CN211138813U - A multifunctional teaching ruler - Google Patents

Abstract

The utility model relates to a teaching aid technical field specifically is a multi-functional teaching ruler, including main chi frame and two main rulers, main chi frame side is equipped with the standing groove, two main ruler tip are placed in the standing groove, main chi frame passes through the bolt fastening with the main ruler, at least one main ruler rotates with the bolt and is connected, be equipped with the length scale on the main ruler, be equipped with the angle scale on the main chi frame in the bolt outside, the tip that is close to main chi frame on the main ruler is equipped with the index of aiming at the angle scale, the tip that main chi frame was kept away from to two main rulers is equipped with chalk groove and nail post groove respectively. According to the scheme, the angle can be measured according to the angle scales pointed by indexes on the main ruler after the main ruler rotates, the nail posts and the chalks are arranged at the end parts of the two main rulers respectively, the nail posts are stabilized on the blackboard, the chalks are pressed on the blackboard, and the chalks rotate around the nail posts to draw circles, so that the problem that the prior art cannot simultaneously measure straight lines, measure angles, draw straight lines and draw circles is solved.

Description

A multifunctional teaching ruler

technical field

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

Background technique

In today's classroom teaching, teachers use a variety of teaching tools. Although there are high-tech computers and projectors, the use of blackboards still occupies a large proportion in teaching, especially in mathematics. In geometry and other teaching that requires drawing, we often see teachers using various wooden teaching aids. These teachings are large in size and single in function, which are neither portable nor very convenient to use. Traditional teaching tools mainly include triangular rulers, rulers and compasses, which are troublesome to use and carry, and inconvenient to place after use, which can easily lead to cluttered placement.

The Chinese Patent Publication No. CN108340712A discloses a multifunctional magnetic ruler, which includes a ruler, a circular part, a positioning block and a rotating block. The positioning block is provided with a magnetic suction block, and a ring scale is printed on the top surface of the positioning block. , the rotating block is set above the positioning body, the rotating block is made of transparent material and is rotatably connected to the positioning block through the rotating shaft, and a marking line is printed on the rotating block along its radial direction; one end of the ruler is connected to the rotating block through a connecting rod, The marking line is parallel to the ruler; the drawing circle includes a bottom block and a positioning clip for fixing the chalk, the bottom block is connected with the other end of the ruler, a perforation is formed on the bottom block, and the positioning clip is fixed on the bottom block on one side of the perforation superior. The present invention can not only assist in drawing straight lines, but also can draw oblique lines according to required angles, and can draw circles with different diameters. However, the structure of the above solution is inconvenient to measure the angle, and the bottom of the above solution is not flat, so it is inconvenient to measure and draw a straight line.

Utility model content

The purpose of the utility model is to provide a multifunctional teaching ruler, so as to solve the problem that the prior art can not simultaneously measure straight lines, measure angles, draw straight lines and draw circles.

In order to achieve the above object, the basic scheme of the present utility model is as follows:

A multifunctional teaching ruler, comprising a main ruler frame and two main rulers, a placement slot is arranged on the side of the main ruler frame, and the ends of the two main rulers are placed in the placement slot, and the main ruler frame is connected to the main ruler. The ruler is fixed by bolts, at least one of the main rulers is rotatably connected with the bolts, the main ruler is provided with a length scale, the main ruler frame outside the bolt is provided with an angle scale, and the main ruler is close to the main ruler frame. The ends are provided with indicators for aligning the angle scale, and the ends of the two main rulers away from the main ruler frame are respectively provided with chalk grooves and nail post grooves, the chalk grooves are used for fixing chalk, and the nail post grooves are fixed in the There are nail posts, and a magnetic piece is fixed at the bottom of at least one of the main rulers.

Beneficial effects of the basic scheme: (1) In this scheme, at least one main ruler is rotatably connected to the bolt. After the main ruler is rotated, the angle measurement can be completed according to the angle scale pointed by the index on the main ruler. The two main rulers cooperate with each other. It can draw angles and triangles with specified angles; and the main ruler is provided with a length scale, which is convenient for measuring lines and drawing lines of specified length.

(2) In this scheme, the ends of the two main rulers are respectively provided with nail posts and chalk, the nail posts are stabilized on the blackboard, the opening angle between the two main rulers is adjusted, and the chalk is pressed on the blackboard, around the nails By rotating the column, a circle can be drawn, and by changing the angle between the two main rulers, circles with different diameters can be drawn.

