Inside weatherstrip and method for forming the bent portion of the inside weatherstrip.

Abstract

To provide an inside weather strip capable of forming a folded part of an inside weather strip in correspondence with a crank shape of a door waist part and of improving work efficiency and reducing costs by leaving a glass seal lip and a flocked part as they are.SOLUTION: An inside weather strip 21 is formed into a long shape by extrusion molding, and a mounting base portion 22 is provided with a notch forming part 29 at an upper end to be a folded part 28 of a door waist part, and two cut-out parts 30, 31 notched downward to each other are provided at both end parts in a longitudinal direction of the notch forming part. A notch part 32 is provided at a part corresponding to a folded part of a contact lip part 24. Hard resin materials are filled in the notch forming part and the respective cut-out parts in the state that the notch part is folded into a crank shape, and by filling prescribed resin material in the notch part, the contact lip part 24' and a rib 33 are formed.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to an inside weatherstrip for an automobile, and more particularly to an inside weatherstrip attached to a door waist portion bent in a crank shape of an automobile and a method for forming a bent portion of the inside weatherstrip.

Background Art

[0002] FIG. 1 is a front side perspective view of a vehicle showing a door waist portion of a truck to which the inside weatherstrip of the present invention and a conventional inside weatherstrip are applied, and FIG. 6 is a perspective view showing a conventional inside weatherstrip.

[0003] As shown in FIG. 1, a vehicle door 2 of a vehicle 1 such as a truck is formed by integrally joining a door outer panel, which is a door panel, and a door inner panel by hemming or the like. It is composed of a lower door body 4 from the door waist portion 3, an upper arch-shaped door sash 5 from the door waist portion 3, and a door glass 6 that moves up and down between the door body 4 and the door sash 5.

[0004] The door waist portion 3 has a shape that is bent in a crank shape when viewed from the side in terms of design. As the inside weatherstrip 7 attached to such a door waist portion 3, there is one described in Patent Document 1 below.

[0005] As shown in FIG. 6, this inside weatherstrip 7 is formed by being bent in a crank shape in accordance with the shape of the door waist portion 3, and has a U-shaped mounting base 8 fixed to the door inner panel constituting the door waist portion 3, and upper and lower two-stage glass seal lips 9, 10 that are integrally provided on the outer surface of the mounting base 8 and slidably contact one side surface of the door glass 6 that moves up and down. Both of these glass seal lips 9, 10 are provided with a flocked portion (not shown) that is a low-friction material for reducing the sliding resistance against the door glass 6 at their respective tip portions and improving the appearance.

[0006] Furthermore, the inside weatherstrip 7 may also be referred to as the inner weatherstrip of the door waist section 3, waist inner seal, beltline weatherstrip, or door waist inside seal member, depending on its mounting position on the vehicle door 2.

[0007] Furthermore, there are two methods for bending the crank-shaped inside weatherstrip 7: one is to bend the bending portion 7a by molding, such as by injection molding, and the other is to bend a portion of the extruded product by heat treatment at a high temperature. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 9-272338 (Figures 1 and 6) [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] However, as mentioned above, if the folded portion 7a of the inside weatherstrip 7 is folded into a crank shape, and the entire folded portion 7a is formed by die molding, then after die molding, it becomes necessary to attach the flocked portion to the tip surface of each glass seal lip 9, 10, for example, by hand. This not only reduces the overall manufacturing efficiency but also necessitates equipment to create the flocked portion, leading to increased processing costs.

[0010] Furthermore, if a portion of the inside weatherstrip 7, which is formed by extrusion molding, is subjected to heat treatment, it becomes prone to deformation due to the difference in circumference between the inner and outer sides, making it impossible to bend it into the desired crank shape. In addition, a bending jig is required, which may increase processing costs.

[0011] The present invention was devised in view of the technical problems of the conventional inside weatherstrip, and provides an inside weatherstrip that can be bent to match the crank shape of the door waist portion by extrusion molding, and that can leave the glass seal lip and flocked portion formed by extrusion molding as they are, thereby improving work efficiency and reducing costs. [Means for solving the problem]

[0012] The invention described in claim 1 is an inside weatherstrip that is attached to the crank-shaped bent door waist portion of a vehicle door and slides against a retractable door glass, The inside weatherstrip is formed in an elongated shape by extrusion molding and has a mounting base that is fixed to the door inner panel in the door waist portion, and a glass seal lip that protrudes from the mounting base side toward the door glass side and slides against the door glass via a flocked portion formed at its tip. The mounting base has a notched portion formed along its longitudinal direction at the upper end of the folding portion corresponding to the crank-shaped folded portion of the door waist portion, and two notches cut downward from each other at both ends of the longitudinal direction of the notched portion. The folding portion is folded in a crank shape via the notched portion and each notch, and is fixed by filling it with a hard resin material of the same material as or similar to the mounting base.

