CN219650911U

CN219650911U - Check line drawing device for blackboard writing

Info

Publication number: CN219650911U
Application number: CN202320953800.XU
Authority: CN
Inventors: 邱红艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-09-08
Anticipated expiration: 2033-04-25

Abstract

The utility model relates to the technical field of educational tools and discloses a square line drawing device for blackboard writing, which comprises a line drawing device main body and a horizontal plate, wherein the opposite ends of the line drawing device main body are respectively and rotatably connected with a second connecting rod, the right sides of the opposite ends of the line drawing device main body, which correspond to the second connecting rods, are respectively provided with a second sliding groove, the opposite ends of the second sliding grooves are respectively and slidably connected with a second sliding block, the opposite ends of the second sliding blocks are respectively and rotatably connected with a first connecting rod, and the left ends of the first connecting rods are respectively and rotatably connected with the right ends of the second connecting rods. In the utility model, the second sliding block slides along the inner wall of the second sliding groove, and the friction force between the second sliding block and the second sliding groove can prevent the position of the second sliding block from changing, so that the distance between the line drawing devices is prevented from changing, the distance between the line drawing devices can be changed, the distance between drawn line segments is controlled, and the size of the later square is controlled.

Description

Check line drawing device for blackboard writing

Technical Field

The utility model relates to the technical field of educational tools, in particular to a grid scriber for blackboard writing.

Background

In the current Chinese teaching, in order to enable students to write square characters, the students need to write in the field characters and then write in the square to gradually form the writing habit of Chinese characters, at present, in the teaching of teachers, in order to demonstrate students, the teachers need to draw the field characters or the square on a blackboard first and write in the blackboard.

When drawing square, draw the square with the ruler generally, but in the setting-out in-process hardly guarantee the horizontal and vertical of square line segment, influence square word's pleasing to the eye to the interval between the square is fixed when using, can't adjust the size of interval.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a grid scriber for blackboard writing.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a square scriber for blackboard writing, includes scriber main part and horizontal plate, the equal rotation of the relative one end of scriber main part is connected with the second connecting rod, the right side that the relative one end of scriber main part corresponds the second connecting rod all is provided with the second spout, the equal sliding connection of the relative one end of second spout has the second slider, the equal rotation of the relative one end of second slider is connected with the head rod, the equal rotation of head rod left end is connected at the second connecting rod right-hand member.

As a further description of the above technical solution:

the horizontal plate front end is provided with first spout, first spout inner wall sliding connection has first slider, first slider front end rotates and is connected with the fixed axle.

As a further description of the above technical solution:

the left side of the rear end of the line drawing device main body at the rear side is fixedly connected to the front end of the fixing shaft.

As a further description of the above technical solution:

the left end of the scriber main body is provided with a circular groove, and the front end and the rear end of the circular groove are fixedly connected with fixing blocks.

As a further description of the above technical solution:

the inner wall of the circular groove is provided with a fixer, both ends all are provided with the recess around the fixer, recess and fixed block shape agree with each other.

As a further description of the above technical solution:

the upper end and the lower end of the groove are fixedly connected with elastic clamping blocks, and the length formed by the elastic clamping blocks and the inner side of the groove is the same as the length of the fixed block.

As a further description of the above technical solution:

the scriber body is symmetrical about a contact line of the second connection rod.

As a further description of the above technical solution:

the distance between the fixer and the blackboard is equal to the distance of the lower half part of the first chute.

The utility model has the following beneficial effects:

1. according to the utility model, the line drawing device main body is extruded, the position of the second connecting rod is changed, the distance between the line drawing device main bodies is shortened because the length of the second connecting rod is unchanged, at the moment, the second sliding block slides along the inner wall of the second sliding groove, the friction force between the second sliding block and the second sliding groove can prevent the position of the second sliding block from changing, so that the distance between the line drawing device main bodies is prevented from changing, the distance between the line drawing devices can be changed, the distance between drawn line segments is controlled, and the size of a later square is controlled.

2. According to the utility model, the chalk is fixed in the fixer through the fixer, then the fixer is inserted into the circular groove, the fixing block slides into the groove, and when the fixer reaches the bottom of the circular groove, the fixing block penetrates through the elastic clamping block and limits the fixing block through the elastic clamping block, so that the shaking is prevented, and the fixing block is convenient to detach and replace.

Drawings

Fig. 1 is a front top perspective view of a checkered line drawing device for blackboard writing;

fig. 2 is a schematic perspective view of a circular groove structure of a square line drawing device for blackboard writing;

FIG. 3 is a schematic perspective view of a groove structure of a square line drawing device for blackboard writing;

fig. 4 is a schematic perspective view showing the cross-sectional structure of a line drawing device main body of the square line drawing device for blackboard writing.

Legend description:

1. a first chute; 2. a horizontal plate; 3. a first slider; 4. a fixed shaft; 5. a first connecting rod; 6. a second slider; 7. a line drawing device body; 8. a second chute; 9. a second connecting rod; 10. a holder; 11. a fixed block; 12. a circular groove; 13. an elastic clamping block; 14. a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, one embodiment provided by the present utility model is: the utility model provides a square line drawing device for blackboard writing, including line drawing device main part 7 and horizontal plate 2, the equal rotation of the relative one end of line drawing device main part 7 is connected with second connecting rod 9, the right side that the relative one end of line drawing device main part 7 corresponds second connecting rod 9 all is provided with second spout 8, the equal sliding connection of the relative one end of second spout 8 has second slider 6, the equal rotation of the relative one end of second slider 6 is connected with head rod 5, head rod 5 left end is all rotated and is connected at the right-hand member of second connecting rod 9, through extrusion line drawing device main part 7, and the position of second connecting rod 9 can change, because the length of second connecting rod 9 is unchangeable, lead to the distance between the line drawing device main part 7 to shorten, at this moment second slider 6 slides along the inner wall of second spout 8, and the frictional force between second slider 6 and the second spout 8 can prevent that the position of second slider 6 from changing, thereby avoid the distance between the line drawing device main part 7 to change, consequently just can change the interval between the line drawing device, and the interval between the line drawing of control, and the control later stage is little.

