Ellipsograph with adjustable long and short axes

Abstract

The application provides a long-short axis adjustable compasses, comprising: a shell, an upper connecting rod, an adjusting mechanism for adjusting a long axis size and a short axis size, and a lower connecting rod, the upper connecting rod is in transmission connection with the lower connecting rod through the adjusting mechanism.

Description

Technical Field

[0001] This invention relates to the field of stationery and drawing tools, and in particular to an elliptic compass with adjustable major and minor axes. Background Technology

[0002] Currently, most tools for drawing ellipses first determine the foci of the ellipse. Based on the definition of an ellipse (the set of all points in a plane whose distances to the two foci sum to a constant), a fixed-length string is used to constrain the geometric relationship between the pen and the foci, ensuring it meets the definition. The pen is then moved to draw an ellipse. Due to structural limitations, this method usually requires drawing two semi-ellipses separately, leading to drawing errors, and adjusting the length of the string is extremely inconvenient. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an ellipse gauge with adjustable major and minor axes, which addresses the shortcomings of the prior art.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an ellipse gauge with adjustable major and minor axes, comprising: a housing, an upper connecting rod, an adjustment mechanism for adjusting the major and minor axis dimensions, and a lower connecting rod, wherein the upper connecting rod is connected to the lower connecting rod through the adjustment mechanism.

[0005] The beneficial effect of adopting the technical solution of the present invention is that by adjusting the major axis and minor axis dimensions through the adjustment mechanism, the major and minor axes can be adjusted and ellipses can be drawn continuously.

[0006] Furthermore, the housing is provided with a cross-shaped sliding groove structure, and the adjusting mechanism is slidably disposed in the cross-shaped sliding groove structure, which is located between the upper connecting rod and the lower connecting rod.

[0007] The beneficial effect of adopting the above-mentioned further technical solution is that, in the cross-groove mechanism, the motion trajectory of any point on the connecting rod is an ellipse, and by changing the length of the connecting rod, an ellipse of any size can be drawn. By fixing the upper and lower connecting rods of the cross-groove located in the housing to move synchronously, the disadvantage of the large spatial difficulty in drawing an ellipse in the cross-groove is overcome.

[0008] Furthermore, the adjustment mechanism includes a main slider and a secondary slider, the main slider and the secondary slider being slidably mounted in two grooves of the cross-shaped slide structure, the upper connecting rod being hinged to the main slider and the secondary slider, and the lower connecting rod being hinged to the main slider and the secondary slider.

[0009] The advantage of adopting the above-mentioned further technical solution is that it makes it easier to adjust the main slider and the secondary slider to the distance required to draw the ellipse size.

[0010] Furthermore, both the main slider and the auxiliary slider are hinged with shift sliders, and the upper connecting rod is provided with a pair of first rectangular slots. The shift sliders on the main slider and the auxiliary slider are respectively slidably installed in the pair of first rectangular slots.

[0011] The beneficial effect of adopting the above-mentioned further technical solution is that, through mechanisms such as the shift slider, the range of ellipse sizes that can be drawn when drawing ellipses using the cross slide is increased.

[0012] Furthermore, the auxiliary slider is hinged to a lower connecting rod shift slider, the lower connecting rod is provided with a second rectangular groove, the lower connecting rod shift slider is slidably installed in the second rectangular groove, and the lower connecting rod shift slider is fixedly connected to a shift paddle.

[0013] The beneficial effect of adopting the above-mentioned further technical solution is that, through mechanisms such as the shift slider, the range of ellipse sizes that can be drawn when drawing ellipses using the cross slide is increased.

[0014] Furthermore, when the positions of the shift slider in the upper link and the shift slider in the lower link are fixed, the upper link and the lower link move synchronously as a single component.

[0015] The beneficial effect of adopting the above-mentioned further technical solution is that when the position of the shift slider in the upper link and the position of the shift slider in the lower link are fixed, the upper link and the lower link move synchronously as a component, thereby realizing the continuous drawing of ellipses.

[0016] Furthermore, a pressure plate is provided between the upper connecting rod and the cross slide structure, and the slider and the auxiliary slider are both located between the cross slide structure and the pressure plate.

[0017] The beneficial effect of adopting the above-mentioned further technical solution is that the pressure plate is used to fix the slider in the groove so that it does not fall out.

