JP2006205847A - Weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weather strip for an automobile capable of surely being mounted to a flange and surely preventing the noise from the flange. <P>SOLUTION: The weather strip 10 has a mounting base part 20 which is mounted to the flange 7 provided on either an opening/closing member of an opening part of the vehicle body or the peripheral edge 6 of the opening part of the vehicle body, and a seal part 30 which is integrally mounted to the mounting base part and seals between the opening/closing member of the opening part of the vehicle body and the peripheral edge of the opening part of the vehicle body. The mounting base part is made to be substantially U-shaped cross section formed from a sealant holding lip 25 extended to a vehicle outside side wall 21, a bottom wall 23, and the obliquely vehicle outside side wall direction from the bottom wall. A double-sided adhesive tape 27 is adhered to the inner surface of the vehicle outside side wall, and the inner surface of the vehicle outside side wall and the flange side surface are adhered with the double-sided adhesive tape. A sealant member 70 made of a highly foamed sponge material having specific gravity of 0.2 or less separately molded is held by the bottom wall and a sealant holding lip 25, and the tip end of the flange is embedded in the sealant member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an automotive weather strip that seals between a vehicle body opening / closing member that opens and closes a vehicle body opening, such as an automobile door, luggage, and sliding roof, and the periphery of the vehicle body opening.

Hereinafter, as shown in FIG. 3, the present invention will be described by taking as an example a seal between the automobile door 2 and the peripheral edge 6 of the vehicle body opening.
Conventionally, as shown in FIG. 5, the seal between the automobile door 2 and the vehicle body opening peripheral edge 6 includes a door weather strip 160 attached to an outer retainer 4 such as a door frame of the door 2, and a door frame. The glass run 150 is attached to the inner peripheral channel 3 and the opening trim weather strip 110 is attached to the flange 7 at the periphery 6 of the vehicle body opening.
The flange 7 is formed by an outer panel 6 that defines the periphery of the opening of the vehicle body, an inner panel 8 inside the vehicle, and the like.

  The glass run 150 accommodates the front end of the door glass 5 in a substantially U-shaped cross section composed of the vehicle outer side wall 151, the bottom wall 152, and the vehicle inner side wall 153, and the front ends thereof are the front ends of the vehicle outer side wall 151 and the vehicle inner side wall 153. The vehicle is sealed by a vehicle outer side seal lip 154 and a vehicle inner side seal lip 155 extending from the vehicle.

  The door weather strip 160 attached to the outer periphery of the door 2 includes an attachment base portion 161 and a hollow seal portion 164 and a seal lip portion 166 formed integrally on the upper portion thereof. The mounting base 161 is fitted into a retainer 4 provided on the outer periphery of the door frame and fixed to the door frame. When the door 2 is closed, the seal lip 166 abuts on the outermost side edge of the vehicle body opening peripheral edge (outer panel) 6, and between the front end of the door 2 and the vehicle outer opening peripheral edge 6 on the vehicle outer side end. Seal the gap. At that time, the hollow seal portion 164 contacts the bulging portion on the inner side of the vehicle rather than the portion where the seal lip portion 166 of the vehicle body opening periphery 6 contacts, and seals between the door 2 and the vehicle body opening periphery 6. ing.

  An opening trim weather strip 110 attached to the flange 7 is provided in the opening of the vehicle body, and the door 2 and the vehicle body opening are located further inside the vehicle than the portion where the door weather strip 160 seals the periphery 6 of the vehicle body opening. The space between the peripheral edges 6 is sealed. The opening trim weather strip 110 is attached to the flange 7 by an attachment base 120 having a substantially U-shaped cross section, and the hollow seal portion 130 contacts and swells the bulging portion 2a of the door frame. In order to hold the flange 7, the mounting base 120 is embedded with a core material 124 such as a metal insert and includes a flange holding lip.

  In addition, as shown in FIG. 6, there is a type in which this kind of opening trim weather strip 110 is attached with a double-sided adhesive tape 127 in order to securely fix it to the flange 7 (for example, see Patent Document 1). In this case, at the mounting base (trim portion) 120 of the opening trim weather strip 110, the double-sided adhesive tape 127 is attached to the outer surface of the vehicle inner side wall 122, the vehicle inner side wall 122 is along the flange 7, and the flange 7 A double-sided adhesive tape 127 is pressure-bonded to the side surface outside the vehicle.

