CN215705366U - Compass capable of improving drawing effect - Google Patents
Compass capable of improving drawing effect Download PDFInfo
- Publication number
- CN215705366U CN215705366U CN202120941255.3U CN202120941255U CN215705366U CN 215705366 U CN215705366 U CN 215705366U CN 202120941255 U CN202120941255 U CN 202120941255U CN 215705366 U CN215705366 U CN 215705366U
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- Prior art keywords
- cylinder
- drawing effect
- compasses
- improving
- thimble
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- 230000000694 effects Effects 0.000 title claims abstract description 36
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of teaching, in particular to a compasses capable of improving drawing effect, which enables small circles to be drawn more stably and improves drawing effect; including drum, thimble, connecting piece, landing leg and propelling pencil, the thimble passes the drum and is located inside the drum, and the thimble bottom is provided with the syringe needle, and the drum top is provided with first thread groove, is provided with first convex thread on the outer lane of thimble top, and the connecting piece left end is connected with drum top right-hand member, is provided with the axle on the landing leg, and the landing leg passes through axle and connecting piece rotatable coupling, and landing leg bottom right-hand member is connected with the propelling pencil left end.
Description
Technical Field
The utility model relates to the technical field of teaching, in particular to compasses capable of improving drawing effect.
Background
Compasses are tools used for drawing circles or strings, are commonly used for drawing by ruler and compasses, and are widely applied to junior middle school mathematics geometric learning; the method comprises the steps of 1, measuring the distance between two feet of the compasses by using a ruler as a radius; 2. fixing one end with a needle at one place as a circle center; 3. rotating one end with the pencil for one circle; when the existing compasses draw circles with smaller radiuses, the compasses rotate unstably due to the fact that two feet of the compasses are too close to each other, so that the drawn circles are not smooth and regular, and the drawn circles are poor in effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides the compasses capable of improving the drawing effect, which enables the drawing of a small circle to be more stable and improves the drawing effect.
The compasses capable of improving the drawing effect comprise a cylinder, an ejector pin, a connecting piece, a supporting leg and a mechanical pencil, wherein the ejector pin penetrates through the cylinder and is positioned in the cylinder, a needle head is arranged at the bottom end of the ejector pin, a first thread groove is formed in the top end of the cylinder, a first convex thread is arranged on the outer ring of the top of the ejector pin, the left end of the connecting piece is connected with the right end of the top of the cylinder, a shaft is arranged on the supporting leg, the supporting leg is rotatably connected with the connecting piece through the shaft, and the right end of the bottom of the supporting leg is connected with the left end of the mechanical pencil.
The compasses capable of improving the drawing effect further comprise a screw rod and a threaded cylinder, wherein a first long hole is formed in the middle of the thimble, the screw rod penetrates through the cylinder and the first long hole respectively, the screw rod and the cylinder are rotatably connected through a bearing, sliding blocks are arranged at the front end and the rear end of the threaded cylinder, a threaded through hole is formed in the left end of the threaded cylinder, a second long hole is formed in the supporting leg, sliding grooves are formed in the front end and the rear end of the second long hole, and the threaded cylinder is in sliding and rotatable connection with the supporting leg.
The compasses capable of improving the drawing effect further comprise a bolt, a hexagonal head and a nut, holes are formed in the front end and the rear end of the right part of the connecting piece, a hexagonal groove is formed in the rear end of the hole in the rear side, the bolt penetrates through the two holes respectively, the rear end of the bolt is connected with the front end of the hexagonal head, the hexagonal head is located in the hexagonal groove, and the nut is screwed at the front end of the bolt.
The compasses capable of improving the drawing effect further comprise a protective sleeve, wherein a circular groove is formed in the top end of the protective sleeve, a second thread groove is formed in the top end of the circular groove, a second convex thread is arranged on the outer ring at the bottom end of the ejector pin, and the protective sleeve is screwed at the bottom end of the cylinder.
The compasses capable of improving the drawing effect further comprise a rotating handle, and the right end of the rotating handle is connected with the left end of the screw rod.
The compasses capable of improving the drawing effect further comprise a top plate, and the bottom end of the top plate is connected with the top end of the ejector pin.
The compasses capable of improving the drawing effect have the advantages that the top end of the top plate is provided with the spherical groove.
According to the compasses capable of improving the drawing effect, the anti-skidding soft pad is arranged outside the protective sleeve.
