CN201061958Y - Sucker calipers - Google Patents

Abstract

The utility model discloses a compass with a sucker, which comprises a sucker, a graduated scale, and a pen clip. The sucker is movably connected with the graduated scale, the pen clip can be freely slide on the graduated scale, and the graduated scale can be freely rotated around the sucker. The utility model has the advantages that a circle center is easily to be fixed when a circle is drawn, the operation is greatly convenient, and the radius of the circle is extremely precious, and the accuracy and the quality of circle drawing can be improved. The series products of the compass have strong practicability, and wide-ranging use.

Description

Sucker compass

Technical field

The utility model relates to a kind of drafting instrument, particularly relates to the instrument of the picture circle of teaching and work.

Background technology

Traditional both legs compasses mainly are made of two angles and handle, draw the bowlder center of circle and move easily; Because each connecting portion of traditional compasses is movable relatively, and radius size is not easy control, and precision is relatively poor, also can shoes when drawing than great circle; Traditional round programming circular velocity is slow, if draw the circle of certain radius, will measure radius on ruler with compasses in advance, and then draws circle; Function singleness; The tradition compasses have wedge angle, carry inconvenience, also can scratch desktop sometimes or scratch finger.

The utility model content

At above-mentioned defective, the purpose of this utility model provides that a kind of precision is higher, the center of circle is stable, draw bowlder speed sucker compass fast, easy to carry.

This sucker compass is made of sucker, rule and pen clip, and pen clip can slide along rule, and to determine drawn radius of a circle, an end of rule is connected with sucker, and rule can freely rotate around sucker.

The pen clip of sucker compass is at least one, and when drawing concentric circles if desired, the pen clip on the rule is two or more.If pen clip is two or more, pen clip can also can be positioned at the both sides of sucker in a side of sucker.

At different panel upper drawing circles, sucker can adopt suitable material to make according to the character of panel.Generally, the sucker of sucker compass is an elastomeric material, and this elastomeric material can be a rubber, also can be plastics.When being used for the student and learning to use compasses, its sucker is a suction spindle.According to actual needs, the compasses sucker also can be a magnetic material.

Advantage of the present utility model is drawn the bowlder center of circle and is stablized easily, and easy to operate, it is very accurate to draw the bowlder radius of a circle, has improved the precision and the quality of drawing circle, and these compasses series of products are practical, in extensive range.

Description of drawings

Fig. 1 is the sucker compass of a pen clip.

Fig. 2 is the sucker compass of two pen clips.

As shown in the figure: 1 sucker, 2 rules, 3 pen clips, 4 or pen core, 5 circles

The specific embodiment

As shown in Figure 1 and Figure 2, sucker compass is by sucker 1, rule 2 and can forming along pen clip 3 three parts that rule slides, the sucker 1 of sucker compass is to be used for determining home position, and play fixedly center of circle effect drawing bowlder, and sucker 1 is flexible connections with rule 2, rule 2 can freely rotate around sucker 1, rule 2 is to be used for determining drawn radius of a circle, and promptly the distance between pen clip and the sucker is a radius.

Drawing bowlder, pen or pen core 4 are clipped on the pen clip 3 of sucker compass, sucker 1 is inhaled on panel, is the center of circle with sucker 1, is radius with the distance of rule 2 and sucker 1, and rule 2 rich suckers 1 rotate a circle, and promptly obtain drawn circle.

Embodiment 1

Sucker compass as shown in Figure 1, pen clip 3 on its rule 2 is one, drawing bowlder, pen core is clipped on the pen clip 3, determine the home position of good drawn circle, sucker 1 aimed at the center of circle inhale on drawn panel that pen clip 3 slides and adjusts to required radius scale size place, rule 2 is rotated a circle around sucker, promptly obtain drawn circle.

Embodiment 2

Sucker compass as shown in Figure 2, when drawing two concentric circles, pen clip 3 on the rule 2 is two, two pen clips 3 are all pressed from both sides pen core, determine the home position of good drawn circle, sucker 1 is aimed at the center of circle inhale on drawn panel, regulate drawn concentrically ringed radius, pen clip 3 slided adjust to required radius scale size place, rule 2 is rotated a circle around sucker, promptly obtain drawn concentric circles.

Based on above thinking, do not breaking away from improvement or the innovation of being done on the basis of the utility model design, all belong to the scope of protection of the present utility model.

Claims (3)

1. sucker compass, it is characterized in that: this sucker compass is made of sucker (1), rule (2) and pen clip (3), described pen clip (3) can slide along rule (2), and an end of described rule (2) is connected with sucker (1), and rule (2) can rotate around sucker (1).

2. according to the described sucker compass of claim 1, it is characterized in that: described sucker (1) is an elastomeric material.

3. according to the described sucker compass of claim 1, it is characterized in that: described sucker (2) is a magnetic material.

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