CN211441747U - Combined math teaching aid for drawing on blackboard - Google Patents
Combined math teaching aid for drawing on blackboard Download PDFInfo
- Publication number
- CN211441747U CN211441747U CN201922267676.8U CN201922267676U CN211441747U CN 211441747 U CN211441747 U CN 211441747U CN 201922267676 U CN201922267676 U CN 201922267676U CN 211441747 U CN211441747 U CN 211441747U
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- Prior art keywords
- teaching aid
- connecting plate
- blackboard
- guide
- sliding groove
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- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010422 painting Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000011017 operating method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a combined mathematical teaching aid for drawing on blackboard, including teaching aid host computer shell, two sliding trays have been seted up on the surface of teaching aid host computer shell, and two sliding trays are horizontal sliding tray and vertical sliding tray respectively, and the length of vertical sliding tray is greater than horizontal sliding tray, and two sliding trays criss-cross form the cross spout, and slidable mounting has a guiding mechanism in the cross spout; the guide mechanism comprises teaching aid guide rods, guide blocks, a first connecting plate, a second connecting plate, a fastening threaded rod and a clamp limiting rod, wherein the number of the guide blocks is two, the two guide blocks are rotatably connected with the teaching aid guide rods, and part openings are formed in the surfaces of the teaching aid guide rods; the utility model discloses, drawing the in-process, sliding motion can be to a connecting plate, No. two connecting plates on the teaching aid guide bar to change oval size, convenient and fast more can directly use the blackboard eraser on the teaching aid mainframe shell to erase when drawing the error appearing, saves the operation of the change instrument of making a round trip, and is comparatively practical.
Description
Technical Field
The utility model belongs to the technical field of the mathematics teaching aid, specifically a combination formula mathematics teaching aid for drawing on the blackboard.
Background
Mathematics teaching aid mainly includes abacus, scale, slide rule, for mathematical education's auxiliary type instrument, helps the user to accomplish relevant figure and draws, often includes the circular drawing in the figure is drawn, and the compasses instrument is often used in circular drawing, rotates through utilizing the compasses and draws circularly, and oval drawing often uses fixed oval mould, draws the pen and draws the ellipse through the injecture of oval mould mouth according to the mould mouth.
The current mathematics teaching aid still has certain drawback when using, receives the oval mould restraint, and an oval mould can only draw the ellipse of a size of a dimension, can not adjust according to the demand to when drawing the mistake, need put down the instrument, take up the blackboard eraser again and erase, increased the operating procedure, convenient saving trouble inadequately brings certain inconvenience for the user.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the mathematics teaching aid is restricted by the oval mould, an oval mould can only draw the ellipse of a size of a dimension, can not adjust according to the demand to when drawing the mistake, need put the instrument down, take up the blackboard eraser again and erase, increased the operating procedure, the problem of convenient saving trouble is not enough, and a combination formula mathematics teaching aid that is used for drawing on the blackboard is provided.
The purpose of the utility model can be realized by the following technical scheme:
a combined type math teaching aid for drawing on a blackboard comprises a teaching aid host shell, wherein two sliding grooves are formed in the surface of the teaching aid host shell, the two sliding grooves are respectively a transverse sliding groove and a vertical sliding groove, the length of the vertical sliding groove is larger than that of the transverse sliding groove, the two sliding grooves are criss-cross to form a cross sliding groove, and a guide mechanism is slidably mounted in the cross sliding groove;
guiding mechanism includes teaching aid guide bar, guide block, a connecting plate, No. two connecting plates, fastening threaded rod, clamp gag lever post, the quantity of guide block is two and all rotates with the teaching aid guide bar to be connected, the part mouth has been seted up on the surface of teaching aid guide bar, a connecting plate, No. two connecting plates pass through pivot slidable mounting in the part mouth of teaching aid guide bar, fastening threaded rod is rotatory simultaneously and installs in the screw hole of a connecting plate, No. two connecting plates, a connecting plate passes through fastening threaded rod with No. two connecting plates and is connected fixedly, and the one end of fastening threaded rod rotates and installs the clamp gag lever post, the clamp gag lever post is the arc.
Furthermore, the side of the teaching aid mainframe shell is provided with an eraser groove, and a blackboard assembly is inserted into the eraser groove.
Further, the blackboard assembly comprises a blackboard eraser, a blackboard eraser plastic box, a pressure spring and a limiting block, wherein the fixed end of the pressure spring is fixedly connected with the blackboard eraser plastic box, the movable end of the pressure spring is connected with the limiting block, and the limiting block is circular.
