CN211403799U

CN211403799U - Sine function definition demonstration and image synthesizer

Info

Publication number: CN211403799U
Application number: CN201921786080.2U
Authority: CN
Inventors: 王书营
Original assignee: Nanjing Institute of Industry Technology
Current assignee: Nanjing Institute of Industry Technology
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-09-01
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a sinusoidal function definition demonstration and image synthesizer, the utility model aims at providing a can demonstrate sinusoidal function's definition in the unit circle fast, can expand the sinusoidal relation in the unit circle for the orthogonal function relation, can synthesize sinusoidal curve etc. fast in rectangular coordinate system. Including riser support, horizontal pallet, diameter chord member, circular arc panel, interior intubate lamp, slewing mechanism, volume angle dish, radial bull stick, tangential panel, this device has: the operation is simple, the functions are complete, the structure is compact, the cost is low, and the carrying is convenient; the applicability is strong, and the method is suitable for teaching, science popularization, environment beautification and the like.

Description

Sine function definition demonstration and image synthesizer

Technical Field

The utility model relates to a teaching instrument, especially a sinusoidal function definition demonstration and image synthesizer.

Background

A trigonometric function is an important tool for solving the relation between circular arcs and straight lines by people at present, and is the most important knowledge which is necessary to be mastered by college students and middle school students, wherein an cotangent function is the most commonly used, the meaning of the cotangent function is the ratio of adjacent sides to opposite sides in a right triangle, a tangent length which is clamped by an arc length which is clamped by a variable angle and an independent variable and a cotangent angle is a dependent variable in a unit circle to form a unitary function, the relation between the arc and the tangent is complex along with the change of the angle, the cotangent curve is in a plane rectangular coordinate system, namely, the arc length is set as a horizontal coordinate tangent length to be set as a vertical coordinate to establish an orthogonal relation, an image in one period is a single increasing curve, the same relation has great reflection difference under two environments, and the relation between the two environments is not clear, great difficulty is brought to the teaching of teachers and the learning application of students, the two environments need to, teachers urgently need scientific teaching aids to assist teaching, students also need easily learned tools, and families and public places also need ornaments expressing scientific principles to beautify the environment.

In order to solve the above problems, a few devices related to the cotangent function are also presented in the near stage, for example, a 'trigonometric function line demonstration instrument' is provided in the document with the patent application number of 201820266760.0, and the device is provided with a transverse slide way, a steel pipe, a sine fixed block and a sine elastic band, wherein the colors of the front and back surfaces of the sine elastic band and the cosine elastic band are different, so that the change of the trigonometric function value in different quadrant signs can be conveniently and visually demonstrated. The device can only express a sine curve through colors, and cannot dynamically demonstrate the definition of the cotangent function in a unit circle, the conversion of the cotangent function into an image in a plane rectangular coordinate system and other problems. The patent application number 201710380616.X discloses a plotter for drawing an overcut curve, which comprises a support, a support frame, a sliding block plate, a rack, a driving gear, a transmission gear, a rolling gear, a first belt pulley and a second belt pulley, wherein the second belt pulley is connected with a painting brush driving gear, so that the overcut curve can be drawn by using a tool, and the defects of the conventional hand-drawing or complex drawing method are overcome. But the problem of how to convert the cotangent function from the definition form in the unit circle to the orthogonal relation of the image in the plane rectangular coordinate system is not solved. The patent application No. 201420122696.0 discloses a tangent cotangent function curve auxiliary drawing instrument, which comprises a drawing board, a sliding plate, a disk, a pulley, a rocker arm, a left driving wire and a right driving wire, wherein a movable pulley and a unit circle are skillfully combined to complete drawing of a tangent cotangent trigonometric function curve, and the characteristic of the movable pulley in the physical subject is utilized, and the concept of the tangent cotangent function in the mathematical subject is also involved. The device can only draw a positive cotangent curve and cannot demonstrate the definition of a cotangent function in a unit circle, the conversion of the cotangent function into an image in a plane rectangular coordinate system and the like. They reflect the problem of the local inability to systematically represent the unity of circular arcs and straight lines globally through motion.

SUMMERY OF THE UTILITY MODEL

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

the sine function definition demonstration and image synthesis instrument comprises a vertical plate support, a transverse pallet, a diameter chord plate, an arc display plate, an inserted tube lamp, a rotating mechanism, a measuring angle disc, a radial rotating rod and a tangential display plate, wherein the transverse pallet is arranged in the middle of the vertical plate support, the diameter chord plate and the rotating mechanism are respectively arranged at the left part of the transverse pallet, the measuring angle disc and the radial rotating rod are arranged on the rotating mechanism, the two arc display plates are in semi-circular arcs and are respectively arranged on the upper surface and the lower surface of the diameter chord plate, the inserted tube lamp is arranged on a circumference surrounded by the two arc display plates, and the tangential display plate is arranged at the right part of the transverse pallet;

a further technical scheme, the diameter chord plate includes second rectangular plate, location slide, square tube lock, square tube pole, first pipe, pipe lock, the second rectangular plate is equipped with square tube lock, fourth rectangle groove, pipe lock from the right side to a left side in proper order, square tube lock includes transparent square pipe, first set square, third inserted bar, second set square, second pipe, second spring, the side is equipped with the opening about transparent square pipe, it is equipped with first set square and second set square respectively to control the opening, first set square and second set square opposite flank are equipped with second pipe and third inserted bar respectively, the third inserted bar extends to in the second pipe, the outer periphery of second pipe is equipped with the second spring, be equipped with fourth rectangle groove in the middle of the second rectangular plate, fourth rectangle is equipped with the location slide that the groove matches with it, location slide includes third rectangular plate, third inserted bar, second rectangular plate, fourth rectangle groove, second pipe, second spring, second rectangular plate lock, pipe lock, second rectangular plate lock, second triangular plate lock are equipped with, The spring type square tube spring support comprises a first circular ring piece, a first circular shaft rod, a fourth rectangular plate, a fifth rectangular plate and a first spring, wherein the first circular ring piece is arranged at the front end and the rear end of the surface of the third rectangular plate, the first circular shaft rod is sleeved in the first circular ring piece, the periphery of the first circular shaft rod is provided with the fourth rectangular plate and the fifth rectangular plate which are perpendicular to the first circular shaft rod, the first spring is an arc spring sleeve arranged on the first circular shaft rod, the edge of the third rectangular plate is provided with an elastic lock, and the left side surface and the right side surface of the second rectangular plate are respectively provided with a square tube rod and a first circular tube.

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

1. the sine function definition demonstration and image synthesis instrument of the utility model has simple operation, and can complete all demonstration, expansion and image synthesis only by pushing and rotating the radial rotating rod and moving the tangential display board under the initial condition;

2. the utility model discloses a sinusoidal function definition demonstration and image synthesizer, it is multiple functional: the device can complete the mutual conversion of circular arcs and straight lines, demonstrate the definition of a sine function through light spot distribution, expand a unit circle by utilizing tangential rolling, and quickly synthesize an expanded image into a sine curve. The applicability is strong: can be used for demonstration and image synthesis in various occasions and at any visual angle. Is suitable for teaching, science popularization, environment beautification and the like.

3. At present, no product exists in the market, and the sine function definition demonstration and image synthesizer is compact in structure, low in cost, safe, reliable, light and handy.

Drawings

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

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

Fig. 3 is a schematic structural view of the transverse pallet of the present invention.

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

Fig. 5 is a schematic structural view of the middle arc display board of the present invention.

Fig. 6 is a schematic structural diagram of the bidirectional switch of the present invention.

Fig. 7 is a schematic structural diagram of the tube inserted lamp in the present invention.

Fig. 8 is a schematic structural diagram of the rotating mechanism of the present invention.

Fig. 9 is a schematic structural view of the medium angle plate of the present invention.

Fig. 10 is a schematic structural view of the middle radial rotating rod of the present invention.

Fig. 11 is a schematic structural view of the middle tangential display board of the present invention.

In the drawings: 1-a vertical plate support, 11-a projection vertical plate, 12-a transverse plate rod, 13-an adjusting support leg, 14-a first screw rod, 15-a first nut, 16-a prismatic table base, 17-a first scale, 18-a second scale, 19-a first round pipe, 110-a first nail hole, 111-a second nail hole, 112-a first arc rack and 113-a notch; 2-transverse pallet, 21-first rectangular plate, 22-first right-angle baffle, 23-first arc baffle, 24-second right-angle baffle, 25-second arc baffle, 26-first rectangular groove, 27-second rectangular groove, 28-first sliding block, 29-third rectangular groove, 210-fourth rectangular groove, 211-first inserted link, 212-second inserted link; 3-diameter chord plate, 31-second rectangular plate, 32-positioning sliding plate, 33-square tube lock, 34-fourth rectangular groove, 35-square tube rod, 36-first circular tube, 37-circular tube lock, 321-third rectangular plate, 322-first circular ring piece, 323-first circular shaft rod, 324-fourth rectangular plate, 325-fifth rectangular plate, 326-first spring, 327-elastic lock, 331-transparent square tube, 332-first triangular plate, 333-third inserted bar, 334-second triangular plate, 335-second circular tube, 336-second spring and 371-circular tube lock shell; 4-circular arc display board, 41-sixth rectangular board, 42-fifth rectangular groove, 43-rotary lamp holder, 44-first right-angle clamp board, 45-second right-angle clamp board, 46-sixth rectangular groove, 47-red diode lamp, 48-first optical fiber, 49-bidirectional switch, 410-battery box, 411-power switch, 431-third circular pipe, 432-directional base block, 433-disk lamp holder, 434-transparent circular pipe, 441-seventh rectangular board, 442-eighth rectangular board, 443-first square hole, 451-first circular hole, 491-switch bottom board, 492-second circular shaft rod, 493-first circular ring disk, 494-forward angular tooth, 495-reverse angular tooth, 496-first supporting rod, 497-second supporting rod, 498-transparent thin plate sheet piece, 499-shading film, 4910-metal fork rod, 4911-first plastic tube, 4912-first lead, 4913-second plastic tube, 4914-second lead, 4915-seventh rectangular groove, 4916-first transparent tube, 4917-second transparent tube, 4918-first baffle, 4919-second baffle, 4920-third nail hole; 5-inner inserted tube lamp, 51-rubber tube plug, 52-third transparent tube, 53-fourth transparent tube, 54-yellow diode lamp, 55-green diode lamp, 56-second optical fiber, 57-pin lock, 58-third plastic tube, 59-second round hole, 510-third wire, 511-first disc; 6-a rotating mechanism, 61-a third round shaft rod, 62-a round pipe sleeve, 63-a second round ring disc, 64-a right-angle crank, 65-a fourth nail hole, 66-a first pipe sleeve frame plate, 67-a second pipe sleeve frame plate, 68-an eighth rectangular groove and 69-a fifth nail hole; 7-angle measuring disc, 71-semicircular transparent plate, 72-semicircular arc plate, 73-ninth rectangular plate, 74-tenth rectangular plate, 75-second circular arc rack, 76-ninth rectangular groove, 77-semicircular hole, 78-angle line and 79-tenth rectangular groove; 8-radial rotating rods, 81-eleventh rectangular plates, 82-semicircular plates, 83-third triangular plates, 84-twelfth rectangular plates, 85-fourth circular shaft rods, 86-cambered plates, 87-eleventh rectangular grooves, 88-twelfth rectangular grooves, 89-second sliding blocks, 810-third sliding blocks, 811-third scales, 812-sixth nail holes, 813-circular rollers and 814-bolt locks; the device comprises a 9-tangential display plate, a 91-thirteenth rectangular plate, a 92-square pipe plug, a 93-sliding pipe lock, a 94-first straight rack, a 95-second straight rack, a 96-circular truncated cone groove, a 97-fourteenth rectangular plate, a 98-twelfth rectangular groove, a 99-fifteenth rectangular plate 931-rectangular strip, a 932-fourth sliding block and a 933-circular pipe plug.

Detailed Description

The technical solution of the present invention is explained in detail below, but the scope of protection of the present invention is not limited to the embodiments.

As shown in fig. 1-11, sine function definition demonstration and image synthesizer, including riser support 1, horizontal pallet 2, diameter chord 3, circular arc panel 4, interior peg lamp 5, slewing mechanism 6, angulation dish 7, radial bull stick 8, tangential panel 9, riser support 1's middle part is arranged in to horizontal pallet 2, diameter chord 3 and slewing mechanism 6 arrange the left part of horizontal pallet 2 respectively in, slewing mechanism 6 is arranged in to angulation dish 7 and radial bull stick 8 on, diameter chord 3's the higher authority and the following are arranged respectively in to two circular arc panels 4, interior peg lamp 5 is arranged in on the circumference that two circular arc panels 4 enclose, the right part of horizontal pallet 2 is arranged in to tangential panel 9.

