Embroidery Frame with Automatic Angle Locking Mechanism
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Solution Overview
Problem
The existing embroidery frames require users to manually adjust the pair of embroidery frames with respect to the outer frame by referencing triangular marks and scale marks, which can be burdensome and inefficient.
Innovation Solution
The proposed embroidery frame consists of an inner frame, a middle frame, and an outer frame, with engaging portions that allow the middle frame to be easily locked at predetermined rotation angles, using a mechanism with first and second edge engaging portions and a coil spring to simplify the adjustment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the embroidery frame uses scale marks and triangular marks for angle adjustment, then the angle can be adjusted with visual reference, but the adjustment process becomes burdensome and time-consuming for the user
Solution Approach 1:
The engaging portion automatically aligns and locks the middle frame at predetermined rotation angles relative to the outer frame without requiring user intervention for visual measurement. The mechanism self-adjusts to precise angular positions through the engagement of protrusions with corresponding recesses, eliminating the need for users to read and interpret scale marks.
Solution Approach 2:
The engaging portion acts as an intermediary mechanism between the middle frame and outer frame, providing automatic angular alignment. The protrusion-recess structure serves as a mediator that translates the rotation motion into precisely locked angular positions, removing the need for direct user measurement and manual positioning.
2Adaptability or versatility
If the embroidery frame allows manual rotation to any angle, then the user has flexibility in positioning, but the adjustment process becomes complex and requires constant reference to scale marks
Solution Approach 1:
The continuous rotation range is segmented into discrete predetermined angular positions through the engaging portion mechanism. The middle frame can still rotate freely within the overall range, but automatic locking occurs at specific angular intervals defined by the spacing of protrusions and recesses, providing both flexibility and precision without complex adjustment procedures.
Solution Approach 2:
The system transitions from a static fixed-position design to a dynamic multi-position locking mechanism. The middle frame can rotate continuously but is automatically locked at predetermined angles by the engaging portion, allowing the system to adapt between free rotation and precision positioning as needed without requiring complex manual intervention.
Data Source
AI summary
An embroidery frame comprises an inner frame, wherein the inner frame is a circular form. The embroidery frame comprises a middle frame configured to be detachably attachable to the inner frame, wherein the middle frame is a circular form, an inside diameter of the middle frame is longer than an outside diameter of the inner frame, and the inner frame is configured to be mountable in the middle frame. The embroidery frame comprises an outer frame configured to rotatably hold the middle frame, wherein the outer frame is a circular form, an inside diameter of the outer frame is longer than an outer outside diameter of the middle frame, and the middle frame is configured to be mountable in the outer frame. The embroidery frame comprises an engaging portion configured to cause the middle frame to engage with the outer frame at a predetermined rotation angle.