Captive Spring-Bar Attachment System for Tool-Free Accessory Retention
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Solution Overview
Problem
Consumer products often lack user-friendly attachment systems, requiring special tools or professional assistance for attaching and removing accessories, such as bands from watches or lanyards from electronic devices.
Innovation Solution
A captive locking mechanism with spring-bar components and a release mechanism, integrated into the accessory or product-side attachment assembly, allows for tool-less attachment and detachment by sliding engagement and disengagement within recesses and channels, using springs to bias components for secure retention and easy release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional pin-based attachment systems are used, then secure retention of accessories is achieved, but special tools and professional assistance are required for attachment and removal
Solution Approach 1:
The attachment system is divided into separate functional components: a pin element for retention, a captive head with opening for tool-free manipulation, and a release mechanism. This segmentation allows each component to perform its specific function while enabling overall tool-free operation for the user.
Solution Approach 2:
The captive head acts as an intermediary between the pin and the user's fingers. The opening in the head provides a interface that allows user manipulation without requiring special tools, while still maintaining the secure retention function of the pin.
2Reliability
If accessories are securely attached to consumer products, then product durability and stability are improved, but user-friendly removal and replacement become difficult
Solution Approach 1:
The attachment system transitions from a static pinned state to a dynamic state where the pin can be easily released. The spring-loaded plunger mechanism allows the system to switch between securely retaining the accessory and enabling easy removal through user activation of the release button.
Solution Approach 2:
The release mechanism is designed to be self-operating through user input. Pressing the release button automatically activates the plunger to disengage the pin, eliminating the need for external tools or professional assistance for accessory removal.
3Ease of operation
If simple attachment mechanisms are used, then ease of attachment is improved, but secure retention and durability are compromised
Solution Approach 1:
The pin is pre-loaded into the captive head with the spring already compressed and ready to exert retention force. When the accessory is inserted, the pin automatically engages without requiring additional tightening or tool intervention, providing both ease of attachment and secure retention.
Solution Approach 2:
The spring-loaded plunger changes its physical state from compressed to extended based on the engagement state. When the release button is pressed, the plunger extends to push the pin out, changing the retention parameter from high (engaged) to low (disengaged) state.
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, intuitive, and tool-free attachment and detachment of accessories to consumer products, enhancing user convenience and product durability while maintaining a low profile.
Implementation Method 1
A first spring may be coupled between the spring bar and the ramp member. The first spring may bias the ramp member away from the spring bar. A second spring may be coupled between the ramp member and the catch member. The second spring may bias the catch member away from the ramp member.
Data Source
AI summary
Embodiments described herein may be directed to an attachment system for coupling an accessory or component to a consumer product. The attachment system may include a captive locking mechanism that may be incorporated with the accessory or non-product side attachment assembly. The captive locking mechanism may include one or more spring-bar components that retain the engagement mechanism in a recess or feature formed in a component of the accessory. The attachment system may also include a release mechanism that may be incorporated with the product-side attachment assembly of a consumer product. The release mechanism may be captive or otherwise retained in the body of the device and may include one or more spring-bar components that retain the release mechanism in a recess or featured formed into the body of the device.