CN211808692U

CN211808692U - Drawing tool for mathematical modeling

Info

Publication number: CN211808692U
Application number: CN202020390116.1U
Authority: CN
Inventors: 赵娜; 张庆胜; 郝祥晖; 段志霞
Original assignee: Jiyuan Vocational and Technical College
Current assignee: Jiyuan Vocational and Technical College
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-10-30
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses a drawing instrument for mathematical modeling relates to teaching equipment technical field. The utility model discloses a compasses activity foot, connecting axle and set-square, the rear end face welding of set-square has the engaging lug, the welding has the connecting axle in the middle of the positive terminal surface of engaging lug, compasses activity foot includes stabilizer blade and second installation ear, the welding of second installation ear is in the one end of stabilizer blade, the second through-hole has been seted up on the second installation ear, the draw-in groove has been seted up to the other end intermediate position of stabilizer blade, second installation ear cup joints on the connecting axle through the second through-hole, the connecting axle includes second external thread post, the pivot, gasket and second nut, the welding of second external thread post is at the preceding terminal surface of pivot. The utility model discloses a set up connecting axle, set-square, stabilizer blade, second installation ear and pivot structure, can make the user adjust the position of stabilizer blade, and then the distance between adjustable stabilizer blade and the set-square one end, and then can draw the circle of variation in size, improved the utility model discloses an adaptability.

Description

Drawing tool for mathematical modeling

Technical Field

The utility model belongs to the technical field of the teaching equipment, especially, relate to a drawing instrument for mathematical modeling.

Background

Teaching is a human-specific talent training activity consisting of teacher's teaching and student's learning. Through the activities, teachers purposefully, programmatically and organically guide students to learn and master cultural scientific knowledge and skills, and promote the improvement of the qualities of the students, so that the students become people required by the society. In the teaching process of mathematics, can use the instrument of drawing, the teacher models through the instrument of drawing, make mathematical education more directly perceived, the teacher's of also being convenient for explanation, however, the user can't adjust the position of the circular shape structure of drawing in the instrument of drawing of current mathematics, and lead to the user can not use the instrument of drawing of current mathematics to draw the circle of difference in size, and then the work of giving the user brings inconvenience, and then the suitability of the instrument of drawing of mathematics has been reduced, and then the popularization of the instrument of drawing of mathematics of being not convenient for, therefore it is necessary to improve, in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mathematical modeling is with instrument of drawing, through, solved current mathematics instrument of drawing can not draw circular and reduced the mathematics instrument of drawing suitability problem not of uniform size according to user's actual need.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a drawing tool for mathematical modeling, which comprises a compass movable foot, a connecting shaft and a triangular plate, wherein the rear end face of the triangular plate is welded with a connecting lug, so that the stability of the connecting lug on the triangular plate is improved, the connecting shaft is welded in the middle of the positive end face of the connecting lug, so that the stability of the connecting shaft on the connecting lug is improved, the compass movable foot comprises a supporting leg and a second mounting lug, the second mounting lug is welded at one end of the supporting leg, so that the stability of the second mounting lug on the supporting leg is improved, a second through hole is arranged on the second mounting lug, a clamping groove is arranged at the middle position of the other end of the supporting leg, the second mounting lug is sleeved on the connecting shaft through the second through hole, the connecting shaft comprises a second external thread column, a shaft pin, a gasket and a second nut, the second external thread column is welded on the front, the stability of second external thread post on the pivot has been promoted like this, second nut threaded connection is on second external thread post, makes the second nut when receiving external force like this, and the second nut can rotate on second external thread post, the gasket cup joints on the pivot.

Further, the one end of set square is connected with the ruler board, the lower left corner of set square is connected with first installation ear, first through-hole has been seted up on the first installation ear, the welding of the positive terminal surface lower part of ruler board has first external screw thread post, has promoted the stability of first external screw thread post on the ruler board like this, first external screw thread post runs through first installation ear through first through-hole.

Further, the external diameter of first external screw thread post is less than the internal diameter of first through-hole size, and the first external screw thread post of being convenient for passes first through-hole like this, and then is convenient for first external screw thread post to run through first installation ear, threaded connection has first nut on the first external screw thread post, the external diameter of first nut is greater than the internal diameter of first through-hole size, can prevent like this that first nut from passing first through-hole.

Furthermore, scale marks are carved on the ruler plate, scale marks are carved on the triangle plate, and scale marks are carved on the first mounting lug.

Further, the outer diameter of the second external thread column is smaller than the inner diameter of the second through hole, so that the second external thread column can penetrate through the second through hole, the second external thread column can penetrate through the second mounting lug conveniently, the outer diameter of the second nut is larger than the inner diameter of the second through hole, and the second nut can be prevented from penetrating through the second through hole.

Further, the outer diameter of the shaft pin is smaller than the inner diameter of the second through hole, so that the shaft pin can conveniently penetrate through the second through hole, the shaft pin can conveniently penetrate through the second mounting lug, the outer diameter of the gasket is larger than the inner diameter of the second through hole, the gasket can be prevented from penetrating through the second through hole, and the quantity of the gaskets is four.

