CN212171786U

CN212171786U - Drawing compasses

Info

Publication number: CN212171786U
Application number: CN202020298291.8U
Authority: CN
Inventors: 张翼
Original assignee: Nanjing Institute of Mechatronic Technology
Current assignee: Nanjing Institute of Mechatronic Technology
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-12-18
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a drawing compasses, including central stabilizer blade, the bottom diameter of central stabilizer blade diminishes gradually and forms needle-like structure, is equipped with on the central stabilizer blade to wind central stabilizer blade pivoted horizontal pole, and the horizontal pole is perpendicular with central stabilizer blade, is equipped with on the horizontal pole to slide on the horizontal pole and removes the stabilizer blade, and the bottom of removing the stabilizer blade is fixed with the pencil. During drawing, the bottom of center stabilizer blade is fixed in the centre of a circle department that needs the drawing circle, rotates the horizontal pole and makes the pencil draw the circle with the center stabilizer blade to the purpose of drawing the circle is realized, during drawing, the equal perpendicular to working face of center stabilizer blade and removal stabilizer blade, and it is convenient to draw, and difficult appearance can't the closed condition of circle during drawing, and the circle quality of drawing is high.

Description

Drawing compasses

Technical Field

The utility model relates to a drawing tool technical field, in particular to drawing compasses.

Background

In industrial production, construction work and school teaching, circles are usually drawn, usually by compasses or pendulums. When the compasses are used for drawing circles, one foot of the compasses needs to be fixed, the other foot of the compasses rotates to draw circles, and the support legs of the compasses need to incline when the circles are drawn, so that the drawn circles are irregular easily. In addition, if a picture is drawn on the paper, the fixed support leg of the compasses can easily damage the paper.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a drawing compasses, its advantage can be used to draw the circle, and the circle high quality of drawing.

The above object of the utility model is realized through following technical scheme, a drawing compasses, including central stabilizer blade, the bottom diameter of central stabilizer blade diminishes gradually and forms needle-like structure, is equipped with on the central stabilizer blade to wind central stabilizer blade pivoted horizontal pole, and the horizontal pole is perpendicular with central stabilizer blade, is equipped with on the horizontal pole to be equipped with gliding removal stabilizer blade on the horizontal pole, and the bottom of removing the stabilizer blade is fixed with the pencil.

Through above-mentioned technical scheme, during the drawing, the bottom of center stabilizer blade is fixed in the centre of a circle department that needs the drawing circle, rotates the horizontal pole and makes the pencil draw the circle with the center stabilizer blade to realize the purpose of drawing the circle, during the drawing, center stabilizer blade and the equal perpendicular to working face of removal stabilizer blade, the drawing is convenient, and difficult the unable closed condition of circle that appears during the drawing, the circle high quality of drawing.

The utility model discloses further set up to, the waist type groove that link up about the intermediate position of horizontal pole is equipped with, removes the stabilizer blade and passes waist type groove, is equipped with the joint on the stabilizer blade and forms and the slidingtype between the horizontal pole is connected with the jack catch on the horizontal pole.

Through above-mentioned technical scheme, remove the stabilizer blade and can connect the intermediate position at the horizontal pole, be convenient for prepare to control and remove the distance between stabilizer blade and the central stabilizer blade, the radius of circle promptly, when needing to change the size of circle, promote in waist type groove and remove the stabilizer blade can.

The utility model discloses further set up to, threaded connection has the locking screw who is used for the horizontal pole of contradicting on removing the stabilizer blade.

Through above-mentioned technical scheme, the fixed stabilizer blade that removes when locking screw screws, makes and removes the stabilizer blade and can not remove relative horizontal pole, moves when drawing the circle and keeps relatively stable between stabilizer blade and the horizontal pole.

The utility model discloses further set up to, be equipped with first scale on the horizontal pole, scale on the first scale indicates central stabilizer blade central line and removes the distance between the stabilizer blade central line.

Through the technical scheme, the distance between the movable support leg and the central support leg, namely the radius of the circle, can be directly obtained from the graduated scale, and the circle with the specified size can be conveniently drawn.

The utility model discloses further set up to, be equipped with the vernier on the removal stabilizer blade, the outer wall of vernier laminating horizontal pole is equipped with the second scale on the vernier, and the vernier caliper of ten graduation or twenty graduation or fifty graduations is constituteed to first scale and second scale.

Through above-mentioned technical scheme, set up the second scale and can improve measuring precision, first scale and second scale utilize the principle of similar slide caliper's dislocation reading to improve the precision.

The utility model discloses further set up to, the lower half that removes the stabilizer blade is three splint that are the circumference and arrange, has the gap to separate between the three splint, and the bottom of splint is equipped with the terminal surface of slope, and the outside threaded connection of three splint has a locking overcoat, is equipped with in the locking overcoat to be used for the promotion plane of contradicting with the splint terminal surface, and when the locking overcoat upwards screwed, the promotion plane promoted three splint shrink and is used for pressing from both sides tight pencil.

