CN202491597U - Compasses - Google Patents

Abstract

The utility model discloses compasses, which comprise a fixed rod, a movable rod and a handle, wherein the fixed rod is connected with the movable rod at a top rotating shaft; a fixing needle is arranged at the bottom of the fixed rod; a pen cap is arranged at the bottom of the movable rod, and a drawing pen is arranged in the pen cap; each of the fixed rod and the movable rod has a nested telescopic structure; an elastic connecting sheet is arranged between the fixed rod and the movable rod; and length scales are drawn on the surface of the movable rod. The compasses are reasonable in design, convenient to use and wide in application range and facilitates drawing diagrams, and the length of the compasses can be adjusted as required.

Description

A kind of compasses

Technical fieldThe utility model relates to a kind of drawing instrument.

Background technologyCompasses are drawing instruments that people use always, but existing compasses are relatively simple for structure, and function is also single relatively, can not satisfy people's demand.

Summary of the inventionThe purpose of the utility model has provided a kind of graphing of being convenient to, and is easy to use, can regulate the compasses of length as required.

The utility model comprises fixed bar, motion bar and holds handle; Rotating shaft is connected fixed bar on the top with motion bar, and the fixed bar low side is provided with locking pin, and the motion bar bottom is provided with the pen cap; Be provided with drawing pen in it; Fixed bar and motion bar are the nested type Collapsible structure, are provided with flexible connection piece between the two, motion bar surface rendering length scale.

After adopting said structure; People can utilize it to draw various circles or circular arc, can regulate the length of two bodies of rod as required, can also be according to the drawing needs kind of change-fountain pen more; Utilize the length scale to measure; The flexible connection piece that stretches between two bodies of rod can play both angles of adjusting, prevents that start point is excessive, the phenomenon that can't set back fast.

The utility model compared with prior art has following advantage: reasonable in design, be convenient to graphing, and easy to use, can regulate length as required, applied widely.

Description of drawingsFig. 1 is the stereochemical structure sketch of the utility model.

The specific embodimentIn the stereochemical structure sketch of the utility model shown in Figure 1, comprise fixed bar 1, motion bar 2 and hold handle 3 that rotating shaft is connected fixed bar 1 on the top with motion bar 2; Fixed bar 1 bottom is provided with locking pin 4; Motion bar 2 bottoms are provided with the pen cap 5, are provided with drawing pen 6 in it, and fixed bar 1 is the nested type Collapsible structure with motion bar 2; Be provided with flexible connection piece 7 between the two, motion bar 1 surface rendering length scale 8.

Claims (1)

1. compasses comprise fixed bar (1), motion bar (2) and hold handle (3), it is characterized in that: rotating shaft is connected fixed bar (1) on the top with motion bar (2); Fixed bar (1) bottom is provided with locking pin (4); Motion bar (2) bottom is provided with the pen cap (5), is provided with drawing pen (6) in it, and fixed bar (1) and motion bar (2) are the nested type Collapsible structure; Be provided with flexible connection piece (7) between the two, motion bar (1) surface rendering length scale (8).

Images