JPS6130419A - Weather strip for car door use - Google Patents

Abstract

PURPOSE:To maintain the sealability of a door when its is closed preventing water from dropping when it is opened by forming a special section which is elastically deformed into a sharply buckled form at the periphery of a hollow seal lip when the door is closed so as to form a square corner at a place where the periphery of the hollow seal lip is articulated with a contacting surface. CONSTITUTION:A weather strip 3A consists of a base section 6 which is fixed on to the periphery of a door 2, e.i. a retainer section 5 at the upper portion of a door sash 4, and a hollow seal lip 10 which is formed in an integral part with the base 6 and firmly comes in contact with a seal panel 7a of the periphery of car door opening, that is, with a roof side panel 7 whe the door 2 is closed. And the outer periphery 14 of the hollow seal lip 10 is elastically deformed into a sharply buckled form outward to the lateral direction when the door 2 is closed. A square corner 17 is formed with a small curvature at a place where a contacting surface 11 of the seal panel surface 7a is articulated with the outer periphery of the hollow seal lip 10.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a door weather strip for a motor vehicle.

Conventional technology.

Automotive door weather strips include, for example, "Automobile Engineering Complete Book; Volume 13" published by Sankaido Co., Ltd. on April 20, 1980.
There is one shown on page 139 of "Volume: Passenger Car Body".

To explain this with reference to FIG. 3.4, 1 is an opening in the vehicle body, 2 is a door, and 3 is a door weather strip attached to the periphery of the door 2. When the door 2 is closed, the vehicle body The gap between the vehicle body opening 1 and the door 2 is sealed in close contact with the opening edge of the opening 1. This door weather strip 3 has a base part 6 fixed to a retainer part 5 disposed on the peripheral edge of the door 2, for example, the upper part of the door sash 4, and is integrally molded with this base part 6 so that when the door is closed, the vehicle body opening 1 The opening edge of the thumb sill 7 is a hollow space that is in close contact with the seal panel surface 7a formed stepwise at the bottom of the side rail actuator 7 to suppress the sealing reaction force to a certain extent so as not to adversely affect door closing. It consists of a seal lip 8.

Problems to be Solved by the Invention However, in the prior art described above, the hollow seal lip 8 extends from the inner end to the outer end of the base portion 6 and is provided with an arcuate cross-section. Hollow sealing lip 8 when closed
The part away from the seal panel surface 7a is elastically deformed into a circular arc shape with a large curvature, and above the seal panel surface 7a, the roof sight rail outer 7 and the outer circumferential side of the hollow seal lip 8 are formed in a cross-sectional shape of approximately . Nokuhomi 9 is formed. For this reason, rainwater and car wash water remain in the recess 9, and the remaining water may drip into the vehicle body opening 1 when the door is opened.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automobile door weather strip that maintains sufficient sealing performance and can prevent water from being drawn into the boundary between the hollow seal lip and the edge of the vehicle body opening. be.

Means and operation for solving the problems In the present invention, a buckling portion is formed on the outer peripheral side of the hollow seal lip to elastically deform outward in the width direction into a dogleg shape in cross section when the door is closed.
A corner portion is formed at the connecting portion between the outer circumferential surface of the hollow seal lip and the face of the hollow seal lip that is a portion of the hollow seal lip that is in close contact with the vehicle body opening edge.

Therefore, when the door is closed, as the hollow seal lip is pushed outward in the width direction, the outer circumferential side of the hollow seal lip bends from the buckled part, brings the abutting surface into tight contact with the edge of the vehicle body opening, and the corner part To prevent the formation of a surface depression so as to draw water to a contact/separation boundary between a vehicle body opening edge and a hollow seal lip.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same parts as in the conventional structure.

In FIG. 1.2, the three door weather strips include a base part 6 fixed to a retainer part 5 disposed on the peripheral edge of the door 2, for example, the upper edge of the door sash 4, and a base part 6 that is integrally molded on this base part 6. It has a hollow seal lip 10 that comes into close contact with the opening edge of the vehicle body and the seal panel surface 7aJC of the side panel 7 when the door is closed. A portion of the hollow seal lip 10 that is in close contact with the seal panel surface 7a is exposed as a substantially flat contact surface 11. A shallow indentation 12 is formed in the molded base on the inner circumferential side of the hollow seal lip 10 located at the lower part of this contact surface 11 and located on the hollow part 13 side.

Further, a thin buckling portion 14 is formed on the outer peripheral side of the hollow seal lip 10 to elastically deform outward in the width direction into a dogleg shape in cross section when the door is closed. A lower portion 15 of the hollow seal lip 10 extending from the buckled portion 14 to the base portion 6 gradually becomes thicker from the buckled portion 14 toward the base portion 6. The upper portion 16 of the hollow seal lip 10 extending from the buckled portion 14 to the face surface 11 gradually becomes thicker from the buckled portion 14 toward the abutment surface 11. An arcuate corner 17 with a small curvature is formed at the connecting portion between the outer peripheral side of the hollow seal lip 10 and the contact surface 11.

According to the above embodiment structure, as the door 2 is closed, the corner portion 17 is brought into contact with the seal panel surface 7a of the outer panel 7, and the contact surface 11 is brought into contact with the corner 12 of the molded base.
The buckled portion 14 is pushed outward with the rotation axis as an axis, and accordingly, the buckled portion 14 moves outward in the width direction and bends into a dogleg shape in cross section under elastic deformation, thereby forming the outer peripheral lower portion 15 of the hollow seal lip 10. is arched inwardly, and the abutment surface 11 is brought into close contact with the seal panel surface 7a in full contact with the seal panel surface 7a under an appropriate sealing reaction force. Moreover, hollow seal lip 10
A corner portion 17 is arranged at the boundary between the seal panel surface 7a and the seal panel surface 7a, and can prevent the formation of a substantially V-shaped depression to trap water.

Effects of the Invention As described above, according to the present invention, when the door is closed, the hollow seal lip is bent from the buckled portion and the abutting surface is brought into close contact with the edge of the vehicle body opening, thereby ensuring sufficient sealing performance. Not only that, but it also prevents water from entering the boundary between the hollow seal lip and the edge of the vehicle body opening, which maintains the sealing performance when the door is closed and prevents dripping water when the door is opened, making it more reliable. It has a practical effect of being able to provide a highly durable seal structure.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, and FIG. 2 is a cross-sectional view similar to the cross section taken along the line at-■ in FIG. 4, and FIG. 2 is a cross-sectional view similar to FIG. 3 for explaining the present invention in detail. , FIG. 3 is a sectional view taken along the line ■-■ in FIG. 4, and FIG. 4 is a perspective view of a conventional door spindle. 3.3A--door weather strip, 6-φ-pace part, 8, 10--hollow seal lip, 11... contact surface,
14...Fusion part, 15...Corner part. 2 people Figure 1 Figure 2

Claims (1)

[Claims] The structure includes a base part that is fixed to the peripheral edge of the door, and a hollow seal lip that is integrally formed with the base part and comes into close contact with the opening edge of the vehicle body when the door is closed, and the door is attached to the outer peripheral side of the hollow seal lip. A buckling part is formed which elastically deforms outward in the width direction into a substantially dogleg shape in cross section when the seal is closed, and a joint part between the outer periphery of the hollow seal lip and the abutting surface of the hollow seal lip as a part of the hollow seal lip that comes into close contact with the edge of the vehicle body opening is formed. An automobile door weather strip characterized by having corner portions formed therein.