Abstract: In one aspect, a variable pressure weatherstrip assembly according to the present disclosure includes: a weatherstrip including a sealing portion having a closed cross-section therein and configured to seal a portion between a vehicle body and an opening/closing part of a vehicle, and a fixing portion integrated with the sealing portion and fixed to a panel of the vehicle; an air supply device configured to supply pressurized air to the sealing portion; an air line configured to allow the air supply device and the sealing portion to communicate with each other; and one or more control valves installed in the air line, disposed between the sealing portion and the air supply device, and configured to control the air to be supplied to the sealing portion from the air supply device.

Abstract: In one aspect, a variable pressure weatherstrip assembly according to the present disclosure includes: a weatherstrip including a sealing portion having a closed cross-section therein and configured to seal a portion between a vehicle body and an opening/closing part of a vehicle, and a fixing portion integrated with the sealing portion and fixed to a panel of the vehicle; an air supply device configured to supply pressurized air to the sealing portion; an air line configured to allow the air supply device and the sealing portion to communicate with each other; and one or more control valves installed in the air line, disposed between the sealing portion and the air supply device, and configured to control the air to be supplied to the sealing portion from the air supply device.

Abstract: A method of controlling a pressure variable weather strip for varying a pressure of a sealing part of the weather strip is provided. The method includes a closing checking step of, by a controller, checking whether an opening/closing part of a vehicle is in a closed state. When a vehicle speed reaches a preset target vehicle speed to increase the pressure of the sealing part in a state in which the opening/closing part is closed, the controller operates an air supply device to supply air to the sealing part.