CN208411209U - A kind of drawing tools - Google Patents

Abstract

A kind of drawing tools, it is related to mathematics geometric techniques field；It includes housing ruler, interior slide rule, sucker, protractor, movable rounded corner ruler；The housing ruler is made of crossfoot and perpendicular ruler, and two crossfoots are vertical with the both ends of perpendicular ruler respectively to be connect；The interior slide rule shape and structure is identical as housing ruler, offers sliding slot on the inside of the crossfoot of the housing ruler, and interior slide rule activity is inserted in the sliding slot of housing ruler, constitutes an active rectangle with housing ruler；Both ends are equipped with sucker on the inside of the perpendicular ruler of the housing ruler, are used for fixed jacket ruler；The outer middle side part of the perpendicular ruler of the housing ruler is equipped with protractor, erects ruler middle inside and is equipped with cylinder, movable rounded corner ruler is rotatablely connected by the perpendicular ruler of cylinder and housing ruler, and vertical line and the function with the straight line of known straight line fixed angle are made in realization.It can simply and rapidly draw vertical line, parallel lines etc., standard of mapping, and using simple, both facilitated the operation of teacher, and also improved teaching efficiency indirectly, practical.

Description

A kind of drawing tools

Technical field

The utility model relates to mathematics geometric techniques fields, and in particular to a kind of drawing tools.

Background technique

Geometry is the big branch in mathematical education, and mathematics teacher needs to draw on blackboard when explaining geometric knowledge It is demonstrated, to deepen intuitive understanding of the student to geometric knowledge, the observation ability and thinking ability of Developing Students '.

The drawing tools that existing teacher uses is fairly simple, generally there was only ruler and compasses, is drawing vertical line, parallel lines and folder When certain two straight lines in angle, teacher generally uses ruler to carry out general mapping, directly results in the figure drawn in this way and does not mark Standard influences the visual experience of student, and it is bad to further result in teaching efficiency, and based on the above issues, teacher needs a kind of to facilitate picture Vertical line, parallel lines and the drawing tools with the straight line of known straight line fixed angle out.

Utility model content

The purpose of this utility model is that in view of the drawbacks of the prior art and insufficient, a kind of drawing tools is provided, it can be with Simply and rapidly draw vertical line, parallel lines etc., standard of mapping both had been facilitated the operation of teacher, and also improved indirectly using simple Teaching efficiency, it is practical.

In order to achieve the above purposes, the technical solution adopted by the utility model is:, and it includes housing ruler, interior slide rule, sucker, amount Angle device, movable rounded corner ruler；The housing ruler is made of crossfoot and perpendicular ruler, and two crossfoots are vertical with the both ends of perpendicular ruler respectively to be connected It connects；The interior slide rule shape and structure is identical as housing ruler, and sliding slot, interior slide rule activity are offered on the inside of the crossfoot of the housing ruler It is inserted in the sliding slot of housing ruler, constitutes an active rectangle with housing ruler；Both ends are equipped with sucker on the inside of the perpendicular ruler of the housing ruler, For fixed jacket ruler；The outer middle side part of the perpendicular ruler of the housing ruler is equipped with protractor, erects ruler middle inside and is equipped with cylinder, activity circle Angle square is rotatablely connected by the perpendicular ruler of cylinder and housing ruler, and vertical line and the function with the straight line of known straight line fixed angle are made in realization Energy.

Preferably, the movable rounded corner ruler is folding ruler, end is equipped with circular hole, movable rounded corner ruler and housing The perpendicular ruler of ruler is rotatablely connected by the snapping of cylinder and circular hole, cooperates the protractor on the outside of perpendicular ruler that can make angle and consolidate with known straight line The straight line at clamp angle.

Preferably, being equipped with scale layer on the outside of the crossfoot of the housing ruler, can be used for measuring between two parallel lines Distance or known distance draw parallel lines.

Preferably, the housing ruler, interior slide rule, protractor, movable rounded corner ruler are made of transparent plastic, it is convenient for picture The determination and measurement of size, angle when figure.

Preferably, the protractor is round 360 degree of protractors, compared to 150 degree semicircle protractor angle models It encloses more extensively, using more convenient.

When the utility model is used, to the parallel lines of the known straight line of work, can lead to directly first according to the position of known straight line Cross the perpendicular ruler both ends of sucker fixed jacket ruler, push and pull later in slide rule, make it to behind suitable position, can be direct by interior slide rule Make parallel lines；Straight line to make the vertical line of known straight line or with one clamp angle, also first leads to according to the position of known straight line The perpendicular ruler both ends for crossing sucker fixed jacket ruler are rotated further by movable rounded corner ruler to right angle or other angles, finally by activity circle Angle square makes straight line, and mapping fast and easy is again accurate.

After adopting the above structure, the utility model has the following beneficial effects: it can simply and rapidly draw vertical line, parallel lines Deng standard of mapping both had been facilitated the operation of teacher, and had also been improved teaching efficiency indirectly using simple, practical.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the rearview of housing ruler in the utility model；

Fig. 3 is the structural schematic diagram of movable rounded corner ruler 5 in the utility model.

Description of symbols:

Housing ruler 1, interior slide rule 2, sucker 3, protractor 4, movable rounded corner ruler 5, crossfoot 1-1, perpendicular ruler 1-2, sliding slot 1-11, circle Column 1-21, circular hole 5-1.

