CN206012128U

CN206012128U - Parabola drawing instrument

Info

Publication number: CN206012128U
Application number: CN201620584498.5U
Authority: CN
Inventors: 刘洪程
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-16
Filing date: 2016-06-16
Publication date: 2017-03-15
Anticipated expiration: 2026-06-16

Abstract

The utility model discloses a kind of parabola drawing instrument, including longitudinal ruler, horizontal chi, locating bar and connecting line, wherein, the horizontal chi is rectangular with longitudinal ruler, laterally one end of chi is slidably connected on longitudinal ruler, laterally the other end end of chi is provided with the first fixed part, and one end of the connecting line is fixedly connected on the first fixed part, and the other end is fixed on locating bar.The parabola drawing instrument that the present embodiment is provided, improves teaching efficiency, solves teaching difficulty；Truly can intuitively show to student, can also allow student to operate in person, more deep than multimedia impression.

Description

Parabola drawing instrument

Technical field

This utility model is related to write or instrument of painting technical field, more particularly to a kind of parabola drawing instrument.

Background technology

Parabola is referred in plane to a fixed point and the track of the equidistant point of boning out.Draw parabola When, how using " trace-point method ", also have and parabola, or directly Freehandhand-drawing are drawn using computer simulation, but " look for a trace Parabola is drawn in method " and direct Freehandhand-drawing, time-consuming and inaccurate；Parabola being drawn with computer simulation, though can simulate Go out parabola, but its use range has significant limitation.Particularly when teacher is in teaching, by the method powder of textbook Pen and cord are relatively difficult on blackboard.One is to use nail directly as focus, and two is ruler and set square needs Special messenger according to, three is that to require when chalk is drawn upwards that chalk is close to set square cord exceptionally straight, at the same set square to also be close to ruler to Upper movement, these operations are all not easily accomplished.What therefore teacher typically took is with multimedia animation or picture presentation, lacks The image of few classroom practice, vividness.

Utility model content

This utility model provides a kind of parabola drawing instrument, tired to solve prior art teaching drafting parabola operation Difficult, accuracy is low, practicalness is poor and there is the technical problem of significant limitations.

In order to solve the above problems, the utility model discloses a kind of parabola drawing instrument, including longitudinal ruler, laterally Chi, locating bar and connecting line, wherein, with longitudinal ruler at right angles, one end of horizontal chi is slidably connected at longitudinal ruler to the horizontal chi On, the other end end of horizontal chi is provided with the first fixed part, and one end of the connecting line is fixedly connected on the first fixed part, separately One end is fixed on locating bar.

Preferably, first fixed part is circular hole, is arranged on the nearly locating bar side in end.

Preferably, first fixed part is scallop hole, above and below connection end.

Preferably, chi body length is provided with convex portion on the longitudinal ruler, the lateral length of the convex portion crowning is more than Convex portion and the lateral length of longitudinal ruler chi surface side faying face；One end end that the horizontal chi is connected with longitudinal ruler be provided with convex The recess that portion matches, the recess are linked on convex portion.

Preferably, the convex portion longitudinal direction two end is provided with dismountable end card division, and horizontal chi is slided into along longitudinal ruler Stop sliding during the card division of end.

Preferably, chi body length is provided with more than one installing hole on the longitudinal ruler, installs on installing hole and fix Sucker.

Preferably, dismountable sucker base that the locating bar is included barred body and is connected with one side end of barred body, described The second fixed part for being fixedly connected line is provided with barred body.

Preferably, scale is provided with the horizontal chi and longitudinal ruler.

Preferably, scale is provided with the connecting line.

Preferably, the set portion that transversely chi slides laterally is additionally provided with the horizontal chi, is provided with and wears in a set portion Hole, the connecting line are connected to the second fixed part of locating bar from after the perforation through a set portion that the first fixed part is in horizontal.

Beneficial effect：

1. teaching efficiency is improve, solve teaching difficulty.2. truly can intuitively show to student, can also allow student Operate in person, more deep than multimedia impression, meet " learning by doing, do in " modern teaching theory.3. allow student to experience With recognize how to think hard solving practical difficulty, improve learning interest, the favourable innovative study for improving student.

Description of the drawings

Overall schematics of the Fig. 1 for the embodiment 1 of this utility model parabola drawing instrument.

Structural representations of the Fig. 2 for the horizontal chi and longitudinal ruler of the parabola drawing instrument of Fig. 1.

Overall schematics of the Fig. 3 for the embodiment 2 of this utility model parabola drawing instrument.

Locating bar schematic diagrams of the Fig. 4 for this utility model parabola drawing instrument.

