Rear Handlebar Assembly for Stationary Bike Upright Posture
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Solution Overview
Problem
Traditional stationary exercise bikes lack sufficient arm support, making it difficult for riders to maintain an upright riding position for extended periods, leading to discomfort and strain on the neck and back.
Innovation Solution
A rear handlebar assembly is integrated with the seat and supporting member of the stationary bike, featuring a crossbar with hand grips positioned below the seat, connected via a joining member and extending member, allowing riders to support their hands and maintain an upright posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional stationary exercise bikes are used without rear handlebar assembly, then the structure remains simple and compact, but riders cannot maintain upright position for extended periods due to lack of arm support
Solution Approach 1:
The handlebar assembly is divided into separate components: a joining member with vertical and horizontal bores, a supporting member, a crossbar, and hand grips. This segmentation allows each component to perform its specific function while enabling easy assembly and disassembly, thus increasing duration of upright riding without permanently complicating the device structure.
Solution Approach 2:
The joining member incorporates a clasp mechanism that can dynamically adjust and secure the supporting member in various positions. This dynamic adjustment capability allows riders to customize the handlebar height and position for optimal comfort during extended upright riding, while the mechanism can be quickly released when not needed.
2Ease of operation
If rear handlebar assembly is added to stationary bike, then arm support is provided for upright position, but the device structure becomes more complex
Solution Approach 1:
The rear handlebar assembly merges multiple functions into a single integrated structure: the crossbar provides arm support, the joining member connects to both the seat supporting member and the crossbar, and the hand grips offer hand placement options. This merging creates a cohesive support system that improves ease of maintaining upright position without requiring multiple separate attachments that would complicate the device.
Solution Approach 2:
The supporting member serves multiple functions: it supports the seat, provides attachment points for the joining member, and acts as the structural backbone for the entire rear handlebar assembly. This multi-functionality reduces the need for additional separate components, thereby improving ease of operation without proportionally increasing device complexity.
3Ease of operation
If crossbar is positioned below the seat, then hand support is available for upright riding, but the joining member must accommodate both vertical and horizontal connections
Solution Approach 1:
The joining member is designed with nested bores: a vertical bore that receives the supporting member and a horizontal bore that receives the shaft connected to the crossbar. This nested configuration allows the joining member to accommodate both vertical and horizontal connections within a compact, integrated structure, providing comfortable upright riding support without excessive structural complexity.
Solution Approach 2:
The joining member transitions from a single-dimensional connection to a multi-dimensional connection system by incorporating both vertical and horizontal bores. This dimensional change allows the structure to connect to the supporting member vertically while simultaneously connecting to the crossbar horizontally, enabling comfortable hand support positions without creating a overly complex multi-component assembly.
Data Source
AI summary
A rear handlebar assembly in combination with a seat and a supporting member of a stationary bike, includes a seat of a stationary bike for supporting a rider thereon. A supporting member supports the seat of the stationary bike. A joining member includes a vertical bore and a horizontal bore, the vertical bore receiving therein the supporting member, the horizontal bore receiving therein a shaft coupled to flanges of the seat. A clasp holds the joining member against the supporting member. A crossbar forms a rear handlebar adapted to support the hands of a rider in an upright riding position. A rearwardly extending member connects the joining member to the crossbar. A pair of hand grips can be positioned on the crossbar.