Our holding down clamps (clamping fixtures) were designed especially for test adapters. The special feature is the combination of a pivoting/circular arc and a vertical movement. A typical application is holding down printed circuit boards while contacting test points with spring contact pins.
A carrier plate is mounted on the cantilever of the downholder. When contacting from below, hold-down pins, which press on free areas of the circuit board, are installed in the carrier plate. When contacting from above, spring contact pins, which meet the test points, are built into the carrier plate. Due to the vertical lowering, the spring contact pins have no side loads and, thus, a long service life.
Since the mechanism is self-locking, the combination clamp remains in its lower end position even if the spring forces of the test pins act against it. When open, the operator has free access to the circuit board holder and can easily insert the DUT.
Carrier plates or hold-down devices are not included in the price of the combination clamps. On request we offer both, individual components and complete test adapters. For construction purposes, 3D models are available for download (see tab “Downloads”).
Features of the holding down clamps
KS50 (small model)
|Dimensions||H 59 x D 135 x W 43.5 mm|
|Clamping force||approx. 50 N for max. 25 spring probes|
|Weight||approx. 120 g|
KS100 (medium-sized model)
|Dimensions||H 88 x D 190 x W 54 mm|
|Clamping fixture||approx. 100 N for max. 50 spring probes|
|Weight||approx. 200 g|
KS180 (large model)
|Dimensions||H 117.5 x D 286.4 x W 116 mm|
|Clamping force||approx. 180 N for max. 100 spring probes|
|Linear lift||15 mm|
|Weight||approx. 1.000 g|
Configuration of the downholders
|Holding down clamp KS50||Quick release clamping fixture (small model) with up to 50 N clamping force|
|Holding down clamp KS100||Quick release clamping fixture (medium-sized model) with up to 100 N clamping force|
|Holding down clamp KS180||Quick release clamping fixture (large model) with up to 180 N clamping force|
Related to our holding down clamps, we offer the following services:
We are looking forward to your contact enquiry!