[0013] Furthermore, the invention of the method for forming the bent portion of an inside weatherstrip as described in claim 4 comprises the steps of cutting off by punching a notch formed along the longitudinal direction at the upper end of the mounting base of the bent portion of the inside weatherstrip which is integrally formed by extrusion molding, and two notches formed at both ends of the notch formed in the longitudinal direction, The process of setting the aforementioned bent portion inside the mold forming die while bending it through the notched portion and the two cut portions, With the aforementioned bent portion set inside the mold, the process involves filling the notched portion and each cut-out portion with a hard molten resin material of the same or similar material as the mounting base, After cooling, the mold molding die is released and a portion of the inside weatherstrip is removed. It is characterized by having [this feature]. [Effects of the Invention]

[0014] According to the invention described in claim 1, an inside weatherstrip integrally formed by extrusion molding can be easily formed to match the crank shape of the door waist portion.

[0015] Furthermore, by leaving the glass seal lip and flocked areas that slide against the door glass formed by extrusion molding, it becomes unnecessary to separately form the glass seal lip and flocked areas afterward. Therefore, it is possible to improve processing efficiency and reduce manufacturing and processing costs.

[0016] According to the invention described in claim 4, the two notches provided in the mounting base facilitate the crank-shaped bending operation into the mold. Furthermore, since the notched portion and the interior of each notch are filled with, for example, the same hard resin material as the mounting base, the material conforms well and a stable shape can be maintained after molding. [Brief explanation of the drawing]

[0017] [Figure 1] This is a front-side perspective view of a vehicle showing the door waist area of ​​a truck to which the present invention and a conventional inside weatherstrip are applied. [Figure 2] This is a cross-sectional view along line AA in Figure 1, showing an embodiment of the inside weatherstrip according to the present invention. [Figure 3]Shows the manufacturing process of the inside weather strip provided in this embodiment. (a) is a front view of the inside weather strip formed by extrusion molding, and (b) is a front view showing a state where a part of the bending portion of the inside weather strip is punched out. [Figure 4] Shows the manufacturing process of the inside weather strip continuing from FIG. 3. (c) is a front view showing a state where a part of the inside weather strip is set in an injection mold to form a bending portion, and (d) is a front view showing a state where a molten resin material is filled in a part of the bending portion of the inside weather strip in the injection mold. [Figure 5] It is a rear view showing the notch portion of the bending portion of the inside weather strip of this embodiment. [Figure 6] It is a perspective view showing a conventional inside weather strip.

Mode for Carrying Out the Invention

[0018] Hereinafter, embodiments of the inside weather strip according to the present invention and a method for manufacturing the inside weather strip will be described based on the drawings.

[0019] FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 showing an embodiment of the inside weather strip according to the present invention.

[0020] The vehicle door 2 of a vehicle 1 such as a truck is composed of a lower door body 4 from the door waist portion 3 and an arch-shaped door sash 5 above the door waist portion 3 as shown in FIG. 1 described above.

[0021] The door waist portion 3 is a part at the upper end of the door body 4, formed by the waist flange portion 11a of the door inner panel 11 (described later) and the waist flange portion of the door outer panel (not shown). As shown in Figure 1, for design purposes, it is formed in a crank-like shape when viewed from the side. A door glass run (not shown) is attached to the inner circumference of the door sash 5, and the door glass 6 is guided and supported in this door glass run so that it can move up and down. Furthermore, a door weatherstrip (not shown in the diagram) is attached in a closed loop shape to the interior periphery of the vehicle door 2, including the door body 4 and door sash 5. When the door is closed, the door weatherstrip elastically contacts the periphery of the door opening on the vehicle body side, sealing the interior and exterior of the vehicle. This ensures airtightness, watertightness, and sound insulation.

[0022] Furthermore, as shown in Figure 2, a resin door trim (interior lining) 12, which has a predetermined decorative finish on its surface, is attached to the inside (interior side) of the door body 4.

