JP2500706B2 - Car door glass run - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door glass run mounted on a sliding portion between a window frame of a door and a window glass, and more particularly to an upper extruded body and a lower portion located above and below a door belt line. The present invention relates to a technique for improving a connection structure of an extruded body.

[0002]

2. Description of the Related Art FIG. 2 is a front view of a front door of an automobile showing a mounted state of a door glass run, FIG. 3 is an enlarged front view of the entire door glass run of FIG. 2, and FIG. It is the sectional view on the AA line of FIG. 3 which shows the connection structure with a lower extrusion body. In FIG. 2, 1 is a window frame of a front door, 2 is a window glass, 3 is a bracket for a door mirror attached to the front part of the window frame 1, 4 is a sliding portion between the window frame 1 and the window glass 2. Door glass run, and D indicates a door belt line.

As shown in FIG. 3, the door glass run 4 includes a first extruded body 5 which obliquely descends forward from a roof portion,
A second extruding body 6 extending downward from the front lower end of the first extruding body 5 across the door belt line D and a third extruding body 5 extending from the rear end of the first extruding body 5 to a position near the lower side of the door belt line D.
It is composed of an extruded body 7 and a fourth extruded body 8 which extends further downward from the lower end of the third extruded body 7. Each of the extruded bodies 5 to 8 is formed by cutting an extruded product made of EPDM solid rubber (ethylene / propylene / diene copolymer) or PVC (polyvinyl chloride) material into a predetermined length, and butt ends thereof. The parts are set in the mold 9, the cavity is filled with the same material as described above, and the connection part 10 is provided, whereby the parts are mold-connected to each other. Regarding the method of this type connection, JP-A-2-48227 and JP-A-2-48227
No. 228 gazette. The first extruded body 5 and the third extruded body 7 constitute an upper extruded body that slides and guides the window glass 2 above the door belt line D, and the second extruded body 6 and the fourth extruded body 8 are Below the door belt line D, a lower extruded body for slidingly guiding the window glass 2 is configured.

The third extruded body 7 as the upper extruded body is shown in FIG.
As shown in FIG. 1, a trim portion 11 having a substantially U-shaped cross section attached to the window frame 1 and a guide portion 12 having a substantially U-shaped cross section for slidingly guiding the windshield 2 are integrally provided. A reinforcing insert 13 is embedded in the trim portion 11, and the guide portion 12 has a window glass 2 and a vehicle exterior 1.
The upper guide piece 15 and the windshield 2 which are in sliding contact with each other from the 4 side
And an upper seal lip 17 that is in sliding contact with the inside of the vehicle 16 side. On the other hand, the fourth extruded body 8 as the lower extruded body has a guide portion 18 having substantially the same cross section as the guide portion 12.
The guide portion 18 includes a lower guide piece 19
And the lower seal lip 20 are provided, and the lower guide piece 1
9 is attached to the inside of the door via an attachment member 21.

When the third extruded body 7 and the fourth extruded body 8 are connected to each other by a die, a connecting portion 10 is formed between the abutting end portions by the die 9. A locking groove 22 that opens downward is formed in the connecting portion 10, and the locking groove 22 is fitted into a locking piece 23 provided inside the door, so that the connecting portion 1
0 is assembled at a predetermined position near the lower side of the door belt line D, and the vertical positions of the third extrusion body 7 and the fourth extrusion body 8 are determined. Further, at the time of mold connection, the upper seal lip 17 of the third extruding body 7 and the lower seal lip 20 of the fourth extruding body 8 are crushed by the die 9 and mold-bonded to the connecting portion 10. By doing so, the end portions of the upper and lower seal lips 17, 20 can be restrained to smoothly move up and down the window glass 2, and the strength of the connecting portion 10 can be increased to improve the durability.

[0006]

However, the conventional third
According to the connection structure of the extruded body 7 and the fourth extruded body 8, when the upper seal lip 17 is crushed, the deformed portion thereof extends to the upper side of the door belt line D, and the gap 24 is formed inside the window glass 2. For this reason, there is a problem that the sealing property of the upper portion of the door belt line D is deteriorated, and the wind is entrained here during traveling to generate a wind noise. Since the vertical position of the connecting portion 10 is predetermined by the locking piece 23 based on the specifications of the door, the assembling position of the connecting portion 10 is changed to position the gap 24 below the door belt line D. Therefore, the manufacturing process of the door glass run 4, in particular the third extruding body 7 and the fourth
It was necessary to eliminate such a defect by improving the structure of the mold connection of the extruded body 8.

[0007] Therefore, an object of the present invention is to provide a door glass run for an automobile, in which the sealing property in the upper portion of the door belt line is improved to prevent generation of wind noise and intrusion of rainwater, noise, dust and the like. To do.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to an upper extruding body for slidingly guiding a window glass above a door belt line, and a sliding window glass below a door belt line. In a door glass run for an automobile, which is die-connected to a lower extruding body for dynamic guiding, and the connecting portion is arranged at a predetermined position near the lower side of the door belt line,
The upper extruded body is provided with a trim lip attached to the window frame and a seal lip that is in sliding contact with the windshield, and the lower end of the trim lip is cut off to form a protrusion on the lower end of the seal lip, and the connecting portion is stepped during mold connection. It is characterized in that the protrusion is crushed and adhered to the stepped portion and the crushed portion is located below the door belt line.

