Door weather strip for motor vehicle

Door weather strip capable of surely closing a gap between a door of a motor vehicle

and a door opening portion of a vehicle body while exhibiting excellent sealing properties with good appearance.

The door weather strip includes a base portion for attachment to an outer periphery of the door, and a seal portion which is integrally formed with the base portion for contacting the door opening portion. The seal portion includes a main seal and a sub-seal which is provided on an outer side of the main seal. The sub-seal has a protrusion which protrudes from the base portion towards the door opening portion, and a tubular part having a generally triangular cross-section. One corner of the tubular part is integrally joined to the protrusion such that one wall which faces the one corner is located between the door and the door opening portion.

Accordingly, it is an object of the present invention to provide a door weather strip for a motor vehicle, of which a seal portion is capable of surely closing a gap between a vehicle door and a door opening portion, and exhibiting a goodappearance and excellent sealing properties without forming any depression and projection.

In accordance with the present invention, the door weather strip for sealing between a vehicle door and a door opening portion of a vehicle body includes a base portion for attachment to an outer periphery of the door, and a seal portion which isintegrally formed with the base portion for contacting the door opening portion to seal between the door and the door opening portion.

The seal portion includes a main seal for contacting the door opening portion, and a sub-seal for sealing between a peripheral part of the door and the door opening portion on the outer side of a contacting position of the main seal. Thesub-seal has a protrusion which protrudes from the base portion towards the door opening portion, and a tubular part having a generally triangular cross-section of which one corner is integrally joined to the protrusion. One wall of the tubular part,which faces the one corner, is located between the door and the door opening portion.

With this arrangement, the door weather strip includes the base portion for attachment to the outer periphery of the door, and the seal portion which is integrally formed with the base portion for contacting the door opening portion to sealbetween the door and the door opening portion. The base portion of the door weather strip can be attached to the outer periphery of the door securely with the seal portion held in position, and consequently when the door is closed, the seal portioncontacts the door opening portion and seals between the peripheral part of the door and the door opening portion.

As described above, with the door weather strip in accordance with the present invention, when the door is closed, the tubular part having the triangular cross-section can turn about its corner joined to the protrusion to surely seal the gapbetween the peripheral part of the door and the door opening portion. In addition, the upper and lower ends of the vertical wall respectively contact the door opening portion and the door frame, and consequently, a flat outside face of the vertical wallis exposed between the door opening portion and the door without forming any depression or projection, thereby giving a flat and smooth appearance to the outside face of the vehicle body.

Door weather strip for motor vehicle

By: yiyi li

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