Image-Forming Apparatus Speaker Housing for Low-Frequency Sound Isolation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing image forming apparatuses face challenges in effectively transmitting low-pitched sounds due to interference between sound waves emitted from the front and rear surfaces of the speaker body, making it difficult for users to hear these sounds clearly.

Innovation Solution

A compartmentalization structure is implemented within the housing, separating the space on the front and rear surfaces of the speaker body using a frame-shaped rib and buffer material, which minimizes interference and enhances the transmission of low-pitched sounds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the first cover is attached to the second cover forming a housing with the speaker body inside, then the device has a compact integrated design, but sound wave interference occurs between front and rear surfaces of the speaker body making low-pitched sounds difficult to hear

Engineering Contradiction:
Improvecompact designVSAvoidsound wave interference
Core Design Contradiction:
Volume of moving objectVSObject-generated harmful factors

Solution Approach 1:

The housing is segmented into a first space on the front surface side of the speaker body and a second space on the rear surface side, separated by a partition wall. This segmentation prevents sound wave interference between the front and rear surfaces while maintaining the compact integrated design of the device.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the speaker body is held inside the housing between the first cover and second cover, then the speaker is protected and integrated into the device, but access to the speaker for replacement or maintenance becomes difficult

Engineering Contradiction:
Improvespeaker protectionVSAvoidspeaker accessibility
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The housing is divided into a first cover and a second cover that can be detached from each other. The speaker body is held on the second cover side inside the housing. This segmentation allows the second cover to be detached for easy access to the speaker body for replacement or maintenance, while the speaker remains protected when the covers are assembled.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The speaker body is extracted from the interior of the housing and mounted on the second cover. This extraction allows the speaker to be easily accessed by detaching the second cover, while still being protected when the cover is attached to the housing.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of repair

If the first cover is made detachable from the second cover, then the speaker body becomes accessible for maintenance, but the structural integrity and stability of the housing is reduced

Engineering Contradiction:
Improvespeaker accessibilityVSAvoidhousing stability
Core Design Contradiction:
Ease of repairVSStability of the object's composition

Solution Approach 1:

The housing is segmented into a first cover and a second cover that can be detachably attached. The speaker body is held on the second cover side inside the housing. This segmentation allows the second cover to be detached for easy access to the speaker body for replacement or maintenance, while the speaker remains protected when the covers are assembled.

Inventive Principle:
Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The compartmentalization structure effectively reduces sound wave interference, allowing for clearer transmission of low-frequency sounds, and facilitates easy assembly and replacement of the speaker body while maintaining a compact design.

Implementation Method 1

interference between sound waves emitted from the front and rear surfaces of the speaker body

Methodology Applied
Scientific EffectSound wave interference: Sound

Data Source

PatentUS20250301077A1Device, input device, and image forming apparatus
Publication Date: 2025.09.25 FUJIFILM BUSINESS INNOVATION CORP
  • US20250301077A1 patent drawing
  • US20250301077A1 patent drawing
  • US20250301077A1 patent drawing

AI summary

A device includes a housing that includes a first cover and a second cover in which an opening portion to which the first cover is attachably and detachably attached is formed, a speaker body that is held on a second cover side inside the housing, and a compartmentalization structure that separates a first space on a front surface side of the speaker body and a second space on a rear surface side of the speaker body from each other in a state where the first cover is attached to the second cover.