Buckle Device Single-Finger Disengagement Mechanism
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Solution Overview
Problem
Existing buckle devices require two-handed operation to disengage the band from the buckle, making it difficult to disengage them with one hand or finger, as the resilient piece must spring in both directions simultaneously.
Innovation Solution
A buckle device with a control unit featuring a rotatable locking unit and lever unit, allowing for easy disengagement by rotating the lever to disengage the locking unit from the saw-teeth, enabling single-finger operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resilient piece is used to hook and disengage the band, then the band can be securely locked, but the user cannot readily disengage the band with one finger
Solution Approach 1:
The buckle is divided into separate functional components: a resilient piece for locking and a lever unit for disengagement. The lever unit includes a lever body and lever arm that work independently from the resilient piece, allowing the locking and disengagement functions to be separated. This segmentation enables the resilient piece to maintain secure locking while the lever provides easy one-finger disengagement capability.
Solution Approach 2:
The lever unit acts as an intermediary mechanism between the user's finger and the resilient piece. When the user presses the lever arm, it rotates the lever body, which then interacts with the resilient piece to release the locked band. This intermediary lever mechanism translates the simple one-finger pressing motion into the complex motion required to disengage the resilient piece from the band.
2Productivity
If the resilient piece must spring in both directions simultaneously, then locking and disengagement can occur, but two-handed operation is required
Solution Approach 1:
The lever body and lever arm are merged into a single integrated lever unit that rotates about a pivot. This merged structure combines the functions of lever arm (for user input) and lever body (for interacting with resilient piece) into one component, allowing a single hand to operate both functions simultaneously through rotation around the pivot point.
Solution Approach 2:
The lever unit is designed to rotate dynamically about the pivot point, transitioning between different angular positions. When the lever arm is pressed, it causes the lever body to rotate, which dynamically changes the interaction between the lever and resilient piece. This dynamic rotation enables the lever to perform multiple functions (disengaging resilient piece from band) through a single continuous motion, eliminating the need for two-handed operation.
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 effortless disengagement of the buckle and band with a single finger, improving user convenience and ease of use.
Implementation Method 1
a resilient member coupled to either one or both of the locking unit and the lever unit in order for either one or both of the locking unit and the lever unit to apply resilience in a direction of the band unit when the band unit enters or exits
Data Source
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AI summary
There is provided a buckle device for length adjustment including a band unit in which multiple saw-teeth are formed; a base unit configured to slidably guide the band unit when the band unit enters the base unit or exit therefrom; and a control unit including a locking unit and a lever unit provided in the base unit to be rotatable. Here, an end of the locking unit and an end of the lever unit are provided at both ends of the base unit, respectively and the other end of the lever unit is cross-linked with the other end of the locking unit at the both ends, so that according to rotation of the lever unit, the locking unit is engaged with or disengaged from one or more saw-teeth.