Multi-Wall Composite Bat Handle for Vibration Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Metal and composite bats used in baseball and softball have disadvantages such as vibrating upon impact, structural failure, and an undesirable sound, while traditional wood bats lack a large 'sweet spot' and efficiency in energy transfer, leading to injuries and performance disparities.
Innovation Solution
A ball bat with a multi-wall configuration in its handle and end cap sections, utilizing composite materials with strategically placed gaps to enhance the 'sweet spot' and meet the BBCOR standard, providing a continuous exterior surface and improved energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If metal bats are used to provide a large sweet spot and power, then batting performance is improved, but vibrations and structural failure occur
Solution Approach 1:
The bat is divided into multiple sections with different materials: a metal barrel section for power and a composite handle section for vibration reduction. This segmentation allows each part to perform its optimal function while mitigating the disadvantages of using metal throughout the entire bat.
Solution Approach 2:
The bat incorporates composite materials (fiberglass, carbon fiber, or other non-metallic materials) in the handle section to reduce vibrations and prevent structural failure, while maintaining metal barrel for power generation. This composite construction resolves the contradiction between performance and reliability.
2Speed
If metal bats are used to achieve faster ball exit speed, then hitting distance is increased, but vibrations cause injury
Solution Approach 1:
The bat is segmented into a metal barrel section that generates power and speed, and a composite handle section that absorbs and dampens vibrations. This allows the ball to exit at high speed while the composite handle reduces harmful vibrations transmitted to the batter's hands and arms.
Solution Approach 2:
The bat changes the material parameter along its length, transitioning from metal in the barrel to composite materials in the handle. This parameter change optimizes both ball exit speed (through metal barrel) and vibration reduction (through composite handle).
3Ease of operation
If composite bats are used to reduce weight and vibrations, then comfort is improved, but manufacturing cost and structural failure risk increase
Solution Approach 1:
Instead of making the entire bat from expensive composite materials, the design segments the bat into a metal barrel section and a composite handle section. This reduces manufacturing cost while still providing vibration reduction and comfort benefits in the handle area.
Solution Approach 2:
Composite materials are applied locally only where needed (in the handle section) rather than throughout the entire bat. This local application provides vibration reduction and comfort while minimizing manufacturing cost compared to fully composite bats.
4Object-affected harmful factors
If wood bats are used to reduce vibrations, then comfort is improved, but sweet spot size and power are reduced
Solution Approach 1:
The bat is segmented into a metal barrel section that provides a large sweet spot and power, and a composite handle section that reduces vibrations. This resolves the contradiction by assigning different functions to different sections of the same bat.
Solution Approach 2:
The bat uses composite materials in the handle section to reduce vibrations while maintaining a metal barrel section that preserves the large sweet spot and power generation capabilities of metal bats.
Data Source
AI summary
A multi-section ball bat includes a barrel, a handle and an end cap. The handle has a first end defining a grip portion and a generally opposite second end attached to the barrel. The end cap has a first end attached to an opposite end of the barrel. At least a portion of the handle may have a multi-wall configuration defined by a gap. Similarly, at least a portion of the end cap may have a multi-wall configuration defined by a gap. The gap in a wall of the handle or the end cap may be formed between layers of a multi-layer composite material forming the handle or end cap. The presence of the gap in the handle or end cap extends the sweet spot of the bat from the barrel into the handle and/or the end cap.