CN108638711A - A kind of figure scoring tool of mathematical education - Google Patents
A kind of figure scoring tool of mathematical education Download PDFInfo
- Publication number
- CN108638711A CN108638711A CN201810700662.8A CN201810700662A CN108638711A CN 108638711 A CN108638711 A CN 108638711A CN 201810700662 A CN201810700662 A CN 201810700662A CN 108638711 A CN108638711 A CN 108638711A
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- China
- Prior art keywords
- scribing line
- arm
- wall
- lead screw
- mounting rod
- 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.)
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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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- Electrically Operated Instructional Devices (AREA)
- Toys (AREA)
Abstract
The invention discloses a kind of figure scoring tools of mathematical education, the figure scoring tool includes fixed arm, turning set is equipped with scribing line arm in the fixed arm, one end of the scribing line arm offers sliding slot, slide bar is slidably fitted in sliding slot, one end of slide bar extends to the outside of scribing line arm, the bottom of slide bar opens up fluted, it is installed with the same shaft on the both sides inner wall of groove, turning set is equipped with mounting rod in shaft, the bottom end of mounting rod extends to the lower section of scribing line arm and offers ledge for chalk on blackboard, and mounting rod is located at the side of scribing line arm, the side of the mounting rod is hinged with draw bar, the through-hole that side is set as opening is offered in the bottom interior wall of sliding slot.The present invention adjusts round radius by adjusting the extension elongation of slide bar, and slide bar, mounting rod, chalk etc. can be accommodated in sliding slot, convenient for disassembling fixed arm from scribing line arm, reduces the occupied space of device, teacher is facilitated to carry, easy to use.
Description
Technical field
The present invention relates to technical field of teaching instruments, the figure scoring tool of specially a kind of mathematical education.
Background technology
College Maths are in the teaching process for deriving mathematical formulae, in order to which student can more intuitively understand expressed by formula
Meaning, need to draw corresponding with mathematical formulae curve graph, still, in present teaching process, when drawing, typically
Teacher manually maps on blackboard, cumbersome due to drawing coordinate system on blackboard, when drawing, do not paint generally
Coordinate system processed causes the figure drawn lack of standardization, and nonstandard figure just cannot express the meaning represented by it well.Through retrieving,
Drawing tool in a kind of mathematical education is disclosed application No. is 201710224490.7 patent document, including fixed plate and thoroughly
Isotropic disk, transparent panel are fixedly connected on the front of fixed plate, have interval between transparent panel and fixed plate, have on the leading flank of fixed plate
Multigroup sliding slot group is placed with template fixed frame in interval, and template fixed frame includes the substrate vertically placed, the right side of substrate
Multiple idler wheels corresponding with sliding slot group are housed, idler wheel is placed in sliding slot group, composition substrate left and right in sliding slot group through idler wheel on face
The structure of sliding, equipped with multiple through substrate and the first crossbars that can horizontally slip on substrate, the end of first crossbar is equipped with seat
Target has reference axis on template；The first spring is set in first crossbar；Shaft is housed on template, is equipped with and sets in shaft
The mandril rotated upwardly and downwardly between template and substrate and through shaft, is equipped with baffle on substrate, the placement location of coordinate block not by
Limitation can correspond with formula well.
But mostly there is inconvenience to skid off circle, and inconvenient adjusting circular half for figure scoring tool in the prior art
Diameter size, the mostly inconvenient storage of common figure scoring tool are split, and occupied space is larger, not the problem of Portable belt.
Invention content
In view of the above problems, the present invention provides a kind of figure scoring tool of mathematical education, which can
It, can be by figure scoring tool effectively to solve the problems, such as that existing figure scoring tool inconvenience adjusts circular radius in background technology
It splits, storage, reduces the occupied space of figure scoring tool, facilitate teacher to carry and use.
