Rack-Rod Backpack Mount for Wearable Strap Height Adjustment
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Solution Overview
Problem
Existing adjustable mounts for backpacks require the user to remove the backpack from their back to adjust the height of the shoulder straps, which is time-consuming and inconvenient.
Innovation Solution
An adjustable mount with a rack rod and teeth that allows height adjustment while wearing the backpack, using an actuating element to rotate the rack rod between locking and freeing positions, enabling vertical adjustment of the slide and support plate without removing the backpack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operating element is located on the outside of the rear wall facing the back of the wearer, then the adjustable mount can be operated from outside the backpack, but the wearer cannot adjust the height while wearing the backpack because access is blocked by the wearer's back
Solution Approach 1:
The operating element is moved from the rear exterior surface to the upper edge region of the housing, changing its spatial dimension and location. This allows the wearer to access and operate the element from the side/upper direction while the backpack is worn, bypassing the blockage caused by the wearer's back.
2Ease of operation
If the backpack is removed from the wearer's back to carry out adjustment, then the operating element can be accessed and adjustment can be made, but the process becomes time-consuming and inconvenient
Solution Approach 1:
The operating element is positioned in advance at the upper edge region of the housing, making it preliminarily accessible to the wearer's fingers while the backpack is being worn. This preliminary positioning of the control element allows immediate adjustment without requiring the backpack to be removed first.
3Adaptability or versatility
If the operating element is accessible from the front or side, then adjustment can be made while wearing the backpack, but the operating element may be less protected and more exposed
Solution Approach 1:
The operating element is nested within the housing structure at the upper edge region, rather than being completely exposed on the exterior. This nested positioning provides a degree of protection while still allowing access from the side/upper direction, balancing accessibility with protection.
Data Source
AI summary
An adjustable mount for a backpack has a housing secured to the backpack rear wall. A slide movable vertically inside the housing is formed with at least one transversely open recess. A support plate secured to the backpack straps is axially fixed to the slide for joint axial movement therewith. A rack rod rotatable but axially fixed in the housing has a plurality of axially spaced and radially projecting teeth. The rack rod is rotatable between a locking position with at least one of the teeth engaged in the recess and thereby preventing movement of the slide in the housing and a freeing position with the teeth disengaged from the slide and the slide and support plate relatively movable. An actuating element projecting from and fixed to the rod outside the housing is actuatable by the wearer of the backpack to rotate the rod its positions.