Compared with the prior art, the utility model has the beneficial effects that: with first thread spiral shell dress on first thread groove, the distance between the two feet of adjustment compasses is as the radius, fix the syringe needle in a place as the centre of a circle, it makes propelling pencil rotatory a week to rotate the drum top, can accomplish the drawing of great circle, draw less circle when needs, break off first thread groove and the connection of first thread, make the syringe needle fix in a place, and make thimble level perpendicular, the distance between the two feet of adjustment compasses, it makes propelling pencil rotatory a week to rotate the drum top, can accomplish the drawing of small circle, it is more stable when making the drawing small circle, the effect of drawing has been improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
FIG. 4 is an enlarged view of the portion C of FIG. 1;
in the drawings, the reference numbers: 1. a cylinder; 2. a thimble; 3. a needle head; 4. a first thread groove; 5. a first male thread; 6. a connecting member; 7. a shaft; 8. a support leg; 9. a mechanical pencil; 10. a first long hole; 11. a screw; 12. a threaded barrel; 13. a slider; 14. a second long hole; 15. a chute; 16. a hexagonal groove; 17. a bolt; 18. a hexagonal head; 19. a nut; 20. a protective sleeve; 21. a circular groove; 22. a second thread groove; 23. a second male thread; 24. rotating the handle; 25. a top plate; 26. a spherical groove.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
As shown in fig. 1 to 4, the compasses capable of improving drawing effect of the utility model comprise a cylinder 1, an ejector pin 2, a connecting piece 6, a supporting leg 8 and a mechanical pencil 9, wherein the ejector pin 2 penetrates through the cylinder 1 and is positioned in the cylinder 1, the bottom end of the ejector pin 2 is provided with a needle head 3, the top end of the cylinder 1 is provided with a first thread groove 4, the top outer ring of the ejector pin 2 is provided with a first convex thread 5, the left end of the connecting piece 6 is connected with the right end of the top of the cylinder 1, the supporting leg 8 is provided with a shaft 7, the supporting leg 8 is rotatably connected with the connecting piece 6 through the shaft 7, and the right end of the bottom of the supporting leg 8 is connected with the left end of the mechanical pencil 9; with 5 spiral shell dresses of first convex thread on first thread groove 4, the distance between the two feet of adjustment compasses is as the radius, fix syringe needle 3 in a place as the centre of a circle, it makes propelling pencil 9 rotatory a week to rotate 1 top of drum, can accomplish the drawing of great circle, draw less circle when needs, break off first thread groove 4 and the connection of first convex thread 5, make syringe needle 3 fix in a place, and make 2 level verticality of thimble, adjust the distance between the two feet of compasses, it makes propelling pencil 9 rotatory a week to rotate 1 top of drum, can accomplish the drawing of small circle, it is more stable when making the drawing small circle, the effect of drawing has been improved.
The compasses capable of improving the drawing effect further comprise a screw rod 11 and a threaded cylinder 12, wherein a first long hole 10 is formed in the middle of the thimble 2, the screw rod 11 penetrates through the cylinder 1 and the first long hole 10 respectively, the screw rod 11 and the cylinder 1 are rotatably connected through a bearing, sliding blocks 13 are arranged at the front end and the rear end of the threaded cylinder 12, a threaded through hole is formed in the left end of the threaded cylinder 12, a second long hole 14 is formed in the supporting leg 8, sliding grooves 15 are formed in the front end and the rear end of the second long hole 14, and the threaded cylinder 12 and the supporting leg 8 are in sliding and rotatable connection; when drawing less circle, make screw rod 11 right-hand member spiral shell dress in the screw hole of screw thread section of thick bamboo 12, rotate screw rod 11 left end and make screw thread section of thick bamboo 12 drive landing leg 8 and remove, through the position of screw rod 11 rotation fine setting landing leg 8, make the radius of adjustment small circle more accurate, improved the convenience of using.
The compasses capable of improving the drawing effect further comprise a bolt 17, a hexagonal head 18 and a nut 19, wherein holes are formed in the front end and the rear end of the right part of the connecting piece 6, a hexagonal groove 16 is formed in the rear end of the hole on the rear side, the bolt 17 penetrates through the two holes respectively, the rear end of the bolt 17 is connected with the front end of the hexagonal head 18, the hexagonal head 18 is located in the hexagonal groove 16, and the nut 19 is screwed at the front end of the bolt 17; the rotating force of the supporting leg 8 is adjusted through the rotating nut 19, the supporting leg 8 and the connecting piece 6 are prevented from being too loose to be used due to rotation, and the practicability is improved.
The compasses capable of improving the drawing effect further comprise a protective sleeve 20, wherein a circular groove 21 is formed in the top end of the protective sleeve 20, a second thread groove 22 is formed in the top end of the circular groove 21, a second convex thread 23 is formed in the outer ring at the bottom end of the ejector pin 2, and the protective sleeve 20 is screwed at the bottom end of the cylinder 1; the protective sleeve 20 protects the needle 3, and when the compasses are not used, the protective sleeve 20 is screwed at the bottom end of the cylinder 1, so that the needle 3 is prevented from hurting people, and the safety is improved.
The compasses capable of improving the drawing effect further comprise a rotating handle 24, wherein the right end of the rotating handle 24 is connected with the left end of the screw rod 11; the rotating handle 24 is arranged, so that the screw 11 can be rotated more conveniently and more conveniently, and the use convenience is improved.
The compasses capable of improving the drawing effect further comprise a top plate 25, and the bottom end of the top plate 25 is connected with the top end of the thimble 2; the contact area between the hand and the thimble 2 is increased by arranging the top plate 25, so that the thimble 2 is better stabilized, and the practicability is improved.
The compasses capable of improving drawing effect of the utility model are characterized in that the top end of a top plate 25 is provided with a spherical groove 26; the top plate 25 is better stabilized by fingers through the spherical groove 26, and the convenience of operation is improved.