  However, when the opening trim weather strip 110 is bonded to the flange 7 with the double-sided adhesive tape 127, the protective tape of the double-sided adhesive tape 127 is peeled off, and the double-sided adhesive tape 127 is pressure-bonded to the side surface of the flange 7. At this time, the front end of the flange 7 is applied to the vicinity of the base of the cover lip 129 and the inner side wall 122 is rotated around the base of the cover lip 129 so as to be crimped to the side surface of the flange 7. The positioning of the double-sided adhesive tape 127 takes time, and the efficiency of the operation of bonding the opening trim weather strip 110 to a predetermined position of the flange 7 is not good.

In addition, as shown in FIG. 7, when the flange 7 is mounted inside the mounting base portion 120 formed of the vehicle interior side wall 122, the bottom wall 123, and the vehicle exterior side wall 121 of the opening trim weather strip 110, A double-sided adhesive tape 127 is affixed to the inner surface of 121 and adhered to the side surface of the flange 7 (see, for example, Patent Document 2).
In this case, the flange 7 is inserted into the trim portion 120, but when the front end of the flange 7 comes into contact with the double-sided adhesive tape 127, the double-sided adhesive tape 127 is peeled off or the flange 7 is inserted deep inside the trim portion 120. The case where it disappeared occurred.

  Also, as shown in FIG. 8, the flange 7 is formed by joining the outer panel 6 defining the periphery of the vehicle body opening and the tip of the inner panel 8 inside the vehicle by welding or the like. At the periphery, the outer panel 6 and the inner panel 8 form a cavity slightly inside the flange 7. Through this cavity, wind noise, tire noise, road surface reflection noise, and other noises are transmitted over the entire periphery of the opening of the vehicle body, but the flange 7 is uneven by spot welding and the unevenness of the sheet metal at the end of the flange 7. Creates a gap. The above noise leaks from this gap and is transmitted into the vehicle.

In order to prevent noise leaking from the flange 7 and rainwater, dust, and noise entering the vehicle from the outside of the vehicle via the interior of the trim portion 120 of the opening trim weather strip 110, the interior of the trim portion 120 is highly viscous. Some also enclose a non-drying sealer 170 (see, for example, Patent Document 3).
However, since this sealer 170 is a highly viscous liquid, it takes time to handle it, and after assembling one end, after removing the trim part 120 from the flange 7 and reassembling, the sealer 170 is attached to the outer surface of the flange 7 or the trim part 120. 170 adhered and it was difficult to reassemble.
JP 2002-127841 A JP 2000-16193 A Japanese Utility Model Publication No. 54-31622

  For this reason, the present invention provides an automotive weather strip that is easy to manufacture, low in cost, can reliably attach a weather strip to the flange, and can reliably prevent noise from the flange. It is intended to do.

In order to solve the above problems, the present invention of claim 1 is a weather strip for sealing between a vehicle body opening / closing member of an automobile and a periphery of the vehicle body opening of the automobile.
The weather strip includes a mounting base that is attached to a flange provided on either the vehicle body opening / closing member or the periphery of the vehicle opening, and a body opening that is provided integrally with the mounting base and that is the other member. A seal portion that abuts the periphery of the vehicle body or the vehicle body opening / closing member and seals between the vehicle body opening / closing member and the vehicle body opening periphery, and the mounting base is inclined from the vehicle outer side wall, the bottom wall, and the bottom wall. It has a substantially J-shaped cross section formed from a sealant holding lip extending in the direction of the outer side wall. Double-sided adhesive tape is attached to the inner surface of the outer side wall of the vehicle. The bottom wall and the sealant holding lip hold a sealant member made of a highly foamed sponge material having a specific gravity of 0.2 or less, which is molded separately from the weather strip. An automobile weather strip, characterized in that the embedded tip of Nji.

