The present disclosure generally relates to a chassis housing and support structures to a secure a circuit board in an electrical enclosure. More particularly, the present disclosure relates to a chassis housing and support structures that may be used in industrial power supply units, such as a Power Supply Unit (PSU).

The background information herein below relates to the present disclosure but is not necessarily prior art.

Industrial power supplies tend to experience different kinds of mechanical disturbances like shock and vibrations due to the nature of the application in the field and during transport. These external factors can cause power supply units to have loosen connections and cause component failures that can ultimately lead to equipment malfunction. Considering real-world situations, power supply units need to comply with relevant regulations and standards to withstand mechanically hostile environments without wearing out and eventually breaking down. To meet these requirements and to ensure that the PSU is always in good condition, designers must implement ways that can eliminate and/or reduce the effects of any external mechanical disturbances.

In addition, where a Printed Circuit Board (PCB or circuit board) in an industrial power supply unit is not properly secured within the unit, there is also the undesirable likelihood of having bent connector pins due to the process of insertion of the connector pins into mating connectors, especially for devices serving in a backplane system. The undesirable bent connector pins may be caused by misaligned connector pins resulting from an unsteadily positioned circuit board being pressed into the mating terminal.