CN210570299U

CN210570299U - Mathematics teaching demonstration ware

Info

Publication number: CN210570299U
Application number: CN201921397809.7U
Authority: CN
Inventors: 璧典腹; 赵丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-19
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a mathematical education demonstrator, which comprises a protractor body, wherein the central axis of the bottom of the protractor body is connected with a bolt, a gasket is laid between the bolt and the protractor body, the outside of the concentric axis of the bolt is fixedly connected with a stopper, the outside of the concentric axis of the bolt is movably connected with a nut positioned at one side of the stopper, a spring is arranged between the nut and the stopper, one side of the nut is fixedly connected with a connecting rod, the central axis of the connecting rod is provided with a through strip, the outer surface of the outer side of the connecting rod is provided with a first slide rail positioned at one side of the through strip, the outside of the connecting rod is movably connected with a first block body, the inner side of the first block body is fixedly connected with a first slide block at the position corresponding to the first slide rail, one end of the first block body is fixedly connected with a second, convenient and practical and simple structure.

Description

Mathematics teaching demonstration ware

Technical Field

The utility model relates to a teaching equipment technical field especially relates to a mathematical education demonstration ware.

Background

One of mathematics teaching demonstration ware during protractor, as the apparatus of drawing, common material is plastics or iron, can draw the angle that will as required, often uses together with the compasses, can draw angle, angulation, drawing perpendicular line, parallel lines, survey the gradient, hang down straightness, levelness, can work as inside and outside right angle turning chi, opens, folds, can also can more confirm directly perceived reading as the length ruler to draw the circle of regulation size, three kinds of types can be made to the product: A. the protractor is a small stationery practical for students in high, middle and primary schools; the type B teaching aid is applied to teachers in schools; the C-shaped tool is applied to factories, workshops, woodworkers, technicians, repairmers and the like.

The protractor that mr used in the classroom generally is wood system, at first need press the protractor on the blackboard with both hands when drawing the angle, draws the angle simultaneously, and the operation is very inconvenient, in addition, because of the reason of staff, the emergence deviation is difficult to avoid when drawing and leads to redrawing because of the unstability even, wastes time and energy, seriously influences the efficiency in classroom and the progress of going to class.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a mathematical education demonstrator.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a mathematical teaching demonstration device comprises a protractor body, wherein a bolt is connected with the central axis of the bottom of the protractor body, a gasket is laid between the bolt and the protractor body, a limiting block is fixedly connected with the outer side of the concentric axis of the bolt, a nut is movably connected with the outer side of the concentric axis of the bolt and positioned at one side of the limiting block, a spring is arranged between the nut and the limiting block, a connecting rod is fixedly connected with one side of the nut, a penetrating strip is arranged on the central axis of the connecting rod, a first slide rail is arranged on the outer surface of the outer side of the connecting rod and positioned at one side of the penetrating strip, a first block body is movably connected with the outer side of the connecting rod, a first slide block is fixedly connected with the inner side of the first block body at a position corresponding to the first slide rail, the outer surface of the outer side of the connecting rod corresponds to the second sliding block and is provided with a second sliding rail, the inside of the second square block is fixedly connected with chalk, and the outer wall of the bottom of the protractor body is fixedly connected with a magnet device.

As a further description of the above technical solution:

the protractor main body is of a hollow structure, and the height of the connecting rod is smaller than the inner circle radius of the protractor main body.

As a further description of the above technical solution:

the gasket is cut and formed by a rubber non-slip mat.

As a further description of the above technical solution:

the bolt, the limiting block, the nut and the spring form a limiting rotating shaft device.

As a further description of the above technical solution:

the first slide rails and the second slide rails are respectively arranged on the front side and the back side of the connecting rod, the number of the first slide rails is two, the two groups of first slide rails are symmetrical relative to the central axis of the connecting rod, and the length and the width of the first slide rails are equal to those of the second slide rails.

As a further description of the above technical solution:

the first square block bodies and the second square block bodies are two in number, and the two sets of first square block bodies and the two sets of second square block bodies are symmetrical about the central axis of the connecting rod.

As a further description of the above technical solution:

the chalk extends to the outside of the second square block body from the inside of the second square block body.

The utility model discloses following beneficial effect has:

1. the utility model provides a mathematical education demonstrator compares with traditional device, has set up magnet through the both ends surface at the protractor main part, and the application of blackboard on the classroom of taking magnetism now is very extensive, passes through the adsorption affinity between the magnet with the protractor main part and fixes on the blackboard, has avoided because the hand is unstable and has taken place the deviation when leading to the mapping and influence the efficiency of going to the lesson.

2. The device compares with traditional device, and its structure and design all have great innovation and improvement, through having set up spacing pivot device, through with the connecting rod cover on the pivot nut, be provided with the spring between nut and the stopper, can be stable fixed with the connecting rod rotating the connecting rod, spur first square block body and second square block body and can draw the straight line that wants at the specified angle, convenient and fast.

Drawings

Fig. 1 is a front view of a mathematical education demonstrator provided by the utility model;

fig. 2 is a rear view of the mathematical education demonstration device provided by the utility model;

FIG. 3 is a top view of a connecting structure of a connecting rod and a first and a second square block;

fig. 4 is a schematic view of a connection structure of the limit rotating shaft.

Illustration of the drawings:

1. a protractor body; 2. a first block body; 3. a bolt; 4. a first slide rail; 5. a through-penetration strip; 6. a connecting rod; 7. a magnet device; 8. chalk; 9. a second cube; 10. a second slide rail; 11. a first slider; 12. a second slider; 13. a gasket; 14. a nut; 15. a spring; 16. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a mathematical teaching demonstrator comprises a protractor body 1, wherein a bolt 3 is connected with the central axis of the bottom of the protractor body 1, a gasket 13 is laid between the bolt 3 and the protractor body 1, a stopper 16 is fixedly connected with the outer side of the concentric axis of the bolt 3, a nut 14 is movably connected with the outer side of the concentric axis of the bolt 3 and positioned at one side of the stopper 16, a spring 15 is arranged between the nut 14 and the stopper 16, a connecting rod 6 is fixedly connected with one side of the nut 14, a through strip 5 is arranged on the central axis of the connecting rod 6, a first slide rail 4 is arranged on the outer surface of the outer side of the connecting rod 6 and positioned at one side of the through strip 5, a first block body 2 is movably connected with the outer side of the connecting rod 6, a first slide block 11 is fixedly connected with the inner side of the first block body 2 corresponding to the first slide rail 4, the outer surface of the outer side of the connecting rod 6 corresponds to the second sliding block 12 and is provided with a second sliding rail 10, the inside of the second square block 9 is fixedly connected with chalk 8, and the outer wall of the bottom of the protractor body 1 is fixedly connected with a magnet device 7.

The protractor main body 1 is of a hollow structure, the height of the connecting rod 6 is smaller than the radius of the inner circle of the protractor main body 1, the connecting rod 6 is prevented from touching the protractor main body 1, drawing is facilitated, the gasket 13 is formed by shearing a rubber anti-skid pad which has abrasion resistance, pressure resistance and certain elasticity, the bolt 3, the limiting block 16, the nut 14 and the spring 15 form a limiting rotating shaft device, the connecting rod 6 can be conveniently rotated to a specified angle and can be fixed, the first sliding rail 4 and the second sliding rail 10 are respectively arranged on the front and back sides of the connecting rod 6, the number of the first sliding rail 4 is two, the two groups of the first sliding rail 4 are symmetrical about the central axis of the connecting rod 6, the length and the width of the first sliding rail 4 are equal to those of the second sliding rail 10, the first square block 2 and the second square block 9 can conveniently slide on the first sliding rail 4 and the second sliding rail 10, the two groups of the first square block bodies 2 and the second square block bodies 9 are symmetrical about the central axis of the connecting rod 6, and the chalks 8 extend from the inner part of the second square block body 9 to the outer part of the second square block body 9, so that the chalks 8 can be conveniently drawn on a blackboard.

The working principle is as follows: the utility model provides a mathematical education demonstrator has great improvement innovation with traditional device, the one side alignment with protractor main part 1 has magnet device 7 takes the magnetic blackboard, because the adsorption affinity between the magnet, protractor main part 1 be fixed in with the blackboard on, begin the mapping, rotate connecting rod 6 according to appointed angle, nut 14 of being connected with connecting rod 6 rotates on bolt 3, because be provided with spring 15 between stopper 16 and the nut 14 can fixed link 6 in the pivoted, stopper 16 makes connecting rod 6's rotation range restriction between 0-180, reach appointed angle, the pulling is by first square block body 2 and second square block body 9, chalk 8 of being connected on second square block body 9 can draw out required straight line and contained angle.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A mathematics teaching demonstration ware, includes protractor body (1), its characterized in that: the protractor is characterized in that a bolt (3) is connected to the central axis of the bottom of the protractor body (1), a gasket (13) is laid between the bolt (3) and the protractor body (1), a limiting block (16) is fixedly connected to the outer side of the concentric axis of the bolt (3), a nut (14) is movably connected to the outer side of the concentric axis of the bolt (3) and positioned on one side of the limiting block (16), a spring (15) is arranged between the nut (14) and the limiting block (16), a connecting rod (6) is fixedly connected to one side of the nut (14), a penetrating strip (5) is arranged on the central axis of the connecting rod (6), a first sliding rail (4) is arranged on the outer surface of the outer side of the connecting rod (6) and positioned on one side of the penetrating strip (5), a first square block body (2) is movably connected to the outer side of the connecting rod (6), and, the protractor is characterized in that one end of the first square block body (2) is fixedly connected with a second square block body (9), the inner wall of the inner side of the second square block body (9) is fixedly connected with a second sliding block (12), the outer surface of the outer side of the connecting rod (6) corresponds to the second sliding block (12) and is provided with a second sliding rail (10), the inner part of the second square block body (9) is fixedly connected with chalk (8), and the outer wall of the bottom of the protractor body (1) is fixedly connected with a magnet device (7).

2. A mathematical education presenter as claimed in claim 1, wherein: the protractor main body (1) is of a hollow structure, and the height of the connecting rod (6) is smaller than the inner circle radius of the protractor main body (1).

3. A mathematical education presenter as claimed in claim 1, wherein: the gasket (13) is cut and formed by a rubber anti-skid pad.

4. A mathematical education presenter as claimed in claim 1, wherein: the bolt (3), the limiting block (16), the nut (14) and the spring (15) form a limiting rotating shaft device.

5. A mathematical education presenter as claimed in claim 1, wherein: the first sliding rails (4) and the second sliding rails (10) are respectively arranged on the front side and the back side of the connecting rod (6), the number of the first sliding rails (4) is two, the two groups of first sliding rails (4) are symmetrical about the central axis of the connecting rod (6), and the length and the width of the first sliding rails (4) are equal to that of the second sliding rails (10).

6. A mathematical education presenter as claimed in claim 1, wherein: the number of the first square block bodies (2) and the number of the second square block bodies (9) are two, and the two sets of the first square block bodies (2) and the second square block bodies (9) are symmetrical about the central axis of the connecting rod (6).

7. A mathematical education presenter as claimed in claim 1, wherein: the chalk (8) extends from the inside of the second square block body (9) to the outside of the second square block body (9).