Metal Bracket for Resin Frame Attachment in Image Forming Apparatus
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Solution Overview
Problem
The mechanical strength of resin frames in existing image forming apparatuses is insufficient, particularly where units are firmly attached, leading to potential structural weaknesses.
Innovation Solution
Incorporating a metal bracket with higher stiffness than the resin frame to enhance the mechanical strength of the attachment points for the sheet discharge unit, which includes a bracket with specific design features such as through-holes and cover portions to securely attach the sheet discharge unit to the main body, thereby distributing loads and preventing structural deformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a resin frame is used for the main body, then the apparatus achieves lightweight construction and ease of manufacture, but the mechanical strength at attachment points becomes insufficient
Solution Approach 1:
The invention combines resin and metal materials to create a composite structure. The main body frame remains resin for lightweight construction and ease of manufacture, while metal brackets are attached at critical attachment points to provide the necessary mechanical strength. This composite approach allows each material to be used where its properties are most beneficial.
Solution Approach 2:
Instead of making the entire frame from metal, the invention applies metal brackets only at specific locations where attachment strength is needed. This localized reinforcement maintains the overall lightweight and easy-to-manufacture resin construction while providing targeted strength enhancement at critical points.
2Strength
If metal brackets are added to enhance strength, then the mechanical strength at attachment points is improved, but the device complexity increases
Solution Approach 1:
The metal brackets are integrated with the resin frame through a unified design where the brackets are positioned to work together with the frame structure. The brackets are attached at locations that leverage the existing frame geometry, creating a cohesive assembly rather than adding separate, complex components.
Solution Approach 2:
The metal brackets serve multiple functions: they provide mechanical strength at attachment points, serve as mounting surfaces for the sheet discharge unit, and maintain structural integrity during operation. This multi-functionality reduces the need for additional specialized components.
Data Source
AI summary
An image forming apparatus including an image forming unit, a main body including a first discharge tray configured to receive a sheet conveyed out from the image forming unit, and a resin frame, the main body being configured to support a sheet discharge unit attached thereto, the sheet discharge unit including a second discharge tray configured to receive a sheet conveyed out of the main body through the image forming unit, and an insertion member, a metal bracket attached to the frame, the bracket having an opening into which the insertion member of the sheet discharge unit is inserted when the sheet discharge unit is attached to the main body.