CN205395558U - Multifunctional ruler - Google Patents

Abstract

The utility model discloses a multifunctional ruler, which comprises a first ruler and a second ruler placed superimposedly, and a pin used for rotationally connecting the first ruler and the second ruler and having an angle range scale , the bottom end of the pin is equipped with a suction cup foot, and there is a chute in the middle of the first ruler and the second ruler, and the chute is matched with the pulley on the slider, and the slider is provided with a sliding Block through hole and display, the electronic circuit board is integrated in the slider, the electronic circuit board includes a controller, a power supply, and a precision rotary sensor and a rotary encoder connected to the input end of the controller. The input end of the display is connected with the output end of the controller, and a drawing pen is installed on the through hole of the slider. The utility model has the function of drawing a straight line with a fixed length, a straight line with an arbitrary angle and an arc with a fixed radius and a fixed length on a blackboard or drawing paper, and is stable and flexible in use, high in precision and strong in practicability.

Description

A multifunctional ruler

technical field

The utility model belongs to the technical field of geometric drawing, in particular to a multifunctional ruler.

Background technique

The ruler, compass and protractor used by students for drawing, or the teaching drawing tools used by teachers can only complete the functions of drawing a single line, an arc at a certain angle, and a straight line at any angle. When it is necessary to draw an arc of an angle, first use a protractor to determine the angular position, and then use a compass to complete the drawing, and the length of the arc cannot be known in time; when it is necessary to draw an angle line with an arbitrary angle, it is also necessary to use a protractor to determine the position, and then It is completed with a ruler, which undoubtedly increases the time consumption of drawing and is extremely inconvenient to use; therefore, there is a lack of a multifunctional ruler with simple structure, small size, low cost, reasonable design, and easy use. In addition to the length straight line, the combination of two straightedges and protractors can also quickly complete the drawing of any angle straight line on drawing paper or blackboard, and quickly realize the drawing of a fixed-radius and fixed-length arc through the sensor, with high precision. The operation is simple, reliable and stable, and it solves the disadvantage of inconvenient drawing with existing rulers and gauges.

Utility model content

The technical problem to be solved by the utility model is to provide a multi-functional ruler for the deficiencies in the above-mentioned prior art. And the function of circular arc with fixed radius and fixed length, stable and flexible use, high precision, strong practicability, and easy to popularize and use.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a multi-functional ruler, which is characterized in that it includes a first ruler and a second ruler that are stacked and placed, and is used to rotatably connect the first ruler. A ruler and a second straightedge and a pin with an angle scale, the bottom end of the pin is equipped with a suction cup foot, the middle of the first straightedge and the second straightedge has a chute, and the chute and the slider The pulley on the slider is matched, the slider is provided with a slider through hole and a display, and an electronic circuit board is integrated in the slider, and the electronic circuit board includes a controller, a power supply and an input terminal connected to the controller. The connected precision rotary sensor and rotary encoder, the input end of the display is connected with the output end of the controller, and a drawing pen is installed on the through hole of the slider.

The above-mentioned multifunctional ruler is characterized in that: one end of the first ruler and the second ruler are both provided with a ruler through hole, and the pin passes through the ruler through hole to connect with the suction cup foot.

The above-mentioned multifunctional ruler is characterized in that: the pin, the first ruler and the second ruler are all transparent organic glass.

The above-mentioned multifunctional ruler is characterized in that: magnets are arranged in the suction cup feet.

The above-mentioned multifunctional ruler is characterized in that: the precision rotation sensor is a 357 infinitely rotating precision angle sensor.

The above-mentioned multifunctional ruler is characterized in that: the display is a segment type LCD liquid crystal display.

The above-mentioned multifunctional ruler is characterized in that: the power supply is a rechargeable lithium battery.

Compared with the prior art, the utility model has the following advantages:

1. The utility model installs a rotatable first straightedge and a second straightedge between the pin with the angle range scale and the sucker foot, and any angle can be determined through the 360 ^D angle range on the pin. Using the first straightedge The ruler and the second ruler draw straight lines at angles, and magnets are arranged on the feet of the suction cups, which can demonstrate and draw straight lines at any angles on a blackboard with magnetism. The operation is simple and convenient for popularization and use.

2. In this utility model, by setting a precision rotation sensor and a rotary encoder on the slider, the arc radius can be selected by sliding the pulley, and the first ruler and the second ruler can be rotated, and the angle data can be determined through the precision rotation sensor. The length of the arc can be determined by the rotary encoder, which solves the shortcoming of complicated calculation of the arc, is reliable and stable, and has a good use effect.

