Weatherstrip and manufacturing method thereof

Abstract

To provide a weather strip along a curved part without damaging appearance in particular, and a manufacturing method for the same.SOLUTION: A weather strip 30 includes: a fitting base part 21 which is formed on a sliding door 1 opening / closing an opening of an automobile, is fitted to a flange F having curved parts 1a, 1b, and is composed of a vehicle inside side wall 21a, a vehicle outside side wall 21b, and a connection wall 21c; and a hollow part 22 integrally extrusion molded with the fitting base part 21. In the curved parts 1a, 1b, a part of the fitting base part 21 is removed to form a notch part K, and the notch part K is metal-molded with a molding material into a die-molding part M. An insert 50 is embedded in the die-molding part M along shapes of the curved parts 1a, 1b. In the insert 50, a plurality of recesses 53, 54 abutted to a plurality of first pins 103a and a plurality of second pins 104a provided for dies 103, 104 are formed when die-molding.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a weatherstrip that is attached to an opening / closing body that opens and closes an opening in an automobile, such as a sliding door that moves back and forth on the body of a station wagon or minivan, or to a flange with a curved portion formed on the body on the opening side, and to a method for manufacturing the same. [Background technology]

[0002] As shown in Figures 10 and 11, in an automobile such as a station wagon that opens and closes an opening in the body with a sliding door 1 (or a back door), a weather strip 10 with a sensor inserted in a hollow portion is attached to the front end of the sliding door 1, and if a foreign object such as a part of the human body (a finger, a limb) becomes caught between the sliding door 1 and the rear end of the front door 2, the sensor detects the entrapment and outputs a corresponding electrical signal.

[0003] When attaching such a weatherstrip 10 to the sliding door 1, particularly at the beltline BL, the flange F into which the weatherstrip 10 is fitted is formed in a substantially S-shape corresponding to the shape of the sliding door 1. That is, at the front end of the sliding door 1, a curved portion 1a is formed from the beltline BL to its upper portion, which is curved in a convex shape toward the inside of the vehicle, and a curved portion 1b is formed from the beltline BL to its lower portion, which is curved in a convex shape toward the outside of the vehicle.

[0004] Therefore, it is difficult to make the extruded weatherstrip 10 conform to the curved portions 1a and 1b of the sliding door 1. In particular, if the weatherstrip 10 with the sensor does not conform to the shape of the sliding door 1, there is a risk that the detection accuracy of the sensor cannot be ensured. Therefore, it is known to cut out the portions of an extruded weather strip 10 that correspond to the curved portions 1a and 1b of the sliding door 1, and then mold it to conform to the curved portions 1a and 1b (for example, Patent Document 1 and Patent Document 2).

[0005] On the other hand, it is known that weather strips are molded with inserts embedded in the corners of the outer peripheral edge of automobile doors (for example, Patent Document 3), so it is also possible to embed inserts in the curved portions 1a and 1b of the sliding door 1. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2017-203661 [Patent Document 2] Japanese Patent Application Laid-Open No. 2005-075085 [Patent Document 3] Japanese Utility Model Application Publication No. 5-000517 Summary of the Invention [Problem to be solved by the invention]

[0007] However, as in Patent Document 1, when the curved portion of the weatherstrip is cut out and then molded to provide a curved retaining portion, although the strength is greater than that of the extruded portion of the weatherstrip, the strength may still be insufficient. Furthermore, as in Patent Document 2, in an extruded weatherstrip, a core wire is embedded in the flange mounting portion, but in the curved portion, if a portion of the mounting portion where the core wire is embedded (the outer side wall of the vehicle) is cut out and then molded to form a curved retaining portion, the strength may be lower than that of the extruded portion of the weatherstrip. Furthermore, when embedding an insert as described in Patent Document 3 in the curved portion of a weatherstrip in order to further improve strength, there is a problem in that even if the insert is positioned within the cavity of the mold that forms the molded portion, the insert may become misaligned due to the pressure applied when the molding material is injected. As a result, although embedding the insert improves strength, misalignment of the insert deteriorates the appearance of the weatherstrip and, in the case of weatherstrips equipped with sensors, may also reduce the sensor's detection function.

