CN211455017U - Hyperbola definition demonstration and curve drawing instrument - Google Patents

Abstract

The utility model discloses a hyperbola definition demonstration and curve drawing appearance provides one kind and can directly draw the moving trajectory of moving point into the image through the inherent law of demonstration process visual expression hyperbola and each parameter relation, can draw on having planar raw and other materials or the fixed plane, can regard as the instrument to use widely for a long time, including chassis, slider frame roof beam, backing plate, first registration arm, second registration arm, first straight toothed bar, second straight toothed bar, drive arrangement, painting brush, area chi, this device has: simple operation, as long as the rocking handle just can accomplish all demonstrations, curve drawing etc. multiple functional: can finish the demonstration of any parameter hyperbola and the drawing of the track curve; the drawing accuracy is high, the structure is compact, the cost is low, and the carrying is convenient; the applicability is strong: the device can be used for demonstrating and drawing at any angle in various occasions, and is suitable for teaching, engineering design, fixed place processing and the like.

Description

Hyperbola definition demonstration and curve drawing instrument

Technical Field

The utility model relates to a teaching instrument, especially a hyperbola definition demonstration and curve drawing appearance.

Background

The hyperbola is the most common curve for people, the composition and characteristics of which are the content that middle school students must master, and the hyperbola is widely applied in practice, such as engineering design, machining, garment cutting and the like. The characteristics of the traditional hyperbolic drawing ruler are gradually researched from definition during study of middle school students, the traditional hyperbolic drawing ruler is usually drawn by a teacher in free hands or is connected with a drawing pen through a zipper on a blackboard or a wall map, a rough hyperbolic curve is drawn, the students cannot feel the inherent relation of the hyperbolic curve and the function of each parameter, the selection of the parameter, the quick and accurate drawing, the automation degree, the use occasion and the like of the traditional hyperbolic drawing ruler are limited, and the traditional hyperbolic drawing ruler is not provided with a plurality of tools suitable for quickly and accurately demonstrating and drawing the hyperbolic curve in a classroom. The teaching effect is affected. Engineering designers draw drawings, fix position processing and the like all need fast and convenient drawing tools to improve efficiency and precision.

In order to solve the above problems, a few devices regarding the involute aspect have appeared in the near stage, for example, a "demonstration board for conical curve definition" is given in the document with patent application number 201820149220.4, in which two axes are fixed on one surface of a drawing board to form two fixed points, a drawing pen is connected with a drawing rope, and the drawing rope is sleeved on the two axes; when the ellipse definition is demonstrated, the drawing rope is a non-telescopic closed type thin rope, and the length of the closed type thin rope is larger than the distance between the two shafts; the technical importance is to finish drawing by rolling between the rope and the painting brush, the positioning system is incomplete, the ellipse parameters are not well and quickly determined, only simple ellipses can be demonstrated, the method cannot be used for the aspects of accurate drawing, machining and the like, and the applicability is not enough. The document with patent application number 201710379698.6 provides a combined involute and ellipse plotter, which comprises a gear box, a vertical support, an involute plotting device and an ellipse plotting device. The curve plotter can only draw two curves with fixed parameters, but cannot draw an ellipse with any parameters. The patent application No. 201610230017.5 discloses an integrated plotter, which comprises two bases, a first polished rod shaft and a second polished rod shaft, wherein the first polished rod shaft and the second polished rod shaft are connected with the two bases, one end of the second polished rod shaft is hinged with the first polished rod shaft through a sliding block, an M rod and an N rod below a sliding groove are hinged through shaft sleeves, and one end of the N rod is provided with a chalk supporting frame. The curve plotter can only be used for classroom teaching, and has insufficient technical precision in engineering technology and industrial and agricultural production.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:

appearance is drawn to hyperbola definition demonstration and curve, including chassis, slider frame roof beam, backing plate, first registration arm, second registration arm, first straight-tooth pole, second straight-tooth pole, drive arrangement, painting brush and tape measure, the middle part on chassis is arranged in to the backing plate, slider frame roof beam is arranged in on the chassis, slider frame roof beam left part is arranged in to first registration arm, slider frame roof beam right part is arranged in to the second registration arm, first straight-tooth pole is arranged in on the first registration arm, second straight-tooth pole is arranged in on the second registration arm, drive arrangement is in the same place with first straight-tooth pole and the meshing of second straight-tooth pole, the drive arrangement lower part is arranged in to the painting brush, the tape measure is connected first registration arm and drive arrangement, second registration arm and drive arrangement respectively.

In a further technical scheme, the first straight toothed bar comprises a first rectangular bar, a first screw slide block, a second screw slide block and a first rack, a first chute is arranged in the middle of the upper surface of the first rectangular bar, the first screw slide block is arranged in the first chute, the first screw slide block comprises a sixth slide block, a second screw, an eleventh ring disc and a third nut, the sixth slide block is provided with a spiral pin, the surface of the sixth slide block is provided with the second screw, the middle of the second screw is provided with the fixed eleventh ring disc, the upper part of the second screw is provided with the third nut, the front end of the surface of the first rectangular bar is provided with a fourth scale, the front side surface of the first rectangular bar is provided with the first rack, the middle of the bottom surface of the first rectangular bar is provided with the second chute, the second slide block is arranged in the second chute, the second chute and the second slide block are respectively the same as the first chute and the first screw slide block, and a second rectangular rod is arranged on the right side surface of the first rectangular rod.

