CN207711657U - A kind of educational compasses ruler of mathematics - Google Patents
A kind of educational compasses ruler of mathematics Download PDFInfo
- Publication number
- CN207711657U CN207711657U CN201720315902.3U CN201720315902U CN207711657U CN 207711657 U CN207711657 U CN 207711657U CN 201720315902 U CN201720315902 U CN 201720315902U CN 207711657 U CN207711657 U CN 207711657U
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- CN
- China
- Prior art keywords
- scale
- circle device
- chalk
- rotating bar
- connecting 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of educational compasses rulers of mathematics, circle device and second, which is drawn, including scale, rotating bar, first draws circle device, rotating bar is fixedly connected on the left end of scale, the bottom end of rotating bar is installed with tapered locating piece, adjusting through-hole is offered on scale, the right end lower surface of scale is installed with the support leg of vertical direction setting, and the bottom end of support leg is provided with freewheel.The utility model is simple in structure, simple operation, the setting for drawing circle device using the first picture circle device and second can be realized draws concentric circles using compasses combined with ruler, it is convenient and efficient, freewheel is in tapered locating piece in same level, so that scale remains at the state parallel with blackboard, improve the stability of compasses combined with ruler mapping, chalk on picture circle device remains under the action of compressed spring restoring force to be contacted with the surface of blackboard, the operation that the second trip bolt adjustment chalk position is frequently utilized due to chalk constantly consumes is avoided, it is convenient and efficient.
Description
Technical field
The utility model is related to educational compasses ruler, the educational compasses ruler of specifically a kind of mathematics.
Background technology
Compasses are the tools for drawing circle or string, are usually used in construction with ruler and compasses in mathematics and drawing.Compasses combined with ruler is teacher
Essential a kind of teaching aid in mathematical education, in mathematical education, it is often necessary to which, in blackboard upper drawing circle, most of teachers is adopted
It is drawn with compasses.
However, the big compasses on Traditional Classroom are made of two feet, a foot has spur, another angle to fix chalk, this
The compasses construction efficiency of sample is low, can not make concentric circles, and in mapping, the stability of compasses is poor so that compasses construction
Accuracy it is not high, meanwhile, chalk on compasses needs to frequently replace chalk during continuous consumption, influences teaching effect
Rate, practicability be not strong.
Utility model content
The purpose of this utility model is to provide a kind of educational compasses rulers of mathematics, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the utility model provides the following technical solutions：
A kind of educational compasses ruler of mathematics, including scale, rotating bar, the first picture circle device and second draw circle device, institute
State the left end that rotating bar is fixedly connected on scale；The bottom end of the rotating bar is installed with tapered locating piece；On the scale
Offer adjusting through-hole；The right end lower surface of the scale is installed with the support leg of vertical direction setting, the bottom of support leg
End is provided with freewheel；Described first draw circle device and second draw circle device structure it is identical, include montant and fixed peace
The inside middle portion of supporting rod mounted in montant top, wherein montant is fixedly installed strut, and strut horizontally slips logical set on adjusting
In hole, strut is locked by locking nut, and the bottom of montant is further opened with cylindricality and slides chamber, and cylindricality is slided to glide in intracavitary
Dynamic to be equipped with chalk installation sleeve, the inside that cylindricality slides chamber is additionally provided with compressed spring, is gone back in the lower lumen of chalk installation sleeve
It is arranged with chalk, the mode that is connected through a screw thread on supporting rod, which rotates, is provided with the first trip bolt；The top of the rotating bar with
One end of first connecting rod is articulated and connected by articulated shaft, and the other end of first connecting rod and one end of second connecting rod are cut with scissors by articulated shaft
It connects in succession, the other end of second connecting rod and the top of connecting rod are articulated and connected by articulated shaft；The bottom end of the connecting rod and the
One supporting rod drawn on circle device is fixedly connected.
As further program of the utility model：The lower surface of the scale is provided with graduation mark.
As further program of the utility model：The tip of the tapered locating piece is downward.
As further program of the utility model：The freewheel is in tapered locating piece in same level.
As further program of the utility model：The top that the upper end of the compressed spring slides chamber with cylindricality is connected,
It is connected at the top of the lower end of compressed spring and chalk installation sleeve.
As further program of the utility model：The outer ring of the chalk installation sleeve is additionally provided with for fixing chalk
The second trip bolt.
As further program of the utility model：It is fixedly installed rubber pad in the inner wall surface of the montant.
