CN213322420U

CN213322420U - Economics teaching board

Info

Publication number: CN213322420U
Application number: CN202021746540.1U
Authority: CN
Inventors: 吴雨佳
Original assignee: Second Affiliated Hospital of Zhengzhou Unviersity
Current assignee: Second Affiliated Hospital of Zhengzhou Unviersity
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-06-01
Anticipated expiration: 2030-08-19

Abstract

An economics teaching board, which effectively solves the problems of time and labor waste of the existing teaching board; the blackboard eraser comprises a bottom plate in the left and right directions, wherein a writing board is arranged at the upper end of the bottom plate, the writing board is connected with a U-shaped plate with a forward opening in a sliding manner, rectangular grooves which are in the front and back directions and are communicated with the left and right sides are respectively formed in the left and right ends of the U-shaped plate, rectangular blocks are connected in the rectangular grooves in a sliding manner, a left and right axial rotating shaft is connected between the two rectangular blocks in a rotating manner, rotating blocks in the left and right directions are arranged on the rotating shafts, clamping grooves are respectively formed in the front and back ends; the novel multifunctional electric heating cooker is simple in structure, novel in conception, convenient to use and high in practicability.

Description

Economics teaching board

Technical Field

The utility model relates to an economics teaching apparatus technical field, especially an economics teaching board.

Background

In economics teaching, a teacher often needs to write on a blackboard on a teaching board to explain relevant contents to students, meanwhile, the teacher often draws some pie charts, column charts and the like as an auxiliary to enable the students to understand better, in a classroom, the teacher often explains while writing on the blackboard, and when the teaching board is full of books, the teacher can use a blackboard eraser to wipe off the explained contents and rewrite the contents to be explained next.

In the process of wiping the teaching board by a teacher, the teaching board needs to be wiped off by holding the board wiper bit by bit, so that the teaching time is delayed, and the teaching progress is influenced due to physical strength consumption.

SUMMERY OF THE UTILITY MODEL

To the situation, in order to compensate the deficiency of the prior art, the utility model aims at providing an economics teaching board, the effectual problem of wasting time and energy of having solved current teaching board and cleaning.

The technical scheme of its solution is, the utility model discloses a bottom plate of left right direction, the bottom plate upper end is equipped with the clipboard, sliding connection has the U-shaped board that the opening was towards the front on the clipboard, the rectangular channel that the fore-and-aft direction just link up about and is seted up respectively at both ends about the U-shaped board, sliding connection has the rectangular block in the rectangular channel, rotate between two rectangular blocks and be connected with about axial pivot, be equipped with the turning block of left right direction in the pivot, the draw-in groove has been seted up respectively at both ends around the turning block, the dismantlement is connected with the blackboard eraser in the draw-in.

Compared with the prior art, the beneficial effects of the utility model are that: the clipboard that is equipped with, the blackboard eraser, change piece etc. can be cleaned it fast when the clipboard is full of writing, need not the teacher and hold the blackboard eraser with the hand and carry out repeated cleaning, time saving and labor saving, the pivot that is equipped with, the spacing ring, spacing post etc., can realize the blackboard eraser of front side and the quick switching of the blackboard eraser of rear side, save time, do not hinder the teaching process, can realize simultaneously that the dismantlement to the blackboard eraser is washd, the drag hook that is equipped with, can be convenient for the teacher take out the blackboard eraser from the draw-in groove and wash, this simple structure, novel conception, high durability and convenient use, therefore, the clothes hanger is strong in practicability.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a rear perspective view of the present invention.

Fig. 3 is a full-section top perspective view of the utility model.

Fig. 4 is a perspective view of the utility model with the writing board removed.

Fig. 5 is a left perspective view of the utility model with the writing board removed.

Fig. 6 is a right perspective view of the utility model with the writing board removed.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

By figure 1 to 6, bottom plate 1 including left right direction, 1 upper end of bottom plate is equipped with clipboard 2, sliding connection has opening U-shaped plate 3 forward on clipboard 2, rectangular channel 4 that the fore-and-aft direction just link up about and is seted up respectively at both ends about U-shaped plate 3, sliding connection has rectangular block 5 in the rectangular channel 4, rotate between two rectangular blocks 5 and be connected with about axial pivot 6, be equipped with the turning block 7 of left right direction on the pivot 6, draw-in groove 8 has been seted up respectively at both ends around the turning block 7, the dismantlement is connected with eraser 9 in the draw-in groove 8, eraser 9 outer terminal surface can with clipboard 2 preceding terminal surface contact.

