CN208730658U - A kind of drawing and measuring instrument - Google Patents

Abstract

The utility model discloses a kind of drawing and measuring instruments, will be used for drafting and measurement angle, the parameter of straight line, n degree, mainly use in school.The drawing and measuring instrument are made for plate, including angle index, the slot with straight line side, and the center that the line of the slot passes through angle index, wherein a line is marked by 0 ° of angle index, it is characterized by: the straight line side of the slot originates in the center of angle index, and it is positioned to 30 ° to 90 ° of angle each other.The plate can be formed as semicircle, there is the rectangle adjacent with its diameter, or be formed as rectangle or right angled triangle etc..The slot can be open or close.Measurement and drafting angle and figure will simply, quickly and precisely.Angle can be drawn in the case where not picking up writing instrument from paper and under no any the case where tentatively marking desired angle value.

Description

A kind of drawing and measuring instrument

Technical field

The utility model relates to a kind of drawing and measuring instrument, the drawing and measuring instrument will be used to drawing and measuring angle The parameter of degree, straight line, n degree, and can be used for not needing high-precision geometrical construction, mainly used in school.

Background technique

Ruler and the drawing of protractor can be used as simultaneously and the range of measuring instrument is very wide.This drawing and measuring instrument It needs the disadvantage is that, drawing angle and geometric figure with desired angle value using drawing and measuring instrument and writing instrument Device is largely operated, this to draw extremely complex.Which increase drawing the time it takes, and drafting accuracy reduces.

(the certificate of invention SU72619A1, Int.Cl.B43L 13/00 of author, is disclosed in known one group of square 00.00.1948), its side is made 45 ° and 90 ° of angle, and has template and protractor, wherein the bottom of the template and protractor Portion's shape is angled 5,10,15,30,40,60 and 120 ° of side.The disadvantage that square is arranged is not grasp largely It is limited that the number of angles drawn is easy in the case where work.Remaining angle that do not list above can be by protractor and with general Logical mode is drawn.

It it is known that (patent of invention RU2060905C1, Int.Cl.B43L7/00, are disclosed in one group of square 27.05.1996), it is manufactured into the v-shaped opening with 90,60,30 ° of angle.Exterior angle is equal to 45,60,75 °.V-shaped opening manufacture It is parallel with the setting square side at 60 ° of angles is formed to be formed the small right-angle side at 60 ° of angles and bevel edge, and with an outer edge With the intersection point and external triangular of the straight line being overlapped with one big right-angle side (the big right-angle side is positioned to the edge into 15 ° of angles) A vertex be overlapped.In order to draw angle, mutual two edges (two outer edges and two for forming given angle are used A inward flange)；In order to draw 15 ° of angles, an inward flange and an outer edge are used.The disadvantage of setting square is can only be quick Draw the angle of limited quantity.Do not imagine and draws any angle unlisted above.

It it is known that (patent of invention RU2060906C1, Int.Cl.B43L 7/00, is disclosed in one group of square 27.05.1996), it is manufactured with the v-shaped opening at 45,60,75 ° of angles.Exterior angle is equal to 30,60,90 °.Opening is formed in this way, making Two sides aligned parallels at 60 ° of angles must be formed in the small right-angle side and bevel edge of setting square, and with the inner edge that is located at 15 ° of angles The intersection point of straight line that edge and outer edge are overlapped is overlapped with a vertex of external triangular.The group square is similar to above-mentioned (RU2060905), and have the shortcomings that identical.