Compared with the prior art, the utility model, its beneficial effect is:

1. the utility model discloses a demonstration and curve drawing instrument are defined to the hyperbola, easy operation as long as the handle that sways just can accomplish all demonstrations, curve drawing etc..

2. The utility model discloses a hyperbola definition demonstration and curve drawing instrument, it is multiple functional: can finish the demonstration of any parameter hyperbola and the drawing of the track curve; the drawing accuracy is high, the structure is compact, the cost is low, and the carrying is convenient; the applicability is strong: can be demonstrated and drawn at any angle in various occasions. The method is suitable for teaching, engineering design, fixed place processing and the like.

3. At present, no such product is available on the market, and the hyperbola definition demonstration and curve drawing instrument is compact in structure, low in cost, safe, reliable and light.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the middle chassis of the present invention.

Fig. 3 is a schematic structural view of the middle slider frame beam of the present invention.

Fig. 4 is a schematic structural diagram of the middle cushion plate of the present invention.

Fig. 5 is a schematic structural view of the first positioning tube of the present invention.

Fig. 6 is a schematic structural view of the second positioning tube of the present invention.

Fig. 7 is a schematic structural view of the first straight toothed bar of the present invention.

Fig. 8 is a schematic structural view of a second straight rack bar in the present invention.

Fig. 9 is a schematic structural diagram of the driving device of the present invention.

Fig. 10 is a schematic diagram of a structure of a painting brush in the present invention.

Fig. 11 is a schematic structural view of the tape measure of the present invention.

In the drawings: 1-a chassis, 11-a first rectangular plate, 12-an adjusting support leg, 13-a rectangular pipe frame, 14-a first screw, 15-a first nut, 16-a terrace with edge base, 17-a spherical sucker, 18-a second nut, 19-a second rectangular plate, 110-a third rectangular plate, and 111-a first groove; 2-a slide block frame beam, 21-a fourth rectangular plate, 22-a fifth rectangular plate, 23-a sixth rectangular plate, 24-a first slide block, 25-a second slide block, 26-a third slide block, 27-a fourth slide block, 28-a fifth slide block, 29-a second groove, 210-a third groove, 211-a fourth groove, 212-a first scale, 213-a first indicator light, 214-a second indicator light and 215-a third indicator light; 3-backing plate, 31-seventh rectangular plate, 32-first clamp and 33-coordinate system; 4-a first positioning pipe, 41-an eighth rectangular plate, 42-a first circular pipe, 43-a first circular ring disc, 44-a second circular ring disc, 45-a third circular ring disc, 46-a fourth circular ring disc, 47-a fifth circular ring disc, 48-a second circular pipe, 49-a third circular pipe, 410-a fourth circular pipe, 411-a first spring, 412-a first rectangular hole, 413-a first pressing strip, 414-a second scale, 415-a first pin, 416-a first position fixing plate and 418-a first rotating wheel sleeve; 5-a second positioning tube, 51-a ninth rectangular plate, 52-a fifth circular tube, 53-a sixth circular ring disc, 54-a seventh circular ring disc, 55-a sixth circular tube, 56-an eighth circular ring disc, 57-a ninth circular ring disc, 58-a seventh circular tube, 59-a tenth circular ring disc, 510-an eighth circular tube, 511-a second spring, 512-a second rectangular hole, 513-a second pressing strip, 514-a third scale, 515-a second pin, 516-a second fixing plate, 517-a second notch and 518-a second rotating wheel sleeve; 6-a first straight toothed bar, 61-a first rectangular bar, 62-a first screw slide block, 63-a second screw slide block, 64-a first rack, 65-a first chute, 66-a second chute, 67-a second rectangular bar, 68-a sixth slide block, 69-a second screw, 610-an eleventh circular disc, 611-a third nut, and 612-a fourth scale; 71-a third rectangular rod, 72-a third screw rod sliding block, 73-a fourth screw rod sliding block, 74-a second rack, 75-a third sliding groove, 76-a fourth sliding groove, 77-a fourth rectangular rod, 78-a seventh sliding block, 79-a third screw rod, 710-a twelfth circular disc, 711-a fourth nut, 712-a fifth scale, 713-a ninth circular tube and 714-a ball; 8-driving device, 81-ninth circular ring, 82-first gear, 83-second gear, 84-first circular ring pulling plate, 85-second circular ring pulling plate, 86-third circular ring pulling plate, 87-fourth circular ring pulling plate, 88-tenth circular ring, 89-thirteenth circular ring disk, 810-fourteenth circular ring disk, 811-fifteenth circular ring disk, 812-sixteenth circular ring disk, 813-seventeenth circular ring disk, 814-eighteenth circular ring disk, 815-right-angle crank, 816-third pin, 817-fourth indicator light, 818-third pressing strip, 819-fourth pressing strip, 841-nineteenth circular ring disk, 842-tenth rectangular plate, 843-fifth groove; the painting brush, 91-eleventh round tube, 92-twentieth circular ring plate, 93-third spring, 94-round pen holder, 95-twenty-first circular ring plate, 96-conical pen point and 97-fourth pin; 10-tape rule, 101-soft tape, 102-sixth scale, 103-tape rule head end, 104-tape rule tail end and 105-rule head baffle;