  In the first aspect of the present invention, the weather strip is integrally attached to the mounting base that is attached to the flange at the leading end of either the vehicle body opening / closing member of the automobile or the periphery of the vehicle opening. A seal portion is provided that contacts the periphery of the opening or the opening / closing member of the vehicle body and seals between the opening / closing member of the vehicle opening and the periphery of the opening of the vehicle. For this reason, when the attachment base is attached to the outer periphery of the door frame or the periphery of the vehicle body opening, the seal portion comes into contact with the periphery of the vehicle body opening or the vehicle body opening / closing member when the vehicle body opening / closing member is closed. And the periphery of the opening of the vehicle body can be sealed.

  The mounting base portion has a substantially J-shaped cross section formed from a vehicle outer side wall, a bottom wall, and a sealant holding lip extending from the bottom wall toward the oblique vehicle outer side wall. For this reason, when the weather strip is attached to the flange, the tip of the flange gets over the sealant holding lip so that the double-sided adhesive tape can be pressed against the side surface of the flange, and the double-sided adhesive tape can be easily bonded to the flange. Moreover, the front-end | tip of a flange can be covered from an outer side wall, a bottom wall, and a sealant holding lip.

  A double-sided adhesive tape is attached to the inner surface of the vehicle outer side wall, and the inner surface of the vehicle outer side wall and the flange side surface are bonded by the double-sided adhesive tape. For this reason, the opening trim weather strip is securely attached to the flange even if the flange wall thickness is changed, by adhering the vehicle outer side wall to the side surface of the flange with the double-sided adhesive tape rather than holding the flange with the mounting base. Can be installed.

A sealant member made of a highly foamed sponge material having a specific gravity of 0.2 or less, formed separately from the weather strip, is held by the bottom wall and the sealant holding lip, and the tip of the flange is embedded in the sealant member. For this reason, the sealant member can prevent noise from leaking out from the gap at the tip of the flange, and can prevent rainwater, dust, and the like from entering between the weather strip and the flange from the outside of the vehicle. . Since the sealant member is a highly foamed sponge material having a specific gravity of 0.2 or less, the tip of the flange can be easily embedded, and the insertion force when the weather strip is attached can be reduced.
In addition, since the front end of the flange is embedded in the sealant member, the outer side wall can be rotated and adhered to the side surface of the flange, so that the insertion of the front end of the flange and the adhesion of the outer side wall can be ensured. can do.

  According to the second aspect of the present invention, the sealant member is formed of EPDM rubber or an olefinic thermoplastic elastomer, and is adhered to the bottom wall with an adhesive film made of an olefinic thermoplastic resin, and the tip of the flange is the sealant. It is the weather strip for motor vehicles embedded in the member.

In the second aspect of the present invention, the sealant member is formed of EPDM rubber or an olefinic thermoplastic elastomer, and is bonded to the bottom wall with an adhesive film made of an olefinic thermoplastic resin by thermal welding. For this reason, since both the sealant member and the adhesive film are olefin-based materials, they can be easily and strongly heat-welded. Further, since the adhesive is an adhesive film, the adhesive film can be continuously placed on the bottom wall simultaneously with the formation of the mounting base.
Since the tip of the flange is embedded in the sealant member, a seal between the flange and the weather strip can be ensured.

  According to the third aspect of the present invention, when the flange is inserted into the mounting base portion, the sealant holding lip slides on the sliding surface of the sealant holding lip and gets over the sealant holding lip to become the sealant member. The automotive weather strip is formed so that the double-sided adhesive tape can be brought into close contact with the side surface of the flange while the sealant member embeds the front end of the flange when the vehicle side wall is pushed from the outside.

  According to the third aspect of the present invention, when the flange is inserted into the mounting base portion, the sealant holding lip slides on the sliding surface of the sealant holding lip and gets over the sealant holding lip to become the sealant member. Buried. For this reason, when the weather strip is mounted, the tip of the flange can be guided to the inside of the mounting base by sliding the tip of the flange against the sliding surface which is the outer surface of the sealant holding lip. The mounting position of the weather strip with respect to the flange can be determined.

  The double-sided adhesive tape was formed so as to be in close contact with the side surface of the flange while the sealant member embedded the tip of the flange when the vehicle outer side wall was pushed from the vehicle outer direction. After the front end of the flange is guided to the inside of the mounting base, when the outer side wall of the weather strip is pushed toward the side of the flange from the outside of the vehicle, the front end of the flange is embedded in a sponge-like sealant member and wrapped. After the front end of the flange is embedded in the sealant member, the double-sided adhesive tape can be brought into close contact with the flange by rotating the vehicle outer side wall of the mounting base from the vehicle outer direction toward the side surface of the flange. Then, the double-sided adhesive tape is strongly pressed against the side surface of the flange, and the vehicle side wall and the flange are firmly bonded.

