Hidden Handle Assembly with Rotatable Rocker Arm
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Solution Overview
Problem
Conventional handles protrude from door panels, leading to collisions, reduced service life, and increased wind resistance, especially in vehicles, necessitating a concealed handle assembly that is flush with the door panel for aesthetic and functional improvements.
Innovation Solution
A concealed handle assembly with a rotatable handle body and rocker arm mechanism, driven by a motor and torsion spring, allowing the handle to extend and retract smoothly, maintaining a flush surface while enabling easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle protrudes from the door panel, then the handle is easily accessible and operable, but the handle is prone to collision and damage, reducing service life
Solution Approach 1:
The handle assembly employs a rotatable handle body that can dynamically change its position between a protruding state (for easy operation) and a concealed state (for protection). The handle body rotates about a first axle, allowing it to extend when needed and retract to be flush with the door panel, thus resolving the contradiction between accessibility and durability
Solution Approach 2:
The handle body is nested within the door panel when not in use, with the rotation mechanism housed inside the door panel structure. The handle body can rotate in and out from the concealed position, effectively hiding the handle when not needed and providing easy access when required, thereby protecting against collision while maintaining operability
2Ease of operation
If the handle protrudes from the door panel, then the handle is easily accessible, but the wind resistance increases for vehicles during travel
Solution Approach 1:
The handle assembly dynamically adjusts its profile by rotating the handle body between a protruding position (for easy access) and a concealed position (for reduced wind resistance). This dynamic reconfiguration allows the vehicle to maintain aerodynamic efficiency during travel while providing accessible handle operation when needed
Solution Approach 2:
The handle assembly is segmented into the handle body, rotation mechanism, and mounting structure. The handle body can be rotated independently to change the aerodynamic profile, while the rotation mechanism and mounting structure remain integrated into the door panel, allowing the handle to be repositioned to reduce wind resistance without compromising structural integrity
3Shape
If the handle is concealed to be flush with the door panel, then the aesthetic appearance and wind resistance improve, but the operational simplicity may be compromised
Solution Approach 1:
The handle body rotates about a first axle to transition between concealed and protruding states, providing easy operational feedback and tactile sensation. The rotation mechanism includes a rocker arm that pivots about a second axle to drive the bolt, ensuring that the concealed handle maintains operational simplicity through intuitive mechanical feedback
Solution Approach 2:
The rocker arm acts as an intermediary mechanism that translates the rotation of the handle body into the movement of the bolt. This intermediary mechanism ensures that the concealed handle assembly maintains operational simplicity by providing clear mechanical feedback and reliable actuation without requiring complex electronic or control systems
4Ease of operation
If a rotation mechanism with multiple components is used, then the handle can extend and retract smoothly, but the device complexity increases
Solution Approach 1:
The rotation mechanism merges the handle body rotation and bolt actuation functions into a single integrated mechanism. The rocker arm simultaneously connects the handle body rotation to the bolt movement, eliminating the need for separate actuators and reducing overall system complexity while maintaining smooth operation
Solution Approach 2:
The rotation mechanism is designed to be self-actuating through the interaction between the handle body and rocker arm. The rotation of the handle body automatically drives the bolt through the rocker arm mechanism, eliminating the need for external motors, sensors, or control systems, thus reducing device complexity while ensuring smooth extension and retraction
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
The solution provides a durable, aesthetically pleasing, and wind-resistant handle assembly that reduces the risk of collision and enhances operational simplicity and reliability.
Implementation Method 1
a torsion spring, configured to apply a deflection force to the rocker arm, one end of the torsion spring being connected to the handle base and the other end to the rocker arm
Data Source
AI summary
A concealed handle assembly that includes a handle base and a handle body rotatable about a first axle such that one end of the handle body can extend or return to a concealed state, the first axle being disposed on the handle base, the handle body having a handle body initial position, a handle body first open position, and a handle body second open position. The assembly further includes a rocker arm rotatable about a second axle, the second axle being disposed on the handle base, the rocker arm having a rocker arm initial position, a rocker arm first open position, and a rocker arm second open position, the rocker arm being capable of being rotated away from or returned to the rocker arm initial position as the handle body rotates, the rocker arm being capable of driving a bolt.