CN209395475U - High school mathematics multifunctional drawing tool - Google Patents

Abstract

The utility model discloses high school mathematics multifunctional drawing tools, the utility model relates to drawing tool technical fields, including center-pole, the side of the center-pole is rotatably connected to picture bar by shaft, the inside for drawing bar offers thread groove, and the one end for drawing bar is equipped with chalk fixing sleeve, one end of the chalk fixing sleeve is equipped with third screw rod, the other end is equipped with chalk clamping plate, the side of the chalk clamping plate is equipped with the 4th screw rod, the side for drawing bar is equipped with writing ink painting pen installation set, one end of the writing ink painting pen installation set is equipped with the second screw rod, the other end is equipped with ink Casing with pen, the utility model is provided with limit hole and bolt, after solving the radius for determining circle, center-pole and picture bar cannot stablize fixed problem, provided with thread groove and writing ink painting pen installation set, be conducive to carry out picture on teacher's blank and blackboard Figure increases the mounting means of picture pen, and replacement is convenient when teacher uses.

Description

High school mathematics multifunctional drawing tool

Technical field

The utility model belongs to drawing tool technical field, and in particular to high school mathematics multifunctional drawing tool.

Background technique

Drawing tool is a kind of light instrument of figure of painting, in teaching process, it is often necessary to drawing tool is used, Drawing tool is generally light-weight, portable, and structure is simple, and in mathematical education, teacher often uses ruler and compasses as drawing work Tool.

But high school mathematics currently on the market are not able to satisfy requirement with multifunctional drawing tool, teacher uses compasses In blackboard upper drawing circle, after determining the radius of circle, center-pole and picture bar cannot stablize fixation, and the fixed form of paintbrush is only There is one kind, the problem of based on appearing above, proposes high school mathematics multifunctional drawing tool.

Utility model content

The purpose of this utility model is to provide high school mathematics multifunctional drawing tools, to solve in above-mentioned background technique The problem of position of center-pole and picture bar cannot stablize fixation on the compasses of proposition, and compasses can only fill a kind of paintbrush.

To achieve the above object, the utility model provides the following technical solutions: including center-pole, the side of the center-pole It is rotatably connected to picture bar by shaft, the inside for drawing bar offers thread groove, and the one end for drawing bar is equipped with chalk and fixes Set, one end of the chalk fixing sleeve are equipped with third screw rod, and the other end is equipped with chalk clamping plate, the side of the chalk clamping plate 4th screw rod is installed, and one end of the 4th screw rod is equipped with the elastic knob of third, the side for drawing bar is equipped with writing ink painting pen Installation set, one end of the writing ink painting pen installation set are equipped with the second screw rod, and the other end is equipped with ink Casing with pen, the writing ink painting pen The side of collet is equipped with the first screw rod, and one end of the first screw rod is equipped with the second elastic knob.

Preferably, the inside of the center-pole and picture bar offers axis hole, and the side of axis hole offers limit hole, institute The inside for stating limit hole is equipped with bolt, and the top of bolt is equipped with pulling plate.

Preferably, one end of the center-pole is equipped with blackboard eraser, and the other end is equipped with compasses point.

Preferably, the side of the center-pole is equipped with the first elastic knob, and the side of center-pole is equipped with graduated scale.

Preferably, there are five the limit hole is arranged altogether, and five limit holes are centrally located bar in a ring and draw bar It is internal.

Compared with prior art, the utility model has the beneficial effects that

(1) the utility model is provided with limit hole and bolt, during drawing circle, after user determines the radius of circle, It is inserted into bolt in the limit hole being arranged in center-pole and picture bar, for limiting center-pole and drawing the position of bar, improves center Bar and the stabilization for drawing bar, avoiding teacher, firmly pressing picture bar causes picture bar to rotate in drawing processes, to influence picture circle The problem of accuracy, improves teacher and draws round precision, is easy to use, after solving the radius for determining circle, center-pole and picture bar Fixed problem cannot be stablized；

(2) the utility model is provided with thread groove and writing ink painting pen installation set, after the inside for drawing bar opens up thread groove, leads to The mode for crossing threaded engagement connection uses chalk fixing sleeve and the replacement of writing ink painting pen installation set, is conducive on teacher's blank and blackboard It draws, increases the mounting means of picture pen, replacement is convenient when teacher uses, and class hour will not drag saying for slow teacher on teacher Class progress is conducive to the efficiency of giving lessons for improving teacher.

Detailed description of the invention

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

Fig. 2 is the structural schematic diagram that the utility model draws bar；

Fig. 3 is the structural schematic diagram of the utility model chalk fixing sleeve；

Fig. 4 is the structural schematic diagram of the utility model writing ink painting pen installation set；

Fig. 5 is the enlarged drawing of the utility model a-quadrant；

Fig. 6 is the structural schematic diagram of the utility model bolt；

Fig. 7 is the side view that the utility model draws bar；

In figure: 1- blackboard eraser；The elastic knob of 2- first；3- graduated scale；4- center-pole；5- compasses point；6- chalk fixing sleeve； 7- draws bar；8- limit hole；9- axis hole；10- thread groove；11- writing ink painting pen installation set；12- ink Casing with pen；The first screw rod of 13-； The elastic knob of 14- second；The second screw rod of 15-；16- third screw rod；17- chalk clamping plate；The 4th screw rod of 18-；The elastic rotation of 19- third Button；20- bolt；21- pulling plate.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

