Kongsberg Automotive has filed a patent for a push-in tube connector port that securely connects a tube to a pressurized fluid system. The port includes a central recess, a sealing arrangement, a locking ring, and a tube gripping ring. The locking ring has a U-shaped cross-section with slots that allow it to be elastically deflected and secured in the recess. The design ensures a tight and secure connection between the tube and the fluid system. GlobalData’s report on Kongsberg Automotive gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Kongsberg Automotive, heater-integrated de-icing windows was a key innovation area identified from patents. Kongsberg Automotive's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.

Push-in tube connector port for pressurized fluid system

Source: United States Patent and Trademark Office (USPTO). Credit: Kongsberg Automotive ASA

A recently filed patent (Publication Number: US20230137536A1) describes a push-in tube connector port for connecting a tube to a pressurized fluid system. The connector port includes a central recess for receiving the end portion of the tube, with an insertion end opening and an abutment end to limit the insertion depth of the tube. Inside the recess, there is a sealing arrangement consisting of an environmental sealing ring and a main sealing ring to prevent fluid from flowing out of the tube into the recess. A locking ring is engaged within the recess to retain the sealing arrangement and prevent it from being blown out. Additionally, a tube gripping ring is located closer to the abutment end and cooperates with a conical wall portion in the recess to prevent the tube from being pulled out.

The patent also describes various characteristics and features of the push-in tube connector port. For example, the recess has an inwardly projecting circumferential flange at the insertion end opening, and the locking ring is an annular double ring component made of elastic plastic material. The outer ring wall of the locking ring is divided into several portions that can be elastically deflected towards the center by the flange during insertion. Once passed the flange, the outer ring wall portions flex back outwardly and engage the inner surface of the flange to secure the locking ring in place.

Other features include the elasticity and wall thickness of the locking ring's U-shaped cross-sectional profile, which allows the inner ring wall to follow the bending movement of the tube. The inner ring wall extends further away from the bottom wall portion than the outer ring wall portions, and the outer ring wall portions are outwardly inclined to flare away from the bottom wall portion. The recess also includes a feedback projection and a guiding projection to create resistance and ensure proper tube positioning.

The patent also describes a method for making the push-in tube connector port, which involves placing the locking ring, environmental sealing ring, spacer ring, main sealing ring, and insert sleeve around the stem portion of a protection and assembly plug. The plug is then inserted into the recess, and the outer ring wall of the locking ring flexes inwardly and then outwardly to secure the locking ring in place.

Overall, this patent presents a detailed design and method for a push-in tube connector port that provides secure and reliable connections in pressurized fluid systems.

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