Robot Cover Connecting Structure for Lift vs Impact Detection
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Solution Overview
Problem
Conventional robotic working machines struggle to distinguish between hitting against an obstacle and being lifted, leading to incorrect operation cessation.
Innovation Solution
A novel connecting structure with a body and cover unit, utilizing resilient and detachable components, along with magnets and detecting portions, to differentiate between hitting and lifted states, ensuring accurate detection and appropriate operational responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cover unit is subjected to a large impact by hitting against an obstacle, then the cover unit is moved with respect to the working body unit in both horizontal and vertical directions, but the robotic working machine incorrectly determines it is lifted and stops operation
Solution Approach 1:
The connecting structure is segmented into distinct functional portions: a body connecting section with an intermediate portion that resiliently deforms horizontally, and a cover connecting section with a shaft portion that moves vertically. This segmentation allows independent movement in different directions, enabling the system to distinguish between hitting (horizontal movement) and lifting (vertical movement) states accurately.
Solution Approach 2:
Different portions of the connecting structure have different mechanical properties: the intermediate portion is designed to be resilient and deformable in the lateral direction to absorb impact forces during hitting, while the shaft portion is designed to slide vertically to detect lifting. This local differentiation of mechanical properties enables accurate state discrimination.
2Device complexity
If a simple detection structure is used to detect cover unit movement, then the device complexity is reduced, but the ability to distinguish between hitting and lifted states is insufficient
Solution Approach 1:
The connecting structure incorporates dynamic elements: the intermediate portion resiliently deforms during lateral impact, and the shaft portion slides vertically during lifting. These dynamic responses to different types of forces enable a relatively simple structure to achieve precise distinction between hitting and lifted states without requiring complex sensors or mechanisms.
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
Effectively distinguishes between hitting and lifted states, enabling precise control of the robotic machine's operations, ensuring safety and functionality.
Implementation Method 1
the intermediate portion of the body connecting section is resiliently deformed in the lateral direction
Implementation Method 2
the shaft portion of the cover connecting section is slid upwardly with respect to the head portion of the body connecting section
Data Source
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AI summary
The autonomous travel working machine (1) comprises a working body unit (2), a cover unit (4), and a connecting structure unit (12) connecting the working body unit (2) and the cover unit (4). The connecting structure unit (12) includes a body connecting section (16) attached to the working body unit (2) and a cover connecting section (14) attached to the cover unit (4). When the cover unit (4) is lifted, a shaft portion (14a) of the cover unit (4) is slid upwardly with respect to a head portion (16c) of the working body unit (2) so that the cover unit (4) is moved upwardly or lifted with respect to the working body unit (2). When the working machine hits against an obstacle, an intermediate portion (16b) of the body connecting section is resiliently deformed in a lateral direction so that the cover unit(4) is moved with respect to the working body unit (2) substantially only in the lateral direction.