In order to facilitate pulling the rectangular block 5, the rectangular block 5 is provided with U-shaped connecting plates 10 with backward openings, a pull rod 11 positioned in front of the rotating block 7 is arranged between the two connecting plates 10, the front end of the U-shaped plate 3 is provided with a U-shaped pressing plate 12 with backward openings, and two compression springs 13 which are axially opposite in the front and back direction and are opposite in the left and right direction are arranged between the pull rod 11 and the pressing plate 12.

In order to prevent the eraser 9 from falling off when the rotating block 7 rotates, a sliding groove 14 in the left-right direction is formed on the upper side wall of the clamping groove 8, and a sliding block 15 capable of sliding in the sliding groove 14 is arranged at the upper end of the eraser 9.

In order to facilitate the resetting of the eraser 9, the left side and the right side of the rear end of the U-shaped plate 3 are respectively connected with the bottom plate 1 through a resetting spring 16.

For the convenience of limiting the rotating shaft 6, the left end of the rotating shaft 6 penetrates through the rectangular block 5 and is coaxially provided with the limiting plate 17, the rotating shaft 6 is provided with the limiting ring 18 positioned between the limiting plate 17 and the left rectangular block 5 in a coaxial sliding connection mode, the upper side and the lower side of the left rectangular block 5 are respectively provided with a left axial limiting hole 19 and a right axial limiting hole 19, the right end of the limiting ring 18 is provided with a left axial limiting column 20 capable of being inserted into the limiting hole 19, and the rotating shaft 6 is sleeved with a limiting spring 21 positioned between the limiting plate 17 and the limiting ring 18.

For convenience of use, the lower end of the bottom plate 1 is coaxially provided with a supporting plate 23 through an up-down axial upright post 22, and the right end of the eraser 9 is provided with a draw hook 24.

The utility model discloses when using, at first remove backup pad 23 to teaching department, the teacher begins the blackboard writing explanation, when clipboard 2 is written to full, the teacher right hand is held clamp plate 12 and is pulled downwards, clamp plate 12 drives U-shaped plate 3 and slides downwards on clipboard 2, extrude reset spring 16 downwards simultaneously, U-shaped plate 3 drives blackboard eraser 9 and slides downwards, the rear end face of blackboard eraser 9 of rear side contacts clipboard 2 this moment, in the process of sliding downwards, wipe the content on clipboard 2, loosen clamp plate 12 after wiping the completion, because the ascending elasticity of reset spring 16, U-shaped plate 3 drives blackboard eraser 9 and slides upwards, wipe clipboard 2 once more, guarantee to wipe the cleanliness, get back to the initial position after upwards sliding a distance;

when the U-shaped plate 3 returns to the initial position, the teacher can write again, when the blackboard is full, the operation is repeated again to pull the movable platen 12 downwards and loosen the movable platen 12, so as to wipe the writing board 2, when the blackboard eraser 9 on the rear side is dirty and has poor cleaning effect after being used for a period of time, the medical staff pulls the movable platen 12 downwards, pulls the pull rod 11 forwards while pulling downwards, the pull rod 11 pushes the limit spring 21 forwards, the pull rod 11 drives the rectangular block 5 to slide forwards in the rectangular groove 4 through the connecting plate 10, the rectangular block 5 drives the blackboard eraser 9 to slide forwards through the rotating shaft 6, after sliding for a distance, the rear end face of the blackboard eraser 9 on the rear side is separated from the contact with the front end face of the writing board 2, at the moment, the teacher holds the limit ring 18 with the left hand and pulls the teacher with the limit ring 18 driving the limit column 20 to slide leftwards, and simultaneously pushes the pressure spring 13 leftwards, after sliding for a distance leftwards, the limit, the limit on the rotating shaft 6 is released, the limiting ring 18 is rotated anticlockwise at the moment, the limiting ring 18 drives the rotating block 7 to rotate anticlockwise through the rotating shaft 6, the rotating block 7 drives the eraser 9 to rotate anticlockwise, and the rotation is stopped when the eraser is rotated 180 degrees;