The utility model discloses following beneficial effect has:

1. the utility model discloses a set up connecting axle, set-square, stabilizer blade, second installation ear and pivot structure, through the pivot that sets up, can make second installation ear rotate on the connecting axle, the angle that forms between adjustable stabilizer blade and the set-square like this, and then the distance between adjustable stabilizer blade and the set-square one end, and then can make the user adjust the distance between stabilizer blade and the set-square one end according to actual need, and then the user's accessible the utility model discloses draw the circle of different diameters, and then can satisfy the circular of user's the different diameters of drawing, and then bring the facility for user's work, and improved the utility model discloses an applicability.

2. The utility model has the advantages that the right first external thread column is welded on the ruler plate by arranging the first mounting lug, the second mounting lug, the first external thread column and the second external thread column structure, the first nut is connected on the first external thread column by screw thread, the first through hole is arranged on the first mounting lug, the first external thread column can penetrate through the first mounting lug by the first through hole, then the first external thread column can be connected with the first mounting lug by the first nut, the ruler plate can be fixedly connected with the triangular plate, the connecting lug is welded on the triangular plate, the connecting shaft is welded on the connecting lug, the second through hole is arranged on the second mounting lug, the second mounting lug can be fixed on the connecting lug by the second nut connected on the connecting shaft, the movable foot of the compasses can be fixed on the triangular plate, and various drawing tools can be connected together, and then the convenient to use person carries, and can prevent that the graphics primitive from placing unordered and making the user not convenient for find corresponding graphics primitive, and then bring the facility for user's work.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a drawing tool for mathematical modeling according to the present invention;

FIG. 2 is a schematic structural view of a movable leg of the compass in the drawing tool for mathematical modeling of the present invention;

FIG. 3 is a schematic structural view of a connection shaft in a drawing tool for mathematical modeling according to the present invention;

FIG. 4 is a schematic structural diagram of a ruler plate of the drawing tool for mathematical modeling according to the present invention;

fig. 5 is the utility model discloses a set-square's in drawing instrument for mathematical modeling structural schematic.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a movable foot of the compasses; 2. a connecting shaft; 3. a set square; 4. scale lines; 5. a ruler plate; 6. connecting lugs; 7. a first mounting ear; 8. a first through hole; 9. a second through hole; 10. a support leg; 11. a card slot; 12. a second mounting ear; 13. a first externally threaded post; 14. a first nut; 15. a second externally threaded post; 16. a shaft pin; 17. a gasket; 18. a second nut.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention relates to a drawing tool for mathematical modeling, which comprises a movable leg 1 of a compass, a connecting shaft 2 and a set square 3, wherein a connecting lug 6 is welded on the rear end face of the set square 3, so that the connecting lug 6 is stably fixed on the set square 3, the connecting shaft 2 is welded in the middle of the positive end face of the connecting lug 6, so that the connecting shaft 2 is stably fixed on the connecting lug 6, the movable leg 1 of the compass comprises a supporting leg 10 and a second mounting lug 12, the second mounting lug 12 is welded on one end of the supporting leg 10, so that the second mounting lug 12 is stably fixed on the supporting leg 10, a second through hole 9 is formed on the second mounting lug 12, a clamping groove 11 is formed in the middle position of the other end of the supporting leg 10, the clamping groove 11 is used for clamping a chalk, the second mounting lug 12 is sleeved on the connecting shaft 2 through the second through hole 9, so that the second mounting lug 12, and then can make the supporting foot 10 connect on the connecting axle 2, the connecting axle 2 includes the second external thread post 15, the pivot 16, the gasket 17 and the second nut 18, the second external thread post 15 welds the front end face at the pivot 16, make the second external thread post 15 stable fix on the pivot 16 like this, when user's supporting foot 10 exerts external force, can make the second installation ear 12 use the pivot 16 as the axle and do the circular arc and move, and then can make the supporting foot 10 do the circular arc and move, and then can adjust the angle that forms between supporting foot 10 and the set square 3, the second nut 18 threaded connection is on the second external thread post 15, when user exerts clockwise external force to the second nut 18, can make the second nut 18 rotate clockwise, and can make the second nut 18 move to the direction of keeping away from the gasket 17, and then can unscrew the second nut 18, and then make the supporting foot 10 can rotate when receiving external force, when a user applies counterclockwise external force to the second nut 18, the second nut 18 can be rotated counterclockwise, and the second nut 18 can be moved in a direction close to the gasket 17, so that the second nut 18 can be screwed, the support leg 10 cannot be rotated when the external force is applied, and the gasket 17 is sleeved on the shaft pin 16.