Through above-mentioned technical scheme, press from both sides tight pencil through three splint and make the central line of pencil can with the central line height coincidence that removes the stabilizer blade, guarantee to coincide with the radius of drawing the circle as far as through the data that first scale and second scale reachd, guarantee to draw the accuracy of circle size.

The utility model discloses further set up to, still include a supporting seat, the supporting seat is made by rubber, and the supporting seat is cylindrical and locate to open at the center has the mounting hole, and the diameter of mounting hole is less than the diameter of center stabilizer blade bottom, and the supporting seat is used for inserting the bottom at center stabilizer blade with the support center stabilizer blade.

Through above-mentioned technical scheme, support through rubber material's supporting seat supports on the face that needs draw the circle, reduces the destruction to drawing the circle, is particularly suitable for when drawing the circle on materials such as paper, glass, ceramic tile.

The utility model discloses further set up to, be equipped with the limiting plate on the central stabilizer blade, the limiting plate equals the height of supporting seat to the distance of central stabilizer blade bottom.

Through above-mentioned technical scheme, when installing the supporting seat in the bottom of center stabilizer blade, contradict the supporting seat and can make the supporting seat installation target in place on the limiting plate, make things convenient for the installation of supporting seat, simultaneously, in the application process, because blockking of limiting plate, the supporting seat is difficult for continuing the rebound and makes the bottom closed angle of center stabilizer blade expose and destroy the drawing face.

To sum up, the beneficial effects of the utility model are that:

1, the situation that the drawn circle cannot be closed easily occurs, and the quality of the drawn circle is high;

2. the radius of the drawn circle can be visually obtained by arranging the first graduated scale and the second graduated scale, and the precision is high;

3. set up the supporting seat and be difficult for destroying the drawing face when making the drawing to can be applicable to drawing on more materials.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a schematic view of a cross bar in this embodiment;

FIG. 4 is an enlarged view at B in FIG. 1;

fig. 5 is a cross-sectional view at C-C in fig. 4.

In the figure, 1, a central leg; 2. a cross bar; 3. a movable support leg; 4. a pencil; 5. a waist-shaped groove; 6. a claw; 7. locking the screw; 8. a first scale; 9. a cursor; 10. a second scale; 11. a splint; 12. locking the outer sleeve; 13. pushing the plane; 14. a supporting seat; 15. mounting holes; 16. and a limiting plate.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Example (b): referring to fig. 1-5, a drawing compass comprises a central support leg 1, wherein the diameter of the bottom of the central support leg 1 is gradually reduced to form a needle-shaped structure, a cross rod 2 capable of rotating around the central support leg 1 is arranged on the central support leg 1, the cross rod 2 is perpendicular to the central support leg 1, a movable support leg 3 capable of sliding on the cross rod 2 is arranged on the cross rod 2, and a pencil 4 is fixed at the bottom of the movable support leg 3. During drawing, the centre of a circle department that the circle needs to be drawn is fixed in the bottom of center stabilizer blade 1, rotates horizontal pole 2 and makes pencil 4 draw the circle with center stabilizer blade 1 to realize the purpose of drawing the circle, during drawing, center stabilizer blade 1 with remove the equal perpendicular to working face of stabilizer blade 3, it is convenient to draw, and difficult the unable closed condition of circle that appears during drawing, the circle quality of drawing is high.

The waist-shaped groove 5 that link up from top to bottom is equipped with to the intermediate position of horizontal pole 2, moves stabilizer blade 3 and passes waist-shaped groove 5, moves and is equipped with the jack catch 6 formation of joint on horizontal pole 2 on the stabilizer blade 3 and is connected with the slidingtype between horizontal pole 2. The movable support leg 3 can be connected to the middle position of the cross bar 2, so that the distance between the movable support leg 3 and the central support leg 1, namely the radius of a circle, can be conveniently controlled, and when the size of the circle needs to be changed, the movable support leg 3 is pushed in the kidney-shaped groove 5. The movable support leg 3 is connected with a locking screw for abutting against the cross rod 2 through threads. The locking screw fixes the movable support leg 3 when screwed, so that the movable support leg 3 can not move relative to the cross rod 2, and the movable support leg 3 and the cross rod 2 are kept relatively stable when drawing circles.

Be equipped with first scale 8 on the horizontal pole 2, the scale on the first scale 8 indicates the distance between 1 central line of center stabilizer blade and the 3 central lines of removal stabilizer blade. The scale is millimeter. The distance between the movable support leg 3 and the central support leg 1, namely the radius of the circle, can be directly obtained from the graduated scale, and the circle with the specified size can be conveniently drawn. Be equipped with vernier 9 on the removal stabilizer blade 3, vernier 9 laminating horizontal pole 2's outer wall is equipped with second scale 10 on the vernier 9, and first scale 8 and second scale 10 constitute ten graduation or twenty graduation or fifty graduation's slide caliper. The second scale 10 is arranged to improve the accuracy of the measurement, and the first scale 8 and the second scale 10 utilize the principle of the dislocation reading similar to that of a vernier caliper to improve the accuracy. If need draw the circle of appointed size, promote to move stabilizer blade 3 and slide on horizontal pole 2, when reading for the radius of appointed circle on first scale 8 and the second scale 10 can.

