Adjustable Massage Backpack Strap for Stable Shoulder Fit
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Solution Overview
Problem
Existing massage backpacks with shoulder strap massage functions often fail to fit properly, leading to discomfort and reduced massage effectiveness due to changes in the backpack's position on the user's back when adjusting the shoulder straps, and they do not adequately conform to the user's body shape.
Innovation Solution
The design separates the back panel into upper and lower parts, with adjustable shoulder straps using second webbings to ensure the massage head fits closely to the user's shoulder and back, incorporating ladder buckles for precise positioning and elastic storage spaces for the massage head, and uses fastening devices like Velcro to reduce noise and maintain fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shoulder strap elasticity is adjusted to change the massage head position, then the massage position can be adjusted, but the backpack position on the user's back changes simultaneously, compromising the massage effect
Solution Approach 1:
The shoulder strap system is segmented into multiple independent adjustment components: the first webbing for backpack position adjustment and the second webbing for massage head position adjustment. This segmentation allows independent control of each function, preventing the coupling problem where adjusting one parameter affects another.
Solution Approach 2:
The patent introduces dynamic adjustment mechanisms (ladder buckles and elastic webbings) that allow the user to adapt the massage head position to different body types and preferences. The elastic properties of the webbing provide continuous adaptability while maintaining stable positioning once adjusted.
2Device complexity
If only the shoulder strap structure is used for massage head positioning, then the structure is simple, but the massage head does not fit closely enough with the human shoulder, resulting in poor massage effect
Solution Approach 1:
The patent applies different structural qualities to different parts of the shoulder strap system. The second webbing connecting to the massage head uses elastic properties and ladder buckle adjustments to provide local adaptability and close fit at the massage interface, while the overall shoulder strap structure remains relatively simple and rigid for structural support.
3Ease of operation
If the second webbing adjustment causes the backpack to move up and down, then the massage position is adjusted, but left and right shaking occurs and the fit is compromised
Solution Approach 1:
The patent implements preliminary positioning through the ladder buckle mechanism on the second webbing, which allows the user to pre-set the massage head position before wearing the backpack. The friction and mechanical engagement of the ladder buckle maintain this pre-set position during movement, preventing unwanted shifting and shaking.
Data Source
AI summary
A backpack or other wearable body includes a massage head that can include an exposed silicone massage pad. The massage head can be located on a movable patch that is connected to a shoulder strap for adjustment of massage location and force. The massage head can be located in a storage space inside a shoulder strap and the storage space can include an opening including a zipper or other closing fastener that can be selectively opened to provide clearance for the massage head to move away from the body of the wearer and reduce massage pressure. The shoulder strap can include a cord connected to the massage head, wherein part of the cord is located outside of a tunnel of the shoulder strap and can be selectively pulled by a user to change a position of the massage head within the tunnel.