CN111251755B - Teaching compass ruler and use method thereof - Google Patents
Teaching compass ruler and use method thereof Download PDFInfo
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- CN111251755B CN111251755B CN202010157186.7A CN202010157186A CN111251755B CN 111251755 B CN111251755 B CN 111251755B CN 202010157186 A CN202010157186 A CN 202010157186A CN 111251755 B CN111251755 B CN 111251755B
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 210000001503 joint Anatomy 0.000 claims abstract description 20
- 239000011324 bead Substances 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 10
- 239000002023 wood Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/02—Compasses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/16—Features common to compasses, dividers, and callipers
- B43L9/24—Means for mounting points or writing appliances on legs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/16—Features common to compasses, dividers, and callipers
- B43L9/24—Means for mounting points or writing appliances on legs
- B43L9/245—Means for mounting points or writing appliances on legs for mounting centering elements
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- Drawing Aids And Blackboards (AREA)
Abstract
The invention provides a compass ruler for teaching and a using method thereof, and relates to the field of education. This compasses chi is used in teaching when using, use the chalk earlier and draw the position in required centre of a circle on the blackboard, find accurate and fix centre of a circle positioning mechanism's position through centre of a circle positioning mechanism, then will fix a position end and centre of a circle positioning mechanism butt joint, begin to draw the circle after that, reached and to find the effect that centre of a circle stable positioning painted circles, thereby effectual solved present teaching with the compasses chi difficult firm when using on the blackboard, the centre of a circle slides easily during the drawing, the problem of error appears easily.
Description
The invention is a divisional application of a teaching compass ruler, which has an application date of 2018, 10 and 26 months and an application number of CN 201811261161.0.
Technical Field
The invention relates to the technical field of education, in particular to a compasses ruler for teaching.
Background
The compasses are a commonly used teaching tool, are often used for drawing circles, drawing arcs and the like, can also be divided into compasses for teaching and compasses for students, are small and convenient to carry, and are mainly used for teaching.
The compasses for teaching are tools for drawing on a blackboard, the compasses for teaching can be used only by fixing a section on the blackboard when drawing on the blackboard, one of the prior methods for fixing the compasses is to directly insert a metal nail at one end of a ruler, when the compasses are used, the nails are used for pricking on the blackboard for drawing circles, the blackboard can have a plurality of concave places to cause the damage of the blackboard after long-time use, the other method is to fix the compasses by a magnet, namely, one end of the ruler is fixed at the center of a circle by a square magnetic block, the circle can be drawn by the method, but the great defects exist, firstly, the magnetic block needs a certain area to be difficult to slide, the shape of the magnetic block is difficult to find the center of a circle, the second magnetic block needs the blackboard made of an adsorbable material, the third magnetic block is difficult to be taken down from the blackboard after use, the prior circular ruler for teaching is difficult to be fixed on the blackboard when in use, the circle center is easy to slide when drawing, and errors are easy to occur, so that a compasses ruler for teaching is needed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a teaching compass ruler, which solves the problems that the existing teaching compass ruler is not easy to be fixed on a blackboard in use, the circle center is easy to slide in drawing, and errors are easy to occur.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a compasses chi is used in teaching, includes first compasses chi, second compasses chi and centre of a circle positioning mechanism, the one end of first compasses chi is articulated with the one end of second compasses chi, the one end joggle that the second compasses chi was kept away from to first compasses chi has first connecting block, the surface of first connecting block is circular form, the one end joggle that first compasses chi was kept away from to first connecting block has clamping rod, solid fixed ring has been cup jointed on the surface of first clamping rod, gu fixed ring's inner wall and clamping rod's surface sliding connection, the one end joggle that first compasses chi was kept away from to the second compasses chi has the second connecting block, the surface of second connecting block is circular form, the one side joggle that first compasses chi was kept away from to the second connecting block has the location end, the inside of location end is inlayed and is had first magnetic force pearl, first magnetic force pearl is located the central point of location end and puts.
Preferably, the surface of first ruler and second ruler all is provided with the scale, the material of first ruler and second ruler includes timber, the one end of first ruler and the mutual handing-over of second ruler is the arc shape, and the scale can make the compasses chi also can be used as the ruler to measure the use when drawing the circle.
