Distance measuring device and sweeping robot

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Solution Overview

Problem

The distance measuring device in sweeping robots often fails to operate normally due to foreign matters entering the drive assembly, causing the driving wheel and/or driven wheel to lock.

Innovation Solution

The proposed solution involves a distance measuring device design that includes a base, a baffle, a drive assembly, a ranging component, and a driving component. The baffle is arranged opposite to the base plate and covers part of it, creating a mounting chamber that encloses the drive assembly. This design prevents foreign matters from entering the mounting chamber and winding on the drive wheels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the drive assembly is exposed without a baffle, then the structure is simple and easy to manufacture, but foreign matters can enter and cause the drive wheels to lock

Engineering Contradiction:

Improvenormal operation of distance measuring deviceVSAvoidstructure of mounting chamber

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The mounting chamber is segmented into an enclosed space by the baffle, separating the drive assembly from the external environment. This segmentation allows the drive assembly to be protected from foreign matters while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The baffle acts as an intermediary element between the external environment and the drive assembly. It prevents foreign matters from directly contacting the drive wheels while allowing the drive assembly to function normally within the enclosed mounting chamber.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a baffle is added to create an enclosed mounting chamber, then foreign matters are prevented from entering, but the device structure becomes more complex

Engineering Contradiction:

Improveforeign matters entering drive assemblyVSAvoidmounting chamber structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The harmful factor (foreign matters) is extracted or excluded from the drive assembly area by introducing the baffle. This creates a protected zone where the drive assembly can operate without contamination, addressing the harmful factor without fundamentally redesigning the entire device.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The baffle functions as a thin protective barrier that effectively blocks foreign matters from entering the mounting chamber. This thin film approach provides protection without adding significant structural complexity or weight to the device.

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS12242000B2Distance measuring device and sweeping robot

Publication Date: 2025.03.04 SHENZHEN CAMSENSE TECHNOLOGIES CO LTD

AI summary

The present disclosure provides a distance measuring device and a sweeping robot. The distance measuring device includes a base, a baffle, a drive assembly, a ranging component, and a driving component. The baffle is arranged over the base, and may prevent foreign matters over the baffle from intruding into the drive assembly. The baffle may be a portion extended upwards from the base, or may be arranged over the base in a mounting manner. The drive assembly may transmit power of the driving component to the ranging component. The driving component and the ranging component are mounted on the base. The baffle is arranged over the base, and defines a closed or a semi-closed mounting chamber with the base to block foreign matters from intruding into the drive assembly.