CN214727743U

CN214727743U - Drawing device with it is multi-functional

Info

Publication number: CN214727743U
Application number: CN202120755774.0U
Authority: CN
Inventors: 刘明君; 任慧; 贺慧; 张二丽
Original assignee: Zhengzhou Institute of Finance and Economics
Current assignee: Zhengzhou Institute of Finance and Economics
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-16
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses a multifunctional drawing device, which comprises an A ruler and a B ruler, wherein the left part of the A ruler is provided with an angle measuring disc, the center of the angle measuring disc is provided with a first fixing hole, the right part of the A ruler is provided with a straight ruler, the upper part and the lower part of the straight ruler are both provided with scale marks, the middle part of the straight ruler is provided with a strip-shaped through hole, and a chalk fixing device is arranged on the strip-shaped through hole; the chalk fixing device comprises an indicating needle, a first fixing piece, a loose and tight nut, a hollow bolt, a second fixing piece and a chalk chuck; the left part of the ruler B is provided with a second fixing hole, the upper part and the lower part of the ruler B are both provided with scale marks, the middle part of the ruler B is provided with a central line, and the right part of the ruler B is provided with a turning ruler; the ruler A and the ruler B are rotationally connected through a sucker screw and a butterfly nut which penetrate through the first fixing hole and the second fixing hole; the utility model has the advantages of small volume, convenient carrying, various functions, reasonable structural design and suitability for various drawing modes.

Description

Drawing device with it is multi-functional

Technical Field

The utility model belongs to the technical field of drawing tool, in particular to drawing device with it is multi-functional.

Background

The current student of mathematics is a necessary subject for students, in the course of teaching, teachers need to use drawing tools to draw figures on a blackboard, which is helpful for students to understand, at present, the functions of the drawing tools used by teachers are single, so that teachers need to carry various drawing tools such as drawing rulers, compasses, angle scales and the like when going to class, teachers need to use different drawing tools when teaching on the blackboard, and need to indicate the drawing tools to students, because the function of the drawing device is single, teachers need to use strength to draw a drawing ruler to draw a picture accurately when drawing, the operation is very troublesome, the drawing tools occupy large space and are inconvenient to carry, in order to solve the defects existing in the market, the technology of a teaching device needs to be improved urgently, teaching operation can be carried out better, and a good environment is provided for students to learn mathematics drawing, therefore, the utility model provides a drawing device with multiple functions.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drawing device with it is multi-functional, have small, convenient to carry, the function is various, structural design is reasonable, be applicable to the advantage of multiple drawing mode.

In order to achieve the above object, the utility model provides a following technical scheme: a multifunctional drawing device comprises a ruler A and a ruler B, wherein the left part of the ruler A is provided with an angle measuring disc, a first fixing hole is formed in the circle center of the angle measuring disc, the right part of the ruler A is provided with a straight ruler, the upper part and the lower part of the straight ruler are both provided with scale marks, the middle part of the straight ruler is provided with a strip-shaped through hole, and a chalk fixing device is arranged on the strip-shaped through hole; the chalk fixing device comprises an indicating needle, a first fixing piece, a turnbuckle, a hollow bolt, a second fixing piece and a chalk chuck, wherein the second fixing piece is fixedly arranged at the lower part of the hollow bolt, the chalk chuck is arranged at the lower side of the hollow bolt, chalk is arranged on the chalk chuck, the first fixing piece is movably arranged at the upper part of the hollow bolt, the indicating needle is arranged at the rear side of the first fixing piece, and the turnbuckle is arranged at the upper side of the first fixing piece; the left part of the B ruler is provided with a second fixing hole, the upper part and the lower part of the B ruler are both provided with scale marks, the middle part of the B ruler is provided with a central line, and the right part of the B ruler is provided with a turning ruler; the A ruler and the B ruler are rotatably connected through a sucker screw and a butterfly nut which penetrate through the first fixing hole and the second fixing hole.

Preferably, the lower side of the right end of the A ruler is provided with an auxiliary supporting block, and the lower end of the auxiliary supporting block is arc-shaped.

Preferably, two sides of the hollow bolt are parallel surfaces, the width of the two parallel surfaces is the same as that of the strip-shaped through hole, and the thread of the hollow bolt is arranged on the two cambered surfaces; the internal structure of the first fixing piece is the same as the external structure of the hollow bolt.

Preferably, the A ruler is arranged on the upper side of the B ruler, and gaskets are arranged on the upper side of the first fixing hole of the A ruler and the lower side of the second fixing hole of the B ruler.

Preferably, the starting point of the scale mark of the A scale is arranged at the position corresponding to the circle center of the first fixed hole, and the starting point of the scale mark of the B scale is arranged at the position corresponding to the circle center of the second fixed hole.