3. The utility model can visually display various parameters of a circular arc with a fixed radius and a fixed length through a pen-segment LCD liquid crystal display, which is small in size and low in cost.

4. The utility model has novel and reasonable design, low input cost, convenient disassembly and installation, strong practicability, and is convenient for popularization and use.

In summary, the utility model is novel and reasonable in design, simple in structure, and has the function of drawing fixed-length straight lines, arbitrary-angle straight lines, and fixed-radius and fixed-length arcs on a blackboard or drawing paper. It is stable and flexible in use, high in precision, and practical. Strong, easy to popularize and use.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is an exploded view of the structure of Embodiment 1 of the utility model.

Fig. 2 is an exploded view of the structure of Embodiment 2 of the utility model.

Fig. 3 is a structural schematic diagram of the utility model with the bottom of the pin facing down.

Fig. 4 is a structural schematic diagram of the utility model with the bottom of the pin facing up.

Fig. 5 is a schematic circuit block diagram of the electronic circuit board of the present invention.

Explanation of reference signs:

1—pin; 2-1—the first ruler; 2-2—the second ruler;

3—suction cup foot; 4—drawing pen; 5—slider;

6—precision rotary sensor; 7—rotary encoder; 8—controller;

9—display; 10—power supply; 11—through hole of ruler;

12—chute; 13—pulley; 14—slider through hole.

detailed description

Example 1

As shown in Fig. 1 and Fig. 5, the utility model comprises the first ruler 2-1 and the second ruler 2-2 that are superimposed, and is used to rotate and connect the first ruler 2-1 and the second ruler. Ruler 2-2 and a pin 1 with an angle range scale, the bottom end of the pin 1 is equipped with a suction cup foot 3, and a chute 12 is opened in the middle of the first ruler 2-1 and the second ruler 2-2 , the chute 12 matches the pulley 13 on the slider 5, the slider 5 is provided with a slider through hole 14 and a display 9, an electronic circuit board is integrated in the slider 5, and the electronic circuit The board includes a controller 8, a power supply 10, a precision rotary sensor 6 and a rotary encoder 7 connected to the input of the controller 8, and the input of the display 9 is connected to the output of the controller 8, so A drawing pen 4 is installed on the through hole 14 of the slider.

In this embodiment, one end of the first ruler 2 - 1 and the second ruler 2 - 2 is provided with a ruler through hole 11 , and the pin 1 is connected to the sucker foot 3 through the ruler through hole 11 .

It should be noted that the structure of the first ruler 2-1 and the second ruler 2-2 is exactly the same, and the upper and lower edges of the first ruler 2-1 and the second ruler 2-2 are provided with chute 12 scales are marked on the edges for easy drawing of lines.

In this embodiment, magnets are arranged inside the suction cup foot 3, and the drawing pen 4 is a drawing pencil.

It should be noted that one end of the suction cup foot 3 is set as a plane, and the other end is set as a pointed tip. Usually, when drawing on drawing paper, when drawing an arc with the ruler and gauge, the suction cup foot 3 of the fixing pin 1 will move on the paper, giving Drawing brings unnecessary trouble; while the drawing tool used for teaching demonstration needs to be fixed on a magnetic blackboard, the magnetic blackboard can be absorbed by the magnet in the suction cup foot 3, so as to avoid the ruler falling and damaging the ruler caused by wrong operation .

In this embodiment, the pin 1, the first ruler 2-1 and the second ruler 2-2 are all transparent organic glass, which is convenient for observing data.

It should be noted that, as shown in FIG. 3 and FIG. 4 , the top of the pin 1 has an angle range scale, and the bottom of the pin 1 has a groove for accommodating the suction cup foot 3 .

In this embodiment, the precision rotation sensor 6 is a 357 infinite rotation precision angle sensor.

In this embodiment, the display 9 is a segment type LCD liquid crystal display.

In this embodiment, the power supply 10 is a rechargeable lithium battery.

