CN220390828U

CN220390828U - Drawing device

Info

Publication number: CN220390828U
Application number: CN202321490405.9U
Authority: CN
Inventors: 田晓静; 王斐
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-01-26
Anticipated expiration: 2033-06-12

Abstract

The utility model relates to the technical field of teaching aids, in particular to a diagraph. The utility model provides a mathematical teaching drawing device which can be adsorbed on a blackboard, can adjust the size of a drawn circle and is provided with a horizontal positioning device. The utility model provides a diagraph, which comprises a protractor and the like; the angle gauge is characterized in that a ruler is fixedly connected below the angle gauge, and two magnets are fixedly connected to one side of the angle gauge. According to the utility model, the magnet is arranged on the protractor, so that the protractor can be adsorbed on the blackboard through the magnet, and a teacher does not need to hold the protractor.

Description

Drawing device

Technical Field

The utility model relates to the technical field of teaching aids, in particular to a diagraph.

Background

In the mathematical education process, a teacher is required to make a drawing on a blackboard in many cases. Drawing by hands of a teacher can easily result in drawing of a drawing that is not very standard. Even with a plotter, a teacher is required to hold the plotter with his or her hands, and the hands of the teacher may shake, resulting in nonstandard drawing and inconvenient plotter. Most of the plotters draw circles with fixed sizes, cannot adjust the sizes, are single in usage, and have no horizontal positioning device, so that the drawn straight lines can be inclined.

Therefore, there is a need to develop a mathematical teaching drawing device which can be absorbed on a blackboard, can adjust the size of a drawn circle, and is provided with a horizontal positioning device.

Disclosure of Invention

In order to overcome the defects that the conventional diagraph is nonstandard in freehand diagraph in the mathematical education process, a teacher is required to hold the diagraph by hand, the circle drawing size cannot be adjusted, the usage is single and a horizontal positioning device is not available, the utility model provides the mathematical education diagraph which can be adsorbed on a blackboard, the circle drawing size can be adjusted, and the horizontal positioning device is arranged.

The technical proposal is as follows: the diagraph comprises a protractor, a ruler and magnets, wherein the ruler is fixedly connected to the lower portion of the protractor, and two magnets are fixedly connected to one side of the protractor.

More preferably, the angle gauge further comprises a fixed protruding rod and a reset spring, wherein a clamping groove is formed in the center of the lower portion of the angle gauge, the fixed protruding rod is connected in the clamping groove of the angle gauge in a sliding mode, a protrusion is arranged on the fixed protruding rod, the reset spring is fixedly connected to the fixed protruding rod, one end of the reset spring is fixedly connected with the angle gauge, and the reset spring is located between the fixed protruding rod and the angle gauge.

More preferably, the device further comprises a sliding rod, a fixed block and an extrusion spring, wherein the fixed protruding rod is connected with the sliding rod in a sliding mode, a plurality of round holes are formed in the sliding rod, one end of the sliding rod is connected with the fixed block in a sliding mode, the extrusion spring is fixedly connected in the sliding rod, and one end of the extrusion spring is fixedly connected with the fixed block.

More preferably, the device also comprises a limit rod and a compression spring, the upper part of the fixed convex rod is connected with the limit rod in a sliding way, and a compression spring is arranged between the limiting rod and the fixed protruding rod, and the lower end of the limiting rod is clamped into a round hole on the sliding rod.

More preferably, the device further comprises a level gauge, and the level gauge is arranged on the angle gauge.

The beneficial effects are as follows: according to the utility model, the magnet is arranged on the protractor, so that the protractor can be adsorbed on the blackboard through the magnet, a teacher does not need to hold the protractor, the problem of inaccurate drawing caused by hand shake of the teacher is avoided, and the teacher can conveniently draw the drawing on the blackboard.

According to the chalk fixing device, the chalk is fixed on the sliding rod through the fixing block and the extrusion spring, so that drawing is convenient, and the chalk fixing device can adapt to chalks of different sizes through the fixing block and the extrusion spring.

The utility model is provided with the fixed convex rod, and the fixed convex rod is pushed inwards, so that the sliding rod connected with the fixed convex rod can rotate together with the fixed convex rod, thereby achieving the purpose of drawing a circle on the blackboard.

The utility model has a plurality of round holes on the slide bar, and the radius of the circle which can be drawn can be adjusted by adjusting the position of the limit bar clamped on the round holes, thereby leading a teacher to draw circles with different sizes on the blackboard.

According to the utility model, the leveling instrument is arranged on the protractor, a teacher can calibrate whether the ruler connected below the protractor is horizontally placed or not through the leveling instrument, and then a horizontal straight line can be drawn by using the ruler.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present utility model.

Fig. 2 is a schematic perspective view of a second embodiment of the present utility model.

Fig. 3 is a schematic partial perspective view of a first embodiment of the present utility model.

Fig. 4 is a partially disassembled perspective view of the first embodiment of the present utility model.

Fig. 5 is a schematic partial perspective view of a second embodiment of the present utility model.

Fig. 6 is a partially disassembled perspective view of the second embodiment of the present utility model.

Fig. 7 is a schematic view of a third partial cross-sectional perspective structure of the present utility model.

Fig. 8 is a schematic view of a fourth partial cross-sectional perspective structure of the present utility model.

Fig. 9 is a schematic view of a fifth partial cross-sectional perspective structure of the present utility model.