[0008] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a weatherstrip that follows a curved portion without deteriorating the appearance, and a method for manufacturing the same. [Means for solving the problem]

[0009] In order to achieve the above object, the weatherstrip of the present invention comprises an attachment base (21) which is attached to a flange (F) having curved portions (1a, 1b) formed on an opening / closing body (1) for opening and closing an opening of an automobile or on the body on the opening side, the attachment base (21) comprising an interior side wall (21a), an exterior side wall (21b), and connecting walls (21c) which connect both side walls (21a, 21b); The mounting base (21) has a hollow portion (22) extruded integrally therewith, A weather strip (30) in which a part (21b) of the mounting base (21) is cut away at the curved portion (1a, 1b) to form a notch (K), and the notch (K) is molded with a molding material to form a molded portion (M), An insert (50) conforming to the shape of the curved portions (1a, 1b) is embedded in the molded portion (M), and the insert (50) has: During the molding A plurality of recesses (53, 54) are formed in the mold (103, 104) to come into contact with a plurality of pins (103a, 104a) provided in the mold (103, 104). And The insert (50) has both ends (51, 52) formed as flat portions, which are inserted from the notched portion (K) to the unnotched extruded mounting base (21) and disposed on the outer surface of the outer side wall (21b). It is characterized by:

[0010] The present invention also provides an attachment base (21) attached to an opening / closing body (1) for opening and closing an opening of an automobile or to a flange (F) formed on the body on the opening side and having curved portions (1a, 1b), the attachment base (21) comprising an interior side wall (21a), an exterior side wall (21b), and a connecting wall (21c) connecting both side walls (21a, 21b); The mounting base (21) has a hollow portion (22) extruded integrally therewith, A weather strip (30) in which a part (21b) of the mounting base (21) is cut away at the curved portion (1a, 1b) to form a notch (K), and the notch (K) is molded with a molding material to form a molded portion (M), an insert (50) conforming to the shape of the curved portion (1a, 1b) is embedded in the molded portion (M), and the insert (50) has a plurality of recesses (53, 54) formed therein that come into contact with a plurality of pins (103a, 104a) provided in the mold (103, 104) during the molding process; A hollow seal portion (26) is provided on the vehicle exterior side of the extruded mounting base portion (21), The notch (K) is formed by cutting out the hollow seal portion (26) and the vehicle exterior side wall (21b) of the mounting base (21), and by the molding process, a molded hollow seal portion (26M) corresponding to the hollow seal portion (26) and a molded vehicle exterior side wall (21bM) corresponding to the vehicle exterior side wall (21b) of the mounting base (21) are formed, and the insert (50) is disposed so as to be embedded in the molded vehicle exterior side wall (21bM). It is characterized by:

[0013] In addition, the present invention is characterized in that the molded hollow seal portion (26M) has a molded inclined wall (26M1) extending obliquely from the hollow portion (22) side of the molded vehicle exterior side wall (21bM) toward the vehicle exterior, and a molded mounting wall (26M2) connected to the end of the molded inclined wall (26M1) and close to the end of the molded vehicle exterior side wall (21bM), and the molded inclined wall (26M1) is curved to follow the shape of the member with which it faces.

[0014] The present invention is also characterized in that the molded hollow seal portion (26M) has a molded inclined wall (26M1) extending obliquely from the hollow portion side of the molded vehicle exterior side wall (21bM) toward the vehicle exterior, and a molded mounting wall (26M2) connected to the end of the molded inclined wall (26M1) and close to the end of the molded vehicle exterior side wall (21bM), and a hole (CH) for attaching a clip is formed in the molded mounting wall (26M2).

[0016] The method for manufacturing a weatherstrip of the present invention is also directed to a method for manufacturing an opening / closing body (1) for opening and closing an opening in an automobile. or an attachment base (21) attached to a flange (F) having curved portions (1a, 1b) formed on the body on the opening side, and comprising an interior side wall (21a), an exterior side wall (21b), and a connecting wall (21c) connecting both side walls (21a, 21b); The mounting base (21) has a hollow portion (22) extruded integrally therewith, A method for manufacturing a weatherstrip (30) includes the steps of: cutting out a part (21b) of the mounting base (21) at the curved portion (1a, 1b) to form a notch (K); and molding the notch (K) with a molding material to form a molded portion (M), During the molding process, the weather strip (30) having the notch (K) formed therein is sandwiched between an upper mold (101) and a lower mold (102), A middle mold (103, 104) having a plurality of protruding pins (103a, 104a) is provided between the upper mold (101) and the lower mold (102), The insert (50) having a plurality of recesses (53, 54) formed along the shape of the curved portions (1a, 1b) is positioned and fixed so as to be embedded in the notch (K) with the plurality of pins (103a, 104a) of the middle mold (103, 104) abutting against the plurality of recesses (53, 54), and then molding material is poured into the mold to form the insert.

