Electronic Bicycle Shock Damping Without Cables

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Traditional adjustable bicycle dampers require manual operation, which is time-consuming and impractical for on-the-fly adjustments, and often involve bulky cables or tubes that add weight and are prone to damage.

Innovation Solution

The development of electronically controlled dampers with a motor-driven flow control member, allowing for wireless command signal activation to adjust damping rates without physical interaction, reducing weight and vulnerability to external hazards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual operation is used to adjust damping rates, then the adjustment can be made, but it is time-consuming and impractical for on-the-fly adjustments

Engineering Contradiction:
Improveadjustment operationVSAvoidadjustment time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the manual mechanical adjustment system with an electronic control system. A motor-driven flow control member is actuated by electronic signals received from a remote device, eliminating the need for manual cable manipulation and enabling instantaneous damping rate changes without physical contact with the damper.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The electronic control system allows the rider to adjust damping rates independently through a remote device (such as a smartphone or handheld controller), without requiring assistance from a mechanic or another person. The system serves itself by automatically translating electronic commands into mechanical adjustments of the flow control member.

Inventive Principle:
Principle #25Self-service

2Reliability

If bulky cables or tubes are used for manual adjustment, then mechanical connection is achieved, but weight is added and vulnerability to damage increases

Engineering Contradiction:
Improveconnection reliabilityVSAvoiddamper weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent eliminates the need for bulky cables or tubes by replacing the mechanical cable-driven adjustment system with an electronic signaling system. The remote device communicates with the motor controller through electronic signals, which then actuate the flow control member, thereby removing the heavy and vulnerable cable infrastructure while maintaining reliable control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the cable or tube components from the damper system. By separating the control function from the mechanical connection, the system eliminates the need for physical cables running to the damper, thereby reducing weight and eliminating the vulnerability associated with external cable exposure to damage.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of operation

If manual adjustment mechanism is exposed, then accessibility for adjustment is achieved, but vulnerability to external hazards increases

Engineering Contradiction:
Improveadjustment accessibilityVSAvoidexternal hazard exposure
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the exposed manual adjustment mechanism with a sealed electronic control system. The motor-driven flow control member is actuated remotely through electronic signals, eliminating the need for exposed adjustment ports or cable access points that would be vulnerable to dirt, water, and physical damage.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediary electronic control system between the rider and the damper mechanism. The remote device serves as a mediator that transmits adjustment commands electronically to the motor controller, which then actuates the flow control member, thereby eliminating direct exposure of the adjustment mechanism to external hazards.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enables quick, optimal damping adjustments while riding, minimizing weight and risk of damage, with electronic control devices providing instantaneous adjustments and improved rider safety.

Implementation Method 1

A flow path is defined between the first chamber and the second chamber. The example shock absorber also includes a flow control member disposed in the flow path and a motor to operate the flow control member to affect fluid flow between the first chamber and the second chamber.

Methodology Applied
Scientific EffectFluid flow control:

Implementation Method 2

An example shock absorber for a bicycle disclosed herein includes a spring and a damper configured in a telescoping arrangement with the spring

Methodology Applied
Scientific EffectSpring damping: Spring

Implementation Method 3

The example shock absorber also includes a flow control member disposed in the flow path and a motor to operate the flow control member to affect a damping rate of the shock absorber

Methodology Applied
Scientific EffectViscous damping: Viscous Damping

Data Source

PatentUS11724769B2Bicycle suspension components and electronic control devices
Publication Date: 2023.08.15 SRAM LLC
  • US11724769B2 patent drawing
  • US11724769B2 patent drawing
  • US11724769B2 patent drawing

AI summary

Example bicycle suspension components and control devices are described herein. An example shock absorber includes a damper body defining a first chamber and a reservoir defining a second chamber. A flow path is defined between the first chamber and the second chamber. The example shock absorber also includes a flow control member disposed in the flow path and a motor to operate the flow control member to affect fluid flow between the first chamber and the second chamber.