Eyebolt Bracket Assembly for Percussion Rods
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Solution Overview
Problem
Existing mounting systems for percussion instruments on rods often fail to securely hold instruments of varying diameters without reducing the holding force, particularly with smaller diameter rods due to limited contact surfaces.
Innovation Solution
An eyebolt bracket assembly comprising an eyebolt with a compression spring and a bracket, allowing the eyebolt to move perpendicular to the rod insertion axis, constrained by a fastener and arm opening, with a threaded portion and teeth or grooves on the inner surface to securely fit rods of multiple diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an eyebolt with a circular inner surface cross section is used, then the mounting bracket can accommodate rods of various diameters, but the contact surfaces between the eyebolt and the rod are reduced when the rod has a small diameter
Solution Approach 1:
The patent applies local quality by providing different cross-sectional shapes at different locations of the eyebolt. The upper portion has a circular cross section for general adaptability, while the lower portion has a D-shaped cross section with a flat inner surface that provides enhanced contact area for small diameter rods, thereby maintaining holding force across different rod sizes.
Solution Approach 2:
The patent incorporates a compression spring that allows the eyebolt to dynamically adjust its position and apply variable compression force against the rod. This dynamic mechanism ensures consistent holding force regardless of rod diameter by automatically adjusting the contact pressure based on the specific rod size being mounted.
2Reliability
If the eyebolt is constrained by a compression spring and fastener, then the holding force is maintained through variable compression, but the device complexity increases
Solution Approach 1:
The patent segments the eyebolt into distinct functional portions: an upper circular portion for adaptability, a lower D-shaped portion for enhanced contact, and an intermediate section containing the threaded hole and spring mechanism. This segmentation allows each portion to perform its specific function while keeping the overall design manageable and maintainable.
3Reliability
If the inner surface of the eyebolt opening is made flat to increase contact surface area, then the holding force improves, but the ability to accommodate rods of different diameters is reduced
Solution Approach 1:
The patent applies local quality by providing different cross-sectional shapes at different locations of the eyebolt. The upper portion has a circular cross section for general adaptability, while the lower portion has a D-shaped cross section with a flat inner surface that provides enhanced contact area for small diameter rods, thereby maintaining holding force across different rod sizes.
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 secure mounting of percussion instruments on rods of various diameters without reducing the holding force, facilitating easy mounting and dismounting by maintaining the eyebolt position and conforming to different rod sizes through the use of a compression spring and textured inner surface.
Implementation Method 1
The eyebolt may move in a direction perpendicular to the insertion axis of the rod, enabling an inner surface of the eye opening to press against an inserted rod. Movement of the eyebolt is constrained by the attached fastener, the compression spring, and the arm opening.
Implementation Method 2
The eyebolt comprises a threaded portion. The threaded portion is inserted into the compression spring. A portion of the threaded portion pass through a top side of the bracket and is held to the bracket by the fastener. The fastener may be screwed or unscrewed on the threaded portion, thereby tightening or loosening the eyebolt by increasing or decreasing the compression of the compression spring.
Data Source
AI summary
Eyebolt mounting devices are disclosed. In an aspect, the present disclosure provides an eyebolt bracket assembly for mounting a musical instrument to a rod. The assembly has a bracket having a first side having a first opening, a second side having a second opening, and a top side having a third opening. The bracket houses an eyebolt member having a threaded portion and an eye opening portion. The eye opening portion has an eye opening, an outer surface, and inner surface. A spring is disposed on the threaded portion and to apply a variable tension force to the eyebolt member. The threaded portion passes through the third opening and receives a washer and a fastener. The eyebolt member is held to the bracket by the fastener and is movable within the bracket.