JPH08268067A - Weather strip structure of sliding rear door - Google Patents

Abstract

PURPOSE: To prevent deterioration of the closability by suppressing a large elastic reaction of a hollow seal part in closing a slide type rear door, and to prevent deterioration of the durability and the sealing performance. CONSTITUTION: A weather strip 11 is provided with a supporting lip 14 where a tip edge 14b is brought into elastic contact with an outer side surface 2a of a center pillar 2 in the vertical direction in closing a slide type rear door 4 on a connection edge of a base part 12 fixed to a front end part 4a of the slide type rear door 4 to one side part 13a in the cabin side of a hollow seal part 13. A center part 13d of the hollow seal part 13 is bent outwardly approximately L-shape to be brought into elastic contact with a rear edge 3b of a front door 3 by elastic reaction of the lip 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weatherstrip structure for sealing between a sliding rear door and a front door.

[0002]

2. Description of the Related Art As a conventional weather strip for a sliding rear door, for example, an actual open flat plate 2-64425 is used.
Japanese Unexamined Patent Application Publication No. 2000-163,088 is known.

That is, as shown in FIG. 3, a one-box type vehicle 1 is provided with a front door 3 on the front side and a slide type rear door 4 on the rear side with a center pillar 2 interposed therebetween. A weather strip 5 is attached inside the front end portion 4a.

As shown in FIG. 4, the weather strip 5 includes a base portion 5a fixed to the inside of the front end portion 4a of the sliding rear door 4 by a clip 6, and a hollow seal portion 5b integrally provided on the front end side of the base portion 5a. It is mainly composed of

The base portion 5a is formed in a solid shape, and is formed in a step shape along the step inner surface of the front end portion 4a of the sliding rear door 4. On the other hand, the hollow seal portion 5b has a substantially rectangular cross section, inner and outer pieces 5c and 5d are formed to be inclined toward the inside of the vehicle, and a connecting piece 5e that connects the tip portions of the inner and outer pieces 5c and 5d. have.

Then, when the sliding rear door 4 is slid forward from the open position shown in FIG. 4 and closed as shown in FIG. 5, the inner surface of the inner piece 5c of the hollow seal portion 5b becomes the outer surface of the center pillar 2. At the same time as contacting 2a,
The outer surface of the tip portion 5f of the outer piece 5d contacts the inner surface of the rear edge 3b of the front door 3, and between the rear end portion 3a of the front door 3 and the front end portion 4a of the sliding rear door 4 and the outer surface 2a of the center pillar 2. Is designed to be sealed.

[0007]

However, in the conventional weather strip 5 described above, when the sliding rear door 4 is closed, the inner surface of the inner piece 5c of the hollow seal portion 5b abuts the outer surface 2a of the center pillar 2 and is hollow. Since the entire seal portion 5b is flexed and deformed outward, the elastic reaction force by the hollow seal portion 5b becomes large. Therefore, the closeability of the sliding rear door 4 deteriorates, and a large closing force is required.

Further, when the sliding trajectory angle θ of the sliding rear door 4 is large, the tip 5f of the outer piece 5d of the hollow seal portion 5b hits the rear end edge 3b of the front door 3 and the hollow seal portion 5b. May be deformed abnormally and durability may be reduced.

Further, when the sliding rear door 4 is closed,
Since the outer edge of the tip 5f of the outer piece 5d of the hollow seal portion 5b moves while rubbing against the rear edge 3b of the front door 3, the tip 5f wears after a long period of use and causes deterioration of sealing performance. Is causing problems.

The present invention has been devised in view of the above-mentioned conventional problems, and suppresses a large reaction force of the weather strip when the sliding rear door is closed and prevents deterioration of durability and sealing performance. It is an object.

[0011]

In order to solve the above-mentioned problems, according to the present invention, a base fixed to the front end of a sliding rear door and a sliding rear door integrally provided on the base are provided. In a weather strip having a hollow seal portion that abuts the rear end portion of the front door that faces the outer surface of the pillar when the pillar is closed, the approximate center position of the hollow seal portion is bent toward the rear end portion of the front door. A support lip, which is freely formed, is provided at the vehicle-side connecting end edge of the base portion and the hollow seal portion, the tip edge of which is in elastic contact with the outer surface of the pillar in a substantially vertical direction when the sliding rear door is closed. The elastic reaction force of the support lip is transmitted to the hollow seal portion.

[0012]

In the above structure, when the sliding rear door is closed, the tip edge of the support lip elastically contacts the outer surface of the pillar to generate an elastic reaction force. Therefore, the elastic reaction force is transmitted to the hollow seal portion via the connecting portion between the base portion and the hollow seal portion, whereby the central portion of the hollow seal portion is approximately L.
It bends in a letter shape and bulges outward to deform. Therefore, the outer end of the central portion of the hollow seal portion elastically contacts the outer edge of the rear end portion of the front door from the inside of the vehicle.

Therefore, it is possible to prevent a large reaction force from being generated in the hollow seal portion when it is closed, and to improve the sealing performance by elastically contacting the outer edge of the hollow seal portion.

Moreover, when the sliding rear door is opened, the tip edge of the support lip is immediately separated from the outer side surface of the pillar to restore the hollow seal portion to the original shape, that is, the curved shape, so that the outer edge is front. Since it is separated from the outer edge of the rear end of the door, friction between the outer edge and the outer edge of the rear end of the front door is prevented.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment in which a weather strip for a sliding rear door according to the present invention is applied to a conventional one-box type vehicle.

That is, a front door 3 on the front side and a sliding rear door 4 on the rear side are provided across the center pillar 2, and a weather strip 11 is provided at a front end portion 4a of the sliding rear door 4.

