CN209336345U - A kind of new type blackboard drawing tool convenient for mathematical education - Google Patents
A kind of new type blackboard drawing tool convenient for mathematical education Download PDFInfo
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- CN209336345U CN209336345U CN201822180213.3U CN201822180213U CN209336345U CN 209336345 U CN209336345 U CN 209336345U CN 201822180213 U CN201822180213 U CN 201822180213U CN 209336345 U CN209336345 U CN 209336345U
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- cylinder
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- drawing tool
- mathematical education
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Abstract
The utility model provides a kind of new type blackboard drawing tool convenient for mathematical education, it is related to teaching equipment technical field, this is convenient for the new type blackboard drawing tool of mathematical education, including annulus column, the inside of annulus column is fixedly installed with bearing, the outer ring of bearing is fixedly attached to the inside of annulus column, the inside fixing sleeve of bearing inner race is connected to cylinder, the bottom end of cylinder is bonded with sucker, the internal activity of cylinder is socketed with piston, the top of piston is welded with portable pillar, the top of portable pillar is welded with plectane, plectane is located at the top of cylinder, it is fixedly connected between the bottom of plectane and the top of cylinder by spring, fixed plate is welded on the right side of annulus column, the external activity of fixed plate is socketed with movable sleeve, the front surface of movable sleeve is welded with fixing sleeve.This is convenient for the new type blackboard drawing tool of mathematical education, improves air pressure to the fixed effect between sucker and blackboard；The air pressure for improving cylinder interior can also be facilitated using cylinder cooperation piston, take off teacher very easily sucker can from blackboard after picture.
Description
Technical field
The utility model relates to teaching equipment technical field, specially a kind of new type blackboard mapping work convenient for mathematical education
Tool.
Background technique
During mathematical education, it is often necessary to draw, therefore corresponding occur on various blackboards on blackboard
The drawing tools used.
During picture, draws circle and need to use compasses, similarly will use compasses on blackboard, drawn on blackboard at present
The compasses that bowlder uses can be divided into two kinds according to fixed form, and one is being fixed by round needle, one is pass through sucker
It is fixed, the former can damage blackboard, and sliding is easy in drawing course, and causing to draw fails, and the latter is using
During convenient for fixing, but pulled up from blackboard very laborious after being finished, and draw circle when can not determine compasses bipod
It is accurate to open size, so that it is determined that drawing the radius of circle, need to be measured with ruler in advance, it is cumbersome.Therefore the application
It is proposed a kind of new-type teaching drawing tool.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of new type blackboard mapping work convenient for mathematical education
Tool solves the problems, such as that existing compasses are inconvenient during use.
(2) technical solution
To achieve the above object, the utility model provides the following technical solutions: a kind of new type blackboard convenient for mathematical education
Drawing tool, including annulus column, the inside of the annulus column are fixedly installed with bearing, and the outer ring of the bearing is fixedly attached to circle
The inside of annulated column, the inside fixing sleeve of the bearing inner race are connected to cylinder, carry out annulus column in the external of cylinder
Free rotation keeps teacher more convenient laborsaving when drawing circle, and the bottom end of the cylinder is bonded with sucker, and sucker is conventional
Sucker is made of rubber material, and circular hole is offered at the top of sucker, so that sucker is connected with the inside of cylinder, is made sucker
Air pressure with cylinder interior is consistent, and the internal activity of the cylinder is socketed with piston, and piston is adapted with the size of cylinder,
Cooperation principle between piston and cylinder is identical as the common syringe principle of people, and the top of the piston is welded with activity
Column, the top of the portable pillar are welded with plectane, and the plectane is located at the top of cylinder, the bottom of the plectane and the top of cylinder
It is fixedly connected between end by spring, spring plays the effect of reset, is when in use first fixed on sucker suitably
Position, then pressing plectane moves portable pillar and piston, so that piston is moved to the middle position of cylinder, at this moment spring
It will do it deformation and a part can be discharged in the air of cylinder interior, sucker and blackboard are fit together, plectane is unclamped, is utilized
The elastic force of spring makes plectane generate upward power, so that the space of cylinder interior be become larger, makes the reduction of its air pressure inside, in this way meeting
Make air pressure at sucker while reducing, the fixed effect improved between sucker and blackboard pulls down circle when needing to remove
Plate makes the volume of cylinder interior become smaller, so that the air pressure of sucker and cylinder interior be made to become larger, such air need from sucker with it is black
The junction of plate excludes, and sucker will be made to separate with blackboard, labour-saving can taken off sucker from blackboard very much in this way.
