CN209756569U - Ellipse drawing device for high school mathematics teaching - Google Patents
Ellipse drawing device for high school mathematics teaching Download PDFInfo
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- CN209756569U CN209756569U CN201821815569.3U CN201821815569U CN209756569U CN 209756569 U CN209756569 U CN 209756569U CN 201821815569 U CN201821815569 U CN 201821815569U CN 209756569 U CN209756569 U CN 209756569U
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- sleeve
- ruler
- longitudinal shaft
- shaft rod
- drawing device
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Abstract
the utility model relates to the technical field of teaching aids, in particular to an elliptical drawing device for high school mathematics teaching, which comprises an elliptical drawing device body, wherein the elliptical drawing device body comprises a telescopic ruler sleeve, the telescopic ruler sleeve consists of a female ruler sleeve and a male ruler sleeve, and the male ruler sleeve is arranged in the female ruler sleeve; the female ruler sleeve comprises a sleeve shell, the sleeve shell is rectangular, the bottom of the left end of the sleeve shell is an arc surface, a wire outlet is formed in the top of the left end of the sleeve shell, and the right end surface of the sleeve shell is open; the outlet is square, a first longitudinal shaft rod is arranged on the right side of the upper part in the outlet, and a first carrier roller is sleeved on the first longitudinal shaft rod; a barrel sleeve is arranged on the upper portion of the left side face of the wire outlet, internal threads are arranged in the barrel sleeve, a screw rod is screwed in the barrel sleeve, a compression ball is arranged at the inner end of the screw rod, and a nut is arranged at the outer end of the screw rod; the drawing machine has the advantages of being fast, simple and convenient to draw, saving drawing time, increasing teaching time and greatly improving teaching efficiency.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a teaching aid technical field, concretely relates to high school mathematics teaching is with oval drawing device.
[ background of the invention ]
people pay more and more attention to education at present, and the high school education stage is used as a basic education stage. Chinese, mathematics and English are used as basic subjects and have heavier specific gravity. When high school figures are used for teaching, teachers often need more time to draw ellipses when teaching ellipses and writing on a blackboard for demonstration, and classroom teaching time is wasted, so that classroom teaching time of the teachers is shortened, teaching question time is shortened, and interaction time between teachers and students is shortened. And the teacher does not do oval teaching aid in the aspect of the teaching aid, so basic above-mentioned reason, in order to improve teaching efficiency, specially innovate the teaching aid, designs a teaching aid that conveniently draws the ellipse, satisfies the teaching needs.
[ Utility model ] content
An object of the utility model is to provide an ellipse drawing device is used in high school's mathematical education to prior art's defect and not enough.
The utility model relates to an ellipse drawing device for high school mathematics teaching, which comprises an ellipse drawing device body, wherein the ellipse drawing device body comprises a telescopic ruler sleeve, the telescopic ruler sleeve consists of a main ruler sleeve and a sub ruler sleeve, and the sub ruler sleeve is arranged in the main ruler sleeve;
The female ruler sleeve comprises a sleeve shell, the sleeve shell is rectangular, the bottom of the left end of the sleeve shell is an arc surface, a wire outlet is formed in the top of the left end of the sleeve shell, and the right end surface of the sleeve shell is open; the outlet is square, a first longitudinal shaft rod is arranged on the right side of the upper part in the outlet, and a first carrier roller is sleeved on the first longitudinal shaft rod; a barrel sleeve is arranged on the upper portion of the left side face of the wire outlet, internal threads are arranged in the barrel sleeve, a screw rod is screwed in the barrel sleeve, a compression ball is arranged at the inner end of the screw rod, and a nut is arranged at the outer end of the screw rod;
