CN216331117U

CN216331117U - Be applied to supplementary marking device of blackboard coordinate

Info

Publication number: CN216331117U
Application number: CN202122726178.2U
Authority: CN
Inventors: 李林
Original assignee: Guangzhou Zhuowen Education Technology Co ltd
Current assignee: Guangzhou Zhuowen Education Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-19
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a coordinate auxiliary marking device applied to a blackboard, which comprises an outer frame and an inner frame arranged on the inner side of the outer frame, wherein a sliding rail is formed between the outer frame and the inner frame, two sliding shafts are symmetrically arranged in the sliding rail by taking the center of the inner frame as a center, a telescopic auxiliary ruler is connected between the two sliding shafts, and a circular angle ruler is arranged at the staggered position of the telescopic auxiliary ruler and the inner wall of the inner frame.

Description

Be applied to supplementary marking device of blackboard coordinate

Technical Field

The utility model relates to a teaching aid, in particular to a blackboard coordinate auxiliary marking device.

Background

The teacher often need carry out the drawing of figure on the blackboard with the help of the teaching set square at the teaching in-process to in order to draw better figure, more accurate and the better figure of teaching effect, but because the teacher draws the figure in-process and takes teaching chi not only hand fatigue for a long time, the not accurate scheduling problem of figure angle of drawing moreover.

Thus, further improvements are needed in the existing teaching aids.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a coordinate auxiliary scribing device applied to a blackboard, which can realize the rapid drawing of blackboard graphs and ensure the drawing quality and accuracy.

In order to achieve the purpose, the utility model adopts the following scheme:

be applied to supplementary marking device of blackboard coordinate, including outer frame with be provided with in the inboard inner frame of outer frame, outer frame with form the slide rail between the inner frame, in the slide rail with inner frame central symmetry is provided with two sliding shafts, two be connected with flexible supplementary chi between the sliding shaft, flexible supplementary chi with inner frame inner wall staggered position is provided with circular angle chi.

Furthermore, a plurality of connecting plates are arranged between the outer frame and the inner frame for connection and fixation.

Furthermore, the outer frame corners are respectively provided with mounting holes.

Further, the inner frame outer wall shape is a result of inward deflection of the outer frame inner wall shape.

Further, the telescopic auxiliary ruler comprises an upper rod and a lower rod, and a guide structure is arranged between the upper rod and the lower rod.

Further, scales are arranged on the edges of the upper rod and the lower rod.

Further, the slide rail edge is provided with the fillet.

In summary, compared with the prior art, the utility model has the beneficial effects that:

the utility model solves the defects of the existing teaching tool, and has the following advantages that the utility model is arranged at the edge of the blackboard, the position and the inclination angle of the telescopic auxiliary ruler can be freely adjusted according to the requirement of drawing the figure, so as to assist teachers to draw the figure comprehensively on the blackboard, simultaneously save time and labor, lead the teachers to teach more easily, draw the figure more accurately, and have simple structure and convenient use.

Drawings

FIG. 1 is a schematic diagram of one embodiment of the present invention;

FIG. 2 is a second schematic diagram of the present invention;

fig. 3 is a third schematic diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to FIGS. 1-3, the present invention provides

The auxiliary marking device applied to the blackboard coordinates comprises an outer frame 1 and an inner frame 2 arranged on the inner side of the outer frame 1, a sliding rail 3 is formed between the outer frame 1 and the inner frame 2, two sliding shafts 4 are symmetrically arranged in the sliding rail 3 with the center of the inner frame 2, an auxiliary telescopic ruler 5 is connected between the two sliding shafts 4, and circular angle rulers 6 are arranged on the staggered positions of the auxiliary telescopic ruler 5 and the inner wall of the inner frame 2;

the structure principle is as follows:

before use, the outer frame 1 and the inner frame 2 are arranged on the outer edge of a blackboard in a sleeved mode, and when a graph is drawn, the position and the inclination angle of the telescopic auxiliary ruler 5 are freely adjusted according to the position, the coordinates and the inclination of lines of the graph which needs to be drawn by a teacher;

in the adjusting process, the two sliding shafts 4 move along the path of the sliding rail 3 and move according to the inclination angle and the placing position of the telescopic auxiliary ruler 5, and the telescopic auxiliary ruler 5 can freely stretch and retract at the moment in the adjusting process due to the fact that the distance between the two sliding shafts 4 can change, and the two ends of the telescopic auxiliary ruler 5 are guaranteed to be connected all the time.

A plurality of connecting plates are arranged between the outer frame 1 and the inner frame 2 for connection and fixation.

The corners of the outer frame 1 are respectively provided with mounting holes 200.

The shape of the outer wall of the inner frame 2 is obtained by inwards offsetting the shape of the inner wall of the outer frame 1.

The telescopic auxiliary ruler 5 comprises an upper rod 501 and a lower rod 502, and a guide structure 503 is arranged between the upper rod 501 and the lower rod 502.

The edges of the upper rod 501 and the lower rod 502 are provided with scales.

The corners of the sliding rail 3 are provided with fillets.

While there have been shown and described the fundamental principles and principal features of the utility model and advantages thereof, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are given by way of illustration of the principles of the utility model, but is susceptible to various changes and modifications without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Be applied to supplementary marking device of blackboard coordinate, its characterized in that: including outer frame (1) and be provided with in outer frame (1) inboard inner frame (2), outer frame (1) with form slide rail (3) between inner frame (2), in slide rail (3) with inner frame (2) central symmetry is provided with two sliding shafts (4), two be connected with flexible supplementary chi (5) between sliding shaft (4), flexible supplementary chi (5) with inner frame (2) inner wall staggered position is provided with circular angle chi (6).

2. The device for assisting in drawing line of blackboard coordinates according to claim 1, wherein: a plurality of connecting plates are arranged between the outer frame (1) and the inner frame (2) for connection and fixation.

3. The device for assisting in drawing line of blackboard coordinates according to claim 2, wherein: the corner of the outer frame (1) is provided with mounting holes (200).

4. The device for assisting in drawing line of blackboard coordinates according to claim 1, wherein: the shape of the outer wall of the inner frame (2) is obtained by inward deviation of the shape of the inner wall of the outer frame (1).

5. The device for assisting in drawing line of blackboard coordinates according to claim 1, wherein: the telescopic auxiliary ruler (5) comprises an upper rod (501) and a lower rod (502), and a guide structure (503) is arranged between the upper rod (501) and the lower rod (502).

6. The device for assisting in drawing line of blackboard coordinates according to claim 5, wherein: scales are arranged on the edges of the upper rod (501) and the lower rod (502).

7. The device for assisting in drawing line of blackboard coordinates according to claim 1, wherein: and the corners of the sliding rail (3) are provided with fillets.