Detailed Description

The technical solution of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-11, the hyperbola definition demonstration and curve drawing instrument comprises a chassis 1, a slider frame beam 2, a backing plate 3, a first positioning tube 4, a second positioning tube 5, a first straight toothed bar 6, a second straight toothed bar, a driving device 8, a painting brush 9 and a tape ruler 10, the backing plate 3 is arranged in the middle of the chassis 1, the sliding block frame beam 2 is arranged on the chassis 1, the first positioning pipe 4 is arranged at the left part of the sliding block frame beam 2, the second positioning tube 5 is arranged at the right part of the slide block frame beam 2, the first straight toothed bar 6 is arranged on the first positioning tube 4, the second straight toothed bar is arranged on the second positioning pipe 5, the driving device 8 is meshed with the first straight toothed bar 6 and the second straight toothed bar together, the painting brush 9 is arranged at the lower part of the driving device 8, and the tape ruler 10 is respectively used for connecting the first positioning tube 4 with the driving device 8 and connecting the second positioning tube 5 with the driving device 8.

As shown in fig. 1 and 2, the chassis 1 includes a first rectangular plate 11, adjusting support legs 12, a rectangular tube frame 13, a second rectangular plate 19 and a third rectangular plate 110, the first rectangular plate 11 is a straight hard plate, the adjusting support legs 12 are arranged on the bottom surface of the first rectangular plate 11, the adjusting support legs 12 include a first screw rod 14, a terrace with edges base 16 and a spherical suction cup 17, the first screw rod 14 is sequentially provided with a second nut 18, a spherical suction cup 17, a first nut 15 and a terrace with edges base 16 from top to bottom, and the adjusting support legs 12 are respectively located at four corners of the bottom surface of the first rectangular plate 11. Four sides of first rectangular plate 11 are equipped with rectangle pipe frame 13, rectangle pipe frame 13 is that the cross section is the frame of rectangle, first rectangular plate 11 middle part is equipped with first slot 111, first rectangular plate 11 left surface is equipped with second rectangular plate 19, and right flank middle part is equipped with third rectangular plate 110.

As shown in fig. 1, 2 and 3, the slider frame 2 includes a fourth rectangular plate 21, a fifth rectangular plate 22, a sixth rectangular plate 23, a first slider 24, a second slider 25, a third slider 26, a fourth slider 27 and a fifth slider 28, the fourth rectangular plate 21 is a straight transparent hard plate strip, a second groove 29 is formed in the middle of the fourth rectangular plate 21, the second groove 29 is a rectangular groove hole, the third groove 29 is provided with the third slider 26, the fourth slider 27 and the fifth slider 28 in sequence from left to right, a first indicator light 213 is provided on the surface of the third slider 26, a second indicator light 214 is provided on the surface of the fourth slider 27, a third indicator light 215 is provided on the surface of the fifth slider 28, and the first indicator light 213, the second indicator light 214 and the third indicator light 215 are all round lamps with downward light spots. The rear end of the surface of the fourth rectangular plate 21 is provided with a first scale 212, the left end of the lower bottom surface of the fourth rectangular plate 21 is provided with a vertical fifth rectangular plate 22, the middle part of the fifth rectangular plate 22 is provided with a third groove 210, and the third groove 210 is internally provided with a first sliding block 24. The right end of the lower bottom surface of the fourth rectangular plate 21 is provided with a vertical sixth rectangular plate 23, the middle of the sixth rectangular plate 23 is provided with a fourth groove 211, and a second sliding block 25 is arranged in the fourth groove 211.

The slider frame beam 2 is formed by sequentially fixing a fifth rectangular plate 22 and a sixth rectangular plate 23 on a second rectangular plate 19 and a third rectangular plate 110 of the chassis 1.

As shown in fig. 1, 2 and 4, the backing plate 3 includes a seventh rectangular plate 31 and a first clamp 32, the seventh rectangular plate 31 is a hard straight thick plate, a coordinate system 33 is provided in the middle of the surface of the seventh rectangular plate 31, and the first clamp 32 is provided at the four corners of the seventh rectangular plate 31.

The backing plate 3 is formed by placing a seventh rectangular plate 31 on the first rectangular plate 11 of the chassis 1.

As shown in fig. 1, 4 and 5, the first positioning tube 4 comprises an eighth rectangular plate 41, a first circular tube 42, a first circular disc 43, a second circular disc 44, a third circular disc 45, a fourth circular disc 46 and a first rotating sleeve 418, the first circular pipe 42 is provided with a fourth circular ring disk 46, a fourth circular pipe 410, a third circular ring disk 45, an eighth rectangular plate 41, a second circular ring disk 44, a third circular pipe 49, a second circular pipe 48 and a first circular ring disk 43 from top to bottom in sequence, the eighth rectangular plate 41 is a rigid straight plate, the inner circumferences of the first circular disk 43 and the second circular disk 44 are fixed to the first circular tube 42, the second circular ring disk 44 is a transparent hard plate, a first pin 415 is arranged on the surface of the second circular ring disk 44, the outer arc surface of the first circular ring disc 43 is provided with a first retaining plate 416, the first retaining plate 416 is a transparent arc plate, and the first retaining plate 416 is provided with a first opening 417. A first rotating wheel sleeve 418 is arranged between the first circular ring disc 43 and the second circular ring disc 44, a first pressing strip 413 is arranged outside the second circular tube 48, a fifth circular ring disc 47 is arranged at the upper end of the second circular tube 48, the inner circumference of the fifth circular ring disc 47 is fixed on the second circular tube 48, a fixed third circular tube 49 is arranged on the outer circumference of the fifth circular ring disc 47, a first spring 411 is arranged in the third circular tube 49, the first spring 411 is a spiral spring formed by winding elastic reeds, the inner end of the first spring 411 is fixed on the first circular tube 42, and the outer end of the first spring 411 is fixed on the inner wall of the third circular tube 49. The first rotating sleeve 418 can rotate around the first circular tube 42 by rotating counterclockwise, and the first rotating sleeve 418 can automatically rotate after stopping rotating. The first circular tube 42 outside of eighth rectangular plate 41 top divides down to go up to be equipped with third ring dish 45 and fourth ring dish 46 in proper order, the interior circumference of third ring dish 45 and fourth ring dish 46 is fixed on first circular tube 42, be equipped with fourth circular tube 410 between third ring dish 45 and fourth ring dish 46, fourth circular tube 410 cover can free rotation on first circular tube 42, be equipped with first rectangular hole 412 on the fourth circular tube 410. The eighth rectangular plate 41 has a second scale 414 thereon.

The first positioning tube 4 is formed by inserting the eighth rectangular plate 41 into the rectangular notch of the first slider 24 of the slider frame 2.

As shown in fig. 1, 4 and 6, the second positioning tube 5 includes a ninth rectangular plate 51, a fifth circular tube 52, a sixth circular ring disc 53, a seventh circular ring disc 54, a sixth circular tube 55, an eighth circular ring disc 56, a ninth circular ring disc 57 and a second rotating sleeve 518, the fifth circular pipe 52 is sequentially provided with a ninth circular ring disc 57, a second rotating wheel sleeve 518, a tenth circular ring disc 59, a seventh circular pipe 58, an eighth circular ring disc 56, a ninth rectangular plate 51, a seventh circular ring disc 54, a sixth circular pipe 55 and a sixth circular ring disc 53 from top to bottom, the ninth rectangular plate 51 is a hard straight plate, the inner circumferences of the sixth circular ring plate 53 and the seventh circular ring plate 54 are fixed to the fifth circular tube 52, a sixth circular pipe 55 is arranged between the sixth circular ring disc 53 and the seventh circular ring disc 54, the sixth circular pipe 55 is sleeved on the fifth circular pipe 52 and can freely rotate, and a second rectangular hole 512 is arranged on the circumferential surface of the sixth circular pipe 55. The inner circumferences of the eighth annular disc 56 and the ninth annular disc 57 are fixed on the fifth circular tube 52, the ninth annular disc 57 is a transparent hard plate, a second pin 515 is arranged on the surface of the ninth annular disc 57, a second retaining plate 516 is arranged on the outer circular arc of the eighth annular disc 56, the second retaining plate 516 is a transparent circular arc plate, and a second opening 517 is arranged on the second retaining plate 516. A second rotating wheel sleeve 518 is arranged between the eighth circular ring disc 56 and the ninth circular ring disc 57. The second rotating sleeve 518 has the same structural function as the first rotating sleeve 418, the seventh circular tube 58 is sleeved on the fifth circular tube 52 by the second rotating sleeve 518, and the inner end of the second spring 511 is fixed on the fifth circular tube 52. The ninth rectangular plate 51 is provided with a third scale 514 thereon.

The second positioning tube 5 is formed by inserting the ninth rectangular plate 51 into the rectangular notch of the second slider 25 of the slider frame 2.

As shown in fig. 1, 5 and 7, the first straight toothed bar 6 includes a first rectangular bar 61, a first screw block 62, a second screw block 63 and a first rack 64, the first rectangular bar 61 is a straight hard bar, a first sliding slot 65 is provided in the middle of the upper surface of the first rectangular bar 61, the cross section of the first sliding slot 65 is "inverted" shaped, the first screw block 62 is provided in the first sliding slot 65, the first screw block 62 includes a sixth block 68, a second screw 69, an eleventh circular disc 610 and a third nut 611, the sixth block 68 has a screw pin, the surface of the sixth block 68 has the second screw 69, the middle of the second screw 69 has the fixed eleventh circular disc 610, and the upper portion of the second screw 69 has the third nut 611. The front end of the surface of the first rectangular rod 61 is provided with a fourth scale 612, the front side surface of the first rectangular rod 61 is provided with a first rack 64, and the first rack 64 is a straight rack. The middle of the bottom surface of the first rectangular rod 61 is provided with a second sliding chute 66, a second screw slide block 63 is arranged in the second sliding chute 66, and the second sliding chute 66 and the second screw slide block 63 are respectively the same as the first sliding chute 65 and the first screw slide block 62. A second rectangular bar 67 is provided on the right side surface of the first rectangular bar 61.

The first straight toothed bar 6 is a first rectangular hole 412 for fixing the second rectangular bar 67 to the first positioning pipe 4, and the fourth scale 612 is located above.

