CN2191775Y

CN2191775Y - Compasses

Info

Publication number: CN2191775Y
Application number: CN 93246574
Authority: CN
Inventors: 王世波
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-30
Filing date: 1993-12-30
Publication date: 1995-03-15
Anticipated expiration: 2003-12-30

Abstract

The utility model relates to a drawing instrument. Two arms of a pair of compasses are replaced by rigid-body scales with graduations of standard length, the upper end of the scale 1 is a protractor, and the upper end of the scale 2 is provided with two orthogonal indication ribs. When in drawing, the two arms are parted so as to draw circles and circle arcs and are placed flat against a drawing surface so as to read out angles or draw needed angles. The utility model has the advantages of simple structure and one object with multiple functions and is rapid, accurate and time-saving in drawing.

Description

Compasses

The utility model relates to a kind of drawing instrument, particularly relates to a kind of compasses.

Present compasses have only the circle of drawing and circular arc line function, and for a complete drawing, it not only relates to circle and circular arc, and relate to line segment, angle etc.

The purpose of this utility model is a kind of multifunctional compass of drawing circle and line segment and angulation that integrates of design.

The technical solution of the utility model is to use the

rigid body ruler

1 and 2 that has the full-length scale to replace on two arms of compasses, and the upper end of rule 1 is a protractor A, and there are two orthogonal cuing scale rib ab and cd in the upper end of rule 2;

Rule

1 and 2 is to be hinged, and axle sleeve is terminal to be limited with a nut, and there is an eyehole 4 at the center of pillow block B, and overlaps with the center of circle; 90 ° of lines (horizontal line) of protractor and rule 1 are vertical with 2 bc interior along the line, and the center of circle of crossing interior along the line of two rules.

Below in conjunction with accompanying drawing 26S Proteasome Structure and Function of the present utility model is further described.

Accompanying drawing (1) is the utility model structural representation;

Accompanying drawing (2) be rule 1 just, the right flank schematic diagram;

Accompanying drawing (3) be rule 2 just, the left surface schematic diagram;

Accompanying drawing (4) is the utility model user mode schematic diagram.

Shown in accompanying drawing (1), the utility model main body is coupled together by axle sleeve 3 by rule 1 and rule 2, in the lower end of two rules, pin pin 5 and rule pin paintbrush 6 are fixed on the rule pin 8 by flat head screw 7, and stem 9 covers are connected in pillow block B and go up and can rotate around axis.

Shown in accompanying drawing (2), the upper end of rule 1 is a protractor A, the interior center of circle of crossing protractor along bc of rule 1, one hollow pillow block B is arranged at position, the center of circle, the hollow position of B is an eyehole 4, and window 4 overlaps with the center of circle, and 90 ° of lines of protractor (horizontal line) are vertical with graduation mark bc.

As shown in Figure 3, axle sleeve 3 is bindiny mechanisms of rule 2 and rule 1, during two scale combinations, axle sleeve 3 tightly is enclosed within on the pillow block B, and can rotate around axis, and there are two orthogonal chi rib ab and ed in rule 2 upper ends, when these compasses separate angle in 0-90 ° of scope the time, ab chi rib can be indicated angle, and when separately angle was at 90-180 °, ed chi rib can be indicated angle.The use of special angle can be drawn for the drawing personnel in the folded 30 ° of angles of ed and df in addition.The thickness of the cg section of rule 2 is identical with the thickness of two rule pin 8, is enough to keep these compasses can surely lean on drawing and tilting does not take place when drawing straight line.

As shown in Figure 4, separate compasses two arms during use, regulate pin pin 5 and stem 9, can draw circle and circular arc; But compasses keep flat the setting-out section; When drawing the angle or reading angle, keep flat compasses, make window 4 overlap the location, regulate two rules, the promptly readable angle and the required angle of drawing with the angle end points.

The utility model is simple in structure, and the many usefulness of rule are quick and accurate when especially drawing the angle and reading the angle.

The utility model also can be made into teaching aid and student appliance, can make the teacher exempt to be with other drawing tools, and it is convenient and time-saving to draw on the blackboard; It is fast accurate that the student is figure.

Claims

1, a kind of multifunctional compass, its two arms are the rigid body rulers that have the full-length scale, it is characterized in that: the upper end of rule (1) is a protractor A, there are two orthogonal cuing scale rib ab and ed in the upper end of rule (2), rule (1) and rule (2) are hinged, axle sleeve is terminal to be limited with a nut, and there is an eyehole (4) at the center of pillow block B, and overlaps with the center of circle;

2, a kind of multifunctional compass as claimed in claim 1 is characterized in that 90 ° of lines of protractor are vertical with the bc interior along the line of rule (2) with rule (1), and the center of circle of crossing interior along the line of two rules.