Ellipse auxiliary instrument
By designing an ellipse assist device, the combination of main rod, legs and line disks is used to solve the problems of cumbersome and inaccurate existing ellipse drawing tools, and the rapid and accurate drawing of ellipse is achieved.
Patent Information
- Application Number
- CN202420283255.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-06
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-02-06
AI Technical Summary
The existing ellipse drawing tools are cumbersome and not accurate enough, making it difficult to quickly draw ellips of different specifications.
An elliptical auxiliary device is designed, including main rod, legs and line disk. By adjusting the length and angle of the legs, combined with the combination of compass and thin lines, the ellipse is simple and fast.
It realizes the convenient drawing of ellipses under known focal points and major axis or minor axis conditions, which is easy to operate and is suitable for ellipses of different specifications.
Smart Images
Figure CN222431946U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drawing tools, and more specifically, particularly to an ellipse auxiliary instrument. Background Art
[0002] As people's living standards continue to improve, the requirements for the portability and precision of tools are getting higher and higher, and there are more and more scenarios where irregular shapes such as ellipses are needed, such as teaching geometry and engineering drawing.
[0003] It is difficult for people to draw a regular ellipse by hand, and they often waste a lot of precious time on drawing ellipses. The existing ellipse drawing methods have disadvantages when used. For example, using a compass to draw an ellipse is very cumbersome when drawing. For this reason, we propose an ellipse auxiliary drawing tool.
[0004] The existing ellipse compasses are of cross type and compass type. The cross type chute consists of a bottom plate, a rotating rod and a slider connected to the rotating rod. However, when the connection state of the rotating rod and the slider is switched, an offset will occur, resulting in the accuracy of the ellipse. In addition, the cross type occupies a large area, and the size of the ellipse is limited by the cross type area. The compass type has one more foot than the ordinary compass for drawing an ellipse, but it requires frequent manual adjustment operations to draw an ellipse, which is not automated and is more troublesome. For this reason, an ellipse auxiliary instrument is proposed, which can draw an ellipse in a simple and fast way. Utility Model Content
[0005] The utility model aims to provide an ellipsoid auxiliary instrument to solve the problems existing in the prior art.
[0006] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides an ellipse auxiliary instrument, including: a main rod, the main rod including a first main rod and a second main rod, a spring is arranged between the first main rod and the second main rod, the first main rod is sleeved with the second main rod, and the second main rod is connected to a compass; a leg, the leg is rotatably connected to the first main rod, the leg includes a first leg and a second leg, the first leg is slidably connected to the second leg, and a compass refill is connected to the bottom of the second leg; a wire drum, the wire drum is fixedly connected to one side of the second leg.
[0007] Furthermore, a hand-held end is arranged at the top of the first main rod, and a clamping end is arranged at the bottom. A clamping hook is arranged on the clamping end, and the interior of the clamping end is a hollow structure.
[0008] Furthermore, a slide cylinder is provided at the top of the second main rod, and the slide cylinder is a hollow structure. A clamping ring is also provided on the second main rod, and the clamping ring is located at the bottom of the slide cylinder. The bottom of the second main rod is a hollow structure.
[0009] Furthermore, one end of the spring is connected to the inside of the clamping end, and the other end is connected to the inside of the slide cylinder, and the slide cylinder is sleeved inside the clamping end.
[0010] Furthermore, the hook is adapted to the snap ring.
[0011] Furthermore, a connecting plate is fixedly connected to one side of the first main rod, a through hole is formed at the top of the first leg, a fixing rod is provided to pass through the through hole, and both ends of the fixing rod are connected to the connecting plate.
[0012] Furthermore, a sliding end is provided at the bottom of the first leg, a convex strip and a fixing bolt are fixedly connected to the bottom of the sliding end, and the fixing bolt is located at the top of the convex strip.
[0013] Furthermore, a first slot and a second slot are formed at the top of the second leg, the first slot and the second slot are vertically distributed, the first slot is matched with the sliding end, the second slot is matched with the convex strip, and a nut is provided to match the fixing bolt, and the first leg and the second leg are fixed by the nut and the fixing bolt.
[0014] Furthermore, a third slot is provided at the bottom of the second leg, and the third slot is used for placing a compass replacement.