[0009]

According to the vehicle door glass run of the present invention,
Since the connecting portion between the upper extruding body and the lower extruding body is formed in a stepped shape, the projecting portion provided on the seal lip of the upper extruding body is crushed at a position separated downward from the door belt line and the connecting step is stepped. It is glued to the attachment. Therefore, the deformed portion of the upper seal lip by the mold is formed at a lower position as compared with the conventional case, the deformation is converged at the position of the door belt line, and the upper seal lip is restored to the extruded shape. Therefore, there is no gap inside the window glass on the upper side of the door belt line, and the sealing property of this part is improved,
Generation of wind noise and intrusion of rainwater, noise, dust, etc. are prevented.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a connection structure between an upper extruded body and a lower extruded body of an automobile door glass run according to an embodiment of the present invention, taken along line AA of FIG. In the door glass run 4 of this embodiment, only the connection structure of the third extruded body 7 as the upper extruded body and the fourth extruded body 8 as the lower extruded body is different from the conventional structure. Since other parts are the same as the conventional ones, the same reference numerals as those in FIG. 4 are given to FIG. 1 and the description thereof is omitted.

The lower end of the trim portion 11 in the third extruded body 7 including the insert 13 is cut out to a predetermined size, and a cutout portion 26 is formed therein. By forming the cutout portion 26, the guide portion 12 projects downward from the trim portion 11, and the projection portion 27 is formed at the lower end of the upper seal lip 17. When connecting the molds, a connecting portion 28 is formed between the abutting end portions of the third extruding body 7 and the fourth extruding body 8 in a substantially L-shaped stepped shape according to the shape of the die 9, and the connecting portion 28 is formed. The projecting portion 27 is molded and adhered to the stepped portion 29 while being crushed by the mold 9. In this embodiment, the door belt line D to the connecting portion 2
The distance L1 to the upper edge of 8 is set to about 5 mm, and the height L2 of the stepped portion 29 is set to about 13 mm.

According to the connecting structure of the third extruding body 7 and the fourth extruding body 8 of this embodiment, since the connecting portion 28 is formed in a stepped shape, the protruding portion of the upper seal lip 17 is connected at the time of die connection. 27 is crushed at a position separated downward from the door belt line D and is mold-bonded to the stepped portion 29 of the connecting portion 28. Therefore, the deformed portion of the upper seal lip 17 by the mold 9 is formed at a lower position as compared with the conventional case, and
As shown in, the deformation converges at the position of the door belt line D, and the upper seal lip 17 is restored to the extruded shape. Therefore, no gap is formed inside the window glass 2 on the upper side of the door belt line D, the sealing property of this portion is improved, and the generation of wind noise and the intrusion of rainwater, noise, dust and the like can be prevented. Further, since the connecting portion 28 has only changed its shape and the assembly position has not changed, it is not necessary to change the specifications of the door body, and the sealing property of the door belt line D portion can be easily changed by simply modifying the door glass run 4. Can be improved.

In the above embodiment, the present invention is applied to the connection structure at the rear portion of the front door, but the present invention is not limited to this portion, and the configuration of the above embodiment can be applied to the front portion of the front door, Alternatively, it may be applied to the connecting structure of the upper extruding body and the lower extruding body in the front part or the rear part of the rear door. In addition, the shapes and configurations of the respective parts may be appropriately modified and embodied without departing from the spirit of the present invention.

[0014]

As described above in detail, according to the present invention, the connecting portion is formed in a stepped shape, and the protruding portion of the upper seal lip is crushed and bonded to the stepped portion. On the upper side, there is no gap inside the wind glass, improving the sealing performance of this part and generating wind noise,
Further, it has an excellent effect that rainwater, noise, dust and the like can be prevented from entering.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along the line AA of FIG. 3 showing a connection structure between an upper extruded body and a lower extruded body in an automobile door glass run according to an embodiment of the present invention.

FIG. 2 is a front view of a front door of an automobile showing a mounted state of a door glass run.

3 is an enlarged front view showing the entire door glass run of FIG. 2. FIG.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 showing a connection structure between an upper extrusion body and a lower extrusion body in a conventional automobile door glass run.

[Explanation of symbols]

1 Window Frame 2 Wind Glass 4 Door Glass Run 9 Mold 7 Third Extruder as Upper Extruder 8 Fourth Extruder as Lower Extruder 11 Trim 17 Upper Seal Lip 26 Notch 27 Protrusion 28 Connection 29 Stepped part D Door belt line

Claims (1)

(57) [Claims] 1. An upper extruding body for slidingly guiding a window glass above a door belt line and a lower extruding body for slidingly guiding a wind glass under a door belt line are die-connected, and the connecting portion is a door. In a car door glass run arranged at a predetermined position near the lower side of the belt line,
The upper extruded body is provided with a trim portion attached to a window frame and a seal lip that is in sliding contact with a window glass, and a lower end portion of the trim portion is cut off to form a protruding portion at a lower portion of the seal lip. At this time, the connecting portion is formed in a stepped shape, the projecting portion is crushed and adhered to the stepped portion, and the crushed portion is located below the door belt line. Door glass run.