JPH09109672A - Window mold for car and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make easy bending and increase rigidity of a mold by forming a resin skeleton buried in a window mold in a variable cross-sectional shape. SOLUTION: An upper mold part 1A including a corner mold part 1C is formed in a uniform cross-sectional shape. Also a side mold part 1B connected continuously to the upper mold part 1A is formed so that its cross-sectional shape is increased gradually toward the direction opposite to the upper mold part 1A. Then a resin L-section skeleton material 15 is buried only in the side mold part 1B. In addition, the skeleton material 15 is formed so that its cross- sectional shape is increased gradually toward the direction opposite to the upper mold part 1A according to a variation in the cross-sectional shape of the side mold part 1B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windshield molding for an automobile, which is mounted on a peripheral portion of a windshield of an automobile so as to conceal a gap between the peripheral portion of the windshield and a vehicle body, and a manufacturing method thereof. .

[0002]

2. Description of the Related Art As disclosed in JP-A-4-32819 and JP-A-4-287713, in a molding mounted on a peripheral portion of a windshield of an automobile, a side provided with a rainwater guide groove. Part moldings, that is, side moldings corresponding to the front pillars of the vehicle body, and upper moldings without rainwater guiding grooves, that is, upper moldings corresponding to the roof portion of the vehicle body, are integrally formed, and both It is known that in the connecting portion of the molding, that is, in the upper corner portion of the windshield, the width of the rainwater guide groove is gradually narrowed and disappears before reaching the upper molding.

The rainwater guide groove prevents rainwater adhering to the windshield from wrapping around the side of the vehicle as the vehicle travels, and guides the rainwater to smoothly flow down below the windshield. Play a role.

The above-mentioned molding is generally formed in a gap between the end face of the windshield and the vehicle body panel, and is integrally formed with this mounting leg so as to be exposed on the surface of the windshield. A wide decorative head portion is formed, and a rainwater guide groove is formed in the decorative head portion of the side molding. Therefore, in the above-mentioned side molding, the height of the decorative head portion becomes large, and in the upper molding, the height of the decorative head portion becomes relatively small, and further, the corner connecting the side molding and the upper molding. In order to smoothly connect the two, the shape of the decorative head is gradually reduced toward the upper molding side. A metal core material is embedded in the side molding in order to compensate for the rigidity associated with the increased height of the decorative head portion as described above.

In molding the molding having such a structure, for example, the above-mentioned JP-A-4-328019.
In the publication, a manufacturing method as shown in FIG. 14 is adopted.
That is, a core material 201 that has been subjected to pre-processing such as bending is continuously supplied to an extrusion opening of a die (not shown) for extrusion-molding the molding 200, and a resin material is extruded around the core material 201. When molding the molding 200 having a predetermined cross-sectional shape by extrusion, the side molding 20
In the portion corresponding to 0B, the decorative head portion 203 including the rainwater guiding groove 202 and the mounting leg portion 204 are formed into a predetermined cross-sectional shape, while in the portion corresponding to the upper molding 200A, the shape of the extrusion opening is changed at a predetermined timing. Let me
The product shape portion 205 including the decorative head portion 203 and the mounting leg portion 204 and the non-product portion area 206 unnecessary as a product are formed separately from the slit 207 in the vertical direction. Further, in the portion corresponding to the corner molding portion 200C, the side molding 200B and the upper molding 2 described above are provided.
00A is smoothly formed so that the cross-sectional area gradually decreases toward the upper molding 200A side.

With the molded body shown in FIG. 14 as it is, the core material 20 is also applied to the portion corresponding to the corner molding portion 200C.
Since 1 is buried, its corner molding part 2
00C, the mounting leg portion 204 corresponding to 00C is removed along with the core material 201 as a non-product portion region 208 along the cutting line XX, and at the same time, the non-product portion region 206 of the upper molding 200A divided from the slit 207. Also remove.

On the other hand, the mounting leg portion 20 is cut along the cutting line XX.
In the corner molding portion 200C in which 4 is cut and removed, only the decorative head portion 203 remains, so that the continuity between the side molding portion 200B and the mounting leg portion 204 of the upper molding portion 200A is impaired. Therefore, the cut-out portion of the corner molding portion 200C is injection-molded in a separate process, and the mounting leg portion is added later.

[0008]

In the conventional method for manufacturing a wind molding as described above, the sheet metal working process for bending or punching the core material 201 is synchronized with an extrusion molding line different from this. This is not preferable because the entire equipment becomes complicated and the equipment cost rises.