[0015] Furthermore, a protrusion is provided on one side of the second leg, and the protrusion is used to fix the thin wire in the wire reel.
[0016] The utility model discloses the following technical effects:
[0017] The second main rod is sleeved on the top of the compass and fixes the compass. The two corners of the compass are fixed at the two foci of the ellipse on the plane. The positional relationship between the first leg and the second leg is adjusted to adjust the length of the leg. The length of the leg is adjusted to intersect with the plane. After the thin wire in the coil is pulled out to surround the two corners of the compass, the first main rod is rotated to rotate the leg to draw the ellipse. When the focus and the major axis or minor axis are known, the ellipse can be easily drawn by using this device. Pressing the first main rod facilitates the adjustment of the angle and length of the leg. The operation is convenient. The length of the leg can be adjusted through the first leg and the second leg, which is convenient for drawing ellipses of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a structural schematic diagram of the main rod in the utility model;
[0021] Figure 3 It is a structural schematic diagram of the first main rod in the utility model;
[0022] Figure 4 It is a structural schematic diagram of the legs and coils in the utility model;
[0023] Among them, 1. the first main rod; 2. the hand-held end; 3. the clamping end; 4. the hook; 5. the connecting plate; 6. the fixing rod; 7. the spring; 8. the second main rod; 9. the slide; 10. the clamping ring; 11. the first leg; 12. the through hole; 13. the convex strip; 14. the sliding end; 15. the fixing bolt; 16. the second leg; 17. the first slot; 18. the second slot; 19. the third slot; 20. the nut; 21. the wire reel; 22. the protrusion. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0026] like Figure 1-Figure 4 As shown, the utility model provides an ellipsometer, comprising: a main rod, the main rod comprising a first main rod 1 and a second main rod 8, a spring 7 is arranged between the first main rod 1 and the second main rod 8, the first main rod 1 and the second main rod 8 are sleeved, and the second main rod 8 is connected to a compass; a leg, the leg is rotatably connected to the first main rod 1, the leg comprises a first leg 11 and a second leg 16, the first leg 11 and the second leg 16 are detachably installed, and a compass refill is connected to the bottom of the second leg 16; a wire drum 21, and the wire drum 21 is fixedly connected to one side of the second leg 16.
[0027] A hand-held end 2 is arranged at the top of the first main rod 1, and the hand-held end 2 has a polygonal structure, which is convenient for operators to hold and prevent the hand from slipping and becoming unable to turn when drawing an ellipse; a clamping end 3 is arranged at the bottom of the first main rod 1, and a hook 4 is arranged at the bottom of the clamping end 3, and the inside of the clamping end 3 is a hollow structure.
[0028] A slide cylinder 9 is arranged on the top of the second main rod 8, and the interior of the slide cylinder 9 is a hollow structure. A clamping ring 10 is also arranged on the second main rod 8, and the clamping ring 10 is located at the bottom of the slide cylinder 9. The bottom of the second main rod 8 is a hollow structure.
[0029] The first main rod 1 is connected to the second main rod 8 by a spring 7, one end of the spring 7 is connected to the inside of the clamping end 3, and the other end is connected to the inside of the slide 9, the slide 9 is sleeved inside the clamping end 3, and the hook 4 below the clamping end 3 is clamped to the snap ring 10. The first main rod 1 is pressed, and the clamping end 3 below the first main rod 1 slides downward along the slide 9, and the spring 7 is compressed. When the first main rod 1 is released, the first main rod 1 slides upward along the slide 9 under the elastic force of the spring 7 until the hook 4 is clamped with the snap ring 10. The first main rod 1 and the second main rod 8 can slide up and down and can also rotate around the second main rod 8. The hook 4 and the snap ring 10 are provided to facilitate the first main rod 1 to rotate around the second main rod 8. The rotation of the first main rod 1 can drive the support leg to rotate, which is convenient for drawing an ellipse.
[0030] The bottom of the second main rod 8 is set as a hollow structure, which is convenient for fitting a compass. The second main rod 8 is fitted on the top of the compass and the compass is fixed by bolts and nuts to facilitate drawing an ellipse with the compass.
