JP2002187434A - Joint structure for corner of glass run - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the joint strength of a corner part of a glass run. SOLUTION: A metal-molded corner molding part 14 and an extrusion molding part are integrally jointed together to form the joint structure of the corner of the glass run 2. The extrusion molding part comprises a body having an almost U-shaped section, a vehicle-interior lip extending from the front end of the vehicle-interior sidewall of the body, and a vehicle-exterior lip extending from the front end of the vehicle exterior sidewall of the body. The corner molding part 14 has a vehicle-interior lip corresponding part 48 jointed to the vehicle-interior lip, and a vehicle-exterior lip corresponding part 50 joined to the vehicle exterior lip, wherein the joint between the vehicle-interior lip corresponding part 48 and the vehicle-interior lip is formed to be inclined at a prescribed angle against the longitudinal direction of the extrusion molding part, and the joint between the vehicle-exterior lip corresponding part 50 and the vehicle-exterior lip is formed to be inclined at a prescribed angle against the longitudinal direction of the extrusion molding part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass run corner joining structure.

[0002]

2. Description of the Related Art A peripheral portion of a window glass in a front door or a rear door of an automobile is slidably held and sealed by a door glass run provided along a door sash.

[0003] This door glass run is generally extruded using rubber or a resin material. However, at a corner portion curved in a substantially L-shape, the upper side portion of the window glass is pressed at the ascending limit position. It is conventionally known that a terminal of a glass run horizontal portion and a terminal of an extruded glass run vertical portion disposed along the vertical direction of the vehicle are connected by a corner molded portion formed by a mold. I have.

A door glass run 60 shown in FIG. 5 has a glass run horizontal portion 62, a glass run vertical portion 64, and a corner forming portion 86.

The glass run horizontal portion 62 and the glass run vertical portion 64 have main bodies 61 and 63, respectively, having a substantially U-shaped cross section for accommodating the outer periphery of the window glass.

The main body portion 61 of the glass run horizontal portion 62 has an inner side wall 66 and an outer side wall 68 facing each other, a bottom wall 70 connecting the pair of side walls 66 and 68 to each other, and
Consists of The main body 63 of the glass run vertical part 64
Are the inner side wall 72 and the outer side wall 74 facing each other.
And a bottom wall 76 connecting the pair of side walls 72 and 74 to each other.

At the tip of each of the inner side walls 66 and 72, an inner lip 7 which is in contact with the inner side surface of the outer periphery of the window glass is provided.
8, 80 are formed respectively.

At the tip of each of the outer side walls 68 and 74, an outer lip 8 which is in contact with the outer surface of the outer edge of the window glass.
2, 84 are formed respectively.

The corner forming portion 86 has a glass run horizontal portion 62 and a glass run vertical portion 64 on each of the vehicle interior lips 7.
8, 80 and the outer lips 82, 84 are curved at a predetermined curvature so as to be continuous with each other, and an inner lip corresponding portion 88 and an outer lip corresponding portion 90 having substantially the same cross-sectional shape as these lips are formed. Have been.

The door glass run 60 is provided on each vehicle interior lip 7 in order to achieve a flash surface of the vehicle body.
8, 80 and the inside lip corresponding portion 88 are formed relatively large with respect to each outside lip 82, 84 and the outside lip corresponding portion 90.

A joint 92a between the inside lip corresponding portion 88 and the inside lip 78 of the grass run horizontal portion 62 and a joint 92b between the outside lip corresponding portion 90 and the outside lip 82 of the grass run horizontal portion 62 are: The glass run horizontal portion 62 is formed so as to be orthogonal to the longitudinal direction.

On the other hand, a joint 92a between the inside lip corresponding portion 88 and the inside lip 80 of the grass run vertical portion 64 and a joint 92b between the outside lip corresponding portion 90 and the outside lip 84 of the grass run vertical portion 64 are: Glass run vertical part 6
4 so as to be orthogonal to the longitudinal direction.

