CN106274189A - Combination changeable ruler - Google Patents

Abstract

The invention discloses a combined variable ruler, which comprises ruler A, ruler B and ruler C, and the ratio of the lengths of ruler A, ruler B and ruler C is The two ends of the ruler B are respectively provided with a rotating shaft A and a rotating shaft B, and one end of the ruler A and the ruler C are respectively connected through the rotation of the rotating shaft A, the rotating shaft B and the ruler B, and the other ends are respectively provided with a positioning buckle A and a positioning buckle B , the positioning buckle A and the positioning buckle B are male and female buckles. One side of ruler A, ruler B, and ruler C are engraved with length scale A, length scale B, and length scale C respectively, and the other sides of ruler A and ruler B are respectively provided with protractor arcs A, protractor arc B, protractor arc A, and protractor arc B are both quarter arcs with the same radius. The invention organically combines the functions of a ruler, a triangle ruler and a protractor, and is convenient to carry and use.

Description

Combination variable ruler

technical field

The invention relates to a measuring and drawing tool, in particular to a combined variable ruler.

Background technique

In daily study and life, various measuring and drawing tools are often used. A relatively complete set of rulers for students includes a ruler, a 45-degree triangle, a 60-degree triangle, and a protractor. Rulers usually only have a measuring range of 15cm or 20cm, while triangle rulers and protractors take up a lot of space and are somewhat inconvenient to carry. During the use of rulers, triangle rulers and protractors, one of them is often lost due to carelessness and affects the use.

Contents of the invention

The purpose of the present invention is to improve and optimize the combination of existing straightedge, triangular ruler and protractor, and develop a combined variable ruler.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A combined variable ruler, comprising ruler A, ruler B, and ruler C; the ratio of the lengths of ruler A, ruler B, and ruler C is The two ends of the ruler B are respectively provided with a rotating shaft A and a rotating shaft B, and one end of the ruler A and the ruler C are respectively rotated and connected through the rotating shaft A, the rotating shaft B and the ruler B; There are positioning buckle A and positioning buckle B, and positioning buckle A and positioning buckle B are male and female buckles; one side of ruler A, ruler B, and ruler C are respectively engraved with length scale A, length scale B, and length scale C, the other side of ruler A and ruler B are respectively provided with a section of protractor arc A, protractor arc B, protractor arc A and protractor bent inwardly towards the chi body direction of ruler A and ruler B, protractor arc A, protractor Arc B is a quarter arc, and the arc radius is the same.

Described ruler first, ruler C are also respectively provided with positioning button C, location button D, and the distance from location button C to one end of ruler first is equal to the length of ruler first The distance from the positioning button to the end of the ruler C is equal to the length of the ruler A Positioning buckle C and positioning buckle D are male and female buckles.

Owing to adopting above-mentioned design, the present invention can produce following change and beneficial effect:

1. Lengthen the ruler. Rotate ruler A and ruler C around rotation axis A and rotation axis B respectively, so that ruler A, ruler B, and ruler C are on a straight line, and a lengthened straight-edge is formed by ruler A, ruler B, and ruler C. ruler.

2. 45 degree triangle ruler and protractor. Fasten the positioning buckle A with the positioning buckle B, and a 45-degree triangle is formed by ruler A, ruler B, and ruler C, and a protractor is formed by protractor arc A, protractor arc B, and the sides of ruler B .

3. 60 degree triangle ruler. Fasten the positioning button C with the positioning button D, and a 60-degree triangle ruler is formed by ruler A, ruler B, and ruler C.

4. Folding ruler. The ruler A, the ruler B and the ruler C can be folded together, and the volume becomes smaller after being folded, which is convenient to carry.

The invention organically combines the functions of the ruler, the triangular ruler and the protractor, and achieves the effect that cannot be achieved when the three are used alone. It is more convenient to carry and use, and it is not easy to lose any one of them.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a schematic diagram of the composition of the present invention.

Fig. 2 is the schematic diagram that the present invention forms 45 degree triangular ruler.

Fig. 3 is the schematic diagram that the present invention constitutes lengthening ruler.

Fig. 4 is the schematic diagram that the present invention forms 60 degree triangular ruler.