[0023] An inside weatherstrip 21 made of an elastic material, such as an olefin-based thermoplastic elastomer (TPV), is attached to the waist flange portion 11a of the door inner panel 11. This inside weatherstrip 21 is formed by extrusion molding to have a uniform cross-sectional shape in the longitudinal direction, and as shown in Figure 2, it comprises a mounting base portion 22 attached to the door inner panel 11, a glass seal lip 23 formed to protrude diagonally upward from the lower part of the mounting base portion 22 toward the door glass 6, and a plate-shaped contact lip portion 24 integrally formed with the lower end of the mounting base portion 22 and in contact with the inner surface 11b on the exterior side of the door inner panel 11.

[0024] The mounting base 22 is formed in a plate shape and extends along its longitudinal direction. The outer portion 22a on the vehicle side, i.e., the side facing the door glass 6, is made of a hard resin material of TPV, while the inner portion 22b, which is provided on the opposite side of the outer portion 22a and covers the outer portion 22a, is made of a soft resin material of TPV. The outer portion 22a is formed in a thin plate shape, while the inner portion 22b is formed in an even thinner inverted L-shape in cross-section, covering the upper end surface of the outer portion 22a and extending to the contact lip portion 24. Furthermore, the mounting base 22 has insertion holes 26 formed through it at predetermined positions in the longitudinal direction, into which the legs of a clip 25 fixed to the door inner panel 11 are inserted, and the mounting base 22 is attached and fixed to the door inner panel 11 by the clip 25.

[0025] The glass seal lip 23 is formed in a nearly flat tongue shape and protrudes diagonally upward from the interior side surface of the mounting base 22. The outer surface of the glass seal lip 23 on the exterior side is covered with a flocked portion 27 made of a low-friction material such as a silicone resin, a fluororesin, or pile. This flocked portion 27 elastically contacts the interior surface 6a of the door glass 6 on the interior side, and slides against the interior surface 6a during the raising and lowering operation of the door glass 6, thereby facilitating its raising and lowering movement.

[0026] As shown in Figure 2, the contact lip portion 24 is formed in a substantially plate shape, and the lower part is bent in a V-shape toward the interior of the vehicle from the upper end portion 24a which is integrally connected to the lower end portion of the mounting base portion 22, and the lower end portion from this bent portion 24b to the lower edge 24c is tapered.

[0027] Furthermore, the inside weatherstrip 21 is designed to be bent into a crank shape to correspond to the crank shape of the door waist section 3 mentioned above.

[0028] In other words, the inside weatherstrip 21 is designed to have a bent portion 28 formed based on the molding process shown in Figures 3(a)(b) to 4(c)(d), which will be described later.

[0029] As shown in Figures 3(b) and 5, which will be described later, the inside weatherstrip 21 has an elongated cutout along its longitudinal direction, with the outer part 22a of the hard resin material and the inner part 22b of the soft resin material of the mounting base 22 corresponding to the crank-shaped bend portion 28. This cutout portion 29 is not cut out over the entire vertical width of the mounting base 22, but only by a predetermined width W on the upper end side. At both ends of this cutout portion 29 in the longitudinal direction, that is, at positions corresponding to the two crank-shaped bends of the door waist portion 3, two notches 30 and 31 are cut into a roughly U-shape toward the contact lip portion 24. The same hard resin material as the mounting base 22 is then filled into the cutout portion 29 and the two notches 30 and 31 by injection molding, which will be described later.

[0030] Furthermore, as shown in Figures 3(b) and 5, the contact lip portion 24 is cut out in a strip along its longitudinal direction in the same area as the formation region of the bent portion 28, and a contact lip portion 24' is formed in this cutout portion 32 by injection molding using the same soft resin material and structure as the contact lip portion 24, as shown in Figure 4(b), which will be described later. Also, a strip-shaped rib 33 is integrally provided on the outer surface of this contact lip portion 24' on the glass seal lip 23 side, as shown in Figures 2 and 4(b). This rib 33 is formed in a rectangular cross-section using a hard resin material, the same material as the mounting base portion 22, and its longitudinal length is approximately the same as the length of the cutout portion 29. [Method for forming the folded portion of the inside weatherstrip] The folded portion 28 of the inside weatherstrip 21 is formed by the first to fifth steps shown in Figures 3(a)(b) and 4(c)(d).

