CN219076892U

CN219076892U - Mathematical education diagraph

Info

Publication number: CN219076892U
Application number: CN202320032133.1U
Authority: CN
Inventors: 张明国
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-05-26
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses a mathematical education diagraph, which relates to the technical field of teaching aids and comprises a protractor, a first ruler and a second ruler, wherein a rotating rod is fixedly arranged in the middle of the lower end of the protractor, the first ruler and the second ruler are sequentially sleeved on the rotating rod, a sliding seat is slidably arranged on the first ruler, the top of the sliding seat is in threaded connection with a fixing bolt, an observation window is arranged on the front surface of the sliding seat, an indicating needle is arranged in the observation window, and a positioning hole is formed in the sliding seat. The utility model has simple structure, convenient operation, improved drawing accuracy, meeting various requirements of mathematical education drawing, small volume after integral storage and convenient carrying.

Description

Mathematical education diagraph

Technical Field

The utility model relates to the technical field of teaching aids, in particular to a mathematical teaching diagraph.

Background

Teaching is a human-specific talent training activity consisting of teacher's teaching and student's learning. In teaching this course of data, and in particular in teaching geometry in mathematics, a diagrammer is often required to make the geometry on the blackboard.

At present, when the existing diagraph is actually used, particularly when a part of a special geometric figure is drawn, two rulers are usually needed to be spliced for drawing, and when the drawing is performed, the two rulers are manually fixed, and if a teacher loosens one point, the two rulers are caused to deviate in angle, so that the drawing efficiency is affected, and improvement is needed.

The prior patent (publication number: CN 214564202U) proposes a diagraph for mathematical education, which consists of a ruler A, a ruler B, a rotating rod, a sliding rod, a pressing block and a transmission mechanism, wherein the rotating rod is fixedly arranged on the surface of the ruler A near the edge, the rotating rod is rotationally connected with the surface of the rotating rod, one end of the rotating rod is provided with the sliding rod in a penetrating way, the sliding rod is in sliding connection with the rotating rod, and the pressing block is fixedly arranged at one end of the sliding rod far away from the rotating rod, so that the diagraph is simpler and more convenient, the diagraph efficiency of teachers is effectively improved, the practicability is stronger, the structure is simple, and the cost is low.

The diagraph for mathematical education has the following disadvantages when in use: the angle of the two straight rulers when being unfolded can be judged only according to the experience of a teacher, drawing errors are easy to cause, and the drawing accuracy of the teacher in teaching is reduced; meanwhile, the drawing requirements cannot be met, and the functional defects still exist, so that a mathematical education drawing device is provided for solving the problems.

Disclosure of Invention

The utility model provides a mathematical teaching diagraph, which solves the problems that the angle of two straight rulers can only be judged according to the experience of a teacher when the two straight rulers are unfolded, drawing errors are easy to cause, and the drawing accuracy of teacher teaching is reduced; meanwhile, the method can not meet various drawing requirements, and the technical problem of functional shortcomings still exists.

In order to solve the technical problems, the mathematical education diagraph provided by the utility model comprises a protractor, a first ruler and a second ruler, wherein a rotating rod is fixedly arranged in the middle of the lower end of the protractor, the first ruler and the second ruler are sequentially sleeved on the rotating rod, a sliding seat is slidably arranged on the first ruler, the top of the sliding seat is in threaded connection with a fixing bolt, an observation window is arranged on the front surface of the sliding seat, an indicating needle is arranged in the observation window, and a positioning hole is formed in the sliding seat.

Preferably, one end of the first straight ruler, which is far away from the rotating rod, is provided with a limiting block, and the limiting block is fixedly connected with the first straight ruler.

Preferably, the bottom wall of the sliding seat is connected with a positioning bolt in a threaded manner, and the end part of the positioning bolt extends into the positioning hole.

Preferably, the through hole that supplies the bull stick to pass is all offered to the tip of first ruler and second ruler, the spout has all been offered to one side that first ruler and second ruler are close to the through hole, the inside slidable mounting of spout has the slider, the slipmat is installed to one side that the slider extends to in the through hole, the outer wall cover of bull stick is equipped with the antiskid cover, the slipmat offsets with the antiskid cover, supporting spring is installed to one side that the slipmat was kept away from to the slider, supporting spring's the other end and the inner wall connection of spout, the pull rod is installed in the front of slider, the pull rod top extends to the outside of spout.

Preferably, the sucker is installed to the one end that the protractor was kept away from to the bull stick, the sucker is the silica gel material.

Preferably, the anti-skidding sleeve and the anti-skidding pad are made of rubber materials, and anti-skidding lines are formed on the outer surfaces of the anti-skidding sleeve and the anti-skidding pad.

Preferably, the through hole has an outer diameter larger than that of the rotating rod.

Preferably, the front surfaces of the protractor, the first ruler and the second ruler are provided with scale marks.

