CN204712728U - Compass for math teaching - Google Patents
Compass for math teaching Download PDFInfo
- Publication number
- CN204712728U CN204712728U CN201520424691.8U CN201520424691U CN204712728U CN 204712728 U CN204712728 U CN 204712728U CN 201520424691 U CN201520424691 U CN 201520424691U CN 204712728 U CN204712728 U CN 204712728U
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- rotating
- compasses
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- foot
- supporting
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- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 4
- 230000001788 irregular Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a kind of compass for math teaching, described compass for math teaching comprises feet (1) and rotates pin (2), one end of described rotation pin (2) and one end of described feet (1) hinged, described rotation pin (2) can rotate around described hinged place with make the other end of described rotation pin (2) near or away from the other end of described feet (1); Wherein, be connected with regulating part between described feet (1) and rotation pin (2), described regulating part can regulate described feet (1) and rotate the angle of the angle formed between pin (2).This compass for math teaching assisted teacher can draw standard circle attractive in appearance efficiently and easily on blackboard or blank.
Description
Technical Field
The utility model relates to a teaching aid specifically relates to a compasses for mathematical education.
Background
Compasses are used for drawing circles or strings in mathematics and drawing, and are commonly used for drawing rulers and compasses.
In daily teaching, a teacher often needs to perform circular demonstration on a blackboard or a whiteboard during teaching. One of the existing methods is to fasten a chalk or a whiteboard pen with one end of a rope, press the other end of the rope tightly on the blackboard or the whiteboard with one hand, and hold the chalk or the whiteboard pen with the other hand to draw. The drawing mode is often used, the fixed point of the rope deviates, so that the position of the circle center changes, and the drawing fails; or the orientation of the pen point of the chalk or the whiteboard pen is deviated, so that the circle is irregular, and the drawing is not beautiful.
The other class teaching circle drawing method is to use compasses self-made by teachers, the compasses are rough in manufacturing, supporting legs and rotating legs are easy to slip when drawing is conducted, and the angle between the supporting legs and the rotating legs is easy to change, so that the diameter of a circle changes, and drawing failure is caused.
It is therefore desirable to provide a teaching aid that can draw a circle on a blackboard or whiteboard conveniently and quickly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a compasses for mathematical education, this compasses for mathematical education can assist the teacher swiftly conveniently to draw the pleasing to the eye circular of standard on blackboard or blank.
In order to achieve the above object, the utility model provides a compasses for mathematical education, which comprises a supporting leg and a rotating leg, wherein one end of the rotating leg is hinged with one end of the supporting leg, and the rotating leg can rotate around the hinged part to enable the other end of the rotating leg to be close to or far away from the other end of the supporting leg; wherein, be connected with the regulating part between supporting legs and the swivel foot, the angle of the contained angle that forms between supporting legs and the swivel foot can be adjusted to the regulating part.
Preferably, the regulating part is including adjusting the carousel and adjusting the pole, adjusts the pole and runs through and adjust the carousel and be equipped with the external screw thread on the wall at the both ends of pole, wherein, all is equipped with the screw hole on supporting legs and the rotatory foot, adjusts the both ends of pole and independently runs through the screw hole respectively.
Preferably, the adjustment dial is a circular dial.
Preferably, a plurality of protrusions are formed on the outer peripheral wall of the circular turntable and extend outwards at intervals along the circumferential direction.
Preferably, the other end of the rotating foot is provided with a clamping piece for fixing the drawing pen.
Preferably, the clamping piece is two arc-shaped clamping pieces which are arranged oppositely; one end of each arc-shaped clamping piece is fixed on the rotating foot, the other end of each arc-shaped clamping piece extends outwards, and the other ends of the two arc-shaped clamping pieces are connected through a fastener, so that clamping holes are formed in the two arc-shaped clamping pieces.
Preferably, the end face of the other end of the supporting foot is provided with a sucker.
Preferably, the supporting foot and the rotating foot are both provided with telescopic structures.
Preferably, the hinge joint is provided with a rotating handle.
According to the technical scheme, the utility model discloses one end with the rotatory foot is articulated with the one end of supporting legs to be connected with the regulating part between supporting legs and the rotatory foot. The adjusting piece is adjusted during use, so that an angle is formed between the supporting leg and the rotating leg, the adjusting is stopped and the angle is fixed after the size of the angle meets the requirement, the supporting leg is fixed at one point on the blackboard or the whiteboard, and the rotating leg is rotated to quickly draw a standard circle on the blackboard or the whiteboard.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a compass for mathematical education according to a preferred embodiment of the present invention.