[0031] Figure 3 shows the manufacturing process of the inside weatherstrip used in this embodiment, where (a) is a front view of the inside weatherstrip formed by extrusion molding, and (b) is a front view showing a part of the folded portion of the inside weatherstrip that has been punched out. Figure 4 shows the manufacturing process of the inside weatherstrip continuing from Figure 3, where (c) is a front view showing a part of the inside weatherstrip set in an injection molding die to form the folded portion, and (d) is a front view showing a part of the folded portion of the inside weatherstrip filled with molten resin material in the injection molding die. Figure 5 is a rear view showing the cutout portion of the folded portion of the inside weatherstrip of this embodiment.

[0032] First, as shown in Figure 3(a), an inside weatherstrip 21 of a predetermined length is integrally formed by extrusion molding (first step). In other words, the mounting base 22, the glass seal lip 23, and the contact lip portion 24 are formed simultaneously in this extrusion molding. Also, during this extrusion molding, the flocked portion 27 is formed simultaneously on the outer surface of the contact lip portion 24.

[0033] Next, the bent portion 28 of the inside weatherstrip 21 is set in an injection molding die for molding. Before this injection molding, as shown in Figures 3(b) and 5, a notch forming portion 29 (dotted line portion in Figure 3(b)) and two cut portions 30 and 31 (dashed lines portion) are cut out of the bent portion 28 by punching. Also, as shown by the dotted line, a notch portion 32 is formed by punching out the portion of the contact lip portion 24 corresponding to the formation area of ​​the bent portion 28 (second step). In this state, with each portion punched out, as shown in Figure 3(b), the glass seal lip 23 formed by the previous extrusion molding and the flocked portion 27 on its outer surface remain on the bent portion 28.

[0034] Next, as shown in Figure 4(c), the bent portion 28 of the inside weatherstrip 21 is set inside the injection molding die. That is, the portion that will become the bent portion 28 is set inside the injection molding die while being bent in a crank shape using the notched portion 29 and the two cut portions 30 and 31 (third step). It goes without saying that the injection molding die has a cavity formed inside that accommodates the bent portion 28.

[0035] Next, as shown by the dots in Figure 4(d), the notched portion 29 and the cut portions 30 and 31 in the injection molding die are filled with a hard molten resin material that is the same as or nearly the same as the outer portion 22a of the mounting base 22. At the same time, the notched portion 32 on the contact lip portion 24 side is filled with the same soft molten resin material as the contact lip portion 24 to form the contact lip portion 24', and the outer surface of this contact lip portion 24' on the glass seal lip 23 side is filled with a hard molten resin material that is the same as the outer portion 22a of the mounting base 22 to form the rib 33 (fourth step).

[0036] In this fourth step, the notched portion 29 and the cut portions 30 and 31 are filled with the resin material to conform to the original shape of the mounting base portion 22. Also in this fourth step, as described above, the molten resin material is filled into the notched portion 32 of the contact lip portion 24, thereby forming the contact lip portion 24', which is a part of the notched contact lip portion 24, and the rib 33 together.

[0037] Next, after the injection molding die has cooled, it is demolded and a portion of the inside weatherstrip 21 is removed from the molding die (step 5). This completes the molding of the crank-shaped bent portion 28 of the inside weatherstrip 21.

[0038] As described above, according to this embodiment, a bent portion 28 can be formed in the inside weatherstrip 21, which is integrally formed by extrusion molding, to match the crank shape of the door waist portion 3.

[0039] Furthermore, by leaving the glass seal lip 23 that slides against the door glass 6 and the flocked portion 27 provided on the outer surface of the glass seal lip 23 as they are at the bent portion 28 of the inside weatherstrip 21, it becomes unnecessary to separately form the glass seal lip 23 and the flocked portion 27.

[0040] Therefore, the need to manually form the flocked portion 27 after the fact is eliminated, and the equipment for forming the flocked portion 27 is no longer required, which improves manufacturing efficiency and reduces manufacturing and processing costs.

[0041] Furthermore, by providing the notches 30 and 31, it becomes possible to distribute the stress when the mounting base 22 is bent. This makes it possible to easily bend a portion of the inside weatherstrip 21 into the desired crank shape.

[0042] Furthermore, since the same hard resin material as the mounting base 22 is filled into the notched portion 29 and each of the cut portions 30 and 31, the material conforms well to the structure and maintains a stable shape after injection molding.