Compared with the related art, the mathematical education diagraph provided by the utility model has the following beneficial effects:

1. according to the utility model, the positions of the first ruler and the second ruler are read through the protractor, the opening and closing angle between the first ruler and the second ruler can be accurately controlled, and then an accurate graph is drawn, meanwhile, the chalk is arranged in the positioning hole formed in the sliding seat, the sucking disc is adsorbed on the blackboard, the first ruler is rotated to draw a circular pattern on the blackboard, various requirements of mathematical teaching drawing are met, and the blackboard is small in size and convenient to carry after the whole storage.

2. According to the utility model, the sliding block can be pushed to drive the anti-slip pad to tightly abut against the anti-slip sleeve sleeved on the outer wall of the rotating rod through the elasticity of the supporting spring, and at the moment, due to the friction force between the anti-slip pad and the anti-slip pad, the angles of the first ruler and the second ruler are further increased, so that the first ruler and the second ruler are prevented from being deviated in position in the drawing process, and the use of teaching staff is facilitated.

Drawings

FIG. 1 is a schematic diagram of the front view of a mathematical education diagraph;

FIG. 2 is a schematic diagram of a rear view of a mathematical education diagraph;

FIG. 3 is a schematic cross-sectional view of a first ruler of the mathematical education diagraph;

fig. 4 is an enlarged view of the structure at a in fig. 1.

Reference numerals in the drawings: 1. an angle gauge; 2. a first ruler; 3. a second ruler; 4. a rotating rod; 5. a slide; 6. a fixing bolt; 7. an observation window; 8. an indicator needle; 9. positioning holes; 10. positioning bolts; 11. a limiting block; 12. a through hole; 13. an anti-skid sleeve; 14. a chute; 15. a slide block; 16. an anti-slip pad; 17. a support spring; 18. a pull rod; 19. and a sucking disc.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the indicated apparatus or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The first embodiment is given by fig. 1-4, a mathematical education diagraph, including protractor 1, first ruler 2 and second ruler 3, there is bull stick 4 in protractor 1 lower extreme middle part fixed mounting, first ruler 2 and second ruler 3 cup joint on bull stick 4 in proper order, slidable mounting has slide 5 on the first ruler 2, slide 5 top threaded connection has fixing bolt 6, observation window 7 has been seted up in slide 5 openly, the inside of observation window 7 is provided with pointer 8, locating hole 9 has been seted up on the slide 5, read the position at first ruler 2 and second ruler 3 through protractor 1, but accurate control opening and closing angle between first ruler 2 and the second ruler 3, and then draw accurate figure, install the chalk in the locating hole 9 of seting up on slide 5 simultaneously, rotate first ruler 2 and draw circular pattern on the blackboard, satisfy mathematical education diagraph's various demands, and it is small to accomodate the back wholly, it is very convenient to carry.

In addition, in order to avoid sliding of the sliding seat 5 from the first ruler 2, a limiting block 11 is arranged at one end, far away from the rotating rod 4, of the first ruler 2, and the limiting block 11 is fixedly connected with the first ruler 2.

In addition, in order to fix the chalk inside the positioning hole 9, a positioning bolt 10 is screwed to the bottom wall of the slide 5, and the end of the positioning bolt 10 extends into the positioning hole 9.

In the second embodiment, shown in fig. 1-4, a mathematical education diagraph comprises a protractor 1, a first ruler 2 and a second ruler 3, wherein a rotating rod 4 is fixedly arranged in the middle of the lower end of the protractor 1, the first ruler 2 and the second ruler 3 are sequentially sleeved on the rotating rod 4, a sliding seat 5 is slidably arranged on the first ruler 2, a fixing bolt 6 is in threaded connection with the top of the sliding seat 5, an observation window 7 is arranged on the front surface of the sliding seat 5, an indicator needle 8 is arranged in the observation window 7, a positioning hole 9 is arranged on the sliding seat 5, through holes 12 for the rotating rod 4 to pass through are respectively arranged at the end parts of the first ruler 2 and the second ruler 3, sliding grooves 14 are respectively arranged on one sides of the first ruler 2 and the second ruler 3 close to the through holes 12, sliding blocks 15 are slidably arranged in the sliding grooves 14, the slide block 15 extends to one side in the through hole 12 and installs slipmat 16, the outer wall cover of bull stick 4 is equipped with antiskid cover 13, slipmat 16 offsets with slipmat 13, supporting spring 17 is installed to one side that the slide block 15 kept away from slipmat 16, supporting spring 17's the other end and the inner wall connection of spout 14, pull rod 18 is installed in the front of slide block 15, the outside that the pull rod 18 top extends to spout 14 can promote the slide block 15 through supporting spring 17's elasticity and drive slipmat 16 and the slipmat 13 that the cover was established on the bull stick 4 outer wall tightly support, at this moment because frictional force between antiskid cover 13 and the slipmat 16, and then the angle of first ruler 2 and second ruler 3 avoids appearing the position offset at the in-process of drawing, make things convenient for the teaching personnel to use.

