Rotating Tool Attachment Device for Harness Wear Reduction
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Solution Overview
Problem
Existing hand-held motor-driven tool harnesses experience tool sliding on the hip pad, leading to wear, uneven load, and potential tool displacement, causing discomfort and reduced tool and hip pad longevity.
Innovation Solution
The attachment device is designed to be rotationally movable in a plane perpendicular to the hip pad's principal surface, preventing sliding and ensuring consistent contact, with a reliable release mechanism using a clamp and guide system that allows easy tool detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tool is secured to the hip pad using a hook and flat strap arrangement, then the tool can be easily released from the harness, but the tool will slide onto the hip pad during operator movement
Solution Approach 1:
The attachment device is made rotatable about a vertical axis, allowing it to dynamically adapt to operator movement while maintaining a fixed attachment point on the hip pad. This rotational freedom prevents sliding wear and maintains stable tool positioning without compromising the ease of release mechanism.
2Reliability
If the hook and tool bear against different parts of the hip pad, then the tool can be securely attached, but uneven load occurs on the hip pad
Solution Approach 1:
The attachment device concentrates the tool load onto a specific localized area of the hip pad through its fixed attachment point. By making the device rotatable rather than allowing it to slide, the load remains consistently applied to the same location, preventing uneven distribution and improving operator comfort while maintaining secure attachment.
3Adaptability or versatility
If the tool is allowed to move freely on the hip pad, then the operator has more flexibility, but the tool may end up outside the hip pad
Solution Approach 1:
The attachment device is made rotatable about a vertical axis, allowing it to dynamically adapt to operator movement while maintaining a fixed attachment point on the hip pad. This rotational freedom prevents sliding wear and maintains stable tool positioning without compromising the ease of release mechanism.
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
This solution reduces wear on the hip pad and tool, enhances user comfort, and prevents tool displacement, resulting in longer tool and hip pad lifespan and improved operational convenience.
Implementation Method 1
the attachment device is limited to be movable in a plane that is substantially perpendicular to a principal surface of the hip pad
Implementation Method 2
a clamp for connecting the attachment device to the hip pad is arranged
Implementation Method 3
the strap is released from the hip pad and the hook with the strap, and thereby also the tool, will drop to the ground due to gravitation
Data Source
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AI summary
The present invention deals with an arrangement for carrying a hand-held motor-driven tool on a harness having at least one shoulder strap. The arrangement comprises: a hip pad (20) arranged for connection to a harness (10), the hip pad having a principal surface (21); a hook (24) for receiving a tool; and a clamp (25) for connecting the hook (24) to the hip pad (20), the clamp being arranged at an attachment area (23) of the hip pad, and the clamp being openable such that the hook (24) can be released from the clamp (25). The hook (24) is further connected to the clamp (25) such that it is limited to be movable in a plane that is substantially perpendicular to said principal surface (21) at the attachment area (23) of the hip pad. Thereby, no sliding movement will occur between the hip pad and the hook or the tool, resulting in less wear of the hip pad and the tool.