JP2008007010A - Weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the fact that melted snow water dropping from a roof of a vehicle body flows down along a pillar and is frozen at a lower part of a door to cause a trouble for opening and closing of the door. <P>SOLUTION: In the weather strip 3 mounted to a door frame 1 opposed to an inclination part of the pillar P, a guide groove 4 for guiding and making the melted snow water flow down is provided between a first lip 34a abutted on the pillar P and a second lip 34b abutted on the outer peripheral projection edge 11 of the door frame, a dam 5 is formed in the midway of the guide groove 4, and the melted snow water flowing down in the guide groove 4 is discharged to the outer surface side of the door. A notch 6 is formed at the tip edge of the first lip 34a at a position immediately before the upstream side of the dam 5, the melted snow water flowing down along the tip edge is dropped in the guide groove 5, and discharged to a door outer surface side. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a weather strip attached to a door frame of an automobile door, and more particularly to a weather strip attached to a door frame corresponding to a door opening edge of a vehicle body from a roof side to an inclined portion of a pillar.

  This type of weatherstrip generally has a mounting base that is mounted along the outer periphery of the door frame, a hollow seal that bulges from the mounting base and presses against the door opening edge when the door is closed, and extends from the mounting base to the door. A seal portion is provided for sealing between the opening edge and the outer peripheral protruding edge rising from the outer edge of the outer periphery of the door frame (see, for example, Patent Document 1 below).

  FIGS. 3 and 4 (sectional views taken along the line TT in FIG. 3) show an example of this type of weatherstrip. The vane-type car or the wagon car has a substantially horizontal roof side R above the front pillar P. A weather strip 3 is attached to the outer periphery of the door frame 1 of the front door D facing the door opening edge 2 formed by the half inclined portion.

  The door frame 1 includes an outer panel 1a and an inner panel 1b. An outer peripheral protruding edge 11 is formed on the outer periphery so as to protrude in the direction in which the outer panel 1a extends upward, and a weather strip mounting surface 12 is formed on the inner panel 1b. A glass run 8 is fitted into a channel portion 13 formed on the inner peripheral side of the door frame 1, and a peripheral portion of the closed door glass 9 is sandwiched between opposing lips of the glass run 8. An opening weather strip 7 is attached to the inner edge of the door opening edge 2.

  The weather strip 3 has a mounting base 31 fixed to the weather strip mounting surface 12 of the door frame 1 by a clip C. The weather strip 3 bulges from the vehicle inner side of the mounting base 31 and extends from the vehicle outer side of the mounting base 31 so as to be pressed against the side surface of the door opening edge 2 when the door is closed. And a thick-walled seal portion 33 that seals the gap between the upper end of the outer peripheral projection edge 11 of the door frame 1 facing this. The front end of the seal portion 33 is separated into a first lip 34a that abuts on the outer edge of the door opening edge 2 and a second lip 34b that abuts on the upper end of the outer peripheral projection 11 of the door frame 1. A guide groove 4 is formed in series from the roof side R to the inclined portion of the front pillar P between 34a and 34b. And the water which flows from a roof is received by this guide groove 4, and it guides below and flows down.

By the way, in a cold district specification vehicle, etc., it is guided at a position near the lower end of the inclined portion of the front pillar P, for example, at a position corresponding to the upper end of the rear vertical edge of the triangular mirror bracket M provided at the lower front end of the door window. A dam 5 is formed in the groove 4 to cut off the groove 4 across the groove 4. That is, as shown in FIG. 3, snow S accumulates on the roof, and the melted snow melted is received by the guide groove of the weather strip 3 and flows down (arrow S <b> 1). Further, it flows down the part between the vertical lower half of the door opening edge 2 and the vertical front edge of the body panel 10 of the door D, reaches the lower end corner of the door opening edge 2 (arrow S2), and freezes again. In some cases, the door D may be opened and closed. Then, the snowmelt water flowing down is blocked by the dam and discharged along the rear edge of the mirror bracket M on the door outer surface side (arrow S3).
JP 2001-80365 A

  However, even if the dam 5 is provided in the guide groove 4 in this way, not all of the snowmelt water flows down the guide groove 4 and is excluded by the dam 5 to the outer surface side of the door. It flows down along the tip edge of the first lip 34a on the side and the contact portion of the front pillar P, passes through the dam 5, reaches the lower end corner of the door opening edge, and freezes there.

  Therefore, it is conceivable that the dam 5 is formed higher than the tip of the first lip 34a. However, in this case, the dam 5 protrudes in the form of a tongue piece in the middle part of the front pillar P, and the appearance around the door opening edge 2 looks good. Will be significantly impaired.