a second longitudinal shaft rod is arranged at the left side part in the casing, the section of the second longitudinal shaft rod is circular, circular baffles are correspondingly arranged at two sides of the rod body of the second longitudinal shaft rod in the casing, and an annular wire slot is formed between the two circular baffles; a rod head at one end of the longitudinal shaft rod II penetrates through the through hole I in the left side in front of the casing to the outside, a rocker arm is arranged on the rod head of the longitudinal shaft rod II extending out of the casing, and a longitudinal handle is arranged at the bottom end of the rocker arm; eight pin holes I are uniformly formed in the periphery of a longitudinal shaft rod II on the left side part of the casing sleeve, a pin hole II is formed in the position, corresponding to the pin hole I, of the lower part of the rocker arm, and the rocker arm is fixed on the casing sleeve of the master ruler sleeve through the pin rod penetrating through the pin hole II and the pin hole I; a third longitudinal shaft rod and a fourth longitudinal shaft rod are arranged on the left side of the second longitudinal shaft rod in the shell, a second guide roller and a third guide roller are respectively sleeved on the second longitudinal shaft rod and the third longitudinal shaft rod, the bottom ends of the second guide roller and the third guide roller are positioned on the same horizontal line, and the left side surface of the third guide roller and the left side surface of the first carrier roller are positioned on the same vertical surface;
A transverse guide groove is formed in the right side in the casing, a square stop block is arranged at the left end of the transverse guide groove, a sub-ruler sleeve is arranged in the groove guide groove, and the right end head of the sub-ruler sleeve extends out of the right side end of the casing; the ruler sleeve is rectangular, a vertical plate is arranged on the outer end head of the ruler sleeve, the vertical plate is rectangular, and a circular line hole is formed in the top of the vertical plate;
A rope is wound on the annular wire groove, and the left end of the rope bypasses the guide roller II and the guide roller III to the support roller I to the outside and is connected with the circular wire hole on the vertical plate; the pencil sleeve is arranged on the rope;
The right side of the front surface of the shell is provided with a shell through hole, the surface of the shell through hole is provided with a nut, a fastening nut is screwed in the nut, and the bottom end of the fastening nut is provided with a circular rubber block.
Furthermore, the left side and the right side of the back surface of the casing are correspondingly provided with suckers.
Further, the right side of the front surface of the casing is provided with a first scale mark layer.
Furthermore, a second scale mark layer is arranged on the surface of the sub ruler sleeve.
Furthermore, a third scale mark layer is coated on the surface of the rope line.
Further, the pencil barrel casing includes the cylindricality barrel casing, and the cross-section of cylindricality barrel casing is circular, and cylindricality barrel casing right flank middle part is provided with the barrel casing centre bore, and the lower part correspondence is provided with expanding spring on the right flank in the cylindricality barrel casing, and the overhead arc clamp plate that is provided with in outer end of two expanding spring, the right flank middle part of arc clamp plate is provided with the telescopic link, and the barrel casing centre bore to outer of cylindricality barrel casing right flank has been alternated to the telescopic link right-hand member, is provided with circular protruding dish on the outer end pole head of telescopic link.
After the structure is adopted, the utility model discloses beneficial effect does: the utility model relates to an ellipse drawing device for high school mathematics teaching, which adopts a telescopic ruler to position two ends of a long axis of an ellipse to form two fixed points, and draws by a rope line with adjustable length, thereby being convenient to draw the ellipse on a blackboard quickly to facilitate teaching; the drawing machine has the advantages of being fast, simple and convenient to draw, saving drawing time, increasing teaching time and greatly improving teaching efficiency.
[ description of the drawings ]
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
Fig. 3 is a schematic view of the back structure of the present invention;
fig. 4 is a schematic structural view of the pencil barrel casing of the present invention.
description of reference numerals:
1. an elliptical drawing device body; 2. a housing; 3. a sub-ruler sleeve; 4. a second scale mark layer; 5. a nut; 6. Fastening a nut; 7. a vertical plate; 8. a first graduation layer; 9. a first pin hole; 10. a pencil barrel sleeve; 101. a cylindrical sleeve; 102. an arc-shaped pressing plate; 103. a tension spring; 104. a circular convex disc; 11. a rope thread; 12. a circular baffle; 13. a third guide roller; 14. a longitudinal handle; 15. a pin rod; 16. a second guide roller; 17. a nut; 18. a barrel sleeve; 19. pressing the ball; 20. a first longitudinal shaft rod; 21. a first carrier roller; 22. an outlet; 23. and (4) sucking discs.
[ detailed description ] embodiments
The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and the description are only for the purpose of explanation, but not for the purpose of limitation.
