Spring Retainer Tailpiece for Tool-Free Guitar String Attachment
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Solution Overview
Problem
Conventional stringed instruments face challenges in securely attaching components like bridges and tailpieces to the guitar body, leading to movement and retuning issues when strings break or require maintenance, often necessitating specialized tools.
Innovation Solution
The use of a plurality of attachment devices and a biasing element, such as an annular spring retainer with protrusions, to securely mount instrument components like bridges and tailpieces to the guitar body without the need for additional tools, ensuring stability and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If set screws are used to threadably secure the bridge and tailpiece to the posts, then the attachment reliability is improved, but the ease of operation deteriorates due to requiring special tools
Solution Approach 1:
The spring retainer is designed to be manually installed and removed by the user without requiring any special tools. The user simply compresses the spring retainer to release or secure the post, making the system self-servicing and eliminating dependency on specialized installation tools.
Solution Approach 2:
The patent replaces the threaded mechanical fastening system (set screws requiring tools) with a spring-based elastic retention system. The spring retainer uses elastic deformation and friction to hold the post in place, substituting complex mechanical threading with simpler elastic mechanics that can be operated by hand.
2Device complexity
If the bridge and tailpiece are held in place only by string tension, then the device complexity is reduced, but the stability deteriorates when strings break or require maintenance
Solution Approach 1:
The attachment system is segmented into independent components: the spring retainer, the post, and the bracket. Each post can be independently secured or released without affecting other posts, allowing individual string maintenance while maintaining overall system stability. The segmentation enables localized adjustment without global disruption.
Solution Approach 2:
The spring retainer is pre-installed in the bracket before the post is inserted. This preliminary preparation allows the post to be quickly secured by simply pushing it into the pre-positioned retainer, and equally quickly released by compressing the pre-loaded spring. The system is prepared in advance for rapid attachment and detachment operations.
3Ease of operation
If a single spring element is used to retard entry and exit of posts, then the ease of operation is improved, but the reliability deteriorates as posts cannot be completely secured
Solution Approach 1:
The spring retainer incorporates localized engagement features including protrusions that fit into recesses on the post, and flared outer surfaces that engage the bracket walls. These local quality enhancements at critical contact points provide positive mechanical engagement and prevent post withdrawal, while the overall spring mechanism remains simple to operate.
Solution Approach 2:
The spring retainer combines multiple functional elements into a single composite component: the elastic spring body for retention, protrusions for positive engagement, and flared surfaces for lateral support. This composite design integrates multiple securing mechanisms into one element that provides both ease of operation and reliable post retention.
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
This solution provides secure, tool-free attachment and retention of instrument components, preventing movement during maintenance and repair, and allowing for efficient restringing and tuning without affecting other strings.
Implementation Method 1
a biasing element positioned in each attachment aperture wherein each biasing element engages one of the attachment devices. Each biasing element includes a plurality of protrusions wherein each protrusion biases the attachment device toward the center of the attachment aperture
Data Source
AI summary
Included herein is an instrument component for mounting to the body of an instrument having strings, for example a guitar. The instrument component comprises a plurality of attachment devices, an elongated bracket, and a biasing element. The elongated bracket includes a plurality of attachment apertures where each aperture includes a center and is shaped to accept one of the attachment devices. A biasing element is positioned in each attachment aperture wherein each biasing element engages one of the attachment devices. Each biasing element includes a plurality of protrusions wherein each protrusion biases the attachment device toward the center of the attachment aperture.