CN206510645U - Ruler used in mathematics teaching - Google Patents
Ruler used in mathematics teaching Download PDFInfo
- Publication number
- CN206510645U CN206510645U CN201621354344.3U CN201621354344U CN206510645U CN 206510645 U CN206510645 U CN 206510645U CN 201621354344 U CN201621354344 U CN 201621354344U CN 206510645 U CN206510645 U CN 206510645U
- Authority
- CN
- China
- Prior art keywords
- ruler
- chi
- rotating shaft
- circle
- right semi
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
Ruler used in mathematics teaching, is related to mathematical education, more particularly, to a kind of educational aid, belongs to culture and education apparatus technical field.The utility model is to be only applicable to measure angle within 180 degree to solve semi-circle ruler instrument, and the angle more than 180 degree can not directly read the technical problem of numerical value.It includes left semicircle chi, right semi-circle chi, the rotating shaft of left semicircle chi, the rotating shaft of right semi-circle chi, connecting plate, the first ruler, first rotating shaft, the second ruler, the second rotating shaft and the 3rd ruler.This new structural design is reasonable and practical, can be very convenient to institute's measuring angle picture straight line by ruler rotational positioning when measuring large-size angle, usually can also work as ruler and use.And without using when the 3rd ruler is removed from bearing pin, can by left semicircle chi, right semi-circle chi, the first ruler, the second ruler and the 3rd ruler store together.
Description
Technical field
The utility model is related to mathematical education, more particularly, to a kind of educational aid, belongs to culture and education apparatus technical field.
Background technology
Ruler, semi-circle ruler instrument are instruments essential during mathematical education is drawn, and these current instruments are all single use,
Carry very inconvenient, slightly accidentally miss certain part instrument, can be made troubles to drawing, and use these instruments drawing consumption
Shi Duo, efficiency is low.And semi-circle ruler instrument is only applicable to measure the angle within 180 degree, the angle more than 180 degree can not directly be read
Access value.
Utility model content
The purpose of this utility model is to be only applicable to measure angle within 180 degree to solve semi-circle ruler instrument, more than 180
The angle of degree can not directly read the technical problem of numerical value, and there is provided a kind of ruler used in mathematics teaching.
Ruler used in mathematics teaching, it includes left semicircle chi, right semi-circle chi, the rotating shaft of left semicircle chi, the rotating shaft of right semi-circle chi, connection
Plate, the first ruler, first rotating shaft, the second ruler, the second rotating shaft and the 3rd ruler, left semicircle chi are fixed on left semicircle chi rotating shaft
On, right semi-circle chi is fixed in right semi-circle chi rotating shaft, connecting plate be located between left semicircle chi and right semi-circle chi, connecting plate respectively with
The rotating shaft of left semicircle chi and right semi-circle chi rotating shaft are hinged, and right semi-circle chi is hinged with the first ruler and the second ruler by first rotating shaft,
Second ruler is hinged with the 3rd ruler by the second rotating shaft, and the first ruler left end is provided with bearing pin, and the 3rd ruler left end is provided with fixation
Hole, fixed bore dia is more than the diameter of bearing pin, and the 3rd ruler is enclosed on bearing pin by fixing hole and is fixed on the first ruler,
The base of the connecting plate and the base of the first ruler are point-blank.
The left semicircle chi rotating shaft and right semi-circle chi shaft diameter are equal.
The angle of first ruler and the second ruler formation is right angle.
The left end of 3rd ruler and the base of the first ruler are point-blank.
The right-hand member of 3rd ruler and the base of the second ruler are point-blank.
The advantage of the utility model is：Reasonable in design is practical, and be skillfully constructed novelty, easy to use, Jiao Shihe
Student, which is imparted knowledge to students and done one's assignment with the chi, improves drawing efficrence and accuracy rate, and the chi dual-use material is applied in combination, its manufacturing cost
It is low to have good penetration and promotion prospect.Can be by ruler rotational positioning to institute's measuring angle picture straight line when measuring large-size angle
It is very convenient, it usually can also work as ruler and use.Ruler, graphometer collection are integrated, not only carry convenient, and structure
Simply, it is easy to use, draw quick, improve operating efficiency and quality of instruction.
And without using when the 3rd ruler is removed from bearing pin, can be by left semicircle chi, right semi-circle chi, first straight
Chi, the second ruler and the 3rd ruler are stored together.
Brief description of the drawings
Fig. 1 is the structural representation of ruler used in mathematics teaching.
Embodiment
Technical solutions of the utility model are not limited to act embodiment set forth below, in addition to each embodiment
Between any combination.