Furthermore, a limiting hole is formed in the upper end of the teaching aid main case, and the aperture size of the limiting hole is larger than the diameter size of the limiting block.
Further, the lower extreme fixedly connected with slipmat of teaching aid mainframe shell, and the quantity of slipmat be four, the slipmat is parallel placement respectively.
The utility model has the advantages that:
1. a connecting plate, No. two connecting plates all with teaching aid guide bar sliding connection, a connecting plate internal rotation installation fastening threaded rod, fastening threaded rod's end is rotated installation clamp gag lever post, place the painting brush between clamp gag lever post and No. two connecting plates, further rotate right fastening threaded rod this moment, make its No. two connecting plate position departments in phase further press close to, exert pressure on the painting brush until the clamp gag lever post, play fixed effect to the painting brush, in the drawing in-process, a connecting plate, No. two connecting plates can be sliding motion on the teaching aid guide bar, thereby change oval size, convenient and fast more.
2. The blackboard eraser plastic box is inserted into the blackboard eraser groove of the teaching aid mainframe shell, the pressure spring is pressed and deformed in the blackboard eraser groove, when the limiting block moves to the position of the limiting hole, the limiting block is jacked up by the pressure spring and moves into the limiting hole, the limiting fixing effect on the blackboard eraser is achieved, and when a user presses the limiting block again, the blackboard eraser can be taken out to be cleaned and replaced.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the clamp limiting rod of the present invention;
fig. 3 is a schematic diagram of the stopper of the present invention.
In the figure: 1. a teaching aid main case; 2. a sliding groove; 3. fastening a threaded rod; 4. a first connecting plate; 5. a teaching aid guide rod; 6. a second connecting plate; 7. a non-slip mat; 8. a blackboard eraser; 9. a guide block; 10. a clamp limiting rod; 11. a blackboard eraser plastic box; 12. a pressure spring; 13. and a limiting block.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, a combined type math teaching aid for drawing on a blackboard comprises a teaching aid host shell, wherein two sliding grooves 2 are formed in the surface of the teaching aid host shell 1, the two sliding grooves 2 are respectively a transverse sliding groove and a vertical sliding groove, the length of the vertical sliding groove is larger than that of the transverse sliding groove, the two sliding grooves 2 are criss-cross to form a cross sliding groove, and a guide mechanism is slidably mounted in the cross sliding groove;
guiding mechanism includes teaching aid guide bar 5, guide block 9, a connecting plate 4, No. two connecting plates 6, fastening threaded rod 3, clamp gag lever post 10, guide block 9's quantity is two and all rotates with teaching aid guide bar 5 to be connected, the part mouth has been seted up on teaching aid guide bar 5's surface, a connecting plate 4, No. two connecting plates 6 are through pivot slidable mounting in teaching aid guide bar 5's part mouth, fastening threaded rod 3 rotatory installation is in connecting plate 4 simultaneously, No. two connecting plates 6's screwed hole, connecting plate 4 is connected fixedly through fastening threaded rod 3 with No. two connecting plates 6, and fastening threaded rod 3's one end is rotated and is installed clamp gag lever post 10, clamp gag lever post 10 is the arc.
The side surface of the teaching aid main machine shell 1 is provided with an eraser groove, and a blackboard assembly is inserted into the eraser groove; the blackboard assembly comprises a blackboard eraser 8, a blackboard eraser plastic box 11, a pressure spring 12 and a limiting block 13, wherein the fixed end of the pressure spring 12 is fixedly connected with the blackboard eraser plastic box 11, the movable end of the pressure spring 12 is connected with the limiting block 13, and the limiting block 13 is circular; the upper end of the teaching aid main case 1 is provided with a limiting hole, and the aperture size of the limiting hole is larger than the diameter size of the limiting block 13; teaching aid mainframe shell 1's lower extreme fixedly connected with slipmat 7, and the quantity of slipmat 7 is four, and slipmat 7 is parallel placement respectively.
