Fastening means of return air grille

Abstract

The present invention provides a fastening means of air grille including a grid face, a filtering device, a stationary frame and door latches, in which said grid face is hinged to the stationary frame with one side, and the opposite side of the grid face is fastened on the stationary frame with the door latches; wherein said door latches molded of plastic is located on the grid face in movable connection with a catching hook at the middle portion; a pushing portion is built upon the upside of the door latch, and a L-shaped catching shoe on the lower portion, above the L-shaped catching shoe the catching hook is built up for holding the grid face on, and an open slot constructed of the low leg of the L-shaped shoe and the bottom of said pushing portion is used to catch on the stationary frame. When opening the grid face, just need to push the door latches respectively to outward so as to slide off from the stationary frame, then the grid face is opened wholly; in this case, locking or opening of the grid face to install or remove filter becomes easy and convenient.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a fastening means of return air grille, and more particularly to a fastening means of grid face of air grille. [0003] 2. Description of Prior Art [0004] So far, in some homes or offices, on the ceilings and walls there are air ventilation facilities set up for making rooms get circulated fresh air, further keeping the air cleaner and fresher in the rooms, therein between the grid face and the stationary frame a filter is located. During a certain long time of use, said filtering device should be taken out for cleaning or replacing, but in removing filter, firstly the user should open the grid face, generally which is hinged to the stationary frame on the top side, the opposite side is fastened on the stationary frame with a pair of metal fixed lever, due to poor elasticity of metal, so as opening grid face an extra force has to be needed to release the metal lever from the stationary...

AI Technical Summary

Benefits of technology

[0005] It is therefore a main object of the present invention to provide a fastening means of grid face of air grille that is operated easily with simpler structure and easier and more convenient operation.

[0015] By means of the above-mentioned technique project, because the door latch applied is a sole piece of part molded of plastic, and is located on the grid face with the middle portion in slide motion, its upper portion is formed a pushing portion, and the low portion forms a L-shaped catching shoe, and a catching hook is built on the middle portion above the catching shoe for holding the grid face on, and an open slot constructed of the low leg of the L-shaped shoe and the bottom of said pushing portion is used to catch on the stationary frame; so the fastening way of locating the grid face on the stationary frame is horizontal launching, by means of the material features of the plastic door latch, such as good elasticity feature, locking or releasing operation of grid face is much easier with less force needed; when opening the grid face, just need to push the door latch respectively to outward so as to slide off from the stationary frame, the grid face is opened wholly, in this case, locking or opening the grid face becomes easy and convenient.

Problems solved by technology

During a certain long time of use, said filtering device should be taken out for cleaning or replacing, but in removing filter, firstly the user should open the grid face, generally which is hinged to the stationary frame on the top side, the opposite side is fastened on the stationary frame with a pair of metal fixed lever, due to poor elasticity of metal, so as opening grid face an extra force has to be needed to release the metal lever from the stationary frame, therefore, the finger feels uncomfortable and exerts more force.

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