To achieve the above object, the present invention provides the following technical solutions：
A kind of figure scoring tool of mathematical education, which includes fixed arm, rotates and is arranged in the fixed arm
There are scribing line arm, one end of the scribing line arm to offer sliding slot, slide bar is slidably fitted in sliding slot, one end of slide bar extends to scribing line
The outside of arm, the bottom of slide bar open up fluted, and the same shaft is installed on the both sides inner wall of groove, is rotated in shaft
It is arranged with mounting rod, the bottom end of mounting rod extends to the lower section of scribing line arm and offers ledge for chalk on blackboard, and mounting rod is located at scribing line arm
Side；
The side of the mounting rod is hinged with draw bar, and side is offered in the bottom interior wall of sliding slot and is set as the logical of opening
Hole, through-hole is interior to be equipped with the lead screw being vertically arranged, and thread bush is equipped with positioning plate on lead screw, offers and determines in the top inner wall of groove
The compatible locating slot of position plate, positioning plate are movably arranged in locating slot, and bottom setting is offered on the side inner wall of locating slot
For the placing groove of opening, the one end of draw bar far from mounting rod extends in placing groove and is hinged with the side of positioning plate, fixed
The first threaded hole is offered in the top inner wall of position slot, the top of lead screw extends in the first threaded hole and is installed with anti-skidding
Pad, and lead screw is threadedly coupled with the first threaded hole, the top of non-slip mat is in contact with the top inner wall of sliding slot, and the bottom end of fixed arm is prolonged
It extends to the lower section of scribing line arm and is installed with locating piece, and locating piece is set as inverted conical structure.
As a kind of preferred technical solution of the present invention, rotation compatible with fixed arm is offered at the top of the scribing line arm
Hole, fixed arm are rotatablely connected with rotation hole.
As a kind of preferred technical solution of the present invention, bolt hole is offered on the side wall of the rotation hole, in bolt hole
Screw thread is equipped with screw rod, and one end of screw rod is welded with sliding block, annular groove is offered on the outside of fixed arm, sliding block is slidably mounted on annular
In slot.
As a kind of preferred technical solution of the present invention, the top of the fixed arm extends to the top of scribing line arm and fixed peace
Equipped with pressing plate, the bottom end of lead screw extends to the lower section of scribing line arm and is installed with knob, is installed on the outside of knob anti-
Sliding sleeve.
As a kind of preferred technical solution of the present invention, multiple rubber strips are installed on the side wall of the ledge for chalk on blackboard,
The equidistantly interval setting in a ring of multiple rubber strips.
Bottom is offered as a kind of preferred technical solution of the present invention, on the other side inner wall of the locating slot to be set as
The limiting slot of opening is movably installed with gag lever post in limiting slot, and one end of gag lever post is mutually welded with the other side of positioning plate.
As a kind of preferred technical solution of the present invention, offered in the top inner wall of the groove compatible with lead screw
Second threaded hole, and the second threaded hole is located at side of the lead screw far from mounting rod.
As a kind of preferred technical solution of the present invention, third threaded hole, lead screw and third are offered on the positioning plate
Threaded hole is threadedly coupled.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention mathematical education figure scoring tool by cross arm, sliding slot, slide bar, groove, shaft, mounting rod,
Draw bar, through-hole, lead screw, positioning plate, locating slot, placing groove, limiting slot, gag lever post, the first threaded hole, non-slip mat, ledge for chalk on blackboard
It is matched with rubber strip, chalk is inserted into ledge for chalk on blackboard, turn knobs, knob drives lead screw to be rotated in the first threaded hole, lead screw
Rotation drives non-slip mat to move down, and non-slip mat is made to be detached with the top inner wall of sliding slot, pushes slide bar to be slided in sliding slot, slide bar
Mounting rod movement is driven by shaft, so as to adjust the distance between chalk and locating piece, determines the radius of circle；
It is matched by the second threaded hole, rotation hole, fixed arm, bolt hole, screw rod, locating piece and knob, round radius tune
When saving suitable, negative direction turning knob makes lead screw move up, and lead screw drives rubber pad to be moved upward in the top with sliding slot
Wall is contacted and is fitted closely, the position of fixed slip bar, and the bottom end of locating piece is placed on blackboard, presses by the radius of fixed circle
Pressing plate, the position of fixed fixed arm, the position in the fixed center of circle keep the position of fixed arm motionless, and rotation scribing line arm carries out convenient for teacher
Circle operation is drawn, stowing operation is carried out to slide bar, mounting rod and chalk, the fractionation of fixed arm and arm of crossing is easy to implement, reduces and occupy
Space carries convenient for people；
The present invention adjusts round radius by adjusting the extension elongation of slide bar, and can be by slide bar, mounting rod, chalk etc.