Further, as shown in FIG. 14, there are many portions that are once extruded and then cut and removed as non-product portion regions 206 and 208, and in addition to the waste of the core material and the resin material, As described above, the corner molding portion 200C needs to be separately injection-molded to add another member, resulting in an increase in processing man-hours and an increase in product cost.

On the other hand, a resin core material having a uniform cross-section has been used in place of the metal core material 201, but the cross-section shape in the longitudinal direction should be positively changed. When a resin core material with a uniform cross-sectional shape is used for the above-mentioned wind molding, not only the rigidity equivalent to that of the metal core material cannot be obtained especially in the part where the cross-sectional shape of the wind molding becomes large, but also the cross-sectional shape of the wind molding. Since the cross-sectional area of the core material occupies a relatively large portion in the cross-sectional shape of the smaller portion, especially when bending a small cross-sectional portion of the wind molding, for example, along the wind glass corner portion. The ability to follow corners deteriorates.

The present invention has been made by paying attention to the above problems, in which resin aggregates are used in place of conventional metal cores, and the cross-sectional shape of the aggregates is changed. While extrusion molding is performed while the extrusion molding operation of the aggregate is performed, the resin material is extruded around the aggregate just after the extrusion and the extrusion molding of the wind molding is performed while changing the cross-sectional shape of the aggregate. The present invention provides a structure of a wind molding having rigidity or strength equivalent to that of the case of using the core metal and having good corner-following property, and also provides a method capable of forming the wind molding at low cost. To aim.

[0012]

The invention according to claim 1 is a long automobile window molding that is mounted on the peripheral portion of the windshield of an automobile, and is a corner molding along the upper end corner portion of the windshield. In the upper molding portion that includes the portion and extends along the roof portion on the vehicle body side, while the molding body that includes the leg portion and the head portion that is located on the upper surface side of the windshield is formed to have a uniform cross-sectional shape, In the portion along the pillar side on the vehicle body side while continuing to the upper molding portion, the height of the head portion of the molding body gradually increases toward the side opposite to the upper molding portion, and the head portion is formed. A drip groove for collecting rainwater is formed between the windshield or the head portion itself, and only in the side molding portion,
It is characterized in that an aggregate made of a thermoplastic resin, whose cross-sectional shape changes according to a change in cross-sectional shape of the head portion of the side molding portion, is embedded.

Preferably, as in the invention described in claim 2, the molding body has a cross section of a leg portion, a head portion, and a lower glass abutment piece projecting from the lower end of the leg portion along the windshield. The lower glass abutment piece is formed in a U shape, and the protruding length of the lower glass abutment piece is smaller on the side of the upper molding portion than on the side molding portion.

More preferably, as in the invention described in claim 3, the head portion of the molding body in the side molding portion has an upper glass contact piece located on the upper surface of the wind glass and the upper glass contact piece. Is formed into a substantially U-shaped cross section by an upper head portion that is separated from the upper portion by a predetermined amount, and an intermediate leg portion that connects the upper glass abutting piece and the upper head portion. The substantially U-shaped space of the portion is used as a drip groove for collecting rainwater, while an aggregate having a substantially L-shaped cross section is embedded over the upper glass abutting piece of the head portion and the middle leg portion. The height of the portion of the aggregate along the middle leg portion gradually changes according to the change in the cross-sectional shape of the head portion of the side molding portion. .

According to a fourth aspect of the present invention, the upper head is provided on a fixed base having a fixed-side extrusion port having a shape substantially the same as the shape of the cross-sectional shape of the side molding except for the shape of the upper head. Molding in which a movable mouthpiece having a movable side extrusion port having the same shape as that of the section is slidably overlapped so as to shield a part of the fixed side extrusion port, and is pushed out from both extrusion ports while sliding the movable mouthpiece. The method for continuously extruding an automobile window molding according to claim 1, wherein the cross-sectional shape changes in the longitudinal direction by fusing and unifying the body simultaneously with extrusion. During extrusion molding, the extrusion shape of the aggregate and the shape of the molded body extruded around the aggregate are continuously changed by sliding the movable die continuously. While extruding the upper molding part, the movable side extrusion port on the movable die side is overlapped with the upper glass contacting piece corresponding part of the fixed side extrusion port to prevent extrusion of aggregate. It is characterized by being molded with.