[0013]

In the door glass run formed as described above, when the inner lip corresponding portion 88 and the outer lip corresponding portion 90 are bent and deformed by the contact of the window glass, the respective lip corresponding portions are deformed. 8
Since the circumferential length of the front end side of the glass run 8 and 90 is extended, the inner lip 78 and the outer lip 82 of the grass run horizontal portion 62 extend along the longitudinal direction of the grass run horizontal portion 62, that is, the pushing direction of the grass run horizontal portion 62. While a tensile stress acts, the inside lip 80 of the glass run vertical portion 64
A tensile stress acts on the outer lip 84 along the longitudinal direction of the glass run vertical portion 64, that is, the pushing direction of the glass run vertical portion 64.

Accordingly, all of the tensile stresses acting on the inner lip 78 and the outer lip 82 of the grass run horizontal portion 62 act on the joining portion 92, and the inner lip 78 of the grass run horizontal portion 62 and the inner lip correspond to each other. Part 8
8 and a joint 92b between the outer lip 82 of the glass run horizontal portion 62 and the outer lip corresponding portion 90.
There is a problem that cuts easily occur.

Similarly, a joint 94a between the inside lip 80 of the glass run vertical portion 64 and the inside lip corresponding portion 88 and a joint 94b between the outside lip 84 and the outside lip corresponding portion 90 of the grass run vertical portion 64 are formed. There is a problem that the cut is easily generated.

The joints 92a, 94a and the joint 92
b and 94b, the glass run 60 described above was used.
Since the inside surface lips 78 and 80 and the inside lip corresponding portion 88 are relatively larger than the outside lips 82 and 84 and the outside lip corresponding portion 90 due to the flash surface of the vehicle body, Inside car lip 7
8, 80 and the amount of bending of the vehicle interior lip corresponding portion 88 are larger than the bending amounts of the respective outer lips 82, 84 and the vehicle outer lip corresponding portion 90, and the bonding portions 92a, 94a are larger than the bonding portions 92b, 94b. Cuts easily occur.

[0017]

SUMMARY OF THE INVENTION In view of the above, the present invention is directed to a glass run disposed along a door sash of an automobile, and the glass run is disposed at a portion corresponding to a corner of the door sash. It is a corner portion joint structure of a glass run in which a substantially linear extruded portion that is extruded is integrally connected to a corner molded portion that is molded, and the extruded portion is contacted with a window glass. The tip has a seal lip that bends and deforms as a free end to slidably seal the outer peripheral edge of the window glass, and the corner forming portion has a seal lip corresponding portion joined to the seal lip. The above-mentioned seal lip corresponding portion has a glass run corner which slidably seals the outer peripheral edge of the window glass by bending and deforming with the free end when the window glass abuts. In section joining structure, the joint between the seal lip and said seal lip corresponding unit is characterized in that it is formed such that a predetermined angle inclined to the longitudinal direction of the extruded part. When the window glass abuts and the corresponding portion of the seal lip bends and deforms, a tensile stress is generated at the joint between the seal lip and the corresponding portion of the seal lip along the longitudinal direction of the extruded portion. The joint with the corresponding part is inclined with respect to the direction in which the tensile stress acts.

That is, since the tensile stress acting on the joint due to the bending deformation of the seal lip corresponding portion does not directly act on the joint in the vertical direction, the vertical stress at the joint is relatively reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, at the joint between the seal lip and the corresponding portion of the seal lip, the base end of the seal lip which is a fixed end is the seal lip. Is formed so as to be located closer to the corner forming portion than the tip of the.

Accordingly, the peripheral length on the distal end side of the seal lip corresponding portion becomes longer than the peripheral length on the base end side of the seal lip corresponding portion, and the distal end of the seal lip corresponding portion when the seal lip corresponding portion is bent and deformed. Side elongation becomes relatively small.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a corner joint structure of a glass run 2 according to the present invention.
Is provided at a corner portion of the rear portion of the door 4 indicated by reference symbol A in FIG. In addition, 7 in FIG. 2 is a window glass opening of a door.

The glass run 2 made of rubber or resin material and arranged along the door sash portion 8 of the automobile is an extruded glass run horizontal portion 10 in which the upper side of the elevating window glass 6 is pressed at its upper limit position. And an extruded glass run vertical portion 12 disposed along the vertical direction of the vehicle. At the corner of the rear portion of the door 4, the terminal of the glass run horizontal portion 10 and the glass run vertical portion 1 are provided.
The two terminals are joined to each other by die molding via a substantially L-shaped corner molding portion 14.

