CN202685686U - Compass ruler for mathematics teaching - Google Patents

Compass ruler for mathematics teaching Download PDF

Info

Publication number
CN202685686U
CN202685686U CN 201220361046 CN201220361046U CN202685686U CN 202685686 U CN202685686 U CN 202685686U CN 201220361046 CN201220361046 CN 201220361046 CN 201220361046 U CN201220361046 U CN 201220361046U CN 202685686 U CN202685686 U CN 202685686U
Authority
CN
China
Prior art keywords
slide block
ruler
chute
compass
fixator
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
Application number
CN 201220361046
Other languages
Chinese (zh)
Inventor
张宪乐
Original Assignee
张宪乐
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 张宪乐 filed Critical 张宪乐
Priority to CN 201220361046 priority Critical patent/CN202685686U/en
Application granted granted Critical
Publication of CN202685686U publication Critical patent/CN202685686U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model discloses a compass ruler for mathematics teaching. The compass ruler comprises a straight ruler (1), and is characterized in that a chute (2) is formed in the middle of the straight ruler (1); two slide blocks (3) are arranged in the chute (2); a scale pointer (5) is respectively arranged on the upper part of each slide block (3); a telescopic positioning needle (4) is arranged on the lower part of the left-end slide block (3); a chalk holder (6) is arranged on the lower part of the right-end slide block (3); and a fixing device (7) is arranged on a side wall at the right end of each slide block (3) and on a part which corresponds to the chute (2). By adoption of the structure, the effects that the compass ruler is convenient to use and can serve as a straight ruler and the center of a circle can be fixed on a plane are achieved.

Description

The compass for math teaching chi
Technical field
The utility model relates to a kind of auxiliary mathematics teaching appliance, relates in particular to a kind of compass for math teaching chi.
Background technology
Mathematical education is often used compasses and ruler teaching aid at present, because the two separation and Performance Ratio are more single, needs repeatedly to change the mapping apparatus in the blackboard mapping in the mathematical education process, so not only wastes time and energy, and has wasted valuable instructional blocks of time.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and is easy to use, the center of circle can be fixed on the compass for math teaching chi that also can double as ruler on the plane.
The technical solution of the utility model is a kind of compass for math teaching chi, it comprises ruler 1, it is characterized in that: be provided with chute 2 in the centre of described ruler 1, in described chute 2, be provided with two slide blocks 3, be respectively equipped with tuning drive gear 5 on the top of described each slide block 3, be provided with flexible pilot pin 4 in the bottom of described left end slide block 3, be provided with chalk holder 6 in the bottom of described right-hand member slide block 3, on the sidewall of described each slide block 3 right-hand member and with the corresponding section, position of described chute 2, be respectively equipped with fixator 7.
The technical solution of the utility model can also be that described fixator 7 is comprised of rotating shaft and eccentric disc, and the center of circle that described eccentric disc is passed in described rotating shaft is fixed on the sidewall of described slide block 3.
The beneficial effects of the utility model are to be provided with chute 2 by the centre at described ruler 1, in described chute 2, be provided with two slide blocks 3, be respectively equipped with tuning drive gear 5 on the top of described each slide block 3, be provided with flexible pilot pin 4 in the bottom of described left end slide block 3, be provided with chalk holder 6 in the bottom of described right-hand member slide block 3, on the sidewall of described each slide block 3 right-hand member and with the corresponding section, position of described chute 2, be respectively equipped with fixator 7, during use, ruler 1 can be used as ruler and makes straight line or oblique line, owing to be provided with chute 2 in the centre of ruler 1, slide block 3 is in chute 2 interior movements, flexible pilot pin 4 on the slide block 3 is fixed on the blackboard, determine the position of chalk holder 6 by the required radius length of tuning drive gear 5 usefulness, pass through again fixedly slide block 3 of fixator 7, just can draw circle around 4 rotations of flexible pilot pin, realize easy to usely, the center of circle can be fixed on the plane and can double as the effect that ruler uses.
Description of drawings
Fig. 1 is structure chart of the present utility model
Among Fig. 11, ruler, 2, chute, 3, slide block, 4, flexible pilot pin, 5, tuning drive gear, 6, chalk holder, 7, fixator.
The specific embodiment
According to Fig. 1, shown in 2, the utility model relates to a kind of compass for math teaching chi, it comprises ruler 1, be provided with chute 2 in the centre of described ruler 1, in described chute 2, be provided with two slide blocks 3, be respectively equipped with tuning drive gear 5 on the top of described each slide block 3, be provided with flexible pilot pin 4 in the bottom of described left end slide block 3, be provided with chalk holder 6 in the bottom of described right-hand member slide block 3, on the sidewall of described each slide block 3 right-hand member and with the corresponding section, position of described chute 2, be respectively equipped with fixator 7, described fixator 7 is comprised of rotating shaft and eccentric disc, and the center of circle that described eccentric disc is passed in described rotating shaft is fixed on the sidewall of described slide block 3; During use, ruler 1 can be used as ruler and makes straight line or oblique line, owing to be provided with chute 2 in the centre of ruler 1, slide block 3 is in chute 2 interior movements, flexible pilot pin 4 on the slide block 3 is fixed on the blackboard, determine the position of chalk holder 6 by the required radius length of tuning drive gear 5 usefulness, by the rotation of the eccentric disc on the fixator 7 and upper wall or the lower wall tight fit of chute 2 slide block 3 is fixed again, just can draw circle around flexible pilot pin 4 rotations, realized easy to usely, the center of circle can be fixed on the plane and can double as the effect that ruler uses.