As shown in fig. 1-2, the vertical plate support 1 includes a projection vertical plate 11, a horizontal plate rod 12, and adjusting support legs 13, the projection vertical plate 11 is a rectangular smooth hard plate, the horizontal plate rod 12 perpendicular to the projection vertical plate 11 is disposed at both ends of the lower bottom surface of the projection vertical plate 11, the adjusting support legs 13 are disposed at both ends of the horizontal plate rod 12, the adjusting support legs 13 include a first screw 14, a first nut 15, and a prism base 16, one end of the first screw 14 is connected to the horizontal plate rod 12, the other end of the first screw 14 is provided with the prism base 16, the first nut 15 is sleeved in the middle of the first screw 14, a vertical first scale 17 is disposed in the middle of the front side surface of the projection vertical plate 11, a horizontal second scale 18 is disposed on the right side of the middle of the first scale 17, the first scale 17 and the second scale 18 form a rectangular coordinate system, a rectangular second nail hole 111 is disposed at the end of the second scale 18, a first circular tube 19 is, the first circular-arc rack 112 is arranged on the circumferential surface of the first circular tube 19, a notch 113 is formed in the tube wall of the front end of the first circular tube 19, the first circular-arc rack 112 is a gear ring with straight teeth on the outer side, and a rectangular first nail hole 110 is formed in the left side of the first circular tube 19. The second scale 18, the first nail hole 110 and the second nail hole 111 are on the same horizontal line.

As shown in fig. 1 and 3, the transverse pallet 2 comprises a first rectangular plate 21, a first right-angle baffle 22, a first circular arc baffle 23, a second right-angle baffle 24, a second circular arc baffle 25 and a first slide block 28, wherein the first rectangular plate 21 is a straight rectangular thin and hard plate strip, the right end of the surface of the first rectangular plate 21 is provided with a second rectangular groove 27 and a first rectangular groove 26 from top to bottom in sequence, the second rectangular groove 27 is provided with a plurality of first slide blocks 28 matched with the second rectangular groove, the first slide blocks 28 are provided with pin locks, the first rectangular groove 26 is rectangular, the middle of the left end of the surface of the first rectangular plate 21 is provided with the first right-angle baffle 22 and the first circular arc baffle 23 from left to right in sequence, the first right-angle baffle 22 comprises two rectangular prism plates vertically formed by the two rectangular hard plates, the first circular arc baffle 23 comprises a circular arc prism plate synthesized by the rectangular prism plate strip and a semicircular plate surface, a side of half cylinder face is connected with first rectangular plate 21, and another side is connected with the rectangle lath, groove rail in first right angle baffle 22 and the formation of first circular arc baffle 23, the lower extreme is equipped with third rectangle groove 29 and fourth rectangle groove 210 from a left side to the right side in the middle of first right angle baffle 22 and the first circular arc baffle 23 in proper order, third rectangle groove 29 and fourth rectangle groove 210 are the rectangle recess, first right angle baffle 22 in bottom surface is equipped with second circular arc baffle 25 and right angle baffle 24 in proper order with first circular arc baffle 23 position under the first rectangular plate 21, second right angle baffle 24 and second circular arc baffle 25 are the same with the structural action of first right angle baffle 22 and first circular arc baffle 23. The left end and the right end of the rear side surface of the first rectangular plate 21 are respectively provided with a first inserted bar 211 and a second inserted bar 212, the transverse pallet 2 is formed by inserting the first inserted bar 211 and the second inserted bar 212 into a first nail hole 110 and a second nail hole 111 of a projection vertical plate 11 on a vertical plate support 1 and fixing the first inserted bar 211 and the second inserted bar 212, and the first rectangular plate 21 passes through the notch 113.

As shown in fig. 1 and 4, the diameter chord plate 3 is a device for isolating the tube inserting lamp 5, and includes a second rectangular plate 31, a positioning slide plate 32, a square tube lock 33, a square tube rod 35, a first circular tube 36, and a circular tube lock 37, wherein the second rectangular plate 31 is a rigid flat plate, the second rectangular plate 31 is sequentially provided with the square tube lock 33, a fourth rectangular groove 34, and the circular tube lock 37 from right to left, the square tube lock 33 includes a transparent square tube 331, a first triangular plate 332, a third insertion rod 333, a second triangular plate 334, a second circular tube 335, and a second spring 336, the left and right side surfaces of the transparent square tube 331 are provided with openings, the left and right openings are respectively provided with the first triangular plate 332 and the second triangular plate 334, the opposite side surfaces of the first triangular plate 332 and the second triangular plate 334 are respectively provided with the second circular tube 335 and the third insertion rod 333, the third insertion rod 333 extends into the second circular tube 335, the second circular tube 335 is provided with the second spring 335, the second spring 336 is connected at both ends to the first triangle plate 332 and the second triangle plate 334, respectively. The middle of the second rectangular plate 31 is provided with a fourth rectangular groove 34, the fourth rectangular groove 34 is provided with a positioning sliding plate 32 matched with the fourth rectangular groove, the positioning sliding plate 32 comprises a third rectangular plate 321, a first circular ring piece 322, a first circular shaft rod 323, a fourth rectangular plate 324, a fifth rectangular plate 325 and a first spring 326, the front end and the rear end of the surface of the third rectangular plate 321 are provided with the first circular ring pieces 322, the first circular ring pieces 322 are arranged in parallel, the first circular shaft rod 323 is sleeved in the first circular ring pieces 322, the circumferential surface of the first circular shaft rod 323 is provided with the fourth rectangular plate 324 and the fifth rectangular plate 325 which are perpendicular to the first circular shaft rod 323, the fourth rectangular plate 324 and the fifth rectangular plate 325 are perpendicular to each other and are positioned in the middle of the circumferential surface of the first circular shaft rod 323, the first spring 326 is an arc spring sleeved on the first circular shaft rod 323, the fifth rectangular plate 325 can rotate along with the first circular shaft rod 323 when the fourth rectangular plate 324 is pushed reversely, the edge of the third rectangular plate 321 is provided with an elastic lock 327, the structure of the round tube lock 37 is the same as that of the square tube lock 33, but the shell is a transparent round tube lock shell 371. The left and right sides of the second rectangular plate 31 are respectively provided with a square tube rod 35 and a first circular tube 36. The square pipe pole 35 is the cuboid, first pipe 36 is the cylinder, diameter chord 3 is in inserting square pipe pole 35 and first pipe 36 in proper order into first right angle baffle 22 and first circular arc baffle 23 of horizontal pallet 2, or in inserting second right angle baffle 24 and second circular arc baffle 25.

