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Windscreen Wiper Production Recounted For Your Amusement.

Posted: August 28, 2010 | By: | In: Autos and More

The common wiper blades design is so good that it has gone around the planet like wild fire but regardless of where they are discovered they are nearly all manufactured the same way. Most factories producing wiper blades get there parts from other contractors which are assigned and stored on the premises. These are all then transferred as called for down to the factory floor and assembly line where cheap labour is exploited to make massive profits. The initial wiper blades design was actuated by hand from inside the cars cab, times have now changed and today’s sort of wiper blades rely on electricity. Two huge parts from sub contractors are therefore called for in order to construct a fully operational wiper blade appliance. These components are an electric motor, a worm gear and a linkage system or operation to lock all these parts together.

The linkage system is the part which converts motion of the electric motor into the movement of the windscreen wipers across the screen. The worm gear is a wierdly named device but gets its label from its appearance which looks like a straight bar which is threaded down its length by a helical pattern. This worm gear comes with it the feature to multiply the output or torque of the electric motor by large amounts and at the same time slowing the output by a huge quantity. It is this component which renders the whole windscreen wipers machine possible converting the output of the electric motor into something practical to power the windscreen wipers. This part is passed to the linkage system which translated the windscreen wipers back and fourth in a chastened motion over the wind screen glass. When the windscreen wipers reaches it’s lowest position a simple electronic device senses this and shuts off the power to the windscreen wipers.

In this way the wipers are always stopped in the down position away from the windscreen so as not to obscure the driver’s precious vision. A cam shaft is then placed to the worm gear and this cog turns in time with the output of the electronic motor and the worm gear. The cam turns and is fixed to a shaft with is often a long stick and as the cog or cam shaft rotates the long stick or rod is actuated forward and back. This rod is then switched to another which actuates the wipers mechanism on the passenger side as well as the driver’s side. The wipers configuration itself has a few options, one it can be aligned in tandem as described above or alternatively just a single unit wipers can be placed in the centre of the wind screen. The result of this enterprise will then undergo some form of quality control testing by a skilled professional who will make sure they are operating in reasonable parameters. These if ok can then be boxed up and sent to retail outlets and car makers, the waster from this enterprise can often be sold on again as scrap which is nice news for the environment. Currently in this writers opinion the best quality wipers today are made from silicone and can be bought online for large discounts.

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