The glass run horizontal portion 10 which is an extruded portion
Are opposed to each other on the inner side wall 16 and the outer side wall 18.
And a bottom wall 20 connecting these side walls 16 and 18 to each other.
And a substantially U-shaped groove 24 formed by the main body 22 so that the outer peripheral edge of the window glass 6 can be accommodated therein.

An inner lip 26 is formed at the end of the inner side wall 16 as a seal lip extending toward the outer side of the vehicle and sealingly sealing the inner side surface of the outer peripheral edge of the window glass 6 in the groove 24. An outer lip 28 is formed at the end of the outer side wall 18 as a seal lip extending toward the inner side of the vehicle and sealingly sealing the outer surface of the outer peripheral edge of the window glass 6 in the groove 24. . still,
Reference numeral 30 denotes a sub lip which is pressed against the upper side of the window glass 6 at the upper limit position of the window glass 6.

The glass run vertical portion 12 which is an extruded portion
Are the inner side wall 32 and the outer side wall 34 facing each other.
And a bottom wall 36 connecting these side walls 32 and 34 to each other.
The main body 38 has a substantially U-shaped cross section, and the outer peripheral edge of the window glass 6 can be accommodated in a substantially U-shaped groove 40 formed by the main body 38.

An inner lip 42 is formed at the tip of the inner side wall 32 as a seal lip that extends toward the outer side of the vehicle and seals the inner surface of the outer periphery of the window glass 6 in the groove 40 so as to be slidable. An outer lip 44 is formed at the end of the outer side wall 34 as a seal lip extending toward the inner side of the vehicle and sealingly sealing the outer surface of the outer peripheral edge of the window glass 6 in the groove 40. .

Here, the inside lip 26 of the grass run horizontal portion 10 and the inside lip 42 of the grass run vertical portion 12 have substantially the same cross-sectional shape. The outer lip 28 of the grass run horizontal portion 10 and the grass run vertical portion 1
The second vehicle exterior lip 44 has substantially the same cross-sectional shape. Furthermore, in order to achieve a flash surface of the vehicle, the inner lips 26, 42 are formed to be relatively larger than the outer lips 28, 44.

The corner forming portion 14 is formed with a groove corresponding portion 46 in which the groove 24 of the glass run horizontal portion 10 and the groove 40 of the glass run vertical portion 12 are made continuous and the outer peripheral edge of the corner portion of the window glass 6 can be accommodated. Have been.

Further, the corner forming portion 14 includes an inner lip corresponding portion 48 as a seal lip corresponding portion formed to have substantially the same cross-sectional shape as the both inner lips 26, 42,
An outer lip corresponding portion 50 is formed as a seal lip corresponding portion having substantially the same cross-sectional shape as the both outer lips 28 and 44.

The vehicle interior lip corresponding portion 48 is provided with a front end 48a of the vehicle interior lip corresponding portion 48 on the opening surface of the window glass opening 7, that is, on the door surface so that the both vehicle interior lips 26 and 42 are connected to each other. And the base end 48b is curved at a predetermined curvature.

More specifically, the base end 48b of the vehicle interior lip corresponding portion 48 is formed in a substantially arc shape on the door surface over the entire length. Tip 48 of the inside lip corresponding part 48
a has a substantially arcuate portion on the door surface, but has joints 52 and 54 with the extruded portions 10 and 12.
In the vicinity (details will be described later), it has a substantially linear shape.
Further, the distal end 48a and the proximal end 4 of the vehicle interior lip corresponding portion 48.
The center of curvature of the curve 8 b is located on the inner peripheral side of the window glass opening 7.

The outer lip corresponding portion 50 has a tip 50a of the outer lip corresponding portion 50 on the door surface, that is, on the opening surface of the window glass opening 7, so that the two outer lips 28 and 44 are continuous with each other. And the base end 50b has a portion which is curved at a predetermined curvature.

More specifically, although the front end 50a and the base end 50b of the outer lip corresponding portion 50 have a substantially arc-shaped portion on the door surface, the extruded portion 1
In the vicinity of the joints 52 and 54 with 0 and 12 (details will be described later), they have a substantially linear shape. The center of curvature of the curved portion of the distal end 50 a and the proximal end 50 b of the outer lip corresponding portion 50 is located on the inner peripheral side of the window glass opening 7.