As shown in fig. 1 to 4, the elliptical drawing device for high school mathematics teaching according to the present embodiment includes an elliptical drawing device body 1, the elliptical drawing device body 1 includes a telescopic ruler sleeve, the telescopic ruler sleeve is composed of a main ruler sleeve and a sub ruler sleeve 3, the sub ruler sleeve 3 is disposed in the main ruler sleeve;
The female ruler sleeve comprises a sleeve shell 2, the sleeve shell 2 is rectangular, the bottom of the left end of the sleeve shell 2 is an arc surface, a wire outlet 22 is formed in the top of the left end of the sleeve shell 2, and the right end surface of the sleeve shell 2 is open; the outlet 22 is square, a first longitudinal shaft rod 20 is arranged on the right side of the inner upper part of the outlet 22, and a first carrier roller 21 is sleeved on the first longitudinal shaft rod 20; a cylinder sleeve 18 is arranged at the upper part of the left side surface of the outlet 22, internal threads are arranged in the cylinder sleeve 18, a screw is screwed in the cylinder sleeve 18, a compression ball 19 is arranged at the inner end of the screw, and a nut 17 is arranged at the outer end of the screw;
A second longitudinal shaft rod is arranged at the left side part in the casing 2, the section of the second longitudinal shaft rod is circular, circular baffles 12 are correspondingly arranged at two sides of the rod body in the casing 2 of the second longitudinal shaft rod, and an annular wire slot is formed between the two circular baffles 12; a rod head at one end of the second longitudinal shaft rod penetrates through the first through hole at the left side in front of the casing 2 to the outside, a rocker arm is arranged on the rod head of the second longitudinal shaft rod extending out of the casing 2, and a longitudinal handle 14 is arranged at the bottom end of the rocker arm; eight pin holes I9 are uniformly formed in the periphery of a longitudinal shaft rod II on the left side part of the casing 2, a pin hole II is formed in the position, corresponding to the pin hole I9, of the lower part of the rocker arm, and the rocker arm is fixed on the casing 2 of the female ruler casing through a pin rod 15 penetrating through the pin hole II and the pin hole I; a third longitudinal shaft rod and a fourth longitudinal shaft rod are arranged on the left side of the second longitudinal shaft rod in the housing 2, a second guide roller 16 and a third guide roller 13 are respectively sleeved on the second longitudinal shaft rod and the third longitudinal shaft rod, the bottom ends of the second guide roller 16 and the third guide roller 13 are positioned on the same horizontal line, and the left side surface of the third guide roller 13 and the left side surface of the first carrier roller 21 are positioned on the same vertical surface;
A transverse guide groove is formed in the right side in the casing 2, a square stop block is arranged at the left end of the transverse guide groove, a sub-ruler sleeve 3 is arranged in the groove guide groove, and the right end head of the sub-ruler sleeve 3 extends out of the right end of the casing 2; the sub ruler sleeve 3 is rectangular, a vertical plate 7 is arranged on the outer end head of the sub ruler sleeve 3, the vertical plate 7 is rectangular, and a circular line hole is formed in the top of the vertical plate 7;
A rope 11 is wound on the annular wire groove, and the left end of the rope 11 bypasses the second guide roller 16, the third guide roller 13 and the first carrier roller 21 to the outside and is connected with the circular wire hole on the vertical plate 7; the pencil sleeve 10 is arranged on the rope line 11;
the right side of the front surface of the shell 2 is provided with a shell through hole, the shell through hole is provided with a nut 5 on the surface, a fastening nut 6 is screwed in the nut 5, and the bottom end of the fastening nut 6 is provided with a circular rubber block.
furthermore, the left side and the right side of the back surface of the shell 2 are correspondingly provided with suckers 23.
Further, a first scale mark layer 8 is arranged on the right side of the front surface of the shell 2.
further, a second scale mark layer 4 is arranged on the surface of the sub ruler sleeve 3.
Furthermore, a third scale mark layer is coated on the surface of the rope line 11.
further, the pencil barrel sleeve 10 comprises a cylindrical barrel sleeve 101, the cross section of the cylindrical barrel sleeve 101 is circular, a barrel sleeve center hole is formed in the middle of the right side face of the cylindrical barrel sleeve 101, the upper portion and the lower portion of the inner right side face of the cylindrical barrel sleeve 101 are correspondingly provided with expansion springs 103, arc-shaped pressing plates 102 are arranged on the outer end heads of the two expansion springs 103, a telescopic rod is arranged in the middle of the right side face of each arc-shaped pressing plate 102, the right end face of the telescopic rod penetrates through the barrel sleeve center hole in the right side face of the cylindrical barrel sleeve 101 to the outside, and a circular convex disc 104.