As shown in FIG. 1, the weather strip 11 is integrally provided on the front end side of the base 12 and the base 12 fixed along the outer peripheral surface of the front end 4a of the slide-type rear door 4. A hollow seal portion 13 and a support lip 14 integrally provided near a connection portion between the hollow seal portion 13 and the base portion 12 inside the vehicle are provided.

The base portion 12 is formed of a relatively hard rubber material such as solid rubber, is bent in a substantially V shape along the outer peripheral surface of the vehicle, and has a resin clip (not shown). It is fixed inside the front end portion 4a via an adhesive.

The hollow seal portion 13 is formed of a flexible rubber material such as sponge rubber, and both side portions 13a and 13b are connected to both end portions of the base portion 12 to form a hollow portion 14c therein and an outer surface thereof. 13c is formed in a curved shape substantially along the approach locus X when the sliding rear door 4 is closed. Further, the hollow seal portion 13 is formed such that the central portion 13d is bendable outward.

The support lip 14 is formed of hard solid rubber in a flat plate shape, and a base end edge 14a thereof is connected to a connecting portion between the vehicle inner side portion 13a of the hollow seal portion 13 and one end portion of the base portion 12. In addition, the tip edge 14b is oriented in the vertical direction with respect to the outer side surface 2a of the center pillar 2. Further, when the sliding rear door 4 is closed, the support lip 14 has a tip edge 4 a whose outer surface 2 is the center pillar 2.
The width W is set such that a predetermined small elastic reaction force is generated by hitting a.

Therefore, according to this embodiment, when the sliding rear door 4 is slid from the open position of FIG. 1 along the approach locus X and closed, first, as shown in FIG. Is the outer surface 2 of the center pillar 2.
It makes elastic contact from a direction perpendicular to a. Then, the small elastic reaction force generated in the support lip 14 is transmitted to the hollow seal portion 13 via the base end edge 14a, and the elastic reaction force causes the central portion 13d to bend into a substantially L-shape and the front door 3
It bulges and deforms in the direction of the rear edge 3b.

Therefore, the bent outer edge of the central portion 13d of the hollow seal portion 13 elastically contacts the rear end portion 3a of the front door 3 and the rear end edge 3b with a predetermined elastic reaction force. Therefore, the hollow seal portion 13 reliably seals between the front end portion 4a of the sliding rear door 4 and the rear end portion 3a of the front door 3 and also securely seals between the center pillar 2 and the support lip 14. be able to. As a result, a double seal is obtained, and not only watertightness but also sound insulation is improved.

Further, the elastic reaction force in the vertical direction generated by the support lip 14 hitting the center pillar 2 when the sliding rear door 4 is closed is sufficiently small, so that the closing property of the sliding rear door 4 can be prevented from being deteriorated. .

On the other hand, when the sliding rear door 4 is slid rearward (advance) trajectory X and opened, the leading edge 14b of the support lip 14 is separated from the outer surface 2a of the center pillar 2 at the same time.

Therefore, in the hollow seal portion 13, the elastic reaction force from the support lip 14 is released, and the hollow seal portion 13 is returned to the shrinking deformation, that is, the original curved shape, and the outer surface 13c is separated from the rear end edge 3b of the front door 3. .

As a result, the hollow seal portion 13 and the rear edge 3b of the front door 3 when the sliding rear door 4 is opened.
It is possible to surely prevent the friction from being generated and the abrasion from occurring.

[0028]

As described above, according to the present invention,
When the sliding rear door is closed, the elastic reaction force of the supporting lip elastically contacted with the pillar causes the hollow seal portion to bulge and deform outwardly and elastically contact the rear end portion of the front door.

For this reason, not only the sliding rear door and the front door but also the pillar are double-sealed to improve the watertightness and sound insulation, and of course, the sliding rear door by a large closing reaction force as in the conventional case is used. The deterioration of the closing property is prevented.

Further, since the hollow seal portion is elastically contacted at an appropriate position at all times without being crushed by the rear end edge of the front door as in the conventional case, the durability can be improved.

Furthermore, when the sliding rear door is opened,
At the same time that the support lip separates from the outer surface of the pillar, the hollow seal part also shrinks and deforms to its original curved shape and separates from the rear end of the front door. Therefore, abrasion due to friction between the rear end portion of the front door and the central seal portion is prevented, and also in this respect, durability can be improved and good sealing performance can be maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of essential parts showing the action of the sliding rear door of this embodiment when it is closed.

FIG. 3 is a side view of a vehicle to which weather strips of the present embodiment and a conventional example are applied.

FIG. 4 is a cross-sectional view of an essential part showing a conventional weather strip.

FIG. 5 is a cross-sectional view of a main part showing an operation when a conventional sliding rear door is closed.

[Explanation of symbols]

 2 Center Pillar 3 Front Door 3a Rear End 3b Rear Edge 4 Sliding Rear Door 4a Front End 11 Weather Strip 12 Base 13 Hollow Seal 13d Center Part 14 Support Lip 14b Tip Edge

Claims (1)

[Claims] 1. A base portion fixed to a front end portion of a sliding rear door, and a base portion integrally provided on the base portion. When the sliding rear door is closed, the rear end portion abuts on a rear end portion of a front door near an outer surface of a pillar. In a weather strip provided with a hollow seal portion, while forming the substantially central position of the hollow seal portion to be bendable in the direction of the rear end portion of the front door, the vehicle-side connecting edge of the base portion and the hollow seal portion, When the sliding rear door is closed, a supporting lip whose tip edge elastically contacts the outer surface of the pillar from a direction substantially perpendicular to the outer surface of the pillar is provided, and an elastic reaction force of the supporting lip is transmitted to the hollow seal portion. Rear door weatherstrip structure