It is accommodated in sliding slot, convenient for disassembling fixed arm from scribing line arm, reduces the occupied space of device, teacher is facilitated to carry, make
With conveniently.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the figure scoring tool of mathematical education proposed by the present invention；
Fig. 2 is a kind of structural schematic diagram of the part A of the figure scoring tool of mathematical education proposed by the present invention；
Fig. 3 is a kind of structural schematic diagram of the part B of the figure scoring tool of mathematical education proposed by the present invention；
Fig. 4 is a kind of structural schematic diagram of the C portion of the figure scoring tool of mathematical education proposed by the present invention；
Fig. 5 is a kind of structural schematic diagram of the parts D of the figure scoring tool of mathematical education proposed by the present invention；
Fig. 6 is the structural representation after mounting rod folding in a kind of figure scoring tool of mathematical education proposed by the present invention
Figure.
In figure：1- scribing line arm, 2- sliding slots, 3- slide bars, 4- grooves, 5- shafts, 6- mounting rods, 7- draw bars, 8- through-holes, 9-
Lead screw, 10- positioning plates, 11- locating slots, 12- placing grooves, 13- limiting slots, 14- gag lever posts, the first threaded holes of 15-, 16- are anti-skidding
Pad, 17- ledges for chalk on blackboard, 18- rubber strips, the second threaded holes of 19-, 20- rotation holes, 21- fixed arms, 22- bolts hole, 23- screw rods, 24-
Locating piece, 25- knobs.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment：
- 6 are please referred to Fig.1, the present invention provides a kind of technical solution：
A kind of figure scoring tool of mathematical education, the figure scoring tool include fixed arm 21, rotate and are arranged in fixed arm 21
There are scribing line arm 1, one end of scribing line arm 1 to offer sliding slot 2, slide bar 3 is slidably fitted in sliding slot 2, one end of slide bar 3, which extends to, draws
The bottom in the outside of line arm 1, slide bar 3 opens up fluted 4, and the same shaft 5 is installed on the both sides inner wall of groove 4, turns
Turning set is equipped with mounting rod 6 on axis 5, and the bottom end of mounting rod 6 extends to the lower section of scribing line arm 1 and offers ledge for chalk on blackboard 17, and pacifies
Fill the side that bar 6 is located at scribing line arm 1；The side of mounting rod 6 is hinged with draw bar 7, and side is offered in the bottom interior wall of sliding slot 2
It is set as the through-hole 8 of opening, top, bottom and the side of through-hole 8 are open state, the hole of as three openings, are set in through-hole 8
There is a lead screw 9 being vertically arranged, thread bush is equipped with positioning plate 10 on lead screw 9, is offered and positioning plate 10 in the top inner wall of groove 4
Compatible locating slot 11, positioning plate 10 are movably arranged in locating slot 11, and bottom is offered on the side inner wall of locating slot 11
