JPH04300746A - Welt body side weatherstrip with seal lip - Google Patents

Abstract

PURPOSE:To improve sealing performance by providing a lip piece putting a gap between a seal lip and an interior finish member out of sight, in the vicinity of the lower end part inside a vehicle of a seal lip and on the position where the extreme end outside a vehicle of the interior finish member fixed in a vehicle room can be contacted with. CONSTITUTION:A welt body side weatherstrip 1 is constituted out of a welt 3 of nearly U-shaped section inserted and fixed with a body side panel and a seal lip 5 provided on the outer wall outside the vehicle. The seal lip 5 is provided with a base part 5a fixedly secured on the outer wall of the welt 3, and a hollow seal lip part 5b swollen from the vicinity of the end part to the outside of the vehicle. On the position where the extreme end part 11a of an interior finish member (garnish) 11 fixed in a vehicle room can be contacted with, a lip piece 15 putting a gap part between the extreme end part 11a of the interior finish member 11 and the seal lip 5 out of sight is provided in one body with the seal lip 5. Hereby, regardless of dimentional accuracy of the garnish 11, sealing performance at closing a door is made favorable.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welt body side weather strip with a sealing lip that is attached to the edge of an opening of an automobile.

0002

[Prior Art] Generally, a weather strip is attached to the opening edge of an automobile door in order to maintain airtightness inside and outside the vehicle. One example of this is the welt body side weather strip shown in Fig. 4. The structure of 1 is known. The welt body side weather strip 1 mainly includes a welt 3 having a substantially U-shaped cross section and a seal lip 5 made of a soft material and fixed to the outer wall surface of the welt 3 on the M side outside the vehicle.

[0003] A plurality of lips 7, 7 are provided on the inner wall surface of the welt 3 in a protruding manner for sandwiching a vehicle body side panel (not shown) inserted into the welt 3 from both sides. The other seal lip 5 includes a base portion 5a that is adhesively fixed to the outer wall surface of the welt 3, and a hollow seal lip portion 5 that is provided in a state that bulges out from near the end of the base portion 5a toward the outside of the vehicle M side.
This base portion 5a is adhesively fixed to the outer wall surface of the welt 3 on the outside M side of the vehicle using an adhesive 9.

Reference numeral 11 denotes a garnish as an interior member disposed on the N side of the vehicle, and this garnish 11 is fixed at a position that hides the welt 3 by fixing means not shown. The side tip portion 11a is in contact with the vicinity of the lower end portion of the seal lip portion 5 on the inside of the vehicle.

According to the structure of the welt body side weather strip 1, the vehicle body side panel (not shown) inserted into the welt 3 is held between the lips 7, 7 from both sides, and the door panel (not shown) is inserted from the outside M side of the vehicle. It comes into contact with the hollow seal lip portion 5b of the seal lip 5, and the inside and outside of the vehicle are sealed when the door is closed based on the sealing action caused by the deformation of the hollow seal lip portion 5b.

[0006]

However, in the structure of such a conventional welt body side weather strip 1, the garnish 11 as an interior member has a tip 11a on the outside M side of the garnish 11 that is simply a seal lip. Since the garnish 11 was fixed near the lower end of the inside of the vehicle, the garnish 11
There is a problem that the positioning between the seal lip 5 and the seal lip 5 is not perfect, and the sealing performance and appearance may deteriorate due to variations in the dimensional accuracy of each member.

For example, if the length of the garnish 11 protruding toward the outside of the vehicle M is set long in advance so that no gap is created between the garnish 11 and the hollow seal lip portion 5b, the garnish 11 is fixed in the vehicle interior. When this happens, the tip 11a of the garnish 11 shifts from the normal position shown in FIG. 4 to the position shown in FIG. It is likely to be pushed and displaced to the position shown by the imaginary line a, resulting in poor sealing performance when the door is closed.

On the other hand, if the protrusion length of the garnish 11 toward the outside M side of the vehicle is set short, a gap 13 is generated between the tip 11a of the garnish 11 and the hollow seal lip 5b, as shown in FIG. , the appearance from inside the vehicle will deteriorate.

The displacement of the hollow seal lip portion 5b and the occurrence of the void portion 13 are caused not only by the dimensional accuracy of the garnish 11 but also by dimensional errors during molding of the welt 3 and seal lip 5, and by the welt 3 due to the car body. This is also caused by errors in assembly to the side panel and thermal deformation over time after assembly, and therefore it is a technical item that is difficult to maintain good positioning accuracy between the garnish 11 and the seal lip 5 at all times. It has become.

Therefore, the present invention solves the problems that the conventional welt body side weather strips have, and eliminates the problem of deterioration in sealing performance and appearance due to variations in positioning accuracy between the garnish 11 and the seal lip 5. The object of the present invention is to provide a welt body side weather strip with a seal lip that can prevent the above.