[0031] According to the definition of an ellipse, the locus of a point in a plane whose sum of distances to two fixed points f1(1) and f2(2) is equal to the length of the long axis of the constant ellipse is an ellipse (and the focal length thereof is less than the length of the long axis of the ellipse). When in use, the second main rod 8 is sleeved on the top of the compass and the compass and the second main rod 8 are fixed by bolts and nuts. The two corners of the compass are fixed at the foci of the ellipse. The nut 20 is loosened to allow the first leg 11 to slide on the second leg 16 and the length of the leg is adjusted. After the leg length is adjusted to intersect with the paper surface, the nut 20 is tightened and the position of the first leg 11 and the second leg 16 are fixed by the nut 20 and the fixing bolt 15. The thin wire is pulled out from the wire drum 21, and after being wound around the two corners of the compass, the second leg 16 is placed at the top of the long axis or the short axis. The wire drum 21 is rotated to shrink the thin wire until the thin wire is in a triangular shape. The nut on the wire drum 21 is fixed to fix the length of the thin wire. The handheld terminal 2 is rotated to rotate the legs to complete the drawing of the ellipse. The focus and the major axis or the minor axis are known, and the arrangement is as above, and finally the second leg 16 is located at the top of the major axis or the minor axis to make an ellipse.
[0032] A connecting plate 5 is fixedly connected to one side of the first main rod 1, and a supporting leg is rotatably connected to the connecting plate 5. A through hole 12 is provided at the top of the first supporting leg 11, and a fixing rod 6 is provided to match the through hole 12. The fixing rod 6 passes through the through hole 12, and its two ends are fixed to the connecting plates 5 on both sides. A clip spring is sleeved on the fixing rod 6, and the clip spring abuts against the top of the first supporting leg 11 to press the top of the first supporting leg 11. The first supporting leg 11 rotates around the fixing rod 6 as the axis, and a clip spring is provided to facilitate angle fixing after the supporting leg is rotated.
[0033] A sliding end 14 is provided at the bottom of the first leg 11, and the width of the sliding end 14 is smaller than the width of the top of the first leg 11. A convex strip 13 and a fixing bolt 15 are provided at the bottom of the sliding end 14, and the fixing bolt 15 is located at the top of the convex strip 13, and the convex strip 13 and the sliding end 14 are in a vertical state.
[0034] The top of the second leg 16 is provided with a first slot 17 and a second slot 18, the first slot 17 and the second slot 18 are in a vertical state, the first slot 17 is adapted to the width of the sliding end 14, the sliding end 14 slides along the first slot 17, the second slot 18 is adapted to the convex strip 13, the convex strip 13 slides in the second slot 18, the sliding end 14, the convex strip 13 and the first slot 17 and the second slot 18 are arranged vertically, so that the first leg 11 can only move up and down on the second leg 16, and the first leg 11 and the second leg 16 are prevented from rotating. A nut 20 is provided to match the fixing bolt 15, and the nuts 20 are threadedly connected on both sides of the fixing bolt 15. The first leg 11 and the second leg 16 can be fixed by the nut 20 and the fixing bolt 15, thereby determining the length of the legs.
[0035] A wire drum 21 is fixed to one side of the second leg 16 by bolts and nuts 20. A thin wire is wound on the wire drum 21. The release and fixation of the thin wire on the wire drum 21 are controlled by twisting the nut 20. A protrusion 22 is provided on the same side of the second leg 16 and the wire drum 21. The protrusion 22 is located below the wire drum 21. A groove is provided in the middle of the protrusion 22 for smoothing the thin wire. The wire drum 21 is mainly used to reel in and release the wire, and is used to control the size of the intersection of the two foci of the ellipse at any point on the ellipse, and to change the degree of roundness of the ellipse. If the two foci are drawn on the x-axis, a y-axis is drawn between the two foci. The longer the wire, the more round the ellipse is on the x-axis, and the flatter it is on the y-axis. If the wire is shorter, the flatter the ellipse is on the x-axis, and the rounder the ellipse is on the y-axis.
[0036] A third slot 19 is provided at the bottom of the second leg 16, and the third slot 19 is used for placing a compass replacement core. In this embodiment, a 2.0 mm compass replacement core is used, and bolts and nuts 20 are provided at the third slot 19 to facilitate fixing the compass replacement core. In addition, the third slot 19 can also be used to provide a path for the thin wire on the wire reel 21 to fix the movement trajectory.