Preferably, the effective scale of the A ruler is 55cm, the effective scale of the B ruler is 45cm, the width of the crutch ruler is 5cm, and the widths of the first fixing plate and the second fixing plate are 3 cm.

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

the utility model adopts the structure that the A ruler and the B ruler are combined, the A ruler and the B ruler are both provided with scale marks, the A ruler can be directly used for drawing straight lines, the A ruler is provided with a strip-shaped through hole and a chalk fixing device, the chalk is fixed at a required length position by using the chalk fixing device, a sucker screw is reused as a circle center, a circle or an arc line can be drawn by rotating the A ruler, and the lower part of the right end of the A ruler is provided with an auxiliary supporting block, thereby facilitating drawing; a turning ruler is arranged on the ruler B and can be used for drawing a right angle; the A ruler and the B ruler are combined, angles of any angle can be drawn, when the A ruler and the B ruler form an angle of 90 degrees and one ruler is located at a horizontal position, a coordinate system can be formed, and the A ruler and the B ruler are convenient to place by using a sucker screw; when the utility model is not used, the ruler A and the ruler B can be folded into one piece, which is convenient for carrying; the utility model discloses the function is various, satisfies the most functions that the teacher painted the picture, and occupies smallly, is fit for promoting.

Drawings

Fig. 1 is a schematic structural view of the present invention when it is deployed.

Fig. 2 is a schematic structural view of the present invention when closed.

Fig. 3 is a schematic structural view of the ruler a of the present invention.

Fig. 4 is a schematic structural view of the ruler B of the present invention.

Fig. 5 is a schematic side view of the present invention.

Fig. 6 is a schematic top view of the chalk holder of the present invention.

Fig. 7 is a schematic side view of the chalk fixing device of the present invention.

In the figure: 1. the chalk clamp comprises a ruler A, a protractor plate 2, a protractor plate 3, a ruler 4, scale marks 5, a strip-shaped through hole 6, a chalk fixing device 7, an indicating needle 8, a first fixing piece 9, a loose nut 10, a hollow bolt 11, chalk 12, a second fixing piece 13, a ruler B, a turning ruler 14, a turning ruler 15, a first fixing hole 16, a second fixing hole 17, a central line 18, an auxiliary supporting block 19, a sucker screw 20, a butterfly nut 21, a gasket 22 and a chalk clamp head.

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.

Referring to fig. 1-7, the present embodiment provides a multifunctional drawing device, including an a ruler 1 and a B ruler 13, where a protractor 2 is disposed at a left portion of the a ruler 1, a first fixing hole 15 is disposed at a circle center of the protractor 2, a straight ruler 3 is disposed at a right portion of the a ruler 1, scale marks 4 are disposed at upper and lower portions of the straight ruler 3, a bar-shaped through hole 5 is disposed at a middle portion of the straight ruler 3, and a chalk fixing device 6 is mounted on the bar-shaped through hole 5; the chalk fixing device 6 comprises an indicating needle 7, a first fixing piece 8, a loose nut 9, a hollow bolt 10, a second fixing piece 12 and a chalk chuck 22, the second fixing piece 12 is fixedly arranged at the lower part of the hollow bolt 10, the chalk chuck 22 is arranged at the lower side of the hollow bolt 10, a chalk 11 is installed on the chalk chuck 22, the first fixing piece 8 is movably arranged at the upper part of the hollow bolt 10, the indicating needle 7 is arranged at the rear side of the first fixing piece 8, and the loose nut 9 is arranged at the upper side of the first fixing piece 8; a second fixing hole 16 is formed in the left part of the B ruler 13, the upper part and the lower part of the B ruler 13 are both provided with scale marks 4, a central line 17 is arranged in the middle of the B ruler 13, and a turning ruler 14 is arranged on the right part of the B ruler 13; the a rule 1 and the B rule 13 are rotatably connected by a suction cup screw 19 and a wing nut 20 which pass through the first fixing hole 15 and the second fixing hole 16.

In order to make the a ruler 1 more stable when drawing, in the embodiment, an auxiliary supporting block 18 is arranged at the lower side of the right end of the a ruler 1, and the lower end of the auxiliary supporting block 18 is arranged in an arc shape.

In order to prevent the chalk fixing device 6 from rotating when sliding and influence the drawing accuracy, in the embodiment, two sides of the hollow bolt 10 are set as parallel surfaces, the width of the two parallel surfaces is the same as that of the strip-shaped through hole 5, and the thread of the hollow bolt 10 is set on two arc surfaces; the internal structure of the first fixing plate 8 is the same as the external structure of the hollow bolt 10.

In order to make the utility model discloses a sucking disc screw 19 and butterfly nut 20 are fixed more stably, in this embodiment, A chi 1 sets up at B chi 13 upside, the first fixed orifices 15 upside of A chi 1 and the second fixed orifices 16 downside of B chi 13 all are provided with packing ring 21.