As shown in fig. 1 and 5-6, the circular arc display board 4 is a device for forming a unit circumference and expanding into a horizontal coordinate, and includes a sixth rectangular board 41, a rotating lamp holder 43, a red diode lamp 47, a first optical fiber 48 and a two-way switch 49, the sixth rectangular board 41 is a rectangular thick board strip with elasticity, the sixth rectangular board 41 is provided with a fifth rectangular groove 42, the fifth rectangular groove 42 is provided with the rotating lamp holder 43, the rotating lamp holder 43 includes a third circular pipe 431, a directional base block 432, a circular disk lamp holder 433 and a transparent circular pipe 434, the third circular pipe 431 is cylindrical, two ends of the third circular pipe 431 are respectively connected with the front and rear side walls of the fifth rectangular groove 42, the middle of the third circular pipe 431 is provided with the directional base block 432, the rectangular base block 432 is a rectangular parallelepiped, the left and right side faces of the rectangular parallelepiped are arc side faces, the upper surface of the directional base block 432 is provided with the circular disk lamp holder 433, the, the middle of the disc lamp holder 433 is provided with the positive and negative electrodes of the conducting wires, the directional base block 432 can rotate around a third round pipe 431, and the third round pipe 431 is internally provided with the conducting wires which are connected with the disc lamp holder 433. The front side surface of the sixth rectangular plate 41 is provided with a sixth rectangular groove 46, the upper end of the sixth rectangular groove 46 is sequentially provided with a battery box 410 and a first optical fiber 48 from left to right, the optical fiber 48 is a line light-emitting optical fiber, the first optical fiber 48 is equidistantly arranged at intervals, the lower end of the sixth rectangular groove 46 is sequentially provided with a power switch 411 and a two-way switch 49 from left to right, the two-way switch 49 comprises a switch bottom plate 491, a second round shaft 492, a first ring disk 493 and a transparent sheet piece 498, the switch bottom plate 491 is an elastic insulating plate, the middle part of the upper surface of the switch bottom plate 491 is provided with a seventh rectangular groove 4915, the seventh rectangular groove 4915 is provided with a transparent sheet piece 498, the rear end of the right side surface of the transparent sheet piece 498 is provided with a shading film 499, the shading film 499 can block light from passing through the transparent sheet piece 498, the middle of the front side surface and the rear side surface of the, the inner pipe openings of the first transparent pipe 4916 and the second transparent pipe 4917 are opposite, the rear side surface of the transparent sheet 498 is provided with a metal fork 4910, the metal fork 4910 is a U-shaped fork made of a hard metal rod, the rear end of the metal fork 4910 is provided with a first plastic pipe 4911 and a second plastic pipe 4913, the front pipe openings of the first plastic pipe 4911 and the second plastic pipe 4913 are respectively opposite to the metal fork 4910, and a first lead wire 4912 and a second lead wire 4914 are sequentially arranged in the first plastic pipe 4911 and the second plastic pipe 4913. A second baffle plate 4919 is arranged on the rear side surface of the switch bottom plate 491, a third nail hole 4920 is arranged in the middle of the second baffle plate 4919, a second stay bar 497 is arranged on the front side surface of the transparent sheet bar 498, the second stay bar 497 is vertically connected with the first stay bar 496, the left side surface of the first stay bar 496 is connected with a first circular ring disk 493, the first circular ring disk 493 is fixed through a second circular shaft rod 492, a forward angle tooth 494 and a reverse angle tooth 495 are sequentially arranged on the circumferential surface of the first circular ring disk 493 from left to right, a first baffle plate 4918 is arranged on the front side surface of the switch bottom plate 491, the reverse angle tooth 495 and the forward angle tooth 494 extend to the outer side of the first baffle plate 4918, the bidirectional switch 49 is fixed on the inner wall of a sixth rectangular groove 46 through a third nail hole 4920 on the second baffle plate 4919 by screws, the first lead wire 4912 is connected with a power line, and the second lead wire 4914 is connected with a lead wire on a rotating lamp holder 43 at the same, adjacent first optical fibers 48 are inserted within the first and second

transparent tubes

4916 and 4917, respectively, and are in contact with the transparent sheet 498. The clockwise rotation forward angle tooth (494) is connected with the circuit, the light energy in two adjacent first optical fibers (48) is continuously transmitted, the counterclockwise rotation reverse angle tooth (495) is disconnected with the circuit, the light energy in two adjacent first optical fibers (48) cannot be continuously transmitted, and the first optical fibers (48) are connected with a bidirectional switch 49. The left side surface of the sixth rectangular plate 41 is provided with a first right-angle clamping plate 44, the first right-angle clamping plate 44 comprises a seventh rectangular plate 441, an eighth rectangular plate 442 and a first square hole 443, the lower bottom surface of the seventh rectangular plate 441 is provided with the eighth rectangular plate 442 perpendicular to the seventh rectangular plate, the middle of the seventh rectangular plate 441 is provided with a first square hole 443, the first square hole 443 is square, the right side surface of the sixth rectangular plate 41 is provided with a second right-angle clamping plate 45, the second right-angle clamping plate 45 is in the same direction as the first right-angle clamping plate 44 and is opposite to the first right-angle clamping plate 44, the middle of the second right-angle clamping plate 45 is provided with a first round hole 451, the first round hole 451 is circular, the circular arc display plate 4 is formed by sleeving the first square hole 443 of the first right-angle clamping plate 44 on the square pipe lock 33 at the right end of the diameter chord plate 3, the first round hole 451 of the second right-angle clamping plate 45 is sleeved on the circular pipe lock 37 at, the radius of the circular arc is the same as that of the first circular tube 19 on the vertical plate bracket 1.

