CN211251993U

CN211251993U - Multifunctional drawing rule for mathematical teaching

Info

Publication number: CN211251993U
Application number: CN201922439544.9U
Authority: CN
Inventors: 江浩然; 童广悦; 聂挺; 王涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-14
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a multifunctional drawing ruler for mathematical education, which comprises an isosceles right triangle ruler, an isosceles right triangle opening, a scale mark, a semicircular connecting block, a semicircular protractor, a through hole and a bearing, a rotating ring matched with the bearing is inserted in an inner ring of the bearing, a connecting rod matched with the rotating ring is inserted in the rotating ring, the front end and the rear end of the connecting rod are both provided with a fastening block which is contacted with the rotating ring, the rear side of the fastening block at the rear end of the connecting rod is provided with a sucker, the front end of the rotating ring is positioned in front of the bearing, one side of the rotating ring is transversely provided with a connecting plate, the front side of the connecting plate is provided with a handle vertical to the connecting plate, the rear end of the rotating ring is positioned at the rear part of the bearing and is vertically provided with an iron ruler which is sleeved on the connecting rod, the chalk box is characterized in that a moving device is sleeved on the iron ruler, and a chalk sleeve perpendicular to the moving device is arranged on the rear side of the moving device. Compared with the prior art, the utility model the advantage lie in: high stability and good use effect.

Description

Multifunctional drawing rule for mathematical teaching

Technical Field

The utility model relates to a drawing rule technical field specifically indicates a multi-functional drawing rule that mathematical education used.

Background

The asymmetric ruler of the ruler is a tool for drawing line segments (particularly straight) and measuring the length, scales are usually arranged on the ruler for measuring the length, holes in special shapes such as letters or circles are reserved in the middle of some rulers, drawing is convenient for users, the requirements and standards of the ruler used in different occasions are different, if the required numerical value is more accurate, higher technology is needed, the ruler is manufactured by means of machine production, except that the required numerical value is accurate, the second key point is the quality of the carved numerical value, a protective film is generally burnt up after the carved numerical value, the third point is material selection, and the ruler is divided into plastic, metal and wood rulers at times. The plastic ruler is mainly used by general students for stationery, the metal ruler is more used in industry, and the wooden ruler is mainly used for teaching. Drawing rules are often used during mathematical education. When the drawing rule in the prior art is used, the stability is not only low, the drawing rule is easy to shake in the process of drawing straight lines and circles, the drawing is inaccurate, the function is single, the using effect is not good, the operation is complex, and the drawing rule is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above technical defect, provide a multi-functional drawing rule that mathematical education used that stability is high, excellent in use effect.

In order to solve the technical problem, the utility model provides a technical scheme does: a multifunctional drawing rule for mathematics teaching comprises an isosceles right triangular rule, wherein an isosceles right triangular rule opening is arranged in the middle of the isosceles right triangular rule, a scale mark is arranged between the isosceles right triangular rule and the isosceles right triangular rule opening, a semicircular connecting block tangent to the isosceles right triangular rule opening is arranged in the middle of the bottom surface of the isosceles right triangular rule opening, a semicircular protractor matched with the semicircular connecting block is arranged at the upper end of the semicircular connecting block, a through hole is formed between the semicircular connecting block and the semicircular protractor, a bearing is arranged in the through hole, a rotating ring matched with the bearing is inserted into an inner ring of the bearing, a connecting rod matched with the bearing is inserted into the rotating ring, fastening blocks contacted with the rotating ring are arranged at the front end and the rear end of the connecting rod, a sucking disc is arranged at the rear side of the fastening block at the rear end of the connecting rod, a connecting plate is arranged at the front end of the bearing, the front side of connecting plate is equipped with rather than vertically handle, the rear end that rotates the circle is located the rear of bearing and vertically is equipped with the iron ruler, the iron ruler cup joints on the connecting rod, the mobile device has been cup jointed on the iron ruler, the rear side of mobile device is equipped with rather than vertically chalk cover.

Compared with the prior art, the utility model the advantage lie in: the utility model discloses a multi-functional drawing rule that mathematical education used utilizes the sucking disc can fix the drawing rule, can prevent like this that the in-process of drawing rocks, has improved stability; the matching of the bearing and the sucker can prevent the drawing rule from shaking when drawing circles, so that the stability is improved; the position of the chalk can be quickly adjusted and fixed by the moving device, so that circles with different diameters can be drawn, and the using effect is improved.