[0017] It should be noted that symbols in parentheses indicate corresponding elements or matters described in the drawings and in the detailed description to be described later. [Effects of the Invention]

[0018] According to the present invention, when attaching a weatherstrip having an extrusion-molded mounting base and hollow portion to an opening / closing body that opens and closes an opening in an automobile, or to a flange formed on the body on the opening side that also has a curved portion, a portion of the mounting base is cut away at the curved portion to form a cutout, and when the cutout is molded using a molding material to form a molded portion, an insert that conforms to the shape of the curved portion is embedded in the molded portion, which has sufficient strength compared to when the cutout portion is simply a molded portion.

[0019] In addition, the insert has multiple recesses formed therein that abut against multiple pins provided in the mold during molding, thereby increasing the fixing force of the insert and suppressing misalignment of the insert due to the pressure when the molding material is injected. This does not deteriorate the appearance of the weatherstrip. This is particularly effective in devices in which a sensor is installed in the hollow portion of the weatherstrip, and when a foreign object is caught between an opening and closing body such as a door, it detects the presence of the foreign object by detecting a corresponding change in electrical signal, as this prevents the sensor's functionality from deteriorating due to misalignment of the insert.

[0021] Furthermore, according to the present invention, both ends of the insert are flat, and the flat portions are inserted from the notched portion to the non-notched extruded mounting base portion and positioned on the exterior side of the vehicle exterior side wall. This allows both ends of the insert to be clamped between the exterior side wall of the mounting base and the middle part of the mold, further increasing the fixing force of the insert.

[0022] Furthermore, according to the present invention, a hollow seal portion is provided on the vehicle exterior side of the extruded mounting base, and the cutout portion is formed by cutting out the hollow seal portion and the vehicle exterior side wall of the mounting base. At the same time, a molded hollow seal portion corresponding to the hollow seal portion and a molded vehicle exterior side wall corresponding to the vehicle exterior side wall of the mounting base are formed by molding, and the insert is positioned so as to be embedded in the molded vehicle exterior side wall. This allows the exposed portion of the insert to be covered and hidden from the outside by the molded hollow seal portion, and does not deteriorate the appearance.

[0023] Furthermore, according to the present invention, the molded hollow seal portion is connected to the end of the molded inclined wall that extends obliquely from the hollow portion side of the molded exterior side wall toward the exterior of the vehicle, and has a molded mounting wall that is close to the end of the molded exterior side wall, and the molded inclined wall is curved to follow the shape of the member that it faces, so that the appearance is not impaired.

[0024] Furthermore, according to the present invention, the molded hollow seal portion has a molded inclined wall that extends obliquely from the hollow portion side of the molded exterior side wall toward the exterior of the vehicle, and a molded mounting wall that is connected to the end of the molded inclined wall and is close to the end of the molded exterior side wall, and holes for clip mounting are formed in the molded mounting wall, so that the weatherstrip can be firmly attached with clips at a predetermined interval rather than being attached to the opening / closing body or the body on the opening side using double-sided tape.

[0025] Furthermore, according to the method for manufacturing a weatherstrip of the present invention, during molding, the weatherstrip with the cutout formed in the extruded weatherstrip is sandwiched between an upper mold and a lower mold, and an insert that conforms to the shape of the curved portion and has multiple recesses formed therein is positioned and fixed so as to be embedded in the molded portion with the multiple pins of the middle mold abutting the multiple recesses, and then the molded material is poured in to mold the insert, which increases the fixing force of the insert and suppresses displacement of the insert due to the pressure when the molded material is injected. Furthermore, by embedding the insert, the weather strip can be attached stably to the curved portion of the flange. [Brief explanation of the drawings]