As shown in fig. 1, 6 and 8, the second straight-tooth rod includes a third rectangular rod 71, a third screw slider 72, a fourth screw slider 73, a second rack 74 and a ninth circular tube 713, the third rectangular rod 71 is the same as the first rectangular rod 61, a third sliding slot 75 is formed in the middle of the upper surface of the third rectangular rod 71, the third sliding slot 75 is provided with the third screw slider 72, the third screw slider 72 includes a seventh slider 78, a third screw 79, a twelfth circular disc 710 and a fourth nut 711, and the structure of the third straight-tooth rod is the same as that of the first screw slider 62. The front end of the surface of the third rectangular rod 71 is provided with a fifth scale 712, the front side surface of the third rectangular rod 71 is provided with a second rack 74, the second rack 74 is identical to the first rack 64, the middle part of the lower surface of the third rectangular rod 71 is provided with a fourth sliding chute 76, a fourth screw slider 73 is arranged in the fourth sliding chute 76, the fourth sliding chute 76 and the fourth screw slider 73 are respectively identical to the first sliding chute 65 and the first screw slider 62, the left end of the bottom surface of the third rectangular rod 71 is provided with a ninth circular tube 713, and a ball 714 is arranged in the lower port of the ninth circular tube 713. A fourth rectangular bar 77 is provided on the right side surface of the third rectangular bar 71.

The second straight rack bar fixes the fourth rectangular bar 77 in the second rectangular hole 512 of the second positioning tube 5, and the ball 714 is below.

As shown in fig. 1, 7, 8, and 9, the driving device 8 includes a ninth circular tube 81, a first gear 82, a second gear 83, a first circular ring pulling plate 84, a second circular ring pulling plate 85, a third circular ring pulling plate 86, a fourth circular ring pulling plate 87, and a tenth circular tube 88, the ninth circular tube 81 is a rigid circular tube shaft, a fourth indicator light 817 is disposed on a top surface of the ninth circular tube 81, the fourth indicator light 817 is the same as the second indicator light 214, the ninth circular tube 81 is sequentially provided with a right-angle crank 815, a thirteenth circular ring plate 89, the first circular ring pulling plate 84, the first gear 82, the second circular ring pulling plate 85, a fourteenth circular ring plate 810, a fifteenth circular ring plate 811, a tenth circular tube 88, a sixteenth circular ring plate 812, a seventeenth circular ring plate 813, a third circular ring pulling plate 86, the second gear 83, a fourth circular ring pulling plate 87, an eighteenth circular ring plate 814, and a third circular ring plate 816 from top to bottom, and the thirteenth circular ring plate 89 is provided with a third circular ring plate 89, The inner circumferences of the first gear 82 and the fourteenth circular disk 810 are fixed on the circumferential surface of the ninth circular tube 81, the first circular ring pulling plate 84 comprises a nineteenth circular ring disk 841 and a tenth rectangular plate 842, the outer circumference of the nineteenth circular ring disk 841 is provided with a tenth rectangular plate 842, the tenth rectangular plate 842 is a hard thin plate, the tenth rectangular plate 842 is provided with a fifth groove 843, the first circular ring pulling plate 84 is formed by sleeving the inner circumference of the nineteenth circular ring disk 841 on the ninth circular tube 81 and can freely rotate between the thirteenth circular ring disk 89 and the first gear 82, the second circular ring pulling plate 85 is completely identical to the first circular ring pulling plate 84 and is sleeved on the ninth circular tube 81 and can freely rotate between the fourteenth circular ring disk 810 and the first gear 82, the inner circumferences of the fifteenth circular ring disk 811 and the sixteenth circular ring disk 812 are fixed on the ninth circular tube 81, the tenth circular tube 88 is sleeved on the ninth circular tube 81 and can freely rotate, the circumferential surface of the tenth circular tube 88 is provided with a third pressing strip 818 and a fourth pressing strip 819, the second gear 83 is the same as the first gear 82, the third circular ring pulling plate 86 and the fourth circular ring pulling plate 87 are completely the same as the first circular ring pulling plate 84, and the seventeenth circular ring plate 813, the third circular ring pulling plate 86, the second gear 83, the fourth circular ring pulling plate 87 and the eighteenth circular ring plate 814 are arranged on the ninth circular tube 81 in the same manner as the thirteenth circular ring plate 89, the first circular ring pulling plate 84, the first gear 82, the second circular ring pulling plate 85 and the fourteenth circular ring plate 810 in sequence. The lower end of the circumferential surface of the ninth round tube 81 is provided with a third pin 816.

In the driving device 8, the fifth groove 843 of the first ring pulling plate 84 is sleeved on the second screw 69 of the first straight-tooth bar 6 and fixed by a third nut 611, the second ring pulling plate 85 is fixed on the second screw sliding block 63, the third ring pulling plate 86 and the fourth ring pulling plate 87 are sequentially and respectively fixed on the third screw sliding block 72 and the fourth screw sliding block 73 of the second straight-tooth bar, the first gear 82 can be meshed with the first rack 64, and the second gear 83 can be meshed with the second rack 74.

As shown in fig. 1, 9 and 10, the paintbrush 9 includes an eleventh circular tube 91, a twentieth circular disc 92, a third spring 93, a circular pencil rod 94, a twentieth circular disc 95, a conical pencil tip 96 and a fourth pin 97, a third pin 97 is arranged at the lower end of the circumferential surface of the eleventh round pipe 91, a twentieth round ring plate 92 is arranged at the lower end of the eleventh round pipe 91, the inner circumference of the twentieth circular ring disc 92 is fixed on the eleventh circular tube 91, the bottom surface of the eleventh circular ring disc 92 is provided with a spiral third spring 93, a twenty-first ring disc 95 is fixed at the end of the third spring 93, the twenty-first ring disc 95 is a transparent hard plate, a fixed circular pen rod 94 is arranged in an inner circular hole of the twenty-first circular disc 95, the upper end of the circular pen rod 94 penetrates through a third spring 93 and is inserted into the eleventh circular tube 91, and a conical pen point 96 is arranged at the lower end of the circular pen rod 94.