Compared with prior art, the utility model has the beneficial effects that：The utility model is simple in structure, simple operation, profit
The setting for drawing circle device with the first picture circle device and second can be realized draws concentric circles using compasses combined with ruler, convenient and efficient；Strut
Sliding, which is set to, to be adjusted in through-hole, is drawn circle device and second convenient for first and is drawn the adjustment of circle setting position, realizes different-diameter circle
Mapping；Freewheel is in tapered locating piece in same level so that scale remains at the state parallel with blackboard, carries
The high accuracy and stability of compasses combined with ruler mapping；Wherein chalk remains and blackboard under the action of compressed spring restoring force
Surface contact, avoid due to chalk constantly consumes and frequently to utilize the operation of the second trip bolt adjustment chalk position, it is convenient
Fast.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of part A in Fig. 1.
Fig. 3 is the vertical view of montant in the utility model.
In figure：1- scales, 2- rotating bars, 3- adjust through-hole, 4- first connecting rods, 5- second connecting rods, the tapered locating pieces of 6-, 7-
Support leg, 8- freewheels, 9- first draw circle device, and 10- second draws circle device, 11- connecting rods, 12- locking nuts, 13- first
Trip bolt, 14- montants, 15- supporting rods, 16- articulated shafts, 17- chalks, 18- chalk installation sleeves, the second trip bolts of 19-,
20- compressed springs, 21- cylindricalitys slide chamber, 22- struts, 23- rubber pads.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.1-3, in the utility model embodiment, a kind of educational compasses ruler of mathematics, including scale 1, rotation
Bar 2, first draws circle device 9 and second and draws circle device 10, and the rotating bar 2 is fixedly connected on the left end of scale 1, under scale 1
Surface is provided with graduation mark；The bottom end of the rotating bar 2 is installed with tip tapered locating piece 6 directed downwardly；On the scale 1
It offers and adjusts through-hole 3；The right end lower surface of the scale 1 is installed with the support leg 7 of vertical direction setting, support leg 7
Bottom end be provided with freewheel 8, being rotated around rotating bar 2 convenient for scale 1 of freewheel 8 of setting；The freewheel 8 with
Tapered locating piece 6 is in same level so that scale 1 remains at the state parallel with blackboard, improves compasses combined with ruler
The stability of mapping；Described first draw circle device 9 and second draw circle device 10 structure it is identical, include montant 14 and fixed
The inside middle portion of supporting rod 15 mounted on 14 top of montant, wherein montant 14 is fixedly installed strut 22, and strut 22 or so is sliding
Dynamic be set to is adjusted in through-hole 3, and strut 22 is locked by locking nut 12, and the bottom of montant 14 is further opened with cylindricality cunning
Chamber 21, cylindricality, which is slided, to be slided up and down in chamber 21 equipped with chalk installation sleeve 18, and the inside that cylindricality slides chamber 21 is additionally provided with compressed spring
20, the upper end of compressed spring 20 is connected with the top of cylindricality cunning chamber 21, lower end and the chalk installation sleeve 18 of compressed spring 20
Top be connected, chalk 17 is also arranged in the lower lumen of chalk installation sleeve 18, the outer ring of chalk installation sleeve 18 is also
Be provided with the second trip bolt 19 for fixing chalk 17, wherein chalk 17 under the action of 20 restoring force of compressed spring always
Holding is contacted with the surface of blackboard, is avoided and frequently the second trip bolt 19 is utilized to adjust chalk 17 because chalk 17 constantly consumes
The operation of position, convenient and efficient, the mode that is connected through a screw thread on supporting rod 15, which rotates, is provided with the first trip bolt 13；It is described perpendicular
Rubber pad 23 is fixedly installed in the inner wall surface of bar 14, the effect of rubber pad 23 is to increase rubbing between montant 14 and scale 1
Power is wiped, the stability of montant 14 is improved；Described first setting for drawing the circle picture circle of device 9 and second device 10, which can be realized, utilizes circle
Scale draws concentric circles, convenient and efficient；The sliding of the strut 22, which is set to, to be adjusted in through-hole 3, and circle device 9 and second is drawn convenient for first
The adjustment of 10 position of circle device is drawn, realizes the mapping of different-diameter circle；The one end on the top and first connecting rod 4 of the rotating bar 2
It being articulated and connected by articulated shaft 16, the other end of first connecting rod 4 is articulated and connected with one end of second connecting rod 5 by articulated shaft 16,
The other end of second connecting rod 5 and the top of connecting rod 11 are articulated and connected by articulated shaft 16, first connecting rod 4 and second connecting rod 5
