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The hatch has several functional assignments: first, it improves the illumination of the passenger compartment and the circulation of the air. If the hatch is fitted with a lifting mechanism, it slightly improves the aerodynamics of the vehicle in the raised condition. Due to the tilt of the hatch covers at high speeds, the airflow shall be lifted from the roof of the vehicle, thereby reducing the curing behind the rear window.
Varieties and device
There are several varieties of carrots. They differ in the type of materials used in their production. So, the lukewes are tough, made of glass with metal elements, and soft-sliding, made of watertight matter. Within these types, there are their gradations. Rigid hatches are subdivided into sliding and hoisting. Also by type of drive, manual or equipped electronic mechanism.
If the hatch is manufactured and installed at the plant, it is the most common rigid and sliding sheet made of glass and iron. In service workshops, the budget variant is more often installed-a glass hatch with sliding or lifting mechanism. However, there is a back side in the installation of the hatch: first, it weakly weakly the stiffness of the body. Second, an incorrectly completed installation can have serious consequences: for example, the body geometry and the deformation of the door openings and the side racks can be changed.
A few words about glass hatches. Now the manufacturers use two types of glass-rifline (or raster) and smooth. The first has a special population in its design, made in the form of a micropyramid. Their purpose is to scatter sunlight. Minus of hatchways of this type-a rifline glass are hard to clean up because the dirt is spilling over unevenness.
Hatches made of a smooth glass are complemented by a protective thin film that prevents ultra-violet radiation from entering the cabin. Minus of this type-such film loses its reflective ability over time.
If the hatch is made of ordinary glass, which is used in the manufacture of the vehicle windows, it shall be fitted with a cartridge door which can be moved to the side if necessary.
So, about the advantages and disadvantages of different types of people. Sliding rigid hatch is compatible with the extra boot on the roof. It also has a number of inconveniations: it needs to be further compacted to achieve a tightness, and, as discussed above, it weaks the structure of the body.
In the case of a lifting hatch, it is quite simple to manufacture and install the part. If the front of it is raised, it performs the air-amusing function, and if the rear is air-off. However, it excludes the possibility of installing an additional trunk on the roof of the vehicle.
A soft cloth manhole is convenient that it is capable of opening the largest part of the roof. And his main obvious disadvantage is not tightness. This type of luke (made from the tarpaulin) is most likely to be met on the jeeps and SUVs with the cardboard body.
It's worth mentioning two different kinds of people. The first is panoramic. They differ in what they have in a dual structure: two panes are arranged sequentially, thus providing a panoramic view. The front window is equipped with an electric motor that is attached to its back edge. Then this part of the glass is shifted on a telescopic frame back, parallel to the roof of the car. The second glass pane can either work on the same principle or stay still. The third element of the structure may still be placed between two "doors": a glass or plastic frozen box. Such openings may be equipped not only with the usual rigid but also glass panoramic roof.
In the case of integrated hatches, they have the following design. When the hatch opens, it goes into the ceiling, and the closed state is one whole with the roof. These hatches shall also be fitted with an electric motor, and in order to activate it, click the switch on the dashboard.