JPH03259B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a body side weather strip having a welt, and more specifically to the structure of a flange retaining lip protruding into the welt having a substantially U-shaped cross-section. be.

Generally, in the vehicle shown in FIG.
Although a body side weather strip with a welt is used at the contact area between the door and the opening edge of the vehicle body, the number of panels inserted into the welt may differ depending on the door position. That is, as seen in the example of the weather strip shown in Fig. 2, the welt 2 is made of solid rubber and has a substantially U-shaped cross section, and the inner facing surface has a flange to be inserted. The grooved welt integrally has flange retaining lips 3, 3 and 4, 4 which are inclined toward the bottom side from the side wall of the grooved welt. A core metal 5 is embedded in the welt 2 for both reinforcement and shape retention. 6 is a seal lip, and this seal lip 6 comes into contact with a mating panel such as a window glass to seal the interior and exterior of the vehicle. Note that the seal lip 6 may be provided on the side wall of the welt 2 in some cases. The thickness of the flange inserted and fixed into the welt 2 based on the above structure may vary depending on the position of the opening edge of the vehicle body, as described above.For example, in part A shown in Fig. 1, three flanges are overlapped. It is inserted into the welt 2, and in the B part of the figure, two flanges overlap and are similarly inserted into the welt 2, and in the parts other than A and B mentioned above, one flange is inserted into the welt 2. It turns out. This state is shown in a, b, and c of FIG. 2, respectively. However, if the structure of the welt 2 is formed to be suitable for inserting one flange, it becomes difficult to insert two or three flanges, and if the welt 2 is forcibly inserted, the welt 2 will spread laterally. However, there are drawbacks that can cause poor appearance or poor sealing with the door panel. Furthermore, the size of the welt 2 itself is restricted depending on the vehicle, and there is no freedom in design, which is one of the reasons for the above-mentioned drawbacks. Conventionally, to deal with the above, the third
As shown in the figure, an attempt was made to make the tips of the flange retaining lips 3', 3' and 4', 4' thin to prevent the welt from expanding when the flange thickness is large; However, the thick bases 3a, 4a of the flange retaining lips 3' and 4'
Since it comes into contact with the flange, it has a large insertion force, and the problem remains that the holding force is weak when the flange thickness is small.
Furthermore, as shown in Fig. 4, the flange retaining lip 3
If b, 3b and 4b, 4b are entirely formed using a flexible material, the flange thickness will be large and it will be easier to insert, but the pressing force against the flange will be reduced and the holding ability will deteriorate. It is. Another countermeasure is to cut off the flange retaining lips 3 and 4 in the part where the flange is thick enough to be inserted, for example, part A in Fig. 1, but this is cumbersome and may reduce productivity. There is.

The present invention eliminates the various drawbacks of the conventional body side weather strips and provides a welt 2
The object of the present invention is to provide a device that has good operability and holding power regardless of the thickness of the flange to be inserted into the device. Embodiments of the present invention will be described below based on the drawings.

FIG. 5 shows a basic embodiment of the invention. In the figure, in order to clarify the structure of the welt part, only the same part is shown, and seal lips and the like are omitted. The welt 12 is a grooved welt made of solid rubber and has a substantially U-shaped cross section.
Flange holding lips 13, 13 and 14, 14 are formed so as to be inclined toward the bottom portion 12b from the side wall 12a. In addition, the flange retaining lips 13, 14
is not limited to the four illustrated, but may be two or more. Numeral 15 is a core metal which serves both to reinforce and maintain the shape of the welt 12, and is embedded within the welt 12. In the middle of the flange holding lips 13 and 14, there is a thin wall portion 13 extending along the longitudinal direction of the weather strip.
a, 13a and 14a, 14a are formed to constitute an easily bendable portion. Said thin part 13
The positions of a, 13a and 14a, 14a are such that the maximum thickness of the flange 16 inserted into the welt 12 can be maintained, and as shown in FIG. 13a,
The flange holding lips 13, 13 and 14, 14 are bent at bending points 13a, 14a, 14a, respectively. At this time, each flange retaining lip 13,1
The contact portions between the flange 16 and the flange 16 are in surface contact, and a strong frictional force is generated between them. Therefore, as shown in FIG. 7, when an external force is applied to pull the flange 16 upward, the flange holding lips 13 and 1
Frictional force based on surface contact between the bent portions 4 and 14 and the flange 16 acts to generate a force that prevents the flange 16 from coming off. In addition, the flange retaining lip 13,
13 and 14, 14 are the bottom part 12b of the welt 12
The base 1 of each flange retaining lip 13, 13 and 14, 14 is formed so as to be inclined to the side.
3c, 13c and 14c, 14c have a certain strength, the bases 13c, 14 of the respective flange retaining lips 13, 14 are stronger than in the state shown in FIG.
14c cannot be reversed upward unless a very strong external force is applied, and therefore it can be said that the effect of preventing the welt 16 from coming off is great.

FIG. 8 shows another embodiment of the present invention, in which the same components as in the basic embodiment shown in FIG. 5 are given the same reference numerals. In this example,
Flexible materials 17, 17, such as soft sponges, extend along the longitudinal direction of the weather strip in the middle of the flange holding lips 13, 13 and 14, 14.
and 18, 18 are inserted, and this flexible material 1
7 and 18 form easily bendable portions similar to the thin wall portions 13a and 14a of the previous embodiment.

It goes without saying that the insertion positions of the flexible members 17 and 18 are positions where the maximum thickness of the flange plate can be maintained, and the operation mode is also the same as that described in the basic embodiment.

As explained in detail above, the present invention provides a body side weather strip having a welt, which is placed in a position where the maximum plate thickness of the inserted flange can be maintained with respect to the flange retaining lip provided within the welt. By providing an easily bendable part, the flange can be inserted smoothly without being affected by the plate thickness, and the flange and flange retaining lip form surface contact and generate frictional force. It has various advantages such as no deterioration in its holding ability against the flange and good workability during assembly, and is highly effective when applied to automobile body side weather strips. If

[Brief explanation of the drawing]

Fig. 1 is an external view of a normal automobile, Fig. 2 is a cross-sectional view showing an example of a conventional body side weather strip, and Figs. 3 and 4 are cross-sectional views showing modified examples of the conventional weather strip. 5 is a sectional view showing a basic embodiment of the present invention, FIGS. 6 and 7 are sectional views showing the operation mode of the basic embodiment, and FIG. 8 is a sectional view showing another embodiment of the present invention. FIG. 12... Welt, 13, 14... Flange holding lip, 13a, 14a... Thin wall portion, 15...
Core metal, 16... flange, 17, 18... flexible material.

Claims (1)

[Claims] 1. A weatherstrip in which a flange holding lip is formed in a groove of a grooved welt having a substantially U-shaped cross section and is inclined toward the bottom side from the side wall of the grooved welt, the middle part of the flange holding lip. An automobile body side weather strip characterized in that an easily bendable part that can be bent when the flange is inserted is provided at a position where the maximum thickness of the flange plate inserted into the welt can be maintained. P.