The main choice of the purifier brushes is their quality, but few people think that the modern car uses several types of this simple, at first sight, the subject.
Mary Anderson's brush had no leashes and was a strip of rubber attached to a single cable. It is unnecessary to add that the actuator of this mechanism was manual.
It was only by 1923 that an improved structure with leashes and electric motor as a drive was finalized.
Basic requirements for wiper brushes
The brush of the purifier, soak on the leash powered by the electric motor, clears the surface of the glass, moving in both directions-the rubber "blade" front, then the rear edge of the rubber "blade". "The blade" is placed in a metal or plastic spring-loaded box that allows the rubber scraper to fit tight against the glass. In order to provide elasticity, the metal frame makes composite, integrated into a single unit at the expense of several mobile connections. The plastic frame retains the elasticity of the material properties.
At first glance it may seem that the brush is so primitive that it is impossible to improve it somehow. However, developers are constantly changing the design to improve performance, as modern toothbrushes are subject to very high requirements.
First of all, the brush must clean well. The question of optimal design has long been decided, and it is only to be used for the production of a scraper of high-quality materials.
Rezina must be resistant to chemically aggressive environment and retain flexibility in temperature and humidity conditions. In addition, it must have a reduced capacity for abrasion, so the glass, which seems to us perfectly level, is actually, if its surface is examined under a microscope, it resemblers sandpaper. The age of the glass also affects its smoothness, since the surface is over time covered by deposits of mineral substances (salts, soot and soot), which also contributes to the increase of abrasiveness.
In general, it is assumed that a "good" brush should withstand 7-8 million "whammses", maintaining performance characteristics.
Their decline can be judged by the deterioration of the survey-the rubble starts to leave the stripes on the glass, then the stripes merge into a continuous ash. All these are signs of wear and tear, and the question is how early they are. It is possible to judge the quality of the brushes for the rapid failure of the rubber blades.
Shchetchs must work quietly, especially as long as they are new. If a new brush with a friction of glass issues a creak, it shows that the blade is made of low quality rubber.
The edge of the blade on one side of the movement is bent to the opposite direction, then to the end point, straighway and bends to the other side. The twisted blade gathers water and dirt, and moves silently, slipping through the wet surface of the glass. If the edge of the blade is too rigid and does not bend at all or to bend a little, the brush will inevitably creak.
In addition to the application of qualitative rubber in the correct position of the blade on the glass plays the role of well calculated design of the carrying frame. Sometimes the brushes, in order to be insured, are equipped with a spoiler with the blade on the glass as the speed of the car increases as the air flow tends to tear them away from the glass.
What is the difference between "expensive" and "cheap" toothbrushes
The down-sized models that can be found, for example, in the supermarket division of the supermarket are usually the simplest. It is a "carcass" brush with a composite metal bearing frame, although in recent years there are also inexpensive uncardboard toothbrushes of elastic plastic. The "expensive" brushes are characterized by a design frame that provides stable but low performance. Of course, rubber blades are of little quality, because they are the most complex elements. These brushes can be cleaned, but they always wear them out fast. In addition, only common types of fastenings are different from expensive, quality brushes. For example, expensive SWF chips cost about $40 per each model is available in 5-6 execution, so they can be picked up for a car of any brand. SWF is placed on a number of cars as "original" and may have attributes-for example, in Volkswagen cars it is a wear sensor that changes color during the operation. In other words, the producers of "expensive" brushes have an extensive system in their arsenal for all of their lives.
List of seasonas and by design
wiper carcasses
The most traditional type of brushes is used as a staff member on cars of economy class. The rubber blade is reinforced in the composite frame.
Carcassettes are divided into: summer (traditional frame with external guides), all-season (with guides inside), winter (with normal frame, hidden inside a rubber skin).
Potato carcasses.
In fact, the same cardboard brushes, but with a wide spoiler on one (driving) or both. Spoiler prevents the tear of the glass from being off the top of the glass and provides a good pressure force when moving at high speed.
Wiper glass brushes
The fiberglass wiper blades are different from the usual plastic elastic girders. In order to increase the elasticity and the added rigidity of the body, the rubber blade was reinforced with a steel curved, flexible bar-spring. If the rubber blade is of high quality, this brush is more durable because there are no mobile metal components prone to corrosion. These toothbrushes have been increasingly used as staff in recent years.
Wiper wiper hybrid
The wiper hybrid brush is a variety of shameless brushes developed by the Japanese company Denso (Japan). The cashier's frame is hidden inside a plastic shell that, in fact, serves as a spoiler. Such brushes allow for the replacement of a rubber blade, which increases their useful life. A frame hidden in a plastic case is less prone to corrosion.
