CN213920461U

CN213920461U - Multipurpose circle ruler for middle and primary school teaching

Info

Publication number: CN213920461U
Application number: CN202022532313.5U
Authority: CN
Inventors: 欧阳梁
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-08-10
Anticipated expiration: 2030-11-05

Abstract

The utility model relates to a middle and primary school's teaching is with multi-purpose circle chi, including the circle chi body, be provided with circular angle scale on the edge of circle chi body, be provided with circular through-hole on the circle chi body, be provided with straight board chi on the middle part of circular through-hole, straight board chi separates circular through-hole for the semi-circular through-hole of symmetrical formula, is provided with semi-circular angle scale on the edge of semi-circular through-hole. The utility model discloses simple structure, convenient to use through the cooperation design of circle chi body, straight board chi, semi-circular through-hole, effectively solves current ruler function singleness, carries inconveniently, and the security is lower, and when using, needs frequent change, the waste time, the plotting inefficiency influences teacher's teaching effect scheduling problem.

Description

Multipurpose circle ruler for middle and primary school teaching

Technical Field

The utility model relates to a teaching aid technical field especially relates to a multi-purpose circle chi is used in middle and primary school's teaching.

Background

The primary school mathematics aims to teach children to know the numbers, such as four arithmetic operations, graphs, calculation formulas of length, unit conversion and other series of knowledge, and lays a good mathematical foundation for junior high school.

At present, in the process of mathematical teaching of middle and primary schools, a math teacher often uses various teaching aids such as a set square, a compass, a protractor, a straight ruler and the like to draw circles, angles, straight line sections and the like, the existing ruler has the set square, the protractor, the straight ruler and the like, the ruler is single in function, one ruler can only draw one shape, the teaching tools are more, the carrying is inconvenient, the tip part on the ruler extremely stabs students or teachers, and the safety is low; and when the device is used, the device needs to be frequently replaced, time is wasted, the plotting efficiency is low, the effect is poor, and the teaching effect of teachers is further influenced. In view of the above, a multipurpose circle ruler for teaching in middle and primary schools needs to be developed to overcome the defects of the existing ruler.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multi-purpose circle chi is used in middle and primary school's teaching to prior art not enough, through the cooperation design of circle chi body, straight board chi, semi-circular through-hole, effectively solve current ruler function singleness, carry inconveniently, the security is lower, and when using, needs frequent change, the waste time, the plotting is inefficient, influences teacher's teaching effect scheduling problem.

The utility model discloses the technical scheme who adopts:

the utility model provides a middle and primary school's teaching is with multi-purpose circle chi, includes the circle chi body, the design of circle chi body is circular structure, be provided with circular angle scale on the edge of circle chi body, be provided with circular through-hole on the circle chi body, be provided with straight board chi on the middle part of circular through-hole, straight board chi will circular through-hole separates for the semi-circular through-hole of symmetry formula, be provided with semi-circular angle scale on the edge of semi-circular through-hole.

Furthermore, the round ruler body and the straight plate ruler are both made of transparent materials.

Further, the range of the circular angle scale is 0-360 degrees.

Furthermore, the range of the semicircular angle scales is 0-180 degrees.

Furthermore, a plurality of clock through holes are arranged on the round ruler body at intervals, the clock through holes are distributed in a circumferential mode, and the clock through holes correspond to the round angle scales.

Furthermore, a circular hollow hole is formed in the middle of the straight plate ruler.

Further, the diameter of the hollow hole is 30 mm.

Furthermore, datum lines are arranged on the straight plate ruler and located on two sides of the hollow hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses simple structure, convenient to use through the cooperation design of circle chi body, straight board chi, semi-circular through-hole, effectively solves current ruler function singleness, carries inconveniently, and the security is lower, and when using, needs frequent change, the waste time, the plotting inefficiency influences teacher's teaching effect scheduling problem.

2. The utility model relates to a rationally, the function is various, and the teacher of being convenient for draws the figure of multiple difference (if circular, fan-shaped etc.), has assembled multiple teaching aid, and the teacher of being convenient for carries, and it is convenient to deposit, improves teacher's teaching efficiency, has spreading value.

3. Through the matching of the semicircular through hole, the straight board ruler and the semicircular angle scale, the drawing ruler not only can be used as a protractor, but also can be used for drawing fan shapes with different angles, and because the straight board ruler divides the circular through hole into two semicircular through holes which are mutually symmetrical, two fan shapes which are mutually symmetrical can be drawn, thereby being convenient for teaching and showing; or the mutually symmetrical semicircular through holes are utilized to draw two fan-shaped bodies with different angles, so that the teacher can conveniently distinguish different fan-shaped angles in class, the operation is convenient, and the method is suitable for wide popularization.

4. The utility model discloses the angle of measurable quantity figure, draw circular, fan-shaped and straightway, the quantity of the drawing instrument that reduces, the simple and convenient of drawing, the vexation that the teacher need frequently change the drawing instrument when drawing that has significantly reduced, safe and reliable should use widely, satisfies the teaching purpose of teacher at the in-process of lessing.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a diagram of a timepiece drawn by the present invention;

fig. 3 is a sector diagram drawn by the present invention;

in the figure: 1. a round ruler body; 2. round angle scales; 3. a timepiece through hole; 4. a reference line; 5. a hollow bore; 6. a straight board ruler; 7. semicircular angle scales; 8. a semicircular through hole; 9. a clock number.

Detailed Description

In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.

