Adjustable Harness Carrier Assembly With Sliding Locking Interface
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Solution Overview
Problem
Existing harnesses for carrying heavy forestry and garden equipment, such as clearing saws, often compromise comfort and weight distribution when adjusting shoulder straps for users of varying heights, leading to instability and discomfort.
Innovation Solution
An adjustable carrier assembly with a back plate and interface plate featuring parallel raised ridges and overhanging flanges for secure linear connection, along with resilient locking tabs for incremental adjustments, allowing for quick and secure size changes without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shoulder straps are adjusted to accommodate very tall or short users, then the harness can be used by users of different heights, but the comfort and weight-distributing performance of the harness is compromised
Solution Approach 1:
The back plate allows dynamic adjustment of the interface plate position along the longitudinal axis through a sliding mechanism with locking positions, enabling the harness to adapt to different user heights while maintaining optimal comfort and weight distribution for each user size
2Adaptability or versatility
If the shoulder straps are maximally extended for tall users, then the harness can accommodate tall users, but the harness becomes more unstable
Solution Approach 1:
The interface plate can be positioned at multiple locking locations along the back plate, allowing tall users to extend the shoulder straps while maintaining harness stability through proper positioning at one of the designated locking positions
3Adaptability or versatility
If the waist belt is placed lower on the body for short users, then the harness can accommodate short users, but the weight distribution becomes suboptimal and uncomfortable
Solution Approach 1:
The interface plate positioning mechanism allows short users to reduce the distance between the waist belt and shoulder straps by selecting an appropriate locking position, thereby maintaining optimal weight distribution and comfort while accommodating different user heights
4Adaptability or versatility
If the back plate connection uses a snap-fit type with multiple holes for size adjustment, then the harness can be adjusted to three distinct sizes, but disconnection and reconnection is cumbersome
Solution Approach 1:
The interface plate slides along the back plate and can be quickly locked or unlocked at different positions without complete disassembly, enabling rapid size adjustment between multiple positions while maintaining secure connection during use
Solution Approach 2:
The adjustment mechanism is divided into discrete locking positions along the back plate, allowing incremental size adjustment while maintaining structural integrity and ease of operation
Data Source
Figure 1a~1b
Figure 2a~3b
Figure 4~5
AI summary
A carrier assembly for a harness (1) for carrying a motor-driven power tool. The carrier assembly comprises a back plate (10) and an interface plate (40) including connections (41) for shoulder straps (2) , the back plate (10) comprises a coupling interface (12) on a front face (10b) arranged to be removably connected to a corresponding coupling interface (42) on a rear face (40a) of the interface plate (40) , the coupling interface (12) of the back plate (10) is adapted to be connected to and disconnected from the coupling interface (42) of the interface plate (40) in an at least partially translational or linear movement which is substantially parallel to the back plate (10) .