CN217259336U

CN217259336U - Circle drawing auxiliary device for mathematics and applied mathematics

Info

Publication number: CN217259336U
Application number: CN202220891318.3U
Authority: CN
Inventors: 张博
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-08-23
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a circle drawing auxiliary device for mathematics and applied mathematics, which comprises a rotary handle and a connecting rod, wherein the outer wall of the lower end of the rotary handle is provided with the connecting rod, the outer wall of the lower end of the connecting rod is provided with a fixed block, the left side and the right side in the fixed block are respectively provided with a rotary rod and a fixed rod, the outer walls of the rotary rod and the fixed rod are respectively provided with a fixing device near the upper side, the inner parts of the rotary rod and the fixed rod near the lower side are respectively provided with an adjusting device, the outer wall of the bottom end of the rotary rod is provided with a pencil, the fixing device is composed of a slide rail, a slide groove, a rectangular plate and a locking screw, the fixing device can fix the rotary rod and the fixed rod after the adjusted circle diameter needing to be drawn when the compasses are used, thus, the compasses are prevented from easily deviating when the circle is drawn, and the length of the fixed rod and the rotary rod can be increased by the adjusting device, this allows it to draw circles of larger diameter.

Description

Circle drawing auxiliary device for mathematics and applied mathematics

Technical Field

The utility model belongs to the technical field of drawing the circle is supplementary, concretely relates to a draw circle auxiliary device for mathematics and applied mathematics.

Background

The auxiliary device for drawing circles for mathematics mainly refers to a compasses which is a tool for drawing circles or strings in mathematics and drawing and is commonly used for drawing by rulers and compasses.

The prior circle drawing auxiliary technology has the following problems: 1. the traditional compasses cannot be well fixed when in use, and the diameter is easy to change when drawing circles; 2. the traditional compasses can not adjust the length and can not draw circles with too large diameters.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a draw circle auxiliary device for mathematics and applied mathematics to solve the fixed and great circle of drawing some of length can not be adjusted when drawing the circle that provides in the above-mentioned background art and in the problem.

In order to achieve the above object, the utility model provides a following technical scheme: a circle drawing auxiliary device for mathematics and applied mathematics comprises a rotary handle and a connecting rod, wherein the outer wall of the lower end of the rotary handle is provided with the connecting rod, the outer wall of the lower end of the connecting rod is provided with a fixed block, the left side and the right side in the fixed block are respectively provided with a rotary rod and a fixed rod, the outer walls of the rotary rod and the fixed rod are both provided with a fixing device close to the upper side, the inner parts of the rotary rod and the fixed rod close to the lower side are both provided with an adjusting device, the outer wall of the bottom end of the rotary rod is provided with a pencil, the outer wall of the bottom end of the fixed rod is provided with a nail foot, the fixing device is jointly formed by a slide rail, a slide groove, a rectangular plate and a locking screw, the rectangular plate is arranged in the rectangular plate, the outer wall of the front end of the rotary rod and the fixed rod is close to the upper side and is provided with the locking screw, the adjusting device is composed of an adjusting rod, a spring buckle and grooves, the adjusting rod is arranged inside the fixing rod and close to the lower side of the fixing rod, the spring buckle is arranged on the outer wall of the right end of the adjusting rod, and a plurality of grooves are formed in the outer wall of the right end of the fixing rod and close to the lower side of the fixing rod.

Preferably, the surface of the rotating handle is provided with threads, and the rotating handle and the fixed block are fixedly connected through welding.

Preferably, the rotating rod and the fixing rod are both made of stainless steel, and the vertical lengths of the rotating rod and the fixing rod are equal.

Preferably, the rectangular plate is made of aluminum alloy, and the rotating rod and the fixing rod can slide in the sliding rail.

Preferably, the surfaces of the rectangular plates are polished, and the locking screws can be completely attached to the outer wall of the front end of the rectangular plate after being screwed down.

Preferably, the adjusting rod can slide in the fixed rod, and the adjusting rod can be fixed in position through a spring buckle and a groove.

