JP2008230258A - Weatherstrip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy-to-manufacture weatherstrip for an automobile capable of satisfying demand for vehicle weight reduction and superior in holding force to a flange. <P>SOLUTION: This weatherstrip 10 comprises a trim part 20, and a seal part 30. The trim part 20 forms an approximate U-shaped section comprising a vehicle outer side wall 21, a bottom wall and a vehicle inner side wall 22, and a first vehicle outer flange holding lip 24, a second vehicle outer flange holding lip 25, a first vehicle inner flange holding lip 26, and a second vehicle inner flange holding lip 27 are diagonally formed on inner faces of the vehicle outer side wall 21 and the vehicle inner side wall 22 in a bottom wall direction from a deep part. In this weather strip for an automobile, a tip of the first vehicle inner flange holding lip 26 and a tip of the second inner flange holding lip 27 extend on a deeper side of the trim part 20 than a tip of the first vehicle outer flange holding lip 24 and a tip of the second vehicle outer flange holding lip 25. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a weather strip for an automobile that is mounted on a flange at the periphery of a vehicle body opening of an automobile.

An automobile has openings such as a door opening and a trunk room opening, and weather strips are attached to the periphery of each vehicle body opening to seal between the periphery of the vehicle body opening and an opening opening / closing member such as a door or a trunk lid. ing.
When these weather strips are mounted on the periphery of the vehicle body opening, the flanges on the periphery of the vehicle body opening are inserted into the trim of the weather strip.

For example, as shown in FIG. 3, the seal of the opening of the rear trunk of the automobile is attached to the flange 7 provided at the tip of the vehicle body opening peripheral edge 6 of the automobile body corresponding to the periphery of the lid of the rear trunk. A strip 110 is mounted.
The weather strip 110 is formed of a trim portion 120 attached to the flange 7 and a hollow hollow seal portion 130 that abuts against the back surface of the trunk lid 2 and seals the space therebetween.

  The trim portion 120 includes a vehicle outer side wall 121, a vehicle inner side wall 122, and a bottom wall 123. The trim portion 120 has a substantially U-shaped cross section, and the inner surfaces of the vehicle outer side wall 121 and the vehicle inner side wall 122 are inside the substantially U-shaped cross section. The vehicle outer flange holding lips 124 and 125 and the vehicle inner flange holding lips 126 and 127 are extended in the shape of a cross-section toward the inside of the trim portion 120 (the bottom wall 123 side). Note that a metal insert 129 made of sheet metal is embedded in the trim portion 120.

  In order to attach the weather strip 110 to the flange 7, the front end of the flange 7 provided at the periphery 6 of the vehicle body opening of the rear trunk is inserted into the trim portion 120. As described above, the trim part 120 is provided with the vehicle outer side flange holding lips 124 and 125 and the vehicle inner side flange holding lips 126 and 127. 7 is held and sealed to maintain the posture of the weather strip 110 and prevent the flange 7 from coming off. At this time, the hollow seal portion 130 is in contact with the outer peripheral end portion of the back surface of the trunk lid 2 to seal between the vehicle body opening peripheral edge 6 and the trunk lid 2 (see, for example, Patent Document 1).

Further, the seal between the vehicle body opening peripheral edge 6 and the weather strip 110 is made by bringing the vehicle outer side seal lip 128 provided on the outer surface of the vehicle outer side wall 121 of the trim portion 120 into contact with the surface of the vehicle body opening peripheral edge 6. It is sealed.
However, at the periphery 6 of the vehicle body opening, there is a portion that forms a curved surface along the shape of the vehicle body 1 and the flange 7 also has a curved shape.

In such a portion where the flange 7 is formed in a curved shape, when the trim portion 120 is attached, the hollow seal portion 130 is crushed or falls down, and the hollow seal portion 130 is correctly applied to the back surface of the trunk lid 2. In some cases, the seal between the vehicle body opening peripheral edge 6 and the trunk lid 2 becomes insufficient.
Further, if the holding force of the trim portion 120 is weak, the flange 7 may come out of the trim portion 120.

  For this reason, in order to prevent the weather strip 110 from falling out of the flange 7 or from falling down, as shown in FIG. A metal insert 129 is embedded in the portion 120, and the flange holding lips 124, 125, 126, 127 are brought into close contact with each other.