As shown in fig. 3, 5 and 7, the interior tube inserting lamp 5 for representing a sine function value includes a rubber tube plug 51, a third transparent tube 52, a fourth transparent tube 53, a yellow diode lamp 54, a green diode lamp 55 and a second optical fiber 56, wherein the rubber tube plug 51 is a cylindrical rubber block, the third transparent tube 52 is disposed under the rubber tube plug 51, the third transparent tube 52 is disposed under the third transparent tube 52, a pin lock 57 is disposed at a lower end of an outer surface of the third transparent tube 52, the fourth transparent tube 53 is disposed in the third transparent tube 52, the diameter of the fourth transparent tube 53 is smaller than that of the third transparent tube 52, the third transparent tube 52 and the fourth transparent tube 53 are both rigid transparent tubes, the fourth transparent tube 53 can move up and down in the third transparent tube 52 when the pin lock 57 is opened, the fourth transparent tube 53 is fixed at a corresponding position when the pin lock 57 is closed, the end of the fourth transparent tube 53 is provided with a first circular disc 511, the upper surface of the first disk 511 is provided with a green diode lamp 55 and a third conducting wire 510, and the third conducting wire 510 is connected with the green diode lamp 55. The middle part of the rubber pipe plug 51 is provided with a second round hole 59, a second optical fiber 56 is arranged in the second round hole 59, and the second optical fiber 56 extends to the middle section of the fourth transparent pipe 53. The upper surface of the rubber tube plug 51 is provided with a yellow diode lamp 54 and a third plastic tube 58, a metal sheet is arranged in the third plastic tube 58, the metal sheet in the third plastic tube 58 is respectively connected with a third conducting wire 510, the inner insertion tube lamp 5 is formed by inserting the rubber tube plug 51 into a transparent circular tube 434 of the rotary lamp holder 43, and the third plastic tube 58 is respectively sleeved on a positive electrode and a negative electrode of the disc lamp holder 433.

As shown in fig. 1, 2 and 8, the rotating mechanism 6 is a device for bearing the radial rotating rod 8 and the angle measuring plate 7 and providing a rotating power, and includes a third circular shaft rod 61, a circular pipe sleeve 62, a second circular disc 63, and a right-angle crank 64, the third circular shaft rod 61 is a hard circular rod, the third circular shaft rod 61 is provided with a circular pipe sleeve 62 and a second circular disc 63 in sequence from right to left, the circular pipe sleeve 62 is sleeved on the right end of the first circular shaft rod 61, the circumferential surface of the circular pipe sleeve 62 is provided with a first pipe sleeve frame plate 66, the first pipe sleeve frame plate 66 is a flat hard paper plate, the surface is provided with an eighth rectangular groove 68 and a fifth nail hole 69 in sequence from left to right, the circumferential surface of the circular pipe sleeve 62 is provided with a second pipe sleeve frame plate 67 at a position symmetrical to the first pipe sleeve frame plate 66, the second pipe sleeve frame plate 67 has the same structure as the first pipe sleeve frame plate 66, the second circular disc 63 is fixed in the middle of, the surface of the second circular ring disc 63 is provided with a fourth nail hole 65, the front end of the third circular shaft rod 61 is provided with a right-angle crank 64, the right-angle crank 64 comprises two hard rods which are vertically connected with each other, and the third circular shaft rod 61 can drive the second circular ring disc 63 and the circular pipe sleeve 62 to rotate by shaking the right-angle crank 64. The rotating mechanism 6 is to fix the first pipe-casing frame plate 66 and the second pipe-casing frame plate 67 to the third rectangular groove 29 and the fourth rectangular groove 210 of the transverse pallet 2 in sequence by using pins, and the right-angle crank 64 is arranged in front.

As shown in fig. 1, 8 and 9, the angle measuring disc 7 is a device for measuring the size of a corner and supporting a tangential display plate 9, and includes a semicircular transparent plate 71, a semicircular arc plate 72, a ninth rectangular plate 73, a tenth rectangular plate 74 and a second arc rack 75, wherein the semicircular transparent plate 71 is a semicircular thin and hard transparent flat plate, the front side surface of the semicircular transparent plate 71 is provided with the semicircular arc plate 72, the arc of the semicircular arc plate 72 is parallel to the arc of the semicircular transparent plate 71 and is perpendicular to the semicircular transparent plate 71, the lower end of the outer surface of the semicircular arc plate 72 is provided with the second arc rack 75, the second arc rack 75 is the same as the upper half part of the first arc rack 112 on the vertical plate support 1, the center of the semicircular transparent plate 71 is provided with a semicircular hole 77 with a concentric circle, the surface of the semicircular transparent plate 71 is provided with an angle line 78, the angle line 78 extends from the semicircular hole 77 to the, the left side of the lower bottom surface of the semicircular transparent plate 71 is provided with a ninth rectangular plate 73, the middle of the surface of the ninth rectangular plate 73 is provided with a ninth rectangular groove 76, the left side of the lower bottom surface of the semicircular transparent plate 71 is provided with a tenth rectangular plate 74, the middle of the upper surface of the tenth rectangular plate 74 is provided with a tenth rectangular groove 79, the ninth rectangular plate 73 and the tenth rectangular plate 74 are sequentially fixed on the first pipe sleeve frame plate 66 and the second pipe sleeve frame plate 67 of the rotating mechanism 6 by pins for the angle measuring disc 7, and the semicircular hole 77 is sleeved on the third round shaft rod 61.

As shown in fig. 1, 8 and 10, the radial rotating rod 8 is a device for indicating the terminal edge change of the angle and turning on the indicator light, and comprises an eleventh rectangular plate 81, a semicircular ring plate 82, a third triangular plate 83, a twelfth rectangular plate 84 and a round roller 813, wherein the eleventh rectangular plate 81 is a transparent straight hard plate strip, the right side surface of the eleventh rectangular plate 81 is provided with the third triangular plate 83, the third triangular plate 83 is an isosceles triangle and is in a plane with the eleventh rectangular plate 81, and the outer angle indicates the arrow direction. An eleventh rectangular groove 87 is formed in the right end of the surface of the eleventh rectangular plate 81, a second sliding block 89 matched with the eleventh rectangular groove 87 is arranged in the eleventh rectangular groove 87, a twelfth rectangular plate 84 perpendicular to the second sliding block 89 is arranged on the surface of the second sliding block 89, an arched plate 86 is arranged on the upper top face of the twelfth rectangular plate 84, a twelfth rectangular groove 88 is formed in the middle of the twelfth rectangular plate 84, a third sliding block 810 is arranged in the twelfth rectangular groove 88, a fourth round shaft rod 85 is arranged on the left side face of the third sliding block 810, and a round roller 813 is arranged at the other end of the fourth round shaft rod 85. The front end of the left side of the eleventh rectangular groove 87 is provided with 814-bolt lock, the left side of the eleventh rectangular groove 87 is provided with a third scale 811, the left side surface of the eleventh rectangular plate 81 is provided with a semicircular plate 82, the middle of the cambered surface of the semicircular plate 82 is provided with a sixth nail hole 812, the radial rotating rod 8 is formed by sleeving the semicircular plate 82 on a third circular shaft rod 61 of the rotating mechanism 6 and fixing the semicircular plate with a pin through the sixth nail hole 812 and the fourth nail hole 65, and the surface where the third scale 811 is located faces forward. Bolt lock 813 and

