Sliding Charging Socket Cover for Compact Electric Construction Machines
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Solution Overview
Problem
Existing electric construction machines face challenges in protecting the charging socket from environmental influences and damage due to swinging lids during operation, which can lead to injuries and operational restrictions.
Innovation Solution
A sliding cover mechanism for the charging socket that moves between closed and open positions along a sliding guide parallel to the body surface, secured by a detent spring, and equipped with brushes to prevent dirt accumulation and jamming, ensuring the cover does not protrude beyond the machine's bodywork.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hinged lid is used to cover the charging socket, then the charging socket can be protected when closed, but the lid may swing freely during operation causing damage or injuries
Solution Approach 1:
The cover is designed to slide along a guide rail parallel to the body surface, allowing controlled movement between closed and open positions while preventing free swinging during machine operation. The sliding mechanism with detent spring provides dynamic positioning that maintains safety during rotation.
Solution Approach 2:
A sliding guide mechanism acts as an intermediary between the cover and the machine body, constraining the cover's movement path and preventing it from swinging freely. The guide rail and detent spring system mediates the cover's motion to ensure it remains within safe boundaries.
2Reliability
If the cover is designed to protect the charging socket, then environmental protection is improved, but the cover may protrude beyond the bodywork causing operational restrictions
Solution Approach 1:
The cover slides parallel to the body surface rather than protruding outward perpendicular to it. This dimensional change in the sliding direction allows the cover to protect the charging socket while remaining within the machine's working radius and not interfering with operational space.
3Ease of operation
If the charging socket is accessible for charging, then charging functionality is improved, but the socket is exposed to environmental influences and vandalism
Solution Approach 1:
The sliding cover provides dynamic access control - it can be opened for charging operations and closed for protection. The detent spring mechanism ensures the cover remains securely in both open and closed positions, balancing accessibility with protection against environmental factors and vandalism.
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 sliding cover effectively protects the charging socket from environmental damage and unauthorized access while allowing operation with the charging cable plugged in, preventing injuries and maintaining machine compactness.
Implementation Method 1
a detent spring (9) can be assigned to the sliding cover (8) and the sliding guide (7), which engages with a corresponding counterpart (10) in both the closed and open positions
Implementation Method 2
The sliding cover (8) can be displaced between the closed position and the open position along a sliding guide (7) which is parallel to the body surface
Implementation Method 3
brushes (12) arranged between the groove (11) and the sliding cover (8). These brushes serve as guide bearings for the sliding cover (8) and prevent excessive dirt from accumulating
Data Source
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AI summary
The invention relates to an electric construction machine (1) comprising at least one electric motor for driving a travel drive (2) and/or a working unit (3), comprising an electrical energy storage device (4) for supplying the electric motor with electrical energy, and comprising a charging connection socket (5) for charging the energy storage device (4). A cover arranged in a body (6) for covering the charging socket is assigned to said charging connection socket (5). In order to create advantageous handling conditions, it is proposed that the cover be a sliding cover (8) which can be displaced between a closed position and an open position along a sliding guide (7) parallel to the body surface.