When manufacturing such a weather strip 110, first, an opening having a substantially U-shaped cross section of the trim portion 120 is opened in a C shape, and the flange holding lips 124, 125, 126, and 127 are not in contact with each other. Then, after vulcanization, the opening was closed to form a substantially U-shaped cross section.
However, if the metal insert 129 is used, the weight increases, which is not preferable for the demand for lighter vehicles. Therefore, the metal insert 129 has been required to be abolished.

Therefore, as shown in FIG. 5, a high-hardness rubber or a synthetic resin is used for the trim portion 220 composed of the vehicle outer side wall 221, the vehicle inner side wall 222 and the bottom wall 223, and sponge rubber is used for the hollow seal portion 230. There is also a weather strip 210 to be used (see, for example, Patent Document 2).
However, since the weather strip 210 is formed by extruding the trim portion 220 into a substantially U-shaped cross section simultaneously with the holding lip 226, the holding lip 226 using the same high-hardness rubber as the trim portion 220 is too rigid to bend easily. In order to prevent the holding lips 224 and 225 from coming into contact with each other, the holding lips 224 and 225 are too short and the holding force is insufficient.
JP-A-10-203167 Japanese Patent No. 3756627

  SUMMARY OF THE INVENTION An object of the present invention is to provide a weather strip that satisfies the demand for weight reduction of a vehicle, has excellent holding force to a flange, and is easy to manufacture.

In order to solve the above-mentioned problem, the present invention of claim 1 is a weather strip for an automobile which is attached to a flange at the periphery of a vehicle body opening and seals between the periphery of the vehicle body opening and a mating member.
The weather strip is attached to the flange to hold the weather strip, and has a substantially U-shaped cross section. The weather strip is integrally formed with the trim portion and comes into contact with the mating member so as to contact the periphery of the vehicle body opening and the mating member. A seal portion for sealing between
The trim portion has a substantially U-shaped cross section including a vehicle outer side wall, a bottom wall, and a vehicle inner side wall, and a first vehicle outer flange holding lip and a second vehicle outer flange holding at least a flange on the inner surface of the vehicle outer side wall. A holding lip is formed obliquely in the direction of the bottom wall in order from the back of the substantially U-shaped cross section, and a first vehicle inner flange holding lip and a second vehicle inner flange holding lip that hold at least the flange are formed on the inner surface of the vehicle inner side wall. Formed obliquely in the direction of the bottom wall in order from the back of the substantially U-shaped cross section,
The front end of the first vehicle inner flange holding lip and the front end of the second vehicle inner flange holding lip are shifted so that the front end of the first vehicle outer flange holding lip and the front end of the second vehicle inner flange holding lip are not in contact with each other. This is a weather strip for automobiles.

  In the first aspect of the present invention, the weather strip is integrally formed on the outer surface of the trim portion and the trim portion having a substantially U-shaped cross section that is attached to the flange and holds the weather strip. A seal portion is provided that contacts a counterpart member that opens and closes and seals between the periphery of the vehicle body opening and the counterpart member. For this reason, a weather strip can be hold | maintained and fixed by attaching a trim part to the flange of a vehicle body opening part periphery. Then, the posture can be maintained so that the weather strip does not fall down by the attached trim portion, and the seal portion can surely abut against the mating member to seal between the periphery of the vehicle body opening and the mating member.

  The trim portion has a substantially U-shaped cross section including a vehicle outer side wall, a bottom wall, and a vehicle inner side wall, and a first vehicle outer flange holding lip and a second vehicle outer flange holding at least a flange on the inner surface of the vehicle outer side wall. The holding lip is formed obliquely in the direction of the bottom wall in order from the back of the substantially U-shaped cross section, and the first car inner flange holding lip and the second car inner flange holding lip are held in cross section on the inner surface of the vehicle inner side wall. It is formed obliquely in the direction of the bottom wall in order from the back of the substantially U-shape. For this reason, at least the first vehicle outer flange holding lip, the second vehicle outer flange holding lip, the first vehicle inner flange holding lip and the second vehicle inner flange holding lip are held, and the flanges are held at two or more locations from both sides. Can be held stably and reliably.