[0026] [Figure 1] 11 is an enlarged perspective view showing a state in which a weather strip according to an embodiment of the present invention is attached to the sliding door shown in FIG. 10. FIG. [Figure 2] FIG. 2 is an enlarged perspective view showing the external appearance of a main part of the weatherstrip shown in FIG. [Figure 3] 3A and 3B are diagrams showing only the insert embedded in the weather strip shown in FIG. 2, where (a) is a side view and (b) is a front view. [Figure 4] FIG. 3 is an enlarged cross-sectional view taken along the line AA in FIG. 2. [Figure 5] FIG. 3 is an enlarged cross-sectional view taken along the line BB in FIG. 2. [Figure 6] 3 is an enlarged cross-sectional view showing the mold configuration at the cross section of line BB in FIG. 2 when molding the weatherstrip according to the embodiment of the present invention. FIG. [Figure 7] 3 is an enlarged cross-sectional view showing the mold configuration taken along line CC in FIG. 2 during molding of the weatherstrip according to the embodiment of the present invention. FIG. [Figure 8] 3 is an enlarged cross-sectional view showing the mold configuration at the cross section of line DD in FIG. 2 when molding the weatherstrip according to the embodiment of the present invention. FIG. [Figure 9] FIG. 3 is an enlarged cross-sectional view taken along the line EE in FIG. 2. [Figure 10] FIG. 1 is a side view of a car that opens and closes with a sliding door. [Figure 11] FIG. 11 is an enlarged perspective view showing a state in which a weather strip according to a conventional example is attached to the sliding door shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0027] A weatherstrip 30 according to an embodiment of the present invention will be described with reference to the drawings. The weatherstrip 30 according to the embodiment of the present invention is attached to a flange F formed on the front end surface of the sliding door 1 of an automobile, which opens and closes a vehicle body opening using the sliding door 1 as shown in FIGS. 10 and 1 , so as to protrude toward the front of the vehicle body. A sensor (pressure-sensitive sensor) S is attached to the weatherstrip. The sensor S detects a foreign object, such as a human body part (a finger, a limb), being caught between the sliding door 1 and the body opening (which may be a front door 2 (a side door)) and outputs a corresponding electrical signal. The flange F, particularly at the belt line BL, is formed in a substantially S-shape to correspond to the shape of the sliding door 1. That is, the front end of the sliding door 1 is formed with a curved portion 1a that is convexly curved toward the interior of the vehicle from the belt line BL upward, and a curved portion 1b that is convexly curved toward the exterior of the vehicle from the belt line BL downward. The same parts as those in the conventional example are designated by the same reference numerals. Here, the "change in the electrical signal" includes a change due to a short circuit between the two core wires 31, 32 and a change in capacitance.

[0028] As shown in Figures 2 and 4, this weatherstrip 30 is directly attached to the flange F formed on the sliding door 1 and comprises a mounting base 21 consisting of an interior side wall 21a, an exterior side wall 21b, and a connecting wall 21c connecting both side walls 21a, 21b; a hollow portion 22 extruded integrally with the mounting base 21 and elastically contacting a foreign object such as a finger if it is present between the front end surface of the sliding door 1 and the body-side opening that the front end surface faces when the sliding door 1 is closed; and a sensor (pressure-sensitive sensor) S incorporated in the hollow portion 22 that detects the foreign object and outputs a corresponding electrical signal. The sensor (pressure-sensitive sensor) S is fixed within the hollow portion 22 so that two core wires (electrode wires (including twisted wires)) 31, 32 extending in the vertical direction (longitudinal direction) are embedded in conductive rubber-like elastic bodies 34, 35 provided with a space 33 between them. A plurality of retaining lips 24, 24 are provided on the inside of the mounting base 21, and a core material 25 with a U-shaped cross section is embedded in the mounting base 21 to increase its rigidity. Furthermore, a hollow (which may be lip-shaped) sealing portion 26 is provided on the vehicle-exterior side wall 21b of the mounting base 21.

[0029] As shown in Fig. 2, in the weatherstrip 30, a part of the mounting base 21, in this case the vehicle exterior side wall 21b, is cut out together with the hollow seal portion 26 in the portions corresponding to the curved portions 1a and 1b to form a cutout portion K, which is then molded with a molded material to form a molded portion M. In Fig. 2, the black triangle side is the molded portion, and the white triangle side is the extrusion molded portion (the same applies to Figs. 7, 8, and 9). An insert 50 is embedded in the molded portion M, as shown in FIG. 3, and conforms to the shape of the curved portions 1a and 1b.

[0030] As will be described later, the insert 50 is formed with a plurality of recesses 53, 54 that come into contact with first pins 103a and second pins 104a, respectively, provided on a first intermediate die 103 and a second intermediate die 104 of the mold 100 during molding. The multiple recesses 53, 54 consist of a first recess 53 which is set by forming a hole that penetrates in and out of the vehicle, as shown in Figures 3 and 8, and a second recess 54 which is set on the front side of the vehicle from the protrusion 55 which protrudes in the outward direction of the vehicle, as shown in Figures 3 and 7.

