JP2923626B2 - Automotive weather strip - Google Patents

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 an automobile, which is attached to a door, elastically contacts an opening edge of a body, and seals a gap between the opening of the door and the body. And improved sealability and appearance.

[0002]

2. Description of the Related Art The basics of a weather strip to which the present invention is applied will be described with reference to FIGS. The body opening edge 1 in which the door 2 pivoting about the hinge axis HH at the front end fits is provided with convex steps 5 and 6, and the weather strip 3 attached to the door 2 is provided on the convex steps 5 and 6.
Abuts and seals. On the door hinge side of the body opening edge 1, a protruding step 5 is formed by a vehicle inner side wall 5a and a vehicle outer side wall 5d. On the roof side or the front pillar side of the body opening edge 1, the indoor side wall 6a and the intermediate wall 6c are formed. And the outdoor side wall 6d constitute a protruding step portion 6. And the door hinge side,
Convex step with roof side or front pillar side 5,
6 is formed continuously, the vehicle inner side wall 5a is divided into two,
The interior side wall 6a and the intermediate wall 6c are continuous with the exterior side wall 5d.
And the outdoor wall 6d are also continuous.

When a recessed step 7 for attaching a weatherstrip is provided around the door 2, the recessed step 7 is attached to a peripheral wall 8 for attaching a weatherstrip base at a direction substantially perpendicular to the door panel.
And an outer wall 9 substantially parallel to the door panel. And a substantially vertical peripheral wall 8 near the hinge axis H-H,
When the weather strip 3 with the hollow seal portion is attached to the substantially horizontal or inclined peripheral wall 8 which is continuous with the upper part of the substantially vertical peripheral wall 8, the movement trajectory Q of the weather strip 3 with respect to the hinge axis HH. , The hinge axis HH
Near the top T of the hollow seal portion 3b as shown in FIG.
Abuts against the inner side wall 5a of the convex portion 5 on the hinge side, and the side surface M of the hollow seal portion 3b is mainly formed by the intermediate wall 6 on the roof side or the front pillar side as shown in FIG.
c.

[0004] In the place where the contact portion of the weather strip 3 is transferred from the inner side wall 5a on the door hinge side to the intermediate wall 6c on the roof side or front pillar side,
As shown in FIG. 4, a narrow line contact is made between the seal contact surface S and the corner 6b of the protruding step 6 on the roof side or front pillar side, and as shown in FIG.
Was rubbed into the indoor side wall 6a, and the sealing was likely to be insufficient.

More specifically, as a weather strip for an automobile which is attached to a door, elastically contacts an opening edge of a body, and seals between the opening edge of the door and the body, as shown in FIGS. A hollow seal portion 3b elastically contacting the body opening edge 1 is integrally connected to a base portion 3a attached to the peripheral wall 8, and a seal lip 3c is integrally connected to a vehicle outside.

Further, the hollow seal portion 3 of the linear extrusion molding portion is provided.
The seal contact surface S of b is formed in an arc-shaped cross section, and a hinge shaft H- for attaching the door 2 to the body opening edge 1 so as to be openable and closable.
The molding part interposed at the corner of the part that moves from the H-side vertical part to the front pillar side for the front door and to the roof side for the rear door is a hollow seal part 3b so as to be continuously connected to the linear extrusion part. Body opening edge 1 that has a continuously changing cross-sectional shape and makes elastic contact with it
The cross-sectional shapes of FIG.
As shown in a YY section of FIG. 1 and a ZZ section of FIGS.

However, the weather strip 3
Closes the door 2 and makes it elastically contact the body opening edge 1.
Since the hollow seal portion 3b of the corner-shaped molded portion is not formed as shown in FIGS. 10 and 12, the hollow seal portion 3b of the corner-shaped molded portion is not formed as set in FIGS. -As shown in Fig. 13, the seal may be broken or the seal may be defective.
There is a problem that the appearance is impaired.

That is, in the above-described conventional example, as shown in FIGS. 9 to 13, different deformation occurs depending on the cross-sectional position, and the width of the seal contact surface S changes.
The position also shifts from one side to the other along the arcuate surface, and at the transition area, the seal contact surface S
However, as shown in FIG. As shown in FIGS. 11 and 13, the hollow seal portion 3b
However, there is a drawback that the bent portion that is convex toward the indoor side of the body opening edge 1 may go under the indoor side, thereby deteriorating the sealing performance.

[0009]

The problem to be solved is that in the conventional weather strip, the formation of the sealing contact surface S is not performed as set, and the sealing surface has
The present invention has solved the above-mentioned problems, and has an excellent sealing property and appearance. It is intended to provide a strip.

[0010]

Means for Solving the Problems A weather strip for an automobile according to the present invention has a substantially circular cross section in which a base portion 4a attached to a peripheral wall 8 of a door is elastically contacted with convex portions 5, 6 of a body opening edge 1. The door 2 can be opened and closed at the body opening edge 1 in an automobile weather strip in which a hollow sealing portion 4b having an arc-shaped sealing surface is joined to seal between the convex steps 5, 6 of the body opening edge and the door peripheral wall 8. Hinge axis H to be attached
-When the hollow seal portion 4b starts to contact the convex step portions 5 and 6 of the body opening edge 1 with the hollow seal portion 4b of the molded portion interposed at the corner portion that transitions from the vertical portion on the H side to the inclined or horizontal portion. A raised portion U that contacts the outer surface of the raised steps 5 and 6 of the body opening edge 1 is formed on the outer side of the top of the hollow seal portion, and the raised portion U is thicker than other portions of the hollow seal portion 4b. By forming the seal contact surface S as set, the width of the seal contact surface S at the corner is widened, and furthermore, the seal contact surface S is prevented from being bent toward the indoor side, bent, and wrinkled, The present invention solves the problem that even if there is a slight dimensional variation, the sealing property, the appearance and the like are impaired.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to FIGS. 1 to 6 and FIGS. 14 to 17, wherein 1 is a body opening edge, 2 is a door, 8 is a peripheral wall of the door 2, 9 is an outer wall formed outside the peripheral wall 8 of the door 2;
Is a weather strip attached to the peripheral wall 8 for sealing between the door and the opening edge of the body, and is configured as follows.