the position of the eraser 9 at the front side is exchanged with the position of the eraser 9 at the rear side, the limiting ring 18 is loosened, the limiting ring 18 drives the limiting post 20 to slide rightwards due to the right elasticity of the pressure spring 13, the limiting post 20 is inserted into the limiting hole 19 at the lower side after sliding for a certain distance, the secondary limiting of the rotating shaft 6 is realized, the pressing plate 12 and the pull rod 11 are loosened, the pull rod 11 drives the rotating block 7 to slide backwards through the connecting plate 10 due to the backward elasticity of the limiting pressure spring 13, the original position is returned after sliding for a certain distance, and the original eraser 9 at the front side, namely the rear end face of the unused eraser 9, is contacted with the front end face of the writing board 2 and can be used again;

after using a period again, when two blackboard erasers 9 all cross dirty clean effect not good, the teacher held drag hook 24 and stimulates right, and drag hook 24 drives blackboard eraser 9 and slides to the right in draw-in groove 8, takes out blackboard eraser 9 from draw-in groove 8 after sliding a period, washs blackboard eraser 9 and dries, inserts again in draw-in groove 8 and can reuse, and slider 15 card is in spout 14, prevents when changeing 7 rotations, and blackboard eraser 9 drops because gravity reason from draw-in groove 8.

Claims

1. The utility model provides an economics teaching board, bottom plate (1) including the left and right sides direction, a serial communication port, bottom plate (1) upper end is equipped with clipboard (2), sliding connection has opening U-shaped plate (3) forward on clipboard (2), rectangular channel (4) that the fore-and-aft direction just link up about and are seted up respectively at both ends about U-shaped plate (3), sliding connection has rectangular block (5) in rectangular channel (4), rotate between two rectangular block (5) and be connected with left and right sides axial pivot (6), be equipped with on pivot (6) and control direction commentaries on classics piece (7), draw-in groove (8) have been seted up respectively at both ends around commentaries on classics piece (7), draw-in groove (8) internal disassembly is connected with board eraser (9), the outer terminal surface of board eraser (9) can with.

2. The economics teaching board according to claim 1, wherein the rectangular block (5) is provided with a U-shaped connecting plate (10) with a backward opening, a pull rod (11) located in front of the rotating block (7) is arranged between the two connecting plates (10), the U-shaped pressing plate (12) with a backward opening is arranged at the front end of the U-shaped plate (3), and two compression springs (13) are arranged between the pull rod (11) and the pressing plate (12) and are axially opposite to each other in the front-back direction and in the left-right direction.

3. The economics teaching board according to claim 1, wherein the side wall of the slot (8) is equipped with a sliding slot (14) in left and right direction, and the upper end of the eraser (9) is equipped with a sliding block (15) capable of sliding in the sliding slot (14).

4. The economics teaching board according to claim 1, wherein the U-shaped board (3) is connected to the bottom board (1) via return springs (16) at the left and right sides of the rear end.

5. The economics teaching board of claim 1, wherein the left end of the rotating shaft (6) penetrates through the rectangular block (5) and is coaxially provided with the limiting plate (17), the rotating shaft (6) is coaxially and slidably connected with the limiting ring (18) located between the limiting plate (17) and the left rectangular block (5), the upper side and the lower side of the left end of the left rectangular block (5) are respectively provided with a left axial limiting hole (19) and a right axial limiting post (20) capable of being inserted into the limiting hole (19), the right end of the limiting ring (18) is provided with a left axial limiting post (20) and a right axial limiting spring (21) located between the limiting plate (17) and the limiting ring (18) is sleeved on the rotating shaft (6).

6. The economics teaching board according to claim 1, wherein the lower end of the bottom plate (1) is coaxially provided with a support plate (23) through an up-down axial column (22), and the right end of the eraser (9) is provided with a draw hook (24).