Circular Stitcher Movable Base Repositioning Mechanism
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Solution Overview
Problem
Conventional circular stitchers for sewing machines face difficulties in repositioning the movable base for adjusting the size of circular stitches, lacking user-friendly operation due to the absence of a handle, which complicates precise positioning and attachment/detachment of the pin.
Innovation Solution
A circular stitcher design featuring a movable base with a lock element and an operation element that allows finger-operated movement, enabling easy adjustment of the pin's position and secure attachment/detachment, enhancing user operability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the circular stitcher uses a planar movable base structure, then the clearance between the circular stitcher and needle plate is reduced, but the user finds it difficult to reposition the movable base without a handle
Solution Approach 1:
An operation element (handle) is introduced as an intermediary component between the user and the movable base. This handle protrudes from the upper surface of the movable base, providing a convenient grip point for users to easily reposition the movable base laterally without requiring direct manipulation of the base structure itself.
2Stability of the object's composition
If the pin is securely attached to the movable base, then the positioning stability is improved, but the attachment and detachment process becomes more complex
Solution Approach 1:
The lock element is designed to automatically engage with the engagement portion of the pin when the pin is inserted into the holder, providing self-locking functionality. This eliminates the need for complex manual locking mechanisms while ensuring secure attachment. The lock element can be released by a simple operation of the operation element, allowing easy detachment when needed.
Data Source
AI summary
A circular stitcher including a main base attachable to an upper surface of a sewing machine bed or to an upper surface of a needle plate; a movable base provided at the main base so as to be movable in a predetermined direction; a pin including a needle capable of piercing the workpiece cloth and having an engagement portion, and a holder that holds a base end of the needle; a lock element that is provided at the movable base and that locks and unlocks the engagement portion of the needle; and an operation element that is provided at the movable base and that allows a finger operation of the movable base in the predetermined direction by a user.