JP2003200737A - Weatherstrip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weatherstrip for an automobile capable of improving sealability in the belt line without damaging sealability and appearance and raising reaction force against a windowpane even if clearance is produced between a weatherstrip end and a glass run due to position deviation at the time of contraction and connection after molding, while omitting molding directly connecting the end of the weatherstrip mounting to the door belt line to the glass run and reducing the number of processes and manufacturing cost without requiring smoothing treatment for molded part. <P>SOLUTION: An elastic body 15 of approximately 0.05 to 0.3 specific gravity is interposed between seal lips 13, 14 of the upper and lower part of the weatherstrip, and the elastic body 15 is projected from the seal lips 13, 14 to press the glass run 16, and the clearance with the glass run 16 is filled up. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip attached to a door belt line of an automobile.

[0002]

2. Description of the Related Art As shown in FIG. 1, a glass run 2 is mounted on an upper edge portion and both side edge portions of a window opening 1 of a vehicle door, and a weather strip 3 is attached to a belt line of a lower edge thereof. The connecting portion with the glass run 2 is a mold forming portion 4 attached to the corner portion.

FIG. 2 shows a mold forming part 4 at a corner connecting the ends of the glass run 2 and the weather strip 3. The belt line side of the mold forming part 4 is divided into an inner part and an outer part, and a seal lip. 4 a, and is connected to the inner weather strip 3 a of the weather strip 3 and the seal lip 5 of the outer weather strip 3 b.

Since the window glass G moves up and down between the seal lips, the contact surface of the seal lip against the window glass G is required to have good slidability. Therefore, the contact surface of the seal lip against the window glass G is subjected to surface treatment for lubricity such as flocking as shown in the figure, coating with a coating, or coextrusion of a high sliding material film. However, in the case of the mold forming part 4, it is costly to perform a surface treatment for smoothness after the mold forming.

In order to address this problem, Japanese Patent Publication No. 7-39250, as shown in FIG. 3, makes notches in the inner portion and the outer portion of the mold forming portion 4 on the belt line side, and the inner weather strip 3a. The outer weather strips 3b are notched at the ends thereof and combined, and the lubricated seal lip 5 of the weather strips 3a, 3b is extended to the mold forming portion 4 so that the mold forming portion 4 does not need to be lubricated. What has been done is proposed. However, also in this case, if shrinkage occurs after molding or a positional deviation occurs during combination, a gap c is generated at the connection point, as shown in FIG. 4, and there is a problem that the appearance and sealability are impaired.

In Japanese Patent Laid-Open No. 2000-71774, as shown in FIGS. 5 and 6, after cutting off the end portion of the weather strip 6, a sponge-like sealing material 7 having elasticity is provided in the cut portion. It is also proposed to attach the weather strip to the joint portion 8a of the glass run 8 with no space therebetween, and further, as a conventional example, in JP-A-10-193975, a door inner weather strip is retrofitted with an adhesive. Although it is disclosed that the sponge rubber closes the gap S having a triangular shape in plan view between the inner lip of the glass run and the inner surface of the door glass, the joint portion 8a of the former glass run 8 is seen from its shape. The latter sponge rubber seems to be molded by molding, and has the function of closing the gap between the inner lip of the glass run and the inner surface of the door glass. In, it does not have a lateral oscillation preventing function of the sealing of the improvement and the door glass in the beltline. With respect to this point, in order to improve the sealing property and prevent lateral vibration of the window glass, it is known that weather strips are provided with seal lips at the top and bottom, or the seal lips are made hollow. In the No. 1, an elastic body such as sponge rubber is attached between the upper and lower seal lips, and this elastic body presses the tip of the lower seal lip against the window glass, and the reaction force suppresses the lateral shake of the window glass. What has been proposed is proposed.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a weather strip for a belt line, in which an elastic body such as sponge rubber is provided between upper and lower seal lips or a portion to be attached to a seal lip or trim. Aims to eliminate the need for a mold forming part so that the weather strip end can be connected to the glass run without leaving a gap, and to eliminate the need for activation treatment of the mold forming part. The second purpose is the reaction force to the window glass. It is intended to improve the sealing property without raising the value.

[0008]

The invention according to claim 1 relates to a weather strip which achieves the first object, in which a seal lip attached to a door belt line of an automobile and pressed against a window glass to be moved up and down. In a weatherstrip provided with an elastic body between the upper and lower seal lips or on the outer surface of the attachment part to the seal lip or trim, the elastic body is projected from the weatherstrip end and pressed against the grass run to press the weatherstrip end to the grass run. It is characterized by connecting.

According to the present invention, the sealing property at the belt line is improved by the elastic body provided between the upper or lower seal lip, the upper and lower seal lips, or the outer portion of the mounting portion to the trim, and In addition to improving lateral runout prevention, mold molding is unnecessary, and as a result, slipping treatment of the mold molding part is also unnecessary. Further, even if shrinkage occurs after molding or a position shift occurs during connection, no gap is formed between the glass run and the elastic body. Examples of the material of the elastic body used in the present invention include high-foam sponge rubber and high-foam resin.

The present invention according to claim 2 relates to a weather strip that achieves the second object, comprising upper and lower sealing lips that are attached to a door belt line of an automobile and are pressed against a window glass that moves up and down. In a weatherstrip in which an elastic body is provided between upper and lower seal lips or at a mounting portion to a seal lip or a trim, the elastic body is a sponge material having a specific gravity of 0.05 to 0.3.

