Pivoting Handle Assembly With Slot Locking Mechanism
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Solution Overview
Problem
Existing handle assemblies for machines like lawn mowers and snow throwers do not allow for easy adjustment of the handle position without stopping the machine or releasing the operator's grip, limiting navigation around obstacles and flexibility during operation.
Innovation Solution
A pivoting handle assembly with a locking mechanism that allows the handle segment to be rotated to multiple angular positions, using a mating component with slots and a locking member that can be actuated to change positions without requiring the operator to remove their hands from the handles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the handle assembly is made fixed and stable, then the machine structure is simple and reliable, but the operator cannot adjust the handle position to navigate around obstacles
Solution Approach 1:
The handle assembly is divided into multiple segments (first handle segment, second handle segment) that can be independently positioned and locked. The mating component with multiple slots allows each segment to be segmented into different angular positions, enabling adjustment while maintaining structural integrity through the locking mechanism.
Solution Approach 2:
The handle assembly transitions from a static fixed structure to a dynamic adjustable structure. The pivoting capability allows the handle segments to rotate between different angular positions, and the locking mechanism enables the system to maintain selected positions dynamically during operation, providing adaptability without requiring complete disassembly.
2Ease of operation
If the handle assembly allows easy position adjustment, then the operator can navigate around obstacles flexibly, but the locking mechanism becomes more complex
Solution Approach 1:
The locking mechanism is designed to be self-servicing through the operator's existing grip on the handles. The first handle segment acts as both a grip surface and an actuation mechanism - when the operator applies force to the first handle segment, it automatically pivots and engages/disengages the locking member with the appropriate slot, eliminating the need for separate locking tools or complex control systems.
Solution Approach 2:
The first handle segment serves multiple functions: it provides a grip surface for the operator, acts as an actuation lever for the locking mechanism, and serves as a structural connection element. This multi-functionality reduces the need for additional components and simplifies the overall locking mechanism while maintaining ease of operation.
3Productivity
If the handle assembly requires stopping the machine for position adjustment, then the locking is more secure, but the productivity and operational efficiency decrease
Solution Approach 1:
The handle assembly allows position adjustment during continuous machine operation without requiring the machine to stop. The locking mechanism maintains secure engagement while the machine is in motion, enabling the operator to adjust handle position on-the-fly and continue productive work without interruption, thereby maintaining both reliability and productivity.
Data Source
AI summary
According to examples, a machine may include a base housing and a handle assembly mounted to the base housing and extending at an angle from the base housing along a handle plane. The handle assembly may include a mating component having a plurality of slots arranged at multiple angular positions along a slot plane, the slot plane being parallel to the handle plane. The mating assembly may also include a handle segment rotatably mounted to the mating component, the handle segment housing a locking member, in which the handle segment is rotatable along the slot plane relative to the base housing and the locking member is removably insertable into a first slot of the plurality of slots when the handle segment is in a first angular position and is removably inserted into a second slot of the plurality of slots when the handle segment is in a second angular position.