Charging Coupling With Tapered Opening For Robotic Lawnmower
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Solution Overview
Problem
Existing robotic garden tools, such as robotic lawnmowers, face issues with unstable electrical connections due to loss of elasticity in contacting bars, leading to poor charging efficiency when the charging terminal and metal plate misalign.
Innovation Solution
A charging coupling system with elastic terminals and a tapered opening design ensures stable contact by using bent metal sheets with convex portions for secure docking and preventing separation during charging, ensuring consistent electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resilient contacting bars are used for charging connection, then initial electrical contact is achieved, but contact stability deteriorates after long-term use due to loss of elasticity
Solution Approach 1:
The patent changes the material parameters of the elastic terminal from traditional resilient contacting bars to a composite structure comprising a support plate with multiple elastic fingers made of phosphor bronze or beryllium copper. This material parameter change maintains elastic properties over extended service life while ensuring stable electrical contact.
Solution Approach 2:
The elastic terminal uses composite material construction combining phosphor bronze or beryllium copper for the elastic fingers with a support plate, creating a composite structure that optimizes both elastic performance and electrical conductivity while resisting fatigue over time.
2Reliability
If L-shaped charging terminal with upwardly bent contacting bars is used, then charging connection is established, but alignment precision deteriorates due to misalignment between metal plate and contacting bars
Solution Approach 1:
The patent introduces a tapered opening with a curved surface that guides the protrusion during insertion. This curvature design ensures that the metal plate and elastic terminal automatically align during the docking process, compensating for any initial misalignment and ensuring precise contact between corresponding terminals.
Solution Approach 2:
The tapered opening acts as an intermediary guiding structure between the protrusion and the elastic terminal. It mediates the alignment process by providing a tapered pathway that naturally guides the components into proper alignment, eliminating the need for precise manual positioning.
3Reliability
If contacting bars lose elasticity after long-term misalignment, then charging connection fails, but structural complexity increases if multiple replacement mechanisms are added
Solution Approach 1:
The elastic terminal is designed to be self-adjusting through its elastic fingers that automatically adapt to alignment variations during docking. The tapered opening guides the components into proper alignment, and the elastic nature of the fingers allows them to self-correct minor misalignments, eliminating the need for complex adjustment mechanisms or frequent manual intervention.
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 system provides a stable and efficient electrical connection, preventing poor contact and ensuring reliable charging of robotic garden tools by maintaining elasticity and increasing contact area through the use of bent metal sheets and convex portions.
Implementation Method 1
a first elastic terminal and a second elastic terminal... the first elastic terminal and the second elastic terminal are respectively in elastic contact with the third elastic terminal and the fourth elastic terminal
Data Source
AI summary
The present invention provides a charging coupling including a first charging assembly, the first charging assembly including a first elastic terminal and a second elastic terminal, a receiving space being formed between the first elastic terminal and the second elastic terminal, a tapered opening being provided on one side of the first charging assembly, the tapered opening communicating with the receiving space; and a second charging assembly adapted to the first charging assembly, one side of the second charging assembly being provided with a protrusion, a third elastic terminal and a fourth elastic terminal disposed on the protrusion, the third elastic terminal including a first convex portion and fourth elastic terminal including a second convex portion, and the convex portion being used for inserting into the receiving space from the tapered opening.