Specific embodiment

The utility model will be further described below with reference to the accompanying drawings.

Referring to as shown in Figure 1-Figure 3, present embodiment the technical solution adopted is that: it includes housing ruler 1, interior slide rule 2, sucker 3, protractor 4, movable rounded corner ruler 5；The housing ruler 1 is made of crossfoot 1-1 and perpendicular ruler 1-2, and two crossfoot 1-1 points It is not vertical with the both ends of perpendicular ruler 1-2 to connect；2 shape and structure of interior slide rule is identical as housing ruler 1, the cross of the housing ruler 1 Sliding slot 1-11 is offered on the inside of ruler 1-1, interior 2 activity of slide rule is inserted in the sliding slot 1-11 of housing ruler 1, constitutes one with housing ruler 1 Active rectangle；Both ends are equipped with sucker 3 on the inside of the perpendicular ruler 1-2 of the housing ruler 1, are used for fixed jacket ruler 1；The housing ruler 1 The perpendicular outer middle side part of ruler 1-2 is equipped with protractor 4, erects ruler 1-2 middle inside and is equipped with cylinder 1-21, movable rounded corner ruler 5 passes through cylinder 1- 21 are rotatablely connected with the perpendicular ruler 1-2 of housing ruler 1, and vertical line and the function with the straight line of known straight line fixed angle are made in realization.

In addition, movable rounded corner ruler 5 described in present embodiment is folding ruler, end is equipped with circular hole 5-1, The perpendicular ruler 1-2 of movable rounded corner ruler 5 and housing ruler 1 is rotatablely connected by the snapping of cylinder 1-21 and circular hole 5-1, cooperates perpendicular ruler 1-2 The protractor 4 in outside can make angle and the straight line with known straight line fixed angle.

Wherein, the outside crossfoot 1-1 of the housing ruler 1 is equipped with scale layer, can be used for measuring between two parallel lines Distance or known distance draw parallel lines；The housing ruler 1, interior slide rule 2, protractor 4, movable rounded corner ruler 5 are by transparent plastic It constitutes, the determination and measurement of size, angle when convenient for drawing；The protractor 4 is round 360 degree of protractors, compared to 150 degree of semicircle protractor angular ranges are wider, using more convenient.

Present embodiment, can be directly first according to the position of known straight line in use, parallel lines to make known straight line Set, by the both ends perpendicular ruler 1-2 of 3 fixed jacket ruler 1 of sucker, push and pull later in slide rule 2, make it to behind suitable position, pass through Interior slide rule 2 can directly make parallel lines；Straight line to make the vertical line of known straight line or with one clamp angle, also first known to The position of straight line is rotated further by movable rounded corner ruler 5 to right angle or others by the both ends perpendicular ruler 1-2 of 3 fixed jacket ruler 1 of sucker Angle makes straight line finally by movable rounded corner ruler 5, and mapping fast and easy is again accurate.

After adopting the above structure, present embodiment has the beneficial effect that it can simply and rapidly draw vertical line, flat Line etc., standard of mapping both had been facilitated the operation of teacher, and had also been improved teaching efficiency indirectly using simple, practical.

The above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, those of ordinary skill in the art couple The other modifications or equivalent replacement that the technical solution of the utility model is made, without departing from technical solutions of the utility model Spirit and scope should all cover in the scope of the claims of the utility model.

Claims (5)

1. a kind of drawing tools, it is characterised in that: it includes housing ruler (1), interior slide rule (2), sucker (3), protractor (4), lives Dynamic rounded corner ruler (5)；The housing ruler (1) is made of crossfoot (1-1) and perpendicular ruler (1-2), two crossfoots (1-1) respectively with perpendicular ruler The both ends of (1-2) vertically connect；Interior slide rule (2) shape and structure is identical as housing ruler (1), the cross of the housing ruler (1) It is offered sliding slot (1-11) on the inside of ruler (1-1), interior slide rule (2) activity is inserted in the sliding slot (1-11) of housing ruler (1), with housing Ruler (1) constitutes an active rectangle；Both ends are equipped with sucker (3) on the inside of the perpendicular ruler (1-2) of the housing ruler (1)；The housing ruler (1) Perpendicular ruler (1-2) outer middle side part be equipped with protractor (4), erect ruler (1-2) middle inside be equipped with cylinder (1-21), movable rounded corner ruler (5) it is rotatablely connected by the perpendicular ruler (1-2) of cylinder (1-21) and housing ruler (1).

2. a kind of drawing tools according to claim 1, it is characterised in that the movable rounded corner ruler (5) is folding Ruler, end are equipped with circular hole (5-1), and the perpendicular ruler (1-2) of movable rounded corner ruler (5) and housing ruler (1) passes through cylinder (1-21) and circle The snapping in hole (5-1) is rotatablely connected.

3. a kind of drawing tools according to claim 1, it is characterised in that on the outside of the crossfoot (1-1) of the housing ruler (1) It is equipped with scale layer.

4. a kind of drawing tools according to claim 1, it is characterised in that the housing ruler (1), interior slide rule (2), amount Angle device (4), movable rounded corner ruler (5) are made of transparent plastic.

5. a kind of drawing tools according to claim 1, it is characterised in that the protractor (4) is that circle 360 is measured Angle device.