Mounting bracket and self-propelled robot

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Solution Overview

Problem

Existing mounting systems for laser distance sensors on self-propelled robots suffer from offset and jitter during rotation, affecting the precision and reliability of the sensors.

Innovation Solution

A mounting bracket with a magnetic positioning assembly, comprising a first and second magnetic element on the housing and rotating shaft, respectively, generates a radial force to maintain the rotating shaft's alignment and reduce friction, thereby alleviating offset and jitter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the laser distance sensor is rotatably mounted on the robot using conventional mounting systems, then the sensor can rotate to measure distances in different directions, but the rotating shaft deviates from the axis during rotation causing offset and jitter

Engineering Contradiction:

Improverotational capabilityVSAvoidalignment accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces the conventional mechanical positioning system with a magnetic positioning system. Magnetic elements are arranged on the rotating shaft and housing to generate magnetic forces that automatically maintain the rotating shaft's alignment with the axis during rotation, eliminating the need for mechanical constraints that cause friction and deviation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the physical state of the positioning mechanism from mechanical contact to magnetic field interaction. By utilizing magnetic field parameters instead of mechanical contact parameters, the system achieves frictionless rotation while maintaining precise alignment, thereby resolving the contradiction between rotational capability and alignment accuracy.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If conventional mechanical mounting systems are used, then the structure is simple and easy to manufacture, but friction and wear occur during rotation reducing reliability

Engineering Contradiction:

Improvestructural simplicityVSAvoidrotation stability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent substitutes mechanical contact-based positioning with a magnetic field-based positioning system. The magnetic elements generate positioning forces without physical contact, eliminating friction and wear while maintaining structural simplicity. This approach significantly improves rotation stability and reliability without complicating the manufacturing process.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If the rotating shaft is constrained mechanically to prevent deviation, then alignment is maintained, but friction increases and service life decreases

Engineering Contradiction:

Improveaxis alignmentVSAvoidservice life

Core Design Contradiction:

Measurement precisionVSDuration of action of moving object

Solution Approach 1:

The patent replaces mechanical constraint systems with magnetic positioning systems. The magnetic elements generate forces that guide and maintain the rotating shaft's alignment with the axis without physical contact. This eliminates friction and wear, thereby extending the service life of the rotating components while maintaining precise axis alignment throughout the product lifecycle.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 solution effectively stabilizes the laser distance sensor during rotation, enhancing the precision and reliability of the sensor's measurements and extending the product's service life by preventing misalignment and reducing friction.

Implementation Method 1

The mounting bracket is configured to prevent the rotating shaft from deviating from the axis by generating a force between the first magnetic element and the second magnetic element in a radial direction of the rotating shaft

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS11691266B2Mounting bracket and self-propelled robot

Publication Date: 2023.07.04 BEIJING ROCKROBO TECH CO LTD

AI summary

Embodiments of the present disclosure disclose a mounting bracket and a self-propelled robot. The mounting bracket includes a housing, a rotating shaft and a magnetic positioning assembly. The housing is provided with an inner cavity. The rotating shaft is configured to rotate about an axis in the inner cavity. The magnetic positioning assembly includes a first magnetic element and a second magnetic element which are respectively arranged on the housing and the rotating shaft. The laser distance sensor is attached to the rotating shaft and configured to rotate about the axis. The mounting bracket is configured to prevent the rotating shaft from deviating from the axis by generating a force between the first magnetic element and the second magnetic element in a radial direction of the rotating shaft.