DE8909014U1 - Drawing aid for drawing broken lines without lifting the pen - Google Patents

Description

Title: Drawing aid for drawing broken lines without lifting the drawing pen.

The present innovation concerns a drawing tool for drawing broken lines.

When making technical drawings, it is often necessary to symbolize elements using broken or dotted lines in addition to continuous lines drawn with the aid of a ruler, curve ruler or stencil. These broken lines require particular skill from the draftsman because he often has to follow the symbol and, in particular, has to pay close attention to maintaining consistent distances between the dots and/or lines on a line. Drawing broken lines is therefore very time-consuming.

The aim of the present innovation was to create a drawing aid with which it is possible to draw a broken line, i.e. a line consisting of dots and/or lines arranged one after the other, in a simple manner without having to lift and lower the drawing pen several times, whereby both curved and straight lines are to be included. This aim is achieved by a drawing aid of the type mentioned at the beginning, the characteristic features of which are that it comprises a self-supporting shaped body which contains at least one groove for receiving a drawing pen, and that a flank is arranged in at least one area of the groove near the edge, through which the width of the groove is reduced in the direction of the drawing matrix, whereby elevations are arranged at intervals on the upper side of the flank facing away from the drawing matrix.

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The self-supporting molded body is in particular a template which can be made of wood or plastic or another suitable material such as metal, preferably it is made of plastic. The groove within the template can optionally form a straight or curved line or it can be a self-contained curve, e.g. a circle or an ellipse. The flank, which is preferably made of the same material as the template, has a height which ensures that the drawing pen following the course of a groove always reaches the drawing matrix. The height of the flank is defined as the distance of the top of the flank from the drawing matrix when the template is placed in its intended position on a drawing matrix. Elevations are preferably arranged at regular intervals on the top of the flank. The elevations do not have any sharp-edged projections, but are designed as curves, the height of which, measured from the top of the flank, is such that the drawing pen following the course of the groove does not reach the drawing matrix at the elevations.

In a preferred embodiment of the innovation, a flank is arranged in the area of both areas of the groove near the side edge within the template. This ensures that the drawing pen can be guided even better and more precisely. In this embodiment, elevations are arranged in a manner arranged on both flanks, whereby the elevations are arranged opposite one another in a staggered manner on each flank.

In a further embodiment of the innovation, the elevations can be moved laterally on the upper sides of the flanks following the longitudinal course of the groove. However, an appropriate fastening mechanism must ensure that the elevations cannot move during the intended use of the template.

In order to accommodate any drawing pencils ^, it may be appropriate according to the innovation that a carriage with a receiving recess is arranged within the groove so as to be movable following the longitudinal course of the groove.

The innovation is explained in more detail below using drawings as examples, but is not limited to the embodiments shown.

Figure 1 shows a partially cut-open drawing aid according to the innovation, viewed obliquely from above.

Figure 7 shows an embodiment of the innovation with three grooves arranged parallel to each other in a vertical view.

Figure 3 shows a drawing aid according to the innovation with two circular grooves in a vertical view.

Figure 4 shows a section of Figure 2 along the line Figure 5 shows a section of Figure 3 along dpr line

r λ - a 1.

Figure 6 shows a section of Figure 2 along the line B-B.

Figure 7 shows a section of Figure 2 along the line B 1 - B 1.

Figure 8 shows a section of Figure 2 along the line _., B 2 - B 2. &aacgr;

In Figure 1, the self-supporting molded body 1, the groove 2, the flank 3 in the area near the side edge of the groove 2 and some elevations 4 on the top side of the flank 3 are highlighted by reference numbers. |

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The drawing pen is not shown in Figure 1, but the broken line 5 produced with the new drawing aid is visible.

>n Figure 2, the same reference numbers denote the same elements. In addition, the fastening element 6 of the molded body 1 is shown symbolically on the drawing board.

In Figure 3, the same reference numbers also designate the same elements. In addition, this embodiment requires retaining webs 7 to ensure that the elements 1· and 1'· of the molded body 1 arranged inside the curve do not shift or fall out.

In Figure 4, like reference numerals denote like elements. Additionally, this drawing shows the drawing pin 8 which is drawn along the groove 2 .

In Figure 5, the same reference numbers refer to the same elements. In this illustration, it can be seen that the support webs 7 are made of the same material as the molded body 1 and the elements 1' and 1 ·· arranged inside the curve.

In Figure 6, the same reference numbers again designate the same elements. In addition, the broken line 5 resulting from this arrangement of the device is shown on the lower edge of the figure.

In Figure 7, the same reference numbers again designate the same elements. In addition, the broken line 5 resulting from this arrangement of the device is shown on the lower edge of the figure.

In Fig. 8, the same reference numerals again designate the same elements. In addition, the broken line 5 resulting from this arrangement of the device is shown on the lower edge of the figure.

Claims (1)

ProtectSayings 1.) Drawing aid for drawing broken lines, characterized in that it comprises a self-supporting molded body which contains at least one groove for receiving a drawing pen, and that in at least one area of the groove near the side edge a flank is arranged, through which the width of the groove is reduced in the direction of the drawing matrix, with elevations being arranged at intervals from one another on the upper side of the flank facing away from the drawing matrix. 2.) Drawing aid according to claim 1, characterized in that the molded body consists of plastic. 3.) .Drawing aid according to claim 1 or 2, characterized in that the groove forms a straight or curved line or is a self-contained curve. 4.) Drawing aid according to one of claims 1 to 3, characterized in that the flank has a height which ensures that the drawing pen following the course of the groove reaches the drawing matrix. 5.) Drawing aid according to one of claims 1 to 4, characterized in that the elevations are arranged at regular intervals. 6.) Drawing aid according to one of claims 1 to 5, characterized in that the elevations are designed as rounded areas. 7.) Drawing aid according to one of claims 1 to 6, characterized in that the elevations have a height that ensures that the drawing pen following the course of the groove does not reach the drawing matrix at the elevations. &bull; t * · a &thgr;.) Drawing aid according to one of claims 1 to 7, characterized in that a flank is arranged on each of the two sides of the groove near the side edge. \"£ 9.) Drawing aid according to one of claims 1 to 8, characterized in that the elevations are arranged to be laterally displaceable. It 10.) Drawing aid according to one of claims 1 to 9, characterized in that a holder is arranged within the groove and movable along the length of the groove, which holder has a receiving recess for the drawing pen.