When drawing on drawing paper, the utility model uses the pin 1 to pass through the ruler through hole 11 of the first ruler 2-1 and the ruler through hole 11 of the second ruler 2-2, and the sucker pin 3 The flat end of the pin is installed on the bottom of the pin 1, and the pointed end of the suction cup foot 3 is fixed on the paper to prevent the paper from moving; when a straight line needs to be drawn, the first ruler 2-1 and the second ruler 2-2 are overlapped, Draw a straight line of fixed length through the scale on the first ruler 2-1;

When it is necessary to draw a straight line at any angle, by stirring the first ruler 2-1 and the second ruler 2-2, observe the angle range scale value on the pin 1 to determine the selected angle, because the first ruler 2-1, The second straightedge 2-2 and the pin 1 can be rotated arbitrarily, so the drawn angle line can be arbitrarily selected, and the angle value can be determined by the difference between two points on the pin 1 with a ^360D angle range, which is flexible in use and convenient in measurement ;

When it is necessary to draw a fixed radius and a fixed-length arc, the first ruler 2-1 and the second ruler 2-2 are overlapped, so the chute 12 on the first ruler 2-1 and the second ruler The chute 12 on the 2-2 coincides, and the pulley 13 on the slide block 5 is installed in the chute 12 on the coincident first ruler 2-1 and the chute 12 on the second ruler 2-2, The slide block through hole 14 on the slide block 5 is positioned on the chute 12 on the coincident first ruler 2-1 and the chute 12 on the second ruler 2-2, drawing pen 4 is installed on the slide block through hole. On the hole 14, the drawing pen 4 passes through the slide block through hole 14 and the chute 12 on the first ruler 2-1 and the chute 12 on the second ruler 2-2 to contact with the drawing paper, and rotate the superimposed The first ruler 2-1 and the second ruler 2-2, the power supply 10 on the electronic circuit board in the slider 5 supplies power for each power module on the electronic circuit board, and the precision rotation sensor 6 records the rotation of the slider 5 The angle data of the rotary encoder 7 records the length data of the slider 5 rotation, and the data are all displayed by the display 9, which can determine the angle and length of the drawn arc in real time, avoid complicated calculations, and have a good use effect.

Example 2

As shown in Figure 2, when it is necessary to carry out teaching demonstration drawing on a blackboard with magnetism, the utility model uses the pin 1 to pass through the ruler through hole 11 of the first ruler 2-1 and the second ruler 2-1 successively. 2, the pointed end of the suction cup foot 3 is installed on the bottom of the pin 1, and the flat end of the suction cup foot 3 is fixed on the magnetic blackboard through its built-in magnet to avoid accidents caused by misoperation. The ruler gauge falls and damages the ruler gauge, and the described drawing pen 4 is a drawing chalk; the structure and installation relationship and the working process of the remaining parts are all the same as in embodiment 1.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (7)

1. a kind of multifunctional ruler gauge, is characterized in that: comprise the first ruler (2-1) and the second ruler (2-2) of stacking and place, and be used to rotate and connect described first ruler (2-2) -1) and the second ruler (2-2) and the pin (1) with angle range scale, the bottom end of the pin (1) is equipped with a suction cup foot (3), the first ruler (2-1 ) and the middle of the second ruler (2-2) are provided with a chute (12), and the chute (12) is matched with the pulley (13) on the slide block (5), and the slide block (5) ) is provided with a slider through hole (14) and a display (9), and an electronic circuit board is integrated in the slider (5), and the electronic circuit board includes a controller (8), a power supply (10) and a A precision rotary sensor (6) and a rotary encoder (7) connected to the input end of the controller (8), the input end of the display (9) is connected to the output end of the controller (8), and the A drawing pen (4) is installed on the slide block through hole (14). 2. according to a kind of multi-function ruler gauge described in claim 1, it is characterized in that: one end of described first ruler (2-1) and second ruler (2-2) all has ruler through hole (11), the pin (1) passes through the ruler through hole (11) and is connected with the suction cup foot (3). 3. according to a kind of multi-function ruler gauge described in claim 1, it is characterized in that: described pin (1), the first ruler (2-1) and the second ruler (2-2) are all transparent organic Glass. 4. A multifunctional ruler and gauge according to claim 1, characterized in that: magnets are arranged inside the suction cup feet (3). 5. A multifunctional ruler and gauge according to claim 1, characterized in that: the precision rotation sensor (6) is a 357 stepless rotation precision angle sensor. 6. A multifunctional ruler according to claim 1, characterized in that: said display (9) is a segment type LCD liquid crystal display. 7. A multifunctional ruler according to claim 1, characterized in that: said power supply (10) is a rechargeable lithium battery.