CN206426723U

CN206426723U - Combined type structural apparatus

Info

Publication number: CN206426723U
Application number: CN201621322565.2U
Authority: CN
Inventors: 王�华
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-05
Filing date: 2016-12-05
Publication date: 2017-08-22
Anticipated expiration: 2026-12-05

Abstract

The utility model discloses a kind of combined type structural apparatus, including protractor, main scale and secondary ruler, one end of the secondary ruler rotates the surface for being arranged at the protractor by first rotating shaft, the other end of the secondary ruler is provided with chalk hole, the linear side wall of the protractor offers groove, one end of the main scale is arranged in the groove by the second axis of rotation, and the other end of the main scale is less than remote second rotating shaft and one end farther out of second rotating shaft to the groove to the distance of second rotating shaft, the consistency of thickness of the width of the groove and the main scale.The teaching and experiment equipment it is simple in construction, it is easy to use, can be used for the drafting of straight line and a variety of curves.

Description

Combined type structural apparatus

Technical field

The utility model is related to the teaching aid such as mathematics, physics field, specially a kind of combined type structural apparatus.

Background technology

In teaching process, often drawn on blackboard, particularly on mathematics and physics lesson, often using a variety of rulers Straight line, the drafting of curve are carried out, such as can use ruler, set square and compasses.

At present, for the drafting of straight line and curve, typically still drawn using ruler or compasses, what influence teacher gave lessons enters Journey, and carry more troublesome.

Although occurring in that many similar combined instruments now, the structure of such combined instrument is typically complex, makes With, store and carry all inconvenient.

Utility model content

The purpose of this utility model is to provide a kind of combined type structural apparatus, to solve to carry in above-mentioned background technology The problem of going out.

To achieve the above object, the utility model provides following technical scheme：Combined type structural apparatus, including angulation Device, main scale and secondary ruler, one end of the secondary ruler rotate the surface for being arranged at the protractor by first rotating shaft, the secondary ruler The other end is provided with chalk hole, and the linear side wall of the protractor offers groove, and one end of the main scale passes through second turn Axle is rotated and is arranged in the groove, and the other end of the main scale is arrived to the distance of second rotating shaft less than second rotating shaft Remote second rotating shaft of the groove and one end farther out, the consistency of thickness of the width of the groove and the main scale.

It is preferred that, the chalk hole position is in the outside of the protractor radiused edges, and the chalk hole is described in The side of first rotating shaft is adjacent with the radiused edges of the protractor.

It is preferred that, the internal diameter in the chalk hole is adapted with the external diameter of chalk.

It is preferred that, circular hole, rectangular opening, tri-angle-holed, hexagonal hole and pentagon hole are additionally provided with the protractor.

It is preferred that, one end of remote second rotating shaft of the main scale is provided with lifting ear.

Compared with prior art, the beneficial effects of the utility model are：The teaching and experiment equipment is simple in construction, can be used for Draw a variety of curves, and the hole of various shapes is offered on protractor wherein, for example, rectangular opening, circular hole, pentagon hole Deng, various shapes can be conveniently drawn, and main scale and secondary ruler are utilized, straight line or curve can also be conveniently drawn, wherein, it is main Chi can be stored or deployed with respect to protractor, beneficial to carrying, because the width of the groove on the thickness or protractor of main scale is consistent, Thus, when main scale is rotated in groove, main scale is mutually adjacent to groove, in use, can be pulled it using the lifting ear on main scale, it is non- Normal convenience.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model embodiment；

Fig. 2 is Fig. 1 stereogram；

Fig. 3 is Fig. 1 upward view.

In figure：1- protractors, 2- main scales, 3- secondary rulers, 4- chalks hole, 5- first rotating shafts, the rotating shafts of 6- second, 7- grooves, 8- circles Hole, 9- rectangular openings, 10- is tri-angle-holed, 11- hexagonal holes, 12- pentagons hole, 13- lifting ears.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.

Fig. 1 and Fig. 2 are referred to, the utility model provides a kind of technical scheme：Combined type structural apparatus, including angulation Device 1, main scale 2 and secondary ruler 3, wherein, it is provided with scale in protractor 1, main scale 2 and secondary ruler 3（Not shown in figure）, secondary ruler 3 One end rotates the surface for being arranged at protractor 1 by first rotating shaft 5, and the other end of secondary ruler 3 is provided with chalk hole 4, wherein, chalk Hole 4 is located at the outside of the radiused edges of protractor 1, and chalk hole 4 is towards the circular arc of the side of first rotating shaft 5 and protractor 1 Edge is adjacent, so, when needing to draw camber line, can be placed in chalk in chalk hole 4, and rotating secondary ruler 3 can be passed through with chalk hole 4 The curve of identical radian measure is drawn in the track crossed, wherein, the internal diameter in chalk hole 4 is adapted with the external diameter of chalk, because the master of chalk Will in reducing, each section of diameter is different from, therefore, the aperture in chalk hole 4 can less times greater than chalk external diameter.

Refering to Fig. 3, the linear side wall of protractor 1 offers groove 7, and the groove 7 is that can run through the two ends of protractor 1, Can also only run through wherein one end of protractor 1, or the groove 7 two ends not through protractor 1, in the present embodiment, groove 7 is passed through Wear one end of protractor 1, one end of main scale 2 is rotated by the second rotating shaft 6 to be arranged in groove 7, and main scale 2 the other end to second The distance of rotating shaft 6 is less than the second rotating shaft 6 to one end away from the second rotating shaft 6 and farther out of groove 7, so, is stored when main scale 2 is rotated When in groove 7, main scale 2 could be taken in groove 7 completely so that the free end of main scale 2 will not expose from the edge of protractor 1, its In, the width of groove 7 and the consistency of thickness of main scale 2, when main scale 2 is stored to groove 7, due to the thickness of the width and main scale 2 of groove 7 Unanimously, therefore, main scale 2 is mutually adjacent to groove 7, under normality, and main scale 2 and groove 7 are not in then relative displacement, for the ease of main scale 2 taking-up, is provided with lifting ear 13 on main scale 2, wherein, lifting ear 13 is arranged on one end away from the second rotating shaft 6 of main scale 2, carries Ear 13 may be provided at the short brink wall of the one end of main scale 2, can also be arranged on the side wall on the long side in end of the one end of main scale 2, when main scale 2 is received When including in groove 7, now, lifting ear 13 be located at main scale 2 towards the side wall outside protractor 1, when needing to use, by means of lifting ear 13, then it can conveniently pull out main scale 2.

In the present embodiment, map for convenience, shorten the mapping time, to lift teaching process, also set up on protractor 1 There are circular hole 8, rectangular opening 9, tri-angle-holed 10, hexagonal hole 11 and pentagon hole 12, being drawn with fast and easy has various shapes Image；In addition, rectangular opening 9 is also used as hand-held handle, the teaching and experiment equipment is conveniently gripped.

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it can still be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is entered Row equivalent substitution, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc. all should Within protection domain of the present utility model.

Claims

1. combined type structural apparatus, it is characterised in that including protractor（1）, main scale（2）And secondary ruler（3）, the secondary ruler （3）One end pass through first rotating shaft（5）Rotation is arranged at the protractor（1）Surface, the secondary ruler（3）The other end set There is chalk hole（4）, the protractor（1）Linear side wall offer groove（7）, the main scale（2）One end pass through second Rotating shaft（6）Rotation is arranged at the groove（7）It is interior, and the main scale（2）The other end to second rotating shaft（6）Distance be less than Second rotating shaft（6）To the groove（7）Remote second rotating shaft（6）And one end farther out, the groove（7）Width with The main scale（2）Consistency of thickness.

2. combined type structural apparatus according to claim 1, it is characterised in that the chalk hole（4）Positioned at described Protractor（1）The outside of radiused edges, and the chalk hole（4）Towards the first rotating shaft（5）Side and the angulation Device（1）Radiused edges it is adjacent.

3. combined type structural apparatus according to claim 2, it is characterised in that the chalk hole（4）Internal diameter with The external diameter of chalk is adapted.

4. combined type structural apparatus according to claim 1, it is characterised in that the protractor（1）On also set up There is circular hole（8）, rectangular opening（9）, it is tri-angle-holed（10）, hexagonal hole（11）With pentagon hole（12）.

5. combined type structural apparatus according to claim 1, it is characterised in that the main scale（2）Away from described Second rotating shaft（6）One end be provided with lifting ear（13）.