The protractor as known to INCRA company has retainer, http://www.incra.com/measuring_ marking-specialty_rules.html.The retainer is used to for protractor being fixed on the material (stop of specific thicknesses The end of material will be arranged in device), and it is detachable.There is no retainer, which can also use on paper.Protractor includes edge The two rows of the radius positioning of angle index pass through slot.It is made with 5 ° of spacing in the first emissions groove close to angle index center, The length of the slot of second row is considerably shorter, and spacing is 1 °.Hole positioned at angle index center is used for writing instrument.The said firm is also raw Produce ruler, the angled scale of the ruler and the emissions groove arranged along the radius of angle index, the spacing of the slot be 5 ° (http: // www.incra.com/measuring_marking-specialty_rules.html# prettyPhoto[pp_index]/ 2/).The shortcomings that instrument, is that it cannot disposably draw out angle arm, because of the slot not Kong Lian with angle index center It connects.In order to draw angle, it is necessary to the label formed along slit and angle vertex are in addition connected, this needs additional operation, and It increases and draws the time.

Be selected as prototype closest to technical solution be ErichKrause company 180 ° of protractor (http: // www.erichkrause.com/public/userfiles/catalogues/ek_cat_2017/ index.html#474)。 Protractor is made for plate, which includes semi-circular portions, the semi-circular portions by originate in a center two circular arcs and long side with Half circular diameter adjacent rectangle determines.Semicircle includes angle index, and rectangle includes linear graduation.In its close semicircle In the long side of arc, rectangle has the protrusion for being made for small semicircle, which has hole in its center, which is in angle index The heart.Therefore, protractor is it can be seen that be the plate for including slot, which is made for semi-circular portions, and the semi-circular portions are by originating in angle Two circular arcs at scale center determine.There are two linear side, its lines to pass through angle index along 0 ° and 180 ° of direction for slot Center.

The protractor has the disadvantage that:

When carrying out measurement angle using sharpened instrument, for example, the sharp working end of pen or pencil is arranged in angle index In the hole of the heart, it is therefore an objective to accurately find the vertex for the angle to be measured, writing instrument is arranged shield angle in such aperture The sight for spending vertex, because protractor may deviate, to reduce measurement accuracy.

In the case where not using other instrument when measurement angle, it is difficult that rapidly the hole at angle index center is arranged On the vertex for the angle to be measured, and 0 ° of direction of straight line side of protractor is overlapped with angle arm.Due to the ruler in hole It is very little small, it is difficult to observe the vertex for the angle to be measured by the hole, and since protractor is not reliably fixed, angle is carved Degree center deviates in operation, and needs to spend the additional time that it is arranged in angle vertex.This makes it difficult to Using protractor, and reduce measurement accuracy.

When drawing angle by a kind of method, wherein user will draw the line of the first arm of angle first, then use book Instrument is write to make label corresponding with desired angle value, then rotates protractor, and draws the second arm of angle, by In above-mentioned reason, measurement accuracy is not accurate enough, and non-drawing time increases.

When drawing angle by a kind of method, wherein user writing instrument is arranged in the hole at angle index center (hole is used as pivotal axis), and angle arm is drawn along slot straight line side, so that it is moved to wishing for around the pivot axis Hope angle, this cannot disposably draw out angle arm, because the straight line side of slot is not connect with the hole of angle index.In order to It completes to draw angle, it is required that the angle arm drawn is connect with its vertex, this needs other operation, and increases drafting Time, precision and tidiness.

Utility model content

The purpose of the utility model of proposition is to expand the range drawn with measuring instrument, and instrument is made to be easy to use.

Purpose of the utility model is realized as follows: a kind of drawing and measuring instrument, are made for plate, including angle is carved Degree, the slot with straight line side, and the line of the slot is by the center of angle index, wherein a line passes through 0 ° of angle index Label, it is characterised in that: the straight line side of the slot originates in the center of angle index, and is positioned to 30 ° each other To 90 ° of angle.

According to the drawing and measuring instrument, it is characterised in that: a side of the exterior contour of plate includes linear carves Degree.

According to the drawing and measuring instrument, it is characterised in that: plate is made of clear material.

According to the drawing and measuring instrument, it is characterised in that: plate is made for have rectangular semicircle, rectangle It is adjacent with semicircular diameter.

According to the drawing and measuring instrument, it is characterised in that: the plate is made for rectangle.

