CN2223694Y - Circular curve-drawing instrument - Google Patents

Circular curve-drawing instrument Download PDF

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Publication number
CN2223694Y
CN2223694Y CN 95242964 CN95242964U CN2223694Y CN 2223694 Y CN2223694 Y CN 2223694Y CN 95242964 CN95242964 CN 95242964 CN 95242964 U CN95242964 U CN 95242964U CN 2223694 Y CN2223694 Y CN 2223694Y
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CN
China
Prior art keywords
circle
circular
pin
instrument
circular hole
Prior art date
Application number
CN 95242964
Other languages
Chinese (zh)
Inventor
刘顺和
Original Assignee
刘顺和
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 刘顺和 filed Critical 刘顺和
Priority to CN 95242964 priority Critical patent/CN2223694Y/en
Application granted granted Critical
Publication of CN2223694Y publication Critical patent/CN2223694Y/en

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Abstract

The utility model discloses a perspective gauge which can draw circles and ellipses, which comprises a central axle support bracket, a perspective circle, a left drawing foot, a right drawing foot, and a V-shaped frame clamp, wherein, the left drawing foot and the right drawing foot are respectively arranged on the left and the right sides of the central axle support bracket. Because the perspective circle move up and down on the intermediate section of the central axle support bracket, and the perspective circle is parallel or sloping to the drawing paper surface, circles or ellipses of different sizes can be drawn.