Therefore, according to the structure of the automobile window molding of the first aspect, the window molding including the upper molding portion including the corner molding portion along the upper corner portion of the windshield and the side molding portion continuous with the upper molding portion. Of these, since the aggregate made of thermoplastic resin whose cross-sectional shape gradually changes is embedded only in the side molding portion, when the wind molding is attached to the wind glass, the wind molding is not attached to the portion other than the side molding portion. Easily bends to improve the corner-following property of the wind molding, thus improving the wearability of the wind molding. At the same time, since the cross-sectional shape of the aggregate becomes smaller in the side molding portion closer to the upper molding portion,
Similar to the above, the portion of the side molding portion closer to the upper molding portion has more flexibility. Moreover, the side moldings, whose cross-sectional shape is relatively larger than that of the upper moldings, are reinforced by the aggregate whose cross-sectional shape is gradually changed, so that the side moldings have necessary and sufficient strength and rigidity.

In this case, as in the second aspect of the present invention, the molding body is cross-sectioned by the leg portion, the head portion, and the lower glass contact piece protruding from the lower end of the leg portion along the windshield. The lower glass contact piece is formed in a substantially U shape, and the protruding length of the lower glass contact piece is smaller on the upper molding portion side than on the side molding portion. Flexibility on the part side is further improved.

Further, as in the invention described in claim 3,
An aggregate having a substantially L-shaped cross section is embedded over the upper glass abutting piece of the head portion of the molding body in the side molding portion and the middle leg portion, and a portion of the aggregate along the middle leg portion. Is formed so that the height of the aggregate gradually changes according to the change in the cross-sectional shape of the head portion of the side molding portion, so that the aggregate is substantially bent in a plane orthogonal to the longitudinal direction of the molding. Therefore, the rigidity of the aggregate itself, and hence the bending strength, are increased, and it is possible to sufficiently reinforce both the width direction and the height direction of the side molding portion having a relatively large cross-sectional shape.

On the other hand, in the invention described in claim 4, during extrusion molding of the side molding part, the extrusion cross-sectional shape of the aggregate and the molded body extruded around the aggregate by sliding the movable die continuously. The cross-sectional shape is formed while continuously changing, and on the other hand, during extrusion molding of the upper molding part, the movable side extrusion port on the movable die side is set to the upper glass contact piece corresponding part of the fixed side extrusion port on the fixed die side. By overlapping, it is molded in a state in which extrusion of the aggregate is prevented, and as a result, with the side molding part in which the sectional shape of the aggregate embedded inside the side molding part gradually changes together with the sectional shape of the side molding part itself. A wind molding having an upper molding portion having a uniform cross-sectional shape is continuously molded as one body.

Since this window molding also changes the cross-sectional shape of the aggregate according to the cross-sectional shape of the side molding portion, it is possible to obtain the wind molding having a predetermined shape only by the above-mentioned extrusion molding without performing post-processing. You can In the thus obtained wind molding, the above resin aggregate exerts the same function as that of the conventional metal core material, while the cross-sectional shape of the aggregate can be set to an arbitrary shape. The degree of freedom in shape of the aggregate is greater than that in the case where the core material made of aluminum is used.

[0021]

1 to 3 are views showing a typical embodiment of the present invention, in which a resin-made wind molding 1 mounted on a peripheral portion of a windshield 2 of an automobile has a windshield 2 thereof. Of the upper molding portion 1A having a uniform cross-section disposed along the so-called roof upper portion on the upper edge portion of the vehicle body roof, and the so-called pillar side portion on both side edges of the windshield 2 on the front pillar side as well. And a side molding portion 1B having a cross-sectional shape that gradually increases from the upper portion to the lower portion, and is formed as a continuous and integral body by using a mouthpiece unit described later. It In addition, the upper molding portion 1A has
It includes a corner molding portion 1C which is located between A and the side molding portion 1B and extends along the upper corner portion of the windshield 2. Then, as shown in FIG. 1, a lower glass contact piece 7 of the corner molding portion 1C, which will be described later, is provided.
The plurality of notches 3 are formed at a predetermined interval in order to further improve the bendability.

A molding body 4 of the upper molding section 1A
Is a pillar-shaped leg portion 5 to be inserted into a gap between the end surface of the windshield 2 and a vehicle body panel (not shown), and extends from the upper end of the leg portion 5 along the upper surface of the windshield 2. The head portion 6 also serving as the upper glass contact piece 12 and the lower glass contact piece 7 extending along the rear surface side of the windshield 2 from the lower end of the leg portion 5 have a uniform sectional shape. It is formed as a U-shape, and the peripheral edge portion of the windshield 2 is fitted in a glass fitting groove 8 formed between the head portion 6 and the lower glass contact piece 7. It is attached to the peripheral portion of the windshield 2.

