CN215513012U

CN215513012U - Drawing device for college mathematics

Info

Publication number: CN215513012U
Application number: CN202121651570.9U
Authority: CN
Inventors: 王睿童
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-14
Anticipated expiration: 2031-07-20

Abstract

The utility model relates to a drawing device for college mathematics, which comprises a ruler and a protractor, wherein the ruler is used for measuring length, the protractor is used for measuring angle, supporting legs are arranged on the back surface of the ruler, a threaded rod penetrates through the back surface of the protractor, one end, close to the front surface, of the threaded rod sequentially penetrates through the supporting legs and the ruler and extends to the front surface of the ruler, the threaded rod is in threaded connection with a shrinking ring, one end, close to the shrinking ring, of the ruler is fixedly connected with a handle, a fulcrum assembly is fixed at one end, far away from the shrinking ring, of the front surface of the ruler, the fulcrum assembly comprises a fixed barrel and a rubber column, the fixed barrel is fixedly installed at one end, far away from the shrinking ring, of the front surface of the ruler, the fulcrum assembly comprises a fixed barrel, the back surface of the supporting legs is fixedly installed with a fixed bin, a pen inlet is formed in the top surface of the fixed bin, and a fixing mechanism is arranged in the fixed bin. Swing joint has multiple teaching aid through on the threaded rod for the teacher can use the teaching aid of different functions as required, thereby reaches the wide effect of application scope.

Description

Drawing device for college mathematics

Technical Field

The utility model relates to the technical field of mathematics, in particular to a drawing device for university mathematics.

Background

Mathematics is a subject of studying concepts of quantity, structure, variation, space, and information.

In the mathematics teaching of university, the teacher can use various teaching aids, wherein just including the teaching aid of drawing usefulness, but traditional teaching aid single structure, the scope that every kind of teaching aid is suitable for is less, when needs draw more complicated figure, and the teacher often need carry multiple teaching aid, and is very inconvenient, so provides a drawing device for college mathematics.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a drawing device for university mathematics, which has the advantages of convenience in carrying, wide application range and the like, and solves the problem that the traditional teaching aid is single in structure and narrow in application range.

In order to achieve the purpose, the utility model provides the following technical scheme: a drawing device for college mathematics comprises a ruler and a protractor, wherein the ruler is used for measuring length, the protractor is used for measuring angle, supporting legs are arranged on the back of the ruler, a threaded rod penetrates through the back of the protractor, one end of the threaded rod, which is close to the front, sequentially penetrates through the supporting legs and the ruler and extends to the front of the ruler, a tightening ring is connected with the threaded rod in a threaded manner, a handle is fixedly connected with one end of the ruler, which is close to the tightening ring, a fulcrum assembly is fixed at one end, which is far away from the tightening ring, of the front of the ruler and is used as a fulcrum when drawing circles, the fulcrum assembly comprises a fixed barrel and a rubber column, which is fixed on the inner peripheral wall of the fixed barrel, the back of the supporting legs is fixedly provided with a fixed bin, a pen inlet is formed in the top surface of the fixed bin, a pen for teachers to insert pens into the fixed bin, and a fixing mechanism is arranged in the fixed bin, the pen fixing device is used for fixing a pen inserted into the fixing bin.

Further, the landing leg is located the back of ruler, the protractor is located the back of landing leg, the through hole with threaded rod looks adaptation is all seted up in the front of ruler, landing leg and protractor, and the cooperation mode is clearance fit.

Further, fixed establishment includes restriction subassembly and reset assembly, and restriction subassembly is fixed the pen of inserting in fixed storehouse, and reset assembly resets restriction subassembly.

Furthermore, the restriction subassembly includes that one end runs through fixed storehouse bottom and extends to the press depression bar of its bottom, fixed connection is according to the base on the press depression bar top, quantity be two and equal fixed connection is on the base top surface restriction pole, two restriction pole relative one side fixed connection's rubber layer and quantity be two and fix respectively the L type expansion board on fixed storehouse left and right sides inner wall.

Furthermore, the subassembly that resets includes that quantity is two and all fixes the gag lever post on pressing the depression bar outer wall, fixes fixed disk and the suit on the internal perisporium of fixed storehouse and presses the outside spring of depression bar.

