CN2365078Y

CN2365078Y - Geometric gauge

Info

Publication number: CN2365078Y
Application number: CN 99230744
Authority: CN
Inventors: 罗明华
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-12
Filing date: 1999-01-12
Publication date: 2000-02-23
Anticipated expiration: 2009-01-12

Abstract

The utility model relates to a multifunctional drawing tool with the functions of drawing various geometric figures and adjustable sizes and proportion. In the utility model, a centre pin is fixedly connected with an orienting arm which is connected with an orienting foot; a foot pin is arranged below the orienting foot; an elastic force cross link device which is connected with a drawing rod and a drawing pen is sheathed in the middle of the centre pin; a fixed type wheel which can move up and down is installed on the lower side. When the centre pin and the orienting foot are positioned, the drawing rod which rotates close to the type wheel rotates 360 DEG under the action of centripetal elastic force to form a geometric figure, such as an ellipse, an involute and equal division angles. The elastic force cross link device and the centre pin are fixed, the foot pin is folded, and the center pin rotates 360 DEG to form a regular circle.

Description

How much rule

The present invention relates to a kind of drafting instrument, the geometry of can draw all size, ratio.

At present, when drawing various geometric figure, need instruments such as compasses, chi, curve ruler, the flower multiple working procedure just can be finished one section line or a pattern, and work is renderd a service very low, and the connection between the circular arc is unsuitable tangent.

The invention provides a kind of how much rule, its can draw the easily ellipse of all size, ratio, just circle, involute and polygonal, and mix up once, numerous similar line or figure repeatedly just can draw.

The object of the present invention is achieved like this: the type wheel that can fix up and down is equipped with in a center needle lower end, one prevents that the type wheel from rotating, the radius arm top loading that has directed pin and pin pin is (as omnidirectional pin and pin pin, figure is easy to shake, distortion), one lower end is connected with the elastic force commissure of picture bar and paintbrush, is enclosed within the centre of center needle, (as no picture bar, the shape of also can drawing, but the ratio that can not regulate figure).When center needle and directed pin are reserved the position, the directed pin of a stick shift; Rotate on the other hand under elastic force effect entad near 360 ° on the picture bar of type wheel rotation, just finished a geometric figure.Because of the turning point of drawing bar not on centre bit, so it is inconsistent that type is taken turns the enlargement ratio at each position, and the shape briquetting roller is in the ratio difference fixedly time the up and down.As drawing when oval, regulate the upper-lower position of elliptic wheel and the angle of drawing bar and paintbrush, just the size of convertible ellipse, ratio.Equally elliptic wheel is changed into the multiangular wheel of screw type wheel or five jiaos, hexagonal, involute, each polygon that just can easily draw all size at once.Elastic force commissure and center needle are fixed; Pack up the pin pin; The pivot pin just forms a positive circle for 360 °.

Since adopt such scheme, can be quick and convenient when drawing or blanking, and rule are used more.

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a structure chart of the present invention

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the schematic diagram of the present invention when picture is taken turns littler shape than type.

Fig. 4 is that the present invention is at the shape schematic diagram of drawing positive bowlder.

Fig. 5 is the helical wheel component diagram

Fig. 6 is multiangular wheel component figure

Fig. 7 is that elliptical shape changes schematic diagram

1. center needles 2. are drawn 7. elastic force commissure 8. spring leafs 9. spring catch 10. rotating handles 11. types wheel screw 12. paintbrush screws 13. commissure screws 14. radius arms 15. packing rings 16. back-up rings 17. paintbrush joints of bar 3. directed pin 4. pin pins 5. paintbrushes 6. ellipses wheels (abbreviation type wheel) among the figure

Shown in Figure 1, rotating handle (10) is housed on the center needle (1) successively, radius arm (14), packing ring (1 5), elastic force commissure (7), back-up ring (16), ellipse wheel (6), its (1) and (14), (10) be fixedly connected, radius arm (14) and directed pin (3), pin pin (4) is commissure successively, elastic force commissure (7) and picture bar (2), paintbrush joint (17), paintbrush (5) is linked in sequence, its paintbrush screw (12) is to regulate the picture pole length, and when changing various pen and use with pin, when commissure screw (13) is the positive bowlder fixed center of picture pin and use, spring leaf (8) plays and pushes up effect to center needle all the time with drawing bar and paintbrush, by spring catch (9) it is fixed on elastic force commissure (7) centre, type wheel screw (11) plays when adjustment type wheel high and low position, and the type wheel is fixed on the plane of center needle one side.Back-up ring (16) has been fixed the lower position of elastic force commissure.

Shown in Figure 3, need only paintbrush to the bending of center needle direction; Put down the type wheel, just can draw than the littler figure of type wheel.

Shown in Figure 4, pack up pin pin (4), tighten commissure screw (13), rotate rotating handle (10), it is just round to draw.

Claims

1. a geometry is advised, include center needle, radius arm, elastic force commissure, paintbrush, it is characterized in that: center needle is fixedlyed connected with radius arm, and the elastic force commissure that has paintbrush is enclosed within the middle of the center needle, rotatable and fixing, below a type wheel that can move up and down, fix, change is contained in.

2. how much rule as claimed in claim 1 is characterized in that described radius arm is the radius arm that has directed pin and foldable pin pin.

3. how much rule as claimed in claim 1 is characterized in that between described elastic force commissure and the paintbrush it being to be formed by connecting by drawing bar paintbrush joint.

4. how much rule as claimed in claim 1 is characterized in that described paintbrush is the paintbrush of various pen types of interchangeable and pin.

5. how much rule as claimed in claim 1 is characterized in that described type wheel is the ellipse wheel.

6. how much rule as claimed in claim 1 is characterized in that described type wheel is an involute type wheel.

7. how much rule as claimed in claim 1 is characterized in that described type wheel is the multiangular wheel.