What Does the Butterfly Glass in Cars Do?

It has been in our lives for a century. carsFor some of us today, it is 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 hardest coachman does not know or not thinking about there is an issue. In this content you “butterfly glassWe’ll talk about.

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

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

As a matter of fact, you will get the answer to this question later in the article, but in case you are wondering, we wanted to open a separate topic on this subject. These little windows in car doors, when they first appeared like a butterfly wing Since they could open outwards, they became known as butterfly windows. Although these windows cannot be opened today, they are still referred to as butterfly windows.

Butterfly glass, which began to be used in the 1930s, became the standard in the 1950s!

Butterfly glass was also used in “primitive” cars introduced in the 1930s. General Motors Butterfly glass, which was brought to the sector by our 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 allowed him to breathe. Of course, the cars released in those years also had windows that open normally, but the butterfly glass had become the reason for preference due to the extra ventilation possibility.

Butterfly glass, which is now fixed, was used as follows in those years:

The photo above openable 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. Nowadays, there are air conditioners and there is no need for openable butterfly windows. So why wasn’t it removed completely?

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 narrow in the body part due to the position of the rear wheels of the cars. at the top the glass part is wide, the body part is narrow It will not be possible to open the window completely. This is where the butterfly glass comes into play.

The red line in the image shows the alignment of the post separating the butterfly glass from the openable glass on the body of the door. The green jagged part of the openable glass, after opening the space inside the door is showing. The orange jagged part shows the area that the door would cover if the butterfly glass could be opened, or rather how it would overflow outside. In other words, if these small compartments in the doors were not separated, naturally we would not be able to open the windows.

So why don’t they just make the openable part 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 combined with the body allows drivers to more a wide field of view makes it available.

What’s inside a car door?

In the image above, you see the inside of a car’s rear door. In this interior, there is a rail that holds the rail system that allows the glass to open evenly. mechanism there is. This mechanism governs the up and down movement of the glass. If the butterfly glass is also openable, 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 half-opening rear windows on some models, many brands do not prefer such a thing. By the way; also on windshields same situation Let’s say it is. The glass, which cannot be fit into the door body, is used in pieces. We call the small part a butterfly glass…