As the improvement, mobile device is including setting up the movable plate at iron ruler rear side, the front side of movable plate is equipped with the joint board of two symmetric distributions, and two joint boards are perpendicular and are located the both sides of iron ruler respectively with the movable plate, and horizontal grafting has rather than threaded connection's screw thread carriage release lever on one of them joint board, be equipped with the mounting plate with the movable plate contact in the one end that is close to the iron ruler on the screw thread carriage release lever, the other end of screw thread carriage release lever is equipped with the turning block, is convenient for draw out the circle of different diameters like this.

As an improvement, the middle of the front side of the other clamping plate is transversely provided with a calibration line, so that the diameter of a circle can be accurately measured.

As an improvement, a rubber pad is arranged on one side, close to the iron ruler, of the fastening plate, so that the iron ruler can be prevented from being damaged by extrusion, and the service life of the iron ruler is prolonged.

As an improvement, the isosceles right triangle opening is provided with two magnets matched with the iron ruler for use, so that the iron ruler is convenient to fix when no circle is drawn.

Drawings

Fig. 1 is a schematic structural view of the multifunctional drawing ruler for mathematical education of the present invention.

Fig. 2 is a rear view of the multifunctional drawing rule for mathematics teaching of the present invention.

Fig. 3 is a schematic structural view of the multifunctional drawing rule for mathematics teaching of the present invention in a use state.

As shown in the figure: 1. isosceles right triangle set square, 2, semi-circular protractor, 3, connecting plate, 4, magnet, 5, handle, 6, semi-circular connecting block, 7, iron ruler, 8, joint board, 9, mounting plate, 10, movable plate, 11, screw movable rod, 12, turning block, 13, mobile device, 14, turning ring, 15, bearing, 16, mounting block, 17, through-hole, 18, chalk cover, 19, sucking disc, 20, scale mark, 21, isosceles right triangle opening, 22, calibration line.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A multifunctional drawing ruler for mathematical education comprises an isosceles right triangular ruler 1, wherein an isosceles right triangular opening 21 is arranged in the middle of the isosceles right triangular ruler 1, a scale mark 20 is arranged between the isosceles right triangular ruler 1 and the isosceles right triangular opening 21, a semicircular connecting block 6 tangent to the isosceles right triangular opening 21 is arranged in the middle of the bottom surface of the isosceles right triangular opening 21, a semicircular protractor 2 matched with the semicircular connecting block 6 is arranged at the upper end of the semicircular connecting block 6, a through hole 17 is arranged between the semicircular connecting block 6 and the semicircular protractor 2, a bearing 15 is arranged in the through hole 17, a rotating ring 14 matched with the bearing 15 is inserted into an inner ring of the bearing 15, a connecting rod matched with the rotating ring 14 is inserted into the rotating ring 14, fastening blocks 16 contacted with the rotating ring 14 are arranged at the front end and the rear end of the connecting rod, and a sucking disc 19 is arranged at the rear side of the fastening block 16, rotate the place ahead that the front end of circle 14 is located bearing 15 and one side and transversely be equipped with connecting plate 3, the front side of connecting plate 3 is equipped with rather than vertically handle 5, the rear end that rotates circle 14 is located bearing 15's rear and vertical iron ruler 7 that is equipped with, iron ruler 7 cup joints on the connecting rod, mobile device 13 has been cup jointed on the iron ruler 7, mobile device 13's rear side is equipped with rather than vertically chalk cover 18.

Mobile device 13 is including setting up movable plate 10 at iron ruler 7 rear side, the front side of movable plate 10 is equipped with the joint board 8 of two symmetric distributions, and two joint boards 8 are perpendicular and are located the both sides of iron ruler 7 respectively with movable plate 10, and horizontal grafting has the screw thread carriage release lever 11 rather than threaded connection on one of them joint board 8, be equipped with the mounting plate 9 with movable plate 10 contact in the one end that is close to iron ruler 7 on the screw thread carriage release lever 11, the other end of screw thread carriage release lever 11 is equipped with turning block 12.

The other clamping plate 8 is transversely provided with a calibration line 22 in the middle of the front side.

And a rubber pad is arranged on one side of the fastening plate 9 close to the iron ruler 7.

And the isosceles right triangle opening 21 is provided with two magnets 4 matched with the iron ruler 7 for use.

