Metal Detector Cane Battery Offset With Lateral Watertight Connector
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Solution Overview
Problem
Existing metal detectors face inefficiencies in power supply due to high electrical impedance in long wires, leading to reduced battery efficiency, fragile connectors, and difficulty in maintaining watertight seals, which complicates maintenance and charging.
Innovation Solution
A redesigned battery module with a lateral connection system using a flat connector head and plug-and-play mechanism, allowing for a secure, watertight connection that reduces the number of turns in the power cable, and enables charging without removing the battery from the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a long wire is used to connect the battery to the coil, then the battery can be positioned remotely (e.g., in the handle or shaft), but the electrical impedance increases, reducing power supply efficiency
Solution Approach 1:
A wireless power transmission system (electromagnetic coupling) is introduced as an intermediary between the battery and the coil, eliminating the need for a physical wire connection. This allows the battery to be positioned remotely in the handle or shaft without suffering from the electrical impedance problems of long wires, thus resolving the contradiction between remote battery placement and power supply efficiency.
2Ease of repair
If a long power cable with larger coil is used to facilitate battery compartment removal, then maintenance becomes easier, but the cable length increases, reducing power supply efficiency
Solution Approach 1:
The wireless power transmission system serves as an intermediary that eliminates the physical cable entirely. The battery compartment can be removed for maintenance without requiring a long cable with larger coil, as there is no cable connection to maintain. This resolves the contradiction by improving maintenance ease without increasing cable length and simultaneously maintaining power supply efficiency.
3Quantity of substance
If the battery is housed within the shaft, then battery capacity can be increased, but the connector dimensions are limited by the shaft diameter, making connectors fragile
Solution Approach 1:
The wireless power transmission system eliminates the need for a physical connector between the battery and the coil. This removes the constraint of connector diameter being limited by shaft diameter, allowing the battery to be housed within the shaft with full capacity while avoiding the fragility issue of small-diameter connectors.
4Volume of moving object
If the power cable connection is made at the bottom of the housing, then the battery can be housed in the shaft, but the connector is difficult to access for maintenance and charging
Solution Approach 1:
The wireless power transmission system eliminates the physical connector entirely, removing the accessibility problem. The battery can be housed in the shaft with full volume utilization, and since there is no connector to access for maintenance or charging, the contradiction is resolved in favor of both housing space and operational ease.
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
Improves power supply efficiency, simplifies maintenance, and ensures a reliable watertight seal, enabling use in aquatic environments while reducing the risk of connector failure and enhancing user convenience.
Implementation Method 1
a power cable adapted to transmit an electric current, the power cable comprising, on the one hand, a first end which has a connection head complementary to the side connector, and on the other hand, a second end electrically connected to the detection disc and adapted to provide an outgoing current
Implementation Method 2
This coil is designed to generate an electromagnetic field that interacts with metallic objects buried in a substrate such as soil. The electromagnetic field induces electrical currents in these metallic objects
Data Source
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AI summary
The invention relates to a portable metal detector (200) comprising a shaft carrying a detection disc (203) equipped with one or more coils, the shaft comprising: - an arm (24) extending along a longitudinal axis AA and having a housing delimited by an internal wall (241) - a battery module (30) inserted in the housing, the battery module (30) having a lateral connector (31), - a power cable (40) adapted to transmit an electric current, the power cable (40) comprising, on the one hand, a first end having a connection head (41) complementary to the lateral connector (31), and on the other hand, a second end which is electrically connected to the detection disc and adapted to provide an outgoing current; According to the invention, the connection head (41) of said cable (40) being maintained in contact with the lateral connector (31) in particular by the internal wall of the housing.