Preferably, the number of the clamping rods is three, the three clamping rods are circumferentially distributed by taking the center of the surface of the first connecting block as a circle center, the three clamping rods are made of wood, the three clamping rods can be bent to a certain degree and have certain toughness, and chalk is clamped between the three clamping rods.
Preferably, one end of the positioning end far away from the second connecting block is in a circular arc shape, and the surface of the first magnetic bead is in a circular sphere shape.
Preferably, centre of a circle positioning mechanism includes rubber suction cup, rubber suction cup's material includes transparent rubber, rubber suction cup's surface bonds has centre of a circle locating piece, centre of a circle locating piece is located rubber suction cup's top central point and puts, and rubber suction cup that transparent rubber made is convenient when adsorbing fixedly observes, can not obstruct the position of observing the centre of a circle.
Preferably, a circle center positioning hole is formed in the surface of the circle center positioning block and located at the center of the circle center positioning block, a first telescopic pipe is connected to the inner wall of the circle center positioning hole in a sliding mode, a second telescopic pipe is connected to the inner wall of the first telescopic pipe in a sliding mode, a first spring is fixedly connected to the surface of the second telescopic pipe, one end, away from the second telescopic pipe, of the first spring is fixedly connected to the inner wall of the first telescopic pipe, a limiting groove is formed in the inner wall of the first telescopic pipe, a sliding block is connected to the inner wall of the limiting groove in a sliding mode, and the surface of the sliding block is fixedly connected to the surface.
Preferably, the inner wall sliding connection of the flexible pipe of second has flexible locating lever, the fixed surface of flexible locating lever is connected with the second spring, the one end that flexible locating lever was kept away from to the second spring and the inner wall fixed connection of the flexible pipe of second, the spacing groove has been seted up to the inner wall of the flexible pipe of second, the inner wall sliding connection of spacing groove has the slider, the surface of slider is connected with the fixed surface of flexible locating lever, the surface bonding of flexible locating lever has the arc rubber pad, and the landing of the flexible pipe of second and flexible locating lever can be avoided to spacing groove and stopper, and the centre of a circle can be aimed at accurately to the arc one end of arc rubber pad, also plays certain antiskid effect simultaneously, also can avoid damaging the blackboard.
Preferably, a sealing gasket is bonded on the inner wall of the circle center positioning hole, a first vent hole is formed in the surface of the first telescopic pipe, one end of the first vent hole is communicated with the inside of the rubber sucker, a second vent hole is formed in the surface of the circle center positioning block and the surface of the sealing gasket, and one end of the second vent hole is communicated with the outside.
Preferably, the fixed surface of first flexible pipe is connected with the butt joint end, the butt joint end is located the central point of centre of a circle locating piece and puts, the arc wall has been seted up to the upper surface of butt joint end, the inner wall of arc wall is inlayed and is had second magnetic force pearl, second magnetic force pearl is located the central point of arc wall and puts, the surface of second magnetic force pearl is the ball form, first magnetic force pearl is different with second magnetic force pearl magnetism, the lower surface of butt joint end is inlayed and is had the ball, the surface of ball and the upper surface sliding connection of centre of a circle locating piece.
(III) advantageous effects
(1) When the chalk is used, the required circle center position is drawn on the blackboard by using the chalk, the position of the circle center positioning mechanism is aligned and fixed through the circle center positioning mechanism, then the positioning end is butted with the circle center positioning mechanism, and then the circle is drawn, so that the effect of stably positioning and drawing the circle by aligning the circle center is achieved.
(2) According to the invention, through the arrangement of the circle center positioning mechanism, the butt joint end is firstly rotated when the blackboard eraser is used, the butt joint end drives the first telescopic pipe to rotate, the first telescopic pipe rotates to drive the first vent hole to rotate, the first vent hole is separated from the second vent hole, the sealing gasket is blocked, then the convex arc-shaped rubber pad is butted with the circle center position drawn on the blackboard, then the circle center positioning block is pressed, the rubber sucker is pressed by the circle center positioning block and adsorbed on the blackboard, the effects of aligning the circle center in a contact manner and improving the circle drawing accuracy are achieved, and meanwhile, the circle center of a circle can be stably drawn by negative pressure.
(3) When the remaining blackboard of the circle center positioning mechanism needs to be separated, the circle center positioning block is only required to be rotated to enable the first vent hole to be in contact with the second vent hole, and external air enters the rubber sucker through the second vent hole and the first vent hole, so that the circle center positioning mechanism can be easily taken down, and the effect of facilitating separation of the sucker is achieved.
