JP5724155B2 - Waist molding for vehicle and method for manufacturing the same - Google Patents

Description

  The present invention relates to a waist molding attached to an upper end of a door panel of a vehicle, and more particularly to a waist molding having a decorative lip at a portion facing the door panel, and a manufacturing method thereof.

  At the upper end of the door panel of the automobile, a waist molding is attached and arranged as a sliding member against the door glass. The above-mentioned waist molding is a decorative part that is attached to the flange portion at the upper end of the door panel by means of attachment means such as a clip or without using such attachment means, and a molding body having a substantially U-shaped cross section and a vehicle of the molding body It has a touch lip made of an elastic material that projects obliquely upward from the inside toward the door glass. In addition, a cushioning lip is formed at the tip of the side edge of the molding body outside the vehicle (the part facing the door panel), and it elastically contacts the door panel in the installed state, preventing rainwater and dust from entering, It is provided to absorb the variation and hide the gap between the door panel and the waist molding.

  FIG. 4A is a cross-sectional view of a conventional waist molding similar to that disclosed in Japanese Patent Application Laid-Open No. 2004-82760. The waist molding 1 extends from the molding body 11 attached so as to cover the upper flange 3 of the door panel 2 so that the touch lips 12a and 12b abut against the door glass 4. In the door panel 2, the outer panel 2a and the inner panel 2b are overlapped at the top, and the outer panel 2a is folded and stacked on the opposite side, and the whole is joined to form the flange 3, and the folded outer panel 2a The tip of the is a locking portion 7.

  The molding body 11 has an inner wall portion 11b extending from the vehicle inner side of the upper wall portion 11a covering the flange 3 from above, and an outer wall portion 11c extending downward from the vehicle outer side, and has a substantially inverted U-shaped cross section. , A core member 21 made of a roll-formed product of a metal plate having a cross-sectional shape over the entire region of the upper wall portion 11a, the inner wall portion 11b and the outer wall portion 11c, and the entire inner region of the inner wall portion 11b and the opening 5 side on the outer side of the vehicle It is comprised from the hard resin part 22 formed integrally. The touch lips 12a and 12b are made of an elastic material such as soft resin or rubber, and extend from the hard resin portion 22 so as to contact the door glass 4.

  The front end portion of the inner wall portion 11b of the molding body 11 is bent to the opening 5 side as a composite of the core material 21 and the hard resin portion 22 and protrudes to become a locking portion 11d, which is engaged with the locking portion 7 of the flange 3. It is configured. From the inner space 6 side of the inner wall portion 11 b of the molding body 11, projecting portions 13 a and 13 b made of hard resin extend so as to contact the flange 3. A decorative lip 14 extends from the boundary between the upper wall portion 11a and the inner wall portion 11b of the molding body 11 to the inside of the vehicle. A locking lip 15 extends from the inner space 6 side of the outer wall portion 11 c of the molding body 11 so as to abut on the flange 3. A piece-like buffer lip 16 extends from the folded portion 11e folded in a hook shape from the lower end portion of the outer wall portion 11c to the stepped portion 2c side of the outer panel 2a. The decorative lip 14, the locking lip 15 and the buffer lip 16 are made of an elastic material such as soft resin or rubber.

When the waist molding 1 is pushed downward from the opening 5 of the molding body 11 into the internal space 6 so as to insert the flange 3 of the door panel 2, the waist molding 1 is assembled so as to cover the flange 3 from above. In the assembled state, the locking portion 11d protruding from the molding body 11 is mechanically engaged with the locking portion 7 of the flange 3 to prevent the molding 1 from being detached. Further, the projecting portions 13a and 13b abut against the flange 3 from the inner wall portion 11b side, and support the force from the vehicle inner side. The touch lips 12a and 12b abut against the sliding door glass 4 and seal it. The buffer lip 16 is deformed by pressing and abuts against the step 2c of the outer panel 2a to perform a buffering action.

  FIG. 4B is a cross-sectional view showing a part of the waist molding disclosed in Patent Document 2 (Japanese Patent Application Laid-Open No. 2004-322957). In this waist molding 1, the buffer lip 16 extends from the lower end portion of the outer wall portion 11c of the molding body 11 into a S-shaped cross section to improve the cushioning property, and even when the gap between the waist molding 1 and the door panel 2 is large. The function to hide this is enhanced.