Description

Circular curve-drawing instrument
The utility model relates to the drawing instrument of picture circle, especially a kind ofly comes positive circle of picture and oval-shaped Circular curve-drawing instrument by having an X-rayed round perspective.
In the prior art, the oval instrument that does not still have standard of drawing a picture, compasses can only be drawn positive circle, can not draw ellipse.
Goal of the invention of the present utility model is to overcome existing above-mentioned deficiency in the prior art, novel can draw positive circle thereby provide a kind of, also can draw oval-shaped Circular curve-drawing instrument.
Goal of the invention of the present utility model is realized by following technical proposal.
Circular curve-drawing instrument of the present utility model, comprise that pin is drawn on bottom bracket, perspective circle, a left side, pin, V-type frame folder five big main members are drawn in the right side, on the axis of V-type frame folder, bottom bracket is installed, the support of three tripartite confrontations makes bottom bracket perpendicular to the drawing paper, and the lower end of bottom bracket dress center of circle pointer is so that aim at the drawing center of circle of paper.The left end that the pin oblique cutting is contained in V-type frame folder is drawn on a left side, and right picture pin oblique cutting is contained in the right-hand member of V-type frame folder.At the stage casing of bottom bracket square shaft dress perspective circle, a loose collar is respectively adorned in the position of outer toroid girth two five equilibriums of perspective circle, and pin is drawn on a left side and the right pin of drawing passes from these two loose collars respectively, and two picture pin are worked respectively.The oblique upper of the upper end of bottom bracket and V-type frame folder is respectively adorned a dactylostyle.
When what need picture is general positive circle or when oval, takes off the right pin of drawing, and uses a left side to draw pin.Positive circle or oval-shaped radius length according to required picture, the perspective circle is slided up and down and the position of definite perspective circle on square shaft on the square shaft of bottom bracket, make the perspective disk parallel or favour the drawing paper simultaneously, center of circle pointer with the bottom bracket lower end is found the drawing center of circle accurately, the finger of a hand is pressed the bottom bracket dactylostyle, and the another hand is rotatably installed in the dactylostyle of V-type frame folder oblique upper.The V-type frame is carried a moving left side secretly and is drawn pin and rotate thereupon since about draw in the pin pipe the suitable flexible spring of tool all be housed, so the picture pin that rotates can not leave paper.After a left side was drawn pin ring bottom bracket and rotated a week, the positive circle or the ellipse of required picture also just were drawn as, and were bigger or less positive circles or when oval when what need picture, took off a left side and drew pin, used the right pin of drawing.Positive circle or oval-shaped radius length according to required picture, adjust the position of perspective circle on the square shaft of bottom bracket, when the perspective circle can not solve required radius length, can adjust the right convergent-divergent of drawing on the pin and draw pin, make convergent-divergent draw the tip of the brushstyle of a writing or painting of pin near center of circle pointer or away from center of circle pointer, identical when remaining operation is drawn pin with a use left side, bigger or the less positive circle or the ellipse of required like this picture also just are drawn as.The principles of science of the utility model utilization is: one positive circular when the visual angle be positive circle during perpendicular to the drawing center of circle, be ellipse when the visual angle favours the drawing center of circle.
The utility model compared with prior art has following advantage:
1, this Circular curve-drawing instrument such as can draw at the positive circle of radius, also can draw the ellipse that becomes radius;
2, this Circular curve-drawing instrument adopts the new technology of bottom bracket, during drawing, bottom bracket is perpendicular to paper, a hand is pressed the dactylostyle of bottom bracket, the another hand is rotatably installed in the dactylostyle on the V-type frame folder, because causing center of circle pointer to break away from the drawing center of circle, bottom bracket steadily of centre of gravity, the center of gravity that can not change the center of circle because of rotation scratch paper.
Description of drawings is as follows:
Fig. 1 is the support element upward view of middle column holder of the present utility model
Fig. 2 is a perspective circle member vertical view of the present utility model
Fig. 3 is a general structure schematic diagram of the present utility model
Fig. 4 is a V-type frame folder member schematic diagram of the present utility model
Fig. 5 is a center of circle of the present utility model pointer component inside structure sectional side elevation
The utility model will be described in further detail in conjunction with the accompanying drawings:
