Heated wipers

Those who drove in the winter by car are well acquainted with the fact that snow and ice stick to car brushes or wipers in winter. And if it is snowing mixed with rain on the street, then the wipers generally get stuck and practically do not clean the glass.
In addition, the brushes are constantly frozen to the glass, and if you forget to scrape them off the ice, then when you start, the cleaning gum can be torn off.
Of course, you can deal with this manually all the time, but you must admit that this is not convenient. And to go to the snowfall and constantly stop during the ride is not only not convenient, but also a very time-consuming affair.
There is a solution - buy heated brushes, which will cost a pretty penny. And you can do as I do and make the heated brushes yourself.

Dismantling the janitor

I bought the cheapest frameless Chinese wipers. Which I will understand in a few minutes.
We snap off the latches and remove the top cover.
Next, remove all the rubber bands and metal inserts.
Janitor disassembled into parts.

Production of a heating element

I made a heating element from a nichrome spiral.
The size of the nichrome thread I will pick up not by length, but by its resistance.
I will cut a piece with a resistance of 7.5 ohms. You can take in the range of 6-10 ohms. Power and current, I think, you yourself will count without problems. Here's a piece of wound wire I did.
Then it must be dissolved in one core without turns. It’s just impossible to pull and stretch it to the sides, as there will remain undulation.
We dress the spiral on an iron pin or screwdriver and pull. Only then will you have an even nichrome wire.

Making a heated janitor

We take a nichrome wire and make a coil in the gum of the janitor. We drown a nichrome screwdriver into the recesses of the gum. We got one turn of nichrome directly on the elastic.
Next, we bring the wire into the case and make a coil in the wiper housing itself and put on an elastic band.
As a result, the entire heating element will consist of two turns: one on an elastic band, the second in the wiper body.
We cut off the excess pieces of wire, but before that we measure the resistance. Below 6 Ohms it does not fall, which means it is normal.
At the ends we put on thermal insulation and blow.
We check. Connect the car charger and measure the heating time.
Time turned out less than a minute - this is normal.
Close the top pad. We dress the terminals and settle in. The result is two heated brushes.

Wiring diagram

In the circuit, the wipers are connected in parallel, through a relay. Plus taken from the battery.
I assembled the circuit previously on the table to try it out.

Installing brushes on a car

This is what the wipers mounted on the car look like. Wires do not fray - everything is fine.
Relays in the electrics block.
Button in the car. I have a right-hand drive car, so do not be alarmed - this is not for the passenger.

Testing heated brushes in real conditions

That's how it cleans a frozen janitor.
After I turned on the heating and after 3-5 minutes a completely different result.
So, friends who especially love to ride in winter do it safely and drive comfortably.

Watch the video of the manufacture and testing of heated wipers

Watch the video: Walmart Heated Wiper Blades Install and Review (November 2024).