Lockable Knocker Bell for Mountain Biking Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing alerting bells for mountain biking, such as those with triggers or knocker bells, require hand removal from the handlebars to produce sounds, posing safety issues and lack a method to disable ringing when not needed, especially on inclines.
Innovation Solution
A cylindrical bell with a spring-loaded elongated member and a disc-shaped knocking portion that can be locked into grooves on the rim perimeter to prevent sound production, allowing easy activation and deactivation by moving the knocker within the bell's interior space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a trigger bell is used to alert others on the trail, then the alerting function is activated, but the cyclist must remove his hand from the handlebars which creates a safety issue
Solution Approach 1:
The bell is designed to be activated by the knocker's movement during normal cycling operations, allowing the bell to alert others without requiring the cyclist to deliberately remove their hand from the handlebars. The knocker can be positioned to strike the bell body during natural handlebar movements or adjustments.
2Productivity
If a knocker bell is used that can be activated by moving the knocker, then repeated sounds can be made, but there is no way to stop it from ringing when not needed
Solution Approach 1:
The bell incorporates a dynamic locking mechanism where the knocker can be positioned in different states - free to move for repeated alerting sounds, or locked in place to disable the ringing function entirely. This allows the bell to adapt between continuous alerting mode and silent mode based on trail conditions.
Solution Approach 2:
The locking mechanism extracts the harmful aspect of unwanted ringing by providing a positive stop position where the knocker is physically prevented from striking the bell body, effectively removing the alerting function when not needed.
3Reliability
If the cyclist removes his hand from the handlebars to activate the bell, then the alerting function works, but prolonged hand removal creates safety issues
Solution Approach 1:
The bell mechanism is pre-positioned and spring-loaded so that minimal movement of the handlebars or knocker is sufficient to activate the alerting function. The spring mechanism stores energy that is quickly released upon activation, producing the alerting sound with brief hand movement rather than prolonged removal.
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 and safe alerting without prolonged hand removal from the handlebars and allows for easy disabling of the bell's sound, enhancing safety by preventing unwanted ringing during uphill trails.
Implementation Method 1
an elongated member having a first end and a second end, said first end being attached to said bottom of said closed top whereby said elongated member moves freely in said interior space and whereby said elongated member is spring loaded thereby allowing said elongated member to extend below said rim perimeter of said open bottom
Data Source
AI summary
A device and method is disclosed that provides an alerting bell that can be quickly and easily disabled when desired. The bell includes a knocker portion inside a cylindrical body that is spring loaded so that it can be pulled below the bottom rim of the cylindrical body of the bell. The knocker portion and the bottom rim of the bell are modified so that the bottom portion of the knocker portion can be securely affixed to the rim of the cylindrical main body as needed to turn off the alerting function of the bell as desired.