According to the drawing and measuring instrument, it is characterised in that: the plate is made for right angled triangle, and originates in angle The straight line side of the slot at scale center is parallel to the side of triangle.

According to the drawing and measuring instrument, it is characterised in that: originate at least one slot at angle index center Straight line side includes linear graduation, wherein zero flag is at the center of angle index.

According to the drawing and measuring instrument, it is characterised in that: angle index and linear graduation are formed in the two sides of plate Bian Shang.

According to the drawing and measuring instrument, it is characterised in that: angle index has dual digital indication, and a number refers to Show and be arranged to clockwise, another digital indication is arranged to counterclockwise.

According to the drawing and measuring instrument, it is characterised in that: range be the angle index from 30 ° to 60 ° include to A few through-hole.

According to the drawing and measuring instrument, it is characterised in that: including additional angle scale, the additional angle scale cloth It sets between the straight line side for originating in the slot at angle index center, wherein the zero point of the additional angle scale is located at the straight of slot On the line on line side side, and not by 0 ° of label of basic angle index.

It has the technical effect that the range for expanding drawing and measuring instrument, reduces the time for measuring and drawing angle, Because reducing the number of operations of execution, and the precision of angle measurement and drawing is increased, because it is definite with measuring instrument to draw Be securely fixed.

Technical effect is by the fact that realize, in the drawing and measuring instrument for being made as plate, it includes that angle is carved Degree, the slot with straight line side, and the center that its line passes through angle index, wherein a line is marked by 0 ° of angle index Note, according to the utility model, the straight line side originates in angle index center, and is positioned to 30 ° to 90 ° of angle each other Degree.

It should be appreciated that

One side of plate exterior contour includes linear graduation；

Plate is made of clear material；

Plate is made for semicircle, has the rectangle adjacent with its diameter；

The plate is made for rectangle；

The plate is made for right angled triangle, and the slot straight line side for originating in angle index center is parallel to triangle Side；

At least one the slot straight line side for originating in angle index center includes linear graduation, wherein zero flag is in angle Scale center；

Azimuth and linear graduation are formed on the two sides of plate；

Angle index has dual digital indication, and a digital indication is arranged to clockwise, another is arranged to counterclockwise；

Range is that the angle index from 30 ° to 60 ° includes at least one through-hole；

It draws and measuring instrument includes additional angle scale, which, which is arranged in, originates in angle index Between the slot straight line side of the heart, wherein zero reference point is located on the line of slot straight line side, and not by basic angle index 0 ° of label.

Detailed description of the invention

The utility model is explained by following attached drawing:

- Fig. 1-drawing and measuring instrument have adjacent with its diameter rectangular in the case where making plate be made for semicircle Shape；

- Fig. 2-drawing and measuring instrument have adjacent with its diameter rectangular in the case where making plate be made for semicircle Shape；

- Fig. 3-drawing and measuring instrument, in the case where plate is made for rectangular situation；

- Fig. 4-drawing and measuring instrument, in the case where plate is made for right angled triangle.

Specific embodiment

The thin plate (1) that drawing and measuring instrument are substantially mainly made of clear material, such as polyvinyl chloride.Make plate system As transparent so that the instrument is easy to use because by the transparent panel, instrument can be easily positioned on paper with It in the correct position needed for drawing geometric figure, or is located on the geometric figure drawn, to realize the purpose.System The form for making plate is determined by the hobby of user completely, and can be completed as rectangle, right angled triangle or semicircle, the semicircle Shape has the rectangle adjacent with its diameter, it can also be to guarantee that instrument keeps any other form of its drawing function.