In the painting brush 9, the upper end of an eleventh round tube 91 is sleeved outside a lower end tube opening of a tenth round tube 81 of the driving device 8, a round pen rod 94 is inserted into the tenth round tube 81 and fixed by a third pin 816, the round pen rod 94 is positioned at the center of the tenth round tube 81, is parallel to the inner tube wall of the tenth round tube 81, and keeps the same distance therebetween.

As shown in fig. 1, 5, 6, and 11, the tape 10 includes a soft tape 101, a sixth scale 102, and a tape head baffle 105, the soft tape 101 is a narrow tape with the same color inelastic thickness, the sixth scale 102 is disposed on the side surface of the soft tape 101, the sixth scale 102 is disposed on two side surfaces of the soft tape 101 and has the same scale position, a zero scale end where the sixth scale 102 is located is set as a tape head end 103, an end of the sixth scale 102 is set as a tape tail end 104, and the tape head end 103 is provided with the tape head baffle 105.

The utility model discloses a hyperbola definition demonstration and curve drawing appearance's theory of operation is, rotates two spur rack reverse displacement on it according to the circular gear, utilizes the equidistance tangential motion between two spur racks and circular gear, and the movement track of circular gear is exactly the hyperbola when spur rack one end is fixed. The method is characterized in that: the operation is simple, and all functions can be completed by only shaking the handle under the initial condition. The functions are complete: the demonstration and the track drawing of the ellipse with any parameter can be completed; the curve drawing accuracy is high, the structure is compact, the cost is low, and the carrying is convenient; the applicability is strong: can be demonstrated and drawn at any angle in various occasions. The method is suitable for teaching, carving, engineering design, machining and the like.

The utility model discloses a hyperbola definition demonstration and curve drawing instrument has the function of demonstration hyperbola definition, and the operating procedure is:

firstly, assembling instruments, 1] placing a terrace base 16 of a chassis 1 on four fixed points, and screwing a first nut 15 to enable a first rectangular plate 11 to be in a stable state. 2] a pallet 3 is placed on the chassis 1. And 3, placing the slider frame beam 2 on the chassis 1. And 4, respectively fixing a first positioning pipe 4 and a second positioning pipe 5 on the slider frame beam 2. 5] the first straight toothed bar 6 is placed on the first positioning tube 4. And 6, placing a second straight toothed bar on the second positioning tube 5. 7] drive means 8 are associated with the first 6 and second spur bars, respectively. And 8, taking two strip rules 10, placing the first strip rule 10 on the first positioning pipe 4 to form a first circle of rule, and placing the second strip rule 10 on the second positioning pipe 5 to form a second circle of rule. 9] brush 9 is placed on drive 8 and held in place by fourth pin 97.

Setting symbols: 1]The coordinate system on the backing plate 3 is given by Oxy, and a hyperbola drawn with the origin O as the center in Oxy is given by hyperbola OF₁F₂P，F₁And F₂Respectively a first focus and a second focus of the hyperbola, and P is a point on the hyperbola. 2]The projection values of the first scale 212 on the sliding block frame beam 2, the second scale 414 on the first positioning tube 4, the third scale 514 on the second positioning tube 5, the fourth scale 612 on the first straight-tooth rod 6 and the fifth scale 712 on the second straight-tooth rod are consistent with the projection values when the axes Ox and the second straight-tooth rod are parallel. 3]The tube center lines of the first circular tube 42 of the first positioning tube 4 and the fifth circular tube 52 of the second positioning tube 5 are perpendicular to the Oxy plane. 4]The projection points of the first indicator light 213, the second indicator light 214, the third indicator light 215 and the fourth indicator light 817 in the Oxy are hyperbola first focuses F respectively in sequence₁Center O, second focus F₂And a hyperbolic upper starting point P. 5]The center lines of the two tape rulers 10 in the static or telescopic process are consistent and parallel to the base plate 3 and are on a plane. 6]The conical tip 96 of the brush 9 is defined as a point P in the coordinate system Oxy. 7]The projection of the coordinate system of the sheet on the shim plate 3 coincides with Oxy. 8]Hyperbolic OF₁F₂Instance of PAxial length of 2a virtual axial length of 2b, F₁F₂The distance between the two is the focal length 2c, and the relationship between a, b and c is c²＝a²+b²。