Reference numeral 4a denotes a base portion attached to the peripheral wall 8, 4b,
Reference numeral 4c denotes a hollow seal portion and a seal lip which are respectively elastically contacted with the body opening edge 1, and the hollow seal portion 4b
Has a sealing surface having an arc-shaped cross section, is integrally connected to the vehicle interior of the base portion 4a, and the seal lip 4b is integrally connected to the vehicle exterior. U has a raised portion having a central portion that is high and gradually lowers toward the periphery, and a mold forming portion that is interposed in a corner portion that moves from a hinge side to a roof side or a front pillar side for opening and closing the door 2 to the body opening edge 1. Seal lip 4 of the hollow seal portion 4b
c, and the thickness between the raised portion U and the other portions is substantially different.

When the door 2 is closed, when the door 2 is closed, the weather strip 4 starts to resiliently contact the body opening edge 1 from a point close to the hinge. As shown in FIGS. , The raised portion U is provided, so that the intermediate wall 6 of the body opening edge 1 is restrained by the raised portion U.
c, slipping from the corner 6b toward the indoor side wall 6a, without the hollow seal portion 4b penetrating, the seal contact surface S is easily moved from one side of the arc to the other side, and the width of the seal contact surface S is increased. Is sufficiently wide even in the transition region, and there is no breakage, wrinkles, etc., and even if there is slight variation, the sealability, appearance, etc. are not impaired.

[0014]

Since the present invention is configured as described above, the corner molded portion, which had a problem in the past, is restrained by the raised portion U, so that the hollow seal portion 4b does not go under and the seal is formed. The movement of the contact surface S becomes remarkably easy, the width thereof is sufficiently wide, there is no breakage, no wrinkles, etc., and even if there is a slight dimensional variation, the sealability, appearance, etc. are not impaired. Absent.

[Brief description of the drawings]

FIG. 1 is a side view of a body with a door removed.

FIG. 2 is a side view of a door removed.

FIG. 3 is a sectional view taken along line XX of FIGS. 1 and 2 in a state where a door is fitted.

FIG. 4 is a cross-sectional view of a normal state of FIG. 1 and FIG.
It is a Y sectional view.

FIG. 5 is a perspective view of an abnormal state in which the door is fitted in FIG.
It is a Z sectional view.

FIG. 6 is an enlarged principle diagram of a portion D in FIG. 1;

FIG. 7 is a perspective view showing transition of a contact surface of the seal.

FIG. 8 is a sectional view showing a conventional example.

FIG. 9 is a sectional view taken along line XX of FIGS. 1, 2, and 6 showing a standard elastic contact state with a body opening edge in a conventional example.

FIG. 10 is a sectional view taken along the line YY of FIGS. 1, 2, and 6 showing a standard elastic contact state with a body opening edge in the conventional example.

FIG. 11 is a sectional view taken along the line YY of FIGS. 1, 2 and 6 showing a state of elastic contact in which an abnormal undercut has occurred with a body opening edge in the conventional example.

FIG. 12 is a sectional view taken along the line ZZ of FIGS. 1, 2 and 6 showing a standard elastic contact state with a body opening edge in a conventional example.

FIG. 13 is a perspective view showing an elastic contact state in which an abnormal undercut occurs with a body opening edge in a conventional example.
FIG. 3 is a ZZ cross-sectional view of FIG.

FIG. 14 is a sectional view showing an embodiment of the present invention.

FIG. 15 is a sectional view taken along line XX of FIGS. 1, 2, and 6 showing a state of elastic contact with a body opening edge according to the embodiment of the present invention.

FIG. 16 is a sectional view taken along the line YY of FIGS. 1, 2, and 6 showing a state of elastic contact with a body opening edge according to the embodiment of the present invention.

FIG. 17 is a sectional view taken along the line ZZ of FIGS. 1, 2, and 6 showing a state of elastic contact with the body opening edge according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body opening edge 2 Door 3 Weather strip 3a Base part 3b Hollow seal part 3c Seal lip 4 Weather strip 4a Base part 4b Hollow seal part 4c Seal lip 5 Convex step 5a Car inner side wall 5d Car outer side wall 6 Convex step part 6a Interior side wall 6b Square 6c Intermediate wall 6d Indoor side wall 7 Recessed step 8 Peripheral wall 9 Outer wall HH Hinge axis M Side surface Q Movement locus S Seal contact surface T Top U

Claims (1)

(57) [Claims] 1. A base portion (4a) attached to a peripheral wall (8) of a door has a sealing surface having a substantially arc-shaped cross section which resiliently contacts a convex step (5, 6) of a body opening edge (1). The hollow seal portion (4b) is joined to form a convex step (5, 6) at the opening edge of the body.
In a weather strip for an automobile, which seals between a door and a door peripheral wall (8), a door (2) is openably and closably attached to a body opening edge (1) from a vertical portion on a hinge shaft (HH) side to an inclined or horizontal portion. The hollow seal part is attached to the hollow seal part (4b) of the molding part interposed at the corner part to be transferred.
Hollow portions thread forming contact with the exterior surface of <br/> convex stepped portion of the body opening edge (U) when starting to contact with the convex stepped portion of the di opening edge
Formed on the outside of the head of the seal , and the raised part (U)
Is formed thicker than other portions of the hollow seal portion (4b).
Weather strip for a car to be.