CN202965700U - Multifunctional dividing ruler - Google Patents

Abstract

The utility model discloses a multifunctional scale, which comprises a circular shaft, a slider and a scale. One end of the long axis of the scale is semicircular, and a circular groove is opened at the semicircular end of the scale. The rotating shaft is located in the circular groove and can rotate freely in the circular groove without falling off. The scale has a closed groove along the centerline of the long axis. The slider is located in the groove and can slide in the groove without falling off. Through the combination and cooperation of the three modules of scale, circular shaft and slider, four common drawing methods can be completed: drawing straight lines of infinite length, drawing intersecting lines at any angle, drawing parallel lines at any distance, drawing circles, and drawing arcs.

Description

multi-function scale

technical field

The utility model belongs to stationery, in particular to a multifunctional scale.

Background technique

The existing linear scale has a single function. Without the assistance of other drawing tools, the following common drawing processes cannot be independently completed: drawing straight lines of infinite length, drawing intersecting lines at any angle, drawing parallel lines at any distance, drawing circles, and drawing arcs.

Contents of the invention

The purpose of the utility model is to provide a multifunctional scale.

A multifunctional scale, including a circular shaft, a slider and a scale, one end of the long axis of the scale is a semicircle, and a circular groove is opened at one end of the semicircle of the scale, and the circular shaft is located in the circular groove Among them, it can rotate freely in the circular groove without falling off. The scale has a closed groove along the centerline of the long axis. The slider is located in the above groove and can slide in the groove without falling off.

The semicircular end of the scale provides the angular graduation marks; the groove along one side of the major axis provides the length graduation marks.

The circular groove and the circular rotating shaft are concentric circles; the extension line of one side of the groove passes through the center of the circular rotating shaft.

The middle of the circular shaft is in the shape of a convex lens. There are reference lines on the upper and lower surfaces of the circular shaft. The reference lines are crosses, three short and one long. The reference lines on the upper and lower surfaces coincide vertically. Coincides with the center of the circular shaft.

The center of the upper surface and the lower surface of the slider is provided with a positioning line, which is perpendicular to the long axis of the groove, and the positioning lines on the upper surface and the lower surface are vertically coincident; there is a hole at one end of the positioning line, and the hole is located in the groove. One side of the length tick marks.

The "0" scale lines of all the length scale lines are on the same straight line, and this straight line is perpendicular to the long axis direction of the scale and passes through the center of the circular rotating shaft. The theoretical circle center of the angle scale line coincides with the circle center of the circular rotating shaft.

The material selection of the slider and the multi-function scale must ensure a large friction coefficient between the two contact surfaces.

Compared with the prior art, the utility model has significant advantages: ① the function of the drawing tool is integrated, and a ruler can basically replace the original scale, protractor, triangle, compass and other commonly used drawing tools; ② modularization is adopted Design, each multi-functional ruler contains three independent modules, which are scale, circular shaft and slider; ③Through the combination and cooperation of the three modules of scale, circular shaft and slider, four common operations can be completed. Drawing method: draw straight lines of infinite length, draw intersecting lines at any angle, draw parallel lines at any distance, and draw circles (arcs).

Description of drawings

Figure 1 is a schematic plan view of the utility model scale 3.

Figure 2 is a schematic diagram of the assembly position of the utility model. the

Figure 3 is a cross-sectional view of A-A of the utility model, wherein Figure 3 (a) is a cross-sectional structure of a circular shaft; Figure 3 (b) is a cross-sectional structure of a circular groove; Figure 3 (c) is a circular shaft installed in a circular The cross-sectional structure when in the groove.

Figure 4 is a cross-sectional view of B-B of the utility model, in which Figure 4 (a) is the cross-sectional structure of the slider; Figure 4 (b) is the cross-sectional structure of the groove; Figure 4 (c) is when the slider is installed in the groove cross-sectional structure.

Figure 5 is a multi-view of the circular shaft of the utility model; among them, Figure 5 (a) is the top view of the circular shaft; Figure 5 (b) is the front view of the circular shaft; Figure 5 (c) is the rear view of the circular shaft View; Figure five (d) is the left view of the circular shaft.