[0018] Furthermore, the lower connecting rod is provided with multiple mounting holes, in which a paintbrush is installed; the housing is provided with multiple positioning pins; a protective base is detachably installed on the housing, and the protective base is provided with multiple protective holes for accommodating the positioning pins.

[0019] The beneficial effects of adopting the above-mentioned further technical solution are that the pen is used to draw ellipses. Multiple mounting holes facilitate quick adjustment of the pen's position. It allows the lower connecting rod to drive the pen mounted on it to draw ellipses in a plane. In the cross-groove mechanism, the trajectory of any point on the connecting rod is an ellipse; by changing the length of the connecting rod and the position of the pen on the connecting rod, ellipses of any size can be drawn. It also facilitates the placement of multiple positioning pins on the lines containing the major and minor axes of the ellipse to be drawn.

[0020] Furthermore, a rotary end cover is rotatably mounted on the housing, and an operating knob is rotatably mounted on the rotary end cover. The rotary end cover is connected to the upper connecting rod via a transmission.

[0021] The beneficial effect of adopting the above-mentioned further technical solution is that it facilitates the movement of the rotating end cap by operating the knob. Ellipses can be drawn continuously with a single operation. The rotating end cap is hinged to the operating knob, and the structure of the rotating end cap increases the operability of the elliptic gauge and the stability of ellipse drawing.

[0022] Furthermore, the rotary end cover is rotatably mounted on the housing via a bearing, the bearing abutting against a retaining ring, the rotary end cover is provided with a waist-shaped groove, and a rolling element is rotatably mounted on the upper connecting rod, the rolling element being slidably mounted in the waist-shaped groove.

[0023] The beneficial effect of adopting the above-mentioned further technical solution is that there is a waist-shaped groove below the rotary end cover, and the rolling elements assembled on the upper connecting rod can slide in the waist-shaped groove, which facilitates the rotary end cover to drive the upper connecting rod to move. The rotary end cover structure increases the operability of the elliptic gauge and the stability of drawing ellipses.

[0024] The advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the structural schematic diagrams of an elliptic gauge with adjustable major and minor axes provided in an embodiment of the present invention.

[0027] Figure 2 This is the second schematic diagram of the structure of an elliptic gauge with adjustable major and minor axes provided in an embodiment of the present invention.

[0028] Figure 3 The third schematic diagram of the structure of the adjustable elliptic gauge provided in the embodiment of the present invention.

[0029] Figure 4 The fourth schematic diagram of the structure of the adjustable elliptic gauge provided in the embodiment of the present invention.

[0030] Figure 5 The fifth schematic diagram of the structure of the adjustable elliptic gauge provided in the embodiment of the present invention.

[0031] Figure 6 This is the sixth schematic diagram of the structure of an elliptic gauge with adjustable major and minor axes provided in an embodiment of the present invention.

[0032] Figure 7 The seventh schematic diagram of the structure of the elliptic gauge with adjustable major and minor axes provided in the embodiments of the present invention.

[0033] Figure 8 This is the eighth schematic diagram of the structure of an elliptic gauge with adjustable major and minor axes provided in an embodiment of the present invention.

[0034] Figure 9 The ninth schematic diagram of the structure of the adjustable elliptic gauge provided in the embodiment of the present invention.

[0035] Figure 10 This is the tenth schematic diagram of the structure of an elliptic gauge with adjustable major and minor axes provided in an embodiment of the present invention.

[0036] Explanation of the reference numerals: 1. Housing; 101. Cross-shaped slide structure; 2. Rotary end cover; 3. Operating knob; 4. Protective base; 5. Positioning pin; 6. Bearing; 7. Snap ring; 8. Upper connecting rod; 9. Shift slider; 10. Pressure plate; 11. Main slider; 12. Secondary slider; 13. Lower connecting rod; 14. Shift paddle; 15. Lower connecting rod shift slider; 16. Pen. Detailed Implementation

[0037] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0042] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0043] like Figures 1 to 10 As shown, an embodiment of the present invention provides an ellipse gauge with adjustable major and minor axes, including: a housing 1, an upper connecting rod 8, an adjustment mechanism for adjusting the major and minor axis dimensions, and a lower connecting rod 13. The upper connecting rod 8 is connected to the lower connecting rod 13 through the adjustment mechanism.

[0044] The beneficial effect of adopting the technical solution of the present invention is that by adjusting the major axis and minor axis dimensions through the adjustment mechanism, the major and minor axes can be adjusted and ellipses can be drawn continuously.