  However, in the waist molding 1 shown in FIGS. 4 (a) and 4 (b), the buffer lip 16 is formed in a single piece having a free end. Due to the external force, the tip portion is curled up or caught up, and functions such as cushioning and gap concealment cannot be fully exhibited, and an excellent appearance cannot be obtained.

JP2004-82760 JP 2004-322957 A

  The present invention has been made in view of such conventional problems, and the buffer lip is not swollen or caught by a variation in mounting of the molding or an external force at the time of mounting. It is an object of the present invention to provide a vehicular waist molding that can sufficiently exhibit a function of a buffering lip such as concealing and having an excellent appearance, and an efficient manufacturing method thereof.

The present invention provides the following waist molding for vehicles and a method for manufacturing the same.
(1) A waist molding assembled to the upper flange of the door panel,
A molding body in which the inner wall portion extends from the vehicle inner side of the upper wall portion that covers the upper flange from above, and the outer wall portion extends downward from the vehicle outer side, respectively.
A buffer lip that protrudes from the lower end of the outer wall of the molding body to elastically contact the outer panel of the door panel;
The buffer lip is
A seal lip projecting from the lower end of the outer wall so as to elastically contact the door panel during assembly;
A locking lip portion extending from the tip end portion of the seal lip portion so as to be locked to a folded portion formed at a lower end portion of the outer wall portion;
The locking lip portion has a locking portion locked inside the folded portion,
In the state in which the locking lip portion is locked to the folded portion, a hollow portion is formed between the folded portion, the seal lip portion, and the locking lip portion.
(2) The seal lip portion of the buffer lip is elastically deformed from a state protruding from the lower end portion of the outer wall portion, and the tip end portion thereof is locked to a folded portion formed at the lower end portion of the outer wall portion. 1) The waist molding for vehicles as described.
(3) A method of manufacturing a waist molding to be assembled to an upper flange of a door panel,
An extrusion process for forming a sealing lip projecting from the lower end of the outer wall, and a buffering lip having a locking lip at its tip, on the molding body from which the inner wall and the outer wall extend respectively from the upper wall;
Including a shaping step of elastically deforming the seal lip portion of the buffer lip of the extrusion molding material obtained from the extrusion molding step and locking the locking lip portion to the folded portion formed at the lower end portion of the outer wall portion of the molding body. A method of manufacturing a waist molding for a vehicle.
(4) The extrusion molding step is a method according to (3) above, wherein the core material obtained by roll-molding a metal plate is supplied to an extrusion molding machine to extrude the molten resin to form a resin portion and a buffer lip.
(5) In the shaping step, when the extrusion molding material is pulled out through the shaping machine, the sealing lip portion of the buffer lip is elastically deformed by the guide material provided in the shaping machine, and the locking lip portion is formed at the lower end portion of the outer wall portion. The method according to (3) or (4) above, wherein the method is adapted to lock the folded portion.

  The waist molding for a vehicle according to the present invention is a waist molding that is attached to the upper end of the door panel of the vehicle, and is a decorative part that is attached to the flange portion at the upper end of the door panel by attachment means such as a clip or without using such attachment means. . The vehicle waist molding of the present invention has a molding body formed so as to cover the flange portion of the door panel from above, and a buffering lip provided at a portion facing the door panel. You may have the touch lip which consists of an elastic material which protrudes toward a door glass, the fixing means etc. which fix a molding main body to a door panel.

  The vehicle door panel to which the vehicle waist molding of the present invention is attached has an upper flange formed by overlapping an outer panel and an inner panel at the upper part. The waist molding has a molding body and a buffer lip that are assembled so as to cover the upper end of the upper flange from above. The molding body is configured such that the inner wall portion extends from the vehicle inner side of the upper wall portion covering the upper flange from above, and the outer wall portion extends downward from the vehicle outer side. The molding body is preferably formed of a long material made of a hard material such as resin or metal, and a soft resin portion such as a lip or a buffer portion may be integrated with the long material.

  The buffer lip is configured to protrude from the lower end portion of the outer wall portion of the molding body so as to elastically contact the outer panel of the door panel in the assembled state. This cushioning lip protrudes from the lower end of the outer wall so as to elastically contact the outer panel of the door panel when assembling the waist molding, and the lower end of the outer wall of the molding body from the tip of the seal lip A locking lip portion extending so as to be locked to the folded portion formed on the outer wall portion, and when the locking lip portion is locked to the folded portion of the outer wall portion, the folded portion, the seal lip portion, and the locking portion A hollow portion is formed between the lip portion and the lip portion.

