CN205929926U - Mathematics teaching instrument - Google Patents
Mathematics teaching instrument Download PDFInfo
- Publication number
- CN205929926U CN205929926U CN201620581771.9U CN201620581771U CN205929926U CN 205929926 U CN205929926 U CN 205929926U CN 201620581771 U CN201620581771 U CN 201620581771U CN 205929926 U CN205929926 U CN 205929926U
- Authority
- CN
- China
- Prior art keywords
- mounting groove
- bearing
- motor
- motor mounting
- support bar
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a mathematics teaching instrument, comprising a supporting bar, a fixed mounting bearing in the middle of the bracing piece surrounds the outer lane round and is equipped with a screw on this bearing inner race's the up end, a fixed mounting telescopic link on the outer lane of bearing, the bracing piece is located bearing upper end department and is equipped with a motor mounting groove, this motor mounting groove right side opening, a fixed mounting motor in the motor mounting groove, the pivot of this motor extends to the external world along the opening on motor mounting groove right side to a fixed mounting gear, this gear outer lane face is connected with the thread engagement of bearing up end. The utility model discloses simple structure, convenient to use, economic cost low, through the locating piece can increase with the area of contact of blackboard, has effectually prevented that sliding from appearing in the central point, and need not through the crooked drawing circle that just can be quick and complete of wrist, great increase the efficiency of giving a lesson.
Description
Technical field
This utility model is related to teaching field and in particular to a kind of mathematics teaching apparatus.
Background technology
At present in mathematical education, typically require during teachers ' teaching and use compasses, but bowlder drawn by present compasses, needs
Impart knowledge to students and central point is firmly fixed, once occurring sliding or tilting, the circle drawing will be imperfect, need to paint from newly
Draw, greatly waste the time attended class, and draw bowlder in teacher, need the bending wrist of teacher's 180 degree, but the handss of people are not
Can the bending in 180 degree, cause deviation occurs so as to draw round outside irregular during rotation.
Content of the invention
Technical problem to be solved in the utility model is to provide a kind of structure simple, easy to use, can be quick and complete
Draw the mathematics teaching apparatus of circle.
This utility model is achieved through the following technical solutions：A kind of mathematics teaching apparatus, including support bar, described
Fixed installation one bearing in the middle of strut, on the upper surface of this bearing outer ring, around outer ring one, circle is provided with a screw thread, the outer ring of bearing
Upper fixed installation one expansion link, described support bar is provided with a motor mounting groove positioned at bearing upper end, on the right side of this motor mounting groove
Opening, fixed installation one motor in described motor mounting groove, the rotating shaft of this motor opening on the right side of motor mounting groove extends
To the external world, and fixedly mount a gear, this gear outer ring face is connected with the screw thread engagement of bearing upper surface.
Preferably, described support bar is provided with a battery settling groove positioned at motor mounting groove upper end, this battery settling groove
Right openings, fixedly mount a cover plate by hinge at battery settling groove right openings, are provided with a storage in described motor mounting groove
Battery.
Preferably, described post upper fixedly mounts one handle, this handle fixedly mounts a controlling switch, this control
The outfan of system switch is connected with motor and accumulator respectively by electric wire.
Preferably, fixedly mounting a positioning block on described support bar lower surface, this locating piece is by transparent safety glass
Make, locating piece lower surface is provided with a skid resistant course, this skid resistant course is made up of transparent elastomeric material.
Preferably, fixedly mounting a fixed block on described expansion link one end, this fixed block lower end fixedly mounts a chalk
Set, this chalk sleeve is inserted into a chalk.
Preferably, being provided with a containment vessel outside described gear, the L-shaped structure setting of this containment vessel, this containment vessel one
End is fixedly connected with support bar.
The beneficial effects of the utility model are：This utility model structure is simple, and easy to use, Financial cost is low, by fixed
Position block can increase the contact area with blackboard, be effectively prevented central point and occur sliding, and need not be by wrist flex with regard to energy
Quick and complete picture circle, greatly increased the efficiency attended class.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the connection diagram of gear of the present utility model and screw thread.
Specific embodiment
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), except non-specifically is chatted
State, all can be replaced by other alternative features equivalent or that there is similar purpose.I.e., unless specifically stated otherwise, each feature
It is a series of equivalent or one of similar characteristics example.
As depicted in figs. 1 and 2, a kind of mathematics teaching apparatus of the present utility model, including support bar 6, in the middle of described support bar 6
Fixedly mount a bearing 11, on the upper surface of this bearing 11 outer ring, circle is provided with a screw thread 18, the outer ring of bearing 11 around outer ring one
Upper fixed installation one expansion link 12, described support bar 6 is provided with a motor mounting groove 8 positioned at bearing 11 upper end, and this motor is installed
Groove 8 right openings, fixed installation one motor 7 in described motor mounting groove 8, the rotating shaft of this motor 7 is on the right side of motor mounting groove 8
Opening extend to the external world, and fixedly mount a gear 10, this gear 10 outer ring face is engaged with the screw thread of bearing 11 upper surface even
Connect.
In the present embodiment, described support bar 6 is provided with a battery settling groove 5 positioned at motor mounting groove 8 upper end, and this battery is pacified
Tankage 5 right openings, fixedly mount a cover plate 3 by hinge at battery settling groove 5 right openings, in described motor mounting groove 5
It is provided with an accumulator 4.
In the present embodiment, described support bar 6 upper end fixedly mounts one handle 2, and this handle 2 fixedly mounts a controlling switch
1, the outfan of this controlling switch 1 is connected with motor 7 and accumulator 4 respectively by electric wire.