Plate 1 includes angle index 2 and slot 3.Two straight line sides 4 and 5 of the slot 3 originate in the center 6 of angle index 2. The line of straight line side 4 passes through 0 ° of label of angle index 2.This allows to the measurement and drafting of quick execution angle, without Want any other operation and calculating.The tilt angle relative to each other of straight line side 4 and 5 is 30 ° -90 °.Straight line side 4 and 5 The range of tilt angles and their origins at 2 center 6 of angle index will be by using drawing and measuring instrument Method is adjusted, according to this method, when drafting, measurement and execute it is to the geometry for having desired angle value relevant its When its behavior, need to use writing instrument as supporting-point and pivotal axis, its working end is arranged by straight line side 4 and 5 In the angular vertex of formation.The angle that is tilted in relation to each other of straight line side 4 and 5 will be at drafting or measurement angle less than 30 ° or greater than 90 ° Lead to mistake when spending, because the sharp working end of writing instrument is not accurately set in the center 6 of angle index 2, moreover, greatly It cannot be guaranteed necessity bearing for writing instrument in 90 ° of tilt angles, this will be so that draw difficult.

3 form of slot proposed can reduce the time of drafting and any angle of measurement and improve accuracy.In order to understand This point is shown below and is drawing and measuring angle by the drawing and measuring instrument that are proposed and by common protractor The comparison carried out between degree.The video of this comparison provided on the website YouTube by author (https: // Www.youtube.com/watch? v=JUEunGLcfF8).It is to be appreciated that zero axle is by angle index center and to pass through angle Spend the line of 0 ° of mark line of scale.

When carrying out measurement angle using common protractor, it is necessary to first guide at angle index center to angle vertex, so It is overlapped the zero axle of protractor with angle arm.In doing so, since protractor is not reliably fixed, angle index center Offset, and need to spend the other time that it is arranged in angle vertex.It is difficult to use that this makes protractor, and reduces Measurement accuracy.Such as in prototype, angle index center it is available, not can solve the problem for the aperture of writing instrument, because The sight that angle vertex will be covered in this aperture is set for writing instrument, and protractor may deviate as a result, this will reduce and surveys Accuracy of measurement.

By the drawing and measuring instrument of proposition, measurement angle will be easier.User will measure writing instrument setting Angle vertex on, pick up plate 1, and be pressed into its angle formed by straight line side 4 and 5 on writing instrument, then turn The plate 1 is moved, until arm and the straight line side 4 (draw and the zero axle of measuring instrument) of the angle to be measured are overlapped, and by using Second arm of angle carrys out measurement angle value.Therefore, it draws and the operating quantity of measuring instrument is smaller, which reduce time of measuring.By It in the accurate of plate 1 and is reliably fixed, is not needed when the center 6 for making angle index 2 is overlapped with the vertex for the angle to be measured It focuses on, wherein measurement accuracy improves.

When drawing angle using common protractor, user will draw the line of the first arm of angle first, then use angle Scale come determine relative to assume angle vertex desired angle value, it is marked by using writing instrument, the amount of being rotated further by Angle device and the second arm for drawing angle.

By the drawing and measuring instrument of proposition, draws angle and be easier.Using writing instrument, user will be along straight line side 4 draw the first arm of angle along the direction towards the center of angle index 26 (intersection point of straight line side 4 and 5), then will write Instrument, which is fixed therein and rotates, presses plate 1 on the writing instrument, until angle to be drawn desired value and angle the One arm is overlapped, and then draws the second arm of angle along the direction for leaving 2 center 6 of angle index along straight line side 4.Therefore, it draws Angle is carried out in the case where not picking up writing instrument from paper, does not need the position for marking determining the second arm of angle, into The lesser amount of operation of row, which reduce for drawing angle the time it takes.It to be drawn since plate 1 is precisely and reliably fixed on On the vertex of the angle of system, therefore measurement accuracy improves.

It draws and measuring instrument is preferably made so that the straight line side 4 and 5 of slot 3 is positioned to be mutually perpendicular to, because directly The visual perception at angle can quickly guide the attention of people when drawing and measurement angle, in addition, when solving geometrical issues Mainly use right angle.

