JP3572170B2 - Method of manufacturing wind molding for automobile - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a window molding for automobiles, and more specifically, is disposed over a side edge portion of a front window glass and a front pillar to prevent spillage of rainwater or the like from the front window glass to a door glass side. The present invention relates to a method for manufacturing an automobile window molding having a so-called drip function.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 8-156584 discloses this type of side window molding for automobiles.
[0003]
As shown in FIGS. 9 to 11, the conventional side window molding 1 is disposed over a side edge portion of the front window glass 2 and the front pillar 3, and has an upper end portion above the front window glass 2. The side window molding 1 itself is abutted with the upper molding 13 disposed along the edge, and has a substantially U-shaped cross section to be fitted to the flange 4 on the front pillar 3 side. A leg 5, a wide head 6 integrally formed on the upper part of the leg 5, and a side edge of the front window glass 2 integrally formed with the leg 5 on a side of the leg 5. It is formed of a glass holding portion 7 having a substantially U-shaped cross section to be held.
[0004]
A drip groove 8 having a U-shaped cross section which opens laterally is formed between the head 6 and the leg 5 and the glass holding portion 7, and the opening height H of the drip groove 8, that is, the head The distance between the portion 6 and the glass holding portion 7 is set so as to gradually increase from the upper end to the lower end of the side window molding 1 itself.
[0005]
In FIG. 10, reference numeral 9 denotes an adhesive for bonding the front window glass 2 to the flange 10 at the opening edge on the front pillar 3 side, and reference numeral 11 denotes a dam rubber.
[0006]
[Problems to be solved by the invention]
Such a conventional side window molding 1 is formed by a variable cross-section continuous extrusion method as shown in the above-mentioned publication, but is continuously extruded as a single string. After cutting the side window molding into a predetermined length, a relief portion 12 is cut out as shown in FIG. 11 in a portion to be an overlapped portion with the upper molding 13 shown in FIG. It is necessary to separately mold the overlapped terminal portion 14 shown in FIG. 12 as a processing, and when the side window molding 1 is mounted on the vehicle body side, it is necessary to faithfully follow the curvature of the vehicle body or the front window glass 2. It is necessary to perform the so-called habit work on the mall itself.
[0007]
Therefore, in order to continuously change the shape of the extrusion port during extrusion molding, not only the molding work in the extrusion molding process becomes complicated, but also a large number of processing steps are required to obtain the final product shape as described above. In addition, the cost of the side window molding is increased, which is not preferable.
[0008]
In addition, the processing of the escape portion 12 shown in FIG. 11 has to rely on manual work, and the shape of the escape portion 12 tends to vary, and as shown in FIG. In this case, the joint 15 between the extruded part and the molded part clearly appears, and the appearance quality cannot be improved.
[0009]
The present invention has been made in view of the above-mentioned problems, and while the shape of the manufactured wind molding is substantially the same as that of the conventional structure, the cost is reduced by reducing the number of processing steps. It is an object of the present invention to provide a method for manufacturing a wind molding which can greatly improve the appearance quality.
[0010]
[Means for Solving the Problems]
The invention according to claim 1 is provided at the upper end portion so as to overlap with the side edge portion of the front window glass and the front pillar, and to overlap with the upper molding portion provided at the upper edge side of the front window glass. An integrally formed overlapping end portion, a leg portion fitted to the flange portion on the front pillar side, a head portion integrally formed above the leg portion, and a projection protruding from the leg portion to the front window glass side. A glass lip pressed against the upper surface of the side edge portion of the front window glass, and an opening is formed laterally between the head portion and the glass lip, and the opening height thereof gradually increases downward and has a substantially U-shaped cross section. A method for manufacturing a long automobile window molding having a drip groove, wherein mutually independent substantially U-shaped legs and a glass lip are extruded beforehand, respectively. After positioning the legs and the glass lip in a predetermined mold so as to have a relative positional relationship required at the time of mounting to the vehicle body side, the leg and the glass lip are used as inserts for the wind molding together with the overlapped terminal. It is characterized in that the remaining part is integrally formed.