[0045] like Figures 1 to 10 As shown, the housing 1 is further provided with a cross-shaped sliding groove structure 101, and the adjustment mechanism is slidably disposed in the cross-shaped sliding groove structure 101. The cross-shaped sliding groove structure 101 is located between the upper connecting rod 8 and the lower connecting rod 13.

[0046] The beneficial effect of adopting the above-mentioned further technical solution is that, in the cross-groove mechanism, the motion trajectory of any point on the connecting rod is an ellipse, and by changing the length of the connecting rod, an ellipse of any size can be drawn. By fixing the upper and lower connecting rods of the cross-groove located in the housing to move synchronously, the disadvantage of the large spatial difficulty in drawing an ellipse in the cross-groove is overcome.

[0047] like Figures 1 to 10As shown, the adjustment mechanism further includes a main slider 11 and a secondary slider 12, which are slidably installed in two grooves of the cross-shaped slide structure 101, respectively. The upper connecting rod 8 is hinged to the main slider 11 and the secondary slider 12, and the lower connecting rod 13 is hinged to the main slider 11 and the secondary slider 12.

[0048] The advantage of adopting the above-mentioned further technical solution is that it makes it easier to adjust the main slider and the secondary slider to the distance required to draw the ellipse size.

[0049] like Figures 1 to 10 As shown, further, both the main slider 11 and the auxiliary slider 12 are hinged with shift sliders 9, and the upper connecting rod 8 is provided with a pair of first rectangular slots. The shift sliders 9 on the main slider 11 and the auxiliary slider 12 are respectively slidably installed in the pair of first rectangular slots.

[0050] The beneficial effect of adopting the above-mentioned further technical solution is that, through mechanisms such as the shift slider, the range of ellipse sizes that can be drawn when drawing ellipses using the cross slide is increased.

[0051] The shift slider 9 is slidably connected to the first rectangular groove via a slide rail.

[0052] like Figures 1 to 10 As shown, the auxiliary slider 12 is further hinged to the lower connecting rod shift slider 15, the lower connecting rod 13 is provided with a second rectangular groove, the lower connecting rod shift slider 15 is slidably installed in the second rectangular groove, and the lower connecting rod shift slider 15 is fixedly connected to the shift paddle 14.

[0053] The beneficial effect of adopting the above-mentioned further technical solution is that, through mechanisms such as the shift slider, the range of ellipse sizes that can be drawn when drawing ellipses using the cross slide is increased.

[0054] The lower connecting rod shift slider 15 is slidably connected to the second rectangular groove via a slide rail.

[0055] like Figures 1 to 10 As shown, further, when the position of the shift slider 9 in the upper link 8 and the position of the shift slider 15 in the lower link 13 are fixed, the upper link 8 and the lower link 13 move synchronously as a single component.

[0056] The beneficial effect of adopting the above-mentioned further technical solution is that when the position of the shift slider in the upper link and the position of the shift slider in the lower link are fixed, the upper link and the lower link move synchronously as a component, thereby realizing the continuous drawing of ellipses.

[0057] The positioning and fixing of the shift slider 9 in the upper connecting rod 8 and the shift slider 15 in the lower connecting rod 13 can be achieved through a combination of elastic steel balls and positioning holes. For example, the steel balls are slidably mounted on the slider by a spring, and positioning holes are provided in the rectangular groove.

[0058] like Figures 1 to 10 As shown, a pressure plate 10 is further provided between the upper connecting rod 8 and the cross slide structure 101, and the slider 11 and the auxiliary slider 12 are both located between the cross slide structure 101 and the pressure plate 10.

[0059] The beneficial effect of adopting the above-mentioned further technical solution is that the pressure plate is used to fix the slider in the groove so that it does not fall out.

[0060] like Figures 1 to 10 As shown, further, the lower connecting rod 13 is provided with a plurality of mounting holes, in which a paintbrush 16 is installed; the housing 1 is provided with a plurality of positioning pins 5; a protective base 4 is detachably installed on the housing 1, and the protective base 4 is provided with a plurality of protective holes for accommodating the positioning pins 5.

