Indexed Mower Handle Assembly for Height Adjustment and Vertical Storage
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Solution Overview
Problem
Typical walk-behind lawn mowers have a handle attached with a single fixed operative position, which does not accommodate operators of varying heights, leading to discomfort during use.
Innovation Solution
A handle adjustment assembly with indexing mechanisms and a clasp assembly that allows the handle to be selectively adjusted in height and rotated to multiple operative positions, including a stored position, enabling comfortable operation for users of different heights and facilitating storage without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single fixed operative position is used for the handle, then the structure is simple, but it does not accommodate operators of varying heights leading to discomfort
Solution Approach 1:
The handle assembly transitions from a fixed position to a dynamically adjustable structure with multiple operative positions. The indexing mechanism enables the handle to be positioned at different heights and angles, allowing operators to customize the configuration for their comfort while maintaining structural integrity through the indexing and clasp system.
2Adaptability or versatility
If a handle adjustment assembly is added to provide multiple operative positions, then operator comfort is improved, but the device complexity increases
Solution Approach 1:
The handle assembly is segmented into distinct functional components: the handle itself, the indexing mechanism with multiple positions, and the clasp assembly for securing. This segmentation allows each component to perform its specific function independently, providing multiple adjustable positions while keeping the overall structure manageable and maintainable.
Solution Approach 2:
The indexing mechanism acts as an intermediary between the handle and the deck, providing discrete predetermined positions. Rather than allowing continuous adjustment, the indexing mechanism mediates the connection by offering specific indexed positions, which simplifies the adjustment process while still providing adaptability for different operator needs.
3Ease of manufacture
If the handle is fixed in a single position, then manufacturing is simple, but it interferes with vertical storage of the mower
Solution Approach 1:
The handle assembly is designed to be dynamically reconfigurable, allowing it to be positioned in a vertical or storage orientation when not in use. The indexing mechanism enables the handle to be adjusted to a stored position that prevents interference with vertical storage, while the clasp assembly secures it in this position, thus enabling versatile storage options without complicating the manufacturing process.
Data Source
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AI summary
A handle adjustment assembly is attached to a walk-behind lawn mower, wherein the handle adjustment assembly is rotatably adjustable relative to a deck of the mower to allow the handle to be adjusted to multiple different heights relative to the ground at distinct operative positions. The handle adjustment assembly is also rotatable to allow the handle to be adjusted to a stored position adjacent to the deck, wherein the mower can be stored in a substantially vertical orientation.