Wearable Strap Eject Pin Linkage Mechanism
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Solution Overview
Problem
The attachment or detachment of a watch strap with the watch body is inconvenient due to the use of thin spring bars, which makes the process difficult and inefficient.
Innovation Solution
A wearable device with an installation groove and a strap featuring a peg-sliding hole, a peg, and an eject pin connected via a linkage component, allowing the peg to drive the eject pin to protrude or retract, facilitating easy installation or detachment without the need for thin spring bars, and an engaging mechanism with a peg, two eject pins, and a linkage component that drives the eject pins to move oppositely for secure attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If thin spring bars are used to attach the strap to the watch body, then the device can be compact and lightweight, but the attachment or detachment process becomes inconvenient and difficult to operate
Solution Approach 1:
The attachment mechanism is divided into separate functional components: a peg that protrudes from the strap body, a linkage component with rotating sheets, and eject pins that interact with installation holes. This segmentation allows each component to perform its specific function while maintaining overall compactness and ease of operation.
Solution Approach 2:
The linkage component incorporates rotating sheets that can dynamically change position and orientation. When the peg moves, it drives the sheets to rotate, which in turn controls the eject pins to extend or retract. This dynamic mechanism enables easy strap attachment and detachment while maintaining a compact structure.
2Reliability
If protruding lugs are provided on the watch body for strap connection, then the strap can be securely attached, but the gap between the strap and watch body increases, worsening the appearance
Solution Approach 1:
The eject pins are nested within the watch body's installation holes when not in use. During attachment, the pins extend from the holes to engage with the strap's peg. This nesting approach allows secure attachment without requiring permanent protruding lugs, thereby maintaining a sleek appearance and minimizing gaps between the strap and watch body.
3Ease of operation
If a complex linkage component with multiple sheets and rotating parts is used to drive the eject pin, then the strap can be easily attached and detached, but the device complexity increases
Solution Approach 1:
Multiple functional elements are merged into a single integrated linkage component. The first and second sheets, along with their rotation axes and connection points, work together as one unified mechanism driven by the single peg. This merging reduces the number of separate parts and simplifies the overall structure while maintaining ease of operation.
Solution Approach 2:
The linkage component serves multiple functions: it converts the linear motion of the peg into rotational motion of the sheets, which then controls the extension and retraction of the eject pins. This multi-functionality allows a single mechanism to handle both attachment and detachment operations, reducing the need for separate mechanisms and lowering overall device complexity.
Data Source
AI summary
The present application relates to a wearable device, a strap, and an engaging mechanism. The wearable device includes a watch body and a strap. The strap includes a strap body, a peg, a eject pin, and a linkage component. The strap body is provided with a receiving space, and the strap body is provided with a peg-sliding hole and a first through hole. One end of the peg passes through a peg-sliding hole and the other end is located in a receiving space of a watch body; the eject pin is located in the receiving space and can pass through the first through hole; the peg is configured to drive the eject pin to pop out from the first through hole via the linkage component and engage with the installation groove; the peg is further configured to drive the eject pin to move towards the receiving space.