It’s been in our lives for a century. carsFor some of us today, it’s just a vehicle we use to get from one place to another. Some of us value the cars we own much more, making them an integral part of our lives. But even the toughest coachman doesn’t know if don’t think about it there is a problem. In this content you have “butterfly glassWe will talk about.

Butterfly glass is on the front door of some cars, the back door of others, and some on both doors motionless glasses. Although the side windows usually have a movable mechanism, the butterfly glass attracts attention with its fixed structure. Because it just stands there and it looks like has no function. So why this glass? Who invented it? Let’s look together at the answers to these questions.

First of all, why are these little glasses called butterfly glasses?

By the way, you’ll get the answer to this question later in the article, but just in case you’re wondering, we wanted to open a separate topic on this. These little windows in car doors, when they first appeared like a butterfly wing Because they could open outwards, they became known as butterfly windows. Although these windows cannot be opened today, they are still called butterfly windows.

Butterfly glass, which came into use in the 1930s, became the standard in the 1950s!

Butterfly glass was also used in “primitive” cars introduced in the 1930s. General engines The butterfly glass, which was brought to the sector by the company, was very different in those years than it is now. Designed with a special locking mechanism, the windows open outwards, albeit at a slight angle, and it made him breathe. Of course, the cars released in those years also had windows that could normally be opened, but because of the extra ventilation option, the butterfly glass had been preferred.

Butterfly glass, now stuck, was used in those years as follows:

The photo above to open in the structure shows the butterfly glass. People actively use this window in years when there is no air conditioning and extra airflow they were providing. Today there are air conditioners and no butterfly windows need to be opened. So why wasn’t it completely removed?

Now that there are air conditioners; Why do you need a butterfly glass?

As you can see in the image above, the rear doors are designed to taper into the body section due to the position of the rear wheels of the cars. on the top the glass part is wide, the body part is narrow It is not possible to open the window completely. This is where the butterfly glass comes in.

The red line in the picture shows the alignment of the jamb separating the butterfly glass from the openable glass on the body of the door. The green serrated part of the glass to be opened, after opening the space in the door shows. The orange knurled part shows the area the door would cover if the butterfly glass could be opened, or rather how it would spill out. In other words, if these little compartments in the doors weren’t separated, of course we wouldn’t be able to open the windows.

So why not just make the opening part out of glass and leave the other part whole with the body? The answer to this is actually quite simple… Being able to see their surroundings is an extremely important issue for drivers. Creating a butterfly glass instead of a closed area in combination with the body helps drivers Lake a wide field of view makes it available.

What’s in a car door?

The image above shows the inside of the back door of a car. In this interior there is a rail that holds the rail system allowing the glass to open evenly. mechanism there is. This mechanism controls the up and down movement of the glass. If the butterfly glass can also be opened, the mechanism opens this window completely. That means a big problem. Because glass is not flexible and will break if forced. In order not to break the glass, it must be opened halfway. Although we see semi-opening rear windows on some models, many brands have no preference for this. Besides; also on windscreens same situation Let’s say it is. The glass, which does not fit into the door housing, is used in parts. We call the small part a butterfly glass…