The lower half of removal stabilizer blade 3 is three splint 11 that are the circumference and arrange, has the gap to separate between the three splint 11, and the bottom of splint 11 is equipped with the terminal surface of slope, and the outside threaded connection of three splint 11 has a locking overcoat 12, is equipped with in the locking overcoat 12 to be equipped with and is used for the promotion plane 13 of contradicting with splint 11 terminal surface, and when locking overcoat 12 upwards screwed, promotes plane 13 and promotes three splint 11 shrink and be used for pressing from both sides tight pencil 4. The pencil 4 is clamped by the three clamping plates 11, so that the center line of the pencil 4 can be highly overlapped with the center line of the movable support leg 3, the data obtained by the first graduated scale 8 and the second graduated scale 10 are ensured to be matched with the radius of a drawn circle as far as possible, and the accuracy of the size of the drawn circle is ensured.

The embodiment also comprises a supporting seat 14, the supporting seat 14 is made of rubber, the supporting seat 14 is cylindrical, a mounting hole 15 is formed in the center of the supporting seat 14, the diameter of the mounting hole 15 is smaller than that of the bottom of the central support leg 1, and the supporting seat 14 is used for being inserted into the bottom of the central support leg 1 to support the central support leg 1. The support seat 14 made of rubber is supported on the surface needing drawing circles, damage to the drawing circles is reduced, and the support seat is particularly suitable for drawing circles on materials such as paper, glass and ceramic tiles. A limiting plate 16 is arranged on the central support leg 1, and the distance from the limiting plate 16 to the bottom end of the central support leg 1 is equal to the height of the supporting seat 14. When installing supporting seat 14 in the bottom of center stabilizer blade 1, contradict supporting seat 14 and can make supporting seat 14 install in place on limiting plate 16, make things convenient for the installation of supporting seat 14, simultaneously, in application process, because stopping of limiting plate 16, supporting seat 14 is difficult for continuing the rebound and makes the bottom closed angle of center stabilizer blade 1 expose and destroy the drawing face.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims

1. The drawing compass is characterized by comprising a central support leg (1), wherein the diameter of the bottom of the central support leg (1) is gradually reduced to form a needle-shaped structure, a transverse rod (2) capable of rotating around the central support leg (1) is arranged on the central support leg (1), the transverse rod (2) is perpendicular to the central support leg (1), a movable support leg (3) capable of sliding on the transverse rod (2) is arranged on the transverse rod (2), and a pencil (4) is fixed at the bottom of the movable support leg (3).

2. The drawing compasses according to claim 1, wherein a waist-shaped groove (5) running through from top to bottom is provided in the middle of the cross bar (2), the moving support leg (3) passes through the waist-shaped groove (5), and a claw (6) clamped on the cross bar (2) is provided on the moving support leg (3) to form a sliding connection with the cross bar (2).

3. Drawing compass according to claim 2, wherein the movable support (3) is screwed with a locking screw for abutting against the cross-bar (2).

4. The drawing compasses according to claim 3, characterized in that the cross bar (2) is provided with a first graduated scale (8), the graduation on the first graduated scale (8) indicating the distance between the center line of the central support leg (1) and the center line of the movable support leg (3).

5. The drawing compasses according to claim 4, wherein a vernier (9) is arranged on the movable support leg (3), the vernier (9) is attached to the outer wall of the cross bar (2), a second graduated scale (10) is arranged on the vernier (9), and the first graduated scale (8) and the second graduated scale (10) form a vernier caliper with ten divisions, twenty divisions or fifty divisions.

6. The drawing compass according to claim 5, wherein the lower half portion of the movable support leg (3) is divided into three clamping plates (11) arranged in a circle, the three clamping plates (11) are separated by a gap, the bottom of each clamping plate (11) is provided with an inclined end face, the outer sides of the three clamping plates (11) are in threaded connection with a locking outer sleeve (12), a pushing plane (13) used for abutting against the end faces of the clamping plates (11) is arranged in the locking outer sleeve (12), and when the locking outer sleeve (12) is screwed upwards, the pushing plane (13) pushes the three clamping plates (11) to contract so as to clamp the pencil (4).

7. The drawing compass according to any one of claims 1-6, further comprising a support base (14), wherein the support base (14) is made of rubber, the support base (14) is cylindrical and has a mounting hole (15) formed at a center thereof, the mounting hole (15) has a diameter smaller than that of a bottom of the center leg (1), and the support base (14) is adapted to be inserted into the bottom of the center leg (1) to support the center leg (1).

8. The drawing compass according to claim 7, wherein the central leg (1) is provided with a limiting plate (16), and the distance from the limiting plate (16) to the bottom end of the central leg (1) is equal to the height of the support seat (14).