Furthermore, the top of spring and the bottom surface fixed connection of fixed disk, the bottom of spring and the top surface fixed connection of gag lever post.

Further, the pressing rod penetrates through the fixed disc, the matching mode is clearance fit, and the base is located at the top of the fixed disc.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this drawing device for college mathematics has multiple teaching aid through swing joint on the threaded rod for the teacher can use the teaching aid of different functions as required, thereby reaches the wide effect of application scope.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a rear view of the structure of the present invention;

fig. 3 is a schematic structural view of the fixing mechanism of the present invention.

In the figure: the pen comprises a ruler 1, a protractor 2, a handle 3, support legs 4, a tightening ring 5, a fixing barrel 6, a rubber column 7, a threaded rod 8, a fixing bin 9, a pressing rod 10, a limiting rod 11, a spring 12, a fixing disk 13, a base 14, a limiting rod 15, a rubber layer 16, a expanding plate 17L and a pen inlet 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the drawing device for university mathematics in the present embodiment includes a straight ruler 1 for measuring length and a protractor 2 for measuring angle.

The back of ruler 1 is equipped with landing leg 4, and threaded rod 8 runs through at the back of protractor 2, and threaded rod 8 is close to positive one end and still runs through landing leg 4 and ruler 1 in proper order and extend to the front of ruler 1, and threaded rod 8 threaded connection has shrink ring 5.

Landing leg 4 is located the back of ruler 1, and protractor 2 is located the back of landing leg 4, and the through hole with 8 looks adaptations of threaded rod is all seted up in the front of ruler 1, landing leg 4 and protractor 2, and the cooperation mode is clearance fit.

When the tightening ring 5 is tightened, the clamping force from the tightening ring 5 clamps the straightedge 1, the legs 4 and the protractor 2, and when the tightening ring 5 is loosened, the straightedge 1, the legs 4 and the protractor 2 can rotate about the threaded rod 8.

One end of the ruler 1 close to the tightening ring 5 is fixedly connected with a handle 3, and one end of the front of the ruler 1 far away from the tightening ring 5 is fixed with a fulcrum assembly to be used as a fulcrum when drawing a circle.

The fulcrum assembly comprises a fixed cylinder 6 fixedly installed at one end, far away from the tightening ring 5, of the front face of the straight scale 1 and a rubber column 7 fixed on the inner peripheral wall of the fixed cylinder 6.

When the supporting legs 4, the handle 3, the ruler 1 and the rubber column 7 are matched for use, the compass can be used for drawing circles.

The back fixed mounting of landing leg 4 has fixed storehouse 9, and the top surface of fixed storehouse 9 has been seted up into a mouth 18, and the teacher of being convenient for is equipped with fixed establishment in the fixed storehouse 9 with the used pen of drawing in inserting fixed storehouse 9 for the pen that will insert in fixed storehouse 9 is fixed.

The fixing mechanism comprises a limiting component and a resetting component, the limiting component fixes the pen inserted into the fixing bin 9, and the resetting component resets the limiting component.

The restriction assembly comprises a pressing rod 10 with one end penetrating through the bottom end of the fixed bin 9 and extending to the bottom of the fixed bin, a base 14 fixedly connected to the top end of the pressing rod 10, two restriction rods 15 fixedly connected to the top surface of the base 14, two rubber layers 16 fixedly connected to the opposite sides of the two restriction rods 15, and two L-shaped expansion plates 17 fixed to the inner walls of the left side and the right side of the fixed bin 9 respectively.

The limiting rod 15 is made of hard rubber, and when the pressing rod 10 moves, the base 14 and the limiting rod 15 fixed on the top surface of the base 14 can be driven to move together.

In the upward movement of the pressing rod 10, after the top surfaces of the restricting rods 15 contact the L-shaped expanding plate 17, the two restricting rods 15 gradually move in the backward direction under the restriction of the L-shaped expanding plate 17 as they move upward.

The reset assembly comprises two limiting rods 11 which are fixed on the outer wall of the pressing rod 10, a fixed disk 13 which is fixed on the inner peripheral wall of the fixed bin 9 and a spring 12 which is sleeved outside the pressing rod 10.

The top end of the spring 12 is fixedly connected with the bottom surface of the fixed disc 13, and the bottom end of the spring 12 is fixedly connected with the top surface of the limiting rod 11.

