Vehicular radar sensor with enhanced housing and PCB construction

A method of assembling a vehicular radar sensor for a vehicular radar sensing system, the method comprising:

• providing a front housing portion and a rear housing portion, wherein the front housing portion comprises a first surface, a second surface, opposite side walls, and an end wall, and wherein each of the opposite side walls of the front housing portion extend from the first surface to the second surface, and wherein each side wall of the opposite side walls has a slot extending therealong and spaced from the first surface and the second surface;
• providing a printed circuit board (PCB) having side perimeter regions along opposite sides of the PCB and end perimeter regions along opposite ends of the PCB;
• sliding the PCB into the front housing portion, wherein the side perimeter regions slide along the slots along the respective side walls of the front housing portion;
• after the side perimeter regions of the PCB are received in the slots along the opposite side walls of the front housing portion, joining the rear housing portion to the front housing portion to establish a cavity in which the PCB is disposed;
• and
• wherein joining the rear housing portion to the front housing portion comprises positioning an end wall of the rear housing portion at an end of each of the slots to preclude removal of the PCB from the slots and from the front housing portion.

A vehicular radar sensing system, the vehicular radar sensing system comprising:

• a radar sensor disposed at a vehicle so as to sense exterior of the vehicle;
• wherein the radar sensor comprises a housing and a printed circuit board (PCB);
• wherein the PCB has side perimeter regions along opposite perimeter sides of the PCB and end perimeter regions along opposite perimeter ends of the PCB;
• wherein the housing comprises a first housing portion and a second housing portion;
• wherein the first housing portion comprises a first surface, a second surface, and side walls extending from the first surface to the second surface;
• wherein each of the side walls has a slot extending therealong and spaced from the first surface and the second surface;
• wherein the side perimeter regions of the PCB are received in and along respective slots along the side walls of the first housing portion;
• wherein an end wall of the first housing portion has an end slot, and wherein an end perimeter regions of the PCB is received in the end slot;
• wherein, with the side perimeter regions and end perimeter region of the PCB received in and along the slots along the side walls and end wall of the first housing portion, the first housing portion and the second housing portion are joined together to establish a cavity in which the PCB is disposed;
• wherein the first housing portion and the second housing portion are joined via at least one fastener;
• and
• wherein the second housing portion, when joined with the first housing portion, covers an end of each of the slots along the side walls of the first housing portion to preclude removal of the PCB from the slots and from the first housing portion.