[0031] 3, both ends of the insert 50, i.e., the upper end 51 and the lower end 52, are flat portions. Both the upper end 51 and the lower end 52 have a width in the front-to-rear direction of the vehicle that is greater than their thickness in the interior-to-exterior direction. As shown in FIGS. 2, 5, and 6, these flat portions are inserted into the exterior side of the extruded mounting base 21 that is not cut out from the cutout K and are disposed on the exterior side surface of the exterior side wall 21b. The upper end 51 of the insert 50 is inserted from the cutout K into the exterior side of the extruded mounting base 21 above, and the lower end 52 of the insert 50 is inserted from the cutout K into the exterior side of the extruded mounting base 21 below. In addition, as shown in Figure 3, the lower end of the upper end 51 and the upper end of the lower end 52 each have small interior protrusions 58 that protrude toward the interior of the vehicle, so that when the insert 50 is inserted, these come into contact with the end faces of the mounting base 21 that are not notched, and can serve as stoppers to prevent the insert 50 from being inserted too far (not shown).

[0032] In addition, in the cutout portion K, a molded hollow seal portion 26M corresponding to the extruded hollow seal portion 26 and a molded outer-vehicle side wall 21bM corresponding to the extruded outer-vehicle side wall 21b of the mounting base 21 are formed by mold molding, which will be described later in Figures 7 and 8, and the molded hollow seal portion 26M has a molded inclined wall 26M1 extending inclinedly from the hollow portion 22 side of the molded outer-vehicle side wall 21bM toward the outside of the vehicle, and a molded mounting wall 26M2 that is connected (connected) to the end of the molded inclined wall 26M1 and is close to the end of the molded outer-vehicle side wall 21bM. The insert 50 embedded in the molded portion M is embedded in the molded exterior sidewall 21bM and positioned so that a portion of it is exposed. More specifically, the interior flat portion 56 and the first recess 53, which form the interior side of the insert 50 and will be described later with reference to Figures 7 and 8, are exposed from the molded portion M, but because the molded exterior sidewall 21bM of the weatherstrip 30 is attached to the flange F, it is covered by the flange F and the exposed portion is not visible. In addition, the second recess 54 and protrusion 55, which are the exterior side of the insert 50, as will be described later in Figure 7, are also exposed from the molded portion M, but because the molded hollow seal portion 26M is positioned on the exterior side of the vehicle, the exposed portions are covered by the molded hollow seal portion 26M and cannot be seen visually. As described above, the insert 50 is configured so that a portion is exposed on both the interior and exterior surfaces of the vehicle, but the exposed portion is not visible to the naked eye, and the appearance is not impaired.

[0033] 7, holes CH for attaching clips can be formed at predetermined intervals in the molded mounting wall 26M2 by abutting the protruding pins 105a of the third middle die 105 against the second middle die 104. Also, as shown in FIGS. 7 and 8, middle die removal holes NH for removing the second middle die 104 are formed over the entire length of the molded portion M in the molded mounting wall 26M2 or the molded exterior side wall 21bM. 9, the molded inclined wall 26M1 can be curved to fit the shape of the door 1 that the molded inclined wall 26M1 faces. For example, as shown in FIG. 1, recesses 3a and 3b may be formed around the door handle knob 3, but the shape of the molded inclined wall 26M1 can be made to conform to the recess shape as shown in FIGS. 1 and 9 to prevent deterioration of the appearance.

[0034] The weather strip 30 with the sensor thus constructed is manufactured by molding in the following manner. First, as shown in Fig. 1, when the extruded weatherstrip with sensor 30 is attached to the sliding door 1, the outer side wall 21b of the mounting base 21 is cut away together with the hollow seal portion 26 to form a notch K in the portion facing the curved portions 1a, 1b of the sliding door 1, as shown in Fig. 2. At this time, as shown in Fig. 5, mounting wall notches 26K are formed in the mounting wall 26a of the hollow seal portion 26 that is not cut away, in order to enable both ends of the second intermediate mold 104 to be removed from the mold.