[0011]
The invention described in claim 2 is characterized in that the remaining molded portion in the invention described in claim 1 is molded so as to cover the leg portion and the upper surface side of the glass lip.
[0012]
According to a third aspect of the present invention, when positioning the legs and the glass lip in the first or second aspect of the present invention, a predetermined mold is formed in accordance with the curvatures of the vehicle body side and the front window glass side when mounted on the vehicle body. It is characterized by positioning.
[0013]
According to a fourth aspect of the present invention, the soft layer is previously integrated on the surface of the leg portion and the glass lip of the invention according to any one of the first to third aspects, which is to be a bonding surface with the remaining molded portion. It is characterized by being extruded.
[0014]
Therefore, according to the first aspect of the present invention, the leg and the glass lip which have been formed in the extrusion molding step in advance to have a uniform sectional shape are set in a predetermined mold, and the leg and the glass lip are used as inserts in the mold. By performing the molding, the remaining portion of the window molding is integrally formed with the legs and the glass lip, and at the same time, the overlapped terminal is also integrally formed.
[0015]
In this case, as in the second aspect of the present invention, if the remaining portion is molded by molding so as to cover the upper surfaces of the leg portion and the glass lip, the leg portion and the glass lip which have been extruded in advance are molded. The joint with the part is not exposed.
[0016]
Further, when positioning the legs and the glass lip with respect to the mold as in the invention according to the third aspect, the legs and the glass lip have a predetermined curvature to match the curvatures on the vehicle body side and the front window glass side. When the positioning is carried out, the leg portion and the glass lip are integrated with the remaining mold forming portion while maintaining the curvature.
[0017]
According to the fourth aspect of the present invention, the leg and the glass lip are formed in advance by forming a soft layer on a portion to be joined to a mold forming portion to be formed later. Through the mold forming part.
[0018]
Generally, when an extruded product is used as an insert and the remaining part is molded integrally with the insert, even if both are made of the same material, the fusion at the joint is performed unless the joint surface is subjected to primer treatment. The attachment tends to be incomplete, and in some cases, peeling or the like tends to occur.
[0019]
For this reason, in the invention according to claim 4, by forming a soft layer in advance on a portion of the extruded portion that is to be a junction with the mold forming portion, the soft layer is formed via the soft layer. The extruded part and the mold part are completely fused.
[0020]
【The invention's effect】
According to the first aspect of the present invention, the leg and the glass lip are extruded in advance with a uniform cross-sectional shape, and the leg and the glass lip are used as inserts to mold the remaining portion of the window molding together with the polymerization terminal. Since the molding process is performed, the extrusion process can be simplified by extruding a uniform cross-sectional shape in the extrusion molding process.In addition, since the molding of the polymerization end portion is also performed at the same time as the mold, the conventional molding process is performed. Therefore, there is no need to perform the process in a separate process, and there is an effect that the cost of the window molding can be reduced by simplifying the processing process and reducing the number of steps.
[0021]
In addition, during molding, the legs and the glass lip are integrated with the relative positional relationship required for mounting on the vehicle body side, eliminating the necessity of conventional slicing work. This has the effect of reducing the number of processing steps by one step.
[0022]
According to the second aspect of the present invention, since the mold forming portion is formed integrally with the leg portion and the glass lip so as to cover the upper surface side thereof, a joint portion with the overlapped terminal portion does not occur. Needless to say, since the joint between the extruded part and the mold part is not exposed, the appearance quality of the window molding is greatly improved.
[0023]
In particular, when the leg and the glass lip are positioned on the mold, the leg and the glass are adjusted in accordance with the curvature of the vehicle body and the front window glass when the vehicle is mounted on the vehicle body. By determining the relative positional relationship with the lip, in addition to the fact that the conventionally required habit setting work is not required, the wind molding faithfully follows the vehicle body and the front window glass when mounted on the vehicle body side, This has the effect of further improving the consistency between the wind molding and the vehicle body or the front window glass.
