Electrical Plug-in Connector With Sprung PCB For Tolerance Compensation
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Solution Overview
Problem
Existing electrical plug-in connectors, such as RJ45 sockets, face challenges in achieving reliable electrical contact due to housing tolerances, requiring long RF contacts that compromise transmission properties.
Innovation Solution
The electrical plug-in connector employs a sprung printed circuit board mounted via an elastic element, allowing shorter contacts and improved transmission properties by compensating for tolerances through the board's movement, with a comb element providing prestress and a pivot-bearing housing arrangement to manage forces and prevent solder joint damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If long RF contacts are used to compensate for housing tolerances, then reliable electrical contact is achieved, but electrical transmission properties deteriorate
Solution Approach 1:
The printed circuit board is designed to be sprung/movable rather than fixed, allowing it to dynamically adjust its position to compensate for housing tolerances. This dynamic compensation mechanism enables the use of shorter RF contacts while maintaining reliable electrical contact, thereby resolving the contradiction between contact reliability and transmission properties.
Solution Approach 2:
The elastic element acts as an intermediary between the housing and the printed circuit board, providing a flexible mounting solution. This intermediary component absorbs tolerance variations and enables the PCB to achieve the necessary excursion range with shorter contacts, improving both reliability and transmission properties.
2Reliability
If the printed circuit board is made longer to enable sprung movement, then compensation for tolerances is improved, but device complexity increases
Solution Approach 1:
Instead of changing the physical length of the printed circuit board, the invention changes the mounting parameters by using an elastic element to provide sprung support. This parameter change allows the PCB to achieve the necessary flexibility and excursion range without increasing its length or structural complexity.
3Reliability
If the printed circuit board is prestressed by an elastic element, then frictional forces are overcome and excursion is improved, but device complexity increases
Solution Approach 1:
The elastic element applies preliminary prestress to the printed circuit board during assembly, pre-positioning it in an optimal state. This preliminary action ensures that the PCB can immediately overcome frictional forces and achieve the required excursion when the mating connector is inserted, without requiring additional active 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
This design enhances electrical transmission properties by reducing contact length while ensuring sufficient contact force and preventing solder joint damage, allowing for improved connectivity and increased connector density.
Implementation Method 1
the printed circuit board is prestressed by the elastic element, with the result that, even in the case of a path of zero, a force already acts on the printed circuit board. The advantage is in particular that of overcoming frictional forces such that the printed circuit board then carries out the excursion directly if the mating connector is pressing.
Implementation Method 2
the first housing part and the second housing part are connected to one another via a pivot-bearing arrangement. In this case, the first housing part is preferably formed with at least one cylinder pin, and the second housing part is preferably formed with at least one receptacle for the cylinder pin
Data Source
AI summary
The invention relates to an electrical plug-in connector (1) comprising a housing, a printed circuit board (6), and at least one electrical contact which is electrically connected to the printed circuit board. The printed circuit board (6) is spring-mounted.