Compared with the prior art, the utility model provides a draw circle auxiliary device for mathematics and applied mathematics possesses following beneficial effect:

1. the utility model discloses an increased fixing device on rotary rod and dead lever, this fixing device can be fixed rotary rod and dead lever behind the circle diameter that needs drawing that the compasses were adjusted when using, just so avoided it to take place the skew easily when drawing the circle rotatory, thereby the circle that leads to required drawing has some deviations, can give dead lever and rotary rod through the device and fix, then just can not take place the skew in the time of drawing the circle, just can draw the circle of required diameter, can not wipe redrawing because of the dislocation when rotatory drawing the circle, certain time has been practiced thrift, the device specifically uses the flow as follows: when the diameter of a circle to be drawn is measured on the ruler, firstly, the locking screws on the fixed rod and the rotary rod are loosened, then the fixed rod and the rotary rod can be pulled away towards two sides through the fixed block, the locking screws are screwed after the diameter is measured, at the moment, the rotary rod and the fixed rod can be fixed through the locking screws, and then errors caused by deviation can be avoided when the circle is drawn;

2. the utility model discloses an at the inside adjusting device that has increased of lower extreme of dead lever and rotary rod, this adjusting device can increase the length of dead lever and rotary rod, just so can make it draw some more major diameter's circle, has avoided traditional compasses can draw the diameter range undersize of circle, can't draw through traditional compasses when needing some major diameter's circle, and the device specifically uses the flow as follows: when the circle of some major diameters is drawn to needs, at first press the spring buckle above dead lever and the rotary rod, adjust the pole this moment and can follow the inside regulation that removes of dead lever and rotary rod, can increase the length of dead lever and rotary rod this moment, then can draw the circle of some major diameters, will notice when adjusting and adjust the same length to rotary rod and dead lever, otherwise just have the deviation when drawing the circle.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic structural view of a circle drawing auxiliary device for mathematics and applied mathematics according to the present invention;

fig. 2 is a schematic structural view of the fixing device of the present invention in use;

fig. 3 is a schematic structural view of the adjusting device provided by the present invention;

fig. 4 is a schematic structural view of the adjusting device according to the present invention in use;

in the figure: 1. rotating the handle; 2. a connecting rod; 3. a fixed block; 4. rotating the rod; 5. a fixing device; 6. an adjustment device; 7. a pencil; 8. nailing feet; 9. fixing the rod; 10. a slide rail; 11. a chute; 12. a rectangular plate; 13. locking screws; 14. adjusting a rod; 15. a spring buckle; 16. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a circle drawing auxiliary device for mathematics and applied mathematics, which comprises: a circle drawing auxiliary device for mathematics and applied mathematics comprises a rotary handle 1 and a connecting rod 2, wherein the outer wall of the lower end of the rotary handle 1 is provided with the connecting rod 2, the outer wall of the lower end of the connecting rod 2 is provided with a fixed block 3, the left side and the right side inside the fixed block 3 are respectively provided with a rotary rod 4 and a fixed rod 9, the outer walls of the rotary rod 4 and the fixed rod 9 close to the upper side are respectively provided with a fixing device 5, the inner parts of the rotary rod 4 and the fixed rod 9 close to the lower side are respectively provided with an adjusting device 6, the outer wall of the bottom end of the rotary rod 4 is provided with a pencil 7, the outer wall of the bottom end of the fixed rod 9 is provided with a nail foot 8, the fixing device 5 is composed of a slide rail 10, a slide groove 11, a rectangular plate 12 and a locking screw 13, the outer walls of the rotary rod 4 and the fixed rod 9 close to the upper side are respectively sleeved with the rectangular plate 12, the slide rail 10 is arranged inside the slide groove 11, the slide rail 10 is arranged inside the rotary rod 4 and the fixed rod 9, the adjusting device 6 is composed of an adjusting rod 14, a spring buckle 15 and grooves 16, the adjusting rod 14 is arranged inside the fixing rod 9 close to the lower side, the spring buckle 15 is arranged on the outer wall of the right end of the adjusting rod 14, and the grooves 16 are arranged on the outer wall of the right end of the fixing rod 9 close to the lower side.

Rotatory 1 surface of handle is provided with the screw thread, and rotatory handle 1 and fixed block 3 pass through welded fastening and connect, and the surface is provided with the screw thread and can be in its laminating finger more when rotatory, and very easy emergence drops, can make its whole frame firm inseparabler through welded fastening and connect, can not take place the condition of scattered frame when using.

Rotating rod 4 and dead lever 9 all adopt the stainless steel to make, and the vertical length of rotating rod 4 and dead lever 9 equals, adopts the stainless steel to make and to make its hardness and intensity higher, can also increase its life, and vertical length equals can make its diameter of drawing the circle when drawing the circle can not take place the error.

Rectangular plate 12 adopts the aluminum alloy to make, and rotary rod 4 and dead lever 9 all can slide in slide rail 10 is inside, adopt the aluminum alloy to make at first make its light more, can not too much increase the holistic weight of compasses, and rotary rod 4 and dead lever 9 all can make things convenient for its diameter of adjusting the required drawing circle in slide rail 10 is inside to slide.