Claims (2)

1. compass for math teaching chi, it comprises ruler (1), it is characterized in that: be provided with chute (2) in the centre of described ruler (1), in described chute (2), be provided with two slide blocks (3), be respectively equipped with tuning drive gear (5) on the top of described each slide block (3), be provided with flexible pilot pin (4) in the bottom of described left end slide block (3), be provided with chalk holder (6) in the bottom of described right-hand member slide block (3), on the sidewall of described each slide block (3) right-hand member and with the corresponding section, position of described chute (2), be respectively equipped with fixator (7).
2. compass for math teaching chi according to claim 1, it is characterized in that: described fixator (7) is comprised of rotating shaft and eccentric disc, and the center of circle that described eccentric disc is passed in described rotating shaft is fixed on the sidewall of described slide block (3).
CN 201220361046 2012-07-16 2012-07-16 Compass ruler for mathematics teaching Expired - Fee Related CN202685686U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220361046 CN202685686U (en) 2012-07-16 2012-07-16 Compass ruler for mathematics teaching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220361046 CN202685686U (en) 2012-07-16 2012-07-16 Compass ruler for mathematics teaching

Publications (1)

Publication Number Publication Date
CN202685686U true CN202685686U (en) 2013-01-23

Family

ID=47541349

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220361046 Expired - Fee Related CN202685686U (en) 2012-07-16 2012-07-16 Compass ruler for mathematics teaching

Country Status (1)

Country Link
CN (1) CN202685686U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105818577A (en) * 2016-04-22 2016-08-03 王立云 Straight ruler with circle drawing function
CN112248693A (en) * 2020-10-22 2021-01-22 潍坊科技学院 Combined plotter for mathematical education

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105818577A (en) * 2016-04-22 2016-08-03 王立云 Straight ruler with circle drawing function
CN112248693A (en) * 2020-10-22 2021-01-22 潍坊科技学院 Combined plotter for mathematical education

Similar Documents

Publication Publication Date Title
CN202976568U (en) Multifunctional teaching pointer
CN103824505B (en) Cam plotting apparatus
CN103879203A (en) Multifunctional ellipsograph
CN203331648U (en) Compass for electric mathematical teaching
CN202685686U (en) Compass ruler for mathematics teaching
CN109080333A (en) A kind of teaching apparatus for mathematics
CN202319550U (en) Compass for math teaching
CN202242608U (en) Mathematics teaching aid
CN203780151U (en) Mathematics teaching aid for junior high school
CN201257850Y (en) Multi-purpose teaching aid
CN207403444U (en) A kind of applied mathematics teaching combination drawing rule
CN202923228U (en) Drawing rule for applied mathematics teaching
CN202368183U (en) Mathematics teaching aid
CN205255846U (en) Multi -functional learning aid is used to middle school mathematics
CN202319567U (en) Mathematical teaching scale
CN202319548U (en) Multifunctional mathematical education scale
CN208774362U (en) A kind of middle school mathematics picture teaching ruler
CN202935034U (en) Movable ruler used in mathematics
CN202986514U (en) Mathematical teaching board
CN202573516U (en) Math teaching aid
CN205364950U (en) Multifunctional machinery teaching ruler that charts
CN211641620U (en) Novel higher mathematics is with drawing device
CN202944096U (en) Mathematics plotting instrument
CN202293914U (en) Ruler device for mathematics teaching
CN202319564U (en) Multifunctional math teaching aid

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130123

Termination date: 20130716