Further, the leg portion 5 and the head portion 6 are integrally formed with a panel lip 9 and a holding lip 10 which project in the same direction, and the holding lip 10 bends in the gap and is not shown in the figure. On the other hand, the panel lip 9 elastically contacts the surface of the vehicle body panel and contributes to so-called flash surface formation. Further, a decorative glitter film 18 is disposed on the upper surface of the head portion 6, and a core wire 11 made of metal or glass fiber is embedded in the leg portion 5 and the head portion 6, which will be described later. In addition, it plays a role of suppressing the longitudinal extension of the wind molding 1.

The panel lip 9 and the holding lip 10
May be formed of the same material as the leg portion 5 or the head portion 6. However, particularly when the leg portion 5 and the head portion 6 are formed of hard resin, the panel lip 9
It is desirable that the holding lip 10 and the lower surface portion 6a of the head portion 6 are formed of a soft resin, and in this case also, the panel lip 9, the holding lip 10 and the lower surface portion 6a.
Can be integrally formed with the leg portion 5 and the head portion 6 by a known coextrusion molding method.

In the side molding portion 1B, the head portion 6 of the upper molding portion 1A is formed as a uniform thin wall having a height H ₁ throughout its entire length, whereas in the side molding portion 1B, the head portion 6 is formed. The height of 6 is formed as a variable cross-sectional shape that continuously and smoothly increases from the H ₁ dimension at the upper end near the corner molding 1C to the H ₂ dimension at the lower end (H ₁ <H ₂ ). They differ in points. More specifically, the molding body 4 in the side molding portion 1B
Although the shape of the lower half portion is the same as that of the upper molding portion 1A, in the head portion 6 of the side molding portion 1B, the upper head portion 13 is spaced apart from the upper glass contact piece 12 by a predetermined amount. At the same time, the upper glass contact piece 12 and the upper head portion 13 are connected to each other through the middle leg portion 14, and the cross section is formed by the upper glass contact piece 12, the upper head portion 13 and the middle leg portion 14. The head portion 6 of the molding body 4 in the side molding portion 1B has a substantially U-shape, and is smoothly continuous to the corner molding portion 1C, while the side molding portion 1C is formed smoothly.
The cross-sectional shape of the head portion 6 is gradually increased from the upper end portion to the lower end portion of B.

In the molding body 4 of the side molding portion 1B, an aggregate having a substantially L-shaped cross section made of a thermoplastic resin is straddled over the upper glass abutting piece 12 of the head portion 6 and the middle leg portion 14. 15 is embedded, and the cross-sectional shape of the aggregate 15 also gradually changes in accordance with the change in the cross-sectional shape of the head portion 6 of the side molding portion 1B. That is, the corner molding portion 1C of the molding body 4 of the side molding portion 1B
In the upper end portion close to, while the aggregate 15 is embedded only in the upper glass contact piece 12 of the head portion 6 and not in the middle leg portion 14, it is substantially plate-shaped. The aggregate 15 is embedded not only in the upper glass abutting piece 12 but also in the middle leg portion 14 as the lower molding portion of the side molding portion 1B is reached. It is formed so that it gradually increases.

As a result, in the side molding portion 1B which is arranged along the front pillar when the vehicle body is mounted, as shown in FIGS. 1 and 3, the upper glass contact piece 12 and the upper head portion 13 of the head portion 6 are provided. The U-shaped space formed by the inner leg portion 14 and the middle leg portion 14 serves as a drip groove 16 for collecting rainwater, and the drip groove 16 also changes in accordance with the change in the cross-sectional shape of the head portion 6 in the molding body 4. The space volume gradually changes, whereby rainwater adhering to the windshield 2 surface is prevented from being collected by the drip groove 16 and flowing around to the side surface of the vehicle body, and the rainwater is guided along the windshield 2 along the drip groove 16. It will flow smoothly below.

Therefore, in order to mount the wind molding 1 in this embodiment on the vehicle body, as shown in FIG. 1, both lower end portions of the side molding portion 1B and the upper molding portion 1A.
A double-sided tape 17 or an adhesive agent is provided in advance over substantially the entire length of the front glass 2, and the glass fitting groove 8 is fitted to the peripheral portion of the windshield 2 while bending the wind molding 1 according to the curvature of the peripheral portion of the windshield 2. Then, the wind molding 1 is temporarily fixed to the windshield 2.
Then, as described above, the windshield 2 with the window molding 1 attached to the peripheral portion is fitted and fixed in the windshield opening portion on the vehicle body side while also using the adhesive agent.

4 and 5 show the structure of the die unit of the extrusion molding apparatus for extrusion molding the window molding 1.