[0011]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cross section approximately U through which a vehicle body side panel is inserted and fixed.
A seal lip, which is formed on the outer side wall surface of a letter-shaped welt, and includes a base portion fixed to the outer wall surface of the welt, and a hollow seal lip portion provided in the vicinity of the end of the base portion to bulge outward from the vehicle side. In the welt body side weather strip provided with the above-mentioned welt body side weather strip, the tip of the interior member fixed in the interior of the vehicle is placed near the lower end of the seal lip on the inside of the vehicle, and at a position where the tip of the exterior of the interior member fixed in the vehicle interior can come into contact with the end of the interior member. The body side weather strip with a seal lip has a structure in which a lip piece is integrally provided to hide a gap formed between the seal lip and the seal lip.

0012

[Function] According to the structure of the welt body side weather strip with a seal lip, the vehicle body side panel is inserted and fixed into the welt, and when the door is closed, the door panel comes into contact with the hollow seal lip of the seal lip from the outside of the vehicle. The interior and exterior of the vehicle are sealed based on the sealing action caused by the deformation of the hollow seal lip.

[0013] If a gap occurs between the outer end of the interior member disposed inside the vehicle body and the hollow seal lip due to variations in the positioning accuracy of each member or the dimensional accuracy of each member, Even if the gap is hidden from the inside by the lip piece provided between the seal lip and the seal lip, the appearance from the inside of the vehicle is maintained well, and the hollow seal of the seal lip is hidden by the tip of the interior member. The lip portion is no longer pushed and displaced toward the outside of the vehicle, so that good sealing performance is maintained when the door is closed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of a welt body side weather strip with a seal lip according to the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same components as in the conventional structure.

FIG. 1 shows a first embodiment of the present invention.
In the welt body side weather strip 1 shown as a whole, 3 is a welt with a substantially U-shaped cross section, and a seal lip 5 made of a soft material is coated with an adhesive 9 on the outer wall surface of the welt 3 on the M side outside the vehicle. It is fixed using. A plurality of lips 7, 7 are protruded from the inner wall surface of the welt 3 for pinching a vehicle body side panel (not shown) inserted into the welt 3 from both sides.

The seal lip 5 includes a base portion 5a that is adhesively fixed to the outer wall surface of the welt 3 on the vehicle exterior M side, and a hollow seal that is provided in a state that bulges from near the end of the base portion 5a toward the vehicle exterior M side. A lip portion 5b is provided.

On the other hand, 11 is a garnish as an interior member disposed on the N side of the vehicle, and this garnish 11
is fixed in a position that hides the welt 3 by a fixing means not shown. A tip portion 11a of the garnish 11 on the vehicle exterior side M side extends to the vicinity of the vehicle interior lower end portion of the seal lip portion 5.

Near the lower end of the seal lip portion 5 on the inside of the vehicle, there is a lip piece 15 which is a characteristic feature of this embodiment.
are integrated. In this example, the lip piece 15
A hollow lip is used as a.

That is, this lip piece 15 is located on the N side of the vehicle interior in the opposite direction from the hollow seal lip portion 5b with respect to the base portion 5a, and can be brought into contact with the tip portion 11a of the garnish 11 fixed in the vehicle interior. It is set in the correct position.

According to the configuration of the welt body side weather strip 1, the welt 3
The vehicle body side panel (not shown) inserted inside is held from both sides by the lips 7, 7, and the door panel (not shown) is inserted into the vehicle outside M.
It comes into contact with the hollow seal lip portion 5b of the seal lip 5 from the side, and the inside and outside of the vehicle are sealed when the door is closed based on the sealing action accompanying the deformation of the hollow seal lip portion 5b.

At this time, the tip 11a on the outside M side of the garnish 11 as an interior member disposed inside the vehicle body extends to the vicinity of the hollow seal lip 5b, and the top surface of the tip 11a of the garnish 11 extends to the vicinity of the hollow seal lip 5b. It is in contact with the lower surface of the lip piece 15.

In the case of this embodiment, an appropriate gap 13 is created in advance between the tip 11a of the garnish 11 and the hollow seal lip 5b. The protruding length is cut short.

Therefore, when the garnish 11 is fixed in the vehicle interior by the gap 13, the hollow seal lip portion 5b is secured to the outside of the vehicle M by the tip portion 11a of the garnish 11.
It is not pushed to the side and displaced, and therefore good sealing performance is maintained when the door is closed.

[0024]The tip 11a of the garnish 11
Even if a gap 13 is formed between the seal lip 5b and the hollow seal lip 5b, the gap 13 is hidden from the inside by the lip piece 15 provided on the seal lip 5, so it looks good from inside the vehicle. can be maintained.

