Monitor Arm Rotation Limiter for Wall Collision Prevention

Solution Overview

Problem

Existing monitor arm systems lack a mechanism to effectively limit the rotation of user devices like computer monitors to prevent them from touching walls or extending into adjacent service areas.

Innovation Solution

A rotation limit system comprising a mount post, rotation limit bushing, locking bushing, and rotation limit selector, which are assembled to limit the degree of rotation of the monitor arm based on user preference, using a slot and actuation element to control the range of motion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the user device is permitted to rotate freely about the base axis, then the user can adjust the device to various positions, but the device may touch walls or encroach into adjacent service areas

Engineering Contradiction:

Improveadjustability of user deviceVSAvoiddevice touching walls or encroaching into adjacent areas

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The rotation limit mechanism provides dynamic control over the range of motion, allowing the system to transition between fully restricted and freely adjustable states based on operational needs. The selectable rotation limits enable the same monitor arm to adapt to different workspace configurations and requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter of rotational freedom by introducing selectable limit positions (e.g., 0°, 90°, 180°). This allows the operational parameters of the monitor arm to be adjusted according to different usage scenarios, balancing adjustability with spatial constraints.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If rotation of the user device is limited to prevent harmful effects, then device collision is prevented, but the degree of freedom for adjustment is reduced

Engineering Contradiction:

Improveprevention of device collisionVSAvoidrange of adjustment

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The rotation limit mechanism provides dynamic control over the range of motion, allowing the system to transition between fully restricted and freely adjustable states based on operational needs. The selectable rotation limits enable the same monitor arm to adapt to different workspace configurations and requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter of rotational freedom by introducing selectable limit positions (e.g., 0°, 90°, 180°). This allows the operational parameters of the monitor arm to be adjusted according to different usage scenarios, balancing adjustability with spatial constraints.

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If a rotation limit mechanism is added to the monitor arm, then rotational control is improved, but the device complexity increases

Engineering Contradiction:

Improverotational control precisionVSAvoidmonitor arm structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The rotation limit mechanism is segmented into separate, modular components including the rotation limit selector, rotation limit indicator, and limit projection elements. This segmentation allows for easier manufacturing, assembly, and maintenance while achieving precise rotational control through the coordinated interaction of these discrete parts.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250377069A1Monitor arm

Publication Date: 2025.12.11 HUMAN ACTIVE TECH LLC

AI summary

An adjustable rotation limiter for a monitor arm is disclosed. The monitor arm may include a base portion and a rotatable arm portion. The rotation limit system includes a rotation limit selector that is carried on either the base portion or the rotatable arm portion and includes a limit projection that extends parallel to an axis of rotation. A rotation limit bushing is carried on the other of the base portion or rotatable arm portion and includes an annular recess having a slot extending in a circular arc about the axis of rotation. The limit projection is slidably inserted into the slot to limit the extent of rotation of the rotatable arm portion with respect to the base portion.