Frame coupling structure for recording device rigidity
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Solution Overview
Problem
Existing frame coupling structures in recording devices, such as those described in JP-A-8-326719, are prone to deformation due to insufficient rigidity when subjected to impacts, as the fixing position of the side frames relative to the main frame does not provide adequate support at the point of intersection.
Innovation Solution
A frame coupling structure is designed with a main frame and side frames where the side frames include a first frame portion extending in one direction and a second frame portion extending from it, with the second frame portion being in surface contact with the main frame and fixed at a position where it overlaps with the first frame portion, enhancing the rigidity by aligning the abutting and fixing portions on a straight line, and incorporating a bending process to form the frame portions from a single sheet metal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the side frame is fixed to the main frame at a position separated from the intersection point, then the assembly is easier to manufacture, but the rigidity of the frame structure is insufficient and deformation occurs under impact
Solution Approach 1:
The side frame is designed with a L-shaped configuration consisting of a first frame portion extending in a first direction and a second frame portion extending in a second direction perpendicular to the first direction. This dimensional change allows the frame to provide support at the intersection point while maintaining ease of assembly through standard fixing methods.
Solution Approach 2:
The side frame is divided into two distinct portions: a first frame portion that extends in the first direction and a second frame portion that extends in the second direction. This segmentation allows each portion to independently provide structural support in its respective direction, enhancing overall rigidity while maintaining manufacturing simplicity.
2Device complexity
If the side frame is fixed at a position separated from the intersection point, then the design is simpler, but the frame deforms under impact due to insufficient rigidity
Solution Approach 1:
By introducing a L-shaped configuration with portions extending in perpendicular directions, the structure gains dimensional advantage without significantly increasing complexity. The first frame portion and second frame portion work together to provide comprehensive support at the intersection point, improving reliability while maintaining design simplicity.
Solution Approach 2:
The second frame portion is specifically positioned to overlap with the first frame portion at the intersection point, creating a localized area of enhanced rigidity. This local quality enhancement targets the critical intersection point where impact forces are most likely to cause deformation, improving reliability without requiring complex structural changes throughout the entire frame.
Data Source
AI summary
A main frame extending in a first direction, a side frames extending in a second direction that intersects with the first direction, the side frames being fixed to the main frame, and a supported member extending in the first direction and supported by the side frame are included, wherein the side frame includes a first frame portion extending in the second direction and a second frame portion extending from the first frame portion in the first direction, the second frame portion being in surface contact with the main frame, and in plan view from the second direction, an abutting portion that abuts the main frame is provided at the first frame portion and a fixing portion is provided at the second frame portion, the fixing portion being fixed to the main frame at a position where the second frame portion overlaps with the first frame portion.