[0035] Next, as shown in Figures 6, 7, and 8, the weatherstrip 30 with the cutout portion K formed therein is sandwiched between the upper mold 101 and the lower mold 102 of the mold 100 and set between them. The mold 100 has an upper side 101 and a lower side 102, and a first intermediate mold 103, a second intermediate mold 104, and a third intermediate mold 105 provided therebetween. For ease of explanation, in Figures 6, 7, and 8, the four directions of the interior, exterior, front, and rear of the vehicle when the weatherstrip 30 is attached to the vehicle body are also indicated in parentheses, corresponding to the four directions of the top, bottom, left, and right of the mold. As shown in Fig. 6, both end portions of the first intermediate die 103 are inserted inside the mounting base 21 so as to contact the interior side wall 21a, connecting wall 21c, and exterior side wall 21b of the mounting base 21, and support the mounting base 21 of the weatherstrip 30 within the mold 100. Also, as shown in Figs. 7 and 8, the rest of the first intermediate die 103 supports the mounting base 21 of the weatherstrip 30 within the mold 100, and the underside of the first intermediate die 103 forms part of the cavity for molding the exterior side wall 21bM of the molded portion of the weatherstrip 30. As shown in Figure 6, both ends of the second intermediate mold 104 are inserted so as to contact the inner surface of the hollow seal portion 26, supporting the hollow seal portion 26 of the weatherstrip 30 within the mold 100 and pressing the lower end 52 of the insert 50, as mentioned above, against the exterior side wall 21b to fix it. In addition, as shown in Figures 7 and 8, the areas of the second intermediate die 104 other than both end portions are inserted between the first intermediate die 103 and the third intermediate die 105 as part of a cavity for forming a molded portion (molded hollow seal portion 26M) that is connected to the extruded hollow seal portion 26. As shown in Fig. 8, the first intermediate die 103 is formed with first pins 103a that protrude downward at intervals, i.e., toward the second intermediate die 104 side, and as shown in Fig. 7, the second intermediate die 104 is formed with second pins 104a that protrude upward at intervals, i.e., toward the first intermediate die 103 side. As shown in Fig. 7, the third intermediate die 105 is formed with protruding pins 105a that protrude toward the second intermediate die 104 side at intervals.

[0036] Next, the insert 50, which has a shape that matches the shape of the curved portions 1a and 1b, is set in the notch K in the cavity in a position that matches the shape of the curved portions 1a and 1b. At this time, the upper end 51 of the insert 50 is inserted from the notch K in the cavity onto the outer side of the upper extruded mounting base 21, as shown in Figures 5 and 6, and pressed against the outer side of the vehicle exterior surface of the outer side wall 21b by the upper surface of the second intermediate mold 104, and the lower end 52 is similarly inserted from the notch K in the cavity onto the outer side of the lower extruded mounting base 21, as shown in Figures 5 and 6, and pressed against the outer side of the vehicle exterior surface of the outer side wall 21b. Then, as shown in Figure 8, the first pin 103a of the first intermediate die 103 is brought into contact with the first recess 53 formed in the insert 50, and as shown in Figure 7, the second pin 104a of the second intermediate die 104 is brought into contact with the second recess 54 formed in the insert 50, and the insert 50 is positioned and fixed in the recess K in the cavity. In this way, the insert 50 can be positioned and fixed in the left-right direction within the cavity of the mold 100 by the abutment in two directions (different directions) shown in Figures 7 and 8. Also, as shown in Figures 7 and 8, the interior-facing flat portion 56 of the insert 50 abuts against the lower surface of the first intermediate die 103, and the exterior-facing small protrusion 57 of the insert 50 shown in Figure 3 abuts against the upper surface of the second intermediate die 104 (not shown). In this way, the insert 50 can be positioned and fixed in the up-down direction within the cavity of the mold 100 by the abutment in two directions (different directions) shown in Figures 7, 8, and 3. As described above, since the insert 50 can be positioned and fixed in four directions (up, down, left, and right), it is possible to prevent the insert 50 from shifting position even when subjected to pressure when the molding material is injected. Also, as shown in Figures 7 and 8, the insert 50 is provided with a front protrusion 59 that protrudes diagonally toward the front and outside of the vehicle. The front protrusion 59 is embedded without being exposed from the molding portion M by not abutting against the first intermediate mold 103 or the second intermediate mold 104, thereby improving the bonding strength of the insert 50 to the molding portion M. 7, center die punching holes NH are provided continuously over the entire length of the molded portion M to remove the second center die 104 from the molded hollow seal portion 26M. In addition to the center die punching holes NH, holes CH for attaching clips (not shown) that secure the weatherstrip 30 to the sliding door 1 are provided at predetermined intervals. When the molded material is poured into the mold 100 with the protruding pins 105a of the third center die 105 and the second center die 104 abutting against each other and then released from the mold 100, the molded portion mounting wall 26M2 is formed, and the clip mounting holes CH can also be formed in the molded portion mounting wall 26M2.

[0037] When the molding material is poured into the mold 100 as described above and released from the mold 100, the weatherstrip 30 is produced, as shown in Figure 2, in which the cutout portion K is molded with the molding material to form the molded portion M.

