Why is the rear window glass divided into two parts?

In fact, to put it simply: the triangular window of the car will have a variety of combinations in terms of position, switch, and quantity! And the key to understanding the reason is to grasp one principle:

The windows are transparent! Transparent! Transparent!

Therefore, the purpose of the appearance of the triangular window is also unified: to ensure the driver's vision! In order to ensure the driver's visibility!

In order to ensure the driver's visibility!

In order to adapt to the changing shape of the car, the position of the triangular window and the number of opening methods will naturally vary. Some cars have a straight C-pillar, or the doors can pull the windows in, or they don't care about this at all, and the car may not have a rear triangle window.

Some cars need to add a rear triangular window to the C-pillar, and the doors are not that long, so the rear triangular window may be on the body. Some cars have doors that are too long, and if you make a full window, the window will not be able to be lowered completely, so the rear triangle window may be on the door. In other cars, although the door design is very long, it also needs more glass to optimize the view, so there are two rear triangular windows.

Of course, windows sometimes need to be opened to breathe: even if they are small!

Speaking of which, the triangular window is actually the product of ensuring the car's vision and window function, and several designs that change under this principle. <>

<> because the shape of the rear door is very different from the front door, which determines that there is limited space inside the rear door to accommodate the window glass, designing the rear door window glass in two pieces is a compromise solution to achieve the rear door window can be raised and lowered.

On the same car, the shape of the front and rear doors will be very different, the front door body (except for the window) is a trapezoidal shape that is close to a rectangle, while the rear door has to make room for the rear wheel cover, so its door body shape is a very oblique one"waist"（"waist"It may be a curve, or it may be a straight line).

This difference in shape directly leads to the difference in the design of the front and rear doors and windows.

What are car windows used for? It is nothing more than two points: 1, light transmission 2, ventilation.

Needless to say, glass windows are naturally transparent.

What about ventilation? Of course, the windows must be opened to ventilate, so the windows should be designed to be liftable functionally. So the question is, what are the requirements for the shape and structure of the door for the liftable window?

To put it simply, there are two points:1There is a mechanical mechanism (motor, guide rail) for arranging lifting in the doorThere is space in the door to accommodate the glass windows and brackets that are fully lowered.

For the front door, there are no problems, a single piece of glass is designed to meet the requirements perfectly.

To sum up, rear door windows often have a design that is divided into two pieces, one of which is fixed and the other can be raised, which is a compromise solution because of the special shape of the rear door.

As for the mentioned rear door window that cannot be completely lowered to the bottom, I personally think that it is also because of the shape limitation of the rear door, there is not enough space for the glass to be fully retracted into the door, so it is designed this way.

The role of the front triangular window]:

Avoiding side blind spots caused by excessive tilt of the front windshield increases the driver's visibility. At the same time, the front door triangular window can be matched with the requirements of the glass regulator rail, and the guide rail needs to be parallel to the glass rail of the B-pillar.

The role of the rear triangular window]:

1. Installed on the rear door: the installation method of sealing strip on the glass is generally adopted, mainly from the perspective of aesthetic design, which can make the vehicle look more beautiful; In addition, it can also appropriately reduce the manufacturing difficulty of the rear movable window, and the size of the glass is divided into a part by the triangular window, so that the glass will be more stable when it is lifted.

Many cars are short-axle versions in foreign countries, and they will become extended versions when they enter our national market, so in order to obtain more space in the rear row and the so-called "transparent vision of the triangular window", some models will cancel the original body pillar of the rear triangular window in response to market demand, and integrate the triangular window into the door to increase the door width.

2. Installed on the C-pillar: This kind of rear fixed triangular window mainly plays a beautiful role, but also increases the lighting of the rear seat and meets the needs of the occupants' riding vision.

Moreover, this small triangular window, because of the high difficulty of matching, is actually more expensive than the large glass on the door. <>

The reason why the rear window glass of the car is designed into two parts is mainly from the perspective of aesthetic design, which can make the whole vehicle look more beautiful; In addition, the manufacturing difficulty of the rear movable window can be appropriately reduced, and the size of the glass is divided by the triangular window, so that the glass will be more stable when lifting.

Windows are an important part of the overall body and are designed to meet the needs of drivers and passengers for lighting, ventilation and visual avoidance. Depending on where the windows are installed, there are front and rear windows, side windows, and doors and windows. The shape of the window and the quality of the sensitive hole have a great impact on the driver's vision, the passenger's comfort, aesthetics and aerodynamics.

The window structure is usually closed with curved surfaces, and the body window frame is connected to the window glass by rubber sealing strips. Seals act as seals and cushions to prevent damage to the windshield when the window frame is deformed due to stresses on the body.

The front and rear windows of automobiles are usually made of curved glass that is good for vision and aesthetics, which is embedded in the window frame by rubber sealing strips or pasted to the window frame with a special adhesive. To facilitate natural ventilation, the side windows of a car can often be moved up and down or back and forth. Between the glass and the rails, there is a sealing groove made of wool or flocked rubber.

Some of the side windows of the car also feature cylindrical glass, which favors the layout of the car.

The general automotive glass is made of quartz glass, of which the main component of quartz is more than 70% in Nashen, and the rest is composed of sodium oxide, calcium oxide, magnesium, etc. , which is made by a floating process. During the manufacturing process, when the material is heated to 1500 meters, it melts.

The solution passes through a refining zone of about 1300 square meters and is poured into a suspension tank. It is cooled down to around 600. At this stage, a parallel planar body of excellent quality is formed.

After passing through the cooling zone, the glass is shaped and cut to a specific size. The glass is then further processed into tempered glass or laminated glass (LSG).

Millions of car purchase subsidies.

After driving the car for so many years, I wonder if you have paid attention to this thing in the car?

Triangle window! Gu Huaiqin's name suggests, a triangular or triangular window. I believe that many people will often ignore this device, and its role may not have been seriously thought about.

This independent triangular window is not separated, and it must have its own unique story.

What does a triangular window do?

The triangular window installed in the front door is to avoid excessive tilting of the front windshield and the side blind spots caused by the A-pillar, and increase the driver's visibility. At the same time, the front door triangular window can be matched with the requirements of the glass regulator rail, and the guide rail needs to be parallel to the glass rail of the B-pillar.

Some people may ask, so why don't some models have a front triangular window? This may be due to the structure and wiring harness in the door, or it may be due to the high cost of solving the problem of rubbing and vibration required to lift the whole piece of glass.

So, what is the use of the rear door triangular window? There are two kinds of rear door triangular windows, one is installed on the rear door, and the installation form of sealing strip sleeve on the glass is adopted, which is mainly considered from the aesthetic point of view, which can make the overall shape more beautiful. In addition, this can also reduce the difficulty of manufacturing the rear movable window, and the triangular window can separate a part of the glass, which can also make the glass rise and fall more smoothly.

Some doors are so long that if you make a whole window, you won't be able to lower it.

The other is the rear fixed triangular window installed on the C-pillar, which can play an aesthetic role, and can also play a role in rear lighting and meet the vision needs of the occupants.

The triangular window of many models cannot be opened, but some can, since it is a window, it is also good to open it for ventilation!

I conclude:Early triangular windows were more for ventilation, but now they are more for good visibility and smooth glass lifting. Although the purpose is different, the design of the triangular window is also the crystallization of people's wisdom.

Keep an eye out for any small components in your car, they may all hide secrets you don't know!