  The front end of the first vehicle inner flange holding lip and the front end of the second vehicle inner flange holding lip are shifted so that the front end of the first vehicle outer flange holding lip and the front end of the second vehicle inner flange holding lip are not in contact with each other. Established. For this reason, even if the trim portion is extruded to have a substantially U-shaped cross section, the flange holding lips can be formed without contacting each other, and it is not necessary to form the trim portion by opening the substantially U-shaped cross section. .

  The front end of the first outer flange holding lip extends between the front end of the first inner flange holding lip and the second end of the second inner flange holding lip. 2 It extends from the front end of the vehicle inner flange holding lip toward the opening side having a substantially U-shaped cross section. Therefore, in the same manner as described above, the first vehicle outer flange holding lip and the second vehicle outer flange holding lip are alternately arranged at the front ends of the first vehicle inner flange holding lip and the second vehicle inner flange holding lip. Therefore, the trim portion can be formed with the substantially U-shaped cross section, and the trim portion can be held so as not to fall with respect to the flange.

  According to the second aspect of the present invention, the front end of the first vehicle outer side flange holding lip extends longer in the vehicle inner side wall direction than the front end of the first vehicle inner side flange holding lip, and the front end of the second vehicle outer side flange holding lip is The front end of the second vehicle inner side flange holding lip extends longer in the vehicle inner side wall direction, and the front end of the first vehicle inner side flange holding lip is longer in the vehicle outer side wall direction than the front end of the first vehicle outer side flange holding lip. The end of the second vehicle inner flange holding lip is an automobile weather strip that extends longer in the vehicle outer side wall direction than the front end of the second vehicle outer flange holding lip.

  In the present invention of claim 2, the tip end of the first vehicle outer side flange holding lip extends longer in the vehicle inner side wall direction than the tip end of the first vehicle inner side flange holding lip, and the tip end of the second vehicle outer side flange holding lip is The front end of the second vehicle inner side flange holding lip extends longer in the vehicle inner side wall direction, and the front end of the first vehicle inner side flange holding lip is longer in the vehicle outer side wall direction than the front end of the first vehicle outer side flange holding lip. The front end of the second vehicle inner side flange holding lip was extended longer in the vehicle outer side wall direction than the front end of the second vehicle outer side flange holding lip. Therefore, the tip of the first vehicle outer flange holding lip and the tip of the second vehicle outer flange holding lip are mutually between the tip of the first vehicle inner flange holding lip and the tip of the second vehicle inner flange holding lip. Since it is complicated and overlapped, when the flange is inserted into the trim part, the amount of bending of the flange holding lip can be increased, the holding force of the flange can be increased, and the insert is attached to the trim part. Even if it is not buried, it can be securely held.

  According to the third aspect of the present invention, the front ends of the first vehicle outer flange holding lip, the second vehicle outer flange holding lip, the first vehicle inner flange holding lip, and the second vehicle inner flange holding lip are bent toward the bottom wall. It is the weather strip for motor vehicles formed in this way.

  In the third aspect of the present invention, the front end portions of the first vehicle outer flange holding lip, the second vehicle outer flange holding lip, the first vehicle inner flange holding lip, and the second vehicle inner flange holding lip are directed in the direction of the bottom wall. Since it is formed by bending, each tip of the holding lip can abut the surface of the flange planarly when the flange is inserted, so that the flange can be held stably and resistance to flange pull-out The power can be increased.

In the present invention of claim 4, on the outer surface of the front end of the vehicle outer side wall, a vehicle outer seal lip extends obliquely outward in an opening direction having a substantially U-shaped cross section,
The front end of the first vehicle inner side flange holding lip extends to the bottom wall side than the front end of the first vehicle outer side flange holding lip, and the second vehicle inner side flange holding lip is connected to the front end of the first vehicle outer side flange holding lip and the front end of the first vehicle outer side flange holding lip. 2 It extends between the tip of the outer flange holding lip of the car,
The front end of the first vehicle outer side flange holding lip extends between the front end of the first vehicle inner side flange holding lip and the front end of the second vehicle inner side flange holding lip. 2 is a weather strip for automobiles extending from the front end of the vehicle inner flange holding lip toward the opening side having a substantially U-shaped cross section.

  In the present invention of claim 4, since the vehicle outer side seal lip extends obliquely outward in the opening direction having a substantially U-shaped cross section on the front end outer surface of the vehicle outer side wall, the vehicle outer side seal lip of the outer panel constituting the flange Abutting on the root portion can seal between the weather strip and the outer panel, and rain water or the like can be prevented from entering from the outside of the vehicle.