The buffer lip is preferably formed of a soft resin having elasticity and shape retention, such as polyvinyl chloride, thermoplastic elastomer, and rubber. Thereby, in a state where the locking lip portion is locked to the folded portion, a hollow portion is formed between the sealing lip portion and the locking lip portion due to elasticity and shape retention. The seal lip portion of the buffer lip is elastically deformed from a state protruding from the lower end portion of the outer wall portion of the molding body, and its tip end portion is locked to a folded portion formed at the lower end portion of the outer wall portion. Even if the hollow portion is made small, a buffering lip having a good buffering and concealing function can be obtained, which is preferable. Moreover, the latching lip portion of the buffer lip can be easily latched to the folded portion with a simple structure by having a latching portion latched inside the folded portion of the outer wall portion, This larger locking force is obtained, Ru can increase the functionality of the buffer lip to maintain the hollow portion stably.

  In the manufacturing method of the waist molding according to the present invention, in the extrusion molding process, the molding main body in which the inner wall portion and the outer wall portion extend from the upper wall portion, the seal lip portion that protrudes from the lower end portion of the outer wall portion, and the tip portion thereof are locked. A buffer lip having a lip portion is formed by extrusion molding, and the buffer lip of the extruded material obtained from the extrusion process is elastically deformed in the shaping step, and the locking lip portion is formed on the outer wall portion of the molding body. A waist molding is manufactured by engaging with the folded portion formed at the lower end.

  In the extrusion molding process, it is preferable to supply a core material obtained by roll-molding a metal plate to an extrusion molding machine and extrude the molten resin to form a resin portion and a buffer lip. In this case, a roll molding machine and an extrusion molding machine are connected, a metal plate is supplied to the roll molding machine to form a core material, and this core material is supplied to the extrusion molding machine to form a buffer lip. In the shaping process, when the extrusion molding material is pulled out through the shaping machine, the sealing lip portion of the buffer lip is elastically deformed by the guide material provided in the shaping machine, and the locking lip portion is formed at the lower end portion of the outer wall portion. It is preferable to lock the part. In this case, the extrusion molding machine and the shaping machine can be connected, and the extrusion molding material obtained from the extrusion molding machine can be passed through the shaping machine, whereby the elastic deformation of the seal lip portion and the locking lip portion can be locked.

  The vehicle waist molding manufactured in this way is assembled to the upper flange formed by overlapping the outer panel and inner panel of the vehicle door panel at the top. At that time, the upper flange covers the upper flange of the molding body from above. The inner wall is assembled so that the inner wall extends downward and the outer wall extends outwardly of the vehicle. In the assembled state, the buffer lip extends from the lower end portion of the outer wall portion of the molding body and elastically contacts the outer panel of the door panel. At this time, the seal lip portion of the buffer lip protrudes from the lower end portion of the outer wall portion and elastically contacts the outer panel of the door panel, and the locking lip portion extends from the front end portion thereof to the folded portion formed at the lower end portion of the outer wall portion. In this state, a hollow portion is formed between the folded portion, the seal lip portion, and the locking lip portion.

  When the vehicle waist molding is assembled, the sealing lip of the buffer lip is in elastic contact with the outer panel of the door panel, and the locking lip extending from the tip of the cushion lip is locked to the folding part. Since the hollow portion is formed between the portion and the locking lip portion, the seal lip portion extending from the lower end portion of the outer wall portion of the molding body elastically contacts the outer panel of the door panel. At this time, the hollow portion is deformed by the elastic deformation of the buffer lip, and the variation in the gap between the lower end portion of the outer wall portion of the molding body and the outer panel of the door panel is absorbed. The seal lip at the base end of the buffer lip is fixed to the lower end of the outer wall, and the locking lip extending from the tip is fixed to the folded part. It keeps an excellent appearance without being caught.

The vehicle waist molding according to the present invention is configured such that a buffer lip protruding so as to elastically contact the outer panel of the door panel from the lower end portion of the outer wall portion of the molding body covering the upper flange of the vehicle door panel from above is elastically contacted to the door panel. A seal lip portion protruding from the lower end portion of the outer wall portion, and a locking lip portion extending from the tip end portion of the seal lip portion so as to be locked to a folded portion formed at the lower end portion of the outer wall portion, The locking lip portion has a locking portion that is locked inside the folded portion, and when the locking lip portion is locked to the folded portion, the folded portion, the seal lip portion, and the locking lip portion Since a hollow part is formed between them, the buffer lip will not be swollen or caught due to variations during mounting of the molding or external force during mounting.蔽 the function of the buffer lip, such as can be sufficiently exhibited, it obtained excellent appearance.