as shown in fig. 1, 8 and 11, the tangential display plate 9 is a device for changing and unfolding a light pattern on a unit circle into a straight line segment, and includes a thirteenth rectangular plate 91, a square pipe plug 92, a sliding pipe lock 93, a first straight rack 94 and a second straight rack 95, where the thirteenth rectangular plate 91 is an inelastic straight rack, and is sequentially provided with the first straight rack 94, a circular truncated cone groove 96 and the second straight rack 95 from front to back, the tooth profiles of the first straight rack 94 and the second straight rack 95 are sequentially the same as those of the second circular arc rack 75 and the first circular arc rack 112, the middle part of the upper surface of the thirteenth rectangular plate 91 is provided with the circular truncated cone groove 96, the surface of the circular truncated cone groove 96 is rectangular, the side surface thereof is a semicircular inverted circular truncated cone groove, the shape thereof is the same as the half-section of the orientation base block 432, the circular truncated cone grooves 96 are plural and arranged equidistantly in a straight line, the left side surface of the thirteenth rectangular plate 91 is, the length of the inner wall of the square pipe plug 92 is greater than that of the outer wall of the transparent square pipe 331, and is smaller than that of the first square hole 443. A fourteenth rectangular plate 97 and a fifteenth rectangular plate 99 which are perpendicular to the thirteenth rectangular plate 91 are sequentially arranged at the right end of the lower bottom surface of the thirteenth rectangular plate 91 from front to back, a twelfth rectangular groove 98 is arranged at the lower end of the surface of the fourteenth rectangular plate 97, a fourth sliding block 932 matched with the twelfth rectangular groove 98 is arranged in the twelfth rectangular groove 98, the fourteenth rectangular plate 97 and the fifteenth rectangular plate 99 have the same and symmetrical structure, the sliding pipe lock 93 at the right end of the lower bottom surface of the thirteenth rectangular plate 91 comprises a rectangular batten 931, a fourth sliding block 932 and a circular pipe plug 933, the circular pipe plug 933 is arranged in the middle of the rectangular batten 931, the inner diameter of the circular pipe plug 933 is larger than the outer diameter of the circular pipe lock shell 371 and smaller than the inner diameter of the first circular hole 451, two ends of the rectangular batten 931 are respectively connected with the fourth sliding block 932, a pin lock is arranged on the fourth sliding block 932, the sliding pipe lock 93 is formed by placing, the tangential display board 9 is formed by inserting the square pipe plug 92 into the first square hole 443, straightening the circular arc display board 4, and then inserting the circular pipe plug 932 into the first circular hole 451, or placing the tangential display board 9 into the first rectangular groove 26 of the transverse pallet 2.

The utility model discloses a theory of operation of sinusoidal function definition demonstration and image synthesizer is, and the circular arc curve according to the constant curvature expandes the straight line for zero curvature, turns into the curved light ring to the light that has the rectilinear propagation through optic fibre, utilizes the projection cylinder to realize the conversion between the figure. The method is characterized in that: the operation is simple, and all demonstration and image synthesis can be completed only by pushing and rotating the radial rotating rod and moving the tangential display board under the initial condition; the functions are complete: the device can complete the mutual conversion of circular arcs and straight lines, demonstrate the definition of a sine function through light spot distribution, expand a unit circle by utilizing tangential rolling, and quickly synthesize an expanded image into a sine curve. The structure is compact, the cost is low, and the carrying is convenient; the applicability is strong: can be used for demonstration and image synthesis in various occasions and at any visual angle. Is suitable for teaching, science popularization, environment beautification and the like.

The utility model discloses a sinusoidal function definition demonstration and image synthesizer has the function of demonstrating sinusoidal function y in unit circle and sinx definition, and operating procedure is:

1-vertical plate support, 2-transverse pallet, 3-diameter chord plate, 4-arc display plate, 5-inner inserted tube lamp, 6-rotating mechanism, 7-angle measuring disc, 8-radial rotating rod and 9-tangential display plate

Firstly, assembling an instrument, and 1] placing a prismatic table base 16 of a vertical plate support 1 on a stable horizontal plane, screwing a first nut 15 to enable the vertical plate support 1 to be in a stable state, and adjusting a projection vertical plate 11 to be in a vertical state. 2] the transverse pallet 2 is placed on the vertical plate bracket 1, and the center line of the transverse pallet 2 is consistent with the second scale 18 of the projection vertical plate 11. And 3, taking the first diameter chord plate 3, enabling the square pipe lock 33 and the circular pipe lock 37 to face upwards, sequentially inserting the square pipe rod 35 and the first circular pipe 36 into the first right-angle baffle 22 and the first circular arc baffle 23 on the transverse pallet 2, and sequentially inserting the square pipe rod 35 and the first circular pipe 36 into the second right-angle baffle 24 and the second circular arc baffle 25 below the transverse pallet 2 by using the second diameter chord plate 3 in the same way. 4] take the first circular arc display board 4, put the battery in the battery box 410 and turn off the power switch 411, and adjust the two-way switch 49 to the open position, i.e. the positive angle teeth 494 are inside the external reverse angle teeth 495. The first square hole 443 of the first right-angle clamping plate 44 is sleeved on the square pipe lock 33 at the right end of the first diameter chord plate 3 to be locked, one side with the red diode lamp 47, the first optical fiber 48 and the two-way switch 49 faces forwards, the sixth rectangular plate 41 is bent into a semicircular arc along the semicircular arc on the front end of the first circular pipe 19, the first circular hole 451 of the second right-angle clamping plate 45 is sleeved on the circular pipe lock 37 at the left end of the diameter chord plate 3 to be locked, the second circular arc display plate 4 is placed below the second diameter chord plate 3 in the same way, and the first optical fibers 48 on the two circular arc display plates 4 form a circle. And 5, inserting the first inner tube inserting lamp 5 into the rightmost rotary lamp holder 43 on the first circular arc display board 4, opening the pin lock 57, adjusting the position and the angle between the third transparent tube 52 and the fourth transparent tube 53, fixing and closing the pin lock 57 by using the rightmost positioning sliding plate 32 when the central lines of the third transparent tube 52 and the fourth transparent tube 53 are vertical to the first diameter chord plate 3 and the first disc 511 is close to the upper plane, placing the remaining second, third, … and N inner tube inserting lamps 5 into the remaining rotary lamp holders 43 on the first circular arc display board 4 by the same method, and then placing the N inner tube inserting lamps 5 on the second circular arc display board 4 in the sequence from left to right. 6, the rotating mechanism 6 is arranged on the transverse pallet 2, and the center of the third round shaft rod 61 is adjusted to be consistent with the center of the first round pipe 19 and then fixed by a pin. 7, a first angle measuring disc 7 is arranged on the rotating mechanism 6, a semicircular transparent plate 71 is adjusted to be parallel to the projection vertical plate 11, a semicircular arc plate 72 is fixed by a pin after being consistent with the upper semicircular arc of the first circular tube 19, and a second angle measuring disc 7 is arranged below the rotating mechanism 6 by the same method. 8] the radial rotating rod 8 is arranged on the rotating mechanism 6, the positions of the second sliding block 89 and the third sliding block 810 are adjusted, so that the round roller 813 is positioned behind the semicircular transparent plate 71 of the angle measuring disc 7 and can roll along the angle measuring disc 7 along with the rotation of the radial rotating rod 8, the outer end of the cambered plate 86 can touch the forward angle teeth 494 and the reverse angle teeth 495 of the circular arc display plate 4, and finally, the cambered plate is fixed by the bolt lock 814. 9] two tangential display boards 9 are taken to slide the sliding pipe locks 93 into the inside, and the sliding pipe locks are respectively placed in the first rectangular groove 26 of the transverse pallet 2 and fixed by the first sliding block 28 in the second rectangular groove 27.