  The front end of the first vehicle inner side flange holding lip extends to the bottom wall side of the front end of the first vehicle outer side flange holding lip, and the second vehicle inner side flange holding lip is connected to the front end of the first vehicle outer side flange holding lip and the front end of the first vehicle outer side flange holding lip. It extends between the front end of the two-wheel outer flange holding lip. For this reason, the first vehicle inner flange holding lip and the second vehicle inner flange holding lip are alternately arranged at the front ends of the first vehicle outer flange holding lip and the second vehicle outer flange holding lip, respectively. Can be molded with the trim portion remaining substantially U-shaped in cross section. Furthermore, since it arrange | positions alternately, a flange can be hold | maintained stably. In addition, when the vehicle outer side seal lip is formed on the outer surface of the vehicle outer side wall, the vehicle inner flange holding lip is located on the bottom wall side of the vehicle outer flange holding lip. The part can be prevented from falling to the inside of the vehicle.

  According to a fifth aspect of the present invention, there is provided a weather strip for an automobile in which a vehicle inner side seal lip extends obliquely outward in the direction of the opening having a substantially U-shaped cross section on the front end outer surface of the vehicle inner side wall.

  In the present invention of claim 5, since the vehicle inner side seal lip extends obliquely in the direction of the opening having a substantially U-shaped cross section on the front end outer surface of the vehicle inner side wall, the vehicle inner side seal lip of the inner panel constituting the flange Abutting on the root portion, the space between the weather strip and the inner panel can be sealed, and rainwater and the like can be prevented from entering from the outside of the vehicle.

  6. The automobile weather strip according to any one of claims 1 to 5, wherein the hollow seal portion is made of sponge rubber and the trim portion is made of solid rubber.

  In the present invention of claim 6, since the hollow seal portion is formed of sponge rubber, it can be flexibly brought into contact with the unevenness and the situation of the opening / closing member and sealed. Since the trim portion is formed of solid rubber, the force for holding the flange is strong, and the trim portion can be firmly and securely attached to the flange.

  According to a seventh aspect of the present invention, the weather strip is an automotive weather strip formed of EPDM rubber or an olefinic thermoplastic elastomer.

  In the present invention of claim 7, the weather strip is formed of EPDM rubber or olefinic thermoplastic elastomer. Therefore, regardless of whether the sponge material or the solid material is formed of either EPDM rubber or olefinic thermoplastic elastomer, the same type of material can be used for simultaneous extrusion molding, 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.

  According to the present invention of claim 8, the weather strip is an automotive weather strip which is a trunk weather strip or a back door weather strip.

  In the present invention of claim 8, since the vehicle body opening / closing member is a door, and the weather strip is a trunk weather strip or a back door weather strip, and between the trunk and the trunk lid, and the periphery of the vehicle body opening. Rain water and dust entering from between the back door can be reliably sealed, and noise entering the vehicle can be reliably prevented.

The first vehicle inner flange holding lip and the second vehicle inner flange holding lip are alternately arranged at the tips of the first vehicle outer flange holding lip and the second vehicle outer flange holding lip, respectively. The trim part can be molded without being in contact with the substantially U-shaped cross section.
The trim part can be prevented from falling to the inside of the vehicle due to the reaction force of the outside seal lip. The first vehicle outer flange holding lip and the second vehicle outer flange holding lip are arranged alternately with the respective leading ends of the first vehicle inner flange holding lip and the second vehicle inner flange holding lip. It can be molded in the shape of a letter and the flange can be held securely.

  The front end of the first vehicle outer flange holding lip and the front end of the second vehicle outer flange holding lip are intertwined between the front end of the first vehicle inner flange holding lip and the front end of the second vehicle inner flange holding lip, When formed in an overlapping manner, the holding force of the flange can be increased, and the insert can be securely held without embedding the insert in the trim portion.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows an embodiment of the present invention and is a sectional view of a weather strip 10. FIG. 2 shows a state in which the trunk lid 2 of the weather strip 10 attached to the rear trunk is closed.
The embodiment of the present invention will be described by taking a weather strip 10 attached to a rear trunk as an example. However, the present invention is widely used for an automobile opening such as a back door weather strip, an automobile door opening, and a roof opening. Can be used for weather strips to seal.

