Foldable and openable writing board

Abstract

The invention discloses a foldable and openable writing board which comprises a writing board main body, a tray, a rotating head, a plug pin and a handrail. The writing board main body is installed on the tray, the rotating head is connected with the tray and the handrail, a first arc-shaped groove and a second arc-shaped groove are formed in the two sides of the rotating head, a protrusion is arranged on the tray, a roller pin is arranged on the handrail, the protrusion and the roller pin are inserted into the first arc-shaped groove and the second arc-shaped groove respectively, the tray rotates relative to the rotating head through the protrusion and the first arc-shaped groove, the rotating head rotates relative to the handrail through the roller pin and the second arc-shaped groove, the plug pin is installed on the rotating head, and a limiting hole matched with the plug pin is formed in the tray. The limiting hole is provided with an inclined plane groove, and the plug pin enters the limiting hole from the inclined plane groove. The writing board has the advantages that the rotating angle and distance of the tray and the rotating head can be controlled, excessive rotation is avoided, friction between writing board mechanisms can be avoided, and use in production and life is facilitated.

Description

technical field [0001] The invention relates to the field of office furniture equipment, in particular to a foldable and unfoldable writing board. Background technique [0002] In some large-scale conferences and academic seminars, due to the limited space, generally only one stool is provided for the participants, especially the conference stool. Since there is no conventional table equipment, for the participants, when it is necessary to record the meeting It is very inconvenient, and although the existing technology has a conference stool with a foldable writing board, because the existing technology generally has the problem that the unfolding angle cannot be controlled, if the unfolding angle is too large, it is easy to hurt people and affect the use, and it can be opened or folded. Improper use causes the clipping of the tablet or friction between the mechanisms of the tablet, which affects the use, so the tablet cannot be well used in production and life. Contents o...

AI Technical Summary

Problems solved by technology

[0002] In some large-scale conferences and academic seminars, due to the limited space, generally only one stool is provided for the participants, especially the conference stool. Since there is no conventional table equipment, for the participants, when it is necessary to record the meeting It is very inconvenient, and although the existing technology has a conference stool with a foldable writi

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