Combined multimedia writing board

Abstract

The invention discloses a combined multimedia writing board, and belongs to the technical field of writing boards. The combined multimedia writing board comprises a fixed support and two movable supports, a transverse movement mechanism is arranged among the fixed support and the movable supports, each movable support is connected with a front movable plate and a rear movable plate which are equal in weight, two plate lifting wheels are arranged at the top of each movable support, the front movable plate and the rear movable plate of each movable support are connected through two flexible cables, the two flexible cables of each movable support are arranged on the corresponding two plate lifting wheels respectively, longitudinal synchronous wheels are arranged on the two transverse sides of each front movable plate and the two transverse sides of each rear movable plate respectively, the movable supports are provided with longitudinal guide grooves matched with the longitudinal synchronous wheels, two longitudinal protruding rails opposite in protruding direction are arranged in each longitudinal guide groove, and first grooves matched with the longitudinal protruding rails are formed in the circle faces of the longitudinal synchronous wheels. The combined multimedia writing board is suitable for lecture theaters and other large places, and is reasonable in structure, even in layout, safe, reliable, high in plate face utilization rate and very practical.

Description

technical field [0001] The invention relates to the field of writing tablet technology. Background technique [0002] The multimedia writing board that can move freely is the standard configuration of the vast classrooms, especially the lecture halls. At present, there are two types of mobile multimedia writing boards that are commonly used. One is a multimedia writing board that can only be pushed and pulled left and right, and the other is a A so-called "universal tablet" that can move up and down as well as left and right. [0003] Application number is CN00240699.3 patent of invention " left and right push-pull blackboard " discloses a kind of blackboard that can move left and right, and it comprises the frame that is fixed on the wall and two blackboards that can move left and right on frame. [0004] The invention patent "a universal writing board" with the application number CN201220692013.6 discloses a writing board that can move up and down as well as left and righ...

AI Technical Summary

Problems solved by technology

[0005] The common feature of above two kinds of products is that they all only comprise two blackboards or writing boards, wherein each board can move left and right or left and right up and down, like this, when the area of ​​each board is very big, there will be inconvenience to use. Even if the writing board is pulled to the lowest end, it is not easy to write on the top of the writing board, so that the utilization rate of the writing board is reduced. In addition, if the writing board adopts an up and down movement mechanism with a counterweight, the overall weight will be increased. potential safety hazards, and in large lecture theaters, in order to meet the viewing needs of the audience in the back row, the writing board is often made very large. On the other hand, the writing board in the prior art generally uses sprockets when moving up and down. Synchronization is achieved by cooperating with the sprocket shaft, which increases the complexity of the structure and also increases the cost of the product

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