JP2002254933A - Automobile door belt line moving - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile door belt line molding provided with a weather strip of high durability and stable cutwater property in moving up and down the door glass of an automobile door. SOLUTION: A root part of a lip and a door glass sealing part of the lip are made of different resin materials in the weather strip of the belt line molding mounted on a door glass moving up and down part of the automobile door, and the resin material for the root part of the lip has the compression set smaller than that of the material of the door glass seal part of the lip. A tip part of the lip is made to constantly abut on a glass face even when the door glass is oscillated left and right by making the tip R-shape of the cutwater lip small.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip of a belt line molding attached to a belt line of a door panel on which a door glass of an automobile door rises and falls, and relates to a structure and a shape of a lip having excellent drainability and excellent durability. .

[0002]

2. Description of the Related Art The door opening / closing portion of an automobile is slidably contacted with the door glass with an elastic force, and a seal is provided between the door panel and the door glass to prevent rainwater and dust from entering, and a wind noise, etc. A belt line molding equipped with a weather strip is attached to reduce the risk. Such a belt line molding is a conventional example, as shown in FIG. 4, in which an upper fin is mainly used for drainage of rainwater or the like, and a fin-shaped drainer lip 102 is used. The two-stage lip structure of the high reaction force draining lip 103 having a hollow cross-sectional shape has the purpose of absorbing the variation in the vertical direction of the glass surface at the time and abutting and sealing the glass with elasticity.

[0003] Therefore, the upper drainage lip must be in sharp sliding contact with the door glass surface to ensure drainage, and high weather resistant PVC and the like having a high resin hardness are widely used.
However, as shown in FIG. 2, when the door glass 5 is moved up and down, the variation L in the direction perpendicular to the surface of the door glass is about 3 mm.
Due to the relatively large extent, the drainage lip repeatedly swings up, down, left and right as the door glass is repeatedly raised and lowered.However, resin materials with high resin hardness have relatively poor elastic deformation rates, There is a technical problem that the strain rate is high, so-called settling occurs at the base of the drainage lip, the reaction force against the door glass decreases, the durability against drainage performance is poor, and the initial performance cannot be maintained. Was.

Further, as shown in FIG. 5, the tip of the conventional drain lip is large, and when the door glass swings toward the belt line molding side, the drain lip is pushed by the glass surface and stands in the vertical direction. There was also a problem that it could not hit the glass surface.

[0005]

SUMMARY OF THE INVENTION In view of the above technical problems, the present invention provides a vehicle door belt line provided with a weatherstrip which has a stable and durable drainage property when a door glass of a vehicle door is raised and lowered and which has excellent durability. It aims to provide malls.

[0006]

According to the present invention, in order to achieve the above object, a base portion of a lip to which a repeated bending stress is applied is made of a resin material having a high elastic deformation rate and a low sagging property, and is applied to a door glass. The present inventors have focused on the fact that if the door glass seal portion of the sliding lip is made of a resin material having good drainage properties, conflicting quality requirements can be achieved.

According to the first aspect of the present invention, the base portion of the lip and the door glass seal portion of the lip are formed of different resin materials in the weatherstrip of the belt line molding attached to the elevator of the door glass of the automobile door. A resin material having a smaller compression set at the base of the lip than at the door glass seal of the lip was employed. Here, the compression set of the resin used for the base portion of the lip and the door glass seal portion of the lip should be relatively small as long as the base portion of the lip is relatively small.
The following is desirable.

According to a second aspect of the present invention, in a weatherstrip of a belt line molding attached to an elevator of a vehicle door, a base portion of a lip and a door glass seal portion of the lip are formed of different resin materials, The lip door glass seal has a higher resin hardness than the base of the lip.

As a result, the door glass seal portion of the lip has a high resin hardness, has a high lip shape holding property against sliding run-off with respect to the glass when the glass is raised and lowered, and can stably secure drainage performance. At the base of the base material, the initial performance can be maintained for a long period of time by using a low level resin material. In addition, it is desirable that the lower flank of the draining lip be planted with a hair such as nylon pile in order to improve the glass sliding property.

According to a third aspect of the present invention, in a weather strip of a belt line molding attached to an elevating opening of a door glass of an automobile door, a variation in a direction perpendicular to a surface of the door glass when the door glass is raised or lowered is reduced. The tip of the draining lip was kept in contact with the glass surface. As a method of keeping the tip of the drain lip constantly touching the glass surface even when the right and left glass shakes in the direction perpendicular to the glass surface when the door glass is raised and lowered, for example, the tip R of the drain lip is compared with the conventional method. It is conceivable to reduce the size of the drainage lip and increase the radius of the belly on the lower side of the drain lip. According to a fourth aspect of the present invention, in the third aspect of the present invention, the tip R shape of the drain glass lip of the door glass seal portion is R = 0.3.
mm or less, the lower abdomen R shape of the drain lip is R = 50 m
m.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. Figure 5 on car door
As shown in FIG. 1, a sectional view (AA sectional view) of a belt line molding portion according to the present invention in which a belt line molding 1 is attached to a door glass raising / lowering opening portion is shown in FIG. The belt line molding has a weather strip as a weather strip, a draining lip 2 on the upper stage, and a high reaction force draining lip 3 on the lower stage.
From the door glass 5 side. The base (the hatched portion) 22 of the draining lip 2 to the base member 4 has a low permanent set of about 38% in compression set and about 55 in resin hardness.
The drain glass lip door glass seal portion 21 connected to the door glass side from the base portion is made of a general weather resistant PVC resin having a compression set of about 70% and a resin hardness of about 70. Also, R (1) at the end of the door glass seal portion of the drain lip was set to about R = 0.3 mm, and R (2) at the lower abdomen was set to about R = 50 mm, so as shown in FIG. When the door glass is moved up and down, a variation L (about 3 mm) in a direction perpendicular to the glass surface of the glass 5 is generated, and the tip of the drain lip constantly touches the door glass surface even if the contact surface of the drain lip swings up and down and right and left. Here, the smaller the tip R (1) of the glass seal portion of the drain lip sharply touches the door glass, and the R shape of the drain lip R (1) is R = 0.
3 mm or less is desirable. Even if the draining lip stands up due to the swing of the door glass, the R shape of the abdominal portion R (2) on the lower side of the draining lip is R = R so that the tip of the lip constantly touches the door glass. It is desirable to be 50 mm or more.

