Rotating Handle Assembly with Friction Brake Mechanism
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Solution Overview
Problem
Conventional handle systems for tactical rifles lack the ability to be quickly and easily reoriented or repositioned about a cylindrical body, requiring removal from rail systems and limiting orientation options to predetermined positions, which is time-consuming and restrictive.
Innovation Solution
A rotatable handle assembly featuring a clip member that fits around a cylindrical object with an internal surface mating to the object and an external track or rail, allowing the handle to rotate about a longitudinal axis, with an actuator that moves a braking member into locked or unlocked positions to facilitate easy installation, removal, and reorientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle is fixed to the rail system at predetermined positions, then the device complexity is reduced, but the adaptability and ease of operation deteriorate because the operator cannot quickly reorient the handle to comfortable positions
Solution Approach 1:
The handle assembly transitions from a static fixed-position design to a dynamic adjustable design. The brake mechanism allows the handle to be locked at any angular position around the longitudinal axis, enabling continuous position adjustment rather than discrete predetermined positions. This dynamic capability resolves the contradiction by providing operational flexibility without requiring complex multi-component adjustment mechanisms.
Solution Approach 2:
The handle assembly is segmented into independent functional components: the handle body, the brake mechanism, the actuator, and the mounting interface. This segmentation allows each component to perform its specific function efficiently - the brake provides friction-based positioning, the actuator enables easy engagement/disengagement, and the mounting interface secures the assembly to the rail. This modular approach achieves adaptability without proportionally increasing overall device complexity.
2Adaptability or versatility
If the handle can be removed and reinstalled on the rail system, then the adaptability improves, but the productivity deteriorates because the process is time-consuming
Solution Approach 1:
The brake mechanism is pre-configured with friction surfaces and actuation geometry that automatically engages when the handle is positioned near the desired location. The actuator is pre-positioned to provide mechanical advantage for quick engagement. This preliminary configuration of the mechanical elements allows the operator to secure the handle in a new position with a simple motion, eliminating time-consuming alignment and fastening procedures while maintaining full repositioning capability.
3Ease of operation
If the handle is locked in fixed positions, then the stability of the handle position is improved, but the ease of operation deteriorates because the operator cannot adjust to comfortable positions
Solution Approach 1:
The brake mechanism is designed with self-adjusting friction characteristics that automatically provide appropriate holding force once the handle is positioned. The actuator mechanism includes detent features or spring-loaded elements that self-lock the brake in the engaged position, maintaining handle stability without requiring continuous operator input. This self-service capability allows easy position adjustment while ensuring the handle remains securely locked at the selected position.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quick and versatile reorientation of the handle without interfering with other accessories, allowing for comfortable positioning and easy attachment/detachment from cylindrical objects like handguards, enhancing user convenience and operational flexibility.
Implementation Method 1
the braking member comprising a braking surface that is movable into and out of contact with the track or rail
Data Source
AI summary
Rotatable handles and related methods are disclosed herein. In one form, the handle has a clip member that fits around a cylindrical object and a handle. The clip member includes a track that guides rotation of the handle about a longitudinal axis of the cylindrical object. The handle includes an actuator that operates a braking member which comprises a braking surface that is movable into and out of contact with the track. When the braking surface is out of contact the track, the handle is movable relative to the track when permitting the handle to rotate about a longitudinal axis of the cylindrical object. Rotating the handle about the longitudinal axis of the handle operates the actuator, causing the braking surface to move into and out of contact with the track. Various methods are also disclosed herein with respect to the rotatable handle.