It please refers to shown in Fig. 1-Fig. 7, the utility model provides the following technical solutions: high school mathematics multifunctional drawing work The side of tool, including center-pole 4, center-pole 4 is rotatably connected to picture bar 7 by shaft, and the inside for drawing bar 7 offers thread groove 10, and the one end for drawing bar 7 is equipped with chalk fixing sleeve 6, one end of chalk fixing sleeve 6 is equipped with third screw rod 16, other end peace Equipped with chalk clamping plate 17, the side of chalk clamping plate 17 is equipped with the 4th screw rod 18, and one end of the 4th screw rod 18 is equipped with third Elastic knob 19, the side for drawing bar 7 is equipped with writing ink painting pen installation set 11, by chalk fixing sleeve by way of threaded engagement connection 6 and writing ink painting pen installation set 11 replacement use, be conducive to draw on teacher's blank and blackboard, one end of writing ink painting pen installation set 11 Second screw rod 15 is installed, the other end is equipped with ink Casing with pen 12, and the side of ink Casing with pen 12 is equipped with the first screw rod 13, And first one end of screw rod 13 the second elastic knob 14 is installed, by the elastic knob of turn come the position of adjusting screw rod, favorably In the installation and removal of chalk and water-color paintbrush.

For the ease of fixed picture bar 7, it is preferred that center-pole 4 and the inside for drawing bar 7 offer axis hole 9, and axis hole 9 Side offers limit hole 8, and the inside of limit hole 8 is equipped with bolt 20, and center-pole 4 is limited with bolt 20 and draws the position of bar 7 It sets, improve center-pole 4 and draws the stabilization of bar 7, and the top of bolt 20 is equipped with pulling plate 21.

For the ease of drawing circle, it is preferred that one end of center-pole 4 is equipped with blackboard eraser 1, and the other end is equipped with compasses point 5.

Size is determined for the ease of user, it is preferred that the side of center-pole 4 is equipped with the first elastic knob 2, and center The side of bar 4 is equipped with graduated scale 3.

For the ease of user's use, it is preferred that there are five limit hole 8 is arranged altogether, and five limit holes 8 are distributed in a ring In the inside of center-pole 4 and picture bar 7.

The working principle and process for using of the utility model: in use, when drawing on blackboard, chalk is inserted for math teacher Enter in the slot inside chalk fixing sleeve 6, then the elastic knob 19 of turn third, the 4th screw rod 18 is by the elastic knob 19 of third at this time It drives and rotates, the 4th screw rod 18 screws chalk clamping plate 17, and chalk clamping plate 17 is next chalk clamp, according to drawing on books Size, teacher hold drawing tools, and size is then measured on blackboard with graduated scale 3, after drawing the determining center of circle of circle, by compasses point 5 It is placed on the position in the center of circle on blackboard, then extracts bolt 20, adjusts the position of picture bar 7 and center-pole 4, after determining radius, Bolt 20 is inserted into limit hole 8 again by user, is finally support with center-pole 4, and the point centered on the center of circle draws circle with picture bar 7, Math teacher on blank when drawing, teacher's rotary chalk fixing sleeve 6, after third screw rod 16 is detached from thread groove 10, then by second Screw rod 15 screws in thread groove 10, and writing ink painting pen installation set is mounted on picture bar 7, and writing ink painting pen is inserted into ink Casing with pen 12, is screwed After first screw rod 13, teacher carries out picture teaching with writing ink painting pen on blank.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. the side of high school mathematics multifunctional drawing tool, including center-pole (4), the center-pole (4) is rotated by shaft It is connected with picture bar (7), it is characterised in that: the inside for drawing bar (7) offers thread groove (10), and draws one end peace of bar (7) Equipped with chalk fixing sleeve (6), one end of the chalk fixing sleeve (6) is equipped with third screw rod (16), and the other end is equipped with chalk Clamping plate (17), the side of the chalk clamping plate (17) is equipped with the 4th screw rod (18), and one end of the 4th screw rod (18) is equipped with The elastic knob of third (19), the side for drawing bar (7) are equipped with writing ink painting pen installation set (11), the writing ink painting pen installation set (11) One end be equipped with the second screw rod (15), the other end is equipped with ink Casing with pen (12), the side of the ink Casing with pen (12) It is equipped with the first screw rod (13), and one end of the first screw rod (13) is equipped with the second elastic knob (14).

2. high school mathematics multifunctional drawing tool according to claim 1, it is characterised in that: the center-pole (4) and The inside for drawing bar (7) offers axis hole (9), and the side of axis hole (9) offers limit hole (8), the limit hole (8) it is interior Portion is equipped with bolt (20), and the top of bolt (20) is equipped with pulling plate (21).

3. high school mathematics multifunctional drawing tool according to claim 1, it is characterised in that: the center-pole (4) One end is equipped with blackboard eraser (1), and it is sharp (5) that the other end is equipped with compasses.

4. high school mathematics multifunctional drawing tool according to claim 1, it is characterised in that: the center-pole (4) Side is equipped with the first elastic knob (2), and the side of center-pole (4) is equipped with graduated scale (3).

5. high school mathematics multifunctional drawing tool according to claim 2, it is characterised in that: the limit hole (8) is altogether There are five settings, and five limit holes (8) are centrally located bar (4) in a ring and draw the inside of bar (7).