As shown in FIG. 1, the weather strip 10 according to the embodiment of the present invention is formed of a trim portion 20 attached to the flange 7 and a hollow seal portion 30 that abuts and seals against the trunk lid 2.
A hollow seal portion 30 described later is formed on the outer surface of the bottom wall 23 of the trim portion 20 so as to face upward.

First, the trim part 20 will be described.
The trim portion 20 has a substantially U-shaped cross section including a vehicle outer side wall 21, a vehicle inner side wall 22, and a bottom wall 23. The vehicle outer side wall 21, the vehicle inner side wall 22, and the bottom wall 23 can be formed of solid rubber or hard rubber.

  On the inner surface of the vehicle outer side wall 21, a first vehicle outer flange holding lip 24 and a second vehicle outer flange holding lip 25 are directed inward from the back of the substantially U-shaped cross section, that is, in order from the bottom wall 23 side. In the same manner, a first vehicle inner side flange holding lip 26 and a second vehicle inner side flange holding lip 27 are similarly formed on the inner surface of the vehicle inner side wall 22 toward the inside of a substantially U-shaped cross section. Are integrally formed in an oblique direction. These holding lips are formed at the same time when the vehicle outer side wall 21, the vehicle inner side wall 22 and the bottom wall 23 are extruded.

  For this reason, the first vehicle outer flange holding lip 24, the second vehicle outer flange holding lip 25, the first vehicle inner flange holding lip 26, and the second vehicle inner flange holding lip 27 are used to connect the flange 7 from both sides. Two locations can be held by the flange holding lip, which can be held stably and reliably.

  In the present embodiment, two flange holding lips are formed on each of the vehicle outer side wall 21 and the vehicle inner side wall 22, but three or more flange holding lips can be formed respectively. In the case of three or more, the number of flange holding lips formed on the vehicle outer side wall 21 and the vehicle inner side wall 22 can be made different.

  The front end of the first vehicle inner side flange holding lip 26 extends to the bottom wall 23 side than the front end of the first vehicle outer side flange holding lip 24, and the second vehicle inner side flange holding lip 27 is formed of the first vehicle outer side flange holding lip 27. 24 extends between the front end of 24 and the front end of the second vehicle outer side flange holding lip 25.

  The front end of the first vehicle outer side flange holding lip 24 is extended between the front end of the first vehicle inner side flange holding lip 26 and the front end of the second vehicle inner side flange holding lip 27, and the second vehicle outer side flange holding lip 27 is extended. The front end of 25 extends from the front end of the second vehicle inner flange holding lip 27 toward the opening side having a substantially U-shaped cross section.

That is, the first vehicle inner flange holding lip 26 and the second vehicle inner flange holding lip 27 are closer to the bottom wall 23 than the respective leading ends of the first vehicle outer flange holding lip 24 and the second vehicle outer flange holding lip 25, respectively. In FIG. 1, they are shifted upward and are alternately arranged.
For this reason, even if the trim part 20 is formed with a substantially U-shaped cross section, the tips of the flange holding lips 24, 25, 26, 27 do not contact each other.

  In the present embodiment, the front ends of the flange holding lips are staggered, but the front ends of the first vehicle outer side flange holding lip 24 and the front end of the second vehicle outer side are not provided, for example, without staggering the front ends of the flange holding lips. The front end of the flange holding lip 25 can also be arranged so as to be sandwiched vertically between the front end of the first vehicle inner side flange holding lip 26 and the front end of the second vehicle inner side flange holding lip 27.

  Further, when the vehicle outer side seal lip 28 is formed on the outer surface of the vehicle outer side wall 12, if the flange holding lip is formed as shown in FIG. When a force that falls is applied, the first vehicle inner flange holding lip 26 and the second vehicle inner flange holding lip 27 are positioned so as to be displaced toward the bottom wall 23, so that the force for holding the trim portion 20 is strong and falls. Can be prevented.

  The leading ends of the first vehicle outer flange holding lip 24, the second vehicle outer flange holding lip 25, the first vehicle inner flange holding lip 26 and the second vehicle inner flange holding lip 27 are bent portions 24b, 25b, 26b and 27b. In FIG. 1, the bottom wall 23 is bent upward, that is, in FIG. And each front-end | tip part 24c, 25c, 26c, 27c faces the bottom wall 23 direction, and the surface contact | abutted with the flange 7 is formed in planar shape.

