Eccentric Cam Twist-Lock Prototype
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Description
A three-piece prototype demonstrating an internal cam-based locking mechanism for telescoping poles. The inner tube carries an eccentric spool on its tip; twisting the handle forces the captive cam outward against the walls of the outer tube to lock the extension at any length.
Mechanism Notes
- Offset: The spool is offset by 1.5 mm, which translates to a full lock within roughly a 15 to 20-degree twist.
- Guide Rail: The outer tube features an internal rail. The cam is slotted to ride this rail (preventing it from turning), while the inner tube has a wide 90-degree channel cut out so it can rotate freely past the rail.
- Assembly: Slide the inner tube up through the outer tube until the spool clears the top, snap the cam onto the spool sideways via its keyhole slot, and pull the whole assembly back down into the housing.
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Eccentric Cam Twist-Lock Prototype
A three-piece prototype demonstrating an internal cam-based locking mechanism for telescoping poles. The inner tube carries an eccentric spool on its tip; twisting the handle forces the captive cam outward against the walls of the outer tube to lock the extension at any length. Mechanism Notes Offset: The spool is offset by 1.5 mm, which translates to a full lock within roughly a 15 to 20-degree twist. Guide Rail: The outer tube features an internal rail. The cam is slotted to ride this rail (preventing it from turning), while the inner tube has a wide 90-degree channel cut out so it can rotate freely past the rail. Assembly: Slide the inner tube up through the outer tube until the spool clears the top, snap the cam onto the spool sideways via its keyhole slot, and pull the whole assembly back down into the housing.
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