[0061] The beneficial effects of adopting the above-mentioned further technical solution are that the pen is used to draw ellipses. Multiple mounting holes facilitate quick adjustment of the pen's position. It allows the lower connecting rod to drive the pen mounted on it to draw ellipses in a plane. In the cross-groove mechanism, the trajectory of any point on the connecting rod is an ellipse; by changing the length of the connecting rod and the position of the pen on the connecting rod, ellipses of any size can be drawn. It also facilitates the placement of multiple positioning pins on the lines containing the major and minor axes of the ellipse to be drawn.

[0062] like Figures 1 to 10 As shown, a rotary end cover 2 is rotatably mounted on the housing 1, and an operating knob 3 is rotatably mounted on the rotary end cover 2. The rotary end cover 2 is connected to the upper connecting rod 8 in a transmission manner.

[0063] The beneficial effect of adopting the above-mentioned further technical solution is that it facilitates the movement of the rotating end cap by operating the knob. Ellipses can be drawn continuously with a single operation. The rotating end cap is hinged to the operating knob, and the structure of the rotating end cap increases the operability of the elliptic gauge and the stability of ellipse drawing.

[0064] like Figures 1 to 10 As shown, the rotary end cover 2 is rotatably mounted on the housing 1 via a bearing 6. The bearing 6 abuts against a retaining ring 7. The rotary end cover 2 is provided with a waist-shaped groove. A rolling element is rotatably mounted on the upper connecting rod 8. The rolling element is slidably mounted in the waist-shaped groove.

[0065] The beneficial effect of adopting the above-mentioned further technical solution is that there is a waist-shaped groove below the rotary end cover, and the rolling elements assembled on the upper connecting rod can slide in the waist-shaped groove, which facilitates the rotary end cover to drive the upper connecting rod to move. The rotary end cover structure increases the operability of the elliptic gauge and the stability of drawing ellipses.

[0066] This invention provides an ellipse gauge with adjustable major and minor axes, which can be a portable and accurate drawing tool for students. This ellipse gauge can set the major and minor axis dimensions of the ellipse within a certain size range, and can continuously draw ellipses through a single operation.

[0067] like Figures 1 to 10 As shown in the figure, an embodiment of the present invention provides an elliptic gauge with adjustable major and minor axes, comprising a housing 1, a cross-shaped slide groove structure 101 on the housing 1, two positioning pins 5 in the AA direction and two positioning pins 5 in the BB direction; comprising a main slider 11 and a secondary slider 12, which can slide along the two directions of the cross-shaped slide groove 101 respectively; comprising a pressure plate 10 for fixing the sliders (main slider 11 and secondary slider 12) in the slide groove (cross-shaped slide groove structure 101) to prevent them from falling out; comprising an upper connecting rod 8, which contains two first rectangular slots, each equipped with a shift slider 9, which can slide in the two first rectangular slots of the upper connecting rod 8, and the shift sliders 9 are respectively hinged to the main slider 11 and the secondary slider 12; and comprising a lower connecting rod 13, located below the housing 1 and hinged to the main slider 11. The lower connecting rod 13 has a second rectangular groove, in which the lower connecting rod shift slider 15 is installed. The lower connecting rod shift slider 15 can slide within the second rectangular groove. The lower connecting rod shift slider 15 is hinged to the auxiliary slider 12. When the position of the shift slider 9 in the upper connecting rod 8 and the position of the lower connecting rod shift slider 15 in the lower connecting rod 13 are fixed, the upper connecting rod 8 and the lower connecting rod 13 move synchronously as a single component. A pen 16 is mounted on the lower connecting rod 13. The system includes a rotating end cover 2, which is hinged to the housing 1 via a bearing 6. An operating knob 3 is mounted on the rotating end cover 2, and the rotating end cover 2 is hinged to the operating knob 3. There is an oblong groove below the rotating end cover 2, in which the rolling element mounted on the upper connecting rod 8 can slide. The system includes a shift paddle 14, which is located below the lower connecting rod 13 and is fixedly connected to the lower connecting rod shift slider 15. The system also includes a protective base 4.

[0068] Principle: In the cross-groove mechanism, the trajectory of any point on the connecting rod is an ellipse. By changing the length of the connecting rod and the position of the pen 16 on the connecting rod, an ellipse of any size can be drawn.

