Movable Display for Sewing Machine Stitch Space
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Solution Overview
Problem
Conventional sewing machines face challenges in accommodating large-sized displays due to limited space on the arm or standard, which restricts the enlargement of the display and interferes with stitch working operations.
Innovation Solution
A sewing machine design that includes a movable display which can retract into a defined area of the machine body, allowing the display to be compactly stored when not in use and moved to a position that maximizes stitch working space without obstructing the operation area, utilizing a sliding mechanism guided by a rail and driven by a motor with microswitch control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a large-sized display is provided on the machine body, then the display area is enlarged, but the stitch working space is reduced
Solution Approach 1:
The display is made movable rather than fixed, allowing it to switch between a retracted position (storing in the retreat area) and an extended position (for viewing and operation). This dynamic configuration enables the display area to be enlarged without permanently occupying stitch working space, as the display can be moved out of the way when not in use.
Solution Approach 2:
The display is arranged to move in a direction substantially perpendicular to the front surface of the machine body, utilizing the depth dimension (retreat area) rather than only the front surface area. This allows the display to be stored compactly within the machine body's depth while still providing a large display area when extended.
2Ease of operation
If the display is fixed on the front surface, then the display is easily accessible, but the stitch working space is obstructed
Solution Approach 1:
The display's movable configuration allows it to be positioned in two distinct states: retracted into the machine body for unobstructed stitch working space, and extended forward for easy viewing and button access. This dynamic positioning resolves the conflict between accessibility and space obstruction.
Solution Approach 2:
The display can be nested within the machine body's retreat area when not in use, similar to how smaller objects are stored within larger containers. This nesting approach allows the display to be kept accessible (within reach) while not obstructing the external stitch working space.
3Area of stationary object
If the display is made movable, then the stitch working space is maximized, but the device complexity increases
Solution Approach 1:
The display's movement is achieved through a motor-driven mechanism rather than complex manual adjustment systems. This substitution of mechanical systems with motorized control simplifies the overall mechanism while still achieving the desired movable functionality, reducing the complexity burden.
Solution Approach 2:
The display movement mechanism appears to be automatically controlled, where the display moves itself between retracted and extended positions based on operational needs, eliminating the need for complex manual adjustment mechanisms and reducing overall system complexity.
Data Source
AI summary
Sewing machine provided with an indication device including a display that is so large that the lower leftward portion protrudes into the stitch working area of the machine. The display may be moved up and down by of a switch and may be moved up until the lower end side of the display aligns with the lower end side of the machine arm and may be stopped at an upper optional position. At the lowest position, the upper end side of display has the upper side located in alignment with the top side of machine body and has the front side plane planar with the front side of the arm and has the lateral end side planar with the lateral end side of the machine body. The display has no part protruding from the machine body at the lowest position, and is thus placed compactly in the machine frame of machine body.