Referring to fig. 1 to 3, the utility model provides a multipurpose round ruler for middle and primary school teaching, which comprises a round ruler body 1, wherein the round ruler body 1 is designed into a circular structure, the periphery of the round ruler body 1 is used for drawing a circle or an arc length, the edge of the round ruler body 1 is provided with a circular angle scale 2, the circular angle scale 2 corresponds to the round ruler body 1, the round ruler body 1 is provided with a circular through hole, the middle part of the circular through hole is provided with a straight ruler 6, the straight ruler 6 is designed into a rectangular structure, the straight ruler 6 is used for drawing a straight line segment, the straight ruler 6 is provided with a corresponding length scale line, which is convenient for drawing according to the length of a required line segment, meanwhile, the middle part of the straight ruler 6 is provided with a rotary button, when the rotary button is used for solving the problem that the existing ruler is attached on a blackboard, the existing ruler is not easy to rotate according to actual needs in the using process, or the existing ruler is difficult to rotate and the, the straight board ruler 6 divides the circular through hole into symmetrical semicircular through holes 8, semicircular angle scales 7 are arranged on the edges of the semicircular through holes 8, the semicircular angle scales 7 correspond to the edges of the semicircular through holes 8, and the semicircular through holes 8, the semicircular angle scales 7 and the straight board ruler 6 can be used as a protractor for measuring the angle number of a graph and can also be used for drawing fan shapes with different angles.

Specifically, the round ruler body 1 and the straight ruler 6 are made of transparent materials. Be convenient for observe circle chi body 1 and the laminating of straight board chi 6 when the blackboard, have the extraneous object adhesion of free from extraneous on the blackboard, conveniently in time clear up, ensure can normal use.

Specifically, the range of the circular angle scale 2 is 0-360 °. Through the combination of the round ruler body 1 and the round angle scales 2, a round or arc shape can be drawn, and the applicability is strong.

Specifically, the range of the semicircular angle scale 7 is 0-180 degrees. Through the cooperation of semicircular through hole 8 and straight board chi 6, can draw out semicircle figure or the fan-shaped within 0~180 on the blackboard, the flexibility of use is stronger.

Specifically, a plurality of clock through holes 3 are arranged on the round ruler body 1 at intervals, the clock through holes 3 are distributed circumferentially, and the clock through holes 3 correspond to the round angle scales 2. With 1 laminating of circle chi body on the blackboard, draw out clock and watch through-hole 3 on the blackboard, according to clockwise filling in proper order in clock and watch through-hole 3 write corresponding clock and watch figure 9, through the combination of clock and watch through-hole 3 and clock and watch figure 9 on the blackboard, be convenient for carry out primary school's mathematics hour, minute and second teaching, it is suitable accurate, convenient to use, it is extensive to use.

Specifically, a circular hollow hole 5 is arranged in the middle of the straight board ruler 6. The circular hollow hole 5 is used for drawing the circle center or the center.

Specifically, the diameter of the hollow hole 5 is 30 mm. When the circle center needs to be drawn, chalk can penetrate through the hollow hole 5 and draw the needed circle center.

Specifically, the straight plate ruler 6 is provided with reference lines 4, and the reference lines 4 are positioned at two sides of the hollow hole 5. By means of the mutual matching of the reference line 4 and the straight plate ruler 6 and the semicircular angle scales 7, the reference line 4 is used as a reference, and specific angles in fan-shaped drawing are convenient to clearly draw.

The utility model discloses a working process does:

when using, with the laminating of circle chi body 1 on the blackboard, draw circular or arc length along the periphery of circle chi body 1, straight board chi 6 is used for drawing the straightway, does also draw parallel line segment through straight board chi 6, through mutually supporting of semi-circular through-hole 8, semi-circular angle scale 7 and straight board chi 6, can use it as the protractor for measure the specific angle of figure, simultaneously, also can be used for drawing the fan-shaped of different angles. The utility model discloses a cooperation design of circle chi body 1, straight board chi 6, semi-circular through-hole 8 effectively overcomes current ruler function singleness, carries inconveniently, and the security is lower, and when using, needs frequent change, the waste time, the plotting inefficiency influences defects such as teacher's teaching effect.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a multi-purpose circle chi is used in middle and primary school's teaching which characterized in that: the round ruler comprises a round ruler body, wherein round angle scales are arranged on the edge of the round ruler body, a round through hole is formed in the round ruler body, a straight plate ruler is arranged in the middle of the round through hole, the straight plate ruler divides the round through hole into symmetrical semi-circular through holes, and semi-circular angle scales are arranged on the edge of the semi-circular through hole.

2. The multipurpose circle ruler for primary and secondary school teaching as claimed in claim 1, wherein: the round ruler body and the straight plate ruler are both made of transparent materials.

3. The multipurpose circle ruler for primary and secondary school teaching as claimed in claim 1, wherein: the range of the circular angle scale is 0-360 degrees.

4. The multipurpose circle ruler for primary and secondary school teaching as claimed in claim 1, wherein: the range of the semicircular angle scales is 0-180 degrees.

5. The multipurpose circle ruler for primary and secondary school teaching as claimed in claim 1, wherein: the circle ruler body is provided with a plurality of clock through holes at intervals, the clock through holes are distributed in a circumferential mode, and the clock through holes correspond to the circle angle scales.

6. The multipurpose circle ruler for primary and secondary school teaching as claimed in claim 1, wherein: and a circular hollow hole is formed in the middle of the straight plate ruler.

7. The multipurpose circle ruler for primary and secondary school teaching of claim 6, wherein: the diameter of the hollow hole is 30 mm.

8. The multipurpose circle ruler for primary and secondary school teaching of claim 6, wherein: datum lines are arranged on the straight plate ruler and located on two sides of the hollow hole.