Brose develops latch concept for side doors
Compared to available solutions, the recently developed latch system weighs much less despite its robust design and provides automakers with major benefits regarding installation space. It unlocks extremely fast, enhancing the car driver’s comfort. And its high common-part usage provides a proliferation of options with proven quality.
Compared to available solutions, the recently developed latch system weighs much less despite its robust design and provides automakers with major benefits regarding installation space. It unlocks extremely fast, enhancing the car driver’s comfort. And its high common-part usage provides a proliferation of options with proven quality. “We completely reconsidered the latch concept. What we then came up with was a new kind of clutch concept, where the number of components had been noticeably decreased,” explains Simon Brose, head of closure system design and components in Wuppertal – and a namesake of the company founder, Max Brose.
Based loosely on the ‘Less is more’ principle, proven components take on multiple functions interacting skilfully with the patented clutch. The result of this reduction in components in the core area of the latch are weight savings of around one kilogram in a four-door car and roughly 60 percent less installation space; at the same time, providing the greatest possible comfort, very good haptic and acoustic feedback as well as functional safety.
Positive consequences resulting from minimising the masses moved can be seen in the subsequent low energy consumption of the electric motors as well as in the shorter unlocking times of less than 25 milliseconds. In comparison, the fastest of the latches commercially available require 40 milliseconds.
Modular design latch variants for cross-model use The innovative core module of the Brose latch components is intended to see use in all car variants of automakers across the board. Depending on their specifications, the proliferation of options ranges from manually operated closure systems to the power opening high-end variant. Thanks to a far-reaching common-part strategy and modular structure, it requires little effort to be adapted to meet customer requirements.
The high level of common parts used in all latch variants makes it possible for Brose to have lean, highly automated manufacturing facilities for cross-client core products. Generating variants does not occur until a relatively late point in the assembly line. Short response times ensure Just-In-Time capability and automakers can profit from this cost effectiveness and flexibility.
Automakers can also gain additional benefits through the latch module: in this case, one sub-assembly comprises the latch, inside door handle and all relevant electric and mechanical connections. Brose can be seen following up this notion of systems with the door system: all the essential components of vehicle door are comprised on the vehicle door – from the window regulator to the latch.
Use of the lighter plastic as a carrier material in combination with the new Brose latch enhances weight savings by as much as five kilograms overall per vehicle, coupled with the respective cost savings.
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