(3) In this scheme, the two main rulers are fixed on the main ruler frame, the chalk and the nail post are fixed at the end of the main ruler, and the bottom of the main ruler is flat, so that the main ruler can be completely pressed on the blackboard, and it is convenient to complete the alignment of straight lines, angles, Drawing of shapes such as triangles.

(4) In this scheme, a magnetic part is fixed at the bottom of the main ruler. Most of the blackboards currently used are made of metal material. The magnetic parts can attract the blackboard. On the one hand, it is convenient to assist the main ruler when drawing line segments or measuring angles. Positioning, on the other hand, when the solution is not needed, the solution can be adsorbed on the corner of the blackboard, which is convenient for storage and placement, without clutter, and easy to take.

Further, a laser pointer is fixed at the end of any one of the main rulers away from the main ruler frame, a placement slot is set on the side of the main ruler, a battery box is placed in the placement slot, and a switch is installed on the side of the placement slot. , the battery box and the switch are electrically connected with the laser pointer. The laser pointer is easy to point out the target on the blackboard, which is more convenient for teaching.

Further, a spirit level is also fixed on the side of any one of the main rulers. A spirit level is capable of level measurement.

Further, the nail post and the nail post groove are detachably connected, and an elastic rubber ring is fixed in the nail post groove. The end of the nail column is relatively sharp. When the compass function of this scheme is not needed, the nail column can be removed to avoid accidental injury to teachers or students during the teaching process. The elastic rubber ring can stirrup the nail column and avoid nailing. The column is loose and slipped.

Further, the two main rulers are rotatably connected with the bolts, and the main ruler frames outside the two bolts are provided with angle scales, and the ends of the two main rulers close to the main ruler frame are provided with alignment angle scales. index of. Both the two main rulers can be rotated, and are provided with corresponding indicators and angle scales, so that the solution can measure and draw a wider range of angles.

Further, the connection between the main ruler frame and the upper end faces of the two main rulers is in a matching circular arc shape. The arc shape that matches each other can ensure the smooth rotation of the two main rulers, and maintain the fit with the main ruler frame during the rotation process. Case.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model embodiment;

Fig. 2 is the structural representation of the bottom of the utility model embodiment;

Fig. 3 is the concrete structure schematic diagram of the main ruler frame and the main ruler connection part in the embodiment of the present utility model;

4 is a schematic diagram of the specific structure of the nail post and the nail post groove in the embodiment of the present invention;

5 is a schematic diagram of the specific structure of the chalk and the chalk groove in the embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The reference signs in the accompanying drawings include: main ruler frame 1, bolt 2, index 3, length scale 4, main ruler 5, laser pointer 6, chalk 7, nail post 8, battery box 9, switch 10, level 11, Angle scale 12, nail post groove 13, chalk groove 14, elastic rubber ring 15, nut 16, magnet 17.

Example

Basically as shown in Figures 1 and 2: a multifunctional teaching ruler, including a main ruler frame 1 and two main rulers 5, combined with Figure 3, the side of the main ruler frame 1 is provided with a placement slot, and two main rulers are provided. The end of the ruler 5 is placed in the placement slot, the main ruler frame 1 and the main ruler 5 are fixed by bolts 2 and nuts, and the connection between the main ruler frame 1 and the upper end faces of the two main rulers 5 is a matching arc shape, and the two The main ruler 5 is rotatably connected with the bolt 2, and the main ruler frame 1 outside the two bolts 2 is provided with an angle scale 12, and the ends of the two main rulers 5 close to the main ruler frame 1 are provided with an alignment angle scale 12. indicator 3. The main ruler 5 is provided with a length scale 4, and the bottoms of the two main rulers 5 are fixed with magnets 17. As shown in FIG. 4 and FIG. 5, the ends of the two main rulers 5 away from the main ruler frame 1 are respectively provided with chalk grooves 14. And the nail post groove 13 , the chalk groove 14 is used for fixing the chalk 7 , the nail post 8 is clamped in the nail post groove 13 , and the elastic rubber ring 15 is fixed in the nail post groove 13 .