  When the flange 7 is inserted into the trim portion 20, the bent portions 24b, 25b, 26b, 27b of the flange holding lips 24, 25, 26, 27 are bent, and the tip portions 24c, 25c, 26c, 27c are The surface of the flange 7 can be abutted in a plane and the flange 7 can be stably held. Further, when the flange 7 is about to come out of the trim portion 20, the tip portions 24c, 25c, 26c, and 27c are brought into close contact with the side surface of the flange 7, and the resistance force against the removal can be increased.

  The first vehicle outer flange holding lip 24, the second vehicle outer flange holding lip 25, the first vehicle inner flange holding lip 26, and the second vehicle inner flange holding lip 27 have recesses 24d, 25d, 26d, and 27d at the root portions, respectively. Is formed. For this reason, even if the trim part 20 is formed of solid rubber or hard rubber, when the flange 7 is inserted into the trim part 20, the flange holding lips 24, 25, 26, 27 are easily bent in the direction of the bottom wall 23. And the holding force of the flange 7 can be secured.

  On the outer surface of the front end of the vehicle outer side wall 21, a vehicle outer seal lip 28 extends obliquely in the opening direction having a substantially U-shaped cross section. The vehicle outer side seal lip 28 abuts against a root portion where the outer panel 1b forming the flange 7 is bent from the flange 7, and can seal between the weather strip 10 and the outer panel 1b. It is possible to prevent rainwater and the like from entering the vehicle from the outside.

  A protrusion 28 b can be formed at the root of the vehicle exterior seal lip 28. In this case, the vehicle outer side seal lip 28 and the protrusion 28b can perform double sealing. The vehicle exterior seal lip 28 and the protrusion 28b are formed of a sponge material. For this reason, it can bend flexibly according to the curved surface of the outer panel 1 b, can ensure sealing performance, and it is easy to insert the flange 7 into the trim portion 20.

  A vehicle inner side seal lip 29 extends obliquely in the direction of the opening having a substantially U-shaped cross section on the outer end surface of the vehicle inner side wall 22. The vehicle inner side seal lip 29 can abut a base portion where the inner panel 1c forming the flange 7 is bent from the flange 7 to seal between the weather strip 10 and the inner panel 1c.

A hollow seal portion 30 is formed on the outer surface of the bottom wall 23 of the trim portion 20. The hollow seal portion 30 can be formed in a substantially circular, elliptical, rhombus, etc. cross section. The hollow seal portion 30 is connected to the trim portion 20 by a hollow seal portion neck portion 31.
The hollow seal portion 30 is formed of a sponge material. For this reason, when it contact | abuts to opening part opening-and-closing members, such as the trunk lid 2, it can bend flexibly and can ensure sealing performance. Since the hollow seal portion neck portion 31 is formed of a solid material like the trim portion 20, the hollow seal portion 30 can be held in a predetermined position.
The hollow seal portion 30 can also be formed on the outer surface of the vehicle outer side wall 21 or the vehicle inner side wall 22 of the trim portion 20 according to the position of the opening opening / closing member. Further, instead of the hollow seal portion 30, it may be formed in a lip shape instead of a hollow shape.

  When the trim portion 20 is attached to the flange 7, as described above, the first vehicle outer flange holding lip 24, the second vehicle outer flange holding lip 25, the first vehicle inner flange holding lip 26, and the second vehicle inner side. The weather strip 10 is held by the flange holding lip 27 so that its posture is stably held. Then, the hollow seal portion 30 integrally formed on the upper portion of the outer surface of the trim portion 20 is surely brought into contact with the back surface of the trunk lid 2 and seals between the trunk lid 2 and the vehicle body opening peripheral edge 6. Can do.

  In the formation of the weather strip 10 of the present invention, synthetic rubber, thermoplastic elastomer, and soft synthetic resin are used. For example, EPDM rubber is used for synthetic rubber, polyolefin elastomer is used for thermoplastic elastomer, and soft chloride is used for soft synthetic resin. Vinyl or the like can be used. When EPDM rubber and olefinic thermoplastic elastomer are used, co-extrusion molding can be performed using the same type of material, 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.