The mouthpiece unit 20 comprises a fixed mouthpiece 21 and a movable mouthpiece 22 superimposed on each other.
Is connected to an output shaft 24 of a linear actuator 23, and is slidably moved while being in close contact with the fixed base 21 while being guided by a guide rail 25 by the action of the actuator 23. And
The fixed mouthpiece 21 is formed with a fixed side extrusion opening 26, and the movable mouthpiece 22 is formed with a movable side extrusion opening 27.

The fixed-side extrusion port 26 is basically shaped such that after removing a portion corresponding to the shape of the upper head portion 13 from the maximum cross-sectional shape of the side molding portion 1B, the middle leg portion 14 is removed.
The movable-side extrusion port 27 has a shape corresponding to the shape of the upper head portion 13, while the shape-equivalent portion is extended upward.
The movable side cap 22 shields a part of the fixed side extrusion port 26 while 6 and 27 overlap each other.

As shown in FIGS. 4 and 5, the fixed base 21 has a structure in which four plate members are stacked in the direction orthogonal to the paper surface so as to share the fixed side extrusion port 26, and Among the plate materials, the soft resin material serving as the lower surface 12a (the lower surface 6a of the head portion 6) of the holding lip 10 and the upper glass abutting piece 12 is passed through the space between the first sheet and the second sheet in order from the front side and the fixed side is pushed. In addition to being pushed out to the outlet 26, the hard resin material to be the main part of the molding body 4 is pushed out to the fixed side extrusion port 26 through the second and third sheets, and the third and fourth sheets are The aggregate 15 is extruded from the aggregate extrusion port 28 that opens to the fixed-side extrusion port 26 through the space.
Further, the core wire 11 is continuously supplied from the supply port 29 opening to the fixed side extrusion port 26 through the back side of the fourth sheet.

The movable mouthpiece 22 has a structure in which five plate members are stacked in the direction orthogonal to the plane of the paper so as to share the movable side extrusion port 27, and these plate members are sequentially arranged from the front side. Through the space between the first and second sheets, the soft resin material that becomes the panel lip 9 and the lower surface portion 6a of the upper head portion 13 is extruded into the movable-side extrusion port 27, and through the space between the second and third sheets. The hard resin material that should serve as the upper head portion 13 of the molding body 4 is extruded to the movable-side extrusion port 27, and the glitter film is provided from the supply port 30 that is opened to the movable-side extrusion port 27 through the third and fourth sheets. 18 is continuously supplied. Similarly, the core wire 11 is continuously supplied from the supply port 31 opening to the movable-side extrusion port 27 through the fourth sheet and the fifth sheet.

Hard and soft resin materials and aggregate materials are supplied to the fixed base 21 from a material supply port (not shown), and the movable base 22 is supplied with the material supply port 3.
Hard and soft resin materials are supplied from 2, 33.

When the wind molding 1 is molded using the mouthpiece unit 20 having the above structure, basically, as shown in FIGS. 4 and 5, the fixed side extrusion port 26 and the movable side extrusion port 27 are used. While pulling the two core wires 11 and the glitter film 18 facing each other at a constant speed, the aggregate 15 is extrusion-molded from the aggregate extrusion port 28 in synchronization with this.
Hard and soft resin materials are extruded from both extrusion ports 26 and 27 around the aggregate 15 immediately after the molding, and the compacts extruded from both extrusion ports 26 and 27 are instantly fused and integrated with each other. The extrusion molding of the wind molding 1 is performed while it is being carried out.

In this case, as shown in FIG.
As long as 2 is at the lower limit position P ₁ , the aggregate extrusion port 28 is completely blocked by the movable mouthpiece 22 to prevent extrusion of the aggregate 15, and the movable-side extrusion port 27 corresponding to the upper head portion 13 Overlaps with and is aligned with a portion of the fixed-side extrusion port 26 corresponding to the upper glass contact piece 12. Therefore, as long as the movable mouthpiece 22 is at the lower limit position P ₁ in FIG. 4, as shown in FIG. 2, the upper molding portion 1A having a uniform cross-section without the aggregate 15 is continuously extruded.