Figure 6 is a multi-view of the slider of the utility model; Figure 6 (a) is a top view of the slider; Figure 6 (b) is a front view of the slider; Figure 6 (c) is a right view of the slider; Figure 6 (d) is the rear view of slider 2.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Combining Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a multifunctional scale includes a circular shaft 1, a slider 2 and a scale 3, and one end of the long axis of the scale 3 is a semicircle There is a circular groove 5 at one end of the semicircle of the scale 3. The circular rotating shaft 1 is located in the circular groove 5 and can rotate freely in the circular groove 5 without falling off. The scale 3 is opened along the centerline of the long axis. There is a closed groove 4, the slider 2 is located in the groove 4, and can slide in the groove 4 without falling off.

The semicircular end of the scale 3 is provided with an angle scale line; the groove 4 is provided with a length scale line along one side of the major axis.

The circular groove 5 and the circular shaft 1 are concentric circles; the extension line of one side of the groove 4 passes through the center of the circular shaft 1 .

The middle of the circular rotating shaft 1 is in the shape of a convex lens. The upper surface and the lower surface of the circular rotating shaft 1 have a reference line 8. The reference line 8 is a cross, three short and one long. The reference lines 8 on the upper surface and the lower surface coincide vertically. The crosshairs of the line 8 coincide with the center of the circular rotating shaft 1 .

The center of the upper surface and the lower surface of the slider 2 is provided with a positioning line 6, the positioning line 6 is perpendicular to the long axis of the groove 4, and the positioning line 6 on the upper surface and the lower surface vertically coincides; one end of the positioning line 6 has a hole 7. The hole 7 is located on the side of the groove 4 where the length scale line is set.

The "0" scale lines of all the length scale lines are on the same straight line, which is perpendicular to the long axis direction of the scale 3 and passes through the center of the circular rotating shaft 1 . The theoretical circle center of the angle scale line coincides with the circle center of the circular rotating shaft 1 .

The material selection of the slider 2 and the scale 3 must ensure that there is a large friction coefficient between the contact surfaces of the two.

The multifunctional ruler adopts a modular design, and each multifunctional ruler includes three independent modules, namely the scale 3 , the circular shaft 1 and the slider 2 .

The function of the circular reel 1:

The circular rotating shaft 1 can rotate freely in the circular groove 5 without falling off, so the scale 3 can be rotated while pressing the circular rotating shaft 1 to keep still. When the line of sight is perpendicular to the scale surface, that is, the reading is read when the cross reference lines 8 on the upper and lower surfaces of the circular rotating shaft 1 coincide. The difference between the two readings (angles) when the circular rotating shaft 1 remains stationary can be regarded as the angle that the scale 3 rotates. In addition, as can be seen from the cross-sectional view of the circular shaft 1 shown in Figure 2 of the accompanying drawings, the middle of the circular shaft 1 is in the shape of a convex lens, which can also be used as a magnifying glass, which is convenient for aiming at objects and reading text.

Features of Slider 2:

The slider 2 can slide freely in the groove 4 without falling off, so you can drag the scale 3 while pressing the slider 2 to keep still, or drag the slider 2 while pressing the scale 3 to keep still. When the line of sight is perpendicular to the scale surface, that is, when the positioning line 6 on the upper and lower surfaces of the slider 2 coincides, the reading is taken. When any module of slider 2 and scale 3 remains stationary, the difference between the two readings (length) can be regarded as the relative movement distance of the other module.

Features of Scale 3:

The relative movement (rotation) of the scale 3 and the circular shaft 1 is completed, and the angle value of the relative rotation is measured through multiple readings of the cross reference line 8 in the area of the angle scale line. Or complete the relative movement (movement) of the scale 3 and the slider 2, and measure the length value of the relative movement by taking multiple readings of the positioning line 6 in the area of the length scale line.

How to use:

Draw a straight line of infinite length:

1) Draw a straight line along the straight line outside the scale 3;

2) Press and hold the scale 3 to keep still, and move the slider 2 to a position with a larger value on the length scale;

3) Press and hold the slider 2 to keep still, and move the scale 3 backward along the long axis;

4) Then draw the straight line and continue to draw backward.

Draw intersecting lines at any angle:

1) Draw a straight line along the straight line outside the scale 3;

2) Position the center of the reference line 8 on the circular shaft 1 at the intersection of the intersecting lines to be obtained, and adjust until the longest line of the reference line 8 is aligned with the "0" scale line of the angle scale line, and the middle groove of the scale 3 Groove 4 sets the straight edge of the length scale line to coincide with the drawn straight line;

3) Press and hold the circular shaft 1 to keep still, turn the scale 3, and change the angle value read by the reference line 8 to ensure that the rotation angle of the scale 3 is any included angle of the intersecting line;

4) Press and hold the slider 2 to keep still, move the scale 3 along the long axis direction appropriately, and draw the desired intersection line along the straight edge of the length scale line set in the middle groove 4 of the scale 3 .

Draw arbitrarily spaced parallel lines:

1) Draw a straight line along the straight edge of the scale line in the middle groove 4 of the scale 3;

2) Press and hold the circular rotating shaft 1 to keep still, turn the scale 3, and change the angle value read by the reference line 8 to ensure that the rotation angle of the scale 3 is 90°;

3) Press and hold the slider 2 to keep still, and move the scale 3 along the long axis, and the moving distance is the distance between the parallel lines;

4) Hold down the circular rotating shaft 1 to keep still, turn the scale 3, and change the angle value read by the reference line 8 to ensure that the rotation angle of the scale 3 is 90°, and set the length scale line along the middle groove 4 of the scale 3 Draw the desired parallel line on the straight side of .

Draw a circle (arc):

1) Position the center of the reference line 8 on the circular rotating shaft 1 at the center of the desired circle (arc);

2) Press and hold the scale 3 to keep still, move the slider 2 to a certain position, and ensure that the linear scale value read through the positioning line 6 on the slider 2 should be the radius of the circle (arc) sought;

3) Put the nib into the hole 7 at one end of the positioning line 6 on the slider 2;

4) Press and hold the circular shaft 1 to keep still, and turn the stroke to draw a circle or an arc (at this time, the large friction coefficient between the slider 2 and the scale 3 ensures that the two are relatively stationary).

Claims (7)

1. A multifunctional scale, including a circular shaft (1), a slider (2) and a scale (3), characterized in that: one end of the long axis of the scale (3) is a semicircle, and the scale is (3) There is a circular groove (5) at one end of the semicircle. The circular shaft (1) is located in the circular groove (5), and can rotate freely in the circular groove (5) without falling off. The scale ( 3) A closed groove (4) is formed along the center line of the long axis, and the slider (2) is located in the groove (4), and can slide in the groove (4) without falling off. 2. A multifunctional scale according to claim 1, characterized in that: the semicircular end of the scale (3) is provided with an angle scale line; the groove (4) is provided with a length scale line along one side of the long axis. 3. A multifunctional scale according to claim 1, characterized in that: the circular groove (5) and the circular shaft (1) are concentric circles; the extension line of one side of the groove (4) passes through the circular The center of the shaft (1). 4. A multifunctional scale according to claim 1, characterized in that: the middle of the circular shaft (1) is in the shape of a convex lens, and the upper and lower surfaces of the circular shaft (1) have reference lines (8) , the reference line (8) is a cross, three short and one long, the reference lines (8) on the upper surface and the lower surface are vertically coincident, and the crosshair center of the reference line (8) coincides with the center of the circular rotating shaft (1). 5. A multifunctional scale according to claim 1 or 2, characterized in that: a positioning line (6) is arranged in the center of the upper surface and the lower surface of the slider (2), and the positioning line (6) is perpendicular to The long axis of the groove (4), the positioning line (6) on the upper surface and the lower surface are vertically coincident; one end of the positioning line (6) has a hole (7), and the hole (7) is located at the set length of the groove (4). One side of the tick mark. 6. A multifunctional scale according to claim 1 or 2, characterized in that: the "0" scale lines of all the length scale lines are on the same straight line, and this straight line is perpendicular to the length of the scale (3). axis direction, and pass through the center of the circular shaft (1); the theoretical center of the angle scale coincides with the center of the circular shaft (1). 7. A multi-functional scale according to claim 1 or 2, characterized in that: the material selection of the slider (2) and the scale (3) must ensure greater friction between the two contact surfaces coefficient.

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