Circular curve-drawing instrument of the present utility model comprises that pin is drawn on bottom bracket, perspective circle, a left side, pin, V-type frame folder five big main members are drawn in the right side.Bottom bracket is made up of the support element of dactylostyle 31, last circular shaft 23, square shaft 21, following circular shaft 20 and Fig. 1.Dactylostyle 31 connects goes up circular shaft 23, and the external diameter of last circular shaft 23 is slightly less than the internal diameter of circular hole 45, is slightly less than the spacing of rivet 26 and rivet 27 simultaneously.Last circular shaft 23 passes circular hole 45, passes the gap between rivet 26 and the rivet 27 again, exposes from the lower end of V-type frame folder, be connected with square shaft 21, square shaft 21 passes square hole 5 and connects circular shaft 20 down, and the lower end diameter of following circular shaft 20 is smaller, on screw thread is arranged, and be connected with center of circle pointer 46.The support 2 of three tripartite confrontations is connected frame and overlaps third-class office on the 51 outer wall cross-sectional periphery, and overlaps 51 column outer walls with frame and become downwards 30 to spend angles, and the bottom of three supports 2 is equipped with three balls 3.Frame cover 51 is gone to the bottom and is had the circular hole 52 of the lower end external diameter that is slightly larger than down circular shaft, upwards has ball annular groove 49 around the ring circular hole 52, adorns the ball of suitable diameter at ball annular groove 49.The circular hole 52 that the frame cover 51 of ball will be housed is then aimed at the lower end of circular shaft 20 down and cover up, loads onto center of circle pointer 46 in circular shaft 20 lower ends down, and the maximum gauge of center of circle pointer 46 upper ends is slightly less than down the lower end diameter of circular shaft 20.Circular hole 1 internal diameter of taper sheath 47 is slightly larger than down the external diameter of circular shaft 20 lower ends, circular hole 1 inwall of taper sheath 47 has the screw thread that interlocks with following circular shaft 20 lower end outer walls, cross section ring circular hole 1 in taper sheath 47 upper ends has ball annular groove 48, adorn the ball of suitable diameter at ball annular groove 48, the circular hole 1 that the taper sheath 47 of ball will be housed is then aimed at center of circle pointer 46 and is up rotated to ball and contacts frame cover 51 and go to the bottom.Pack into outer wall and the frame of following circular shaft 50 parts of frame cover 51 of following circular shaft 20 overlaps very accurate that 51 inwall will coincide, should be flexible, can not rock again.The support 2 of such three tripartite confrontations can encircle the random rotation of radiuses such as center of circle pointer 46 works.A left side is drawn pin and is made up of members such as holding screw 39, mini diameter tube 37, mini diameter tube 36, spring 35, taper sheath 34, the plumbous hearts 33.The position corresponding that the upper end oblique cutting of pipe box 38 advances V-type frame folder with circular hole 43, upper end and circular hole 43 corresponding points at pipe box 38 are drilled with the circular hole that is slightly larger than circular hole 43 diameters, screw 29 pierces into circular hole 43, and penetrate the circular hole of pipe box 38 upper ends, pass the circular hole of the another side of the V-type frame folder corresponding with circular hole 43, and by fixed by nut, like this, the lower end of pipe box 38 can be encircled screw 29 and stir up and down.With mini diameter tube 37 pipe box 38 of packing into, and fixing by holding screw 39.The external diameter of mini diameter tube 37 is slightly less than the internal diameter of mini diameter tube 36, the less spring of elasticity 35 is housed in mini diameter tube 36, mini diameter tube 37 passes the circular hole of loose collar 4, inject mini diameter tube 36, and be connected as snap close with mini diameter tube 36 connecting parts at mini diameter tube 37, mini diameter tube 37 can be twitched in mini diameter tube 36 back and forth, but can not extract out fully.There is screw thread mini diameter tube 36 lower ends, and a little opening is arranged, and load onto the plumbous heart 33 on opening.Taper sheath 34 inwalls have the screw thread that interlocks with mini diameter tube 36 lower ends.The end that taper sheath 34 external diameters are big is aimed at the plumbous heart 33 and up rotation, is fixed until the plumbous heart 33.Picture pin in a left side has just been installed like this.The right pin of drawing is made up of members such as holding screw 25, pipe box 24, mini diameter tube 22, mini diameter tube 19, spring 53, card cap 18 and convergent-divergent picture pin.The position corresponding that pipe box 24 upper end oblique cuttings advance V-type frame folder with circular hole 42.Pipe box 24 is drilled with the circular hole that is slightly larger than circular hole 42 diameters with circular hole 42 corresponding points.Screw 28 pierces into circular hole 42, and penetrates the circular hole of pipe box 24 upper ends, passes the circular hole of the another side of the V-type frame folder corresponding with circular hole 42.And by fixed by nut.The lower end of pipe box 24 can be encircled screw 28 and stirs up and down like this.With mini diameter tube 22 pipe box 24 of packing into, and fixing by holding screw 25.The external diameter of mini diameter tube 22 is slightly less than the internal diameter of mini diameter tube 19, and the less spring of elasticity 53 is housed in mini diameter tube 19.Mini diameter tube 22 passes the circular hole of loose collar 10, injects mini diameter tube 19, and is connected as snap close with mini diameter tube 19 connecting parts at mini diameter tube 22, mini diameter tube 22 can be twitched in mini diameter tube 19 back and forth, but can not extract out fully.Mini diameter tube 19 lower ends are equipped with card cap 18, and the effect of card cap 18 is when screw 12 unscrews, and pin is unlikely splits away off from mini diameter tube 19 for whole convergent-divergent picture.Screw 12 is positioned on the position near card cap 18, mini diameter tube 19 passes from chute 13 from top to bottom, sets up