The lower high reaction force drainage lip 3 also has a low permanent set of about 38% in compression set and about 55 in resin hardness at the base (shaded portion) 32 of the high reaction force drainage lip attached to the base member. The door glass seal portion 31 of the high reaction force draining lip connected to the door glass side from the base portion is made of a conductive PVC resin having a compression set of about 70% and a resin hardness of about 70.
It is formed of VC resin. In the case of the high reaction force draining lip, if the R shape of the front end R (3) of the door glass seal portion is set to R = 0.3 mm or less and the R shape of the lower abdomen R (4) is set to R = 50 mm or more, Further, drainability can be improved.

As described above, the resin hardness of the door glass seal portion 21 of the drain lip 2 and the door glass seal portion 31 of the high reaction force drain lip 3 are high, the lip shape retention is good, and the base of the lip is provided. Has good elasticity, so it is excellent in following the right and left swing of the door glass.

As another application example of the lip structure and lip shape in the present invention, an example in which a high reaction force is not required is shown in FIG.
2a is provided in two upper and lower stages.

The method for testing and measuring the compression set in the present invention will be described with reference to FIG.
mm test piece 6 was attached to a jig 7 corresponding to a flange equivalent to an actual vehicle, and held at a test temperature of 70 ° C. and a test time of 22 hours with a gear type aging tester in a state of being compressed to a deflection of −2 mm. After removing and leaving at room temperature for 30 minutes, the height of the test piece was measured, and the compression set (%) =
It is determined by (T0−T2) / (T0−T1) × 100.

[0016]

The present invention has a structure in which resin materials having different characteristics are connected at the base of the lip and the door glass seal side, and the base of the lip is subjected to a strong bending stress as the door glass rises and falls. By selecting a material with a low-slipping part and selecting a material with high resin retention and high resin hardness on the door glass seal side of the lip that slides on the door glass surface, good drainage and excellent durability It becomes a weather strip. Further, since the tip R of the draining lip is small and the radius of the lower abdomen is large, even if the door glass swings right and left, the door glass constantly hits the tip, so that stable drainability can be obtained.

[Brief description of the drawings]

FIG. 1 shows a cross-sectional view of a lip structure and shape according to the present invention.

FIG. 2 shows how a lip hits a door glass.

FIG. 3 shows another application example of the present invention.

FIG. 4 shows a conventional example of a lip structure and shape.

FIG. 5 shows a mounting position of a belt line molding.

FIG. 6 is a schematic view of a compression set test method, in which (a) shows a state before the test, (b) shows a state at the time of compression, and (c) shows a state after the test.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt line molding 2 Drip lip 21 Door seal part of drain lip 22 Root of drain lip 3 High reaction force drain lip 31 Door glass seal part of high reaction drain lip 32 Root of high reaction drain lip 4 Base member Reference Signs List 5 Door glass 6 Test piece for compression set test 7 Jig equivalent to flange equivalent to actual vehicle R (1) Tip RR of drain lip (2) Lower abdomen RR of drain lip (3) High reaction force drain lip Tip RR (4) Lower abdomen R of high reaction force drainer lip

Continued on the front page (72) Inventor Hidemasa Ota 1005-1 Nishi-Ebaracho, Ibara-shi, Okayama Prefecture Katayama Industry Co., Ltd. F-term (reference) 3D201 AA01 CA31 DA38 EA06B

Claims (4)

[Claims] In a weather strip of a belt line molding attached to an elevating opening of a door glass of an automobile door, a base portion of the lip and a door glass seal portion of the lip are formed of different resin materials, and a base portion of the lip is provided. The automobile door belt line molding, wherein the resin material is a resin material having a smaller compression set than the lip door glass seal portion. 2. A weather strip of a belt line molding attached to an elevator of a glass of an automobile door,
An automobile door belt line molding, wherein the base of the lip and the door glass seal of the lip are formed of different resin materials, and the door glass seal of the lip has a higher resin hardness than the base of the lip. 3. A weather strip of a belt line molding attached to a door glass elevating opening of an automobile door, wherein a water drain lip is constantly provided for fluctuations in a direction perpendicular to the surface of the door glass when the door glass is raised and lowered. An automobile door belt line molding characterized in that a front end portion of the vehicle door belt abuts on the glass surface. 4. The invention according to claim 3, wherein the shape of the tip R of the door glass seal portion of the draining lip is set to R = 0.3 mm or less, and the shape of the lower abdomen R of the draining lip is set to R = 50 mm or more. An automobile door belt line molding characterized by the following.