JP2546649B2 - Manufacturing method of window molding for automobile - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a window molding for an automobile.

2. Description of the Related Art Generally, in an automobile, as shown in FIGS. 8 and 9, a window molding M is fitted and fixed in a gap between a roof panel R and a pillar panel P on a vehicle body panel side along an edge of a windshield G _1. Is being done.

Conventionally, a window molding of this type is formed such that an upper member 1a along a roof panel R shown in FIG. 10 and a side member 1b along a pillar panel P shown in FIG. 11 are continuous and have the same cross-sectional shape. It is usually done.

Further, the strip-shaped decorative members 2a and 2b of the same width such as metallic luster color are attached to the surface over the entire length thereof, and the upper member 1a
The corner member 1c extending from the side member 1b to the side member 1b is
As shown in the figure, a corner metal fitting 3 made of stainless steel or the like that holds a substantially right-angled shape is mounted.

By the way, in this window molding, in order to prevent rainwater, which is wiped off to the side with a wiper, from moving to the side window G _{2 due} to wind pressure, along the side edge of the side member 1b, between the outer surface of the windshield G ₁ It is desired to provide a concave groove for forming a space in the side wall to receive rainwater wiped by a wiper and prevent the rainwater from flowing laterally to the side window G ₂ side.

The window molding has a narrow groove near the corner to allow rainwater received by the concave groove at the side part to flow downward, and a concave groove is formed so that it gradually widens as it goes downward of the side member 1b. Good to do. However, when forming the concave groove, the cross-sectional shape of the molding body should be at least the upper member 1a and the side member 1b.
It is necessary to make them different from each other, and it is necessary to form both of them and the corner portion 1c into different shapes.

However, it is difficult to continuously form the window molding by simple ordinary extrusion molding.

SUMMARY OF THE INVENTION The present invention provides a method for manufacturing a window molding for an automobile, which is devised so that even window moldings having different sectional shapes from the upper member along the axial direction of the side member can be easily manufactured. With the goal.

Means for Solving the Problems In a method for manufacturing an automobile window molding according to the present invention, a vehicle is attached along an outer peripheral edge of a windshield so as to cover a gap between an outer peripheral edge of the windshield of the vehicle and a vehicle body panel. A method of manufacturing window moldings, which when mounted along a side edge of a windshield forms a space for receiving rainwater between the outer surface of the windshield and the rainwater flowing across the molding at the side portion. The long side member extruded and molded in the substantially same cross-sectional shape so as to have a concave groove for preventing the cross section has a different cross-sectional shape from the side member, and has substantially the same cross section so as not to have the concave groove. With a long upper member that is resin extruded into a surface shape and attached along the upper edge of the windshield Between the ends of both members by arranging the upper end of the side member and the side end of the upper member in the injection molding die so that both members intersect in a substantially L shape and injecting synthetic resin. The cross-sectional shape of the side member gradually changes from the cross-sectional shape of the upper member to the cross-sectional shape of the upper member, and the outer surfaces of both members smoothly and continuously adhere to the ends of both members without any step, and A corner member is injection-molded into a substantially L shape so as to form a concave groove which is continuous from the concave groove and is tapered toward the upper member side, and the upper member and the side member are connected by this corner member so as to be substantially L-shaped. It is integrated.

Action In this method for manufacturing a window molding for an automobile, a side member forms a space capable of receiving rainwater between the windshield and the outer surface of the window glass when the windshield is attached to the concave shape that prevents the rainwater from flowing across. A side member having a groove and a cross-sectional shape different from that of the side member, and an upper member not having the concave groove, from the cross-sectional shape of the side member between the ends of each member from the cross-sectional shape of the upper member Gradually change, the outer surfaces of both members smoothly and continuously adhere to the ends of both members without a step at the end, and form a concave groove continuous from the concave groove of the side member and tapering toward the upper member side. As described above, since the corner members are injection-molded into a substantially L shape, the upper member and the side member are connected and integrated. The ends of both the side member and the upper member, which have different cross-sectional shapes, can be connected to each other by the corner members without any gaps, and the molding can be easily and integrally continuous and accurately formed into a desired shape. Further, since rainwater wiped off by the wiper can be received not only by the concave groove of the side member but also by the concave groove of the corner member, the rainwater can be absorbed by the side member and the corner member of the molding in a wider range than only the concave groove of the side member. It is possible to easily manufacture a window molding capable of preventing the side window from flowing across the outer surface. Furthermore, since the upper member and the side member are connected by a corner member formed by injection molding without a gap, it is presumed that the air flow through the gap is eliminated and the wind noise is also reduced.

Example The following is a description with reference to FIGS. 1 to 7.

The window molding of this embodiment has a roof panel R along the edge of the windshield G ₁ as shown in FIG.
It is formed as a front window molding that is fitted and fixed in the gap between the pillar panel P and the pillar panel P. Also,
This front window molding is divided into a long upper member 10a, a long side member 10b, and a corner member 10c. As will be described later, the side member 10b and the corner member 10c can receive and discharge rainwater wiped by a wiper. A concave groove 12 having a different space is provided, and each groove is formed to have a different sectional shape.

As shown in FIG. 2, the cross-sectional shape of the upper member 10a is substantially the same as the engaging portion formed of the lip portions 11a and 11b for sandwiching the edge of the windshield G ₁ from both front and back sides and the side surface in contact with the roof panel R. It is formed in an elongated shape having the same cross-sectional shape, and as will be understood from the figure, a concave groove 12 described later is not formed. On the other hand, the side member 10
As shown in FIG. 3, b is a lip portion 11c that holds the edge of the windshield G ₁ from both the front and back sides, similar to the upper member 10a.
Since the recessed groove 12 which forms a space capable of receiving rainwater is provided between the locking portion composed of 11d and 11d and the outer surface of the windshield G ₁ , the cross-sectional shape and function are different from those of the upper member 10a. The side member itself is formed in a long shape having substantially the same cross-sectional shape over the entire length. The corner member 10c has a cross-sectional shape that gradually changes from the cross-sectional shape of the side member 10b to the cross-sectional shape of the upper member 10a, and the concave groove 12 that is continuous from the side member 10b.
Is injection-molded into a substantially L-shape so that it is tapered toward the upper member 10a side and disappears on the way.

Moreover, although the side members 10b and the upper member 10a have different cross-sectional shapes from each other, as shown in FIG.
The ends of a and 10b are in close contact with the corner member 10c, and the outer surfaces of the ends of the members 10b and 10a are smoothly and continuously connected to the corner member 10c and the outer surface.

In order to manufacture this front window molding, as shown in FIG. 6, an upper member 10a having a sectional shape without the concave groove 12 and a side member having a sectional shape having the concave groove 12 are formed.
10b is individually molded into the lengths of the portions l ₁ and l ₂ having substantially the same cross-sectional shape. The upper member 10a and the side member 10b are formed into elongated members having different shapes and substantially the same cross section by applying resin extrusion molding.

Next, a corner member 10c that gradually changes its shape is connected and molded between the respective ends of the upper member 10a and the side member 10b, and the corner member 10c is continuously formed from the concave groove 12 of the side member 10b. A concave groove 12 that is tapered toward the 10a side and disappears midway is formed. In order to form the corner member 10c, the ends of the upper member 10a and the side member 10b are arranged in an injection molding die so that the axes of both members intersect in a substantially L shape, and a liquid resin is injected. Apply insert injection molding. In the injection molding of this liquid resin, not only can the liquid resin flow in the mold and be accurately molded into the shape of the substantially L-shaped bent portion of the corner member 10c, but also the cross-sectional shape gradually changes and the side member The corner member 10c can be formed such that it has a concave groove 12 continuous from 10b and the concave groove 12 is tapered and disappears in the middle. Further, by injection molding the corner member 10c, the fluidized resin comes into close contact with both ends of the upper member 10a and the side member 10b as shown in FIG. 4, so that the three members 10a, 10b, 10c are joined together. It can be easily manufactured as a window molding that is continuously integrated with no gaps.

As shown in FIG. 4, a metal vapor deposition film, others and a colored film, or a strip-shaped decorative portion 13a, 13b, 13c formed of a metal plate or metal foil is connected to the outer surface of each member 10a, 10b, 10c. It can be formed by being attached to the. Among the decorative portions, those 13a and 13b provided on the surfaces of the upper member 10a and the side member 10b are the upper member 10a and the side member 10b.
Are similarly formed to have substantially the same width up to the portions having substantially the same cross-sectional shape. Further, as shown in FIG. 5, the outer surface of the corner member 10c gradually changes from the upper lateral width to the side lateral width (W ₁ <W ₂ ) as the lateral width of the corner member 10c changes. Is changed to form a substantially L-shaped decorative portion 13c by adhesion.

To form the decorative portion, the upper member 10a as shown in FIG. 6, when In the side members 10b formed into each individual to each cross-sectional shape is substantially the same parts l _1, l _2, above extrusion By applying molding, the strip-shaped decorative members having the same width are drawn out and attached to the respective surfaces, so that the decorative members 13a and 13b can be formed simultaneously with the extrusion molding of the upper member 10a and the side member 10b.

Further, in the corner member 10c, the upper member 10a,
After the side member 10b is connected and integrated by injection molding, the decoration member is attached to the outer surface of the corner member 10c to form the decoration portion 13c.
For the adhering molding, as shown in FIG. 7, as the decorative member 13, one having the same color as the decorative members 13a, 13b of the upper member 10a and the side member 10b was used, and the corner member 10c and the molded resin were mixed with each other. It is preferable to use the resin 14 having the solubility attached to the back surface. The decorative member 13 is formed in advance in a substantially L-shaped predetermined shape, and is pressed and heated on the outer surface of the corner member 10c.
By pressing with 5 and welding to the outer surface of the corner member 10c, it is possible to form the strip-shaped decorative portion 13c. Further, the decorative member 13 can be formed as the predetermined decorative portion 13c by fusing and welding to the desired shape by the pressing and heating mold 15 without using the decorative member 13 in advance.

EFFECTS OF THE INVENTION As described above, according to the method for manufacturing an automobile window molding according to the present invention, a space that can receive rainwater is formed between the windshield and the glass surface when the windshield is attached along the side edge of the windshield. And a long side member having a substantially same cross-sectional shape having a concave groove, and a side member having a different cross-sectional shape from the side member and having a substantially same cross-sectional shape without the concave groove. The upper member having a length is gradually changed from the cross-sectional shape of the side member to the cross-sectional shape of the upper portion, and a corner member is formed in a substantially L shape so as to form a continuous groove from the concave groove of the side member. A window molding for automobiles that can prevent lateral flow of rainwater in a wide range by injection molding and connecting and integrating upper and side members with this corner member. The ring can be accurately and easily manufactured into a desired shape. Further, even if the width of the decorative portion attached to the surface thereof is gradually different, it can be easily manufactured, and the whole can be accurately formed into a desired shape. In addition, the upper,
It is presumed that both side member ends and the corner members can be intimately contacted with each other at the outer surfaces thereof to prevent intrusion of dust, water, and the like from the joint portion, and reduce wind noise.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an automobile window molding manufactured by the method according to the present invention in an attached state, FIG. 2 is a cross-sectional view showing an upper member of the molding, and FIG. 3 is a side member of the molding. Cross section showing,
FIG. 4 is a sectional view showing a corner portion cut along the axial direction of the molding, FIG. 5 is a plan view showing a strip-shaped decorative portion attached to a corner member of the molding, and FIG. 6 is the molding. 7A to 7C are explanatory views showing a forming process of the strip-shaped decorative portion to be attached to the corner member, and FIG. 8 shows a mounting portion in the vehicle body of the window molding according to the general example. FIG. 9 is a partial perspective view showing a window molding manufactured by a method according to a conventional example in an attached state, FIG.
The figure is a cross-sectional view showing the upper member of the molding,
FIG. 11 is a cross-sectional view showing a side member of the molding, and FIG. 12 is a cross-sectional view cut along the axial direction of the molding. 10a: upper member, 10b: side member, 10c: corner members, 12: concave groove, 13a, 13b, 13c: frieze section, 13: a substantially L-shaped frieze member, l _1, l _2: Upper member, Part where the cross-sectional shape of the side member and the width of the strip-shaped decorative portion are substantially the same, W ₁ , W ₂ :
Width of the band-shaped decorative part, G ₁ : Windshield, R, P: Body panel.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-264238 (JP, A) JP-A-61-135824 (JP, A)

Claims (3)

(57) [Claims] 1. A method for manufacturing a window molding for an automobile, which is mounted along an outer peripheral edge of a windshield so as to cover a gap between an outer peripheral edge of the windshield of the automobile and a vehicle body panel, the method comprising a side edge of the windshield. When installed in place, the resin has approximately the same cross-sectional shape to form a space that can receive rainwater with the outer surface of the glass and has concave grooves that prevent rainwater from flowing across the molding at the side portions. The long side member extruded and the side member have different cross-sectional shapes, and are resin-extruded into substantially the same cross-sectional shape so as not to have the concave groove, and along the upper edge of the windshield. The long upper member that can be attached to the upper side end of the side member and the side end of the upper member are both L-shaped. By arranging them in the injection molding die so that they are different from each other and injecting the synthetic resin, the cross sectional shape gradually changes from the cross sectional shape of the side member to the cross sectional shape of the upper member between the ends of both members. The outer surfaces of both members smoothly and continuously adhere to the ends of both members without a step at the end, and form a substantially L-shape so as to form a concave groove that is continuous from the concave groove of the side member and tapers toward the upper member side. A method for manufacturing a front window molding for an automobile, characterized in that a corner member is injection-molded to the above, and the upper member and the side member are connected and integrated by the corner member so as to form a substantially L shape. 2. The front side for an automobile according to claim 1, wherein both the side member and the upper member are integrally formed with a locking portion for locking the outer peripheral edge of the windshield along the longitudinal direction. Manufacturing method of window modding. 3. A strip-shaped decorative portion having a constant width and a different color from the colors of the outer surfaces of the side member and the upper member is formed on the outer surfaces of the side member and the upper member, respectively, and the outer surface of the corner member has the above-mentioned structure. A strip-shaped decorative member having the same color as that of the decorative member and having a substantially L-shape that gradually changes from the width of the decorative member of the side member to the width of the decorative member of the upper member is applied to the decorative member of the upper member and the side member. The method for manufacturing a front window molding for an automobile according to claim 1, wherein the decorative portion is connected by a corner member.