On the other hand, when the movable mouthpiece 22 is slid at a predetermined speed from the lower limit position P ₁ to the upper limit position P ₂ shown in FIG. 5, in parallel with the extrusion molding operation shown in FIG. While the head portion 6 having a uniform cross-sectional shape until then continuously changes so as to gradually increase, the head portion 6 of the upper glass contact piece 12, the upper head portion 13 and the middle leg portion 14 is changed. The three members will be molded into a substantially U-shaped cross section. At the same time, the aggregate extrusion port 28, which has been shielded by the movable mouthpiece 22 until then, is gradually released, and the opening area thereof gradually increases. The aggregate 15 is gradually formed from the portion located on the leg portion 14. Then, when the movable mouthpiece 22 is moved up to a certain position, the aggregate 15 is molded with a substantially L-shaped cross section, and the height of the aggregate 15 gradually increases. As shown in FIG. 1, the upper glass contact piece 12 of the head portion 6 and the middle leg portion 1 are
The aggregate 15 is formed so as to straddle 4 and 4. As a result, the side molding portion 1B in which the cross-sectional shape of the head portion 6 is continuously changed and the cross-sectional shape of the aggregate 15 is continuously changed according to the change in the cross-sectional shape of the head portion 6.
However, it is molded as a long integral body so as to be smoothly continuous with the upper molding portion 1A.

If the movable mouthpiece 22 is temporarily fixed and held at the ascending limit position P ₂ if necessary,
It is also possible to form the uniform cross-section portion having the shape shown in FIG. 3 continuously to the side molding portion 1A whose cross-sectional shape changes continuously as described above.

As described above, the extrusion molding operation of the aggregate 15 and the extrusion molding operation of the wind molding 1 itself are performed in synchronization with each other, and the sectional shapes of the aggregate 15 and the wind molding 1 itself are individually changed. As one continuous wind molding 1 including an upper molding portion 1A (including a corner molding portion 1C) and a side molding portion 1B in which the cross-sectional shape of the head portion 6 and the cross-sectional shape of the aggregate 15 in the longitudinal direction are different from each other. It will be molded.

In the side molding portion 1B having the head portion 6 having a large height, the rigidity or strength of the side molding portion 1B is increased by the aggregate 15 having a bent cross-sectional shape extending over the upper glass abutting piece 12 and the middle leg portion 14 of the head portion 6. Of the side molding portion 1B, and in addition, in the portion of the side molding portion 1B near the corner molding portion 1C where the cross-sectional shape of the aggregate 15 gradually decreases, and in the upper molding portion 1A where the aggregate 15 does not exist, the wind molding 1 itself is easily bent. Can be secured, especially in the wind mall 1
Workability is improved when mounting while bending the windshield 2 along the windshield 2.

That is, in the upper molding portion 1A including the corner molding portion 1C, since the aggregate 15 is not embedded and is formed only by the material of the molding body 4, the wind molding 1 of the windshield 2 is used.
Even if the part to be attached to the windshield is three-dimensionally bent, the wind molding 1 can be easily bent to follow its three-dimensional shape faithfully, and the wind molding 1 can be easily attached to the windshield 2. Is greatly improved.

6 to 8 show a second embodiment of the present invention, in which the notch 3 formed in the lower glass contact piece 7 of the corner molding 1C in the first embodiment is formed. Instead, the corner molding portion 1C and the upper molding portion 1A are different in that the protruding length W ₁ of the lower glass contact piece 7 is smaller than the protruding length W ₂ on the side molding portion 1B side. .

More specifically, in this embodiment, FIGS.
As shown in FIG. 5, the side molding portion 1B has the same shape as that of the first embodiment, and the lower glass contact piece extends from the boundary portion between the side molding portion 1B and the corner molding portion 1C to the corner molding portion 1C side. The projecting length of the lower glass abutting piece 7 in the entire length of the corner molding portion 1C and the upper molding portion 1A is gradually reduced and converges from the W ₂ dimension to the W ₁ dimension.
₁ is smaller than the protruding length W ₂ of the lower glass contact piece 7 on the side molding portion 1A side.

According to the wind molding 1 of this embodiment, the lower glass abutting piece 7 of the upper molding portion 1A including the corner molding portion 1C has a smaller protruding length than the other portions. It is possible to ensure the flexibility of the upper molding portion 1A without the need for such a notch, and it is possible to save the number of steps for post-processing the notch 3 after the extrusion molding of the wind molding 1.

The window molding 1 having such a shape can be easily molded by using the mouthpiece unit 40 having the structure shown in FIGS. That is, in FIG.
10, the shape of a portion of the mouthpiece unit 20 shown in FIGS. 4 and 5 corresponding to the lower glass abutting piece 7 of the fixed side extrusion port 26 is changed, and the lower glass abutting piece 7 has a variable cross-sectional shape. The shield plate 41 is connected to the output shaft 43 of a linear actuator 42, and the shield plate 41 is guided by the guide rail 44 by the action of the actuator 42. It is designed to slide horizontally.

