U-Shaped Handle Assembly Radial Locking Mechanism
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Solution Overview
Problem
Existing carrier and U-shaped handle assemblies lack a mechanism that allows for secure locking and easy unlocking, preventing accidental tipping and facilitating easy access to the carrier contents.
Innovation Solution
A rotatable handle assembly with a locking mechanism that locks in a radial direction using a spring force and can be unlocked by moving the handle towards the axis of rotation, featuring a locking element and recess in the main plane for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle is made rotatable with respect to the carrier, then easy access to carrier contents is improved, but the carrier becomes unstable and may tip over accidentally
Solution Approach 1:
The handle is designed to be rotatable relative to the carrier body, allowing dynamic adjustment between carrying position and access position. The handle can rotate about a horizontal axis to move from an upright carrying orientation to a horizontal access orientation, providing ease of operation while maintaining stability through controlled movement ranges.
Solution Approach 2:
The locking mechanism is extracted as a separate functional component that can engage or disengage independently. The lockable connection allows the handle to be secured in the carrying position to prevent accidental tipping, while enabling intentional rotation when access is needed. The user can choose to lock or unlock based on the required operation.
2Stability of the object's composition
If a locking mechanism is added to prevent accidental tipping, then carrier stability is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is designed to be self-actuating through spring-loaded elements. A spring-loaded locking element automatically engages with a corresponding recess when the handle is in the carrying position, providing stable locking without requiring active user intervention. The mechanism uses the natural spring force to maintain engagement, reducing complexity by eliminating the need for motors, sensors, or complex control systems.
3Ease of operation
If the locking element and recess are positioned in the main plane, then ease of unlocking is improved, but the structural complexity increases
Solution Approach 1:
The locking element and recess are positioned in the main plane of the handle assembly, allowing unlocking to occur through simple planar movement rather than requiring three-dimensional manipulation. The locking element can be moved laterally within the main plane to engage or disengage from the recess, simplifying the user action to a straightforward push or pull motion while maintaining effective locking functionality.
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 secure locking and easy unlocking of the handle, ensuring stability during use and convenient access to the carrier contents.
Implementation Method 1
the spring forces a pushing element, which passes through a through-hole in the carrier bearing, against the support
Data Source
Figure 1
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AI summary
In an assembly of a carrier and a U-shaped handle, the handle comprises a handle bar and two legs extending in a main plane, wherein end portions of the respective legs remote from the handle bar are mounted to the carrier and rotatable with respect to the carrier about a common axis of rotation, wherein at least at one end portion the assembly is provided with a locking mechanism for locking the handle with respect to the carrier in rotational direction about the axis of rotation at a predetermined locking position of the handle with respect to the carrier, in which locking mechanism one of the carrier and the corresponding end portion is provided with a locking element and the other one of the carrier and the end portion is provided with a recess that cooperates with the locking element. At the locking position the locking element and the recess are aligned and the end portion is movable with respect to the carrier in radial direction of the axis of rotation such that the recess receives the locking element when moving the end portion in the radial direction away from the axis of rotation. The assembly is provided with a spring, which forces the end portion in radial direction away from the axis of rotation when the handle is at the locking position.