Description of the reference numerals
1-supporting foot 2-rotating foot
3-clamping part 4-adjusting rotary disc
5-adjusting lever 6-fastener
7-sucker 8-rotating handle
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the terms of orientation such as "upper, lower, inner, outer" and the like included in the terms only represent the orientation of the terms in a conventional use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.
Referring to fig. 1, the utility model provides a compasses for mathematical education, the compasses for mathematical education includes supporting legs 1 and swivel foot 2, one end of swivel foot 2 is articulated with one end of supporting legs 1, swivel foot 2 can rotate around the articulated place so that the other end of swivel foot 2 is close to or far away from the other end of supporting legs 1; wherein, be connected with the regulating part between supporting legs 1 and the swivel foot 2, the angle of the contained angle that forms between supporting legs 1 and the swivel foot 2 can be adjusted to the regulating part.
Through above-mentioned technical scheme, the one end of 2 with the swivel foot is articulated with the one end of supporting legs 1 to be connected with the regulating part between supporting legs 1 and swivel foot 2. The adjusting piece is adjusted during use, so that an angle is formed between the supporting leg 1 and the rotating leg 2, the adjusting is stopped and the angle is fixed after the size of the angle meets the requirement, the supporting leg 1 is fixed at one point on a blackboard or a whiteboard, and the rotating leg 2 is rotated to quickly draw a standard circle on the blackboard or the whiteboard.
In this embodiment, for the convenience of the teacher adjust the angle between supporting legs 1 and the rotatory foot 2 when using this compasses for mathematical education, simplify the regulative mode, preferably, this regulating part is including adjusting carousel 4 and adjusting pole 5, adjusts pole 5 and runs through and adjust the carousel 4 and be equipped with the external screw thread on the wall at the both ends of pole 5, wherein, all is equipped with the screw hole on supporting legs 1 and the rotatory foot 2, adjusts the both ends of pole 5 and independently runs through the screw hole respectively. Therefore, the adjusting rod 5 can be driven to rotate together by rotating the adjusting turntable 4, and the external threads at the two ends of the adjusting rod 5 are respectively matched with the threaded holes on the supporting legs 1 and the rotating legs 2, so that the angle between the supporting legs 1 and the rotating legs 2 is gradually increased; when the adjusting turntable 4 rotates in the opposite direction, the angle between the supporting leg 1 and the rotating leg 2 is gradually reduced until the supporting leg and the rotating leg are attached, so that the supporting leg and the rotating leg are convenient to store after use.
At the above-mentioned in-process of rotating regulation carousel 4, for the convenience rotates regulation carousel 4, avoids the teacher to be by its sharp-pointed corner fish tail in the use, and preferred regulation carousel 4 is circular carousel.
When circular carousel rotated, long-time multiple use easily made its surface smooth or used the teacher to have sweat on the finger, easily caused to rotate this circular carousel and skidded, delayed the teaching time, influenced the teaching progress, in order to avoid the emergence of this kind of condition, preferably outwards extend along circumference interval on the periphery wall of circular carousel has a plurality of archs. The friction between the fingers and the circular turntable is increased after the protrusions are arranged, so that the adjusting rod 5 can rotate more easily, and the angle between the supporting leg 1 and the rotating leg 2 can be adjusted conveniently and rapidly.
In addition, when the rotating foot 2 rotates around the supporting foot 1 for drawing, in order to fix the drawing pen and prevent the pen point from deviating to cause drawing failure due to irregular circle, the other end of the rotating foot 2 is preferably provided with a clamping piece 3 for fixing the drawing pen.
In the present embodiment, in order to enable the holder 3 to hold different types of drawing pens (such as chalk and whiteboard pens) and pens with different thicknesses, it is preferable that the holder 3 is two arc-shaped clips disposed opposite to each other; one end of each arc-shaped clamping piece is fixed on the rotating foot 2, the other end of each arc-shaped clamping piece extends outwards, and the other ends of the two arc-shaped clamping pieces are connected through the fastening piece 6, so that clamping holes are formed in the two arc-shaped clamping pieces. Therefore, the drawing pen can be conveniently installed and replaced, the drawing pen can penetrate through the clamping hole and the distance and the angle between the pen point and the drawing board can be adjusted only by loosening the fastener 6, and the drawing pen can be firmly locked by the clamping piece 3 through the fastener 6, so that the drawing pen can be effectively prevented from being inclined to cause the deformation of a drawn circumferential line in the drawing process.
Similarly, in order to prevent the center of circle indicated by the support leg 1 from being changed due to slipping at the contact portion between the support leg 1 and the drawing board when the rotation leg 2 rotates around the support leg 1, and thus the drawing pen draws a circle, it is preferable that a suction cup 7 is attached to the end surface of the other end of the support leg 1. Adsorb just so through sucking disc 7 on the drawing board can be fixed with the contact site between supporting legs 1 and the drawing board, even 2 rotation amplitude too big of rotatory foot also can not make the centre of a circle of drawing the skew take place.