[0043] Furthermore, by providing a strip-shaped rib 33 on the outer surface of the contact lip portion 24', the contact lip portion 24' of the bent portion 28 after molding can be made to conform to the bent shape. In other words, the contact lip portion 24' formed by injection molding tends to deform in the direction of returning to a straight shape, just like the contact lip portion 24 formed by extrusion molding. Since this deformation back to a straight shape can be suppressed by the rib 33 made of a high-strength hard resin material, the proper bent shape of the bent portion 28 can be maintained.

[0044] The present invention is not limited to the above-described embodiment. For example, the vertical width of the notched portion 29 of the inside weatherstrip 21 and the depth of the cut portions 30 and 31 can be arbitrarily changed depending on the bending angle and manner of the bent portion 28.

[0045] Furthermore, the present invention makes it possible to form the bent portion 28 by forming only the notched portion 29 and the cut portions 30, 31 without providing the notched portion 32, and filling these portions with molten resin material inside the injection molding die. In other words, in the bending process of the inside weatherstrip 21, forming the notched portion 32 further improves the bendability inside the injection molding die, but even without forming the notched portion 32, good bendability inside the injection molding die can be obtained simply by forming the notched portion 29 and the cut portions 30, 31.

[0046] Furthermore, the cross-sectional shape of the inside weatherstrip 21 is not limited to the configuration of the above embodiment, and can be applied to, for example, the conventional structure or other structures.

[0047] As a method for forming the inside weatherstrip and the bent portion of the inside weatherstrip based on the embodiments described above, for example, the following embodiments are possible.

[0048] In other words, a preferred embodiment of the inside weatherstrip according to the present invention is an inside weatherstrip that is attached to the crank-shaped bent door waist portion of a vehicle door and slides against a retractable door glass, The inside weatherstrip is formed in an elongated shape by extrusion molding and has a mounting base that is fixed to the door inner panel in the door waist portion, and a glass seal lip that protrudes from the mounting base side toward the door glass side and slides against the door glass via a flocked portion formed at its tip. The mounting base has a notched portion formed along its longitudinal direction at the upper end which becomes a bent portion corresponding to the crank-shaped bent portion of the door waist portion, and two notches cut downward toward each other are provided at both ends of the notched portion in the longitudinal direction. The aforementioned bent portion is characterized by being bent into a crank shape via the notched portion and each cut portion, and then being filled and fixed with a hard resin material of the same material as or similar to the mounting base.

[0049] According to an embodiment of this invention, the folded portion of the inside weatherstrip, which is integrally formed by extrusion molding, can be folded to match the crank shape of the door waist portion via a notched portion or a cut portion. Furthermore, by leaving the extruded glass seal lip and the flocked portion provided on the glass seal lip as they are, it becomes unnecessary to separately form the seal lip and the flocked portion. Therefore, costs can be reduced. More preferably, a strip-shaped contact lip portion is integrally provided at the lower part of the mounting base, which contacts one side of the door inner panel when the mounting base is fixed to the door inner panel, and a strip-shaped rib is provided on the outer surface of the contact lip portion opposite to the door inner panel. The rib is characterized in that it is formed at the same position as the longitudinal formation area of ​​the notched portion of the mounting base and has approximately the same length as the notched portion.

[0050] According to an aspect of this invention, the strip-shaped ribs provided on the outer surface of the contact lip portion make it possible to suppress linear deformation of the contact lip portion located at the bending portion and maintain the bent shape.

[0051] More preferably, the two notches are formed in a U-shape, and the bent portion is formed into a crank shape by bending it around each of the notches.

[0052] According to this embodiment of the invention, the stress generated when bending the mounting base of the bending portion is distributed by each notch. This makes it possible to easily bend a portion of the inside weatherstrip into a desired crank shape.

[0053] More preferably, a method for forming the folded portion of the inside weatherstrip, A step of cutting off by punching a notch formed along the longitudinal direction at the upper end of the mounting base of the bent portion of the inside weatherstrip which is integrally molded by extrusion molding, and two notches formed at both ends of the notch in the longitudinal direction, The process of setting the aforementioned bent portion inside the mold forming die while bending it through the notched portion and the two cut portions, With the aforementioned bent portion set inside the mold, the process involves filling the notched portion and each cut-out portion with a hard molten resin material of the same or similar material as the mounting base, After cooling, the mold molding die is released and a portion of the inside weatherstrip is removed. It is characterized by having [this feature].

