Interior Projecting Members for Large Apparatus Door Handling

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Solution Overview

Problem

Large-sized image forming apparatuses face challenges in holding and assembling large doors due to their size, and existing locking mechanisms are inconvenient for users to grasp, especially when dealing with heavy-weight covers.

Innovation Solution

The integration of projecting members on the inside surface of the door, which are graspable by users, allowing for easier handling and assembly of the door by balancing the weight and moments of rotation, thereby reducing user effort and preventing malfunctions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking portion is provided on the inside surface of the door for preventing the door from being opened during operation, then the door can be securely locked, but the locking portion is not graspable by users making it inconvenient for opening and closing

Engineering Contradiction:

Improvedoor locking reliabilityVSAvoiddoor opening and closing ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The door structure is segmented into two functional parts: a locking portion for securing the door during operation, and a separate grasping portion for user handling. This segmentation allows each part to optimize its specific function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The grasping portion acts as an intermediary element between the user and the door's locking mechanism. It provides a user-friendly interface for opening and closing the door without interfering with the locking portion's security function.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Area of stationary object

If the door size is increased to cover large components in the main body, then the coverage and protection are improved, but the door becomes heavy and difficult to hold and assemble

Engineering Contradiction:

Improvedoor coverage areaVSAvoiddoor handling ease

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The grasping portion serves as a mediator that reduces the effective weight perception for users. By providing a dedicated handling interface, it makes it easier to manipulate large, heavy doors during assembly and maintenance operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The door structure incorporates self-service features by including an integrated grasping portion that enables users to easily handle the door without requiring additional tools or assistance, despite the door's large size and weight.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12436491B2Electronic apparatus with projecting member projecting from inside surface of door toward interior of apparatus body

Publication Date: 2025.10.07 KYOCERA DOCUMENT SOLUTIONS INC

AI summary

An electronic apparatus includes a main body, a door, and a projecting member. The door is attached to the main body to be openable and closable with respect to the main body and covers components contained in the main body. The projecting member projects from an inside surface of the door toward an interior of the main body. The projecting member is graspable by a user.