It is provided with and is conducive to hand-held operation of the operating personnel to compasses combined with ruler；The branch on circle device 9 is drawn with first in the bottom end of the connecting rod 11
Strut 15 is fixedly connected.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (7)
1. a kind of educational compasses ruler of mathematics, including scale (1), rotating bar (2), the first picture circle device (9) and second draw circle
Device (10), which is characterized in that the rotating bar (2) is fixedly connected on the left end of scale (1)；The bottom end of the rotating bar (2)
It is installed with tapered locating piece (6)；It is offered on the scale (1) and adjusts through-hole (3)；The right end following table of the scale (1)
Face is installed with the support leg (7) of vertical direction setting, and the bottom end of support leg (7) is provided with freewheel (8)；Described first draws
Circle device (9) and second draw circle device (10) structure it is identical, include montant (14) and be fixedly mounted on montant (14) push up
The inside middle portion of the supporting rod (15) at end, wherein montant (14) is fixedly installed strut (22), and strut (22), which horizontally slips, to be set to
It adjusts in through-hole (3), strut (22) is locked by locking nut (12), and the bottom of montant (14) is further opened with cylindricality
Sliding chamber (21), cylindricality, which is slided, to be slided up and down in chamber (21) equipped with chalk installation sleeve (18), and the inside that cylindricality slides chamber (21) is also set up
There is compressed spring (20), chalk (17) is also arranged in the lower lumen of chalk installation sleeve (18), supporting rod passes through on (15)
Thread connecting mode rotation is provided with the first trip bolt (13)；The one end on the top and first connecting rod (4) of the rotating bar (2)
It is articulated and connected by articulated shaft (16), the other end of first connecting rod (4) is cut with scissors with one end of second connecting rod (5) by articulated shaft (16)
It connects in succession, the other end of second connecting rod (5) is articulated and connected with the top of connecting rod (11) by articulated shaft (16)；The connecting rod
(11) it draws the supporting rod (15) on circle device (9) with first and is fixedly connected in bottom end.
2. a kind of educational compasses ruler of mathematics according to claim 1, which is characterized in that the tapered locating piece (6)
Tip downward.
3. a kind of educational compasses ruler of mathematics according to claim 1, which is characterized in that the freewheel (8) and cone
Type locating piece (6) is in same level.
4. a kind of educational compasses ruler of mathematics according to claim 1, which is characterized in that the compressed spring (20)
The top that upper end slides chamber (21) with cylindricality is connected, and the lower end of compressed spring (20) is connected with the top of chalk installation sleeve (18)
It connects.
5. a kind of educational compasses ruler of mathematics according to claim 1, which is characterized in that the chalk installation sleeve
(18) outer ring is additionally provided with the second trip bolt (19) for fixing chalk (17).
6. a kind of educational compasses ruler of mathematics according to claim 1, which is characterized in that the inner wall of the montant (14)
Rubber pad (23) is fixedly installed on surface.
7. a kind of educational compasses ruler of mathematics according to claim 1, which is characterized in that the following table of the scale (1)
Face is provided with graduation mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720315902.3U CN207711657U (en) | 2017-03-21 | 2017-03-21 | A kind of educational compasses ruler of mathematics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720315902.3U CN207711657U (en) | 2017-03-21 | 2017-03-21 | A kind of educational compasses ruler of mathematics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207711657U true CN207711657U (en) | 2018-08-10 |
Family
ID=63062982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720315902.3U Expired - Fee Related CN207711657U (en) | 2017-03-21 | 2017-03-21 | A kind of educational compasses ruler of mathematics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207711657U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909286A (en) * | 2018-08-23 | 2018-11-30 | 雷敬汉 | Rope automatic pull-type compasses |
| CN109017058A (en) * | 2018-08-23 | 2018-12-18 | 雷敬汉 | gear automatic rotary compasses |
| CN111098623A (en) * | 2020-01-20 | 2020-05-05 | 上海电力大学 | Compasses capable of drawing parallel lines |
-
2017
- 2017-03-21 CN CN201720315902.3U patent/CN207711657U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909286A (en) * | 2018-08-23 | 2018-11-30 | 雷敬汉 | Rope automatic pull-type compasses |
| CN109017058A (en) * | 2018-08-23 | 2018-12-18 | 雷敬汉 | gear automatic rotary compasses |
| CN111098623A (en) * | 2020-01-20 | 2020-05-05 | 上海电力大学 | Compasses capable of drawing parallel lines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Yan Document name: Notification of Passing Examination on Formalities |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20190321 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |