CN215360670U - Annular triangle drawing device for mathematical education - Google Patents
Annular triangle drawing device for mathematical education Download PDFInfo
- Publication number
- CN215360670U CN215360670U CN202120352207.0U CN202120352207U CN215360670U CN 215360670 U CN215360670 U CN 215360670U CN 202120352207 U CN202120352207 U CN 202120352207U CN 215360670 U CN215360670 U CN 215360670U
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- Prior art keywords
- set square
- angle
- triangular
- drawing device
- triangular ruler
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- 239000011324 bead Substances 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 2
- 208000012260 Accidental injury Diseases 0.000 abstract description 5
- 230000006870 function Effects 0.000 abstract description 5
- 208000014674 injury Diseases 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 239000007779 soft material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses an annular triangular drawing device for mathematical education, which comprises a triangular ruler, right-angle sides, semicircular rulers, corner protection structures and an inclined side, wherein the right-angle sides are arranged on two sides inside the triangular ruler, the surfaces of the right-angle sides are marked with equally-spaced scale marks, rectangular grooves are formed in the side wall of the triangular ruler at the positions of the right-angle sides, magnetic blocks are fixed inside the rectangular grooves, the inclined side is arranged on one side inside the triangular ruler, equally-spaced round holes are formed inside the inclined side, push posts are arranged inside the triangular ruler at two sides of the inclined side, one end of each push post penetrates through the triangular ruler and is fixed with a positioning sucker, and the corner protection structures are arranged at two ends of the triangular ruler. The utility model not only can simultaneously have the triangular and round drawing functions, improves the convenience in use, can be adsorbed on the blackboard, does not need to be held by a teacher, saves more labor, but also is convenient to protect the sharp corner of the device, and reduces the fracture of the sharp corner and the occurrence of accidental injury to people.
Description
Technical Field
The utility model relates to the technical field of teaching aids, in particular to an annular triangular drawing device for mathematical teaching.
Background
Mathematics is a subject of the concepts of research quantity, structure, change, space, information and the like, and in human historical development and social life, the mathematics also plays irreplaceable roles and is also an essential basic tool for learning and researching modern science and technology, geometric figures are one of the foundations of learning mathematics, wherein triangles and circles are one of the most common figures, and when teaching and explaining are carried out, teachers generally need to draw a plurality of figures with different sizes for example verification, so that the teaching and explaining are completed by means of drawing devices.
The drawing devices on the market are various and can basically meet the use requirements of people, but certain defects still exist, and the specific problems are as follows.
(1) The existing drawing device has single function, generally can only finish triangular and circular drawing work, and is very inconvenient to use because the device needs to be repeatedly replaced when drawing figures with different shapes;
(2) when the existing drawing device is used, a teacher generally needs to hold the drawing device by hand to perform drawing operation, and arm ache is easily caused by holding the drawing device for a long time, so that improvement is needed;
(3) the sharp corner of the existing drawing device is generally exposed outside, which is easy to accidentally injure teachers or students, and the sharp corner is easy to break when the drawing device falls off, so that certain defects exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an annular triangular drawing device for mathematical education, and aims to solve the problems that the drawing device in the background art cannot simultaneously finish triangular and circular drawing work, and arm ache and sharp corner lack of protective measures are easily caused by drawing operation by hands.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an annular triangle drawing device is used in mathematics teaching, includes set square, right-angle side, semicircle ruler, angle bead structure and hypotenuse, the inside both sides of set square all are provided with the right-angle side, and the surface on right-angle side all marks the scale mark of equidistant, the inside one side of set square is provided with the hypotenuse, and the inside round hole that all is provided with equidistant of hypotenuse, the set square inside of hypotenuse both sides is provided with pushes away the post, and pushes away the one end of post and run through the set square and be fixed with positioning suction cup, the both ends of set square all are provided with the angle bead structure.
Preferably, the inside groove of accomodating that is provided with of set square of right angle limit position department, and the inside of accomodating the groove is provided with the telescopic link to the one end of telescopic link is connected with the internal rotation of accomodating the groove, and the other end of telescopic link is fixed with the ring, is convenient for draw the circle that the diameter is different.
Preferably, all be provided with the rectangle recess on the set square lateral wall of right-angle side position department, and the inside of rectangle recess is fixed with the magnetic path, is convenient for adsorb the device magnetism on the blackboard.
Preferably, the inside of angle bead structure has set gradually sponge angle bead, rubber inside lining and the protruding grain of friction, and the both ends of set square all are equipped with the sponge angle bead, have played the effect of protection to the closed angle of set square.
Preferably, be fixed with the rubber inside lining on the inner wall of sponge angle bead, and the surface of rubber inside lining all is provided with the protruding grain of friction, and the rubber inside lining closely laminates through the outer wall of the protruding grain of friction and set square for the sponge angle bead is difficult for droing.
Preferably, the set square on one side of the bevel edge is internally provided with equidistant semicircular rules, the radian of the semicircular rules is sequentially enlarged, equidistant angle lines are marked on the surfaces of the semicircular rules, so that the annular shape can be conveniently drawn, and the angle can be measured simultaneously.
Compared with the prior art, the utility model has the beneficial effects that: the annular triangular drawing device for mathematical education not only can simultaneously have the triangular and circular drawing functions, improves the convenience in use, can be adsorbed on a blackboard, does not need to be held by a teacher, is more labor-saving, but also is convenient to protect the sharp corner of the device, and reduces the fracture of the sharp corner and the occurrence of accidental injury to people;
(1) by arranging the right-angled sides, the scale marks, the hypotenuse, the round hole, the semicircle ruler, the angle line, the accommodating groove, telescopic link and ring, triangle can be drawn through the right-angled sides and the hypotenuse of set square, the scale marks on the surface of the right-angled sides can measure the length, simultaneously, the semicircle ruler inside the set square can draw the ring shape, the angle line on the surface of the semicircle ruler can measure the angle, the small circle can also be drawn through the round hole on the hypotenuse, and the telescopic link can be screwed out of the accommodating groove inside the set square, the chalk is clamped inside the ring, the length of the drawing link is adjusted, the radius of the circle is determined, the telescopic link is rotated again to drive the chalk to rotate in a fixed point, the circle is drawn, so that the device can simultaneously have the functions of triangle and the circle, the device does not need to be replaced, and the convenience in use is improved;
(2) the magnetic block is fixed in the rectangular groove, so that the triangular ruler is adsorbed on the magnetic blackboard through the magnetic block, if the blackboard is non-magnetic, the positioning sucker at one end of the triangular ruler can be adsorbed on the blackboard by pressing the push column to fix the triangular ruler, and a teacher does not need to hold the device by hands, so that the device is more labor-saving to use;
(3) through being provided with sponge angle bead, rubber inside lining and the protruding grain of friction, because the both ends cover of set square is equipped with the sponge angle bead, the sponge angle bead is soft material, has played the effect of protection to the closed angle of set square, and simultaneously, the rubber inside lining on the sponge angle bead inner wall is through the outer wall laminating of the protruding grain of friction and set square for the sponge angle bead is difficult for droing, thereby is convenient for protect the closed angle of device, has reduced the fracture of closed angle and the appearance of accidental injury people's condition.
Drawings
FIG. 1 is a schematic view of the front view of the present invention;
FIG. 2 is a schematic view of a rear view of the present invention;
FIG. 3 is a schematic view of a partial cross-sectional enlarged structure of the triangular ruler of the present invention;
fig. 4 is a schematic cross-sectional enlarged structure view of the corner protector structure of the present invention.
In the figure: 1. a set square; 2. a right-angle side; 3. scale lines; 4. a semicircular ruler; 5. an angle line; 6. a corner protection structure; 601. protecting the corners with sponge; 602. a rubber lining; 603. rubbing the convex particles; 7. pushing the column; 8. a bevel edge; 9. a circular hole; 10. positioning a sucker; 11. a rectangular groove; 12. a magnetic block; 13. a receiving groove; 14. a telescopic rod; 15. a circular ring.
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. 1-4, an embodiment of the present invention is shown: an annular triangular drawing device for mathematical education comprises a triangular ruler 1, right-angle sides 2, a semicircular ruler 4, a corner protection structure 6 and a bevel edge 8, wherein the right-angle sides 2 are arranged on two sides of the inside of the triangular ruler 1, and scale marks 3 with equal intervals are marked on the surfaces of the right-angle sides 2;
a containing groove 13 is formed in the triangular ruler 1 at the position of the right-angle side 2, a telescopic rod 14 is arranged in the containing groove 13, one end of the telescopic rod 14 is rotatably connected with the inside of the containing groove 13, and a circular ring 15 is fixed at the other end of the telescopic rod 14, so that circles with different diameters can be drawn conveniently;
one side of the inside of the triangular ruler 1 is provided with a bevel edge 8, and round holes 9 with equal intervals are arranged inside the bevel edge 8;
a push post 7 is arranged in the triangular ruler 1 at two sides of the bevel edge 8, one end of the push post 7 penetrates through the triangular ruler 1 and is fixed with a positioning sucker 10, and two ends of the triangular ruler 1 are provided with corner protection structures 6;
the sponge angle bead 601, the rubber lining 602 and the friction convex particles 603 are sequentially arranged in the angle bead structure 6, the sponge angle bead 601 is sleeved at each of two ends of the triangular ruler 1, the rubber lining 602 is fixed on the inner wall of the sponge angle bead 601, the friction convex particles 603 are arranged on the surface of the rubber lining 602, and the rubber lining 602 is tightly attached to the outer wall of the triangular ruler 1 through the friction convex particles 603;
because the both ends cover of set square 1 is equipped with sponge angle bead 601, sponge angle bead 601 is soft material, has played the effect of protection to the closed angle of set square 1, and simultaneously, rubber inside lining 602 on the sponge angle bead 601 inner wall is through the laminating of the protruding grain 603 of friction and set square 1's outer wall for sponge angle bead 601 is difficult for droing, thereby is convenient for protect the closed angle of device, has reduced the fracture of closed angle and the appearance of accidental injury people's condition.
