Removable ETC bracket, installed behind the screen, optimizing antenna angle

Now, you can buy the new generation of cardless ETC on the market. Surely, some people, like me, want to stick it somewhere out of sight to maintain a tidy car interior, such as behind that large smart screen. I designed this bracket because I encountered some problems during use. The smart screens of new energy vehicles mostly have an inclination; mine is 18 degrees. If the ETC device is directly attached to the back of the screen, the OBU antenna on the ETC will point towards the center console, severely affecting the speed and accuracy of recognition at the expressway ETC toll gates. I made this bracket to correct that negative 18 degrees and also have the device face the windshield at a 25-degree angle. In practice, even with a metal Weigu film on the front windshield, the ETC response speed is significantly improved, and I no longer experience ETC reading errors or failures.

The model is a simple plug-in structure. This has the advantage that you can remove the device if necessary and have it read at the toll booth by a staff member – quite useful for cardless ETC systems. Also, the power of ETC systems varies across China; in extreme cases, you can easily detach the ETC, whether placing it further forward on the center console or extending it outside the window.

When you print this model, you’ll find that it doesn’t perfectly fit, not reaching the bottom. This is normal because my design allows for a slight interference fit. You will notice a change in the tightness of 3D-printed parts over time; I've made this slightly tighter. You can adjust the tightness based on your preference when inserting it.

My remote screen has some reflection, so I sprayed the device with matte paint