A combined type math teaching aid for drawing on a blackboard is characterized in that when the combined type math teaching aid is used, two sliding grooves 2 are formed in the surface of a teaching aid host shell 1, the two sliding grooves 2 are respectively a transverse sliding groove and a vertical sliding groove, the length of the vertical sliding groove is larger than that of the transverse sliding groove, the two sliding grooves 2 are criss-cross to form a cross sliding groove, a teaching aid guide rod 5 is rotatably connected with guide blocks 9, the two guide blocks 9 are respectively positioned in the transverse sliding groove and the vertical sliding groove, when the teaching aid guide rod 5 rotates, the two guide blocks 9 respectively move transversely and longitudinally, a painting brush on the teaching aid guide rod 5 draws a figure according to the movement direction of the guide blocks 9 when the teaching aid guide rod moves, because the length of the vertical sliding groove is larger than that of the transverse sliding groove, when one circle of rotation is completed, an oval shape is formed, a first connecting plate 4, a fastening threaded rod 3 is rotatably installed in a first connecting plate 4, a hoop limiting rod 10 is rotatably installed at the tail end of the fastening threaded rod 3, a painting brush is placed between the hoop limiting rod 10 and a second connecting plate 6, the fastening threaded rod 3 further rotates rightwards at the moment to enable the position of the fastening threaded rod to be further close to the position of the second connecting plate 6 until the hoop limiting rod 10 presses on the painting brush, the painting brush is fixed, the first connecting plate 4 and the second connecting plate 6 can slide on a teaching aid guide rod 5 in the drawing process, the size of an ellipse is changed, the blackboard eraser is more convenient and rapid, a blackboard eraser plastic box 11 is inserted into a blackboard eraser groove of a teaching aid main machine shell 1, a pressure spring 12 is pressed and deformed in the blackboard eraser groove, when the limiting block 13 moves to the position of a limiting hole, the limiting block 13 is jacked by the pressure spring 12 to move into the limiting hole, and the limiting and fixing effect on the blackboard eraser 8 is achieved, when the user presses the limiting block 13 again, the blackboard eraser 8 can be taken out for cleaning and replacement.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.
Claims (5)
1. The combined type math teaching aid for drawing on the blackboard is characterized by comprising a teaching aid main case (1), wherein two sliding grooves (2) are formed in the surface of the teaching aid main case (1), the two sliding grooves (2) are respectively a transverse sliding groove and a vertical sliding groove, the length of the vertical sliding groove is larger than that of the transverse sliding groove, the two sliding grooves (2) are criss-cross to form a cross sliding groove, and a guide mechanism is slidably mounted in the cross sliding groove;
the guide mechanism comprises a teaching aid guide rod (5), a guide block (9), a first connecting plate (4), a second connecting plate (6), a fastening threaded rod (3) and a clamp limiting rod (10), the number of the guide blocks (9) is two, the two guide blocks are rotatably connected with the teaching aid guide rod (5), the surface of the teaching aid guide rod (5) is provided with a part opening, the first connecting plate (4) and the second connecting plate (6) are slidably arranged in the part opening of the teaching aid guide rod (5) through a rotating shaft, the fastening threaded rod (3) is simultaneously and rotatably arranged in the threaded holes of the first connecting plate (4) and the second connecting plate (6), the first connecting plate (4) and the second connecting plate (6) are fixedly connected through a fastening threaded rod (3), and one end of the fastening threaded rod (3) is rotatably provided with a clamp limiting rod (10), and the clamp limiting rod (10) is arc-shaped.
2. The combined type mathematics teaching aid for drawing on blackboard according to claim 1, characterized in that the side of the teaching aid main frame shell (1) is equipped with blackboard eraser groove, in which blackboard assembly is inserted.
3. The combined type mathematics teaching aid for drawing on blackboard according to claim 2, characterized in that the blackboard subassembly includes blackboard eraser (8), blackboard eraser plastic box (11), compression spring (12), stopper (13), the stiff end and the blackboard eraser plastic box (11) fixed connection of compression spring (12), the expansion end and the stopper (13) of compression spring (12) are connected, and stopper (13) are circular.
4. The combined type mathematics teaching aid for drawing on blackboard according to claim 3, characterized in that the upper end of the teaching aid main case (1) is provided with a spacing hole, the aperture size of which is larger than the diameter size of the limiting block (13).
5. The combined type mathematics teaching aid for drawing on blackboard according to claim 1, characterized in that the lower end of the teaching aid main case (1) is fixedly connected with anti-skid pads (7), and the number of anti-skid pads (7) is four, the anti-skid pads (7) are respectively placed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922267676.8U CN211441747U (en) | 2019-12-17 | 2019-12-17 | Combined math teaching aid for drawing on blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922267676.8U CN211441747U (en) | 2019-12-17 | 2019-12-17 | Combined math teaching aid for drawing on blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211441747U true CN211441747U (en) | 2020-09-08 |
Family
ID=72310757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922267676.8U Expired - Fee Related CN211441747U (en) | 2019-12-17 | 2019-12-17 | Combined math teaching aid for drawing on blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211441747U (en) |
-
2019
- 2019-12-17 CN CN201922267676.8U patent/CN211441747U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200908 |
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| CF01 | Termination of patent right due to non-payment of annual fee |