Sewing Machine Wide Table Mounting for Large Workpiece Support
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Solution Overview
Problem
Existing sewing machines face reduced convenience when sewing workpieces larger than the bed surface, especially when an embroidery device or auxiliary table is attached.
Innovation Solution
A sewing machine design that includes a bed with mount portions for attaching auxiliary devices and wide tables, allowing expansion of the sewing surface by integrating a wide table with a second extension surface, and a lever and lock release mechanism for easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an embroidery device or auxiliary table is attached to the sewing machine, then the sewing machine can perform embroidery or auxiliary sewing functions, but the convenience when sewing workpieces larger than the bed surface is reduced
Solution Approach 1:
The bed is divided into multiple mount portions (first mount portion and second mount portion) located at different positions (front side and rear side) to allow independent attachment of different devices. This segmentation enables the embroidery device to be attached at the front while maintaining the ability to attach a wide table at the rear, resolving the conflict between embroidery functionality and large workpiece sewing convenience.
Solution Approach 2:
The invention introduces a spatial dimension solution by providing mount portions at multiple locations along the bed structure. Instead of having only one attachment location, the system uses distributed mount portions that allow devices to be attached at different positions, thereby expanding the effective working area without compromising the original bed surface functionality.
2Area of stationary object
If the bed surface is expanded by attaching a wide table, then the sewing surface area increases, but the device complexity increases
Solution Approach 1:
The mount portions are designed with universal engagement edges that can accommodate different types of attachments (embroidery devices, auxiliary tables, or other accessories). This multi-functionality reduces device complexity by using a single standardized interface rather than requiring separate specialized mounting mechanisms for each device type.
Solution Approach 2:
The engagement mechanism includes movable components (engaging edges that can move between engaged and disengaged states) allowing the wide table to be easily attached and detached. This dynamic design simplifies the overall structure compared to fixed or permanent attachment systems, enabling flexible configuration without increasing complexity.
3Adaptability or versatility
If a wide table is detachably attached to the bed, then the sewing machine can be kept compact when not in use, but the attachment and detachment operations become more complex
Solution Approach 1:
The engagement mechanism is designed to be self-aligning and self-latching. The engaging edges automatically engage with the mount portion when the wide table is positioned correctly, and the locking portion automatically locks when the engaging edges are engaged. This self-service mechanism eliminates the need for complex manual alignment or multiple-step attachment procedures.
Solution Approach 2:
The engagement edges act as intermediary components between the wide table and the bed. These dedicated engagement edges simplify the attachment operation by providing a clear, direct mechanical interface that guides the assembly process and ensures proper alignment, reducing the operational complexity of attachment and detachment.
Data Source
AI summary
A sewing machine includes a bed including a bed surface extending horizontally. A first side plate extends downward from a part of an outer periphery of the bed surface. The first side plate crosses a longitudinal direction of the bed surface. A second side plate extends downward from another part of the outer periphery of the bed surface. The second side plate crosses a short direction of the bed surface. An auxiliary device is attachable to a first mount portion. The first mount portion is provided at the first side plate. The auxiliary device includes a first extension surface extending horizontally. A wide table is attachable to a second mount portion. The second mount portion is provided at the second side plate. The wide table includes a second extension surface extending horizontally. The wide table has a different shape from the auxiliary device.