The straight portion of the weather strip 10 is formed by an extruder and then cut into a predetermined length to be manufactured. The part attached to the corner part may be formed by molding, and in this case, the linear parts are simultaneously connected by molding.
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. In the case of a thermoplastic elastomer or a soft synthetic resin, it is cooled and solidified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. It is a schematic perspective view seen from diagonally above the automobile It is sectional drawing of the conventional weather strip. It is sectional drawing of the other conventional weather strip. It is sectional drawing of the other conventional weather strip.

Explanation of symbols

7 Flange 10 Weather strip 20 Trim portion 21 Car outer side wall 22 Car inner side wall 23 Bottom wall 24 First car outer flange holding lip 25 Second car outer flange holding lip 26 First car inner flange holding lip 27 Second car inner flange Holding lip 30 Hollow seal

Claims (8)

In an automobile weather strip that is attached to a flange at the periphery of the vehicle body opening and seals between the periphery of the vehicle body opening and the mating member,
The weather strip is attached to the flange to hold the weather strip, and has a substantially U-shaped cross section. The trim is formed integrally with the trim and abuts against a mating member. A seal portion for sealing between the mating member and
The trim portion has a substantially U-shaped cross section including a vehicle outer side wall, a bottom wall, and a vehicle inner side wall. A first vehicle outer flange holding lip and a second lip holding at least the flange are formed on the inner surface of the vehicle outer side wall. A vehicle outer flange holding lip is formed obliquely in the direction of the bottom wall in order from the back of the substantially U-shaped cross section, and a first vehicle inner flange holding lip and a second vehicle holding at least the flange on the inner surface of the vehicle inner side wall. The inner flange holding lip is formed obliquely in the direction of the bottom wall in order from the back of the substantially U-shaped cross section,
The tip of the first vehicle inner flange holding lip and the tip of the second vehicle inner flange holding lip are not in contact with the tip of the first vehicle outer flange holding lip and the tip of the second vehicle inner flange holding lip, respectively. A weather strip for automobiles, characterized in that the weather strip is extended.   The front end of the first vehicle outer side flange holding lip extends longer in the vehicle inner side wall direction than the front end of the first vehicle inner side flange holding lip, and the front end of the second vehicle outer side flange holding lip is extended to the second side. The front end of the vehicle interior flange holding lip extends longer in the direction of the vehicle interior side wall, and the front end of the first vehicle interior flange retention lip extends in the direction of the vehicle exterior side wall than the front end of the first vehicle outer side flange retention lip. 2. The automobile weather according to claim 1, wherein the automobile weather flange is extended longer, and a tip end of the second vehicle inner flange holding lip extends longer in a direction of the vehicle outer side wall than a tip end of the second vehicle outer flange holding lip. strip.   The front ends of the first vehicle outer flange holding lip, the second vehicle outer flange holding lip, the first vehicle inner flange holding lip, and the second vehicle inner flange holding lip are bent toward the bottom wall. The automobile weather strip according to claim 1 or 2. On the front outer surface of the vehicle outer side wall, a vehicle outer seal lip extends obliquely outward in the direction of the opening having the substantially U-shaped cross section.
The front end of the first vehicle inner side flange holding lip extends toward the bottom wall side than the front end of the first vehicle outer side flange holding lip, and the second vehicle inner side flange holding lip is held by the first vehicle outer side flange holding lip. Extending between the tip of the lip and the tip of the second vehicle outer flange holding lip,
The front end of the first vehicle outer side flange holding lip extends between the front end of the first vehicle inner side flange holding lip and the front end of the second vehicle inner side flange holding lip. The automobile weather strip according to any one of claims 1 to 3, wherein a leading end extends to an opening side having a substantially U-shaped cross section from a leading end of the second vehicle inner flange holding lip.   5. The automobile wafer according to claim 1, wherein a vehicle inner seal lip extends obliquely outward in the direction of the opening having the substantially U-shaped cross section on the front end outer surface of the vehicle inner side wall. The strip.   The automobile weather strip according to any one of claims 1 to 5, wherein the hollow seal portion is formed of sponge rubber, and the trim portion is formed of solid rubber.   The automobile weather strip according to any one of claims 1 to 6, wherein the weather strip is formed of an EPDM rubber or an olefin-based thermoplastic elastomer.   The automobile weather strip according to any one of claims 1 to 7, wherein the weather strip is a trunk weather strip or a back door weather strip.

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