[0054] According to this embodiment of the invention, the two notches provided in the mounting base facilitate the crank-shaped bending operation into the mold. Furthermore, since the notched portion and the interior of each notch are filled with, for example, the same hard resin material as the mounting base, the material conforms well and a stable shape can be maintained after molding.

[0055] More preferably, during the extrusion molding process, a strip-shaped contact lip portion is formed together with the lower part of the mounting base, A notch is formed along the longitudinal direction by punching at a position corresponding to the notched portion of the mounting base of the contact lip portion. During the molding process, the notch portion is characterized by forming a contact lip portion at the same position as the longitudinal formation area of ​​the notch portion of the mounting base and having approximately the same length as the notch portion, and a rib along the longitudinal direction on the outer surface of the contact lip portion on the door glass side.

[0056] According to an embodiment of this invention, the contact lip portion formed by filling the notch with resin material during injection molding is prone to deformation in the direction of returning to a straight shape, similar to the contact lip portion formed by extrusion molding. Therefore, this deformation back to a straight shape can be suppressed by a rib made of a high-strength, hard resin material, thereby maintaining the bent shape. [Explanation of Symbols]

[0057] 1…Vehicle 2…Vehicle doors 3... Door waist section 4… Door body 5... Door sash 7…Conventional inside weatherstrip 7a...Folded portion of conventional inside weatherstrip 11…Door inner panel 21...Inside weatherstrip according to an embodiment of the present invention 22…Mounting base 23... Glass seal lip 24... Contact lip section 24'... Contact lip area 25… Clip 27…Hair transplant area 28…Folded section of the inside weatherstrip 29... Notch formation section 30・31…cut section 32... Notch 33... Rib

Claims

1. An inside weatherstrip that is attached to the crank-shaped bent door waist portion of a vehicle door and slides against a retractable door glass, The inside weatherstrip is formed in an elongated shape by extrusion molding and has a mounting base that is fixed to the door inner panel at the door waist and a glass seal lip that protrudes from the mounting base side toward the door glass side and slides against the door glass via a flocked portion formed at its tip. The mounting base is provided with a notched portion formed along its longitudinal direction at the upper end, which is the bent portion corresponding to the crank-shaped bent portion of the door waist, and two notches cut downward from each other at both ends of the longitudinal direction of the notched portion. An inside weatherstrip characterized in that the bent portion is bent in a crank shape via the notched portion and each cut portion, and then fixed by filling it with a hard resin material of the same material as or similar to the mounting base.

2. An inside weatherstrip as described in claim 1, A strip-shaped contact lip portion is integrally provided at the lower part of the mounting base, which contacts one side of the door inner panel when the mounting base is fixed to the door inner panel, and a strip-shaped rib is provided on the outer surface of the contact lip portion opposite to the door inner panel. The inside weatherstrip is characterized in that the rib is formed at the same position as the longitudinal formation area of ​​the notched portion of the mounting base and has approximately the same length as the notched portion.

3. An inside weatherstrip as described in claim 1, The inside weatherstrip is characterized in that the two notches are formed in a U-shape, and the bent portion is bent around each of the notches to form a crank shape.

4. A method for forming the folded portion of an inside weatherstrip as described in claim 1, A step of cutting off by punching a notch formed along the longitudinal direction at the upper end of the mounting base of the bent portion of the inside weatherstrip, which is integrally molded by extrusion molding, and two notches formed at both ends of the notch in the longitudinal direction, The process of setting the aforementioned bent portion inside the mold forming die while bending it through the notched portion and the two cut portions, With the aforementioned bent portion set inside the mold, the process involves filling the notched portion and each cut-out portion with a hard molten resin material of the same or similar material as the mounting base, After cooling, the mold molding die is released and a portion of the inside weatherstrip is removed. A method for forming the bent portion of an inside weatherstrip, characterized by having the following:

5. A method for forming the folded portion of an inside weatherstrip as described in claim 4, During the extrusion molding process, a strip-shaped contact lip portion is formed together with the lower part of the mounting base, A notch is formed along the longitudinal direction by punching at a position corresponding to the notched portion of the mounting base of the contact lip portion. A method for forming a bent portion of an inside weatherstrip, characterized in that, during the molding process, a contact lip portion is formed in the notch portion at the same position as the longitudinal formation area of ​​the notch forming portion of the mounting base and with substantially the same length as the notch forming portion, and a rib is formed along the longitudinal direction on the outer surface of the contact lip portion on the door glass side.

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