JPH07101249A - Roof side weatherstrip for automobile - Google Patents

Abstract

PURPOSE:To secure sufficient glass sealing pressure in the die molded corner part of a hollow roof side weatherstrip and prevent a seal part from being permanently deformed into a crushed shape by long-term use. CONSTITUTION:A hollow roof side weatherstrip is provided with a base part 31 locked to a retainer 5, and a seal wall 320 connecting both ends of the base part 31 while being pressed by a door glass 2 at the time of closing a door. In the molded corner part of this roof side weatherstrip, a protrusion 34 is formed on the inner surface more on the interior side than the door glass contact position of the seal wall 320, and a protrusion 35 opposed to the protrusion 34 is formed at the base part 31. When the door glass 2 is pressed to the seal wall 320, the protrusions 34, 35 support the seal wall 320 so as to prevent the excessive deformation of the whole seal wall 320. As to the protrusions 34, 35, only either one of them may be formed instead of both.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof side weather strip for an automobile, and more particularly to a structure of a molding corner portion thereof.

[0002]

2. Description of the Related Art In a frameless door vehicle as shown in FIG. 1, a roof side weather strip (hereinafter simply referred to as a weather strip) 3 is mounted in series on a roof side 1 from a front pillar 1A to a quarter pillar 1B. Therefore, the periphery of the door glass 2 is sealed when the door is closed.

Although the weather strip 3 is extruded,
In the corners, especially the corner C on the rear side where the curvature is large,
Since the cross-sectional shape is irregularly deformed when bent into a corner shape, the mold forming corner portion 3A is interposed.

FIG. 3 shows a general extruded portion of the weather strip 3. The base portion 31 is fixed to the retainer 5 fixed to the body panel 4, and the seal portion forms a hollow body with the base portion 31. 32 are provided. A weather strip 3 of this type is generally provided with a seal lip 33 whose one end is in contact with the inner surface of the door glass 2 and the other end is in contact with the door opening trim 6. In the hollow seal portion 32, bridges 37 and 38 are provided to supplement the rigidity of the seal portion 32.

[0005]

However, since it is difficult to mold a hollow body whose inside is partitioned by a bridge in the molding corner portion 3A by molding, as shown in FIG. Bridges are not formed on the.

Therefore, the seal portion 32 is easily deformed when pressed by the door glass 2, the glass seal pressure is lower than that of the general portion, and the seal portion 32 is repeatedly deformed by opening and closing the door. There is a risk that the seal will be bent and the sealability will further deteriorate.

[0007] Therefore, the present invention has been made to solve the problems to make the corner portion of the weather strip into a structure which is moldable and has an appropriate glass sealing pressure which is not different from that of the general portion.

[0008]

According to the present invention, as shown in FIG. 2, a projection 34 is formed on the inner surface of the molding corner 3A on the inner side of the vehicle than the position where the door glass 2 is pressed, and the projection 31 is formed on the base 31. A protrusion 35 that faces 34 is formed. Note that only one protrusion may be provided.

[0009]

In the die-molding corner portion 3A, the space portions on both sides of the protrusions 34 and 35 are communicated with each other by the gap 36 between the protrusions 34 and 35, and therefore, the die-molding can be performed using the core. When pressed by the door glass 2, the protrusions 34 and 35 come into contact with each other to support the seal wall 320 and perform the same operation as the bridge.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
The corner portion C on the rear side is connected by the molding corner portion 3A. The general portion of the weather strip 3 has the same structure as the conventional product as shown in FIG. This general part is obtained by extruding sponge rubber.

As shown in FIG. 2, the molding corner portion 3A has a base portion 3 which is retained by a retainer 5 fixed to the body panel 4.
1 and a seal portion 32 that forms a hollow body by the seal walls 320 connecting both ends of the base portion 31 in the width direction, and the peripheral edge of the door glass 2 is pressed when the door is closed; Door glass 2
It has a seal lip 33 that abuts on the inner surface of the vehicle and the tip on the inside of the vehicle abuts on the door opening trim 6.

A rib-shaped projection 34 is formed on the seal wall 320 on the inner surface of the interior side of the door glass 2 contacting position. A rib-shaped protrusion 35 is formed on the base 31 so as to face the protrusion 34 with a slight gap 36 therebetween.

In this mold forming corner portion 3A, one end of an extrusion-molded weather strip is inserted into both ends of a cavity of a mold having a cavity for molding the outer periphery of the corner portion, and right and left circles are inserted in the cavity. It is formed by setting a core that forms the inner surface of the corner portion 3A in which the arc-shaped space portion communicates with the narrow gap 36, and injecting a sponge rubber material into the cavity. After molding, the mold is opened and the core 36 is pulled out so as to widen the gap 36 between the protrusions 34 and 35. In the figure, 310 is a core extraction hole. By molding the corner portion 3A, both the extrusion weather strips are connected via the corner portion 3A.

However, when the seal wall 320 is pushed in by the door glass 2 when the door is closed, the seal wall 320 is projected by the projection 3.
Since it is supported by Nos. 4 and 35, sufficient glass sealing pressure can be obtained, and the seal wall 320 is not permanently deformed into a crushed shape due to repeated excessive deformation as in the conventional case, and the sealability of both ends of the seal lip 33 is improved. Is maintained well.

Although the projections are formed on both the seal portion and the base portion in the above embodiment, the projections may be formed on only one of them. However, in this case, the protrusion has a height facing the other side with a slight gap.

[0016]

EFFECTS OF THE INVENTION In a die-molded corner portion of a hollow weatherstrip, a sufficient glass sealing pressure can be obtained without a large deformation of the entire corner portion when a door glass is pressed, and the corner portion can be used for a long period of time. Is prevented from being permanently deformed into a crushed shape.

[Brief description of drawings]

FIG. 1 is a side view of an automobile to which a roof side weather strip of the present invention is applied.

FIG. 2 is a view of a roof side weather strip of the present invention.
It is sectional drawing of the corner part C of.

FIG. 3 is a sectional view of a general portion of the roof side weather strip of the present invention.

FIG. 4 is a view of a conventional roof side weather strip corresponding to FIG. 2.

[Explanation of symbols]

 1 Roof Side 2 Door Glass 3 Roof Side Weather Strip 3A Molding Corner 31 Base 32 Sealing 320 Seal Wall 34, 35 Protrusion

Claims (1)

[Claims] 1. A base portion mounted along the roof side of an automobile, a hollow body formed by the base portion, and a seal portion against which the peripheral edge of the door glass is pressed when the door is closed. The corner portion is formed by molding. In the roof side weather strip, a protrusion is formed on the inner surface of the inner side of the vehicle inside the contact position of the door glass in the seal portion of the molding corner portion, and a protrusion facing the above protrusion is formed on the base portion. A characteristic roof side weather strip for automobiles.