Skeletal Shaft Exposed Sections for Post-Assembly Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image forming apparatuses face challenges in measuring positional accuracy of units after assembly, as standard members are often obscured by other units, requiring large-scale disassembly and risking damage during the process.
Innovation Solution
The apparatus includes a pair of panels with main body skeletal structure shafts that have exposed sections serving as measuring references, allowing for positional relationship measurements between the shafts and units using a measuring instrument after assembly is complete, ensuring accurate positioning and verification without disassembling the entire apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard members are used for measuring positional accuracy after assembly, then measurement capability is provided, but the standard members are obscured by other units requiring large-scale disassembly
Solution Approach 1:
The patent extracts the standard member function from the internal skeletal structure and relocates it to an external position. The shaft protrudes from the panel outward, allowing the standard member to be accessed from the outside without disassembling internal units. This extraction resolves the contradiction by making the standard member accessible while maintaining its measurement function.
Solution Approach 2:
The patent transitions the standard member from a hidden internal dimension to an external accessible dimension. By positioning the shaft to protrude from the panel, the standard member becomes available in the external space, enabling measurement operations without requiring disassembly of internal components.
2Measurement precision
If large-scale disassembly is performed to access standard members, then measurement can be performed, but risk of damage to units increases
Solution Approach 1:
The standard member is extracted from the internal assembly and positioned externally on the shaft. This allows measurement operations to be performed without disassembling internal units, thereby eliminating the risk of damage while maintaining measurement capability.
Solution Approach 2:
The shaft is pre-configured with protruding ends that serve as accessible standard members before assembly is completed. This preliminary positioning ensures that measurement can be performed immediately after assembly without requiring subsequent disassembly, preventing damage to units.
3Stability of the object's composition
If standard members are positioned internally in the skeletal structure, then structural integration is achieved, but measurement accessibility is lost
Solution Approach 1:
The shaft is segmented into portions: an internal portion integrated into the skeletal structure and an external protruding portion serving as the standard member. This segmentation allows the shaft to maintain structural integration while providing external accessibility for measurement operations.
Solution Approach 2:
The shaft serves multiple functions: it provides structural support as part of the skeletal structure and simultaneously serves as a positioning standard for measurement. By making the shaft multi-functional, the patent eliminates the need for separate standard members while maintaining both structural integrity and measurement capability.
Data Source
AI summary
An image forming apparatus for forming an image on a sheet, includes: a pair of panels which constitute a main body skeletal structure of the image forming apparatus and face each other; a main body skeletal structure shaft which connects between the pair of panels and is fixed to each of the pair of panels; and a unit which is installed between the pair of panels and needs positioning based on the main body skeletal structure shaft, wherein an exposed section which is provided on the main body skeletal structure shaft and serves as a measuring reference position for a measuring instrument when a positional relationship between the main body skeletal structure shaft and the unit is measured by use of the measuring instrument after completing assembling of the image forming apparatus.