Support for tablet in the car

In my car there is a niche left, which was where the old cassette. Another niche, is the cd and dvd player.
As we do not use anymore the tape, it was an empty hole, I wanted to install a harness support for tablet, very useful when using the browser.
For that, I made in two stages. The first was to make a box that is inside the niche.
For its size being larger than the printer can run, split into two parts. Then did the support for the tablet, which is embedded in this box.
Also divide this support in two parts. A bottom which will be installed in the box was in the niche and the other top, which is fitted onto the lower part. Designed a plug that is behind the piece, as seen in pictures.
Thus, just remove the top bracket and place the tablet. Then fits the top of the bracket and has urged the tablet, with a frame around it.