Contacting device for the transmission of electrical energy to a circuit board and method for the assembly of such a contacting device

A method for assembling a contacting device, the method comprising the following steps:

• providing a preassembled subunit comprising a housing, a first contact element, a spring element and at least one plug-in contact element for mechanically and electrically connecting the first contact element to a circuit board, the housing comprising at least one opening, the first contact element being arranged in the housing and the first contact element comprising a receiving chamber which is open with respect to the at least one opening, the receiving chamber comprising a central longitudinal axis, the housing and the first contact element being displaceable to one another in a direction transverse to the central longitudinal axis, the spring element acting in a direction transverse to the central longitudinal axis, the spring element being arranged between the housing and the first contact element, the at least one plug-in contact element and the first contact element being firmly connected to one another;
• contacting the first contact element with the circuit board by inserting the at least one plug-in contact element into an associated plug-in contact element receptacle of the circuit board,
• displacing the housing and the first contact element relative to one another in a direction transverse to the central longitudinal axis against a spring force of the spring element into an insertion position;
• inserting a second contact element into the receiving chamber through the at least one opening;
• displacing the housing and the first contact element relative to one another in a direction transverse to the central longitudinal axis by relaxation of the spring element into a clamping position;
• clamping the second contact element located in the receiving chamber between the housing and the first contact element such that the second contact element is contacted with the circuit board in an electrically conducting manner via the first contact element and the at least one plug-in contact element.