(4) According to the invention, the first spring and the second spring are arranged, so that on the first aspect, the first spring and the second spring can extend and retract, the telescopic positioning rod and the second telescopic pipe can retract, the rubber sucker can not be influenced to be adsorbed on a blackboard, and on the second aspect, the first spring and the second spring can transmit a contact sense of a reverse force to a hand when the hand extrudes the circle center positioning mechanism, so that the aim of aligning the circle center is conveniently controlled.
(5) According to the invention, the telescopic positioning rod is arranged, so that the telescopic positioning rod can transmit a contact feeling to the hand part, and the projected telescopic positioning rod can facilitate the user to observe and align the circle center.
(6) According to the compass, the second magnetic bead is arranged, so that the second magnetic bead is in butt joint with the positioning end, the positioning end can be prevented from sliding out of the circle center positioning mechanism, meanwhile, the first magnetic bead and the second magnetic bead are mutually attracted, and the circle center alignment can be guaranteed while the compass can flexibly rotate.
(7) According to the compass ruler, the circle center positioning hole is arranged at the central position of the circle center positioning block, the only rubber sucker of the circle center positioning block is arranged at the central position, the butt joint end is arranged at the central position of the circle center positioning block, and the second magnetic bead is arranged at the central position of the arc-shaped groove, so that the circle center aligned with the positioning end is always consistent with the circle center fixed by the circle center positioning mechanism when a circle is drawn, and the problems that the existing compass ruler for teaching is not easy to be fixed on a blackboard when used, the circle center is easy to slide when the circle is drawn, and errors are easy to occur are.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the circle center positioning mechanism of the present invention;
FIG. 3 is a bottom view of the first connecting block structure of the present invention;
FIG. 4 is a top view of the rubber suction cup structure of the present invention.
The device comprises a first gauge 1, a second gauge 2, a 3 circle center positioning mechanism, a 301 rubber sucker, a 302 circle center positioning block, a 303 circle center positioning hole, a 304 first telescopic pipe, a 305 second telescopic pipe, a 306 first spring, a 307 telescopic positioning rod, a 308 second spring, a 309 arc-shaped rubber pad, a 3010 sealing pad, a 3011 first vent hole, a 3012 second vent hole, a 3013 butt joint end, a 3014 second magnetic bead, a 3015 arc-shaped groove, a 4 first connecting block, a 5 clamping rod, a 6 fixing ring, a 7 second connecting block, an 8 positioning end and a 9 first magnetic bead.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, an embodiment of the present invention provides a compass ruler for teaching, including a first ruler 1, a second ruler 2 and a circle center positioning mechanism 3, wherein the surfaces of the first ruler 1 and the second ruler 2 are respectively provided with scales, the materials of the first ruler 1 and the second ruler 2 include wood, the end where the first ruler 1 and the second ruler 2 are connected with each other is in a circular arc shape, the end of the first ruler 1 is hinged with the end of the second ruler 2, the end of the first ruler 1 far away from the second ruler 2 is jogged with a first connecting block 4, the surface of the first connecting block 4 is in a circular shape, the end of the first connecting block 4 far away from the first ruler 1 is jogged with clamping rods 5, the number of the clamping rods 5 is three, the three clamping rods 5 are circumferentially distributed with the center of the surface of the first connecting block 4 as a circle center, chalk is clamped between the three clamping rods 5, the surface of the first clamping ring 5 is sleeved with a chalk 6, the inner wall of the fixing ring 6 is connected with the surface of the clamping rod 5 in a sliding manner, one end, away from the first gauge 1, of the second gauge 2 is in joggle joint with a second connecting block 7, the surface of the second connecting block 7 is circular, one side, away from the first gauge 1, of the second connecting block 7 is in joggle joint with a positioning end 8, a first magnetic bead 9 is embedded inside the positioning end 8, one end, away from the