Bicycle Headset Cable Routing with Rotational Detangler
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Solution Overview
Problem
Existing cycle headset transmission systems face issues with cable tangling and contamination when handlebars rotate beyond 180 degrees, particularly when trying to transmit multiple control signals like brakes and gear controls, and current solutions either interfere with the rider or require custom headset components, leading to increased costs and reduced user freedom in choosing bike components.
Innovation Solution
A headset transmission system with a first and second transmission member mounted about the steerer tube's rotational axis, where the first member rotates and translates to handlebar levers, and the second member, rotationally isolated, translates to frame-mounted levers, allowing for the transmission of multiple control signals while preventing cable tangling and contamination, and is designed to fit within standard headset sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an external rotating cuff (GYRO) is used to allow handlebar rotation beyond 180 degrees, then cable tangling is prevented, but the device can only transmit one type of control and may interfere with the rider or become contaminated
Solution Approach 1:
The invention divides the control transmission system into separate compartments within the headset, with each transmission member dedicated to a specific control cable. This segmentation allows multiple control types (brake, gear shift, etc.) to be transmitted simultaneously through the same headset without interference, while the internal detangler mechanism handles the rotational freedom requirement.
Solution Approach 2:
The invention places the detangler mechanism and multiple transmission members inside the existing headset structure, nesting the solution within the standard component. This internal placement prevents rider interference and contamination while maintaining all control transmission capabilities through the compact integrated design.
2Ease of operation
If existing internal detangler designs are used, then cable tangling is prevented, but they load the detangler eccentrically, twist and stretch cables, have high friction, and require custom headset components
Solution Approach 1:
The invention designs the transmission member to work with standard headset components, making the solution universally applicable to existing bike frames and headsets. The transmission member integrates multiple functions: it guides the cable, provides the detangler mechanism, and transmits control forces, all while兼容 standard headset dimensions and configurations.
Solution Approach 2:
The invention positions the cable entry point and transmission member to ensure balanced, eccentric-free loading. The cable enters the transmission member in a way that distributes forces evenly, preventing twisting and stretching of the cable while maintaining smooth operation of the detangler mechanism.
3Reliability
If internal detanglers are used to prevent contamination and interference, then rider safety is improved, but oversized head-tubes and headsets are required
Solution Approach 1:
The invention creates a dynamic detangler mechanism that allows controlled rotation and movement within the constrained space of a standard headset. The transmission member can rotate and adjust its position to accommodate handlebar movements beyond 180 degrees while maintaining cable tension and preventing tangling, all within the fixed dimensions of a conventional headset.
Data Source
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AI summary
Discloses methods and apparatus for headset transmissions mounted to a steerer tube rotationally mounted relative to a head-tube and headset of a cycle frame. A first transmission member mounts about a rotational axis of the steerer tube. The first transmission member rotates with the steerer tube about the rotational axis, and can also translate relative to the steerer tube to transmit a first displacement force to or from a handle bar mounted device. The first displacement force is transmitted to the first transmission member from an interior of the steerer tube. A second transmission member mounts about the rotational axis of the steerer tube. The second transmission member is rotationally isolated to rotate relative to the first transmission member, and can translate with the first transmission member. The second transmission member allows transmission of a second displacement force, from the first displacement force, to a cycle frame mounted device.