[0038] According to this manufacturing method of the weatherstrip 30, during molding, the insert 50 is fixed in place by abutting against the first pin 103a and the second pin 104a provided on the first intermediate mold 103 and the second intermediate mold 104, as shown in Figure 6. Furthermore, when the second intermediate mold 104 is inserted into the hollow seal portion 26, the upper end 51 and the lower end 52 of the insert 50 are sandwiched and fixed between the second intermediate mold 104 and the exterior mounting base 21, thereby increasing the fixing force of the insert 50 within the cavity of the mold 100 and suppressing displacement of the insert 50 due to the pressure when the molding material is injected. This prevents the appearance of the weatherstrip 30 from being deteriorated, and also prevents the performance of the sensor S from being reduced due to misalignment of the insert 50.

[0039] At this time, the insert 50 comes into contact with the first pin 103a and the second pin 104a provided on the first intermediate die 103 and the second intermediate die 104, so that the molding material does not flow to the contact area of ​​the insert 50, and therefore the area is exposed, but the exposed area is covered and hidden by the molding hollow seal portion 26M, so the appearance is not deteriorated.

[0040] The insert 50 and the molding material may be made of similar flexible materials. For example, the insert 50 may be made of PP and the molding material may be made of TPO. This allows the insert 50 and the molded material to adhere together, creating a sense of unity and facilitating handling of the sensor-equipped weatherstrip 30. The hardness is preferably in the soft range of JISA 20-90, more preferably JISA 40-90. Hardness below JISA 40 can cause concerns about the functionality of the molded portion (e.g., ease of assembly to the vehicle body), while hardness below JISA 20 results in insufficient functionality. Furthermore, the insert 50 is sometimes wrapped in a different resin material (e.g., adhesive) to prevent water from seeping into the internal electrical components and wiring from the outside. However, if this different resin material is as soft as the molded material or softer (lower hardness), it does not impede the aforementioned sense of unity.

[0041] The insert 50 and the molding material can also be made of compatible materials. This also creates a sense of unity between the insert 50 and the molded portion M, making the sensor-equipped weatherstrip 30 easier to handle. Furthermore, even if it is necessary to encase the insert 50 in a different resin material (adhesive) to further prevent water intrusion, compatibility between the insert 50 and the molding material makes it easy to select an adhesive that adheres well to both materials. Furthermore, if the two materials are homogeneous enough to fuse together, the insert 50 can adhere tightly during molding without the use of adhesive, thereby preventing water from penetrating into the internal electrical components and wiring from the outside without the use of adhesive. In a strict sense, compatibility means that the two materials are homogeneous enough to fuse together. For example, if one material is TPO, polypropylene, polyethylene, TPO, or various TPEs containing olefin-based resins are acceptable. Examples of various TPEs containing olefin-based resins include styrene-based thermoplastic elastomers (TPS). When one of the materials is TPS, if it contains an olefin resin, a material similar to that for TPO can be selected as being compatible, particularly homogeneous enough to be welded or fused.

[0042] In this embodiment, the first recesses 53 of the insert 50 that abut against the first pins 103a provided on the first intermediate mold 103 are provided at three locations spaced apart in the vertical direction (longitudinal direction) of the insert 50, and the second recesses 54 of the insert 50 that abut against the second pins 104a provided on the second intermediate mold 104 are provided at eight locations spaced apart in the vertical direction (longitudinal direction) of the insert 50. However, the number of fixing locations and the fixing method are not particularly limited as long as the first pins 103a and second pins 104a formed on the intermediate mold abut and fix the insert 50 to the recesses on the insert 50 so that the insert 50 does not shift position during molding.

[0043] In addition, in the embodiment of the present invention, an example has been described in which the weather strip 30 is attached to the curved portions 1a, 1b on the sliding door 1 side of a vehicle in which the sliding door 1 moves in the forward and backward directions, but the weather strip 30 may also be attached to a curved portion formed in an opening on the body side. The weather strip 30 can also be applied to the curved portion of a back door or a curved portion of a sunroof. Furthermore, although the example described above uses a weatherstrip 30 equipped with a sensor for detecting foreign objects, in which the sensor is integrated into the hollow portion, the present invention can also be applied to cases in which the sensor is not integrated into the hollow portion and the weatherstrip is inserted later and attached along the curved portion. [Explanation of symbols]