Technically it cannot be guaranteed that the straight line side 4 and 5 of slot 3 is free from errors come from point corresponding with angle index center It draws, therefore in order to guarantee measurement and drafting accuracy, the error is no more than+1.0mm.

Slot 3 (can have closed profile, such as Fig. 1 for opening (having unclosed profile, in Fig. 2 and 3) and closing In Fig. 4).The shape of enclosed slot 3 is only determined by straight line side 4 and 5, and the line for connecting the end of straight line side 4 and 5 can To be such as striping (Fig. 1), straight line (Fig. 4), arcuate line.

In order to measure and draw straight line, is drawing and providing linear graduation 7 in measuring instrument, the linear graduation 7 arrangement On a side of the exterior contour of plate 1.

It is drawn the time to reduce geometric figure, at least one of straight line side 4 and 5 of slot 3 includes linear graduation 8, Wherein, zero flag is at the center of angle index 26.

Angle index 2 has dual digital indication, which is arranged to clockwise and anticlockwise, this drawing The attention of people can be quickly guided when system and the angle of measurement different location.

In the case where keeping plate 1 opaque, angle index 2 and linear graduation 7 and 8 are formed in the two sides of plate, this simplifies The use drawn with measuring instrument.

As a specific embodiments of the utility model, the angle index 2 within the scope of 30 ° to 60 ° includes at least one A through-hole 9, the through-hole 9 will be used for writing instrument, this make it possible to draw without using a pair of of compasses a circumference or Circular arc, such as circular diagram.Hole 9 can be formed as triangle (Fig. 4), for quickly and correctly drawing vector head.

As specific embodiments (Fig. 1), draws and measuring instrument includes the additional angle between straight line side 4 and 5 Scale 10, wherein zero point is located on straight line side 5.Therefore, instrument gives other zero axle, this causes using two straight lines Side 4,5 measures and draws angle, this makes it possible to easily and quickly, and orientation is drawn and measuring instrument on paper.

The drawing and measuring instrument proposed realizes the purpose of this utility model.It is easy to use, and can not only be fast Speed and accurately measure and draw angle, additionally it is possible to measurement and draw with many kinds of parameters geometric figure.

It draws and measuring instrument (Fig. 1,2,3 and 4) operates in the following way.

Measurement and the video for drawing angle provide on the following websites: YouTube https: //www.youtube.com/ Watch? v=JUEunGLcfF8.

Measurement angle.Writing instrument is placed on the vertex for the angle to be measured, picks up plate 1, and make it by straight line The angle that side 4 and 5 is formed is pressed on writing instrument, then rotates the plate 1, arm and straight line side until the angle to be measured 4 are overlapped, and carry out measurement angle value by using the second arm.It, can be by straight in the case where angle index 10 can be used in instrument Line side side 5 measures, which is used as zero axle.

Draw angle.Using writing instrument, user by along straight line side 4 along towards 6 (straight sides of the center of angle index 2 The intersection point on side 4 and 5) direction draw angle the first arm, writing instrument is fixed therein and rotate pressing in the writing instrument Plate 1 on device, until the desired value of angle to be drawn is overlapped with the first arm, then along straight line side 4 along leaving in angle index 2 Draw the second arm of angle in the direction of the heart 6.In instrument can use angle index 10 in the case where, can by straight line side 5 come It is drawn, which is used as zero axle, it is similar to the above.

Graphing

The example for drawing regular pentagon

The video for drawing regular pentagon provides on the following websites: YouTube https: //www.youtube.com/ Watch? v=fWU9VL1pThE

Along zero axle (straight line side 4 or straight line side 5, in the case where there are available additional scale 10), carved along towards angle Draw pentagonal first side in the direction for spending 2 centers 6.In doing so, side edge length is measured with slide-rule dial 8.Then, Writing instrument is fixed at the center 6 of angle index 2, and rotates the plate 1 pressed on the writing instrument, until desired Angle value (108 °) is overlapped with pentagonal first side.Then, pentagonal second side is drawn along zero axle, done so When, given length is measured using linear graduation 8, writing instrument is fixed at this, and moves plate 1, until angle index 2 Center 6 (intersection point of side 4 and 5) be resisted against on writing instrument.Then the plate 1 for rotating pressing, until desired angle value (108 °) are overlapped with pentagonal second side, and draw pentagonal third side along zero axle, then fixed again to write Instrument, and move to plate 1 thereon, etc., until drawing pentagon completely.

