CN201320904Y - Novel compasses - Google Patents

Abstract

The utility model relates to a novel compasses, which comprises a needle pointer, a pen point, a connecting rod and a fixing frame, wherein the needle pointer penetrates through the fixing frame; the outer wall of the fixing frame is provided with a transverse inserting rod; and the top end of the inserting rod is an elastic hook. The connecting rod is a straight rod; a slot is arranged along the axle wire of the long side; the slot corresponding to the outer wall is provided with through holes which are communicated in equidistance; the through holes are marked with length scales; and the pen point is connected along the surface of the long side of the connecting rod in a sliding way. When the novel compasses is used, users insert the transverse inserting rod arranged on the fixing frame into the slot arranged on the connecting rod, and the through holes arranged on the surface of the connecting rod are clamped by the elastic hook; the distance from the through hole to the needle pointer is equal to the radius length of a circle to be drawn; then, the pen pointer slides to the inserting hole; and finally, the needle pointer is installed and the connecting rod is rotated, and circular patterns can be drawn by the pen point. The utility model has the advantages of peculiar function, convenient operation, high stability, convenience, practicality and the like.

Description

New-type compasses

Technical field

The utility model relates to a kind of drawing instrument, especially a kind of new-type compasses.

Background technology

As everyone knows, compasses are drawing instruments commonly used during people learn, work., present compasses all adopt two rotation pin movable connection structures, though this kind structure can enlarge radius measurement, it is loosening to be easy to generation when drawing, and the result that causes drawing exists than mistake, influences precision.In order to address the above problem, we provide a kind of new-type compasses.

Summary of the invention

The purpose of this utility model provides a kind of new-type compasses, is used to solve problems such as common compasses are loosening easily, the drafting error is big.

For achieving the above object, the new-type compasses of the utility model comprise pointer, nib, connecting rod and fixed mount, and pointer runs through fixed mount, fixed mount outer wall cross machine inserted link, and the inserted link top is processed with elastic hook; Connecting rod is the direct rod shape structure, offers slot along axis, long limit, and equidistantly offers the open-work that communicates, through-hole position marking length scale value at the corresponding slot of outer wall; Inserted link assigns in the connecting rod, and the gib head of elastic hook hangs over through-hole position; Nib is slidingly connected along surface, the long limit of connecting rod.

After adopting said structure, during use, the user inserts the horizontal inserted link on the fixed mount in the slot of connecting rod, and block the open-work on connecting rod surface with elastic hook, need to guarantee that open-work to the distance of pointer equals to wait to paint circular radius length, slide nib then to this jack position, assign pointer at last, the just available nib of the bar that is rotatably connected draws circular pattern.

Compared with the prior art, the beneficial effects of the utility model are: function is peculiar, easy and simple to handle, stability is high, convenient and practical, can avoid loosening problem, improves drafting accuracy.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the new-type compasses of the utility model.

Number in the figure: 1 be pointer, 2 for nib, 3 for connecting rod, 4 for fixed mount, 5 for inserted link, 6 for slot, 7 for open-work, 8 for elastic hook, 9 for the length scale value.

The specific embodiment

As shown in Figure 1, the new-type compasses of the utility model comprise pointer 1, nib 2, connecting rod 3 and fixed mount 4, and pointer 1 runs through fixed mount 4, fixed mount 4 outer wall cross machine inserted links 5, and inserted link 5 tops are processed with elastic hook 8; Connecting rod 3 is the direct rod shape structure, offers slot 6 along axis, long limit, and equidistantly offers the open-work 7 that communicates, open-work 7 places marking length scale value 9 at the corresponding slot 6 of outer wall; Inserted link 5 assigns in the connecting rod 3, and the gib head of elastic hook 8 hangs over open-work 7 places; Nib 2 is slidingly connected along surface, connecting rod 3 long limit.

Claims (1)

1, a kind of new-type compasses, comprise pointer (1), nib (2), connecting rod (3) and fixed mount (4), it is characterized in that: pointer (1) runs through fixed mount (4), fixed mount (4) outer wall cross machine inserted link (5), and inserted link (5) top is processed with elastic hook (8); Connecting rod (3) is the direct rod shape structure, offers slot (6) along axis, long limit, and equidistantly offers the open-work (7) that communicates at the corresponding slot of outer wall (6), and open-work (7) is located marking length scale value (9); Inserted link (5) assigns in the connecting rod (3), and the gib head of elastic hook (8) hangs over open-work (7) and locates; Nib (2) is slidingly connected along surface, the long limit of connecting rod (3).

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