Therefore, according to this embodiment, garnish 1
Even if the gap 13 occurs due to variations in the positioning accuracy between the seal lip 1 and the seal lip 5 or the dimensional accuracy of each member,
This gap 13 can be covered by the lip piece 15, making it possible to improve the appearance. In particular, the generation of the void 13 is caused by the welt 3 and the seal lip 5.
This is caused by dimensional errors during molding, errors in assembling the welt 3 to the vehicle body side panel, and thermal deformation over time after assembly, but the presence of the lip piece 15 eliminates these causes. It is also possible to deal with the occurrence of voids due to

FIG. 2 shows a second embodiment of the present invention,
The basic configuration is the same as that of the first embodiment and is designated by the same reference numerals.

In the case of the second embodiment, a plate-shaped lip piece 17 is provided to protrude diagonally downward from the inside lower end of the seal lip portion 5 toward the N side of the vehicle interior, and when the garnish 11 is assembled, a plate-shaped lip piece 17 is provided. The tip 11a of the garnish 11
Due to the pushing operation, the lip piece 17 is bent in the direction M outside the vehicle, and the upper surface of the tip 11a of the garnish 11 is in contact with the lower surface of the lip piece 17.

By providing such a lip piece 17, it is possible to hide the gap 13 formed between the tip portion 11a of the garnish 11 and the hollow seal lip portion 5b, and the hollow seal Since the lip portion 5b is not deformed, it is possible to maintain high sealing performance inside and outside the vehicle when the door is closed.

FIG. 3 shows a third embodiment of the present invention,
In this third embodiment, a plate-shaped lip piece 19 is provided protruding from near the inner lower end of the seal lip 5 toward the N side of the vehicle interior, and when the garnish 11 is assembled, the upper surface of the tip 11a of the garnish 11 is is set so as to come into contact with the lower surface of the lip piece 19.

By providing such a lip piece 19, the garnish 11 can be easily removed as in the first and second embodiments.
It is possible to hide the gap 13 formed between the distal end portion 11a and the hollow seal lip portion 5b, and it is also possible to maintain high sealing performance inside and outside the vehicle when the door is closed.

In the above embodiment, the seal lip 5 is adhesively fixed to the outer wall surface of the welt 3 on the outside M side of the vehicle, but the present invention is not limited to the above structure, and the two are integrally formed by simultaneous extrusion means. It can also be applied to molded products.

[0032]

As described above in detail, the structure of the welt body side weather strip with seal lip according to the present invention provides the following effects. In other words, there may be a gap between the outer end of the interior member disposed inside the vehicle body and the hollow seal lip due to variations in the positioning accuracy or dimensional accuracy of the interior member, dimensional errors during molding, assembly errors, and assembly errors. Even if a void occurs due to thermal deformation over time, this void will be hidden from the inside by the lip piece provided between the seal lip and the seal, making it difficult to see from inside the vehicle. It is possible to maintain good appearance. Accordingly, it becomes possible to widen the allowable range of variations in the positioning accuracy and dimensional accuracy of the interior members, and furthermore, since high assembly accuracy is not required, manufacturing is facilitated.

Furthermore, the existence of the above-mentioned gap prevents the tip of the interior member from pushing the hollow seal lip of the seal lip toward the outside of the vehicle, so irregular displacement of the seal lip does not occur. Good sealing performance can be maintained when the door is closed.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the structure of a first embodiment of a welt body side weather strip with a seal lip according to the present invention.

FIG. 2 is a sectional view showing the structure of a second embodiment of the present invention.

FIG. 3 is a sectional view showing the structure of a third embodiment of the present invention.

FIG. 4 is a sectional view showing an example of a conventional welt body side weather strip.

FIG. 5 is a sectional view showing an example of an operation mode in a conventional example.

FIG. 6 is a sectional view showing an example of another operation mode in the conventional example.

[Explanation of symbols] 1... Welt body side weather strip, 3... Welt, 5... Seal lip, 5a... Base, 5b... Hollow seal lip portion, 11... Garnish (interior member), 11
a... Tip portion, 15, 17, 19... Lip piece.

Claims (1)

[Claims] Claim 1: A welt having a substantially U-shaped cross section through which a vehicle body side panel is inserted and fixed has a base portion fixed to the outer wall surface of the welt, and a base portion extending outward from the vicinity of an end of the base portion. In a welt body side weather strip provided with a seal lip consisting of a hollow seal lip portion provided in an extended state, the outer end of an interior member fixed in the vehicle interior near the lower end of the seal lip on the vehicle interior side. A welt body side weather strip with a seal lip, characterized in that a lip piece is integrally provided at a position where the parts can come into contact with each other to hide a gap formed between the tip part of the interior member and the seal lip. .