second connecting block 7, of the positioning end 8 is arc-shaped, the surface of the first magnetic bead 9 is spherical, the first magnetic bead 9 is located at the center of the positioning end 8, the circle center positioning mechanism 3 comprises a rubber sucker 301, the rubber sucker 301 is made of transparent rubber, a circle center positioning block 302 is bonded on the surface of the rubber sucker 301, the circle center positioning block 302 is located at the top center of the rubber sucker 301, a circle center positioning hole 303 is formed in the surface of the circle center positioning block 302, the circle center, the inner wall of the circle center positioning hole 303 is connected with a first extension tube 304 in a sliding manner, the inner wall of the first extension tube 304 is connected with a second extension tube 305 in a sliding manner, the surface of the second extension tube 305 is fixedly connected with a first spring 306, one end of the first spring 306 far away from the second extension tube 305 is fixedly connected with the inner wall of the first extension tube 304, the inner wall of the first extension tube 304 is provided with a limiting groove, the inner wall of the limiting groove is connected with a slide block in a sliding manner, the surface of the slide block is fixedly connected with a telescopic positioning rod 307, the surface of the telescopic positioning rod 307 is fixedly connected with a second spring 308, one end of the second spring 308 far away from the telescopic positioning rod 307 is fixedly connected with the inner wall of the second extension tube 305, the inner wall of the second extension tube 305 is provided with a limiting groove, the inner wall of the limiting groove is connected with a slide block, an arc-shaped rubber pad 309 is bonded on the surface of the telescopic positioning rod 307, a sealing gasket 3010 is bonded on the inner wall of the circle center positioning hole 303, a first vent hole 3011 is formed in the surface of the first telescopic pipe 304, one end of the first vent hole 3011 is communicated with the inside of the rubber sucker 301, a second vent hole 3012 is formed in the surface of the circle center positioning block 302 and the surface of the sealing gasket 3010, one end of the second vent hole 3012 is communicated with the outside, a butt joint end 3013 is fixedly connected to the surface of the first telescopic pipe 304, the butt joint end 3013 is located at the central position of the circle center positioning block 302, an arc-shaped groove 3015 is formed in the upper surface of the butt joint end 3013, a second magnetic bead 3014 is inlaid in the inner wall of the arc-shaped groove 3014, a second magnetic bead 3014 is located at the central position of the inner wall of the arc-shaped groove 3015, the surface of the second magnetic bead 3014 is in a round, the surface of the ball is slidably connected with the upper surface of the circle center positioning block 302.
When the chalk is used, the fixing ring 6 is slid to be close to the first connecting block 4, the clamping rods 5 are broken off, chalks are inserted among the three clamping rods 5, then the fixing ring 6 is slid on the clamping rods 5 to fix the chalks, then the needed circular position is drawn by the chalks, then the circle center positioning mechanism 3 is independently operated, the butt end 3013 is rotated, the butt end 3013 drives the first telescopic pipe 304 to rotate, the first telescopic pipe 304 rotates to drive the first vent hole 3011 to rotate, the first vent hole 3011 is separated from the second vent hole 3012, the sealing gasket 3010 is sealed, the convex arc-shaped rubber pad 309 is butted with the circle center position drawn on the blackboard, then the circle center positioning block 302 is pressed, the circle center positioning block 302 presses the rubber sucker 301, the rubber sucker 301 is adsorbed on the blackboard, then the positioning end 8 is butted with the arc-shaped groove 3015, the first magnetic bead 9 and the second magnetic bead 3014 attract each other, then the chalk contacts the blackboard, begins to draw a circle, after the circle is drawn, the positioning end 8 is separated from the arc-shaped groove 3015, the circle center positioning block 302 is rotated, the first vent hole 3011 is contacted with the second vent hole 3012, external air enters the inside of the rubber suction cup 301 through the second vent hole 3012 and the first vent hole 3011, and the circle center positioning mechanism 3 is taken down from the blackboard, so that the use process of the whole compasses ruler for teaching is completed.