In addition, in order to make things convenient for teaching personnel to fix the diagraph at the blackboard when drawing, avoid the diagraph to appear the offset when using, sucking disc 19 is installed to the one end that the protractor 1 was kept away from to bull stick 4, and sucking disc 19 is the silica gel material.

In addition, in order to increase the frictional force between the outer walls of the sliding block 15 and the rotating rod 4, the anti-slip sleeve 13 and the anti-slip pad 16 are made of rubber materials, and anti-slip lines are arranged on the outer surfaces of the anti-slip sleeve 13 and the anti-slip pad 16.

In order to allow the first ruler 2 and the second ruler 3 to rotate on the rotating rod 4, the outer diameter of the through hole 12 can be larger than the outer diameter of the rotating rod 4.

In addition, in order to make things convenient for teaching personnel to draw the figure according to the demand, the front of protractor 1, first ruler 2 and second ruler 3 all is provided with the scale mark.

Working principle: when the novel blackboard is used, a first ruler 2 and a second ruler 3 are utilized to draw a straight line on a blackboard, the first ruler 2 and the second ruler 3 can rotate along the rotating rod 4, the position of the first ruler 2 and the position of the second ruler 3 can be read through the protractor 1, the opening and closing angle between the first ruler 2 and the second ruler 3 can be accurately controlled, then an accurate graph is drawn, meanwhile, a chalk is installed in a positioning hole 9 formed in the sliding seat 5, a sucking disc 19 is adsorbed on the blackboard, the first ruler 2 is rotated to draw a circular pattern on the blackboard, various requirements of mathematical teaching drawing are met, the whole storage is small in size, the novel blackboard is very convenient to carry, the sliding block 15 can be pushed by the elasticity of the supporting spring 17 to drive the anti-slip sleeve 13 sleeved on the outer wall of the rotating rod 4, at this moment, the position deviation of the first ruler 2 and the second ruler 3 can be avoided in the drawing process due to the friction force between the anti-slip sleeve 13 and the anti-slip pad 16, and the supporting spring 17 can be conveniently used by the teaching staff, and the first ruler 2 and the second ruler 3 can be conveniently separated by the supporting spring 17 to be compressed by the supporting spring 17, and the anti-slip sleeve 3 can be conveniently adjusted by the teaching staff.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mathematical education diagraph, includes protractor (1), first ruler (2) and second ruler (3), its characterized in that, protractor (1) lower extreme middle part fixed mounting has bull stick (4), first ruler (2) and second ruler (3) cup joint in proper order on bull stick (4), slidable mounting has slide (5) on first ruler (2), slide (5) top threaded connection has fixing bolt (6), observation window (7) have been seted up openly to slide (5), the inside of observation window (7) is provided with pilot pin (8), locating hole (9) have been seted up on slide (5).

2. The mathematical education diagraph according to claim 1, wherein a limiting block (11) is arranged at one end of the first ruler (2) far away from the rotating rod (4), and the limiting block (11) is fixedly connected with the first ruler (2).

3. A mathematical education diagraph according to claim 1 wherein the slide (5) is threaded with a locating bolt (10) on the bottom wall, the end of the locating bolt (10) extending into the locating hole (9).

4. The mathematical education diagraph according to claim 1, characterized in that the through holes (12) through which the rotating rod (4) passes are respectively formed in the end parts of the first ruler (2) and the second ruler (3), the sliding grooves (14) are respectively formed in one sides of the first ruler (2) and the second ruler (3) close to the through holes (12), the sliding blocks (15) are slidably mounted in the sliding grooves (14), the sliding pads (16) are mounted on one sides of the sliding blocks (15) extending to the through holes (12), the sliding sleeves (13) are sleeved on the outer walls of the rotating rod (4), the sliding pads (16) are abutted against the sliding sleeves (13), the supporting springs (17) are mounted on one sides of the sliding blocks (15) away from the sliding pads (16), the other ends of the supporting springs (17) are connected with the inner walls of the sliding grooves (14), and the pull rods (18) are mounted on the front surfaces of the sliding blocks (15) and extend to the outer sides of the sliding grooves (14).

5. The mathematical education diagraph according to claim 1, wherein the sucker (19) is installed at one end of the rotating rod (4) far away from the protractor (1), and the sucker (19) is made of silica gel.

6. The mathematical education diagraph according to claim 4, wherein the anti-slip cover (13) and the anti-slip pad (16) are made of rubber, and anti-slip lines are provided on the outer surfaces of the anti-slip cover (13) and the anti-slip pad (16).

7. A mathematical education diagraph according to claim 4 wherein the through hole (12) has an outer diameter greater than the outer diameter of the rotating rod (4).

8. A mathematical education diagraph according to claim 1 wherein the faces of the protractor (1), the first ruler (2) and the second ruler (3) are provided with graduation marks.