The pressing rod 10 penetrates through the fixed disc 13 in a clearance fit mode, and the base 14 is located at the top of the fixed disc 13.

When the pressing lever 10 is pressed and moved upward, the spring 12 is pressed, and after the pressing lever 10 stops being pressed, the pressing lever 10 is returned by the elastic force of the spring 12.

The working principle of the above embodiment is as follows:

(1) when needs use the teaching aid, at first reverse the screwing ring 5 that moves, then rotate the teaching aid that needs use, rotate the required position at the teaching aid after, screw up the ring 5 that tightens, make the teaching aid fixed can.

(2) When a pen needs to be inserted into the fixing bin 9, the pressing rod 10 is firstly pressed to enable the limiting rod 15 to be opened under the limitation of the L-shaped expansion plate 17, then the pen is inserted into the fixing bin 9 through the pen inlet 18, finally, the pressing is stopped, the pressing rod 10 is enabled to reset under the driving of the resetting component, and the pen is clamped and fixed after the limiting rod 15 is reset.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A drawing device for university mathematics, comprising:

a ruler (1) for measuring length and a protractor (2) for measuring angle;

the method is characterized in that: the back of the ruler (1) is provided with supporting legs (4), the back of the protractor (2) is penetrated with a threaded rod (8), one end, close to the front, of the threaded rod (8) sequentially penetrates through the supporting legs (4) and the ruler (1) and extends to the front of the ruler (1), and the threaded rod (8) is in threaded connection with a tightening ring (5);

a handle (3) is fixedly connected to one end, close to the tightening ring (5), of the ruler (1), and a fulcrum assembly is fixed to one end, far away from the tightening ring (5), of the front face of the ruler (1) and used as a fulcrum when a circle is drawn;

the fulcrum assembly comprises a fixed cylinder (6) fixedly arranged at one end of the front surface of the ruler (1) far away from the tightening ring (5) and a rubber column (7) fixed on the inner peripheral wall of the fixed cylinder (6);

the back fixed mounting of landing leg (4) has fixed storehouse (9), the top surface in fixed storehouse (9) has been seted up and has been advanced a mouthful (18), and the teacher of being convenient for inserts fixed storehouse (9) with the used pen of drawing in, be equipped with fixed establishment in fixed storehouse (9) for the pen that will insert in fixed storehouse (9) is fixed.

2. The drawing device for university mathematics as defined in claim 1, wherein: landing leg (4) are located the back of ruler (1), protractor (2) are located the back of landing leg (4), the through hole with threaded rod (8) looks adaptation is all seted up in the front of ruler (1), landing leg (4) and protractor (2), and the cooperation mode is clearance fit.

3. The drawing device for university mathematics according to claim 2, wherein: the fixing mechanism comprises a limiting component and a resetting component, the limiting component fixes pens inserted into the fixing bin (9), and the resetting component resets the limiting component.

4. The drawing device for university mathematics as defined in claim 3, wherein: the limiting assembly comprises a pressing rod (10) with one end penetrating through the bottom end of the fixed bin (9) and extending to the bottom of the fixed bin, a base (14) fixedly connected to the top end of the pressing rod (10), two limiting rods (15) which are fixedly connected to the top surface of the base (14), two rubber layers (16) fixedly connected to one opposite sides of the two limiting rods (15), and two L-shaped expansion plates (17) which are fixedly connected to the inner walls of the left side and the right side of the fixed bin (9) respectively.

5. The drawing device for university mathematics according to claim 4, wherein: reset assembly includes quantity be two and all fix gag lever post (11) on pressing pressure pole (10) outer wall, fix fixed disk (13) on fixed storehouse (9) internal perisporium and suit spring (12) in the outside of pressing pressure pole (10).

6. The drawing device for university mathematics according to claim 5, wherein: the top end of the spring (12) is fixedly connected with the bottom surface of the fixed disc (13), and the bottom end of the spring (12) is fixedly connected with the top surface of the limiting rod (11).

7. The drawing device for university mathematics according to claim 6, wherein: the pressing rod (10) penetrates through the fixed disc (13), the matching mode is clearance fit, and the base (14) is located at the top of the fixed disc (13).