Therefore, as shown in FIGS. 7 and 9, when the upper molding portion 1A is extrusion molded, if the shielding plate 41 is molded while being fixedly held at the forward limit position P ₁₁ , the corner molding portion 1C is included. When the protruding length of the lower glass abutment piece 7 of the upper molding portion 1A becomes small as W ₁ dimension, while the side molding portion 1B is extruded continuously with the upper molding portion 1A including the corner molding portion 1C. If the shielding plate 41 is gradually and continuously slid from the forward limit position P ₁₁ shown in FIG. 9 to the backward limit position P ₁₂ shown in FIG. 10 and then fixedly held at the backward limit position P ₁₂ , As shown in FIG. 8, the protruding length of the lower glass contact piece 7 in the side molding portion 1B becomes relatively large as the W ₂ dimension.

Here, in each of the above-described embodiments, the head portion 6 in the side molding portion 1B is formed to have a substantially U-shaped cross section as shown in FIGS.
However, as shown in FIG. 11, for example, the head portion height of the side molding portion 1B is smaller than that of the upper molding portion 1A without forming the drip groove 16 in the head portion 6 of the side molding portion 1B. You can just make it bigger. In this case, the angled space formed between the vertical wall surface 6b of the head portion 6 and the windshield 2 functions as the drip groove 45.

In each of the above-mentioned embodiments, the aggregate 15 has a cross section L substantially extending over the upper glass contact piece 12 and the middle leg portion 14.
Although it is formed as a character shape, for example, as shown in FIG. 12, a plate-shaped aggregate 15A is embedded only in the middle leg portion 14, or as shown in FIG. 13, the direction of the aggregate 15B is approximately 90 degrees. Alternatively, the upper glass contact piece 12 may be embedded so as to extend along the width direction of the wind molding 1 from the upper glass abutting piece 12 and in these cases, the aggregates 15A and 15B shown in FIGS. The cross-sectional shape may be set to the maximum shape and the cross-sectional shape may be gradually changed.

Further, in each of the above-described embodiments, the wind molding 1 is mounted on the windshield 2 side in advance, and then the windshield 2 on which the wind molding 1 is mounted is mounted on the windshield opening on the vehicle body side. However, the windshield 1 may be attached to the windshield opening portion on the vehicle body side first, and then the wind molding 1 may be attached later so as to fill the gap between the windshield opening edge portion and the windshield. In this case, the shape of the leg portion 5 of the molding body 4 of the wind molding 1 shown in each of the previous embodiments is changed.

[0050]

As described above, according to the structure of the wind molding described in claim 1, the upper molding portion including the corner molding portion is formed to have a uniform sectional shape, whereas the upper molding portion is formed. In the side molding part that continues to the section, the cross-sectional area gradually changes toward the upper molding part side, and the aggregate embedded only in the upper molding part also faces the upper molding part side. Since it is formed to be gradually larger, the upper molding part including the corner molding part is easily bent when the wind molding is mounted on the windshield or the vehicle body, so that the mounting property of the wind molding is improved and the upper molding part is improved. In the side moldings other than the molding, the rigidity of the wind molding is improved due to the reinforcing effect of the aggregate.

Then, as in the invention described in claim 2,
If the projection length of the lower glass abutment piece in the upper molding part is made relatively smaller than that of the side molding part side, the upper molding part becomes easier to bend, and the wind mall mounting property is further improved. By forming the aggregate in a substantially L-shaped cross section as in the invention according to claim 3, the rigidity of the aggregate is further improved, and the effect is obtained in both the width direction and the height direction of the side molding portion. Can be reinforced.

Further, according to the method of manufacturing a wind molding of claim 4, a resin aggregate to be embedded in the side molding is extruded while changing its cross-sectional shape, Extruding a resin material around the aggregate in synchronism with extrusion molding to extrude a side molding portion whose cross-sectional shape gradually changes in the longitudinal direction, while molding an upper molding portion that is continuous with the side molding portion. Since the extrusion molding of the aggregate is prevented while forming the upper molding part with a uniform cross-sectional shape, unlike the case where the metal core material is used, the wind molding of a predetermined shape is required only by the extrusion molding equipment. Since it can be molded, the equipment can be simplified and the equipment cost can be reduced.

Further, the post-processing such as the cutting processing after the extrusion molding and the partial injection molding, which have been indispensable in the past, are not required at all, and the processing man-hours can be reduced, whereby the cost can be reduced. In addition, since there is no portion to be cut off after extrusion molding, waste of material is reduced and material yield is improved.

