JPH04163229A - Weatherstrip - Google Patents

Abstract

PURPOSE:To prevent the fall of a trim part caused by unbalanced load applied onto a weatherstrip by providing three kinds of lips at the pail-shape trim part inserted into the flange of a body panel, and setting the wall thickness of one part in the third lip to be large. CONSTITUTION:A weatherstrip 10 is formed of a gutter-shape trim part 11 inserted in a flange 2 erected at the lower part of a door sash panel 1, a hollow seal part 12 brought into contact with the upper end of elevated door glass 3 to perform sealing, a lip-shape seal part 13 brought into contact with the inner surface of the door glass 3 to perform sealing, and a design lip 19 brought into contact with the door sash panel 1 to perform sealing. The trim 11 is protrusively provided with a first lip 15 at the inner surface opening edge part of the outdoor-side side wall part thereof, and a second lip 16 at the inner surface innermost part thereof; and a third lip 17 with its tip extended as far as around the second lip 16 is further provided protrusively at the inner surface opening edge part of the interior-side side wall part of the trim part 11. In this third lip 17, the wall thickness of a part 17a from the tip to the intermediate part is formed larger than that of a part 17b from the base end to the intermediate part.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a gutter-like trim for inserting and fixing into a flange of an automobile body panel, such as a glass run attached to a door sash panel. The present invention relates to a weather strip having a portion.

[Prior Art] Examples of conventional weather strips of this type include the following.

The weather strip 40 shown in FIGS. 6 and 7 is a glass run that is housed in a door sash panel on the roof side, and is inserted into a flange 2 erected downward at the bottom of the door sash panel 1. a gutter-shaped trim part 41 for fixing the door glass 3; and a hollow seal part protruding from the upper end of the indoor side wall of the trim part 41 for abutting and sealing the upper end of the door glass 3 that moves up and down. 42 and the trim part 4
A lip-shaped seal part 43 is provided which projects from the lower end of the side wall part on the outside of the door 1 and comes into contact with the inner surface of the door lath 3 for sealing. The trim portion 41 is formed of solid rubber and an insert fitting 44 embedded therein,
A first lip 45 is provided at the opening edge of the inner surface of the indoor side wall, a fourth lip 48 is provided at the center of the inner surface, and a second lip 46 is provided at the innermost part of the inner surface. A second lip 47 whose tip extends to the vicinity of the second lip 46 is integrally provided on the opening edge of the inner surface of the portion and is integrally provided with the solid rubber. The second lip 47 is formed so that the thickness of the entire portion from its tip to its base is approximately equal (
See Publication No. 2-156522>.

The weather strip 50 shown in FIGS. 8 and 9 is a glass run attached to the door sash panel on the pillar side, and includes an insert fitting 54 similar to the weather strip 40 and the first to fourth lips 155. - 58, a lip-shaped seal part 52 for slidingly contacting and sealing the outer surface of the door glass 3 that moves up and down, and a lip-shaped sealing part 53 for slidingly contacting and sealing the inner surface of the door glass 3. It is equipped with

[Problems to be Solved by the Invention] However, in any of the weather strips 40° 50 described above, the inner thickness of the second lip 47° 57 of the trim portion 11.51 was uniform; Flange 2
When the second lip 47.57 is inserted into the flange 2, the second lip 47.57 curves into a substantially arc shape, so that the contact area with the indoor side surface of the flange 2 is not very large, and the second lip 47.57 makes the contact area with the indoor side surface of the flange 2 The pressing force was also small. Therefore, the door glass 3 rising from below comes into sliding contact with the lip-shaped seal 43 as shown in FIG. When the weatherstrips 40, 50 are subjected to an uneven load by entering and sliding between the trim portions 52 and 53, the second lip 47° 57 is unable to support this uneven load and bends. 41 and 51 sometimes fell toward the outside of the room, as shown by the chain lines in the figure.

As the trim portions 41 and 51 fall, the pressure force applied to the door glass 3 by the lip-shaped seal portion 43 becomes stronger in the weather strip 40 on the roof side, and the load required to completely close the door glass 3 (hereinafter referred to as glass There is a problem in that the closing load increases.Similarly, in the weather strip 50 on the pillar side, the door glass 3
There is a problem in that the resistance (hereinafter referred to as glass sliding resistance) increases when the glass slides between the two cup-shaped seal portions 52 and 53. Also, which weather strip 40.
50 also had the problem that the decorative lip 49.59 protruding from the upper end of the side wall on the indoor side of the trim part 41.5 was separated from the door sash panel 1, creating a gap and resulting in poor appearance. .

