Adjustable Flex Rod Connection for Ball Bats
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Solution Overview
Problem
Existing ball bats do not offer adjustable or customizable flexibility and shock-attenuating characteristics, leading to a trade-off between bat speed and player comfort, as more flexible handles absorb vibration but reduce performance, while stiffer handles improve performance but increase shock transmission.
Innovation Solution
A modular ball bat design featuring a flexible rod element between the barrel and handle portions with releasable connectors, allowing for adjustable flex and customizable shock reduction, vibration absorption, and whip effect, enabling interchangeable components for tailored performance and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a more flexible bat handle is used, then bat speed is increased due to increased whip effect, but overall performance (batted ball speed) decreases due to energy absorbed when the bat flexes during impact
Solution Approach 1:
The bat is divided into separate barrel section and handle section connected by a flexible rod element, allowing independent optimization of each section's stiffness characteristics
Solution Approach 2:
The flexible rod element's flexural rigidity can be adjusted by changing its length, diameter, or material properties to achieve desired balance between whip effect and energy retention
2Object-affected harmful factors
If a more flexible bat handle is used, then shock or vibration to the player's hands is reduced, but overall performance (batted ball speed) decreases
Solution Approach 1:
The flexible rod element acts as an intermediary between the barrel and handle, selectively filtering vibration frequencies to reduce harmful shock while maintaining impact energy transfer
Solution Approach 2:
By adjusting the flexural rigidity parameters of the rod element, the vibration attenuation characteristics can be optimized to reduce shock transmission while preserving impact energy
3Loss of energy
If a stiffer or less flexible bat handle is used, then overall performance (batted ball speed) is improved, but shock or vibration to the user's hands increases
Solution Approach 1:
Separating the bat into modular sections with a flexible connection allows the handle to remain stiff for energy transfer while the rod element independently absorbs vibration
Solution Approach 2:
The rod element serves as a vibration isolation intermediary that protects the user's hands from shock while allowing the barrel to maintain stiff connection for energy transfer
4Ease of manufacture
If existing two-piece ball bats with fixed flex characteristics are used, then manufacturing is simplified, but adaptability to different player preferences is reduced
Solution Approach 1:
The rod element's effective length can be dynamically adjusted by moving the connectors along the rod, allowing players to customize flex characteristics without changing the basic modular structure
Solution Approach 2:
The modular design with standardized connectors allows a single rod element to serve multiple functions by adjusting connector positions, accommodating different player preferences without requiring multiple specialized components
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 modular design enhances player comfort by reducing shock and vibration while maintaining or improving bat speed, allowing players to customize the bat's flexibility and performance to suit individual preferences.
Implementation Method 1
A more flexible bat handle may absorb more vibration and shock, resulting in less discomfort
Implementation Method 2
the impact causes waves of vibration in the bat or hitting implement that can transfer through the handle to a player's hands, which is felt as shock or sting
Implementation Method 3
A flexible bat handle may provide an increased whip effect within the bat itself relative to a less flexible handle
Implementation Method 4
a more flexible bat handle may also decrease overall performance (batted ball speed) due to energy absorbed when the bat flexes during impact
Data Source
AI summary
A ball bat includes a barrel portion, a handle portion, and a joint connecting the handle portion to the barrel portion. In some embodiments, the joint includes a releasable connector configured to releasably connect the barrel portion to the handle portion. In some embodiments, the joint includes two releasable connectors to releasably connect the barrel portion to the handle portion. The ball bat may include a flexible rod element positioned between the two releasable connectors. The rod element may include an elastomeric material. In some embodiments, the ball bat may further include a safety connector between the barrel portion and the handle portion or a releasable connector may include a threaded connection to resist release of the releasable connector. In some embodiments, the joint may include a rotatable element for adjusting flex.