  According to a fourth aspect of the present invention, there is provided an automotive weather strip in which a sealant holding projection is formed in the vicinity of the inner wall of the outer side wall of the vehicle, and the sealant holding projection, the sealant holding lip and the bottom wall hold the sealant member. .

  In the present invention of claim 4, a sealant holding projection is formed in the vicinity of the bottom wall of the inner surface of the vehicle outer side wall, and the sealant member is held by the sealant holding projection, the sealant holding lip and the bottom wall. Therefore, the sealant member can be pressed and held by the sealant holding protrusion and the sealant holding lip, and the sealant member can be easily attached. In addition, when this sealant holding projection is made of hard resin, when the mounting base is mounted on the corner, the mounting base can be the center of bending along the corner, causing the weather strip to deform abnormally. There is nothing to do.

  According to the present invention of claim 5, the vehicle body opening / closing member is a door, and the weather strip is an automotive weather strip which is an opening trim weather strip.

  According to the fifth aspect of the present invention, since the vehicle body opening / closing member is a door and the weather strip is an opening trim weather strip, it is possible to reliably prevent noise from entering the vehicle through the clearance between the flanges at the periphery of the vehicle body opening. can do.

  The present invention according to claim 6 is an automotive weather strip in which the mounting base portion has a core material embedded therein, and the core material is formed to be separable or extendable within the mounting base portion.

  In the present invention of claim 6, since the core is embedded in the mounting base, and the core is formed to be separable or expandable in the mounting base, the shape holding force of the mounting base is improved by the core. Thus, the sealant member can be securely embedded at the front end of the flange, and the mounting base can be flexibly mounted at the corner along the outer periphery of the automobile door or the shape of the opening edge of the vehicle body door.

  According to a seventh aspect of the present invention, there is provided an automotive weather strip in which the mounting base is formed of a solid material or a fine foam material, and the seal portion is formed of a sponge material in a hollow shape.

According to the seventh aspect of the present invention, since the attachment base is formed of a solid material or a fine foam material, the shape can be reliably maintained when the attachment base is attached to the flange at the periphery of the automobile door or the vehicle body opening.
Since the seal portion is formed of a hollow sponge material that abuts either the automobile door or the vehicle body opening peripheral edge, the seal portion can flexibly abut along the shape of the automobile door or the vehicle body opening peripheral edge, High nature.

  According to the present invention of claim 8, the seal portion of the weather strip is formed of a sponge material of EPDM rubber or olefinic thermoplastic elastomer, and the attachment base portion is a solid material or fine foamed material of EPDM rubber or olefinic thermoplastic elastomer. It is the weather strip for motor vehicles formed by.

  In the present invention of claim 8, the seal portion of the weather strip is formed of a sponge material of EPDM rubber or olefinic thermoplastic elastomer, and the mounting base portion is a solid material or fine foamed material of EPDM rubber or olefinic thermoplastic elastomer. Therefore, the same type of material can be used for coextrusion and a product with good weather resistance can be obtained. Moreover, since it is the same olefin resin / rubber, it can be recycled without separation, and an easily recyclable product can be obtained.

  In the present invention, the inner surface of the vehicle outer side wall and the side surface of the flange are bonded by the double-sided adhesive tape, so that the opening trim weather strip can be attached to the flange even if the thickness of the flange changes. Since the tip of the flange is embedded in a sealant member made of a highly foamed sponge material with a specific gravity of 0.2 or less formed separately from the weather strip, noise leaks from the gap at the tip of the flange due to the sealant member In addition to this, rainwater, dust and the like can be prevented from entering between the weather strip and the flange from the outside of the vehicle. Since the sealant member is a highly foamed sponge material having a specific gravity of 0.2 or less, the tip of the flange can be easily embedded, and the insertion force when the weather strip is attached can be reduced.