According to the present invention, the elastic body has a specific gravity of 0.05.
The use of a sponge material of up to 0.3 can improve the sealing property without increasing the reaction force to the window glass. Similarly to the invention according to claim 1, the elastic body of the present invention can use, for example, highly foamed sponge rubber or highly foamed resin as a material.

The elastic body of the invention according to claims 1 and 2 described above may be attached to the weather strip after molding or may be extruded from the mouthpiece onto the weather strip for attachment, but preferably the weather strip. It is extruded at the same time. As a result, only one process is required.

Therefore, the invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the elastic body is extruded together with the weather strip. In the present invention, in order to project the elastic body from the end of the weather strip as in the first aspect of the present invention, for example, the weather strip may be cut from the end portion with a certain amount of the elastic body left.

[0014]

FIG. 7 shows an inner weather strip mounted on a door belt line according to the present invention, in which a mounting portion 12 mounted on a trim 11 is shown.
And the upper and lower seal lips 1 pressed against the window glass G
3, 14 and an elastic body 15 made of a sponge material having a specific gravity of about 0.05 to 0.3, which is attached inside the lower seal lip 14 so as to be interposed between the upper and lower seal lips 13 and 14. Composed of weather strip 1
The 0 end is directly connected to the glass run 16 as shown in FIG. 8, and the elastic body 15 is connected to the seal lip 1 as shown in FIG.
The protrusions 3 and 14 are pressed against the glass run 16 to fill the gap with the glass run 16 so as not to directly contact the window glass G.

According to the weather strip 10 of this embodiment, the elastic body 15 is interposed between the upper and lower seal lips 13 and 14, and the elastic body 15 has a specific gravity of 0.05 to 0.05.
Due to the sponge material of about 0.3, the window glass G
The sealability at the belt line can be improved without increasing the reaction force to the belt line, and the lateral shake of the window glass G can be prevented.
Since it is directly connected to the mold, mold molding is not necessary, slip processing on the mold molding part is also unnecessary, the process for that is not necessary, the cost of weather strip manufacturing can be reduced, shrinkage after molding and at the time of connection Even if a gap is created between the end of the weather strip 10 and the grass run 16 due to the positional displacement, the elastic lips 15 protruding from the seal lips 13 and 14 are filled so that the sealing performance and the appearance are not impaired. Play.

[0016]

According to the first aspect of the present invention, the sealing property in the belt line is improved by the elastic body provided between the upper or lower seal lips, the upper and lower seal lips, or outside the mounting portion to the trim. At the same time, it is possible to prevent lateral shake of the window glass, eliminate the need for mold forming and slip treatment on the mold forming part, reduce the number of steps and reduce the cost of weather strip production, shrink after molding and misalignment during connection. Even if a gap is created between the end of the weather strip and the grass run, it is filled with the elastic body protruding from the seal lip, and there is an effect that the sealing property and the appearance are not impaired.

According to the second aspect of the invention, the sealability in the belt line can be further improved without increasing the reaction force to the window glass. According to the invention of claim 3, since the elastic body is extruded together with the weather strip, the manufacturing process can be completed in one step, and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic view of a main part of an automobile door.

FIG. 2 is a perspective view of a connecting portion between a grass run and a weather strip end.

FIG. 3 is a perspective view of another example of the connecting portion between the grass run and the weather strip end.

FIG. 4 is a perspective view showing a state in which a gap is formed at a connection portion of the connection portion shown in FIG.

FIG. 5 is a front view of still another example of the connecting portion between the grass run and the weather strip end.

FIG. 6 is a vertical cross-sectional view of a joint portion.

FIG. 7 is a vertical sectional view of a weather strip according to the present invention.

FIG. 8 is a perspective view showing a connected state to a glass run.

FIG. 9 is a diagram showing a connection state to a grass run.

[Explanation of symbols] 11 ... Trim 12 ... Mounting part 13, 14, ... Seal lips 15 ... Sponge rubber 16 ... Grass Run

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiro Ohara             2-8 Mitsunomachi, Nishi-ku, Hiroshima-shi Nishikawago             Mu Industry Co., Ltd. F term (reference) 3D201 AA01 AA21 AA24 AA38 CA19                       CA20 DA09 DA31 DA38 DA49                       DA52 DA54 DA63 DA64 EA04A                       EA08A FA01 FA04 FA12                       FA15

Claims (3)

[Claims] 1. A seal lip 13, which is attached to a door belt line of an automobile and is pressed against a window glass G moving up and down,
14 are provided on the upper and lower sides, and upper and lower seal lips 13, 14
In the weather strip 10 in which the elastic body 15 is provided on the seal lip 13 or 14, or the outer surface 12a of the mounting portion 12 to the trim 11, the elastic body 15 is projected from the end of the weather strip 10 and pressed against the glass run 16. An automotive weatherstrip, characterized in that the end of the weatherstrip 10 is connected to a grass run 16. 2. A seal lip 13, which is attached to a door belt line of an automobile and is pressed against a window glass G that moves up and down,
14 are provided on the upper and lower sides, and upper and lower seal lips 13, 14
In the weather strip 10 in which the elastic body 15 is provided on the seal lip 13 or 14, or the outer surface 12a of the attachment portion 12 to the trim 11, the elastic body 15 is made of a sponge material having a specific gravity of 0.05 to 0.3. A weather strip for automobiles characterized by the above. 3. The automobile weatherstrip according to claim 1, wherein the elastic body 15 is extruded together with the weatherstrip 10.