CN87210175U - Drawing-ruler - Google Patents

Abstract

The utility model discloses a drawing-ruler which is used as a draughting instrument for drawing the engineering design drawing by hand. The manual drawing engineering design drawing is that a drawing level ruler which can move from top to bottom is arranged on a special drawing board, for drawing horizontal lines; the other straight lines are drew by making use of a set square and a protractor. The utility model is that a flexible movable vertical ruler and an angle measuring ruler are arranged on the level ruler; any horizontal line, perpendicular and skew line are directly and freely drew. The utility model has convenient use and installation and can be arranged on any flat plate table top.

Description

Drawing-ruler

All-round straight line drawing rule is used for the manual drawing project blue print, belongs to drawing instrument.

The engineering machinery designing and mapping, normally on chart board with T-square, set square and protractor manual draw various horizontal lines, vertical line and skew lines.In order to improve drawing efficiency and draught smanship, improved way is a (see figure 1): on special-purpose draughting board (A), the special horizon rule that has size scale (1) (the available T-square transformation of the way), horizon rule (1) two ends are set to be fixed on the chart board edge up and down with rope (4), (5) by pulley (6), (7), horizon rule (1) can pass through pulley (6), (7) and arbitrarily move up and down along rope (4), (5), thus the horizontal line of the optional position of drawing.This improved drawing horizon rule, it can only mark horizontal line, and vertical line and skew lines need draw, also need by means of set square and protractor or other instrument, this is still inconvenient, and this in addition drawing horizon rule generally is fixed on the special-purpose draughting board, and An Zhuan is with the use of Change position flexibly.

Task of the present utility model is a kind of drawing rule of design, with its can draw to direct convenience various horizontal lines, vertical line and skew lines at any angle, and can be installed in as required on any dull and stereotyped table top that needs to chart, installation, easy to use guarantees drawing quality.

This drawing rule is formed by having tolerance horizon rule, miter square, bevel protractor and transmission, travel mechanism scale, that can draw horizontal line, vertical line and arbitrarily angled skew lines respectively.

Accompanying drawing 2～4 has been represented specific embodiment of the utility model.

Fig. 1. the drawing horizon rule

Fig. 2. the all-round straight line drawing rule of band miter square

Fig. 3. the all-round straight line drawing rule of band bevel protractor

Fig. 4. the backguy schematic diagram of horizontal mobile mechanism

All-round straight line drawing rule shown in Fig. 2～4 is made up of horizon rule (1), miter square (2), bevel protractor (3) and horizon rule transmission mechanism, horizontal mobile mechanism.Rope yarn (4) is arranged at bottom, horizon rule (1) blade two ends, (5) and pulley (6), (7), rope yarn (4) is introduced from horizon rule (1) left end bottom, walk around to pulley (7) along pulley (6) top, walk around upwards along pulley (7) below again and draw from horizon rule (1) right-hand member top, rope yarn (5) is introduced from horizon rule (1) left end top, walk around to pulley (7) along pulley (6) below, walk around downwards along pulley (7) top and draw from horizon rule (1) right-hand member bottom, they constitute the transmission mechanism (same Fig. 1) of horizon rule (1).When four free ends of rope yarn (4), (5) divide after parallel opening fastens in the plane respectively up and down, it is arbitrarily steadily mobile up or down along rope yarn (4), (5) that horizon rule (1) just can pass through pulley (6), (7), the horizontal of can drawing line.

Miter square (2) or bevel protractor (3) link to each other with horizon rule (1) by pin (13), (14), and the horizontal mobile mechanism of miter square (2), bevel protractor (3) is made up of guide groove (21), pin (13), (14) on rope yarn (8), the pulley (9) that is fixed on bottom, horizon rule (1) blade two ends, (10), (11), (12), horizon rule (1) blade.Rope yarn (8) is the coiled figure of eight between pulley (9), (10), (11), (12), pin (13) or (14) (see figure 4) that is strained and fixed is passed at two ends, pin (13), (14) are fixed on the parallel up and down position of rope yarn (8) respectively, and are among two microscler guide grooves (21) on horizon rule (1) blade.When along continuous straight runs promoted miter square (2) or bevel protractor (3), they will arbitrarily move horizontally on the blade of horizon rule (1), thus vertical line, parallel lines or the skew lines parallel lines that can draw and need.Bevel protractor (3) (see figure 3) is made up of ruler (18), protractor (19) and connecting axle (20), protractor (19) straight flange has the metric size scale, there is angle index on the Ban Yuan limit, and it can rotate around connecting axle (20), thereby draws skew lines at any angle.Miter square (2) is gone up porose (15), (16), (17) (see figure 2), when miter square (2) is connected with pin (14), pin (13) respectively with the hole (15) of miter square (2), (16), (17) when being connected, miter square (2) and horizon rule (1) constitute 30 °, 45 °, 60 ° fixed elevation, the oblique long line of 30 °, 45 °, the 60 ° fixed angles that can draw.

All-round straight line drawing rule, the rope yarn (4) at horizon rule (1) two ends, four free ends of (5) according to the needs of drawing, can be fixed on any dull and stereotyped table top or are permanently secured on the special-purpose draughting board.

All-round straight line drawing rule, blade can use aluminium, lucite etc. or other metal, engineering plastics, make alone or in combination, and rope yarn can be to have certain intensity, be difficult for the flexible rope that stretches, for example the stainless steel steel wire rope of φ 0.2～φ 0.3 or other.

Be compared with existing technology, drawing-ruler, decapacitation is drawn outside the various horizontal lines, and various vertical lines and skew lines at any angle in addition draw. It can be fixed on any dull and stereotyped table top uses or permanent being fixed on the special-purpose draughting board used, and flexible for installation, and the Change position is easy to use, and the line segment of drafting is accurate, can satisfy the required precision of engineering design drawing fully.

Claims (2)

1, all-round straight line drawing rule, be used for the manual drawing project blue print, it by comprise can draw horizontal, the horizon rule (1) that has metric size, the transmission mechanism rope yarn (4) that horizon rule (1) can steadily be moved up and down, (5) and pulley (6), (7) form, feature of the present utility model is: have one can move horizontally arbitrarily and the miter square that size scale is arranged (2) of the vertical line that draws on the blade of horizon rule (1), or bevel protractor of the arbitrarily angled oblique line that draws (3) and horizontal mobile mechanism thereof, horizontal mobile mechanism is by rope yarn (8), be fixed on the pulley (9) of horizon rule (1) bottom, two ends, (10), (11), (12), bottom and rope yarn (8) but the fixing pin (13) of top fixed vertical chi (2) or angle (3), (14) and the guide groove (21) on horizon rule (1) blade form.Have on the miter square (2) with pin (13) to be connected hole (15), (16), (17) that can make 30 °, 45 °, 60 ° angles of miter square (2) constant tilt respectively, bevel protractor (3) by ruler (18), have the protractor (19) of metric size and angle, connecting axle (20) to form.

2, drawing rule according to claim 1 is characterized in that: four free ends of rope yarn (4), (5) can be fixed on any dull and stereotyped table top or be permanently secured on the special-purpose draughting board.