[0024]
According to the invention as set forth in claim 4, since the soft layer is set in advance at the joint between the extruded portion and the die forming portion, the extruded portion and the die formed portion are interposed via the soft layer. There is an effect that they are firmly fused and integrated, and the joining strength between them is further improved.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 3 to 5 are views showing a first exemplary embodiment of the present invention, and show examples of a window molding 21 used in place of the conventional side window molding 1 shown in FIGS. ing.
[0026]
That is, the window molding 21 according to the present embodiment is arranged along the lower edge from the upper end of the front windshield 2 so as to straddle the side edge portion of the front windshield 2 and the front pillar 3. The overlapped terminal portion 22 that overlaps with the terminal portion on the upper molding 13 side shown in FIG. 9 is formed integrally with the portion.
[0027]
As shown in FIGS. 3 to 5, the wind molding 21 has a substantially V-shaped or substantially U-shaped leg 23 formed of a pair of leg pieces 23 a and 23 b, and an integral upper end of the leg 23. A wide head portion 24 formed in a circular arc shape having a smooth surface, a substantially U-shaped glass holding portion 25 located below the head portion 24, and the leg portion 23 and the glass holding portion 25 described above. And a neck 26 intermediate the two.
[0028]
In addition to the concave groove 27, ridges 28 and 29 are formed on the leg portion 23 in two upper and lower stages. The inner flange portion 30a engages and elastically contacts the concave groove 27 and the ridges 28 and 29. Then, the window molding 21 is fixed to the vehicle body by fitting the leg portion 23 to the inner flange portion 30a of the drip channel 30 attached to the front pillar 3.
[0029]
A weather strip 31 is fitted and fixed to the outer flange portion 30b of the drip channel 30 so as to be adjacent to the window molding 21. The front lip 32 and the drip seal lip 33 of the weather strip 31 are fixed to the front door. Sash portion (frame portion) 34 comes into elastic contact.
[0030]
On the other hand, a glass lip 36 is projected from an upper side 35 of the substantially U-shaped glass holding portion 25, and a holding lip 38 is projected from a lower side 37. The holding lip 38 is elastically in contact with the upper surface of the glass 2 and is embedded in, for example, a urethane-based adhesive 9 that adhesively fixes the front window glass 2. 11 is a dam rubber.
[0031]
A drip groove 39 is formed between the head portion 24, the neck portion 26, and the glass holding portion 25 as a laterally substantially U-shaped space, and the opening height of the drip groove 39, that is, the head portion 24 and the glass The distance formed by the holding portion 25 gradually increases continuously from the upper end to the lower end of the window molding 21. That is, as shown in FIG. 3, the opening height of the drip groove 39 gradually decreases as approaching the upper end of the window molding 21, and finally, as shown in FIG. The drip groove 39 has completely disappeared, and the head portion 24 and the glass holding portion 25 are in direct contact with each other.
[0032]
As described above, the height of the window molding 21 is gradually increased from the upper end to the lower end, and in order to cope with this shape change, the wind molding 21 is shown in FIGS. As described above, while the height of the inner flange portion 30a of the drip channel 30 is constant, the flange portion 10 of the opening edge for attaching the front window glass on the front pillar 3 side becomes closer to the lower end of the front window glass 2. It has been changed to sink gradually.
[0033]
Each of the legs 23 and the glass holding portion 25 is previously formed as an extruded product having a uniform cross-sectional shape in the longitudinal direction, and the legs 23 and the glass holding portion 25 are used as inserts. The window molding 21 is formed to have a predetermined cross-sectional shape by molding the head portion 24 and the neck portion 26 by die molding.
[0034]
Here, the leg portion 23 and the glass holding portion 24 are both formed by extrusion molding with a resin material such as non-plasticized vinyl chloride (non-plasticized PVC). By adopting, the groove 23 and the ridges 28 and 29 of the leg portion 23, the glass lip 36 and the holding lip 38 of the glass holding portion 25, and the skin layer 40 on the upper surface of the leg portion 23 are not used. It is molded from a resin material such as paraffin-containing PVC or NBR alloy that is softer than plastic PVC. Further, for the mold portion, that is, the head portion 24 and the neck portion 26, which are molded by using the leg portions 23 and the glass holding portions 25 which are extruded in advance as inserts, the material of the leg portions 23 and the like is made of non-plastic PVC or the like. It is formed of harder PVC or the like.
