screwed down, the second fixed ruler 6, the first fixed ruler 1 and the flat plate 12 are fixed, the fixed needle 18 is pushed out of the third groove 19, the second movable ruler 17 is in sliding connection with the second groove 14 formed on the second fixed ruler 6, the second movable ruler 17 is provided with a pin hole 16 with threads, the pin hole 16 is internally connected with a cross rod, one end of the cross rod is connected with the chalk clamping groove 20, the other end of the cross rod is connected with the third knob 15, the fourth sliding groove 13 formed on the second movable ruler 17 is in threaded connection with the side wall of the second groove 14 through a connecting column, and the connecting column is screwed down to adjust the distance between the chalk clamping groove 20 and the fixed needle 12 so as to determine the radius of the circle;
when drawing an ellipse, a first movable ruler 9 is connected with a first groove 3 arranged on a first fixed ruler 1 in a sliding way, a connecting column in threaded connection with the side wall of the first groove 3 penetrates through a second sliding chute 10 arranged on the lower half part of the first movable ruler 9, a first sliding chute 2 is arranged in the middle of the first movable ruler 9, a movable rod in sliding connection with a through hole arranged on the side wall of a flat plate 12 penetrates through the side wall of the first groove 3 and the first sliding chute 2, a tape switch 7 is arranged on a tape measure connected with the side wall of the first fixed ruler 1 through a cross column 21, a nylon rope 8 is wound on the tape measure, the nylon rope 8 is wound with the movable rod, the movable rod and one end of the cross column 21, which are positioned on the flat plate 12, are connected with a detachable sucker, the movable rod is adjusted to be slightly adjusted to be approximately positioned on an ellipse long axis, the device is adsorbed on a blackboard through the sucker to determine the ellipse long axis, the position between the, the position of a chalk clamping groove 20 connected with the second movable ruler 17 through a cross rod is adjusted to determine the length of the short axis of the ellipse, at the moment, the fourth sliding groove 13 and the second groove 14 are loosened, the tape switch 7 is opened, the nylon rope 8 is pulled to be wound on the cross rod, the tape switch 7 is closed after the nylon rope 8 is straightened, and the ellipse can be drawn through the nylon rope 8 and the chalk clamping groove 20 on the cross column.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. Arc line drawing device for mathematical education, which comprises a first fixed ruler (1) and a flat plate (12) connected with the first fixed ruler (1) in a sliding manner, and is characterized in that a first groove (3) is formed in the first fixed ruler (1), a first movable ruler (9) is connected in the first groove (3) in a sliding manner, a first sliding groove (2) is formed in the middle of the first movable ruler (9), a second sliding groove (10) is formed in the lower end of the first movable ruler (9), a connecting column is connected with the side wall of the first groove (3) in a threaded manner and penetrates through the second sliding groove (10), a through hole is formed in the side wall of the flat plate (12), a movable rod is connected in the through hole in a sliding manner and penetrates through the side wall of the first groove (3) and the first sliding groove (2), and a first knob (11) is fixedly connected with one end of the movable rod, the utility model discloses a fixing device for oval length axis, including first fixed ruler (1), dull and stereotyped (12) lateral wall threaded connection have a connecting rod, the connecting rod runs through third sliding tray (4), the cover is equipped with second fixed ruler (6) on the connecting rod, connecting rod one end fixedly connected with second knob (5), second recess (14) have been seted up to second fixed ruler (6) lateral wall, third recess (19) have been seted up to dull and stereotyped (12) lateral wall, be equipped with in second recess (14) and adjust the radial first adjusting device of pitch arc, the fixing device who has the fixed centre of a circle is connected in the third recess (19) of telling, install the second adjusting device that can adjust oval length axis position on first fixed ruler (1).
2. The arc drawing device for mathematical education as claimed in claim 1, wherein the first adjusting device includes a second movable ruler (17) slidably connected in a second groove (14), a plurality of threaded pin holes (16) are uniformly formed in the second movable ruler (17), a cross bar matched with the pin holes (16) is connected to the side wall of the second movable ruler (17) in a threaded manner, a third knob (15) is fixedly connected to one end of the cross bar, a chalk clamping groove (20) is fixedly connected to one end of the cross bar, which is far away from the third knob (15), the cross bar penetrates through the side wall of the second movable ruler (17) and can move freely, a fourth sliding groove (13) is formed in the second movable ruler (17), a connecting column is connected to the side wall of the second groove (14) in a threaded manner, and the connecting column penetrates through the fourth sliding groove (13).
3. An arc drawing device for mathematics teaching according to claim 1, characterized in that said fixing means comprises a transverse plate slidably connected in the third groove (19), said transverse plate side wall is elastically connected with the side wall of the third groove (19) by a spring, one side of said transverse plate far from the spring is fixedly connected with a fixing pin (18), and said connecting rod is communicated with the third groove (19).
4. An arc drawing device for mathematics teaching according to claim 1, characterized in that said second adjusting device comprises a cross post (21) fixedly connected to the first fixed ruler (1), said cross post (21) penetrates through the first fixed ruler (1) and the flat plate (12), a tape measure is fixedly connected to one end of said cross post (21), a tape measure switch (7) is arranged on said tape measure, a nylon rope (8) is wound on said tape measure, and said nylon rope (8) is wound on the movable rod.
5. The arc drawing device for mathematics teaching as claimed in claim 1, wherein said movable rod and the end of the cross-post (21) on the plate (12) are both connected with detachable suckers, and one end of said connecting post is fixedly connected with a screw cap.
6. The arc line drawing device for mathematics teaching as claimed in claim 1, wherein said first fixed ruler (1) and said plate (12) are fitted with a rubber pad, said rubber pad being provided with anti-skid lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920778728.5U CN210211829U (en) | 2019-05-27 | 2019-05-27 | Arc drawing device for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920778728.5U CN210211829U (en) | 2019-05-27 | 2019-05-27 | Arc drawing device for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210211829U true CN210211829U (en) | 2020-03-31 |
Family
ID=69928120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920778728.5U Expired - Fee Related CN210211829U (en) | 2019-05-27 | 2019-05-27 | Arc drawing device for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210211829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823760A (en) * | 2020-07-28 | 2020-10-27 | 哈尔滨师范大学 | Mathematical modeling drawing device |
-
2019
- 2019-05-27 CN CN201920778728.5U patent/CN210211829U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823760A (en) * | 2020-07-28 | 2020-10-27 | 哈尔滨师范大学 | Mathematical modeling drawing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 Termination date: 20210527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |