CN111660705A - Multifunctional compasses - Google Patents

Abstract

The invention discloses a multifunctional compass, which relates to the field of teaching tools and drawing, and mainly solves the technical problem of low drawing efficiency of the existing compasses. The invention comprises a first leg, a second leg, one end of the first leg, a third One end of the two legs rotates around the same rotation center, and also includes a laser distance sensor and a control box. The laser distance sensor is located on the second leg, and the light emitted by the laser distance sensor shines on the first leg. The control box is provided with a control board, a display The control board is electrically connected to the laser distance sensor and the display screen; the first support leg is provided with a first scale line, and the second support foot is provided with a second scale line. According to the distance between the laser distance sensor and the rotation center, the detection distance of the laser distance sensor, and the angle between the laser distance sensor and the second leg, the invention calculates the drawing radius of the compass and the angle between the two legs, and measures the length according to the scale line. .

Description

A multifunctional compass

technical field

The invention relates to the field of teaching tools and drawing, and more particularly, to a multifunctional compass.

Background technique

At present, there are many kinds of compasses on the market. When drawing, the compass needs to be matched with the ruler to measure the distance. When it is necessary to measure the angle or measure the length, other tools must be used, which brings a lot of trouble to the drawing and reduces the efficiency.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is aimed at the above-mentioned deficiencies of the prior art, and the purpose of the present invention is to provide a multifunctional compass that can improve the drawing efficiency.

The technical scheme of the present invention is as follows: a multifunctional compass includes a first leg and a second leg, one end of the first leg and one end of the second leg rotate around the same rotation center, and also includes a laser distance sensor and a control box, The laser distance sensor is located on the second leg, the light emitted by the laser distance sensor is irradiated on the first leg, the control box is provided with a control board and a display screen, and the control board is electrically connected The laser distance sensor and the display screen; the first leg is provided with a first scale line, and the second leg is provided with a second scale line, when the angle between the first leg and the second leg is When the angle is 180°, the first scale line and the second scale line constitute the same measuring ruler.

As a further improvement, the light emitted by the laser distance sensor is perpendicular to the second leg.

Further, it also includes a rotating shaft, one end of the first support foot and one end of the second support foot are respectively rotatably mounted on the rotating shaft, and both ends of the rotating shaft are provided with clamps for clamping the first support foot and the second support foot. The connecting plate, the axis line of the rotating shaft is the rotation center.

Further, an adjustment screw for adjusting the rotational damping of the first support leg and the second support leg is provided between the two connecting plates.

Further, the control box is connected to one end of the two connecting plates away from the rotating shaft.

Further, an operating handle is provided on the control box.

Further, the control box is provided with a switch button and a function conversion button that are electrically connected to the control board.

Further, the first leg is provided with a line drawing mechanism, and the second leg is provided with a positioning mechanism.

Further, the line-drawing mechanism includes a first rotating stopper and a building block pencil refill that are connected to each other, and an end of the first leg away from the rotation center is provided with a second stopper for installing the first rotating stopper. an installation hole, the upper end of the first rotating locking member is provided with a first telescopic button extending to the outer side of the first leg, and the outer side of the first leg is provided with a first sliding button corresponding to the first telescopic button a slot; the positioning mechanism includes a second rotating locking member and a steel needle that are connected to each other, and the end of the second leg away from the rotation center is provided with a second mounting hole for installing the second rotating locking member, The upper end of the second rotating locking member is provided with a second telescopic button extending to the outer side of the second leg, and the outer side of the second leg is provided with a second sliding groove corresponding to the second telescopic button.

beneficial effect

Compared with the prior art, the present invention has the following advantages: the present invention calculates the drawing radius of the compass according to the distance between the laser distance sensor and the rotation center, the detection distance of the laser distance sensor, and the angle between the laser distance sensor and the second leg. , The angle between the first leg and the second leg, according to the first scale line, the second scale line or the combination of the first scale line and the second scale line to measure the length, can achieve accurate circle drawing, protractor function and ruler Function, effectively improve the quality of the drawing, reduce the operation intensity, reduce the operation time, improve the drawing efficiency, reduce the errors that may occur during the drawing, and at the same time reduce the cost and facilitate the office.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the front view structure schematic diagram of the present invention;

FIG. 3 is a left-view structural schematic diagram of the present invention;

Fig. 4 is the structural schematic diagram when the included angle of the first leg and the second leg is 180° in the present invention;

Fig. 5 is the structural representation of the line drawing mechanism in the present invention;

6 is a schematic structural diagram of a positioning mechanism in the present invention;

FIG. 7 is a schematic diagram of the actual measurement of the present invention.

Among them: 1-first leg, 2-second leg, 3-rotation center, 4-laser distance sensor, 5-control box, 6-display, 7-first scale line, 8-second scale line, 9-rotating shaft, 10-connecting plate, 11-adjusting screw, 12-operating handle, 13-switch button, 14-function conversion button, 15-line drawing mechanism, 16-positioning mechanism, 17-first rotating clamp, 18-Building block pencil refill, 19-First retractable button, 20-First chute, 21-Second rotary latch, 22-Steel needle, 23-Second retractable button.

Detailed ways

The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

1-7, a multifunctional compass includes a first leg 1, a second leg 2, one end of the first leg 1 and one end of the second leg 2 rotate around the same rotation center 3, and also includes a laser distance sensor 4, The control box 5, the laser distance sensor 4 is located on the second leg 2, the light emitted by the laser distance sensor 4 is irradiated on the first leg 1, the control box 5 is provided with a control board and a display screen 6, and the control board is electrically connected to the laser distance The sensor 4, the display screen 6, and the control box 5 are provided with a button battery for power supply. The first leg 1 is provided with a first scale line 7, and the second leg 2 is provided with a second scale line 8. When the angle between the first leg 1 and the second leg 2 is 180°, the first scale line 7. The second scale line 8 constitutes the same measuring ruler, as shown in Figure 4.

In this embodiment, the light emitted by the laser distance sensor 4 is perpendicular to the second leg 2 . In other embodiments, the angle between the light emitted by the laser distance sensor 4 and the second leg 2 may be other fixed angles.

The present invention also includes a rotating shaft 9, one end of the first supporting leg 1 and one end of the second supporting leg 2 are respectively rotatably mounted on the rotating shaft 9, and the two ends of the rotating shaft 9 are provided with connecting plates for clamping the first supporting leg 1 and the second supporting leg 2 10. The axis line of the rotating shaft 9 is the rotation center 3 . An adjusting screw 11 for adjusting the rotational damping of the first leg 1 and the second leg 2 is provided between the two connecting plates 10 . Tightening the adjusting screw 11 to a proper position can not only ensure the smooth opening of the first supporting leg 1 and the second supporting leg 2, but also ensure the stability of the drawing of the first supporting leg 1 and the second supporting leg 2.

The control box 5 is connected to one end of the two connecting plates 10 away from the rotating shaft 9 . The control box 5 is provided with an operating handle 12 , and the operating handle 12 and the two connecting plates 10 are on the same line. The control box 5 is provided with a switch button 13 and a function switch button 14 that are electrically connected to the control board. The switch button 13 and the function switch button 14 are respectively located on both sides of the operating handle 12 .

In this embodiment, the first leg 1 is provided with a line drawing mechanism 15 , and the second leg 2 is provided with a positioning mechanism 16 . The line-drawing mechanism 15 includes a first rotating latch 17 and a building block pencil refill 18 that are connected to each other. One end of the first leg 1 away from the rotation center 3 is provided with a first mounting hole for installing the first rotating latch 17. A first retractable button 19 extending to the outer side of the first support leg 1 is provided on the upper end of a rotary latching member 17 , and a first sliding groove 20 corresponding to the first retractable button 19 is provided at the outer side of the first leg 1 . By sliding the first retractable button 19, sliding out the refill once, and sliding the refill again, the pencil refill can be retracted or sent out flexibly to avoid damage to the human body caused by the pencil head. The positioning mechanism 16 includes a second rotating locking member 21 and a steel needle 22 that are connected to each other. The end of the second leg 2 away from the rotation center 3 is provided with a second mounting hole for installing the second rotating locking member 21. The upper end of the positioning member 21 is provided with a second telescopic button 23 extending to the outer side of the second leg 2 , and the outer side of the second leg 2 is provided with a second sliding groove corresponding to the second telescopic button 23 . By sliding the second telescopic button 23, the steel needle 22 can be flexibly retracted or sent out, so as to avoid the steel needle 22 from causing harm to the human body.

Of course, in other embodiments, the line drawing mechanism 15 may be provided on the second leg 2 , and the positioning mechanism 16 may be provided on the first leg 1 .

In this embodiment, the first rotating locking member 17 , the building block pencil refill 18 , and the second rotating locking member 21 are all functional modules in the prior art. The first rotating locking member 17 and the second rotating locking member 21 The structure is similar to the rotating card position structure in the existing automatic ballpoint pen.

working principle:

)；L、A可以根据余弦定理计算积木铅笔笔芯18与钢针22的距离c，c即为圆规的作图半径，作图半径c的测量范围(0，

)，合理设计a和L的值可扩大测量范围。以上计算均为控制板自动完成，夹角A或距离c由显示屏6显示输出。As shown in FIG. 7 , the distance a between the laser distance sensor 4 and the rotation center 3 , the detection distance b of the laser distance sensor 4 , the angle B between the laser distance sensor 4 and the second leg 2 , the first leg 1 and the second leg are known. The length L of the leg 2; when B is a right angle, a, b can calculate the angle A between the first leg 1 and the second leg 2 according to the trigonometric function; when B is other angles, a, b, B can be calculated according to the law of cosines Calculate the angle A between the first leg 1 and the second leg 2, the measurement range of the angle A is (0,

); L, A can calculate the distance c between the pencil refill 18 of the building block and the steel needle 22 according to the law of cosines, c is the drawing radius of the compass, and the measuring range of the drawing radius c (0,

), reasonable design of the values of a and L can expand the measurement range. The above calculations are automatically completed by the control board, and the included angle A or distance c is displayed and output by the display screen 6 .

When the angle measurement is required, the rotation center 3 is aligned with the vertex of the angle to be measured, the first leg 1 and the second leg 2 are aligned with both sides of the angle to be measured, and the degree of the angle to be measured can be obtained according to the above calculation.

The function of the function switching button 14 corresponds to switching the measurement angle A or the distance c.

According to the distance between the laser distance sensor and the rotation center, the detection distance of the laser distance sensor, and the angle between the laser distance sensor and the second leg, the invention calculates the drawing radius of the compass and the angle between the first leg and the second leg. A scale line, a second scale line or a combination of the first scale line and the second scale line for length measurement, which can realize precise circle drawing, protractor function and ruler function, effectively improve the quality of drawing, reduce operation intensity, and reduce operation Time, improve the efficiency of drawing, reduce errors that may occur during drawing, reduce costs and facilitate office work.

The above are only the preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the effect and effect of the present invention. Utility of Patents.

Claims (9)

1. A multifunctional compass, comprising a first leg (1) and a second leg (2), one end of the first leg (1) and one end of the second leg (2) rotating around the same rotation center (3) , characterized in that it further comprises a laser distance sensor (4) and a control box (5), the laser distance sensor (4) is located on the second leg (2), and the light emitted by the laser distance sensor (4) Irradiated on the first support leg (1), the control box (5) is provided with a control board and a display screen (6), and the control board is electrically connected to the laser distance sensor (4), the display screen ( 6); a first scale line (7) is provided on the first support leg (1), and a second scale line (8) is provided on the second support foot (2). ) and the included angle of the second leg (2) is 180°, the first scale line (7) and the second scale line (8) constitute the same measuring ruler. 2 . The multifunctional compass according to claim 1 , wherein the light emitted by the laser distance sensor ( 4 ) is perpendicular to the second leg ( 2 ). 3 . 3. A multifunctional compass according to claim 1, characterized in that it further comprises a rotating shaft (9), one end of the first support leg (1) and one end of the second support leg (2) are respectively rotatably mounted on the On the rotating shaft (9), the two ends of the rotating shaft (9) are provided with connecting plates (10) for clamping the first supporting leg (1) and the second supporting leg (2), and the The axis line is the rotation center (3). 4. The multifunctional compass according to claim 3, characterized in that, between the two connecting plates (10), a rotational damping for adjusting the first leg (1) and the second leg (2) is provided the adjusting screw (11). 5 . The multifunctional compass according to claim 3 , wherein the control box ( 5 ) is connected to one end of the two connecting plates ( 10 ) away from the rotating shaft ( 9 ). 6 . 6 . The multifunctional compass according to claim 1 , wherein an operating handle ( 12 ) is provided on the control box ( 5 ). 7 . 7 . The multifunctional compass according to claim 1 , wherein the control box ( 5 ) is provided with a switch button ( 13 ) and a function conversion button ( 14 ) electrically connected to the control board. 8 . 8. The multifunctional compass according to any one of claims 1-7, characterized in that, the first leg (1) is provided with a line drawing mechanism (15), and the second leg (2) is provided with a line drawing mechanism (15). There is a positioning mechanism (16). 9 . The multifunctional compass according to claim 8 , wherein the line drawing mechanism ( 15 ) comprises a first rotating clamping member ( 17 ) and a building block pencil refill ( 18 ) that are connected to each other, so that the One end of the first support leg (1) away from the rotation center (3) is provided with a first mounting hole for installing the first rotation locking member (17). The upper end is provided with a first telescopic button (19) extending to the outside of the first support leg (1), and the outside of the first support foot (1) is provided with a first chute corresponding to the first telescopic button (19). (20); the positioning mechanism (16) includes a second rotating latching member (21) and a steel needle (22) that are connected to each other, and one end of the second leg (2) away from the rotation center (3) is provided with There is a second installation hole for installing the second rotating locking member (21), and the upper end of the second rotating locking member (21) is provided with a second telescopic extension extending to the outside of the second support leg (2). The button (23) is provided with a second chute corresponding to the second telescopic button (23) on the outer side of the second leg (2).

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