CN2183273Y

CN2183273Y - Multi-purpose ruler

Info

Publication number: CN2183273Y
Application number: CN 94207182
Authority: CN
Inventors: 吴怀清
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-08
Filing date: 1994-03-08
Publication date: 1994-11-23
Anticipated expiration: 2004-03-08

Abstract

The utility model relates to a multi-purpose ruler, belonging to a drawing tool. The utility model is characterized in that a main ruler 1 uses a protractor 12 as a ruler head, and a concentric circle arc groove 10 is arranged on the protractor 12. An auxiliary ruler 2 is a straight ruler, and the ruler head position is provided with the center of a circle which is the same as the center of the circle of the arc diameter and the arc groove 10, and an arc angle indicating ruler 11 which is provided with the same arc diameter. A screw rod 13 is arranged on the angle indicating ruler 11 which is enchased in the arc groove 10 and is tightly fixed by a nut 3. A rotary handle 5 is fixed on the outer edge groove of the protractor 12 through a rotary handle seat 4. The utility model can draw a straight line, a circle, an arc and arbitrary angle in 0 DEG-360 DEG, and can measure the angle of the arbitrary angle. The multi-purpose ruler has multipurpose, and the drawing speed can be enhanced.

Description

Multi-purpose ruler

A kind of multipurpose ruler, the utility model belongs to drawing instrument.

Present existing drawing instrument is more scattered, such as independent ruler, set square, protractor, unit's rule etc.The function singleness or the function of these drawing instruments are less, must use multiple instrument just can finish the drafting of straight line, angle, circle and arc during drawing, therefore, have caused and have used the inconvenience that goes up and carry.

The purpose of this utility model is to collect the function of ruler, set square, protractor, unit's rule in a chi, and it can be used by a chi more.

Feature of the present utility model is made up of main scale 1 and secondary chi 2 two parts, main scale 1 is the chi head with protractor 12, have the arc groove 10 of concentric on the protractor 12, secondary chi 2 is a ruler, there is a center of circle and the arc footpath arc angle cuing scale 11 identical with the arc footpath with the center of circle of arc groove 10 at its chi head place, screw rod 13 is arranged on the angle cuing scale 11, the limit of angle cuing scale 11 is concordant with the inner edge of secondary chi 2, angle cuing scale 11 edges advance in the arc groove 10, and by secondary chi move control nut 3 tighten up, swing handle 5 is fixed on the outer groove of protractor 12 by swing handle seat 4.

Below in conjunction with accompanying drawing the utility model is specified:

Fig. 1: multipurpose ruler structural representation.

Multipurpose ruler is made of main scale 1 and secondary chi 2.Main scale 1 is the chi head with protractor 12, on protractor 12, have the arc groove 10 of concentric, secondary chi 2 is rulers, there is a center of circle and the arc footpath arc angle cuing scale 11 identical with the arc footpath with the center of circle of arc groove 10 at its chi head place, screw rod 13 is arranged on the angle cuing scale 11, and the limit of angle cuing scale 11 is concordant with the inner edge of secondary chi 2.Angle cuing scale 11 is bumped in the arc groove 10, screw on secondary chi and move control nut 3, rely on angle cuing scale 11 to move with cooperating of arc groove 10, the center of circle that the inner edge of the inner edge of main scale 1 and secondary chi 2 just can protractor 12 is the crossing motion of 0 °-180 ° in crosspoint work.Because the arc of the angle cuing scale 11 of secondary chi 2 footpath is identical with the arc footpath of the arc groove 10 of main scale 1, and coincides together again, thus when the motion of 0 °-180 ° in the work arc groove 10 of angle cuing scale 11 at main scale 1 of secondary chi 2 in, they right center of circle unanimity all the time.

When the angle cuing scale 11 of secondary chi 2 is in 0 ° of position on the protractor 12 of main scale 1, parallel being close to of inner edge (being the circle centre position of chi pin) of inner edge of secondary chi 2 (be the chi pin to chi in zero millimeter numeral place) and main scale 1 to protractor 12; When in the arc groove 10 of angle cuing scale 11 at main scale 1 of secondary chi 2 when mobile, the inner edge of secondary chi 2 and the inner edge of main scale 1 are that motion is done to intersect in the crosspoint with the center of circle of protractor 12 just, the angle cuing scale 11 of at this moment secondary chi 2 to the number of degrees on the protractor 12 of main scale 1, the chi head inner edge that is the chi head inner edge of main scale 1 and secondary chi 2 is the angle number of summit institute angle with the center of circle of protractor 12, just the chi pin inner edge of the chi pin inner edge of main scale 1 and secondary chi 2 is the angle number (promptly two straight lines intersect, and vertical angles equate) of summit institute angle with the center of circle of protractor 12.When the angle cuing scale 11 of secondary chi 2 is in 180 ° of positions on the protractor 12 of main scale 1, the inner edge of the inner edge of secondary chi 2 and main scale 1 in line, promptly secondary chi 2 constitutes a long ruler with main scale 1.

Swing handle 5 is fixed on by swing handle seat 4 on the outer groove of protractor 12, can make swing handle 5 be positioned at the center of chi pin when arbitrarily angled of the chi pin and the secondary chi 2 of main scale 1 by swing handle seat 4, so that draw circle and arc exactly.At the chi pin head place of main scale 1 and secondary chi 2, pass through screw rod 6 and nut 7 fixedly draw point pin 9 and lead for retractable pencil 8 respectively.

Any opening angle between the arc groove 10 of the utility model throughput hornwork 12 and the chi pin that moves the chi pin of finishing main scale 1 and secondary chi 2 cooperating of angle cuing scale 11, and by moving the shift position of control nut 3 fixed joint chis 2 and main scale 1.Use this chi can not only draw arbitrarily angled between straight line, circle, arc and 0 °-360 ° and the angle at any angle of energy measurement.Utilize this chi can improve plotting speed, easy to use flexible, make a chi play multiple functions.If main scale and secondary chi are all used the metal manufacturing, metal strength height, good toughness can reduce the use distortion of multipurpose ruler, improve the service precision of multipurpose ruler.

Claims

1, a kind of multipurpose ruler, it is characterized in that forming by main scale (1) and secondary chi (2) two parts, main scale (1) is the chi head with protractor (12), have the arc groove (10) of concentric on the protractor (12), secondary chi (2) is a ruler, there is a center of circle and the arc footpath arc angle cuing scale (11) identical with the arc footpath with the center of circle of arc groove (10) at its chi head place, screw rod (13) is arranged on the angle cuing scale (11), the limit of angle cuing scale (11) is concordant with the inner edge of secondary chi (2), angle cuing scale (11) edge advances in the arc groove (10), and by secondary chi move control nut (3) tighten up, swing handle (5) is fixed on the outer groove of protractor (12) by swing handle seat (4).