Fig. 5 is a schematic diagram of the present invention after folding.

Among the figure: 1. ruler A, 2. ruler B, 3. ruler C, 12. rotating shaft A, 23. rotating shaft B, 13. positioning buckle A, 31. positioning buckle B, 14. length scale A, 24 .Length scale B, 34. Length scale C, 15. Protractor arc A, 25. Protractor arc B, 32. Protractor circle center mark, 16. Positioning buckle C, 36. Positioning buckle D.

detailed description

As shown in Figure 1, the present invention comprises ruler A 1, ruler B 2, ruler C 3. The ratio of the lengths of ruler A1, ruler B2 and ruler C3 is The two ends of ruler second 2 are provided with rotating shaft first 12, rotating shaft second 23 respectively, and one end of ruler first 1, ruler third 3 is connected with ruler second 2 by rotating shaft first 12, rotating shaft second 23 respectively. The other end of ruler first 1 and ruler third 3 is provided with positioning button armor 13, location button second 31 respectively, and location button first 13, location button second 31 are male and female buttons. One side of ruler A 1, ruler B 2 and ruler C 3 is engraved with length scale A 14, length scale B 24, and length scale C 34 respectively, and the other side of ruler A 1 and ruler B 2 There is a section of protractor arc A 15 and protractor arc B 25 that bend toward the body of ruler A 1 and ruler B 2 respectively on the side, and both of protractor arc A 15 and protractor arc B 25 are a quarter Arc with the same arc radius.

Also be respectively provided with positioning buckle C 16, positioning buckle D 36 on ruler first 1, ruler third 3, the distance of positioning buckle third 16 to ruler first 1 and ruler second 2 connecting ends is equal to ruler first 1 length The distance from positioning button D 36 to the connecting end of ruler C 3 and ruler B 2 is equal to the length of ruler A 1 Positioning button third 16, location button Ding 36 are male and female buttons.

As shown in Figure 2, the positioning buckle A 13 is fastened with the positioning buckle B 31, the ruler A 1, the ruler B 2, and the ruler C 3 form a 45-degree triangle ruler, the protractor arc A 15, the protractor arc B 25 and the The side of ruler B 2 constitutes a protractor, protractor arc A 15, protractor arc B 25 are engraved with an angle scale, the midpoint position of the ruler B 2 sides is engraved with a protractor circle center mark 32, protractor arc A 15, The center of the protractor arc B 25 is located at the center mark 32 of the protractor.

As shown in Figure 3, ruler A 1, ruler B 2, and ruler C 3 are located on the same straight line to form an extended ruler, and length scale A 14, length scale B 24, and length scale C 34 are continuous scales. Length ruler.

As shown in Figure 4, the positioning buckle C 16 is fastened with the positioning buckle D 36, and a 60-degree triangle ruler is formed by the ruler A 1, the ruler B 2, and the ruler C 3.

As shown in Figure 5, ruler A 1, ruler B 2, and ruler C 3 are folded together for easy storage and carrying.

Claims (2)

1. a combination changeable ruler, it is characterised in that: include ruler first, ruler second, ruler third；Ruler first, ruler second, ruler third Length ratio beRuler second be respectively arranged at two ends with rotating shaft first, rotating shaft second, one end of ruler first, ruler third is respectively It is rotationally connected with ruler second by rotating shaft first, rotating shaft second；Ruler first is respectively equipped with location click beetle, location with the other end of ruler third Button second, location click beetle, locating button second are box and pin；Ruler first, ruler second, ruler third a side on be carved with long scale respectively Chi first, length scales second, length scales third, another side of ruler first, ruler second is respectively equipped with one section to ruler first, straight Blade side's inflexed protractor circular arc first, protractor circular arc second of chi second, protractor circular arc first, protractor circular arc second is four / mono-circular arc, arc radius is identical.

Combination changeable ruler the most according to claim 1, it is characterised in that: further respectively have on described ruler first, ruler third Locating button third, locating button fourth, the distance of locating button third to ruler first one end is equal to ruler first lengthLocating button fourth arrives The distance of ruler third one end is equal to ruler first lengthLocating button third, locating button fourth are box and pin.