It is set as the placing groove 12 of opening, locating slot 11 is for placement positioning plate 10, and this description indicates the one of placing groove 12
Side and bottom are disposed as open state, and the slot of as two openings, the one end of draw bar 7 far from mounting rod 6 extends to placing groove
It is hinged in 12 and with the side of positioning plate 10, the first threaded hole 15, the top of lead screw 9 is offered in the top inner wall of locating slot 11
End extends in the first threaded hole 15 and is installed with non-slip mat 16, and lead screw 9 is threadedly coupled with the first threaded hole 15, anti-skidding
The top of pad 16 is in contact with the top inner wall of sliding slot 2, and the bottom end of fixed arm 21 extends to the lower section of scribing line arm 1 and is installed with
Locating piece 24, and locating piece 24 is set as inverted conical structure, in scribing line arm 1, sliding slot 2, slide bar 3, groove 4, shaft 5, installation
Bar 6, draw bar 7, through-hole 8, lead screw 9, positioning plate 10, locating slot 11, placing groove 12, limiting slot 13, gag lever post 14, the first screw thread
Hole 15, non-slip mat 16, ledge for chalk on blackboard 17 and rubber strip 18 cooperation under, chalk is inserted into ledge for chalk on blackboard 17, turn knobs 25, knob
25 drive lead screw 9 in the 15 interior rotation of the first threaded hole, and the rotation of lead screw 9 drives non-slip mat 16 to move down, makes non-slip mat 16 and slide
The top inner wall of slot 2 detaches, and the sliding in sliding slot 2 of slide bar 3, slide bar 3 is pushed to drive mounting rod 6 to move by shaft 5, so as to
The distance between chalk and locating piece 24 are enough adjusted, determines the radius of circle；In the second threaded hole 19, rotation hole 20, fixed arm 21, spiral shell
Keyhole 22, screw rod 23, locating piece 24 and knob 25 cooperation under, when round radius adjusts suitable, negative direction turning knob 25,
Lead screw 6 is set to move up, lead screw 6 drives rubber pad 16 to be moved upward to and contacts and fit closely with the top inner wall of sliding slot 2, Gu
Determine the position of slide bar 3, the bottom end of locating piece 24 is placed on blackboard by the radius of fixed circle, presses pressing plate, fixed fixed arm 21
Position, the position in the fixed center of circle, keeps the position of fixed arm 21 motionless, rotation scribing line arm 1, and picture circle operation is carried out convenient for teacher, right
Slide bar 3, mounting rod 6 and chalk carry out stowing operation, are easy to implement the fractionation of fixed arm 21 and arm 1 of crossing, reduce occupied space, just
It is carried in people；The present invention adjusts round radius by adjusting the extension elongation of slide bar 3, and can by slide bar 3, mounting rod 6,
Chalk etc. is accommodated in sliding slot 2, convenient for disassembling fixed arm 21 from scribing line arm 1, is reduced the occupied space of device, is facilitated religion
Teacher carries, easy to use.
