Foldable Mower Handle Structure for Compact Transport Safety
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Solution Overview
Problem
Existing lawnmowers face challenges in efficient storage and transportation due to their size and weight, requiring either a large storage space or being lightweight, which complicates the transport process.
Innovation Solution
A lawnmower design featuring a foldable operating arm and handle structure, allowing for a compact storage configuration and improved ergonomics during transport, combined with a safety switch mechanism to prevent accidental operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lawnmower uses a traditional fixed operating arm and handle structure, then it provides stable operation during cutting, but it increases the volume and requires large storage space
Solution Approach 1:
The operating arm is designed to be foldable rather than fixed, allowing it to change its configuration from an extended operational position to a folded compact position. This dynamic structure enables the lawnmower to reduce its volume for storage and transport while maintaining the necessary operational characteristics during use.
Solution Approach 2:
The operating arm can be folded inward toward the main body of the lawnmower, with the cylindrical gripping portion positioned close to the handle axis when folded. This nesting-like configuration allows the operating components to occupy minimal space during storage while providing full functionality during operation.
2Volume of moving object
If the lawnmower is designed with a compact structure for easy transport, then it reduces storage volume, but it may compromise the operator's comfort during transport
Solution Approach 1:
The design provides different configurations for different operational needs: when folded for transport, the operating arm creates a compact profile suitable for storage; when extended for operation, it provides the necessary leverage and control. The cylindrical gripping portion's specific positioning and dimensions are optimized for each state, ensuring comfort during transport when folded and control during operation when extended.
Solution Approach 2:
The foldable operating arm allows the lawnmower to adapt its structure dynamically between storage and transport modes, optimizing both volume reduction and operator comfort for each specific condition rather than compromising either aspect.
3Strength
If the lawnmower uses a heavy structure for durability, then it provides strength and stability, but it increases weight making transport difficult
Solution Approach 1:
The foldable operating arm structure allows the lawnmower to maintain structural strength when needed while reducing its effective transport weight through compact configuration. The ability to fold the operating arm reduces the moment of inertia and effective leverage during transport, making it easier to handle while maintaining full structural integrity during operation.
Data Source
AI summary
A mower includes a main body having an electric motor configured to drive a mowing member, a pair of front wheels, and a pair of rear wheels. A supporting portion is associated with the main body and a handle is connected to the main body and rotatable between a first position and a second position. The handle comprises an operation assembly operable by a user to control the electric motor. A controller prevents the electric motor from being activated by a user operation of the operation assembly when the mower is in a first state in which the supporting portion and the pair of rear wheels are used to support the main body on a supporting surface with the handle in the first position.