Further explaining, the front end of the horizontal plate 2 is provided with a first chute 1, the inner wall of the first chute 1 is slidingly connected with a first sliding block 3, the front end of the first sliding block 3 is rotationally connected with a fixed shaft 4, the left side of the rear end of the rear side line drawing device main body 7 is fixedly connected with the front end of the fixed shaft 4, the angle of the line drawing device main body 7 is changed through the fixed shaft 4, when the language and literature education is carried out, the horizontal plate 2 is placed on the blackboard, the line drawing device main body 7 is picked up to draw the square on the blackboard, the language teacher writes the characters in the square for teaching, the left end of the line drawing device main body 7 is provided with circular grooves 12, the front end and the rear end of the circular grooves 12 are fixedly connected with fixed blocks 11, the inner wall of the circular grooves 12 is provided with a fixer 10, the front end and the rear end of the fixer 10 are respectively provided with a groove 14, the grooves 14 are matched with the shape of the fixing blocks 11, the upper end and the lower end of the grooves 14 are fixedly connected with elastic clamping blocks 13, the length formed by the inner sides of the elastic clamping blocks 13 and the grooves 14 is the same as that of the fixing blocks 11, chalk is fixed in the fixer 10 through the fixer 10, the fixer 10 is inserted into the circular groove 12, the fixing blocks 11 slide into the grooves 14, when the fixer 10 reaches the bottom of the circular groove 12, the fixing blocks 11 penetrate through the elastic clamping blocks 13 and limit the fixing blocks 11 through the elastic clamping blocks 13, shaking is prevented, so that the fixing blocks are convenient to detach and replace, the line marker body 7 is symmetrical about the contact line of the second connecting rod 9, and the distance between the fixer 10 and a blackboard is equal to the distance of the lower half part of the first sliding groove 1.

Working principle: firstly, through squeezing the line drawing device main body 7, and the position of the second connecting rod 9 can change, because the length of the second connecting rod 9 is unchanged, the distance between the line drawing device main bodies 7 is shortened, at this moment, the second sliding block 6 slides along the inner wall of the second sliding groove 8, and the friction force between the second sliding block 6 and the second sliding groove 8 can prevent the position of the second sliding block 6 from changing, thereby avoid the distance between the line drawing device main bodies 7 from changing, therefore, the distance between the line drawing devices can be changed, thereby controlling the distance between drawn line segments, further controlling the size of the later square, and fixing chalk in the fixer 10 through the fixer 10, afterwards, the fixer 10 is inserted into the circular groove 12, the fixed block 11 slides into the groove 14, when the fixer 10 reaches the bottom of the circular groove 12, at this moment, the fixed block 11 passes through the elastic clamping block 13 and limits the fixed block 11, and prevents shaking, therefore, when the square is convenient to detach and change, the square is needed to write in the upper text, place the horizontal plate 2 on the main body, and then the square is written by a teacher in the blackboard.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a blackboard is square scriber for book, includes scriber main part (7) and horizontal plate (2), its characterized in that: the utility model discloses a line drawing device, including line drawing device main part (7), connecting rod (5), connecting rod (9) are all rotated to the relative one end of line drawing device main part (7), and the right side that the relative one end of line drawing device main part (7) corresponds second connecting rod (9) all is provided with second spout (8), the equal sliding connection of the relative one end of second spout (8) has second slider (6), the relative one end of second slider (6) all rotates and is connected with connecting rod (5), connecting rod (5) left end all rotates and connects at second connecting rod (9) right-hand member.

2. A checkerboard marker for blackboard writing according to claim 1, wherein: the front end of the horizontal plate (2) is provided with a first sliding groove (1), the inner wall of the first sliding groove (1) is slidably connected with a first sliding block (3), and the front end of the first sliding block (3) is rotationally connected with a fixed shaft (4).

3. A checkerboard marker for blackboard writing according to claim 2, wherein: the left side of the rear end of the line drawing device main body (7) at the rear side is fixedly connected with the front end of the fixed shaft (4).

4. A checkerboard marker for blackboard writing according to claim 1, wherein: the left end of the scriber main body (7) is provided with a circular groove (12), and the front end and the rear end of the circular groove (12) are fixedly connected with fixing blocks (11).

5. A checkerboard marker for blackboard writing according to claim 4, wherein: the inner wall of the circular groove (12) is provided with a fixer (10), both ends all are provided with recess (14) around fixer (10), recess (14) and fixed block (11) shape fit.

6. A checkerboard marker for blackboard writing according to claim 5, wherein: elastic clamping blocks (13) are fixedly connected to the upper end and the lower end of the groove (14), and the length formed inside the elastic clamping blocks (13) and the groove (14) is identical to the length of the fixed block (11).

7. A checkerboard marker for blackboard writing according to claim 1, wherein: the scriber body (7) is symmetrical about the contact line of the second connecting rod (9).

8. A checkerboard marker for blackboard writing according to claim 5, wherein: the distance between the fixer (10) and the blackboard is equal to the distance of the lower half part of the first chute (1).