In the present embodiment, the top of scribing line arm 1 offers rotation hole 20 compatible with fixed arm 21, fixed arm 21 and rotation hole
20 are rotatablely connected, and offer bolt hole 22 on the side wall of rotation hole 20,22 internal thread of bolt hole is equipped with screw rod 23, screw rod 23
One end is welded with sliding block, and the outside of fixed arm 21 offers annular groove, and sliding block is slidably mounted in annular groove, and the top of fixed arm 21 is prolonged
It extends to the top of scribing line arm 1 and is installed with pressing plate, the bottom end of lead screw 9 extends to the lower section of scribing line arm 1 and is installed with
The outside of knob 25, knob 25 is installed with Anti-slip cover, and multiple rubber strips 18 are installed on the side wall of ledge for chalk on blackboard 17, more
Equidistantly interval is arranged a rubber strip 18 in a ring, and the limit that bottom is set as opening is offered on the other side inner wall of locating slot 11
Position slot 13, is movably installed with gag lever post 14 in limiting slot 13, one end of gag lever post 14 is mutually welded with the other side of positioning plate 10, recessed
Offer second threaded hole 19 compatible with lead screw 9 in the top inner wall of slot 4, and to be located at lead screw 9 separate for the second threaded hole 19
The side of mounting rod 6 offers third threaded hole on positioning plate 10, and lead screw 9 is threadedly coupled with third threaded hole, scribing line arm 1,
Sliding slot 2, slide bar 3, groove 4, shaft 5, mounting rod 6, draw bar 7, through-hole 8, lead screw 9, positioning plate 10, locating slot 11, placing groove
12, under the cooperation of limiting slot 13, gag lever post 14, the first threaded hole 15, non-slip mat 16, ledge for chalk on blackboard 17 and rubber strip 18, by powder
Penholder enters ledge for chalk on blackboard 17, turn knobs 25, and knob 25 drives the rotation in the first threaded hole 15 of lead screw 9, the rotation of lead screw 9 to drive anti-
Skidding 16 moves down, and non-slip mat 16 and the top inner wall of sliding slot 2 is made to detach, and pushes the sliding in sliding slot 2 of slide bar 3, slide bar 3 logical
Crossing shaft 5 drives mounting rod 6 to move, and so as to adjust the distance between chalk and locating piece 24, determines the radius of circle；
Two threaded holes 19, rotation hole 20, fixed arm 21, bolt hole 22, screw rod 23, locating piece 24 and knob 25 cooperation under, the half of circle
When diameter adjusts suitable, negative direction turning knob 25 makes lead screw 6 move up, and lead screw 6 drives rubber pad 16 to be moved upward to and slide
The top inner wall of slot 2 is contacted and is fitted closely, the position of fixed slip bar 3, and the radius of fixed circle places the bottom end of locating piece 24
On blackboard, pressing plate, the position of fixed fixed arm 21 are pressed, the position in the fixed center of circle keeps the position of fixed arm 21 motionless, and rotation is drawn
Line arm 1, convenient for teacher carry out picture circle operation, to slide bar 3, mounting rod 6 and chalk carry out stowing operation, be easy to implement fixed arm 21 with
The fractionation of scribing line arm 1, reduces occupied space, is carried convenient for people；The present invention adjusts circle by adjusting the extension elongation of slide bar 3
Radius, and slide bar 3, mounting rod 6, chalk etc. can be accommodated in sliding slot 2, convenient for dismantling fixed arm 21 from scribing line arm 1
Get off, reduces the occupied space of device, teacher is facilitated to carry, it is easy to use.
The operation principle of the present invention：In use, chalk is inserted into ledge for chalk on blackboard 17, multiple rubber strips 18 consolidate chalk
Fixed, turn knobs 25, knob 25 drives the rotation in the first threaded hole 15 of lead screw 9, due between lead screw 9 and the first threaded hole 15
To be threadedly coupled, non-slip mat 16 is driven to move down when lead screw 9 rotates so that non-slip mat 16 is detached with the top inner wall of sliding slot 2,
The limitation to 3 position of slide bar is released, the sliding in sliding slot 2 of slide bar 3, slide bar 3 is pushed to drive mounting rod 6 to move by shaft 5, from
And the distance between chalk and locating piece 24 can be adjusted, determine the radius of circle, when round radius adjusting is suitable, negative direction turns
Dynamic knob 25 so that lead screw 6 moves up, and lead screw 6 drives rubber pad 16 to be moved upward to and contacted simultaneously with the top inner wall of sliding slot 2
It fits closely, the position of fixed slip bar 3, to the radius of fixed circle, the bottom end of locating piece 24 is placed on blackboard, pressing pressure
