Why can't the back door glass fall to the bottom？
The main reasons for the rear door glass not falling to the bottom include design limitations, safety concerns and mechanical failure.
Design limitations:
The internal structure and shape of the door make it impossible to put down the whole window glass, especially the rear door has a curve under the rear door, which is because the rear wheel arch occupies the space of the rear door, resulting in the lower half of the rear door panel of some models to narrow, thus unable to provide enough space for the glass.
Model design compromises, such as the C-pillar part of the door design is not a straight line but a curve, resulting in the door wide at the top and narrow at the bottom, there is not enough space to accommodate the glass, and only a part of the car is left exposed.
Safety considerations:
The window can not be completely lowered to protect the safety of passengers to a certain extent, especially to prevent children inside the car from climbing out or sticking their heads out of the window.
Some models are designed for safety reasons to prevent children from sticking their heads or hands out of the window unattended and posing a danger.
Mechanical failure:
Mechanical problems such as a deformed or damaged mud trough of the glass, loose screws holding the lifter, damaged glass lifter, or misalignment of the rail mounting position may also prevent the rear window glass from lowering completely.
In summary, the rear door glass can not fall to the end for a variety of reasons, including design compromises and safety considerations, and may also involve the failure of mechanical components. For design limitations and safety considerations, this is the tradeoff when the vehicle is designed; For mechanical failures, professional maintenance services are needed to solve them.
The reason why the rear door glass does not fall to the end is that the rear wheel arch of the car occupies the space of the back door. For some models, the shape of the wheel arch will make the lower half of the rear door panel have a significant narrowing. When the rear window glass falls, the lower half of the door panel does not have enough space to accommodate the glass, which will cause the window glass to fall to the end.
For safety reasons, children can only sit in the back row, can not sit in the front row, even if there is a safety seat or adult supervision, but because the child's behavior is completely out of their control, in order to avoid accidents, the rear window can not be completely lowered, you can protect the safety of children in the back row to a certain extent.
Many cars will have triangular Windows in the C-pillar position, and the rear doors and Windows are full glass. In this way, from the modeling point of view, the integrity is stronger and more beautiful, but the area of the rear window glass is larger, and it will be more troublesome to completely close the door. Components such as door locks need to be arranged in the lower part of the rear door panel, which will make the empty room more stretch.
Reasons for the failure of the rear window glass:
1. The mud trough of the glass is deformed or damaged, resulting in the failure of the rear window glass of the car;
Solution: It is recommended that the owner go to the 4S shop or repair shop to detect or repair the glass mud tank, the owner can not solve this problem or easily make the car produce new problems, causing unnecessary losses;
2, the screw fixing the elevator is loose, resulting in the failure of the rear window glass;
Solution: the owner should tighten the screw fixed by the elevator in time. If the owner can not complete it personally, he can go to the 4S shop or the auto repair shop for repair;
3, the glass regulator was damaged, resulting in the failure of the rear window glass;
Solution: It is recommended that the owner go to the 4S shop or the auto repair shop in time for the inspection of the glass elevator, if the damage is more serious, it should be replaced in time;
4, there are some deviations in the installation position of the guide rail, resulting in the failure of the rear window glass;
Solution: It is recommended that the owner go to the 4S shop or repair shop for the detection or maintenance of the rail installation position, the owner can not solve this problem or easily cause the car to produce new problems, causing unnecessary losses.
Types of automotive glass:
1, laminated glass: laminated glass is composed of two or more layers of glass with one or several layers of transparent bonding materials bonded glass products. After the impact, the brittle glass is broken, but because it is combined with the elastic PVB, the laminated glass has high penetration resistance and can still maintain visibility;
2, tempered glass: tempered glass is divided into physical tempered and chemical tempered, usually referred to as tempered glass refers to physical tempered. Tempered glass impact strength is the same thickness of ordinary glass 5 to 8 times, 5 mm thick tempered glass with 227 grams of steel ball impact, steel ball from 2 to 3 meters height falling glass does not break, the same thickness of glass at 0.4 meters will be broken.
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