The working principle of the utility model is as follows:
in this design, the teacher can use different teaching aids to assist drawing when the blackboard is taught, conveniently imparts knowledge to students. When the design is used, the fastening nut 6 is screwed to enable the sub-ruler sleeve 3 to move in the transverse guide groove in the sleeve shell 2 of the mother ruler sleeve, at the moment, the left side surface of the carrier roller I21 of the wire outlet 22 is equivalent to one focus in an ellipse (forming a first positioning point), the circular wire hole in the vertical plate 7 of the outer end of the sub-ruler sleeve 3 is equivalent to the other focus in the ellipse (forming a second positioning point), the distance between the two positioning points is 2c in an ellipse formula, then the fastening nut 6 is screwed, and the circular rubber block at the bottom end of the fastening nut 6 is tightly abutted to the sub-ruler sleeve 3 to be fixed.
In this design, 2 front surfaces of cover shell are provided with scale mark layer 8, and 0 scales of the left end of scale mark layer 8 are in same perpendicular with the left end face of bearing roller 21, consequently outside sub-ruler cover 3 stretched out cover shell 2, are provided with scale mark layer two 4 on the sub-ruler cover 3, conveniently calculate the distance between two focuses.
Then the pin rod 15 is pulled out, the longitudinal handle 14 is shaken, the cord wound on the annular wire groove is loosened, the third scale mark layer is coated on the surface of the cord 11, the fastening of the cord 11 is 0 scale mark below the circular wire hole on the vertical plate 7, so that the length value of the cord 11 is checked, the length of the cord 11 is 2a in the elliptic formula, then the screw cap 17 is screwed to drive the screw rod connected with the screw rod, the screw rod rotates in the barrel sleeve 18, and the screw rod drives the pressing ball 19 at the inner end of the screw rod to move inwards to the left side face of the first carrier roller 21 to press the cord 11. The scale of the point at this position of the string 11 is 2 a.
in this design, the back left and right sides correspondence of cover 2 is provided with sucking disc 23, utilizes the suction of sucking disc 23, conveniently fixes cover 2 on the blackboard.
In the design, the top surface and the bottom surface of the cylindrical sleeve 101 are open, so that chalk can be conveniently inserted; the circular convex disc 104 is pulled outwards, so that the arc-shaped pressing plate 102 moves towards the outer side in the cylindrical barrel sleeve 101, chalk is inserted into the cylindrical barrel sleeve 101 of the pencil barrel sleeve 10, the circular convex disc 104 is loosened, and under the elastic force recovery of the telescopic spring 103, the arc-shaped pressing plate 102 is tightly pressed on the chalk, so that the chalk is fixed on the cylindrical barrel sleeve 101; finally, an ellipse is drawn on the blackboard by the chalk using the string 11.
the utility model relates to an ellipse drawing device for high school mathematics teaching, which adopts a telescopic ruler to position two ends of a long axis of an ellipse to form two fixed points, and draws by a rope line with adjustable length, thereby being convenient to draw the ellipse on a blackboard quickly to facilitate teaching; the drawing machine has the advantages of being fast, simple and convenient to draw, saving drawing time, increasing teaching time and greatly improving teaching efficiency.
the above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.
Claims (6)
1. The utility model provides an ellipse drawing device is used in high school's mathematics teaching which characterized in that: the elliptical drawing device comprises an elliptical drawing device body (1), wherein the elliptical drawing device body (1) comprises a telescopic ruler sleeve, the telescopic ruler sleeve consists of a main ruler sleeve and a sub ruler sleeve (3), and the sub ruler sleeve (3) is arranged in the main ruler sleeve;
the female ruler sleeve comprises a sleeve shell (2), the sleeve shell (2) is rectangular, the bottom of the left end of the sleeve shell (2) is an arc surface, a wire outlet (22) is formed in the top of the left end of the sleeve shell (2), and the right end face of the sleeve shell (2) is open; the outlet (22) is square, a first longitudinal shaft rod (20) is arranged on the right side of the upper inner part of the outlet (22), and a first carrier roller (21) is sleeved on the first longitudinal shaft rod (20); a barrel sleeve (18) is arranged on the upper portion of the left side face of the outlet (22), internal threads are arranged in the barrel sleeve (18), a screw rod is screwed in the barrel sleeve (18), a pressing ball (19) is arranged at the inner end of the screw rod, and a nut (17) is arranged at the outer end of the screw rod;
