Motor Module Solderless Electrical Connection
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Solution Overview
Problem
Existing methods for attaching stepper motors to automotive dashboard printed circuits require either soldering or specific deformable connection lugs, leading to increased production costs and difficulty in reusing motors on different circuits.
Innovation Solution
A motor module with interchangeable electrical contact elements that can either solder directly to the printed circuit or use deformable contacts for a solderless connection, allowing for easy removal and adaptation to various printed circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soldering connection tabs to the printed circuit is used, then reliable electrical contact is achieved, but production cost increases and motor reuse becomes difficult
Solution Approach 1:
The electrical connection system is segmented into separate components: connection tabs on the motor and corresponding contacts on the printed circuit. This allows the motor to be detached and reused while maintaining reliable electrical contact through the tab-to-contact interface, eliminating the need for permanent soldering.
Solution Approach 2:
The connection tabs and contacts act as intermediary elements between the motor and the printed circuit. These intermediaries provide a reliable electrical connection without requiring direct soldering, enabling both reliability and ease of manufacture through simple mechanical insertion.
2Ease of operation
If deformable connection lugs are used for solderless connection, then motor removal and reuse becomes easy, but production requires specialized motor designs with specific connection lugs
Solution Approach 1:
The connection tabs are designed with a universal geometry that can be produced using standard motor manufacturing processes. This universal design allows the same motor structure to be used across different applications while maintaining ease of removal and reuse, without requiring specialized deformable lugs.
3Reliability
If connectors are placed on the printed circuit and motor box is placed on the circuit, then electrical connection is established, but the process is complex and does not allow easy removal and reuse
Solution Approach 1:
The electrical connection function and mechanical mounting function are merged into a single integrated interface. The connection tabs serve both as electrical conductors and as mechanical attachment elements, eliminating the need for separate connectors and simplifying both installation and removal processes.
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
Enables cost-effective production and easy reconfiguration of motor modules, ensuring reliable electrical contact and stability on different printed circuits without the need for welding or specialized tools.
Implementation Method 1
these particular connection lugs come into contact with electrical contact surface areas on the printed circuit and deform in order to ensure electrical contact
Data Source
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AI summary
The present invention relates to a dashboard indicator module comprising, in a casing, a rotary motor, an output shaft, mechanical reduction means associated with the motor, at least one electrical supply coil, electrical connection tabs linked to the coils leaving said casing and electrical contact elements, characterized in that said electrical contact elements can be fitted on the connection tabs in order to produce solderless connectors on the printed circuit or even removed from the connection tabs in order to allow the connection tabs of the motor to be soldered directly to the printed circuit.