  The embodiment of the present invention will be described by taking the opening trim weather strip 10 as an example. In addition to the opening trim weather strip 10, the present invention is applied to a weather strip used for a vehicle body opening and a vehicle body opening / closing member for closing the opening, such as a sliding roof weather strip and a luggage weather strip. Can also be used.

The present invention will be described with reference to FIGS.
FIG. 1 is a cross-sectional view taken along line AA in FIG. 4 in a state where the opening trim weather strip 10 of the present invention is attached to the vehicle body opening periphery 6 in FIG. FIG. 2 is a cross-sectional view of a portion along line AA in FIG. 4 in a state where the opening trim weather strip 10 according to another embodiment of the present invention is mounted on the vehicle body opening periphery 6 in FIG. .
FIG. 3 is a perspective view showing an attachment state to the vehicle body opening peripheral edge 6 in a state where the door of the automobile is opened. FIG. 4 is a front view of the entire opening trim weather strip 10 attached to the periphery 6 of the vehicle body opening.

  As shown in FIG. 3, a vehicle body 1 of an automobile has a vehicle body opening, and the vehicle body opening is opened and closed by a door 2 that is a vehicle body opening opening / closing member. The periphery of the vehicle body opening forms a periphery 6 of the vehicle body opening, and the periphery of the vehicle body opening 6 is welded to the distal ends of the outer panel 6 and the inner panel 8 constituting the vehicle body, and the flange 7 (FIGS. 1 and 2). See). An opening trim weather strip 10 is attached to the flange 7 for sealing between the periphery 6 of the vehicle body opening and the door 2.

The opening trim weather strip 10 is linearly formed by extrusion. As shown in FIG. 4, the straight opening trim weather strip 10 is attached to the flange 7 so as to form an annular shape along the shape of the periphery 6 of the vehicle body opening. The mounting is performed sequentially from one end of the opening trim weather strip 10 to the flange 7, and when the mounting is completed, the other end is joined to the one end. This terminal may be formed into an annular shape by being joined by the connecting portion 11.
Further, the ends of the opening trim weather strip 10 may be bonded to each other before mounting.

Next, the cross-sectional shape of the opening trim weather strip 10 will be described with reference to FIG.
The opening trim weather strip 10 is formed integrally with a trim portion (mounting base portion) 20 attached to the flange 7 and having a substantially J-shaped cross section, and abuts against the door frame bulging portion 2a of the door 2. Thus, a hollow seal portion (hollow seal portion) 30 for sealing between the door 2 and the vehicle body opening periphery 6 is provided.

The trim portion 20 has a substantially J-shaped cross section including a vehicle outer side wall 21, a sealant holding lip 25 and a bottom wall 23. In order to maintain the shape of the trim part 20 and to strengthen the force for sandwiching the sealant member 70, the core member 24 may be embedded therein.
The sealant holding lip 25 extends in a cross-sectional lip shape obliquely upward from the side end of the bottom wall 23 on the vehicle inner side, and its length is such that the sealant member 70 can be held. The outer surface of the sealant holding lip 25 may be provided with a sliding surface 25b coated with a silicon film, urethane film or the like having a low sliding resistance.

A double-sided adhesive tape 27 is attached to the inner surface of the vehicle outer side wall 21. The opening trim weather strip 10 is bonded to the side surface of the flange 7 by a double-sided adhesive tape 27, which will be described in detail later.
A hollow seal portion 30 is integrally provided on the outer surface of the vehicle outer side wall 21. The hollow seal portion 30 is formed on the outer surface of the vehicle outer side wall 21 with a hollow sponge material having a substantially elliptical cross-sectional shape. As the sponge material, sponge rubber, sponge thermoplastic elastomer or the like is used. The hollow seal portion 30 contacts the bulging portion 2a of the door frame of the door 2 when the door is closed, and seals between the door 2 and the vehicle body opening peripheral edge 6.
Instead of the hollow seal portion 30, a lip-shaped seal portion may be provided on the outer surface of the vehicle outer side wall 21 instead of the hollow shape.