Claims (1)
1. The utility model provides a compasses chi is used in teaching, includes first compasses chi (1), second compasses chi (2) and centre of a circle positioning mechanism (3), its characterized in that: one end of the first gauge (1) is hinged to one end of the second gauge (2), one end of the second gauge (2) far away from the first gauge (1) is in joggle connection with a first connecting block (4), the surface of the first connecting block (4) is circular, one end of the first connecting block (4) far away from the second gauge (2) is in joggle connection with a clamping rod (5), a fixing ring (6) is sleeved on the surface of the clamping rod (5), the inner wall of the fixing ring (6) is in surface sliding connection with the clamping rod (5), one end of the first gauge (1) far away from the second gauge (2) is in joggle connection with a second connecting block (7), the surface of the second connecting block (7) is circular, one face of the second connecting block (7) far away from the first gauge (1) is in joggle connection with a positioning tenon end (8), and a first magnetic bead (9) is inlaid in the positioning end (8), the first magnetic bead (9) is positioned at the central position of the positioning end head (8); scales are arranged on the surfaces of the first ruler (1) and the second ruler (2), the first ruler (1) and the second ruler (2) are made of wood, and one ends of the first ruler (1) and the second ruler (2) which are hinged to each other are in an arc shape; the number of the clamping rods (5) is three, the three clamping rods (5) are circumferentially distributed by taking the center of the surface of the first connecting block (4) as a circle center, and chalk is clamped among the three clamping rods (5); one end, far away from the second connecting block (7), of the positioning end head (8) is in an arc shape, and the surface of the first magnetic bead (9) is in a spherical shape; the circle center positioning mechanism (3) comprises a rubber sucker (301), the rubber sucker (301) is made of transparent rubber, a circle center positioning block (302) is bonded to the surface of the rubber sucker (301), and the circle center positioning block (302) is located at the center of the top of the rubber sucker (301); a circle center positioning hole (303) is formed in the surface of the circle center positioning block (302), the circle center positioning hole (303) is located at the center of the circle center positioning block (302), the inner wall of the circle center positioning hole (303) is connected with a first telescopic pipe (304) in a sliding mode, the inner wall of the first telescopic pipe (304) is connected with a second telescopic pipe (305) in a sliding mode, the surface of the second telescopic pipe (305) is fixedly connected with a first spring (306), one end, far away from the second telescopic pipe (305), of the first spring (306) is fixedly connected with the inner wall of the first telescopic pipe (304), a limiting groove is formed in the inner wall of the first telescopic pipe (304), a sliding block is connected to the inner wall of the limiting groove in a sliding mode, and the surface of the sliding block is fixedly; the inner wall of the second telescopic pipe (305) is connected with a telescopic positioning rod (307) in a sliding mode, the surface of the telescopic positioning rod (307) is fixedly connected with a second spring (308), one end, far away from the telescopic positioning rod (307), of the second spring (308) is fixedly connected with the inner wall of the second telescopic pipe (305), the inner wall of the second telescopic pipe (305) is provided with a limiting groove, the inner wall of the limiting groove is connected with a sliding block in a sliding mode, the surface of the sliding block is fixedly connected with the surface of the telescopic positioning rod (307), and an arc-shaped rubber pad (309) is bonded on the surface of the telescopic positioning rod (307); a sealing gasket (3010) is bonded on the inner wall of the circle center positioning hole (303), a first vent hole (3011) is formed in the surface of the first telescopic pipe (304), one end of the first vent hole (3011) is communicated with the inside of the rubber sucker (301), a second vent hole (3012) is formed in the surface of the circle center positioning block (302) and the surface of the sealing gasket (3010), and one end of the second vent hole (3012) is communicated with the outside; the surface of the first extension pipe (304) is fixedly connected with a butt joint end head (3013), the butt joint end head (3013) is positioned at the center of the circle center positioning block (302), the butt joint end (3013) is rotated to drive the first telescopic pipe (304) to rotate to realize the communication or separation of the first vent hole (3011) and the second vent hole (3012), an arc-shaped groove (3015) is formed in the upper surface of the butt joint end (3013), a second magnetic bead (3014) is embedded in the inner wall of the arc-shaped groove (3015), the second magnetic bead (3014) is positioned at the central position of the inner wall of the arc-shaped groove (3015), the surface of the second magnetic bead (3014) is in a spherical shape, the first magnetic bead (9) and the second magnetic bead (3014) have different magnetism, the lower surface of the butt joint end head (3013) is embedded with a ball, and the surface of the ball is in sliding connection with the upper surface of the circle center positioning block (302);
