JPH07172175A - Weatherstrip for door belt molding - Google Patents

Abstract

PURPOSE:To improve sealing performance by a weatherstrip. CONSTITUTION:In the front and rear end parts of an outer weather strip 18, thickness dimensions B, B', C are thinned and a distance A is shortened. In the longitudinal middle part of the outer weatherstrip, the thickness dimensions B, B', C are thickened and the distance A is lengthened. Thus, the outer weatherstrip 18 can be made to follow the deflection of a door glass in its longitudinal middle part for obtaining uniform seal pressure ranging from the front end of the door glass to its rear end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip for a door belt molding, which is in close contact with a door glass and seals between the door body and the door glass.

[0002]

2. Description of the Related Art Conventionally, a weather strip is provided on a door belt molding for the purpose of sealing between a door body and a door glass. An example of this kind of structure is
-56516. The structure disclosed in this publication will be briefly described below.

As shown in FIG. 4, a door panel 100 is provided.
A weather strip 102 is fitted to the upper end of the. The weather strip 102 includes a base portion 102A fitted to the upper end portion of the door panel 100, an upper lip 102B and a lower lip 102C protruding from the base portion 102A toward the door glass 104, and is formed by extrusion molding. .

Incidentally, in addition, in this structure,
Door glass 104 because lower lip 102C is hollow
In order to prevent the lower lip 102C from rolling and reversing together with the door glass 104 when moving up and down,
It is characterized in that the tip portion of C (the portion viewed from the P line) is slightly thicker than the other general portion of the lower lip 102C (the portion viewed from the Q line).

By the way, since the door glass 104 is generally supported by channel-shaped glass guides arranged at the front and rear ends, the middle part of the door glass 104 in the front-rear direction of the glass is more likely to bend than the front and rear ends (the backlash of the door glass 104). The displacement amount due to vibration is relatively large in the middle part of the door glass 104 in the front-rear direction of the glass).

[0006]

However, as described above, since the weather strip 102 of this type is often formed by extrusion molding, the door glass 104 is formed.
The same cross section continues in the front-back direction. Therefore, the sealing pressure of the weather strip 102 is likely to decrease at the intermediate portion of the door glass 104 in the front-rear direction of the glass. That is,
The sealing pressure by the weather strip 102 is the door glass 1
04 becomes uneven in the front-back direction. Therefore, the sealing performance of the weather strip 102 deteriorates.

In view of the above facts, an object of the present invention is to obtain a weatherstrip for a door belt molding which can improve the sealing performance by the weatherstrip.

[0008]

The present invention is provided from the front end to the rear end of a door belt molding arranged at the upper end of the door body along the front-rear direction of the door and can be lifted and lowered in the door body. A weather strip for a door belt molding, which is disposed on the door glass and is closely attached to a door glass whose front and rear ends are supported by a glass guide to seal between the door body and the door glass, the base being attached to the door belt molding, and the door. A lip portion that adheres to the glass, and the thickness of the lip portion and the thickness near the base of the lip portion at the base portion are made thin at the front end portion and the rear end portion of the door belt molding and the longitudinal direction of the door belt molding Thicken in the middle, shorten the distance from the base to the tip of the lip at the front and rear ends of the door belt molding, and increase the length of the door belt molding. Lengthened in the direction intermediate portion, and characterized in that.

[0009]

The operation of the present invention is as follows.

Since the front and rear ends of the door glass which is vertically movable in the door body are supported by the glass guides, the door glass is easily bent at the middle portion in the front-rear direction of the glass.

According to the present invention, the thickness of the lip portion and the thickness of the base portion in the vicinity of the root of the lip portion are thinned at the front end portion and the rear end portion of the door belt molding, and in the longitudinal direction of the door belt molding. Thicken in the middle,
The distance from the base to the tip of the lip is shortened at the front and rear ends of the door belt molding and at the middle of the door belt molding in the longitudinal direction, so a sealing pressure that follows the bending of the door glass is obtained. To be Therefore, the sealing pressure by the weather strip becomes uniform from the front end portion to the rear end portion of the door glass.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In these figures, arrow FR indicates the vehicle front side, arrow UP indicates the vehicle upper side, and arrow IN indicates the vehicle interior side.

FIG. 3 shows a side door 10 of an automobile, and FIG. 2 shows a vertical cross section of a belt line portion of the side door 10. The side door 10 includes a door body including a door outer panel 12 arranged outside the vehicle compartment and a door inner panel (not shown) arranged inside the vehicle compartment.

As shown in FIG. 2, a resin door belt molding 14 is arranged at the upper end portion (belt line portion) of the door outer panel 12 of the side door 10.
The door belt molding 14 has a frame shape as a whole and is provided not only on the belt line portion but also on the door frame portion. Further, an edge protector 16 made of resin is also arranged between the lower end of the door belt molding 14 and the upper end of the door outer panel 12.

An outer weather strip 18 is arranged inside the door belt molding 14 as described above.
The outer weather strip 18 has a base portion 18A for mounting.
And a lower lip 18B protruding from the lower end of the base portion 18A toward the vehicle interior side, and an upper lip 18C protruding from the vicinity of the middle portion in the height direction of the base portion 18A toward the vehicle interior side.
Among these, a core material 20 made of an iron plate is embedded inside the base portion 18A, and the base portion 18A is fixed to the door belt molding 14 with a screw 22. Also, the lower lip 18
Both the tip portion of B and the tip portion of the upper lip 18C are in close contact with the door glass 24. As shown in FIG. 3, the front end portion of the door glass 24 has a front glass guide 2
6, the rear end is supported by a rear glass guide 28, and the door glass 24 can be moved up and down by a window regulator (not shown).