card cap 18 again, screws on screw 12, when screw 12 unscrewed, whole convergent-divergent was drawn pin and just can be done near center of circle pointer 46 and slidably reciprocating away from center of circle pointer 46 by chute 13 and chute 14.According to the circular or oval-shaped radius length of required picture, and being drawn pin, convergent-divergent slides in position, screw screw 12.The embodiment convergent-divergent of Fig. 3 is drawn the plumbous heart 15 of pin in the outer end of mini diameter tube 19, the circle that this suitable picture radius is bigger or oval.The plumbous heart 15 is stuck between the card 17, and is tightened by screw 16.When less circular or oval of need picture radius, if drawing pin, a left side can't reach requirement, just can only use right picture pin.At this moment, must unscrew screw 12, then convergent-divergent being drawn pin is that 180 degree rotations are done in the center of circle with mini diameter tube 19, makes the plumbous heart 15 the inner at mini diameter tube 19.Whole convergent-divergent is drawn pin and is done near center of circle pointer 46 and the slip of leaving center of circle pointer 46 by chute 13 and chute 14, circular or oval-shaped radius length according to the need picture, slide in position and convergent-divergent is drawn pin, screw screw 12, the circle that this suitable picture radius is less or oval.The perspective circle of Fig. 2 slightly amplifies than the perspective among Fig. 3 embodiment is round.The perspective circle is made up of members such as loose collar 4, loose collar 10, semilune frame 6, screw 11, interior annulus 7, outer toroid 9 and balls 8.Interior annulus 7 and semilune frame 6 are connected as a single entity, the center of circle of interior annulus 7 has square hole 5, and the length of side of square hole 5 is slightly larger than the square shaft 21 cross section length of sides, and makes the perspective circle can optionally favour the drawing paper, can on square shaft 21, slide up and down, be tightened by screw 11 then.Screw 11 front ends are equipped with rubber blanket, and when screw 11 screwed, rubber blanket withstood square shaft, and whole perspective circle just has been fixed on the square shaft.
Dress ball 8 between interior annulus 7 and outer toroid 9, outer toroid 9 can arbitrarily be encircled the center of circle and rotate.Loose collar 4 and loose collar 10 are installed in the position of outer toroid girth 3 five equilibriums, loose collar 4 and loose collar 10 all are made up of two rings respectively, two ring points of tangency rivets, and two rings can arbitrarily rotate mutually, one of them ring set is on outer toroid 9, and another ring then is used for wearing mini diameter tube 37 or mini diameter tube 22.Dactylostyle 32 oblique cuttings are in the corresponding position of the oblique upper of V-type frame folder and circular hole 44, and are tightened by screw 30.When using the utility model to draw general positive circle or ellipse, unscrew screw 25, take off the right pin of drawing, use left side picture pin.Circular or oval-shaped radius length according to required picture unscrews screw 11, the perspective circle is done the parallel of drawing slided up and down on square shaft 21, with selected required orbicular radius length or oval-shaped maximum radius length.The position of perspective circle on square shaft is just definite.If draw positive circle, screw screw 11, just can operate.If draw ellipse, the perspective circle must be favoured the drawing paper, with selected least radius length, screw screw 11.Then, center of circle pointer 46 with the bottom bracket lower end is found the drawing center of circle accurately, and the finger of a hand is pressed the dactylostyle 31 of bottom bracket, and the another hand is rotatably installed in the dactylostyle 32 on the V-type frame folder, after dactylostyle 32 rotated a circle around bottom bracket, the positive circle or the ellipse of required picture also just were drawn as.If when drawing less or bigger positive circle or oblong, unscrew screw 39, take off a left side and draw pin, the right picture of use pin, the operation of its perspective circle is identical with use left side picture pin.The just right convergent-divergent of drawing pin is drawn pin can draw bigger or less circle or oval.Unscrew screw 12, make whole convergent-divergent draw pin and slide along chute 13 and chute 14, make the plumbous heart 15 near or leave center of circle pointer 46 with selected required radius length.When the plumbous heart 15 is during in mini diameter tube 19 outer ends, can draw circular or oval than long radius.When the plumbous heart 15 is between mini diameter tube 19 and center of circle pointer 46 time, can draw the circular or oval of small radii.After the selected required radius length, it is parallel with the drawing paper to make convergent-divergent draw pin, vertical with bottom bracket, screws screw 12, can be by using the identical method of left foot to operate.It is noted that because pin built-in spring 35 is drawn on a left side, the right pin built-in spring 53 of drawing, so the utility model is when non-operating state, the angle of bottom bracket and line (line of the line of the center of circle pointer 46 and the plumbous heart 33 or center of circle pointer 46 and the plumbous heart 15) is greater than 90 degree.So when measuring required radius length, must make the angle of bottom bracket and line (line of the line of the center of circle pointer 46 and the plumbous heart 33 or center of circle pointer 46 and the plumbous heart 15) equal 90 degree.Concrete operations be with bottom bracket perpendicular to the drawing paper, make the plumbous heart 33 or the plumbous heart 15 and center of circle pointer 46 be in same plane, measure required radius length then.

