Loudspeaker Mounting Arms for Stable One-Handed Installation

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Solution Overview

Problem

Conventional dog leg mounting systems for loudspeakers are cumbersome and unstable, requiring manual support during installation, prone to loosening, and can complicate removal, often necessitating partial wall or ceiling removal when stuck.

Innovation Solution

A mounting system with a mounting assembly featuring an elongated screw, a support member, and a rotatable mounting arm that transitions between a resting and working position, allowing secure installation and removal of loudspeakers without manual support, using a guide housing to prevent rotation and ensure stable engagement with the substrate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional dog leg mounting systems are used, then the loudspeaker can be secured to the wall or ceiling, but the installer must manually hold the loudspeaker in place during installation and the system is cumbersome and unstable

Engineering Contradiction:
ImproveInstallation easeVSAvoidMounting system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The mounting arms are pre-configured in a retracted position that allows the loudspeaker to be inserted into the mounting opening without manual support. Once inserted, the mounting arms automatically extend to secure the loudspeaker, eliminating the need for the installer to manually hold the device during installation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The mounting system performs self-service by automatically transitioning from a retracted installation position to an extended securement position. The mounting arms self-adjust to engage with the mounting surface, providing stable support without requiring continuous manual intervention or complex adjustment procedures.

Inventive Principle:
Principle #25Self-service

2Reliability

If conventional dog leg mounting systems are used, then the loudspeaker can be mounted, but the system is prone to loosening and may not provide sufficient retention after multiple uses

Engineering Contradiction:
ImproveMounting stabilityVSAvoidRetention duration
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The mounting system employs dynamic mounting arms that can transition between retracted and extended positions. This dynamic capability allows the system to adapt to installation conditions and maintain optimal engagement with the mounting surface, preventing loosening over time and providing reliable retention through multiple installation cycles.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The mounting system divides the securement function into multiple independent mounting arms distributed around the loudspeaker perimeter. This segmentation provides redundant support points, ensuring that if one mounting arm experiences wear or loosening, the other arms continue to provide stable retention.

Inventive Principle:
Principle #1Segmentation

3Ease of repair

If conventional dog leg mounting systems are used, then the loudspeaker can be secured, but removal is complicated and may necessitate partial wall or ceiling removal when stuck

Engineering Contradiction:
ImproveRemoval easeVSAvoidDamage risk
Core Design Contradiction:
Ease of repairVSObject-affected harmful factors

Solution Approach 1:

The mounting arms are designed to automatically retract to an open position before removal is needed. This preliminary action clears the mounting opening, allowing the loudspeaker to be easily pulled away from the wall or ceiling without requiring forceful extraction or damage to the mounting surface.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The mounting arms serve as an intermediary mechanism between the loudspeaker and the mounting surface. By controlling the engagement and disengagement of this intermediary, the system facilitates easy removal without direct contact between the loudspeaker and the wall or ceiling, eliminating the risk of damage to either component.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Productivity

If conventional dog leg mounting systems are used, then the loudspeaker can be mounted, but the installer requires multiple hands and tools simultaneously making the process cumbersome

Engineering Contradiction:
ImproveInstallation speedVSAvoidInstallation simplicity
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The mounting arms are pre-positioned in a retracted state that facilitates easy insertion of the loudspeaker into the mounting opening. Once inserted, the mounting arms automatically extend to secure the device, eliminating the need for the installer to simultaneously manipulate multiple components with different hands and tools.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The mounting system performs the securement action automatically after insertion, without requiring the installer to manually adjust or tighten individual mounting components. This self-service capability dramatically reduces installation time and simplifies the process to a single insertion motion.

Inventive Principle:
Principle #25Self-service

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

Enables efficient, stable installation and removal of loudspeakers by allowing secure engagement with the substrate before fastening, reducing installation time and simplifying the process, and preventing unwanted movement post-installation.

Implementation Method 1

the mounting arm is spring-biased away from the screw and extends outwardly through the front side of the wall structure

Methodology Applied
Scientific EffectSpring bias: Spring

Data Source

PatentEP4005225B1Mounting system for a loudspeaker
Publication Date: 2026.01.14 HARMAN INT IND INC
  • EP4005225B1 patent drawingFigure 1~2
  • EP4005225B1 patent drawingFigure 3
  • EP4005225B1 patent drawingFigure 4~5

AI summary

A mounting system for mounting a loudspeaker to a substrate includes a mounting assembly having an elongated screw, a support member received on and movable along the screw, and a mounting arm rotatably connected to the support member, the mounting arm having a resting position and a working position. The mounting assembly further includes a guide housing which receives the mounting assembly with the screw extending longitudinally therethrough, the guide housing including a wall structure with an open front side and a cap at a top portion of the wall structure. In the resting position, the support member is positioned along the screw to be at least partially received within the cap and the mounting arm is substantially contained within the wall structure. In the working position, the support member is positioned along the screw to be outside of the cap and the mounting arm is spring-biased away from the screw and extends outwardly through the front side of the wall structure.