Thirdly, adjusting the initial position: 1]Definite hyperbola OF₁F₂P, parameters a, b, c and the position of the center point O. 2]Will be drawn with a coordinate system and a focus F₁And a focal point F₂Is fixed to the underlay 3. 3]Turning on all indicator light power switches, releasing the pin of the fourth slider 27 to move the light spot of the second indicator light 214 to align with the center point O on the paper and then fixing, and moving the third slider 26 and the fifth slider 28 respectively to align the light spots of the first indicator light 213 and the third indicator light 215 with the focus F respectively₁And a focal point F₂And (5) fixing. 4]The pin on the first sliding block 24 is released to move the first positioning tube 4, so that the first round tube 42 is overlapped with the light beam of the first indicator light 213 and then fixed. 5]The pin of the second slide block 25 is released to move the second positioning tube 5, so that the fifth round tube 52 is fixed after being overlapped with the light beam of the third indicator light 215. 6]The pin of the eighth slide block 78 of the seventh slide block 68 on the first straight-toothed bar 6 and the second straight-toothed bar and the third nut 611 are loosened, the first screw slide block 62 and the second screw slide block 63 are moved to a distance equal to c-a away from the center of the first positioning pipe 4 and then fixed, the driving device 8 is meshed with the first straight-toothed bar 6 and then fixed by the third nut 611, the first straight-toothed bar 6 is pushed to rotate to be consistent with the positive direction of the Ox shaft in the coordinate system Oxy (the second straight-toothed bar is consistent with the negative direction of the Ox shaft), and then the driving device 8 is meshed with the second straight-toothed bar and then fixed by the third nut 611. The light spot of the fourth indicator light 817 is on the Ox axis. 7]The tape head baffle 105 pulling the first tape is fixed at the third bead 818 of the driving device 8, and the tape head baffle 105 pulling the second tape is fixed at the fourth bead 819 of the driving device 8. The extension length of the first circle of ruler is c-a, the extension length of the second circle of ruler is c + a, and the difference between the extension lengths of the second circle of ruler and the first circle of ruler is 2 a. 8]The tip 96 of the adjustment cone is fixed by a fourth pin 97 after being separated from the sheet. 9]All indicator light power switches are turned off.

Fourthly, demonstrating hyperbola definition: the difference between the distances from the moving point to the two fixed points on the plane is a fixed length 2a, and the track of the moving point is a hyperbola. 1]And turning on a power switch of the indicator lamp. 2]Flick the second backward with one handThe outer end of the straight toothed bar is swung clockwise with the other hand grasping the right angle crank 815. The driving device 8 stops slightly pushing the second straight toothed bar after rotating, the right-angle crank 815 is continuously rotated, and the driving device 8 moves away from the first focus F along the second straight toothed bar and the first straight toothed bar 6₁And a second focal point F₂When the second indicator light 817 moves, the light spot on the paper moves to the left and the back, and the motion track keeps the difference between the extension lengths of the second circle ruler and the first circle ruler to be 2 a. 3]When the fourth indicator light 817 approaches the outer end of the second straight-toothed bar or the first straight-toothed bar 6, the right-angle crank 815 stops rocking, and the moving track of the light spot is near the second half of the first focus hyperbolic curve. 4]The fourth indicator light 817 is turned off, the right-angle crank 815 is rotated counterclockwise, and the operation is stopped when the drive device 8 is returned to the Ox axis. 5]Turning on a fourth indicator light 817, slightly pulling the outer end of the second straight toothed bar forwards by one hand, rotating the right-angle crank 815 clockwise, stopping slightly pulling the second straight toothed bar after rotating, continuously rotating the right-angle crank 815, and keeping the driving device 8 away from the first focus F along the second straight toothed bar and the first straight toothed bar 6₁And a second focal point F₂And when the fourth indicator light 817 moves, the light spot of the fourth indicator light on the paper moves to the left front, and the motion track keeps the difference between the extension lengths of the second circle ruler and the first circle ruler to be 2a consistently. 6]When the fourth indicator light 817 approaches the outer end of the second straight-toothed bar or the first straight-toothed bar 6, the right-angle crank 815 stops rocking, and the moving track of the light spot is near the first half of the first focus hyperbolic curve. 7]And demonstrating a hyperbola close to the second focus by imitating a hyperbola close to the first focus.

Fifthly, finishing the demonstration: and turning off the indicator light to restore the device to the initial state.

The utility model discloses a hyperbola definition demonstration and curve drawing instrument has the function of drawing the hyperbola according to the definition, and the operating procedure is:

firstly, assembling an instrument: as it is demonstrated for the hyperbolic definition.

Setting symbols: as it is demonstrated for the hyperbolic definition.

Thirdly, adjusting the initial position: as it is demonstrated for the hyperbolic definition.

Fourthly, demonstrating hyperbola definition: 1-3 ] are the same as for demonstrating the definition of the hyperbola. 4] turn off the fourth indicator light 817.