[0035]
In forming the window molding 21 having such a structure, the leg portions 23 and the glass holding portions 25, which are extruded products, are extruded in advance with a uniform length of a predetermined length. When the legs 23 and the glass holding portions 25 are individually extruded, the concave grooves 27, the projections 28 and 29, the skin layer 40, the glass lip 36, and the holding lip 38 are simultaneously extruded as described above. Needless to say.
[0036]
Subsequently, as shown in FIGS. 1 and 2, a mold 41 having a cavity 42 corresponding to the shape of the wind molding 21 including the overlapped terminal portion 22 shown in FIG. 3 is prepared, and the cavity of the mold 41 is prepared. The leg portion 23 and the glass holding portion 25, which are extruded products, are positioned with respect to 42. The mold 41 is formed by a plurality of mold pieces 41a to 41f that can be divided.
[0037]
At this time, the extruded leg portion 23 and the glass holding portion 25 are extruded in advance with a uniform cross-sectional shape as described above. 42 are fitted so as to faithfully follow the portion corresponding to the leg portion and the portion corresponding to the glass holding portion. That is, the position and inclination of the portion corresponding to the leg portion and the portion corresponding to the glass holding portion of the cavity 42 are determined in consideration of the curvature of the front pillar 3 on which the window molding 21 is mounted or the curvature of the front window glass 2. Is determined, the leg 23 and the glass holding portion 25, which are extruded products, faithfully follow the above-mentioned leg portion and the glass holding portion. The relative positional relationship at the time of mounting is reproduced.
[0038]
When the leg 23 and the glass holding portion 25 are positioned in this manner, the mold 41 is clamped, and a predetermined resin material is injected into the cavity 42 from a material injection port (not shown). By injecting the resin material into the cavity 42, the head part 24 and the neck part 26, which are the mold forming parts, are formed for the first time. The leg part 23 and the glass holding part 25, which are the extruded products, are formed through the mold forming parts. It is integrated while maintaining the relative positional relationship.
[0039]
At the same time, as shown in FIG. 3, an overlapped terminal portion 22 is integrally formed on the upper end of the window molding 21 so as to be continuous with the leg portion 23 and the glass holding portion 25.
[0040]
At the time of this injection molding, the head portion 24 which is a mold forming portion is formed so as to completely cover not only the skin layer 40 on the upper surface of the leg portion 23 but also the upper surface side of the glass holding portion 25 except for the glass lip 36. Therefore, the joint between the leg 23 or the glass holding portion 25 as the extruded product and the head 24 or the neck 26 as the mold forming portion is not exposed to the outside.
[0041]
Further, even if the material of the leg portion 23 and the glass holding portion 25 which are the extruded products and the material of the head portion 24 and the neck portion 26 which are the die forming portions are both of PVC type, once the extruded products are completely completed. Since the head portion 24 and the neck portion 26, which are the mold forming portions, are fused to the solidified leg portions 23 and the glass holding portions 25, generally, the affinity between the two portions. Is not always sufficient, and requires a primer treatment or the like.
[0042]
In consideration of this point, in the present embodiment, the extruded leg portion 23 and the glass holding portion 25 are provided with a soft material in advance at a portion to be joined to the head portion 24 or the neck portion 26 which is a mold forming portion. Since the skin layer 40 and the glass lip 36 are formed at the same time, fusion between the extruded product and the mold forming portion is performed extremely well, and peeling at the joint portion between them can be prevented beforehand.
[0043]
As described above, according to the present embodiment, the leg 23 and the glass holding portion 25 are extruded in advance with a uniform cross-sectional shape, and the die is molded using these as inserts, so that the cross-sectional shape is continuous. In addition to the fact that the window molding 21 having a so-called variable cross-sectional shape that changes to the above-mentioned shape can be easily formed, the molding of the overlapping terminal portion 22 at the upper end of the window molding 21 can be performed in one step.