In addition, since the diameter length of the circle that the teacher needs to draw is different, the angle between the support leg 1 and the swivel leg 2 is also different, and in order to make the teacher easily rotate the swivel leg 2 to draw in the case where the angle between the support leg 1 and the swivel leg 2 is widely opened, it is preferable that both the support leg 1 and the swivel leg 2 have a telescopic structure.
When the support legs 1 and the swivel legs 2 are perpendicular to the drawing board, the swivel legs 2 are preferably provided with a turning handle 8 at the hinge for the convenience of the teacher to turn around the support legs 1.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (9)
1. The compasses for the mathematical education are characterized by comprising supporting legs (1) and rotating legs (2), wherein one ends of the rotating legs (2) are hinged with one ends of the supporting legs (1), and the rotating legs (2) can rotate around the hinged positions to enable the other ends of the rotating legs (2) to be close to or far away from the other ends of the supporting legs (1); wherein,
the adjustable angle adjusting device is characterized in that an adjusting piece is connected between the supporting leg (1) and the rotating leg (2), and the adjusting piece can adjust the angle of an included angle formed between the supporting leg (1) and the rotating leg (2).
2. The compasses for mathematical education of claim 1, wherein said adjusting member comprises an adjusting turntable (4) and an adjusting rod (5), said adjusting rod (5) penetrates said adjusting turntable (4) and the wall of both ends of said adjusting rod (5) is provided with external screw threads, wherein both said supporting foot (1) and said rotating foot (2) are provided with screw holes, and both ends of said adjusting rod (5) respectively and independently penetrate said screw holes.
3. The compasses for mathematics teaching according to claim 2, characterized in that said adjusting dial (4) is a circular dial.
4. The compasses of claim 3, wherein a plurality of protrusions are formed on the outer peripheral wall of said circular turntable and extend outward at intervals in the circumferential direction.
5. The compasses for mathematics teaching according to any of claims 1 to 4, characterized in that the other end of said rotating foot (2) is provided with a holder (3) for fixing a drawing pen.
6. The compasses for mathematics teaching of claim 5, wherein said holding member (3) is two arc-shaped clamping pieces arranged oppositely; one end of each arc-shaped clamping piece is fixed on the rotating foot (2), the other end of each arc-shaped clamping piece extends outwards, and the other ends of the two arc-shaped clamping pieces are connected through a fastening piece (6) so that clamping holes are formed in the two arc-shaped clamping pieces.
7. The compasses for mathematics teaching according to any of claims 1 to 4, characterized in that a suction cup (7) is mounted on the end face of the other end of said supporting foot (1).
8. The compasses for mathematics teaching according to any of claims 1 to 4, characterized in that said supporting foot (1) and said rotating foot (2) are provided with a telescopic structure.
9. The compasses for mathematics teaching according to any of claims 1 to 4, characterized in that said articulated joint is provided with a turning handle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520424691.8U CN204712728U (en) | 2015-06-18 | 2015-06-18 | Compass for math teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520424691.8U CN204712728U (en) | 2015-06-18 | 2015-06-18 | Compass for math teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204712728U true CN204712728U (en) | 2015-10-21 |
Family
ID=54311753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520424691.8U Expired - Fee Related CN204712728U (en) | 2015-06-18 | 2015-06-18 | Compass for math teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204712728U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437832A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Leg-height-adjustable compasses |
| CN105437834A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
| CN105437833A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
| CN107718953A (en) * | 2017-10-26 | 2018-02-23 | 绍兴柯桥雷霄机械科技有限公司 | A kind of compasses for teaching of fix stably |
| CN107839386A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第高级中学 | A kind of spacing compasses |
| CN110202984A (en) * | 2019-05-24 | 2019-09-06 | 南阳理工学院 | A kind of mathematical education adjustable type compasses |
-
2015
- 2015-06-18 CN CN201520424691.8U patent/CN204712728U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437832A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Leg-height-adjustable compasses |
| CN105437834A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
| CN105437833A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
| CN107718953A (en) * | 2017-10-26 | 2018-02-23 | 绍兴柯桥雷霄机械科技有限公司 | A kind of compasses for teaching of fix stably |
| CN107839386A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第高级中学 | A kind of spacing compasses |
| CN110202984A (en) * | 2019-05-24 | 2019-09-06 | 南阳理工学院 | A kind of mathematical education adjustable type compasses |
| CN110202984B (en) * | 2019-05-24 | 2020-10-02 | 南阳理工学院 | Adjustable compasses for mathematical education |
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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: 20151021 Termination date: 20160618 |