Automatic cleaning device, and system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cleaning robots face damage due to water ingress, which affects circuit boards and electronic devices when operating in humid environments, leading to malfunction.
Innovation Solution
The implementation of a retaining rib structure around the circuit board to prevent liquid and moisture from contacting electronic devices, combined with a stray light extinction structure to enhance signal reception accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the automatic cleaning apparatus operates in high humidity environments (kitchen, bathroom), then cleaning coverage and functionality are improved, but water ingress risk increases causing damage to circuit boards and electronic devices
Solution Approach 1:
The circuit board is divided into functional zones using retaining ribs: a peripheral area containing ports and a middle area containing electronic devices. The retaining ribs create physical segmentation that prevents liquid from the peripheral area from reaching the electronic devices in the middle area, thus protecting reliability while maintaining adaptability to humid environments.
Solution Approach 2:
The retaining ribs act as intermediary protective structures between the port device and electronic devices. These ribs form a barrier that intercepts and redirects liquid flow, preventing direct contact between liquid entering through ports and the electronic devices, thereby resolving the contradiction between environmental adaptability and reliability.
2Ease of operation
If port devices are placed on the peripheral area of the circuit board for connectivity, then communication and charging functions are enabled, but liquid ingress risk to electronic devices increases
Solution Approach 1:
The circuit board layout is segmented into a peripheral area for port devices and a middle area for electronic devices. Retaining ribs are positioned to create a liquid barrier between these zones, allowing ports to remain accessible for connectivity while preventing liquid from reaching sensitive electronic components.
Solution Approach 2:
The retaining ribs are designed to preemptively block liquid flow paths before liquid can reach the electronic devices. By positioning the ribs between the port device and electronic devices, the structure creates preliminary resistance to liquid ingress, counteracting the harmful effect before it can damage the electronics.
3Reliability
If the retaining rib is designed as a full-enclosure structure around the electronic device, then liquid protection is maximized, but manufacturing complexity and assembly difficulty increase
Solution Approach 1:
Instead of implementing a complete full-enclosure structure, the design applies retaining ribs selectively in critical areas where liquid flow paths converge toward electronic devices. This localized approach provides sufficient protection while maintaining manufacturing simplicity and assembly ease, avoiding the complexity of complete enclosure structures.
Solution Approach 2:
The retaining rib structure implements partial protection rather than complete full-enclosure. The ribs are positioned to block critical liquid paths from ports to electronic devices without forming a completely sealed enclosure, achieving adequate protection while maintaining ease of manufacture and assembly.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
An automatic cleaning device, comprising: a mobile platform; a circuit board, which is arranged in the mobile platform and comprises a circuit board body provided with a middle area and an edge area surrounding the middle area; interface devices arranged on the circuit board body and located in the edge area; electronic devices arranged on the circuit board body and located in the middle area; and a blocking rib arranged between the interface devices and the electronic devices and configured to block liquid and/or moisture from coming into contact with the electronic devices.