Next, the outer weather strip 1 described above.
The dimensions of each part of No. 8 will be described. For the explanation,
As shown in (A), from the indoor side surface of the core member 20 at the base 18A to the tip of the upper lip 18C or the lower lip 1
The distance dimension to the tip of 8B is A, and the upper lip 18C
Is B, the middle lip of the lower lip 18B is B ′, and the wall thickness of the base portion 18A from the inner surface of the core member 20 to the inner surface of the rubber portion is C. .

Here, in this embodiment, as shown in FIG. 1 (B), the distance between the front end portion (the portion viewed from the line A) and the rear end portion (the portion viewed from the line B) of the outer weather strip 18 is increased. A is shortened and each wall thickness dimension B, B ′, C is thinned. In addition, the middle portion of the outer weather strip 18 in the longitudinal direction (C
In the line arrow portion), the distance A is made longer and the thickness dimensions B, B ′, C are made thicker. Therefore, the outer weather strip 18 in the present embodiment is not manufactured by extrusion molding but by molding.

The operation of this embodiment will be described below. As described above, the door glass 24 is supported by the front glass guide 26 and the rear glass guide 28 at the front and rear ends thereof. Therefore, the door glass 24 is easily bent at the intermediate portion in the front-rear direction of the glass. For this reason, in the case of the conventional structure, the upper lip 18C of the outer weather strip 18 is provided at the intermediate portion of the door glass 24 in the front-rear direction of the glass.
Also, the sealing pressure by the lower lip 18B was easy to decrease.

However, according to this embodiment, at the front end and the rear end of the outer weather strip 18,
Shorten the distance A and thin each wall thickness dimension B, B ', C,
At the intermediate portion of the outer weather strip 18 in the longitudinal direction, the distance A is made longer and the thicknesses B, B ', C are made thicker, so that a sealing pressure that follows the bending of the door glass 24 can be obtained. More specifically, it operates as follows.

That is, by increasing the thickness B of the middle portion of the upper lip 18C and the thickness B'of the middle portion of the lower lip 18B, the upper lip 18C and the lower lip 18B are increased.
The rigidity itself is improved. Further, the wall thickness dimension C from the indoor side surface of the core member 20 to the indoor side surface of the rubber portion in the base portion 18A
By increasing the thickness of the upper lip 18C, the thickness of the base 18A particularly near the base of the upper lip 18C increases.
The bending (rotation) rigidity of 8C is improved. Therefore, the rigidity of the upper lip 18C and the lower lip 18B is increased by increasing the wall thickness dimensions B, B ', C. In addition to this, by increasing the distance A from the base portion 18A to the tip portion of the upper lip 18C, the upper lip 18C and the lower lip 1 can be prevented from bending in the middle portion of the door glass 24 in the front-rear direction of the glass.
8B can be followed.

As described above, in this embodiment, at the front end portion and the rear end portion of the outer weather strip 18, the distance A is shortened and the respective wall thickness dimensions B, B ', C are thinned, and the outer weather strip is made thin. At the middle portion of the strip 18 in the longitudinal direction, the distance A is made long and the thickness dimensions B, B ′, C are made thick, so that a uniform sealing pressure is obtained from the front end portion to the rear end portion of the door glass 24. be able to. Therefore, the sealing performance of the outer weather strip 18 can be improved.

Although the present invention is applied to the outer weather strip 18 in this embodiment, the present invention is not limited to this.
The present invention may be applied to the inner weather strip arranged on the opposite side of the outer weather strip 18 with the door glass 24 interposed therebetween in FIG.

Further, in the present embodiment, the door belt molding 14 of the type in which the belt line portion and the door frame portion are provided in a frame shape is taken as an example, but the present invention is not limited to this, and the type is provided only in the belt line portion. Door belt moldings may be used.

[0024]

As described above, in the weather strip for door belt molding according to the present invention, the thickness of the lip portion and the thickness in the vicinity of the root of the lip portion at the base are determined by the front end portion and the rear end portion of the door belt molding. And the thickness in the longitudinal middle part of the door belt molding, and the distance from the base to the tip of the lip part is shortened at the front and rear ends of the door belt molding and the longitudinal middle of the door belt molding. Since the length of the portion is increased, it has an excellent effect that the sealing performance by the weather strip can be improved.

[Brief description of drawings]

FIG. 1A is a cross-sectional view of an outer weather strip cut in a direction perpendicular to the longitudinal direction, and FIG. 1B is a schematic plan view showing the outer weather strip as viewed from above the door.

2 is a sectional view taken along line 2-2 of FIG. 3 showing an assembled state of the outer weather strip shown in FIG.

FIG. 3 is a side view showing a side door.

FIG. 4 is a sectional view corresponding to FIG. 2 showing an outer weather strip according to a conventional example.

[Explanation of symbols]

 10 Side Door 12 Door Outer Panel (Door Body) 14 Door Belt Mall 18 Outer Weather Strip 18A Base 18B Lower Lip 18C Upper Lip 24 Door Glass 26 Front Glass Guide 28 Rear Glass Guide

Claims (1)

[Claims] 1. A door guide, which is provided at an upper end of a door body along a front-rear direction of a door, extends from a front end to a rear end of the door belt molding, and is vertically movable in the door main body so that the front and rear ends are guided by a glass guide. A weather strip for a door belt molding that closely adheres to the door glass supported by and seals between the door body and the door glass, a base portion that is attached to the door belt molding, and a lip portion that closely adheres to the door glass, The thickness of the lip portion and the thickness of the lip portion near the root of the base portion are thin at the front end portion and the rear end portion of the door belt molding and are thick at the longitudinal middle portion of the door belt molding. Shorten the distance to the tip of the lip at the front and rear ends of the door belt molding and at the middle of the door belt molding in the longitudinal direction. The, door belt molding weather strip, characterized in that.