CN203126270U - Multipurpose compasses - Google Patents

Abstract

The utility model discloses multipurpose compasses and belongs to stationery. The multipurpose compasses comprise a gripping handle, a fixed rod and a rotary rod. The fixed rod and the rotary rod are connected through a rotary shaft. The gripping handle is arranged at the upper end of the rotary shaft. A needle tip is arranged at the lower end of the fixed rod. The upper end of the rotary rod and the lower end of the rotary rod are respectively provided with a rotary shaft. Connecting rods are fixed on the rotary shafts. The other ends of the connecting rods are provided with round clamps. A pencil is fixed in the clamps. Screws are arranged on the outer sides of the clamps to carry out fixing. Two clamps are arranged on the compasses to fix the pencil firmly. One pencil is installed on each clamp, and therefore a circular ring shape can be drawn once, and drawing efficiency is improved.

Description

A kind of Napier's compasses

Technical field

The utility model relates to a kind of stationery, specifically a kind of Napier's compasses.

Background technology

Often will use compasses when people draw geometric figure, the pencil on the compasses is generally common propelling pencil, the pen core frangibility, and the person's handwriting that has is also clear inadequately.Pencil with 2B hardness is frangibility not, has a clear handwriting, and with mark hardly behind the erased by rubber, but traditional compasses can't directly be installed pencil, or installs fixing not firm, especially new pencil behind the pencil, and length is oversize, is difficult for fixing.And traditional compasses annular that can't disposablely draw.

The utility model content

The purpose of this utility model is to provide a kind of Napier's compasses, and these compasses are provided with two retainer plates, and fixedly pencil is more firm, and these compasses annular that can disposablely draw.

The technical scheme in the invention for solving the technical problem is: a kind of Napier's compasses, comprise handle, fixed bar and dwang, and described fixed bar is connected by a rotating shaft with dwang, and the rotating shaft upper end is provided with handle; Needle point is installed in the fixed bar lower end, and the dwang upper/lower terminal is respectively established a rotating shaft, and connecting rod is fixedly arranged in the rotating shaft, and the other end of connecting rod is provided with circular clip, and pencil is fixedly arranged in the clip, and the clip outside is equipped with screw and fixes.

The beneficial effects of the utility model are: these compasses are provided with two clips, can more firmly pencil be fixed; Can also a pencil be installed at each clip, the annular that can disposablely draw improves drawing efficiency.

Description of drawings

Fig. 1 is structural representation of the present utility model.

View when Fig. 2 installs two pencils for the utility model.

Among the figure: 1 handle, 2 fixed bars, 3 dwangs, 4 rotating shafts, 5 clips, 6 screws, 7 needle points, 8 pencils, 9 connecting rods.

The specific embodiment

As shown in Figure 1.A kind of Napier's compasses comprise handle 1, fixed bar 2 and dwang 3, and described fixed bar 2 is connected by a rotating shaft 4 with dwang 3, and rotating shaft 4 upper ends are provided with handle 1; Needle point 7 is installed in fixed bar 2 lower ends, and dwang 3 upper/lower terminals are respectively established a rotating shaft, and connecting rod 9 is fixedly arranged in the rotating shaft, upper end connecting rod 9 is slightly long than the lower end connecting rod, the other end of connecting rod 9 is provided with circular clip 5, in the clip 5 pencil 8 is arranged fixedly, and clip 5 outsides are equipped with screw 6 and fix.

These compasses are provided with two clips, can more firmly pencil 8 be fixed, and also can use more convenient by the angle of screw and rotation shaft regulated pencil 8.

As shown in Figure 2.When needing the picture annulus, put long pencil earlier in the clip with the upper end, put short pencil again in the clip with the lower end, regulate two connecting rods 9 and make between two pencils 8 to suitable distance, two tip of a pencils and needle point 7 keep sustained heights, can the disposable annulus that draws.

Claims (1)

1. Napier's compasses comprise handle, fixed bar and dwang, and described fixed bar is connected by a rotating shaft with dwang, and the rotating shaft upper end is provided with handle; Needle point is installed in the fixed bar lower end, it is characterized in that the dwang upper/lower terminal is respectively established a rotating shaft, and connecting rod is fixedly arranged in the rotating shaft, and the other end of connecting rod is provided with circular clip, and pencil is fixedly arranged in the clip, and the clip outside is equipped with screw and fixes.

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