The marks of the components in the drawings are as follows: 1_protractor, 2_magnet, 3_ruler, 4_fixed protruding rod, 5_return spring, 6_slide bar, 7_fixed block, 8_compression spring, 9_stop lever, 10_compression spring, 11_level.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

1-9, including protractor 1, ruler 3 and magnet 2, protractor 1 below fixedly connected with ruler 3, one side fixedly connected with two magnet 2 of protractor 1, two magnet 2 is used for fixing the protractor on the blackboard.

When a teacher needs to make a drawing on a blackboard, the protractor 1 can be fixed on the blackboard by the magnet 2 on the rear side of the protractor 1.

Example 2

On the basis of embodiment 1, as shown in 1-9, the angle gauge further comprises a fixed protruding rod 4 and a return spring 5, wherein a clamping groove is formed in the center of the lower portion of the angle gauge 1, the fixed protruding rod 4 is connected in the clamping groove of the angle gauge 1 in a sliding mode, a bulge is arranged on the fixed protruding rod 4, the return spring 5 is fixedly connected to the fixed protruding rod 4, one end of the return spring 5 is fixedly connected with the angle gauge 1, the return spring 5 is located between the fixed protruding rod 4 and the angle gauge 1, and the return spring 5 is used for resetting the fixed protruding rod 4.

Still including slide bar 6, fixed block 7 and extrusion spring 8, sliding connection has slide bar 6 on the fixed protruding pole 4, it has a plurality of round hole to open on the slide bar 6, the one end sliding connection of slide bar 6 has fixed block 7, fixedly connected with extrusion spring 8 in the slide bar 6, the one end and the fixed block 7 fixed connection of extrusion spring 8, extrusion spring 8 is used for making fixed block 7 reset and blocks the chalk.

The using method comprises the following steps: the teacher pushes the fixed block 7 leftwards, the fixed block 7 moves leftwards to enable the extrusion spring 8 to be compressed, the teacher puts chalk into a round hole at one end of the sliding rod 6, the teacher releases the fixed block 7 by hands, the extrusion spring 8 resets and can drive the fixed block 7 to move rightwards, and the fixed block 7 moves rightwards to clamp the chalk.

When a teacher needs to draw a circle, the fixing convex rod 4 is pressed inwards, the reset spring 5 is compressed, after the fixing convex rod 4 is pressed, the protrusion of the fixing convex rod 4 moves backwards, so that the fixing convex rod 4 can rotate in the protractor 1, the teacher rotates the sliding rod 6, the sliding rod 6 rotates to drive the fixing convex rod 4 to rotate, the sliding rod 6 rotates to drive a chalk fixed at one end of the sliding rod 6 to draw a circle on a blackboard, after the circle is drawn, the teacher does not press the fixing convex rod 4 any more, the reset spring 5 resets to drive the fixing convex rod 4 to reset, and the protrusion on the fixing convex rod 4 is clamped on a clamping groove on the protractor 1 and cannot rotate any more.

The novel sliding rod is characterized by further comprising a limiting rod 9 and a compression spring 10, wherein the upper part of the fixed protruding rod 4 is connected with the limiting rod 9 in a sliding mode, the compression spring 10 is arranged between the limiting rod 9 and the fixed protruding rod 4, and the lower end of the limiting rod 9 is clamped into a round hole in the sliding rod 6.

When a teacher needs to draw circles with different sizes, the teacher moves the limiting rod 9 upwards, so that the lower end of the limiting rod 9 is not clamped in the round hole on the sliding rod 6 any more, the teacher can pull the sliding rod 6 to adjust the radius of the circles which can be drawn, after the radius is determined, the teacher moves the limiting rod 9 downwards, so that the lower end of the limiting rod 9 is clamped in the round hole on the sliding rod 6, and as a plurality of round holes are formed in the sliding rod 6, the teacher can draw circles with different sizes by using the diagraph.

The protractor comprises a level meter 11, and the level meter 11 is arranged on the protractor 1.

When a teacher needs to draw a horizontal straight line, the position of the protractor 1 can be adjusted through the level meter 11, so that the ruler 3 below the protractor 1 is horizontally fixed on the blackboard, and the teacher can draw the horizontal straight line.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present utility model.

Claims

1. A diagramming device, characterized in that: the angle gauge comprises an angle gauge, a ruler and magnets, wherein the ruler is fixedly connected below the angle gauge, and two magnets are fixedly connected to one side of the angle gauge;

still including fixed protruding pole and reset spring, open there is the draw-in groove lower part central point of protractor, sliding connection has fixed protruding pole in the draw-in groove of protractor, is equipped with the arch on the fixed protruding pole, fixedly connected with reset spring on the fixed protruding pole, reset spring one end and protractor fixed connection, just reset spring is located between fixed protruding pole and the protractor.

2. A plotter as defined in claim 1, wherein: the novel anti-collision device is characterized by further comprising a sliding rod, a fixed block and an extrusion spring, wherein the sliding rod is connected to the fixed protruding rod in a sliding mode, a plurality of round holes are formed in the sliding rod, one end of the sliding rod is connected with the fixed block in a sliding mode, the extrusion spring is fixedly connected in the sliding rod, and one end of the extrusion spring is fixedly connected with the fixed block.

3. A plotter as defined in claim 2, wherein: still including gag lever post and compression spring, fixed protruding pole upper portion slidingtype is connected with the gag lever post, install compression spring between gag lever post and the fixed protruding pole, the gag lever post lower extreme card is gone into in the round hole on the slide bar.

4. A diagrammer according to claim 3, wherein: the angle gauge is characterized by further comprising a level gauge, wherein the level gauge is arranged on the angle gauge.