Plate, the position of fixed fixed arm 21 keep the position of fixed arm 21 motionless at this time to the position in the fixed center of circle, rotation scribing line arm 1,
Scribing line arm 1 rotates in fixed arm 21, and scribing line arm 1 is limited with moving slide-bar 3, and slide bar 3 drives chalk to be drawn on blackboard by mounting rod 6
Circle carries out picture circle operation, after the completion of drawing circle, turning knob 25 so that the top inner wall point of rubber pad 16 and sliding slot 2 convenient for teacher
From, and lead screw 9 is made to be detached with positioning plate 10, and showing turn knob 25 herein so that lead screw 9 is spun out from positioning plate 10,
Lead screw 9 is in discrete state with positioning plate 10 at this time, positioning plate 10 is taken out out of locating slot 11, when lead screw 9 and positioning plate 10
After separation, then mounting rod 6 is rotated so that mounting rod 6 screws in groove 4, in the process by positioning plate 10 and draw bar 7
It is placed in groove 4, since lead screw 9 has been detached with positioning plate 10 at this time, the top of lead screw 9 is screwed in the second threaded hole 19,
Lead screw 9 drives rubber pad 16 to be moved in the second threaded hole 19, until the top of rubber pad 16 and the top inner wall of sliding slot 2 are close
The stowing operation to slide bar 3, mounting rod 6 and chalk, turn screw rod 23 so that screw rod are realized in fitting, the position of fixed slip bar 3
23 detach with bolt hole 22, and the extraction out of rotation hole 20 by fixed arm 21 realizes the fractionation of fixed arm 21 and arm 1 of crossing, reduces and occupy
Space carries convenient for people, and teacher can carry out picture linear operating using scribing line arm 1 at this time, and teacher is facilitated to use.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (8)
1. a kind of figure scoring tool of mathematical education, which includes fixed arm (21), is turned on the fixed arm (21)
It is dynamic to be arranged with scribing line arm (1), it is characterised in that：One end of the scribing line arm (1) offers sliding slot (2), and peace is slided in sliding slot (2)
Equipped with slide bar (3), one end of slide bar (3) extends to the outside of scribing line arm (1), and the bottom of slide bar (3) opens up fluted (4), recessed
The same shaft (5) is installed on the both sides inner wall of slot (4), turning set is equipped with mounting rod (6), mounting rod in shaft (5)
(6) bottom end extends to the lower section of scribing line arm (1) and offers ledge for chalk on blackboard (17), and mounting rod (6) is located at the one of scribing line arm (1)
Side；
The side of the mounting rod (6) is hinged with draw bar (7), and offering side in the bottom interior wall of sliding slot (2) is set on
The through-hole (8) of mouth, through-hole (8) is interior to be equipped with the lead screw (9) being vertically arranged, and thread bush is equipped with positioning plate (10), groove on lead screw (9)
(4) it is offered in top inner wall and is movably arranged on positioning with the compatible locating slot (11) of positioning plate (10), positioning plate (10)
In slot (11), the placing groove (12) that bottom is set as opening is offered on the side inner wall of locating slot (11), draw bar (7) is separate
One end of mounting rod (6) extends in placing groove (12) and is hinged with the side of positioning plate (10), the top of locating slot (11)
The first threaded hole (15) is offered on inner wall, the top of lead screw (9) extends in the first threaded hole (15) and is installed with anti-
Skidding (16), and lead screw (9) is threadedly coupled with the first threaded hole (15), in the top of non-slip mat (16) and the top of sliding slot (2)
Wall is in contact, and the bottom end of fixed arm (21) extends to the lower section of scribing line arm (1) and is installed with locating piece (24), and locating piece
(24) it is set as inverted conical structure.
2. the figure scoring tool of mathematical education according to claim 1, it is characterised in that：The top of the scribing line arm (1)
Portion, which is offered, to be rotatablely connected with the compatible rotation hole (20) of fixed arm (21), fixed arm (21) with rotation hole (20).
3. the figure scoring tool of mathematical education according to claim 2, it is characterised in that：The side of the rotation hole (20)
Bolt hole (22) is offered on wall, bolt hole (22) internal thread is equipped with screw rod (23), and one end of screw rod (23) is welded with sliding block,
Fixed arm offers annular groove on the outside of (21), and sliding block is slidably mounted in annular groove.
4. the figure scoring tool of mathematical education according to claim 1, it is characterised in that：The top of the fixed arm (21)
It extends to the top of scribing line arm (1) and is installed with pressing plate, the bottom end of lead screw (9) extends to the lower section of scribing line arm (1) and consolidates
Dingan County is equipped with knob (25), and knob is installed with Anti-slip cover on the outside of (25).
5. the figure scoring tool of mathematical education according to claim 1, it is characterised in that：The side of the ledge for chalk on blackboard (17)
Multiple rubber strips (18), the equidistantly interval setting in a ring of multiple rubber strips (18) are installed on wall.
6. the figure scoring tool of mathematical education according to claim 1, it is characterised in that：The locating slot (11) it is another
The limiting slot (13) that bottom is set as opening is offered on the inner wall of side, and gag lever post (14) is movably installed in limiting slot (13),
One end of gag lever post (14) and the other side of positioning plate (10) are mutually welded.
7. the figure scoring tool of mathematical education according to claim 1, it is characterised in that：The top of the groove (4)
Offered on inner wall with compatible second threaded hole (19) of lead screw (9), and the second threaded hole (19) be located at lead screw (9) far from pacify
Fill the side of bar (6).
8. the figure scoring tool of mathematical education according to claim 1, it is characterised in that：It is opened on the positioning plate (10)
Equipped with third threaded hole, lead screw (9) is threadedly coupled with third threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700662.8A CN108638711B (en) | 2018-06-29 | 2018-06-29 | A kind of figure scoring tool of mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700662.8A CN108638711B (en) | 2018-06-29 | 2018-06-29 | A kind of figure scoring tool of mathematical education |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108638711A true CN108638711A (en) | 2018-10-12 |
| CN108638711B CN108638711B (en) | 2019-11-29 |
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ID=63750422
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810700662.8A Active CN108638711B (en) | 2018-06-29 | 2018-06-29 | A kind of figure scoring tool of mathematical education |
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| Country | Link |
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| CN (1) | CN108638711B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110654146A (en) * | 2019-09-29 | 2020-01-07 | 黑龙江科技大学 | A multi-functional teaching aid for mathematical education usefulness |
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| CN204659290U (en) * | 2015-05-05 | 2015-09-23 | 于风宏 | A kind of integrated mathematical education survey tool |
| KR20170001951U (en) * | 2015-11-26 | 2017-06-05 | 최원태 | Safety Compass |
| CN206914004U (en) * | 2017-04-17 | 2018-01-23 | 龚双 | Round rule are quickly drawn on blackboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2219644A7 (en) * | 1973-02-22 | 1974-09-20 | Benita Max | |
| CN2359133Y (en) * | 1998-11-18 | 2000-01-19 | 颜兴国 | Multifunction compasses |
| CN200970973Y (en) * | 2006-09-26 | 2007-11-07 | 上海市奉贤区育秀实验学校 | Teaching compasses |
| CN201728992U (en) * | 2010-05-25 | 2011-02-02 | 上海大学附属中学 | Moving compasses |
| CN103909771A (en) * | 2013-12-17 | 2014-07-09 | 苏州奥然日用品有限公司 | Novel compass |
| CN204322842U (en) * | 2014-11-21 | 2015-05-13 | 张珺尧 | Simple circle-drawing device |
| CN204659290U (en) * | 2015-05-05 | 2015-09-23 | 于风宏 | A kind of integrated mathematical education survey tool |
| KR20170001951U (en) * | 2015-11-26 | 2017-06-05 | 최원태 | Safety Compass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110654146A (en) * | 2019-09-29 | 2020-01-07 | 黑龙江科技大学 | A multi-functional teaching aid for mathematical education usefulness |
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| Publication number | Publication date |
|---|---|
| CN108638711B (en) | 2019-11-29 |
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