Adjusting the initial position: 1] the bolt lock 814 is opened, and the right-angle crank 64, 2 is shaken to align the center line of the radial rotating rod 8 with the 0 DEG line of the protractor plate 7, and then the bolt lock 814 is rotated and fixed.

Thirdly, symbol setting: 1]The center of the unit circle is set as O₁It is a first circular tubeThe projection point of the center of 19 on the projection vertical plate 11 is passed through by the center line of the third round shaft rod 61. 2]O₁The vertex of the upper corner of the angle measuring disc 7 is shown, the 0-degree line of the angle measuring disc 7 is the initial side of the angle, and the central line of the radial rotating rod 8 is the final side of the angle. 3]Center line to point O of first optical fiber 48 on arc display board 4₁Is set to one unit, i.e. the first optical fiber 48 constitutes a unit circle. 4]The arc degree of the angle change formed by the rotation of the radial rotating rod 8 is x, and the corresponding arc length on the unit circumference is x. 5]The distance between the yellow diode lamp 54 and the green diode lamp 55 on the interior tube lamp 5, i.e. the length of the second optical fiber 56, represents a sine function value, the first circular arc display board 4 is positive, and the second circular arc display board 4 is negative. The yellow diode lamp 54 is at point A, and the green diode lamp 55 is at point B, ABO₁Is a right triangle, ∠ AO₁B＝x，AB＝sinx。6]The serial numbers of the inner tube lamps 5 also represent the serial numbers of all the devices at the positions where the inner tube lamps are located, namely, the serial numbers are marked as first, second, … and N from the right to the left on the first circular arc display board 4, the serial numbers are marked as N +1, N +2, … and 2N from the left to the right on the second circular arc display board 4, and the yellow diode lamps 54, the green diode lamps 55, the two-way switch 49, the positioning sliding plate 32 and other devices where the inner tube lamps are located all use the serial numbers.

Fourthly, defining and demonstrating a sine function in a unit circle: 1]Power switch 411 is opened and bolt lock 814 is released. 2]Slowly shaking the right-angle crank 64 counterclockwise, when the radial rotating rod 8 reaches the end point of the first section of the first optical fiber 48, the first two-way switch 49 is turned on, the first section of the first optical fiber 48, the yellow diode lamp 54, the green diode lamp 55 and the second optical fiber 56 on the first inner inserting tube lamp 5 all emit light, and the arc length of the light emitted by the first optical fiber 48 is x₁The straight line segment of the second optical fiber 56 is sinx₁When the right-angle crank 64 is further swung, the second two-way switch 49 is turned on when the radial direction rotating rod 8 reaches the end point of the second section of the first optical fiber 48, and the first and second sections of the first optical fiber 48 are lighted up with an arc length x₂The straight line segment of the second optical fiber 56 on the second inner cannula lamp 5 is sinx₂…, when the end point of the Nth first optical fiber 48 is reached, the Nth bidirectional switch 49 is turned on, and the first to Nth first optical fibers 48 are lighted with an arc length x_NOn the Nth inner tube-inserted lamp 5The straight line segment of the two optical fibers 56 is sinx_N。3]The right-angle crank 64 is continuously shaken anticlockwise, the radial rotating rod 8 enters the next half cycle of demonstration after passing through the 180-degree line of the excess angle disc 7, when the end point of the N + 1-th section of the first optical fiber 48 is reached, the N + 1-th bidirectional switch 49 is turned on, the N + 1-th section of the first optical fiber 48 and the first inner inserting tube lamp 5 enter the working state, and the arc length of the first optical fiber 48 is x_N+1The second optical fiber 56 is located at the lower side of the lighting straight line segment, which is marked as a negative value and has a size of x_N+1The crank handle 64 is further rocked until the 360 ° line of the protractor plate 7 is reached, and then the rotation is stopped, and the rotation is fixed by the bolt lock 814.

Fifthly, finishing the demonstration: 1] release the boltworks 814. 2] the right-angle crank 64 is rocked clockwise, the radial rotating rod 8 turns off the 2N, 2N-1, …, N +1, N, …,2 and 1 bidirectional switches 49 in sequence, the display lamps on the radial rotating rod are turned off in sequence, and finally the radial rotating rod 8 is fixed on the 0-degree line of the angle measuring disc 7. And 3, turning off the power switch 411, and returning the demonstration instrument to the initial state.

The utility model discloses a sinusoidal function definition demonstration and image synthesizer can expand the sinusoidal function relation of definition in the unit circle and become the sinusoidal curve on the rectangular coordinate system, converts the orthogonal relation in the rectangular coordinate system into by the circular arc on the unit circle and the non-orthogonal relation of half-chord promptly, synthesizes sinusoidal function y with light spot or light column for sinx's image, and operating procedure is:

firstly, instrument assembly, secondly, initial position adjustment and demonstration sine function definition are the same.