[0044] 1 sliding door 1a, 1b Curved portion 2. Front door 3 Door handle knob 3a, 3b depression 10 Weatherstrip 21 Mounting base 21a Inside side wall 21b Outside side wall 21bM molded car outer side wall 21c Connecting wall 22 Hollow part 24 Retaining Lip 25 Core material 26 Hollow seal part 26a Mounting wall 26K Mounting wall cutout 26M molded hollow seal part 26M1 molded inclined wall 26M2 molded mounting wall 30 Weatherstrip 31,32 Core wire 33 Space section 34,35 Conductive rubber-like elastomer 50 inserts 51 Upper end 52 Bottom end 53 First recess (recess) 54 Second recess (recess) 55 Protrusion 56 Flat surface inside the vehicle 57 Small protrusion on the outside of the vehicle 58 Small protrusion on the inside of the car 59 Front protrusion 100 molds 101 Upper mold 102 Lower mold 103 1st medium size 103a 1st pin 104 2nd medium size 104a 2nd pin 105 3rd medium size 105a Protruding pin BL Belt Line CH Clip mounting hole F flange K Notch M type molding part NH Medium punch hole S sensor (pressure sensor)

Claims

1. an attachment base that is attached to an opening / closing body that opens and closes an opening of an automobile or to a flange having a curved portion formed on the body on the opening side, and that includes a connecting wall that connects the vehicle interior side wall, the vehicle exterior side wall, and both side walls; A hollow portion is extruded integrally with the mounting base, A weather strip in which a part of the mounting base is cut away at the curved portion to form a notch, and the notch is molded with a molding material to form a molded portion, an insert that conforms to the shape of the curved portion is embedded in the molded portion, and the insert has a plurality of recesses formed therein that come into contact with a plurality of pins that are provided in the mold during molding; A weatherstrip characterized in that both ends of the insert are flat portions, and these flat portions are inserted from the notched portion to the unnotched side of the extruded mounting base portion and positioned on the exterior surface of the exterior side wall of the vehicle.

2. An attachment base that is attached to an opening / closing body that opens and closes an opening of an automobile or to a flange that has a curved portion formed on the body on the opening side, and that consists of a connecting wall that connects the inside side wall, the outside side wall, and both side walls; A hollow portion is extruded integrally with the mounting base, A weather strip in which a part of the mounting base is cut away at the curved portion to form a notch, and the notch is molded with a molding material to form a molded portion, an insert that conforms to the shape of the curved portion is embedded in the molded portion, and the insert has a plurality of recesses formed therein that come into contact with a plurality of pins that are provided in the mold during molding; a hollow seal portion is provided on the vehicle exterior side of the extruded mounting base; a weatherstrip characterized in that the cutout portion is formed by cutting out the hollow seal portion and the vehicle exterior side wall of the mounting base, and a molded hollow seal portion corresponding to the hollow seal portion and a molded vehicle exterior side wall corresponding to the vehicle exterior side wall of the mounting base are formed by the mold molding, and the insert is positioned so as to be embedded in the molded vehicle exterior side wall.

3. 3. The weatherstrip according to claim 2, wherein the molded hollow seal portion includes a molded inclined wall extending obliquely from the hollow portion side of the molded exterior side wall toward the exterior of the vehicle, and a molded mounting wall connected to an end of the molded inclined wall and located close to the end of the molded exterior side wall, and the molded inclined wall is curved to follow the shape of the member that it faces.

4. 4. The weatherstrip according to claim 2, wherein the molded hollow seal portion has a molded inclined wall extending obliquely from the hollow portion side of the molded exterior side wall toward the exterior of the vehicle, and a molded mounting wall connected to an end of the molded inclined wall and adjacent to the end of the molded exterior side wall, and wherein a hole for attaching a clip is formed in the molded mounting wall.

5. an attachment base that is attached to an opening / closing body that opens and closes an opening of an automobile or to a flange having a curved portion formed on the body on the opening side, and that includes a connecting wall that connects the vehicle interior side wall, the vehicle exterior side wall, and both side walls; A hollow portion is extruded integrally with the mounting base, A method for manufacturing a weatherstrip, comprising: forming a notch at the curved portion by removing a portion of the mounting base; and forming the notch using a molding material into a molded portion; During the molding process, the weather strip having the notch formed therein is sandwiched between an upper mold and a lower mold, a middle die having a plurality of protruding pins formed thereon is provided between the upper die and the lower die; A method for manufacturing a weatherstrip, characterized in that an insert having a plurality of recesses formed therein and conforming to the shape of the curved portion is positioned and fixed so as to be embedded in the cutout portion with the plurality of medium-sized pins and the plurality of recesses abutting against each other, and then a molding material is poured into the mold to form the insert.

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