Drumstick with Axial Cavity for Vibration Control
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Solution Overview
Problem
Conventional drumsticks made of wood suffer from splintering, non-uniform fiber direction, humidity-induced bending, and uncontrolled gravity centers, while synthetic resin sticks lack vibration sensitivity and tone expression, requiring multiple sticks and toms for varied performances.
Innovation Solution
A drumstick design featuring a synthetic resin first rod-like portion with a cavity extending along its axial length, allowing for controlled resonance frequency adjustment, combined with a wood or synthetic resin second rod-like portion for enhanced vibration transmission and customizable gravity center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drumsticks are made of synthetic resin to eliminate splintering and improve durability, then reliability and durability are improved, but vibration transmission sensitivity deteriorates
Solution Approach 1:
The drumstick employs different materials for different portions: the tip (first rod-like portion) is made of synthetic resin for durability and resistance to splintering, while the handle (second rod-like portion) is made of wood for excellent vibration transmission. This local differentiation allows each part to perform its optimal function without compromise.
Solution Approach 2:
The drumstick combines synthetic resin and wood materials in a single structure. The synthetic resin portion provides durability and eliminates splintering, while the wood portion provides excellent vibration transmission. This composite approach resolves the contradiction by leveraging the complementary properties of different materials.
2Ease of manufacture
If drumsticks are made of wood to achieve natural feel and vibration transmission, then vibration transmission is improved, but reliability deteriorates due to splintering and cracking
Solution Approach 1:
The drumstick is divided into two functional segments: the tip portion made of synthetic resin for durability and the handle portion made of wood for vibration transmission. This segmentation allows each material to be used where it performs best, preventing the entire drumstick from suffering the weaknesses of wood.
Solution Approach 2:
By creating a composite structure combining synthetic resin and wood, the drumstick achieves both the durability of synthetic materials and the vibration transmission properties of wood, eliminating the need to choose one material over the other.
3Adaptability or versatility
If multiple drumsticks and toms are prepared to achieve varied tones and expressions, then adaptability is improved, but device complexity and loss of time increase
Solution Approach 1:
The drumstick incorporates adjustable features including a movable cavity position and variable cavity volume that can be modified during use. The cavity can be positioned at different locations along the drumstick and adjusted in volume to change resonance characteristics, allowing a single drumstick to produce varied tones and expressions dynamically.
Solution Approach 2:
The drumstick is designed to perform multiple functions: it can produce different tones by adjusting the cavity, work with different drum sizes, and adapt to various musical styles. This multi-functionality eliminates the need for multiple specialized drumsticks and toms, reducing complexity while maintaining versatility.
4Ease of manufacture
If the cavity is made larger to improve vibration resonance, then vibration transmission is improved, but the drumstick becomes more susceptible to breakage
Solution Approach 1:
The cavity is strategically positioned in the tip portion of the drumstick where it can effectively resonate vibrations without compromising the overall structural strength. The local placement allows vibration enhancement while the remaining material provides sufficient strength to prevent breakage.
Solution Approach 2:
The cavity volume and position can be adjusted as parameters to optimize the balance between vibration resonance and structural strength. By carefully controlling these parameters, the drumstick achieves excellent vibration transmission while maintaining adequate breakage resistance.
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 a more sensitive performance with improved vibration and tone matching, allowing for varied tone expression and dynamic range without needing multiple sticks or toms, while minimizing material consumption and environmental impact.
Implementation Method 1
a resonance frequency generated at the time of beating with the drumstick can be controlled by suitably changing a shape and a size of the cavity defined in the first rod-like portion
Data Source
AI summary
Provided is a drumstick being excellent in durability and enabling a drum performer to achieve a more sensitive performance with vibration transmitted to the drumstick. A drumstick includes: a first rod-like portion, which is made of a synthetic resin, and includes a tip and a shoulder; and a second rod-like portion, which is coupled to the first rod-like portion, and includes a grip, wherein the first rod-like portion has a cavity defined therein so as to extend along an axial direction and over an entire length of the first rod-like portion, and wherein the cavity is open to an outside at an opening portion formed at a distal end of the tip.