[0069] Usage procedure: 1. Remove the protective base 4; 2. Move the shift lever 14 to adjust the distance between the main slider 11 and the secondary slider 12 to the required distance for drawing the ellipse; 3. Place the two positioning pins 5 in the AA direction on the line where the major axis of the ellipse to be drawn is located, and place the two positioning pins 5 in the BB direction on the line where the minor axis of the ellipse to be drawn is located; 4. Gently hold the housing 1 with one hand and hold the operation knob 3 with the other hand to rotate the end cover 2. This will drive the upper connecting rod 8 and the lower connecting rod 13 to move through the waist-shaped groove on the end cover 2. The lower connecting rod 13 will drive the pen 16 mounted on it to draw an ellipse in the plane.

[0070] This invention overcomes the spatial difficulty of drawing ellipses using a cross-shaped groove by fixing and synchronously moving two connecting rods on the upper and lower parts of the cross-shaped groove located in the housing 1. It uses four-point positioning to accurately draw ellipses. Through mechanisms such as the shifting slider, the range of ellipse sizes that can be drawn using the cross-shaped groove is increased. The rotating end cap 2 structure increases the operability of the ellipse gauge and the stability of the drawn ellipse. The overall structural design is convenient for storage and carrying.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ellipse gauge with adjustable major and minor axes, characterized in that, include: The housing (1), the upper connecting rod (8), the adjustment mechanism for adjusting the long axis and the short axis, and the lower connecting rod (13) are connected by the adjustment mechanism.

2. An ellipse gauge with adjustable major and minor axes according to claim 1, characterized in that, The housing (1) is provided with a cross slide groove structure (101), and the adjustment mechanism is slidably disposed in the cross slide groove structure (101). The cross slide groove structure (101) is located between the upper connecting rod (8) and the lower connecting rod (13).

3. An ellipse gauge with adjustable major and minor axes according to claim 2, characterized in that, The adjustment mechanism includes a main slider (11) and a secondary slider (12). The main slider (11) and the secondary slider (12) are slidably installed in two grooves of the cross-shaped slide structure (101). The upper connecting rod (8) is hinged to the main slider (11) and the secondary slider (12) respectively, and the lower connecting rod (13) is hinged to the main slider (11) and the secondary slider (12) respectively.

4. An ellipse gauge with adjustable major and minor axes according to claim 3, characterized in that, Both the main slider (11) and the auxiliary slider (12) are hinged with shift sliders (9). The upper connecting rod (8) is provided with a pair of first rectangular slots. The shift sliders (9) on the main slider (11) and the shift sliders (9) on the auxiliary slider (12) are respectively slidably installed in the pair of first rectangular slots.

5. An ellipse gauge with adjustable major and minor axes according to claim 4, characterized in that, The auxiliary slider (12) is hinged to the lower connecting rod shift slider (15). The lower connecting rod (13) is provided with a second rectangular groove. The lower connecting rod shift slider (15) is slidably installed in the second rectangular groove. The lower connecting rod shift slider (15) is fixedly connected to the shift paddle (14).

6. An ellipse gauge with adjustable major and minor axes according to claim 5, characterized in that, When the position of the shift slider (9) in the upper link (8) and the position of the shift slider (15) in the lower link (13) are fixed, the upper link (8) and the lower link (13) move synchronously as a single component.

7. An ellipse gauge with adjustable major and minor axes according to claim 3, characterized in that, A pressure plate (10) is provided between the upper connecting rod (8) and the cross slide structure (101), and the slider (11) and the auxiliary slider (12) are both located between the cross slide structure (101) and the pressure plate (10).

8. An ellipse gauge with adjustable major and minor axes according to claim 1, characterized in that, The lower connecting rod (13) is provided with multiple mounting holes, in which a paintbrush (16) is installed; the housing (1) is provided with multiple positioning pins (5); the housing (1) is detachably mounted with a protective base (4), which is provided with multiple protective holes for accommodating the positioning pins (5).

9. An ellipse gauge with adjustable major and minor axes according to claim 1, characterized in that, A rotary end cover (2) is rotatably mounted on the housing (1), and an operating knob (3) is rotatably mounted on the rotary end cover (2). The rotary end cover (2) is connected to the upper connecting rod (8) in a transmission manner.

10. An ellipse gauge with adjustable major and minor axes according to claim 9, characterized in that, The rotary end cap (2) is rotatably mounted on the housing (1) via a bearing (6). The bearing (6) abuts against a retaining ring (7). The rotary end cap (2) is provided with a waist-shaped groove. A rolling element is rotatably mounted on the upper connecting rod (8). The rolling element is slidably mounted in the waist-shaped groove.

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