Fixed plate is welded on the right side of the annulus column, the external activity of the fixed plate is socketed with movable sleeve, the work
The front surface of dynamic set is welded with fixing sleeve, and the front surface of the fixing sleeve offers threaded hole, the spiral shell of the fixing sleeve front surface
The internal whorl of pit is socketed with bolt, and connecting plate is welded at the top of the movable sleeve, and the right end of the connecting plate is welded with
Nut, the internal whorl of the nut are socketed with threaded rod, and the bottom of the threaded rod and the top of fixed plate are corresponding, utilize
Bolt cooperates the threaded hole on fixing sleeve and fixing sleeve, and very easily chalk can be fixed, and is cooperated using bolt
Threaded hole on fixing sleeve, adjustable fixing sleeve inner space, facilitates the chalk that fixed diameter is different, utilizes connecting plate, spiral shell
Female and threaded rod can very easily be fixed the position of movable sleeve so that it is convenient to change picture diameter of a circle.
Preferably, ring-shaped handle is welded at the top of the plectane, the outside of the ring-shaped handle is bonded with non-slip mat, and
The shape size of non-slip mat is adapted with the shape size of ring-shaped handle, convenient to plectane applied force using ring-shaped handle, and
It is convenient to the center point applied force during picture, it is more convenient when so that teacher is taken.
Preferably, one end that the bolt is located inside fixing sleeve is bonded with valve rubber, the size and spiral shell of the valve rubber
The size of bolt is adapted, and valve rubber reduces abrasion of the bolt to chalk, in this way during fixed chalk, reduces chalk
Consumption, improve the service life of chalk.
Preferably, the bottom of the threaded rod is bonded with foam-rubber cushion, the size and the size phase of threaded rod of the foam-rubber cushion
Adaptation, can reduce the abrasion between threaded rod and fixed plate using foam-rubber cushion, improve the use longevity of threaded rod and fixed plate
Life, and after foam-rubber cushion squeezes, frictional force is very big, can firmly be fixed the position of movable sleeve in this way.
Preferably, swing handle is welded at the top of the threaded rod, the external fixing sleeve of the swing handle is connected to anti-
Skidding, it is convenient to threaded rod applied force using swing handle, facilitate teacher to rotate threaded rod.
Preferably, the front surface of the fixed plate has portrayed scale strip, and the scale strip is cm-level length unit, utilizes
Scale strip facilitates the position of adjustment movable sleeve, keeps the circular diameter drawn more accurate.
(3) beneficial effect
The utility model provides a kind of new type blackboard drawing tool convenient for mathematical education.Have it is following the utility model has the advantages that
(1), it should be convenient for the new type blackboard drawing tool of mathematical education during use, can using the elastic force of spring
To reduce the air pressure of cylinder and suction cup interior as far as possible, the air pressure between sucker and blackboard is made to become lower, to improve
To the fixed effect between sucker and blackboard, such teacher is less prone to round the problem of changing during drawing circle for air pressure；
And the air pressure for improving cylinder interior can also be facilitated using cylinder cooperation piston, so that the air pressure between sucker and blackboard be made to become
Height separates sucker very easily with blackboard, makes teacher can be very easily by sucker from blackboard after picture
It takes off.
(2), should in this way may be used convenient for the new type blackboard drawing tool of mathematical education by portraying scale strip in fixed plate
Accurately to draw very much sizeable circle, cooperates the ruler and set square of teaching in this way, can allow teacher on blackboard
It draws most close to figure on textbook, makes teacher during degrading topic, student can see more intuitive, improve teaching
Effect.
Detailed description of the invention
Fig. 1 is the positive structure diagram of the utility model；
Fig. 2 is the front broken section structural schematic diagram of cylinder in the utility model Fig. 1；
Fig. 3 is partial enlargement diagram at the A in the utility model Fig. 1；
Fig. 4 is the overlooking structure diagram of fixing sleeve in the utility model Fig. 3.
In figure: 1 annulus column, 2 bearings, 3 cylinders, 4 suckers, 5 pistons, 6 portable pillars, 7 plectanes, 8 springs, 9 ring-shaped handles, 10
Fixed plate, 11 scale strips, 12 movable sleeves, 13 fixing sleeves, 14 bolts, 15 valve rubbers, 16 connecting plates, 17 nuts, 18 threaded rods, 19
Foam-rubber cushion, 20 swing handles.
