Adjustable Ladder Knee Rest with Padded Frame
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Solution Overview
Problem
Existing ladder pads provide inadequate comfort and adjustability, as they often attach directly to a ladder rung and offer only a single point of contact, leading to discomfort during extended use.
Innovation Solution
A ladder knee rest with a frame, pads, and adjustable securing straps that allow for adjustable positioning along the ladder, providing padded contact points above and below the knee, ensuring comfort and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing ladder pads attach directly to a ladder rung, then they provide cushioning to the user's legs, but they cannot be easily moved up and down the ladder when the user changes positions
Solution Approach 1:
The knee rest is designed with a movable attachment system that allows it to be repositioned along the ladder rungs. The securing straps with buckles enable the knee rest to be dynamically adjusted to different heights, transforming a static attachment into a dynamic, adjustable system that adapts to changing user positions on the ladder.
2Ease of operation
If existing ladder pads provide a single point of contact, then they simplify the structure, but users experience discomfort when they repeatedly press their legs against a single point of contact
Solution Approach 1:
The knee rest is divided into multiple contact points arranged vertically along the frame. Instead of a single padded surface, there are several padding elements positioned at different heights, allowing the user's leg to rest across multiple segments simultaneously. This segmentation distributes the pressure and provides comfort during repeated use.
3Ease of operation
If the knee rest provides padded contact points above and below the knee, then user comfort is improved, but the device requires more complex structure to accommodate multiple contact points
Solution Approach 1:
The frame structure serves multiple functions simultaneously: it provides the structural support for the knee rest, acts as the mounting system for the adjustable straps, and forms the vertical arrangement that enables multiple contact points. This multi-functionality reduces the need for additional separate components, managing complexity while delivering comfort.
4Strength
If the knee rest is made of hard ladder materials, then the structure is strong and durable, but it becomes uncomfortable or painful for users to rest their knees against it for long periods
Solution Approach 1:
The knee rest applies local quality by using hard materials for the frame structure to ensure strength and durability, while covering specific contact areas with soft padding materials. This creates a differentiated structure where the frame provides structural integrity and the localized padding provides comfort at the user contact points.
Data Source
AI summary
A ladder knee rest comprising a padded frame with top and bottom lateral arms separated by a central support column. The frame can be hung in front of a ladder with a positioning strap, and the length of the positioning strap can be adjusted to move the frame vertically up or down the ladder. Securing straps extending from the lateral arms can be connected behind the ladder and tightened to prevent side-to-side movement. A user's knees can be placed between the padded top and bottom lateral arms to reduce pain and/or discomfort in the user's legs while the user works on the ladder.