CN213799000U

CN213799000U - Multifunctional drawing ruler for blackboard

Info

Publication number: CN213799000U
Application number: CN202022487967.0U
Authority: CN
Inventors: 陈海龙; 刘欣; 林炜文
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-07-27
Anticipated expiration: 2030-11-02

Abstract

The utility model discloses a blackboard multifunctional drawing ruler, in particular to the field of multifunctional drawing ruler, comprising a main ruler, wherein the bottom of the main ruler is provided with an angle measuring mechanism, one end of the main ruler is provided with a pressing component, the main ruler is provided with a centimeter scale, the top of the main ruler is provided with a central scale mark, and the bottom of the main ruler is provided with a magnetic layer; spacing hole has been seted up to the outside one side of main scale, main scale one side sets up presses the subassembly, it comprises first branch piece, second branch and third sucking disc to press the subassembly, first branch piece one side is provided with second branch. The utility model discloses a set up the semicircle protractor, get required length through the sublance volume when the limit of drawing the angle, and then draw the corner, at last through the set-square of opening the inside one side of main scale, get the angle through the set-square volume when needs draw the vertical angle, and then draw the vertical angle, the effectual diversification that has improved the measurement.

Description

Multifunctional drawing ruler for blackboard

Technical Field

The utility model relates to a multi-functional drawing chi technical field, more specifically say, the utility model relates to a multi-functional drawing chi of blackboard.

Background

In a math class, drawing angles with different angles is a problem frequently encountered by teachers in lectures or students in homework, the errors are large when the teachers in the class draw the images, the students cannot understand the errors, the traditional compasses can be used by the teachers when the teachers draw the angles on a blackboard, the compasses can easily slip on the surface of the blackboard, the use is inconvenient, good education at present is an important link for the growth of each child, math education is also particularly important, the mathematics is also particularly important for the expression of mathematical geometry besides formulas and other applications, and particularly on geometric courses;

in the use of reality, among the present mathematics teaching aid of majority, all be a single instrument like set square, ruler, protractor and compasses, the teacher can not carry whole teaching aids in class, can not carry out diversified measurement.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, this the utility model discloses a set up the semicircle protractor, through the set-square of opening the inside one side of main scale, draw the vertical angle when needs and measure the angle through the set-square volume, and then draw the vertical angle, the effectual measuring diversification that has improved to can not carry out diversified measuring problem in solving above-mentioned background.

In order to achieve the above object, the utility model provides a following technical scheme: a multifunctional blackboard drawing ruler comprises a main ruler, wherein an angle measuring mechanism is arranged at the bottom of the main ruler, a pressing assembly is arranged at one end of the main ruler, a centimeter ruler is arranged on the main ruler, a central scale mark is arranged at the top of the main ruler, and a magnetic layer is arranged at the bottom of the main ruler;

a limiting hole is formed in one side of the outer portion of the main ruler, a pressing assembly is arranged on one side of the main ruler and consists of a first supporting block, a second supporting rod and a third sucking disc, the second supporting rod is arranged on one side of the first supporting block, the third sucking disc is arranged at one end of the second supporting rod, the first supporting block is fixedly connected with the second supporting rod, the second supporting rod is fixedly connected with the third sucking disc, and a mounting hole is formed in one side of the outer portion of the main ruler;

the angle measuring mechanism comprises a semicircular protractor, a protractor scale mark is arranged on the semicircular protractor, a connecting hole is formed in one side of the outside of the semicircular protractor, an auxiliary ruler is arranged on one side of the outside of the main ruler, a fixing hole is formed in one side of the outside of the auxiliary ruler, and a second ruler is arranged on one side of the outside of the auxiliary ruler.

In a preferred embodiment, a limiting rotating shaft is arranged inside the limiting hole, one end of the limiting rotating shaft penetrates through the connecting hole and extends to one side of the outer part of the semicircular protractor, and the other end of the limiting rotating shaft penetrates through the fixing hole and extends to one side of the outer part of the auxiliary ruler.

In a preferred embodiment, a rotating leg is arranged on one side of the outer portion of the main ruler, a rotating hole is formed in one side of the outer portion of the rotating leg, a slotted support block is arranged on one side of the main ruler, an installation groove is formed in one side of the slotted support block, and chalk is arranged inside the installation groove.

In a preferred embodiment, a set square is arranged on one side inside the main ruler, a protractor is arranged on one side outside the set square, a measuring code is arranged on one side outside the set square, and a triangular hole is formed in one side outside the set square.

In a preferred embodiment, a second rotating shaft is disposed at an outer side of the rotating leg, and one end of the second rotating shaft sequentially passes through the rotating hole, the mounting hole and the triangular hole from top to bottom and extends to an outer side of the triangular hole.

In a preferred embodiment, the main ruler, the auxiliary ruler, the turning legs and the set square are made of wood material.

In a preferred embodiment, the third suction cup is provided with a trumpet shape in cross section, the third suction cup is made of a rubber material, and the second support rod is made of a stainless steel material.