Rectangular plate 12 surface all is through burnishing and polishing, can laminate completely after locking screw 13 screws up at rectangular plate 12 front end outer wall, and through burnishing and polishing make its surperficial more smooth, can also make it not very easy just rustting simultaneously, laminate completely and fix rotary rod 4 and dead lever 9 on rectangular plate 12 that rectangular plate 12 front end outer wall can be better, can not make it take place the skew when drawing the circle.

The adjusting rod 14 can slide in the fixing rod 9, the adjusting rod 14 can be fixed in position through the spring buckle 15 and the groove 16, the adjusting rod 14 can slide in the fixing rod 9 to adjust the length of the rotating rod 4 and the fixing rod 9 conveniently, and the position is fixed through the spring buckle 15 and the groove 16 to fix the adjusting rod 14 in the rotating rod 4 and the fixing rod 9 conveniently after the length is adjusted.

The utility model discloses a theory of operation and use flow: after the utility model is installed, when a circle needs to be drawn, the locking screw 13 is firstly unscrewed, then the rotary rod 4 and the fixed rod 9 can be pulled open through the fixed block 3, after the diameter of the circle needs to be drawn is measured, then the rotating rod 4 and the fixed rod 9 can be fixed on the rectangular plate 12 by screwing the locking screw 13, at the moment, the rotating rod 4 and the fixed rod 9 can not generate deviation when drawing a circle, a circle with a required diameter can be obtained, when a circle with a larger diameter needs to be drawn, the spring buckle 15 on the outer wall of the right end of the adjusting rod 14 is firstly pressed down, then the adjusting rod 14 can be adjusted in the fixing rod 9 and the rotating rod 4 in a sliding mode, when the adjusting rod is adjusted to be in a proper length, the spring buckle 15 is popped out of the groove 16 again, the adjusting rod 14 can be fixed in the rotating rod 4 and the fixing rod 9, and then a circle with a large diameter can be made.

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

Claims

1. A draw circle auxiliary device for mathematics and applied mathematics, includes rotation handle (1) and connecting rod (2), its characterized in that: the outer wall of the lower end of the rotating handle (1) is provided with a connecting rod (2), the outer wall of the lower end of the connecting rod (2) is provided with a fixed block (3), the left side and the right side inside the fixed block (3) are respectively provided with a rotating rod (4) and a fixed rod (9), the outer walls of the rotating rod (4) and the fixed rod (9) are close to the upside and are respectively provided with a fixing device (5), the inner parts of the rotating rod (4) and the fixed rod (9) close to the downside are respectively provided with an adjusting device (6), the outer wall of the bottom end of the rotating rod (4) is provided with a pencil (7), the outer wall of the bottom end of the fixed rod (9) is provided with a nail foot (8), the fixing device (5) is jointly composed of a sliding rail (10), a sliding groove (11), a rectangular plate (12) and a locking screw (13), the outer walls of the rotating rod (4) and the fixed rod (9) are close to the upside and are respectively sleeved with the rectangular plate (12), rectangular plate (12) inside be provided with slide rail (10), rectangular plate (12) front end outer wall is provided with spout (11), rotary rod (4) and dead lever (9) front end outer wall are close to the upside and are located spout (11) inside and all are provided with locking screw (13), adjusting device (6) comprises regulation pole (14), spring buckle (15) and recess (16) jointly, dead lever (9) inside is close to the downside and is provided with regulation pole (14), it is provided with spring buckle (15) to adjust pole (14) right-hand member outer wall, dead lever (9) right-hand member outer wall is close to the downside and is provided with a plurality of recesses (16).

2. A circle drawing aid for mathematics and applied mathematics, as claimed in claim 1, wherein: the surface of the rotating handle (1) is provided with threads, and the rotating handle (1) is fixedly connected with the fixing block (3) through welding.

3. A circle drawing aid for mathematics and applied mathematics, as claimed in claim 1, wherein: the rotary rod (4) and the fixed rod (9) are both made of stainless steel, and the vertical lengths of the rotary rod (4) and the fixed rod (9) are equal.

4. A circle drawing aid for mathematics and applied mathematics, as claimed in claim 1, wherein: the rectangular plate (12) is made of aluminum alloy, and the rotating rod (4) and the fixing rod (9) can slide in the sliding rail (10).

5. A circle drawing aid for mathematics and applied mathematics, as claimed in claim 1, wherein: the surface of the rectangular plate (12) is polished, and the locking screw (13) can be completely attached to the outer wall of the front end of the rectangular plate (12) after being screwed down.

6. A circle drawing aid for mathematics and applied mathematics, as recited in claim 1, wherein: the adjusting rod (14) can slide in the fixing rod (9), and the adjusting rod (14) can be fixed in position through a spring buckle (15) and a groove (16).