Compass double-leg distance locking method

Abstract

The invention discloses a compass double-leg distance locking method. The method comprises the following steps that 1, a handle is linearly slidably connected in a compass head of a compass, the handle is in transmission connection with two compass legs of the compass through a mechanism, and therefore the handle slides in the compass head when the size of the included angle of the two compass legs changes; 2, the handle and the compass head are fixed together when the included angle between the two compass legs is adjusted to a required angle, and the handle and the compass head are kept fixed relatively. By using the method, the pretightening force of the compass head can be reduced, when the compass is opened and closed, the two compass legs are easy to break off, more labor is saved during use, when the distance between the compass legs is adjusted, the handle is not limited, the compass legs can be quickly opened and closed, the handle and the compass head are fixed again when thedistance between the compass legs is locked, and use is more convenient.

Description

technical field [0001] The invention relates to the field of stationery, in particular to a method for locking the distance between the feet of a compass. Background technique [0002] When using a compass, you need to separate the two legs of the compass to the required distance. The above-mentioned distance refers to the distance between the free ends of the two compass legs, and then pinch the head of the compass to draw a circle. The angle between the two feet may change, and the change of the angle will cause the distance between the two compass feet to change, resulting in the failure of drawing a circle. In order to overcome the above technical problems, direct control of the compass feet is usually used in the prior art The most common way to maintain the distance between the feet of the compasses is to increase the pre-tightening force of the compasses head or to open threaded holes on the two feet of the compasses, and to add additional restrictions such as screws ...

AI Technical Summary

Problems solved by technology

[0002] When using a compass, you need to separate the two legs of the compass to the required distance. The above-mentioned distance refers to the distance between the free ends of the two compass legs, and then pinch the head of the compass to draw a circle. The angle between the two feet may change, and the change of the angle will cause the distance between the two compass feet to change, resulting in the failure of drawing a circle. In order to overcome the above technical problems, direct control of the compass feet is usually used in the prior art The most common way to maintain the distance between the feet of the compasses is to increase the preload of the head of the compasses or to open threaded holes on the two feet of the compasses, and to add additional restrictions such as screws to limit the opening and closing of the feet of the compasses. When the pre-tightening force is increased, the legs of the compasses are not easy to separate when drawing a circle. The resistance of the legs of the compasses when they are opened and closed is relatively large, so it is more laborious to use, and the method of adding screws is more effective in use When you need to turn the screw to adjust, the adjustment is slow and the operation is inconvenient

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