A second longitudinal shaft rod is arranged at the left side part in the casing (2), the section of the second longitudinal shaft rod is circular, circular baffles (12) are correspondingly arranged at two sides of the rod body in the casing (2) of the second longitudinal shaft rod, and an annular wire slot is formed between the two circular baffles (12); a rod head at one end of the second longitudinal shaft rod penetrates through the first through hole at the left side in front of the casing (2) to the outside, a rocker arm is arranged on the rod head of the second longitudinal shaft rod extending out of the casing (2), and a longitudinal handle (14) is arranged at the bottom end of the rocker arm; eight pin holes I (9) are uniformly formed in the periphery of a longitudinal shaft rod II on the left side portion of the casing sleeve (2), a pin hole II is formed in the position, corresponding to the pin hole I (9), of the lower portion of the rocker arm, and the rocker arm is fixed on the casing sleeve (2) of the mother ruler sleeve through a pin rod (15) penetrating through the pin hole II and the pin hole I; a third longitudinal shaft rod and a fourth longitudinal shaft rod are arranged on the left side of a second longitudinal shaft rod in the housing (2), a second guide roller (16) and a third guide roller (13) are respectively sleeved on the second longitudinal shaft rod and the third longitudinal shaft rod, the bottom ends of the second guide roller (16) and the third guide roller (13) are positioned on the same horizontal line, and the left side surface of the third guide roller (13) and the left side surface of the first carrier roller (21) are positioned on the same vertical plane;
A transverse guide groove is formed in the right side in the casing (2), a square stop block is arranged at the left end of the transverse guide groove, a sub-ruler sleeve (3) is arranged in the groove guide groove, and the right end head of the sub-ruler sleeve (3) extends out of the right side end of the casing (2); the ruler sleeve (3) is rectangular, a vertical plate (7) is arranged on the outer end head of the ruler sleeve (3), the vertical plate (7) is rectangular, and a circular line hole is formed in the top of the vertical plate (7);
A rope (11) is wound on the annular wire groove, and the left end of the rope (11) bypasses the second guide roller (16) and the third guide roller (13) to the first carrier roller (21) to the outside and is connected with a circular wire hole on the vertical plate (7); the pencil sleeve (10) is arranged on the rope (11); the right side of the front surface of the shell (2) is provided with a shell through hole, the surface of the shell through hole is provided with a nut (5), a fastening nut (6) is screwed in the nut (5), and the bottom end of the fastening nut (6) is provided with a circular rubber block.
2. The ellipse drawing device for high school mathematics teaching as claimed in claim 1, wherein: the left side and the right side of the back surface of the casing (2) are correspondingly provided with suckers (23).
3. the ellipse drawing device for high school mathematics teaching as claimed in claim 1, wherein: the right side of the front surface of the housing (2) is provided with a first scale mark layer (8).
4. The ellipse drawing device for high school mathematics teaching as claimed in claim 1, wherein: and a second scale mark layer (4) is arranged on the surface of the sub-ruler sleeve (3).
5. The ellipse drawing device for high school mathematics teaching as claimed in claim 1, wherein: and a third scale mark layer is coated on the surface of the rope line (11).
6. the ellipse drawing device for high school mathematics teaching as claimed in claim 1, wherein: the pencil barrel sleeve (10) comprises a cylindrical barrel sleeve (101), the cross section of the cylindrical barrel sleeve (101) is circular, a barrel sleeve center hole is formed in the middle of the right side face of the cylindrical barrel sleeve (101), expansion springs (103) are correspondingly arranged on the upper portion and the lower portion of the right side face in the cylindrical barrel sleeve (101), arc-shaped pressing plates (102) are arranged on the outer ends of the two expansion springs (103) in a head mode, a telescopic rod is arranged in the middle of the right side face of the arc-shaped pressing plates (102), the right end face of the telescopic rod penetrates through the barrel sleeve center hole in the right side face of the cylindrical barrel sleeve (101) to the outside, and a circular convex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821815569.3U CN209756569U (en) | 2018-11-06 | 2018-11-06 | Ellipse drawing device for high school mathematics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821815569.3U CN209756569U (en) | 2018-11-06 | 2018-11-06 | Ellipse drawing device for high school mathematics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209756569U true CN209756569U (en) | 2019-12-10 |
Family
ID=68744288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821815569.3U Expired - Fee Related CN209756569U (en) | 2018-11-06 | 2018-11-06 | Ellipse drawing device for high school mathematics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209756569U (en) |
-
2018
- 2018-11-06 CN CN201821815569.3U patent/CN209756569U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 Termination date: 20211106 |