When the core member 24 is provided in the trim portion 20, the core member 24 is formed of a sheet metal, a wire, or a hard synthetic resin. In the case of sheet metal or hard synthetic resin, a large number of strip-shaped bone fragments are arranged in parallel in the width direction, and the strip-shaped bone fragments are connected in a ladder shape or fishbone shape in the longitudinal direction, or a strip-shaped bone A continuous zigzag piece is used. In order to increase the flexibility of the trim part 20, it is possible to use one that separates the connecting portions of the strip-shaped bone pieces one by one or plural after the core material 24 is embedded. A continuous zigzag of strip-shaped bone fragments is also stretchable in the longitudinal direction and has flexibility.
The wire core material 24 is a so-called wire carrier type in which the wire is bent in a zigzag shape and held by a plurality of threads in the longitudinal direction.

  A sealant member 70 is inserted in the trim portion 20, that is, in a portion surrounded by the sealant holding lip 25 and the bottom wall 23 and the vehicle outer side wall 21. The sealant member 70 is formed of a highly foamed sponge having a specific gravity of 0.2 or less. The material is preferably formed of EPDM rubber or olefinic thermoplastic elastomer. As will be described later, the trim portion 20 is preferably formed of EPDM rubber or an olefin-based thermoplastic elastomer, and therefore can be firmly bonded when formed of the same kind of material. Since the specific gravity of the sealant member 70 is 0.2 or less, the sealant member 70 is highly flexible, and when the opening trim weather strip 10 is attached to the flange 7, the tip of the flange 7 is easily embedded in the sealant member 70. It is possible to reduce the insertion force and easy to install.

The sealant member 70 is bonded in the trim portion 20. For this reason, the sealant member 70 is stable in the trim portion 20, and the tip of the flange 7 can be reliably embedded in the sealant member 70.
For fixing the sealant member 70, an adhesive sheet member 72 may be used as described later, or an adhesive may be applied. Instead of the adhesive sheet member 72, the sealant member 70 may be bonded using another adhesive. Alternatively, the sealant holding lip 25, the bottom wall 23, and the vehicle outer side wall 21 may be fixed.

  In other embodiment of this invention, as shown in FIG. 2, the adhesive sheet member 72 is stuck on the inner surface of the bottom wall 23 in the trim part 20, and the sealant member 70 is heat-welded with this adhesive sheet member 72. be able to. In this case, when the opening trim weather strip 10 to be described later is manufactured, the adhesive sheet member 72 is trimmed when the adhesive sheet member 72 is adhered to the inner surface of the bottom wall 23 in a heated state after extrusion or vulcanization. It melts and adheres with the heat of the part 20. At the same time, when a separately formed sealant member 70 is pressure-bonded onto the adhesive sheet member 72, the molten adhesive sheet member 72 and the sealant member 70 are melt bonded.

  At this time, the sealant member 70 is formed of EPDM rubber or an olefinic thermoplastic elastomer, and the adhesive sheet member 72 is formed of an olefinic thermoplastic resin. Therefore, the sealant member 70 and the adhesive sheet member 72 are both olefinic. Therefore, it can be easily and strongly heat-welded. Further, since the adhesive is in the form of a film, the adhesive sheet member 72 can be continuously placed in the trim portion 20 simultaneously with the molding of the trim portion 20.

  Further, in this embodiment, a sealant holding projection 26 is formed in the vicinity of the inner wall of the vehicle outer side wall 21 and the bottom wall 23. In this case, the sealant holding projection 26, the sealant holding lip 25 and the bottom wall 23 hold the sealant member 70. As a result, the sealant member 70 can be pressed and held by the sealant holding projection 26 and the sealant holding lip 25, and the sealant member 70 can be easily mounted. The sealant holding protrusion 26 is formed integrally when the trim portion 20 is formed, and may be formed of a harder material than the portion of the vehicle outer side wall 21. When the sealant holding projection 26 is formed of a hard resin, when the trim portion 20 is mounted on the corner portion of the vehicle body opening periphery 6, the sealant holding projection 26 is bent so that the trim portion 20 bends along the corner portion. The opening trim weather strip 10 is not deformed abnormally.

  When the opening trim weather strip 10 is attached to the flange 7, the opening trim weather strip 10 is approached from the lateral direction of the flange 7, and the tip of the flange 7 comes into contact with the sliding surface 25 b of the sealant holding lip 25. Furthermore, the sliding surface 25b is slid, and the tip of the flange 7 enters the trim portion 20 beyond the sealant holding lip 25. Then, the tip of the flange 7 is embedded in the sealant member 70 and wrapped.

