Bicycle Carrier Locking Structure for Stable Door Opening
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Solution Overview
Problem
Conventional bicycle carriers experience unstable relative movement between the main frame and mounting rod during vehicle travel, leading to potential bicycle falls due to easy disengagement of the positioning mechanism.
Innovation Solution
A carrier design featuring a mounting rod with an inclined surface, a connecting seat that rotates between two positions, and a first pin for stable positioning, along with an elastic buckle member to prevent unexpected disengagement, ensuring the connecting seat remains stable during vehicle movement while allowing rear door opening without obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the positioning mechanism is made easy to disengage for door opening, then the ease of operation is improved, but the stability during travel deteriorates
Solution Approach 1:
The carrier employs a dynamic positioning mechanism that adapts its locking behavior based on operational state. During travel, the mechanism maintains strong engagement between the positioning member and positioning hole to ensure stability. When the rear door needs opening, the mechanism dynamically transitions to an unlocked state, allowing the connecting seat to rotate freely. This dynamic adaptation resolves the contradiction between operational ease and travel stability.
Solution Approach 2:
The positioning mechanism incorporates automatic locking and unlocking functions that operate without external intervention. The elastic component automatically engages the positioning member with the positioning hole when the connecting seat assumes a stable position, and automatically disengages when force is applied during door opening. This self-service capability eliminates the need for manual operation while maintaining both stability and ease of door opening.
2Ease of operation
If the connecting seat is rotatably connected to allow door opening, then the ease of operation is improved, but the stability of relative movement deteriorates
Solution Approach 1:
The carrier system is segmented into distinct functional components: the rotatable connecting seat for door access, and the positioning mechanism for stability. The connecting seat includes a positioning member that can engage with a positioning hole in the mounting rod, creating separate locked and unlocked states. This segmentation allows the system to provide both rotational freedom for door opening and stable positioning during travel.
Solution Approach 2:
The positioning member acts as an intermediary element between the connecting seat and the mounting rod. When engaged, it mediates the rotational movement by providing a fixed reference point, preventing unexpected relative rotation. The elastic component serves as another intermediary, mediating the force transmission between the positioning member and the connecting seat, ensuring smooth engagement and disengagement while maintaining stability.
Data Source
AI summary
A carrier is provided, including: a mounting rod including an inclined surface; a frame body, including a connecting seat which includes an upper plate connected to the two side plates and two side plates rotatably connected to the mounting rod, a stand rod and two lateral rods, the stand rod and the two lateral rods being connected to the connecting seat, wherein when located in a first position, the connecting seat is parallel to the mounting rod, and when the connecting seat is located in a second position, the inclined surface is abutted against the upper plate; a first pin, wherein when the connecting seat is located in the first position, the first pin is inserted in the mounting rod and at least one of the two side plates so that the connecting seat is positioned in the first position and non-rotatable toward the second position.