As shown in fig. 1, 4 and 5, one end of the triangle 3 is connected with a ruler plate 5, scale marks 4 are carved on the ruler plate 5, the scale marks 4 are carved on the triangle 3, the scale marks 4 are carved on the first mounting lug 7, the left lower corner of the triangle 3 is connected with the first mounting lug 7, the first mounting lug 7 is provided with a first through hole 8, the lower part of the positive end surface of the ruler plate 5 is welded with a first external thread column 13, so that the first external thread column 13 is stably fixed on the ruler plate 5, the first external thread column 13 penetrates through the first mounting lug 7 through the first through hole 8, the outer diameter of the first external thread column 13 is smaller than the inner diameter of the first through hole 8, so that when the first external thread column 13 penetrates through the first through hole 8, a gap is always formed between the first external thread column 13 and the inner side wall of the first through hole 8, and the first external thread column 13 is convenient to penetrate through the first through hole 8, and further facilitate the first external thread column 13 to run through the first mounting ear 7, the first external thread column 13 is connected with the first nut 14 by screw thread, when the user applies clockwise external force to the first nut 14, the first nut 14 can be rotated clockwise, and the first nut 14 can move towards the direction far away from the first mounting ear 7, and then the first nut 14 can be unscrewed, then, when the user applies external force to the ruler plate 5, the ruler plate 5 can move in arc with the first external thread column 13 as the axis, when the user applies counterclockwise external force to the first nut 14, the first nut 14 can be rotated counterclockwise, and the first nut 14 can move towards the direction near the first mounting ear 7, and then the first nut 14 can be screwed, and then the position of the ruler plate 5 is fixed, the external diameter size of the first nut 14 is larger than the internal diameter size of the first through hole 8, so that the first nut 14 can not pass through the first through hole 8, the ruler plate 5 can then be given a defined function by means of the first nut 14.

As shown in fig. 2 and 3, the outer diameter of the second externally threaded column 15 is smaller than the inner diameter of the second through hole 9, so that when the second externally threaded column 15 passes through the second through hole 9, a gap is always formed between the second externally threaded column 15 and the inner side wall of the second through hole 9, the second externally threaded column 15 can pass through the second mounting lug 12, the outer diameter of the second nut 18 is larger than the inner diameter of the second through hole 9, so that the second nut 18 cannot pass through the second through hole 9, the position of the second mounting lug 12 can be limited by the second nut 18, the outer diameter of the shaft pin 16 is smaller than the inner diameter of the second through hole 9, so that when the shaft pin 16 passes through the second through hole 9, a gap is always formed between the shaft pin 16 and the inner side wall of the second through hole 9, and the shaft pin 16 can pass through the second through hole 9, and then be convenient for pivot 16 to run through second installation ear 12, the external diameter of gasket 17 is greater than the internal diameter size of second through-hole 9, can place gasket 17 like this and pass second through-hole 9, and the quantity of gasket 17 is four, places gasket 17 at the both ends of second installation ear 12, can avoid second installation ear 12 to contact between second nut 18 and engaging lug 6 respectively, and then can prevent that second installation ear 12 from rubbing respectively with second nut 18 and engaging lug 6 and damaging when rotating.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a drawing instrument for mathematical modeling, includes compasses activity foot (1), connecting axle (2) and set-square (3), its characterized in that: the rear end face of the triangular plate (3) is welded with a connecting lug (6), the middle of the positive end face of the connecting lug (6) is welded with a connecting shaft (2), the compass movable foot (1) comprises a support leg (10) and a second mounting lug (12), the second mounting lug (12) is welded at one end of the support leg (10), a second through hole (9) is formed in the second mounting lug (12), a clamping groove (11) is formed in the middle of the other end of the support leg (10), the second mounting lug (12) is sleeved on the connecting shaft (2) through the second through hole (9), the connecting shaft (2) comprises a second external thread column (15), a shaft pin (16), a gasket (17) and a second nut (18), the second external thread column (15) is welded at the front end face of the shaft pin (16), and the second nut (18) is in threaded connection with the second external thread column (15), the gasket (17) is sleeved on the shaft pin (16).

2. The drawing tool for mathematical modeling according to claim 1, wherein a ruler plate (5) is connected to one end of the triangle plate (3), a first mounting lug (7) is connected to the lower left corner of the triangle plate (3), a first through hole (8) is formed in the first mounting lug (7), a first external threaded column (13) is welded to the lower portion of the positive end surface of the ruler plate (5), and the first external threaded column (13) penetrates through the first mounting lug (7) through the first through hole (8).

3. A drawing tool for mathematical modelling according to claim 2, wherein the first externally threaded stud (13) has an external diameter dimension smaller than an internal diameter dimension of the first through hole (8), a first nut (14) being threadedly connected to the first externally threaded stud (13), the external diameter dimension of the first nut (14) being larger than the internal diameter dimension of the first through hole (8).

4. A drawing tool for mathematical modelling according to claim 2, wherein the ruler plate (5) is engraved with graduation marks (4), the triangle plate (3) is engraved with graduation marks (4), and the first mounting ear (7) is engraved with graduation marks (4).

5. A drawing tool for mathematical modelling according to claim 1, wherein the external diameter dimension of said second externally threaded column (15) is smaller than the internal diameter dimension of the second through hole (9), and the external diameter dimension of said second nut (18) is larger than the internal diameter dimension of the second through hole (9).

6. A drawing tool for mathematical modelling according to claim 1, characterized in that the external diameter dimension of said pin (16) is smaller than the internal diameter dimension of said second through hole (9), the external diameter dimension of said spacer (17) is larger than the internal diameter dimension of said second through hole (9), and the number of said spacers (17) is four.