As described above, the front end of the flange 7 is embedded and wrapped in the sponge-like sealant member 70, and the front end of the flange 7 is embedded in the sealant member 70. The double-sided adhesive tape 27 can be brought into close contact with the flange 7 by rotating from the vehicle exterior direction toward the side surface of the flange 7. Then, the double-sided adhesive tape 27 is strongly pressed against the side surface of the flange 7 so that the vehicle outer side wall 21 and the flange 7 are firmly bonded.
In this way, the mounting position of the opening trim weather strip 10 on the flange 7 can be determined.

  Then, the sealant member 70 can prevent the noise from leaking out from the gap between the sheet metal constituting the flange 7 formed by the spot welding portion at the tip of the flange, the bending of the sheet metal, and the like. Thus, dust or the like can be prevented from entering between the opening trim weather strip 10 and the flange 7 from outside the vehicle. Since the sealant member 70 is a highly foamed sponge material having a specific gravity of 0.2 or less, the sealant member 70 is rich in flexibility, and can easily embed the tip of the flange 7 when the opening trim weather strip 10 is attached. The insertion force can be lowered.

  When the opening trim weather strip 10 is attached to the flange 7, the outer side wall 21 is pushed from the outside direction, but the length of the sealant holding lip 25 is short, and the double-sided adhesive tape 27 can be easily attached to the side surface of the flange 7 from the side direction. It can be made possible to adhere to. At this time, the tip of the flange 7 is embedded in the sponge-like sealant member 70 and wrapped. As described above, the vehicle outer side wall 21 rotates around the front end of the flange 7 and the double-sided adhesive tape 27 is strongly pressed against the side surface of the flange so that the vehicle outer side wall 21 and the flange 7 are firmly bonded. The

  In the opening trim weather strip 10, the hollow seal portion 30 is formed of a sponge material of EPDM rubber or olefin thermoplastic elastomer, and the trim portion (mounting base) 20 is a solid material of EPDM rubber or olefin thermoplastic elastomer. Once formed, a product with good weather resistance can be obtained. Further, in this case, the opening trim weather strip 10 is entirely olefin-based and can be used after being crushed together and recycled.

Next, a method for manufacturing the door opening trim weather strip 10 will be described.
This door opening trim weather strip 10 is formed by extrusion molding, and even when a metal or hard synthetic resin core material 24 is embedded in the trim portion 20, the core material 24 and the solid rubber constituting the trim portion 20 Sponge rubber constituting the hollow seal portion 30 can be integrally extruded by an extruder.

In molding of the opening trim weather strip 10, synthetic rubber and thermoplastic elastomer are used as the molding material. For example, EPDM rubber is used for synthetic rubber, and polyolefin-based elastomer is used for thermoplastic elastomer. As the sponge material, the above EPDM rubber and thermoplastic elastomer are used by foaming.
In the case of synthetic rubber, it is conveyed to a vulcanizing tank after extrusion and heated by hot air or high frequency to vulcanize and foam. In the case of a thermoplastic elastomer or soft synthetic resin, it is heated and foamed simultaneously with or after extrusion, and then cooled and solidified. Thereafter, it is cut to a predetermined length to produce an extruded part.

In order to thermally weld the sealant member 70 to the trim portion 20, an adhesive sheet member 72 that is an adhesive film made of an olefin-based thermoplastic resin is attached to the bottom wall 23. This is because if the sheet-like adhesive sheet member 72 is attached to the inner surface of the bottom wall 23 immediately after the trim portion 20 is vulcanized (immediately after extrusion in the case of a thermoplastic elastomer), the adhesive sheet is heated by the heat of vulcanization or extrusion. The member 72 melts. Further, immediately after that, when a separately formed sealant member 70 is pressed, the adhesive sheet member 72 and the bottom wall 23 are welded together with the adhesive sheet member 72 as an adhesive.
Since both the sealant member 70 and the adhesive sheet member 72 are olefin-based materials, they can be easily and strongly heat-welded. Further, since the adhesive is an adhesive film, the adhesive sheet member 72 can be continuously attached to the bottom wall 23 simultaneously with the formation of the trim portion 20.
Since the front end of the flange 7 is embedded in the sealant member 70, the seal between the flange 7 and the opening trim weather strip 10 can be ensured.
The opening trim weather strip 10 manufactured in this way is cut to a predetermined size and attached to the flange 7 at the opening edge of the vehicle body of the automobile.

