Driving out on the weekend, it suddenly rained on the highway, the rain was not too big at that time, and the wipers were started but found that the rain on the glass could not be cleaned, which seriously affected the driving vision.

Wipers are very important to cars, and if you drive without a wiper on a rainy day, it's like walking with glasses on, and it's just as useful as the tires and lights on your car.

Wiper is an important part of the car, its role is to remove the windshield on the view of the rain, snow or dust, wiper is an inconspicuous part of the car, but it is indispensable, in the rain and snow it keeps swaying, to ensure driving safety.

The first automobile was born at the end of the 19th century, and it was not until the beginning of the 20th century that the wipers for cars were invented.

The earliest cars were relatively slow, only a simple carport, and there was no windshield, maybe at that time when it rained to drive, they wore raincoats, and the carport could also block some of the rain.

With the development of automobiles, the speed of cars has become faster, and the windshield is installed to protect the car from the wind, but when it rains, the rain on the windshield will block the view, and it is said that at that time, people made a mixture of onions and carrots and applied it to the glass, which obviously had no effect.

In the early 1900s, an American lady who was driving on a rainy day and injured not only a pedestrian but also herself, in order to avoid such accidents, she was inspired by the rain and snow on the windshield with the tram driver's hand, and invented a manual metal rod rubber strip wiper.

This kind of wiper has to be shaken while driving, which is tiring and unsafe, and later a company invented an automatic wiper driven by a motor, and after 1920, the wiper became the basic configuration of all cars.

Common wiper designs are flat form, cross type, single arm type, folio type, generally commonly used flat form, folio type will leave a triangle on the glass, and those with obsessive-compulsive disorder definitely don't like it.

A long and a short is also a common way to match, the long wiper is responsible for the driver's side, the short wiper is responsible for the co-pilot's side, as well as the bone-based wiper and the boneless wiper, the boneless wiper is only one support point, is a long strip with a smooth arc, and the bone-based wiper is evenly distributed by multiple support points (skeleton structure) to support the wiper.

The wiper wiper part is rubber, which will cause aging and hardening when exposed for a long time, which will naturally affect the wiping effect, and the bone-wiper wiper is composed of rubber strips, metal frames, deflectors, high-strength stainless steel sheets, and buckles.

Whether the wiper can scrape the rainwater on the glass is an important indicator of its work, and it is usually necessary to use glass water to assist the wiper to clean the windshield, and form a certain pressure by rotating the motor, and pump out the glass water in the washing pot and spray it on the glass.

The wiper is provided with kinetic energy through the motor, the motor worm is combined with the gear, the gear is driven by the worm, the gear belt rocker arm rotates, and the rocker arm makes the pull rod reciprocate, driving the wiper blades to swing left and right to clean the windshield.

Its speed control is that the permanent magnet motor is regulated by changing the number of windings in series of positive and negative brushes, and the resistor located on the control switch is connected with the armature winding of the motor to control the speed of the motor.

Whether it is a bone-based wiper or a boneless wiper, there are rubber wiper blades, let's take a look at how the wiper blades are made,

First, the natural rubber is poured into the mixing tank and cracked into fine particles, and black carbon powder is added to the rubber to increase its wear resistance, and the addition of carbon powder will make the wipers turn black.

After a few hours, the mixed rubber is cut and then put into the machine to heat, and the rubber sheet is heated and sent to the extruder, where it is combined with the artificial rubber sheet, and the rubber is extruded through the mold to form a continuous rubber belt.

The rubber belt is cooled in the water before it can be cut, and it is cut in half to form two wiper blades with sharp edges.

Spraying graphite on the wiper blades can reduce the friction, and then put it in the machine to dry, the rubber is very smooth and difficult to be grabbed, so insert each wiper blade into the assembly machine by hand, there is an opening in the center of the wiper blade, the machine will insert the carbon steel metal sheet from the opening, its function is to let the wiper blade exert pressure on the glass and rebound into the original state, the pneumatic pressure exerted by the machine will push the metal sheet into the long strip of wiper blades.

Let's take a look at how the bone-based wiper bracket is made, the carbon steel coil is fed into the machine, and the bracket is stamped and bent to form a bracket that allows the windshield wiper blades to be connected to the wiper arm, allowing them to work on the curved windshield.

These brackets are sent into the pool for pickling, and then painted and baked to ensure that the brackets are not corroded, and the wiper blades are assembled with the brackets to form a complete set of wipers.

Regarding the aging problem, generally speaking, it needs to be replaced for about a year, and there is no standard for this, mainly depending on the use and quality of the wipers.

I don't know if you noticed it, almost all sedans don't have rear wipers, why is that?

In fact, there is a certain reason why the sedan does not install rear wipers, and the current car adopts a streamlined design in order to reduce wind resistance, which will make the air have different effects on the body due to the different body shapes during driving.

For hatchbacks, there is no tail box design behind the body, so when the car is driving, the front of the car will wash away the air, and the separated air will flow backwards with the body, forming a vacuum area in the trunk of the rear of the car, and the dust and debris flowing backwards will flow to the vacuum area under pressure, and will stick to the rear glass.

However, because the tail box of the sedan is too large, the vacuum area generated at the rear of the car is in the trunk far away from the rear glass, and the rear glass is not easy to have dust, so it is not needed.

Wipers are not only used in cars, but also installed on faster planes and high-speed rail, and the wipers on airplanes are only used during take-off and landing, and the aircraft relies on radar to confirm the route when cruising, and the aircraft cruise is in the atmospheric stratosphere, and the rain is formed in the troposphere below the stratosphere, so the plane will not encounter rain when cruising.

The wipers are now getting smaller and smaller, and everyone found that there are not, and many cameras have wipers, which looks a little cute.

I don't know if my friends have such an experience, in a stormy evening, wearing a raincoat and pedaling a bicycle, the rain hit the face mercilessly, hit the face I endured, the key is to hit my glasses, I can't see clearly, and I want to hold the handlebars, and I want to pedal the bicycle, and I have to wipe the rain on the glasses, wipe the rain arm stretched out and the raincoat is still blocked, at that time I secretly swore in my heart, when I have money, I must buy a pair of glasses with wipers.