The joint 52a between the inside lip corresponding portion 48 and the inside lip 26 of the grass run horizontal portion 10 and the joint 52b between the outside lip corresponding portion 50 and the outside lip 28 of the grass run horizontal portion 10 are: It is formed so as to be inclined at a predetermined angle with respect to the longitudinal direction of the glass run horizontal portion 10, that is, the extrusion direction of the glass run horizontal portion 10.

More specifically, a joint portion 52 between the inside lip corresponding portion 48 and the inside lip 26 of the glass run horizontal portion 10 is provided.
a, the tip 48a of the vehicle interior lip corresponding portion 48
Is formed so as to protrude more toward the glass run horizontal portion 10 side than the base end 48b of the vehicle interior lip corresponding portion 48, and a joint portion 52b between the vehicle outer lip corresponding portion 50 and the vehicle outer lip 28 of the glass run horizontal portion 10 is formed. In FIG. 5, the distal end 50a of the outer lip corresponding portion 50 is formed so as to protrude more toward the grass run horizontal portion 10 than the base end 50b of the outer lip corresponding portion 50.

On the other hand, a joint 54a between the inside lip corresponding portion 48 and the inside lip 42 of the grass run vertical portion 12 and a joint 54b between the outside lip corresponding portion 50 and the outside lip 44 of the grass run vertical portion 12 are: Glass run vertical part 1
2, that is, inclined at a predetermined angle with respect to the extrusion direction of the glass run vertical portion 12.

More specifically, a joint 54 between the inside lip corresponding portion 48 and the inside lip 42 of the vertical portion 12 of the glass run.
a, the tip 48a of the vehicle interior lip corresponding portion 48
Is formed so as to protrude more toward the grass run vertical portion 12 side than the base end 48b of the vehicle interior lip corresponding portion 48, and a joining portion 54b between the vehicle outside lip corresponding portion 50 and the vehicle outside lip 44 of the glass run vertical portion 12 is formed. In FIG. 5, the distal end 50a of the outer lip corresponding portion 50 is formed so as to protrude more toward the grass run vertical portion 12 than the base end 50b of the outer lip corresponding portion 50.

Further, a joint 52a between the inside lip corresponding portion 48 and the inside lip 26 of the grass run horizontal portion 10 and a joint 54a between the inside lip corresponding portion 48 and the inside lip 42 of the grass run vertical portion 12 are: Each is formed so as to pass through the position where the bending of the base end 48b of the vehicle interior lip corresponding portion 48 ends.

The inner lip corresponding portion 4 of the joint portion 52a
When the coordinates along the longitudinal direction of the grass run horizontal portion 10 are set, the position of the base portion 48b at the base end 48b and the position of the joint portion 52b at the base end 50b of the vehicle outer lip corresponding portion 50 are the same on these coordinates. And the joint 54
a at the base end 48b of the inner lip corresponding portion 48 and the base 50 of the outer lip corresponding portion 50 of the joint 54b.
The position at b is the same on the coordinates when coordinates along the longitudinal direction of the grass run vertical portion 12 are set.

Further, the inner side wall 16, the outer side wall 18, the bottom wall 20, and the corner forming portion 1 of the glass run horizontal portion 10 are formed.
4 are formed so as to be orthogonal to the longitudinal direction of the glass run horizontal portion 10, and each of the inner side wall 32, the outer side wall 34 and the bottom wall 36 of the glass run vertical portion 12, and the corner forming portion 14. The joint is formed so as to be orthogonal to the longitudinal direction of the glass run vertical part 12.

In the glass run 2 described above, when the window glass 6 abuts and the inner lip corresponding portion 48 and the outer lip corresponding portion 50 bend and deform in the vehicle width direction, the inner lip 26 of the horizontal glass portion 10 is deformed. 52a between the outer lip 28 and the outer lip corresponding portion 50 of the glass run horizontal portion 10
2b is subjected to a tensile stress along the longitudinal direction of the glass run horizontal portion 10. Similarly, the grass run vertical section 12
Joint portion 54a between the inner lip 42 and the inner lip corresponding portion 48 of the vehicle and the outer lip 44 of the glass run vertical portion 12
A tensile stress along the longitudinal direction of the glass run vertical portion 12 acts on the joint portion 54b between the glass run vertical portion 12 and the outer lip corresponding portion 50.