Embodiment one：Present embodiment ruler used in mathematics teaching, it includes left semicircle chi 1, right semi-circle chi 2, left half
Circle chi rotating shaft 3, right semi-circle chi rotating shaft 4, connecting plate 5, the first ruler 6, first rotating shaft 7, the second ruler 8, the second rotating shaft 9 and the 3rd
Ruler 10, left semicircle chi 1 is fixed in left semicircle chi rotating shaft 3, and right semi-circle chi 2 is fixed in right semi-circle chi rotating shaft 4, connecting plate 5
Between left semicircle chi 1 and right semi-circle chi 2, connecting plate 5 is hinged with left semicircle chi rotating shaft 3 and right semi-circle chi rotating shaft 4 respectively, right
Semi-circle ruler 2 is hinged with the first ruler 6 and the second ruler 8 by first rotating shaft 7, and the second ruler 8 and the 3rd ruler 10 pass through second
Rotating shaft 9 is hinged, and the left end of the first ruler 6 is provided with bearing pin 11, and the left end of the 3rd ruler 10 is provided with fixing hole 12, and the diameter of fixing hole 12 is more than
The diameter of bearing pin 11, and the 3rd ruler 10 is enclosed on bearing pin 11 by fixing hole 12 and is fixed on the first ruler 6, the connection
The base of plate 5 and the base of the first ruler 6 are point-blank.
Embodiment two：Turn from the left semicircle chi rotating shaft 3 unlike embodiment one and right semi-circle chi
The diameter of axle 4 is equal.It is other identical with embodiment one.
Embodiment three：First ruler unlike one of present embodiment and embodiment one or two
6 and second ruler 8 formation angle be right angle.It is other identical with one of embodiment one or two.
Embodiment four：3rd ruler unlike one of present embodiment and embodiment one to three
The base of 10 left end and the first ruler 6 is point-blank.It is other identical with one of embodiment one to three.
Embodiment five：3rd ruler unlike one of present embodiment and embodiment one to four
The base of 10 right-hand member and the second ruler 8 is point-blank.It is other identical with one of embodiment one to four.
Claims (5)
1. ruler used in mathematics teaching, it includes left semicircle chi (1), right semi-circle chi (2), left semicircle chi rotating shaft (3), right semi-circle chi rotating shaft
(4), connecting plate (5), the first ruler (6), first rotating shaft (7), the second ruler (8), the second rotating shaft (9) and the 3rd ruler (10),
It is characterized in that：Left semicircle chi (1) is fixed in left semicircle chi rotating shaft (3), and right semi-circle chi (2) is fixed on right semi-circle chi rotating shaft
(4) on, connecting plate (5) be located between left semicircle chi (1) and right semi-circle chi (2), connecting plate (5) respectively with left semicircle chi rotating shaft
(3) it is hinged with right semi-circle chi rotating shaft (4), right semi-circle chi (2) passes through first rotating shaft (7) with the first ruler (6) and the second ruler (8)
It is hinged, the second ruler (8) is hinged with the 3rd ruler (10) by the second rotating shaft (9), the first ruler (6) left end is provided with bearing pin
(11), the 3rd ruler (10) left end is provided with fixing hole (12), and fixing hole (12) diameter is more than the diameter of bearing pin (11), and the 3rd
Ruler (10) is enclosed on bearing pin (11) by fixing hole (12) to be fixed on the first ruler (6), the base of the connecting plate (5) with
The base of first ruler (6) is point-blank.
2. ruler used in mathematics teaching according to claim 1, it is characterised in that：The left semicircle chi rotating shaft (3) and right semi-circle chi
Rotating shaft (4) diameter is equal.
3. ruler used in mathematics teaching according to claim 1, it is characterised in that：First ruler (6) and the second ruler (8) shape
Into angle be right angle.
4. ruler used in mathematics teaching according to claim 1, it is characterised in that：The left end of 3rd ruler (10) and first straight
The base of chi (6) is point-blank.
5. ruler used in mathematics teaching according to claim 1, it is characterised in that：The right-hand member of 3rd ruler (10) and second straight
The base of chi (8) is point-blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354344.3U CN206510645U (en) | 2016-12-09 | 2016-12-09 | Ruler used in mathematics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354344.3U CN206510645U (en) | 2016-12-09 | 2016-12-09 | Ruler used in mathematics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206510645U true CN206510645U (en) | 2017-09-22 |
Family
ID=59863338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621354344.3U Expired - Fee Related CN206510645U (en) | 2016-12-09 | 2016-12-09 | Ruler used in mathematics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206510645U (en) |
-
2016
- 2016-12-09 CN CN201621354344.3U patent/CN206510645U/en not_active Expired - Fee Related
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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: 20170922 Termination date: 20181209 |