JP3112421B2 - Molding method of 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 weatherstrip type which is attached to a door sash by engaging an insert member embedded in a weatherstrip for sealing a gap between a door sash and a vehicle body with a T-stud member. It relates to a molding method.

[0002]

2. Description of the Related Art As shown in FIG. 2 to FIG. 6, at the peripheral edges of door sashes 3 and 4 of a front door 1 and a rear door 2 of a vehicle, a weather seals a gap between the door sashes 3 and 4 and a vehicle body. Strips 5, 6 are attached.

The weatherstrip 5 has a mounting base 5a mounted on the door sash 3 and a hollow seal 5b and a lip 5 formed integrally therewith and elastically contacting the periphery of the opening of the vehicle body.
c, and the extruded linear portions C, C are connected to the molded corner portion B. Also,
A locking member 8 is formed integrally with the molded portion B of the weather strip 5 to serve as a function for preventing the weather strip 5 from shifting and a fastener function for the T stud member 7 to which the leg 7a is welded vertically to the door sash 3. The inserted insert member 9 is embedded.

The locking member 8 is formed in a substantially cylindrical shape, the weather strip 5 is positioned so that the T stud member 7 is inserted inside the substantially cylindrical portion, and the locking claw 8a of the locking member 8 is The weather strip 5 is positioned and attached to the door sash 3 by being locked to the head 7 b of the T stud member 7. The locking member 8 is provided with notches 8b, 8b. When the weather strip 5 is attached, the locking claw 8a comes into contact with the head 7b of the T stud member 7 so that the locking claw 8a slightly spreads outward. The insertion of the stud member 7 into the interior is facilitated.
Note that the weather strip 6 has the same configuration as the weather strip 5, and a description thereof will be omitted.

[0005]

The material of the insert member 9 and the locking member 8 integrally formed therewith is resin,
The ratio of the amount of glass fiber contained therein is 40%, but this is reduced to 30% or less to enhance the insertability into the T stud member 7. However, the ratio of the amount of the glass fiber is reduced from 40% to 30% or less, and the insert member 9 with the locking member 8 is fixed between the upper mold 21 and the lower mold 22 as shown in FIG. When the weather strip 5 is molded by injecting a rubber material between the side molds 21 and 22, there is a problem that the locking claw 8a is thermally deformed outward as shown by a broken line in FIG. Therefore, the force for holding and holding the T stud member 7 with the locking claw 8a is reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for forming a weatherstrip which improves the insertability of a T-stud without lowering the holding force.

[0007]

In order to achieve the above object, a method for forming a weatherstrip according to the present invention is directed to a weatherstrip (5) in which a seal portion (5b) elastically contacting the periphery of an opening of a vehicle body is integrally formed. )) A locking claw (8a) formed on an insert member (9) embedded in a corner portion
Is attached to the door sash (3) by locking the head to the head (7b) of the T-stud member (7) to which the leg (7a) is fixed perpendicularly to the door sash (3). In the molding method of (1), the locking claw (8a) is sandwiched between the lower mold (12) provided with a projection (13) contacting the outside of the locking claw (8a) and the projection (13). The insert member (9) is fixed between the upper mold (11) and the lower mold (12) so that the rubber material is injected between the upper mold (11, 12) and molded. (Claim 1). Also, the weatherst of the present invention
The molding method of the lip is a
Weatherstrip with integrated part (5b)
Insert member embedded in the corner of (5) (9)
A substantially cylindrical locking claw (8a) formed on the door sash
T-stud with legs (7a) fixed vertically to the menu (3)
By locking the head (7b) of the member (7),
Weatherstrip attached to Asash (3)
In the molding method of (5), the lower mold (12) is locked.
Protrusions (13) are provided where they touch the outside of the claws (8a).
The locking claw (8a) is in contact with the projection (13).
The upper and lower dies (11, 12)
And the lower mold (12).
2).

The symbols in parentheses described in the means for solving the above-mentioned problems correspond to the symbols described in the drawings and the embodiments of the invention described later.

According to the present invention, a projection is provided on the lower mold, and the projection and the lower mold are engaged with each other so that the projection contacts the outer side of the locking claw during molding. The insert member is fixed by sandwiching the pawl. Thereafter, a rubber material is injected between the upper and lower molds to perform molding. As described above, since the locking claws of the locking member are firmly held at the time of molding, even if the content of glass fiber contained in the resin material is reduced from, for example, 40% to 30% or less, it is thermally deformed. Never.

[0010]

Embodiments of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. FIG. 4 is an enlarged cross-sectional view illustrating a method of molding the weather strip 5 according to the embodiment of the present invention, in which the weather strip 5 is set in upper and lower dies 11 and 12 and a rubber material is injected.

A weatherstrip 5 according to an embodiment of the present invention has a mounting base 5a mounted on the door sash 3 and a hollow seal portion formed integrally with the mounting base 5a and elastically contacting the periphery of the opening of the vehicle body as in the conventional example. 5b and a lip portion 5c integrally formed with the mounting base portion 5a. A plate-shaped insert member 9 serving as a function of preventing the weather strip 5 from shifting and a fastener function of the T stud member 7 is embedded in the molded portion. I have. Insert member 9
A substantially cylindrical locking member 8 having a locking claw 8a is formed so as to protrude toward the door sash 3 when the weather strip 5 is mounted. The weather strip 5 is positioned so as to insert the T stud member 7 to which the leg portion 7a is fixed by welding vertically to the door sash 3 inside the substantially cylindrical portion, and the locking claw 8a of the locking member 8 is set. The weather strip 5 is positioned and attached to the door sash 3 by being locked to the head 7 b of the T stud member 7.

Next, a method of forming the weather strip 5 will be described. First, the insert member 9 on which the locking member 8 is formed is set between the upper mold 11 and the lower mold 12. Here, a projection 13 is provided on the lower mold 12, and in the above-described setting, the projection 13 is
a, and projecting portion 13 and lower mold 1
2 and the insert claw 8a sandwiching the locking claw 8a.
Is fixed. Then, a rubber material is injected between the upper and lower molds 11 and 12 to perform molding.

As described above, since the locking claws 8a of the locking member 8 are clamped during the molding, even if the content of glass fibers contained in the resin material is reduced from 40% to 30% or less. There is no thermal deformation. Therefore, the force for holding the head 7b of the T-stud member 7 with the locking claw 8a and holding the T-stud member 7 is maintained and does not particularly decrease. In addition, since the content of the glass fiber of the resin can be reduced to 30% or less, the insertability into the T stud member 7 is improved.

[0014]

As described above, according to the present invention, since the locking claws of the locking member are firmly clamped at the time of molding, the content of the glass fiber contained in the resin material is, for example, 40%.
Even if it is reduced to 30% or less, there is no thermal deformation.
Therefore, the force for holding the head of the T stud member with the locking claw to hold the T stud member is maintained and does not decrease particularly. In addition, the glass fiber content of the resin is 3
Since it can be reduced to 0%, the insertability to the T stud member can be improved.

[Brief description of the drawings]

FIG. 1 shows a weather strip 5 according to an embodiment of the present invention.
This shows the molding method of the weather strip 5.
Is an enlarged cross-sectional view showing a state in which the rubber material is injected into the upper and lower molds 11 and 12.

FIG. 2 is a side view showing the appearance of the vehicle.

FIG. 3 is an enlarged perspective view showing a part of the outer appearance of the weather strip 5 shown in FIG.

FIG. 4 is a perspective view showing a state where the weather strip 5 is attached to the door sash 3;

FIG. 5 is a sectional view taken along line AA of FIG. 4;

6 is a plan view showing a locking member 8 formed on an insert member 9. FIG.

FIG. 7 is an enlarged cross-sectional view showing a method of molding a weather strip 5 according to a conventional example, in which the weather strip 5 is set in upper and lower dies 21, 22 and a rubber material is injected.

[Explanation of symbols]

 Reference Signs List 3 door sash 5 weather strip 5a mounting base 5b hollow seal 5c lip 7 T stud member 7a leg 7b head 8 locking member 8a locking claw 9 insert member 11 upper mold 12 lower mold 13 protrusion 21 Upper mold 22 Lower mold

────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FIB29L 31:30 (56) References JP-A-3-258520 (JP, A) JP-A-7-88882 (JP, A) JP-A-4-308714 (JP, A) JP-A-4-173216 (JP, A) JP-A-63-145012 (JP, A) JP-A-63-5914 (JP, A) JP-A-61-254318 (JP / A) JP, A) JP-A-63-57213 (JP, A) JP-A-59-78832 (JP, A) JP-A-5-138696 (JP, A) JP-A-62-53810 (JP, A) Hei 6-39875 (JP, A) Fully open 1987-199319 (JP, U) Really open 60-175616 (JP, U) Fully open 55-60324 (JP, U) Really open 1 64-55010 (JP , U) Real opening Sho 61-206421 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 45/00-45/84 B29C 33/00-33/76 B60J 10/08 B6 0R 13/06

Claims (2)

(57) [Claims] 1. A locking claw formed on an insert member embedded in a corner portion of a weather strip integrally formed with a seal portion elastically contacting a peripheral edge of an opening of a vehicle body, and a leg portion is vertically fixed to a door sash. In a method of molding a weather strip attached to a door sash by engaging with a head of a T stud member, a lower mold provided with a projection contacting the outside of the locking claw, and the projection Molding the weatherstrip by fixing the insert member between the upper mold and the lower mold so as to sandwich the locking claw, and injecting and molding a rubber material between the upper and lower molds. Method. 2. A seal portion elastically contacting the periphery of the opening of the vehicle body is integrated.
Embedded in the corner of the formed weatherstrip
The substantially cylindrical locking claw formed on the inserted insert member
T-stud member with legs fixed vertically to Asash
Attach to door sash by locking to head
In the method for forming a weather strip,
A projection is provided where the lower mold contacts the outside of the locking claw.
In the state where the locking claw is in contact with the projection,
Specially, fixing the sheet member between the upper and lower molds and the lower mold.
A method for forming a weather strip.