In the corner joining structure of the glass run 2 configured as described above, each of the vehicle interior lips 26 and 42 is provided.
Joints 52a and 54a between the lip corresponding portion 48 and the vehicle interior lip
And each outer lip 28, 44 and the outer lip corresponding part 5
The respective tensile stresses F acting on the respective joints 52b, 54b with the respective zeros are applied to the respective joints 52a, 52b, 54a, 5
Since it does not act directly in the vertical direction of 4b, the joining strength at each joining portion 52a, 52b, 54a, 54b can be relatively improved.

Referring to FIG. 3, a joint portion 52 between the inner lip 26 of the glass run horizontal portion 10 and the inner lip corresponding portion 48 is provided.
In more detail, taking a as an example, the tensile stress F acting on the joint 52a is decomposed into a shear stress f1 along the joint 52a and a vertical stress f2 acting on the joint 52a in the vertical direction. be able to. Here, as the vertical stress f2 is larger, the cut along the joint 52a is more likely to occur.

However, in this embodiment, since the joint 52a is inclined with respect to a plane perpendicular to the longitudinal direction of the horizontal glass run section 10, the vertical stress f2 acting in the vertical direction of the joint 52a is reduced by the tensile force. The stress F is relatively smaller than the stress F, and the occurrence of cuts along the joint 52a can be prevented.

A joint 52a between the inner lip 26 of the glass run horizontal portion 10 and the inner lip corresponding portion 48 is formed.
Is inclined with respect to a plane orthogonal to the longitudinal direction of the glass run horizontal portion 10, so that the joining area between the inboard lip 26 and the inboard lip corresponding portion 48 also increases.
The magnitude of the vertical stress f2 acting per unit area of 2a is also reduced, so that the occurrence of cuts along the joint 52a can be more effectively prevented.

Each of the joints 52a, 52b, 54a,
54b, the tip 4 of each lip corresponding portion 48, 50
8a and 50a are base ends 48 of the lip corresponding portions 48 and 50, respectively.
b, 50b, so as to protrude more toward the extruded portions 10, 12 than the lip corresponding portions 48, 50b.
The peripheral length of the front end 48a, 50a side of 50 is longer than the peripheral length of the base end 48b, 50b side of each lip corresponding part 48, 50, and each lip corresponds when each lip corresponding part 48, 50 is bent and deformed. The elongation of the ends 48a, 50a of the portions 48, 50 becomes relatively small, and the joints 52a, 52b, 54
The magnitude of each tensile stress acting on a and 54b becomes relatively small. Therefore, each joint 52a, 52b, 54
The occurrence of cuts along a and b can be more effectively prevented.

The glass run horizontal portion 10 and the glass run vertical portion 12 can be joined to the corner forming portion 14 as in the second embodiment shown in FIG.

In this second embodiment, the joints between the inner side wall 16 and the outer side wall 18 of the glass run horizontal portion 10 and the corner forming portion 14 are connected to the glass run horizontal portion 10.
The joint between the inner side wall 32 and the outer side wall 34 of the glass run vertical portion 12 and the corner forming portion 14 is formed to be inclined with respect to the longitudinal direction of the glass run vertical portion 12. Is formed.

The joint (not shown) between the bottom wall 20 and the corner forming portion 14 is formed so as to be orthogonal to the longitudinal direction of the glass horizontal portion 10, and the bottom wall 36 and the corner forming portion 1 are formed.
The connection portion (not shown) with the glass run 4 is formed so as to be orthogonal to the longitudinal direction of the glass run vertical portion 12.

The joints 56a and 58a between the inner lips 26 and 42 and the inner lip corresponding portion 48 and the joints 56b and 58b between the outer lips 28 and 44 and the outer lip corresponding portion 50 Is formed in the same manner as in the first embodiment described above, except that the position of the joint portion 56a at the base end 48b of the vehicle interior lip corresponding portion 48 and the position of the joint portion 56b at the proximal end 50b of the vehicle outside lip corresponding portion 50. Is offset along the longitudinal direction of the horizontal portion 10 of the glass run, and the base 4
The position at 8 b and the position at the base end 50 b of the outer lip corresponding portion 50 of the joint 58 b are offset along the longitudinal direction of the glass run vertical portion 12.

