CN2257523Y

CN2257523Y - Multifunction drawing rule

Info

Publication number: CN2257523Y
Application number: CN 96234231
Authority: CN
Inventors: 钱兴斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-06
Filing date: 1996-02-06
Publication date: 1997-07-09
Anticipated expiration: 2006-02-06

Abstract

The utility model relates to a multifunction drawing rule which is mainly composed of a T square which is composed of a positioning plate and a main graduation rule, an angle protractor which can be arbitrarily slid on the main graduation rule, an auxiliary graduation rule whose one end can be rotated round the center of the angle protractor, etc. The utility model has the advantages of simple structure, easy fabrication, convenient operation and multiple functions. Various geometrical figures formed by any line segment arranged on a plane can be drawn without adding a set square and a protractor. The lines are accurate, the application range is wide, and the demand is large. The multifunction drawing rule is a handy drawing tool for the extensive scientific and technical personnel, teachers and students.

Description

A kind of multifunctional drawing ruler

The utility model belongs to a kind of drawing instrument.

Existing T-square, set square are that numerous students and scientific and technical personnel design requisite drawing instrument when drawing, but T-square can only be drawn horizontal line, mix a cover set square, the fixed lines in special angle such as vertical line and 30 °, 45 °, 60 ° also can only directly draw, all the other at any angle lines or arbitrarily the geometry formed of lines just can't directly finish, just can draw by protractor or by any 2 position on the calculating oblique line, this method is not directly perceived, bother again, and efficient is low.

The purpose of this utility model is to overcome the problems referred to above that existing T-square, set square exist and a kind of multifunctional drawing ruler that designs in drawing.

The secondary rule that the T-square that the method that the utility model is finished is made up of location-plate and master calibration chi, the Angle protractor that can slide arbitrarily on the master calibration chi, an end can rotate around the Angle protractor center etc. is formed.Lock-screw can make secondary rule be positioned on the Angle protractor, unclamp lock-screw, secondary rule can be swung arbitrarily in left and right each scope of 90 ° in the arc chute of Angle protractor, draw the function of ledgement except that possessing existing T-square, can also finish the existing irrealizable function of T-square, if with 90 ° graduation mark on the alignment of the center arrow on the secondary rule Angle protractor, secondary rule is just perpendicular to the master calibration chi, the Angle protractor that the horizontally slips vertical line that can draw; Demarcate the position if press the face flat seat, with the right-hand part of secondary rule at Angle protractor, during i.e. 0-90 ° of swing in the right, the interior arbitrarily angled lines of first and third quadrant just can draw, with the left side of secondary rule at Angle protractor, be left side 0-90 ° of when swing, just can draw second, the interior arbitrarily angled lines of four-quadrant; The parallel lines at any angle of inclination that can draw, the section lines are as drawing the hatching at 45 ° of inclinations angle, as long as earlier with the 45 ° of graduation marks of arrow alignment Angle protractor right panel on the secondary rule; As long as know the angle of inclination and the length on every limit of how much polygons, swing secondary rule and the amount of movement gusset geometry polygons of optional position that just can draw; As long as pen core is inserted in the aperture in the middle of the secondary rule, determine radius size, the revolute pair rule circular arc of some certain radius that can draw.

The utility model has the advantages that: simple in structure, make easily; Use, easy to maintenance; Function is many, the horizontal tilt angle that can draw on the plane lines at any angle or measure any lines; The equidistant parallel lines at any angle of inclination that can draw, the circular arc of the arbitrary triangle that can draw, flat shape quadrangle, polygon and certain radius; Adopt this multifunctional drawing ruler, can be without set square, protractor, any geometric figure that any sets of line segments becomes on the plane of drawing, lines are accurate; Be that researcher, the engineers and technicians of vast R﹠D institution, the teachers and students of universities an middle schools are used for the handy drawing instrument of design drawing; Widely applicable, demand is big, and market prospects are good!

Accompanying drawing 1 is an agent structure schematic diagram of the present utility model, and Fig. 2 is the vertical view of Fig. 1, and Fig. 3 is the left view of Fig. 1, and Fig. 4 is the A-A cutaway view.

Most preferred embodiment of the present utility model is: mainly form T-square by location-plate (01) and master calibration chi (02), an Angle protractor (03) that slides arbitrarily on the master calibration chi and an end can be formed around the secondary rule (04) that rotate at the Angle protractor center.Location-plate (01) is vertically fixed on of master calibration chi (02), utilizing sliding screw (12), lock nut (14) and pad (13) that Angle protractor (03) is installed is positioned on the master calibration chi, chute (15) adapted on sliding screw and the master calibration chi makes things convenient for Angle protractor to horizontally slip on the master calibration chi.Utilize the middle line three-way hole of secondary rule (04) one end and the central screw (05) of adapted secondary rule (04) to be installed on the central axle sleeve (07) of Angle protractor, the locking axle sleeve (08) that lock-screw (06) passes the middle line three-way hole on the secondary rule is sleeved in the semicircle chute of Angle protractor, tighten lock-screw, secondary rule just can be positioned on a certain graduation mark of angulation, unclamp lock-screw, each swing of 90 ° about secondary rule just can be done in semicircle chute scope.In order to eliminate the chute on the master calibration chi and the fit clearance of secondary rule, on left and right two jiaos of Angle protractor bottom, be equipped with and bump pearl (11) and spring (10), the size of elastic force is utilized the adjustment screw (09) of spring bottom to regulate to determine.

Claims

1, a kind of multifunctional drawing ruler, comprise protractor, T-square, screw, it is characterized in that location-plate (01) has of master calibration chi (02) of chute (15) in the middle of being vertically fixed on, Angle protractor (03) utilizes and the sliding screw (12) and lock nut (14) installation of chute adapted are positioned on the master calibration chi, secondary rule (04) utilize the through hole of an end and with it the central screw of adapted (05) central axle sleeve (07) that is installed in Angle protractor locate, the locking axle sleeve (08) that lock-screw (06) passes on the secondary rule through hole is sleeved in the semicircle chute of Angle protractor.

2, drawing rule according to claim 1, the Liang Jiaochu that it is characterized in that the Angle protractor bottom are equipped with the control device that the adjustment screw (09) by bumping pearl (11), spring (10) and regulating spring elastic force size of the fit clearance of eliminating major and minor rule is formed.