Motorized Laser Level Mount With Backlash Detection Feedback

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Solution Overview

Problem

Conventional laser level mounts suffer from uncontrolled and undetected backlash in their gear trains, leading to inaccurate movements and user frustration when adjusting the laser level, especially over longer distances, and remote controls often mismatch the direction of rotation with the user's orientation.

Innovation Solution

The motorized laser level mount incorporates a backlash detection system with a monitoring unit to detect when backlash is removed, using components like microcontrollers and strain gauges to ensure precise movement, and a remote control with a dial that matches the mount's rotation direction, enhancing precision and user intuitiveness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a gear train is used in the platform adjustment mechanism, then the motor can effectively drive the platform rotation, but backlash in the gear train causes inaccurate movements and reduces positioning precision

Engineering Contradiction:

Improvemovement accuracyVSAvoidpositioning precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The system performs preliminary action by detecting backlash presence before executing positioning commands. The monitoring unit continuously monitors gear train conditions, and when backlash is detected, the system compensates by adjusting the motor's movement commands accordingly, ensuring accurate positioning despite the mechanical clearance

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A feedback mechanism is implemented where the monitoring unit continuously detects the state of the gear train (whether backlash is present or removed) and provides this information to the control system. The control system then adjusts motor commands based on this feedback, compensating for backlash effects and maintaining positioning accuracy

Inventive Principle:

Principle #23Feedback

2Device complexity

If conventional gear trains are used without backlash detection, then the device structure remains simple, but backlash causes inconsistent movement distances in different rotation directions

Engineering Contradiction:

Improvesystem structureVSAvoidmovement consistency

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The system performs preliminary detection of backlash conditions before executing positioning commands. The monitoring unit continuously monitors gear train conditions, and when backlash is detected, the system compensates by adjusting the motor's movement commands accordingly, ensuring accurate positioning despite the mechanical clearance

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12523470B2Motorized mounting devices

Publication Date: 2026.01.13 MILWAUKEE ELECTRIC TOOL CORP

AI summary

Various motorized device designs with backlash detection systems are shown. In a specific embodiment, a motorized laser level mount includes a rotatable laser platform, a housing cover, a housing, a gear train and a backlash detection system. The backlash detection system coupled to the motor and the laser platform and configured to determine when backlash has been removed from the gear train.