Showcase Shelf Roller Frame Assembly for Multi-Unit Alignment
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Solution Overview
Problem
The existing shelf for showcases has high expenses related to raw materials and machining due to complex manufacturing processes, and it is difficult to assemble multiple roller units without distortion, limiting the alignment of roller units to only one or two lines.
Innovation Solution
The shelf is redesigned with a separation of fixing frames and connection frames, allowing for simpler assembly and use of single or multiple roller units, reducing material costs and eliminating the need for machining ventilation holes, while enabling alignment of up to six roller units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the casing is formed by continuous extrusion as a single element, then the structural integrity is improved, but the raw material expense and machining cost increase
Solution Approach 1:
The casing is divided into multiple separate components (side walls, bottom surface, end caps) that can be manufactured independently through injection molding, then assembled together. This segmentation allows each component to be optimized for its specific manufacturing process, reducing overall production cost while maintaining structural integrity through proper connection design.
2Area of stationary object
If multiple roller units are aligned in the casing, then the sliding area is increased, but the casing size and complexity increase causing distortion during extrusion
Solution Approach 1:
The casing is segmented into modular components that can accommodate multiple roller units without requiring a single large extrusion. The side walls and bottom surface are separate pieces that can be manufactured to precise dimensions and assembled, eliminating distortion issues while providing the necessary sliding area for multiple rollers.
Solution Approach 2:
Instead of increasing the length of a single extruded casing, the design uses multiple separate components arranged in a modular fashion. This dimensional reorganization allows multiple roller units to be supported without the constraints of continuous extrusion, enabling greater flexibility in accommodating increased sliding area.
3Adaptability or versatility
If the casing is cut by predetermined length, then the assembly flexibility is improved, but the machining precision and finishing quality deteriorate
Solution Approach 1:
The casing is designed as multiple separate injection-molded components rather than a single cut piece. This segmentation provides inherent flexibility for assembly configurations while maintaining the manufacturing precision of injection molding, eliminating the need for post-extrusion cutting and finishing operations.
Data Source
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AI summary
The present invention relates to a shelf for a showcase, in which the roller unit is formed with holding grooves on both sides of a bottom surface of the roller plate, and each of the fixing frames includes a bottom part formed with a vertical rib to be fitted into the holding groove of the roller plate, and a vertical wall surrounding an outside of the roller plate and formed with a horizontal rib closing opened parts of fitting grooves of the roller plate, so that the fixing frames are mounted on both sides of the roller plate of the roller unit in pair correspondingly to each other, wherein the vertical walls are formed with screw-coupling holes at front and rear ends in accordance with screw holes punched at both side walls of the end caps so as to be integrally coupled together by coupling screws.