Claims (10)

1, a kind of Circular curve-drawing instrument, comprise bottom bracket, the perspective circle, pin is drawn on a left side, the right pin of drawing, V-type frame folder five big main members, it is characterized in that: on the axis of V-type frame folder, bottom bracket is installed, the support of three tripartite confrontations makes bottom bracket perpendicular to the drawing paper, the lower end dress center of circle pointer of bottom bracket is so that aim at the drawing center of circle of paper, the left end that the pin oblique cutting is contained in V-type frame folder is drawn on a left side, the right pin oblique cutting of drawing is contained in the right-hand member that the V-type frame presss from both sides, at bottom bracket stage casing square shaft dress perspective circle, a loose collar is respectively adorned in the position of outer toroid girth two five equilibriums of perspective circle, pin is drawn on a left side and the right pin of drawing passes from these two loose collars respectively, the oblique upper of the upper end of bottom bracket and V-type frame folder is respectively adorned a dactylostyle, the perspective circle can slide up and down on the square shaft of bottom bracket, the perspective disk can be parallel or be favoured drawing paper, a left side, the right picture in the pin pipe all is equipped with the suitable flexible spring of tool.
2, Circular curve-drawing instrument as claimed in claim 1, it is characterized in that: go up circular shaft (23) and pass circular hole (45), pass the gap between rivet (26) and the rivet (27) again, expose from the lower end of V-type frame folder, be connected with square shaft (21), square shaft (21) passes square hole (5) and connects circular shaft (20) down, and the lower end diameter of following circular shaft (20) is smaller, on screw thread is arranged, and be connected with center of circle pointer (46).
3, Circular curve-drawing instrument as claimed in claim 1, it is characterized in that: the support of three tripartite confrontations (2) is connected the long third-class office of frame cover (51) outer wall cross-sectional periphery, and with frame cover (51) column outer wall become downwards 30 the degree angles, the bottom of three supports (2) is equipped with three balls (3).
4, Circular curve-drawing instrument as claimed in claim 1 is characterized in that: frame cover (51) is gone to the bottom and is had circular hole (52), upwards has ball annular groove (49) around the ring circular hole (52).
5, Circular curve-drawing instrument as claimed in claim 1 is characterized in that: circular hole (1) inwall of taper sheath (47) has the screw thread that interlocks with following circular shaft (20) lower end outer wall, and the cross section ring circular hole (1) in taper sheath (47) upper end has ball annular groove (48).
6, Circular curve-drawing instrument as claimed in claim 1, it is characterized in that: the upper end oblique cutting of pipe box (38) advance V-type frame folder with the corresponding position of circular hole (43), upper end and circular hole (43) corresponding points at pipe box (38) are drilled with circular hole, screw (29) passes circular hole (43), and penetrate the circular hole of pipe box (38) upper end, pass the circular hole of the another side of the V-type frame folder corresponding, and by fixed by nut, the lower end of pipe box (38) can be encircled screw (29) and stir up and down with circular hole (43).
7, Circular curve-drawing instrument as claimed in claim 1, it is characterized in that: screw (12) is positioned on the position near card cap (18), mini diameter tube (19) passes from chute (13) from top to bottom, set up card cap (18) again, screw on screw (12), whole convergent-divergent is drawn pin and can be done near center of circle pointer (46) and slidably reciprocating away from center of circle pointer (46) by chute (13) and chute (14).
8, Circular curve-drawing instrument as claimed in claim 1, it is characterized in that: interior annulus (7) and semilune frame (6) are linked as an integral body, and the center of circle of interior annulus (7) has square hole (5), and screw (11) front end is equipped with rubber blanket, rubber blanket withstands square shaft, and the perspective circle is fixed on the square shaft.
9, Circular curve-drawing instrument as claimed in claim 1 is characterized in that: between interior annulus (7) and the outer toroid (9) ball (8) is housed, outer toroid (9) can arbitrarily be encircled the center of circle and rotate.
10, Circular curve-drawing instrument as claimed in claim 1, it is characterized in that: loose collar (4) and movable (10) all are made up of two rings respectively, two ring points of tangency, use rivet, two rings can arbitrarily rotate mutually, one of them ring set is on outer toroid (9), and another ring is worn mini diameter tube (37) or mini diameter tube (22).
CN 95242964 1995-03-29 1995-03-29 Circular curve-drawing instrument CN2223694Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95242964 CN2223694Y (en) 1995-03-29 1995-03-29 Circular curve-drawing instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95242964 CN2223694Y (en) 1995-03-29 1995-03-29 Circular curve-drawing instrument

Publications (1)

Publication Number Publication Date
CN2223694Y true CN2223694Y (en) 1996-04-03

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ID=33883809

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 95242964 CN2223694Y (en) 1995-03-29 1995-03-29 Circular curve-drawing instrument

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Country Link
CN (1) CN2223694Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102673272A (en) * 2012-05-11 2012-09-19 济南大学 High-precision elliptic trammel
CN107487115A (en) * 2017-08-21 2017-12-19 王仁锋 A kind of cyclograph
CN109532289A (en) * 2018-11-29 2019-03-29 邵云湘 A kind of ellipsograph with three foot

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102673272A (en) * 2012-05-11 2012-09-19 济南大学 High-precision elliptic trammel
CN102673272B (en) * 2012-05-11 2015-01-14 济南大学 High-precision elliptic trammel
CN107487115A (en) * 2017-08-21 2017-12-19 王仁锋 A kind of cyclograph
CN107487115B (en) * 2017-08-21 2019-01-29 王仁锋 A kind of cyclograph
CN109532289A (en) * 2018-11-29 2019-03-29 邵云湘 A kind of ellipsograph with three foot

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