Drum Pedal Resilient Element Linear Return Mechanism
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Solution Overview
Problem
Conventional drum pedals suffer from inefficient return motion due to a pendulum motion of the tension spring that violates the principle of linear movement, resulting in delayed and laborious operation, and incomplete transmission of trampling force to the beater.
Innovation Solution
The drum pedal design incorporates a resilient element with a guiding groove and adjustable torque mechanism, allowing for direct and efficient transmission of trampling force to the beater through a rotating element and chain assembly, enabling responsive and sensitive operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a tension spring is used for the return mechanism, then the beater can return to the original position, but the pendulum motion causes delayed and laborious operation
Solution Approach 1:
The patent inverts the conventional tension spring arrangement by mounting the resilient element on the stationary bracket instead of attaching it to the moving pivot. This inversion eliminates the pendulum motion and creates a direct linear pull-back mechanism, significantly improving return speed and reducing the time for the beater to return to its original position.
2Ease of operation
If a tension spring with pendulum motion is used, then the return mechanism functions, but the trampling force cannot be transmitted directly and completely to the beater
Solution Approach 1:
The patent extracts the pendulum motion component from the force transmission path by repositioning the resilient element's mounting point. This removes the unnecessary rotational deviation and allows the trampling force to be transmitted directly and completely to the beater through a linear mechanism, improving both operation sensitivity and force transmission efficiency.
3Reliability
If the pivot rotates to stretch the tension spring, then the return function is achieved, but the operation becomes laborious and insensitive
Solution Approach 1:
The patent introduces a stationary mounting bracket as an intermediary element that anchors the resilient element. This mediator creates a direct force transmission path from the footboard through the chain to the pivot, eliminating the need for the pivot to rotate to stretch the spring. The result is a more sensitive and less laborious operation while maintaining reliable return function.
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
The design ensures quick and efficient return of the beater to its original position, allowing for synchronized operation with minimal effort and enhanced sensitivity in trampling, ensuring complete force transmission and adjustable damping for user preference.
Implementation Method 1
the resilient element drives the beater holder assembly and the chain assembly to return to an original position
Implementation Method 2
The cap has a slot defined through the cap longitudinally and a notch defined in the cap laterally... The guiding part protrudes from an outer surface of the abutting element, and is mounted slidably in the guiding groove
Data Source
AI summary
A drum pedal has a base, a pivoting assembly, a rotating element, a beater holder assembly, a chain assembly, and a foot board. The pivoting assembly is mounted in the base. The rotating element, the beater holder assembly and the chain assembly are mounted in the pivoting assembly. The foot board is mounted between the chain assembly and the base. The base has a resilient element mounted concentric with a shaft of the pivoting assembly. A rotating element receives the resilient element. A torque of the resilient element is evenly matched with a swing caused by the beater holder and the chain assembly. Therefore, the beater holder and the chain assembly return to the original position immediately after the swing. Two drum pedals are manipulated to play respectively, and are connected by a coupling assembly to compose a drum pedal unit.