FIG. 5 is a cross-sectional view of a state in which an opening trim weather strip according to an embodiment of the present invention is attached to a periphery of a vehicle body opening at a portion along line AA in FIG. 4. FIG. 5 is a cross-sectional view showing a state in which an opening trim weather strip according to another embodiment of the present invention is mounted on the periphery of the vehicle body opening at a portion along line AA in FIG. 4. It is a perspective view of the side of a car. It is a front view of the door opening trim weather strip which is an embodiment of the invention. It is sectional drawing in the state which attached the conventional door opening trim weather strip to the opening edge of a motor vehicle. It is a partial cross section figure in the state where other conventional door opening trim weather strips were attached to the opening edge of a car. It is a partial cross section figure in the state where other conventional door opening trim weather strips were attached to the opening edge of a car. It is a partial cross section figure in the state where other conventional door opening trim weather strips were attached to the opening edge of a car.

Explanation of symbols

6 Body opening edge (outer panel)
7 Flange 10 Door opening trim weather strip 20 Trim (mounting base)
DESCRIPTION OF SYMBOLS 21 Car outer side wall 22 Bottom wall 23 Car inner side wall 24 Core material 25 Sealant holding lip 26 Sealant holding protrusion 27 Double-sided adhesive tape 30 Hollow seal part 70 Sealant member 72 Adhesive sheet member

Claims (8)

In the weather strip that seals between the vehicle body opening / closing member of the automobile and the periphery of the automobile body opening of the automobile,
The weather strip includes a mounting base that is attached to a flange provided on either the vehicle body opening / closing member or the periphery of the vehicle body opening, and is integrally provided on the mounting base. A seal portion that contacts a vehicle body opening periphery or a vehicle body opening / closing member and seals between the vehicle body opening / closing member and the vehicle body opening periphery;
The mounting base portion has a substantially J-shaped cross section formed of a vehicle outer side wall, a bottom wall, and a sealant holding lip extending from the bottom wall toward the oblique vehicle outer side wall. Is adhered, and the vehicle outer side wall inner surface and the flange side surface are bonded by the double-sided adhesive tape,
A sealant member made of a highly foamed sponge material having a specific gravity of 0.2 or less, formed separately from the weather strip, is held by the bottom wall and the sealant holding lip, and the tip of the flange is embedded in the sealant member. Weather strip for automobiles.   The sealant member is formed of EPDM rubber or olefinic thermoplastic elastomer, and is bonded to the bottom wall with an adhesive film made of olefinic thermoplastic resin by thermal welding, and the tip of the flange is embedded in the sealant member. The automobile weather strip according to claim 1.   When the flange is inserted into the mounting base, the sealant holding lip slides on the sliding surface of the sealant holding lip, gets over the sealant holding lip, and is embedded in the sealant member. The double-sided adhesive tape is formed so as to be in close contact with the side surface of the flange while the sealant member embeds the front end of the flange when the vehicle outer side wall is pushed from the outside direction. The weather strip for automobiles according to 2.   The sealant holding protrusion is formed in the vicinity of the bottom wall of the inner surface of the vehicle outer side wall, and the sealant member is held by the sealant holding protrusion, the sealant holding lip and the bottom wall. Weather strip for automobiles.   The automobile weather strip according to any one of claims 1 to 4, wherein the vehicle body opening / closing member is a door, and the weather strip is an opening trim weather strip.   The automobile weather strip according to any one of claims 1 to 5, wherein a core material is embedded in the mounting base portion, and the core material is formed to be separable or extendable in the mounting base portion. .   The automobile weather strip according to any one of claims 1 to 6, wherein the attachment base portion is formed of a solid material or a fine foam material, and the seal portion is formed of a sponge material in a hollow shape.   The seal portion of the weather strip is formed of a sponge material of EPDM rubber or olefin-based thermoplastic elastomer, and the attachment base portion is formed of a solid material or fine foam material of EPDM rubber or olefin-based thermoplastic elastomer. The weather strip for automobiles according to any one of claims 1 to 7.

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