In addition, since the resin aggregate is extruded in synchronism with the extrusion of the molding itself, it can be formed into any shape, and the degree of freedom of shape of the aggregate is dramatically increased. By increasing the height, there is an advantage that the reinforcing effect of the aggregate can be freely adjusted.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a wind molding showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is an explanatory view of a main part configuration of a mouthpiece unit used for manufacturing the wind molding shown in FIG. 1.

5 is an operation explanatory view of the mouthpiece unit shown in FIG. 4. FIG.

FIG. 6 is a perspective view of a main part of a wind molding showing a second embodiment of the present invention.

FIG. 7 is a sectional view taken along the line CC of FIG. 6;

FIG. 8 is a sectional view taken along line DD of FIG. 6;

9 is an explanatory view of a main part configuration of a mouthpiece unit used for manufacturing the wind molding shown in FIG.

FIG. 10 is an operation explanatory view of the mouthpiece unit shown in FIG. 9.

FIG. 11 is a sectional view of a window molding showing a third embodiment of the present invention.

FIG. 12 is a sectional view of a wind molding showing a fourth embodiment of the present invention.

FIG. 13 is a sectional view of a wind molding showing a fifth embodiment of the present invention.

FIG. 14 is a perspective view of a main part showing an example of a conventional method for manufacturing a wind molding.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wind molding 1A ... Upper molding 1B ... Side molding 1C ... Corner molding 2 ... Windshield 4 ... Mold body 5 ... Legs 6 ... Head 7 ... Lower glass contact piece 12 ... Upper glass contact piece 13 ... upper head part 14 ... middle leg part 15 ... aggregate 16 ... drip groove 20 ... mouthpiece unit 21 ... fixed mouthpiece 22 ... movable mouthpiece 26 ... fixed side extrusion port 27 ... movable side extrusion mouth 40 ... mouthpiece unit 41 ... shielding plate 45 … Drip groove

Claims (4)

[Claims] 1. A long automobile window molding mounted on a peripheral portion of a windshield of an automobile, the upper molding including a corner molding portion along an upper end corner portion of the wind glass and along a roof portion on a vehicle body side. In the section, a molding body composed of a leg section and a head section to be located on the upper surface side of the windshield is formed as a uniform cross section, while the pillar side on the vehicle body side is continuous with the upper molding section. In the portion along the line, the height of the head portion of the molding body gradually increases toward the side of the upper molding portion, and rainwater is collected between the head portion and the windshield or the head portion itself. A drip groove for forming a cross section, and a cross-sectional shape is formed only on the side molding portion in accordance with a change in cross-sectional shape of the head portion of the side molding portion. Automotive window molding but, wherein the thermoplastic resin aggregate changes are embedded. 2. The molding body is formed to have a substantially U-shaped cross section by a leg portion, a head portion, and a lower glass abutment piece protruding from the lower end of the leg portion along the windshield. The wind molding for an automobile according to claim 1, wherein the protruding length of the lower glass abutment piece is formed smaller on the upper molding portion side than on the side molding portion. 3. The head portion of the molding body in the side molding portion includes an upper glass contact piece located on an upper surface of the window glass, an upper head portion spaced apart from the upper glass contact piece by a predetermined amount, and The upper glass abutting piece and the middle leg connecting the upper head portion are formed into a substantially U-shaped section, and the substantially U-shaped space of the head portion is used for collecting rainwater. While being a drip groove, an aggregate having a substantially L-shaped cross section is embedded so as to straddle the upper glass abutting piece of the head portion and the middle leg portion, and the aggregate is along the middle leg portion. 3. The automobile wind molding according to claim 1, wherein the height of the portion gradually changes according to the change in the cross-sectional shape of the head portion of the side molding portion. 4. A movable member having the same shape as that of the upper head portion is mounted on a fixed base having a fixed-side extrusion opening that has substantially the same shape as the cross-sectional shape of the side molding portion excluding the shape of the upper head portion. A movable die having a side extrusion port is slidably overlapped so as to shield a part of the fixed side extrusion port, and a molded body extruded from both extrusion ports while sliding the movable die is melted at the same time as the extrusion. The method for continuously extrusion-molding an automobile window molding according to claim 1, wherein the cross-sectional shape changes in the longitudinal direction by attachment and integration. By continuously sliding the extrusion while continuously changing the extrusion shape of the aggregate and the shape of the molded body extruded around the aggregate. At the time of extrusion molding of the upper molding portion, the movable side extrusion port on the movable mouthpiece side is overlapped with the portion corresponding to the upper glass contact piece of the fixed side extrusion port, and the extrusion is performed in a state in which extrusion of the aggregate is prevented. And a method for manufacturing an automobile wind molding.