In order to facilitate the use of the utility model discloses draw, in this embodiment, the initial point setting of 1 scale mark 4 of A chi corresponds the position in the 15 centre of a circle of first fixed orificess, the initial point of 13 scale mark 4 of B chi sets up the centre of a circle corresponding position of second fixed orificess 16.

In order to make the utility model discloses make things convenient for classroom teaching to use, and can fold together A chi 1 and B chi 13 when not using, in this embodiment, the effective scale of A chi 1 is 55cm, the effective scale of B chi 13 is 45cm, turning 14 widths of chi is 5cm, the width of first stationary blade 8 and second stationary blade 12 is 3 cm.

The utility model discloses a theory of operation: when the utility model is used for drawing, the A ruler 1 or the B ruler 13 can be directly used for straight line drawing, and the B ruler 13 is provided with the turning ruler 14 and can be used for drawing right angles; when a circle or an arc needs to be drawn, the chalk 11 is filled in the chalk fixing device 6, namely the chalk 11 penetrates through the inner side of the hollow bolt 10, the chalk 11 is fixed by using the chalk chuck 22, then the elastic nut 9 is unscrewed, the chalk fixing device 6 is slid to a required scale position, and then the elastic nut 9 is screwed down; two sides of the hollow bolt 10 are provided with parallel surfaces, the width of the two parallel surfaces is the same as that of the strip-shaped through hole 5, and the thread of the hollow bolt 10 is arranged on two cambered surfaces; the internal structure of the first fixing piece 8 is the same as the external structure of the hollow bolt 10, so that the pointer 7 can be prevented from rotating when in use, and the drawing precision is prevented from being influenced; sucking the sucker on the sucker screw 19 to the circle center of the drawing, loosening the butterfly nut 20, and rotating the ruler A1 around the sucker to draw a circle or an arc line; the A ruler 1 and the B ruler 13 are combined to draw an angle of any angle, when the A ruler 1 and the B ruler 13 form an angle of 90 degrees, and one ruler is positioned at a horizontal position, a coordinate system can be formed, and the A ruler and the B ruler are conveniently placed by using the sucker screw 19; when not using the utility model discloses the time, can fold to one with A chi 1 and B chi 13, conveniently carry.

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

Claims

1. A drawing device with multiple functions comprises an A ruler and a B ruler, and is characterized in that: the left part of the ruler A is provided with an angle measuring disc, a first fixing hole is formed in the circle center of the angle measuring disc, the right part of the ruler A is provided with a straight ruler, the upper part and the lower part of the straight ruler are both provided with scale marks, the middle part of the straight ruler is provided with a strip-shaped through hole, and a chalk fixing device is installed on the strip-shaped through hole; the chalk fixing device comprises an indicating needle, a first fixing piece, a turnbuckle, a hollow bolt, a second fixing piece and a chalk chuck, wherein the second fixing piece is fixedly arranged at the lower part of the hollow bolt, the chalk chuck is arranged at the lower side of the hollow bolt, chalk is arranged on the chalk chuck, the first fixing piece is movably arranged at the upper part of the hollow bolt, the indicating needle is arranged at the rear side of the first fixing piece, and the turnbuckle is arranged at the upper side of the first fixing piece; the left part of the B ruler is provided with a second fixing hole, the upper part and the lower part of the B ruler are both provided with scale marks, the middle part of the B ruler is provided with a central line, and the right part of the B ruler is provided with a turning ruler; the A ruler and the B ruler are rotatably connected through a sucker screw and a butterfly nut which penetrate through the first fixing hole and the second fixing hole.

2. The drawing device with multiple functions as claimed in claim 1, wherein: an auxiliary supporting block is arranged on the lower side of the right end of the A ruler, and the lower end of the auxiliary supporting block is arc-shaped.

3. The drawing device with multiple functions as claimed in claim 1, wherein: two sides of the hollow bolt are provided with parallel surfaces, the width of the two parallel surfaces is the same as that of the strip-shaped through hole, and the thread of the hollow bolt is arranged on the two cambered surfaces; the internal structure of the first fixing piece is the same as the external structure of the hollow bolt.

4. The drawing device with multiple functions as claimed in claim 1, wherein: the A chi sets up in B chi upside, the first fixed orifices upside of A chi and the second fixed orifices downside of B chi all are provided with the packing ring.

5. The drawing device with multiple functions as claimed in claim 1, wherein: the starting point of the A scale graduation line is arranged at the position corresponding to the circle center of the first fixed hole, and the starting point of the B scale graduation line is arranged at the position corresponding to the circle center of the second fixed hole.

6. The drawing device with multiple functions as claimed in claim 1, wherein: the effective scale of A chi is 55cm, the effective scale of B chi is 45cm, turning chi width is 5cm, the width of first stationary blade and second stationary blade is 3 cm.