JPH0517323Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an automobile door seal structure for sealing a door that is opened and closed with respect to an opening in a vehicle body.

(Prior Art) Conventionally, as the above-mentioned example of the door seal structure for an automobile, there is one described in, for example, Japanese Utility Model Application Publication No. 152531/1983.

In other words, in a flat surface automobile door structure, a door sash suction prevention piece that protrudes upward is integrally formed on the inner end of the upper edge of the door sash, and also prevents the door sash from being sucked out due to the difference in air pressure between the inside and outside of the vehicle during high-speed driving. When the door sash tries to be sucked out outward (note that the door body is locked to the vehicle body, there is no possibility of suction), the inverted L cross section that locks the suction prevention piece mentioned above.
There is a type in which a letter-shaped locking piece is joined to the outer roof rail of the vehicle body, but there is a problem in that a sufficient sealing performance of the vehicle body opening cannot be obtained.

(Purpose of the invention) This invention uses a unique double seal structure to improve the sealing performance of car body openings, close the gap between the car body and the door, and further improve the air pressure difference between the inside and outside of the car. An object of the present invention is to provide a door seal structure for an automobile that can prevent door sills from being sucked out due to.

(Structure of the invention) This invention is a door seal structure for an automobile that seals a door having a door panel, a door glass, and a door sash. A hollow weather strip is installed via a retainer in the opening of the vehicle body facing the
A protrusion is formed on the upper edge of the door chassis, which faces the central part of the weather strip, to face a hollow part formed in the weather strip and protrude upward so as to deform the hollow part. a first seal portion whose central portion is crushed by the protrusion when the door is closed;
A second seal part is provided which contacts the outer end of the door sash by forming the first seal part and closes the gap between the vehicle body and the door, and the base of the second seal part contacts the protrusion when the door is closed. The present invention is characterized by an automobile door seal structure configured to be in contact with an outer end of a door sash on the outside of the vehicle.

(Effect of the invention) According to this invention, when the door is closed to the opening of the vehicle body, the protrusion on the upper edge of the door sash collapses the hollow center of the hollow weather strip to form the first sealing part. Due to this deformation of the weather strip, the base of the second seal part contacts the outer end of the door sash on the outside of the vehicle and closes the gap between the vehicle body and the door.

As a result, the double seal structure of the first seal part and the second seal part mentioned above has the effect of improving sealing performance, and in addition, the second seal part mentioned above has the effect of improving sealing performance between the vehicle body and the door. This has the effect of closing the gap.

Furthermore, when the door sash is being sucked out, a part of the weather strip located between the retainer and the protrusion, that is, both of the above-mentioned seals, act to stretch against the door sash suction force.
The movement of the protrusion in the door sash suction direction is prevented, and it is possible to reliably prevent the door sash from being sucked out due to a difference in air pressure outside the vehicle interior.

Incidentally, the above-mentioned suction force that acts on the door sill is generated when the car is running at high speed, and as a result of the increase in the flow velocity of the air flowing on the glass surface outside the cabin, the air pressure on the outside glass surface is higher than the inside pressure. As a result, the door sash is pushed outward by the pressure inside the vehicle, and this phenomenon increases the gap between the door sill and the vehicle body, increasing the sealing pressure of the sealing member disposed in this gap. However, with the above configuration, this invention effectively seals the gap between the door sash and the opening of the vehicle body while reliably preventing the door sash from moving outward. There is an effect that can be done.

(Example) An example of this invention will be described in detail below based on the drawings.

The drawings show a door seal structure for an automobile, and in FIG. 1, a door 4 having a door panel 1, a door glass 2, and a door sash 3 is attached to an opening 6 of a vehicle body 5 so as to be openable and closable.

FIG. 2 shows an enlarged cross section of the upper edge 3a of the door sash 3 and the corresponding vehicle body part, and shows a roof rail inner 8 on the passenger compartment side of the roof rail outer 7.
A roof rail 10 having a closed cross section 9 by joining the
At the same time, a roof panel 12 is connected to the upper joint flange portion 11 of the roof rail 10, and a roof molding 14 is provided in the recess 13 between the upper end of the roof rail outer 7 and the outer end of the roof panel 12. are doing.

Further, a seaming welt 17 having a core metal 16 inside is fitted into the lower joint flange portion 15 of the roof rail 10 described above.

By the way, the upper edge 3a of the door sash 3 mentioned above
is formed so that its upper surface is substantially parallel to the door sash suction direction (direction of arrow a in FIG. 2), and the lower surface of the opening 6 of the vehicle body 5, that is, the opening forming portion 7a of the roof rail outer 7, facing the door sash upper edge 3a. A retainer 19 is attached using a screw 18.

This retainer 19 has a core metal 2 having a substantially C-shaped cross section.
A hard synthetic resin jacket 21 is integrally joined to the outer surface of the retainer 19, and the groove 22 of the core bar 20 in this retainer 19 has a single hollow shape (a shape having only one hollow part). A weather strip 23 is provided.