In each of the above-described embodiments, the joint between the inner lip 26, 42 and the inner lip corresponding portion 48 is at least the base end 48b of the inner lip corresponding portion 48.
At the joint between the outer lip 28, 44 and the outer lip corresponding portion 50, the bending of at least the base end 50b of the outer lip corresponding portion 50 is completed on the extruded portion side of the position where the bending of the outer lip is completed. What is necessary is just to be formed so as to pass through the extruded part side from the position, for example, each joint,
The lip corresponding portions 48 and 50 may be formed so as to pass through the positions where the base ends 48b and 50b of the lip corresponding portions 48 and 50 have finished bending.

If the size of the inside lip and the outside lip are different due to the flash surface of the vehicle and the amount of deflection of each lip is relatively large, the lip having the larger amount of deflection is used. And only the joint portion with the lip corresponding portion corresponding to the lip having the larger deflection amount may be formed so as to be inclined at a predetermined angle with respect to the longitudinal direction of the extruded portion.

[0053]

According to the present invention, the tensile stress generated by the bending and deformation of the seal lip corresponding portion does not directly act in the vertical direction of the joint between the seal lip and the seal lip corresponding portion. Cuts can be prevented.

By forming the joint portion so as to be inclined with respect to a plane perpendicular to the longitudinal direction of the extruded portion, the area of the joint portion is increased, and the vertical stress of the joint portion acting per unit area of the joint portion is increased. Is relatively reduced, so that breakage at the joint can be prevented.

According to the present invention, the peripheral length of the seal lip corresponding portion on the distal end side is longer than the peripheral length of the seal lip corresponding portion on the base end side. Since the elongation percentage on the tip side of the part becomes relatively small, the tensile stress generated at the joint becomes small,
It is possible to more effectively prevent the joint from being cut. Further, the molding range on the base end side of the seal lip, which is easily visible in a state where the sealing lip is attached to the door sash portion, is reduced, so that the appearance can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a glass run corner joining structure according to the present invention.

FIG. 2 is a side view of a door.

FIG. 3 is an explanatory diagram showing a tensile stress acting on a joint between a vehicle interior lip and a vehicle interior lip corresponding portion of a horizontal portion of a glass run.

FIG. 4 is an explanatory view showing a corner joint structure of a glass run of a second embodiment according to the present invention.

FIG. 5 is an explanatory view showing a conventional glass run corner joining structure.

[Explanation of symbols]

 2 ... Glass run 10 ... Glass run horizontal part 12 ... Glass run vertical part 14 ... Corner forming part 26 ... Car interior lip 28 ... Car interior lip 44 ... Car exterior lip 48 ... Car interior lip corresponding part 50 ... Car exterior lip Corresponding part 52 ... joint part 54 ... joint part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E036 BA07 CA01 DA03 EA02 EA09 EB02 EC03 GA03 HA03 HB08 3D127 AA03 AA11 AA18 BB01 CB05 CC05 CC13 DE09 DE12 DE18 DE32 DE38 EE16 GG08 GG09

Claims (2)

[Claims] 1. A glass run provided along a door sash portion of an automobile, and extruded into a mold-formed corner forming portion provided at a portion corresponding to a corner portion of the door sash portion. And a glass run corner joining structure in which substantially linear extruded portions are integrally connected, wherein the extruded portions are bent and deformed as free ends when the window glass comes in contact with the window glass. A seal lip for slidably sealing an outer peripheral edge; the corner forming portion has a seal lip corresponding portion joined to the seal lip; and the seal lip corresponding portion has a tip when the window glass comes into contact with the seal lip. Is a free end, and is bent and deformed to seal the outer peripheral edge of the window glass in a slidable manner. Junction between Rurippu corresponding section, the corner portions joining structure of glass run, characterized in that it is formed such that a predetermined angle inclined to the longitudinal direction of the extruded part. 2. A joint portion between the seal lip and the corresponding portion of the seal lip, wherein a base end of the seal lip serving as a fixed end is located relatively closer to a corner forming portion than a tip end of the seal lip. The corner joint structure for a glass run according to claim 1, wherein: