JPH10287128A - Window molding for automobile and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of a reed pipe sound and a rattling sound. SOLUTION: In a window molding for automobile composed by providing a leg 2 inserted between a front window glass 10 and a body opening; a channel part 5 provided to the leg 2, and engaged with the front window glass 10; and an outer lip extending from the leg 2, and closely contacting to the body opening; the outer lip is provided in two steps at the upper and the lower steps, and the lips 8 and 9 are approached gradually as going to the upper side along a side part 16 provided at the side edge of the front window glass 10, and the tip of the lower lip 9 is connected to the upper lip 8 to form a hollow 18, at an upper part 17 provided at the upper edge of the front window glass 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile window molding and a method for manufacturing the same.

[0002]

2. Description of the Related Art In an automobile shown in FIG. 8, a window molding b is mounted on the periphery of a front window glass a.
As shown in FIG. 7, for example, as shown in FIG. 7, a channel portion c is engaged with a front window glass a, and a leg portion d is embedded in an adhesive e at an opening portion of the vehicle body. Together with
It is known that an outer lip f is extended from a leg d and is closely attached to a step portion g of a vehicle body opening.

[0003] By the way, when a car runs at high speed,
A negative pressure may be generated near the boundary between the front window glass a and the roof h, and the outer lip f may be turned up. In the above-described window molding b, since the gap h is formed over the entire length below the outer lip f, when the outer lip f is turned up, air enters from the lower end into the gap h and flows toward the roof h. , Resulting in a grass flute sound.

Therefore, as shown in Japanese Patent Application Laid-Open No. 8-127232, a gap blocking wall is provided on both sides of the lower end of the window molding to prevent air from entering the gap.

[0005]

However, when such a gap blocking wall is provided, the gap blocking wall strongly interferes with the vehicle body opening, causing rust at the vehicle body opening. Further, when the outer lip f is lifted up, the outer lip f collides with the opening of the vehicle body to generate a rattling sound. However, even if the gap blocking wall is provided, the generation of the rattling noise cannot be prevented.

An object of the present invention is to provide a window molding for an automobile and a method for manufacturing the same, which can prevent the occurrence of a grass whistling sound and a rattling sound without causing such a problem.

[0007]

According to the present invention, there is provided an automobile window molding, comprising: a leg inserted between a front window glass and a vehicle body opening;
In an automobile wind molding comprising a channel portion provided on the leg portion and engaged with a windshield, and an outer lip extending from the leg portion and in close contact with a vehicle body opening portion, the outer lip is vertically These lips are arranged in a step, and these lips are gradually approached upward as they go up at the side portions arranged at the side edges of the front window glass, and at the upper portion arranged at the upper edge of the front window glass, It is characterized in that a hollow portion is formed by connecting the tip to the upper lip.

According to this configuration, the tip of the lower lip is joined to the upper lip at the upper portion, and the upper lip is supported by the lower lip. Therefore, even if a negative pressure is generated near the boundary between the front window glass and the roof during high-speed traveling, There is almost no fear that the upper lip will be turned up. Even if the upper lip is turned up, since the hollow portion between the upper and lower lip does not communicate with the atmosphere from this rolled-up portion, the air flow that causes the grass whistle sound flows into the gap portion and the hollow portion. It does not occur.

A method of manufacturing a window molding for an automobile uses a first base for forming an upper half of a leg and an upper lip, and a second base for forming a lower half of a leg and a lower lip. The molded body extruded from the base is welded and integrated, and the upper and lower lips are gradually brought closer together by extruding the molded body while relatively displacing the first and second bases. And

[0010] According to this configuration, the leg length of the wind molding gradually changes with the relative displacement of the first and second bases, so that the lower lip is gradually approached to the upper lip, and the tip is moved to the upper lip. Can be combined.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIGS. 2 and 3 show cross sections taken along lines AA and BB of FIG. 8, respectively. In the figure, reference numeral 1 denotes a window molding, and a pair of glass holding pieces 3 and 4 are extended from a leg 2 to form a channel portion 5. As shown in FIG. 3, a decorative head portion 6 is extended from the upper end of the leg portion 2, and a rainwater guiding groove 7 is formed between the decorative head portion 6 and the glass holding piece 3. Further, an upper lip 8 as an outer lip is formed from the leg 2.
And the lower lip 9 are extended to the opposite side to the channel portion 5. The inner surfaces 3a, 4a of the glass holding pieces 3, 4 and the upper surface 6a of the decorative head 6 and the upper / lower lips 8, 9 are made of soft resin, and the other parts are made of hard resin.

Then, the channel portion 5 is inserted into the peripheral edge of the front window glass 10, the window molding 1 is temporarily fixed with the double-sided tape 11, and then the leg portion 2 is embedded in the adhesive 12 at the opening of the vehicle body. It is fixed together with the front window glass 10. At this time, upper lip 8
Closely adheres to the step 13 of the vehicle body opening, and forms a drain 14 on the upper surface thereof. 15 is the adhesive 12
It is a dam rubber to block.

By the way, this wind molding 1 is shown in FIG.
As shown in FIG. 5, the height of the leg portion 2 is gradually reduced as going upward at the side portion 16 arranged on the side edge of the front window glass 10, and the upper lip 8 and the lower lip 9 are gradually approached. . In the upper portion 17 disposed on the upper edge of the front window glass 10, the tip of the lower lip 9 is connected to the upper lip 8 to form a hollow portion 18. The hollow portion 18 communicates with a gap 19 formed between the outer lip 9 and the adhesive 12 at the side portion 16. The lower lip 9
Is embedded in the adhesive 12 to increase the adhesive strength, so that the gap 19 in the side portion 16 is a hollow portion 18 in the upper portion 17 as it is.

Further, as the height of the leg 2 changes,
The decorative head portion 6 also gradually approaches the glass holding piece 3 as it goes upward at the side portion 16, and the upper portion 17
In this case, it is integrated with the glass holding piece 3. That is, the width of the rainwater guide groove 7 is gradually reduced toward the upper side at the side portion 7 and disappears at the upper portion 17. This prevents turbulence in the air flow during traveling near the boundary between the front window glass 10 and the roof 20, and prevents rainwater from flowing from the front window glass 10 to the side window glass 21 during traveling in rainy weather. doing. Note that a cord-shaped core member 20 made of glass fiber or the like is embedded in the decorative head portion 6.

The root of the upper lip 8 also becomes gradually thinner from above the side portion 16 to the upper portion 17. Thereby, the followability at the corner portion (arrow C in FIG. 1) is improved and the rigidity of the upper lip 8 at the upper portion 17 is adjusted.

In the wind molding 1 of the present embodiment, the tip of the lower lip 9 is joined to the upper lip 8 by the upper portion 17 and the upper lip 8 is supported by the lower lip 9. Even if a negative pressure is generated near the boundary between the front window glass 10 and the roof 20 during high-speed running, there is almost no possibility that the upper lip 8 is turned up, and no rattling noise is generated. Even if the upper lip 8 is turned up, since the hollow portion 18 between the upper and lower lips 8 and 9 does not communicate with the atmosphere from the turned up portion, the air flow to the gap portion 19 and the hollow portion 18 No whistling sound is produced.

Next, a method of manufacturing the wind molding 1 will be described.

FIG. 4 conceptually shows a wind molding apparatus. This manufacturing apparatus includes a first die 41 having a main extrusion opening 40 and a second die 4 having a sub extrusion opening 42.
The shielding plate 44 is slidably overlapped on the front side of the extrusion side of the first base 41. The shielding plate 44 is engaged with the rail 45 of the first base 41 and is connected to the second base 43 via a rod 46. The second base 43 slides together with the shielding plate 44 by the driving cylinder 47. That is, by displacing the second base 43 and the shielding plate 44 in a plane orthogonal to the extrusion direction, the opening shape synthesized by the main extrusion opening 40 of the first base 41 and the sub extrusion opening 42 of the second base 43 is changed. It is designed to change continuously.

The main extrusion opening 40 of the first base 41 is formed to form the upper half of the leg 2 from the decorative head section 6 to the upper lip 8, and the sub extrusion opening 42 of the second base 43.
Are the legs 2 from the glass support piece 3 to the lower lip 9
Is formed to model the lower half. 1st base 41
Are fixedly installed on a base (not shown), and a hard resin material is supplied from a supply port 48 and a soft resin material is supplied from a supply port 49. on the other hand,
The second base 43 is configured such that a hard resin material is supplied from the supply port 50 and a soft resin material is supplied from the supply port 51. A connection opening 52 is formed on the upper surface of the second base 43 so as to extend over the sub extrusion opening 42. That is, the connection opening 52 is opened from the main extrusion opening 40 to the lower surface side of the molded body that is extruded while being regulated by the shielding plate 44. Parts, the first and second bases 41, 43
The molded articles extruded from the first part are welded to each other.

In the above configuration, when manufacturing the window molding 1, the drive cylinder 47 is operated to activate the second molding.
After setting the position of the base 43 to the initial state, the first and second
Material extrusion from the bases 41 and 43 is started. Now, when the production is started from the upper part 17, the second base 43 is raised to a predetermined position so that the leg 2 is shortest as shown in FIG. In the wind molding 1 formed in this state, the tip of the lower lip 9 is
To form a hollow portion 18 and the decorative head portion 6 is integrated with the glass holding piece 3. The first
From the main extrusion opening 40 of the base 41, the core material 2 together with the resin material
0 are co-extruded.

Subsequently, when shifting from this state to the molding of the side portion 16, the drive cylinder 47 is operated to lower the second base 43 continuously to the position shown in FIG. The shape of the synthetic opening formed by 40 and the sub extrusion opening 42 is gradually changed. In this way, the leg 3 gradually becomes longer, the lower lip 9 separates from the upper lip 8, and the glass sandwiching piece 3 also separates from the decorative head 6 to form the rainwater guiding groove 7.

[0023]

According to the present invention, since the tip of the lower lip is joined to the upper lip at the upper portion and the upper lip is supported by the lower lip, a negative pressure is generated near the boundary between the front window glass and the roof during high-speed running. Also, there is almost no risk that the upper lip will be turned up,
There is no flapping sound. Even if the upper lip is turned up, since the hollow portion between the upper and lower lip does not communicate with the atmosphere from this turned up portion, an air flow is generated in the gap portion and the hollow portion, and a whistling sound is generated. It does not occur.

[Brief description of the drawings]

FIG. 1 is a diagram showing a cross-sectional change of an automobile window molding according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 8;

FIG. 3 is a sectional view taken along line BB of FIG. 8;

FIG. 4 is a diagram conceptually showing a wind molding manufacturing apparatus.

FIG. 5 is a view for explaining the operation of the manufacturing apparatus.

FIG. 6 is a diagram illustrating the operation of the manufacturing apparatus.

FIG. 7 is a diagram showing a conventional example corresponding to FIG. 1;

FIG. 8 is a perspective view showing the vicinity of a front window glass of an automobile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wind molding 2 ... Leg part 5 ... Channel part 8 ... Upper lip 9 ... Lower lip 18 ... Hollow part

Claims (2)

[Claims] 1. A leg inserted between a windshield and a vehicle body opening, a channel provided on the leg and engaged with a windshield, and a vehicle body extending from the leg. In an automotive wind molding having an outer lip that is in close contact with an opening, the outer lip is arranged in two stages, upper and lower, and these lips are moved upward at a side portion arranged on a side edge of the front window glass. Therefore, the upper part which is gradually approached and is arranged at the upper edge of the front window glass is formed with a hollow portion formed by connecting the tip of the lower lip to the upper lip. 2. The method for manufacturing a window molding for an automobile according to claim 1, wherein a first base for forming the upper half of the leg and the upper lip, and a lower half and the lower lip of the leg are formed. The second and the second bases are used, and the molded articles extruded from these bases are welded and integrated so as to be integrated.
A method for manufacturing a window molding for automobiles, wherein an upper lip and a lower lip are gradually brought closer to each other and joined by extruding a molded body while relatively displacing a second base.