CN107808569A - It is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating - Google Patents
It is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating Download PDFInfo
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- CN107808569A CN107808569A CN201711463896.7A CN201711463896A CN107808569A CN 107808569 A CN107808569 A CN 107808569A CN 201711463896 A CN201711463896 A CN 201711463896A CN 107808569 A CN107808569 A CN 107808569A
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- square frame
- pulley
- pulley element
- rotating disk
- demonstrating
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
- G09B23/04—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics for geometry, trigonometry, projection or perspective
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Algebra (AREA)
- Business, Economics & Management (AREA)
- Geometry (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Toys (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to it is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating, including rotating disk and support, be fixed with the first square frame, the second square frame and the 3rd square frame on front side of rotating disk；First square frame is fixed frame, and the second square frame and the 3rd square frame are the adjustable movable frame of the length of side, and electromagnet is additionally provided with rear side of rotating disk.The Pythagorean theorem apparatus for demonstrating of the present invention, it can easily realize that the length of side adjusts, can preferably inspire student thought, increase the learning interest of student.
Description
Technical field
The present invention relates to teaching equipment field, particularly it is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating.
Background technology
Notification number is that CN206480243U Chinese patent application discloses a kind of Pythagorean theorem apparatus for demonstrating, for hooking stock
The teaching of theorem.Its general principle is that a, b, c in a2+b2=c2 are corresponded to the area of corresponding length of side pros row, and in the length of side
For water filling in a, b two squares, the water in two squares is then set to flow into the square that the length of side is c, so as to prove
Pythagorean theorem.
Three square flat water tanks are arranged on a rotating disk, and three inclined flat water tanks of square pass through it is corresponding
While connect into a right angled triangle, so as to student with intuitively impression；And rotating disk can be in perpendicular inward turning
Turned, for the square that the length of side is c when upper, water is in the square that the length of side is a, b, and when square that the length of side is c is under, water flows into
The length of side is c square, and rotating rotating disk can complete to test, and use is also more convenient.
But above-mentioned demonstrator has some defects, including：Fixed a, b, c are only able to display, the length of side is to be adjusted
, the heavier student of curiosity can not be met, be unfavorable for further inspiring the interest and intelligence of student.
The content of the invention
It is existing for solving it is an object of the invention to provide a kind of Pythagorean theorem demonstration instrument that can realize length of side adjustment
The problem of Pythagorean theorem demonstration instrument deckle is long.
The solution of the present invention includes：
It is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating, including rotating disk and support, be fixed with the first square on front side of rotating disk
Framework, the second square frame and the 3rd square frame；First square frame is fixed frame, the second square frame and
3rd square frame is the adjustable movable frame of the length of side, and the second square frame is by four pulley elements A, B, C, D and is wound on
Band on four pulley elements is formed；Second square is by four pulley elements E, F, G, H and is wound on four pulley elements
Band form；Pulley element A is fixed on a summit on first the first side of square frame, and pulley element E is fixed on first
Another summit on the side of square frame first；Pulley element D is on a track is slidedly assemblied in, and the track and first is just
First side of quadra is vertically arranged；Pulley element E also in slidable fit on the track；Pulley element B, C, F, G are
The pulley element that can be moved freely on rotating disk, and pulley element B, C, F, G have magnetic, and difference is set on rear side of the rotating disk
With pulley element B, C, F, G relative to magnet block；Electromagnet is additionally provided with rear side of rotating disk；One is installed between pulley element D, E
Fixed plate, fixed plate one end fixed block cells D, other end fixed block unit E.
Further, the pulley element includes right angle seat and pulley, and pulley rotation is assemblied on right angle seat, and band is set
Between right angle seat and pulley.
Further, described pulley element A, H right angle seat also have through hole.
Further, the apparatus for demonstrating also include be used for arrange with the first square frame, the second square frame or
Magnetic ball in 3rd square frame.
The Pythagorean theorem apparatus for demonstrating of the present invention, it can easily realize that the length of side adjusts, can preferably inspire students ' thinking
Dimension, increase the learning interest of student.Education of the present invention except can be used for Mathematics Discipline, can be also used for Financial Management, wealth
The multi-disciplinary education and instruction such as meeting, physics, geography, machinery, material, electrical engineering.
Brief description of the drawings
Fig. 1 is the structure chart of the present invention（Front side）；
Fig. 2 is pulley element A structure chart；
Fig. 3 is pulley element B structure chart；
Fig. 4 is length of side adjustment schematic diagram；
Fig. 5 is the band schematic diagram with space；
Fig. 6 is Switching Power Supply schematic diagram.
Embodiment
In order to realize that the length of side can adjust, basic ideas of the invention are the flexible materials by adjustable length come shape
Substitute water into square frame structure, while with solid ball, will in order to ensure that solid ball can be fixed on rotating disk, flowed
The material selection of solid ball is soft magnetic material, so as to form magnetic ball, and can adsorb magnetic in the opposite side installation of rotating disk
The electromagnet of property ball.
It is specifically described below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figure 1, a is a fixed square frame, b, c are the square frame of the adjustable length of side.1 is rotating disk, 2
Frame, rotating disk 1 can rotate around support.On the structure of rotating disk 1 and support 2, the technological means of prior art can be used, herein
Repeat no more.
C frameworks are made up of four pulley elements A, B, C, D and the band being wound on four pulley elements, and band can use
Carbon steel, thickness 0.4-0.5cm, i.e., essentially identical with the chi bar material of tape measure, thickness ratio band tape is thicker, ensures that it is not easy
Flexural deformation.As shown in Fig. 2 including a right angle seat 61, pulley rotation is assemblied on right angle seat 61 pulley element A structure,
Band is arranged between pulley and right angle seat 61.The pulley element is fixed on a summit on a frame vertical straights side, and band is from head
It is continuous to hold to end, i.e., according to 31,32,33,34,30 order.Pulley element A secures one end of band 31, and bar
Passed with 34 end from a through hole of pulley element A right angle seat 61, as band 30.Pulley element B, C, D are
The pulley element that can be moved on the turntable 1, wherein B, C can be moved arbitrarily, and D can only move along track 50.Pulley list
As shown in figure 3, also including a right angle seat 60, pulley is arranged on right angle seat 60 for first B structure, band be arranged on pulley with it is straight
Between angled seat 60.Pulley element C, D structure are identical with pulley element B mechanism, and simply right angle seat is assemblied in corresponding to pulley D
On track 50, it is only capable of along the guiding movement of track 50.
Band 31,32,33,34,30 passes through pulley element A, B, C, D successively, can be by adjusting pulley element B, C, D
Position and take out, tie rod end of tape 30 realize square frame c the length of side adjustment.Scale
B frame structures are identical with c frame structures, also by four pulley elements E, F, G, H and are wound on four pulley elements
Band 41,42,43,40 form, band is continuous, is 41,42,43,40 successively from head end to end.Pulley element H's
Structure is identical with pulley element A, and H is fixed on another summit on a frame vertical straights side, i.e., is in one together with summit where A
Bar side, and track 50 is vertical with the side.Pulley element E structures are identical with pulley element D, and pulley element E be also only capable of along
The guiding movement of track 50.Pulley element F, G are identical with pulley element B, C-structure.Band 41,42,43,44,40 is successively by sliding
Wheel unit E, F, G, H, can by adjust pulley element E, F, G position and take out, tie rod end of tape 30 realizes square frame c
The length of side adjustment.
Only difference is that band 41 can also be set along track 50, it is easier to form the square of standard.
Due to the actual always synchronization action of pulley element D, E, relative position is constant, therefore can be by pulley element D, E
Right angle seat is fixedly connected.
In pulley element A-H, A, H can be directly anchored on rotating disk 1 by right angle seat.D, E right angle seat can be with rail
The slidable fit of road 50.For B, C, F, G, their right angle seat can be formed with magnetic material, and on rear side of rotating disk with B,
C, also it is correspondingly arranged for fixed magnet block on F, G corresponding position.When needing to move B, C, F, G, on rear side of rotating disk
Magnet block is removed, it is necessary to when fixed B, C, F, G, then magnet block is put on relevant position, passes through the suction of right angle seat and magnet block
The effect of drawing so that B, C, F, G are fixed on rotating disk 1.
In addition, the rear side of rotating disk 1 is also equipped with an electromagnet, the magnetic field of electromagnet should be able to cover whole rotating disk area substantially
Domain.
When testing, magnetic ball will be paved with a, b framework, and is powered to electromagnet, makes magnetic ball absorption in rotating disk
On.Then rotating disk 1 is rotated so that c frameworks are below, and are now reduced the electric current of electromagnet, magnetic ball is adsorbed in rotating disk
On, while enable a person to easier remove magnetic ball again, it is put into c frameworks.It should be able to finally see that experimental result is a, b
All magnetic balls in framework can be all put into c frameworks just, so as to the Pythagorean theorem proved.
When needing to adjust the length of side of b, c framework, it is adjusted according to approach presented above, as shown in figure 4, dotted line
Represent original position.
Pulley element D, E slide to the right the restriction effect of the projection 51 by the right-hand member of track 50, to the right in sliding process
Position no more than 51.
Embodiment 2
, it is necessary to which magnetic ball is put into the first square frame, the second square frame or the 3rd square-shaped frame manually in embodiment 1
In frame.
In the present embodiment, there is provided the mode in a kind of framework that magnetic ball can be made to roll into needs automatically.With square-shaped frame
Exemplified by frame c, as shown in figure 5, the structure of the band 34 between pulley element A, D has space, it has been made between space more
Individual blocking teeth, such as 341,342,343, blocking teeth is arranged at intervals, and the space between blocking teeth can roll across magnetic ball.Blocking teeth
Magnetic ball can be avoided to roll too fast.In order to ensure that band 34 carries space, the end of band 31,32,33,34,30 can be surpassed
Crossing the part of a quarter has such as Fig. 5 structure, and remainder does not have space, avoids magnetic ball from rolling out square frame area
Domain.
Similarly, the part that square frame b can also be arranged such that between HE is arranged to space.
Embodiment 3
The present embodiment and the difference of embodiment 1 or embodiment 2 are, operate for convenience, can pass through electromagnet by regulation
Electric current to change magnetic field strong and weak.A kind of circuit for the purposes is as shown in fig. 6, AC power, transformation including being sequentially connected
Device T, commutation diode D1 and triode Q, transistor base connect a biasing circuit, and biasing circuit includes the resistance R of series connection
It is in parallel with an electric capacity C with voltage-stabiliser tube D2, biasing circuit.When providing trigger pulse, triode ON, trigger pulse is closed
When, triode cut-off, so as to by control triode produce the adjustable direct current of size, for change magnetic field power, side
Just rolling resistance of the magnetic ball on rotating disk is controlled.
Embodiment 4
It is equal so as to forming standard to adjust each length of side of b, c framework by stretching 30,40 in each embodiment above
Square.But rely solely on vision and be sometimes not easy to be adjusted.For the ease of adjusting the equal shape of each length of side of b, c framework
Into the square of standard, scale can will be marked on band, forms chi bar.By calibrating, easily make each length of side equal.
Embodiment 5
In above example, track 50 has a projection in one end away from the first square frame a vertical edges, for stopping
Pulley element D, E movement.Can also actually be not provided with the projection, and pulley element D, E and the first square frame a it
Between draw a drawstring, such D, E also cannot exceed drawstring length.
As other embodiment, raised or drawstring can also be not provided with, D, E is freely adjusted.
Embodiment 6
In above example, pulley element D, E are moved respectively.And due to the actual movement locus of D, E be it is synchronous, therefore,
In the present embodiment, a fixed plate is installed between pulley element D, E, D is fixed in fixed plate one end, the other end fixes E, such D,
E cans are synchronized with the movement.
Claims (4)
1. it is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating, including rotating disk and support, it is characterised in that fixed on front side of rotating disk
There are the first square frame, the second square frame and the 3rd square frame；First square frame is fixed frame, second
Square frame and the 3rd square frame are the adjustable movable frame of the length of side, the second square frame by four pulley element A,
B, C, D and the band being wound on four pulley elements are formed；Second square is by four pulley elements E, F, G, H and is wound on four
Band on pulley element is formed；Pulley element A is fixed on a summit on first the first side of square frame, pulley element H
It is fixed on another summit on first the first side of square frame；Pulley element D is on a track is slidedly assemblied in, the rail
First side in road and the first square frame is vertically arranged；Pulley element E also in slidable fit on the track；Pulley element
B, C, F, G are the pulley element that can be moved freely on rotating disk, and pulley element B, C, F, G have magnetic, after the rotating disk
Side set respectively with pulley element B, C, F, G relative to magnet block；Electromagnet is additionally provided with rear side of rotating disk；Pulley element D, E it
Between install a fixed plate, fixed plate one end fixed block cells D, other end fixed block unit E.
2. it is according to claim 1 it is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating, it is characterised in that the pulley
Unit includes right angle seat and pulley, and pulley rotation is assemblied on right angle seat, and band is arranged between right angle seat and pulley.
3. it is according to claim 2 it is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating, it is characterised in that the pulley
Unit A, H right angle seat also have through hole.
4. it is according to claim 2 it is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating, it is characterised in that the demonstration
Device also includes being used to arrange and the magnetic ball in the first square frame, the second square frame or the 3rd square frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017218650747 | 2017-12-27 | ||
| CN201721865074 | 2017-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107808569A true CN107808569A (en) | 2018-03-16 |
Family
ID=61590080
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711463895.2A Withdrawn CN107967845A (en) | 2017-12-27 | 2017-12-28 | A kind of Pythagorean theorem demonstration instrument for teaching |
| CN201711463896.7A Withdrawn CN107808569A (en) | 2017-12-27 | 2017-12-28 | It is a kind of can synchronous adjustment Pythagorean theorem apparatus for demonstrating |
| CN201711463898.6A Withdrawn CN107967846A (en) | 2017-12-27 | 2017-12-28 | A kind of Pythagorean theorem apparatus for demonstrating that can moderately adjust |
| CN201711465981.7A Withdrawn CN107818716A (en) | 2017-12-27 | 2017-12-28 | A kind of Pythagorean theorem apparatus for demonstrating |
| CN201711460571.3A Expired - Fee Related CN108109484B (en) | 2017-12-27 | 2017-12-28 | Pythagorean theorem demonstration device capable of being adjusted in proper amount |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711463895.2A Withdrawn CN107967845A (en) | 2017-12-27 | 2017-12-28 | A kind of Pythagorean theorem demonstration instrument for teaching |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711463898.6A Withdrawn CN107967846A (en) | 2017-12-27 | 2017-12-28 | A kind of Pythagorean theorem apparatus for demonstrating that can moderately adjust |
| CN201711465981.7A Withdrawn CN107818716A (en) | 2017-12-27 | 2017-12-28 | A kind of Pythagorean theorem apparatus for demonstrating |
| CN201711460571.3A Expired - Fee Related CN108109484B (en) | 2017-12-27 | 2017-12-28 | Pythagorean theorem demonstration device capable of being adjusted in proper amount |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN107967845A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885795A (en) * | 1956-09-26 | 1959-05-12 | Herbert J Feldhake | Device for physically demonstrating the pythagorean theorem |
| CN101465080A (en) * | 2008-11-13 | 2009-06-24 | 姜佳男 | Popular science experimental method for checking pythagorean proposition |
| CN201281903Y (en) * | 2008-09-17 | 2009-07-29 | 张延东 | Demonstration board for Pythagorean proposition |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4315097B2 (en) * | 2004-11-19 | 2009-08-19 | サンケン電気株式会社 | Switching power supply |
| CN201213040Y (en) * | 2008-05-12 | 2009-03-25 | 魏悦真 | Circular electronic teaching instrument |
| CN201946174U (en) * | 2011-03-17 | 2011-08-24 | 颜廷甫 | Parallelogram demonstrator for teaching |
| CN102214996B (en) * | 2011-05-03 | 2013-09-04 | 深圳可立克科技股份有限公司 | Micro-voltage-difference linear voltage-stabilizing power circuit |
| CN103280139A (en) * | 2013-06-05 | 2013-09-04 | 苏州黑豆软件科技有限公司 | Instrument for demonstrating Pythagorean theorem |
| CN107901673A (en) * | 2017-12-27 | 2018-04-13 | 马来勋 | A kind of blackboard for teaching component |
-
2017
- 2017-12-28 CN CN201711463895.2A patent/CN107967845A/en not_active Withdrawn
- 2017-12-28 CN CN201711463896.7A patent/CN107808569A/en not_active Withdrawn
- 2017-12-28 CN CN201711463898.6A patent/CN107967846A/en not_active Withdrawn
- 2017-12-28 CN CN201711465981.7A patent/CN107818716A/en not_active Withdrawn
- 2017-12-28 CN CN201711460571.3A patent/CN108109484B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885795A (en) * | 1956-09-26 | 1959-05-12 | Herbert J Feldhake | Device for physically demonstrating the pythagorean theorem |
| CN201281903Y (en) * | 2008-09-17 | 2009-07-29 | 张延东 | Demonstration board for Pythagorean proposition |
| CN101465080A (en) * | 2008-11-13 | 2009-06-24 | 姜佳男 | Popular science experimental method for checking pythagorean proposition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107967846A (en) | 2018-04-27 |
| CN108109484A (en) | 2018-06-01 |
| CN107818716A (en) | 2018-03-20 |
| CN108109484B (en) | 2021-06-22 |
| CN107967845A (en) | 2018-04-27 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180316 |
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| WW01 | Invention patent application withdrawn after publication |