In figure：1- longitudinal rulers, 101- convex portions, 1011- crownings, 1012- faying faces, 102- ends card division, 103- installing holes, The horizontal chis of 2-, 201- recesses, the first fixed parts of 202-, 3- locating bars, 301- barred bodies, 302- sucker bases, 303- second are fixed Portion, 4- connecting lines.

Specific embodiment

Below with reference to accompanying drawing and in conjunction with the embodiments describing this utility model in detail.It should be noted that not rushing In the case of prominent, the feature in embodiment and embodiment in this utility model can be mutually combined.

Embodiment 1

As shown in Figure 1 and Figure 4, a kind of parabola drawing instrument, including longitudinal ruler 1, horizontal chi 2, locating bar 3 and connecting line 4, wherein, with longitudinal ruler 1 at right angles, one end of horizontal chi 2 is slidably connected on longitudinal ruler 1 the horizontal chi 2, horizontal chi 2 Other end end is provided with the first fixed part 202, and one end of the connecting line 4 is fixedly connected on the first fixed part 202, the other end It is fixed on locating bar 3.When parabola is drawn using the present embodiment drawing instrument, place 1 He of longitudinal ruler on plotting planes Locating bar 3, the plotting planes such as blackboard, blank etc., locating bar 3 fall on longitudinal ruler 1 to the vertical join line of longitudinal ruler 1, press Drawing needs the first fixed part 202 for adjusting 4 length of connecting line and being fixedly connected on its one end on horizontal chi 2, and the other end is solid Surely the second fixed part 303 being connected on locating bar 3, by drawing pencil against connecting line 4 and horizontal chi 2, keeps connecting line 4 all the time Exceptionally straight, drive horizontal chi 2 to slide along longitudinal ruler 1, you can to draw figure of the required parabola in one quadrant of rectangular coordinate system. Repeat aforesaid operations in another quadrant and can draw complete parabola.Drawing efficiency height is cut accurately, processing ease and Displaying is vivid, beneficial to teaching.

In the present embodiment, first fixed part, 202 preferred circular hole, or other shapes may pass through connecting line and consolidate Fixed hole, is arranged on nearly 3 side of locating bar in end.That is, locating bar 3 is positioned at below horizontal chi 2 as parabolical focus, circular hole It is arranged on below 2 end of horizontal chi.Connecting line 4 is fixed through circular hole, is such as tied up on horizontal chi 2, and horizontal chi 2 is along longitudinal ruler 1 moves up drafting parabola.

As shown in Fig. 2 in the present embodiment, being additionally provided with convex portion 101, the convex portion along chi body length on the longitudinal ruler 1 101 section is trapezoidal, and horizontal chi 2 is correspondingly arranged on the recess 201 matched with convex portion 101.The crowning 1011 of convex portion 101 Lateral length more than convex portion 101 and longitudinal ruler chi surface side faying face 1012 lateral length；The horizontal chi 2 and longitudinal ruler 1 One end end of connection is provided with the recess matched with convex portion 101, and the recess 201 is linked on convex portion 101, i.e., described convex The section in portion 101 is trapezoidal, and upper bottom surface length is more than bottom surface length, and the section of the recess 201 is trapezoidal.So that horizontal chi Freely move along longitudinal ruler, flexible operation.

Optionally, the convex portion 101 for otherwise arranging on longitudinal ruler 1 can be also arranged with the recess 201 of setting on horizontal chi 2, i.e., The recess arranged on longitudinal ruler 1, arranges matched convex portion on horizontal chi 2.Optionally, the section of convex portion described above is also Can be in inverse-T-shaped.

Optionally, 101 end of longitudinal direction two of the convex portion is provided with end card division 102, and horizontal chi 2 is slided into along longitudinal ruler 1 Stop sliding during the card division 102 of end.By arranging end card division 102, it is to avoid during operation, horizontal chi 2 gets off from landing on longitudinal ruler 1.

Optionally, chi body length is provided with more than one installing hole 103 on the longitudinal ruler 1, pacifies on installing hole 103 Dress fixing sucking disk.Longitudinal ruler 1 is fixed on plotting planes by arranging installing hole 103 and installing fixing sucking disk thereon.

Optionally, dismountable sucker bottom that the locating bar 3 is included barred body 301 and is connected with 301 1 side end of barred body Seat 302, is provided with the second fixed part 303 for being fixedly connected line 4 on the barred body 301.Locating bar 3 passes through dismountable sucker bottom Seat 302 is fixed on plotting planes, is easy to use, is easy for installation and removal, is easy to position and shifts.

Optionally, scale is provided with the horizontal chi 2 and longitudinal ruler 1.Scale is provided with the connecting line 4.It is easy to Measurement.

Embodiment 2

In the present embodiment, as shown in figure 3, the first fixed part 202 on horizontal chi 2 is scallop hole, the top of end is connected And lower section, the top is B points position, and the lower section is A points position.When connecting line 4 is fixed on A points, enter as described in embodiment 1 Row is drawn.

