"To celebrate the occasion, Google has explained why it chose to build a gearless hinge for the Pixel 10 Pro Fold, and it's all about offering more "without sacrificing the benefits of pro-level phones". Google's designers and engineers took the less safe and more aggressive path with regard to the hinge, as well as the phone's overall "aggressive dimensions", which is how Claude Zellweger, who leads the Pixel industrial design team, sees them."
"A typical hinge has four gears with teeth that let the two halves of the device rotate symmetrically as it opens and closes. The gearless hinge maintains this symmetrical motion by using CAMs, which are mechanical components that convert rotational motion to linear motion, allowing the hinge to save some space. The CAMs are spring-loaded so when either half of the device is opened, the other is forced to follow."
Google designed the Pixel 10 Pro Fold with a gearless, CAM-based hinge to avoid gear-related dust buildup and long-term degradation, improving reliability. CAMs convert rotational motion to linear motion and are spring-loaded so when one half opens the other follows, preserving symmetrical motion while saving space. The gearless hinge enabled larger displays, smaller bezels, and a bigger battery while protruding less for improved in‑hand grip and feel. Eliminating gear cavities made IP68 dust and water resistance achievable. Designers accepted a less safe, more aggressive hinge and overall dimensions to deliver pro-level benefits without sacrificing core foldable performance.
Read at GSMArena.com
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