when the chalk is used, the fixing ring (6) is slid to be close to the first connecting block (4), the clamping rods (5) are broken off, chalks are inserted among the three clamping rods (5), then the fixing ring (6) is slid on the clamping rods (5) to fix the chalks, then the needed circular position is drawn by the chalks, then the circle center positioning mechanism (3) is independently operated, the butt joint end (3013) is firstly rotated, the butt joint end (3013) drives the first telescopic pipe (304) to rotate, the first telescopic pipe (304) rotates to drive the first vent hole (3011) to rotate, the first vent hole (3011) is separated from the second vent hole (3012), the sealing gasket (3010) is sealed, the convex arc-shaped rubber gasket (309) is butted with the circle center position drawn on the blackboard, then the circle center positioning block (302) is pressed, the rubber sucker (301) is pressed by the circle center positioning block (302), and the rubber sucker (301) is adsorbed on the blackboard, and then the positioning end (8) is butted with the arc-shaped groove (3015), the first magnetic bead (9) and the second magnetic bead (3014) are mutually attracted, then the chalk is contacted with the blackboard, the circle drawing is started, after the circle drawing is finished, the positioning end (8) is separated from the arc-shaped groove (3015), the circle center positioning block (302) is rotated, the first vent hole (3011) is contacted with the second vent hole (3012), the external gas enters the inside of the rubber sucker (301) through the second vent hole (3012) and the first vent hole (3011), the circle center positioning mechanism (3) is taken down from the blackboard, and therefore the using process of the whole teaching compasses ruler is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157186.7A CN111251755B (en) | 2018-10-26 | 2018-10-26 | Teaching compass ruler and use method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157186.7A CN111251755B (en) | 2018-10-26 | 2018-10-26 | Teaching compass ruler and use method thereof |
| CN201811261161.0A CN109130626B (en) | 2018-10-26 | 2018-10-26 | Compasses ruler for teaching |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811261161.0A Division CN109130626B (en) | 2018-10-26 | 2018-10-26 | Compasses ruler for teaching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111251755A CN111251755A (en) | 2020-06-09 |
| CN111251755B true CN111251755B (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811261161.0A Active CN109130626B (en) | 2018-10-26 | 2018-10-26 | Compasses ruler for teaching |
| CN202010157186.7A Active CN111251755B (en) | 2018-10-26 | 2018-10-26 | Teaching compass ruler and use method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811261161.0A Active CN109130626B (en) | 2018-10-26 | 2018-10-26 | Compasses ruler for teaching |
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| CN109130626B (en) * | 2018-10-26 | 2020-05-05 | 杭州海特工量具有限公司 | Compasses ruler for teaching |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109130626B (en) * | 2018-10-26 | 2020-05-05 | 杭州海特工量具有限公司 | Compasses ruler for teaching |
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| KR20130072965A (en) * | 2011-12-22 | 2013-07-02 | 현대중공업 주식회사 | Multi compass |
| CN202623700U (en) * | 2012-07-02 | 2012-12-26 | 张玲 | Teaching compasses |
| CN204322844U (en) * | 2014-12-15 | 2015-05-13 | 徐士标 | A kind of mathematic compasses of drawing for blackboard |
| CN204367694U (en) * | 2015-01-17 | 2015-06-03 | 湖南城市学院 | A kind of multi-functional blackboard chi |
| CN205416883U (en) * | 2016-01-25 | 2016-08-03 | 信阳农林学院 | Take teaching type compasses of sucking disc |
| CN206633660U (en) * | 2016-09-09 | 2017-11-14 | 孙艳丽 | A kind of single arm type laser positioning compass for math teaching |
| CN206406665U (en) * | 2017-01-11 | 2017-08-15 | 安徽工商职业学院 | A kind of compasses dedicated for teaching |
| CN207274232U (en) * | 2017-05-25 | 2018-04-27 | 王洪生 | A kind of compass for math teaching |
| CN107718953A (en) * | 2017-10-26 | 2018-02-23 | 绍兴柯桥雷霄机械科技有限公司 | A kind of compasses for teaching of fix stably |
| CN109605991A (en) * | 2018-12-26 | 2019-04-12 | 韦明肯 | It is a kind of to position the white board compasses for printing off the center of circle |
-
2018
- 2018-10-26 CN CN201811261161.0A patent/CN109130626B/en active Active
- 2018-10-26 CN CN202010157186.7A patent/CN111251755B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130626B (en) * | 2018-10-26 | 2020-05-05 | 杭州海特工量具有限公司 | Compasses ruler for teaching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109130626A (en) | 2019-01-04 |
| CN111251755A (en) | 2020-06-09 |
| CN109130626B (en) | 2020-05-05 |
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