When horizontal chi 2 is moved to lower end along 1 upper end of longitudinal ruler, locating bar 3 is arranged on horizontal chi 2 as its focal point Connecting line 4 is fixed on B points position by Fang Shi.The present embodiment can two-way drafting parabola.

Identical with described in embodiment 1 in place of other non-specified otherwises, will not be described here.

Embodiment 3

In the present embodiment, on the basis of embodiment 1, it is additionally provided with nearly 3 side of locating bar below the horizontal chi 2 The set portion that transversely chi 2 slides laterally, set are provided with perforation in a portion, and the connecting line 4 is from 202 one-tenth levels of the first fixed part The perforation through a set portion after be connected to the second fixed part of locating bar 3.A set portion is detachable, places and paint in a set portion Figure pen so that drawing pencil is all the time against connecting line 4 and laterally chi movement drawing so that drawing course is easier to operate to, drawing matter Amount is higher.

Embodiment 4

In the present embodiment, on the basis of embodiment 2, both sides are provided with transversely above and below the horizontal chi 2 The set portion that chi 2 slides laterally, is provided with perforation in a set portion, the connecting line 4 is passed through from the first fixed part 202 in horizontal The second fixed part of locating bar 3 is connected to after the perforation in a set portion.A set portion is detachable, and set places drawing pencil in a portion, So that drawing pencil is all the time against connecting line 4 and the laterally movement of chi 3 drawing so that drawing course is easier to operate to, and drawing quality is more High.One set portion also can be only set, be located at below horizontal chi 2 when locating bar 3, horizontal chi 2 is moved from bottom to top along longitudinal ruler 1 When, 4 one end of connecting line is fixedly connected at A points, and a set portion is below horizontal chi；When locating bar 3 is located on horizontal chi 2 Side, horizontal chi 2 along longitudinal ruler 1 move from the top down when, 4 one end of connecting line is fixedly connected at B points, and a set portion is installed in laterally Above chi 2.

In the present embodiment in addition to specified otherwise, other are consistent with described in embodiment 2, will not be described here.

Finally it should be noted that：Above example only in order to the technical solution of the utility model to be described, rather than a limitation； Although being described in detail to this utility model with reference to the foregoing embodiments, it will be understood by those within the art that： Which still can be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc. With replacement；And these modifications or replacement, do not make the essence of appropriate technical solution depart from each embodiment technology of this utility model The spirit and scope of scheme.

Claims

1. a kind of parabola drawing instrument, it is characterised in that including longitudinal ruler, horizontal chi, locating bar and connecting line, wherein, institute State horizontal chi with longitudinal ruler at right angles, one end of horizontal chi is slidably connected on longitudinal ruler, the other end end of horizontal chi is arranged The one end for having the first fixed part, the connecting line is fixedly connected on the first fixed part, and the other end is fixed on locating bar.

2. parabola drawing instrument as claimed in claim 1, it is characterised in that first fixed part is circular hole, is arranged on The nearly locating bar side in end.

3. parabola drawing instrument as claimed in claim 1, it is characterised in that first fixed part is scallop hole, connection Above and below end.

4. parabola drawing instrument as claimed in claim 1, it is characterised in that be provided with along chi body length on the longitudinal ruler Convex portion, the lateral length of the crowning of the convex portion is more than convex portion and the lateral length of longitudinal ruler chi surface side faying face；The horizontal stroke The recess matched with convex portion is provided with longitudinal ruler to one end end that chi is connected, and the recess is linked on convex portion.

5. parabola drawing instrument as claimed in claim 4, it is characterised in that the convex portion longitudinal direction two ends are provided with can The end card division of dismounting, horizontal chi slide into along longitudinal ruler and stop sliding when holding card division.

6. parabola drawing instrument as claimed in claim 1, it is characterised in that be provided with along chi body length on the longitudinal ruler More than one installing hole, installs fixing sucking disk on installing hole.

7. parabola drawing instrument as claimed in claim 1, it is characterised in that the locating bar include barred body and with barred body one Dismountable sucker base of side end connection, is provided with the second fixed part for being fixedly connected line on the barred body.

8. parabola drawing instrument as claimed in claim 1, it is characterised in that be provided with quarter on the horizontal chi and longitudinal ruler Degree.

9. parabola drawing instrument as claimed in claim 1, it is characterised in that be provided with scale on the connecting line.

10. the parabola drawing instrument as described in claim 1-9 is arbitrary, it is characterised in that be additionally provided with the horizontal chi The set portion that transversely chi slides laterally, is provided with perforation in a set portion, the connecting line is worn from the first fixed part in horizontal The second fixed part of locating bar is connected to after the perforation for crossing a set portion.