Cleaning robot
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Solution Overview
Problem
Existing cleaning robots lack an efficient mechanism to absorb external forces during collisions, which can lead to damage to internal components and instability when encountering obstacles.
Innovation Solution
A cleaning robot design featuring a cover with a movement frame supported by elastic members and a rotator on the inner body to reduce friction and absorb external forces, utilizing a flow layer and lubricant to minimize impact on the fixed body, allowing the cover to efficiently perform bumping operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cover is made rigid to protect internal components, then protection capability is improved, but friction and impact force during collision increase
Solution Approach 1:
The cover structure is segmented into a fixed body and a movement frame that can move independently. The movement frame includes an inner body that can rotate relative to the fixed body through rotator reception parts. This segmentation allows the cover to maintain overall structural integrity for protection while enabling localized movement to reduce impact forces during collision.
Solution Approach 2:
The cover transitions from a static rigid structure to a dynamic structure where the inner body can rotate and move relative to the fixed body. The rotator reception parts enable rotational movement that absorbs collision energy. This dynamic capability allows the cover to adapt during collision, reducing the transmitted impact force while maintaining protection.
2Stability of the object's composition
If the inner body is directly connected to the fixed body, then structural stability is improved, but friction increases during movement
Solution Approach 1:
Rotator reception parts are introduced as intermediary elements between the inner body and the fixed body. These reception parts facilitate rotational movement and reduce direct frictional contact. The intermediary structure maintains structural stability by providing defined movement paths while minimizing friction through rotational rather than sliding contact.
Solution Approach 2:
The direct sliding mechanical connection between the inner body and fixed body is replaced with a rotational mechanism. The rotator reception parts enable the inner body to rotate, substituting high-friction sliding contact with lower-friction rotational contact, thereby reducing friction during movement while maintaining structural stability.
3Force
If elastic members are added to absorb external force, then collision absorption is improved, but device complexity increases
Solution Approach 1:
The movement frame and inner body are designed to move and rotate dynamically in response to external forces. This dynamic structure inherently absorbs collision forces through controlled movement and rotation, eliminating the need for additional elastic members like springs or shock absorbers. The complexity is reduced by using the structural dynamics themselves for force absorption.
Solution Approach 2:
The cover structure serves its own collision absorption function through the designed movement and rotation capabilities of the inner body relative to the fixed body. The structure absorbs external forces through its own dynamic response without requiring separate elastic components, making the system self-sufficient and reducing overall complexity.
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 design effectively absorbs external forces, reduces friction, and stabilizes the robot during collisions, protecting internal components and enhancing operational stability by allowing the cover to efficiently perform bumping operations.
Implementation Method 1
a rotator provided on a bottom side of the inner body, the rotator being configured to rotate upon movement of the cover to reduce friction between the inner body and the fixed body
Implementation Method 2
a lubricant applied between the rotator reception part and the rotator
Implementation Method 3
a flow layer for reducing friction with the fixed body or a plate fixed to the fixed body when the inner body moves
Implementation Method 4
a first elastic member connected between the movement frame and the fixed body for biasing the movement frame in a first direction, and a second elastic member connected between the movement frame and the fixed body for biasing the movement frame in a second direction
Data Source
AI summary
A cleaning robot includes a cover, a fixed body provided in the cover, a traveling part connected to the fixed body, a movement frame fastened to the cover to move in correspondence with movement of the cover, an inner body configured to support the movement frame relative to the fixed body, and a rotator provided on a bottom of the inner body to rotate in correspondence with movement of the cover.