[0044]
FIGS. 6 to 8 are views showing a second embodiment of the present invention, which differs from the first embodiment in that a glitter film 43 for decoration is embedded in a head portion 24 of a window molding 21. ing.
[0045]
More specifically, when the leg 23 is extruded, the glitter film 43 is integrally adhered to the skin layer 40 of the leg 23 by a simultaneous extrusion molding method, while the leg 23 and the glass holding portion 25 are formed. When the head part 24 and the neck part 26, which are mold molding parts, are molded by using the mold as an insert, the bright film 43 equivalent part is molded so as to be concealed by the mold. As a result, when the window molding 21 is formed, the glittering film 43 is exposed on the head portion 24 of the window molding 21, so that a so-called decorative effect is exhibited.
[0046]
It is needless to say that also in the present embodiment, the same operation and effect as in the first embodiment can be obtained.
[0047]
Here, the glass holding portion 25 in the first and second embodiments does not necessarily have to have a substantially U-shaped cross section, and it is sufficient that the glass holding portion 25 has at least a glass lip 36 that elastically contacts the front window glass 2.
[Brief description of the drawings]
FIG. 1 is a view showing a first embodiment of the present invention, and is a cross-sectional view of a window molding die;
FIG. 2 is a view showing the first embodiment of the present invention, and is a cross-sectional view of a window molding die;
FIG. 3 is a perspective view of a main part of a window molding formed by the molds of FIGS.
FIG. 4 is a sectional view taken along the line AA in FIG. 3;
FIG. 5 is a sectional view taken along the line BB in FIG. 3;
FIG. 6 is an essential part perspective view of a window 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;
FIG. 9 is a perspective view of a main part around a front pillar portion of an automobile.
FIG. 10 is an enlarged perspective view of a main part of FIG. 9;
11 is an essential part perspective view of only the side window molding shown in FIG. 9;
FIG. 12 is a perspective view of a terminal portion of the side window mall.
[Explanation of symbols]
2: Front wind glass 3: Front pillar 13: Upper molding 21: Wind molding 22: Overlapping terminal part (mold forming part)
23 ... Leg (extruded product)
24 head part (mold forming part)
25 ... Glass holding part (extruded product)
26 ... Neck (molding part)
30 drip channel 30a inner flange 36 glass lip 39 drip groove 40 skin layer 41 mold

Claims (4)

It is arranged across the side edge of the front window glass and the front pillar,
A polymerization terminal portion integrally formed on the upper end portion so as to overlap with the upper molding portion provided on the upper edge portion side of the front window glass,
A leg that fits into the flange on the front pillar side,
A head unit integrally formed above the leg unit,
A glass lip projecting from the leg toward the front window glass and pressing against a top surface of a side edge of the front window glass;
A drip groove having a substantially U-shaped cross-section, which is formed laterally between the head portion and the glass lip, and whose opening height gradually increases downward,
A method for manufacturing a long automotive wind molding having
Extruding a mutually independent substantially U-shaped leg and glass lip in advance,
After positioning these legs and glass lip in a predetermined mold so as to have the relative positional relationship required when mounted on the vehicle body side,
A method for manufacturing a window molding for automobiles, wherein the remaining portion of the window molding is integrally formed with the overlapping end portion using the legs and the glass lip as inserts. 2. The method according to claim 1, wherein the remaining molded portion is molded so as to cover the upper surface of the leg and the glass lip. 3. The vehicle window according to claim 1, wherein when the legs and the glass lip are positioned, the legs and the glass lip are positioned in a predetermined mold in accordance with the curvatures of the vehicle body and the front window glass when mounted on the vehicle body. The manufacturing method of the mall. The soft layer is extruded in advance into the surface of a portion of the leg and the glass lip that is to be a joining surface with the remaining molded portion, and is previously extruded integrally. Of manufacturing a wind molding for an automobile.

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