The utility model discloses when concrete implementation, combine the structural schematic under the multi-functional drawing rule user state that figure 3 mathematical education used to know, the utility model discloses a multi-functional drawing rule that mathematical education used if do not need the drawing circle at the teaching in-process when using, can rotate the rear side of one of them magnet 4 with iron ruler 7 and fix, can prevent like this that iron ruler 7 from rocking, influences the teacher and draws, has improved the result of use when improving stability. When using isosceles right triangle 1 to draw the straight line, can make strength press the fastening block 16 of connecting rod front end backward, can make sucking disc 19 adsorb on the blackboard like this to draw required straight line, use after having drawn pull out can, not only improved stability, improved the quality of drawing, easy operation, convenient to use moreover. When needs draw the angle, at first utilize isosceles right set square 1 to draw the straight line, then the isosceles right set square 1 that slides down makes the bottom of semi-circular protractor 2 and the sharp coincidence of drawing well, then find corresponding angle draw can, the function is diversified, convenient to use. When a circle needs to be drawn, firstly, the iron straight ruler 7 is separated from the magnet 4, chalk is inserted into the chalk sleeve 18, and then the position of the chalk sleeve 18 is adjusted according to requirements. When adjusting the position of chalk cover 18, at first manual forward rotation screw thread carriage release lever 11 makes mounting plate 9 keep away from iron ruler 7, can increase the distance between mounting plate 9 and another joint board 8 like this to can slide mobile device 13 from top to bottom, can drive chalk cover 18 from this and reciprocate, thereby can draw the circle of different diameters, improve and use the flexibility. The use of the calibration line 22 on the other card 8 facilitates calibration of the radius of the circle to be drawn, thereby improving the accuracy of the drawing. After the radius of the required circle is determined, the threaded moving rod 11 is manually rotated in the reverse direction again, so that the fastening plate 9 is close to the iron ruler 7, the distance between the fastening plate 9 and the other clamping plate 8 can be reduced, the moving device 13 is tightly fixed on the iron ruler 7, and the using effect is improved while the stability is improved. During drawing a circle, at first make strength press the fastening block 16 of connecting rod front end backward, can make sucking disc 19 adsorb on the blackboard like this, then hold isosceles right triangle ruler 1 on the other hand, handle 5 is held to the other hand and clockwise or anticlockwise rotates, under the cooperation of bearing 15 and connecting rod, it can drive iron ruler 7 and rotate together to rotate to drive chalk cover 18 and rotate, not only can accomplish the work of drawing a circle, and can guarantee the degree of roundness of circle, drawing quality and result of use have been improved. So said the utility model discloses a multi-functional drawing rule that mathematical education used not only stability is high, excellent in use effect moreover.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a multi-functional drawing rule that mathematical education used, includes isosceles right set square (1), the centre of isosceles right set square (1) is equipped with isosceles right triangle opening (21), be equipped with scale mark (20), its characterized in that between isosceles right set square (1) and isosceles right triangle opening (21): the middle of the bottom surface of the isosceles right triangle opening (21) is provided with a semicircular connecting block (6) tangent to the isosceles right triangle opening, the upper end of the semicircular connecting block (6) is provided with a semicircular protractor (2) matched with the semicircular protractor for use, a through hole (17) is formed between the semicircular connecting block (6) and the semicircular protractor (2), a bearing (15) is arranged in the through hole (17), a rotating ring (14) matched with the bearing for use is inserted in the inner ring of the bearing (15), a connecting rod matched with the bearing for use is inserted in the rotating ring (14), fastening blocks (16) contacted with the rotating ring (14) are arranged at the front end and the rear end of the connecting rod, a sucking disc (19) is arranged at the rear side of the fastening block (16) at the rear end of the connecting rod, the front end of the rotating ring (14) is positioned in front of the bearing (15, the front side of connecting plate (3) is equipped with rather than vertically handle (5), the rear end that rotates circle (14) is located the rear of bearing (15) and vertical is equipped with iron ruler (7), iron ruler (7) cup joint on the connecting rod, mobile device (13) have been cup jointed on iron ruler (7), the rear side of mobile device (13) is equipped with rather than vertically chalk cover (18).

2. A multi-functional drawing rule for mathematics teaching according to claim 1, characterized in that: remove device (13) including setting up movable plate (10) at iron ruler (7) rear side, the front side of movable plate (10) is equipped with joint board (8) of two symmetric distributions, and two joint boards (8) are perpendicular and are located the both sides of iron ruler (7) respectively with movable plate (10), and horizontal grafting has screw thread carriage release lever (11) rather than threaded connection on one of them joint board (8), be equipped with fastening plate (9) with movable plate (10) contact in the one end that is close to iron ruler (7) on screw thread carriage release lever (11), the other end of screw thread carriage release lever (11) is equipped with turning block (12).

3. A multi-functional drawing rule for mathematics teaching according to claim 2, characterized in that: the middle of the front side of the other clamping plate (8) is transversely provided with a calibration line (22).

4. A multi-functional drawing rule for mathematics teaching according to claim 2, characterized in that: and a rubber pad is arranged on one side of the fastening plate (9) close to the iron ruler (7).

5. A multi-functional drawing rule for mathematics teaching according to claim 1, characterized in that: and the isosceles right triangle opening (21) is provided with two magnets (4) matched with the iron ruler (7) for use.