The utility model discloses a technological effect and advantage:

1. by arranging the semicircular protractor, when the semicircular protractor is opened, the angle of the protractor scale lines on the semicircular protractor is measured on an object, then the auxiliary ruler on one side outside the main ruler is opened, the required length is measured by the auxiliary ruler when the edge of the angle is drawn, the corner is drawn, finally, the angle is measured by the set square on one side inside the main ruler by opening the set square on one side inside the main ruler, and the vertical angle is drawn by the set square when the vertical angle is required to be drawn, so that the measurement diversity is effectively improved;

2. through setting up the main scale, through opening the rotatory leg on the main scale when needs draw the circle, then the third sucking disc that will press on the subassembly is pressed on the blackboard manually, adsorbs the blackboard and then the non-skid through the third sucking disc, and then the manual rotatory leg of pressing is on the blackboard, through rotating rotatory leg, and then drives the rotatory circle of drawing of chalk on the piece that cracks, has improved the practicality of main scale.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic structural diagram of a position a of the present invention.

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

Fig. 4 is a schematic view of the structure of the rotating leg of the present invention.

Fig. 5 is a schematic structural view of the auxiliary ruler and the set square of the present invention.

The reference signs are: 1. a main scale; 2. a pressing assembly; 3. a centimeter scale; 4. a central graduation line; 5. a magnetic layer; 6. a limiting hole; 7. a first support block; 8. a second support bar; 9. a third suction cup; 10. mounting holes; 11. a semicircular protractor; 12. angle measurement scale lines; 13. connecting holes; 14. a secondary ruler; 15. a fixing hole; 16. a second scale; 17. a limiting rotating shaft; 18. rotating the legs; 19. rotating the hole; 20. slotting a branch block; 21. mounting grooves; 22. chalk; 23. a set square; 24. measuring a corner line; 25. measuring the mark code; 26. a triangular hole; 27. a second axis of rotation.

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.

The multifunctional blackboard drawing ruler shown in the attached figures 1-5 comprises a main ruler 1, wherein an angle measuring mechanism is arranged at the bottom of the main ruler 1, a pressing component 2 is arranged at one end of the main ruler 1, a centimeter ruler 3 is arranged on the main ruler 1, a central scale mark 4 is arranged at the top of the main ruler 1, and a magnetic layer 5 is arranged at the bottom of the main ruler 1;

a limiting hole 6 is formed in one side of the outer portion of the main ruler 1, a pressing assembly 2 is arranged on one side of the main ruler 1, each pressing assembly 2 is composed of a first supporting block 7, a second supporting rod 8 and a third sucking disc 9, a second supporting rod 8 is arranged on one side of the first supporting block 7, the third sucking disc 9 is arranged at one end of the second supporting rod 8, the first supporting block 7 is fixedly connected with the second supporting rod 8, the second supporting rod 8 is fixedly connected with the third sucking disc 9, and a mounting hole 10 is formed in one side of the outer portion of the main ruler 1;

the angle measuring mechanism comprises a semicircular protractor 11, protractor scale lines 12 are arranged on the semicircular protractor 11, a connecting hole 13 is formed in one side of the outside of the semicircular protractor 11, an auxiliary ruler 14 is arranged on one side of the outside of the main ruler 1, a fixing hole 15 is formed in one side of the outside of the auxiliary ruler 14, and a second ruler 16 is arranged on one side of the outside of the auxiliary ruler 14.

As shown in fig. 1, a limiting rotating shaft 17 is disposed inside the limiting hole 6, one end of the limiting rotating shaft 17 penetrates through the connecting hole 13 and extends to one side of the outside of the semicircular protractor 11, and the other end of the limiting rotating shaft 17 penetrates through the fixing hole 15 and extends to one side of the outside of the auxiliary ruler 14, so that the semicircular protractor 11 can measure the angle of the object.

As shown in fig. 4, a rotating leg 18 is arranged on one side of the outer portion of the main scale 1, a rotating hole 19 is formed in one side of the outer portion of the rotating leg 18, a slotted support block 20 is arranged on one side of the main scale 1, an installation groove 21 is formed in one side of the slotted support block 20, and chalk 22 is arranged inside the installation groove 21 so that the chalk 22 on the rotating leg 18 can draw lines.

As shown in the attached figure 5, one side of the inside of the main ruler 1 is provided with a triangular plate 23, one side of the outside of the triangular plate 23 is provided with a angulometry line 24, one side of the outside of the triangular plate 23 is provided with a measuring mark 25, and one side of the outside of the triangular plate 23 is provided with a triangular hole 26, so that the measuring mark 25 can measure the verticality of an object.

As shown in fig. 1, a second rotation shaft 27 is disposed on one side of the outer portion of the rotation leg 18, and one end of the second rotation shaft 27 sequentially passes through the rotation hole 19, the mounting hole 10 and the triangular hole 26 from top to bottom and extends to one side of the outer portion of the triangular hole 26, so that the second rotation shaft 27 drives the rotation leg 18 of the main scale 1 and the triangular plate 23 to rotate.

