JPH0632428Y2 - Car door seal structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a vehicle door seal structure using a weather strip, and more specifically, improves the cross-sectional shape of the weather strip to improve the tightness of the door, the sealing property, and the like. The present invention relates to such a vehicle door seal structure.

2. Description of the Related Art As a weather strip used for a door seal structure of an automobile, for example, a sealing member disclosed in Japanese Utility Model Laid-Open No. 53-53260 has the following structure from the viewpoint of illustration and description. have. That is, the fifth
As shown in the figure, a flexible mounting base 21 to be mounted on the flat peripheral surface on the door side of the opening / closing part of an automobile, and an outer side wall part 22 standing upright from the vehicle outer side of the base part 21, the upper end of which is provided. A hollow pedestal having a cross-sectional shape, which is formed by connecting an extending wall portion 23 that extends and curves to the sealed surface side of the vehicle body that is substantially orthogonal to the engraving surface when the door is closed between A hollow seal portion 25 having a sectional shape in which a portion 24 is projectingly provided, extends from the outside of the central wall portion 23a of the wall portion 23, and extends to the sealed surface side and is connected to the inside of the central wall portion 23a.
Is a projecting structure. The sealing member is formed to have a large size in order to absorb variations in the building dimensions of the door and improve the sealing performance. As a result, the sealing member is formed in the W direction (door closing direction). The curve of the compression load-deflection curve in () becomes large as shown by the curve (b) in FIG. 4, which deteriorates the tightness of the door.

Problems to be Solved by the Invention In the above-mentioned configuration, the member has a poor compression load-deflection curve and deteriorates the tightness of the door. However, the present invention is to solve this point and the sealing property. It is intended to provide a seal structure excellent in terms of seal stability and durability.

Means for Solving Problems A mounting base is mounted on a flat peripheral surface on the door side of an opening / closing part of an automobile, and an outer wall portion is erected on the vehicle outer side of the base portion, and the upper end of the outer wall portion and the vehicle inner side of the base portion. And a protruding wall portion having a cross-sectional shape that connects an overhanging wall portion between the wall portion and at least the central wall portion of the wall portion and is located on the inclined line formed with the sealed surface, and from the outside of the central wall portion. In a door seal structure using a weather strip having a configuration in which a hollow seal portion that extends and extends to the sealed surface side and is connected to the inside of the central wall portion is provided, the cross-sectional shape of the hollow seal portion is It is formed so as to have a substantially elliptical shape, and the short axis side thereof is provided so as to substantially coincide with the inclined line.

Action When the door is closed, the sealing wall part around the inclined line of the hollow seal part elastically deforms elastically in sealable contact with the sealed surface of the vehicle body and can be restored in the line direction (when the door is open). At the same time, the hollow seal portion presses the central wall portion of the projecting wall portion in the linear direction and is elastically supported by the central wall portion. That is, by this, the tightness of the door, the sealing property and the like are extremely improved.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view, FIG. 2 is a mounting state diagram, and FIG. 3 is an explanatory view of the operation.

In the figure, 5 is a mounting base, 9 is a hollow receiving part, 10 is a hollow seal part, 11 is a weather strip, and 12 is a door seal structure.

The vehicle door seal structure 12 of the present invention has a flexible mounting base 5 mounted on the flat peripheral surface 4 of the opening / closing part 2 of the automobile 1 on the door 3 side, and rises from the vehicle outer side of the base 5 to form an outer wall. A portion 6 is provided upright and extends between the upper end 6a of the portion 6 and the inner side of the base portion 5 so as to extend toward the sealed surface 7 side of the vehicle body 1a that is substantially orthogonal to the peripheral surface 4 when the door 3 is closed. A hollow pedestal 9 having a cross-sectional shape is provided so as to connect the outlet wall portion 8 and at least a central wall portion 8a of the wall portion 8 is located on an inclined line L formed by the sealed surface 7 and the central wall portion 8a. A weather strip (a height of about 21) that extends from the outer side of the above, and projects from the sealed surface 7 side so as to project a hollow seal portion 10 having a cross-sectional shape connected to the inside of the central wall portion 8a.
mm, width about 25 mm) 11, the hollow seal portion 10 is formed to have a substantially elliptical cross-section, and the minor axis (d ₁ ) side of the hollow seal portion 10 is substantially aligned with the inclined line L. There is one that was projected. The mounting base portion 5 and the outer side wall portion 6 are made thick enough not to be easily deformed by pressure applied when the door 3 is closed, which will be described later. In the figure, (d ₂ ) is a long axis and 13 is a ventilation hole.

In this invention, since the flexibility of the weather strip 11 is larger than that of the conventional one, not only the variation in the building size of the door 3 can be reliably absorbed, but also the sealing stability is further improved.

2 and 3, when the door 3 is closed, the seal wall portion 10a around the inclined line L of the hollow seal portion 10 is closed by the vehicle body 1.
The elastic sealing member elastically deforms in the direction of the line L (when the door is opened) while elastically contacting the surface 7 to be sealed of a in a sealable manner, and at the same time, the hollow seal portion 10 forms the central portion of the overhang wall portion 8. 8
A is pressed in the direction of the line L and is elastically supported by this. As a result, the present invention reliably absorbs the variation in the building dimensions of the door 3 and stably exhibits excellent sealing performance. Further, it sufficiently withstands the suction phenomenon of the door 3 during high-speed traveling and reliably exhibits the sealing performance. This device is
As is clear from the compression load-deflection curve (a) of the weather strip 11 shown in FIG. 4, the tightness (tightening operability) of the door 3 is extremely good. The compression direction of the weather strip 11 (door closing direction) is the same as the W direction in FIG.

Effect of the Invention As described above, this invention not only solves the problem of the sealing property due to the variation in the door building dimension, which is the conventional defect, but also the door tightness is better than the conventional one. And has an advantage of exerting an excellent effect in terms of durability and the like.

[Brief description of drawings]

FIG. 1 is a sectional view of the present invention, FIG. 2 is a sectional view of a mounted state at the upper part of a door, FIG. 3 is an explanatory view of operation, FIG. 4 shows a compression load-deflection curve, and FIG. It is sectional drawing of the sealing member of FIG. 5 ... Attachment base part, 6 ... Outer side wall part 8 ... Overhanging wall part, 9 ... Hollow cradle part 10 ... Hollow seal part 11 ... Weather strip 12 ... Automotive door seal structure

Claims (1)

[Scope of utility model registration request] 1. A flexible mounting base is mounted on a flat peripheral surface on the door side of an opening / closing part of an automobile, and an outer wall is erected from the outside of the base to stand upright, and an upper end of the outer wall is provided. When the door is closed, a protruding wall portion that extends and curves to the sealed surface side of the vehicle body that is substantially orthogonal to the peripheral surface is connected between the base portion and the inside of the vehicle, and at least the central wall portion of the wall portion is the sealed portion. A hollow pedestal portion having a cross-sectional shape located on an inclined line formed with the surface is provided so as to project from the outside of the central wall portion and to extend to the sealed surface side to connect to the inside of the central wall portion. In a door seal structure using a weather strip having a configuration in which a hollow seal portion having a cross-sectional shape is formed, the hollow seal portion has a substantially elliptical cross-sectional shape, and the minor axis side of the hollow seal portion is the inclined line. An automobile drive characterized in that Seal structure.