Specific embodiment
As shown in Figs 1-4, the utility model provides a kind of technical solution: a kind of new type blackboard mapping convenient for mathematical education
Tool, including annulus column 1, the inside of annulus column 1 are fixedly installed with bearing 2, and the outer ring of bearing 2 is fixedly attached to annulus column 1
Inside, the inside fixing sleeve of 2 inner ring of bearing are connected to cylinder 3, carry out annulus column 1 freely in the external of cylinder 3
Rotation keeps teacher more convenient laborsaving when drawing circle, and the bottom end of cylinder 3 is bonded with sucker 4, and sucker 4 is conventional sucker 4,
Be made of rubber material, and the top of sucker 4 offers circular hole, sucker 4 and the inside of cylinder 3 made to be connected, make sucker 4 with
Air pressure inside cylinder 3 is consistent, and the internal activity of cylinder 3 is socketed with piston 5, and piston 5 is adapted with the size of cylinder 3,
Cooperation principle between piston 5 and cylinder 3 is identical as the common syringe principle of people, and the top of piston 5 is welded with portable pillar
6, the top of portable pillar 6 is welded with plectane 7, and plectane 7 is located at the top of cylinder 3, between the bottom of plectane 7 and the top of cylinder 3
It is fixedly connected by spring 8, spring 8 plays the effect of reset, and sucker 4 is first fixed on suitable position when in use
It sets, then pressing plectane 7 moves portable pillar 6 and piston 5, so that piston 5 is moved to the middle position of cylinder 3, at this moment
Spring 8 will do it deformation and a part can be discharged in the air inside cylinder 3, and sucker 4 is fit together with blackboard, unclamps circle
Plate 7 makes plectane 7 generate upward power using the elastic force of spring 8, so that the space inside cylinder 3 be become larger, makes its air pressure inside
It reduces, air pressure at sucker 4 can be made in this way while being reduced, improve the fixed effect between sucker 4 and blackboard, when needs remove
It waits, pulls down plectane 7, the volume inside cylinder 3 is made to become smaller, to make sucker 4 become larger with the air pressure inside cylinder 3, in this way
Air needs to exclude from the junction of sucker 4 and blackboard, and sucker 4 will be made to separate with blackboard, will can inhale labour-saving very much in this way
Disk 4 is taken off from blackboard, and the top of plectane 7 is welded with ring-shaped handle 9, and the outside of ring-shaped handle 9 is bonded with non-slip mat, and anti-
The shape size of skidding is adapted with the shape size of ring-shaped handle 9, convenient to 7 applied force of plectane using ring-shaped handle 9, and
It is convenient to the center point applied force during picture, it is more convenient when so that teacher is taken.
The right side of annulus column 1 is welded with fixed plate 10, and the front surface of fixed plate 10 has portrayed scale strip 11, and scale strip 11 is
Cm-level length unit is facilitated the position of adjustment movable sleeve 12 using scale strip 11, keeps the circular diameter drawn more accurate, fixed
The external activity of plate 10 is socketed with movable sleeve 12, and the front surface of movable sleeve 12 is welded with fixing sleeve 13, the front surface of fixing sleeve 13
Threaded hole is offered, the internal whorl of the threaded hole of 13 front surface of fixing sleeve is socketed with bolt 14, and bolt 14 is located at fixing sleeve 13
Internal one end is bonded with valve rubber 15, and the size of valve rubber 15 is adapted with the size of bolt 14, and valve rubber 15 reduces spiral shell
Abrasion of the bolt 14 to chalk reduces the consumption of chalk in this way during fixed chalk, and improve chalk uses the longevity
Life, the top of movable sleeve 12 are welded with connecting plate 16, and the right end of connecting plate 16 is welded with nut 17, the internal whorl set of nut 17
It is connected to threaded rod 18, the bottom of threaded rod 18 is corresponding with the top of fixed plate 10, and the bottom of threaded rod 18 is bonded with foam-rubber cushion
19, the size of foam-rubber cushion 19 is adapted with the size of threaded rod 18, can reduce threaded rod 18 and fixed plate using foam-rubber cushion 19
Abrasion between 10 improves the service life of threaded rod 18 Yu fixed plate 10, and after foam-rubber cushion 19 squeezes, frictional force
It is very big, the position of movable sleeve 12 can firmly be fixed in this way, the top of threaded rod 18 is welded with swing handle 20, turns
The external fixing sleeve of dynamic handle 20 is connected to non-slip mat, convenient to 18 applied force of threaded rod using swing handle 20, and teacher is facilitated to turn
Dynamic threaded rod 18 cooperates the threaded hole on fixing sleeve 13 and fixing sleeve 13 using bolt 14, can very easily by chalk into
Row is fixed, and cooperates the threaded hole on fixing sleeve 13 using bolt 14, and adjustable 13 inner space of fixing sleeve facilitates fixed straight
The different chalk of diameter can be carried out very easily the position to movable sleeve 12 using connecting plate 16, nut 17 and threaded rod 18
It fixes so that it is convenient to change picture diameter of a circle.