An object of the present invention is to solve the above-mentioned problems, and to create a new system in which a trim part inserted and fixed into a flange of a body panel is hardly toppled by an uneven load applied to a weather strip, and which does not cause functional or appearance defects. The purpose is to provide a useful weather strip.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a weatherstrip having a gutter-like trim portion for inserting and fixing to a flange of a body panel. A first lip made of solid rubber protrudes from the opening edge of the inner surface of one of the side walls, and a solid rubber lip is provided at the inner depth of the inner surface.
A second lip made of solid rubber is protruded from the opening edge of the inner surface of the other side wall of the trim part, and a second lip made of solid rubber and whose tip extends to the vicinity of the second lip is provided. The second lip has a structure in which the thickness of the portion from the tip to the middle is larger than the thickness of the portion halfway from the base end.

Here, as the solid rubber material forming the first and second lips, non-staining rubber with excellent weather resistance is suitable;
Examples include PDM rubber and CR rubber.

[Function] In the weatherstrip of the present invention, since the thickness of the part from the tip of the second lip to the middle is made larger than the thickness of the part part way from the base end, when the trim part is inserted into the flange, The second lip is bent so as to be bent at the boundary between the two portions, and substantially the entire portion from the tip to the middle comes into surface contact with the side surface of the flange with a large contact area. Further, since the wall thickness is large in the part from the tip to the middle, the force with which the flange is pressed is also larger than in the conventional example. This second lip, the first lip, and the second lip strongly support the flange at three points.

Therefore, even when an unbalanced load is applied to the weatherstrip, each lip including the second lip can support this unbalanced load, and the trim portion hardly falls down.

[Embodiments] Two embodiments of weather strips embodying the present invention will be described below with reference to the drawings.

(First embodiment) Weather strip 1 of the first embodiment shown in Figs. 1 to 3
0 is a glass run attached to the door sash panel 1 on the roof side, and a gutter-shaped trim part 11 is inserted into and fixed to a flange 2 erected downward at the bottom of the door sash panel 1. and a hollow sealing portion 12 that protrudes from the upper end of the outdoor side wall of the trim portion] 1- for abutting and sealing the upper end of the door glass 3 that moves up and down;
A lip-shaped seal portion 13 protrudes from the lower end of the indoor side wall portion of the I-rim portion 11 for abutting against and sealing the inner surface of the door glass 3; It consists of one designed lip that protrudes from the upper end and comes into contact with the door sash panel 1 for sealing. Each of these parts is formed by coextrusion molding.

The trim section 11 has two side walls and a bottom wall, which are made of EPDM solid rubber and an insert fitting 14 embedded therein.

A first lip 15 is integrally protruded from the EPDM solid rubber at the opening edge of the inner surface of the indoor side wall portion of the trim portion 11, and a fourth lip 1-8 is provided at the center of the inner surface.
is similarly provided protrudingly, and a second lip 16 is provided at the inner deep part of the inner surface.
is also protruding.

A second lip 17 whose tip extends to the vicinity of the second lip 16 is also protruded from the opening edge of the inner surface of the indoor side wall portion of the trim portion 11, and the second lip 17 extends halfway from the tip. The thickness of the portion 17a is larger than the thickness of the portion 17b halfway from the base end (approximately the same thickness as the conventional second lip).

The hollow seal portion 12 has a clay wall portion and a side wall portion made of EPDM solid rubber, and a lower wall portion made of EPDM sponge rubber, and the upper end of the door glass 3 comes into contact with this lower wall portion. Further, the lip-shaped seal portion 1
3 is made of EPDM sponge rubber, and the designed lip 19 is made of EPDM solid rubber.

According to the weather strip 10 of the first embodiment configured as described above, the second lip 17 has only one lip on the indoor side wall portion of the trim portion 11, and the number of lips is not increased. The workability when inserting the part 11 into the flange 2 is good.