According to the compasses capable of improving the drawing effect, the anti-skidding soft pad is arranged outside the protective sleeve 20; the friction force between the hand and the protective sleeve 20 is increased by arranging the anti-skidding soft cushion, so that the protective sleeve 20 is more convenient and labor-saving to rotate, and the practicability is improved.
The compasses capable of improving the drawing effect have the advantages that when the compasses work, the first convex thread 5 is screwed on the first thread groove 4, the distance between two feet of the compasses is adjusted to be used as a radius, the needle head 3 is fixed at a place to be used as a circle center, the top end of the cylinder 1 is rotated to enable the propelling pencil 9 to rotate for one circle, the drawing of a larger circle can be completed, when a smaller circle needs to be drawn, the connection between the first thread groove 4 and the first convex thread 5 is disconnected, the needle head 3 is fixed at a place, the thimble 2 is horizontally vertical, the right end of the screw rod 11 is screwed in the threaded hole of the threaded cylinder 12, the left end of the screw rod 11 is rotated to enable the threaded cylinder 12 to drive the supporting leg 8 to move left and right, the position of the supporting leg 8 is finely adjusted through the rotation of the screw rod 11, the radius of a small circle is more accurate, the propelling pencil 9 is rotated for one circle by rotating the top end of the cylinder 1, the drawing of the small circle can be completed, the small circle can be more stable, the drawing effect is improved.
The compasses capable of improving the drawing effect have the advantages that the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the compasses can be implemented as long as the beneficial effects of the compasses can be achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The compasses capable of improving the drawing effect are characterized by comprising a cylinder (1), an ejector pin (2), a connecting piece (6), support legs (8) and a mechanical pencil (9), wherein the ejector pin (2) penetrates through the cylinder (1) and is located inside the cylinder (1), a needle head (3) is arranged at the bottom end of the ejector pin (2), a first thread groove (4) is formed in the top end of the cylinder (1), a first convex thread (5) is arranged on the outer ring of the top of the ejector pin (2), the left end of the connecting piece (6) is connected with the right end of the top of the cylinder (1), a shaft (7) is arranged on the support legs (8), the support legs (8) are rotatably connected with the connecting piece (6) through the shaft (7), and the bottom of the support legs (8) is connected with the left end of the mechanical pencil (9).
2. The compasses capable of improving drawing effect according to claim 1, further comprising a screw rod (11) and a threaded cylinder (12), wherein a first long hole (10) is formed in the middle of the thimble (2), the screw rod (11) respectively penetrates through the cylinder (1) and the first long hole (10), the screw rod (11) and the cylinder (1) are rotatably connected through a bearing, sliding blocks (13) are respectively arranged at the front end and the rear end of the threaded cylinder (12), a threaded through hole is formed in the left end of the threaded cylinder (12), a second long hole (14) is formed in the support leg (8), sliding grooves (15) are formed in the front end and the rear end of the second long hole (14), and the threaded cylinder (12) and the support leg (8) are slidably and rotatably connected.
3. The compasses capable of improving drawing effect according to claim 1, further comprising a bolt (17), a hexagon head (18) and a nut (19), wherein the front and rear ends of the right part of the connecting piece (6) are provided with holes, the rear end of the hole at the rear side is provided with a hexagon groove (16), the bolt (17) passes through the two holes respectively, the rear end of the bolt (17) is connected with the front end of the hexagon head (18), the hexagon head (18) is positioned in the hexagon groove (16), and the nut (19) is screwed on the front end of the bolt (17).
4. The compasses capable of improving drawing effect according to claim 1, further comprising a protective sleeve (20), wherein a circular groove (21) is formed at the top end of the protective sleeve (20), a second thread groove (22) is formed at the top end of the circular groove (21), a second convex thread (23) is formed on the outer ring of the bottom end of the thimble (2), and the protective sleeve (20) is screwed at the bottom end of the cylinder (1).
5. The compasses capable of improving drawing effect according to claim 2, further comprising a rotary handle (24), wherein the right end of the rotary handle (24) is connected with the left end of the screw rod (11).
6. The compasses capable of improving drawing effect according to claim 1, further comprising a top plate (25), wherein the bottom end of the top plate (25) is connected with the top end of the thimble (2).
7. The compasses for improving drawing effect according to claim 6, wherein the top of the top plate (25) is provided with a spherical groove (26).
8. The compasses of claim 4, wherein the protective sleeve (20) is externally provided with a non-slip pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120941255.3U CN215705366U (en) | 2021-04-30 | 2021-04-30 | Compass capable of improving drawing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120941255.3U CN215705366U (en) | 2021-04-30 | 2021-04-30 | Compass capable of improving drawing effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215705366U true CN215705366U (en) | 2022-02-01 |
Family
ID=80030553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120941255.3U Expired - Fee Related CN215705366U (en) | 2021-04-30 | 2021-04-30 | Compass capable of improving drawing effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215705366U (en) |
-
2021
- 2021-04-30 CN CN202120941255.3U patent/CN215705366U/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: 20220201 |