Bicycle Headset Internal Wiring Seal with Resilient Ribs
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Solution Overview
Problem
Existing bicycle headset designs lack effective waterproofing between wires and the head tube, leading to potential water ingress and damage to internal components.
Innovation Solution
A waterproof internal wiring structure featuring a sealing member with resilient ribs that snugly fit around the wires, filling gaps and preventing water ingress through wire holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If wires are concealed within the head tube through a central hole in the cover, then wire protection and aesthetic appearance are improved, but waterproofing is compromised due to large gap between wire and hole
Solution Approach 1:
The patent applies local quality by providing waterproof sealing only at the critical wire penetration points through the cover, rather than sealing the entire head tube. The sealing members are specifically positioned at the wire holes where water ingress is most likely to occur, creating localized waterproof zones that protect the internal components without requiring complete system sealing.
Solution Approach 2:
The patent introduces sealing members as intermediary elements between the wires and the cover interior. These sealing members act as mediators that bridge the gap between the wire surface and the cover wall, preventing water from penetrating through the gaps while maintaining the structural integrity and wire accessibility.
2Ease of manufacture
If the central hole diameter is much larger than wire diameter to allow wire passage, then ease of installation is improved, but waterproofing performance deteriorates due to large gaps
Solution Approach 1:
The patent applies preliminary action by pre-installing the sealing members into the wire holes before wire installation. The sealing members are positioned in advance to create the waterproof barrier, so that when wires are subsequently installed through the holes, the waterproofing function is already in place. This eliminates the need to compromise between hole size and waterproofing, as the sealing members adapt to any wire diameter.
3Adaptability or versatility
If multiple through holes are provided in the cover for wire passage, then wire routing flexibility is improved, but risk of water ingress increases with each additional opening
Solution Approach 1:
The patent applies segmentation by dividing the waterproofing function into multiple independent sealing members, each assigned to a specific wire hole. Rather than attempting to seal the entire cover as a single unit, the solution creates discrete sealing zones at each penetration point. This allows multiple wire holes to be provided for routing flexibility while each hole maintains its own independent waterproof protection.
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
Enhances the waterproofing and durability of the headset assembly by sealing gaps between wires and the head tube, thereby extending the lifespan and maintaining the integrity of internal components.
Implementation Method 1
Each wire hole has a resilient rib extending radially from an inner periphery thereof and forming a central inner hole. A diameter of the central inner hole is sized such that the resilient rib matches with a wire passing through the central inner hole to prevent water from entering the head tube.
Data Source
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AI summary
A waterproof internal wiring structure for a bicycle headset includes an upper headset assembly installed between a steerer tube of a front fork tube and a head tube. The upper headset assembly includes of a bearing, a seat, and a ring axially mounted. A sealing member and a cover are stacked on the ring. The sealing member is in a closed annular shape and includes wire holes for the passage of wires. The wire holes have a resilient rib radially from an inner periphery thereof to form a central inner hole. An inner diameter of the central inner hole is smaller than that of the wires. When the wires pass through the central inner hole, the resilient rib resiliently bends and adheres to an outer periphery of the wires to seal a gap between the wire hole and the wires to prevent water or debris from entering the head tube.