Bicycle Accessory Coupling Module With Tool-Free Load-Stable Clamping
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Solution Overview
Problem
Existing solutions for coupling accessories like child seats to bicycle frames require time-consuming tool-based assembly or provide insufficient stability for heavy loads.
Innovation Solution
A module with a main body, fastening part, and coupling means that allows tool-free attachment and adjustment, featuring a clamping mechanism with torque control and a spring-ratchet system for secure fastening, ensuring stability up to 25 kg loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If bolts and nuts with tools are used to connect two plates, then connection strength is improved, but installation time and complexity increase
Solution Approach 1:
The coupling module is divided into separate components: a coupling body that attaches to the bicycle frame and a fastening part that secures the accessory. This segmentation allows the fastening part to be quickly adjusted and secured without requiring tool-based assembly of multiple plates and bolts, thus reducing installation time while maintaining connection strength through the dedicated fastening mechanism.
Solution Approach 2:
The fastening part incorporates self-service features including a detent mechanism with engagement protrusions and recesses, along with a movable element that provides automatic locking. This self-locking mechanism eliminates the need for external tools during installation and adjustment, allowing users to quickly secure heavy accessories without requiring bolt tightening tools, thereby resolving the contradiction between strong connection and quick installation.
2Ease of operation
If hand-operatable coupling means are used, then installation simplicity is improved, but connection strength deteriorates
Solution Approach 1:
The fastening part employs a dynamic fastening mechanism where the movable element can transition between locked and unlocked positions. The detent mechanism with multiple engagement positions allows the user to easily adjust and secure the fastening part at different locations along the coupling body. This dynamic design provides both ease of operation for hand-adjustment and sufficient connection strength through the positive engagement of the detent mechanism, even for heavy loads up to 25 kg.
3Ease of operation
If a detachable adjustment portion is used, then ease of adjustment is improved, but structural complexity increases
Solution Approach 1:
The adjustment portion is nested within the fastening part, allowing it to slide along the coupling body and engage at different positions. The detent mechanism with engagement protrusions and recesses provides automatic positioning and locking at predetermined locations. This nested design enables easy adjustment of the fastening position along the coupling body while maintaining a compact structure, balancing ease of adjustment with structural simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides a simple, secure, and stable coupling of accessories to bicycle frames without tools, suitable for heavy loads, while maintaining safety and ease of use.
Implementation Method 1
The torque control means may comprise a spring and a ratchet configured to prevent the further clamping
Implementation Method 2
The torque control means may comprise a spring and a ratchet configured to prevent the further clamping
Implementation Method 3
an adjustment portion which consists of the portion of the fastening part providable in the slot of the main body, the adjustment portion being configured to regulate the clamping of the frame of the bicycle between the inward section and the clamping portion by clamping together the fastening part and the main body
Data Source
Figure 1a~2b
Figure 3a~3f
Figure 4
AI summary
The present disclosure is enclosed in the area of accessories for bicycles, in particular the coupling of accessories to bicycles, more specifically a module (10) which provides the coupling of accessories of larger volume - such as child seats - to a bicycle. It refers to a module (10) for the coupling of an accessory to the frame (100) of a bicycle. The module (10) comprises a main body (20), a fastening part (30) and coupling means (40) configured to couple the module (10) to an accessory. The fastening part (30) comprises a clamping portion (31) and an adjustment portion (32). These, together with the main body (20), allow to clamp and regulate the clamping of the frame (100) of the bicycle to an accessory by means of the module (10), solidly and without resorting to tools, being particularly suitable for accessories such as child seats.