Further, as described above, since the wall thickness of the part 17a from the tip of the second lip 17 to the middle is made larger than the wall thickness of the part 17b from the base end to the middle, when the trim part 11 is inserted into the flange 2, Two lips 17 have both values 17a, 17
It bends at the boundary b, and substantially the entire portion 17a comes into surface contact with the indoor side surface of the flange 2 with a large contact area. Further, since the portion 17a has a large wall thickness, the force with which the flange 2 is pressed is also larger than that of the conventional example. Then, this second lip 17, the first lip 15, and the fourth lip 18
and the second lip 16 pinch the flange 2 at four points,
In particular, the first lip 15, the second lip 16 and the second lip 1
7 strongly supports three points.

As a result, as shown in FIG.
Even when an unbalanced load is applied to the rim part 1, the lips including the second lip 17 can fully support this unbalanced load, so that the rim part 11 hardly falls toward the outdoor side. Therefore, the pressing force of the lip-shaped seal portion 1B and the door glass 3 is kept substantially constant, and the glass closing load does not increase. Moreover, it goes without saying that the decorative lip 19 will not be separated from the door sash panel 1, resulting in poor appearance. In addition,
Even when the trim portion 11 tends to fall toward the indoor side due to other causes, the fall can be similarly prevented.

(Second Embodiment) The weather strip 20 of the second embodiment shown in FIGS. 4 and 5 is a glass run attached to a door sash panel on the pillar side, and is made of an insert metal fitting similar to the weather strip 10 described above. 24 and first to fourth lips 25 to 2
8, a slanted lip-shaped seal section 22 that comes into sliding contact with and seals the outer surface of the door glass 3 that moves up and down, and a slanted lip-shaped seal section 23 that comes into sliding contact with and seals the inner surface of the door glass 3. , and a designed lip 29 for contacting and sealing the door sash panel 1.

According to this embodiment, even when the door glass 3 slides between the two cup-shaped seal portions 22 and 23 as shown in FIG. As in the example, each lip including the second lip 27 fully supports this unbalanced load, so the trim portion 21 rarely falls toward the outdoor side. Therefore, the glass sliding resistance is kept substantially constant, and the two decorative lips are also prevented from separating from the door sash panel 1.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, and can be modified and embodied as desired without departing from the spirit of the invention.

[Effects of the Invention] Since the weatherstrip of the present invention is configured as described above, the L-rim portion inserted and fixed to the flange of the body panel will hardly fall down due to an uneven load applied to the weatherstrip, and this will improve the functionality and It has an excellent effect of not causing any defects in appearance.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a weather strip of a first embodiment embodying the present invention, FIG. 2 is a cross-sectional view of the same weather strip attached to a door sash panel, taken along line A-A in FIG. Figure 3 is a side view showing the area around the door sash of an automobile, Figure 4 is a sectional view of the second embodiment of the weather strip, and Figure 5 is a side view of the weather strip attached to the door sash panel. FIG. 2 is a cross-sectional view taken along line BB of Figure 6 is a sectional view of the conventional example, Figure 7
The figure is a sectional view of the conventional example attached to a door sash panel, FIG. 8 is a sectional view of another conventional example, and FIG. 9 is a sectional view of the same conventional example attached to a door sash panel. 1... Door sash panel, 2... Flange, 3... Door glass, 10.20.
...Weather strip, 11.21...Trim part, 15.25...First lip, 16.26...Second lip, 17.27...Second lip, 17a, 27a... A part halfway from the tip of the second lip, 17b, 27b... A part halfway from the base end of the second lip. Kawara 3 Diagram Foot 1 Diagram Door Sanshubanenoto Kawara 2 Diagram Tower 4 Diagram Star 5 Diagram 6

Claims (1)

[Claims] 1. In a weather strip having a gutter-like trim part for inserting and fixing into a flange of a body panel, the opening edge on the inner surface of one side wall part of the trim part (11, 21) is made of solid rubber. First lip (15, 25
) is provided protrudingly, and a second lip (16, 26) made of solid rubber is provided protrudingly provided at the innermost part of the inner surface, and a second lip (16, 26) made of solid rubber is provided protrudingly provided on the inner surface of the other side wall portion of the trim portion. A second lip (17, 27) whose tip extends to the vicinity of the second lip is provided in a protruding manner, and the second lip has a wall thickness of a portion (17a, 27a) halfway from its tip to a point halfway from its base end. A weather strip characterized by having a thickness larger than that of the parts (17b, 27b).