Adjustable Carriage Assembly With Dual-Pin Weight Locking
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Solution Overview
Problem
Existing weightlifting equipment, such as weight racks and articulating arms, face challenges with difficulty in adjustment and inability to support large weights, lacking in versatility and stability.
Innovation Solution
An adjustable carriage assembly with a locking structure featuring moveable pins and handles for easy positioning and secure locking along a frame member, allowing for versatile and stable weight support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single pin locking mechanism is used, then the structure is simple, but the reliability of weight support is insufficient
Solution Approach 1:
The locking mechanism is divided into two separate pins (first pin and second pin) that can independently engage with the frame member. Each pin provides a separate locking action, distributing the load and improving reliability. The segmentation allows each pin to be simpler in design while collectively providing robust weight support.
Solution Approach 2:
The first and second pins are positioned at different locations along the carriage assembly, with the first pin engaging at a first location and the second pin engaging at a second location. This spatial distribution of locking points provides localized support at critical positions, enhancing overall reliability without requiring complex mechanisms at each point.
2Ease of operation
If pins must be moved individually, then the locking is secure, but the ease of operation is reduced
Solution Approach 1:
The first pin and second pin are coupled together through a coupling mechanism that allows them to move simultaneously. When the user actuates the coupling mechanism, both pins move together to engage or disengage from the frame member. This merging of movement simplifies the operation to a single action while maintaining the secure locking provided by two separate pins.
3Adaptability or versatility
If the carriage is fixed in position, then the stability is high, but the adaptability for different positions is limited
Solution Approach 1:
The carriage assembly incorporates a dynamic locking mechanism where the first and second pins can be moved between engaged and disengaged positions. This allows the carriage to transition between fixed (locked) and movable states. The coupling mechanism enables coordinated movement of both pins, providing stable locking when engaged and smooth adjustment when disengaged, thus achieving both stability and adaptability.
Data Source
AI summary
An adjustable carriage assembly includes a carriage defining a passage configured to receive a frame member therethrough such that the carriage is moveable along the frame member, and a locking structure configured for engaging the frame member to lock the carriage in position relative to the frame member. The locking structure includes a main pin and an auxiliary pin connected to the carriage that are each moveable between a locked position, where the respective pin extends into the passage and is configured to engage the frame member to lock the carriage in position, and an unlocked position, where the respective pin is retracted from the passage and is configured to disengage from the frame member. The carriage may also include a first portion and a second portion, where a space is defined between the first and second portions, and the second portion is adjustable with respect to the first portion.