The working principle is as follows: when the drawing device is used, firstly, a teacher holds the set square 1 and pastes the set square on a blackboard, a triangle can be drawn through the right-angle side 2 and the bevel side 8 of the set square 1, the scale line 3 on the surface of the right-angle side 2 can measure the length, meanwhile, a ring can be drawn through the semicircular ruler 4 inside the set square 1, the angle line 5 on the surface of the semicircular ruler 4 can measure the angle, a small circle can also be drawn through the round hole 9 on the bevel side 8, in addition, the telescopic rod 14 can be screwed out of the accommodating groove 13 inside the set square 1, a chalk is clamped inside the ring 15, the length of the telescopic rod 14 is adjusted, the radius of the circle is determined, the telescopic rod 14 is rotated to drive the chalk to be fixed-point rotated, the circle is drawn, therefore, the device can simultaneously have the drawing functions of the triangle and the circle, the device does not need to be replaced, the convenience in use is improved, then, when the device is used, because the side wall of the triangular ruler 1 is provided with the rectangular groove 11, the magnetic block 12 is fixed inside the rectangular groove 11, the triangular ruler 1 is adsorbed on the magnetic blackboard through the magnetic block 12, if the blackboard is non-magnetic, the positioning sucker 10 at one end of the triangular ruler can be adsorbed on the blackboard by pressing the push column 7, the set square 1 is fixed, so that a teacher does not need to hold the set square by hand, the use of the device is more labor-saving, and finally, because the two ends of the triangular ruler 1 are sleeved with the sponge angle bead 601, the sponge angle bead 601 is made of soft material, the protective device plays a role in protecting the sharp corners of the triangular ruler 1, and meanwhile, the rubber lining 602 on the inner wall of the sponge angle bead 601 is attached to the outer wall of the triangular ruler 1 through the friction convex particles 603, so that the sponge angle bead 601 is not easy to fall off, thereby be convenient for protect the closed angle of device, reduced the fracture of closed angle and the emergence of accidental injury people's condition, accomplish the work of annular triangle-shaped drawing device for mathematical education.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an annular triangle drawing device for mathematical education, includes set square (1), right-angle side (2), semicircle chi (4), angle bead structure (6) and hypotenuse (8), its characterized in that: the utility model discloses a set square, including set square (1), inclined plane (2), bevel edge (8), round hole (9) that equidistant are all marked on the surface of set square (1), the inside one side of set square (1) is provided with hypotenuse (8), and the inside of hypotenuse (8) all is provided with equidistant round hole (9), set square (1) inside of hypotenuse (8) both sides is provided with and pushes away post (7), and the one end that pushes away post (7) runs through set square (1) and is fixed with positioning suction cup (10), the both ends of set square (1) all are provided with angle bead structure (6).
2. The annular triangle drawing device for mathematics teaching as claimed in claim 1, wherein: the triangular ruler is characterized in that a containing groove (13) is formed in the triangular ruler (1) at the position of the right-angle side (2), a telescopic rod (14) is arranged in the containing groove (13), one end of the telescopic rod (14) is connected with the containing groove (13) in a rotating mode, and a circular ring (15) is fixed to the other end of the telescopic rod (14).
3. The annular triangle drawing device for mathematics teaching as claimed in claim 1, wherein: rectangular grooves (11) are formed in the side walls of the set square (1) at the positions of the right-angle sides (2), and magnetic blocks (12) are fixed inside the rectangular grooves (11).
4. The annular triangle drawing device for mathematics teaching as claimed in claim 1, wherein: the novel angle bead is characterized in that a sponge angle bead (601), a rubber lining (602) and friction convex particles (603) are sequentially arranged in the angle bead structure (6), and the sponge angle bead (601) is sleeved at two ends of the triangular ruler (1).
5. The annular triangle drawing device for mathematics teaching as claimed in claim 4, wherein: the rubber lining (602) is fixed on the inner wall of the sponge corner protector (601), friction convex grains (603) are arranged on the surface of the rubber lining (602), and the rubber lining (602) is tightly attached to the outer wall of the triangular ruler (1) through the friction convex grains (603).
6. The annular triangle drawing device for mathematics teaching as claimed in claim 1, wherein: set square (1) inside of hypotenuse (8) one side all is fixed with equidistant semicircle chi (4), and the radian of semicircle chi (4) enlarges in proper order, and the surface of semicircle chi (4) all marks angular line (5) with equidistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120352207.0U CN215360670U (en) | 2021-02-08 | 2021-02-08 | Annular triangle drawing device for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120352207.0U CN215360670U (en) | 2021-02-08 | 2021-02-08 | Annular triangle drawing device for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215360670U true CN215360670U (en) | 2021-12-31 |
Family
ID=79622712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120352207.0U Expired - Fee Related CN215360670U (en) | 2021-02-08 | 2021-02-08 | Annular triangle drawing device for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215360670U (en) |
-
2021
- 2021-02-08 CN CN202120352207.0U patent/CN215360670U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |