CN2470132Y

CN2470132Y - Plane multi-function triangle

Info

Publication number: CN2470132Y
Application number: CN 00266114
Authority: CN
Inventors: 肖勇强
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-29
Filing date: 2000-12-29
Publication date: 2002-01-09
Anticipated expiration: 2010-12-29

Abstract

The utility model discloses a multifunctional plane triangular ruler, composed of a first graduated scale1, a second graduated scale2 and a third graduated scale3. One end of the graduated scale2 is actively connected to one end of the graduated scale3 and the other end of the graduated scale2 is provided with a collet 7 to sleeve the drawing tools; the stitch6 of a bow compass is arranged at the other end of the graduated scale3; one end of the graduated scale1 is hinged at the middle of the graduated scale3. The utility model, combining the functions of a bow compass, a protractor and a triangular ruler, can be used to draw circles, angles, polygons and to measure scales, providing convenience for teaching.

Description

The plane multi-functional triangular ruler

The present invention relates to a kind of plane multi-functional triangular ruler.

At present, draw tool function ratio such as collection compasses, protractor, set square are more single.

The object of the present invention is to provide a kind of plane multi-functional triangular ruler that integrates functions such as compasses, protractor, set square.

The object of the present invention is achieved like this: rule 2 and rule 3 are in the end loose joint, the other end of rule 2 is equipped with the chuck 7 that is used for the suit draw tool, the other end of rule 3 is equipped with compasses stitch 6, and an end of rule 1 is articulated in waist in the rule 3.The end of rule 2 and rule 3 is hinged with contiguous block 8 respectively, the upper end of contiguous block 8 or be provided with handle 9.Rule 2 and rule 3 ends are hinged by bolt sleeve.Rule 1, rule 2 and rule 3 are square strip, also can adopt transparent ruler.The middle part of rule 3 is provided with straight trough 5 to the end that stitch 6 is installed, and rule 1 one ends are sleeved in the straight trough 5 of rule 3.Rule 2 is provided with scale mark a, and the downside of rule 1 is provided with scale mark c, and upside is provided with scale mark d, and rule 3 is provided with scale mark b and graticule AB, and the midpoint of rule 3 also is provided with the protractor scale mark.

In sum, advantage of the present invention is: it integrates functions such as compasses, protractor, set square, can make any circle, arbitrarily angle, arbitrary polygon and calculating yardstick, more convenient teaching.

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is the structural representation of embodiments of the invention 1;

Fig. 2 is the structural representation of embodiment 2;

Fig. 3 is how much legends 1 of embodiment;

Fig. 4 is how much legends 2 of embodiment.

As shown in Figure 1, the end of rule 2 and rule 3 is hinged with contiguous block 8 respectively, also is provided with handle 9 so that manipulate in the upper end of contiguous block 8.The other end of rule 2 is equipped with the lead for retractable pencil chuck 7 that is used for the suit drawing, and the other end of rule 3 is equipped with compasses stitch 6, and an end of rule 1 is articulated in waist in the rule 3.Rule 1, rule 2 and rule 3 are square strip.The middle part of rule 3 is provided with straight trough 5 to the end that stitch 6 is installed, and rule 1 one ends are sleeved in the straight trough 5 of rule 3.Rule 2 is provided with scale mark a, and the downside of rule 1 is provided with scale mark c, and upside is provided with scale mark d, and rule 3 is provided with scale mark b and graticule AB, and the midpoint of rule 3 also is provided with the protractor scale mark.Rule 2 is α with the angle of rule 3, and rule 1 is β with the angle of rule 3.

As shown in Figure 2, rule 2 and rule 3 ends are hinged by bolt sleeve.The other end of rule 2 is equipped with the chalk chuck 7 that is used for the suit drawing, and the other end of rule 3 is equipped with compasses stitch 6, and an end of rule 1 is articulated in waist in the rule 3.Rule 1, rule 2 and rule 3 are the quad flat strip.The middle part of rule 3 is provided with straight trough 5 to the end that stitch 6 is installed, and rule 1 one ends and rule 3 are hinged in the upper end of straight trough 5.

Embodiment 1, measures the number of degrees of one jiao of α: rule 2, rule 3 are overlapped with α both sides, angle, and mobile rule 1 overlaps with AB line on the rule 3, and the number of degrees are the number of degrees of the angulation a of institute shown in the intersection point of a and d.

It also can draw arbitrary triangle, need only a, b, c intersects arbitrarily and get final product; Also can be respectively the triangle of 45 degree, 30 degree, 105 degree as interior angle, according to said method angle α=105 degree, the protractor according to rule 3 midpoint makes angle β=30 degree then, can make desired triangle.

Embodiment 2, and make circle amount radius of circle: make rule 1 end place rule 3 midpoint, make a, b, c constitute an isoceles triangle shape (being a=b), then length shown in the c is radius of a circle.

Embodiment 3, separate topic how much, as shown in Figure 3, angle for the angle E that finds the solution right-angle triangle Δ EFG according to similar triangle theory, makes c perpendicular to b, c hands over b in the 15cm place, a and c intersect to hand over c in the 20cm place, and mobile then rule 1 overlaps with AB, then angle E shown in the intersection point of a and d equal 54 ° 30 '.

It also can find the solution other how much topics, and all known two elements can go out other three elements with similar approach: as shown in Figure 4, make angle α=30 degree, c=10cm makes c perpendicular to b, and c hands over b in 17.4cm place, then CD=34.8cm; Make angle α=60 degree again, b=34.8cm makes c perpendicular to b, and a hands over c in 30cm place, then AC=60cm; Draw AB=AC-BC=60-20=40cm thus.

Claims

1, a kind of plane multi-functional triangular ruler, it comprises rule [1], rule [2] and rule [3], it is characterized in that: rule [2] and rule [3] are in the end loose joint, the other end of rule [2] is equipped with the chuck [7] that is used for the suit draw tool, the other end of rule [3] is equipped with compasses stitch [6], and an end of rule [1] is articulated in waist in the rule [3].

2, according to the described plane of claim 1 multi-functional triangular ruler, it is characterized in that: the end of rule [2] and rule [3] is hinged with contiguous block [8] respectively, the upper end of contiguous block [8] or be provided with handle [9].

3, according to the described plane of claim 1 multi-functional triangular ruler, it is characterized in that: rule [2] and rule [3] end are hinged by bolt sleeve.

4, according to claim 1 or 2 or 3 described plane multi-functional triangular rulers, it is characterized in that: rule [1], rule [2] and rule [3] are square strip, or are transparent ruler.

5, according to the described plane of claim 4 multi-functional triangular ruler, it is characterized in that: the middle part of rule [3] is provided with straight trough [5] to the end that stitch [6] is installed, and rule [1] one end is sleeved in rule [3] straight trough [5].

6, according to claim 1 or 2 or 3 or 5 described plane multi-functional triangular rulers, it is characterized in that: rule [2] is provided with scale mark a, the downside of rule [1] is provided with scale mark c, upside is provided with scale mark d, rule [3] is provided with scale mark b and graticule AB, and the midpoint of rule [3] also is provided with the protractor scale mark.