  Accordingly, the present invention allows water flowing along the weather strip that contacts the door opening edge of the vehicle body from the intermediate portion of the weather strip without impairing the appearance around the door opening edge and without adding another member other than the dam. An object of the present invention is to provide a weather strip that can be surely led out to the outer surface side of the door and does not cause freezing that hinders the opening and closing of the door even in cold regions.

  The present invention is a weather strip attached to a door frame corresponding to a door opening edge of a vehicle body extending from a roof side to an inclined portion of a pillar, the upper end of an outer peripheral protruding edge rising from the outer periphery of the door frame, and the door opening edge. A first lip that has a seal portion that seals a gap between the first and second ends, and a second lip that contacts the upper end of the outer peripheral edge of the door frame. In the weather strip, which is divided and formed with a guide groove between the two lips for guiding and flowing down the water flowing in from the roof of the vehicle body, the guide groove is positioned near the lower end of the inclined portion of the pillar. A dam crossing the groove is provided so that the water flowing down the guide groove can be led to the outer surface of the door. In addition, a substantially V-shaped notch is formed at the front edge of the first lip immediately before the upstream side of the dam. Snow accumulated on the roof of the vehicle body melts, and most of the melted water flows into the guide groove of the weather strip, flows down the guide groove, is dammed by the dam, and is discharged to the outer surface side of the door. When a part of the snowmelt flows down along the leading edge of the first lip of the weather strip that abuts the door opening edge, the snowmelt is notched in the leading edge of the first lip immediately before the dam. It flows in the groove bottom direction of the guide groove along the slanted portion of the guide groove, is received by the dam, merges with the snowmelt water flowing down the guide groove, and is discharged to the outer surface side of the door without passing through the dam.

  The dam is formed in a direction that obliquely crosses the guide groove so that the second lip side is positioned lower than the first lip side. By forming the direction of the dam in this way, the dam can smoothly guide the melted water to the door outer surface side.

  The notch is formed in a shape that gradually becomes deeper from the upstream side of the dam toward the dam and rises along the dam from the deepest portion (claim 3). Snowmelt water that has flowed along the sloped portion of the notch is dammed by the standing portion, and is surely prevented from flowing over the dam.

  The weather strip is a weather strip attached to a door frame corresponding to the door opening edge of the vehicle body extending from the roof side to the inclined portion of the front pillar. The trouble of opening and closing the door due to freezing of snow melt is likely to occur at the front door, and the present invention is particularly effective when applied to a weather strip corresponding to the front pillar.

  An embodiment of the present invention will be described with reference to FIGS. The door opening edge 2 of the vehicle body and the structure of the door frame 1 to which the weather strip 3 is attached are substantially the same as the conventional structure described above, and detailed description thereof will be omitted, and the structure of the weather strip will be mainly described. .

  The weather strip 3 attached to the door frame 1 facing the door opening edge from the roof side R of the vehicle body to the inclined portion of the front pillar P is made of soft rubber, for example, sponge rubber, and is swelled from the attachment base 31. A hollow seal portion 32 is provided, and a seal portion 33 extending from the attachment base portion 31 and having a thick wall and branching into a first lip 34a and a second lip 34b is provided. Between both the lips 34a and 34b, a guide groove 4 having a substantially U-shaped cross section is formed in series in the longitudinal direction of the weather strip 3.

  The weather strip 3 has a mounting base 31 fixed to a flat weather strip mounting surface 12 formed inside the outer peripheral projection edge 11 of the door frame 1 by a clip C. Then, when the door is closed, the hollow seal portion 32 is pressed against a portion slightly recessed from the opening outer end of the door opening edge 2 including the front pillar P. When the door is closed, the side surface of the first lip 34 a is pressed against the outer opening edge of the door opening edge 2, and the second lip 34 b has the leading edge on the inner surface of the upper end of the outer peripheral edge 11 of the door frame 1. Press contact.

  A dam 5 for blocking the guide groove 4 is formed in the guide groove 4 of the weather strip 3 attached to the front end inclined portion of the door frame 1 facing the inclined portion of the front pillar P. The dam 5 is formed at a position corresponding to the upper end of the rear vertical edge of the triangular mirror bracket M provided at the lower front end of the door window in the illustrated example. The dam 5 is plate-shaped and formed in a direction inclined from the first lip 34a side to the second lip 34b side toward the downstream side of the guide groove 4 and crosses the guide groove 4 diagonally.

  The first and second lips 34a, 34b are formed so that the first lip 34a is higher, and the height (upper edge) of the dam 5 is the same as the lip 34a on the first lip 34a side. The second lip 34b is higher than the lip 34b. The end edge of the dam 5 on the second lip 34b side extends higher than the upper end of the second lip 34b, and comes into contact with the upper end edge of the outer peripheral protruding edge 11 of the door frame 1 so as to wrap it.