Fifthly, drawing a hyperbola: 1]The adjustable conical nib 96 is fixed by a fourth pin 97 after contacting the paper, and the conical nib 96 is positioned at the left rear of the paper. 2]By rotating the right-angle crank 815 counterclockwise with one hand, the driving device 8 moves along the second straight rack bar and the first straight rack bar 6 toward the first focus F₁And a second focal point F₂Moving, the conical nib 96 draws a curve on the paper. 3]The rocking is stopped when the conical nib 96 reaches the Ox axis, the outer end of the second straight rack bar is slightly pulled forward with the other hand, the right-angle crank 815 is rocked clockwise at the same time, the slight pulling of the second straight rack bar is stopped after the conical nib 96 moves forward through the Ox axis, the right-angle crank 815 continues to be rocked clockwise, and the conical nib 96 continues to draw a curve on the paper. 4]When the conical tip 96 approaches the outer end of the second straight rack bar or the first straight rack bar 6, the right-angle crank 815 is stopped from being swung, and the conical tip 96 is fixed by the fourth pin 97 after being adjusted to be away from the paper, so that a hyperbolic curve near the first focus is drawn on the paper. 5]The counterclockwise cranking quarter crank 815 stops when the drive 8 returns to the Ox axis. 6]The pin of the eighth slide block 78 of the seventh slide block 68 on the first straight toothed bar 6 and the second straight toothed bar and the third nut 611 are loosened, the first screw slide block 62 and the second screw slide block 63 are moved to a distance equal to c + a away from the center of the first positioning pipe 4 and then fixed, and the driving device 8 is meshed with the second straight toothed bar of the first straight toothed bar 6 and then fixed by the third nut 611. 7]One hand flicks the outer end of the second straight toothed bar backwards and the other hand swings the right angle crank 815 clockwise, stopping when the conical nib 96 approaches the outer end of the second or first straight toothed bar 6. 8]The adjustable conical nib 96 is fixed by a fourth pin 97 after contacting the paper, and the conical nib 96 is positioned on the rear right side of the paper. 9]The right-angle handle 815 is swung counterclockwise with one hand and the conical nib 96 draws a curve on the paper, stopping the swing when the conical nib 96 reaches the Ox axis. 10]One hand slightly pulls the outer end of the second straight-tooth rod forwards, meanwhile, the other hand rotates the right-angle crank 815 clockwise, when the conical pen point 96 leaves the Ox shaft, the slight pulling of the second straight-tooth rod is stopped, the right-angle crank 815 continues to rotate clockwise, and the conical pen point 96 continues to draw a curve on the paper. 11]At the conical tip 96 near the second straight toothed bar orWhen the outer end of the first straight-toothed bar 6 is swung, the right-angle crank 815 is stopped, the conical nib 96 is adjusted to be separated from the paper, and then the conical nib is fixed by the fourth pin 97, leaving a hyperbola close to the second focus on the paper.

Sixthly, finishing the demonstration: and turning off the indicator light, taking out the paper with the hyperbolic curves, and restoring the device to the initial state.

The utility model discloses a hyperbola definition demonstration and curve drawing instrument has the demonstration and draws the function of going on simultaneously with the curve, and operating procedure is:

firstly, assembling an instrument: as it is demonstrated for the hyperbolic definition.

Setting symbols: as it is demonstrated for the hyperbolic definition.

Thirdly, adjusting the initial position: as it is demonstrated for the hyperbolic definition.

Fourthly, demonstrating hyperbola definition: 1-3 ] are the same as for demonstrating the definition of the hyperbola.

Fifthly, drawing a hyperbola: 1] the tip 96 of the cone is adjusted to be centered on the light spot of the fourth indicator 817 and fixed by the fourth pin 97 after contacting the paper. 2-11 ] are the same as drawing a hyperbola by definition.

Sixthly, drawing is finished: as if the hyperbola were drawn by definition.

The utility model discloses an appearance is drawn to demonstration and curve of hyperbola definition, the function that can draw on any fixed plane, as long as adsorb spherical surface sucking disc 17 on chassis 1 on the fixed plane, twist and move second nut 18 and make first rectangular plate 11 be in steady state, imitate the method of drawing on backing plate 3, can draw the hyperbola of arbitrary parameter on the fixed plane.

The utility model discloses economic value and application prospect of hyperbola definition demonstration and curve drawing appearance: with the technical progress and economic development, advanced equipment is required to improve the teaching effect and the product quality, a hyperbola definition demonstration and curve drawing instrument which is simple to operate and convenient to use is urgently needed, only thousands of schools are shared in the high school and the middle school education nationwide, numerous engineering designs and gear manufacturing enterprises are needed, the quantity is considerable, the market prospect is very wide, and good economic benefits and social benefits are achieved.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (2)

1. The hyperbola definition demonstration and curve drawing instrument is characterized in that: including chassis, slider frame roof beam, backing plate, first registration arm, second registration arm, first straight-tooth pole, the straight-tooth pole of second, drive arrangement, painting brush and area chi, the middle part on chassis is arranged in to the backing plate, slider frame roof beam is arranged in above the chassis, slider frame roof beam left part is arranged in to first registration arm, slider frame roof beam right part is arranged in to the second registration arm, first straight-tooth pole is arranged in on the first registration arm, the straight-tooth pole of second is arranged in on the second registration arm, drive arrangement is in the same place with the meshing of first straight-tooth pole and the straight-tooth pole of second, the drive arrangement lower part is arranged in to the painting brush, the area chi is connected first registration arm and drive arrangement, second registration arm and drive arrangement respectively.

2. The hyperbola-defined presentation and curve-drawing apparatus of claim 1, wherein: the first straight toothed bar comprises a first rectangular bar, a first screw rod sliding block, a second screw rod sliding block and a first rack, a first sliding groove is formed in the middle of the upper surface of the first rectangular bar, the first screw rod sliding block is arranged in the first sliding groove and comprises a sixth sliding block, a second screw rod, an eleventh annular disc and a third nut, a spiral pin is arranged on the sixth sliding block, the second screw rod is arranged on the surface of the sixth sliding block, the fixed eleventh annular disc is arranged in the middle of the second screw rod, the third nut is arranged on the upper portion of the second screw rod, a fourth scale is arranged at the front end of the surface of the first rectangular bar, the first rack is arranged on the front side surface of the first rectangular bar, a second sliding groove is formed in the middle of the bottom surface of the first rectangular bar, the second screw rod sliding block is arranged in the second sliding groove, and the second sliding groove and the second screw rod sliding block are respectively identical to the first sliding groove and the first screw rod sliding block, and a second rectangular rod is arranged on the right side surface of the first rectangular rod.

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