On the other hand, as is clear from FIG. 2, the above-mentioned upper edge 3a of the door sash is roll-formed from a single metal plate, and there are downward recesses 2 on the outside of the center.
4, and a closed cross section 25 and an upward recess 26 located on the closed cross section 25 are formed inside the center, and a glass launch channel 27 is formed in the downward recess 24, and a glass launch channel 27 is formed inside the center. A weather strip 28 is provided in each of the recesses 26.

Note that the virtual line α shown in FIG. 2 indicates the free state of the weather strip 28 mentioned above.

A portion of the upper edge portion 3a of the door sash constructed in this manner that faces the center portion of the weather strip 23 on the vehicle body side is provided with an upper portion that faces the hollow portion formed in the weather strip 23 and deforms the hollow portion. A protrusion 29 that protrudes in an inverted U-shape toward is integrally formed. That is, this protrusion 29 is integrally formed in a direction perpendicular to the door sash suction direction shown by arrow a in FIG.

Furthermore, the above-mentioned weather strip 23 has a first seal part 23a formed by crushing the center part by the above-mentioned protrusion part 29 when the door is closed, and the formation of this first seal part 23a makes it contact the outer end part 3b of the door sash. It is provided with a second seal part 23b that is in contact with the vehicle body 5 and closes the gap between the vehicle body 5 and the door 4, and the base of the second seal part 23b is connected to the above-mentioned protrusion 29 when the door is closed.
The outer end portion 3b of the door sash is configured to be in contact with the outer end portion 3b of the door sash on the outside of the vehicle.

Note that in FIG. 2, arrow b indicates the opening/closing direction of the door 4.

The illustrated embodiment is configured as described above,
The action will be explained below.

As shown in FIG. 2, when the door 4 is closed, the above-mentioned structure is formed so as to protrude upward from the upper surface of the door sash upper edge 3a, that is, the upper surface formed approximately parallel to the door sash suction direction (see arrow a). The protruding portion 29 crushes and deforms the hollow space in the central portion of the weather strip 23 on the vehicle body side as shown in the figure, so that the weather strip 23 is formed with a first seal portion 23a.

Further, by forming the first seal portion 23a described above, in other words, by deforming the weather strip 23 by the protrusion 29, a second seal portion 23b is formed in the weather strip 23. Furthermore, the base portion of the second seal portion 23b contacts the door sash outer end portion 3b on the vehicle outer side of the projection portion 29.

As a result, both the above-mentioned first seal part 23a and the protrusion part 29, as well as the above-mentioned second seal part 23b
Both the door sash outer end 3b and the door sash outer end 3b are sealed, and such a double seal structure has the effect of improving sealing performance.

Further, the above-mentioned second seal portion 23b can reliably close the gap between the door sash outer end portion 3b and the vehicle body 5.

It goes without saying that the above-mentioned opening 6 can also be sealed by the weather strip 28 on the door 4 side and the inner weather strip 30 on the vehicle body side.

Moreover, when the vehicle is running at high speed, the door sash 3 tends to be sucked out in the direction of the arrow a in FIG. , that is, both the above-mentioned seal parts 23a and 23b are compressed by the above-mentioned protrusion 29, and exert a stretching action against the door sash suction force, so that movement of the protrusion 29 in the door sash suction direction is prevented. Therefore, it is possible to reliably prevent the door sash 3 from being sucked out due to the difference in air pressure between the inside and outside of the vehicle.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, and FIG. 1 is a perspective view of an automobile equipped with a door seal structure, and FIG. 2 is an enlarged sectional view of a main part taken along the line - in FIG. 1...Door panel, 2...Door glass, 3...
Door sash, 3a...Door sash upper edge, 3
b... Door sash outer end, 4... Door, 5...
Vehicle body, 6...opening, 19...retainer, 23...
...Weather strip, 23a...First seal part,
23b...Second seal part, 29...Protrusion part.

Claims (1)

[Claims for Utility Model Registration] An automobile door seal structure for sealing a door 4 having a door panel 1, a door glass 2, and a door sash 3, wherein the door sash 3 has an upper surface formed substantially parallel to the door sash suction direction a. A hollow weather strip 23 is disposed via a retainer 19 in the opening 6 of the vehicle body 5 facing the upper edge 3a, and the upper edge 3a of the door sash facing the center of the weather strip 23 is provided with: A protrusion 29 that faces the hollow part formed in the weather strip 23 and protrudes upward so as to deform the hollow part.
The weather strip 23 has a first seal portion 23a formed by crushing the center portion with the protrusion 29 when the door is closed, and a first seal portion 23a that contacts the outer end portion 3b of the door sash. A second seal part 23b is provided which is in contact with the vehicle body 5 and closes the gap between the vehicle body 5 and the door 4, and the base of the second seal part 23b is connected to the door sash outer end 3b on the vehicle outside of the projection part 29 when the door is closed. An automobile door seal structure configured to be in contact with.