  The manufacturing method of a waist molding for a vehicle according to the present invention includes forming a sealing lip portion protruding from a lower end portion of an outer wall portion and a buffer lip having a locking lip portion at a tip portion of the molding body in an extrusion molding process. Since the sealing lip portion of the buffer lip of the extrusion molding material is elastically deformed in the process and the locking lip portion is locked to the folded portion formed at the lower end portion of the outer wall portion of the molding body, the above-described vehicle waist Molding can be manufactured efficiently.

Fig.1 (a) is sectional drawing of the waist molding of embodiment, (b) is sectional drawing before shaping. FIG. 2 is a flowchart showing a method of manufacturing the waist molding according to the embodiment. 3A is a view taken along the line AA in FIG. 2, FIG. 3B is a view taken along the line BB, FIG. 3C is a view taken along the line C-C, and FIG. . 4A is a cross-sectional view of a conventional waist molding, and FIG. 4B is a cross-sectional view of another conventional waist molding.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A shows a cross-sectional view before assembling the waist molding of the embodiment, and FIG. 1B shows a cross-sectional view before shaping thereof. Is attached.

  The basic configuration of the waist molding in FIG. 1 is almost the same as that in FIG. That is, the waist molding 1 extends from the molding body 11 attached so as to cover the upper flange 3 of the door panel 2 from above so that the touch lips 12 a and 12 b abut against the door glass 4. In the door panel 2, the outer panel 2a and the inner panel 2b are overlapped at the top, and the outer panel 2a is folded and stacked on the opposite side, and the whole is joined to form the flange 3, and the folded outer panel 2a The tip of the is a locking portion 7.

  The molding body 11 has an inner wall portion 11b extending from the vehicle inner side of the upper wall portion 11a covering the flange 3 from above, and an outer wall portion 11c extending downward from the vehicle outer side, and has a substantially inverted U-shaped cross section. The core member 21 made of a roll-formed product of a metal plate having a cross-sectional shape over the entire area of the upper wall portion 11a, the inner wall portion 11b and the outer wall portion 11c, and the entire outer peripheral portion of the core member 21 and the opening on the vehicle outer side of the inner wall portion 11b. It is comprised from the hard resin part 22 integrally formed in the part 5 side. The touch lips 12a and 12b are made of an elastic material such as soft resin or rubber, and extend from the hard resin portion 22 so as to contact the door glass 4.

The front end portion of the inner wall portion 11b of the molding body 11 is bent to the opening 5 side as a composite of the core material 21 and the hard resin portion 22 and protrudes to become a locking portion 11d, which is engaged with the locking portion 7 of the flange 3. It is configured. From the inner space 6 side of the inner wall portion 11 b of the molding body 11, projecting portions 13 a and 13 b made of hard resin extend so as to contact the flange 3. A decorative lip 14 extends from the boundary between the upper wall portion 11a and the inner wall portion 11b of the molding body 11 to the inside of the vehicle. A locking lip 15 extends from the inner space 6 side of the outer wall portion 11 c of the molding body 11 so as to abut on the flange 3. A folded portion 11e is formed that is folded back from the lower end portion of the outer wall portion 11c, and the buffer lip 16 protruding from the lower end portion of the outer wall portion 11c extends so as to elastically contact the step portion 2c of the outer panel 2a. . The decorative lip 14, the locking lip 15 and the buffer lip 16 are made of an elastic material such as soft resin or rubber.

  The cushioning lip 16 is formed from a sealing lip portion 16a protruding from the lower end portion of the outer wall portion 11c so as to elastically contact the outer panel 2a of the door panel 2 when the waist molding 1 is assembled, and a tip end portion of the sealing lip portion 16a. 11 has an engaging lip portion 16b extending in a curved shape so as to be engaged with a folded portion 11e formed at the lower end portion of the outer wall portion 11c. A locking portion 16c that is locked to the folded portion 11e of the outer wall portion 11c is formed in a bent shape at the distal end portion of the locking lip portion 16b. The locking lip portion 16b is formed to be thicker than the seal lip portion 16a, and the locking portion 16c is configured to be fitted and locked to the folded portion 11e. When the locking portion 16c is locked to the folded portion 11e, the hollow portion 8 is formed between the folded portion 11e and the seal lip portion 16a and the locking lip portion 16b.