The drafting of other geometric figures carries out in a similar manner.

Draw circular pattern.In order to draw circumference, two writing instruments are used.First writing instrument is arranged in angle At scale center 6, it is fixed on wherein, and second writing instrument is arranged in through-hole 9, to be maintained at writing instrument Between elongation (tension), and draw circumference.From the center of the circumference of drafting draw desired value sector will with be used for Mode similar described in angle is drawn to carry out.

Plate 1 and slot 3 can exhaustive multiple combinations execute with given Fig. 1-4.

Based on instrument (Fig. 2) and it be combined relative to the mirror image of the axis tangent with angle index 2, Straight line side 4 of the axis perpendicular to slot 3.The instrument includes two angle indexes 2, this makes it possible to draw and measure executing When rapidly it is oriented on paper.The measurement and drafting of angle and figure are with the use class with the instrument provided in Fig. 1-4 As mode carry out.

Based on instrument (Fig. 1) position of slot 3 is changed.In the instrument, the straight line side 4 of slot 3 45° angle degree is formed with zero axle, wherein straight line side 4 and 5 is mutually perpendicular to.The measurement and drafting of angle are by using additional angle Scale executes, which is formed with dual digital indication and executes: clockwise and anticlockwise.This measuring and drawing Two sides are able to use when angle and figure as zero axle.Measure and draw the principle of angle and figure and using in Fig. 1-4 The instrument provided is similar.

The drawing of proposition and measuring instrument are easy to use, and provide the wider possibility for meeting a variety of hobbies of user.

Claims (11)

1. a kind of drawing and measuring instrument, are made for plate, including angle index, the slot with straight line side, and the line of the slot By the center of angle index, wherein 0 ° label of the line by angle index, it is characterised in that: the straight line of the slot Side originates in the center of angle index, and is positioned to 30 ° to 90 ° of angle each other.

2. drawing according to claim 1 and measuring instrument, it is characterised in that: a side of the exterior contour of plate includes Linear graduation.

3. drawing according to claim 1 and measuring instrument, it is characterised in that: plate is made of clear material.

4. drawing according to claim 1 and measuring instrument, it is characterised in that: plate is made for have rectangular semicircle Shape, rectangle are adjacent with semicircular diameter.

5. drawing according to claim 1 and measuring instrument, it is characterised in that: the plate is made for rectangle.

6. drawing according to claim 1 and measuring instrument, it is characterised in that: the plate is made for right angled triangle, and rises The straight line side for starting from the slot at angle index center is parallel to the side of triangle.

7. drawing according to claim 1 and measuring instrument, it is characterised in that: originate at least the one of angle index center The straight line side of a slot includes linear graduation, wherein zero flag is at the center of angle index.

8. drawing according to claim 7 and measuring instrument, it is characterised in that: angle index and linear graduation are formed in plate Two sides on.

9. drawing according to claim 1 and measuring instrument, it is characterised in that: angle index has a dual digital indication, and one A digital indication is arranged to clockwise, another digital indication is arranged to counterclockwise.

10. drawing according to claim 1 and measuring instrument, it is characterised in that: range is that the angle from 30 ° to 60 ° is carved Degree includes at least one through-hole.

11. drawing according to claim 1 and measuring instrument, it is characterised in that: including additional angle scale, the additional angle Degree scale is arranged between the straight line side for originating in the slot at angle index center, wherein the zero point position of the additional angle scale In on the line of the straight line side of slot, and not by 0 ° of label of basic angle index.