As shown in fig. 1, the main scale 1, the sub-scale 14, the turning legs and the set square 23 are made of wood material so as to reduce the cost of the drawing ruler.

As shown in figure 1, the cross section of the third suction cup 9 is in a horn shape, the third suction cup 9 is made of rubber material, and the second support rod 8 is made of stainless steel material, so that the third suction cup 9 can prolong the service life.

The utility model discloses the theory of operation: firstly, when a circle needs to be drawn, the rotating leg 18 on the main scale 1 is opened, then the third sucker 9 on the pressing component 2 is manually pressed on the blackboard, the blackboard is adsorbed by the third sucker 9 so as to be not easy to slip, then the rotating leg 18 is manually pressed on the blackboard, by rotating the rotating leg 18, the chalk 22 on the slotted supporting block 20 is driven to rotate to draw a circle, and then when the semicircular protractor 11 is opened, because the angle measuring scale lines 12 are arranged on the semicircular angle gauge 11, and the angle measuring scale lines 12 on the semicircular angle gauge 11 measure the angle of the object, then, by opening the sub ruler 14 on the outer side of the main ruler 1, the desired length is measured by the sub ruler 14 when drawing the side of the corner, and then draw the corner, at last through opening the set square 23 of the inside one side of main scale 1, get the angle through set square 23 volume when need draw the perpendicular angle, and then draw the perpendicular angle, the effectual measuring diversification that has improved.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a multi-functional drawing chi of blackboard, includes main scale (1), its characterized in that: the angle measuring device is characterized in that an angle measuring mechanism is arranged at the bottom of the main scale (1), a pressing component (2) is arranged at one end of the main scale (1), a centimeter scale (3) is arranged on the main scale (1), a central scale mark (4) is arranged at the top of the main scale (1), and a magnetic layer (5) is arranged at the bottom of the main scale (1);

a limiting hole (6) is formed in one side of the outer portion of the main scale (1), a pressing assembly (2) is arranged on one side of the main scale (1), each pressing assembly (2) is composed of a first supporting block (7), a second supporting rod (8) and a third sucking disc (9), the second supporting rod (8) is arranged on one side of the first supporting block (7), the third sucking disc (9) is arranged at one end of the second supporting rod (8), the first supporting block (7) is fixedly connected with the second supporting rod (8), the second supporting rod (8) is fixedly connected with the third sucking disc (9), and a mounting hole (10) is formed in one side of the outer portion of the main scale (1);

the angle measuring mechanism comprises a semicircular protractor (11), protractor scale marks (12) are arranged on the semicircular protractor (11), a connecting hole (13) is formed in one side of the outside of the semicircular protractor (11), an auxiliary ruler (14) is arranged on one side of the outside of the main ruler (1), a fixing hole (15) is formed in one side of the outside of the auxiliary ruler (14), and a second ruler (16) is arranged on one side of the outside of the auxiliary ruler (14).

2. The blackboard multifunctional drawing ruler according to claim 1, characterized in that: spacing hole (6) inside is provided with spacing pivot (17), spacing pivot (17) one end runs through connecting hole (13) and extends to semicircle protractor (11) outside one side, spacing pivot (17) other end runs through fixed orifices (15) and extends to vice chi (14) outside one side.

3. The blackboard multifunctional drawing ruler according to claim 1, characterized in that: the chalk box is characterized in that a rotating leg (18) is arranged on one side of the outer portion of the main ruler (1), a rotating hole (19) is formed in one side of the outer portion of the rotating leg (18), a slotting supporting block (20) is arranged on one side of the main ruler (1), a mounting groove (21) is formed in one side of the slotting supporting block (20), and chalk (22) is arranged inside the mounting groove (21).

4. The multifunctional blackboard drawing ruler according to claim 3, characterized in that: and a second rotating shaft (27) is arranged on one side of the outer part of the rotating leg (18), and one end of the second rotating shaft (27) sequentially penetrates through the rotating hole (19), the mounting hole (10) and the triangular hole (26) from top to bottom and extends to one side of the outer part of the triangular hole (26).

5. The blackboard multifunctional drawing ruler according to claim 1, characterized in that: the main scale is characterized in that a set square (23) is arranged on one side inside the main scale (1), angle measuring lines (24) are arranged on one side outside the set square (23), measuring marks (25) are arranged on one side outside the set square (23), and a set square hole (26) is formed in one side outside the set square (23).

6. The blackboard multifunctional drawing ruler according to claim 1, characterized in that: the main ruler (1), the auxiliary ruler (14), the rotating legs and the set square (23) are all made of wood materials.

7. The blackboard multifunctional drawing ruler according to claim 1, characterized in that: the cross section of the third sucker (9) is horn-shaped, the third sucker (9) is made of rubber materials, and the second supporting rod (8) is made of stainless steel materials.