  As shown in FIG. 1B, the buffer lip 16 is molded in a state where the seal lip portion 16a and the locking lip portion 16b protrude from the lower end portion of the outer wall portion 11c of the molding body 11, As shown in FIG. 1 (a), the locking portion 16c of the locking lip portion 16b is locked to the folded portion 11e. In a state where the locking portion 16c is locked, the seal lip portion 16a and the locking lip portion 16b are formed with a hollow portion 8 between the folded portion 11e due to their elasticity and shape retention, and the outer panel of the door panel 2 is formed. The step 2c of 2a is pressed to perform a buffering action.

  FIG. 2 is a flowchart showing a method of manufacturing the waist molding according to the embodiment, in which 31 is an uncoiler, 32 is a roll molding machine, 33 is an extrusion molding machine, 34 is a cooling water tank, 35 is a shaping machine, 36 is a take-up machine, 37 Is a cutting machine, and 38 is a delivery machine. In the manufacturing method of FIG. 2, the metal plate 23 is sent out from the uncoiler 31 and roll forming is performed by the roll forming machine 32 as a roll forming step, and the core having a cross-sectional shape in which the inner wall portion 11b and the outer wall portion 11c extend from the upper wall portion 11a. The material 21 is formed.

  The core material 21 thus molded is supplied to the extruder 33 as an extrusion molding process, and the molten resin is extruded to perform extrusion molding. The hard resin portion 22 is formed on the upper wall portion 11a, the inner wall portion 11b, and the outer wall portion 11c. An extruded material 25 having the touch lips 12a and 12b, the protrusions 13a and 13b, the decorative lip 14, the locking lip 15 and the buffer lip 16 is formed. At this time, as shown in FIG. 1B, the buffer lip 16 is formed in a state before shaping in which the seal lip portion 16 a and the locking lip portion 16 b protrude from the lower end portion of the outer wall portion 11 c of the molding body 11. The extrusion molding material 25 is cooled by passing through the cooling water tank 34 and is cured in a state before shaping.

  The extrusion molding material 25 thus obtained is passed through the shaping machine 35 as a shaping process, and the elastic deformation of the seal lip portion 16a and the locking lip portion 16b are locked as shaping of the buffer lip 16. As shown in FIG. 3 (a), the extruded material 25 is in the state of FIG. 1 (b) as shown in FIG. 3 (a). However, while passing through the shaping machine 35, the extruded material 25 is in FIG. As shown in FIG. 4, the seal lip portion 16a is elastically deformed upward by the guide member 41 extending in the lateral direction. At the CC position, as shown in FIG. 3C, the seal lip portion 16a is elastically deformed obliquely upward by a guide member 42 extending obliquely upward on the folded portion 11e side. At the DD position, as shown in FIG. 3 (d), the locking lip portion 16b is elastically deformed downward by a guide member 43a having a tip extending in the lateral direction extending in the lateral direction on the folded portion 11e side. The portion 16c is fitted into the folded portion 11e to be locked. At this time, the seal lip portion 16a is held by the guide material 43b extending in the lateral direction and the guide material 43c extending in the obliquely upward direction, and the elastically deformed state is maintained.

  Since the extrusion molding material 25 obtained in this way is shaped into the cross-sectional shape shown in FIG.3 (d), the same cross-sectional shape as after the shaping of Fig.1 (a) is obtained. The extrusion molding material 25 is taken up by a take-up machine 36 and cut into a predetermined length by a cutting machine 37 to produce a waist molding 1 and taken out from a delivery machine 38.

  The vehicle waist molding 1 manufactured in this way is assembled to the upper flange 3 formed by overlapping the outer panel 2a and the inner panel 2b of the vehicle door panel 2 at the top, as in FIG. The upper flange 3 is assembled so that the upper wall portion 11a of the molding body 11 covers from above, the inner wall portion 11b extends toward the vehicle inner side, and the outer wall portion 11c extends downward toward the vehicle outer side. In the assembled state, the buffer lip 16 extends from the lower end portion of the outer wall portion 11 c of the molding body 11, and the seal lip portion 16 a elastically contacts the outer panel 2 a of the door panel 2. At this time, the seal lip portion 16a of the buffer lip 16 protrudes from the lower end portion of the outer wall portion 11c and comes into elastic contact with the outer panel 2a of the door panel 2, and the locking portion 16c of the locking lip portion 16b extending from the front end portion thereof is the outer wall portion. The folded portion 11e formed at the lower end of 11c is engaged and locked. In this state, the hollow portion 8 is formed between the folded portion 11e and the seal lip portion 16a and the locking lip portion 16b.