Thirdly, symbol setting: 1-6 is the same as that defined by a demonstration sine function, 7 takes a first scale 17 and a second scale 18 on the projection vertical plate 11 as a longitudinal axis and a transverse axis of a rectangular coordinate system xOy respectively, the central line of the right part of the transverse pallet 2 is consistent with the positive direction of the transverse axis, and the length unit is consistent with that on the radial rotating rod 8. The interval [0,2 pi ] on the transverse axis Ox is positioned in the amplitude of the first rectangular groove 26 on the transverse pallet 2, the tangential display plate 9 on the left side of the first rectangular groove 26 is called as a first one, the second one is on the right side, the circular truncated cone groove 96 at one end of the pipe plug 92 above the first tangential display plate 9 is called as a first one, the circular truncated cone groove 96 at the other end of the pipe plug 92 above the second tangential display plate 9 is called as an Nth one, the circular truncated cone groove 96 at one end of the pipe plug 92 above the second tangential display plate 9 is called as an N +1 th one, and.

And fourthly, demonstrating the definition of the sine function in the unit circle is the same as demonstrating the definition of the sine function.

Fifthly, expanding unit circle: 1] a first tangential exhibition board 9 is taken, a square pipe plug 92 is sleeved on a square pipe lock 33 of a first diameter chord plate 3 and is forcibly inserted into a first square hole 443 of the first circular arc exhibition board 4, so that the lower end of the circular arc exhibition board 4 and the tangential exhibition board 9 are integrated, a first straight rack 94 and a second straight rack 95 at the lower end of the tangential exhibition board 9 are sequentially and respectively pressed on a second circular arc rack 75 and the first circular arc rack 112 to be meshed with each other, and a first rotary lamp holder 43 is inserted into a first circular truncated cone groove 96. The other end of the tangential display board 9 is slowly pressed, the lower end of the circular arc display board 4 is separated from the square tube lock 33 along with the lower end of the tangential display board 9, the tangential display board 9 drives the circular arc display board 4 to move along the second circular arc rack 75 and the first circular arc rack 112 in a tangent form and then is unfolded into a straight board, the rotating lamp holder 43 on the circular arc display board 4 is pressed by the tangential display board 9, the rotating lamp holder 43 and the tube inserting lamp 5 inserted into the circular arc display board 4 automatically turn to be perpendicular to the circular arc display board 4, when the tangential display board 9 turns to be perpendicular to the 180-degree line of the angle measuring disc 7, the circular tube plug 932 of the sliding tube lock 93 is pushed to be sleeved on the circular tube lock 37 and inserted into the first circular hole 451, so that the other end of the circular arc display board 4 is integrated with the tangential display board 9, and the first circular arc display board 4, the first tangential display board 9 and the N tube inserting lamps 5 perpendicular to the first circular arc display. And 3, taking a second tangential display board 9, unfolding according to the construction method of the first lamp array, and integrally forming a second arc display board 4, the second tangential display board 9 and N inserted tube lamps 5 which are vertical to the second arc display board and the second tangential display board 9 into a second lamp array.

Sixthly, sinusoidal curve synthesis: 1] the first leftmost slide 28 in the second rectangular slot 27 in the transverse pallet 2 is moved to the position of the origin O of the coordinate system and the second left first slide 28 is moved to the position of the transverse axis pi of the coordinate system. 2, the first lamp array with the inserted tube lamp 5 facing upwards is placed in the interval [0, pi ] from the upper part of the first rectangular groove 26, two ends of the first lamp array are respectively fixed by a first two first sliding blocks 28, similarly, the second lamp array with the inserted tube lamp 5 facing downwards is placed in the interval [ pi, 2 pi ] from the lower part of the first rectangular groove 26, and two ends of the second lamp array are respectively fixed by the rest first sliding blocks 28. The light spot emitted by the green diode lamp 55 of 3]2N interpolator lamps 5 projected on the projection vertical plate 11 is a sinusoidal curve, i.e. an image with the function y being sinx.

Seventhly, finishing the demonstration: the power switch 411 is turned off and the demonstrator reverts to the initial state.

The utility model discloses sine function definition demonstration and image synthesizer's economic value and application prospect: with the technical progress and economic development, advanced equipment is required to improve the teaching effect and the environment beautifying level more and more, a sine function definition demonstration and image synthesizer which is simple to operate and convenient to use is urgently needed, only the aspects of higher education and middle education are achieved, the whole country shares tens of thousands of schools, numerous families and exhibition places are provided, the number is considerable, the market prospect is very wide, and good economic benefit and social benefit 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

1. Sine function definition demonstration and image synthesizer, its characterized in that: including riser support, horizontal pallet, diameter chord member, circular arc panel, interior tube inserting lamp, slewing mechanism, volume angle dish, radial bull stick, tangential panel, the middle part of riser support is arranged in to horizontal pallet, the left part of horizontal pallet is arranged respectively in to diameter chord member and slewing mechanism, volume angle dish and radial bull stick are arranged in on the slewing mechanism, two circular arc panels are the semicircle arcuation and arrange the above-mentioned and below of diameter chord member respectively in, interior tube inserting lamp is arranged in on the circumference that two circular arc panels enclose, the right part of horizontal pallet is arranged in to the tangential panel.

2. The sine function-defined presentation and image synthesizer of claim 1, wherein: the diameter chord plate comprises a second rectangular plate, a positioning sliding plate, a square tube lock, a square tube rod, a first round tube and a round tube lock, the second rectangular plate is sequentially provided with the square tube lock, a fourth rectangular groove and the round tube lock from right to left, the square tube lock comprises a transparent square tube, a first triangular plate, a third inserted bar, a second triangular plate, a second round tube and a second spring, the left side and the right side of the transparent square tube are provided with openings, the left side and the right side of each opening are respectively provided with the first triangular plate and the second triangular plate, the opposite sides of the first triangular plate and the second triangular plate are respectively provided with the second round tube and the third inserted bar, the third inserted bar extends into the second round tube, the outer circumferential surface of the second round tube is provided with the second spring, the middle of the second rectangular plate is provided with the fourth rectangular groove, the fourth rectangular groove is provided with the positioning sliding plate matched with the fourth rectangular groove, and the positioning sliding plate comprises the third rectangular plate, the positioning sliding plate, The spring type square tube spring support comprises a first circular ring piece, a first circular shaft rod, a fourth rectangular plate, a fifth rectangular plate and a first spring, wherein the first circular ring piece is arranged at the front end and the rear end of the surface of the third rectangular plate, the first circular shaft rod is sleeved in the first circular ring piece, the periphery of the first circular shaft rod is provided with the fourth rectangular plate and the fifth rectangular plate which are perpendicular to the first circular shaft rod, the first spring is an arc spring sleeve arranged on the first circular shaft rod, the edge of the third rectangular plate is provided with an elastic lock, and the left side surface and the right side surface of the second rectangular plate are respectively provided with a square tube rod and a first circular tube.