Working principle: it is first that sucker 4 is fixed in place, then press plectane 7 make portable pillar 6 and piston 5 into
Row movement, makes piston 5 be moved to the middle position of cylinder 3, at this moment spring 8 will do it deformation and can be by the air inside cylinder 3
Discharge a part, sucker 4 is fit together with blackboard, is unclamped plectane 7, is generated plectane 7 using the elastic force of spring 8 upward
Power makes the reduction of its air pressure inside, can make air pressure at sucker 4 in this way while reduce so that the space inside cylinder 3 be become larger,
When needing to remove, plectane 7 is pulled down, the volume inside cylinder 3 is made to become smaller, to make the gas inside sucker 4 and cylinder 3
Buckling is big, and such air needs to exclude from the junction of sucker 4 and blackboard, and sucker 4 will be made to separate with blackboard.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of new type blackboard drawing tool convenient for mathematical education, including annulus column (1), it is characterised in that: the annulus column
(1) inside is fixedly installed with bearing (2), and the outer ring of the bearing (2) is fixedly attached to the inside of annulus column (1), the axis
The inside fixing sleeve for holding (2) inner ring is connected to cylinder (3), and the bottom end of the cylinder (3) is bonded with sucker (4), the cylinder (3)
Internal activity is socketed with piston (5), and the top of the piston (5) is welded with portable pillar (6), the top weldering of the portable pillar (6)
It is connected to plectane (7), the plectane (7) is located at the top of cylinder (3), between the bottom of the plectane (7) and the top of cylinder (3)
It is fixedly connected by spring (8)；
It is welded with fixed plate (10) on the right side of the annulus column (1), the external activity of the fixed plate (10) is socketed with movable sleeve
(12), the front surface of the movable sleeve (12) is welded with fixing sleeve (13), and the front surface of the fixing sleeve (13) offers screw thread
The internal whorl in hole, the threaded hole of fixing sleeve (13) front surface is socketed with bolt (14), the top of the movable sleeve (12)
It is welded with connecting plate (16), the right end of the connecting plate (16) is welded with nut (17), the internal whorl set of the nut (17)
It is connected to threaded rod (18), the bottom of the threaded rod (18) is corresponding with the top of fixed plate (10).
2. a kind of new type blackboard drawing tool convenient for mathematical education according to claim 1, it is characterised in that: the circle
It is welded at the top of plate (7) ring-shaped handle (9), the outside of the ring-shaped handle (9) is bonded with non-slip mat, and the shape of non-slip mat
Size is adapted with the shape size of ring-shaped handle (9).
3. a kind of new type blackboard drawing tool convenient for mathematical education according to claim 1, it is characterised in that: the spiral shell
Bolt (14) is located at the internal one end of fixing sleeve (13) and is bonded with valve rubber (15), the size of the valve rubber (15) and bolt (14)
Size be adapted.
4. a kind of new type blackboard drawing tool convenient for mathematical education according to claim 1, it is characterised in that: the spiral shell
The bottom of rasp bar (18) is bonded with foam-rubber cushion (19), and the size of the foam-rubber cushion (19) is adapted with the size of threaded rod (18).
5. a kind of new type blackboard drawing tool convenient for mathematical education according to claim 1, it is characterised in that: the spiral shell
It is welded at the top of rasp bar (18) swing handle (20), the external fixing sleeve of the swing handle (20) is connected to non-slip mat.
6. a kind of new type blackboard drawing tool convenient for mathematical education according to claim 1, it is characterised in that: described solid
The front surface of fixed board (10) has been portrayed scale strip (11), and the scale strip (11) is cm-level length unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822180213.3U CN209336345U (en) | 2018-12-25 | 2018-12-25 | A kind of new type blackboard drawing tool convenient for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822180213.3U CN209336345U (en) | 2018-12-25 | 2018-12-25 | A kind of new type blackboard drawing tool convenient for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209336345U true CN209336345U (en) | 2019-09-03 |
Family
ID=67758649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822180213.3U Expired - Fee Related CN209336345U (en) | 2018-12-25 | 2018-12-25 | A kind of new type blackboard drawing tool convenient for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209336345U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481211A (en) * | 2019-09-25 | 2019-11-22 | 王旭 | A kind of mathematical education drawing tool |
| CN112793340A (en) * | 2021-01-04 | 2021-05-14 | 桂林师范高等专科学校 | Rotatory curved surface mathematics teaching aid |
| CN113103806A (en) * | 2021-04-30 | 2021-07-13 | 重庆三峡学院 | Device is drawn with portable curve to mathematical education |
-
2018
- 2018-12-25 CN CN201822180213.3U patent/CN209336345U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481211A (en) * | 2019-09-25 | 2019-11-22 | 王旭 | A kind of mathematical education drawing tool |
| CN110481211B (en) * | 2019-09-25 | 2021-01-26 | 王旭 | Drawing tool for mathematical education |
| CN112793340A (en) * | 2021-01-04 | 2021-05-14 | 桂林师范高等专科学校 | Rotatory curved surface mathematics teaching aid |
| CN113103806A (en) * | 2021-04-30 | 2021-07-13 | 重庆三峡学院 | Device is drawn with portable curve to mathematical education |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190903 Termination date: 20201225 |