  In the assembled state of the vehicle waist molding 1, as described above, the seal lip portion 16a of the buffer lip 16 is elastically contacted with the outer panel 2a of the door panel 2, and the locking lip portion 16b extending from the front end portion thereof is at the turn-up portion 11e. Since the hollow portion 8 is formed between the folded portion 11e and the seal lip portion 16a and the locking lip portion 16b in the locked state, the buffer lip 16 is formed from the lower end portion of the outer wall portion 11c of the molding body 1. The extending seal lip portion 16 a elastically contacts the outer panel 2 a of the door panel 2. At this time, the hollow portion 8 is deformed by the elastic deformation of the buffer lip 16, and the variation in the gap between the lower end portion of the outer wall portion 11c of the molding body 11 and the outer panel 2a of the door panel 2 is absorbed. The seal lip portion 16a at the base end portion of the buffer lip 16 is fixed to the lower end portion of the outer wall portion 11c, and the locking lip portion 16b extending from the distal end portion is fixed to the folded portion 11e. The cushioning lip 16 is not boiled or caught, and an excellent appearance and function are maintained.

  The present invention can be used for a waist molding that is attached to the upper end of a door panel of a vehicle as a sliding contact member with respect to a door glass, in particular, a waist molding in which a decorative lip is formed at a portion facing the door panel of the molding body, and a manufacturing method thereof.

1: Waist molding, 2: Door panel, 2a: Outer panel, 2b: Inner panel, 2c: Step part, 3: Upper flange, 4: Door glass, 5: Opening part, 6: Interior space, 7: Locking part, 8: Hollow part, 11: Molding body, 11a: Upper wall part, 11b: Inner wall part, 11c: Outer wall part, 11d: Locking part, 11e: Folded part, 12a, 12b: Touch lip, 13a, 13b: Projection part , 14: decorative lip, 15: locking lip, 16: buffering lip, 16a: sealing lip, 16b: locking lip, 16c: locking lip, 21: core material, 22: hard resin, 23: metal Plate, 25: extrusion molding material, 31: uncoiler, 32: roll molding machine, 33: extrusion molding machine, 34:
Cooling water tank, 35: shaping machine, 36: take-up machine, 37: cutting machine, 38: delivery machine, 41, 42, 43a, 43b, 43c: guide material.

Claims (5)

Waist molding that is assembled to the upper flange of the door panel,
A molding body in which the inner wall portion extends from the vehicle inner side of the upper wall portion that covers the upper flange from above, and the outer wall portion extends downward from the vehicle outer side, respectively.
A buffer lip that protrudes from the lower end of the outer wall of the molding body to elastically contact the outer panel of the door panel;
The buffer lip is
A seal lip projecting from the lower end of the outer wall so as to elastically contact the door panel during assembly;
A locking lip portion extending from the tip end portion of the seal lip portion so as to be locked to a folded portion formed at a lower end portion of the outer wall portion;
The locking lip portion has a locking portion locked inside the folded portion,
In the state in which the locking lip portion is locked to the folded portion, a hollow portion is formed between the folded portion, the seal lip portion, and the locking lip portion.   The seal lip portion of the buffer lip is elastically deformed from a state of protruding from a lower end portion of the outer wall portion, and a tip portion thereof is locked to a folded portion formed at a lower end portion of the outer wall portion. Waist molding for vehicles. A method of manufacturing a waist molding to be assembled to an upper flange of a door panel,
An extrusion process for forming a sealing lip projecting from the lower end of the outer wall, and a buffering lip having a locking lip at its tip, on the molding body from which the inner wall and the outer wall extend respectively from the upper wall;
Including a shaping step of elastically deforming the seal lip portion of the buffer lip of the extrusion molding material obtained from the extrusion molding step and locking the locking lip portion to the folded portion formed at the lower end portion of the outer wall portion of the molding body. A method of manufacturing a waist molding for a vehicle. 4. The method according to claim 3 , wherein in the extrusion step, a core material obtained by roll-forming a metal plate is supplied to an extrusion molding machine, and the molten resin is extruded to form a resin portion and a buffer lip. In the shaping process, when the extrusion molding material is pulled out through the shaping machine, the sealing lip portion of the buffer lip is elastically deformed by the guide material provided in the shaping machine, and the locking lip portion is formed at the lower end portion of the outer wall portion. 5. A method according to claim 3 or 4 , wherein the method is adapted to be locked to the device.

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