In the present embodiment, described support bar 6 lower surface fixedly mounts a positioning block 17, this locating piece 17 is by transparent steel
Change glass to make, locating piece 17 lower surface is provided with a skid resistant course 16, and this skid resistant course 16 is made up of transparent elastomeric material.
In the present embodiment, described expansion link 12 one end fixedly mounts a fixed block 13, the fixing peace in this fixed block 13 lower end
Fill a chalk sleeve 14, this chalk sleeve 14 is inserted into a chalk 15；It is provided with a containment vessel 9, this containment vessel 9 is in outside described gear 10
L-shaped structure is arranged, and this containment vessel 9 one end is fixedly connected with support bar 6.
Operation principle：First pass through handle and pick up whole device, then by handle, locating piece is close on blackboard, due to fixed
Position block and skid resistant course are all transparent so that not interfering with the judgement of center position, can effectively prevent from painting by skid resistant course
During picture, sliding occurs in central point, and after determining central point, determines round radius by expansion link, after determining radius, presses
Controlling switch on lower handle, starts motor by controlling switch, and motor can carry moving gear to rotate, and gear then can carry dynamic bearing
Outer ring rotation, on outer ring connect expansion link can around central point rotation turn around, a complete circle of quickly painting out.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to
In this, any change or replacement expected without creative work, all should cover within protection domain of the present utility model.
Therefore, protection domain of the present utility model should be defined by the protection domain that claims are limited.
Claims (6)
1. a kind of mathematics teaching apparatus it is characterised in that：Including support bar, fixed installation one bearing, this axle in the middle of described support bar
On the upper surface of bearing outer-ring, around outer ring one, circle is provided with a screw thread, and the outer ring of bearing fixedly mounts an expansion link, described support
Bar is provided with a motor mounting groove positioned at bearing upper end, this motor mounting groove right openings, fixing peace in described motor mounting groove
Fill a motor, the rotating shaft of this motor opening on the right side of motor mounting groove extends to the external world, and fixedly mounts a gear, this tooth
Wheel outer ring face is connected with the screw thread engagement of bearing upper surface.
2. mathematics teaching apparatus according to claim 1 it is characterised in that：Described support bar is located at motor mounting groove upper end
It is provided with a battery settling groove, this battery settling groove right openings, fixedly mount one by hinge at battery settling groove right openings
Cover plate, is provided with an accumulator in described motor mounting groove.
3. mathematics teaching apparatus according to claim 1 it is characterised in that：Described post upper fixedly mounts one handle,
One controlling switch is fixedly mounted on this handle, the outfan of this controlling switch is connected with motor and accumulator respectively by electric wire.
4. mathematics teaching apparatus according to claim 1 it is characterised in that：Fixedly mount certain on described support bar lower surface
Position block, this locating piece is made up of transparent safety glass, and locating piece lower surface is provided with a skid resistant course, and this skid resistant course is by transparent
Elastomeric material is made.
5. mathematics teaching apparatus according to claim 1 it is characterised in that：On described expansion link one end, fixed installation one is fixing
Block, this fixed block lower end fixedly mounts a chalk sleeve, and this chalk sleeve is inserted into a chalk.
6. mathematics teaching apparatus according to claim 1 it is characterised in that：It is provided with a containment vessel, this guarantor outside described gear
The L-shaped structure setting of protective case, this containment vessel one end is fixedly connected with support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620581771.9U CN205929926U (en) | 2016-06-10 | 2016-06-10 | Mathematics teaching instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620581771.9U CN205929926U (en) | 2016-06-10 | 2016-06-10 | Mathematics teaching instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205929926U true CN205929926U (en) | 2017-02-08 |
Family
ID=57933146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620581771.9U Expired - Fee Related CN205929926U (en) | 2016-06-10 | 2016-06-10 | Mathematics teaching instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205929926U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878080A (en) * | 2017-12-14 | 2018-04-06 | 王旭 | A kind of automation picture circular arc device easy to operation |
| CN108995449A (en) * | 2018-08-03 | 2018-12-14 | 王建国 | Multifunctional compass is used in a kind of teaching |
| CN109080336A (en) * | 2018-08-20 | 2018-12-25 | 西安石油大学 | Higher mathematics plotter |
| CN109159584A (en) * | 2018-08-20 | 2019-01-08 | 西安工程大学 | A kind of mathematics drawing tool |
| CN112848760A (en) * | 2021-01-25 | 2021-05-28 | 林玲 | Compasses for teaching |
| CN114919312A (en) * | 2022-05-20 | 2022-08-19 | 浙江师范大学 | Photoelectric integrated multifunctional teaching aid for teaching |
-
2016
- 2016-06-10 CN CN201620581771.9U patent/CN205929926U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878080A (en) * | 2017-12-14 | 2018-04-06 | 王旭 | A kind of automation picture circular arc device easy to operation |
| CN108995449A (en) * | 2018-08-03 | 2018-12-14 | 王建国 | Multifunctional compass is used in a kind of teaching |
| CN109080336A (en) * | 2018-08-20 | 2018-12-25 | 西安石油大学 | Higher mathematics plotter |
| CN109159584A (en) * | 2018-08-20 | 2019-01-08 | 西安工程大学 | A kind of mathematics drawing tool |
| CN112848760A (en) * | 2021-01-25 | 2021-05-28 | 林玲 | Compasses for teaching |
| CN114919312A (en) * | 2022-05-20 | 2022-08-19 | 浙江师范大学 | Photoelectric integrated multifunctional teaching aid for teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170208 Termination date: 20200610 |