Adjustable Backrest Assembly with Segmented Carriage Mechanism
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Solution Overview
Problem
Conventional adjustable exercise benches do not accommodate users of varying heights, leading to suboptimal safety and proper form during workouts as users must contort themselves to fit on the bench.
Innovation Solution
A backrest assembly with multiple segments and carriage members that allow for upward and downward movement along a mounting bar, enabling users to adjust the height of the headrest and backrest segments to fit their individual height, ensuring comfort and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional adjustable exercise benches are manufactured according to standard specifications, then manufacturing cost and simplicity are improved, but adaptability to users of different heights deteriorates
Solution Approach 1:
The backrest is divided into multiple adjustable segments (headrest, upper backrest, lower backrest) that can be independently positioned at different heights along the mounting bar, allowing customization for users of various heights while maintaining a standardized overall structure
Solution Approach 2:
The backrest segments are made dynamically adjustable through the carriage member mechanism with release levers, enabling users to change the height configuration of each segment according to their individual needs, transforming a static standard bench into an adaptable system
2Adaptability or versatility
If the backrest height is made adjustable to accommodate different user heights, then adaptability is improved, but device complexity increases
Solution Approach 1:
The carriage members are nested within the mounting bar structure, with each carriage member containing a release lever mechanism that operates within the confines of the mounting bar, creating a compact integrated design that adds functionality without proportionally increasing overall complexity
Solution Approach 2:
The release lever mechanism allows users to independently adjust each backrest segment height without requiring external tools or complex assembly procedures, enabling self-service adjustment that simplifies the user interface despite the underlying mechanical complexity
Data Source
AI summary
A backrest assembly for an exercise bench includes a mounting bar, a first carriage member, a headrest, and a backrest. The first carriage member is configured for slidable insertion within a hollow cavity in the mounting bar. A back surface of the headrest is coupled to the first carriage member. The backrest segment is configured for upward and downward movement along the mounting bar. In one embodiment, the backrest assembly has at least two segments, such as an adjustable first backrest segment, and an adjustable second backrest segment.