  A notch 6 is formed at the front edge of the first lip 34 a at a position immediately upstream of the dam 5. The notch portion 6 is substantially V-shaped and includes an inclined portion 61 whose depth gradually increases from the upstream side of the dam 5 toward the dam 5 and an upright portion 62 that rises substantially vertically from a position along the dam 5. Thus, the height of the upright portion 62, that is, the depth of the deepest portion is approximately 2 mm.

  The weather strip 3 is formed by extrusion molding from the upper part to the notch portion 6 formation portion, and the lower end portion including the notch portion 6 and the dam 5 downstream thereof is formed by die molding. The part is connected to the extrusion molding part.

  In the structure around the door where the weather strip 3 having the above structure is attached to the door frame 1, when the snow accumulated in the roof shape of the vehicle body melts, the snow melt water is received by the guide groove 4 of the weather strip 3, and the snow melt water is received by the front pillar. The guide groove 4 flows down along the inclined portion of P (arrow S1 in FIG. 3). The snowmelt water that has flowed down is dammed up by the dam 5, and the snowmelt water that has been spilled over the upper edge of the outer peripheral projection edge 11 of the door frame 1 overflows to the door outer surface side, and the main body of the door D along the rear vertical edge of the mirror bracket M It is discharged down to the panel 10 (arrow S3).

  Further, a part of the snow-melting water that hangs down from the roof does not reach the guide groove 4 but flows down along the inclination of the front pillar 2 along the tip edge of the first lip 34a that contacts the door opening edge 2. When this snowmelt water reaches the notch portion 6, it travels along the inclined portion 61, is blocked by the flow rising portion 62, flows to the dam 5 side, merges with the snowmelt water flowing down the guide groove 4, and the outer peripheral protrusion of the door frame 1. It is discharged from the upper end of the edge 11.

  Therefore, the snowmelt water flowing down along the front pillar P further flows down along the parting line between the lower half vertical edge of the door opening edge and the front vertical edge of the main body panel 10 of the front door D, which freezes. There is no risk of obstructing the opening and closing of the front door D. The present invention achieves such an effect by merely forming a notch in a part of a conventional weather strip, and does not substantially increase the cost.

  The present invention can also be applied to a weather strip attached to a door frame of a rear door in a vehicle having a rear door. However, since the snowmelt water freezes at the center of rotation at the front door, it tends to hinder opening and closing. Therefore, the present invention is particularly effective when applied to a weather strip attached to a door frame of a front door.

1 shows a weather strip of the present invention, in which FIG. 1 (A) is a perspective view of an essential part of the weather strip alone, and FIG. 1 (B) is an IB-IB line in FIG. 1 (A) in a state of being attached to a door frame. It is principal part sectional drawing in the position in alignment with. It is principal part sectional drawing in the position which follows the II-II line | wire of FIG. 1 (A). 1 is a front side view of an automobile to which the present invention is applied. It is sectional drawing of the weather strip in the position which follows the TT line | wire of FIG.

Explanation of symbols

D Door M Mirror bracket P Front pillar R Roof side 1 Door frame 11 Outer peripheral edge 2 Door opening edge 3 Weather strip 31 Mounting base 32 Hollow seal part 33 Seal part 34a First lip 34b Second lip 4 Guide groove 5 Dam 6 Notch 61 Inclined part 62 Standing part

Claims (4)

A weather strip attached to the door frame corresponding to the door opening edge of the vehicle body from the roof side to the inclined portion of the pillar, and a gap between the upper end of the outer peripheral protruding edge rising from the outer periphery of the door frame and the door opening edge The seal part is divided into a first lip whose tip is in contact with the door opening edge and a second lip that is in contact with the upper end of the outer peripheral edge of the door frame. In the weather strip in which a guide groove that guides and flows down the water flowing in from the roof of the vehicle body is formed between the lips,
In the guide groove, a dam crossing the guide groove is provided at a position near the lower end of the inclined portion of the pillar so that water flowing down the guide groove can be led to the outer side of the blocking door,
A weather strip for automobiles, wherein a substantially V-shaped notch is formed at a position immediately upstream of the dam at the leading edge of the first lip.   2. The automobile weather strip according to claim 1, wherein the dam is formed in a direction that obliquely crosses the guide groove so that the second lip side is positioned lower than the first lip side.   The automobile weather strip according to claim 1 or 2, wherein the notch is formed so as to gradually deepen from the upstream side of the dam toward the dam, and to rise from the deepest part along the dam.   The automobile weather strip according to claim 1, wherein the weather strip is a weather strip attached to a door frame corresponding to a door opening edge of a vehicle body extending from a roof side to an inclined portion of a front pillar.