Two-dimensional displacement-adjustable overturning mechanism

Abstract

The invention relates to the field of screen pre-maintenance, in particular to a two-dimensional displacement adjustable overturning mechanism. The two-dimensional displacement adjustable overturning mechanism comprises an overturning piece, a fixing piece mounted on a box body, and a long connecting rod and a short connecting rod of which one ends are connected with the fixing piece, and the other ends are connected with the overturning piece, as well as an adjusting structure mounted on a screen unit, wherein insertion parts protruding downwards are arranged on a lower side surface of the adjusting structure; a vertical adjusting hole, a horizontal adjusting hole and insertion holes communicated with the horizontal adjusting hole are formed in the overturning piece; the insertion parts penetrate through the insertion holes and are mounted on the overturning piece through an anti-fall off component; a vertical adjusting piece of which one end is propped against the lower side surface of the adjusting structure is mounted on the vertical adjusting hole; a horizontal adjusting piece of which one end can be propped against the insertion parts is mounted on the horizontal adjusting hole. According to the invention, the adjusting structure is added on the conventional overturning mechanism, so that connection and fixation of the screen unit and the box body as well as moving-out and reset of the screen unit can be completed, horizontal and vertical displacement adjustment of the screen unit relative to the box body can be completed, and the adjusting manner is simple, convenient and reliable.

Description

technical field [0001] The invention relates to the field of screen front maintenance, and more particularly relates to a flipping mechanism capable of adjusting displacement in two dimensions. Background technique [0002] When the projection-type image display front maintenance video wall system needs to perform front maintenance on the rear projection box, it is generally necessary to move the screen unit out of the box and reset the screen unit after maintenance. In order to realize this process, it is necessary to solve the problem of the connection and fixation of the screen unit and the cabinet, and the adjustment of the screen unit relative to the cabinet after being reset, so as to ensure that the joints between the screen units in the splicing wall system are uniform. [0003] The existing screen flipping mechanism for front maintenance, such as Chinese patent application: 201210470959.2, is a front maintenance flip mechanism; it includes a box, a screen assembly, ...

AI Technical Summary

Problems solved by technology

[0004] (1) The hinge of the four-bar mechanism should take into account both the fixation and the movement functions, resulting in unreliable fixation of the hinge of the four-bar mechanism, prone to radial inclination and offset; because it is prone to radial inclination and offset, it is easy to get stuck when adjusting the screw of the mechanism , there is a situation where the adjustment does not work

[0005] (2) Secondly, due to the long transmission chain, the turning mechanism takes into account both the fixing and adjustment functions, resulting in low adjustment efficiency, and even stuck and adjustment failures

[0006] (3) In order to enable the screen to adjust the up, down, left, and right positions of the screen under the action of the adjustment mechanism, it is necessary that the outer diameter of the collar is 1.5-2.5mm smaller than the mounting hole on the hinge rotating plate, and it can be moved along the axis of the mounting hole. Sliding 1.5-2.5mm, this structure requires high dimensional accuracy, and because there is a gap on the collar, the hinge plate is easy to slide when it is not working, causing the screen to flip down, affecting normal use

Moreover, due to the existence of the reserved space of these holes, the movement track of the flipping mechanism is destroyed, so that the screen sinks during the screen flipping movement, resulting in the fact that the actual screen cannot be opened and reset.

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