A laser pointer 6 is fixed at the end of a main ruler 5 with a chalk groove 14 away from the main ruler frame 1, a placement slot is set on the side of the main ruler 5, a battery box 9 is placed in the placement slot, and a switch is installed on the side of the placement slot. 10. The battery box 9 and the switch 10 are electrically connected to the laser pointer 6 . A spirit level 11 is also fixed on the side of the main ruler 5 with the chalk groove 14 through screws.

The specific implementation process is as follows: when it is necessary to measure the distance or draw a straight line: press the bottom of this embodiment at a designated position to perform the corresponding measurement or draw a straight line.

When it is necessary to measure the angle: coincide the inner side of one main ruler 5 with one side of the corner, turn the other main ruler 5 so that the inner side of the other main ruler 5 coincides with the other side of the corner, and then read out the two indicators The angle scale 12 pointed to by 3, the degree added by the two scales is the degree of the measured angle.

It is necessary to draw an angle of a specific degree or a triangle with a specific angle and side length: Rotate the two main rulers 5 to keep the required angle between the two main rulers 5, then place the two main rulers 5 on the blackboard, along the By touching the sides of the two main rulers 5, you can draw an angle of a specific degree; by drawing the two sides of the angle of a specific degree according to the side length of the triangle, you can draw a triangle with a specific angle and side length.

When a circle needs to be drawn: stabilize the nail post 8 on the blackboard, adjust the opening angle between the two main rulers 5, press the chalk 7 on the blackboard, and turn it around the nail post 8 to draw a circle. The angle between the two main rulers 5 can draw circles with different diameters.

In addition, the laser pointer 6 in this embodiment can be used for pointing and explaining in the teaching process, and the level 11 can be used for level measurement.

It should be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

The above are only examples of the present utility model, and common knowledge such as the well-known specific structures and characteristics in the scheme has not been described too much here. Those of ordinary skill in the art know that the utility model belongs to the technical field before the filing date or the priority date. General technical knowledge, can know all the prior art in this field, and have the ability to apply conventional experimental means before the date, those of ordinary skill in the art can, under the inspiration given in this application, combine their own ability to perfect and implement this solutions, some typical well-known structures or well-known methods should not be obstacles to those skilled in the art from practicing the present application. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present utility model, several deformations and improvements can also be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the present utility model. The effect of the implementation of the new model and the practicability of the patent. The scope of protection claimed in this application should be based on the content of the claims, and the descriptions of the specific implementation manners in the description can be used to interpret the content of the claims.

Claims (6)

1. a multifunctional teaching ruler, is characterized in that: comprise main ruler frame and two main rulers, described main ruler frame side is provided with placement groove, and two described main ruler ends are placed in the placement groove, so The main ruler frame and the main ruler are fixed by bolts, and at least one of the main rulers is rotatably connected with the bolts. The main ruler is provided with a length scale, and the main ruler frame outside the bolt is provided with an angle scale. The ends close to the main ruler frame are provided with indicators for aligning the angle scale, and the ends of the two main rulers away from the main ruler frame are respectively provided with chalk grooves and nail post grooves, and the chalk grooves are used to fix the chalk, so A nail post is fixed in the nail post groove, and a magnetic piece is fixed at the bottom of at least one of the main rulers. 2. A kind of multifunctional teaching ruler according to claim 1, it is characterized in that: the end of any one described main ruler away from the main ruler frame is fixed with a laser pointer, and the side of the main ruler is provided with a placement groove, so A battery box is placed in the placement slot, a switch is installed on the side of the placement slot, and the battery box and the switch are electrically connected with the laser pointer. 3 . The multifunctional teaching ruler according to claim 2 , wherein a spirit level is also fixed on the side of any one of the main rulers. 4 . 4 . The multifunctional teaching ruler according to claim 3 , wherein the nail post and the nail post groove are detachably connected, and an elastic rubber ring is fixed in the nail post groove. 5 . 5. A kind of multifunctional teaching ruler according to claim 4, it is characterized in that: two described main rulers are all connected with bolts in rotation, and the main ruler frame outside the two bolts is provided with angle scales, and two The ends of the main ruler close to the main ruler frame are provided with indicators for aligning the angle scale. 6 . The multifunctional teaching ruler according to claim 1 , wherein the connection between the main ruler frame and the upper end faces of the two main rulers is a matching arc shape. 7 .

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