[0037] One end of the wire on the wire drum is fixed on the wire drum, and then passes through the groove at the top of the protrusion (22), passes through the third slot (19), winds around the compass to replace the core half a circle, and then winds back to the third slot (19), and finally winds up and fixes it to the groove in the middle of the protrusion (22) and is wound and fixed.
[0038] Working principle: determine the foci f1 and f2 of the ellipse, fix the two corners of the compass on the two foci respectively, and make the foci and the compass refill head at the bottom of the second leg 16 on the same straight line, adjust the winding length passing through the two corners of the compass and the pen tip to determine the major axis of the ellipse, and pass the thin wire from the wire reel 21 through the third slot 19 on the second leg 16, and then through the two corners of the compass, shrink the length of the thin wire until it is a straight line, hold the first main rod 1 with one hand, and hold the drawing with the other hand, and rotate the pen 360 degrees to draw the ellipse.
[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0040] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. An ellipsometer, characterized in that: include: A main rod, the main rod comprising a first main rod (1) and a second main rod (8), a spring (7) being arranged between the first main rod (1) and the second main rod (8), the first main rod (1) and the second main rod (8) being sleeved, and the second main rod (8) being connected to a compass; A leg, the leg being rotatably connected to the first main rod (1), the leg comprising a first leg (11) and a second leg (16), the first leg (11) and the second leg (16) being detachably mounted, and a compass refill being connected to the bottom of the second leg (16); A wire drum (21), wherein the wire drum (21) is fixedly connected to one side of the second supporting leg (16).
2. The ellipsometer according to claim 1, characterized in that: The first main rod (1) is provided with a clamping end (3) at the bottom, the clamping end (3) is provided with a clamping hook (4), and the clamping hook (4) is sleeved on the second main rod (8).
3. The ellipsometer according to claim 2, characterized in that: The interior of the clamping end (3) is a hollow structure, and a slide cylinder (9) is arranged at the top of the second main rod (8), and the slide cylinder (9) is slidably connected in the clamping end (3); a clamping ring (10) is also arranged on the second main rod (8), and the clamping ring (10) is located at the bottom of the slide cylinder (9). When the second main rod (8) is sleeved in the first main rod (1), the hook (4) is matched with the clamping ring (10).
4. The ellipsometer according to claim 3, characterized in that: One end of the spring (7) is connected to the inside of the clamping end (3), and the other end is connected to the inside of the slide cylinder (9).
5. The ellipsometer according to claim 4, characterized in that: The bottom of the second main rod (8) is a hollow structure, and when drawing an ellipse, the compass fits into the hollow structure.
6. The ellipsometer according to claim 1, characterized in that: A connecting plate (5) is fixedly connected to one side of the first main rod (1); a through hole (12) is opened at the top of the first leg (11); a fixing rod (6) is arranged to pass through the through hole (12); both ends of the fixing rod (6) are connected to the connecting plate (5); a clip spring is connected to the outer shell of the fixing rod (6); and the clip spring abuts against the top of the first leg (11).
7. The ellipsometer according to claim 1, characterized in that: A sliding end (14) is provided at the bottom of the first leg (11), a convex strip (13) and a fixing bolt (15) are fixedly connected to the bottom of the sliding end (14), the fixing bolt (15) is located at the top of the convex strip (13), and the convex strip (13) and the fixing bolt (15) are adapted in the second leg (16).
8. The ellipsometer according to claim 7, characterized in that: A first slot (17) and a second slot (18) are formed on the top of the second leg (16); the first slot (17) and the second slot (18) are vertically distributed; the first slot (17) is matched with the sliding end (14); the second slot (18) is matched with the convex strip (13); after the convex strip (13) is matched into the second slot (18), nuts (20) are threadedly connected on both sides of the fixing bolt (15).
9. The ellipsometer according to claim 8, characterized in that: A third slot (19) is provided at the bottom of the second leg (16), and the third slot (19) is used for placing a compass refill.
10. The ellipsometer according to claim 1, characterized in that: A protrusion (22) is provided on one side of the second leg (16), and the protrusion (22) is used to fix the thin wire in the wire drum (21).