CN219115110U

CN219115110U - Multimedia blackboard structure

Info

Publication number: CN219115110U
Application number: CN202221196706.6U
Authority: CN
Inventors: 张雨嘉; 张南奵; 张辉
Original assignee: Beijing Hengchuang Zhiyuan Biotechnology Co ltd
Current assignee: Beijing Hengchuang Zhiyuan Biotechnology Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2023-06-02
Anticipated expiration: 2032-05-18

Abstract

The utility model discloses a multimedia blackboard structure, which comprises a movable blackboard, a fixed blackboard and a multimedia screen; the upper end and the lower end of the fixed blackboard are respectively provided with an upper cross beam and a lower cross beam; the upper cross beam and the lower cross beam are respectively provided with a positioning pin I; the locating pin I is positioned on an upper beam and a lower beam at the junction of the fixed blackboard and the multimedia screen; locating pins II are respectively arranged at corners of the upper end and the lower end of the movable blackboard; the locating pin I and the locating pin II are rotationally connected through a connecting rod. The movable blackboard has a simple and reasonable structure, adopts a rotary type or a turnover type, omits an exposed profile slideway, and effectively solves the technical problems in the prior art.

Description

Multimedia blackboard structure

Technical Field

The utility model belongs to the technical field of teaching equipment, and particularly relates to a multimedia blackboard structure.

Background

At present, the teaching blackboard consists of a movable blackboard, a fixed blackboard and a multimedia screen, wherein the movable blackboard can slide left and right and can just shade the multimedia screen. Corresponding sliding rails are arranged on the upper side and the lower side of the movable blackboard, the whole blackboard is realized by sliding the movable blackboard, or the movable blackboard slides to one side of the fixed blackboard, and the use of the multimedia screen is not affected.

The movable blackboard is supported by the sliding rail, the sliding rail mainly comprises a section bar, foreign matters such as chalk powder and chalk heads are easy to accumulate on the sliding rail, cleaning is inconvenient, and later sliding is inconvenient.

Disclosure of Invention

The utility model aims to solve the technical problem of inconvenient sliding of a blackboard in the prior art, and provides a multimedia blackboard structure for solving the defects in the prior art.

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

a multi-media blackboard structure comprises a movable blackboard, a fixed blackboard and a multi-media screen; the upper end and the lower end of the fixed blackboard are respectively provided with an upper cross beam and a lower cross beam; the upper cross beam and the lower cross beam are respectively provided with a positioning pin I; the locating pin I is positioned on an upper beam and a lower beam at the junction of the fixed blackboard and the multimedia screen; locating pins II are respectively arranged at corners of the upper end and the lower end of the movable blackboard; the locating pin I and the locating pin II are rotationally connected through a connecting rod.

Furthermore, hollowed-out parts are arranged in the areas of the upper cross beam and the lower cross beam, which correspond to the multimedia screen; after the movable blackboard is closed to cover the multimedia screen, a lock is arranged between the movable blackboard and a frame, an upper beam or a lower beam of the fixed blackboard.

Further, after the movable blackboard is opened to closed, the locating pin II is displaced, and the connecting rod rotates by 30-60 degrees.

Furthermore, the locating pin II is arranged in the middle of the upper end and the lower end of the movable blackboard.

The movable blackboard has a simple and reasonable structure, adopts a rotary type or a turnover type, omits an exposed profile slideway, and effectively solves the technical problems in the prior art.

Drawings

FIG. 1 is a schematic diagram of a mobile blackboard;

FIG. 2 is a schematic view of a stationary blackboard structure;

FIG. 3 is a schematic view of a multimedia screen covering status structure;

FIG. 4 is a schematic top view of FIG. 3;

FIG. 5 is a schematic top view of the open state of the movable blackboard;

FIG. 6 is a schematic top view of structure 2;

FIG. 7 is a top view of a structure 2 active blackboard open;

fig. 8 is a top view of the full opening of the structure 2 mobile blackboard.

In the figure, 1, a movable blackboard 2, a locating pin II 3, a fixed blackboard 4, a connecting rod 5, a multimedia screen 6, a locating pin I7, an upper cross beam 8 and a hollowed-out part.

Detailed Description

The following description of the embodiments of the present utility model will be made with reference to the accompanying drawings, in which it is apparent that some, but not all embodiments of the utility model are described below. 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.

Embodiment 1 according to fig. 1-5, a multimedia blackboard structure comprising a movable blackboard 1, a stationary blackboard 3 and a multimedia screen 5; the upper end and the lower end of the fixed blackboard are respectively provided with an upper cross beam 7 and a lower cross beam; the upper cross beam and the lower cross beam are respectively provided with a locating pin I6; the locating pin I is positioned on an upper beam and a lower beam at the junction of the fixed blackboard and the multimedia screen; locating pins II2 are respectively arranged at corners of the upper end and the lower end of the movable blackboard; the locating pin I and the locating pin II are rotationally connected through a connecting rod 4.

The upper cross beam and the lower cross beam are provided with hollowed-out parts 8 in the areas corresponding to the multimedia screen; after the movable blackboard is closed to cover the multimedia screen, a lock is arranged between the movable blackboard and a frame, an upper beam or a lower beam of the fixed blackboard.

The hollow part is arranged to facilitate heat dissipation of the multimedia screen, and can be canceled if the projection type multimedia screen is provided.

After the movable blackboard is opened to be closed, the locating pin II is displaced, and the connecting rod rotates by 30-60 degrees.

When the movable blackboard is used, the movable blackboard is directly rotated and opened like a door opening, and the movable blackboard can be opened by 180 degrees due to the extension of the connecting rod, so that the movable blackboard is attached to the fixed blackboard, and the use of a multimedia screen is not affected.

In order to prevent the movable blackboard from rotating by itself, corresponding magnets are respectively arranged in the opening state and the closing state for attraction.

Embodiment 2 is basically the same as embodiment 1 according to fig. 6 to 8, except that the positioning pin II is provided in the middle of the upper and lower ends of the movable blackboard.

The opening/closing mode is changed from the rotation of example 1 to the translation.

When the movable blackboard is used, the movable blackboard is pulled to one side, and the movable blackboard is translated in an arc shape by taking the connecting rod as the radius. Unlike the effect of embodiment 1, the back of the movable blackboard is forward after embodiment 1 is opened, and the front is also forward after this embodiment is opened.

Claims

1. A multi-media blackboard structure comprises a movable blackboard, a fixed blackboard and a multi-media screen; the upper end and the lower end of the fixed blackboard are respectively provided with an upper cross beam and a lower cross beam; the device is characterized in that positioning pins I are respectively arranged on the upper beam and the lower beam; the locating pin I is positioned on an upper beam and a lower beam at the junction of the fixed blackboard and the multimedia screen; locating pins II are respectively arranged at corners of the upper end and the lower end of the movable blackboard; the locating pin I and the locating pin II are rotationally connected through a connecting rod.

2. The structure of claim 1, wherein the upper and lower beams have hollowed-out parts in the areas corresponding to the multimedia screen; locks are arranged between the movable blackboard and the frame, the upper cross beam or the lower cross beam of the fixed blackboard.

3. A multi-media blackboard structure according to claim 1, wherein the movable blackboard is displaced from the open to the closed position by the positioning pin II, and the connecting rod is rotated by 30 ° -60 °.

4. The structure of claim 1, wherein the positioning pin II is disposed at the middle of the upper and lower ends of the movable blackboard.